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Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

ARM - 2009 Performance Metrics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9 Performance Metrics 9 Performance Metrics Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings User Meetings Annual Meetings of the Atmospheric System Research (ASR) Science Team and Fall Working Groups Accomplishments Read about the 20 years of accomplishments (PDF, 696KB) from the ARM Program and user facility. Performance Metrics ASR Metrics 2009 2008 2007 2006 2009 Performance Metrics Improve Climate Models - Develop a coupled climate model with fully interactive carbon and sulfur cycles, as well as dynamic vegetation to enable simulations of aerosol effects, carbon chemistry, and carbon sequestration by the land surface and oceans and the interactions between the carbon cycle and climate. In fiscal year 2009: Provide improved climate

2

ARM - 2008 Performance Metrics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

8 Performance Metrics 8 Performance Metrics Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings User Meetings Annual Meetings of the Atmospheric System Research (ASR) Science Team and Fall Working Groups Accomplishments Read about the 20 years of accomplishments (PDF, 696KB) from the ARM Program and user facility. Performance Metrics ASR Metrics 2009 2008 2007 2006 2008 Performance Metrics Each year, the ARM Program must submit to DOE an overall performance measure related to scientific achievement. The overall performance measure includes specific metrics for reporting progress each quarter. This reporting process includes support documentation (usually a report or data file) appropriate for the metric. Overall Performance Measures

3

ARM - 2007 Performance Metrics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7 Performance Metrics 7 Performance Metrics Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) ARM Science Team Meetings User Meetings Annual Meetings of the Atmospheric System Research (ASR) Science Team and Fall Working Groups Accomplishments Read about the 20 years of accomplishments (PDF, 696KB) from the ARM Program and user facility. Performance Metrics ASR Metrics 2009 2008 2007 2006 2007 Performance Metrics A Single Column Model (SCM) represents the evolution of the atmosphere in a single grid box of a Global Climate Model (GCM). This illustration represents the observing strategy of ARM, which takes continuous atmospheric observations from fixed sites in three climate regimes around the world. A Single Column Model (SCM) represents the evolution of the atmosphere in a

4

Buildings Performance Metrics Terminology  

Broader source: Energy.gov (indexed) [DOE]

Energy's Commercial Building Initiative Page 1 Energy's Commercial Building Initiative Page 1 January 2009 Buildings Performance Metrics Terminology To clarify how the terms are used in the Department of Energy's Performance Metrics Research Project, a list of terms related to performance metrics are defined and include examples and comments. Visit www.commercialbuildings.energy.gov/performance_metrics.html to learn more. Baseline - a standard reference case used as a basis for comparison Examples: a simulation model of an ASHRAE 90.1 compliant building, control building, measurement of energy consumption prior to application of an energy conservation measure Comments: Establishing a clearly defined baseline very important and is often the most difficult task. Defining a repeatable baseline is essential if the work is to be compared to results of other

5

Performance Metrics Tiers | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Performance Metrics Tiers Performance Metrics Tiers Performance Metrics Tiers The performance metrics defined by the Commercial Buildings Integration Program offer different tiers of information to address the needs of various users. On this page you will find information about the various goals users are trying to achieve by using performance metrics and the tiers of metrics. Goals in Measuring Performance Many individuals and groups are involved with a building over its lifetime, and all have different interests in and requirements for the building. Although these interests differ, the value in using metrics reflects a small number of driving factors: Controlling energy costs and energy consumption Minimizing environmental impacts Enhancing the image through marketing Improving load forecasting, energy management, and reliability.

6

Instructions for EM Corporate Performance Metrics | Department...  

Broader source: Energy.gov (indexed) [DOE]

for EM Corporate Performance Metrics Instructions for EM Corporate Performance Metrics Quality Program Criteria Instructions for EM Corporate Performance Metrics More Documents &...

7

Building Technologies Office: Performance Metrics Tiers  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Performance Metrics Performance Metrics Tiers to someone by E-mail Share Building Technologies Office: Performance Metrics Tiers on Facebook Tweet about Building Technologies Office: Performance Metrics Tiers on Twitter Bookmark Building Technologies Office: Performance Metrics Tiers on Google Bookmark Building Technologies Office: Performance Metrics Tiers on Delicious Rank Building Technologies Office: Performance Metrics Tiers on Digg Find More places to share Building Technologies Office: Performance Metrics Tiers on AddThis.com... About Take Action to Save Energy Activities 179d Tax Calculator Advanced Energy Design Guides Advanced Energy Retrofit Guides Building Energy Data Exchange Specification Buildings Performance Database Data Centers Energy Asset Score Energy Modeling Software

8

EM Corporate QA Performance Metrics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Corporate QA Performance Metrics EM Corporate QA Performance Metrics Quality Program Criteria Summary EM Corporate QA Performance Metrics More Documents & Publications QA Corporate...

9

ATTACHMENT A PROJECT PERFORMANCE METRICS (DRAFT)  

E-Print Network [OSTI]

metrics submission. The focus areas are: weather, climate change and variability, atmospheric compositionATTACHMENT A PROJECT PERFORMANCE METRICS (DRAFT) REASoN projects are required to collect and report on the metrics noted in Table A. These data will be reported from the projects on a monthly basis with six month

Christian, Eric

10

Performance Metrics Research Project - Final Report  

SciTech Connect (OSTI)

NREL began work for DOE on this project to standardize the measurement and characterization of building energy performance. NREL's primary research objectives were to determine which performance metrics have greatest value for determining energy performance and to develop standard definitions and methods of measuring and reporting that performance.

Deru, M.; Torcellini, P.

2005-10-01T23:59:59.000Z

11

Evaluation Criteria for Human-Automation Performance Metrics  

E-Print Network [OSTI]

Previous research has identified broad metric classes for human-automation performance to facilitate metric selection, as well as understanding and comparison of research results. However, there is still lack of an objective ...

Pina, Patricia Elena

12

Improved Product Energy Intensity Benchmarking Metrics for Thermally Concentrated Food Products  

Science Journals Connector (OSTI)

Improved Product Energy Intensity Benchmarking Metrics for Thermally Concentrated Food Products ... Sogut, Z.; Ilten, N.; Oktay, Z.Energetic and exergetic performance evaluation of the quadruple-effect evaporator unit in tomato paste evaporation Energy 2010, 35, 3821– 3826 ...

Michael E. Walker; Craig S. Arnold; David J. Lettieri; Margot J. Hutchins; Eric Masanet

2014-09-12T23:59:59.000Z

13

EM Corporate Performance Metrics, Complex Level  

Broader source: Energy.gov (indexed) [DOE]

Complex Level Complex Level July, 2013 Performance Measure Unit Lifecycle Total Estimate Pre-2013 Lifecycle Values 2013 Target 2014 Target Pu packaged for long-term disposition Number of Containers 5,089 5,089 5,089 5,089 eU packaged for disposition Number of Containers 8,198 8,016 8,016 8,016 Pu/U residues packaged for disposition Kilograms of Bulk 107,828 107,828 107,828 107,828 DU & U packaged for disposition Metric Tons 736,801 32,452 45,317 76,817 Liquid Waste eliminated Thousands of Gallons 91,907 5,340 6,260 6,812 Liquid Waste Tanks closed Number of Tanks 239 11 11 13 HLW packaged for disposition Number of Containers 24,183 3,802 4,077 4,283 SNF packaged for disposition Metric Tons of Heavy Metal 2,450 2,128 2,128 2,128

14

Performance Metrics and Budget Division (HC-51) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Performance Metrics and Budget Division (HC-51) Performance Metrics and Budget Division (HC-51) Performance Metrics and Budget Division (HC-51) MISSION: The mission of the Performance Metrics and Budget Division (HC-51) is to support the effective and efficient implementation of the Department of Energy's human capital initiatives and functions through the strategic integration of corporate human capital performance metrics and the budget of the Office of the Chief Human Capital Officer (HC). FUNCTIONS: Human capital performance measurement and strategic functions at the DOE and interagency levels include: Provides analytical support and strategic advice to internal and external HC stakeholders on the appropriate and effective use of performance metrics as a key to effective strategic human capital management.

15

Office of HC Strategy Budget and Performance Metrics (HC-50)...  

Broader source: Energy.gov (indexed) [DOE]

and partner agencies on strategic human capital management, performance metrics, workforce analysis and succession planning. Leadership Tony Nguyen Director of the Office...

16

Improving enterprise decision-making : the benefits of metric commonality  

E-Print Network [OSTI]

The objective of this research is to identify a new approach in managing, and making internal program-level decisions from, externally tracked performance metrics. Industry observations indicate the increasing challenge ...

Friedman, Alissa H. (Alissa Heather)

2010-01-01T23:59:59.000Z

17

Metrics to Characterize Airport Operational Performance Using Surface Surveillance Data  

E-Print Network [OSTI]

Tower BOS Boston General Edward Lawrence Logan International Airport EDCT Expected Departure Clearance International Airport, and are therefore evaluated and discussed using this airport as an example. These metricsMetrics to Characterize Airport Operational Performance Using Surface Surveillance Data Harshad

Gummadi, Ramakrishna

18

New set of metrics for the computational performance  

E-Print Network [OSTI]

New set of metrics for the computational performance of IS-ENES Earth System Models TR/CMGC/14/73 U performance of Earth System Models is developed and used for an initial performance analysis of the EC models.................................................................................................................................5 2.1 List of Participating Earth System Models

19

EM Corporate Performance Metrics, Site Level  

Broader source: Energy.gov (indexed) [DOE]

Site Level Site Level July, 2013 Site Performance Measure Unit Lifecycle Total Estimate Pre-2013 Lifecycle Values 2013 Target 2014 Target Ames Laboratory Geographic Sites Eliminated Number completed 1 1 1 1 Argonne National Laboratory-East TRU-RH Cubic Meters 22 22 22 22 Argonne National Laboratory-East TRU-CH Cubic Meters 21.4 21.4 21 21 Argonne National Laboratory-East Radioactive Facility Completions Number of Facilities 80 80 80 80 Argonne National Laboratory-East Geographic Sites Eliminated Number completed 1 1 1 1 Argonne National Laboratory-East Remediation Complete Number of Release Sites 443 443 443 443 Brookhaven National Laboratory eU packaged for disposition Number of Containers 0 0 0 0 Brookhaven National Laboratory Nuclear Facility Completions Number of Facilities 2 2 2 2

20

Deep Energy Retrofit Performance Metric Comparison: Eight California Case Studies  

SciTech Connect (OSTI)

In this paper we will present the results of monitored annual energy use data from eight residential Deep Energy Retrofit (DER) case studies using a variety of performance metrics. For each home, the details of the retrofits were analyzed, diagnostic tests to characterize the home were performed and the homes were monitored for total and individual end-use energy consumption for approximately one year. Annual performance in site and source energy, as well as carbon dioxide equivalent (CO{sub 2}e) emissions were determined on a per house, per person and per square foot basis to examine the sensitivity to these different metrics. All eight DERs showed consistent success in achieving substantial site energy and CO{sub 2}e reductions, but some projects achieved very little, if any source energy reduction. This problem emerged in those homes that switched from natural gas to electricity for heating and hot water, resulting in energy consumption dominated by electricity use. This demonstrates the crucial importance of selecting an appropriate metric to be used in guiding retrofit decisions. Also, due to the dynamic nature of DERs, with changes in occupancy, size, layout, and comfort, several performance metrics might be necessary to understand a project’s success.

Walker, Iain; Fisher, Jeremy; Less, Brennan

2014-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Office of HC Strategy Budget and Performance Metrics (HC-50) | Department  

Broader source: Energy.gov (indexed) [DOE]

Strategy Budget and Strategy Budget and Performance Metrics (HC-50) Office of HC Strategy Budget and Performance Metrics (HC-50) Mission Statement and Function Statement The Office of Human Capital Strategy, Budget, and Performance Metrics provides strategic direction and advice to its stakeholders through the integration of budget analysis, workforce projections, and performance metrics in support of the goals and missions of the Department of Energy. Functions: Promotes business partnerships with Departmental elements to define and design HCM implementation strategies in alignment with Departmental mission, goals, and objectives. Provides strategic direction and advice through analysis of budget, workforce projections, and performance to respond to congressional mandates, administration goals, Departmental priorities and mission needs.

22

Improving Deaerator Performance  

E-Print Network [OSTI]

The objectives of deaeration of feedwater are reviewed. A discussion of appropriate test data and methods for assessing deaerator performance are given. Analysis procedures are developed to analyze the test data. Typical problems such as over...

Dyer, D. F.; Maples, G.

23

Ad Hoc Networking Critical Features and Performance Metrics Madhavi W. Subbarao  

E-Print Network [OSTI]

Ad Hoc Networking Critical Features and Performance Metrics Madhavi W. Subbarao Wireless Communications Technology Group, NIST October 7, 1999 A mobile ad hoc network MANET is an autonomous collection networking features and performance metrics for assessing the behav- ior of an ad-hoc network are identi ed

24

Simulation information regarding Sandia National Laboratories%3CU%2B2019%3E trinity capability improvement metric.  

SciTech Connect (OSTI)

Sandia National Laboratories, Los Alamos National Laboratory, and Lawrence Livermore National Laboratory each selected a representative simulation code to be used as a performance benchmark for the Trinity Capability Improvement Metric. Sandia selected SIERRA Low Mach Module: Nalu, which is a uid dynamics code that solves many variable-density, acoustically incompressible problems of interest spanning from laminar to turbulent ow regimes, since it is fairly representative of implicit codes that have been developed under ASC. The simulations for this metric were performed on the Cielo Cray XE6 platform during dedicated application time and the chosen case utilized 131,072 Cielo cores to perform a canonical turbulent open jet simulation within an approximately 9-billion-elementunstructured- hexahedral computational mesh. This report will document some of the results from these simulations as well as provide instructions to perform these simulations for comparison.

Agelastos, Anthony Michael; Lin, Paul T.

2013-10-01T23:59:59.000Z

25

Grid Reliability Performance Metrics Using Phasor Data and Model-less Algorithms,  

Broader source: Energy.gov (indexed) [DOE]

Reliability Performance Metrics Using Reliability Performance Metrics Using Phasor Data and Model-less Algorithms, Prototype Development and Field Test Carlos Martinez - Advanced Systems Researchers (ASR) cmartinez@asresearchers.com June 27-28 2013 Washington, DC DOE/OE Transmission Reliability Program 2 Project Objective LOAD-GENERATION CONTROL RELIABILITY PERFORMANCE REALTIME MONITORING GRID RELIABILITY PERFORMANCE PHASOR BASED AND MODELESS REALTIME MONITORING RESEARCH, PROTOTYPE AND FIELD TEST ALL APPLICATIONS IN PRODUCTION PROJECT OBJECTIVES 3 Project Analytics Approach 4 Accomplishments to be Completed in FY 2013 * Deliver to MISO the Extended Prototype Functional Specification * Complete Research, Test and Validation of Grid Post- Disturbance Reliability Metrics

26

Nanolubricants to Improve Chiller Performance  

Broader source: Energy.gov (indexed) [DOE]

Nanolubricants to Improve Chiller Nanolubricants to Improve Chiller Performance Mark Kedzierski NIST MAK@NIST.GOV 301 975 5282 April 3, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Enabling technology for improving the efficiency of chillers that cool large buildings with nanolubricants. (Nanolubricants are not currently used in chillers.) Develop fundamental understanding of how nanolubricants enhance refrigerant/nanolubricant. What nanoparticle size,

27

Advanced Fuels Campaign Light Water Reactor Accident Tolerant Fuel Performance Metrics Executive Summary  

SciTech Connect (OSTI)

Research and development (R&D) activities on advanced, higher performance Light Water Reactor (LWR) fuels have been ongoing for the last few years. Following the unfortunate March 2011 events at the Fukushima Nuclear Power Plant in Japan, the R&D shifted toward enhancing the accident tolerance of LWRs. Qualitative attributes for fuels with enhanced accident tolerance, such as improved reaction kinetics with steam resulting in slower hydrogen generation rate, provide guidance for the design and development of fuels and cladding with enhanced accident tolerance. A common set of technical metrics should be established to aid in the optimization and down selection of candidate designs on a more quantitative basis. “Metrics” describe a set of technical bases by which multiple concepts can be fairly evaluated against a common baseline and against one another. This report describes a proposed technical evaluation methodology that can be applied to evaluate the ability of each concept to meet performance and safety goals relative to the current UO2 – zirconium alloy system and relative to one another. The resultant ranked evaluation can then inform concept down-selection, such that the most promising accident tolerant fuel design option(s) can continue to be developed toward qualification.

Shannon Bragg-Sitton

2014-02-01T23:59:59.000Z

28

Performance metrics for Inertial Confinement Fusion implosions: aspects of the technical framework for measuring progress in the National Ignition Campaign  

SciTech Connect (OSTI)

The National Ignition Campaign (NIC) uses non-igniting 'THD' capsules to study and optimize the hydrodynamic assembly of the fuel without burn. These capsules are designed to simultaneously reduce DT neutron yield and to maintain hydrodynamic similarity with the DT ignition capsule. We will discuss nominal THD performance and the associated experimental observables. We will show the results of large ensembles of numerical simulations of THD and DT implosions and their simulated diagnostic outputs. These simulations cover a broad range of both nominal and off nominal implosions. We will focus on the development of an experimental implosion performance metric called the experimental ignition threshold factor (ITFX). We will discuss the relationship between ITFX and other integrated performance metrics, including the ignition threshold factor (ITF), the generalized Lawson criterion (GLC), and the hot spot pressure (HSP). We will then consider the experimental results of the recent NIC THD campaign. We will show that we can observe the key quantities for producing a measured ITFX and for inferring the other performance metrics. We will discuss trends in the experimental data, improvement in ITFX, and briefly the upcoming tuning campaign aimed at taking the next steps in performance improvement on the path to ignition on NIF.

Spears, B K; Glenzer, S; Edwards, M J; Brandon, S; Clark, D; Town, R; Cerjan, C; Dylla-Spears, R; Mapoles, E; Munro, D; Salmonson, J; Sepke, S; Weber, S; Hatchett, S; Haan, S; Springer, P; Moses, E; Mapoles, E; Munro, D; Salmonson, J; Sepke, S

2011-12-16T23:59:59.000Z

29

Advanced Fuels Campaign Light Water Reactor Accident Tolerant Fuel Performance Metrics  

SciTech Connect (OSTI)

The safe, reliable and economic operation of the nation’s nuclear power reactor fleet has always been a top priority for the United States’ nuclear industry. As a result, continual improvement of technology, including advanced materials and nuclear fuels, remains central to industry’s success. Decades of research combined with continual operation have produced steady advancements in technology and yielded an extensive base of data, experience, and knowledge on light water reactor (LWR) fuel performance under both normal and accident conditions. In 2011, following the Great East Japan Earthquake, resulting tsunami, and subsequent damage to the Fukushima Daiichi nuclear power plant complex, enhancing the accident tolerance of LWRs became a topic of serious discussion. As a result of direction from the U.S. Congress, the U.S. Department of Energy Office of Nuclear Energy (DOE-NE) initiated an Accident Tolerant Fuel (ATF) Development program. The complex multiphysics behavior of LWR nuclear fuel makes defining specific material or design improvements difficult; as such, establishing qualitative attributes is critical to guide the design and development of fuels and cladding with enhanced accident tolerance. This report summarizes a common set of technical evaluation metrics to aid in the optimization and down selection of candidate designs. As used herein, “metrics” describe a set of technical bases by which multiple concepts can be fairly evaluated against a common baseline and against one another. Furthermore, this report describes a proposed technical evaluation methodology that can be applied to assess the ability of each concept to meet performance and safety goals relative to the current UO2 – zirconium alloy system and relative to one another. The resultant ranked evaluation can then inform concept down-selection, such that the most promising accident tolerant fuel design option(s) can continue to be developed for lead test rod or lead test assembly insertion into a commercial reactor within the desired timeframe (by 2022).

Brad Merrill; Melissa Teague; Robert Youngblood; Larry Ott; Kevin Robb; Michael Todosow; Chris Stanek; Mitchell Farmer; Michael Billone; Robert Montgomery; Nicholas Brown; Shannon Bragg-Sitton

2014-02-01T23:59:59.000Z

30

A suite of metrics for assessing the performance of solar power forecasting  

Science Journals Connector (OSTI)

Abstract Forecasting solar energy generation is a challenging task because of the variety of solar power systems and weather regimes encountered. Inaccurate forecasts can result in substantial economic losses and power system reliability issues. One of the key challenges is the unavailability of a consistent and robust set of metrics to measure the accuracy of a solar forecast. This paper presents a suite of generally applicable and value-based metrics for solar forecasting for a comprehensive set of scenarios (i.e., different time horizons, geographic locations, and applications) that were developed as part of the U.S. Department of Energy SunShot Initiative’s efforts to improve the accuracy of solar forecasting. In addition, a comprehensive framework is developed to analyze the sensitivity of the proposed metrics to three types of solar forecasting improvements using a design-of-experiments methodology in conjunction with response surface, sensitivity analysis, and nonparametric statistical testing methods. The three types of forecasting improvements are (i) uniform forecasting improvements when there is not a ramp, (ii) ramp forecasting magnitude improvements, and (iii) ramp forecasting threshold changes. Day-ahead and 1-hour-ahead forecasts for both simulated and actual solar power plants are analyzed. The results show that the proposed metrics can efficiently evaluate the quality of solar forecasts and assess the economic and reliability impacts of improved solar forecasting. Sensitivity analysis results show that (i) all proposed metrics are suitable to show the changes in the accuracy of solar forecasts with uniform forecasting improvements, and (ii) the metrics of skewness, kurtosis, and Rényi entropy are specifically suitable to show the changes in the accuracy of solar forecasts with ramp forecasting improvements and a ramp forecasting threshold.

Jie Zhang; Anthony Florita; Bri-Mathias Hodge; Siyuan Lu; Hendrik F. Hamann; Venkat Banunarayanan; Anna M. Brockway

2015-01-01T23:59:59.000Z

31

Sustaining Performance Improvements in Energy Intensive Industries  

E-Print Network [OSTI]

Experience has shown that significant opportunity for performance improvements exists in energy intensive operations. Often, efforts to improve efficiency focus on vendor-led initiatives to improve operations of particular equipment. This approach...

Moore, D. A.

2005-01-01T23:59:59.000Z

32

Improving pulverized coal plant performance  

SciTech Connect (OSTI)

A major deliverable of the U.S. Department of Energy (DOE) project ``Engineering Development of Advanced Coal-Fired Low-Emissions Boiler Systems`` (LEBS) is the design of a large, in this case 400 MWe, commercial generating unit (CGU) which will meet the Project objectives. The overall objective of the LEBS Project is to dramatically improve environmental performance of future pulverized coal fired power plants without adversely impacting efficiency or the cost of electricity. The DOE specified the use of near-term technologies, i.e., advanced technologies that partially developed, to reduce NO{sub x}, SO{sub 2} and particulate emissions to be substantially less than current NSPS limits. In addition, air toxics must be in compliance and waste must be reduced and made more disposable. The design being developed by the ABB Team is projected to meet all the contract objectives and to reduce emission of NO{sub x}, SO{sub 2} and particulates to one-fifth to one-tenth NSPS limits while increasing net station efficiency significantly and reducing the cost of electricity. This design and future work are described in the paper.

Regan, J.W.; Borio, R.W.; Palkes, M.; Mirolli, M. [ABB Combustion Engineering, Inc., Windsor, CT (United States); Wesnor, J.D. [ABB Environmental Systems, Birmingham, AL (United States); Bender, D.J. [Raytheon Engineers and Constructors, Inc., New York, NY (United States)

1995-12-31T23:59:59.000Z

33

A building life-cycle information system for tracking building performance metrics  

SciTech Connect (OSTI)

Buildings often do not perform as well in practice as expected during pre-design planning, nor as intended at the design stage. While this statement is generally considered to be true, it is difficult to quantify the impacts and long-term economic implications of a building in which performance does not meet expectations. This leads to a building process that is devoid of quantitative feedback that could be used to detect and correct problems both in an individual building and in the building process itself. One key element in this situation is the lack of a standardized method for documenting and communicating information about the intended performance of a building. This paper describes the Building Life-cycle Information System (BLISS); designed to manage a wide range of building related information across the life cycle of a building project. BLISS is based on the Industry Foundation Classes (IFC) developed by the International Alliance for Interoperability. A BLISS extension to th e IFC that adds classes for building performance metrics is described. Metracker, a prototype tool for tracking performance metrics across the building life cycle, is presented.

Hitchcock, R.J.; Piette, M.A.; Selkowitz, S.E.

1999-04-01T23:59:59.000Z

34

Light Water Reactor Sustainability Program Operator Performance Metrics for Control Room Modernization: A Practical Guide for Early Design Evaluation  

SciTech Connect (OSTI)

As control rooms are modernized with new digital systems at nuclear power plants, it is necessary to evaluate the operator performance using these systems as part of a verification and validation process. There are no standard, predefined metrics available for assessing what is satisfactory operator interaction with new systems, especially during the early design stages of a new system. This report identifies the process and metrics for evaluating human system interfaces as part of control room modernization. The report includes background information on design and evaluation, a thorough discussion of human performance measures, and a practical example of how the process and metrics have been used as part of a turbine control system upgrade during the formative stages of design. The process and metrics are geared toward generalizability to other applications and serve as a template for utilities undertaking their own control room modernization activities.

Ronald Boring; Roger Lew; Thomas Ulrich; Jeffrey Joe

2014-03-01T23:59:59.000Z

35

Implementation Guide - Aviation Program Performance Indicators (Metrics) for use with DOE O 440.2B, Aviation Management And Safety  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Guide provides information regarding Departmental expectations on provisions of DOE 440.2B, identifies acceptable methods of implementing Aviation Program Performance Indicators (Metrics) requirements in the Order, and identifies relevant principles and practices by referencing Government and non-Government standards. Canceled by DOE G 440.2B-1A.

2002-12-10T23:59:59.000Z

36

Implementation Guide - Performance Indicators (Metrics ) for Use with DOE O 440.2B, Aviation Management and Safety  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Guide provides information regarding specific provisions of DOE O 440.2B and is intended to be useful in understanding and implementing performance indicators (metrics) required by the Order. Cancels DOE G 440.2B-1. Canceled by DOE N 251.98.

2005-09-19T23:59:59.000Z

37

Superalloy Surface Treatment for Improved Metal Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Superalloy Surface Treatment Superalloy Surface Treatment for Improved Metal Performance Opportunity Research is active on the patent pending technology, titled "Method to Improve Superalloy Resistance by Surface Treatment." This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Overview To produce power more efficiently and cleanly, the next generation of power and aero turbines along with other essential components will have to operate at extreme temperatures and pressures. Currently advanced single crystal nickel-based superalloys are used in such extreme environments. Even though these components are coated with a bond

38

Improved plant performance through evaporative steam condensing  

SciTech Connect (OSTI)

Combining an open cooling tower and a steam condenser into one common unit is a proven technology with many advantages in power generation application, including reduced first cost of equipment, reduced parasitic energy consumption, simplified design, reduced maintenance, and simplified water treatment, Performance of the steam turbine benefits from the direct approach to wet bulb temperature, and operating flexibility and reliability improve compared to a system with a cooling tower and surface condenser. System comparisons and case histories will be presented to substantiate improved systems economies.

Hutton, D.

1998-07-01T23:59:59.000Z

39

Improved Building Performance Through Effective Communication & Training  

E-Print Network [OSTI]

IMPROVED BUILDING PERFORMANCE THROUGH EFFECTIVE COMMUNICATION & TRAINING Rick Bates Project Manager Environmental Education Foundation Gilbert, AZ ABSTRACT This paper describes the procedures involved in the development of a...) PNC Multi-Family Capital Pure Air Control ESL-IC-10/05-51 4 RickBates.net The HVAC Source The National Air Quality Institute, LLC Thomas Rutherfoord Inc. Trade-Winds Environmental Restoration Vesar, Inc. XL...

Bates, R.

2005-01-01T23:59:59.000Z

40

Smart Grid Projects Are Improving Performance and Helping Consumers...  

Office of Environmental Management (EM)

Smart Grid Projects Are Improving Performance and Helping Consumers Better Manage their Energy Use Smart Grid Projects Are Improving Performance and Helping Consumers Better Manage...

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Improvement of Urea SCR Performance Using Wiremesh Thermolysis...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Improvement of Urea SCR Performance Using Wiremesh Thermolysis Mixer Improvement of Urea SCR Performance Using Wiremesh Thermolysis Mixer Wiremesh mixer development should bring...

42

Improved System Performance and Reduced Cost of a Fuel Reformer...  

Broader source: Energy.gov (indexed) [DOE]

Improved System Performance and Reduced Cost of a Fuel Reformer, LNT, and SCR Aftertreatment System Meeting Emissions Useful Life Requirement Improved System Performance and...

43

Training Framework to Improve the DOE Performance-Based Culture...  

Broader source: Energy.gov (indexed) [DOE]

Training Framework to Improve the DOE Performance-Based Culture Training Framework to Improve the DOE Performance-Based Culture Guidance Memorandum for implementing the Secretaries...

44

Fuel Additivies for Improved Performance of Diesel Aftertreatment...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Additivies for Improved Performance of Diesel Aftertreatment Systems Fuel Additivies for Improved Performance of Diesel Aftertreatment Systems 2002 DEER Conference Presentation:...

45

Electrospray characteristic curves: in pursuit of improved performance...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Electrospray characteristic curves: in pursuit of improved performance in the nano-flow regime. Electrospray characteristic curves: in pursuit of improved performance in the...

46

Extended contingency table: Performance metrics for satellite observations and climate model simulations  

E-Print Network [OSTI]

severe weather environments and the relationship of these environments layer bulk wind shear, are linked to SPC convective watches and verification metrics Weather Service 2005). Severe convection is defined to be associated with at least one of the following

AghaKouchak, Amir

47

Improving Access to Foundational Energy Performance Data  

SciTech Connect (OSTI)

Access to foundational energy performance data is key to improving the efficiency of the built environment. However, stakeholders often lack access to what they perceive as credible energy performance data. Therefore, even if a stakeholder determines that a product would increase efficiency, they often have difficulty convincing their management to move forward. Even when credible data do exist, such data are not always sufficient to support detailed energy performance analyses, or the development of robust business cases. One reason for this is that the data parameters that are provided are generally based on the respective industry norms. Thus, for mature industries with extensive testing standards, the data made available are often quite detailed. But for emerging technologies, or for industries with less well-developed testing standards, available data are generally insufficient to support robust analysis. However, even for mature technologies, there is no guarantee that the data being supplied are the same data needed to accurately evaluate a product?s energy performance. To address these challenges, the U.S. Department of Energy funded development of a free, publically accessible Web-based portal, the Technology Performance Exchange(TM), to facilitate the transparent identification, storage, and sharing of foundational energy performance data. The Technology Performance Exchange identifies the intrinsic, technology-specific parameters necessary for a user to perform a credible energy analysis and includes a robust database to store these data. End users can leverage stored data to evaluate the site-specific performance of various technologies, support financial analyses with greater confidence, and make better informed procurement decisions.

Studer, D.; Livingood, W.; Torcellini, P.

2014-08-01T23:59:59.000Z

48

Improved plasma performance on Large Helical Device  

Science Journals Connector (OSTI)

Since the start of the Large Helical Device(LHD) experiment various attempts have been made to achieve improved plasma performance in LHD [A. Iiyoshi et al. Nucl. Fusion39 1245 (1999)]. Recently an inward-shifted configuration with a magnetic axis position R ax of 3.6 m has been found to exhibit much better plasma performance than the standard configuration with R ax of 3.75 m. A factor of 1.6 enhancement of energy confinement time was achieved over the International Stellarator Scaling 95. This configuration has been predicted to have unfavorable magnetohydrodynamic(MHD)properties based on linear theory even though it has significantly better particle-orbit properties and hence lower neoclassical transport loss. However no serious confinement degradation due to the MHD activities was observed resolving favorably the potential conflict between stability and confinement at least up to the realized volume-averaged beta ??? of 2.4%. An improved radial profile of electron temperature was also achieved in the configuration with magnetic islands minimized by an external perturbation coil system for the Local IslandDivertor (LID). The LID has been proposed for remarkable improvement of plasma confinement like the high (H) mode in tokamaks and the LID function was suggested in limiter experiments.

A. Komori; N. Ohyabu; H. Yamada; O. Kaneko; K. Kawahata; N. Ashikawa; P. deVaries; M. Emoto; H. Funaba; M. Goto; K. Ida; H. Idei; K. Ikeda; N. Inoue; M. Isobe; S. Kado; K. Khlopenkov; T. Kobuchi; S. Kubo; R. Kumazawa; Y. Liang; S. Masuzaki; Y. Matsumoto; T. Minami; J. Miyazawa; T. Morisaki; S. Morita; S. Murakami; S. Muto; T. Mutoh; Y. Nagayama; Y. Nakamura; H. Nakanishi; K. Narihara; Y. Narushima; K. Nishimura; N. Noda; T. Notake; S. Ohdachi; Y. Oka; M. Okamoto; M. Osakabe; T. Ozaki; R. O. Pavlichenko; B. J. Peterson; A. Sagara; K. Saito; S. Sakakibara; R. Sakamoto; H. Sasao; M. Sasao; M. Sato; T. Seki; T. Shimozuma; M. Shoji; H. Suzuki; Y. Takeiri; N. Tamura; K. Tanaka; K. Toi; T. Tokuzawa; Y. Torii; K. Tsumori; I. Yamada; S. Yamaguchi; S. Yamamoto; M. Yokoyama; Y. Yoshimura; K. Y. Watanabe; T. Watanabe; T. Watari; Y. Hamada; K. Itoh; K. Matsuoka; K. Ohkubo; T. Satow; S. Sudo; K. Yamazaki; O. Motojima; M. Fujiwara

2001-01-01T23:59:59.000Z

49

Improving Repository Performance by Using a Fill  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a Fill a Fill Improving Repository Performance by Using a Fill The use of fills, semi-independent of the specific fill material, can improve package performance. The first barrier to prevent releases from the spent nuclear fuel is the waste package itself. The longer the waste package remains intact, the lower the ultimate releases from the spent nuclear fuel. In a typical waste package over half of the interior space is empty space. There are coolant channels in the spent fuel and square fuel assemblies can not fully fill a round waste package. After the package is buried, it will begin to corrode and the walls will thin. Rock falls may cause early failure of the waste package. However, if the package is full, it is more difficult to crush a full package and fail the exterior wall. The behavior of a waste package over time is similar to a soda can. Empty cans are easy to crush. Full, sealed cans are difficult to crush because the fluid inside supports the can.

50

displacement method), accurate data, clearly de-fined future scenarios, and performance metrics  

E-Print Network [OSTI]

relevant to policy goals like reducing greenhouse gas emissions, petroleum inputs, and soil ero- sion. of Missouri, Columbia, MO, 2005). Also available at www.fapri.missouri.edu/outreach/ publications/2005/FAPRI packaging, and effluent processing energy. The metric for petroleum use included crude oil used

Allen, Jont

51

Improving Process Heating System Performance: A Sourcebook for...  

Broader source: Energy.gov (indexed) [DOE]

Process Heating System Performance: A Sourcebook for Industry, Second Edition Improving Process Heating System Performance: A Sourcebook for Industry, Second Edition This...

52

Paint robotics—improving automotive painting performance  

Science Journals Connector (OSTI)

Robotic painting has achieved increased popularity in recent years, due to the flexibility and enhanced performance with such systems. There is a clear trend among major automobile makers to change from hard to flexible automation, and, in that respect, paint robotics is becoming increasingly more important for future paint shop design. New programming tools offer operators and paint engineers better possibility to program and maintain robot systems. With the introduction of the laser, a powerful tool is now available for real-time, in-line control of film build and the related paint process. With the additional advances in robotic-based quality inspection systems, such as a robot-mounted quality inspection camera systems, automotive manufacturers now have the possibility to document and store literally all paint quality data for a multitude of purposes related to process control. Combining these technologies offers a glimpse of a future where true closed-loop process control and quality monitoring can be used to diminish significantly the variation in paint application systems, improve flexibility, quality, and reduce operational costs, while at the same time reduce the complexity of robotic painting systems.

Einar A. Endregaard

2002-01-01T23:59:59.000Z

53

Energy Performance Certification of Buildings: A Policy Tool to Improve  

Open Energy Info (EERE)

Energy Performance Certification of Buildings: A Policy Tool to Improve Energy Performance Certification of Buildings: A Policy Tool to Improve Energy Efficiency Jump to: navigation, search Tool Summary Name: Energy Performance Certification of Buildings: A Policy Tool to Improve Energy Efficiency Agency/Company /Organization: International Energy Agency Sector: Energy Focus Area: Energy Efficiency, Buildings Topics: Policies/deployment programs Resource Type: Guide/manual, Lessons learned/best practices Website: www.iea.org/papers/pathways/buildings_certification.pdf Energy Performance Certification of Buildings: A Policy Tool to Improve Energy Efficiency Screenshot References: nergy Performance Certification of Buildings[1] Logo: Energy Performance Certification of Buildings: A Policy Tool to Improve Energy Efficiency

54

Performance Contracting for Public Sector Improvement Projects  

E-Print Network [OSTI]

Johnson Controls Building Efficiency | Solutions A.Denise Malloy Solutions Account Executive December 18, 2013 Alternative Financing for Energy Efficiency Performance Contracting ESL-KT-13-12-41 CATEE 2013: Clean Air Through Energy Efficiency... Conference, San Antonio, Texas Dec. 16-18 2 Johnson Controls Confidential Overview ? What is Performance Contracting? ? What is the Performance Contracting Process? ? When does Performance Contracting Work Best? ? Government Entity ? ESCO ? 3rd Party...

Mallory, A. D.

2013-01-01T23:59:59.000Z

55

DOE JGI Quality Metrics; Approaches to Scaling and Improving Metagenome Assembly (Metagenomics Informatics Challenges Workshop: 10K Genomes at a Time)  

ScienceCinema (OSTI)

DOE JGI's Alex Copeland on "DOE JGI Quality Metrics" and Michigan State University's C. Titus Brown on "Approaches to Scaling and Improving Metagenome Assembly" at the Metagenomics Informatics Challenges Workshop held at the DOE JGI on October 12-13, 2011.

Copeland, Alex [DOE JGI]; Brown, C Titus [Michigan State University

2013-01-22T23:59:59.000Z

56

Sootblowing optimization for improved boiler performance  

DOE Patents [OSTI]

A sootblowing control system that uses predictive models to bridge the gap between sootblower operation and boiler performance goals. The system uses predictive modeling and heuristics (rules) associated with different zones in a boiler to determine an optimal sequence of sootblower operations and achieve boiler performance targets. The system performs the sootblower optimization while observing any operational constraints placed on the sootblowers.

James, John Robert; McDermott, John; Piche, Stephen; Pickard, Fred; Parikh, Neel J

2013-07-30T23:59:59.000Z

57

Improving Steam System Performance: A Sourcebook for Industry, Second Edition  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide steam system users with a reference that describes the basic steam system components, outlines opportunities for energy and performance improvements, and discusses the benefits of a systems approach in identifying and implementing these improvement opportunities. The sourcebook is divided into three main sections: steam system basics, performance improvement opportunities, and where to find help.

58

Improving Fan System Performance: A Sourcebook for Industry  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide fan system users with a reference outlining opportunities to improve system performance. It is not intended to be a comprehensive technical text on improving fan systems, but rather a document that makes users aware of potential performance improvements, provides some practical guidelines, and details where the user can find more help.

59

Incorporating traffic patterns to improve delivery performance  

E-Print Network [OSTI]

Traffic, construction and other road hazards impact the on-time performance of companies that operate delivery fleets. This study examines how incorporating traffic patterns in vehicle route development compares with ...

Dickinson, Melody J

2010-01-01T23:59:59.000Z

60

Improved System Performance and Reduced Cost of a Fuel Reformer...  

Broader source: Energy.gov (indexed) [DOE]

Improved System Performance and Reduced Cost of a Fuel Reformer, LNT, and SCR Aftertreatment System Meeting Emissions Useful Life Requirement Damodara Poojary, Jacques Nicole,...

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

U. S. Government purposes. DEVICES TO IMPROVE THE PERFORMANCE...  

Office of Scientific and Technical Information (OSTI)

an optimized design was developed in the final phase to achieve improved performance. Test results indicate that with an optimized two-stroke SI engine, the maximum percentage...

62

Request for Information on Improving Performance of Federal Permitting...  

Broader source: Energy.gov (indexed) [DOE]

of Infrastructure Projects: Federal Register Notice Volume 78, No. 168 - August 29, 2013 Request for Information on Improving Performance of Federal Permitting and Review of...

63

Learning from Buildings: Technologies for Measuring, Benchmarking, and Improving Performance  

E-Print Network [OSTI]

and P. Price, 2009. “Building Energy Information Systems:2011. Learning from buildings: technologies for measuring,Information to Improve Building Performance: A Study of

Arens, Edward; Brager, Gail; Goins, John; Lehrer, David

2011-01-01T23:59:59.000Z

64

E-Print Network 3.0 - algorithm performance metrics Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Iowa Collection: Computer Technologies and Information Sciences 7 Statistical Data Reduction for Efficient Application Performance Monitoring Summary: ; and mi j is the...

65

Improving Dynamic Load and Generator Response Performance Tools  

E-Print Network [OSTI]

induction motors that Improving Dynamic Load and Generatorand Generator Response Performance Tools Another important example reported in the literature, also involving inductionand Generator Response Performance Tools As partial answers to these questions we note that the 20% induction

Lesieutre, Bernard C.

2005-01-01T23:59:59.000Z

66

Improving the Energy Performance of Data Centers  

E-Print Network [OSTI]

to most data centers. The second uses air-side economizers (air-side economizer scenario (ASE) requires a different type of air delivery than typically found in a data centerdata centers. The performance ratios for the ASE and WSE scenarios show that air-side economizers

Horvath, A; Shehabi, Arman

2008-01-01T23:59:59.000Z

67

STAR METRICS  

Broader source: Energy.gov [DOE]

Energy continues to define Phase II of the STAR METRICS program, a collaborative initiative to track Research and Development expenditures and their outcomes. Visit the STAR METRICS website for...

68

Improving Pumping System Performance: A Sourcebook for Industry- Second Edition  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide pump system users with a reference that outlines opportunities for improving system performance. It is not meant to be a comprehensive technical text on pumping systems; rather, it provides practical guidelines and information to make users aware of potential performance improvements. Guidance on how to find more information and assistance is also included.

69

Improving Compressed Air System Performance: A Sourcebook for Industry  

Broader source: Energy.gov [DOE]

This sourcebook is designed to provide compressed air system users with a reference that outlines opportunities for system performance improvements. It is not intended to be a comprehensive technical text on improving compressed air systems, but rather a document that makes compressed air system users aware of the performance improvement potential, details some of the significant opportunities, and directs users to additional sources of assistance.

70

Commercial Building Performance Monitoring and Evaluation | Department of  

Broader source: Energy.gov (indexed) [DOE]

Research Projects » Commercial Building Research Projects » Commercial Building Performance Monitoring and Evaluation Commercial Building Performance Monitoring and Evaluation The Building Technologies Office (BTO) uses performance metrics to standardize the measurement and characterization of energy performance in commercial buildings. These metrics help inform the effectiveness of energy efficiency measures in existing buildings and highlight opportunities to improve performance. Various tiers of metrics are available for different users. Performance Metrics Objectives Performance metrics deal with building energy consumption and on-site energy production. To be useful, industry must agree on standard definitions for these metrics and share consistent procedures for collecting and reporting data as well as ensuring data quality.

71

Benchmarking and performance improvement at Rocky Flats Technology Site  

SciTech Connect (OSTI)

The Rocky Flats Environmental Technology Site has initiated a major work process improvement campaign using the tools of formalized benchmarking and streamlining. This paper provides insights into some of the process improvement activities performed at Rocky Flats from November 1995 through December 1996. It reviews the background, motivation, methodology, results, and lessons learned from this ongoing effort. The paper also presents important gains realized through process analysis and improvement including significant cost savings, productivity improvements, and an enhanced understanding of site work processes.

Elliott, C. [Kaiser-Hill Co., (United States); Doyle, G. [EG and G Rocky Flats, Inc., Golden, CO (United States); Featherman, W.L. [Project Performance Corp. (United States)

1997-03-01T23:59:59.000Z

72

Performance Metrics for Intelligent Systems Workshop March 20-22, 2012  

E-Print Network [OSTI]

) - Smart Grid - Space Robotics - Medical & Healthcare Systems and Devices The Proceedings of Per) Workshop will be the eleventh in a series of workshops dedicated to defining measures and methodologies of evaluating performance of intelligent systems. Started in 2000, the PerMIS series focuses on applications

Perkins, Richard A.

73

SPECIFICATION AND IMPLEMENTATION OF IFC BASED PERFORMANCE METRICS TO SUPPORT BUILDING LIFE CYCLE ASSESSMENT OF HYBRID  

E-Print Network [OSTI]

with the introduction of tighter building codes have done little to stem the poor energy performance in commercial on owners to quantify the energy usage of their buildings against benchmarks set by government energy (LBNL), Berkeley, CA, USA ABSTRACT Minimising building life cycle energy consumption is becoming

74

Superior Energy Performance: A Roadmap for Achieving Continual Improvements in Energy Performance  

Broader source: Energy.gov (indexed) [DOE]

Superior Energy Performance: Superior Energy Performance: A Roadmap for Achieving Continual Improvements in Energy Performance March 4, 2010 Joe Almaguer Dow Chemical Paul Scheihing U.S. Department of Energy Agenda: * Superior Energy Performance Overview * Program Design * Program Status and Moving Forward Superior Energy Performance What is Superior Energy Performance? A market-based, ANSI-accredited plant certification program that provides industrial facilities with a roadmap for achieving continual improvement in energy efficiency while boosting competitiveness. Goals: * Drive continual improvement in energy intensity * Develop a transparent system to validate energy intensity improvements and management practices * Encourage broad participation

75

Harmonizing Global Metrics for Data Center Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Page 1 Page 1 Harmonizing Global Metrics for Data Center Energy Efficiency Global Taskforce Reaches Agreement on Measurement Protocols for PUE - Continues Discussion of Additional Energy Efficiency Metrics February 28th, 2011 The data center has become an increasingly important part of most business operations in the twenty-first century. With escalating demand and rising energy prices, it is essential for the owners and operators of these mission critical facilities to assess and improve their performance with energy efficiency metrics. However, even with the global presence of many companies, these metrics are often not applied consistently at a global level. To address these inconsistencies, a group of global leaders has been meeting regularly to agree

76

High Performance computing improvements on bioinformatics consistency-based multiple sequence alignment tools  

Science Journals Connector (OSTI)

Abstract Multiple Sequence Alignment (MSA) is essential for a wide range of applications in Bioinformatics. Traditionally, the alignment accuracy was the main metric used to evaluate the goodness of MSA tools. However, with the growth of sequencing data, other features, such as performance and the capacity to align larger datasets, are gaining strength. To achieve these new requirements, without affecting accuracy, the use of high-performance computing (HPC) resources and techniques is crucial. In this paper, we apply HPC techniques in T-Coffee, one of the more accurate but less scalable MSA tools. We integrate three innovative solutions into T-Coffee: the Balanced Guide Tree to increase the parallelism/performance, the Optimized Library Method with the aim of enhancing the scalability and the Multiple Tree Alignment, which explores different alignments in parallel to improve the accuracy. The results obtained show that the resulting tool, MTA-TCoffee, is able to improve the scalability in both the execution time and also the number of sequences to be aligned. Furthermore, not only is the alignment accuracy not affected by these improvements, as would be expected, but it improves significantly. Finally, we emphasize that the presented methods are not just restricted to T-Coffee, but may be implemented in any other alignment tools that use similar algorithms (progressive alignment, consistency or guide trees).

Miquel Orobitg; Fernando Guirado; Fernando Cores; Jordi Llados; Cedric Notredame

2014-01-01T23:59:59.000Z

77

Does laparoscopic simulation predict intraoperative performance? A comparison between the Fundamentals of Laparoscopic Surgery and LapVR evaluation metrics  

Science Journals Connector (OSTI)

AbstractBackground Considerable resources have been invested in low- and high-fidelity simulators in surgical training. To our knowledge, no investigation has compared the 2 head to head for operative assessment purposes. The purpose of this study was to assess the Fundamentals of Laparoscopic Surgery (FLS) low-fidelity video trainer and LapVR (high-fidelity virtual-reality simulator) for (1) construct and (2) predictive validity using a human cholecystectomy model. Methods Twenty-six participants performed tasks from the FLS program and the LapVR simulator as well as a human laparoscopic cholecystectomy. Performance was evaluated using FLS and LapVR metrics and the Objective Structured Assessment of Technical Skills previously validated rating scale. Results Construct and predictive validity were strongly demonstrated for FLS tasks but only incompletely for LapVR. Conclusions Efforts should be focused on using the well-validated lower-cost FLS video trainer for assessment of laparoscopic skills. The high-cost LapVR remains experimental in resource-constrained training programs.

Sarah N. Steigerwald; Jason Park; Krista M. Hardy; Lawrence M. Gillman; Ashley S. Vergis

2014-01-01T23:59:59.000Z

78

DOE RFP Seeks Projects for Improving Environmental Performance of  

Broader source: Energy.gov (indexed) [DOE]

DOE RFP Seeks Projects for Improving Environmental Performance of DOE RFP Seeks Projects for Improving Environmental Performance of Unconventional Natural Gas Technologies DOE RFP Seeks Projects for Improving Environmental Performance of Unconventional Natural Gas Technologies December 21, 2011 - 12:00pm Addthis Washington, DC - Research projects to study ways for improving the environmental performance of unconventional gas development are being sought by the National Energy Technology Laboratory (NETL), a facility of the U.S. Department of Energy's (DOE) Office of Fossil Energy. The research opportunity was released in a request for proposals (RFP) issued by NETL's contractor, the Research Partnership to Secure Energy for America (RPSEA), with a deadline of March 6, 2012. A second RFP, focusing on the needs of small oil and natural gas producers, was released

79

Improving consumer value through enhanced performance around the world  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Improving consumer value through enhanced performance around the Improving consumer value through enhanced performance around the world Improving consumer value through enhanced performance around the world LANL statistical tools have helped create Reliability Technology (RT), which increases the overall fraction of productive manufacturing time, or "uptime," for its internal manufacturing lines. April 3, 2012 Improving consumer value through enhanced performance around the world Reliability Technology (RT) is a comprehensive reliability engineering system developed by P&G to increase the overall fraction of productive manufacturing time, or "uptime" for its internal manufacturing lines. The genesis for the system came from the large amount of runtime data collected on P&G's manufacturing lines, coupled with the Laboratory's

80

Extension of Comment Period on Improving Performance of Federal Permitting  

Broader source: Energy.gov (indexed) [DOE]

Extension of Comment Period on Improving Performance of Federal Extension of Comment Period on Improving Performance of Federal Permitting and Review of Infrastructure Projects: Federal Register Notice Volume 78, No. 186 - September 25, 2013 Extension of Comment Period on Improving Performance of Federal Permitting and Review of Infrastructure Projects: Federal Register Notice Volume 78, No. 186 - September 25, 2013 On August 29, 2013, the U.S. Department of Energy (DOE) published a Request for Information seeking information on a draft Integrated, Interagency Pre-Application (IIP) Process for significant onshore electric transmission projects requiring Federal authorizations. This notice announces an extension of the public comment period for submitting comments regarding the IIP Process to October 31, 2013. Extension of Comment Period on Improving Performance of Federal Permitting

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Extension of Comment Period on Improving Performance of Federal Permitting  

Broader source: Energy.gov (indexed) [DOE]

Extension of Comment Period on Improving Performance of Federal Extension of Comment Period on Improving Performance of Federal Permitting and Review of Infrastructure Projects: Federal Register Notice Volume 78, No. 186 - September 25, 2013 Extension of Comment Period on Improving Performance of Federal Permitting and Review of Infrastructure Projects: Federal Register Notice Volume 78, No. 186 - September 25, 2013 On August 29, 2013, the U.S. Department of Energy (DOE) published a Request for Information seeking information on a draft Integrated, Interagency Pre-Application (IIP) Process for significant onshore electric transmission projects requiring Federal authorizations. This notice announces an extension of the public comment period for submitting comments regarding the IIP Process to October 31, 2013. Extension of Comment Period on Improving Performance of Federal Permitting

82

Improving Face Recognition Performance Using a Hierarchical Bayesian Model  

E-Print Network [OSTI]

which can result in an improved recognition performance over already existing baseline approaches. We use Kernelized Fisher Discriminant Analysis (KFLD) as our baseline as it is superior to PCA in a way that it produces well separated classes even under...

Shikaripur Nadig, Ashwini

2010-04-27T23:59:59.000Z

83

Improving Motor and Drive System Performance – A Sourcebook for Industry  

Broader source: Energy.gov [DOE]

This sourcebook outlines opportunities to improve motor and drive systems performance, including practical guidelines, energy efficiency assessment instructions, and referrals to other information and assistance such as software, videos, and training opportunities.

84

Thermal simulation of batteries for improving E-powertrain performance  

Science Journals Connector (OSTI)

The electrical energy is stored, for example, in battery systems with voltages of between 12 V ... a simulation tool, 3D-Electrical / 3D-Thermal Co-Simulation for improving electric powertrain performance.

Dipl.-Ing. Michael Clauss; Jakob Hennig; Dr. Carolus Grünig…

2014-10-01T23:59:59.000Z

85

NASA's Marshall Space Flight Center Improves Cooling System Performance  

Broader source: Energy.gov [DOE]

Case study details Marshall Space Flight Center's innovative technologies to improve water efficiency and cooling performance for one of its problematic cooling systems. The program saved the facility more than 800,000 gallons of water in eight months.

86

Surveillance metrics sensitivity study.  

SciTech Connect (OSTI)

In September of 2009, a Tri-Lab team was formed to develop a set of metrics relating to the NNSA nuclear weapon surveillance program. The purpose of the metrics was to develop a more quantitative and/or qualitative metric(s) describing the results of realized or non-realized surveillance activities on our confidence in reporting reliability and assessing the stockpile. As a part of this effort, a statistical sub-team investigated various techniques and developed a complementary set of statistical metrics that could serve as a foundation for characterizing aspects of meeting the surveillance program objectives. The metrics are a combination of tolerance limit calculations and power calculations, intending to answer level-of-confidence type questions with respect to the ability to detect certain undesirable behaviors (catastrophic defects, margin insufficiency defects, and deviations from a model). Note that the metrics are not intended to gauge product performance but instead the adequacy of surveillance. This report gives a short description of four metrics types that were explored and the results of a sensitivity study conducted to investigate their behavior for various inputs. The results of the sensitivity study can be used to set the risk parameters that specify the level of stockpile problem that the surveillance program should be addressing.

Hamada, Michael S. (Los Alamos National Laboratory); Bierbaum, Rene Lynn; Robertson, Alix A. (Lawrence Livermore Laboratory)

2011-09-01T23:59:59.000Z

87

Surveillance Metrics Sensitivity Study  

SciTech Connect (OSTI)

In September of 2009, a Tri-Lab team was formed to develop a set of metrics relating to the NNSA nuclear weapon surveillance program. The purpose of the metrics was to develop a more quantitative and/or qualitative metric(s) describing the results of realized or non-realized surveillance activities on our confidence in reporting reliability and assessing the stockpile. As a part of this effort, a statistical sub-team investigated various techniques and developed a complementary set of statistical metrics that could serve as a foundation for characterizing aspects of meeting the surveillance program objectives. The metrics are a combination of tolerance limit calculations and power calculations, intending to answer level-of-confidence type questions with respect to the ability to detect certain undesirable behaviors (catastrophic defects, margin insufficiency defects, and deviations from a model). Note that the metrics are not intended to gauge product performance but instead the adequacy of surveillance. This report gives a short description of four metrics types that were explored and the results of a sensitivity study conducted to investigate their behavior for various inputs. The results of the sensitivity study can be used to set the risk parameters that specify the level of stockpile problem that the surveillance program should be addressing.

Bierbaum, R; Hamada, M; Robertson, A

2011-11-01T23:59:59.000Z

88

Improving Performance of Federal Permitting and Review of Infrastructure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Improving Performance of Federal Permitting and Review of Infrastructure Improving Performance of Federal Permitting and Review of Infrastructure Projects Improving Performance of Federal Permitting and Review of Infrastructure Projects The Department of Energy's (DOE) Office of Electricity Delivery and Energy Reliability, in collaboration with the Member Agencies of the Steering Committee (Member Agencies) created under Executive Order 13604 of March 22, 2012, and pursuant to the June 7, 2013 Transmission Presidential Memorandum, is seeking public input on a draft Integrated, Interagency Pre-Application (IIP) Process. The proposed IIP Process is intended to improve interagency and intergovernmental coordination focused on ensuring that project proponents develop and submit accurate and complete information early in the project planning process to facilitate efficient

89

Improving Transit System Performance with the Benefit of Automatic Data  

E-Print Network [OSTI]

database · Providing insight into normal operations, special events, unusual weather, etc. Reality · Most Seminar Series, University of Minnesota November 4, 2008 5 Three Applications · New Metrics for London Estimation in Chicago2 Ref: 1. "Rail OD Estimation and Journey Time Reliability Metrics Using Automated Fare

Minnesota, University of

90

Request for Information on Improving Performance of Federal Permitting and  

Broader source: Energy.gov (indexed) [DOE]

Information on Improving Performance of Federal Information on Improving Performance of Federal Permitting and Review of Infrastructure Projects: Federal Register Notice Volume 78, No. 168 - August 29, 2013 Request for Information on Improving Performance of Federal Permitting and Review of Infrastructure Projects: Federal Register Notice Volume 78, No. 168 - August 29, 2013 The Department of Energy's Office of Electricity Delivery and Energy Reliability, in collaboration with the Member Agencies of the Steering Committee (Member Agencies) created under Executive Order 13604 of March 22, 2012, and pursuant to the June 7, 2013 Transmission Presidential Memorandum, is seeking information on a draft Integrated, Interagency Pre-Application (IIP) Process for significant onshore electric transmission projects requiring Federal Authorization(s).

91

Potential improvements in SiGe radioisotope thermoelectric generator performance  

SciTech Connect (OSTI)

In accordance with NASA{close_quote}s slogan: {open_quotes}Better, Cheaper, Faster,{close_quotes} this paper will address potential improvements to SiGe RTG technology to make them Better. RTGs are doubtless cheaper than {open_quotes}paper designs{close_quotes} which are better and cheaper until development, performance and safety test costs are considered. RTGs have the advantage of being fully developed and tested in the rigors of space for over twenty years. Further, unless a new system can be accelerated tested, as were the RTGs, they cannot be deployed reliably unless a number of systems have succeeded for test periods exceeding the mission lifetime. Two potential developments are discussed that can improve the basic RTG performance by 10 to 40{sup +}{percent} depending on the mission profile. These improvements could be demonstrated in years. Accelerated testing could also be performed in this period to preserve existing RTG reliability. Data from a qualification tested RTG will be displayed, while not definitive, to support the conclusions. Finally, it is anticipated that other investigators will be encouraged to suggest further modifications to the basic RTG design to improve its performance. {copyright} {ital 1999 American Institute of Physics.}

Mowery, A.L. [4 Myrtle Bank Lane, Hilton Head Island, South Carolina, 29926-2650 (United States)

1999-01-01T23:59:59.000Z

92

Improving the performance of floating solar pool covers  

SciTech Connect (OSTI)

Experimental and analytical analyses are presented for the evaluation of heat transfer through floating solar swimming pool covers. Two improved floating solar swimming pool cover designs are proposed and investigated in this paper. The results conclusively show that both new cover designs should have significantly better performance than conventional floating solar swimming pool covers.

Cole, M.A.; Lowrey, P. (San Diego State Univ., CA (United States). Dept. of Mechanical Engineering)

1992-11-01T23:59:59.000Z

93

Improved Initial Performance of Si Nanoparticles by Surface Oxide Reduction  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Improved Initial Performance of Si Nanoparticles by Surface Oxide Reduction Improved Initial Performance of Si Nanoparticles by Surface Oxide Reduction for Lithium-Ion Battery Application Title Improved Initial Performance of Si Nanoparticles by Surface Oxide Reduction for Lithium-Ion Battery Application Publication Type Journal Article Year of Publication 2011 Authors Xun, Shidi, Xiangyun Song, Michael E. Grass, Daniel K. Roseguo, Z. Liu, Vincent S. Battaglia, and Gao Li Journal Electrochemical Solid-State Letters Volume 14 Start Page A61 Issue 5 Pagination A61-A63 Date Published 02/2001 Keywords Electrochemistry, elemental semiconductors, etching, lithium, nanoparticles, secondary cells, silicon, thermal analysis, transmission electron microscopy, X-ray photoelectron spectra Abstract This study characterizes the native oxide layer of Si nanoparticles and evaluates its effect on their performance for Li-ion batteries. x-ray photoelectron spectroscopy and transmission electron microscopy were applied to identify the chemical state and morphology of the native oxide layer. Elemental and thermogravimetric analysis were used to estimate the oxide content for the Si samples. Hydrofluoric acid was used to reduce the oxide layer. A correlation between etching time and oxide content was established. The initial electrochemical performances indicate that the reversible capacity of etched Si nanoparticles was enhanced significantly compared with that of the as-received Si sample.

94

TCP HACK: a mechanism to improve performance over lossy links  

Science Journals Connector (OSTI)

In recent years, wireless networks have become increasingly common and an increasing number of devices are communicating with each other over lossy links. Unfortunately, TCP performs poorly over lossy links as it is unable to differentiate the loss due to packet corruption from that due to congestion. In this paper, we present an extension to TCP which enables TCP to distinguish packet corruption from congestion in lossy environments resulting in improved performance. We refer to this extension as the HeAder ChecKsum option (HACK). We implemented our algorithm in the Linux kernel and performed various tests to determine its effectiveness. Our results have shown that HACK performs substantially better than both selective acknowledgement (SACK) and NewReno in cases where burst corruptions are frequent. We also found that HACK can co-exist very nicely with SACK and performs even better with SACK enabled.

R.K. Balan; B.P. Lee; K.R.R. Kumar; L. Jacob; W.K.G. Seah; A.L. Ananda

2002-01-01T23:59:59.000Z

95

FY 2013 Performance Evaluation Report Sandia Corporation, Contract...  

National Nuclear Security Administration (NNSA)

Management System (FIMS) performance metrics, and exceeded targets for fleet fuel, energy, and water intensity reduction. Sandia also made significant improvement with...

96

New MEA Materials for Improved DMFC Performance, Durability and Cost  

SciTech Connect (OSTI)

Abstract Project Title: New MEA Materials for Improved DMFC Performance, Durability and Cost The University of North Florida (UNF)--with project partners the University of Florida, Northeastern University, and Johnson Matthey--has recently completed the Department of Energy (DOE) project entitled “New MEA Materials for Improved DMFC Performance, Durability and Cost”. The primary objective of the project was to advance portable fuel cell MEA technology towards the commercial targets as laid out in the DOE R&D roadmap by developing a passive water recovery MEA (membrane electrode assembly). Developers at the University of North Florida identified water management components as an insurmountable barrier to achieving the required system size and weight necessary to achieve the energy density requirements of small portable power applications. UNF developed an innovative “passive water recovery” MEA for direct methanol fuel cells (DMFC) which provides a path to system simplification and optimization. The passive water recovery MEA incorporates a hydrophobic, porous, barrier layer within the cathode electrode, so that capillary pressure forces the water produced at the cathode through holes in the membrane and back to the anode. By directly transferring the water from the cathode to the anode, the balance of plant is very much simplified and the need for heavy, bulky water recovery components is eliminated. At the heart of the passive water recovery MEA is the UNF DM-1 membrane that utilizes a hydrocarbon structure to optimize performance in a DMFC system. The membrane has inherent performance advantages, such as a low methanol crossover (high overall efficiency), while maintaining a high proton conductivity (good electrochemical efficiency) when compared to perfluorinated sulfonic acid membranes such as Nafion. Critically, the membrane provides an extremely low electro-osmotic drag coefficient of approximately one water molecule per proton (versus the 2-3 for Nafion) that minimizes flooding issues at the cathode, which often fatally limit open cathode MEA performance. During this successfully completed DOE program the project team met all of the project goals. The team built and tested over 1,500 MEAs with a wide range of different manufacturing chemistries and process conditions. This project demonstrated that the UNF MEA design could be fabricated with a high degree of reproducibility and repeatability. Some specific achievements include: • Durability - The UNF MEA has demonstrated over 11,000 hours continuous operation in a short stack configuration. The root cause of an off-state degradation issue was successfully mitigated by modifying the manufacturing process by changing the wetting agents used in the catalyst printing. The stability of the anode electrode was increased by replacing the anode electrodes with a stabilized PtRu/C catalyst. The overall degradation rate was significantly reduced through optimization of the MEA operating conditions. • Performance - The project team optimized the performance of the critical MEA sub-components. By increasing the membrane thickness, the methanol crossover was reduced, thereby increasing the fuel utilization efficiency without sacrificing any electrochemical performance. The reduction in methanol crossover increased the fuel utilization efficiency from 78% to over 90%. The liquid barrier layer was optimized to provide improved reproducibility, thereby improving stack voltage uniformity and reliability. Additionally the barrier layer water permeability was lowered without sacrificing any power density, thereby enabling increased operating temperature. Improvements in the cathode catalyst selection and coating provided an additional 10% to 20% improvement in the MEA performance at the target operating range. • Cost - Commercially scalable processes were developed for all of the critical MEA components which led to improved yields and lower overall manufacturing costs. Furthermore, significant steps have been made in improving the process control, which increases MEA

Fletcher, James H. [University of North Florida; Campbell, Joseph L. [University of North Florida; Cox, Philip [University of North Florida; Harrington, William J. [University of North Florida

2013-09-16T23:59:59.000Z

97

Improving Building Performance at Urban Scale with a Framework for  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Building Performance at Urban Scale with a Framework for Building Performance at Urban Scale with a Framework for Real-time Data Sharing Title Improving Building Performance at Urban Scale with a Framework for Real-time Data Sharing Publication Type Conference Proceedings LBNL Report Number LBNL-6303E Year of Publication 2013 Authors Pang, Xiufeng, Tianzhen Hong, and Mary Ann Piette Date Published 05/2013 Keywords building performance, energy efficiency, energy modeling, optimal operation, urban scale. Abstract This paper describes work in progress toward an urban-scale system aiming to reduce energy use in neighboring buildings by providing three components: a database for accessing past and present weather data from high quality weather stations; a network for communicating energy-saving strategies between building owners; and a set of modeling tools for real-time building energy simulation.

98

Agriculture model development to improve performance of the Community Land  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Agriculture model development to improve performance of the Community Land Agriculture model development to improve performance of the Community Land Model April 3, 2013 The important relationships between climate change and agriculture are uncertain, particularly the feedbacks related to the carbon cycle. Nevertheless, vegetation models have not yet considered the full impacts of management practices and nitrogen feedbacks on the carbon cycle. We are working to meet this need. We have integrated three crop types (corn, soybean, and spring wheat) into the Community Land Model (CLM). In developing the agriculture version of CLM, we added plant processes related to management practices and nitrogen cycling. A manuscript documenting our changes to CLM has been accepted for publication in Geoscientific Model Development Discussions ("Modeling

99

Improving Repository Performance by Using DU Dioxide Fill  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DU Dioxide Fill DU Dioxide Fill Improving Repository Performance by Using DU Dioxide Fill Fills may improve repository performance by acting as sacrificial materials, which delay the degradation of SNF uranium dioxide. Because fill and SNF have the same chemical form of uranium (uranium dioxide), the DU dioxide in a repository is the only fill which has the same behavior as that of the SNF. In the natural environment, some uranium ore deposits have remained intact for very long periods of time. The outer parts of the ore deposit degrade while the inner parts of the deposit are protected. The same approach is proposed herein for protecting SNF. The application could use half or more of the DU inventory in the United States. Behavior of Uranium and Potential Behavior of a Waste Package with SNF and Fill

100

Performance improvement plan use in implementing conduct of operations  

SciTech Connect (OSTI)

The Nuclear Materials Processing and Waste Management and Environmental Restoration Divisions (NMPD/WMER) of the Westinghouse Savannah River Company (WSRC) operate nineteen individual facilities at Savannah River Site (SRS). These facilities produce the fuel and target assemblies for the SRS Reactors: extract Tritium, Plutonium, Uranium and other isotopes from the irradiated fuel and targets; safely store the radioactive waste from ongoing operations; and encapsulate the waste in a final waste form for long term disposal. Continuous improvement in the operation of all facilities and in the conduct of business at SRS is the goal embodied in the NMPD/WMER Performance Improvement Plan (PIP) discussed in this document. The NMPD/WMER PIP is the mechanism used to establish a basis for operations that will lead to achievement of a performance level that will meet or exceed the standards developed and used in the commercial nuclear power industry.

Baumhardt, R.J.

1992-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Performance improvement plan use in implementing conduct of operations  

SciTech Connect (OSTI)

The Nuclear Materials Processing and Waste Management and Environmental Restoration Divisions (NMPD/WMER) of the Westinghouse Savannah River Company (WSRC) operate nineteen individual facilities at Savannah River Site (SRS). These facilities produce the fuel and target assemblies for the SRS Reactors: extract Tritium, Plutonium, Uranium and other isotopes from the irradiated fuel and targets; safely store the radioactive waste from ongoing operations; and encapsulate the waste in a final waste form for long term disposal. Continuous improvement in the operation of all facilities and in the conduct of business at SRS is the goal embodied in the NMPD/WMER Performance Improvement Plan (PIP) discussed in this document. The NMPD/WMER PIP is the mechanism used to establish a basis for operations that will lead to achievement of a performance level that will meet or exceed the standards developed and used in the commercial nuclear power industry.

Baumhardt, R.J.

1992-01-01T23:59:59.000Z

102

Performance improvement of direct- and indirect-fired heaters  

SciTech Connect (OSTI)

The operating performance of direct and indirect heaters is discussed, and principles and guidelines that can be applied to effect improvements in efficiency are presented. This paper also discusses the associated heater efficiencies and several useful operating techniques to approach the maximum, steady-state heater efficiency. The techniques presented apply to all types of direct-and indirect-fired heaters: salt bath heaters, propane vaporizers, heater/treaters, production heaters, and glycol and amine regenerators.

Sams, G.W.; Hunter, J.D.

1988-08-01T23:59:59.000Z

103

Metrics for Evaluating the Accuracy of Solar Power Forecasting (Presentation)  

SciTech Connect (OSTI)

This presentation proposes a suite of metrics for evaluating the performance of solar power forecasting.

Zhang, J.; Hodge, B.; Florita, A.; Lu, S.; Hamann, H.; Banunarayanan, V.

2013-10-01T23:59:59.000Z

104

Improving Dynamic Load and Generator Response PerformanceTools  

SciTech Connect (OSTI)

This report is a scoping study to examine research opportunities to improve the accuracy of the system dynamic load and generator models, data and performance assessment tools used by CAISO operations engineers and planning engineers, as well as those used by their counterparts at the California utilities, to establish safe operating margins. Model-based simulations are commonly used to assess the impact of credible contingencies in order to determine system operating limits (path ratings, etc.) to ensure compliance with NERC and WECC reliability requirements. Improved models and a better understanding of the impact of uncertainties in these models will increase the reliability of grid operations by allowing operators to more accurately study system voltage problems and the dynamic stability response of the system to disturbances.

Lesieutre, Bernard C.

2005-11-01T23:59:59.000Z

105

Sustainable Disposal Cell Covers: Legacy Management Practices, Improvements, and Long-Term Performance  

Broader source: Energy.gov [DOE]

Sustainable Disposal Cell Covers: Legacy Management Practices, Improvements, and Long-Term Performance

106

Feed-Pump Hydraulic Performance and Design Improvement, Phase I:  

Office of Scientific and Technical Information (OSTI)

Feed-Pump Hydraulic Performance Feed-Pump Hydraulic Performance and Design Improvement, Phase I: J2esearch Program Design Volume 2 EPRI EPRI CS-2323 Volume 2 Project 1884-6 Final Report March 1982 Keywords: Feed Pumps Feed Pump Reliability Feed Pump Hydraulics Feed Pump Design Feed Pump Research Feed Pump Specifications Prepared by Borg-Warner Corporation (Byron Jackson Pump Division and Borg-Warner Research Center) Carson, California and Massa^ f Technology Cambri__ . s ,-T. a a *a_^"nt.- ji^, w « ' jm.m ^j.^M\MMMim^mjii'mmmjmiiiimm\i- " I E CT R I C P 0 W E R R E S E A R C H I N ST ITO T E DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees,

107

Improvements in EMC performance of inverter-fed motor drives  

SciTech Connect (OSTI)

An experimental investigation of conducted radio-noise emission from a conventional pulse width modulated (PWM) inverter of medium power feeding an induction motor is described. It is determined that the inverter system generates considerable impulse currents through the power leads feeding the system resulting in serious conducted electromagnetic interference (EMI) problems and significant voltage waveform distortion in the power system. The dominant emission sources in the system are identified. A proposed model of the drive system for the purpose of evaluation of EMI are developed. Several low-cost strategies for improvement in EMC performance of the PWM inverter are then proposed. Experimental results demonstrate that disturbance from the modified system can be dramatically reduced and that the EMC performance of the system has come very close to meeting the IEC CISPR and FCC limits on conducted emissions for digital devices.

Zhong, E.; Lipo, T.A. [Univ. of Wisconsin, Madison, WI (United States). Dept. of Electrical and Computer Engineering

1995-11-01T23:59:59.000Z

108

Improving Emergency Response and Human-Robotic Performance  

SciTech Connect (OSTI)

Preparedness for chemical, biological, and radiological/nuclear incidents at nuclear power plants (NPPs) includes the deployment of well trained emergency response teams. While teams are expected to do well, data from other domains suggests that the timeliness and accuracy associated with incident response can be improved through collaborative human-robotic interaction. Many incident response scenarios call for multiple, complex procedure-based activities performed by personnel wearing cumbersome personal protective equipment (PPE) and operating under high levels of stress and workload. While robotic assistance is postulated to reduce workload and exposure, limitations associated with communications and the robot’s ability to act independently have served to limit reliability and reduce our potential to exploit human –robotic interaction and efficacy of response. Recent work at the Idaho National Laboratory (INL) on expanding robot capability has the potential to improve human-system response during disaster management and recovery. Specifically, increasing the range of higher level robot behaviors such as autonomous navigation and mapping, evolving new abstractions for sensor and control data, and developing metaphors for operator control have the potential to improve state-of-the-art in incident response. This paper discusses these issues and reports on experiments underway intelligence residing on the robot to enhance emergency response.

David I. Gertman; David J. Bruemmer; R. Scott Hartley

2007-08-01T23:59:59.000Z

109

Continuous improvement of the MHTGR safety and competitive performance  

SciTech Connect (OSTI)

An increase in reactor module power from 350 to 450 MW(t) would markedly improve the economics of the Modular High Temperature Gas-Cooled Reactor (MHTGR). The higher power level was recommended as the result of an in-depth cost reduction study undertaken to compete with the declining price of fossil fuel. The safety assessment confirms that the high level of safety, which relies on inherent characteristics and passive features, is maintained at the elevated power level. Preliminary systems, nuclear, and safety performance results are discussed for the recommended 450 MW(t) design. Optimization of plant parameters and design modifications accommodated the operation of the steam generator and circulator at the higher power level. Events in which forced cooling is lost, designated as conduction cooldowns are described in detail. For the depressurized conduction cooldown, without full helium inventory, peak fuel temperatures are significantly lowered. A more negative temperature coefficient of reactivity was achieved while maintaining an adequate fuel cycle and reactivity control. Continual improvement of the MHTGR delivers competitive performance without relinquishing the high safety margins demanded of the next generation of power plants.

Eichenberg, T.W.; Etzel, K.T.; Mascaro, L.L.; Rucker, R.A.

1992-05-01T23:59:59.000Z

110

Performance improvement options for the supercritical carbon dioxide brayton cycle.  

SciTech Connect (OSTI)

The supercritical carbon dioxide (S-CO{sub 2}) Brayton cycle is under development at Argonne National Laboratory as an advanced power conversion technology for Sodium-Cooled Fast Reactors (SFRs) as well as other Generation IV advanced reactors as an alternative to the traditional Rankine steam cycle. For SFRs, the S-CO{sub 2} Brayton cycle eliminates the need to consider sodium-water reactions in the licensing and safety evaluation, reduces the capital cost of the SFR plant, and increases the SFR plant efficiency. Even though the S-CO{sub 2} cycle has been under development for some time and optimal sets of operating parameters have been determined, those earlier development and optimization studies have largely been directed at applications to other systems such as gas-cooled reactors which have higher operating temperatures than SFRs. In addition, little analysis has been carried out to investigate cycle configurations deviating from the selected 'recompression' S-CO{sub 2} cycle configuration. In this work, several possible ways to improve S-CO{sub 2} cycle performance for SFR applications have been identified and analyzed. One set of options incorporates optimization approaches investigated previously, such as variations in the maximum and minimum cycle pressure and minimum cycle temperature, as well as a tradeoff between the component sizes and the cycle performance. In addition, the present investigation also covers options which have received little or no attention in the previous studies. Specific options include a 'multiple-recompression' cycle configuration, intercooling and reheating, as well as liquid-phase CO{sub 2} compression (pumping) either by CO{sub 2} condensation or by a direct transition from the supercritical to the liquid phase. Some of the options considered did not improve the cycle efficiency as could be anticipated beforehand. Those options include: a double recompression cycle, intercooling between the compressor stages, and reheating between the turbine stages. Analyses carried out as part of the current investigation confirm the possibilities of improving the cycle efficiency that have been identified in previous investigations. The options in this group include: increasing the heat exchanger and turbomachinery sizes, raising of the cycle high end pressure (although the improvement potential of this option is very limited), and optimization of the low end temperature and/or pressure to operate as close to the (pseudo) critical point as possible. Analyses carried out for the present investigation show that significant cycle performance improvement can sometimes be realized if the cycle operates below the critical temperature at its low end. Such operation, however, requires the availability of a heat sink with a temperature lower than 30 C for which applicability of this configuration is dependent upon the climate conditions where the plant is constructed (i.e., potential performance improvements are site specific). Overall, it is shown that the S-CO{sub 2} Brayton cycle efficiency can potentially be increased to 45 %, if a low temperature heat sink is available and incorporation of larger components (e.g.., heat exchangers or turbomachinery) having greater component efficiencies does not significantly increase the overall plant cost.

Moisseytsev, A.; Sienicki, J. J.; Nuclear Engineering Division

2008-07-17T23:59:59.000Z

111

A metrological large range atomic force microscope with improved performance  

Science Journals Connector (OSTI)

A metrological large range atomic force microscope (Met. LR-AFM) has been set up and improved over the past years at Physikalisch-Technische Bundesanstalt (PTB). Being designed as a scanning sample type instrument the sample is moved in three dimensions by a mechanical ball bearing stage in combination with a compact z -piezostage. Its topography is detected by a position-stationary AFM head. The sample displacement is measured by three embedded miniature homodyneinterferometers in the x y and z directions. The AFM head is aligned in such a way that its cantilever tip is positioned on the sample surface at the intersection point of the three interferometer measurement beams for satisfying the Abbe measurement principle. In this paper further improvements of the Met. LR-AFM are reported. A new AFM head using the beam deflection principle has been developed to reduce the influence of parasitic optical interference phenomena. Furthermore an off-line Heydemann correction method has been applied to reduce the inherent interferometer nonlinearities to less than 0.3 nm ( p - v ) . Versatile scanning functions for example radial scanning or local AFM measurement functions have been implemented to optimize the measurement process. The measurement software is also improved and allows comfortable operations of the instrument via graphical user interface or script-based command sets. The improved Met. LR-AFM is capable of measuring for instance the step height lateral pitch line width nanoroughness and other geometrical parameters of nanostructures.Calibration results of a one-dimensional grating and a set of film thickness standards are demonstrated showing the excellent metrological performance of the instrument.

Gaoliang Dai; Helmut Wolff; Frank Pohlenz; Hans-Ulrich Danzebrink

2009-01-01T23:59:59.000Z

112

ENERGY STAR Using On-site Renewable Energy as the Next Step to Improving Energy Performance and Reducing Emissions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ON-SITE RENEWABLE ENERGY AS THE NEXT STEP ON-SITE RENEWABLE ENERGY AS THE NEXT STEP TO IMPROVING ENERGY PERFORMANCE AND REDUCING EMISSIONS jcpenney has a corporate energy management strategy that includes using energy efficient technologies in its stores and encouraging energy conservation. As part of this strategy, the company also investigated generating electricity through on-site renewable energy. jcpenney is a partner in the U.S. Environmental Protection Agency (EPA) ENERGY STAR Commercial Buildings Program, and has been tracking building energy use since 2006 using EPA's free benchmarking tool, Portfolio Manager. Portfolio Manager provides a 1-100 energy performance score similar to a "miles-per-gallon" metric for vehicle fuel efficiency. Those buildings that achieve an ENERGY STAR score

113

Improving the performance of algorithms to find communities in networks  

Science Journals Connector (OSTI)

Most algorithms to detect communities in networks typically work without any information on the cluster structure to be found, as one has no a priori knowledge of it, in general. Not surprisingly, knowing some features of the unknown partition could help its identification, yielding an improvement of the performance of the method. Here we show that, if the number of clusters was known beforehand, standard methods, like modularity optimization, would considerably gain in accuracy, mitigating the severe resolution bias that undermines the reliability of the results of the original unconstrained version. The number of clusters can be inferred from the spectra of the recently introduced nonbacktracking and flow matrices, even in benchmark graphs with realistic community structure. The limit of such a two-step procedure is the overhead of the computation of the spectra.

Richard K. Darst; Zohar Nussinov; Santo Fortunato

2014-03-20T23:59:59.000Z

114

Development of improved performance refractory liner materials for slagging gasifiers  

SciTech Connect (OSTI)

Refractory liners for slagging gasifiers used in power generation, chemical production, or as a possible future source of hydrogen for a hydrogen based economy, suffer from a short service life. These liner materials are made of high Cr2O3 and lower levels of Al2O3 and/or ZrO2. As a working face lining in the gasifier, refractories are exposed to molten slags at elevated temperature that originate from ash in the carbon feedstock, including coal and/or petroleum coke. The molten slag causes refractory failure by corrosion dissolution and by spalling. The Albany Research Center is working to improve the performance of Cr2O3 refractories and to develop refractories without Cr2O3 or with Cr2O3 content under 30 wt pct. Research on high Cr2O3 materials has resulted in an improved refractory with phosphate additions that is undergoing field testing. Results to date of field trials, along with research direction on refractories with no or low Cr2O3, will be discussed.

Kwong, Kyei-Sing; Bennett, James P.; Powell, Cynthia; Thomas, Hugh; Krabbe, Rick

2005-01-01T23:59:59.000Z

115

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network [OSTI]

Roadmap to Improved Energy Efficiency iii 11-Sept-2009 ListA Roadmap to Improved Energy Efficiency 11-Sept-2009 Topic /A Roadmap to Improved Energy Efficiency 11-Sept-2009 Topic /

Singer, Brett C.

2010-01-01T23:59:59.000Z

116

Improving Indoor Environmental Quality and Energy Performance of Modular  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Indoor Environmental Quality and Energy Performance of Modular Indoor Environmental Quality and Energy Performance of Modular Classroom HVAC Systems Title Improving Indoor Environmental Quality and Energy Performance of Modular Classroom HVAC Systems Publication Type Conference Proceedings Year of Publication 2005 Authors Apte, Michael G., Michael Spears, Chi-Ming Lai, and Derek G. Shendell Conference Name Proceedings of Sustainable Buildings 2005 Conference Pagination 1432-1437 Conference Location Tokyo, Japan, September 27-29, 2005 Abstract The factory-built relocatable classroom (RC) is a dominant force in the school facility construction industry in the United States (U.S.) and elsewhere. It is estimated that there are approximately 650,000 RCs currently occupied in the U.S., housing about 16 million students. RCs receive public attention due to complaints about poor indoor environmental quality (IEQ). Both measured data and anecdotal evidence in California have suggested excessive acoustical noise from heating, ventilation, and air conditioning (HVAC) equipment as a central factor leading to degraded IEQ. In the U.S., RCs are typically equipped with unitary exterior wall-mount HVAC systems, and interior acoustical noise due to structural and airborne transmission can reach levels of about 58dB(A) with compressor cycling, under unoccupied conditions. Due to these noise levels teachers often simply choose to turn off the HVAC, leading to inadequate ventilation, as well as poor thermal conditioning, and thus to poor indoor air quality. Elevated levels of carbon dioxide and volatile organic compounds including formaldehyde are common. We discuss the acoustic component of our efforts to develop and test energy efficient HVAC systems that address the ventilation, controls, and acoustic requirements necessary to ensure high quality indoor environments in RCs

117

Improved LWR Cladding Performance by EPD Surface Modification Technique  

SciTech Connect (OSTI)

This project will utilize the electro-phoretic deposition technique (EPD) in conjunction with nanofluids to deposit oxide coatings on prototypic zirconium alloy cladding surfaces. After demonstrating that this surface modification is reproducible and robust, the team will subject the modified surface to boiling and corrosion tests to characterize the improved nucleate boiling behavior and superior corrosion performance. The scope of work consists of the following three tasks: The first task will employ the EPD surface modification technique to coat the surface of a prototypic set of zirconium alloy cladding tube materials (e.g. Zircaloy and advanced alloys such as M5) with a micron-thick layer of zirconium oxide nanoparticles. The team will characterize the modified surface for uniformity using optical microscopy and scanning-electron microscopy, and for robustness using standard hardness measurements. After zirconium alloy cladding samples have been prepared and characterized using the EPD technique, the team will begin a set of boiling experiments to measure the heat transfer coefficient and critical heat flux (CHF) limit for each prepared sample and its control sample. This work will provide a relative comparison of the heat transfer performance for each alloy and the surface modification technique employed. As the boiling heat transfer experiments begin, the team will also begin corrosion tests for these zirconium alloy samples using a water corrosion test loop that can mimic light water reactor (LWR) operational environments. They will perform extended corrosion tests on the surface-modified zirconium alloy samples and control samples to examine the robustness of the modified surface, as well as the effect on surface oxidation

Michael Corradini; Kumar Sridharan

2012-11-26T23:59:59.000Z

118

Furnace Blower Performance Improvements- Building America Top Innovation  

Broader source: Energy.gov [DOE]

This Top Innovation profile describes Building America research into improving efficiency of furnace fan blowers.

119

Metric Presentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MODERN GRID MODERN GRID S T R A T E G Y Smart Grid Metrics Monitoring our Progress Smart Grid Implementation Workshop Joe Miller - Modern Grid Team June 19, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability 2 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y Many are working on the Smart Grid FERC DOE-OE Grid 2030 GridWise Alliance EEI NERC (FM) DOE/NETL Modern Grid Strategy GridWise Program GridWorks NW GridWise Testbed GridApps CERTS DOE-OE CEC PIER NYSERDA CPUC AMI Galvin Initiative EPRI Intelligrid PSERC NIST GWAC Utility AMI Open AMI CEC PIER EPACT05 Nat'al Labs EISA-2007 IEEE DOE Smart Grid Task Force 3 Office of Electricity Delivery and Energy Reliability

120

Call for Papers The 2010 Performance Metrics for Intelligent Systems workshop will be the tenth in a series dedicated to  

E-Print Network [OSTI]

in a series dedicated to defining measures and methodologies of evaluating performance of intelligent systems systems for Hazardous Environments (e.g. nuclear remediation) - Smart Grid - Space Robotics - Medical. Started in 2000, the PerMIS series focuses on applications of performance measures to applied problems

Magee, Joseph W.

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

NERSC and HDF Group Optimize HDF5 Library to Improve I/O Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NERSC and HDF Group Optimize HDF5 Library to Improve IO Performance NERSC and HDF Group Optimize HDF5 Library to Improve IO Performance June 28, 2010 A common complaint among air...

122

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network [OSTI]

source heat pumps (newer designs are greatly improved), condensing boilers, advanced control sequences to allow utilization of variable air

Singer, Brett C.

2010-01-01T23:59:59.000Z

123

Shifting the Paradigm for Long Term Monitoring at Legacy Sites to Improve Performance while Reducing Cost  

SciTech Connect (OSTI)

A major issue facing many government and private industry sites that were previously contaminated with radioactive and chemical wastes is that often the sites cannot be cleaned up enough to permit unrestricted human access. These sites will require long-term management, in some cases indefinitely, leaving site owners with the challenge of protecting human health and environmental quality in a cost effective manner. Long-term monitoring of groundwater contamination is one of the largest projected costs in the life cycle of environmental management at the Savannah River Site (SRS), the larger DOE complex, and many large federal and private sites. Currently, most monitoring strategies are focused on laboratory measurements of contaminants measured in groundwater samples collected from wells. This approach is expensive, and provides limited and lagging information about the effectiveness of cleanup activities and the behavior of the residual contamination. Over the last twenty years, DOE and other federal agencies have made significant investments in the development of various types of sensors and strategies that would allow for remote analysis of contaminants in groundwater, but these approaches do not promise significant reductions in risk or cost. Scientists at SRS have developed a new paradigm to simultaneously improve the performance of long term monitoring systems while lowering the overall cost of monitoring. This alternative approach incorporates traditional point measurements of contaminant concentration with measurements of controlling variables including boundary conditions, master variables, and traditional plume/contaminant variables. Boundary conditions are the overall driving forces that control plume movement and therefore provide leading indication to changes in plume stability. These variables include metrics associated with meteorology, hydrology, hydrogeology, and land use. Master variables are the key variables that control the chemistry of the groundwater system, and include redox variables (ORP, DO, chemicals), pH, specific conductivity, biological community (breakdown/decay products), and temperature. A robust suite of relatively inexpensive tools is commercially available to measure these variables. Traditional plume/contaminant variables are various measures of contaminant concentration including traditional analysis of chemicals in groundwater samples. An innovative long term monitoring strategy has been developed for acidic or caustic groundwater plumes contaminated with metals and/or radionuclides. Not only should the proposed strategy be more effective at early identification of potential risks, this strategy should be significantly more cost effective because measurement of controlling boundary conditions and master variables is relatively simple. These variables also directly reflect the evolution of the plume through time, so that the monitoring strategy can be modified as the plume 'ages'. This transformational long-term monitoring paradigm will generate significant cost savings to DOE, other federal agencies and industry and will provide improved performance and leading indicators of environmental management performance.

Eddy-Dilek, Carol A.; Looney, Brian B.; Seaman, John; Kmetz, Thomas

2013-01-10T23:59:59.000Z

124

NEWTON's Metric System Resources  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Please select any link below. Search this page, using your web browser's search function. Please select any link below. Search this page, using your web browser's search function. Metric System References Do you have a great metric reference link? Please click our Ideas page. Featured Reference Links: Metric (SI) References Metric (SI) References Having trouble with the metric system? Visit the National Institute of Standards and Technology's site about the rules and style conventions of the International System of Units (SI). The Metric System The Metric System Need another reference? Try this site provided by Wikipedia that discusses the metric system and its history in depth. Metric Converter Metric Converter Need to convert to Metric? OnlineConversion.com allows you to convert just about anything to just about anything else. This will let you easily from metric to US Standard notation, and vice versa.

125

Kerr Metric Black Holes  

Science Journals Connector (OSTI)

... a = J/cM. Written in a form5 which reduces to the standard form of Schwarzschild metric when a = 0, the Kerr metric is

JAMES M. BARDEEN

1970-04-04T23:59:59.000Z

126

High Performance Healthcare Buildings: A Roadmap to Improved Energy  

E-Print Network [OSTI]

and benchmarking energy use; best practices and training; codes and standards; improved utilization of existing HVAC designs and technology; innovation in HVAC design and technology; electrical system design

127

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network [OSTI]

operation with energy efficiency in building systems. X X Xoperation with energy efficiency in building systems. 10.3.energy efficiency improvements in healthcare buildings. A

Singer, Brett C.

2010-01-01T23:59:59.000Z

128

Improving Pumping System Performance: A Sourcebook for Industry, Second Edition  

SciTech Connect (OSTI)

Prepared for the DOE Industrial Technologies Program, this sourcebook contains the practical guidelines and information manufacturers need to improve the efficiency of their pumping systems.

Not Available

2006-05-01T23:59:59.000Z

129

Smart Grid Projects Are Improving Performance and Helping Consumers...  

Energy Savers [EERE]

losses, peak demand, and customer bills by adjusting voltage levels along local power lines. Remotely accessible smart meters reduce operating costs, improve outage management...

130

Quality metrics for intranet applications  

Science Journals Connector (OSTI)

As the number of intranet application increases, software developers face a new software paradigm and possibly a new set of quality requirement. The work discussed here attempts to identify practical software metrics for intranet applications. The six software quality characteristics and 32 quality sub-characteristics of the Extended ISO model are used as a basis to identify the key quality characteristics of intranet applications. From the results of a user survey, three key quality characteristics are identified; they are reliability, functionality, and efficiency. Five sub-characteristics (availability, accuracy, security, suitability and time behaviour) are found to be the key attributes of intranet applications. Finally, a set of three metrics is developed. In order to verify their validity and applicability to intranet projects, an experiment was performed by computing these metrics in five intranet applications. The metric values were then compared with the results from a user satisfaction survey. The metric values and the survey results were closely correlated; a larger score in software metrics leads to a higher user satisfaction score. It is very likely that these software metrics can effectively reflect the quality of an intranet application.

Hareton K.N. Leung

2001-01-01T23:59:59.000Z

131

Resilience Metrics  

Energy Savers [EERE]

- CIRA will utilize existing ANL capabilities in areas such as: * High performance computing * Climate modeling * Energy systems modeling * Complex adaptive systems 2...

132

PROGRESS TOWARDS NEXT GENERATION, WAVEFORM BASED THREE-DIMENSIONAL MODELS AND METRICS TO IMPROVE NUCLEAR EXPLOSION MONITORING IN THE MIDDLE EAST  

SciTech Connect (OSTI)

Efforts to update current wave speed models of the Middle East require a thoroughly tested database of sources and recordings. Recordings of seismic waves traversing the region from Tibet to the Red Sea will be the principal metric in guiding improvements to the current wave speed model. Precise characterizations of the earthquakes, specifically depths and faulting mechanisms, are essential to avoid mapping source errors into the refined wave speed model. Errors associated with the source are manifested in amplitude and phase changes. Source depths and paths near nodal planes are particularly error prone as small changes may severely affect the resulting wavefield. Once sources are quantified, regions requiring refinement will be highlighted using adjoint tomography methods based on spectral element simulations [Komatitsch and Tromp (1999)]. An initial database of 250 regional Middle Eastern events from 1990-2007, was inverted for depth and focal mechanism using teleseismic arrivals [Kikuchi and Kanamori (1982)] and regional surface and body waves [Zhao and Helmberger (1994)]. From this initial database, we reinterpreted a large, well recorded subset of 201 events through a direct comparison between data and synthetics based upon a centroid moment tensor inversion [Liu et al. (2004)]. Evaluation was done using both a 1D reference model [Dziewonski and Anderson (1981)] at periods greater than 80 seconds and a 3D model [Kustowski et al. (2008)] at periods of 25 seconds and longer. The final source reinterpretations will be within the 3D model, as this is the initial starting point for the adjoint tomography. Transitioning from a 1D to 3D wave speed model shows dramatic improvements when comparisons are done at shorter periods, (25 s). Synthetics from the 1D model were created through mode summations while those from the 3D simulations were created using the spectral element method. To further assess errors in source depth and focal mechanism, comparisons between the three methods were made. These comparisons help to identify problematic stations and sources which may bias the final solution. Estimates of standard errors were generated for each event's source depth and focal mechanism to identify poorly constrained events. A final, well characterized set of sources and stations will be then used to iteratively improve the wave speed model of the Middle East. After a few iterations during the adjoint inversion process, the sources will be reexamined and relocated to further reduce mapping of source errors into structural features. Finally, efforts continue in developing the infrastructure required to 'quickly' generate event kernels at the n-th iteration and invert for a new, (n+1)-th, wave speed model of the Middle East. While development of the infrastructure proceeds, initial tests using a limited number of events shows the 3D model, while showing vast improvement compared to the 1D model, still requires substantial modifications. Employing our new, full source set and iterating the adjoint inversions at successively shorter periods will lead to significant changes and refined wave speed structures of the Middle East.

Savage, B; Peter, D; Covellone, B; Rodgers, A; Tromp, J

2009-07-02T23:59:59.000Z

133

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network [OSTI]

Efficiency 11-Sept-2009 9. Economic and Organizationaland Organizational Issues 9.1. Strategies to overcome structural challenges to energy efficiencyorganizational scheme to facilitate discussion of challenges to improving energy efficiency

Singer, Brett C.

2010-01-01T23:59:59.000Z

134

Improving Building Energy System Performance by Continuous Commissioning  

E-Print Network [OSTI]

data. The first buildings to undergo a continuous commissioning process were in the Texas LoanSTAR program [Liu, et al, 1994, Claridge, et al, 1994]. These buildings had been retrofitted with various energy efficiency improvements, and measured hourly...

Turner, W. D.; Liu, M.; Claridge, D. E.; Haberl, J. S.

1996-01-01T23:59:59.000Z

135

Improved performance of railcar/rail truck interface components  

E-Print Network [OSTI]

turning moments around curved track, wear of truck components, and increased detrimental dynamic effects. The recommended improvement of the rail truck interface is a set of two steel inserts, one concave and one convex, that can be retrofit to center...

Story, Brett Alan

2009-05-15T23:59:59.000Z

136

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

E-Print Network [OSTI]

Integrated design, incorporation of models from other advanced buildingsand building operators. Communication with users through integrated designintegrated design process has great potential to advance cost-effective reductions in energy intensity – often while improving building

Singer, Brett C.

2010-01-01T23:59:59.000Z

137

J.R. Simplot: Burner Upgrade Project Improves Performance and...  

Broader source: Energy.gov (indexed) [DOE]

Company saved energy and money by increasing the efficiency of the steam system in its potato processing plant in Caldwell, Idaho. J.R. Simplot: Burner Upgrade Project Improves...

138

Performance Predictions and Topology Improvements for Optical Serrodyne Comb Generators  

Science Journals Connector (OSTI)

Detailed simulations identify which optical components affect the performance of a radio frequency (RF) and optical comb generator based on an optical loop with a phase modulator. The...

Lowery, Arthur

2005-01-01T23:59:59.000Z

139

Analyzing and Improving MPI Communication Performance in Overcommitted Virtualized Systems  

Science Journals Connector (OSTI)

Nowadays, it is an important trend in the system domain to use the software-based virtualization technology to build the execution environments (e.g., Clouds) and serve high performance computing (HPC) applications. However, with the extra virtualization ... Keywords: virtualization, cloud, MPI, performance

Zhiyuan Shao; Qiang Wang; Xuejiao Xie; Hai Jin; Ligang He

2011-07-01T23:59:59.000Z

140

A New Approach in Urea Dosing to Improve Performance and Durability...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Approach in Urea Dosing to Improve Performance and Durability of SCR Systems for the Use in Off-Road Applications to Fulfill Tier 4 Final A New Approach in Urea Dosing to Improve...

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Performance Engineering: Understanding and Improving the Performance of Large-Scale Codes  

E-Print Network [OSTI]

Journal of High Performance Computing Applications, vol.component of the high-performance computing world. This isJournal of High Performance Computing Applications, vol.

2008-01-01T23:59:59.000Z

142

Improving Process Heating System Performance: A Sourcebook for Industry, Second Edition  

Broader source: Energy.gov [DOE]

This sourcebook describes basic process heating applications and equipment, and outlines opportunities for energy and performance improvements. It also discusses the merits of using a systems approach in identifying and implementing these improvement opportunities. It is not intended to be a comprehensive technical text on improving process heating systems, but serves to raise awareness of potential performance improvement opportunities, provides practical guidelines, and offers suggestions on where to find additional help.

143

Free Flow Power Partners to Improve Hydrokinetic Turbine Performance...  

Office of Environmental Management (EM)

as the device performed as expected, with no discernible harm to river-dwelling fish. Free Flow has also completed preliminary designs of utility-scale installations at a...

144

The Emergence of Trade Associations as Agents of Environmental Performance Improvement  

E-Print Network [OSTI]

This paper explores a surprising phenomenon: the emergence of trade associations as agents of environmental performance improvement. Trade associations in the United States have historically fought environmental regulation, ...

Nash, Jennifer

2002-08-26T23:59:59.000Z

145

Improvement of Electrocatalyst Performance in Hydrogen Fuel Cells by Multiscale Modelling.  

E-Print Network [OSTI]

??The work in this thesis addresses the improvement of electrocatalyst performance inhydrogen PEM fuel cells. An agglomerate model for a catalyst layer was coupled witha… (more)

Marthosa, Sutida

2012-01-01T23:59:59.000Z

146

High Performance Healthcare Buildings: A Roadmap to Improved Energy Efficiency  

SciTech Connect (OSTI)

This document presents a road map for improving the energy efficiency of hospitals and other healthcare facilities. The report compiles input from a broad array of experts in healthcare facility design and operations. The initial section lists challenges and barriers to efficiency improvements in healthcare. Opportunities are organized around the following ten themes: understanding and benchmarking energy use; best practices and training; codes and standards; improved utilization of existing HVAC designs and technology; innovation in HVAC design and technology; electrical system design; lighting; medical equipment and process loads; economic and organizational issues; and the design of next generation sustainable hospitals. Achieving energy efficiency will require a broad set of activities including research, development, deployment, demonstration, training, etc., organized around 48 specific objectives. Specific activities are prioritized in consideration of potential impact, likelihood of near- or mid-term feasibility and anticipated cost-effectiveness. This document is intended to be broad in consideration though not exhaustive. Opportunities and needs are identified and described with the goal of focusing efforts and resources.

Singer, Brett C.; Tschudi, William F.

2009-09-08T23:59:59.000Z

147

Improving Indoor Air Quality Improves the Performance of Office Work and School Work  

E-Print Network [OSTI]

-10-15a Proceedings of the Eighth International Conference for Enhanced Building Operations, Berlin, Germany, October 20-22, 2008 Definitions #0;? Performance: ability of an individual to perform different mentally and/or physically demanding tasks... Building Operations, Berlin, Germany, October 20-22, 2008 Performance vs productivity #0;? #0;? Effect on individual performance of reading: reduced by 10% Effect on overall productivity: reduced by only 5% if reading speed critical for 50...

Wargocki, P.

148

PerformanceMetricsFY13  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Pencil Beam") Pencil Beam") Experiment: E-211 CERN BBA Date: 3/11/2013 Time beam delivered (hours): 14.2 Time Promised (hours): 12 Unscheduled accelerator downtime (hours): 1.8 User off (hours): 0 Total Time (delivered+downtime+user off, hours): 16 Charge (electrons/bunch) S2 S10 S19 S20 SCAV Delivered: 1.02e10 1.06e10 1.05e10 8.5e9 9.5e9 Requested: 1e10 1e10 1e10 Not in request Not in request Normalized emittance (mm mrad) S2 (x,y) S4 (x,y) S11 (x,y) S18 (x,y) S20 (x,y) Delivered: 34, 2.7 25, 3.2 40, 6.4 42, 20 Requested: Not in request Not in request Not in request Not in request Not in request Bunch length delivered (rms, microns): 420 Bunch length requested (microns): Not in request

149

PerformanceMetricsFY14  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Over-compressed, High Charge") Over-compressed, High Charge") Experiment: E-201 DIELECTRIC WAKEFIELD ACCELERATION Date: 10/28/2013 Time beam delivered (hours): 2 Time Promised (hours): 2 Unscheduled accelerator downtime (hours): 0 User off (hours): 0 Total Time (delivered+downtime+user off, hours): 2 Charge (electrons/bunch) S2 S10 S19 S20 SCAV Delivered: 2.0e10 2.1e10 2.1e10 1.6e10 2.1e10 Requested: 2e10 2e10 2e10 2e10 Not in request Normalized emittance (mm mrad) S2 (x,y) S4 (x,y) S11 (x,y) S18 (x,y) S20 (x,y) Delivered: 40,2.3 34,2.1 54,4.8 67,8.4 Unmeasured Requested: Not in request Not in request Not in request Not in request Not in request Bunch length delivered (rms, microns): Unmeasured Bunch length requested (microns): Not in request

150

Efficient materialization of dynamic web data to improve web performance  

Science Journals Connector (OSTI)

The issues of performance, response efficiency and data consistency are among the most important ones for data intensive Web sites on the Internet today. In order to deal with these issues we analyze and evaluate a materialization policy that may be ...

Christos Bouras; Agisilaos Konidaris

2002-08-01T23:59:59.000Z

151

Improving cryogenic deuterium–tritium implosion performance on OMEGA  

SciTech Connect (OSTI)

A flexible direct-drive target platform is used to implode cryogenic deuterium–tritium (DT) capsules on the OMEGA laser [Boehly et al., Opt. Commun. 133, 495 (1997)]. The goal of these experiments is to demonstrate ignition hydrodynamically equivalent performance where the laser drive intensity, the implosion velocity, the fuel adiabat, and the in-flight aspect ratio (IFAR) are the same as those for a 1.5-MJ target [Goncharov et al., Phys. Rev. Lett. 104, 165001 (2010)] designed to ignite on the National Ignition Facility [Hogan et al., Nucl. Fusion 41, 567 (2001)]. The results from a series of 29 cryogenic DT implosions are presented. The implosions were designed to span a broad region of design space to study target performance as a function of shell stability (adiabat) and implosion velocity. Ablation-front perturbation growth appears to limit target performance at high implosion velocities. Target outer-surface defects associated with contaminant gases in the DT fuel are identified as the dominant perturbation source at the ablation surface; performance degradation is confirmed by 2D hydrodynamic simulations that include these defects. A trend in the value of the Lawson criterion [Betti et al., Phys. Plasmas 17, 058102 (2010)] for each of the implosions in adiabat–IFAR space suggests the existence of a stability boundary that leads to ablator mixing into the hot spot for the most ignition-equivalent designs.

Sangster, T. C.; Goncharov, V. N.; Betti, R.; Radha, P. B.; Boehly, T. R.; Collins, T. J. B.; Craxton, R. S.; Delettrez, J. A.; Edgell, D. H.; Epstein, R.; Forrest, C. J.; Froula, D. H.; Glebov, Y. Yu.; Harding, D. R.; Hohenberger, M.; Hu, S. X.; Igumenshchev, I. V.; Janezic, R.; Kelly, J. H.; Kessler, T. J. [Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623 (United States); and others

2013-05-15T23:59:59.000Z

152

Improvement in Plasma Performance with Lithium Coatings in NSTX  

SciTech Connect (OSTI)

Lithium as a plasma-facing material has attractive features, including a reduction in the recycling of hydrogenic species and the potential for withstanding high heat and neutron fluxes in fusion reactors. Dramatic effects on plasma performance with lithium-coated plasma-facing components (PFCOs) have been demonstrated on many fusion devices, including TFTR, [1] T-11M, [2] and FT-U. [3] Using a liquid-lithium-filled tray as a limiter, the CDX-U device achieved very significant enhancement in the confinement time of ohmically heated plasmas. [4] The recent NSTX experiments reported here have demonstrated, for the first time, significant and recurring benefits of lithium PFC coatings on divertor plasma performance in both L- and H- mode regimes heated by neutral beams.

Kaita, R; Ahn, J -W; Allain, J P; Bell, M G; Bell, R; Boedo, J; Bush, C; Mansfield, D; Menard, J; Mueller, D; Ono, M; Paul, S; Raman, R; Roquemore, A L; Ross, P W; Sabbagh, S; Schneider, H; Skinner, C H; Soukhanovskii, V; Stevenson, T; Stotler, D; Timberlake, J; Wampler, W R; Wilgen, J B

2008-09-12T23:59:59.000Z

153

Improvement in Plasma Performance with Lithium Coatings in NSTX  

SciTech Connect (OSTI)

Lithium as a plasma-facing material has attractive features, including a reduction in the recycling of hydrogenic species and the potential for withstanding high heat and neutron fluxes in fusion reactors. Dramatic effects on plasma performance with lithium-coated plasma-facing components (PFC's) have been demonstrated on many fusion devices, including TFTR, T-11M, and FT-U. Using a liquid-lithium-filled tray as a limiter, the CDX-U device achieved very significant enhancement in the confinement time of ohmically heated plasmas. The recent NSTX experiments reported here have demonstrated, for the first time, significant and recurring benefits of lithium PFC coatings on divertor plasma performance in both L- and H- mode regimes heated by neutral beams.

Kaita, R

2009-02-17T23:59:59.000Z

154

APPLICATION OF IT AND INTERNATIONAL STANDARDS TO IMPROVE BUILDING ENVELOPE PERFORMANCE  

E-Print Network [OSTI]

, Quebec, Canada ABSTRACT Improving thermal performance of building envelopes reduces energy consumption to be introduced to provide the required fresh air to the occupants. In other words, the energy performance must, thermal performance, indoor air quality, structural stability, acoustic performance, fire control, etc

Hammad, Amin

155

Lithium Surface Coatings for Improved Plasma Performance in NSTX  

SciTech Connect (OSTI)

NSTX high-power divertor plasma experiments have shown, for the first time, significant and frequent benefits from lithium coatings applied to plasma facing components. Lithium pellet injection on NSTX introduced lithium pellets with masses 1 to 5 mg via He discharges. Lithium coatings have also been applied with an oven that directed a collimated stream of lithium vapor toward the graphite tiles of the lower center stack and divertor. Lithium depositions from a few mg to 1 g have been applied between discharges. Benefits from the lithium coating were sometimes, but not always seen. These improvements sometimes included decreases plasma density, inductive flux consumption, and ELM frequency, and increases in electron temperature, ion temperature, energy confinement and periods of MHD quiescence. In addition, reductions in lower divertor D, C, and O luminosity were measured.

Kugel, H W; Ahn, J -W; Allain, J P; Bell, R; Boedo, J; Bush, C; Gates, D; Gray, T; Kaye, S; Kaita, R; LeBlanc, B; Maingi, R; Majeski, R; Mansfield, D; Menard, J; Mueller, D; Ono, M; Paul, S; Raman, R; Roquemore, A L; Ross, P W; Sabbagh, S; Schneider, H; Skinner, C H; Soukhanovskii, V; Stevenson, T; Timberlake, J; Wampler, W R

2008-02-19T23:59:59.000Z

156

Wave Motion 33 (2001) 225243 Boussinesq-type equations with improved nonlinear performance  

E-Print Network [OSTI]

Wave Motion 33 (2001) 225­243 Boussinesq-type equations with improved nonlinear performance Andrew In this paper, we derive and test a set of extended Boussinesq equations with improved nonlinear performance Elsevier Science B.V. All rights reserved. Keywords: Boussinesq equations; Water waves; Numerical methods

Kirby, James T.

157

Metrics for enterprise transformation  

E-Print Network [OSTI]

The objective of this thesis is to depict the role of metrics in the evolving journey of enterprise transformation. To this end, three propositions are explored: (i) metrics and measurement systems drive transformation, ...

Blackburn, Craig D. (Craig David), S. M. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

158

Development of an improved performance SiGe unicouple  

SciTech Connect (OSTI)

A two-step diffusion bonding process was developed such that the p-type material is bonded to the SiMo hot shoe first at 1594 K followed by the lower melting point n-type material between 1518 and 1520 K. Standard procedures were used to silicon nitride coat the thermoelectric pellets and to attach the cold side CTE transition and heat rejection components to produce unicouples. Two unicouples successfully withstood simulated rivet operations as would be experienced in the fabrication of a Radioisotope Thermoelectric Generator (RTG) converter to verify the integrity of the tungsten cold shoe to thermoelectric material interface. The performance of these unicouples will be further evaluated in an 18-couple test module. {copyright}American Institute of Physics 1995

Nakahara, J.F.; Franklin, B.; DeFillipo, L.E. [Martin Marietta Astro Space, PO Box 8555, Room 29B12, Philadelphia, Pennsylvania 19101-8555 (United States)

1995-01-20T23:59:59.000Z

159

Technetium and Iodine Getters to Improve Cast Stone Performance  

SciTech Connect (OSTI)

To determine the effectiveness of the various getter materials prior to their solidification in Cast Stone, a series of batch sorption experiments was performed at Pacific Northwest National Laboratory. To quantify the effectiveness of the removal of Tc(VII) and I(I) from solution by getters, the distribution coefficient, Kd (mL/g), was calculated. Testing involved placing getter material in contact with spiked waste solutions at a 1:100 solid-to-solution ratio for periods up to 45 days with periodic solution sampling. One Tc getter was also tested at a 1:10 solid-to-solution ratio. Two different solution media, 18.2 M? deionized water (DI H2O) and a 7.8 M Na LAW simulant, were used in the batch sorption tests. Each test was conducted at room temperature in an anoxic chamber containing N2 with a small amount of H2 (0.7%) to maintain anoxic conditions. Each getter-solution combination was run in duplicate. Three Tc- and I-doping concentrations were used separately in aliquots of both the 18.2 M? DI H2O and a 7.8 M Na LAW waste simulant. The 1× concentration was developed based on Hanford Tank Waste Operations Simulator (HTWOS) model runs to support the River Protection Project System Plan Revision 6. The other two concentrations were 5× and 10× of the HTWOS values. The Tc and I tests were run separately (i.e., the solutions did not contain both solutes). Sampling of the solid-solution mixtures occurred nominally after 0.2, 1, 3, 6, 9, 12, 15 days and ~35 to 45 days. Seven getter materials were tested for Tc and five materials were tested for I. The seven Tc getters were blast furnace slag 1 (BFS1) (northwest source), BFS2 (southeast source), Sn(II)-treated apatite, Sn(II) chloride, nano tin phosphate, KMS (a potassium-metal-sulfide), and tin hydroxapatite. The five iodine getters were layered bismuth hydroxide (LBH), argentite mineral, synthetic argentite, silver-treated carbon, and silver-treated zeolite. The Tc Kd values measured from experiments conducted using the 7.8 M Na LAW simulant (the simulant selected to represent LAW) for the first 15 days for four Tc getters (BFS1, BFS2, Sn(II)-treated apatite, and Sn(II) chloride) show no, to a very small, capacity to remove Tc from the LAW simulant. For the Tc-getter experiments in the 7.8 M LAW simulant, the majority of the effluent samples show very small drops in Tc concentrations for the 35-day compared to the 15-day samplings. However, the Tc concentration in the simulant blanks also dropped slightly during this period, so the effect of the getter contacting LAW simulant at 35 days compared to 15 days is minimal; except that the BFS1 1:10 test shows a slow but steady decrease in Tc concentration in the LAW simulant supernatant from the beginning to the 35 day contact at which point about 20% of the original Tc has been removed from solution. Lastly, the KMS getter gives the highest Kd value for Tc at 35 days where Kd values have increased to 104 mL/g. When considering the different I getters reacting with the 7.8 M LAW simulant, two getters are much more effective than the others: Ag zeolite and Syn Arg. The other getters have calculated iodide distribution coefficients that show very limited effectiveness in the caustic conditions created by the LAW simulant. These are preliminary results that will need more detailed analyses including both pre- and post-batch sorption getter solid-phase characterization using state-of-the-art instrumentation such as synchrotron X ray absorption spectroscopy, which can delineate the oxidation state of the Tc and likely iodine species as well as some of the getters key major components, sulfur and iron in the BFS, and tin and sulfur in the tin-bearing and sulfur-bearing getters. This report also describes future experimental studies to be performed to better elucidate the mechanisms controlling the Tc and I sequestration processes in the various getters and leach tests of getter-bearing Cast Stone monoliths.

Qafoku, Nikolla; Neeway, James J.; Lawter, Amanda R.; Levitskaia, Tatiana G.; Serne, R. Jeffrey; Westsik, Joseph H.; Snyder, Michelle MV

2014-07-01T23:59:59.000Z

160

ILC-TCP: An Interlayer Collaboration Protocol for TCP Performance Improvement in Mobile and Wireless  

E-Print Network [OSTI]

Internet has led to the optimization of network protocols to provide for a better performance. Most of the Internet traffic uses TCP, the de- facto transport layer protocol. Unfortunately, TCP performance degrades in the mobile and wireless environments. A good amount of research has been attempted to improve its performance

Helal, Abdelsalam

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Smart Grid Status and Metrics Report Appendices  

SciTech Connect (OSTI)

A smart grid uses digital power control and communication technology to improve the reliability, security, flexibility, and efficiency of the electric system, from large generation through the delivery systems to electricity consumers and a growing number of distributed generation and storage resources. To convey progress made in achieving the vision of a smart grid, this report uses a set of six characteristics derived from the National Energy Technology Laboratory Modern Grid Strategy. The Smart Grid Status and Metrics Report defines and examines 21 metrics that collectively provide insight into the grid’s capacity to embody these characteristics. This appendix presents papers covering each of the 21 metrics identified in Section 2.1 of the Smart Grid Status and Metrics Report. These metric papers were prepared in advance of the main body of the report and collectively form its informational backbone.

Balducci, Patrick J.; Antonopoulos, Chrissi A.; Clements, Samuel L.; Gorrissen, Willy J.; Kirkham, Harold; Ruiz, Kathleen A.; Smith, David L.; Weimar, Mark R.; Gardner, Chris; Varney, Jeff

2014-07-01T23:59:59.000Z

162

Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance  

SciTech Connect (OSTI)

This final report describes the progress during the six year of the project on ''Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance.'' This report is funded under the Department of Energy's (DOE's) Class I program which is targeted towards improving the reservoir performance of mature oil fields located in fluvially-dominated deltaic deposits. The project involves using an integrated approach to characterize the reservoir followed by drilling of horizontal injection wells to improve production performance. The project was divided into two budget periods. In the first budget period, many modern technologies were used to develop a detailed reservoir management plan; whereas, in the second budget period, conventional data was used to develop a reservoir management plan. The idea was to determine the cost effectiveness of various technologies in improving the performance of mature oil fields.

Kelkar, Mohan; Liner, Chris; Kerr, Dennis

1999-10-15T23:59:59.000Z

163

Using FEC Code for Improving the WDM/SCM - PON Performance  

Science Journals Connector (OSTI)

Using FEC Code for Improving the WDM/SCM - PON PerformanceDong-Min Seol, Seung-Hyun Jang, Chul-Soo Lee, Eui-Suk Jung, Byoung-Whi KimElectronics and Telecommunications Research...

Seol, Dong-Min; Lee, Chul-Soo; Jang, Seung-Hyun; Jung, Eui-Suk; Kim, Byoung-Whi

164

On improving performance and conserving power in cluster-based web servers  

E-Print Network [OSTI]

. Existing research separately addresses server performance and power conservation. The locality-aware request distribution (LARD) scheme improves the system response time by having the requests served by web servers which have the data in their cache...

Vageesan, Gopinath

2007-04-25T23:59:59.000Z

165

EASURING IMPROVEMENT IN THE ENERGY PERFORMANCE OF THE U.S. CORN REFINING INDUSTRY  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

| P | P a g e MEASURING IMPROVEMENT IN THE ENERGY PERFORMANCE OF THE U.S. CORN REFINING INDUSTRY SPONSORED BY THE U.S. ENVIRONMENTAL PROTECTION AGENCY AS PART OF THE ENERGY STAR® PROGRAM GALE A. BOYD AND CHRISTIAN DELGADO DUKE UNIVERSITY DEPARTMENT OF ECONOMICS BOX 90097, DURHAM, NC 27708 JULY 10, 2012 2 | P a g e MEASURING IMPROVEMENT IN THE ENERGY PERFORMANCE OF THE U.S. CORN REFINING INDUSTRY CONTENTS Figures .................................................................................................................................................................................................................. 3 Tables ................................................................................................................................................................................................................... 3

166

Improved  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Improved Improved cache performance in Monte Carlo transport calculations using energy banding A. Siegel a , K. Smith b , K. Felker c,∗ , P . Romano b , B. Forget b , P . Beckman c a Argonne National Laboratory, Theory and Computing Sciences and Nuclear Engineering Division b Massachusetts Institute of Technology, Department of Nuclear Science and Engineering c Argonne National Laboratory, Theory and Computing Sciences Abstract We present an energy banding algorithm for Monte Carlo (MC) neutral parti- cle transport simulations which depend on large cross section lookup tables. In MC codes, read-only cross section data tables are accessed frequently, ex- hibit poor locality, and are typically much too large to fit in fast memory. Thus, performance is often limited by long latencies to RAM, or by off-node communication latencies when the data footprint is very large and must be decomposed on

167

NREL study may provide future guidance in improving CdS/CdTe photovoltaic device performance.  

E-Print Network [OSTI]

NREL study may provide future guidance in improving CdS/CdTe photovoltaic device performance. The majority of minority carrier lifetime (MCL) studies performed on CdS/CdTe photovoltaic (PV) devices have Carrier Lifetime Measurements in Superstrate and Substrate CdTe PV Devices." Proc. 37th IEEE Photovoltaic

168

Endpoint-Based Routing Strategies for Improving Internet Performance and Resilience  

E-Print Network [OSTI]

to guarantee good end-to-end performance in the future Internet. We believe that the contributionsEndpoint-Based Routing Strategies for Improving Internet Performance and Resilience Aditya Akella, of any sponsoring institution, the U.S. government or any other entity. #12;Keywords: Internet routing

169

EndpointBased Routing Strategies for Improving Internet Performance and Resilience  

E-Print Network [OSTI]

to guarantee good end­to­end performance in the future Internet. We believe that the contributionsEndpoint­Based Routing Strategies for Improving Internet Performance and Resilience Aditya Akella, of any sponsoring institution, the U.S. government or any other entity. #12; Keywords: Internet routing

Akella, Aditya

170

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS  

E-Print Network [OSTI]

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS Eric FOCK Ile de La Réunion - FRANCE ABSTRACT This paper deals with neural networks modelling of HVAC systems of HVAC system can be modelled using manufacturer design data presented as derived performance maps

Boyer, Edmond

171

Microsoft Word - LL-White Paper Prac_Improve_Perform.doc  

Broader source: Energy.gov (indexed) [DOE]

LM/GJ1156-2006 LM/GJ1156-2006 ESL-RPT-2006-02 White Paper Sustainable Disposal Cell Covers: Legacy Management Practices, Improvements, and Long-Term Performance March 2006 Work Performed by S.M. Stoller Corporation under DOE Contract No. DE-AC01-02GJ79491 for the U.S. Department of Energy Office of Legacy Management, Grand Junction, Colorado U.S. Department of Energy Sustainable Disposal Cell Covers: LM Practices, Improvements, and Long-Term Performance March 2006 Doc. No. S0224000 Page iii Signature Page Sustainable Disposal Cell Covers: Legacy Management Practices, Improvements, and Long-Term Performance March 2006 Prepared By: ____________________________________________________ Jody Waugh

172

FY 2014 Metric Summary | Department of Energy  

Office of Environmental Management (EM)

4 Metric Summary FY 2014 Metric Summary FY 2014 Q1 Metric Summary.pdf FY 2014 Q2 Metric Summary.pdf FY 2014 Q3 Metric Summary.pdf More Documents & Publications FY 2014 Q3 Metric...

173

Industrial Decision Making- Improving Petroleum Refining Performance through Better Economic Performance Analysis  

E-Print Network [OSTI]

for Performance Making product from crude oil is a very much more complicated process than the foregoing simple example cited. One of the major complications results from the fact that when making salable product by converting crude oil, the results produce a... volumetric gain. That is, for every 100 barrels of crude oil processed, the outtum may be 110 or 115 equivalent barrels of products ( see figure 1). This looks too good to be true! The reason this anomaly occurs is that in the conversion of crude oil...

Mergens, E. H.

174

Integrated approach towards the application of horizontal wells to improve waterflooding performance. Annual report  

SciTech Connect (OSTI)

This annual report describes the progress during the second year of the project on Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance. This project is funded under the Department of Energy`s Class I program which is targeted towards improving the reservoir performance of mature oil fields located in fluvial-dominated deltaic deposits. The project involves an integrated approach to characterize the reservoir followed by the drilling of horizontal injection wells to improve production performance. The type of data we have integrated include cross bore hole seismic surveys, geological interpretation based on logs and cores, and engineering information. This report covers the second phase of the project which includes a detailed reservoir description of the field by integrating all the available information, followed by flow simulation of the Self Unit under various operating conditions. Based on an examination of the various operating parameters, we observed that the best possible solution to improve the Self Unit performance is to recomplete and stimulate most of the wells followed by an increase in the water injection rate. Drilling of horizontal injection well, although helpful in improving the performance, was not found to be economically feasible. The proposed reservoir management plan will be implemented shortly.

Kelkar, M.; Liner, C.; Kerr, D.

1995-05-01T23:59:59.000Z

175

Comments on the Request for Information on Improving Performance of Federal  

Broader source: Energy.gov (indexed) [DOE]

on the Request for Information on Improving Performance of on the Request for Information on Improving Performance of Federal Permitting and Review of Infrastructure Projects Comments on the Request for Information on Improving Performance of Federal Permitting and Review of Infrastructure Projects On August 29, 2013, the U.S. Department of Energy (DOE) published a Request for Information seeking information on a draft Integrated, Interagency Pre-Application (IIP) Process for significant onshore electric transmission projects requiring Federal authorizations. On September 25, the public comment period was extended to October 31, 2013. Comments received are available below. Comments from Lee Cunningham, sent September 23, 2013 Comments from Patrick Ledger of Arizona's G&T Cooperatives, sent September 25, 2013

176

Approach for the Improvement of Energy Performance of a Stock of Buildings  

E-Print Network [OSTI]

. - The tools must be accessible via the Intranet of the ministry in order to be easily and widely accessible. DEVELOPMENT OF TOOLS ADAPTED TO END-USER To analyze and improve the performance of the ministry of equipment stock of buildings we have.... - The tools must be accessible via the Intranet of the ministry in order to be easily and widely accessible. DEVELOPMENT OF TOOLS ADAPTED TO END-USER To analyze and improve the performance of the ministry of equipment stock of buildings we have...

Vaezi-Nejad, H.; Bouillon, J.; Crozier, L.; Guyot, G.

2003-01-01T23:59:59.000Z

177

Generalized utility metrics for supercomputers  

E-Print Network [OSTI]

2007:1–12 Generalized utility metrics for supercomputers 12.ISSUE PAPER Generalized utility metrics for supercomputersproblem of ranking the utility of supercom- puter systems

Strohmaier, Erich

2009-01-01T23:59:59.000Z

178

Appendix B Metric  

Gasoline and Diesel Fuel Update (EIA)

Metric Metric and Thermal Conversion Tables Metric Conversions Table B1 presents Summary Statistics for Natural Gas in the United States for 1992 through 1996 in metric units of measure. Volumes are shown in cubic meters instead of cubic feet. Prices are shown in dollars per thousand cubic meters instead of dollars per thousand cubic feet. The data in this table have been converted from the data that appear in Table 1 of this report. Thermal Conversions Table B2 presents the thermal (Btu) conversion factors and the converted data for natural gas supply and disposition from 1992 through 1996. A brief documentation for the thermal conversion factors follows: * Marketed Production. The conversion factor is calcu- lated by adding the total heat content of dry production to the total heat content of extraction loss and dividing the resulting sum by the total quantity of dry production and extraction

179

Quotients of Metric Spaces  

E-Print Network [OSTI]

the properties of quotient spaces of metric spaces. We will use "iff" as an abbreviation for "if and only if". If f is a function from X onto Y, we will write f: X --->> Y....

Herman, Robert A.

1968-01-01T23:59:59.000Z

180

Template-space metric for searches for gravitational waves from the inspiral, merger and ringdown of binary black holes  

E-Print Network [OSTI]

Searches for gravitational waves (GWs) from binary black holes using interferometric GW detectors require the construction of template banks for performing matched filtering while analyzing the data. Placement of templates over the parameter space of binaries, as well as coincidence tests of GW triggers from multiple detectors make use of the definition of a metric over the space of gravitational waveforms. Although recent searches have employed waveform templates coherently describing the inspiral, merger and ringdown (IMR) of the coalescence, the metric used in the template banks and coincidence tests was derived from post-Newtonian inspiral waveforms. In this paper, we compute the template-space metric of the IMR waveform family IMRPhenomB over the parameter space of masses and the effective spin parameter. We also propose a coordinate system, which is a modified version of post-Newtonian chirp time coordinates, in which the metric is slowly varying over the parameter space. The match function analytically computed using the metric has excellent agreement with the "exact" match function computed numerically. We show that the metric is able to provide a reasonable approximation to the match function of other IMR waveform families, such that the effective-one-body model calibrated to numerical relativity (EOBNRv2). The availability of this metric can contribute to improving the sensitivity of searches for GWs from binary black holes in the advanced detector era.

Chinmay Kalaghatgi; Parameswaran Ajith; K. G. Arun

2015-01-19T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Ramp Forecasting Performance from Improved Short-Term Wind Power Forecasting: Preprint  

SciTech Connect (OSTI)

The variable and uncertain nature of wind generation presents a new concern to power system operators. One of the biggest concerns associated with integrating a large amount of wind power into the grid is the ability to handle large ramps in wind power output. Large ramps can significantly influence system economics and reliability, on which power system operators place primary emphasis. The Wind Forecasting Improvement Project (WFIP) was performed to improve wind power forecasts and determine the value of these improvements to grid operators. This paper evaluates the performance of improved short-term wind power ramp forecasting. The study is performed for the Electric Reliability Council of Texas (ERCOT) by comparing the experimental WFIP forecast to the current short-term wind power forecast (STWPF). Four types of significant wind power ramps are employed in the study; these are based on the power change magnitude, direction, and duration. The swinging door algorithm is adopted to extract ramp events from actual and forecasted wind power time series. The results show that the experimental short-term wind power forecasts improve the accuracy of the wind power ramp forecasting, especially during the summer.

Zhang, J.; Florita, A.; Hodge, B. M.; Freedman, J.

2014-05-01T23:59:59.000Z

182

Improving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping  

E-Print Network [OSTI]

of increasing average energy and uses a shaping code to select signals from the lower energy sub- constellations more often than the signals from higher energy sub-constellations. Our previous work in [6] on shapingImproving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping Xingyu Xiang

Valenti, Matthew C.

183

USE OF VARIOUS DEVICE GEOMETRIES TO IMPROVE THE PERFORMANCE OF CdTe DETECTORS (*)  

E-Print Network [OSTI]

343 USE OF VARIOUS DEVICE GEOMETRIES TO IMPROVE THE PERFORMANCE OF CdTe DETECTORS (*) K. ZANIO. - The most direct method of increasing the resolution of CdTe gamma ray and x-ray detectors is to increase of Environmental and Biomedical Research. doped CdTe. Devices do not polarize as those having blocking contacts

Paris-Sud XI, Université de

184

Improving the Performance of On-Road Vehicle Detection by Combining Gabor and Wavelet  

E-Print Network [OSTI]

from gray-scale images. A first step of any vehicle detection system is hypothesizing the loca- tions1 Improving the Performance of On-Road Vehicle Detection by Combining Gabor and Wavelet Features to the problem of vehicle detection. These methods learn the characteristics of the vehicle class from a set

Bebis, George

185

Phase-change materials to improve solar panel's performance Pascal Biwole1,2,*  

E-Print Network [OSTI]

-change materials to improve solar panel's performance Pascal Biwole1,2,* , Pierre Eclache3 , Frederic Kuznik3 1-mail:phbiwole@unice.fr Abstract: High operating temperatures induce a loss of efficiency in solar photovoltaic and thermal panels set-up. Results show that adding a PCM on the back of a solar panel can maintain the panel

186

Improving Cooling performance of the mechanical resonator with the two-level-system defects  

E-Print Network [OSTI]

We study cooling performance of a realistic mechanical resonator containing defects. The normal cooling method through an optomechanical system does not work efficiently due to those defects. We show by employing periodical $\\sigma_z$ pulses, we can eliminate the interaction between defects and their surrounded heat baths up to the first order of time. Compared with the cooling performance of no $\\sigma_z$ pulses case, much better cooling results are obtained. Moreover, this pulse sequence has an ability to improve the cooling performance of the resonator with different defects energy gaps and different defects damping rates.

Tian Chen; Xiang-Bin Wang

2014-06-03T23:59:59.000Z

187

NERSC and HDF Group Optimize HDF5 Library to Improve I/O Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and HDF Group and HDF Group Optimize HDF5 Library to Improve I/O Performance NERSC and HDF Group Optimize HDF5 Library to Improve I/O Performance June 28, 2010 A common complaint among air travelers on short trips is that the time it takes to get in and out of the airplane and airports can be as long as the flight itself. In computer terms, that's a classic input/output (I/O) problem. Supercomputer users sometimes face a similar problem: the computer tears through the calculations with amazing speed, but the time it takes to write the resulting data to disk ends up slowing down the whole job. There are several layers of software that deal with I/O on high performance computing (HPC) systems. The filesystem software, such as Lustre or GPFS, is closest to the hardware and deals with the physical access and storage

188

Input/Output of ab-initio nuclear structure calculations for improved performance and portability  

SciTech Connect (OSTI)

Many modern scientific applications rely on highly computation intensive calculations. However, most applications do not concentrate as much on the role that input/output operations can play for improved performance and portability. Parallelizing input/output operations of large files can significantly improve the performance of parallel applications where sequential I/O is a bottleneck. A proper choice of I/O library also offers a scope for making input/output operations portable across different architectures. Thus, use of parallel I/O libraries for organizing I/O of large data files offers great scope in improving performance and portability of applications. In particular, sequential I/O has been identified as a bottleneck for the highly scalable MFDn (Many Fermion Dynamics for nuclear structure) code performing ab-initio nuclear structure calculations. We develop interfaces and parallel I/O procedures to use a well-known parallel I/O library in MFDn. As a result, we gain efficient I/O of large datasets along with their portability and ease of use in the down-stream processing. Even situations where the amount of data to be written is not huge, proper use of input/output operations can boost the performance of scientific applications. Application checkpointing offers enormous performance improvement and flexibility by doing a negligible amount of I/O to disk. Checkpointing saves and resumes application state in such a manner that in most cases the application is unaware that there has been an interruption to its execution. This helps in saving large amount of work that has been previously done and continue application execution. This small amount of I/O provides substantial time saving by offering restart/resume capability to applications. The need for checkpointing in optimization code NEWUOA has been identified and checkpoint/restart capability has been implemented in NEWUOA by using simple file I/O.

Laghave, Nikhil

2010-12-15T23:59:59.000Z

189

TCP HACK: TCP Header Checksum Option to Improve Performance over Lossy Links  

E-Print Network [OSTI]

In recent years, wireless networks have become increasingly common and an increasing number of devices are communicating with each other over lossy links. Unfortunately, TCP performs poorly over lossy links as it is unable to differentiate the loss due to packet corruption from that due to congestion. In this paper, we present an extension to TCP which enables TCP to distinguish packet corruption from congestion in lossy environments resulting in improved performance. We refer to this extension as the HeAder ChecKsum option (HACK). We implemented our algorithm in the Linux kernel and performed various tests to determine its effectiveness. Our results have shown that HACK performs substantially better than both SACK and NewReno in cases where burst corruptions are frequent. We also found that HACK can co-exist very nicely with SACK and performs even better with SACK enabled. Keywords -- Protocol Design, Protocol Analysis, Wireless Networks. I.

Rajesh Krishna Balan; Lee Boon Peng; K. Renjish Kumar; Lillykutty Jacob; Winston K. G. Seah; R. K. Balan; B. P. Lee; K. R. R. Kumar; L. Jacob; W. K. G. Seah; A. L. Ananda

2001-01-01T23:59:59.000Z

190

Remedial System Performance Improvement for the 200-ZP-1_PW-1 Operable Units at Hanford  

Broader source: Energy.gov (indexed) [DOE]

Hanford Operations Review Report: Feasibility Study Strategies and Remedial System Performance Improvement for the 200- ZP-1/PW-1 Operable Units at Hanford Prepared for Office of Groundwater and Soil Remediation Office of Environmental Management February 9, 2007 i EXECUTIVE SUMMARY At the request of the U.S. Department of Energy, Headquarters' Office of Environmental Management, the Office of Groundwater and Soil Remediation (EM-22), performed a Remediation System Evaluation (RSE) of the 200-ZP-1/PW-1 groundwater pump and treat (P&T) system, as well as the vadose zone Soil Vapor Extraction (SVE) system at the Hanford

191

DOE-HDBK-1028-2009; Human Performance Improvement Handbook, Volume 1  

Broader source: Energy.gov (indexed) [DOE]

028-2009 028-2009 June 2009 DOE STANDARD HUMAN PERFORMANCE IMPROVEMENT HANDBOOK VOLUME 1: CONCEPTS AND PRINCIPLES U.S. Department of Energy AREA HFAC Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE Available on the Department of Energy Technical Standards Program Web site at http://www.hss.energy.gov/nuclearsafety/ns/techstds/ DOE-HDBK-1028-2009 i VOLUME 1: CONCEPTS AND PRINCIPLES PREFACE ....................................................................................................................... v Reading The Handbook ............................................................................................... vi CHAPTER 1 - INTRODUCTION TO HUMAN PERFORMANCE..............1-1

192

Combined cooling, heating and power: A review of performance improvement and optimization  

Science Journals Connector (OSTI)

Abstract This paper presents a review on combined cooling, heating, and power (CCHP) systems. This work summarizes the methods used to perform energetic and exergetic analyses, system optimization, performance improvement studies, and development and analysis of CCHP systems, as reported in existing literature. In addition, this work highlights the most current research and emerging trends in CCHP technologies. It is envisioned that the information collected in this review paper will be a valuable source of information, for researchers, designers, and engineers, and provides direction and guidance for future research in CCHP technology.

Heejin Cho; Amanda D. Smith; Pedro Mago

2014-01-01T23:59:59.000Z

193

Cu-Pd Hydrogen Separation Membranes with Reduced Palladium Content and Improved Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cu-Pd Hydrogen Separation Membranes with Reduced Cu-Pd Hydrogen Separation Membranes with Reduced Palladium Content and Improved Performance Opportunity This patent-pending technology, "Cu-Pd Hydrogen Separation Membranes with Reduced Palladium Content and Improved Performance," consists of copper-palladium alloy compositions for hydrogen separation membranes that use less palladium and have a potential increase in hydrogen permeability and resistance to sulfur degradation compared to currently available copper-palladium membranes. This technology is available for licensing and/or further collaborative research with the U.S. Department of Energy's National Energy Technology Laboratory. Overview NETL is working to help produce and deliver hydrogen from fossil fuels including coal in commercially applicable and environmentally

194

Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance  

SciTech Connect (OSTI)

This report is funded under the Department of Energy's Class I program which is targeted towards improving the reservoir performance of mature oil fields located in fluvially dominated deltaic geological environments. The project involves using an integrated approach to characterize the reservoir followed by proposing an approach reservoir management strategy to improve the field performance. In the first stage of the project, the type of data integrated includes cross bore hole seismic surveys, geological interpretation based on the logs and the cores, and the engineering information. In contrast, during the second stage of the project, it was intended to use only conventional data to construct the reservoir description. This report covers the results of the implementation from the first state of the project. It also discusses the work accomplished so far to the second stage of the project . The production from the Shelf Unit (location of Stage I) has sustained a significant increase over more than three years.

Kelkar, M.; Kerr, D.

1999-04-17T23:59:59.000Z

195

Performance Improvements to the Neutron Imaging System at the National Ignition Facility  

SciTech Connect (OSTI)

A team headed by LANL and including many members from LLNL and NSTec LO and NSTec LAO fielded a neutron imaging system (NIS) at the National Ignition Facility at the start of 2011. The NIS consists of a pinhole array that is located 32.5 cm from the source and that creates an image of the source in a segmented scintillator 28 m from the source. The scintillator is viewed by two gated, optical imaging systems: one that is fiber coupled, and one that is lens coupled. While there are a number of other pieces to the system related to pinhole alignment, collimation, shielding and data acquisition, those pieces are discussed elsewhere and are not relevant here. The system is operational and has successfully obtained data on more that ten imaging shots. This remainder of this whitepaper is divided in five main sections. In Section II, we identify three critical areas of improvement that we believe should be pursued to improve the performance of the system for future experiments: spatial resolution, temporal response and signal-to-noise ratio. In Section III, we discuss technologies that could be used to improve these critical performance areas. In Section IV, we describe a path to evolve the current system to achieve improved performance with minimal impact on the ability of the system to operate on shots. In Section V, we discuss the abilities, scope and timescales of the current teams and the Commissariat energie atomique (CEA). In Section VI, we summarize and make specific recommendations for collaboration on improvements to the NIS.

Fittinghoff, D N; Bower, D E; Drury, O B; Dzenitis, J M; Hatarik, R; Merrill, F E; Grim, G P; Wilde, C H; Wilson, D C; Landoas, O; Caillaud, T; Bourgade, J; Buckles, R A; Lee, J; Weiss, P B

2011-09-26T23:59:59.000Z

196

Corporate Energy Management Strategies for GHG Reduction and Improved Business Performance  

E-Print Network [OSTI]

Corporate Energy Management Strategies for GHG Reduction & Improved Business Performance James E. Robinson, P.E., P.Eng., CEM, CEP Principal Project Engineer DES Global, LLC Greenville, South Carolina ABSTRACT Experience shows... level requires a lengthy project identi- fication, approval, implementation, and final per- formance evaluation cycle. Pending GHG regula- tions, energy cost, and business volatility have corpo- rations accelerating deployment this class of system...

Robinson, J. E.

197

Improving Steam System Performance: A Sourcebook for Industry, Second Edition (Book) (Revised)  

SciTech Connect (OSTI)

Improving Steam System Performance: A Sourcebook for Industry was developed for the U.S. Department of Energy's (DOE) Advanced Manufacturing Office (AMO), formerly the Industrial Technologies Program. AMO undertook this project as a series of sourcebook publications. Other topics in this series include: compressed air systems, pumping systems, fan systems, process heating and motor and drive systems. For more information about program resources, see AMO in the Where to Find Help section of this publication.

Not Available

2012-10-01T23:59:59.000Z

198

Building America Webinar: Retrofitting Central Space Conditioning Strategies for Multifamily Buildings- Control strategies to improve hydronic space heating performance  

Broader source: Energy.gov [DOE]

This webinar was presented on July 16, 2014, and provided information about improving the performance of central space conditioning systems in multifamily buildings.

199

Improved System Performance and Reduced Cost of a Fuel Reformer, LNT, and SCR Aftertreatment System Meeting Emissions Useful Life Requirement  

Broader source: Energy.gov [DOE]

An advanced exhaust aftertreatment system developed to meet EPA 2010 and final Tier 4 emission regulations show substantial improvements in system performance while reducing system cost

200

DOE-HDBK-1028-2009; Human Performance Improvement Handbook, Volume 2  

Broader source: Energy.gov (indexed) [DOE]

028-2009 028-2009 June 2009 DOE STANDARD HUMAN PERFORMANCE IMPROVEMENT HANDBOOK VOLUME 2: HUMAN PERFORMANCE TOOLS FOR INDIVIDUALS, WORK TEAMS, AND MANAGEMENT U.S. Department of Energy AREA HFAC Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE This document is available on the Department of Energy Technical Standards Program Website at http://www.hss.energy.gov/nuclearsafety/ns/techstds/ DOE-HDBK-1028-2009 Human Performance Tools i Foreword This good practice handbook provides a set of practical methods and techniques for anticipating, preventing, and catching active human errors; and, more importantly, identifying and mitigating latent errors attributable to organizational factors.

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

A key review on performance improvement aspects of geothermal district heating systems and applications  

Science Journals Connector (OSTI)

This paper deals with a comprehensive analysis and discussion of geothermal district heating systems and applications. In this regard, case studies are presented to study the thermodynamic aspects in terms of energy and exergy and performance improvement opportunities of three geothermal district heating systems, namely (i) Balcova geothermal district heating system (BGDHS), (ii) Salihli geothermal district heating system (SGDHS), and (iii) Gonen geothermal district heating system (GGDHS) installed in Turkey. Energy and exergy modeling of geothermal district heating systems for system analysis and performance evaluation are given, while their performances are evaluated using energy and exergy analysis method. Energy and exergy specifications are presented in tables. In the analysis, the actual system operational data are utilized. In comparison of the local three district heating systems with each other, it is found that the SGDHS has highest energy efficiency, while the GGDHS has highest exergy efficiency.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2007-01-01T23:59:59.000Z

202

Surface Treatments for Improved Performance of Spinel-coated AISI 441 Ferritic Stainless Steel  

SciTech Connect (OSTI)

Ferritic stainless steels are promising candidates for IT-SOFC interconnect applications due to their low cost and resistance to oxidation at SOFC operating temperatures. However, steel candidates face several challenges; including long term oxidation under interconnect exposure conditions, which can lead to increased electrical resistance, surface instability, and poisoning of cathodes due to volatilization of Cr. To potentially extend interconnect lifetime and improve performance, a variety of surface treatments were performed on AISI 441 ferritic stainless steel coupons prior to application of a protective spinel coating. The coated coupons were then subjected to oxidation testing at 800 and 850°C in air, and electrical testing at 800°C in air. While all of the surface-treatments resulted in improved surface stability (i.e., increased spallation resistance) compared to untreated AISI 441, the greatest degree of improvement (through 20,000 hours of testing at 800°C and 14,000 hours of testing at 850°C) was achieved by surface blasting.

Stevenson, Jeffry W.; Riel, Eric M.; Stephens, Elizabeth V.; Khaleel, Mohammad A.

2013-01-01T23:59:59.000Z

203

Resilient Control Systems Practical Metrics Basis for Defining Mission Impact  

SciTech Connect (OSTI)

"Resilience” describes how systems operate at an acceptable level of normalcy despite disturbances or threats. In this paper we first consider the cognitive, cyber-physical interdependencies inherent in critical infrastructure systems and how resilience differs from reliability to mitigate these risks. Terminology and metrics basis are provided to integrate the cognitive, cyber-physical aspects that should be considered when defining solutions for resilience. A practical approach is taken to roll this metrics basis up to system integrity and business case metrics that establish “proper operation” and “impact.” A notional chemical processing plant is the use case for demonstrating how the system integrity metrics can be applied to establish performance, and

Craig G. Rieger

2014-08-01T23:59:59.000Z

204

Modular Approach for Continuous Cell-Level Balancing to Improve Performance of Large Battery Packs: Preprint  

SciTech Connect (OSTI)

Energy storage systems require battery cell balancing circuits to avoid divergence of cell state of charge (SOC). A modular approach based on distributed continuous cell-level control is presented that extends the balancing function to higher level pack performance objectives such as improving power capability and increasing pack lifetime. This is achieved by adding DC-DC converters in parallel with cells and using state estimation and control to autonomously bias individual cell SOC and SOC range, forcing healthier cells to be cycled deeper than weaker cells. The result is a pack with improved degradation characteristics and extended lifetime. The modular architecture and control concepts are developed and hardware results are demonstrated for a 91.2-Wh battery pack consisting of four series Li-ion battery cells and four dual active bridge (DAB) bypass DC-DC converters.

Muneed ur Rehman, M.; Evzelman, M.; Hathaway, K.; Zane, R.; Plett, G. L.; Smith, K.; Wood, E.; Maksimovic, D.

2014-10-01T23:59:59.000Z

205

Performance improvement study of a relativistic magnetron using MAGIC-3D  

SciTech Connect (OSTI)

A three dimensional particle-in-cell (PlC) code, MAGIC3D, is used to examine the performance improvement in a relativistic magnetron by perturbing technique. Asymmetrical metal rods of different length have been used to perturb the magnetic field in the annular sector of the resonant system. Enhancement up to 45% in the radiated output power has been obtained in the perturbed magnetic field case over the unperturbed one. It has also been found in the simulation that oscillation start up time is reduced by 16 %, and the amplitude of the nearest competing mode goes down 9dB compared to unperturbed case. Perturbed magnetic field also reduces the end caps current improving the efficiency. (author)

Maurya, S.; Singh, V.V.P., E-mail: smaurya@ceeri.ernet.in [Central Electronics Engineering Research Institute, Council of Scientific and Industrial Research, Pilani (India); Jain, P.K. [Center of Research in Microwave Tubes, Institute of Technology, Banaras Hindu University, Varanasi (India)

2011-07-01T23:59:59.000Z

206

Clean Cities 2010 Annual Metrics Report  

SciTech Connect (OSTI)

This report details the petroleum savings and vehicle emissions reductions achieved by the U.S. Department of Energy's Clean Cities program in 2010. The report also details other performance metrics, including the number of stakeholders in Clean Cities coalitions, outreach activities by coalitions and national laboratories, and alternative fuel vehicles deployed.

Johnson, C.

2012-10-01T23:59:59.000Z

207

Clean Cities 2011 Annual Metrics Report  

SciTech Connect (OSTI)

This report details the petroleum savings and vehicle emissions reductions achieved by the U.S. Department of Energy's Clean Cities program in 2011. The report also details other performance metrics, including the number of stakeholders in Clean Cities coalitions, outreach activities by coalitions and national laboratories, and alternative fuel vehicles deployed.

Johnson, C.

2012-12-01T23:59:59.000Z

208

Improving the performance of the actinic inspection tool with an optimized alignment procedure  

SciTech Connect (OSTI)

Extreme ultraviolet (EUV) microscopy is an important tool for the investigation of the performance of EUV masks, for detecting the presence and the characteristics of defects, and for evaluating the effectiveness of defect repair techniques. Aerial image measurement bypasses the difficulties inherent to photoresist imaging and enables high data collection speed and flexibility. It provides reliable and quick feedback for the development of masks and lithography system modeling methods. We operate the SEMATECH Berkeley Actinic Inspection Tool (AIT), a EUV microscope installed at the Advanced Light Source at Lawrence Berkeley National Laboratory. The AIT is equipped with several high-magnification Fresnel zoneplate lenses, with various numerical aperture values, that enable it image the reflective mask surface with various resolution and magnification settings. Although the AIT has undergone significant recent improvements in terms of imaging resolution and illumination uniformity, there is still room for improvement. In the AIT, an off-axis zoneplate lens collects the light coming from the sample and an image of the sample is projected onto an EUV-sensitive CCD camera. The simplicity of the optical system is particularly helpful considering that the AIT alignment has to be performed every time that a sample or a zoneplate is replaced. The alignment is sensitive to several parameters such as the lens position and orientation, the illumination direction and the sample characteristics. Since the AIT works in high vacuum, there is no direct access to the optics or to the sample during the alignment and the measurements. For all these reasons the alignment procedures and feedback can be complex, and in some cases can reduce the overall data throughput of the system. In this paper we review the main strategies and procedures that have been developed for quick and reliable alignments, and we describe the performance improvements we have achieved, in terms of aberration magnitude reduction.

Mochi, I.; Goldberg, K.A.; Naulleau, P.; Huh, Sungmin

2009-03-04T23:59:59.000Z

209

Gas cofiring in coal-fired stokers for emissions reduction and performance improvement  

SciTech Connect (OSTI)

Adding gas burners above the grate of a coal-fired stoker can be an economical method of reducing gaseous and particulate emissions and improving efficiency and operational flexibility. With this cofiring configuration, the improved heat distribution and mixing with the stoker combustion products can give reduced opacity, reduced emissions of particulate, NO{sub x} and SO{sub 2}, improved carbon burnout and lower overall ash, reduced excess air, faster load response, cleaner and quicker lightoffs, improved turndown at both lower and upper capacity limits, and improved performance with problematic coals. To develop and validate the cofiring technology, three cofire field experiments have been conducted. A 165,000 lb/hr spreader stoker and mass feed chain grate stokers rated at 40,000 and 75,000 lb/hr have been retrofit with gas burners and tested in the field. The two larger units used dual, opposed burners, while the smaller unit was retrofit with a single burner. With the spreader stoker, the primary benefits of gas cofire was reduction in opacity episodes with coal quality variability and recovery of lost derate. With the larger chain grate unit, the primary benefit was reduction of NO{sub x} and SO{sub 2} to within Title V limits and elimination of opacity episodes during startup and load swings. With the smaller chain grate, the primary benefit was ability to operate at low loads without unacceptable opacity excursions which had previously required a backup boiler. In all cases, the economics justified the capital burner system retrofit cost and incremental fuel costs.

Mason, H.B.; Drennan, S.; Chan, I.; Kinney, W.L.; Borland, D.

1996-12-31T23:59:59.000Z

210

Improved Strategies for Enhanced Business Performance in Cloud based IT Industries  

E-Print Network [OSTI]

Emergence of sophisticated technologies in IT industries has posed several challenges such as production of products using advanced technical process for instance Result Orientation Approach, Deployment, Assessment and Refinement (RADAR) in a dynamic and competitive environment. The key challenge for any engineer is therefore to develop process and products which ultimately lead towards total customer satisfaction. Recent development in technology has driven most of the IT industries to operate in the cloud environment due to reduced infrastructure investment and maintenance overheads. However, existing process in cloud lacks efficient multiple service paradigms that can provide improved business gain. Thus, it is the responsibility of every engineer to contribute towards effective and efficient techniques and models that can enhance the business performance. The position of this paper is to present several major issues prevailing in the IT industries such as delay time, response time, performance etc., which...

Nair, T R Gopalakrishnan; Suma, V

2012-01-01T23:59:59.000Z

211

Metric adjusted skew information  

E-Print Network [OSTI]

We extend the concept of Wigner-Yanase-Dyson skew information to something we call ``metric adjusted skew information'' (of a state with respect to a conserved observable). This ``skew information'' is intended to be a non-negative quantity bounded by the variance (of an observable in a state) that vanishes for observables commuting with the state. We show that the skew information is a convex function on the manifold of states. It also satisfies other requirements, proposed by Wigner and Yanase, for an effective measure-of-information content of a state relative to a conserved observable. We establish a connection between the geometrical formulation of quantum statistics as proposed by Chentsov and Morozova and measures of quantum information as introduced by Wigner and Yanase and extended in this article. We show that the set of normalized Morozova-Chentsov functions describing the possible quantum statistics is a Bauer simplex and determine its extreme points. We determine a particularly simple skew information, the ``lambda-skew information,'' parametrized by a lambda in (0,1], and show that the convex cone this family generates coincides with the set of all metric adjusted skew informations. Key words: Skew information, convexity, monotone metric, Morozova-Chentsov function, lambda-skew information.

Frank Hansen

2006-07-23T23:59:59.000Z

212

A linear MOSFET regulator for improving performance of the booster ramping power supplies at the APS.  

SciTech Connect (OSTI)

The APS booster ring uses ramping power supplies to power the sextupole, quadrupole, and dipole magnets as the beam energy ramps up linearly to 7 GeV. Due to the circuit topology used, those supplies are unable to follow the linear ramp to the desired accuracy. The best regulation achieved is 0.25% while 0.1% is desired. In addition to the unsatisfying regulation, those supplies are sensitive to AC line perturbation and are not able to reject AC line noises of more than a few tens of hertz. To improve the performance, a linear MOSFET regulation system using paralleled MOSFET devices in series with the power supply is proposed. The system uses a realtime current feedback loop to force the MOSFETs to work in the linear operation mode. By using this linear MOSFET regulator, the voltage drop on MOSFETs, and hence the voltage imposed on magnets, can be regulated very quickly. As a result, the regulation of the magnet current can be improved significantly. So far the simulation results show that with the linear regulator, the current regulation can be improved to better than 0.1%. Because of the high bandwidth of the linear regulator, it can reduce the harmonic content in the output current as well as reject the AC line disturbance. This paper discusses the circuit topology, the regulation method, and the simulation results.

Feng, G.; Deriy, B.; Wang, J.; Accelerator Systems Division (APS)

2008-01-01T23:59:59.000Z

213

Improving thermosyphon solar domestic hot water system model performance. Final report, March 1994--February 1995  

SciTech Connect (OSTI)

Data from an indoor solar simulator experimental performance test is used to develop a systematic calibration procedure for a computer model of a thermosyphoning, solar domestic hot water heating system with a tank-in-tank heat exchanger. Calibration is performed using an indoor test with a simulated solar collector to adjust heat transfer in the heat exchanger and heat transfer between adjacent layers of water in the storage tank. An outdoor test is used to calibrate the calculation of the friction drop in the closed collector loop. Additional indoor data with forced flow in the annulus of the heat exchanger leads to improved heat transfer correlations for the inside and outside regions of the tank-in-tank heat exchanger. The calibrated simulation model is compared to several additional outdoor tests both with and without auxiliary heating. Integrated draw energies are predicted with greater accuracy and draw temperature profiles match experimental results to a better degree. Auxiliary energy input predictions improve significantly. 63 figs., 29 tabs.

Swift, T.N.

1996-09-01T23:59:59.000Z

214

Feed-pump hydraulic performance and design improvement, Phase I: research program design. Final report  

SciTech Connect (OSTI)

As a result of prior EPRI-sponsored studies, it was concluded that a research program should be designed and implemented to provide an improved basis for the design, procurement, testing, and operation of large feed pumps with increased reliability and stability over the full range of operating conditions. This two-volume report contains a research plan which is based on a review of the present state of the art and which defines the necessary R and D program and estimates the benefits and costs of the program. The recommended research program consists of 30 interrelated tasks. It is designed to perform the needed research; to verify the results; to develop improved components; and to publish computer-aided design methods, pump specification guidelines, and a troubleshooting manual. Most of the technology proposed in the research plan is applicable to nuclear power plants as well as to fossil-fired plants. This volume discusses the design, performance and failures of feed pumps, and recommendations for research on pump dynamics, design, and specifications.

Brown, W.H.; Gopalakrishnan, S.; Fehlau, R.; Thompson, W.E.; Wilson, D.G.

1982-03-01T23:59:59.000Z

215

Thermal Processing Techniques to Improve Metal Sulfide Mixed Alcohol Catalyst Performance  

SciTech Connect (OSTI)

Research over several decades by several institutions has shown that alkali-promoted metal sulfide catalysts are capable of producing mixed alcohols from syngas with high selectivity and yield. Unfortunately, process models suggest that syngas to mixed alcohol processes, and especially thermochemical biomass to mixed alcohol processes, require improvements to sulfide catalyst activity and/or selectivity for acceptable economics. These improvements, if incremental, cannot result in increased process complexity, capital expenditure, or catalyst costs. It is well accepted among catalyst researchers that thermal processing techniques like calcining and reduction can have profound effects on the properties and performance of finished catalysts, and that small variations in thermal processing do not usually affect the overall cost of the catalyst. Metal sulfide catalysts are no exception but surprisingly, little attention has been given to the effects of thermal treatment on bulk metal sulfide mixed alcohol catalysts. This presentation will discuss how parameters like temperature, dwell time, metal ratios, and purge gas affect the performance and physical properties of K-Co/Mo catalysts.

Hensley, J.; Menart, M.; Costelow, K.; Thibodeaux, J.; Yung, M.

2011-01-01T23:59:59.000Z

216

Sulfur nanocrystals anchored graphene composite with highly improved electrochemical performance for lithium–sulfur batteries  

Science Journals Connector (OSTI)

Abstract Two kinds of graphene–sulfur composites with 50 wt% of sulfur are prepared using hydrothermal method and thermal mixing, respectively. Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray Spectra mapping show that sulfur nanocrystals with size of ?5 nm dispersed on graphene sheets homogeneously for the sample prepared by hydrothermal method (NanoS@G). While for the thermal mixed graphene–sulfur composite (S–G mixture), sulfur shows larger and uneven size (50–200 nm). X-ray Photoelectron Spectra (XPS) reveals the strong chemical bonding between the sulfur nanocrystals and graphene. Comparing with the S–G mixture, the NanoS@G composite shows highly improved electrochemical performance as cathode for lithium–sulfur (Li–S) battery. The NanoS@G composite delivers an initial capacity of 1400 mAh g?1 with the sulfur utilization of 83.7% at a current density of 335 mA g?1. The capacity keeps above 720 mAh g?1 over 100 cycles. The strong adherence of the sulfur nanocrystals on graphene immobilizes sulfur and polysulfides species and suppressed the “shuttle effect”, resulting higher coulombic efficiency and better capacity retention. Electrochemical impedance also suggests that the strong bonding enabled rapid electronic/ionic transport and improved electrochemical kinetics, therefore good rate capability is obtained. These results demonstrate that the NanoS@G composite is a very promising candidate for high-performance Li–S batteries.

Jun Zhang; Zimin Dong; Xiuli Wang; Xuyang Zhao; Jiangping Tu; Qingmei Su; Gaohui Du

2014-01-01T23:59:59.000Z

217

Improving the dynamic performance of a complex AC/DC system by HVDC control modifications  

SciTech Connect (OSTI)

The power system of Hydro-Quebec has a peak load of approximately 27 GW. The great distance between the production sites and the load centers introduces stability limitations, which is the reason why the Quebec grid cannot be economically synchronized (through ac transmission with limited capacity) with the U.S. northeastern network. Power exports are therefore dependent on the use of HVDC links of which Hydro-Quebec now possesses five, for a capacity of over 2600 MW. Such a capacity will again soon increase. At the moment, the Chateauguay scheme has the largest HVDC capacity. It transfers 1000 MW by means of two Back-to-Back converter blocks. Various automatic control systems are installed on the Chateauguay scheme owing to the fact that a single circuit of a 765 kV ac line transmits the output of both the HVDC converter stations as well as the output from Beauharnois hydro generating station. Such controls have performed satisfactorily since 1984. However, a remarkable improvement of the overall ac/dc system dynamic performance can be gained by making certain modifications in some of these HVDC system controls. This paper presents the salient features of such control modifications, currently under consideration, using the results of an investigation by digital and analogue simulations that demonstrate the achieved improvements.

Hammad, A.E. (ABB Power Systems, Baden (CH)); Gagnon, J. (Hydro Quebec, Montreal (CA)); McCallum, D. (IREQ, Montreal (CA))

1990-10-01T23:59:59.000Z

218

Improved photovoltaic performances by post-deposition acidic treatments on tetrapod shaped colloidal nanocrystal solids  

Science Journals Connector (OSTI)

The ligand exchange reaction with pyridine is the standard procedure for the integration of colloidal semiconductor nanocrystals (NCs) in photovoltaic devices; however, for large sized and irregularly shaped branched NCs, such as CdSe@CdTe tetrapods, this procedure can lead to a considerable waste of materials and the aggregation of NCs in the colloidal solution, therefore resulting in the formation of an inhomogeneous film and low device performances. Here, we report on alternative post-deposition treatments with carboxylic acids on films of CdSe@CdTe tetrapod shaped NCs. This approach guarantees the removal of the insulating surfactant, necessary to obtain good charge transport among NCs, while preserving the film integrity. We perform a complete characterization of the nanocrystalline films treated with different carboxylic acids and demonstrate the successful integration of such films in photovoltaic devices, showing a doubled efficiency with respect to the standard ligand exchange procedure. Our approach represents a general route towards the development of NC based devices with improved performances and minimized waste of material.

Rosanna Mastria; Aurora Rizzo; Concetta Nobile; Susmit Kumar; Giuseppe Maruccio; Giuseppe Gigli

2012-01-01T23:59:59.000Z

219

The Pointing System of the Herschel Space Observatory. Description, Calibration, Performance and Improvements  

E-Print Network [OSTI]

We present the activities carried out to calibrate and characterise the performance of the elements of attitude control and measurement on board the Herschel spacecraft. The main calibration parameters and the evolution of the indicators of the pointing performance are described, from the initial values derived from the observations carried out in the performance verification phase to those attained in the last year and half of mission, an absolute pointing error around or even below 1 arcsec, a spatial relative pointing error of some 1 arcsec and a pointing stability below 0.2 arsec. The actions carried out at the ground segment to improve the spacecraft pointing measurements are outlined. On-going and future developments towards a final refinement of the Herschel astrometry are also summarised. A brief description of the different components of the attitude control and measurement system (both in the space and in the ground segments) is also given for reference. We stress the importance of the cooperation b...

Sánchez-Portal, Miguel; Altieri, Bruno; Aussel, Hervé; Feuchtgruber, Helmut; Klaas, Ulrich; Linz, Hendrik; Lutz, Dieter; Merín, Bruno; Müller, Thomas; Nielbock, Markus; Oort, Marc; Pilbratt, Göran; Schmidt, Micha; Stephenson, Craig; Tuttlebee, Mark

2014-01-01T23:59:59.000Z

220

Systems Study for Improving Gas Turbine Performance for Coal/IGCC Application  

SciTech Connect (OSTI)

This study identifies vital gas turbine (GT) parameters and quantifies their influence in meeting the DOE Turbine Program overall Integrated Gasification Combined Cycle (IGCC) plant goals of 50% net HHV efficiency, $1000/kW capital cost, and low emissions. The project analytically evaluates GE advanced F class air cooled technology level gas turbine conceptual cycle designs and determines their influence on IGCC plant level performance including impact of Carbon capture. This report summarizes the work accomplished in each of the following six Tasks. Task 1.0--Overall IGCC Plant Level Requirements Identification: Plant level requirements were identified, and compared with DOE's IGCC Goal of achieving 50% Net HHV Efficiency and $1000/KW by the Year 2008, through use of a Six Sigma Quality Functional Deployment (QFD) Tool. This analysis resulted in 7 GT System Level Parameters as the most significant. Task 2.0--Requirements Prioritization/Flow-Down to GT Subsystem Level: GT requirements were identified, analyzed and prioritized relative to achieving plant level goals, and compared with the flow down of power island goals through use of a Six Sigma QFD Tool. This analysis resulted in 11 GT Cycle Design Parameters being selected as the most significant. Task 3.0--IGCC Conceptual System Analysis: A Baseline IGCC Plant configuration was chosen, and an IGCC simulation analysis model was constructed, validated against published performance data and then optimized by including air extraction heat recovery and GE steam turbine model. Baseline IGCC based on GE 207FA+e gas turbine combined cycle has net HHV efficiency of 40.5% and net output nominally of 526 Megawatts at NOx emission level of 15 ppmvd{at}15% corrected O2. 18 advanced F technology GT cycle design options were developed to provide performance targets with increased output and/or efficiency with low NOx emissions. Task 4.0--Gas Turbine Cycle Options vs. Requirements Evaluation: Influence coefficients on 4 key IGCC plant level parameters (IGCC Net Efficiency, IGCC Net Output, GT Output, NOx Emissions) of 11 GT identified cycle parameters were determined. Results indicate that IGCC net efficiency HHV gains up to 2.8 pts (40.5% to 43.3%) and IGCC net output gains up to 35% are possible due to improvements in GT technology alone with single digit NOx emission levels. Task 5.0--Recommendations for GT Technical Improvements: A trade off analysis was conducted utilizing the performance results of 18 gas turbine (GT) conceptual designs, and three most promising GT candidates are recommended. A roadmap for turbine technology development is proposed for future coal based IGCC power plants. Task 6.0--Determine Carbon Capture Impact on IGCC Plant Level Performance: A gas turbine performance model for high Hydrogen fuel gas turbine was created and integrated to an IGCC system performance model, which also included newly created models for moisturized syngas, gas shift and CO2 removal subsystems. This performance model was analyzed for two gas turbine technology based subsystems each with two Carbon removal design options of 85% and 88% respectively. The results show larger IGCC performance penalty for gas turbine designs with higher firing temperature and higher Carbon removal.

Ashok K. Anand

2005-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Degenerate Metric Phase Boundaries  

E-Print Network [OSTI]

The structure of boundaries between degenerate and nondegenerate solutions of Ashtekar's canonical reformulation of Einstein's equations is studied. Several examples are given of such "phase boundaries" in which the metric is degenerate on one side of a null hypersurface and non-degenerate on the other side. These include portions of flat space, Schwarzschild, and plane wave solutions joined to degenerate regions. In the last case, the wave collides with a planar phase boundary and continues on with the same curvature but degenerate triad, while the phase boundary continues in the opposite direction. We conjecture that degenerate phase boundaries are always null.

Ingemar Bengtsson; Ted Jacobson

1999-01-23T23:59:59.000Z

222

Pulsed laser deposition of Mn doped CdSe quantum dots for improved solar cell performance  

SciTech Connect (OSTI)

In this work, we demonstrate (1) a facile method to prepare Mn doped CdSe quantum dots (QDs) on Zn{sub 2}SnO{sub 4} photoanodes by pulsed laser deposition and (2) improved device performance of quantum dot sensitized solar cells of the Mn doped QDs (CdSe:Mn) compared to the undoped QDs (CdSe). The band diagram of photoanode Zn{sub 2}SnO{sub 4} and sensitizer CdSe:Mn QD is proposed based on the incident-photon-to-electron conversion efficiency (IPCE) data. Mn-modified band structure leads to absorption at longer wavelengths than the undoped CdSe QDs, which is due to the exchange splitting of the CdSe:Mn conduction band by the Mn dopant. Three-fold increase in the IPCE efficiency has also been observed for the Mn doped samples.

Dai, Qilin; Wang, Wenyong, E-mail: wwang5@uwyo.edu, E-mail: jtang2@uwyo.edu; Tang, Jinke, E-mail: wwang5@uwyo.edu, E-mail: jtang2@uwyo.edu [Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071 (United States); Sabio, Erwin M. [Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071 (United States)

2014-05-05T23:59:59.000Z

223

Improved performance of U-Mo dispersion fuel by Si addition in Al matrix.  

SciTech Connect (OSTI)

The purpose of this report is to collect in one publication and fit together work fragments presented in many conferences in the multi-year time span starting 2002 to the present dealing with the problem of large pore formation in U-Mo/Al dispersion fuel plates first observed in 2002. Hence, this report summarizes the excerpts from papers and reports on how we interpreted the relevant results from out-of-pile and in-pile tests and how this problem was dealt with. This report also provides a refined view to explain in detail and in a quantitative manner the underlying mechanism of the role of silicon in improving the irradiation performance of U-Mo/Al.

Kim, Y S; Hofman, G L [Nuclear Engineering Division

2011-06-01T23:59:59.000Z

224

Using MPI File Caching to Improve Parallel Write Performance for Large-Scale Scientific Applications  

SciTech Connect (OSTI)

Typical large-scale scientific applications periodically write checkpoint files to save the computational state throughout execution. Existing parallel file systems improve such write-only I/O patterns through the use of clientside file caching and write-behind strategies. In distributed environments where files are rarely accessed by more than one client concurrently, file caching has achieved significant success; however, in parallel applications where multiple clients manipulate a shared file, cache coherence control can serialize I/O. We have designed a thread based caching layer for the MPI I/O library, which adds a portable caching system closer to user applications so more information about the application's I/O patterns is available for better coherence control. We demonstrate the impact of our caching solution on parallel write performance with a comprehensive evaluation that includes a set of widely used I/O benchmarks and production application I/O kernels.

Liao, Wei-keng [Northwestern University, Evanston; Ching, Avery [Northwestern University, Evanston; Coloma, Kenin [Northwestern University, Evanston; Nisar, Arifa [Northwestern University, Evanston; Choudhary, Alok [Northwestern University, Evanston; Chen, Jackie [Sandia National Laboratories (SNL); Sankaran, Ramanan [ORNL; Klasky, Scott A [ORNL

2007-01-01T23:59:59.000Z

225

Using MPI file caching to improve parallel write performance for large-scale scientific applications  

SciTech Connect (OSTI)

Typical large-scale scientific applications periodically write checkpoint files to save the computational state throughout execution. Existing parallel file systems improve such write-only I/O patterns through the use of client-side file caching and write-behind strategies. In distributed environments where files are rarely accessed by more than one client concurrently, file caching has achieved significant success; however, in parallel applications where multiple clients manipulate a shared file, cache coherence control can serialize I/O. We have designed a thread based caching layer for the MPI I/O library, which adds a portable caching system closer to user applications so more information about the application's I/O patterns is available for better coherence control. We demonstrate the impact of our caching solution on parallel write performance with a comprehensive evaluation that includes a set of widely used I/O benchmarks and production application I/O kernels.

Sankaran, Ramanan [ORNL; Liao, Wei-Keng [ORNL; Chen, Jacqueline H [Sandia National Laboratories (SNL); Klasky, Scott A [ORNL; Choudhary, Alok [Northwestern University, Evanston

2007-01-01T23:59:59.000Z

226

Performance and improvements of the tritium handling facility at the Los Alamos Scientific Laboratory  

SciTech Connect (OSTI)

A major problem facing todays nuclear energy industry is the release of radioactive waste products to the atmosphere. The DP-East Tritium Handling Facility at the Los Alamos Scientific Laboratory (LASL), activated December 5, 1974 has processed 3.8 x 10/sup 6/ curies of tritium with a total stack release of 704.5 curies as of December 12, 1979. This averages only 11.7 Ci/month which to our knowledge is the lowest stack release any major tritium facility has achieved. The facility includes an 11.5 m/sup 3/ dry box with associated gas purification system (GPS) and an effluent treatment system (FTS). The system performance, problems, and improvements are discussed with special emphasis given to the ETS, the new dry box waste disposal system, and the new automated logic control system, all of which contribute significantly to the low level tritium release at this facility.

Nasise, J.E.

1980-01-01T23:59:59.000Z

227

Performance of improved dynamic source routing algorithm for military communication logistics  

Science Journals Connector (OSTI)

Mobile ad-hoc networks (MANETs) are autonomous, self-configuring and dynamic networks that operate without the support of any fixed infrastructure. Such networks are excellent candidates for military logistics which requires identification of location of sensitive frights and other communication need. Ad hoc routing protocol supports nodes mobility with multi-hop routing overwhelming the limitations of radio coverage in remote locations. Most of the present routing protocols are not designed to adapt congestion which is the dominant reason for packet loss, longer delay and jitter. In this paper, the original DSR protocol was modified to monitor the occurrence of congestion by using multiple resource utilisation thresholds as QoS attributes and trigger multi-path-routing during the periods of congestion to improve QoS. This paper also deals with the effects of mobility on the modified routing protocol. The NS-2 simulation results showed that a significant improvement in performance of modified DSR was achieved and decreases the network congestion with the use of multi-path routing.

A. Valarmathi; R.M. Chandrasekaran

2011-01-01T23:59:59.000Z

228

Report on Acquisition and Project Management Continuous Improvement |  

Broader source: Energy.gov (indexed) [DOE]

on Acquisition and Project Management Continuous Improvement on Acquisition and Project Management Continuous Improvement Report on Acquisition and Project Management Continuous Improvement EM senior management has committed to extensive management reforms and has completed several robust improvements in contract and project management. Additional improvement initiatives are continuing and this document outlines the consolidated plan of these initiatives in a top-down framework of EM vision, goals, strategies, performance metrics, and specific improvement actions completed or being undertaken. Report on Acquisition and Project Management Continuous Improvement More Documents & Publications Microsoft Word - EERE PSRP 7 23 2010 Testimony Before the House Appropriations Subcommittee on Energy and Water Development

229

RESEARCH ARTICLE Surface metrics: an alternative to patch metrics  

E-Print Network [OSTI]

RESEARCH ARTICLE Surface metrics: an alternative to patch metrics for the quantification Abstract Modern landscape ecology is based on the patch mosaic paradigm, in which landscapes are conceptualized and analyzed as mosaics of discrete patches. While this model has been widely success- ful

230

True Performance Metrics in Electrochemical Energy Storage  

Science Journals Connector (OSTI)

...capacitance. An extreme case would be the use of a carbon aerogel with 90% porosity. The volumetric energy of such an electrode will...material used in a micrometer-thin film on a chip or a nanotube coating on a smart fabric is negligible. These systems may show a...

Y. Gogotsi; P. Simon

2011-11-18T23:59:59.000Z

231

Improving Indoor Environmental Quality And Energy Performance Of Modular Classroom HVAC Systems  

E-Print Network [OSTI]

INDOOR ENVIRONMENTAL QUALITY AND ENERGY PERFORMANCE OFINDOOR ENVIRONMENTAL QUALITY AND ENERGY PERFORMANCE OFEnergy efficiency and indoor environmental quality (IEQ) are

Apte, Michael G.; Spears, Michael; Lai, Chi-Ming; Shendell, Derek G.

2005-01-01T23:59:59.000Z

232

VOC Exposure Metrics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

6 6 VOC Exposure Metrics ... and "Sick Building Syndrome" Figure1: The elevated odds ratios (above unity) in this figure suggest that exposures to VOCs from water-based points and solvents are associated with a variety of sick building symptions (* indicates the OR is significant at p < 0.05; ** for p < 0.01). The indoors is often regarded as safe haven from problems associated with outdoor air pollution, but a growing number of reports have suggested that exposures in indoor environments may lead to health problems. One area in which evidence has been accumulating is the relationship between working in office buildings (as opposed to industrial exposure conditions) and a variety of health effects, such as eye, nose, and throat irritation and

233

Benchmarking optimization software with performance profiles  

E-Print Network [OSTI]

Abstract: We propose performance profiles -- probability distribution functions for a performance metric -- as a tool for benchmarking and comparing optimization ...

Elizabeth Dolan

234

Improving process performances in coal gasification for power and synfuel production  

SciTech Connect (OSTI)

This paper is aimed at developing process alternatives of conventional coal gasification. A number of possibilities are presented, simulated, and discussed in order to improve the process performances, to avoid the use of pure oxygen, and to reduce the overall CO{sub 2} emissions. The different process configurations considered include both power production, by means of an integrated gasification combined cycle (IGCC) plant, and synfuel production, by means of Fischer-Tropsch (FT) synthesis. The basic idea is to thermally couple a gasifier, fed with coal and steam, and a combustor where coal is burnt with air, thus overcoming the need of expensive pure oxygen as a feedstock. As a result, no or little nitrogen is present in the syngas produced by the gasifier; the required heat is transferred by using an inert solid as the carrier, which is circulated between the two modules. First, a thermodynamic study of the dual-bed gasification is carried out. Then a dual-bed gasification process is simulated by Aspen Plus, and the efficiency and overall CO{sub 2} emissions of the process are calculated and compared with a conventional gasification with oxygen. Eventually, the scheme with two reactors (gasifier-combustor) is coupled with an IGCC process. The simulation of this plant is compared with that of a conventional IGCC, where the gasifier is fed by high purity oxygen. According to the newly proposed configuration, the global plant efficiency increases by 27.9% and the CO{sub 2} emissions decrease by 21.8%, with respect to the performances of a conventional IGCC process. 29 refs., 7 figs., 5 tabs.

M. Sudiro; A. Bertucco; F. Ruggeri; M. Fontana [University of Padova, Milan (Italy). Italy and Foster Wheeler Italiana Spa

2008-11-15T23:59:59.000Z

235

Performance improvement of silicon nitride ball bearings by ion implantation. CRADA final report  

SciTech Connect (OSTI)

The present report summarizes technical results of CRADA No. ORNL 92-128 with the Pratt and Whitney Division of United Technologies Corporation. The stated purpose of the program was to assess the 3effect of ion implantation on the rolling contact performance of engineering silicon nitride bearings, to determine by post-test analyses of the bearings the reasons for improved or reduced performance and the mechanisms of failure, if applicable, and to relate the overall results to basic property changes including but not limited to swelling, hardness, modulus, micromechanical properties, and surface morphology. Forty-two control samples were tested to an intended runout period of 60 h. It was possible to supply only six balls for ion implantation, but an extended test period goal of 150 h was used. The balls were implanted with C-ions at 150 keV to a fluence of 1.1 {times} 10{sup 17}/cm{sup 2}. The collection of samples had pre-existing defects called C-cracks in the surfaces. As a result, seven of the control samples had severe spalls before reaching the goal of 60 h for an unacceptable failure rate of 0.003/sample-h. None of the ion-implanted samples experienced engineering failure in 150 h of testing. Analytical techniques have been used to characterize ion implantation results, to characterize wear tracks, and to characterize microstructure and impurity content. In possible relation to C-cracks. It is encouraging that ion implantation can mitigate the C-crack failure mode. However, the practical implications are compromised by the fact that bearings with C-cracks would, in no case, be acceptable in engineering practice, as this type of defect was not anticipated when the program was designed. The most important reason for the use of ceramic bearings is energy efficiency.

Williams, J.M. [Oak Ridge National Lab., TN (United States); Miner, J. [United Technologies Corp., West Palm Beach, FL (United States). Pratt and Whitney Div.

1998-03-01T23:59:59.000Z

236

Improving central heating plant performance at the defense construction supply center (DCSC): Advanced operation and maintenance methods. Final report  

SciTech Connect (OSTI)

A 1987 air pollution emissions test done by the U.S. Army Environmental Hygiene Agency (USAEHA) identified several problems with the central heating plant (CHP) at the Defense Construction Supply Center (DCSC), Columbus, OH. Though DCSC repaired the specified problems, improved coal specifications, and tried to reduce air infiltration, CHP performance remained at unacceptable levels. Consequently, DCSC contracted the U.S. Army Construction Engineering Research Laboratories (USACERL) to apply advanced operation and maintenance procedures to improve its combustion system. This study employed a system-wide approach to evaluate the CHP 5 fuel storage, combustion, heat distribution, and the control of air emissions. Many short-term improvements to the CHP were identified and tested. Subsequent combustion and air emissions tests revealed that the recommended improvements successfully increased CHP efficiency. Long-term improvements were also recommended to help maintain the short-term improvements.

Savoie, M.J.; Standerfer, J.; Schmidt, C.M.; Gostich, J.; Mignacca, J.

1994-11-01T23:59:59.000Z

237

Contraction semigroups on metric graphs  

E-Print Network [OSTI]

The main objective of the present work is to study contraction semigroups generated by Laplace operators on metric graphs, which are not necessarily self-adjoint. We prove criteria for such semigroups to be continuity and positivity preserving. Also we provide a characterization of generators of Feller semigroups on metric graphs.

Vadim Kostrykin; Jurgen Potthoff; Robert Schrader

2008-02-26T23:59:59.000Z

238

Advanced Aerodynamic Devices to Improve the Performance, Economics, Handling, and Safety of Heavy Vehicles  

SciTech Connect (OSTI)

Research is being conducted at the Georgia Tech Research Institute (GTRI) to develop advanced aerodynamic devices to improve the performance, economics, stability, handling and safety of operation of Heavy Vehicles by using previously-developed and flight-tested pneumatic (blown) aircraft technology. Recent wind-tunnel investigations of a generic Heavy Vehicle model with blowing slots on both the leading and trailing edges of the trailer have been conducted under contract to the DOE Office of Heavy Vehicle Technologies. These experimental results show overall aerodynamic drag reductions on the Pneumatic Heavy Vehicle of 50% using only 1 psig blowing pressure in the plenums, and over 80% drag reductions if additional blowing air were available. Additionally, an increase in drag force for braking was confirmed by blowing different slots. Lift coefficient was increased for rolling resistance reduction by blowing only the top slot, while downforce was produced for traction increase by blowing only the bottom. Also, side force and yawing moment were generated on either side of the vehicle, and directional stability was restored by blowing the appropriate side slot. These experimental results and the predicted full-scale payoffs are presented in this paper, as is a discussion of additional applications to conventional commercial autos, buses, motor homes, and Sport Utility Vehicles.

Robert J. Englar

2001-05-14T23:59:59.000Z

239

Multi-strike ignition to improve performance, reduce misfiring of large gas engines  

SciTech Connect (OSTI)

New product and application information is now available on the advanced `CPU-2OOO` digital ignition system introduced by Altronic earlier this year for large-bore gas engines and integral compressors. The system is designed to improve performance, reduce misfiring, and be easily retrofitted to existing large-bore engines. including those that are being converted to lean-burn combustion in order to reduce emissions. To do this, the CPU-2OOO system features a selectable multi-striking mode, a selectable energy level and second spark plug cut-off control, a choice of global or individual cylinder timing control, and a high-energy long-duration spark. The 24 Vdc-powered system also offers comprehensive display and communications capabilities, plus system diagnostics and self-test functions. The system uses existing Altronic II-CPU coils, pickups, primary wiring harnesses and other hardware, allowing for easy upgrades of existing II-CPU installations. Also, a detonation avoidance system is being developed as an option for engine protection. Altronic says the field tests have demonstrated the ability of the CPU-20OO system to ignite extra-lean mixtures created when turbochargers are added to engines that previously operated at much richer levels. NO{sub x} emissions have been reduced by as much as 88%, to less than 2.7 g/kWh.

NONE

1995-10-01T23:59:59.000Z

240

Improvement of a turbocharger by-pass valve and impact on performance, controllability, noise and durability  

Science Journals Connector (OSTI)

ABSTRACT Over the past years, the evolution of emission standards as well as the advent of Fuel economy targets has driven the need for higher controllability of boost pressure. This is a strong trend, which will continue to be true for both gasoline and diesel engine applications as we prepare for further evolutions of standards and introduction of fuel economy regulations. While engine boundary conditions have become harsher, fine, accurate and sustainable control of boost is challenging the way mechatronics components are engineered. This requires us to apply a System Engineering approach and improve our understanding of the behaviour of the entire control chain so that we can ultimately influence the design and drive performance at the System level. This paper describes key elements of the kinematic tools developed by Honeywell Turbocharger Technologies in order to optimize turbocharger control solutions. It includes details on CAE applications such as fluid dynamics, flexible multi-body dynamics and thermo-mechanical simulations and how they can be linked together to analyse a complete system. It highlights the importance of understanding the behaviour of the whole control chain from the actuator command to the turbocharger and engine response. The paper presents results from one main examples on a new waste-gate concept for Fixed geometry turbochargers primarily for gasoline applications. This examples show how kinematic tools can be applied to achieve controllability and durability targets while accelerating development cycle time.

L. Toussaint; M. Marques; N. Morand; P. Davies; C. Groves; F. Tomanec; M. Zatko; D. Vlachy; R. Mrazek

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Occurrence reporting and processing system (ORPS) lessons learned: Tools to improve workplace performance  

SciTech Connect (OSTI)

Various Department of Energy (DOE) orders require DOE and DOE contractor personnel to review abnormal events to gain lessons learned information. The term ``event`` is used to mean a real-time occurrence. When reviewing events data, it must be possible to determine what happened and why (including root causes), the impacts, the appropriate corrective actions, and any lessons learned that might be applicable to activities of other operations or contractors. Merely obtaining the information will not prevent occurrence of a similar event; contributing conditions must be corrected. It is important for managers, trainers, and others to learn from the events of others so that they may apply these experiences to their own activities. Reports of events must be analyzed to determine possible applicability to other facilities and/or job functions. Relevant information can then be used to correct defects and improve facilities and operations, thus making them more efficient and safer for all employees. Lessons learned information is particularly helpful in planning employee training and in developing training curriculum and programs. Lessons learned information can be obtained from many sources. It can be found in the Safety Performance Measurement System`s Computerized Accident/Incident Reporting System (CAIRS) module, the S&H Publications module, the Unusual Occurrence Reports module, and the Office of Nuclear Safety ``Operating Experience Weekly Summary.`` One important source of lessons teamed information is the Occurrence Reporting and Processing System (ORPS) database, which contains event data from September 1, 1990, to the present. This report discusses this source.

Commander, S.L.

1992-12-31T23:59:59.000Z

242

Occurrence reporting and processing system (ORPS) lessons learned: Tools to improve workplace performance  

SciTech Connect (OSTI)

Various Department of Energy (DOE) orders require DOE and DOE contractor personnel to review abnormal events to gain lessons learned information. The term event'' is used to mean a real-time occurrence. When reviewing events data, it must be possible to determine what happened and why (including root causes), the impacts, the appropriate corrective actions, and any lessons learned that might be applicable to activities of other operations or contractors. Merely obtaining the information will not prevent occurrence of a similar event; contributing conditions must be corrected. It is important for managers, trainers, and others to learn from the events of others so that they may apply these experiences to their own activities. Reports of events must be analyzed to determine possible applicability to other facilities and/or job functions. Relevant information can then be used to correct defects and improve facilities and operations, thus making them more efficient and safer for all employees. Lessons learned information is particularly helpful in planning employee training and in developing training curriculum and programs. Lessons learned information can be obtained from many sources. It can be found in the Safety Performance Measurement System's Computerized Accident/Incident Reporting System (CAIRS) module, the S H Publications module, the Unusual Occurrence Reports module, and the Office of Nuclear Safety Operating Experience Weekly Summary.'' One important source of lessons teamed information is the Occurrence Reporting and Processing System (ORPS) database, which contains event data from September 1, 1990, to the present. This report discusses this source.

Commander, S.L.

1992-01-01T23:59:59.000Z

243

DOE-Supported Technology Passes Scale-Up Test Converting CO DOE-Sponsored Research Improves Gas Turbine Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

into Valuable Materials into Valuable Materials Publications News Release Release Date: June 17, 2013 DOE-Sponsored Research Improves Gas Turbine Performance DOE Lab Receives Award for Work on Drilling Technology An innovative airfoil manufacturing technology that promises to improve the performance of state-of-the-art gas turbines has been commercialized through research sponsored by the U.S. Department of Energy. Photo courtesy of Mikro Systems, Inc. Washington, D.C. - An innovative airfoil manufacturing technology that promises to improve the performance of state-of-the-art gas turbines has been commercialized through research sponsored by the U.S. Department of Energy (DOE). The technology - which is expected to contribute to cleaner, more reliable and affordable domestic energy production as well as creating new

244

10 - Improving the environmental performance of heavy-duty vehicles and engines: key issues and system design approaches  

Science Journals Connector (OSTI)

Abstract: This chapter reviews various advanced technologies to improve the efficiency and environmental performance of heavy-duty engines, including design and operating characteristics of key subsystems such as fuel injection, conventional and advanced low-temperature combustion, turbocharging, exhaust gas recirculation (EGR), variable valve actuation (VVA), cooling, aftertreatment, waste heat recovery (WHR), and electronic controls. Engine downsizing, down-speeding, down-breathing, turbocompounding, and air system capability performance are summarized by engine system theoretical analysis and numerical simulation for fuel consumption improvement.

Q. Xin; C.F. Pinzon

2014-01-01T23:59:59.000Z

245

Improved performance of the Boeing/LANL FEL experiment: Extraction efficiency and cavity-length detuning effects  

Science Journals Connector (OSTI)

We observed significant improvement in the performance of the Boeing/LANL free-electron laser (FEL) experiment in the last year. Some of the more graphic demonstrations of this improved performance are presented in the time-resolved optical spectral measurements (streak/spectrometer) and the electron-beam spectral measurements. We have observed an extraction efficiency of about 14% for the uniform wiggler and nearly 1% for the tapered-wiggler experiment. We also present experimental evidence consistent with a sideband instability and its suppression by cavity-length detuning.

A.H. Lumpkin; R.L. Tokar; D.H. Dowell; A.R. Lowrey; A.D. Yeremian; R.E. Justice

1990-01-01T23:59:59.000Z

246

Improving Energy Efficiency through Commissioning: Getting Started with Commissioning, Monitoring, and Maintaining Performance  

E-Print Network [OSTI]

Performance Measurement and Verification Protocol: Conceptssavings. Measurement and Verification (M&V) The process of

Parrish, Kristen

2014-01-01T23:59:59.000Z

247

Enhancing performing characteristics of organic semiconducting films by improved solution processing  

DOE Patents [OSTI]

Improved processing methods for enhanced properties of conjugated polymer films are disclosed, as well as the enhanced conjugated polymer films produced thereby. Addition of low molecular weight alkyl-containing molecules to solutions used to form conjugated polymer films leads to improved photoconductivity and improvements in other electronic properties. The enhanced conjugated polymer films can be used in a variety of electronic devices, such as solar cells and photodiodes.

Bazan, Guillermo C; Moses, Daniel; Peet, Jeffrey; Heeger, Alan J

2014-05-13T23:59:59.000Z

248

E-Print Network 3.0 - attention improves performance Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Vis. Res. 99 - improves or impairs ... Source: Carrasco, Marisa - Department of Psychology, New York University Collection: Biology and Medicine 2 PLoS Biology |...

249

Support vector machines improve the accuracy of evaluation for the performance of laparoscopic training tasks  

E-Print Network [OSTI]

009-0556-6 Support vector machines improve the accuracy ofand support vector machine [SVM]) were compared. Theevaluation Á Support vector machines Á Training B. Allen (&)

Allen, Brian; Nistor, Vasile; Dutson, Erik; Carman, Greg; Lewis, Catherine; Faloutsos, Petros

2010-01-01T23:59:59.000Z

250

Variable buoyancy system metric  

E-Print Network [OSTI]

Over the past 20 years, underwater vehicle technology has undergone drastic improvements, and vehicles are quickly gaining popularity as a tool for numerous oceanographic tasks. Systems used on the vehicle to alter buoyancy, ...

Jensen, Harold Franklin

2009-01-01T23:59:59.000Z

251

Segmental alternations and metrical theory  

E-Print Network [OSTI]

This dissertation focuses on phonological alternations that are influenced or constrained by word-internal prosody, i.e. prominence and foot structure, and what these alternations can tell us about metrical theory. Detailed ...

Vaysman, Olga

2009-01-01T23:59:59.000Z

252

List of SEP Reporting Metrics  

Broader source: Energy.gov [DOE]

DOE State Energy Program List of Reporting Metrics, which was produced by the Office of Energy Efficiency and Renewable Energy Weatherization and Intergovernmental Program for SEP and the Energy Efficiency and Conservation Block Grants (EECBG) programs.

253

Tracking performance characterization and improvement of a piezoactuated micropositioning system based on an empirical index  

Science Journals Connector (OSTI)

Motion tracking is an important problem in micropositioning systems dedicated to ultra-precision robotic micromanipulation. This paper investigates the periodic motion tracking performance of a micropositioning system based on an empirical tracking performance ... Keywords: Micromanipulator, Motion control, Performance characterization, Piezoelectric actuation, Robust control, System identification

Qingsong Xu; Yangmin Li

2010-12-01T23:59:59.000Z

254

Reduced Graphene Oxide Wrapped FeS Nanocomposite for Lithium-Ion Battery Anode with Improved Performance  

Science Journals Connector (OSTI)

Reduced Graphene Oxide Wrapped FeS Nanocomposite for Lithium-Ion Battery Anode with Improved Performance ... A new nanocomposite formulation of the FeS-based anode for lithium-ion batteries is proposed, where FeS nanoparticles wrapped in reduced graphene oxide (RGO) are produced via a facile direct-precipitation approach. ...

Ling Fei; Qianglu Lin; Bin Yuan; Gen Chen; Pu Xie; Yuling Li; Yun Xu; Shuguang Deng; Sergei Smirnov; Hongmei Luo

2013-05-14T23:59:59.000Z

255

Improvement of pin-type amorphous silicon solar cell performance by employing double silicon-carbide p-layer structure  

E-Print Network [OSTI]

Improvement of pin-type amorphous silicon solar cell performance by employing double silicon-carbide Received 30 October 2003; accepted 18 November 2003 We investigated a double silicon-carbide p-layer structure consisting of a undiluted p-type amorphous silicon-carbide (p-a-SiC:H) window layer and a hydrogen

Kim, Yong Jung

256

Improving the Control Performance of an Organic Rankine Cycle System for Waste Heat Recovery from a Heavy-Duty  

E-Print Network [OSTI]

Improving the Control Performance of an Organic Rankine Cycle System for Waste Heat Recovery from and efficiency of those systems. The system considered here is an Organic Rankine Cycle (ORC) for recovering internal combustion engines presented in [1]. The system considered here is an Organic Rankine Cycle (ORC

Paris-Sud XI, Université de

257

Genetic algorithms for door-assigning and sequencing of trucks at distribution centers for the improvement of operational performance  

Science Journals Connector (OSTI)

In a supply chain, cross docking is one of the most innovative systems for improving the operational performance at distribution centers. By utilizing this cross docking system, products are delivered to the distribution center via inbound trucks and ... Keywords: Distribution center, Genetic algorithm, Supply chain, Truck scheduling

Kangbae Lee; Byung Soo Kim; Cheol Min Joo

2012-12-01T23:59:59.000Z

258

can significantly improve the performance of colour-conversion In addition to applications as efficient colour converters, nano-  

E-Print Network [OSTI]

that the `energy- transfer pumping' scheme studied here provides carrier inflow that can in principle compete. The latter value is comparable to the carrier inflow rate provided by energy transfer from the quantum wellcan significantly improve the performance of colour-conversion devices. In addition to applications

Pierrehumbert, Raymond

259

Biotechnology in the potential practical application of somatotrophic hormones for improving animal performance  

E-Print Network [OSTI]

Biotechnology in the potential practical application of somatotrophic hormones for improving animal-1566, Switzerland. Summary. The use of biotechnology now allows adequate supplies of previously scarce, together with rapid advances in biotechnology, have produced an environment for potentially exciting

Paris-Sud XI, Université de

260

Performance and design improvements toward the commercialization of a needle-free jet injector/  

E-Print Network [OSTI]

In the past years, the BioInstrumentation Lab has developed a handheld needle-free jet injector based on a custom Lorentz-force motor. While the current handheld design is effective as a research tool, many improvements ...

Modak, Ashin (Ashin Pramod)

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Property:OpenEI/CETSI/Metrics | Open Energy Information  

Open Energy Info (EERE)

Metrics Metrics Jump to: navigation, search Property Name OpenEI/CETSI/Metrics Property Type Text Description Environmental aspects and performance metrics associated with the resource. Pages using the property "OpenEI/CETSI/Metrics" Showing 25 pages using this property. (previous 25) (next 25) A An Overview of Existing Wind Energy Ordinances + The objective of these communities is to facilitate and regulate the development of Wind Energy Conversion Systems. Animal Farm Powers Village + The plant will produce 350 kilowatts per hour, "enough to supply 175 homes with electricity). C City of Aspen Climate Action Plan + The Climate Action Plan calls for greenhouse gas reductions of 30 percent by 2020 and 80 percent by 2050 from its 2004 baseline. Performance metrics are quantified by tons of CO2-e reduced. Based on a 2007 update to the baseline emissions inventory, the community achieved emissions reductions of 68,380 tons. The energy and environmental achievements as of the Plan's adoption in 2007 are outlined as updates within the Plan. To date, there has been no progress report on the Climate Action Plan per se, however the City's environmental achievements are described in the biennial Sustainability Report available at: http://www.aspenpitkin.com/Portals/0/docs/City/GreenInitiatives/enviro_sustainability_report_2008.pdf

262

Improving Building Performance at Urban Scale with a Framework for Real-time Data Sharing  

E-Print Network [OSTI]

approaches for building energy modeling: forward model andbe developed for rapid building energy modeling at the urbanbuilding performance, energy efficiency, energy modeling,

Pang, Xiufeng

2014-01-01T23:59:59.000Z

263

Tennessee: U.S. Automaker Improves Plant’s Performance, Saves Costs  

Office of Energy Efficiency and Renewable Energy (EERE)

Nissan invested $331,000 to implement Superior Energy Performance (including internal staff time), resulting in a payback of just four months.

264

Improve Chilled Water System Performance, Software Tools for Industry, Industrial Technologies Program (ITP) (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes how the Industrial Technologies Program Chilled Water System Analysis Tool (CWSAT) can help optimize the performance of of industrial chilled water systems.

Not Available

2008-12-01T23:59:59.000Z

265

Metrics for Evaluating the Accuracy of Solar Power Forecasting: Preprint  

SciTech Connect (OSTI)

Forecasting solar energy generation is a challenging task due to the variety of solar power systems and weather regimes encountered. Forecast inaccuracies can result in substantial economic losses and power system reliability issues. This paper presents a suite of generally applicable and value-based metrics for solar forecasting for a comprehensive set of scenarios (i.e., different time horizons, geographic locations, applications, etc.). In addition, a comprehensive framework is developed to analyze the sensitivity of the proposed metrics to three types of solar forecasting improvements using a design of experiments methodology, in conjunction with response surface and sensitivity analysis methods. The results show that the developed metrics can efficiently evaluate the quality of solar forecasts, and assess the economic and reliability impact of improved solar forecasting.

Zhang, J.; Hodge, B. M.; Florita, A.; Lu, S.; Hamann, H. F.; Banunarayanan, V.

2013-10-01T23:59:59.000Z

266

Methodology, Methods, and Metrics for Testing and Evaluating Augmented Cognition Systems  

SciTech Connect (OSTI)

The augmented cognition research community seeks cognitive neuroscience-based solutions to improve warfighter performance by applying and managing mitigation strategies to reduce workload and improve the throughput and quality of decisions. The focus of augmented cognition mitigation research is to define, demonstrate, and exploit neuroscience and behavioral measures that support inferences about the warfighter’s cognitive state that prescribe the nature and timing of mitigation. A research challenge is to develop valid evaluation methodologies, metrics and measures to assess the impact of augmented cognition mitigations. Two considerations are external validity, which is the extent to which the results apply to operational contexts; and internal validity, which reflects the reliability of performance measures and the conclusions based on analysis of results. The scientific rigor of the research methodology employed in conducting empirical investigations largely affects the validity of the findings. External validity requirements also compel us to demonstrate operational significance of mitigations. Thus it is important to demonstrate effectiveness of mitigations under specific conditions. This chapter reviews some cognitive science and methodological considerations in designing augmented cognition research studies and associated human performance metrics and analysis methods to assess the impact of augmented cognition mitigations.

Greitzer, Frank L.

2008-09-15T23:59:59.000Z

267

Improving the Performance of Action Prediction through Identification of Abstract Tasks  

E-Print Network [OSTI]

learning. Introduction Our aim is to solve the prediction problem with a view towards home automation. In automating the home, the inhabitant's future actions can be performed without the inhabitant or user actions can be performed autonomously. Automation will provide a start towards the home adapting

Cook, Diane J.

268

Heating, Ventilating, and Air-Conditioning: Recent Advances in Diagnostics and Controls to Improve Air-Handling System Performance  

SciTech Connect (OSTI)

The performance of air-handling systems in buildings needs to be improved. Many of the deficiencies result from myths and lore and a lack of understanding about the non-linear physical principles embedded in the associated technologies. By incorporating these principles, a few important efforts related to diagnostics and controls have already begun to solve some of the problems. This paper illustrates three novel solutions: one rapidly assesses duct leakage, the second configures ad hoc duct-static-pressure reset strategies, and the third identifies useful intermittent ventilation strategies. By highlighting these efforts, this paper seeks to stimulate new research and technology developments that could further improve air-handling systems.

Wray, Craig; Wray, Craig P.; Sherman, Max H.; Walker, I.S.; Dickerhoff, D.J.; Federspiel, C.C.

2008-02-01T23:59:59.000Z

269

Improving TCP Performance over Networks with Wireless Components using ``Probing Devices''  

E-Print Network [OSTI]

, but the actual ``sending window'' never exceeds the minimum of the advertised and congestion window. Standard TCP­Tahoe and TCP­Reno. We show that, this way, standard TCP can improve its per­ formance without requiring any the design limitations of the probing device itself. The aggressive or conservative nature of the probing

Tsaoussidis, Vassilis

270

Improving the Performance of Air-Conditioning Systems in an ASEAN Climate  

E-Print Network [OSTI]

This paper describes an analysis of air conditioning performance under hot and humid tropical climate conditions appropriate to the Association of South East Asian Nations (ASEAN) countries. This region, with over 280 million people, has one...

Busch, J. F.; Warren, M. L.

1988-01-01T23:59:59.000Z

271

Development of an improved sodium exposure test cell experiment for characterization of AMTEC electrode performance  

E-Print Network [OSTI]

An investigation into sources of inconsistencies in sodium exposure test cell (SETC) measurements, used to characterize AMTEC electrode performance, was conducted. Development of modifications to the SETC setup and operation was also accomplished...

Fiebig, Bradley Nelson

2012-06-07T23:59:59.000Z

272

Integrated approach towards the application of horizontal wells to improve waterflooding performance. Quarterly report, January 1--March 31, 1997  

SciTech Connect (OSTI)

The overall purpose of the proposed project is to improve secondary recovery performance of a marginal oil field through the use of an appropriate reservoir management plan. The selection of plan will be based on the detailed reservoir description using an integrated approach. The authors expect that 2 to 5% of the original oil in place will be recovered using this method. This should extend the life of the reservoir by at least 10 years. The project is divided into two stages. In Stage 1 of the project, the authors selected part of the Glenn Pool Field-Self Unit. They conducted cross borehole tomography surveys and formation micro scanner logs through a newly drilled well. By combining the state-of-the-art data with conventional core and log data, they developed a detailed reservoir description based on an integrated approach. After conducting extensive reservoir simulation studies, they evaluated alternate reservoir management strategies to improve the reservoir performance including drilling of a horizontal injection well. They observed that selective completion of many wells followed by an increase in the injection rate was the most feasible option to improve the performance of the Self Unit. This management plan is currently being implemented and the performance is being monitored. Stage 2 of the project will involve selection of part of the same reservoir (Berryhill Unit-Tract 7), development of reservoir description using only conventional data, simulation of flow performance using developed reservoir description, selection of an appropriate reservoir management plan, and implementation of the plan followed by monitoring of reservoir performance.

Kelkar, M.; Liner, C.; Kerr, D.

1997-10-01T23:59:59.000Z

273

The role of neuro-fuzzy modelling as a greening technique, in improving the performance of vehicular spark ignition engine  

Science Journals Connector (OSTI)

The spark ignition engine, by far, is the largest source of motive power in the world. Therefore, continuous endeavours to improve its performance are needed to save in fuel consumption and reduce cost. The main goal of this paper is to develop a neuro-fuzzy model for fuel Injection Time (IT) in order to design a neuro-fuzzy controller for improving the performance of the spark ignition engine. The obtained results showed that the developed neuro-fuzzy model is capable of predicting the fuel IT with a mean squared error less than 0.0072. Furthermore, the power produced by the neuro-fuzzy controller has higher values of about 15-73% than the power produced by the PID controller used in the basic engine. The BSFC is reduced by about 2-5% compared to the PID controller.

Mashhour M. Bani Amer; Yousef S.H. Najjar

2010-01-01T23:59:59.000Z

274

Message from the Owner of the Improved Financial Performance Initiative of the Presidents Management Agenda:  

Broader source: Energy.gov (indexed) [DOE]

I am enthusiastic and proud to be the owner of the Improved Financial Performance initiative of the President's Management Agenda (PMA) in the Department of Energy (DOE). The Department has received clean opinions on its annual financial statements for six straight years with no material internal control weaknesses identified by the auditors. Further, DOE was successful in maintaining its clean opinion for the FY 2004 financial statements while accelerating issuance to 45 days after the end of the fiscal year. For the third quarter of FY 2004, when the Department of Energy received a Green status score on Improved Financial Performance, DOE was one of only five agencies with a Green status score on this initiative. I am enormously proud

275

Possible Origin of Improved High Temperature Performance of Hydrothermally Aged Cu/Beta Zeolite Catalysts  

SciTech Connect (OSTI)

The hydrothermal stability of Cu/beta NH3 SCR catalysts are explored here. In particular, this paper focuses on the interesting ability of this catalyst to maintain and even enhance high-temperature performance for the "standard" SCR reaction after modest (900 °C, 2 hours) hydrothermal aging. Characterization of the fresh and aged catalysts was performed with an aim to identify possible catalytic phases responsible for the enhanced high temperature performance. XRD, TEM and 27Al NMR all showed that the hydrothermally aging conditions used here resulted in almost complete loss of the beta zeolite structure between 1 and 2 hours aging. While the 27Al NMR spectra of 2 and 10 hour hydrothermally-aged catalysts showed significant loss of a peak associated with tetrahedrally-coordinated Al species, no new spectral features were evident. Two model catalysts, suggested by these characterization data as possible mimics of the catalytic phase formed during hydrothermal aging of Cu/beta, were prepared and tested for their performance in the "standard" SCR and NH3 oxidation reactions. The similarity in their reactivity compared to the 2 hour hydrothermally-aged Cu/beta catalyst suggests possible routes for preparing multi-component catalysts that may have wider temperature windows for optimum performance than those provided by current Cu/zeolite catalysts.

Peden, Charles HF; Kwak, Ja Hun; Burton, Sarah D.; Tonkyn, Russell G.; Kim, Do Heui; Lee, Jong H.; Jen, H. W.; Cavattaio, Giovanni; Cheng, Yisun; Lambert, Christine

2012-04-30T23:59:59.000Z

276

High Temperature Steam Electrolysis: Demonstration of Improved Long-Term Performance  

SciTech Connect (OSTI)

Long-term performance is an ongoing issue for hydrogen production based on high-temperature steam electrolysis (HTSE). For commercial deployment, solid-oxide electrolysis stacks must achieve high performance with long-term degradation rates of {approx}0.5%/1000 hours or lower. Significant progress has been achieved toward this goal over the past few years. This paper will provide details of progress achieved under the Idaho National Laboratory high temperature electrolysis research program. Recent long-term stack tests have achieved high initial performance with degradation rates less than 5%/khr. These tests utilize internally manifolded stacks with electrode-supported cells. The cell material sets are optimized for the electrolysis mode of operation. Details of the cells and stacks will be provided along with details of the test apparatus, procedures, and results.

J. E. O'Brien; X. Zhang; R. C. O'Brien; G. Tao

2011-11-01T23:59:59.000Z

277

Horizon thermodynamics and composite metrics  

E-Print Network [OSTI]

We examine the conditions under which the thermodynamic behaviour of gravity can be explained within an emergent gravity scenario, where the metric is defined as a composite operator. We show that due to the availability of a boundary of a boundary principle for the quantum effective action, Clausius-like relations can always be constructed. Hence, any true explanation of the thermodynamic nature of the metric tensor has to be referred to an equilibration process, associated to the presence of an H-theorem, possibly driven by decoherence induced by the pregeometric degrees of freedom, and their entanglement with the geometric ones.

Lorenzo Sindoni

2012-11-12T23:59:59.000Z

278

Beyond Language Independent Object-Oriented Metrics: Model Independent Metrics  

E-Print Network [OSTI]

@iam.unibe.ch Software Composition Group Universit´a di Berna, Svizzera St´ephane Ducasse ducasse@iam.unibe.ch Software Composition Group Universit´e de Berne, Suisse ABSTRACT Software Metrics have become essential in software engi- neering for several reasons, among which quality assessment and reengineering. In the context

Ducasse, Stéphane

279

Conceptual Soundness, Metric Development, Benchmarking, and Targeting for PATH Subprogram Evaluation  

SciTech Connect (OSTI)

The objective of this study is to evaluate the conceptual soundness of the U.S. Department of Housing and Urban Development (HUD) Partnership for Advancing Technology in Housing (PATH) program's revised goals and establish and apply a framework to identify and recommend metrics that are the most useful for measuring PATH's progress. This report provides an evaluative review of PATH's revised goals, outlines a structured method for identifying and selecting metrics, proposes metrics and benchmarks for a sampling of individual PATH programs, and discusses other metrics that potentially could be developed that may add value to the evaluation process. The framework and individual program metrics can be used for ongoing management improvement efforts and to inform broader program-level metrics for government reporting requirements.

Mosey. G.; Doris, E.; Coggeshall, C.; Antes, M.; Ruch, J.; Mortensen, J.

2009-01-01T23:59:59.000Z

280

Parental effects improve escape performance of juvenile reef fish in a high-CO2 world  

Science Journals Connector (OSTI)

...performance of juvenile reef fish in a high-CO2 world Bridie J. M. Allan 1 Gabrielle M...Torregrande, Oristano, Italy Rising CO2 levels in the oceans are predicted to have...parental effects may reduce the impact of high CO2 on the growth, survival and routine metabolic...

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Improving a robotics framework with real-time and high-performance features  

Science Journals Connector (OSTI)

Middleware has a key role in modern and object-oriented robotics frameworks, which aim at developing reusable, scalable and maintainable systems using different platforms and programming languages. However, complex robotics software falls into the category ... Keywords: data distribution service, middleware, performance, real-time, robotics

Jesús Martínez; Adrián Romero-Garcés; Luis Manso; Pablo Bustos

2010-11-01T23:59:59.000Z

282

The Consistency of Virtual Organizations Enabling Capabilities and Improvements in Knowledge Management Performance  

Science Journals Connector (OSTI)

The success of a virtual organization VO largely depends on the effective collaboration of its members in orchestrating their knowledge, skills, core competences and resources. It enables the VOs to enhance competitive capabilities and respond better ... Keywords: Contingency Theory, Enabling Capabilities, Information and Communication Technology, Knowledge Management, Knowledge Management Performance KMP, Virtual Organization VO

Ali Moeini; Alireza Farmahini Farahani; Ahad Zare Ravasan

2013-04-01T23:59:59.000Z

283

Improving environmental performances of organic spreading technologies through the use of life cycle  

E-Print Network [OSTI]

) is generally used to assess environmental performances of a product or a system. Some agricultural LCA were, France Corresponding author*: marilys.pradel@cemagref.fr Abstract Life Cycle Assessment (LCA into account the direct contributions of agricultural machinery. In this paper, we develop the three step

Boyer, Edmond

284

Understanding the Role of Different Conductive Polymers in Improving the Nanostructured Sulfur Cathode Performance  

E-Print Network [OSTI]

of obstacles, including poor cycle life, low Coulombic efficiency, and low active material utilization.5 Cathode Performance Weiyang Li, Qianfan Zhang, Guangyuan Zheng,§ Zhi Wei Seh, Hongbin Yao, and Yi Cui*,, Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United

Cui, Yi

285

Nanoparticle-induced light scattering for improved performance of quantum-well solar cells  

E-Print Network [OSTI]

performance of InP/InGaAsP quantum-well waveguide solar cells via light scattering from deposited dielectric of quantum wells to ensure high photon absorption efficiency and increased short-circuit current den- sity homojunction device by extending the absorption spectrum to longer wavelengths.6,7 We show here that nor- mally

Yu, Edward T.

286

Alternative fuels for low emissions and improved performance in CI and heavy duty engines  

SciTech Connect (OSTI)

Contents include: Limited durability of the diesel engine with a dual-fuel system on neat sunflower oil; Analysis and testing of a high-pressure micro-compressor; Spark-assisted alcohol operation in a low heat rejection engine; Combustion improvement of heavy-duty methanol engine by using autoignition system; Clean Fleet Alternative Fuels demonstration project; Vehicle fuel economy -- the Clean Fleet Alternative Fuels project; Safety and occupational hygiene results -- Clean Fleet Alternative Fuels project; Vehicle reliability and maintenance -- Clean Fleet Alternative Fuels project; Flammability tests of alcohol/gasoline vapors; Flame luminosity enhancement of neat methanol fuel by non-aromatic hydrocarbon additives; and more.

NONE

1995-12-31T23:59:59.000Z

287

Advanced Energy Retrofit Guide: Practical Ways to Improve Energy Performance; Grocery Stores (Revised) (Book)  

SciTech Connect (OSTI)

The U.S. Department of Energy developed the Advanced Energy Retrofit Guides (AERGs) to provide specific methodologies, information, and guidance to help energy managers and other stakeholders successfully plan and execute energy efficiency improvements. Detailed technical discussion is fairly limited in these guides. Instead, we emphasize actionable information, practical methodologies, diverse case studies, and unbiased evaluations of the most promising retrofit measures for each building type. A series of AERGs is under development, addressing key segments of the commercial building stock. Grocery stores were selected as one of the highest priority sectors, because they represent one of the most energy-intensive market segments.

Hendron, B.

2013-07-01T23:59:59.000Z

288

Primer Control System Cyber Security Framework and Technical Metrics  

SciTech Connect (OSTI)

The Department of Homeland Security National Cyber Security Division supported development of a control system cyber security framework and a set of technical metrics to aid owner-operators in tracking control systems security. The framework defines seven relevant cyber security dimensions and provides the foundation for thinking about control system security. Based on the developed security framework, a set of ten technical metrics are recommended that allow control systems owner-operators to track improvements or degradations in their individual control systems security posture.

Wayne F. Boyer; Miles A. McQueen

2008-05-01T23:59:59.000Z

289

Common Carbon Metric | Open Energy Information  

Open Energy Info (EERE)

Common Carbon Metric Common Carbon Metric Jump to: navigation, search Tool Summary Name: Common Carbon Metric Agency/Company /Organization: United Nations Environment Programme, World Resources Institute Sector: Energy Focus Area: Buildings, Energy Efficiency, Industry Topics: GHG inventory, Implementation Resource Type: Guide/manual, Publications Website: www.unep.org/sbci/pdfs/Common-Carbon-Metric-for_Pilot_Testing_220410.p Common Carbon Metric Screenshot References: Common Carbon Metrics [1] "This paper is offered by the United Nations Environment Programme's Sustainable Buildings & Climate Initiative (UNEP-SBCI), a partnership between the UN and public and private stakeholders in the building sector, promoting sustainable building practices globally. The purpose of this

290

Improved characterization of reservoir behavior by integration of reservoir performances data and rock type distributions  

SciTech Connect (OSTI)

An integrated geological/petrophysical and reservoir engineering study was performed for a large, mature waterflood project (>250 wells, {approximately}80% water cut) at the North Robertson (Clear Fork) Unit, Gaines County, Texas. The primary goal of the study was to develop an integrated reservoir description for {open_quotes}targeted{close_quotes} (economic) 10-acre (4-hectare) infill drilling and future recovery operations in a low permeability, carbonate (dolomite) reservoir. Integration of the results from geological/petrophysical studies and reservoir performance analyses provide a rapid and effective method for developing a comprehensive reservoir description. This reservoir description can be used for reservoir flow simulation, performance prediction, infill targeting, waterflood management, and for optimizing well developments (patterns, completions, and stimulations). The following analyses were performed as part of this study: (1) Geological/petrophysical analyses: (core and well log data) - {open_quotes}Rock typing{close_quotes} based on qualitative and quantitative visualization of pore-scale features. Reservoir layering based on {open_quotes}rock typing {close_quotes} and hydraulic flow units. Development of a {open_quotes}core-log{close_quotes} model to estimate permeability using porosity and other properties derived from well logs. The core-log model is based on {open_quotes}rock types.{close_quotes} (2) Engineering analyses: (production and injection history, well tests) Material balance decline type curve analyses to estimate total reservoir volume, formation flow characteristics (flow capacity, skin factor, and fracture half-length), and indications of well/boundary interference. Estimated ultimate recovery analyses to yield movable oil (or injectable water) volumes, as well as indications of well and boundary interference.

Davies, D.K.; Vessell, R.K. [David K. Davies & Associates, Kingwood, TX (United States); Doublet, L.E. [Texas A& M Univ., College Station, TX (United States)] [and others

1997-08-01T23:59:59.000Z

291

Rather than resonance, flapping wing flyers may play on aerodynamics to improve performance  

E-Print Network [OSTI]

Saving energy and enhancing performance are secular preoccupations shared by both nature and human beings. In animal locomotion, flapping flyers or swimmers rely on the flexibility of their wings or body to passively increase their efficiency using an appropriate cycle of storing and releasing elastic energy. Despite the convergence of many observations pointing out this feature, the underlying mechanisms explaining how the elastic nature of the wings is related to propulsive efficiency remain unclear. Here we use an experiment with a self-propelled simplified insect model allowing to show how wing compliance governs the performance of flapping flyers. Reducing the description of the flapping wing to a forced oscillator model, we pinpoint different nonlinear effects that can account for the observed behavior ---in particular a set of cubic nonlinearities coming from the clamped-free beam equation used to model the wing and a quadratic damping term representing the fluid drag associated to the fast flapping motion. In contrast to what has been repeatedly suggested in the literature, we show that flapping flyers optimize their performance not by especially looking for resonance to achieve larger flapping amplitudes with less effort, but by tuning the temporal evolution of the wing shape (i.e. the phase dynamics in the oscillator model) to optimize the aerodynamics.

Sophie Ramananarivo; Ramiro Godoy-Diana; Benjamin Thiria

2011-08-29T23:59:59.000Z

292

Why is the metric invertible?  

E-Print Network [OSTI]

We raise, and provide an (unsatisfactory) answer to, the title's question: why, unlike all other fields, does the gravitational "metric" variable not have zero vacuum? After formulating, without begging it, we exhibit additions to the conventional action that express existence of the inverse through a field equation.

S. Deser

2006-03-30T23:59:59.000Z

293

Lorentzian Metrics from Characteristic Surfaces  

E-Print Network [OSTI]

The following issue is raised and discussed; when do families of foliations by hypersurfaces on a given four dimensional manifold become the null surfaces of some unknown, but to be determined, metric $g_{ab}(x)$? It follows from these results that one can use these surfaces as fundamental variables for GR.

Simonetta Frittelli; Carlos Kozameh; Ted Newman

1995-02-11T23:59:59.000Z

294

Case Study- The Challenge: Improving the Performance of a Waste-To-Energy Facility  

Broader source: Energy.gov [DOE]

This case study examines how the City of Long Beach, California, was able to improve the operational efficiency of its Southeast Resource Recovery Facility (SERRF), a recycling and solid waste-to-energy plant. To replace inlet damper control and reduce energy consumption, variable frequency drives (VFDs) were installed on the induced draft fans of three boiler systems. As a result of the retrofit, facility energy consumption was reduced by more than 34 percent (3,661,200 kWh per year), and the facility saved more than $329,500 annually. Taking into consideration a $400,000 California Energy Commission grant, the simple net payback for this project was just under 10 months.

295

Incremental performance improvements for a surface-convergency H- ion source  

SciTech Connect (OSTI)

We discuss some of the interventions on LANSCE's surface-conversion negative-hydrogen ion sources to increase reliability; lifetime and output without any major re-design of the machine. LANSCE's source presently delivers a baseline 16 mA, 60 Hz, 12% duty factor beam. We describe how better quality control and processing of tungsten filaments allow the comfortable completion of 28-day run cycles, how improved temperature control of the ion source body yields an increased H{sup -} output, how higher input power through an additional filament allows operations at plasma densities while maintaining the filament lifetime and how adequate electrode biasing inside the source provide some control over the beam Twiss parameters on exit.

Rouleau, Gary [Los Alamos National Laboratory; Chacon - Golcher, Edwin [Los Alamos National Laboratory; Geros, Ernest [Los Alamos National Laboratory; Johnson, Kenneth [Los Alamos National Laboratory; Rybarcyk, Lawrence [Los Alamos National Laboratory; Stelzer, James [Los Alamos National Laboratory; Keller, Roderich [NON LANL; Tarvainen, Olli [NON LANL

2010-11-10T23:59:59.000Z

296

A linear MOSFET regulation system to improve the performance of the booster-ramping power supplies at the APS.  

SciTech Connect (OSTI)

The APS booster ring uses ramping power supplies to power the sextupole, quadrupole, and dipole magnets as the beam energy ramps up linearly to 7 GeV. Due to the circuit topology used, those supplies are unable to follow the linear ramp to the desired accuracy. The best regulation achieved is 0.5% while 0.1 % is desired. In addition to the unsatisfying regulation, those supplies are sensitive to AC line perturbations and are not able to reject AC line noises higher than a few tens of Hertz. To improve the performance, a linear MOSFET regulation system using paralleled MOSFET devices in series with the power supply is proposed. The system uses a real-time current feedback loop to force the MOSFETs to work in the linear operation mode. By using this linear MOSFET regulator, the voltage drop on MOSFETs, and hence the voltage imposed on magnets, can be regulated very quickly. As a result, the regulation of the magnet current can be improved significantly. Experiments and simulation have been performed to verify the proposed method. Results show that, with the linear regulator, the current regulation can be improved to better than 0.1%. Because of the high bandwidth of the linear regulator, it can reduce the harmonic content in the output current as well as reject the AC line disturbance.

Feng, G.; Deriy, B.; Wang, J.; Shang, H.; Xu, S.

2008-01-01T23:59:59.000Z

297

Performance improvement of phenyl acetate as propylene carbonate-based electrolyte additive for lithium ion battery by fluorine-substituting  

Science Journals Connector (OSTI)

Abstract Phenyl acetate (PA) is more stable and much cheaper than vinylene carbonate (VC), a commercial electrolyte additive for graphite anode of lithium ion battery, but its performance needs to be improved. In this paper, we report a new additive, 4-fluorophenyl acetate (4-FPA), which results from the fluorine-substituting of PA. The properties of the formed solid electrolyte interphase (SEI) by 4-FPA are investigated comparatively with PA by molecular energy level calculation, cyclic voltammetry, charge–discharge test, scanning electron microscopy, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. It is found that the SEI formed by 4-FPA is more protective than PA, resulting in the improved cyclic stability of lithium ion battery: the capacity retention of LiFePO4/graphite cell after 90 cycles is 92% for 4-FPA but only 84% for PA. The fluorine in 4-FPA makes it more reducible than PA and the fluorine-containing reduction products of 4-FPA are incorporated into the SEI, which contributes to the improved performance.

Bin Li; Yaqiong Wang; Haibin Lin; Xianshu Wang; Mengqing Xu; Yating Wang; Lidan Xing; Weishan Li

2014-01-01T23:59:59.000Z

298

Modular condenser replacement at ANO-1 solves operating problems and improves performance  

SciTech Connect (OSTI)

After 22 years of operation, the condenser tube bundles and waterboxes at Arkansas Nuclear One, Unit 1 (ANO-1) had deteriorated significantly, impairing operating performance, reducing condenser reliability and increasing maintenance cost. An extensive condition assessment performed in 1995 revealed a 34% wall loss on the original Admiralty tubing and an erosion rate of 1.7% annually. Additionally, Arkansas Nuclear One was considering an 8% power uprate, which would place additional duty on the main condenser. As a result, it was decided to completely reconstruct the four condenser tube bundles serving the two low-pressure turbines at Arkansas Nuclear One. An evaluation of the available condenser tube materials was performed to determine which material was best suited for service in the single pass, single pressure condenser at ANO-1. All copper based materials were excluded from consideration due to the detrimental effect copper has on secondary chemistry and more specifically steam generator integrity. Titanium and a variety of stainless steel materials were evaluated, and ultimately titanium was selected as the replacement condenser tube material for the rebuilt condenser tube bundles due primarily to its corrosion resistance and extensive operating experience in condenser service. An impressed current cathodic protection system and epoxy waterbox coating was also installed to prevent galvanic corrosion of the carbon steel waterboxes. The cathodic protection system included local alarm indication to alert plant operating staff of any system malfunction that could result in titanium hydrating. A comparison of the heat transfer characteristics of the existing condenser design with Admiralty tubes and a new tube bundle design with titanium tubes concluded that a new tube bundle design was required to optimize the condenser performance and accommodate the anticipated 8% power uprate. This paper will discuss the condenser optimization program from the design state to final installation. Further, it was decided to completely shop fabricate these four titanium tube bundles to minimize the site erection schedule. Each bundle measuring over 44 ft. (13.5 m) long, over 13 ft, (4 m) wide, and nearly 18 ft. (5.5 m) tall, weighed 195,000 lbs (88,450 kg). The weight and size of the bundles created a variety of fabrication, transportation and installation challenges that required extensive advanced planning, scheduling and coordination. The complete installation of the redesigned condenser tube bundles and waterboxes was accomplished during the Fourteenth Refueling Outage of ANO-1 in 1997.

Edgell, D.; Davidian, A.

1999-07-01T23:59:59.000Z

299

Improving the performance of the Y-12 fluidized bed contactors: Final report on investigations at the University of Tennessee  

SciTech Connect (OSTI)

Recent tests at The University of Tennessee in Knoxville (UT) have demonstrated improved fluidization performance in a mockup of the Oak Ridge Y-12 Plant fluidized bed with a modified gas distributor. Combining the modified distributor with the recently developed fluidization intensity module is expected to result in substantial operational improvements for the fluidized beds in Building 9212 at Y-12. Important additional benefits coming from the improved operation of the Y-12 fluidized beds will be a reduction in the consumption of reactant gases, a reduction in scrubber waste production, and a reduced need for manual cleaning of the particulate removal system. UT tests have also demonstrated that the tapered wall design traditionally used for the Y-12 fluidized beds does not provide a sufficient improvement in fluidization quality to justify the continued use of this design in place of a more conventional straight-wall configuration. The straight-wall design for replacement beds is expected to result in substantial equipment cost savings. Other operating scenarios that could potentially be used to reduce reactant gas consumption and scrubber waste production have also been considered. These scenarios are documented here for future reference.

Daw, C.S.; Hawk, J.A. [Oak Ridge National Lab., TN (United States)

1993-08-01T23:59:59.000Z

300

Improving Switching Performance of Power MOSFETs Used in High Rep-Rate, Short Pulse, High-Power Pulsers  

SciTech Connect (OSTI)

As their switching and power handling characteristics improve, solid-state devices are finding new applications in pulsed power. This is particularly true of applications that require fast trains of short duration pulses. High voltage (600-1200V) MOSFETs are especially well suited for use in these systems, as they can switch at significant peak power levels and are easily gated on and off very quickly. MOSFET operation at the shortest pulse durations is not constrained by the intrinsic capabilities of the MOSFET, but rather by the capabilities of the gate drive circuit and the system physical layout. This project sought to improve MOSFET operation in a pulsed power context by addressing these issues. The primary goal of this project is to improve the switching performance of power MOSFETs for use in high rep-rate, short pulse, high-power applications by improving the design of the gate drive circuits and the circuit layouts used in these systems. This requires evaluation of new commercial gate drive circuits and upgrading the designs of LLNL-developed circuits. In addition, these circuits must be tested with the fastest available high-voltage power MOSFETs.

Cook, E G

2006-09-19T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Improving DOE Project Performance Using the DOD Integrated Master Plan - 12481  

SciTech Connect (OSTI)

DOE O 413 measures a project's progress to plan by the consumption of funding, the passage of time, and the meeting of milestones. In March of 2003, then Under Secretary, Energy, Science, Card received a memo directing the implementation of Project Management and the Project Management Manual, including the Integrated Master Plan and Integrated Master Schedule. This directive states 'the integrated master plan and schedule tie together all project tasks by showing their logical relationships and any constraints controlling the start or finish of each task. This process results in a hierarchy of related functional and layered schedules derived from the Work Breakdown Structure that can be used for monitoring and controlling project progress'. This paper shows how restoring the IMP/IMS paradigm to DOE program management increases the probability of program success in ways not currently available using DOD O 413 processes alone. Using DOE O 413 series guidance, adding the Integrated Master Plan and Integrated Master Schedule paradigm would provide a hierarchical set of performance measures for each 'package of work,' that provides measurable visibility to the increasing maturity of the project. This measurable maturity provides the mechanism to forecast future performance of cost, schedule, and technical outcomes in ways not available using just the activities in DOE O 413. With this information project managers have another tool available to address the issues identified in GAO-07-336 and GAO-09-406. (authors)

Alleman, Glen B. [DOD Programs, Project Time and Cost (United States); Nosbisch, Michael R. [Managing Principle, Western Region, Project Time and Cost (United States)

2012-07-01T23:59:59.000Z

302

A Dynamic Performance Analysis on CANDU Fuel Handling System for Operational Improvement  

SciTech Connect (OSTI)

The dynamic performance of the Fueling Machine (F/M) Heavy Water (D{sub 2}O) supply system for Wolsong Nuclear Power Plant (NPP) was evaluated using Modular Modeling System (MMS) computer code. Parametric study has been carried out to investigate the effects of dual common set pressure and the position change rate of series valve on the dynamic behavior of common header pressure and common bleed valve position during the mode changes of supply pressure. The results show that the introduction of the series valve position demand curve and the dual common header set pressure is effective to attenuate the overshoot of common header pressure during mode changes. This does not lead any adverse effects on the system performance of supply pressure control and heavy water supply to F/M during the mode changes. The dynamic evaluation results of the F/M D{sub 2}O supply system will be used for the new control system parameter settings and help to relieve system operators' burdens during the system operation. (authors)

Jeong Mann Kim; Byung Ryul Jung [Korea Power Engineering Company, Inc, 360 9 Mabuk Dong, Giheung-gu Yongin-si, Gyeonggi-do 449-713 (Korea, Republic of); Wan Kyu Park [Korea Hydro and Nuclear Power Company, 167 Samseong-dong, Kangnam-gu, Seoul 135-791 (Korea, Republic of)

2002-07-01T23:59:59.000Z

303

Control of household refrigerators. Part 2: Alternate control approaches for improving temperature performance and reducing energy use  

SciTech Connect (OSTI)

In Part 1 it was shown that conventional control of household refrigerators is achieved by regulating the distribution of air in the freezer compartment to all other parts of the plant. In Part 2 three alternative approaches to the conventional control of a top-mount refrigerator are presented: variable temperature bandwidths, uncoupled compressor and evaporator fan, and the combination of these two. These allowed the plant to achieve near-ideal control with respect to improved temperature performance in each compartment. Automatic airflow dampers were used with the dual controllers to independently regulate refrigerator compartment temperature. Plant performance was simulated using a model that computes the refrigerant and airflow systems behavior. Together, these alternate configurations and approaches define new control algorithms that reveal the plant's optimal control model for improving performance and energy usage relative to conventional controllers. Results based on model simulations are dependent upon the model's accuracy and validity. However, the model validation studies cited here, though limited in scope, do show agreement between simulation and experimental data for the ambient temperatures and thermal load conditions considered. This suggests that these model results are reasonable, and representative of actual plant behavior under these conditions and configurations for a top-mount style refrigerator plant.

Graviss, K.J.; Collins, R.L.

1999-07-01T23:59:59.000Z

304

METRIC CHARACTERIZATIONS OF SPHERICAL AND EUCLIDEAN BUILDINGS  

E-Print Network [OSTI]

BUILDINGS Ruth Charney and Alexander Lytchak 0 of spaces satisfying CAT-inequalities are spherical and Euclidean buildings which come equipped with a natural piecewise spherical or Euclidean metric. Buildings also satisfy other nice metric properties

Charney, Ruth

305

Establishment of an Industry-Driven Consortium Focused on Improving the Production Performance of Domestic Stripper Wells  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy (DOE), National Energy Technology Laboratory (NETL) established a national industry-driven Stripper Well Consortium (SWC) that is focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas industries and trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the eighth quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) Organize and host the 2006 Spring Meeting in State College, PA to review and select projects for SWC co-funding; (2) Participation in the 2006 PA CleanEnergy Expo Energy Theater to air the DVD on ''Independent Oil: Rediscovering American's Forgotten Wells''; (3) New member additions; (4) Improving communications; and (5) Planning of the fall technology meetings.

Joel L. Morrison; Sharon L. Elder

2006-05-01T23:59:59.000Z

306

Establishment of an Industry-Driven Consortium Focused on Improving the Production Performance of Domestic Stripper Wells  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy (DOE), National Energy Technology Laboratory (NETL) has established a national industry-driven Stripper Well Consortium (SWC) that is focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas industries and trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the seventh quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) Nomination and election of the Executive Council members for the 2006-07 term, (2) Finalize and release the 2006 Request for Proposals (RFP), (3) Invoice and recruit members, (4) Plan for the spring meeting, (5) Improving communication efforts, and (6) Continue distribution of the DVD entitled: ''Independent Oil: Rediscovering American's Forgotten Wells''.

Joel L. Morrison; Sharon L. Elder

2006-04-21T23:59:59.000Z

307

Using Post-Occupancy Evaluation to Inform Design and Improve Performance  

E-Print Network [OSTI]

p p ro a c h e s t o p e rf o rm a n c e actual performance – lighting 0 20 40 60 80 100 Gloria Marshall ES Garrett ES York ES * highest rating in SHW study * Re-site Partial re-site New design %age satisfaction rate ESL-KT-13-12-15 CATEE 2013...: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 0 5 10 15 20 25 30 35 Gloria Marshall ES Garrett ES York ES Actual 25.2 kBTU/sqft/yr Predicted 18.4 kBTU/sqft/yr Actual 23.9 kBTU/sqft/yr Predicted 32.3 kBTU/sqft/yr No energy...

Langer, S.

2013-01-01T23:59:59.000Z

308

Improved resins and novel materials and methods for solid phase extraction and high performance liquid chromatography  

SciTech Connect (OSTI)

Solid-phase extraction (SPE) has grown to be one of the most widely used methods for isolation and preconcentration of a vast range of compounds from aqueous solutions. By modifying polymeric SPE resins with chelating functional groups, the selective uptake of metals was accomplished. The resin, along with adsorbed metals, was vaporized in the ICP and detection of the metals was then possible using either mass or emission spectroscopy. Drug analyses in biological fluids have received heightened attention as drug testing is on the increase both in sports and in the work environment. By using a direct-injection technique, biological fluids can be injected directly into the liquid chromatographic system with no pretreatment. A new surfactant, a sulfonated form of Brij-30 (Brij-S) is shown to prevent the uptake of serum proteins on commercial HPLC columns by forming a thin coating on the silica C18 surface. Excellent separations of eight or more drugs with a wide range of retention times were obtained. The separations had sharper peaks and lower retention times than similar separations performed with the surfactant sodium dodecylsulfate (SDS). Quantitative recovery of a number of drugs with limits of detection near 1 ppm with a 5 {micro}l injection volume were obtained. Finally, a method for solid-phase extraction in a syringe is introduced. The system greatly reduced the volume of solvent required to elute adsorbed analytes from the SPE bed while providing a semi-automated setup. SPE in a syringe consists of a very small bed of resin-loaded membrane packed into a GC or HPLC syringe. After extraction, elution was performed with just a few {micro}l of solvent. This small elution volume allowed injection of the eluent directly from the syringe into the chromatographic system, eliminating the handling problems associated with such small volumes.

Freeze, R.

1997-10-08T23:59:59.000Z

309

Technical Workshop: Resilience Metrics for Energy Transmission...  

Energy Savers [EERE]

Metrics J. Mark Drexel Presentation: Risk Assessment for Storm Hardening Anders Johnson Presentation: Natural Gas Transportation Resiliency Christina Sames Presentation:...

310

Predicting Classes in Need of Refactoring: An Application of Static Metrics Liming Zhao Jane Huffman Hayes  

E-Print Network [OSTI]

. In general, the following process is followed by a software team performing refactoring: Identify code1 Predicting Classes in Need of Refactoring: An Application of Static Metrics Liming Zhao Jane to predicting refactoring candidates. Using a selected set of static metrics and a weighted ranking method

Hayes, Jane E.

311

Effect of updated data base and improved analysis on performance of radioisotope thermophotovoltaic converter  

SciTech Connect (OSTI)

Previous analyses of RTPV space power systems published by the authors were based on a number of approximations employed to permit early dissemination of preliminary results pending availability of fuller experimental data need3d to conduct more rigorous analyses. Among those approximations were: (1) the use of limited test data and optimistic projections of the spectral transmissivity of the RTPV`s selective IR filters and of the spectral quantum efficiency of the GaSb PV cells; (2) the use of theoretical formulas instead of experimental measurements of the PV cell`s open-circuit voltage, fill factor, and optimum voltage instead of its measured current-voltage characteristics; (3) rough estimates of the TPV converter`s active-area fraction instead of computed values based on detailed designs; (4) inadequate accounting for the effect of radiation reflected by the IR filter and absorbed by the emitter in reducing the generator`s required heat input; and (5) omission of the shadowing effect and ohmic losses caused by the PV cell`s grid lines. The above-listed shortcomings of the previously published analyses are addressed in the present paper, which describes revised analyses based on recently obtained experimental data of IR filter reflectivities and PV cell quantum efficiencies and current-voltage characteristic, measured by EDTEK under an OSC-initiated subcontract to its ongoing DOE contract. Their test results show that EDTEK has been eminently successful in improving the reflectivities of the IR filters and in reproducing the quantum efficiencies of Boeing`s best PV cells, but their initial (Dec-95) PV cell fell far short of matching the open-circuit voltages and fill factors predicted by theory.

Schock, A.; Or, C.T. [Orbital Sciences Corp., Germantown, MD (United States)

1996-12-31T23:59:59.000Z

312

METRIC CHARACTERIZATIONS OF SPHERICAL AND EUCLIDEAN BUILDINGS  

E-Print Network [OSTI]

METRIC CHARACTERIZATIONS OF SPHERICAL AND EUCLIDEAN BUILDINGS Ruth Charney and Alexander Lytchak 0-inequalities are spherical and Euclidean buildings which come equipped with a natural piecewise spherical or Euclidean metric. Buildings also satisfy other nice metric properties. A spherical building X, for example, is easily seen

Charney, Ruth

313

Improved Recovery Boiler Performance Through Control of Combustion, Sulfur, and Alkali Chemistry  

SciTech Connect (OSTI)

This project involved the following objectives: 1. Determine black liquor drying and devolatilization elemental and total mass release rates and yields. 2. Develop a public domain physical/chemical kinetic model of black liquor drop combustion, including new information on drying and devolatilization. 3. Determine mechanisms and rates of sulfur scavenging in recover boilers. 4. Develop non-ideal, public-domain thermochemistry models for alkali salts appropriate for recovery boilers 5. Develop data and a one-dimensional model of a char bed in a recovery boiler. 6. Implement all of the above in comprehensive combustion code and validate effects on boiler performance. 7. Perform gasification modeling in support of INEL and commercial customers. The major accomplishments of this project corresponding to these objectives are as follows: 1. Original data for black liquor and biomass data demonstrate dependencies of particle reactions on particle size, liquor type, gas temperature, and gas composition. A comprehensive particle submodel and corresponding data developed during this project predicts particle drying (including both free and chemisorbed moisture), devolatilization, heterogeneous char oxidation, char-smelt reactions, and smelt oxidation. Data and model predictions agree, without adjustment of parameters, within their respective errors. The work performed under these tasks substantially exceeded the original objectives. 2. A separate model for sulfur scavenging and fume formation in a recovery boiler demonstrated strong dependence on both in-boiler mixing and chemistry. In particular, accurate fume particle size predictions, as determined from both laboratory and field measurements, depend on gas mixing effects in the boilers that lead to substantial particle agglomeration. Sulfur scavenging was quantitatively predicted while particle size required one empirical mixing factor to match data. 3. Condensed-phase thermochemistry algorithms were developed for salt mixtures and compared with sodium-based binary and higher order systems. Predictions and measurements were demonstrated for both salt systems and for some more complex silicate-bearing systems, substantially exceeding the original scope of this work. 4. A multi-dimensional model of char bed reactivity developed under this project demonstrated that essentially all reactions in char beds occur on or near the surface, with the internal portions of the bed being essentially inert. The model predicted composition, temperature, and velocity profiles in the bed and showed that air jet penetration is limited to the immediate vicinity of the char bed, with minimal impact on most of the bed. The modeling efforts substantially exceeded the original scope of this project. 5. Near the completion of this project, DOE withdrew the BYU portion of a multiparty agreement to complete this and additional work with no advanced warning, which compromised the integration of all of this material into a commercial computer code. However, substantial computer simulations of much of this work were initiated, but not completed. 6. The gasification modeling is nearly completed but was aborted near its completion according to a DOE redirection of funds. This affected both this and the previous tasks.

Baxter, Larry L.

2008-06-09T23:59:59.000Z

314

Low-complexity atlas-based prostate segmentation by combining global, regional, and local metrics  

SciTech Connect (OSTI)

Purpose: To improve the efficiency of atlas-based segmentation without compromising accuracy, and to demonstrate the validity of the proposed method on MRI-based prostate segmentation application. Methods: Accurate and efficient automatic structure segmentation is an important task in medical image processing. Atlas-based methods, as the state-of-the-art, provide good segmentation at the cost of a large number of computationally intensive nonrigid registrations, for anatomical sites/structures that are subject to deformation. In this study, the authors propose to utilize a combination of global, regional, and local metrics to improve the accuracy yet significantly reduce the number of required nonrigid registrations. The authors first perform an affine registration to minimize the global mean squared error (gMSE) to coarsely align each atlas image to the target. Subsequently, atarget-specific regional MSE (rMSE), demonstrated to be a good surrogate for dice similarity coefficient (DSC), is used to select a relevant subset from the training atlas. Only within this subset are nonrigid registrations performed between the training images and the target image, to minimize a weighted combination of gMSE and rMSE. Finally, structure labels are propagated from the selected training samples to the target via the estimated deformation fields, and label fusion is performed based on a weighted combination of rMSE and local MSE (lMSE) discrepancy, with proper total-variation-based spatial regularization. Results: The proposed method was applied to a public database of 30 prostate MR images with expert-segmented structures. The authors’ method, utilizing only eight nonrigid registrations, achieved a performance with a median/mean DSC of over 0.87/0.86, outperforming the state-of-the-art full-fledged atlas-based segmentation approach of which the median/mean DSC was 0.84/0.82 when applying to their data set. Conclusions: The proposed method requires a fixed number of nonrigid registrations, independent of atlas size, providing desirable scalability especially important for a large or growing atlas. When applied to prostate segmentation, the method achieved better performance to the state-of-the-art atlas-based approaches, with significant improvement in computation efficiency. The proposed rationale of utilizing jointly global, regional, and local metrics, based on the information characteristic and surrogate behavior for registration and fusion subtasks, can be extended naturally to similarity metrics beyond MSE, such as correlation or mutual information types.

Xie, Qiuliang; Ruan, Dan, E-mail: druan@mednet.ucla.edu [The Department of Radiation Oncology, University of California Los Angeles, California 90095 (United States)] [The Department of Radiation Oncology, University of California Los Angeles, California 90095 (United States)

2014-04-15T23:59:59.000Z

315

ESTABLISHMENT OF AN INDUSTRY-DRIVEN CONSORTIUM FOCUSED ON IMPROVING THE PRODUCTION PERFORMANCE OF DOMESTIC STRIPPER WELLS  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy (DOE), National Energy Technology Laboratory (NETL), will establish, promote, and manage a national industry-driven Stripper Well Consortium (SWC) that will be focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas industries and trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the eighth quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) issuing subcontracts, (2) SWC membership class expansion, (3) planning SWC technology transfer meetings, and (4) extending selected 2001 project periods of performance. In addition, a literature search that focuses on the use of lasers, microwaves, and acoustics for potential stripper well applications continued.

Joel L. Morrison

2002-09-27T23:59:59.000Z

316

Reach: A low cost-approach to reducing stack emissions and improving the performance of oil-fired boilers  

SciTech Connect (OSTI)

Improved oil combustion technology, based upon optimization of oil atomizer and flame stabilizer design, has been retrofit to oil-fired boilers to reduce NO{sub x} emissions, particulate matter emissions, and opacity, and to provide operational and performance benefits. This technology, referred to as REACH, can be retrofit to wall-fired and tangential-fired boilers at a cost of less than $0.75/kW, a fraction of the cost of installing new burners. The technology is compatible with conventional NO{sub x} controls such as overfire air, flue gas recirculation, and low-NO{sub x} burners, and can be combined with these techniques to further reduce NO{sub x} emissions. REACH has been applied to eighty boilers representing over 14,000 MW of generating capacity. This paper describes REACH technology, its applicability and cost, and the emissions and performance results achieved in full scale applications.

Giovanni, D.V.; McElroy, M.W.; Kerho, S.E. [Electric Power Technologies, Inc., Menlo Park, CA (United States)

1996-01-01T23:59:59.000Z

317

Improving the Field Performance of Natural Gas Furnaces, Chicago, Illinois (Fact Sheet)  

SciTech Connect (OSTI)

The objective of this project is to examine the impact that common installation practices and age-induced equipment degradation may have on the installed performance of natural gas furnaces, as measured by steady-state efficiency and AFUE. PARR identified twelve furnaces of various ages and efficiencies that were operating in residential homes in the Des Moines Iowa metropolitan area and worked with a local HVAC contractor to retrieve them and test them for steady-state efficiency and AFUE in the lab. Prior to removal, system airflow, static pressure, equipment temperature rise, and flue loss measurements were recorded for each furnace. After removal from the field the furnaces were transported to the Gas Technology Institute (GTI) laboratory, where PARR conducted steady-state efficiency and AFUE testing. The test results show that steady-state efficiency in the field was 6.4% lower than that measured for the same furnaces under standard conditions in the lab, which included tuning the furnace input and air flow rate. Comparing AFUE measured under ASHRAE standard conditions with the label value shows no reduction in efficiency for the furnaces in this study over their 15 to 24 years of operation when tuned to standard conditions. Further analysis of the data showed no significant correlation between efficiency change and the age or the rated efficiency of the furnace.

Rothgeb, S.; Brand, L.

2013-11-01T23:59:59.000Z

318

SPINEL-BASED REFRACTORIES FOR IMPROVED PERFORMANCE IN COAL GASIFICATION ENVIRONMENTS  

SciTech Connect (OSTI)

Oak Ridge National Laboratory, in collaboration with refractory manufacturer Minteq International, Inc., academic partner Missouri University of Science and Technology and refractory end users have developed novel refractory systems and techniques to reduce energy consumption of refractory lined vessels. The objective of this U.S. DOE funded project was to address the need for innovative refractory compositions by developing MgO-Al 2O3 spinel gunnable refractory compositions utilizing new aggregate materials, bond systems, protective coatings, and phase formation techniques. Materials have been developed specifically for coal gasification environments and work has been performed to develop and apply low cost coatings using a colloidal approach for protection against attack of the refractory brick by the service environment and to develop a light-weight back-up refractory system to help offset the high thermal conductivity inherent in spinel materials. This paper discusses the systematic development of these materials, laboratory testing and evaluation of these materials, and relevant results achieved toward the reduction of chemical reactions and mechanical degradation by the service environment though compositional and processing modifications.

Hemrick, James Gordon [ORNL; Armstrong, Beth L [ORNL; Rodrigues-Schroer, Angela [Minteq International, Inc.; Colavito, [Minteq International, Inc.; Smith, Jeffrey D [ORNL; O'Hara, Kelley [University of Missouri, Rolla

2013-01-01T23:59:59.000Z

319

An efficient flooding algorithm for improving network performance in optical WDM networks  

Science Journals Connector (OSTI)

In any networking environment, network and resource information has to be maintained periodically for re-routing the traffic. Especially in fault tolerant optical networks, after the faults are detected and recovered, the network topology changes have to be constantly configured for correct light path decisions to be made. In order to maintain correct routing tables and also to prevent blocking of forthcoming calls by the failed connection, the flooding messages have been broadcast to all nodes. When every node in the network floods the messages, problems arise of excessive redundancy of messages, resource contention and signal collision. This causes high protocol overhead and interference with the existing traffic in the networks. In this paper, lazy flooding algorithm is analysed and simulated by comparing the performance of all-flooding method and threshold flooding. Here, instead of flooding for each channel status update, such as to be changed from available to occupy or vice versa, we hold the process of update till it reaches certain points. The simulation results shows that the proposed flooding method achieves reduced blocking probability with increased throughput thereby increasing the scalability of the network.

M. Arunachalam; V. Rajamani

2014-01-01T23:59:59.000Z

320

Glucose oxidase enzyme immobilized porous silica for improved performance of a glucose biosensor  

Science Journals Connector (OSTI)

Abstract High activity of glucose oxidase (GOD) enzyme (immobilized in porous silica particles) is desirable for a better glucose biosensor. In this work, effect of pore diameter of two porous hosts on enzyme immobilization, activity and glucose sensing was compared. The hosts were amine functionalized: (i) microporous silica (NH2-MS) and (ii) mesoporous silica (NH2-SBA-15). Based on whether the dimension of GOD is either larger or smaller than the pore diameter, GOD was immobilized on either external or internal surface of NH2-MS and NH2-SBA-15, with loadings of 512.5 and 634 mg/g, respectively. However, GOD in NH2-SBA-15 gave a higher normalized absolute activity (NAA), which led to an amperometric sensor with a larger linear range of 0.4–13.0 mM glucose. In comparison, GOD in NH2-MS had a lower NAA and a smaller linear range of 0.4–3.1 mM. In fact, the present GOD-NH2-SBA-15 electrode based sensor was better than other MS and SBA-15 based electrodes reported in literature. Thus, achieving only a high GOD loading (as in NH2-MS) does not necessarily give a good sensor performance. Instead, a host with a relatively larger pore than enzyme, together with optimized electrode composition ensures the sensor to be functional in both hyper- and hypoglycemic range.

Anees Y. Khan; Santosh B. Noronha; Rajdip Bandyopadhyaya

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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321

An oxygenating additive for improving the performance and emission characteristics of marine diesel engines  

Science Journals Connector (OSTI)

Diesel engines provide the major power sources for marine transportation and contribute to the prosperity of the worldwide economy. However, the emissions from diesel engines also seriously threaten the environment and are considered one of the major sources of air pollution. The pollutants emitted from marine vessels are confirmed to cause the ecological environmental problems such as the ozone layer destruction, enhancement of the greenhouse effect, and acid rain, etc. Marine diesel engine emissions such as particulate matter and black smoke carry carcinogen components that significantly impact the health of human beings. Investigations on reducing pollutants, in particular particulate matter and nitrogen oxides are critical to human health, welfare and continued prosperity. The addition of an oxygenating agent into fuel oil is one of the possible approaches for reducing this problem because of the obvious fuel oil constituent influences on engine emission characteristics. Ethylene glycol monoacetate was found to be a promising candidate primarily due to its low poison and oxygen-rich composition properties. In this experimental study ethylene glycol monoacetate was mixed with diesel fuel in various proportions to prepare oxygenated diesel fuel. A four-cylinder diesel engine was used to test the engine performance and emission characteristics. The influences of ethylene glycol monoacetate ration to diesel oil, inlet air temperature and humidity parameters on the engine’s speed and torque were considered. The experimental results show that an increase in the inlet air temperature caused an increase in brake specific fuel consumption (BSFC), carbon monoxide, carbon dioxide emission, and exhaust gas temperature, while decreasing the excess air, oxygen and nitrogen oxide emission concentrations. Increasing the inlet air humidity increased the carbon monoxide concentration while the decreased excess air, oxygen and nitrogen oxide emission concentrations. In addition, increasing ethylene glycol monoacetate ratio in the diesel fuel caused an increase in the BSFC while the excess air and oxygen emission concentrations decreased.

C.-Y. Lin; J.-C. Huang

2003-01-01T23:59:59.000Z

322

Plasma Performance Improvement with Lithium-Coated Plasma-Facing Components in NSTX  

SciTech Connect (OSTI)

Lithium as a plasma-facing material has many attractive features, including a reduction in the recycling of hydrogenic species and the potential for withstanding high heat and neutron fluxes in fusion reactors. Recent NSTX experiments have shown, for the first time, significant and recurring benefits of lithium coatings on plasma-facing components (PFC's) to the performance of divertor plasmas in both L- and H- mode confinement regimes heated by high-power neutral beams. They included decreases in the plasma density and inductive flux consumption, and increases in the electron temperature, ion temperature, energy confinement time, and DD neutron rate. Extended periods of MHD quiescence were also achieved, and measurements of the visible emission from the lower divertor showed a reduction in the deuterium, carbon, and oxygen line emission. Other salient results with lithium evaporation included a broadening of the electron temperature profile, and changes in edge density gradients that benefited electron Bernstein wave coupling. There was also a reduction in ELM frequency and amplitude, followed by a period of complete ELM suppression. In general, it was observed that both the best and the average confinement occurred after lithium deposition and that the increase in WMHD occurs mostly through an increase in We. In addition, a liquid lithium divertor (LLD) is being installed on NSTX this year. As the first fully-toroidal liquid metal divertor target, experiments with the LLD can provide insight into the behavior of metallic ITER PFC's should they liquefy during high-power divertor tokamak operations. The NSTX lithium coating and LLD experiments are important near-term steps in demonstrating the potential of liquid lithium as a solution to the first-wall problem for both magnetic and inertial fusion reactors.

Kaita, R; Kugel, H; Bell, M G; Bell, R; Boedo, J; Bush, C; Ellis, R; Gates, D; Gerhardt, S; Gray, T; Kallman, J; Kaye, S; LeBlanc, B; Majeski, R; Maingi, R; Mansfield, D; Menard, J; Mueller, D; Ono, M; Paul, S; Raman, R; Roquemore, A L; Ross, P W; Sabbagh, S; Schneider, H; Skinner, S H; Soukhanovskii, V; Stevenson, T; Stotler, D; Timberlake, J; Zakharov, L; Ahn, J; Allain, J P; Wampler, W R

2009-01-08T23:59:59.000Z

323

Plasma Performance Improvements with Liquid Lithium Limiters in CDX-U  

SciTech Connect (OSTI)

The use of flowing liquid lithium as a first wall for a reactor has potentially attractive physics and engineering features. The Current Drive experiment-Upgrade (CDX-U) at the Princeton Plasma Physics Laboratory has begun experiments with a fully toroidal liquid lithium limiter. CDX-U is a compact [R = 34 cm, a = 22 cm, Btoroidal = 2 kG, IP =100 kA, T(subscript)e(0) {approx} 100 eV, n(subscript)e(0) {approx} 5 x 10{sup 19} m-3] short-pulse (<25 msec) spherical tokamak with extensive diagnostics. The limiter, which consists of a shallow circular stainless steel tray of radius 34 cm and width 10 cm, can be filled with lithium to a depth of a few millimeters, and forms the lower limiting surface for the discharge. Heating elements beneath the tray are used to liquefy the lithium prior to the experiment. The total area of the tray is approximately 2000 cm{sup 2}. The tokamak edge plasma, when operated in contact with the lithium-filled tray, shows evidence of reduced impurities and recycling. The reduction in re cycling and impurities is largest when the lithium is liquefied by heating to 250 degrees Celsius. Discharges which are limited by the liquid lithium tray show evidence of performance enhancement. Radiated power is reduced and there is spectroscopic evidence for increases in the core electron temperature. Furthermore, the use of a liquid lithium limiter reduces the need for conditioning discharges prior to high current operation. The future development path for liquid lithium limiter systems in CDX-U is also discussed.

R. Majeski; M. Boaz; D. Hoffman; B. Jones; R. Kaita; H. Kugel; T. Munsat; J. Spaleta; V. Soukhanovskii; J. Timberlake; L. Zakharov; G. Antar; R. Doerner; S. Luckhardt; R.W. Conn; M. Finkenthal; D. Stutman; R. Maingi; and M. Ulrickson

2002-07-12T23:59:59.000Z

324

Plasma Performance Improvement with Lithium-Coated Plasma-Facing Components in NSTX  

SciTech Connect (OSTI)

Lithium as a plasma-facing material has many attractive features, including a reduction in the recycling of hydrogenic species and the potential for withstanding high heat and neutron fluxes in fusion reactors. Recent NSTX experiments have shown, for the first time, significant and recurring benefits of lithium coatings on plasma-facing components (PFC's) to the performance of divertor plasmas in both L- and H- mode confinement regimes heated by high-power neutral beams. They included decreases in the plasma density and inductive flux consumption, and increases in the electron temperature, ion temperature, energy confinement time, and DD neutron rate. Extended periods of MHD quiescence were also achieved, and measurements of the visible emission from the lower divertor showed a reduction in the deuterium, carbon, and oxygen line emission. Other salient results with lithium evaporation included a broadening of the electron temperature profile, and changes in edge density gradients that benefited electron Bernstein wave coupling. There was also a reduction in ELM frequency and amplitude, followed by a period of complete ELM suppression. In general, it was observed that both the best and the average confinement occurred after lithium deposition and that the increase in WMHD occurs mostly through an increase in We. In addition, a liquid lithium divertor (LLD) is being installed on NSTX this year. As the first fully-toroidal liquid metal divertor target, experiments with the LLD can provide insight into the behavior of metallic ITER PFC's should they liquefy during high-power divertor tokamak operations. The NSTX lithium coating and LLD experiments are important near-term steps in demonstrating the potential of liquid lithium as a solution to the first-wall problem for both magnetic and inertial fusion reactors.

Kaita, R., et. al.

2008-09-29T23:59:59.000Z

325

Multi-Metric Sustainability Analysis  

SciTech Connect (OSTI)

A readily accessible framework that allows for evaluating impacts and comparing tradeoffs among factors in energy policy, expansion planning, and investment decision making is lacking. Recognizing this, the Joint Institute for Strategic Energy Analysis (JISEA) funded an exploration of multi-metric sustainability analysis (MMSA) to provide energy decision makers with a means to make more comprehensive comparisons of energy technologies. The resulting MMSA tool lets decision makers simultaneously compare technologies and potential deployment locations.

Cowlin, S.; Heimiller, D.; Macknick, J.; Mann, M.; Pless, J.; Munoz, D.

2014-12-01T23:59:59.000Z

326

Performance improvement of CdS/Cu(In,Ga)Se2 solar cells after rapid thermal annealing  

Science Journals Connector (OSTI)

In this paper, we investigated the effect of rapid thermal annealing (RTA) on solar cell performance. An opto-electric conversion efficiency of 11.75% (Voc = 0.64 V, Jsc = 25.88 mA/cm2, FF=72.08%) was obtained under AM 1.5G when the cell was annealed at 300 ?C for 30 s. The annealed solar cell showed an average absolute efficiency 1.5% higher than that of the as-deposited one. For the microstructure analysis and the physical phase confirmation, X-ray diffraction (XRD), Raman spectra, front surface reflection (FSR), internal quantum efficiency (IQE), and X-ray photoelectron spectroscopy (XPS) were respectively applied to distinguish the causes inducing the efficiency variation. All experimental results implied that the RTA eliminated recombination centers at the p?n junction, reduced the surface optical losses, enhanced the blue response of the CdS buffer layer, and improved the ohmic contact between Mo and Cu(In, Ga)Se2 (CIGS) layers. This leaded to the improved performance of CIGS solar cell.

Chen Dong-Sheng (???); Yang Jie (? ?); Xu Fei (? ?); Zhou Ping-Hua (???); Du Hui-Wei (???); Shi Jian-Wei (???); Yu Zheng-Shan (???); Zhang Yu-Hong (???); Brian Bartholomeusz; Ma Zhong-Quan (???)

2013-01-01T23:59:59.000Z

327

NREL Evaluates the Thermal Performance of Uninsulated Walls to Improve the Accuracy of Building Energy Simulation Tools (Fact Sheet)  

SciTech Connect (OSTI)

This technical highlight describes NREL research to develop models of uninsulated wall assemblies that help to improve the accuracy of building energy simulation tools when modeling potential energy savings in older homes. Researchers at the National Renewable Energy Laboratory (NREL) have developed models for evaluating the thermal performance of walls in existing homes that will improve the accuracy of building energy simulation tools when predicting potential energy savings of existing homes. Uninsulated walls are typical in older homes where the wall cavities were not insulated during construction or where the insulating material has settled. Accurate calculation of heat transfer through building enclosures will help determine the benefit of energy efficiency upgrades in order to reduce energy consumption in older American homes. NREL performed detailed computational fluid dynamics (CFD) analysis to quantify the energy loss/gain through the walls and to visualize different airflow regimes within the uninsulated cavities. The effects of ambient outdoor temperature, radiative properties of building materials, and insulation level were investigated. The study showed that multi-dimensional airflows occur in walls with uninsulated cavities and that the thermal resistance is a function of the outdoor temperature - an effect not accounted for in existing building energy simulation tools. The study quantified the difference between CFD prediction and the approach currently used in building energy simulation tools over a wide range of conditions. For example, researchers found that CFD predicted lower heating loads and slightly higher cooling loads. Implementation of CFD results into building energy simulation tools such as DOE2 and EnergyPlus will likely reduce the predicted heating load of homes. Researchers also determined that a small air gap in a partially insulated cavity can lead to a significant reduction in thermal resistance. For instance, a 4-in. tall air gap (Figure 1a) led to a 15% reduction in resistance. Similarly, a 2-ft tall air gap (Figure 1c) led to 54% reduction in thermal resistance. NREL researchers plan to extend this study to include additional wall configurations, and also to evaluate the performance of attic spaces with different insulation levels. NREL's objective is to address each potential issue that leads to inaccuracies in building energy simulation tools to improve the predictions.

Not Available

2012-01-01T23:59:59.000Z

328

ESTABLISHMENT OF AN INDUSTRY-DRIVEN CONSORTIUM FOCUSED ON IMPROVING THE PRODUCTION PERFORMANCE OF DOMESTIC STRIPPER WELLS  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy, National Energy Technology Laboratory will establish, promote, and manage a national industry-driven Stripper Well Consortium (SWC) that will be focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas industries and trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the first quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) hosting the SWC spring proposal meeting in Golden Colorado, (2) planning of the upcoming SWC fall technology transfer meetings, and (3) recruiting the SWC base membership.

Joel L. Morrison

2004-12-28T23:59:59.000Z

329

ESTABLISHMENT OF AN INDUSTRY-DRIVEN CONSORTIUM FOCUSED ON IMPROVING THE PRODUCTION PERFORMANCE OF DOMESTIC STRIPPER WELLS  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy, National Energy Technology Laboratory will establish, promote, and manage a national industry-driven Stripper Well Consortium (SWC) that will be focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas industries and trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the fifteenth quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) hosting the SWC spring proposal meeting in Golden Colorado, (2) planning of the upcoming SWC fall technology transfer meetings, and (3) recruiting the SWC base membership.

Joel L. Morrison

2004-12-23T23:59:59.000Z

330

ESTABLISHMENT OF AN INDUSTRY-DRIVEN CONSORTIUM FOCUSED ON IMPROVING THE PRODUCTION PERFORMANCE OF DOMESTIC STRIPPER WELLS  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy, National Energy Technology Laboratory will establish, promote, and manage a national industry-driven Stripper Well Consortium (SWC) that will be focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas industries and trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the ninth quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) organizing and hosting two fall technology transfer meetings, (2) SWC membership class expansion, and (3) planning the SWC 2003 Spring meeting. In addition, a literature search that focuses on the use of lasers, microwaves, and acoustics for potential stripper well applications continued.

Joel L. Morrison

2003-04-08T23:59:59.000Z

331

Thin Metal Oxide Films to Modify a Window Layer in CdTe-Based Solar Cells for Improved Performance  

SciTech Connect (OSTI)

We report on CdS/CdTe photovoltaic devices that contain a thin Ta2O5 film deposited onto the CdS window layer by sputtering. We show that for thicknesses below 5 nm, Ta2O5 films between CdS and CdTe positively affect the solar cell performance, improving JSC, VOC, and the cell power conversion efficiency despite the insulating nature of the interlayer material. Using the Ta2O5 interlayer, a VOC gain of over 100 mV was demonstrated compared to a CdTe/CdS baseline. Application of a 1nm Ta2O5 interlayer enabled the fabrication of CdTe solar cells with extremely thin (less than 30 nm) CdS window layers. The efficiency of these cells exceeded that of a base line cell with 95 nm of CdS.

Lemmon, John P.; Polikarpov, Evgueni; Bennett, Wendy D.; Kovarik, Libor

2012-05-05T23:59:59.000Z

332

Comparing Resource Adequacy Metrics: Preprint  

SciTech Connect (OSTI)

As the penetration of variable generation (wind and solar) increases around the world, there is an accompanying growing interest and importance in accurately assessing the contribution that these resources can make toward planning reserve. This contribution, also known as the capacity credit or capacity value of the resource, is best quantified by using a probabilistic measure of overall resource adequacy. In recognizing the variable nature of these renewable resources, there has been interest in exploring the use of reliability metrics other than loss of load expectation. In this paper, we undertake some comparisons using data from the Western Electricity Coordinating Council in the western United States.

Ibanez, E.; Milligan, M.

2014-09-01T23:59:59.000Z

333

Establishment of an Industry-Driven Consortium Focused on Improving the Production Performance of Domestic Stripper Wells  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy (DOE), National Energy Technology Laboratory (NETL) established a national industry-driven Stripper Well Consortium (SWC) that is focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas producers, trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the ninth quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) Develop and process subcontract awards for the nine projects selected at the 2006 Spring meeting; (2) Continue distribution of the DVD on ''Independent Oil: Rediscovering American's Forgotten Wells''; (3) Improving communications; (4) New member recruitment; (5) Identify SWC projects to be showcased for booth exhibition, preparing an exhibit, promoting and marketing for the 2006 Oklahoma Oil and Gas Trade Expo organized by the OK Marginal Well Commission, Oklahoma City, OK; and (6) Identify projects and draft agenda for the fall technical workshop in Pittsburgh, PA.

Joel L. Morrison; Sharon L. Elder

2006-06-30T23:59:59.000Z

334

Wildlife toxicity extrapolations: Dose metric  

SciTech Connect (OSTI)

Ecotoxicological assessments must rely on the extrapolation of toxicity data from a few indicator species to many species of concern. Data are available from laboratory studies (e.g., quail, mallards, rainbow trout, fathead minnow) and some planned or serendipitous field studies of a broader, but by no means comprehensive, suite of species. Yet all ecological risk assessments begin with an estimate of risk based on information gleaned from the literature. One is then confronted with the necessity of extrapolating toxicity information from a limited number of indicator species to all organisms of interest. This is a particularly acute problem when trying to estimate hazards to wildlife in terrestrial systems as there is an extreme paucity of data for most chemicals in all but a handful of species. This section continues the debate by six panelists of the ``correct`` approach for determining wildlife toxicity thresholds by examining which dose metric to use for threshold determination and interspecific extrapolation, Since wild animals are exposed to environmental contaminants primarily through ingestion, should threshold values be expressed as amount of chemical in the diet (e.g., ppm) or as a body weight-adjusted dose (mg/kg/day)? Which of these two approaches is most relevant for ecological risk assessment decision making? Which is best for interspecific extrapolations? Converting from one metric to the other can compound uncertainty if the actual consumption rates of a species is unknown. How should this be dealt with? Is it of sufficient magnitude to be of concern?

Fairbrother, A. [Ecological Planning and Toxicology, Inc., Corvallis, OR (United States); Berg, M. van den [Univ. of Utrecht (Netherlands). Research Inst. of Toxicology

1995-12-31T23:59:59.000Z

335

Gravitational lensing in metric theories of gravity  

Science Journals Connector (OSTI)

Gravitational lensing in metric theories of gravity is discussed. I introduce a generalized approximate metric element, inclusive of both post-post-Newtonian contributions and a gravitomagnetic field. Following Fermat’s principle and standard hypotheses, I derive the time delay function and deflection angle caused by an isolated mass distribution. Several astrophysical systems are considered. In most of the cases, the gravitomagnetic correction offers the best perspectives for an observational detection. Actual measurements distinguish only marginally different metric theories from each other.

Mauro Sereno

2003-03-24T23:59:59.000Z

336

Defining a Standard Metric for Electricity Savings  

E-Print Network [OSTI]

1991. The Potential for Electricity Efficiency Improvementswww.eia.doe.gov/cneaf/electricity/page/eia860.html>. FigureA STANDARD METRIC FOR ELECTRICITY SAVINGS Jonathan Koomey*,

Koomey, Jonathan

2009-01-01T23:59:59.000Z

337

Experiences with Software Quality Metrics in the EMI middlewate  

E-Print Network [OSTI]

The EMI Quality Model has been created to define, and later review, the EMI (European Middleware Initiative) software product and process quality. A quality model is based on a set of software quality metrics and helps to set clear and measurable quality goals for software products and processes. The EMI Quality Model follows the ISO/IEC 9126 Software Engineering – Product Quality to identify a set of characteristics that need to be present in the EMI software. For each software characteristic, such as portability, maintainability, compliance, etc, a set of associated metrics and KPIs (Key Performance Indicators) are identified. This article presents how the EMI Quality Model and the EMI Metrics have been defined in the context of the software quality assurance activities carried out in EMI. It also describes the measurement plan and presents some of the metrics reports that have been produced for the EMI releases and updates. It also covers which tools and techniques can be used by any software project to ...

Alandes, M; Meneses, D; Pucciani, G

2012-01-01T23:59:59.000Z

338

EXTREMAL METRIC FOR THE FIRST EIGENVALUE ON A KLEIN BOTTLE  

E-Print Network [OSTI]

EXTREMAL METRIC FOR THE FIRST EIGENVALUE ON A KLEIN BOTTLE DMITRY JAKOBSON, NIKOLAI NADIRASHVILI extremal metrics. The only known extremal metrics are a round sphere, a standard projective plane, a Clifford torus and an equilateral torus. We construct an extremal metric on a Klein bottle. It is a metric

Leclercq, Remi

339

EXTREMAL METRIC FOR THE FIRST EIGENVALUE ON A KLEIN BOTTLE  

E-Print Network [OSTI]

EXTREMAL METRIC FOR THE FIRST EIGENVALUE ON A KLEIN BOTTLE DMITRY JAKOBSON, NIKOLAI NADIRASHVILI extremal metrics. The only known extremal metrics are a round sphere, a standard projective plane, a Cli#11;ord torus and an equilateral torus. We construct an extremal metric on a Klein bottle. It is a metric

Jakobson, Dmitry

340

Fabrication process changes for performance improvement of an RF MEMS resonator : conformable contact lithography, Moiré alignment, and chlorine dry etching  

E-Print Network [OSTI]

This thesis presents fabrication process improvements for a RF MEMS resonator for the purpose of improving the quality factor (Q) and extending the frequency range. The process changes include the use of conformable contact ...

Sakai, Mark

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Channel Coding Diversity with Mismatched Decoding Metrics  

E-Print Network [OSTI]

1 Channel Coding Diversity with Mismatched Decoding Metrics Trung Thanh Nguyen, Student Member diversity with general decoding metrics in terms of the gener- alized mutual information (GMI). We show of weather-induced fading scenarios where the quality of a single (either FSO or RF) channel could

Lampe, Lutz

342

ESTABLISHMENT OF AN INDUSTRY-DRIVEN CONSORTIUM FOCUSED ON IMPROVING THE PRODUCTION PERFORMANCE OF DOMESTIC STRIPPER WELLS  

SciTech Connect (OSTI)

The Pennsylvania State University, under contract to the U.S. Department of Energy, National Energy Technology Laboratory will establish, promote, and manage a national industry-driven Stripper Well Consortium (SWC) that will be focused on improving the production performance of domestic petroleum and/or natural gas stripper wells. The consortium creates a partnership with the U.S. petroleum and natural gas industries and trade associations, state funding agencies, academia, and the National Energy Technology Laboratory. This report serves as the tenth quarterly technical progress report for the SWC. Key activities for this reporting period include: (1) release of the 2003 request-for-proposal (RFP), (2) planning the spring SWC meeting in Pearl River New York, and (3) tentatively plan the SWC 2003 fall technology transfer meetings. During this reporting period, the efforts were focused primarily on the organizing and hosting the fall technology transfer meetings. Simultaneously, administrative issues such as modifying the SWC Constitution and By-Laws and creating a block membership tier to promote further industrial involvement were areas of concentration. The SWC is poised to enter its third year with a growing, diversifying membership.

Joel L. Morrison

2004-05-10T23:59:59.000Z

343

Improvements in high-field superconducting performance of V/sub 3/Ga by a two-stage reaction process  

SciTech Connect (OSTI)

Effects of the heat treatment condition on the high-field superconducting performances of the surface diffusion processed V/sub 3/Ga have been investigated. I-italic/sub c-italic/ at fields near H-italic/sub c-italic//sub 2/ depends mainly on the layer thickness and H-italic/sub c-italic//sub 2/ of V/sub 3/Ga. The two-stage reaction process, which consists of the first reaction at the higher temperature to form a thick enough V/sub 3/Ga layer and the subsequent second reaction at the lower temperature to achieve high values of T-italic/sub c-italic/ and H-italic/sub c-italic//sub 2/, has been found to improve appreciably the I-italic/sub c-italic/ of SDP V/sub 3/Ga in high magnetic fields. Overall J-italic/sub c-italic/ (including copper stabilizer) of about 2.0 x 10/sup 4/ A/cm/sup 2/ at 19 T has been obtained for a --100-m-long V/sub 3/Ga tape.

Takeuchi, T.; Iijima, Y.; Inoue, K.; Tachikawa, K.

1986-08-01T23:59:59.000Z

344

State Energy Program Goals, Metrics, and History | Department...  

Office of Environmental Management (EM)

State Energy Program Goals, Metrics, and History State Energy Program Goals, Metrics, and History The mission of the State Energy Program (SEP) is to provide leadership to maximize...

345

Custom Reporting: Full List of Available Information and Metrics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Custom Reporting: Custom Reporting: Full List of Available Information and Metrics Cost Performance Metrics Units Energy Cost Dollars Energy Cost Intensity Dollars National Median Energy Cost Dollars Total Water Cost (All Water Types) Dollars Indoor Water Cost (All Water Types) Dollars Indoor Water Cost Intensity (All Water Types) Dollars/ft2 Outdoor Water Cost (All Water Types) Dollars Investment in Energy Projects, Cumulatve Dollars Investment in Energy Projects, Cumulatve Dollars/ft2 Water/Wastewater Investment in Energy Projects, Cumulative Dollars/GPD Estimated Savings from Energy Projects, Cumulative Dollars Estimated Savings from Energy Projects, Cumulative Dollars/ft2 Water/Wastewater Estimated Savings from Energy Projects, Cumulative Dollars/GPD Electricity (Grid Purchase) Cost Dollars

346

Geodesic completeness of diagonal $G_2$ metrics  

E-Print Network [OSTI]

In this talk a sufficient condition for a diagonal orthogonally transitive cylindrical $G_2$ metric to be geodesically complete is given. The condition is weak enough to comprise all known diagonal perfect fluid cosmological models that are non-singular.

L. Fernández-Jambrina

2009-04-10T23:59:59.000Z

347

Spatial Error Metrics for Oceanographic Model Verification  

Science Journals Connector (OSTI)

A common problem with modern numerical oceanographic models is spatial displacement, including misplacement and misshapenness of ocean circulation features. Traditional error metrics, such as least squares methods, are ineffective in many such ...

Sean B. Ziegeler; James D. Dykes; Jay F. Shriver

2012-02-01T23:59:59.000Z

348

CS 537: Software Metrics Students will  

E-Print Network [OSTI]

measurements. Demonstrate the knowledge of software metrics. Demonstrate the knowledge of using software the knowledge of statistical analysis in software measurement. Demonstrate the knowledge of developing and calibrating predication systems. Demonstrate the knowledge of developing and maintaining a measurement program

Heller, Barbara

349

Microsoft Word - QER Resilience Metrics - Technical Workshp ...  

Energy Savers [EERE]

on developing a long-term roadmap on resilience metrics for electric power, gas, and oil infrastructure and their proposed uses. Location The session will be held on be held...

350

Clean Cities Annual Metrics Report 2009 (Revised)  

SciTech Connect (OSTI)

Document provides Clean Cities coalition metrics about the use of alternative fuels; the deployment of alternative fuel vehicles, hybrid electric vehicles (HEVs), and idle reduction initiatives; fuel economy activities; and programs to reduce vehicle miles driven.

Johnson, C.

2011-08-01T23:59:59.000Z

351

Generalization Of The Gross-Perry Metrics  

E-Print Network [OSTI]

A class of SO(n+1) symmetric solutions of the (N+n+1)-dimensional Einstein equations is found. It contains 5-dimensional metrics of Gross and Perry and Millward.

M. Jakimowicz; J. Tafel

2008-10-10T23:59:59.000Z

352

Physical metric and the nature of gravity  

E-Print Network [OSTI]

A physical metric is defined as one which gives a measurable speed of light throughout the whole space time continuum. It will be shown that a metric which satisfies the condition that speed of light on the spherical direction is that in a vacuum gives a correct result. All the metric functions thus obtained are positive definite and exhibits a repulsive force at short distances. The horizon in the sense of vanishing of the speed of light still exists in the radial direction. It is located at 2.60 times of the Schwarzschild radius. This radius corresponds to the size of a black hole, as well as the photon sphere radius. The metric can be used to calculate general relativistic predictions in higher order for any process.

Yukio Tomozawa

2014-05-01T23:59:59.000Z

353

Physical metric and the nature of gravity  

E-Print Network [OSTI]

A physical metric is defined as one which gives a measurable speed of light throughout the whole space time continuum. It will be shown that a metric which satisfies the condition that speed of light on the spherical direction is that in a vacuum gives a correct result. All the metric functions thus obtained are positive definite and exhibits a repulsive force at short distances. The horizon in the sense of vanishing of the speed of light still exists in the radial direction. It is located at 2.60 times of the Schwarzschild radius. This radius corresponds to the size of a black hole, as well as the photon sphere radius. The metric can be used to calculate general relativistic predictions in higher order for any process.

Tomozawa, Yukio

2014-01-01T23:59:59.000Z

354

One-Axis Trackers -- Improved Reliability, Durability, Performance, and Cost Reduction; Final Subcontract Technical Status Report, 2 May 2006 - 31 August 2007  

SciTech Connect (OSTI)

The overall objective of this subcontract is to reduce the total cost of electricity generated by single-axis tracking solar energy systems for utility and other large-scale commercial applications by improving performance and reliability and by reducing installation time, cost, and environmental impact.

Shingleton, J.

2008-02-01T23:59:59.000Z

355

Get Help for Free! Take advantage of these Stony Brook departments that offer trained staff with proven records to help YOU improve your academic performance!  

E-Print Network [OSTI]

Get Help for Free! Take advantage of these Stony Brook departments that offer trained staff with proven records to help YOU improve your academic performance! Services Courses Type of Help Location and Approximate Hours* AMS Help Room AMS 102, 151, 161, 201,210 Walk-in questions 010 Harriman, Mon-Fri 9AM­5PM

Ge, Qiaode Jeff

356

Improving Vortex Generators to Enhance the Performance of Air-Cooled Condensers in a Geothermal Power Plant  

SciTech Connect (OSTI)

This report summarizes work at the Idaho National Laboratory to develop strategies to enhance air-side heat transfer in geothermal air-cooled condensers such that it should not significantly increase pressure drop and parasitic fan pumping power. The work was sponsored by the U.S. Department of Energy, NEDO (New Energy and Industrial Technology Development Organization) of Japan, Yokohama National University, and the Indian Institute of Technology, Kanpur, India. A combined experimental and numerical investigation was performed to investigate heat transfer enhancement techniques that may be applicable to largescale air-cooled condensers such as those used in geothermal power applications. A transient heat transfer visualization and measurement technique was employed in order to obtain detailed distributions of local heat transfer coefficients on model fin surfaces. Pressure drop measurements were obtained for a variety of tube and winglet configurations using a single-channel flow apparatus that included four tube rows in a staggered array. Heat transfer and pressure drop measurements were also acquired in a separate multiple-tube row apparatus in the Single Blow Test Facility. In addition, a numerical modeling technique was developed to predict local and average heat transfer for these low-Reynolds number flows, with and without winglets. Representative experimental and numerical results were obtained that reveal quantitative details of local finsurface heat transfer in the vicinity of a circular tube with a single delta winglet pair downstream of the cylinder. Heat transfer and pressure-drop results were obtained for flow Reynolds numbers based on channel height and mean flow velocity ranging from 700 to 6500. The winglets were of triangular (delta) shape with a 1:2 or 1:3 height/length aspect ratio and a height equal to 90% of the channel height. Overall mean fin-surface heat transfer results indicate a significant level of heat transfer enhancement (in terms of Colburn j-factor) associated with deployment of the winglets with circular as well as oval tubes. In general, toe-in (common flow up) type winglets appear to have better performance than the toe-out (common flow down) type winglets. Comparisons of heat transfer and pressure drop results for the elliptical tube versus a circular tube with and without winglets are provided. During the course of their independent research, all of the researchers have established that about 10 to 30% enhancement in Colburn j-factor is expected. However, actual increase in heat transfer rate from a heat exchanger employing finned tubes with winglets may be smaller, perhaps on the order of 2 to 5%. It is also concluded that for any specific application, more full-size experimentation is needed to optimize the winglet design for a specific heat exchanger application. If in place of a circular tube, an oval tube can be economically used in a bundle, it is expected that the pressure drop across the tube bundle with the application of vortex generators (winglets) will be similar to that in a conventional circular tube bundle. It is hoped that the results of this research will demonstrate the benefits of applying vortex generators (winglets) on the fins to improve the heat transfer from the air-side of the tube bundle.

Manohar S. Sohal

2005-09-01T23:59:59.000Z

357

Microsoft Word - DOE_ANNUAL_METRICS_2009Q3.docx  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

14404 14404 Third Quarter 2009 Modeling Program Metric: Coupled model comparison with observations using improved dynamics at coarse resolution Quantifying the impact of a finite volume dynamical core in CCSM3 on simulated precipitation over major catchment areas July 2009 Peter J. Gleckler and Karl E. Taylor Lawrence Livermore National Laboratory Livermore, CA Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research 
 2
 Disclaimer This document was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor Lawrence Livermore National Security, LLC, nor any of their employees makes any warranty,

358

Improving the Electrode Performance of Ge through Ge@C Core–Shell Nanoparticles and Graphene Networks  

Science Journals Connector (OSTI)

Germanium is a promising high-capacity anode material for lithium ion batteries, but it usually exhibits poor cycling stability because of its huge volume variation during the lithium uptake and release process. A double protection strategy to improve the ...

Ding-Jiang Xue; Sen Xin; Yang Yan; Ke-Cheng Jiang; Ya-Xia Yin; Yu-Guo Guo; Li-Jun Wan

2012-01-17T23:59:59.000Z

359

Dal-Tile: Optimized Compressed Air System Improves Performance and Saves Energy at a Tile Manufacturing Plant  

SciTech Connect (OSTI)

This DOE Industrial Technologies Program case study describes the significant energy and costs savings resulting from compressed air system improvements at Dal-Tile, a Texas tile manufacturing plant.

Not Available

2005-08-01T23:59:59.000Z

360

Performance improvement of combined cycle power plant based on the optimization of the bottom cycle and heat recuperation  

Science Journals Connector (OSTI)

Many F class gas turbine combined cycle (GTCC) power plants are built in ... the efficiency improvement of GTCC plant. A combined cycle with three-pressure reheat heat recovery steam ... HRSG inlet gas temperatur...

Wenguo Xiang; Yingying Chen

2007-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

On Metamodel-Based Design of Software Metrics  

Science Journals Connector (OSTI)

Metric values can be used in order to compare and evaluate software entities, find defects, and predict quality. For some programming languages there are much more known metrics than for others. It would be helpful, if one could use existing metrics ... Keywords: Data model, Measure, Metamodel, Metric, Object-relational database, Reusability, UML

Erki Eessaar

2008-05-01T23:59:59.000Z

362

Assessment of the fuel magnetisation capacity to improve fuel economy and enhance performance in a four-stroke SI engine  

Science Journals Connector (OSTI)

In this paper, we investigate the effect of fuel magnetisation on the overall performance of a four-stroke Spark Ignition (SI) engine. To achieve this objective, we have designed a set of experiments using the Mitsubishi 1.5 L (4G15) SI engine. Each experiment is performed in two phases: with and without the fuel magnetisation. The collected data was analysed to assess the overall performance of the engine at several operating conditions. Our study shows that fuel magnetiser can enhance the overall performance of a typical SI engine. However, the enhancement greatly depends on the operating condition of the engine. Specifically, the best-observed performance enhancement in the tested engine owing to the usage of the fuel magnetiser was to reduce the Brake Specific Fuel Consumption (BSFC) by 9% increase the Brake Power (BP) by 9% and boost the brake thermal efficiency (?b) from 29% to 31%.

Raed Kafafy; Wajdi Bin Ali; Waleed Faris

2012-01-01T23:59:59.000Z

363

Annex A Metrics for the Smart Grid System Report  

Broader source: Energy.gov (indexed) [DOE]

Annex A Annex A Metrics for the Smart Grid System Report A.iii Table of Contents Introduction ........................................................................................................................................... A.1 Metric #1: The Fraction of Customers and Total Load Served by Real-Time Pricing, Critical Peak Pricing, and Time-of-Use Pricing ........................................................................................ A.2 Metric #2: Real-Time System Operations Data Sharing ...................................................................... A.9 Metric #3: Standard Distributed Resource Connection Policies .......................................................... A.18 Metric #4: Regulatory Recovery for Smart Grid Investments ............................................................. A.23

364

Reducing Heavy-Haul Railcar Maintenance Costs and Improving Terminal Performance Using Technology: A Lean Production Approach  

E-Print Network [OSTI]

operations. This research applies Lean Manufacturing methods to the railcar maintenance process industries to improve production and manufacturing efficiency. In the 2000s, various production management with terminal dwell [3,4]. In addition, Logan suggested that for every 15% reduction in systemwide average

Illinois at Urbana-Champaign, University of

365

Enhancing the Benefit of the Chemical Mixture Methodology: A Report on Methodology Testing and Potential Approaches for Improving Performance  

SciTech Connect (OSTI)

Extensive testing shows that the current version of the Chemical Mixture Methodology (CMM) is meeting its intended mission to provide conservative estimates of the health effects from exposure to airborne chemical mixtures. However, the current version of the CMM could benefit from several enhancements that are designed to improve its application of Health Code Numbers (HCNs) and employ weighting factors to reduce over conservatism.

Yu, Xiao-Ying; Yao, Juan; He, Hua; Glantz, Clifford S.; Booth, Alexander E.

2012-01-01T23:59:59.000Z

366

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 19, NO. 7, JULY 2001 1385 Improving Battery Performance by Using Traffic  

E-Print Network [OSTI]

battery management techniques that exploit the charge recovery effect inherent to many secondary storage efficient protocols. The goal is to increase the amount of energy that can be drained from a battery, the soIEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 19, NO. 7, JULY 2001 1385 Improving Battery

367

The potential role of new technology for enhanced safety and performance of nuclear power plants through improved service maintenance  

E-Print Network [OSTI]

Refinements in the safety and performance of nuclear power plants must be made to maintain public confidence and ensure competitiveness with other power sources. The aircraft industry, US Navy, and other programs have ...

Achorn, Ted Glen

1991-01-01T23:59:59.000Z

368

Improving Performance on Data-Intensive Applications Using a Load Balancing Methodology Based on Divisible Load Theory  

Science Journals Connector (OSTI)

Data-intensive applications are those that explore, query ... , and, in general, process very large data sets. Generally, these applications can be ... implementations show severe performance problems mainly due ...

Claudia Rosas; Anna Sikora; Josep Jorba…

2014-02-01T23:59:59.000Z

369

Improvement of CIGS thin-film solar cell performance by optimization of Zn(O,S) buffer layer parameters  

Science Journals Connector (OSTI)

The effects of Zn(O,S) buffer layer parameters on CuInGaSe (CIGS) cell performance are investigated using a physically based solar cell model. The key issue for CIGS solar cells is to remove destructive effec...

Samaneh Sharbati; Sayyed Hossein Keshmiri; J. Tyler McGoffin…

2014-10-01T23:59:59.000Z

370

Innovative Characterization of Amorphous and Thin-Film Silicon for Improved Module Performance: 28 April 2005 - 15 September 2008  

SciTech Connect (OSTI)

This report focuses on (1) characterizing nc-Si:H from United Solar; (2) studying Si,Ge:H alloys deposited by HWCVD; and (3) characterizing CIGS films and relating to cell performance parameters.

Cohen, J. D.

2009-12-01T23:59:59.000Z

371

Improving the Field Performance of Natural Gas Furnaces, Chicago, Illinois (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)  

Broader source: Energy.gov (indexed) [DOE]

the Field Performance the Field Performance of Natural Gas Furnaces Chicago, Illinois PROJECT INFORMATION Project Name: Improving Gas Furnace Performance-A Field and Lab Study at End of Life Location: Chicago, IL Partnership for Advanced Residential Retrofit www.gastechnology.org Building Component: Natural Gas Furnaces Application: New and/or retrofit; Single and/or multifamily Year Tested: 2012/2013 Applicable Climate Zone(s): All or specify which ones PERFORMANCE DATA Cost of Energy Efficiency Measure (including labor): $250 for adjustments Projected Energy Savings: 6.4% heating savings Projected Energy Cost Savings: $100/year climate-dependent Gas furnaces can successfully operate in the field for 20 years or longer with

372

Wall Design Redundancy for Improving the Moisture Performance of Building Cladding Systems in Hot-Humid Climates  

E-Print Network [OSTI]

by the NAHB Research Center. Instead, these inspections were performed with field observations and photographic recordings. Review of the Literature An extensive review of the literature on moisture problems in building envelopes was also conducted... by the NAHB Research Center. Instead, these inspections were performed with field observations and photographic recordings. Review of the Literature An extensive review of the literature on moisture problems in building envelopes was also conducted...

Graham, C. W.

2000-01-01T23:59:59.000Z

373

Improved thermoelectric performance in polycrystalline p -type Bi 2 Te 3 via an alkali metal salt hydrothermal nanocoating treatment approach  

Science Journals Connector (OSTI)

We report herein a proof-of-principle study of grain boundary engineering in the polycrystalline p -type Bi 2 Te 3 system. Utilizing the recently developed hydrothermal nanocoating treatment technique we fabricated an alkali-metal(s)-containing surface layer on the p -Bi 2 Te 3 bulk grain which in turn became part of the grain boundary upon hot pressing densification. Compared to the untreated bulk reference the dimensionless figure of merit Z T has been improved by ? 30 % in the Na-treated sample chiefly due to the reduced thermal conductivity and ? 38 % in the Rb-treated sample mainly owing to the improved power factor. The grain boundary phase provides a new avenue by which one can potentially decouple the otherwise inter-related electrical resistivity Seebeck coefficient and thermal conductivity within one thermoelectric material.

Xiaohua Ji; Jian He; Zhe Su; Nick Gothard; Terry M. Tritt

2008-01-01T23:59:59.000Z

374

Substation bus arrangement performance analysis program and metrics.  

E-Print Network [OSTI]

??During preliminary substation design, only minimal information is available to the designer. Substation bus arrangements have been defined in textbooks for their advantages and disadvantages.… (more)

Oneal, Trevor Martin

2011-01-01T23:59:59.000Z

375

New IEC Specifications Help Define Wind Plant Performance Reporting Metrics  

Broader source: Energy.gov [DOE]

The DOE Wind Program and Sandia National Laboratories have been working with the International Electrotechnical Commission (IEC) Committee on wind turbine availability to develop three specifications for IEC-61400-26—the standard that addresses wind turbine and wind plant availability.

376

Utilization of visual metrics to drive intended performance  

E-Print Network [OSTI]

In recent years the American industrial landscape has undergone tremendous change as companies have worked to adopt Lean practices. This transformation has been difficult, but necessary, as American companies work to remain ...

Wolbert, Daniel (Daniel Joseph)

2007-01-01T23:59:59.000Z

377

Improved Hydrogen Storage Performance of MgH2-LiAlH4 Composite by Addition of MnFe2O4  

E-Print Network [OSTI]

Improved Hydrogen Storage Performance of MgH2-LiAlH4 Composite by Addition of MnFe2O4 Qi Wan, Ping storage properties of MgH2-LiAlH4, prepared by ball milling, are studied for the first time. The hydrogen/L) densities are extremely eager for on-board hydrogen storage in fuel cell vehicles according to the U.S. DOE

Volinsky, Alex A.

378

An assessment of BWR (boiling water reactor) Mark-II containment challenges, failure modes, and potential improvements in performance  

SciTech Connect (OSTI)

This report assesses challenges to BWR Mark II containment integrity that could potentially arise from severe accidents. Also assessed are some potential improvements that could prevent core damage or containment failure, or could mitigate the consequences of such failure by reducing the release of fission products to the environment. These challenges and improvements are analyzed via a limited quantitative risk/benefit analysis of a generic BWR/4 reactor with Mark II containment. Point estimate frequencies of the dominant core damage sequences are obtained and simple containment event trees are constructed to evaluate the response of the containment to these severe accident sequences. The resulting containment release modes are then binned into source term release categories, which provide inputs to the consequence analysis. The output of the consequences analysis is used to construct an overall base case risk profile. Potential improvements and sensitivities are evaluated by modifying the event tree spilt fractions, thus generating a revised risk profile. Several important sensitivity cases are examined to evaluate the impact of phenomenological uncertainties on the final results. 75 refs., 25 figs., 65 tabs.

Kelly, D.L.; Jones, K.R.; Dallman, R.J. (EG and G Idaho, Inc., Idaho Falls, ID (USA)); Wagner, K.C. (Science Applications International Corp., Albuquerque, NM (USA))

1990-07-01T23:59:59.000Z

379

Flowing Liquid Crystal Simulating the Schwarzschild Metric  

E-Print Network [OSTI]

We show how to simulate the equatorial section of the Schwarzschild metric through a flowing liquid crystal in its nematic phase. Inside a liquid crystal in the nematic phase, a traveling light ray feels an effective metric, whose properties are linked to perpendicular and parallel refractive indexes, $n_o$ e $n_e$ respectively, of the rod-like molecule of the liquid crystal. As these indexes depend on the scalar order parameter of the liquid crystal, the Beris-Edwards hydrodynamic theory is used to connect the order parameter with the velocity of a liquid crystal flow at each point. This way we calculate a radial velocity profile that simulates the equatorial section of the Schwarzschild metric, in the region outside of Schwarzschild's radius, in the nematic phase of the liquid crystal. In our model, the higher flow velocity can be of the order of some meters per second.

Erms R. Pereira; Fernando Moraes

2010-11-21T23:59:59.000Z

380

Discussion for Metrics and Benefits Data Collection  

Broader source: Energy.gov (indexed) [DOE]

Metrics and Benefits Analysis for Metrics and Benefits Analysis for the ARRA Smart Grid Programs Joe Paladino Office of Electricity Delivery and Energy Reliability U.S. Department of Energy OE Electricity Advisory Committee Meeting March 10, 2011 140 ARRA-Funded Smart Grid Projects 1 Customer Systems Customer Systems Customer Systems Customer Systems SGIG/SGDP/RDSI Areas of Smart Grid Technology Deployment Customer Systems Advance Metering Infrastructure Electric Distribution Systems Electric Transmission Systems * Displays * Portals * Energy management * Direct load controls * Smart meters * Data management * Back office integration * Switches * Feeder optimization * Equipment monitoring * Energy Storage * Wide area monitoring and visualization * Synchrophasor Technology * Energy Storage Customer Systems Equipment Manufacturing

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

A theory of metrics with maximal acceleration  

E-Print Network [OSTI]

We present a geometric theory for spacetimes whose world lines associated with physical particles have an upper bound for the proper acceleration. After some fundamental remarks on the requirements that classical dynamics for point particles must hold good, the notion of generalized metric and a theory of maximal acceleration are introduced. A perturbative approach to metrics of maximal acceleration is discussed. Then several of their physical and kinematical properties are investigated. These include a discussion of the fundamental causal theory concepts and the introduction of the associated notions of Euclidean length and celerity function. Finally, we discuss the corresponding modification of the Einstein's mass-energy relation.

Ricardo Gallego Torromé

2014-03-06T23:59:59.000Z

382

A green synthesis of a layered titanate, potassium lithium titanate; lower temperature solid-state reaction and improved materials performance  

SciTech Connect (OSTI)

A layered titanate, potassium lithium titanate, with the size range from 0.1 to 30 µm was prepared to show the effects of the particle size on the materials performance. The potassium lithium titanate was prepared by solid-state reaction as reported previously, where the reaction temperature was varied. The reported temperature for the titanate preparation was higher than 800 °C, though 600 °C is good enough to obtain single-phase potassium lithium titanate. The lower temperature synthesis is cost effective and the product exhibit better performance as photocatalysts due to surface reactivity. - Graphical abstract: Finite particle of a layered titanate, potassium lithium titanate, was prepared by solid-state reaction at lower temperature to show modified materials performance. Display Omitted - Highlights: • Potassium lithium titanate was prepared by solid-state reaction. • Lower temperature reaction resulted in smaller sized particles of titanate. • 600 °C was good enough to obtain single phased potassium lithium titanate. • The product exhibited better performance as photocatalyst.

Ogawa, Makoto, E-mail: waseda.ogawa@gmail.com [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Department of Earth Sciences, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Morita, Masashi, E-mail: m-masashi@y.akane.waseda.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Igarashi, Shota, E-mail: uxei_yoshi_yoshi@yahoo.co.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Sato, Soh, E-mail: rookie_so_sleepy@yahoo.co.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan)

2013-10-15T23:59:59.000Z

383

Continuous Improvement of H-Mode Discharge Performance with Progressively Increasing Lithium Coatings in the National Spherical Torus Experiment  

SciTech Connect (OSTI)

Lithium wall coatings have been shown to reduce recycling, improve energy confinement, and suppress edge localized modes in the National Spherical Torus Experiment. Here, we show that these effects depend continuously on the amount of predischarge lithium evaporation.We observed a nearly monotonic reduction in recycling, decrease in electron transport, and modification of the edge profiles and stability with increasing lithium. These correlations challenge basic expectations, given that even the smallest coatings exceeded that needed for a nominal thickness of the order of the implantation range.

Maingi, Rajesh [ORNL; Kaye, S. [Princeton Plasma Physics Laboratory (PPPL); Skinner, C. H. [Princeton Plasma Physics Laboratory (PPPL); Boyle, D. P. [Princeton University; Canik, John [ORNL; Bell, M. G. [Princeton Plasma Physics Laboratory (PPPL); Bell, R. E. [Princeton Plasma Physics Laboratory (PPPL); Gray, Travis K [ORNL; Jaworski, M. A. [Princeton Plasma Physics Laboratory (PPPL); Kaita, R. [Princeton Plasma Physics Laboratory (PPPL); Kugel, H. W. [Princeton Plasma Physics Laboratory (PPPL); LaBlanc, B. P. [Princeton Plasma Physics Laboratory (PPPL); Mansfield, D.K. [Princeton Plasma Physics Laboratory (PPPL); Osborne, T. H. [General Atomics; Sabbagh, S. A. [Columbia University; Soukhanovskii, V. A. [Lawrence Livermore National Laboratory (LLNL)

2011-01-01T23:59:59.000Z

384

Analysis of an extremely fast valve opening camless system to improve transient performance in a turbocharged high speed direct injection diesel engine  

Science Journals Connector (OSTI)

This article describes a theoretical study on the performance optimisation of a high speed direct injection turbocharged diesel engine equipped with an electro-hydraulic variable valve actuation 'camless' system. This system provides extremely fast valve opening and closing slopes. Thus, its potential for recovering part of the energy lost in the valves by reducing gas flow sonic conditions in the valve throat has been investigated. This study has been mainly focused on the analysis of engine performance during a load transient evolution, but the full load steady state attained at the end of the load transient has been also discussed. The results of this investigation have confirmed important improvements in engine performance during the load transient owing to less energy being lost across the valves, which directly results in more energy being available in the turbine. This benefit has also been observed at full load steady state conditions.

J. Benajes; J.R. Serrano; V. Dolz; R. Novella

2009-01-01T23:59:59.000Z

385

EM Partnering Initiative: Journey to Excellence Metric No. 3.5 | Department  

Broader source: Energy.gov (indexed) [DOE]

Partnering Initiative: Journey to Excellence Metric No. 3.5 Partnering Initiative: Journey to Excellence Metric No. 3.5 EM Partnering Initiative: Journey to Excellence Metric No. 3.5 Partnering establishes a collaborative approach among the Government and Contractor to achieve results. Partnering is not a contract; it does not alter the contractual relationship of the two parties. This teaming approach is based upon open communication, collaboration, and commitment to joint success. Partnering refocuses the nature of the working relationship based upon mutual goals and objectives. This model emphasizes early detection of problems and issues and proactive resolution of issues sooner than would happen through the normal process of performance and reporting. Partnering, therefore, is a commitment to perform in a collaborative manner as members

386

Real-time performance monitoring and management system  

DOE Patents [OSTI]

A real-time performance monitoring system for monitoring an electric power grid. The electric power grid has a plurality of grid portions, each grid portion corresponding to one of a plurality of control areas. The real-time performance monitoring system includes a monitor computer for monitoring at least one of reliability metrics, generation metrics, transmission metrics, suppliers metrics, grid infrastructure security metrics, and markets metrics for the electric power grid. The data for metrics being monitored by the monitor computer are stored in a data base, and a visualization of the metrics is displayed on at least one display computer having a monitor. The at least one display computer in one said control area enables an operator to monitor the grid portion corresponding to a different said control area.

Budhraja, Vikram S. (Los Angeles, CA); Dyer, James D. (La Mirada, CA); Martinez Morales, Carlos A. (Upland, CA)

2007-06-19T23:59:59.000Z

387

Development of electron reflection suppression materials for improved thermionic energy converter performance using thin film deposition techniques  

SciTech Connect (OSTI)

Nonideal electrode surfaces cause significant degree of electron reflection from collector during thermionic converter operation. The effect of the collector surface structure on the converter performance was assessed through the development of several electron reflection suppression materials using various thin film deposition techniques. The double-diode probe method was used to compare the J-V characteristics of converters with polished and modified collector surfaces for emitter temperature and cesium vapor pressure in the ranges of 900-2000 K and 0.02-1.5 torr, respectively. The coadsorption of cesium and oxygen with respective partial vapor pressures of {approx}1.27 torr and a few microtorrs reduced the emitter work function to a minimum value of 0.99 eV. It was found that the collector surfaces with matte black appearance such as platinum black, voided nickel from radio-frequency plasma sputtering, and etched electroless Ni-P with craterlike pore morphology exhibited much better performance compared with polished collector surface. For these thin films, the increase in the maximum output voltage was up to 2.0 eV. For optimum performance with minimum work function and maximum saturation emission current density, the emitter temperature was in the range of 1100-1500 K, depending on the collector surface structure. The use of these materials in cylindrical converter design and/or in combination with hybrid mode triode configuration holds great potential in low and medium scale power generators for commercial use.

Islam, Mohammad; Inal, Osman T.; Luke, James R. [Department of Materials and Metallurgical Engineering, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801 (United States); New Mexico Institute of Mining and Technology, Institute for Engineering Research and Applications (IERA) , 901 University Blvd. SE, Albuquerque, New Mexico 87106-4339 (United States)

2006-10-15T23:59:59.000Z

388

Indefinite-Metric Quantum Field Theory  

Science Journals Connector (OSTI)

......Umezawa H. Quantum Field Theory (1956) North Holland...Wightman L. Arch. Fysik (1964) 28:129. Y...indefinite-metric quantum field theory, which was published...book, except for some basic points. The use of the...space in quantum field theory has been motivated for......

Noboru Nakanishi

1972-03-01T23:59:59.000Z

389

Ranking Metric Anomaly in Invariant Networks  

Science Journals Connector (OSTI)

The management of large-scale distributed information systems relies on the effective use and modeling of monitoring data collected at various points in the distributed information systems. A traditional approach to model monitoring data is to discover ... Keywords: Metric anomaly ranking, invariant networks, link analysis

Yong Ge; Guofei Jiang; Min Ding; Hui Xiong

2014-06-01T23:59:59.000Z

390

Performance improvement of TiO2 supported on adsorbents for photocatalytic degradation of MEK in air  

Science Journals Connector (OSTI)

Photocatalytic degradation of Methyl Ethyl Ketone (MEK) was carried out in gas phase using TiO2 supported on different adsorbents. Based on size and surface area, three different adsorbents, montmorillonite, ?-zeolite and MCM-41 were tested. A fluidised bed annular photoreactor fitted with either 254 or 365 nm lamps was used for the photodegradation studies. The removal rates of MEK were higher for the catalysts supported on the adsorbent as compared to bare TiO2 (Degussa P25 and sol-gel TiO2) due to both improved adsorption and photocatalytic degradation. The photocatalytic activity of the supported TiO2 was maximum around 50 wt.% loading of TiO2. Among all the adsorbents tested, montmorillonite showed better removal rate than MCM-41 and ?-zeolite. Some limited experiments were conducted with Trichloroethylene (TCE) to evaluate the effect of polarity of the organic compound on overall degradation using the supported catalysts.

Pavan Kumar Puttamraju; Madhumita B. Ray

2008-01-01T23:59:59.000Z

391

Improving the management of nuclear technology: Technical, financial, and organizational measures for assessing the performance of nuclear utilities  

Science Journals Connector (OSTI)

This paper is the outcome of a study with the objective of better understanding and improving the quality of the management of technology in the case of the nuclear power industry. The authors tried to deal with this topic in an empirical way, namely by conducting four case studies on the major nuclear power utilities in the State of New York and by doing a comparative analysis of the material collected, focusing on the main economic and organizational issues, and the management of technology practices that pertain to nuclear power generation. The study covered in depth the nuclear divisions of only four out of a total of fifty-five nuclear utilities that exist in the United States, hence we want to stress the caveat that it has an exploratory rather than a statistically conclusive nature.

Elias Carayannis; Jose Maldifassi

1992-01-01T23:59:59.000Z

392

Variable susceptance excitation control for dynamic performance improvement of a stand-alone wind turbine induction generator system  

Science Journals Connector (OSTI)

Isolated wind farms employ simple squirrel cage induction generators driven by variable speed wind turbines. Lacking control capability, such generation can contribute very little to network support. Wind turbines mostly do not take part in voltage and frequency control and if a disturbance occurs, the turbines may be disconnected and reconnected when normal operation has been resumed. From operation viewpoint, this is definitely not acceptable. A primary reason for the rigidity of operation is the lack of excitation adaptation under variable wind conditions. This article proposes incorporation of a variable capacitance controller at the generator terminal which will automatically adjust the needed excitation. Further improvement of transient profile of the stand-alone wind turbine generator has been proposed through inclusion of additional stabilising control. Simulation studies show that the proposed excitation controller with additional PID circuit provides very good transient profile following reasonable input torque variations.

A.H.M.A. Rahim; M. Ahsanul Alam

2009-01-01T23:59:59.000Z

393

Fluorinated Phosphazene Co-solvents for Improved Thermal and Safety Performance in Lithium-Ion Battery Electrolytes  

SciTech Connect (OSTI)

The safety of lithium-ion batteries is coming under increased scrutiny as they are being adopted for large format applications especially in the vehicle transportation industry and for grid-scale energy storage. The primary short-comings of lithium-ion batteries are the flammability of the liquid electrolyte and sensitivity to high voltage and elevated temperatures. We have synthesized a series of non-flammable fluorinated phosphazene liquids and blended them with conventional carbonate solvents. While the use of these phosphazenes as standalone electrolytes is highly desirable, they simply do not satisfy all of the many requirements that must be met such as high LiPF6 solubility and low viscosity, thus we have used them as additives and co-solvents in blends with typical carbonates. The physical and electrochemical properties of the electrolyte blends were characterized, and then the blends were used to build 2032-type coin cells which were evaluated at constant current cycling rates from C/10 to C/1. We have evaluated the performance of the electrolytes by determining the conductivity, viscosity, flash point, vapor pressure, thermal stability, electrochemical window, cell cycling data, and the ability to form solid electrolyte interphase (SEI) films. This paper presents our results on a series of chemically similar fluorinated cyclic phosphazene trimers, the FM series, which has exhibited numerous beneficial effects on battery performance, lifetimes, and safety aspects.

Harry W. Rollins; Mason K. Harrup; Eric J. Dufek; David K. Jamison; Sergiy V. Sazhin; Kevin L. Gering; Dayna L. Daubaras

2014-10-01T23:59:59.000Z

394

Post Secondary Project Performance Benchmarks  

Broader source: Energy.gov [DOE]

Reports five major performance metrics that can be used to benchmark proposed energy service company projects within post secondary education facilities, disaggregated and reported by major retrofit strategy. Author: U.S. Department of Energy

395

Lifetime exergy consumption as a sustainability metric for information technologies  

Science Journals Connector (OSTI)

This paper summarizes recent explorations of the use of lifetime exergy consumption as a thermodynamically based metric for sustainability of information technologies. Other proposed thermodynamic metrics are described and compared with life cycle exergy ...

David J. Lettieri; Christopher R. Hannemann; Van P. Carey; Amip J. Shah

2009-05-01T23:59:59.000Z

396

Application Potential of Four Nontraditional Similarity Metrics in Hydrometeorology  

Science Journals Connector (OSTI)

This paper presents a review and assessment of four nontraditional similarity metrics that can be applied to hydrological and meteorological data. These metrics are 1) the uncentered correlation coefficient, 2) the Hodgkin–Richards index, 3) the ...

Ruping Mo; Chengzhi Ye; Paul H. Whitfield

2014-10-01T23:59:59.000Z

397

Competing complexity metrics and adults' production of complex sentences  

E-Print Network [OSTI]

The adequacy of 11 metrics for measuring linguistic complexity was evaluated by applying each metric to language samples obtained from 30 different adult speakers, aged 60-90 years. The analysis then determined how well ...

Kemper, Susan; Cheng, Hintat

1992-01-01T23:59:59.000Z

398

The fuzzy inference system approach to a multi-performance characteristic index for surface quality improvement in CNC end milling  

Science Journals Connector (OSTI)

Utility embedded fuzzy approach has been adopted for multiple surface quality optimisation of 6061 T4 Aluminium in CNC end milling operation. The purpose is to evaluate the most favourable process environment consisting of selected process parameters viz. spindle speed, feed and depth of cut in order to satisfy multiple requirements of surface integrity. Various surface roughness parameters have been taken into account with a focus to minimise all of them simultaneously. Utility concept has been adopted to convert individual surface roughness parameters into corresponding utility value which have been fed to a fuzzy inference system to obtain a multi-performance characteristic index (MPCI). MPCI has been optimised finally using Taguchi method. Detailed methodology of the proposed approach has been presented with an illustrative example followed by satisfactory result of confirmatory test.

Saurav Datta; Siba Sankar Mahapatra; Bharat Chandra Routara; Asish Bandyopadhyay

2011-01-01T23:59:59.000Z

399

Performance improvement of Ge-Sb-Te material by GaSb doping for phase change memory  

SciTech Connect (OSTI)

Effects of GaSb doping on phase change characteristics of Ge-Sb-Te material are investigated by in situ resistance and x-ray diffraction measurement, optical spectroscopy, and x-ray photoelectron spectroscopy. The crystallization temperature and data retention of Ge-Sb-Te material increase significantly by the addition of GaSb, which results from the high thermal stability of amorphous GaSb. In addition, GaSb-doped Ge-Sb-Te material exhibits faster crystallization speed due to the change in electronic states as a result of the formation of chemical bonds with Ga element. Incorporation of GaSb is highly effective way to enhance the comprehensive performance of Ge-Sb-Te material for phase change memory.

Lu, Yegang [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China) [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211 (China); Graduate School of Chinese Academy of Sciences, Beijing 100049 (China); Zhang, Zhonghua; Song, Sannian; Cheng, Limin; Song, Zhitang [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China)] [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Shen, Xiang; Wang, Guoxiang; Dai, Shixun [Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211 (China)] [Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211 (China)

2013-06-17T23:59:59.000Z

400

Improved Performance of Proton Exchange Membrane Fuel Cells with p-Toluenesulfonic Acid-Doped Co-PPy/C as Cathode Electrocatalyst  

Science Journals Connector (OSTI)

The characteristics and electrocatalytic activities of Co-PPy-TsOH/C were analyzed with various techniques, including Raman spectroscopy, elemental analysis, rotating ring disk electrode analysis, and a single H2?O2 PEMFC, and compared with those of undoped catalyst Co-PPy/C. ... The performance of PEMFCs with Co-PPy-TsOH/C as cathode catalyst is better than that with Co-PPy/C, and the resulting maximum output power density of 203 mW cm?2 is a substantial improvement over the best values reported in the literature with Co-PPy/C-based cathode catalyst. ...

Xianxia Yuan; Xin Zeng; Hui-Juan Zhang; Zi-Feng Ma; Chao-Yang Wang

2010-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

An empirical study of aspect-oriented metrics  

Science Journals Connector (OSTI)

Metrics for aspect-oriented software have been proposed and used to investigate the benefits and the disadvantages of crosscutting concerns modularisation. Some of these metrics have not been rigorously defined nor analytically evaluated. Also, there ... Keywords: Aspect-oriented software development, AspectJ, Empirical evaluation, Metrics

Eduardo Kessler Piveta; Ana Moreira; Marcelo Soares Pimenta; João Araújo; Pedro Guerreiro; R. Tom Price

2012-11-01T23:59:59.000Z

402

Resolvent metrics and heat kernel estimates Andrs Telcs  

E-Print Network [OSTI]

are generalization of the resistance metric and provide uni...ed treatment of heat kernel estimates of sub), called resistance metric, which is quite natural in the analysis of the heat propagation. The particular beauty in his ...nding is that the the proof that function R (x; y) is a metric boils down to elementary

Telcs, András

403

A review of potential turbine technology options for improving the off-design performance of direct coal-fired gas turbines in base load service  

SciTech Connect (OSTI)

The January, 1988 draft topical report, entitled An Assessment of Off-Design Particle Control Performance on Direct Coal-Fired Gas Turbine Systems'' (Ref.1.1), identified the need to assess potential trade-offs in turbine aerodynamic and thermodynamic design which may offer improvements in the performance, operational and maintenance characteristics of open-cycle, direct coal-fired, combustion gas turbines. In this second of a series of three topical reports, an assessment of the technical options posed by the above trade-offs is presented. The assessment is based on the current status of gas turbine technology. Several industry and university experts were contacted to contribute to the study. Literature sources and theoretical considerations are used only to provide additional background and insight to the technology involved.

Thomas, R.L.

1988-03-01T23:59:59.000Z

404

A review of potential turbine technology options for improving the off-design performance of direct coal-fired gas turbines in base load service. Second topical report  

SciTech Connect (OSTI)

The January, 1988 draft topical report, entitled ``An Assessment of Off-Design Particle Control Performance on Direct Coal-Fired Gas Turbine Systems`` [Ref.1.1], identified the need to assess potential trade-offs in turbine aerodynamic and thermodynamic design which may offer improvements in the performance, operational and maintenance characteristics of open-cycle, direct coal-fired, combustion gas turbines. In this second of a series of three topical reports, an assessment of the technical options posed by the above trade-offs is presented. The assessment is based on the current status of gas turbine technology. Several industry and university experts were contacted to contribute to the study. Literature sources and theoretical considerations are used only to provide additional background and insight to the technology involved.

Thomas, R.L.

1988-03-01T23:59:59.000Z

405

Development of an improved CNC interpolator and performance evaluation in terms of chordal error and feedrate deviation  

Science Journals Connector (OSTI)

The parametric interpolators of modern CNC machines use Taylor's series approximation to generate successive parameter values which, after substituting into the curve equation, gives the x, y, z coordinates of the tool positions. In order to achieve greater accuracy, higher order derivatives are required which complicates the calculation when the curve is represented by NURBS curve. This method calculates the chordal error on a given segment by estimating the curvature which neglects a fraction of the error. In order to avoid calculating higher derivatives and make the calculations easier the classical fourth-order Runge-Kutta (RK) method is proposed in this research, which only requires the first derivative to be calculated, but achieves the accuracy of Taylor's approximation with higher order terms. This paper also proposes the estimation of chordal error on the average value of the parameters at the end points of a given curve segment, which does not require calculation of curvature at every segment. Finally computer simulation is performed on different types of spline curves to show that the proposed method results in reduced chordal error and less fluctuation in feedrate.

Biddut Bhattacharjee; Abdullahil Azeem

2009-01-01T23:59:59.000Z

406

Clean Cities 2010 Annual Metrics Report  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

0 Annual 0 Annual Metrics Report Caley Johnson Technical Report NREL/TP-7A30-52714 October 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 15013 Denver West Parkway Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Clean Cities 2010 Annual Metrics Report Caley Johnson Prepared under Task No. VTP.20020 Technical Report NREL/TP-7A30-52714 October 2012 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

407

Dynamic C-metrics in (Gauged) Supergravities  

E-Print Network [OSTI]

We construct an exact time-dependent charged dilaton C-metric in four-dimensional ${\\cal N}=4$ gauged supergravity. The scalar field drives the time evolution by transferring energy to the black holes, thereby causing their masses to increase and their acceleration to decrease. The values of the electric/magnetic and scalar charges determine three regions of potential time evolution. This solution holographically describes a strongly-coupled three-dimensional conformal field theory on the background of an evolving black hole. We also find new static charged dilaton C-metrics, which arise in four-dimensional Einstein-Maxwell-dilaton theories whose scalar potential can be expressed in terms of a superpotential.

H. Lu; Justin F. Vazquez-Poritz

2014-08-13T23:59:59.000Z

408

Complex geometry and pre-metric electromagnetism  

E-Print Network [OSTI]

The intimate link between complex geometry and the problem of the pre-metric formulation of electromagnetism is explored. In particular, the relationship between 3+1 decompositions of R4 and the decompositions of the vector space of bivectors over R4 into real and imaginary subspaces relative to a choice of complex structure is emphasized. The role of the various scalar products on the space of bivectors that are defined in terms of a volume element on R4 and a complex structure on the space of bivectors that makes it C-linear isomorphic to C3 is discussed in the context of formulation of a theory of electromagnetism in which the Lorentzian metric on spacetime follows as a consequence of the existence of electromagnetic waves, not a prior assumption.

D. H. Delphenich

2004-12-10T23:59:59.000Z

409

Clean Cities 2011 Annual Metrics Report  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

1 Annual 1 Annual Metrics Report Caley Johnson National Renewable Energy Laboratory Technical Report NREL/TP-7A30-56091 December 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 15013 Denver West Parkway Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Clean Cities 2011 Annual Metrics Report Caley Johnson Prepared under Task No. VTP2.0020 Technical Report NREL/TP-7A30-56091 December 2012 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty,

410

Optical metrics and birefringence of anisotropic media  

E-Print Network [OSTI]

The material tensor of linear response in electrodynamics is constructed out of products of two symmetric second rank tensor fields which in the approximation of geometrical optics and for uniaxial symmetry reduce to "optical" metrics, describing the phenomenon of birefringence. This representation is interpreted in the context of an underlying internal geometrical structure according to which the symmetric tensor fields are vectorial elements of an associated two-dimensional space.

Alexander B. Balakin; Winfried Zimdahl

2005-04-12T23:59:59.000Z

411

Smart Grid Status and Metrics Report  

SciTech Connect (OSTI)

To convey progress made in achieving the vision of a smart grid, this report uses a set of six characteristics derived from the National Energy Technology Laboratory Modern Grid Strategy. It measures 21 metrics to provide insight into the grid’s capacity to embody these characteristics. This report looks across a spectrum of smart grid concerns to measure the status of smart grid deployment and impacts.

Balducci, Patrick J.; Weimar, Mark R.; Kirkham, Harold

2014-07-01T23:59:59.000Z

412

Non-metric gravity: A status report  

E-Print Network [OSTI]

We review the status of a certain (infinite) class of four-dimensional generally covariant theories propagating two degrees of freedom that are formulated without any direct mention of the metric. General relativity itself (in its Plebanski formulation) belongs to the class, so these theories are examples of modified gravity. We summarize the current understanding of the nature of the modification, of the renormalizability properties of these theories, of their coupling to matter fields, and describe some of their physical properties.

Kirill Krasnov

2007-11-05T23:59:59.000Z

413

Microsoft PowerPoint - DOE-RL Hanford Metrics Presentation.pptx  

Broader source: Energy.gov (indexed) [DOE]

from the Field: from the Field: Implementing Cyber Security Metrics that Work Rick Grandy & Gregg Serene Cyber Security MSA/Lockheed Martin DOE Hanford Site "To make our customers extraordinarily successful in our unified mission of cleaning up the Hanford cleaning up the Hanford Site..." Hanford Site Scope - 586 square miles - 9 000+ PCs 9,000+ PCs - 500+ servers - 400+ applications - 1 000+ miles fiber to 300 bldgs 1,000+ miles fiber to 300 bldgs - 12,500+ phones 2 Why Metrics? * How do you know if you're How do you know if you re doing well in school? * How do you know if an athlete is performing well? p g * How do you know if you're o do you o you e healthy? - Weight, Blood Pressure 3 Why Metrics? * Does a FISMA Score of "A" mean... - The cyber program is more effective? - The cyber program is more efficient?

414

Thermal Performance Benchmarking (Presentation)  

SciTech Connect (OSTI)

This project will benchmark the thermal characteristics of automotive power electronics and electric motor thermal management systems. Recent vehicle systems will be benchmarked to establish baseline metrics, evaluate advantages and disadvantages of different thermal management systems, and identify areas of improvement to advance the state-of-the-art.

Moreno, G.

2014-11-01T23:59:59.000Z

415

Integrated approach towards the application of horizontal wells to improve waterflooding performance. Annual progress report, January 1, 1996--December 31, 1996  

SciTech Connect (OSTI)

This annual report describes the progress during the fourth year of the project on {open_quotes}Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance{close_quotes}. The project involves using an integrated approach to characterize the reservoir followed by proposing an appropriate reservoir management strategy to improve the field performance. In the first stage of the project, the type of data we integrated include cross borehole seismic surveys, geological interpretation based on the logs and the cores, and the engineering information. In contrast, during the second stage of the project, we intend to use only conventional data to construct the reservoir description. This report covers the results of the implementation from the first stage of the project. It also discusses the work accomplished so far for the second stage of the project. The production from the Self Unit (location of Stage 1) has sustained an increase of 30 bbls/day over a year with an additional increase anticipated with further implementation. We have collected available core, log and production data from Section 16 in the Berryhill Glenn Unit and have finished the geological description. Based on the geological description and the associated petrophysical properties, we have developed a new indexing procedure for identifying the areas with the most potential. We are also investigating an adjoining tract formerly operated by Chevron where successful miceller-polymer flood was conducted. This will help us in evaluating the reasons for the success of the flood. Armed with this information, we will conduct a detailed geostatistical and flow simulation study and recommend the best reservoir management plan to improve the recovery of the field.

Kelkar, M.; Liner, C.; Kerr, D.

1997-01-01T23:59:59.000Z

416

Portable and Transparent Message Compression in MPI Libraries to Improve the Performance and Scalability of Parallel Applications  

SciTech Connect (OSTI)

The goal of this project has been to develop a lossless compression algorithm for message-passing libraries that can accelerate HPC systems by reducing the communication time. Because both compression and decompression have to be performed in software in real time, the algorithm has to be extremely fast while still delivering a good compression ratio. During the first half of this project, they designed a new compression algorithm called FPC for scientific double-precision data, made the source code available on the web, and published two papers describing its operation, the first in the proceedings of the Data Compression Conference and the second in the IEEE Transactions on Computers. At comparable average compression ratios, this algorithm compresses and decompresses 10 to 100 times faster than BZIP2, DFCM, FSD, GZIP, and PLMI on the three architectures tested. With prediction tables that fit into the CPU's L1 data acache, FPC delivers a guaranteed throughput of six gigabits per second on a 1.6 GHz Itanium 2 system. The C source code and documentation of FPC are posted on-line and have already been downloaded hundreds of times. To evaluate FPC, they gathered 13 real-world scientific datasets from around the globe, including satellite data, crash-simulation data, and messages from HPC systems. Based on the large number of requests they received, they also made these datasets available to the community (with permission of the original sources). While FPC represents a great step forward, it soon became clear that its throughput was too slow for the emerging 10 gigabits per second networks. Hence, no speedup can be gained by including this algorithm in an MPI library. They therefore changed the aim of the second half of the project. Instead of implementing FPC in an MPI library, they refocused their efforts to develop a parallel compression algorithm to further boost the throughput. After all, all modern high-end microprocessors contain multiple CPUs on a single die and will undoubtedly contain even larger numbers of CPUs in the future. Hence, a compute node in a parallel system is likely to have multiple processors per interconnection link. Thus, they investigated how to best exploit multiple CPUs to compress and decompress data for a single link, i.e., they developed a parallel version of the FPC algorithm called pFPC. On a 4-core 3 GHz Xeon system, pFPC exceeds 10 gigabits per second both in compression and decompression throughput while still reaching a compression ratio of 18%, which is reasonable for their double-precision floating-point datasets. At half this throughput, it achieves a 41% compression ratio. Moreover, the algorithm scales well to four cores and promises even higher throughputs on larger machines. Additional results and a description of the pFPC algorithm have recently been published in the proceedings of the Data Compression Conference. The C source code of pFPC is also publicly available.

David Albonesi; Martin Burtscher

2009-04-17T23:59:59.000Z

417

Use of a warm mix asphalt additive to reduce the production temperatures and to improve the performance of asphalt rubber mixtures  

Science Journals Connector (OSTI)

Asphalt rubber mixtures are often described as environmentally friendly mixtures due to the incorporation of recycled rubber from used tires and due to their improved service life. In fact, their fatigue cracking and rut resistance properties are better than those of conventional asphalt concrete mixtures. However, asphalt rubber mixtures demand higher production temperatures than conventional mixtures due to the higher viscosity of the asphalt rubber binder. The objective of this paper is to assess the efficiency of using a surfactant based additive in the production of warm mix asphalts, by lowering the mixing temperatures of asphalt rubber and asphalt concrete mixtures without changing their performance. Several laboratory tests were carried out on asphalt rubber and asphalt concrete mixtures, with and without the additive, in order to evaluate and compare the performance of the mixtures. It was concluded that the incorporation of small amounts of a surfactant based additive allowed reducing the production temperatures of both types of mixture by 30 °C without compromising their performance, and this can be seen as a great step forward towards the production of cleaner asphalt rubber mixtures.

Joel R.M. Oliveira; Hugo M.R.D. Silva; Liliana P.F. Abreu; Sara R.M. Fernandes

2013-01-01T23:59:59.000Z

418

Template-space metric for searches for gravitational waves from the inspiral, merger and ringdown of binary black holes  

E-Print Network [OSTI]

Searches for gravitational waves (GWs) from binary black holes using interferometric GW detectors require the construction of template banks for performing matched filtering while analyzing the data. Placement of templates over the parameter space of binaries, as well as coincidence tests of GW triggers from multiple detectors make use of the definition of a metric over the space of gravitational waveforms. Although recent searches have employed waveform templates coherently describing the inspiral, merger and ringdown (IMR) of the coalescence, the metric used in the template banks and coincidence tests was derived from post-Newtonian inspiral waveforms. In this paper, we compute the template-space metric of the IMR waveform family IMRPhenomB over the parameter space of masses and the effective spin parameter. We also propose a coordinate system, which is a modified version of post-Newtonian chirp time coordinates, in which the metric is slowly varying over the parameter space. The match function analytically...

Kalaghatgi, Chinmay; Arun, K G

2015-01-01T23:59:59.000Z

419

EECBG SEP Attachment 1 - Process metric list  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Plans developed or improved Number of Climate Action Plans developed or improved 5f. GHG inventories completed Number of GHG inventories completed 5g. Renewable energy...

420

Improving the performance of BITNET  

E-Print Network [OSTI]

-flowl Input flow of 16-floir2 Input flow of 16-flow3 Input flow of 21-floiv2 112 113 TABLE XV1 Page LXII Tarriff for different capacities LXIII Distance between each node in BITNET LXIV Traffic between each node in BITNET 128 131 147 X%11... because the flows in the network are infeasible (in this thesis, we define f, & 0. 99C, for some i as "infeasible" ). However, the Phase. 1 algorithm for the non-bifurcsted FD algorithm is not explicitly stated in reference [3) (their remark...

Ku, Chih-Hsiung

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Evaluation of Advanced Heliostat Reflective Facets on Cost and Performance  

Science Journals Connector (OSTI)

Abstract Heliostat reflective facets have traditionally been constructed with glass/silver and metal back support, which may be near reaching its minimum cost point. During the past year, Sandia National Laboratories evaluated alternative low-cost materials and manufacturing methods to construct facets with the goal of reducing current facet cost by at least 25% while maintaining surface slope errors of 1 milli-radians RMS or below. Several companies developed prototype facet samples, which were optically evaluated at Sandia and compared to baseline facet samples using a proposed cost-to-performance metric. A cost-performance metric for comparing facets was developed by modeling and optimizing the hypothetical SunShot 200 \\{MWe\\} power tower plant scenario in DELSOL, a computer code for system-level modeling of power tower systems. We varied the slope error on the facets and adjusted the cost on the facets to maintain a constant plant levelized cost of energy (LCOE). The result of these models provided a chart of the facet optical performance and the allowable facet cost for a constant plant LCOE. The size of the prototype facet samples ranged from 1.4 to 3 m2. The measured optical slope errors were between 1 and 2 milli- radians RMS when compared to a flat mirror design shape. Despite slope errors greater than 1 milli-radians RMS, some of the prototype samples met the cost goals for this project using the cost-performance metric. Next steps are to work with the companies to improve the manufacturing processes and further reduce the cost and improve on the optical performance to reach Department of Energy SunShot goal of $75/m2 for heliostats.

J. Yellowhair; C.E. Andraka

2014-01-01T23:59:59.000Z

422

Projects selected in todays announcement will focus on updating technologies and methods to improve the performance of conventional hydropower plants  

Broader source: Energy.gov (indexed) [DOE]

in today's announcement will focus on updating technologies in today's announcement will focus on updating technologies and methods to improve the performance of conventional hydropower plants. The projects selected for negotiation of awards include: Dehlsen Associates, LLC (Carpinteria, CA) will further develop and validate the Aquantis Current Plane ocean current turbine technology. The project will validate analytical design tools and develop the technology's direct drive component. DOE share: up to $750,000; Duration: up to 2 years Dehlsen Associates, LLC (Carpinteria, CA) will first develop a bottom habitat survey methodology and siting study approach in accordance with all relevant regulatory agencies in the southeast Florida region; then they will determine the most suitable areas for mooring marine and hydrokinetic facilities based on the

423

Global hyperbolicity for spacetimes with continuous metrics  

E-Print Network [OSTI]

We show that the definition of global hyperbolicity in terms of the compactness of the causal diamonds and non-total imprisonment can be extended to spacetimes with continuous metrics, while retaining all of the equivalences to other notions of global hyperbolicity. In fact, global hyperbolicity is equivalent to the compactness of the space of causal curves and to the existence of a Cauchy hypersurface. Furthermore, global hyperbolicity implies causal simplicity, stable causality and the existence of maximal curves connecting any two causally related points.

Clemens Sämann

2015-02-02T23:59:59.000Z

424

Metrics For Comparing Plasma Mass Filters  

SciTech Connect (OSTI)

High-throughput mass separation of nuclear waste may be useful for optimal storage, disposal, or environmental remediation. The most dangerous part of nuclear waste is the fission product, which produces most of the heat and medium-term radiation. Plasmas are well-suited to separating nuclear waste because they can separate many different species in a single step. A number of plasma devices have been designed for such mass separation, but there has been no standardized comparison between these devices. We define a standard metric, the separative power per unit volume, and derive it for three different plasma mass filters: the plasma centrifuge, Ohkawa filter, and the magnetic centrifugal mass filter. __________________________________________________

Abraham J. Fetterman and Nathaniel J. Fisch

2012-08-15T23:59:59.000Z

425

A novel soluble nano-catalysts in diesel–biodiesel fuel blends to improve diesel engines performance and reduce exhaust emissions  

Science Journals Connector (OSTI)

Abstract This study was aimed at synthesizing a novel soluble hybrid nanocatalyst to decrease emissions i.e., nitrogen oxide compounds (NOx), carbon monoxide (CO), unburned hydrocarbons (HC) and soot, of a DI engine fueled with diesel–biodiesel blends. Moreover, enhancement of performance parameters i.e. power, torque and fuel consumption was also simultaneously targeted. The hybrid nanocatalyst containing cerium oxide on amide-functionalized multiwall carbon nanotubes (MWCNT) was investigated using two types of diesel–biodiesel blends (B5 and B20) at three concentrations (30, 60 and 90 ppm). The results obtained revealed that high surface area of the soluble nano-sized catalyst particles and their proper distribution along with catalytic oxidation reaction resulted in significant overall improvements in the combustion reaction specially in B20 containing 90 ppm of the catalyst B20(90 ppm). More specifically, all pollutants i.e., NOx, CO, HC and soot were reduced by up to 18.9%, 38.8%, 71.4% and 26.3%, respectively, in B20(90 ppm) compared to neat B20. The innovated fuel blend also increased engine performance parameters i.e., power and torque by up to 7.81%, 4.91%, respectively, and decreased fuel consumption by 4.50%.

Mehrdad Mirzajanzadeh; Meisam Tabatabaei; Mehdi Ardjmand; Alimorad Rashidi; Barat Ghobadian; Mohammad Barkhi; Mohammad Pazouki

2015-01-01T23:59:59.000Z

426

A Novel Method to Improve the Electrochemical Performance of LiMn2O4 Cathode Active Material by CaCO3 Surface Coating  

Science Journals Connector (OSTI)

Spinel LiMn2O4 was synthesized by glycine-nitrate method and coated with CaCO3 in order to enhance the electrochemical performance at room temperature (25°C) and 55°C. The uncoated and CaCO3-coated LiMn2O4 materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical tests. XRD and SEM results indicated that CaCO3 particles encapsulated the surface of the LiMn2O4 without causing any structural change. The charge-discharge tests showed that the specific discharge capacity fade of pristine electrode at 25 and 55°C were 25.5% and 52%, respectively. However, surface modified cathode shows 7.4% and 29.5% loss compared to initial specific discharge capacity at 70th cycle for 25 and 55°C, respectively. The improvement of electrochemical performance is attributed to suppression of Mn2+ dissolution into electrolyte via CaCO3 layer.

Halil ?ahan; Hüseyin Göktepe; ?aban Patat

2011-01-01T23:59:59.000Z

427

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR - EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

Work associated with Budget Period 1 of the East Binger (Marchand) Unit project is nearing completion. A major aspect of this project is accurate modeling of the performance of horizontal wells. Well EBU 37-3H, the first horizontal well drilled in the unit, was drilled in the second quarter of 2001. After much difficulty establishing economic production from the well, the well was hydraulically fractured in November 2001. Post-treatment production has been very encouraging and is significantly better than a vertical well drilled in a similar setting. International Reservoir Technologies, Inc. has completed the final history match of the pilot area reservoir simulation model, including tuning to the performance of the horizontal well. The model's predicted reservoir pressure gradient between injection and production wells accurately matches observed data from the field, a significant improvement from prior model predictions. The model's predicted gas injection profiles now also more accurately match field data. Work has begun toward evaluating the optimum development scenario with the pilot model. Initially, four scenarios will be evaluated--two involving all horizontal infill wells, one involving all vertical infill wells, and one involving a combination of vertical and horizontal infill wells. The model cases for these scenarios have been defined, and construction of them is underway.

Joe Sinner

2002-01-16T23:59:59.000Z

428

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR -- EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

Budget Period 2 of the East Binger Unit (''EBU'') DOE Project has been. Recent activities included additional data gathering and project monitoring, plus initiation of work on an SPE paper on the modeling efforts of the project. Early production performance suggests horizontal wells do not provide sufficient additional production over vertical wells to justify their incremental cost. It will take more time to evaluate the impact of the horizontal wells on sweep and ultimate recovery, but it is unlikely that an improvement in recovery will be sufficient to make the overall economic value of horizontal wells greater than the economic value of vertical wells. Monitoring of overall performance of the pilot area continues. Overall response to the various projects continues to be very favorable. Injection into the pilot area has nearly doubled, while gas production and nitrogen content of produced gas have both decreased. Nitrogen recycle within the pilot area has dropped from 60% to 20%. Efforts to further disseminate knowledge gained through this project, by means of technical paper presentations to industry groups, are underway. Project monitoring and technology transfer will be focus areas of Budget Period 3.

Joe Sinner

2004-08-24T23:59:59.000Z

429

Dense CoO/graphene stacks via self-assembly for improved reversibility as high performance anode in lithium ion batteries  

Science Journals Connector (OSTI)

Abstract Here, we propose a novel strategy to prepare dense stacks composed of alternating CoO and graphene layers for an anode in lithium ion batteries (LIBs), which contributes to enhanced stability and relatively large reversible capacity. This is accomplished by spontaneously pre-aligning negatively charged CoO-anchored graphene oxide (CG) and positively charged amine-functionalized graphene (GN) in an acidic medium, followed by thermal reduction. The performance of this product is contrasted with that of CG prepared under the identical conditions without the addition of GN, in which CoO nanoparticles are sandwiched between relatively loose and randomly oriented graphene stacks. For example, the composite delivers a capacity greater than 800 mAh g?1 with a fading rate of 0.04 mAh g?1 cycle?1 during 1000 charge/discharge (C/D) cycles at 1.0 A g?1, in contrast to ca. 400 mAh g?1 and 0.24 mAh g?1 cycle?1 for thermally reduced CG without the addition of GN. The origin of the superior electrochemical performance in the dense stacks is ascribed to the enhanced reversibility of a conversion reaction, which in turn contributes to a persistent formation/dissolution of gel-like polymer films (i.e., stable pseudo-capacitance). Experimental evidences that substantiate the aforementioned behaviors (improved reversibility for both processes) are presented.

S.J. Richard Prabakar; R. Suresh Babu; Minhak Oh; Myoung Soo Lah; Su Cheol Han; Jaehyang Jeong; Myoungho Pyo

2014-01-01T23:59:59.000Z

430

DOE Uranium Leasing Program - Lease Tract Metrics  

Broader source: Energy.gov (indexed) [DOE]

Uranium Leasing Program -- Lease Tract Metrics Uranium Leasing Program -- Lease Tract Metrics Lease Tract Lessee Lease Date Bid (%) Reclamation Bond a Total Acres Acres Excluded b Comment C-JD-5 Gold Eagle Mining, Inc. 04/30/08 12.00 37,000 150.71 C-JD-5A Golden Eagle Uranium, LLC 06/27/08 20.10 5,000 24.54 C-JD-6 Cotter Corporation 04/30/08 14.20 19,000 530.08 C-JD-7 c Cotter Corporation 04/30/08 27.30 1,206,000 493.01 C-JD-8 Cotter Corporation 04/30/08 36.20 4,000 954.62 C-JD-8A No bids received - remains inactive N/A N/A N/A 77.91 C-JD-9 Cotter Corporation 04/30/08 24.30 72,000 1,036.50 C-SR-10 Golden Eagle Uranium, LLC 06/27/08 13.10 5,000 637.64 C-SR-11 Cotter Corporation 04/30/08 11.67 43,000 1,303.22 200.25 Summit Canyon area excluded from lease tract C-SR-11A Golden Eagle Uranium, LLC 06/27/08 14.30 5,000 1,296.81 C-SR-12 Colorado Plateau Partners 06/27/08

431

Superradiance on the Reissner-Nordstrom metric  

E-Print Network [OSTI]

In this article, we study the superradiance of charged scalar fields on the sub-extremal Reissner-Nordstrom metric, a mechanism by which such fields can extract energy from a static spherically symmetric charged black hole. A geometrical way of measuring the amount of energy extracted is proposed. Then we investigate the question numerically. The toy-model and the numerical methods used in our simulations are presented and the problem of long time measurement of the outgoing energy flux is discussed. We provide a numerical example of a field exhibiting a behaviour analogous to the Penrose process: an incoming wave packet which splits, as it approaches the black hole, into an incoming part with negative energy and an outgoing part with more energy than the initial incoming one. We also show another type of superradiant solution for which the energy extraction is more important. Hyperradiant behaviour is not observed, which is an indication that the Reissner-Nordstrom metric is linearly stable in the sub-extrem...

Di Menza, Laurent

2014-01-01T23:59:59.000Z

432

Improving the energy efficiency of sparse linear system solvers on multicore and manycore systems  

Science Journals Connector (OSTI)

...impacting their performance. high performance computing|energy efficiency|sparse...about the energy draw by high performance computing (HPC) facilities, the...new metric for ranking high performance computing systems. Sandia report...

2014-01-01T23:59:59.000Z

433

Spherically Symmetric, Metrically Static, Isolated Systems in Quasi-Metric Gravity  

E-Print Network [OSTI]

The gravitational field exterior respectively interior to a spherically symmetric, isolated body made of perfect fluid is examined within the quasi-metric framework (QMF). It is required that the gravitational field is "metrically static", meaning that it is static except for the effects of the global cosmic expansion on the spatial geometry. Dynamical equations for the gravitational field are set up and an exact solution is found for the exterior part. Besides, equations of motion applying to inertial test particles moving in the exterior gravitational field are set up. By construction the gravitational field of the system is not static with respect to the cosmic expansion. This means that the radius of the source increases and that distances between circular orbits of inertial test particles increase according to the Hubble law. Moreover it is shown that if this model of an expanding gravitational field is taken to represent the gravitational field of the Sun (or isolated planetary systems), this has no serious consequences for observational aspects of planetary motion. On the contrary some observational facts of the Earth-Moon system are naturally explained within the QMF. Finally the QMF predicts different secular increases for two different gravitational coupling parameters. But such secular changes are neither present in the Newtonian limit of the quasi-metric equations of motion nor in the Newtonian limit of the quasi-metric field equations valid inside metrically static sources. Thus standard interpretations of space experiments testing the secular variation of G are explicitly theory-dependent and do not apply to the QMF.

Dag Østvang

2014-05-09T23:59:59.000Z

434

Kerr-NUT-AdS metrics and string theory  

E-Print Network [OSTI]

achieved in 1916 by Schwarzschild, by making a simplifying ansatz for a static metric with spherical symmetry. An interesting feature of this solution is that the metric has an “event horizon” which separates the spacetime into two regions. Nothing, even... light, can escape from inside the horizon. This introduces a new object into theoretical physics, the black hole. Schwarzschild’s metric carries only one parameter, the mass. Two years after his discovery, Reissner [3] and Nordstr¨om [4] found a charged...

Chen, Wei

2008-10-10T23:59:59.000Z

435

Kerr-NUT-AdS metrics and string theory  

E-Print Network [OSTI]

achieved in 1916 by Schwarzschild, by making a simplifying ansatz for a static metric with spherical symmetry. An interesting feature of this solution is that the metric has an ?event horizon? which separates the spacetime into two regions. Nothing, even... light, can escape from inside the horizon. This introduces a new object into theoretical physics, the black hole. Schwarzschild?s metric carries only one parameter, the mass. Two years after his discovery, Reissner [3] and Nordstr?om [4] found a charged...

Chen, Wei

2009-05-15T23:59:59.000Z

436

On isotropic metric of Schwarzschild solution of Einstein equation  

E-Print Network [OSTI]

The known static isotropic metric of Schwarzschild solution of Einstein equation cannot cover with the range of r<2MG, a new isotropic metric of Schwarzschild solution is obtained. The new isotropic metric has the characters: (1) It is dynamic and periodic. (2) It has infinite singularities of the spacetime. (3) It cannot cover with the range of 0metric.

T. Mei

2006-10-24T23:59:59.000Z

437

Making the ‘rebound effect’ more useful for performance evaluation of thermal retrofits of existing homes: Defining the ‘energy savings deficit’ and the ‘energy performance gap’  

Science Journals Connector (OSTI)

Abstract Concern has recently intensified regarding increases in the consumption of energy services that often follow energy efficiency improvements, a phenomenon widely called the ‘rebound effect’. However, while some economists have precisely defined this as a metric, much discussion in academic and policy literature is imprecise, leading to confusion and miscommunication. This is especially so regarding direct ‘rebound effects’ in thermal retrofits of existing homes. This study surveys common usages of the term ‘rebound effect’ in domestic heating, identifying three main metrics, which employ different mathematical forms and therefore give different results, but are often lumped together. It defines these as the ‘classic’ rebound effect; the ‘energy savings deficit’, and the ‘energy performance gap’. It then applies these to an empirical case study of three recently retrofitted 30-apartment buildings in Germany. It finds that each metric gives different results for identical situations, ranging from 2.0% to 29.9% for one building, 15.7% to 56.8% for the second, and 43.7% to 272.9% for the third. This may be one reason so-called ‘rebound effect’ results from various studies are so disparate. Nevertheless, specific uses are identified for each of the three metrics, provided their precise definitions are made clear.

Ray Galvin

2014-01-01T23:59:59.000Z

438

Energy consumption metrics of MIT buildings  

E-Print Network [OSTI]

With world energy demand on the rise and greenhouse gas levels breaking new records each year, lowering energy consumption and improving energy efficiency has become vital. MIT, in a mission to help improve the global ...

Schmidt, Justin David

2010-01-01T23:59:59.000Z

439

Clean Cities 2012 Annual Metrics Report  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Energy Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC. This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Contract No. DE-AC36-08GO28308 Clean Cities 2012 Annual Metrics Report Caley Johnson National Renewable Energy Laboratory Technical Report NREL/TP-5400-60274 December 2013 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC. This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Contract No. DE-AC36-08GO28308 National Renewable Energy Laboratory

440

Clean Cities 2013 Annual Metrics Report  

SciTech Connect (OSTI)

Each year, the U.S. Department of Energy asks its Clean Cities program coordinators to submit annual reports of their activities and accomplishments for the previous calendar year. Data and information are submitted via an online database that is maintained as part of the Alternative Fuels Data Center (AFDC) at the National Renewable Energy Laboratory (NREL). Coordinators submit a range of data that characterize the membership, funding, projects, and activities of their coalitions. They also submit data about sales of alternative fuels, deployment of alternative fuel vehicles (AFVs) and hybrid electric vehicles (HEVs), idle-reduction (IR) initiatives, fuel economy activities, and programs to reduce vehicle miles traveled (VMT). NREL analyzes the data and translates them into petroleum-use reduction impacts, which are summarized in this 2013 Annual Metrics Report.

Johnson, C.; Singer, M.

2014-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Bi-metric Gravity and "Dark Matter"  

E-Print Network [OSTI]

We present a bi-metric theory of gravity containing a length scale of galactic size. For distances less than this scale the theory satisfies the standard tests of General Relativity. For distances greater than this scale the theory yields an effective gravitational constant much larger than the locally observed value of Newton's constant. The transition from one regime to the other through the galactic scale can explain the observed rotation curves of galaxies and hence the effects normally attributed to the presence of dark matter. Phenomena on an extragalactic scale such as galactic clusters and the expansion of the universe are controlled by the enhanced gravitational coupling. This provides an explanation of the missing matter normally invoked to account for the observed value of Hubble's constant in relation to observed matter.

I. T. Drummond

2000-08-18T23:59:59.000Z

442

Merging electromagnetism with space-time metric  

E-Print Network [OSTI]

In the present work, it is shown that the electromagnetism may be directly associated to the four-dimensional space-time geometry. The starting point is an analysis of the geodesic equation of general relativity where it is verified that it contains implicitly the effects of the Coulomb and the Lorentz forces. Consequently, some components of the metric tensor are identified with the components of the four-vector electromagnetic potential. Then, it is constructed a low-field equation for the electromagnetism in the same structure of the Einstein field equations for the gravitation, relating the curvature of space-time to sources of charge and current density. In this framework, all the Maxwell equations are implicit. A proof of consistency with the framework of quantum mechanics is shown.

C. A. Duarte

2014-03-10T23:59:59.000Z

443

EINSTEIN METRICS AND YAMABE INVARIANTS OF WEIGHTED PROJECTIVE SPACES  

E-Print Network [OSTI]

the singular set, such that near any singular point the metric locally lifts to a smooth -invariant metric on B. Introduction This article is concerned with certain orbifolds in dimension four with isolated singularities points if and only if (r, q, p) = (1, 1

Viaclovsky, Jeff

444

Optimal realizations of generic 5-point metrics Jack Koolen  

E-Print Network [OSTI]

.moulton@cmp.uea.ac.uk FAX: +44 1603 593345 5 October, 2007 1 #12;Abstract Given a metric d on a finite set X, a realization classes [12]. An explicit description of Type I,II and III metrics is presented in Section 2. Now, suppose

445

Heat kernel estimates and related inequalities on metric graphs  

E-Print Network [OSTI]

We consider metric graphs with Kirchhoff boundary conditions. We study the intrinsic metric, volume doubling and a Poincar\\'e inequality. This enables us to prove a parabolic Harnack inequality. The proof involves various techniques from the theory of strongly local Dirichlet forms. Along our way we show Sobolev and Nash type inequalities and related heat kernel estimates.

Sebastian Haeseler

2011-01-15T23:59:59.000Z

446

METRICS FOR STRATEGIC ALLIANCE John Callahan, Carleton University  

E-Print Network [OSTI]

METRICS FOR STRATEGIC ALLIANCE CONTROL John Callahan, Carleton University and Scott MacKenzie, Nortel Networks Suggested keywords: Metrics; Strategic alliance; Product development; Control; Learning a feedback control model of product development alliance management. The model allows us to place alliance

Callahan, John

447

Regular Black Hole Metric with Three Constants of Motion  

E-Print Network [OSTI]

According to the no-hair theorem, astrophysical black holes are uniquely characterized by their masses and spins and are described by the Kerr metric. Several parametric spacetimes which deviate from the Kerr metric have been proposed in order to test this theorem with observations of black holes in both the electromagnetic and gravitational-wave spectra. Such metrics often contain naked singularities or closed timelike curves in the vicinity of the compact objects that can limit the applicability of the metrics to compact objects that do not spin rapidly, and generally admit only two constants of motion. The existence of a third constant, however, can facilitate the calculation of observables, because the equations of motion can be written in first-order form. In this paper, I design a Kerr-like black hole metric which is regular everywhere outside of the event horizon, possesses three independent constants of motion, and depends nonlinearly on four free functions that parameterize potential deviations from ...

Johannsen, Tim

2015-01-01T23:59:59.000Z

448

Performance characterization of an internsity-modulated fiber optic displacement sensor  

SciTech Connect (OSTI)

A testbed simulating an intensity-modulated fiber optic displacement sensor is experimentally characterized, and the implications regarding sensor design are discussed. Of interest are the intensity distribution of the transmitted optical signal and the relationships between sensor architecture and performance. Particularly, an intensity-modulated sensor's sensitivity, linearity, displacement range, and resolution are functions of the relative positioning of its transmitting and receiving fibers. In this paper, sensor architectures with various combinations of these performance metrics are discussed. A sensor capable of micrometer resolution is reported, and it is concluded that this work could lead to an improved methodology for sensor design.

Moro, Erik Allan [Los Alamos National Laboratory; Todd, Michael D [Los Alamos National Laboratory; Puckett, Santhony D [Los Alamos National Laboratory

2010-09-30T23:59:59.000Z

449

Comparing exposure metrics for classifying ‘dangerous heat’ in heat wave and health warning systems  

Science Journals Connector (OSTI)

Heat waves have been linked to excess mortality and morbidity, and are projected to increase in frequency and intensity with a warming climate. This study compares exposure metrics to trigger heat wave and health warning systems (HHWS), and introduces a novel multi-level hybrid clustering method to identify potential dangerously hot days. Two-level and three-level hybrid clustering analysis as well as common indices used to trigger HHWS, including spatial synoptic classification (SSC), and the 90th, 95th, and 99th percentiles of minimum and relative minimum temperature (using a 10 day reference period), were calculated using a summertime weather dataset in Detroit from 1976 to 2006. The days classified as ‘hot’ with hybrid clustering analysis, SSC, minimum and relative minimum temperature methods differed by method type. SSC tended to include the days with, on average, 2.5 °C lower daily minimum temperature and 5.3 °C lower dew point than days identified by other methods. These metrics were evaluated by comparing their performance in predicting excess daily mortality. The 99th percentile of minimum temperature was generally the most predictive, followed by the three-level hybrid clustering method, the 95th percentile of minimum temperature, SSC and others. Our proposed clustering framework has more flexibility and requires less substantial meteorological prior information than the synoptic classification methods. Comparison of these metrics in predicting excess daily mortality suggests that metrics thought to better characterize physiological heat stress by considering several weather conditions simultaneously may not be the same metrics that are better at predicting heat-related mortality, which has significant implications in HHWSs.

Kai Zhang; Richard B. Rood; George Michailidis; Evan M. Oswald; Joel D. Schwartz; Antonella Zanobetti; Kristie L. Ebi; Marie S. O'Neill

2012-01-01T23:59:59.000Z

450

Computational Science Technical Note CSTN-119 Betweenness Centrality Metrics for Assessing Electrical Power Network  

E-Print Network [OSTI]

0 Computational Science Technical Note CSTN-119 Betweenness Centrality Metrics for Assessing. Hawick}, title = {Betweenness Centrality Metrics for Assessing Electrical Power Network Robustness Metrics for Assessing Electrical Power Network Robustness against Fragmentation and Node Failure K

Hawick, Ken

451

METRIC: Tracking Down Inefficiencies in the Memory Hierarchy via Binary Rewriting Jaydeep Marathe 1 , Frank Mueller 1 , Tushar Mohan 2 ,  

E-Print Network [OSTI]

Raleigh, NC 27695­7534 Salt Lake City, UT 84112 Ithaca, NY 14853 L­561, Livermore, CA 94551 mueller inefficiencies by examining data traces. METRIC is designed to alter the performance be­ havior of applications in this paper. First, we present meth­ ods to extract partial data traces from running applications by observing

Mueller, Frank

452

Weighting and Bayes Nets for Rollup of Surveillance Metrics  

SciTech Connect (OSTI)

The LANL IKE team proposes that the surveillance metrics for several data stream that are used to detect the same failure mode be weighted. Similarly, the failure mode metrics are weighted to obtain a subsystem metric. E.g., if there n data streams (nodes 1-n), the failure mode (node 0) metric is obtained as M{sub 0} = w{sub 1}M{sub 1} + {hor_ellipsis} + w{sub n}M{sub n}, where {Sigma}{sub i=1}{sup n} w{sub i} = 1. This proposal has been implemented with Bayes Nets using the Netica/IKE software by specifying an appropriate conditional probability table (CPT). This CPT is calculated using the same form as (1), where the data stream metrics for the true (T) and false (F) states are replaced by 1 and 0, respectively. Then using this CPT, the failure mode metric calculated by Netica/IKE equals (1). This result has two nice features. First, the rollup Bayes nets is doing can be easily explained. Second, because Bayes Nets can implement this rollup using Netica/IKE, then data marshalling (allocating next year's budget) can be studied. A proof that the claim 'failure mode metric calculated by Netica/IKE equals (1)' for n = 2 and n = 3 follows as well as the sketch of a proof by induction for general n.

Henson, Kriste [Los Alamos National Laboratory; Sentz, Kari [Los Alamos National Laboratory; Hamada, Michael [Los Alamos National Laboratory

2012-04-30T23:59:59.000Z

453

Metrication of ASME Pressure Technology Codes and Standards: Status report  

SciTech Connect (OSTI)

There is not universal agreement on metrication. Most agree that it is necessary--sometime, maybe for the next generation, but not now; some agree that it is eventually necessary, and even desirable, but that it is too early; some believe that it is too late, already. Currently, for many pressure technology code users, metrication is neither needed nor wanted; for some, the opposite is true. However, Society leadership indicates that such may not hold for the future, and it is unlikely that the rest of the world will decide to convert to the inch-pound system. Therefore, it seems logical to at least begin the metrication process, which will take years to complete. The first step is accomplished by providing a dual system for reference and familiarity, using the soft side of hard conversion. This leaves the inch-pound system essentially intact, while affording the opportunity for limited use of metric standards and time for true metric sizes and products to become part of PTCS. The eventual goal, is not being metric for the sake of being metric, but to be globally consistent for economic reasons, and to facilitate the movement towards a smaller number of standard sizes worldwide.

Hollinger, G.L. [Babcock and Wilcox, Barberton, OH (United States). Research and Development Div.

1996-12-01T23:59:59.000Z

454

The room noise criteria (RNC) metric.  

Science Journals Connector (OSTI)

The recent ANSI S12.2:2008 room noise criteria contains both a survey and an engineering method to specify room noise criteria. The methods use A?weighting and extended NC respectively. A new metric titled like the standard room noise criteria (RNC) is included as a diagnostic tool. It is based on human hearing and more correctly assesses low?frequency sound. In particular it is sensitive to the standard deviation to random noise and/or low?frequency surging in the 16–125 Hz octave bands such as the sound that can be produced by HVAC systems or other devices. It provides a bridge between the NC and RC criteria by correctly predicting the need for the less stringent (at low frequencies) NC criteria when the HVAC system is well designed (no surging moderate standard deviation) and also correctly predicting the more stringent (at low frequencies) RC criteria when the HVAC system noise has a large standard deviation and/or surging.

2009-01-01T23:59:59.000Z

455

Characterizing the performance and energy attributes of scientific simulations  

Science Journals Connector (OSTI)

We characterize the performance and energy attributes of scientific applications based on nonlinear partial differential equations (PDEs). where the dominant cost is that of sparse linear system solution. We obtain performance and energy metrics using ...

Sayaka Akioka; Konrad Malkowski; Padma Raghavan; Mary Jane Irwin; Lois Curfman McInnes; Boyana Norris

2006-05-01T23:59:59.000Z

456

Performance Evaluation of Surveillance Systems Under Varying Conditions  

E-Print Network [OSTI]

/outdoor, different weather conditions (precipitation, wind, and brightness), different cameras of metrics. Visualization of the performance results has proven critical for understanding the weaknesses, as the weather varies, the seasons change, and the daily events unfold. Performance evaluation of automatic

Senior, Andrew

457

A Modification of the Standard Cosmological Metric  

E-Print Network [OSTI]

In this article we firstly present an explicit dynamical equation satisfying the general principle of relativity under the framework of classical mechanics. In light of this fact, the necessity of Einstein's equivalence principle for the gravity being geometrized should be reexamined. Especially, Einstein's (strong) equivalence principle claims that the inertial force is equivalent to the gravitational force. But in fact the new dynamical equation proves that the essence of the inertial force is the real force exerted on the reference object, which can actually be all kinds of forces such as the gravitational force, electromagnetic force and so on. Therefore, in this context we only retain the numerical equality between the inertial mass and gravitational mass and abandon Einstein's (strong) equivalence principle. Consequently, the candidate for the standard clock should be corrected into the mathematical clock which duplicates the real clock equipped by the observer himself. Then a new physical picture for how to convert the gravitational force into a geometric description on spacetime is presented. On the other hand, we point out that all cosmological observations are made by the observer at present on the earth, instead of any other observers including the comoving observers in the earlier unverse. On this basis, we introduce an extra factor $b(t)$ in $FRW$ cosmological metric to depict the gravitational time dilation effect since the local proper clock may run in a faster and faster rate with the expanding of the universe. In this way, we may obtain a positive value of $\\rho+3p$ and avoid the introduction of dark energy in the current universe.

ChiYi Chen

2004-11-04T23:59:59.000Z

458

Analyses Of Two End-User Software Vulnerability Exposure Metrics  

SciTech Connect (OSTI)

The risk due to software vulnerabilities will not be completely resolved in the near future. Instead, putting reliable vulnerability measures into the hands of end-users so that informed decisions can be made regarding the relative security exposure incurred by choosing one software package over another is of importance. To that end, we propose two new security metrics, average active vulnerabilities (AAV) and vulnerability free days (VFD). These metrics capture both the speed with which new vulnerabilities are reported to vendors and the rate at which software vendors fix them. We then examine how the metrics are computed using currently available datasets and demonstrate their estimation in a simulation experiment using four different browsers as a case study. Finally, we discuss how the metrics may be used by the various stakeholders of software and to software usage decisions.

Jason L. Wright; Miles McQueen; Lawrence Wellman

2012-08-01T23:59:59.000Z

459

Technical Workshop: Resilience Metrics for Energy Transmission and Distribution Infrastructure  

Broader source: Energy.gov [DOE]

During this workshop, EPSA invited technical experts from industry, national laboratories, and NGOs to discuss the need for resilience metrics and how they vary by natural gas, liquid fuels and electric grid infrastructures.

460

Consistent metric combinations in cosmology of massive bigravity  

E-Print Network [OSTI]

Massive bigravity models are interesting alternatives to standard cosmology. In most cases however these models have been studied for a simplified scenario in which both metrics take homogeneous and isotropic forms (Friedmann-Lema\\^{i}tre-Robertson-Walker; FLRW) with the same spatial curvatures. The interest to consider more general geometries arises in particular in view of the difficulty so far encountered in building stable cosmological solutions with homogeneous and isotropic metrics. Here we consider a number of cases in which the two metrics take more general forms, namely FLRW with different spatial curvatures, Lema\\^{i}tre, Lema\\^{i}tre-Tolman-Bondi (LTB), and Bianchi I, as well as cases where only one metric is linearly perturbed. We discuss possible consistent combinations and find that only some special cases of FLRW-Lema\\^{i}tre, LTB-LTB and FLRW-Bianchi I combinations give consistent, non-trivial solutions.

Henrik Nersisyan; Yashar Akrami; Luca Amendola

2015-02-13T23:59:59.000Z

Note: This page contains sample records for the topic "improvement performance metrics" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH  

E-Print Network [OSTI]

PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH Abstract. We use a wave packet the Simons Foundation (# 266371 to Hart Smith). 1 #12;2 HART F. SMITH H¨ormander's theorem [9] on propagation

Smith, Hart F.

462

Anode performance | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Anode performance New hybrid anode design to improve long-term performance of batteries PNNL researchers have developed a hybrid anode made of graphite and lithium that...

463

How Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data Center Infrastructure Systems  

SciTech Connect (OSTI)

Data centers are among the most energy intensive types of facilities, and they are growing dramatically in terms of size and intensity [EPA 2007]. As a result, in the last few years there has been increasing interest from stakeholders - ranging from data center managers to policy makers - to improve the energy efficiency of data centers, and there are several industry and government organizations that have developed tools, guidelines, and training programs. There are many opportunities to reduce energy use in data centers and benchmarking studies reveal a wide range of efficiency practices. Data center operators may not be aware of how efficient their facility may be relative to their peers, even for the same levels of service. Benchmarking is an effective way to compare one facility to another, and also to track the performance of a given facility over time. Toward that end, this article presents the key metrics that facility managers can use to assess, track, and manage the efficiency of the infrastructure systems in data centers, and thereby identify potential efficiency actions. Most of the benchmarking data presented in this article are drawn from the data center benchmarking database at Lawrence Berkeley National Laboratory (LBNL). The database was developed from studies commissioned by the California Energy Commission, Pacific Gas and Electric Co., the U.S. Department of Energy and the New York State Energy Research and Development Authority.

Mathew, Paul; Greenberg, Steve; Ganguly, Srirupa; Sartor, Dale; Tschudi, William

2009-04-01T23:59:59.000Z

464

Performance Improvement of Nanocatalysts by Promoter-Induced Defects in the Support Material: Methanol Synthesis over Cu/ZnO:Al  

Science Journals Connector (OSTI)

Addition of small amounts of promoters to solid catalysts can cause pronounced improvement in the catalytic properties. For the complex catalysts employed in industrial processes, the fate and mode of operation of promoters is often not well understood, ...

Malte Behrens; Stefan Zander; Patrick Kurr; Nikolas Jacobsen; Jürgen Senker; Gregor Koch; Thorsten Ressler; Richard W. Fischer; Robert Schlögl

2013-03-14T23:59:59.000Z

465

Investigation of Low-Cloud Characteristics Using Mesoscale Numerical Model Data for Improvement of Fog-Detection Performance by Satellite Remote Sensing  

Science Journals Connector (OSTI)

The comprehensive relationship between meteorological conditions and whether low water cloud touches the surface, particularly at sea, is examined with the goal of improving low-cloud detection by satellite. Gridpoint-value data provided by an ...

Haruma Ishida; Kentaro Miura; Teruaki Matsuda; Kakuji Ogawara; Azumi Goto; Kuniaki Matsuura; Yoshiko Sato; Takashi Y. Nakajima

2014-10-01T23:59:59.000Z

466

Inconsistencies in air quality metrics: 'Blue Sky' days and  

Science Journals Connector (OSTI)

International attention is focused on Beijing's efforts to improve air quality. The number of days reported as attaining the daily Chinese National Ambient Air Quality Standard for cities, called 'Blue Sky' days, has increased yearly from 100 in 1998 to 246 in 2007. However, analysis of publicly reported daily air pollution index (API) values for fine particulate matter (diameter?10 µm, PM10), indicates a discrepancy between the reported 'Blue Sky' days (defined as API?100, PM10?150 µg m?3) and published monitoring station data. Here I show that reported improvements in air quality for 2006–2007 over 2002 levels can be attributed to (a) a shift in reported daily PM10 concentrations from just above to just below the national standard, and (b) a shift of monitoring stations in 2006 to less polluted areas. I found that calculating daily Beijing API for 2006 and 2007 using data from the original monitoring stations eliminates a bias in reported PM10 concentrations near the 'Blue Sky' boundary, and results in a number of 'Blue Sky' days and annual PM10 concentration near 2002 levels in 2006 and 2007 (203 days and ~167 µg m?3 calculated for 2006—38 days fewer and a PM10 concentration ~6 µg m?3 higher than reported; 191 'Blue Sky' days and ~161 µg m?3 calculated for 2007—55 days fewer and a PM10 concentration ~12 µg m?3 higher than reported; 203 days and 166 µg m?3 were reported in 2002). Furthermore, although different pollutants were monitored before daily reporting began and less stringent standards were implemented in June 2000, reported annual average concentrations of particulate (diameter?100 µm, TSP) and nitrogen dioxide (NO2) indicate no improvement between 1998 and 2002. This analysis highlights the sensitivity of monitoring data in the evaluation of air quality trends, and the potential for the misinterpretation or manipulation of these trends on the basis of inconsistent metrics.

Steven Q Andrews

2008-01-01T23:59:59.000Z

467

A Comparison of Photoresist Resolution Metrics using 193 nm and EUV Lithography  

SciTech Connect (OSTI)

Image blur due to chemical amplification represents a fundamental limit to photoresist performance and manifests itself in many aspects of lithographic performance. Substantial progress has been made in linking image blur with simple resolution metrics using EUV lithography. In this presentation, they examine performance of 193 nm resist and EUV resist systems using modulation transfer function, corner rounding, and other resolution metrics. In particular, they focus on cross-comparisons in which selected EUV and 193 nm resist are evaluated using both EUV and 193 nm lithography. Simulation methods linking 193 nm and EUV performance will be described as well. Results from simulation indicate that image blur in current generation 193 nm photoresists is comparable to that of many EUV resists, but that ultra-low diffusion materials designs used in very high resolution EUV resists can result in substantially lower blur. In addition to detailing correlations between EUV and 193 nm experimental methods, they discuss their utility in assessing performance needs of future generation photoresists.

Jones, Juanita; Pathak, Piyush; Wallow, Thomas; LaFontaine, Bruno; Deng, Yunfei; Kim, Ryoung-han; Kye, Jongwook; Levinson, Harry; Naulleau, Patrick; Anderson, Chris

2007-08-20T23:59:59.000Z

468

Directional projection based image fusion quality metric  

Science Journals Connector (OSTI)

In the past few decades, image fusion and its performance evaluation have attracted considerable research attention. However, it is still hard to objectively evaluate the fusion performance due to the diversity of image sources and the motivations for ... Keywords: Image fusion, Local sensitive intensity, Radon transform

Richang Hong, Wenyi Cao, Jianxin Pang, Jianguo Jiang

2014-10-01T23:59:59.000Z

469

A New Approach in Urea Dosing to Improve Performance and Durability of SCR Systems for the Use in Off-Road Applications to Fulfill Tier 4 Final  

Broader source: Energy.gov [DOE]

Evaluation of influence of spray quality on urea decomposition and catalyst performance leads to new approach in dosing, using special nozzle and air-supply strategy

470

ESPC 2.0: How New Twists on Energy Savings Performance Contracting are Improving Energy Efficiency in U.S. Buildings  

Broader source: Energy.gov [DOE]

Join Better Buildings Challenge Partners and Allies to learn how Energy Savings Performance Contracting (ESPC) is moving beyond the traditional education and hospital sector markets.

471

Impact of Lossy Links on Performance of Multihop Wireless Networks  

E-Print Network [OSTI]

great progress. Singh et al. [16] propose several routing metrics and study their performance through sensors periodically report weather information. There is previous work, such as [5] and [6], that pro- pose heuristic link metrics to attempt to accommodate loss. However, in the previous work to optimize

Holte, Robert

472

The Utility of the Texas Award for Performance Excellence Criteria as a Framework for Assessing and Improving Performance Excellence in the Texas A&M Foundation: A Case Study  

E-Print Network [OSTI]

; the seven dimensions critical to high performing organizations are (a) leadership, (b) strategic planning, (c) customer-market focus, (d) knowledge and information management and analysis, (e) workforce focus, (f) process management, and (g) results... ........................................................................................................................... 200 Page xi LIST OF FIGURES FIGURE Page 1 The Baldrige Criteria for Performance Excellence Framework (2011-2012 Criteria for Performance Excellence (2011) ............................. 39 2 Texas A&M Foundation (TAMF) Strategic Plan...

Wine, Sherryl Leigh

2012-02-14T23:59:59.000Z

473

Improved Performance of Proton Exchange Membrane Fuel Cells with p-Toluenesulfonic Acid-Doped Co-PPy/C as Cathode Electrocatalyst  

E-Print Network [OSTI]

-PPy/C as Cathode Electrocatalyst Xianxia Yuan,, Xin Zeng, Hui-Juan Zhang, Zi-Feng Ma,*, and Chao-Yang Wang, and Materials Science and Engineering, The PennsylVania State UniVersity, UniVersity Park, PennsylVania 16802 costs and improve activity of non-noble-metal catalysts for oxygen reduction reaction (ORR

474

Improving the equilibrium performance of active carbons for separation processes by co-adsorption with low pressure solvent: application to carbon capture  

Science Journals Connector (OSTI)

The equilibrium performance of a novel gas separation process described quite recently (Sweatman in Chem. Eng. Sci. 65:3907, 2010...) called ‘pressure-swing wetting layer absorption’ here is investigated by means...

Martin B. Sweatman

2011-08-01T23:59:59.000Z

475

Building America Technlogy Solutions for New and Existing Homes: Improving the Field Performance of Natural Gas Furnaces, Chicago, Illinois (Fact Sheet)  

Broader source: Energy.gov [DOE]

In this project, the PARR research team examined the impact that common installation practices and age-induced equipment degradation may have on the installed performance of natural gas furnaces, as measured by steady-state efficiency and AFUE.

476

Exploration Cost and Time Metric | Open Energy Information  

Open Energy Info (EERE)

Exploration Cost and Time Metric Exploration Cost and Time Metric Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Exploration Cost and Time Metric Agency/Company /Organization: NREL Sector: Energy Focus Area: Geothermal Phase: Prepare a Plan Topics: Background analysis, Baseline projection, Resource assessment Resource Type: Application prototype, Online calculator User Interface: Website Website: openei.org/apps/xct_metric/ Country: United States Web Application Link: openei.org/apps/xct_metric/ Cost: Free OpenEI Keyword(s): Featured UN Region: Northern America Coordinates: 37.09024°, -95.712891° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.09024,"lon":-95.712891,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}