Powered by Deep Web Technologies
Note: This page contains sample records for the topic "base case analysis" 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.


1

A Conceptual Framework for Semantic Case-based Safety Analysis Olawande Daramola, Tor Stlhane  

E-Print Network (OSTI)

.biffl}@tuwien.ac.at Abstract Hazard and Operability (HAZOP) Analysis and Fail- ure Mode and Effect Analysis (FMEA) are among-based framework for safety analy- sis, which facilitates the reuse of previous HAZOP and FMEA experiences in order application. Key words: Safety analysis, HAZOP, FMEA, ontology, requirements, case-based reasoning, natural

2

Load flow analysis: Base cases, data, diagrams, and results  

SciTech Connect

This report describes how an electric utility system is modeled by using load flow techniques to establish a validated power flow case suitable for simulating and evaluating alternative system scenarios. Details of the load flow model are supported by additional technical and descriptive information intended to correlate modeled electrical system parameters with the corresponding physical equipment that makes up the system. Pictures and technical specifications of system equipment from the utility, public, or vendor are provided to support this association for many system components. The report summarizes the load flow model construction, simulation, and validation and describes the general capabilities of an information query system designed to access load flow parameters and other electrical system information.

Portante, E.C.; Kavicky, J.A.; VanKuiken, J.C.; Peerenboom, J.P.

1997-10-01T23:59:59.000Z

3

Study on intelligent contract information configuration and analysis by case-based reasoning  

Science Journals Connector (OSTI)

This paper presents an intelligent contract analysis and processing method, which can process a mass of contract information to meet the various demands of the enterprises. Here contracts are properly decomposed and configured according to their important ... Keywords: case-based reasoning (CBR), contract intelligent configuration, contract intelligent processing, data mining, knowledge database

Yi Sun; Jianrong Tan; Yalang Mao; Ming Lou

2006-04-01T23:59:59.000Z

4

A case-based distance model for multiple criteria ABC analysis  

Science Journals Connector (OSTI)

In ABC analysis, a well-known inventory planning and control technique, stock-keeping units (SKUs) are sorted into three categories. Traditionally, the sorting is based solely on annual dollar usage. The aim of this paper is to introduce a case-based multiple-criteria ABC analysis that improves on this approach by accounting for additional criteria, such as lead time and criticality of SKUs, thereby providing more managerial flexibility. Using decisions from cases as input, preferences over alternatives are represented intuitively using weighted Euclidean distances which can be easily understood by a decision maker. Then a quadratic optimization program finds optimal classification thresholds. This system of multiple criteria decision aid is demonstrated using an illustrative case study.

Ye Chen; Kevin W. Li; D. Marc Kilgour; Keith W. Hipel

2008-01-01T23:59:59.000Z

5

ANUDlSiTM-40 Load Flow Analysis: Base Cases, Data, Diagrams, and Results  

Office of Scientific and Technical Information (OSTI)

ANUDlSiTM-40 ANUDlSiTM-40 Load Flow Analysis: Base Cases, Data, Diagrams, and Results by E.C. Portante, J.A. Kavicky, J.C. VanKuiken, and J.P. Peerenboom Decision and Information Sciences Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 October 1997 Work sponsored by Navy Engineering Logistics Office This report is printed on recycled paper. @ 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, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness. or use- fulness of any information, apparatus, product, or process disclosed, or represents

6

Diagnostics based on thermodynamic analysis of performance of steam turbines: case histories  

SciTech Connect

The purpose of this paper is to describe some types of failures which have occurred with the ENEL stock of fossil-fuel steam turbines over the last 5--7 years. This paper also presents the corresponding thermodynamic analysis of turbine parameters which permitted failure diagnosis and pre-scheduled opening of the turbine. The examined failures concern: in-service rupture of the bell seal retainer nut between the SH steam inlet sleeves and the inner HP/IP cylinder, on turbines with a main steam inlet system with bell seals; incorrect assembly of pressure seal rings between steam inlet sleeves and the inner cylinder on turbines with a main steam inlet system with pressure seal rings during a scheduled outage; and steam flow path restriction in IP turbine inlet. Thermodynamic failure analysis and the subsequent analysis of turbine damage (mechanical and financial) enabled condition-based maintenance operations to be carried out.

Tirone, G.; Arrighi, L.; Bonifacino, L.

1996-12-31T23:59:59.000Z

7

Diagnostics based on thermodynamic analysis of performance of steam turbines: Case histories  

SciTech Connect

The purpose of this paper is to describe some types of failures which have occurred with the ENEL stock of fossil-fuel steam turbines over the last 5--7 years. This paper also presents the corresponding thermodynamic analysis of turbine parameters which permitted failure diagnosis and pre-scheduled opening of the turbine. The examined failures concern: (1) in-service rupture of the bell seal retainer nut between a SH steam inlet sleeve and the inner HP/IP cylinder, on turbines with a main steam inlet system with bell seals; (2) incorrect assembly of pressure seal rings between steam inlet sleeves and the inner cylinder on turbines with a main steam inlet system with pressure seal rings during a scheduled outage; (3) steam flow path restriction in IP turbine inlet; (4) steam flow path restriction in 1st HP turbine stage nozzles; and (5) steam flow path restriction in 2nd HP turbine stage vanes. Thermodynamic failure analysis and the subsequent analysis of turbine damage (mechanical and financial) enabled condition-based maintenance operations to be carried out.

Tirone, G.; Arrighi, L.; Bonifacino, L.

1998-07-01T23:59:59.000Z

8

The Levelized Cost of Energy (LCOE) of wave energy using GIS based analysis: The case study of Portugal  

Science Journals Connector (OSTI)

Abstract The main objective of this paper is to establish an economic modelling of wave energy through a Geographical Information System (GIS). Furthermore, this method has been tested for the particular case of the Portuguese coast. It determines the best sea areas to install wave energy converters in this region, using spatial analysis of the Levelized Cost of Energy (LCOE). Several economic parameters, as capital or O&M costs, have been considered. In addition, a sensitivity analysis has been performed by varying the discount rate in three different scenarios. Several types of physical restrictions have been taken into account: bathymetry, submarine electrical cables, seabed geology, environmental conditions, protected areas in terms of heritage, navigation areas, seismic fault lines, etc. Spatial operations have been carried out to complete the procedure, using Model Builder of GIS software. Results indicate the most suitable areas in economic terms in Portugal to install wave energy devices.

Laura Castro-Santos; Geuffer Prado Garcia; Ana Estanqueiro; Paulo A.P.S. Justino

2015-01-01T23:59:59.000Z

9

A case study of condition based maintenance modelling based upon the oil analysis data of marine diesel engines using stochastic filtering  

Science Journals Connector (OSTI)

This paper presents a case study of condition based maintenance modelling based on measured metal concentrations observed in oil samples of a fleet of marine diesel engines. The decision model for optimising the replacement time of the diesel engines conditional on observed measurements is derived and applied to the case discussed. We described the datasets, which were cleaned and re-organised according to the need of the research. The residual time distribution required in the decision model was formulated using a technique called stochastic filtering. Procedures for model parameter estimation are constructed and discussed in detail. The residual life model presented has been fitted to the case data, and the modelling outputs are discussed.

Wenbin Wang; B. Hussin; Tim Jefferis

2012-01-01T23:59:59.000Z

10

Wind speed and power density analysis based on Weibull and Rayleigh distributions (a case study: Firouzkooh county of Iran)  

Science Journals Connector (OSTI)

Abstract The present study aimed to analyze the wind speed data of Firouzkooh region. For this purpose, the wind speed data for a 3-h period measuring over a 10-year period (2001–2010) were analyzed to calculate and estimate the wind power generation potential. Similar trends of the wind speeds were seen in different years where the highest and the lowest mean wind speeds belonged to May 2010 and June 2002, respectively. The diurnal wind speed analysis demonstrated that the fastest winds blew from 6 am to 3 pm. Weibull and Rayleigh distribution functions were applied to find out the best fitting tool to the wind speed data. Results showed that Weibull and Rayleigh distribution functions can fit the actual values of wind speed well with almost the same coefficient of determination value (R2) of 0.97. The average values of wind power based on mean and root mean cube speed approaches were 203 and 248 W m?2 year?1, respectively indicating that Firouzkooh region stands in class 4 (which is a suitable area for wind turbine establishment). Finally, wind rose diagram revealed that the prevailing wind direction falls in the sector between 180° and 270° clockwise from North.

S.H. Pishgar-Komleh; A. Keyhani; P. Sefeedpari

2015-01-01T23:59:59.000Z

11

Strategic backdrop analysis for fossil fuel planning. Task 2 report (New Task Series), The Base Case. Report 473-117-08/01  

SciTech Connect

This report describes a base case analysis performed using the strategic backdrop analytical framework developed by The Futures Group to facilitate fossil fuel planning within the Department of Energy. It builds upon the data base compiled in the default case previously submitted but uses a different set of energy technology assumptions. Objectives of the strategic backdrop analysis project are: (1) to delineate alternative socioeconomic futures or target worlds for the United States and to derive, for each world, the amount of energy needed to sustain its level of economic activity and lifestyle, assuming no technological changes; (2) to construct an analytical framework that accounts for the flow of energy from the disaggregated end-use target demand sectors back through the distribution and conversion processes to primary resource requirements; (3) to use this framework 1) to analyze how alternative government policies and associated new technologies can change the primary resource needs and fuel mix while still providing the same level of end-use energy service for the target world, and 2) to highlight resource constraints, program inconsistencies, and economic, environmental, and social implications; (4) to transfer to DOE personnel the methodology for generating energy targets and accounting for important characteristics of alternative energy policies and technologies.

Not Available

1980-08-01T23:59:59.000Z

12

Process Engineering Division Texaco Gasifier IGCC Base Cases  

NLE Websites -- All DOE Office Websites (Extended Search)

Engineering Division Engineering Division Texaco Gasifier IGCC Base Cases PED-IGCC-98-001 July 1998 Latest Revision June 2000 PREFACE This report presents the results of an analysis of three Texaco Gasifier IGCC Base Cases. The analyses were performed by W. Shelton and J. Lyons of EG&G. EXECUTIVE SUMMARY 1. Process Descriptions 1.1 Texaco Gasifier 1.2 Air Separation Plant (ASU) 1.3 Gas Cooling/Heat Recovery/Hydrolysis/Gas Saturation (Case 1 and Case 2) 1.4 Cold Gas Cleanup Unit (CGCU) (Case 1 and Case 2) 1.5 Fine Particulate Removal/ Chloride Guard Bed - Case 3 1.6 Transport Desulfurization HGCU - Case 3 1.7 Sulfuric Acid Plant - Case 3 1.8 Gas Turbine 1.9 Steam Cycle 1.10 Power Production 2. Simulation Development 3. Cost of Electricity Analysis

13

ARM - Field Campaign - CASES Data Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsCASES Data Analysis govCampaignsCASES Data Analysis Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : CASES Data Analysis 2004.07.01 - 2009.06.30 Lead Scientist : Margaret LeMone Description CASES Data Analysis: Potential Benefits Diurnal variation of the Atmospheric Boundary Layer. Taken together, the two Cooperative Atmosphere Surface Exchange Study (CASES) field programs, CASES-97 (morning and evening) and CASES-99 (evening, night, morning) provide a robust dataset for looking at the diurnal changes of the wind, temperature, humidity and their vertical transports near the ground and through the lowest few kilometers where surface effects are directly felt - the atmospheric boundary layer. Much of our observational knowledge

14

Symbolic Test Selection Based on Approximate Analysis  

E-Print Network (OSTI)

Symbolic Test Selection Based on Approximate Analysis Bertrand Jeannet, Thierry J´eron, Vlad Rusu}@irisa.fr Abstract. This paper addresses the problem of generating symbolic test cases for testing the conformance. The challenge we consider is the selection of test cases according to a test purpose, which is here a set

Paris-Sud XI, Université de

15

Geographically-Based Infrastructure Analysis  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Geographically-Based Infrastructure Analysis given by Keith Parks of the National Renewable Energy Laboratory during the DOE Hydrogen Transition Analysis Workshop on January 26, 2006.

16

Colorado Vehicle Fleets Case Study Analysis  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Experiences with Compressed Natural Gas in Experiences with Compressed Natural Gas in Colorado Vehicle Fleets Case Study Analysis August 2012 Case Study Analysis August 2012 2 Acknowledgements The Colorado Energy Office would like to thank the following individuals and organizations for their participation in the case studies: Jay Valentine, City of Grand Junction Joseph Noorlag, Republic Services Victor Lovato, Denver International Airport The Colorado Energy Office would also like to thank the following people for their review and input to this document: Wendy DaFoe, National Renewable Energy Laboratory John Gonzales, National Renewable Energy Laboratory Alexine Hazarian, Encana Natural Gas Inc. Paul Kerkhoven, NGV America Charlie Kerr, Cummins-Westport Inc. Sheble McConnellogue, Northern Colorado Clean Cities

17

Geographically-Based Infrastructure Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Infrastructure Infrastructure Analysis Margo Melendez & Keith Parks January 26, 2006 Geographically-Based Infrastructure Analysis (GIA) Utilizes GIS, geographically segregated data, and transition expertise to add the spatial component to infrastructure analysis NREL Core Competencies * Geographic data, tools, and expertise * Flexibility to address a wide array of transition issues NREL Capability Diagram Geographically-based Infrastructure Analysis GIS Transportation Technologies & Systems Electric & Hydrogen Technologies Energy Analysis Office GIA Activities Previous and Ongoing * HYDS ME - Evaluates best infrastructure options * Interstate Infrastructure Analysis - Minimal infrastructure to facilitate interstate travel during transition New Analyses * Quantifying transitional hydrogen demand

18

Traversal, Case Analysis, and Lowering for C++ Program Analysis  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . . . . 11 II TUTORIAL : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 13 A. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 B. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 C. \\Hello, Unit... are and leaves the why for the discussion in Chapter III. Also, these goals are introduced by metaphor and example, saving their realization in the Filter library for the tutorial in Chapter II. 1. Traversal and case analysis The rst functional goal...

Wagner, Luke A.

2010-01-14T23:59:59.000Z

19

Selecting cases from nuclear families for case-control association analysis  

Science Journals Connector (OSTI)

We examine the efficiency of a number of schemes to select cases from nuclear families for case-control association analysis using the Genetic Analysis Workshop 14 simulated dataset. We show that with this simula...

Rachael M Moore; Tracy Pinel; Jing Hua Zhao; Ruth March; Ansar Jawaid

2005-12-01T23:59:59.000Z

20

Intro to Surrogate-Based Optimization Data fit case  

E-Print Network (OSTI)

Intro to Surrogate-Based Optimization ďż˝ Data fit case ďż˝ Model hierarchy case ďż˝ ROM case Algorithmic ďż˝ Hybrid POD space mapping Sequence of trust regions #12;Trust Region SBO ďż˝ ROM Case ROM surrogates. proc.) ROMs in SBO: Key issue is accurately capturing effect of parameter changes. Many ROM-based opt

Note: This page contains sample records for the topic "base case analysis" 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

Web Services-Based Digital Library as a CSCL Space Using Case-Based Reasoning  

Science Journals Connector (OSTI)

This study proposes a Web Services-based Digital Libraries (DLs) using Case-based Reasoning as a space for collaborative learning. In the Digital Library environment, cases were designed on the basis ... a role a...

Soo-Jin Jun; Sun-Gwan Han; Hae-Young Kim

2006-01-01T23:59:59.000Z

22

Knowledge-Intensive Case-Based Reasoning and Intelligent Tutoring  

E-Print Network (OSTI)

Knowledge-Intensive Case-Based Reasoning and Intelligent Tutoring Agnar Aamodt Department Norway agnar.aamodt@idi.ntnu.no Abstract. Knowledge-intensive CBR assumes that cases are enriched with general domain knowledge. In the system Creek, developed in our group, there is a strong coupling between

Aamodt, Agnar

23

Improved Efficiency of Oil Well Drilling through Case Based Reasoning  

Science Journals Connector (OSTI)

A system that applies a method of knowledge-intensive case-based reasoning, for repair and prevention of unwanted events in the domain of offshore oil well drilling, has been developed in cooperation with an oil ...

Paal Skalle; Jostein Sveen; Agnar Aamodt

2000-01-01T23:59:59.000Z

24

Learning Neuroscience: An Interactive Case-Based Online Network (ICON)  

Science Journals Connector (OSTI)

We have developed an interactive case-based online network (ICON) that provides a new learning environment and ... one of Harvard's interfaculty science initiatives. ICON takes advantage of this cross-disciplinar...

James J. Quattrochi; Susan Pasquale…

2002-03-01T23:59:59.000Z

25

Model-Based Dependability Analysis of Programmable Drug Infusion Pumps  

E-Print Network (OSTI)

Model-Based Dependability Analysis of Programmable Drug Infusion Pumps Sriram Sankaranarayanan.lastname@colorado.edu Abstract. Infusion pumps are commonly used in home/hospital care to inject drugs into a patient a case-study involving an infusion pump used to manage pain through the infusion of analgesic drugs

Sankaranarayanan, Sriram

26

Ontology-Based Network Management: Study Cases and Lessons Learned  

Science Journals Connector (OSTI)

Ontology based network management has recently evolved from a theoretical proposal to a more mature technology. As such, it is now being applied in many research projects in a number of different network management and security scenarios. This application ... Keywords: Autonomic management, Lessons learned, Network monitoring, Network security, OWL, Ontology-based network management, SWRL, Study case

Jorge E. López De Vergara; Antonio Guerrero; Víctor A. Villagrá; Julio Berrocal

2009-09-01T23:59:59.000Z

27

Evaluation of an Interactive Case-based Online Network (ICON) in a Problem Based Learning Environment  

Science Journals Connector (OSTI)

Purpose...: This study sought to assess the introduction of a web-based innovation in medical education that complements traditional problem-based learning curricula. Utilizing the case method as...

Arif N. Nathoo; Patricia Goldhoff…

2005-08-01T23:59:59.000Z

28

Trace analysis of atmospheric organic bases  

E-Print Network (OSTI)

analysis of atmospheric organic bases were investigated; the study included (1) the analysis of submarine charcoal filter bed samples for nitrogen bases and (2) the use of metallic tetraphenylporphines (TPP) as specific adsorbents for atmospheric... gas chromatography (GC) and GC-mass spectrometry (GC-MS). The isolation procedure provided acceptable reproducibi lity in the determination of trace amounts of nitrogen bases in the submarine environment. Several metallic TPP adsorbents were...

Clark, Dwayne C.

2012-06-07T23:59:59.000Z

29

Evaluating Case-based Decision Theory: Predicting Empirical Patterns of Human Classification Learning  

E-Print Network (OSTI)

Evaluating Case-based Decision Theory: Predicting Empirical Patterns of Human Classification which calculates an agent's optimal behavior according to Case- based Decision Theory (Gilboa behavior of this program (and therefore Case-based Decision Theory) correctly predicts the empirically

Tesfatsion, Leigh

30

Case{based Meta Learning: Sustained Learning supported by  

E-Print Network (OSTI)

Case{based Meta Learning: Sustained Learning supported by a Dynamically Biased Version Space Jacky{recognized that in practical in- ductive learning systems the search for a concept must be heavily biased. In addi- tion is sustained learn- ing, allowing transfer from known tasks to new ones. Previous work on dynamic bias has

Baltes, Jacky

31

Well casing-based geophysical sensor apparatus, system and method  

DOE Patents (OSTI)

A geophysical sensor apparatus, system, and method for use in, for example, oil well operations, and in particular using a network of sensors emplaced along and outside oil well casings to monitor critical parameters in an oil reservoir and provide geophysical data remote from the wells. Centralizers are affixed to the well casings and the sensors are located in the protective spheres afforded by the centralizers to keep from being damaged during casing emplacement. In this manner, geophysical data may be detected of a sub-surface volume, e.g. an oil reservoir, and transmitted for analysis. Preferably, data from multiple sensor types, such as ERT and seismic data are combined to provide real time knowledge of the reservoir and processes such as primary and secondary oil recovery.

Daily, William D. (Livermore, CA)

2010-03-09T23:59:59.000Z

32

Case Study - Hill Air Force Base, Utah | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hill Air Force Base, Utah Hill Air Force Base, Utah Case Study - Hill Air Force Base, Utah October 7, 2013 - 2:00pm Addthis Overview Energy savings performance contracting at Hill Air Force Base generated much interest during a recent training session on energy management that downlinked 12 Department of Defense sites. Energy systems in 940 buildings on the Base will be upgraded under an 18-year ESPC between the Government and the energy service company, CES/Way. Improvements are distributed over five task orders that will be completed in five years, with CES/Way providing $2.5 million in up-front costs for the first two task orders. Utah Power & Light will provide $8 million in rebates to help cover the contractor's initial investment, maintenance services, and interest costs.

33

Event-based Approach to Money Laundering Data Analysis and Visualization  

E-Print Network (OSTI)

Event-based Approach to Money Laundering Data Analysis and Visualization Tat-Man Cheong Faculty, an event-based approach to money laundering data analysis and visualization is proposed in this paper. The effectiveness of the proposed method is demonstrated on a money laundering case from Taiwan. Categories

Si, Yain Whar "Lawrence"

34

An analysis of empirical cases of community wind in Oregon  

Science Journals Connector (OSTI)

Recently, a new type of ownership has emerged in the wind energy sector in the U.S. that is referred to as community wind. With the fact that there is little literature on empirical experience of such smaller community based projects, this paper attempts to present seven community wind cases in Oregon to identify opportunities and barriers and so to provide practical information to those who are interested in developing community wind.

Yao Yin

2013-01-01T23:59:59.000Z

35

Usage of Case-based Reasoning in FMEA-driven Software  

Science Journals Connector (OSTI)

Abstract Failure Mode and Effect Analysis (FMEA) is among the most widely used safety analysis procedures in the various industries. The procedure is generally perceived as complex and time-consuming, hindering an effective reuse of previous knowledge. In this paper we present an innovative usage of knowledge system into FMEA process using the Case-based reasoning to reduce the time and effort associated with this analysis. Knowledge system is built to serve multi-projects work that nowadays are in place in any manufacturing or services provider, and knowledge must be retained and reused at the company level and not only at project level. Collaboration is assured trough web-based GUI that supports multiple users access at any time. Initial results confirm the viability of this system for industrial application.

Gabriela Cândea; Stefania Kifor; Carmen Constantinescu

2014-01-01T23:59:59.000Z

36

Geographically-Based Infrastructure Analysis for California  

NLE Websites -- All DOE Office Websites (Extended Search)

Geographically-Based Infrastructure Geographically-Based Infrastructure Analysis for California Joan Ogden Institute of Transportation Studies University of California, Davis Presented at the USDOE Hydrogen Transition Analysis Meeting Washington, DC August 9-10, 2006 Acknowledgments UC Davis Researchers: Michael Nicholas Dr. Marc Melaina Dr. Marshall Miller Dr. Chris Yang USDOE: Dr. Sig Gronich Research support: USDOE; H2 Pathways Program sponsors at UC Davis * Refueling station siting and sizing are key aspects of designing H2 infrastructure during a transition * Initial H2 stations may be co-located with vehicle fleets * Wider consumer adoption of H2 vehicles depends on fuel availability and cost (which are related to station number, size and location), + other factors. * Decision when and where to deploy network

37

Web-based learning: an empirical analysis  

Science Journals Connector (OSTI)

Web-Based Learning (WBL) and training have become popular among academic institutions and companies. It has led to a widespread debate over whether technology-based learning alone will be a sufficient approach in the future or whether technology will simply complement traditional methods of learning. This debate has led to several studies on the application and effectiveness of WBL and its pros and cons with regard to effectiveness in teaching and learning. An empirical analysis was conducted with the help of data collected using a standard questionnaire from students in Hong Kong universities. The objective of this research was to investigate the extent to which WBL is popular and effective in Hong Kong. The results of the literature survey and empirical analysis helped to identify the barriers to and critical success factors in the successful application of WBL, and to develop a generic framework for WBL that could be useful in other environments. A summary of findings and conclusions are presented.

A. Gunasekaran; E.W.T. Ngai

2006-01-01T23:59:59.000Z

38

Chiller condition monitoring using topological case-based modeling  

SciTech Connect

To increase energy efficiency and economy, commercial building projects now often utilize centralized, shared sources of heat such as district heating and cooling (DHC) systems. To maintain efficiency, precise monitoring and scheduling of maintenance for chillers and heat pumps is essential. Low-performance operation results in energy loss, while unnecessary maintenance is expensive and wasteful. Plant supervisors are responsible for scheduling and supervising maintenance. Modeling systems that assist in analyzing system deterioration are of great benefit for these tasks. Topological case-based modeling (TCBM) (Tsutsui et al. 1993; Tsutsui 1995) is an effective tool for chiller performance deterioration monitoring. This paper describes TCBM and its application to this task using recorded historical performance data.

Tsutsui, Hiroaki [Yamatake-Honeywell Co. Ltd., Yokohama (Japan). Advanced Technology Center; Kamimura, Kazuyuki [Yamatake-Honeywell Co. Ltd., Tokyo (Japan). Building Systems Div.

1996-11-01T23:59:59.000Z

39

A Case Study on a GQM-Based Quality Model for a Domain-Specific Reference Model Catalogue to Support Requirements Analysis within Information Systems Development in the German Energy Market  

Science Journals Connector (OSTI)

Within this contribution, an approach on a goal-question-metric (GQM) based quality model for a domain-specific reference model catalogue is introduced. First of all, we motivate and present an ontology-based ref...

José M. González; Peter Fettke…

2011-01-01T23:59:59.000Z

40

Federal Energy Management Program: Case Study - Hill Air Force Base, Utah  

NLE Websites -- All DOE Office Websites (Extended Search)

Case Study - Hill Case Study - Hill Air Force Base, Utah to someone by E-mail Share Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Facebook Tweet about Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Twitter Bookmark Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Google Bookmark Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Delicious Rank Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Digg Find More places to share Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on AddThis.com... Energy Savings Performance Contracts Assistance & Contacts Resources Laws & Regulations Energy Service Companies Awarded Projects

Note: This page contains sample records for the topic "base case analysis" 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

Towards Automated Deduction in Blackmail Case Analysis with Forensic Lucid  

E-Print Network (OSTI)

This work-in-progress focuses on the refinement of application of the intensional logic to cyberforensic analysis and its benefits are compared with the finite-state automata approach. This work extends the use of the scientific intensional programming paradigm onto modeling and implementation of a cyberforensics investigation process with the backtrace of event reconstruction, modeling the evidence as multidimensional hierarchical contexts, and proving or disproving the claims with it in the intensional manner of evaluation. This is a practical, context-aware improvement over the finite state automata (FSA) approach we have seen in the related works. As a base implementation language model we use in this approach is a new dialect of the Lucid programming language, that we call Forensic Lucid and in this paper we focus on defining hierarchical contexts based on the intensional logic for the evaluation of cyberforensic expressions.

Mokhov, Serguei A; Debbabi, Mourad

2009-01-01T23:59:59.000Z

42

NETL - Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis...  

Open Energy Info (EERE)

- Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis 2005 Baseline Model Jump to: navigation, search Tool Summary LAUNCH TOOL Name: NETL - Petroleum-Based Fuels Life Cycle...

43

A case study on effectiveness of structural reliability analysis in nuclear reactor safety assessment  

Science Journals Connector (OSTI)

Problems on reliability of structural integrity occupy an important position in various aspects of nuclear reactor safety. In the present paper, an effective method for quantitative evaluation of structural reliability based on ‘stress strength model’ is developed with the objectives of taking a larger number of factors into the evaluation than before and giving useful results within moderate computing time. The method is applied to the reliability analysis of PWR pressure vessels. The results show the relative importance of inspection as well as the parameter uncertainty for assuring the reliability of the structure, although analysis is limited within the scope of linear elastic fracture mechanics (LEFM). This case study also shows that the analysis of structural reliability is effective for safety assessment of nuclear power plants in general and possibly for the improvements of the consistency in the design code.

A. Yamaguchi; S. Kondo; Y. Togo

1983-01-01T23:59:59.000Z

44

Topology-based Feature Definition and Analysis  

SciTech Connect

Defining high-level features, detecting them, tracking them and deriving quantities based on them is an integral aspect of modern data analysis and visualization. In combustion simulations, for example, burning regions, which are characterized by high fuel-consumption, are a possible feature of interest. Detecting these regions makes it possible to derive statistics about their size and track them over time. However, features of interest in scientific simulations are extremely varied, making it challenging to develop cross-domain feature definitions. Topology-based techniques offer an extremely flexible means for general feature definitions and have proven useful in a variety of scientific domains. This paper will provide a brief introduction into topological structures like the contour tree and Morse-Smale complex and show how to apply them to define features in different science domains such as combustion. The overall goal is to provide an overview of these powerful techniques and start a discussion how these techniques can aid in the analysis of astrophysical simulations.

Weber, Gunther H.; Bremer, Peer-Timo; Gyulassy, Attila; Pascucci, Valerio

2010-12-10T23:59:59.000Z

45

Knowledge-Intensive Case-Based Reasoning in CREEK Agnar Aamodt  

E-Print Network (OSTI)

Knowledge-Intensive Case-Based Reasoning in CREEK Agnar Aamodt Department of Computer.aamodt@idi.ntnu.no Abstract. Knowledge-intensive CBR assumes that cases are enriched with general domain knowledge. In CREEK, there is a very strong coupling between cases and general domain knowledge, in that cases are embedded within

Aamodt, Agnar

46

Exergoeconomic analysis of geothermal district heating systems: A case study  

Science Journals Connector (OSTI)

An exergoeconomic study of geothermal district heating systems through mass, energy, exergy and cost accounting analyses is reported and a case study is presented for the Salihli geothermal district heating system (SGDHS) in Turkey to illustrate the present method. The relations between capital costs and thermodynamic losses for the system components are also investigated. Thermodynamic loss rate-to-capital cost ratios are used to show that, for the devices and the overall system, a systematic correlation appears to exist between capital cost and exergy loss (total or internal), but not between capital cost and energy loss or external exergy loss. Furthermore, a parametric study is conducted to determine how the ratio of thermodynamic loss rate to capital cost changes with reference temperature and to develop a correlation that can be used for practical analyses. The correlations may imply that devices in successful district heating systems such as the SGDHS are configured so as to achieve an overall optimal design, by appropriately balancing the thermodynamic (exergy-based) and economic (cost) characteristics of the overall systems and their devices.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer; Marc A. Rosen

2007-01-01T23:59:59.000Z

47

A formal analysis of requirements-based testing  

Science Journals Connector (OSTI)

The aim of requirements-based testing is to generate test cases from a set of requirements for a given system or piece of software. In this paper we propose a formal semantics for the generation of test cases from requirements by revising and extending ... Keywords: coverage metrics, requirements-based testing

Charles Pecheur; Franco Raimondi; Guillaume Brat

2009-07-01T23:59:59.000Z

48

Prioritizing JUnit Test Cases: An Empirical Assessment and Cost-Benefits Analysis  

E-Print Network (OSTI)

Prioritizing JUnit Test Cases: An Empirical Assessment and Cost-Benefits Analysis Hyunsook Do - Lincoln {dohy,grother,akinneer}@cse.unl.edu August 2, 2005 Abstract Test case prioritization provides a way to run test cases with the highest priority earliest. Numerous empirical studies have shown

Rothermel, Gregg

49

Introduction to the Computational Intelligence Special Issue to Appear in 2001 Maintaining Case-Based Reasoning Systems  

E-Print Network (OSTI)

-Based Reasoning Systems Case-based reasoning CBR is the process of reasoning and learning by storing prior cases to sustaining and improving the e ciency and solution quality of CBR systems as their 1 #12;case-bases grow with the overall case-based reasoning process. Reinartz, Iglezakis, and Roth-Berghofer's article On Quality

Leake, David B.

50

Two Case Studies on Vision-based Moving Objects Measurement  

E-Print Network (OSTI)

the two counterparts in robustness, speed, and accuracy. In the second case, we used a camera-mirror system to measure the swimming motion of a live fish and the extracted motion data was used to drive animation of fish behavior. The camera-mirror system...

Zhang, Ji

2012-10-19T23:59:59.000Z

51

Cost-sensitive case-based reasoning using a genetic algorithm: Application to medical diagnosis  

Science Journals Connector (OSTI)

Objective: The paper studies the new learning technique called cost-sensitive case-based reasoning (CSCBR) incorporating unequal misclassification cost into CBR model. Conventional CBR is now considered as a suitable technique for diagnosis, prognosis ... Keywords: Breast cancer, Cost-sensitive case-based reasoning, Diabetes, Genetic algorithm, Heart disease, Hepatitis, Medical diagnosis, Misclassification cost

Yoon-Joo Park; Se-Hak Chun; Byung-Chun Kim

2011-02-01T23:59:59.000Z

52

Agent-Based Modeling and Simulation for Hydrogen Transition Analysis  

Energy.gov (U.S. Department of Energy (DOE))

Presentation on Agent-Based Modeling and Simulation for Hydrogen Transition Analysis given by Marianne Mintz of ANL during the DOE Hydrogen Transition Analysis Workshop on January 26, 2006.

53

The Knowledge Base Evolution in Biotechnology: A Social Network Analysis.  

E-Print Network (OSTI)

The Knowledge Base Evolution in Biotechnology: A Social Network Analysis. Jackie Krafft*, Francesco of the biotechnology sector. Knowledge is here considered a collective good represented as a co

Paris-Sud XI, Université de

54

The Knowledge Base Evolution in Biotechnology: A Social Network Analysis.  

E-Print Network (OSTI)

The Knowledge Base Evolution in Biotechnology: A Social Network Analysis. Jackie Kraffta dynamics of the biotechnology sector. Knowledge is here considered a collective good represented as a co

Paris-Sud XI, Université de

55

Posters Preliminary Analysis of Ground-Based Microwave and Infrared...  

NLE Websites -- All DOE Office Websites (Extended Search)

3 Posters Preliminary Analysis of Ground-Based Microwave and Infrared Radiance Observations During the Pilot Radiation OBservation Experiment E. R. Westwater, Y. Han, J. H....

56

Reusability based on Life Cycle Sustainability Assessment: Case Study on WEEE  

Science Journals Connector (OSTI)

Abstract Reuse is one of the key strategies of Waste Electrical and Electronic Equipment (WEEE) recycling system in China. Reuse can help realize eco-efficient and sustainable WEEE management, with environmentally friendly materials recovery. At present, reusability of products and components is determined only by the products functional situation or the economic cost benefit analysis. It does not cover all the three pillars of sustainability, including environment, economy and society. In this study, the emerging integrated method, Life Cycle Sustainability Assessment (LCSA), is employed to measure reusability of typical electrical and electronic products and components. The results of case studies show that, LCSA based reusability of typical electrical and electronic products and components will help improve WEEE management policy.

Bin Lu; Bo Li; Lihui Wang; Jianxin Yang; Jingru Liu; Xi Vincent Wang

2014-01-01T23:59:59.000Z

57

Cost-benefit analysis on green building energy efficiency technology application: A case in China  

Science Journals Connector (OSTI)

Abstract In order to initiate economic evaluation of green buildings and foster their development, this article conducts the cost–benefit evaluation of energy efficiency technology application (EETA) on green buildings in China. Based on the economic evaluation theory of construction project (EETCP), the authors first establishes the theoretical framework system of cost–benefit evaluation of the EETA on green buildings and then develops the analysis methods of incremental costs and quantitative calculation formula of incremental benefits of the EETA on green buildings. Using these theories and methods, this article takes the Wanke City project in China as a study case, conducts the cost–benefit empirical analysis of the EETA on green buildings, and draws the following important conclusions: (1) the incremental costs of the EETA account for a large proportion of total incremental costs of green buildings, which are more than 50% in this case; (2) the EETA on green buildings can bring incremental economic benefits, as well as environmental benefits; (3) if only consider the incremental economic benefits of the EETA on green buildings, the financial evaluation indexes show green buildings do not have market investment potential; (4) among all the factors influencing the financial evaluation results of the EETA on green buildings, power price is the most sensitive factor, followed by the unit incremental costs, and the lifetime has the smallest influence.

Yuming Liu; Xia Guo; Feiling Hu

2014-01-01T23:59:59.000Z

58

Global Trade Analysis Project (GTAP) Data Base | Open Energy Information  

Open Energy Info (EERE)

Global Trade Analysis Project (GTAP) Data Base Global Trade Analysis Project (GTAP) Data Base Jump to: navigation, search Tool Summary Name: GTAP 6 Data Base Agency/Company /Organization: Purdue University Sector: Energy Topics: Policies/deployment programs, Co-benefits assessment, - Macroeconomic, Pathways analysis Resource Type: Dataset Website: www.gtap.agecon.purdue.edu/databases/v6/default.asp GTAP 6 Data Base Screenshot References: GTAP Data Base[1] "The GTAP Data Base is a fully documented, publicly available global data base which contains complete bilateral trade information, transport and protection linkages among 113 regions for all 57 GTAP commodities for a single year. " GTAP 6 Data Base "Includes: Updated data base corresponds to the global economy in 2001 Additional regional disaggregation (87 regions and 57 sectors),

59

Complex component analysis of shear-wave splitting: case studies  

Science Journals Connector (OSTI)

......geophones (Bush & Crampin 1987). We shall process only the S1 offset at 272m. This case...of the two shear-wave arrivals. The process depends on the coherency of the polarization...azimuthal anisotropy, 56th Ann. h i . SEG Mtg, Houston, Expanded Abstracts, pp......

Xiang-Yang Li; Stuart Crampin

1991-12-01T23:59:59.000Z

60

A Dynamical Systems Analysis of Resonant Flybys: Ballistic Case  

Science Journals Connector (OSTI)

In this analysis, resonant flybys were explored within the context of the circular restricted three-body problem using dynamical systems theory. The first step in this process involved the construction of a fl...

Rodney L. Anderson; Martin W. Lo

2011-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Wind energy integration into future energy systems based on conventional plants – The case study of Croatia  

Science Journals Connector (OSTI)

Abstract Croatian energy system is currently highly import-dependent and integration of a high share of renewable energy sources needs to be considered. This paper studies eight scenarios; three proposed by the Croatian Energy Strategy, one proposed by the Indicative medium-term development plan of Croatia’s Transmission System Operator, and four alternative scenarios that propose extensive construction of hydro, wind and solar power plants in Croatia. Calculations have been conducted in the EnergyPLAN model based on modeled long term energy demand projections in the NeD model, with 2009 as the base year and a scope ranging until the year 2030. Each of the eight proposed scenarios is observed through different hydrological conditions while analyzing import dependency, economic costs and CO2 emissions. After the initial calculations, additional analysis of intensive wind power penetration has been conducted. The Results show that energy systems with a larger share of conventional and nonflexible power plants have more difficulty adjusting to wind power plants production. In case of a high share penetration of wind in a system based upon such power plants, the feasibility of investing in new large combustion plants that will spend most of the time working on minimum capacity is brought into question.

Tin Cerovac; Boris ?osi?; Tomislav Pukšec; Neven Dui?

2014-01-01T23:59:59.000Z

62

A case study: demands on component-based development  

Science Journals Connector (OSTI)

Building software systems with reusable components brings many advantages. The development becomes more efficient, the realibility of the products is enhanced, and the maintenance requirement is significantly reduced. Designing, developing and maintaining ... Keywords: architecture, component-based development, development environment, reuse, standard components

Ivica Crnkovic; Magnus Larsson

2000-06-01T23:59:59.000Z

63

UML based risk analysis -Application to a medical J. Guiochet  

E-Print Network (OSTI)

from unacceptable risk" [8]. Therefore it is necessary to reduce the risk to an acceptable levelUML based risk analysis - Application to a medical robot J. Guiochet GRIMM-ISYCOM/LESIA, University approach, based on the risk concept in order to guide designers along the safety analysis of such complex

Guiochet, Jérémie

64

Analysis of a case of internal contamination with cobalt radioisotopes  

Science Journals Connector (OSTI)

......Prague, Czech Republic 3 Nuclear Power Plant Dukovany...occurs time to time at nuclear power plants. Intakes...intakes based on various datasets (whole body counting...occurs time to time at nuclear power plants. Intakes...intakes based on various datasets (whole body counting......

T. Vrba; I. Malatova; B. Jurochova

2007-07-01T23:59:59.000Z

65

Geographically-Based Infrastructure Analysis for California  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by Joan Ogden of the University of California at the 2010 - 2025 Scenario Analysis for Hydrogen Fuel Cell Vehicles and Infrastructure Meeting on August 9 - 10, 2006 in Washington, D.C.

66

Geographically Based Hydrogen Demand and Infrastructure Analysis  

Energy.gov (U.S. Department of Energy (DOE))

Presentation by NREL's Margo Melendez at the 2010 - 2025 Scenario Analysis for Hydrogen Fuel Cell Vehicles and Infrastructure Meeting on August 9 - 10, 2006 in Washington, D.C.

67

Help desk architecture for a u-learning system characterized by the use of probabilistic reasoning-based search of a case base  

Science Journals Connector (OSTI)

This paper proposes an architecture for a help desk for a u-learning system. The architecture is characterized by the use of a case base search based on probabilistic reasoning. This case base search method uses indices that represent the relationships ... Keywords: Bayesian network, case base search, help desk, parameter tuning, probabilistic reasoning

Yoshitaka Fujiwara; Satoki Abe; Yasunari Maeda; Hideki Yoshida

2008-03-01T23:59:59.000Z

68

Overview of New Tools to Perform Safety Analysis: BWR Station Black Out Test Case  

SciTech Connect

Dynamic Probabilistic Risk Assessment (DPRA) methodologies couple system simulator codes (e.g., RELAP, MELCOR) with simulation controller codes (e.g., RAVEN, ADAPT). While system simulator codes accurately model system dynamics deterministically, simulation controller codes introduce both deterministic (e.g., system control logic, operating procedures) and stochastic (e.g., component failures, parameter uncertainties) elements into the simulation. Typically, a DPRA is performed by: 1) sampling values of a set of parameters from the uncertainty space of interest (using the simulation controller codes), and 2) simulating the system behavior for that specific set of parameter values (using the system simulator codes). For complex systems, one of the major challenges in using DPRA methodologies is to analyze the large amount of information (i.e., large number of scenarios ) generated, where clustering techniques are typically employed to allow users to better organize and interpret the data. In this paper, we focus on the analysis of a nuclear simulation dataset that is part of the Risk Informed Safety Margin Characterization (RISMC) Boiling Water Reactor (BWR) station blackout (SBO) case study. We apply a software tool that provides the domain experts with an interactive analysis and visualization environment for understanding the structures of such high-dimensional nuclear simulation datasets. Our tool encodes traditional and topology-based clustering techniques, where the latter partitions the data points into clusters based on their uniform gradient flow behavior. We demonstrate through our case study that both types of clustering techniques complement each other in bringing enhanced structural understanding of the data.

D. Mandelli; C. Smith; T. Riley; J. Nielsen; J. Schroeder; C. Rabiti; A. Alfonsi; Cogliati; R. Kinoshita; V. Pasucci; B. Wang; D. Maljovec

2014-06-01T23:59:59.000Z

69

Assessment of a Product Range Model concept to support design reuse using rule based systems and case based reasoning  

Science Journals Connector (OSTI)

Knowledge reuse is recognised as a key element to support agile and effective decision-making processes during product development. The provision of information and knowledge for reuse relies on defined information structures and requires computational ... Keywords: Case based reasoning, Design reuse, Extended information models, Product Range Model, Rule based systems

Carlos Alberto Costa; Marcos Alexandre Luciano; Celson Pantoja Lima; Robert I. M. Young

2012-04-01T23:59:59.000Z

70

Six Sigma in banking services: a case study based approach  

Science Journals Connector (OSTI)

Six Sigma is not merely a quality initiative; it is a business initiative. The use of Six Sigma methodology is more valuable in financial institutions now than it has ever been and companies are now reaping true savings and revenue growth. It follows the Define-Measure-Analyse-Improve-Control (DMAIC) approach to problem solving and to identify the areas for improvement. Either the voice of the customer or voice of business acts as a source for identification of major improvement areas. This paper presents an extensive review on Six Sigma, and application of Six Sigma in banking services. The wider applicability of Six Sigma depends on identification of key performance indicators for different types of service processes. A case study is conducted in banking services to identify, analyse and improve upon critical to quality characteristics and key performance indicators within the different processes. The study was initiated with a view to identify the feeble areas in overall transaction and improve upon those which would be of maximum benefit to the company.

Indu Uprety

2009-01-01T23:59:59.000Z

71

Design of Cleanroom Airflows for Particle Control Using CFD Analysis: Case Studies  

Science Journals Connector (OSTI)

This paper describes two case studies involving the use of Computational Fluid Dynamics (CFD) analysis for evaluating the designs of significantly different types (and cleanliness classes) of cleanrooms: a cla...

Ken Goldstein; John Divelbiss

1993-01-01T23:59:59.000Z

72

An analysis of ITC decisions in antidumping, countervailing duty and safeguard cases  

Science Journals Connector (OSTI)

An Analysis of ITC Decisions in Antidumping, Countervailing Duty and Safeguard Cases. — This paper investigates the economic ... U.S. antidumping, countervailing duty, and safeguard laws during the 1980s. Utilizi...

Robert E. Baldwin; Jeffrey W. Steagall

1994-06-01T23:59:59.000Z

73

The Case for Muon-based Neutrino Beams  

E-Print Network (OSTI)

For the foreseeable future, high energy physics accelerator capabilities in the US will be deployed to study the physics of the neutrino sector. In this context, it is useful to explore the sensitivities and limiting systematic effects of the planned neutrino oscillation program, so that we can evaluate the issues that must be addressed in order to ensure the success of these efforts. It is only in this way that we will ultimately be able to elucidate the fundamental physics processes involved. We conclude that success can only be guaranteed by, at some point in the future, being able to deploy muon accelerator capabilities. Such capabilities provide the only route to precision neutrino beams with which to study and mitigate, at the sub-percent level, the limiting systematic issues of future oscillation measurements. Thus this analysis argues strongly for maintaining a viable accelerator research program towards future muon accelerator capabilities.

Huber, Patrick; Palmer, Mark

2014-01-01T23:59:59.000Z

74

Geographically Based Hydrogen Demand and Infrastructure Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Analysis Analysis Prepared for: 2010-2025 H2 Scenario Analysis Meeting Margo Melendez - NREL 2 Disclaimer and Government License This work has been authored by Midwest Research Institute (MRI) under Contract No. DE-AC36- 99GO10337 with the U.S. Department of Energy (the "DOE"). The United States Government (the "Government") retains and the publisher, by accepting the work for publication, acknowledges that the Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for Government purposes. Neither MRI, the DOE, the Government, nor any other agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any liability

75

Evaluating forest fire prevention programs: an analysis of three case studies  

E-Print Network (OSTI)

EVALUATING FOREST FIRE PREVENTION PROGRAMS; AN ANALYSIS OF THREE CASE STUDIES A Thesi. s by Shelley Renee Rigsby Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1980 jor Subject: Sociology EVALUATING FOREST FIRE PREVENTION PROGRAMS: AN ANALYSIS OF THREE CASE STUDIES A Thesis by S. Ranee Rigsby Approved as to style and content by: (Chairman of Committee) p~ (Memb r) (Head f partment...

Rigsby, Shelley Renee

1980-01-01T23:59:59.000Z

76

MEMS Design Synthesis: Integrating Case-based Reasoning and Multi-objective Genetic Algorithms  

E-Print Network (OSTI)

MEMS Design Synthesis: Integrating Case-based Reasoning and Multi-objective Genetic Algorithms designs concepts. Surface micro-machined resonators are used as an example to introduce this integrated human design knowledge in the form of past successful MEMS design cases to help guide human designers

Agogino, Alice M.

77

Evaluation of a case-based Reasoning Energy Prediction Tool for Commercial Buildings  

E-Print Network (OSTI)

This paper presents the results of an energy predictor that predicts the energy demand of commercial buildings using Case Based Reasoning (CBR). The proposed approach is evaluated using monitored data in a real office building located in Varennes...

Monfet, D.; Arkhipova, E.; Choiniere, D.

2013-01-01T23:59:59.000Z

78

Improving a Distributed Case-Based Reasoning System Using Introspective Learning  

Science Journals Connector (OSTI)

This paper describes the improvements to a fielded case-based reasoning (CBR) system. The system, called “Really Cool Air” is a distributed application that supports engineering sales staff. The application op...

Ian Watson; Dan Gardingen

2000-01-01T23:59:59.000Z

79

Value based analysis of acquisition portfolios  

E-Print Network (OSTI)

Currently, program-funding allocation is based on program performance. Funding cuts commonly lead to a poor reflection on the program management assigned to the given program. If additional factors such as program risk and ...

Burgess, Cheri Nicole Markt

2010-01-01T23:59:59.000Z

80

Monitoring- Based Commissioning with Advanced EMIS Analysis  

E-Print Network (OSTI)

?EMIS ? The?cornerstone?of?MBCx?is?a?comprehensive? Energy?Management?Information?System?(EMIS) An?EMIS?is?an?analytical?engine?with?capabilities?above?and? beyond?that?of?a?BAS.??Capabilities?include?up?to: ? Utility?cost?and?billing?analysis ? Enhanced...

Ratkovich, B.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Application of life cycle analysis: The case of green bullets  

SciTech Connect

Life-cycle analysis (LCA) has been used to analyze the desirability of replacing lead with a composite of tungsten and tin in projectile slugs used in small arms ammunition at US Department of Energy (DOE) training facilities for security personnel. The analysis includes consideration of costs, performance, environmental and human health impacts, availability of raw materials, and stakeholder acceptance. The DOE expends approximately 10 million rounds of small-arms ammunition each year training security personnel. This deposits over 300,000 pounds of lead and copper annually into DOE firing ranges, contributing to lead migration in the surrounding environment. Human lead intake occurs by inhalation of contaminated indoor firing range air and air containing lead particles that are resuspended during regular maintenance and cleanup, and by skin absorption while cleaning weapons. Projectiles developed by researchers at Oak Ridge National Laboratory (ORNL) using a composite of tungsten and tin perform as well as, or better than, those fabricated using lead. A cost analysis shows that tungsten-tin is less costly to use than lead, since, for the current number of rounds used annually, the higher tungsten-tin purchase price is small compared with higher maintenance costs associated with lead. The tungsten-tin composite presents a much smaller potential for adverse human health and environmental impacts than lead. Only a small fraction of the world`s tungsten production occurs in the United States, however, and market-economy countries account for only around 15% of world tungsten production. Life cycle analysis clearly shows that advantages outweigh risks in replacing lead with tungsten-tin in small-caliber projectiles at DOE training facilities. Concerns about the availability of raw tungsten are mitigated by the ease of converting back to lead (if necessary) and the recyclability of tungsten-tin rounds.

Bogard, J.S.; Yuracko, K.L.; Murray, M.E.; Lowden, R.A.; Vaughn, N.L.

1998-06-01T23:59:59.000Z

82

Economic Cost Analysis of Biodiesel Production: Case in Soybean Oil  

Science Journals Connector (OSTI)

(1) Combustion of petroleum diesel is a major source for emitting greenhouse gas (GHG). ... An economic analysis model using ASPEN PLUS software suggested that the production costs of soapstock and soybean oil biodiesel would be approximately 0.41 and 0.53 USD L?1, respectively, a 25% reduction relative to the estimated cost of biodiesel produced from soybean oil. ... The use of waste cooking oil to produce biodiesel reduced the raw material cost. ...

Yii-Der You; Je-Lueng Shie; Ching-Yuan Chang; Sheng-Hsuan Huang; Cheng-Yu Pai; Yue-Hwa Yu; Chungfang Ho Chang

2007-10-02T23:59:59.000Z

83

Application of life cycle analysis: The case of green bullets  

SciTech Connect

Life-cycle analysis (LCA) provides a general framework for assessing and summarizing all of the information important to a decision. LCA has been used to analyze the desirability of replacing lead (Pb) with a composite of tungsten (W) and tin (Sn) in projectile slugs used in small arms ammunition at US Department of Energy (DOE) training facilities for security personnel. The analysis includes consideration of costs, performance, environmental and human health impacts, availability of raw materials, and stakeholder acceptance. The DOE expends approximately 10 million rounds of small-arms ammunition each year training security personnel. This deposits over 300,000 pounds of lead and copper annually into DOE firing ranges, contributing to lead migration in the surrounding environment. Human lead intake occurs by inhalation of contaminated indoor firing range air and air containing lead particles that are resuspended during regular maintenance and cleanup, and by skin absorption while cleaning weapons. Projectiles developed by researchers at Oak Ridge National laboratory (ORNL) using a composite of tungsten and tin perform as well as, or better than, those fabricated using lead. A cost analysis shows that tungsten-tin is less costly to use than lead, since, for the current number of rounds used annually, the higher tungsten-tin purchase price is small compared with higher maintenance costs associated with lead. The tungsten-tin composite presents a much smaller potential for adverse human health and environmental impacts than lead. Only a small fraction of the world`s tungsten production occurs in the US, however, and market-economy countries account for only around 15% of world tungsten production. Stakeholders would prefer tungsten-tin on the basis of total cost, performance, reduced environmental impact and lower human toxicity. Lead is preferable on the basis of material availability.

Bogard, J.S.; Yuracko, K.L.; Lowden, R.A.; Murray, M.E.; Vaughn, N.L.

1998-11-01T23:59:59.000Z

84

Average-case analysis of perfect sorting by reversals Mathilde Bouvel  

E-Print Network (OSTI)

genomics, is the process of sorting a signed permutation to either the identity or to the reversed identity example here: we perform an average case analysis of a sorting algorithm from computational genomics by generating function analysis of a family of trees. Motivation: a computational genomics problem

Boyer, Edmond

85

Hierarchical models facilitate spatial analysis of large data sets: a case study on invasive plant species  

E-Print Network (OSTI)

LETTER Hierarchical models facilitate spatial analysis of large data sets: a case study on invasive issues require the analysis of large spatial point data sets ­ for example, modelling species distributions, abundance and spread from survey data. But modelling spatial relationships, especially in large

Silander Jr., John A.

86

2007 Wholesale Power Rate Case Initial Proposal : Risk Analysis Study.  

SciTech Connect

The Federal Columbia River Power System (FCRPS), operated on behalf of the ratepayers of the PNW by BPA and other Federal agencies, faces many uncertainties during the FY 2007-2009 rate period. Among these uncertainties, the largest revolve around hydro conditions, market prices and river operations for fish recovery. In order to provide a high probability of making its U.S. Treasury payments, BPA performs a Risk Analysis as part of its rate-making process. In this Risk Analysis, BPA identifies key risks, models their relationships, and then analyzes their impacts on net revenues (total revenues less expenses). BPA subsequently evaluates in the ToolKit Model the Treasury Payment Probability (TPP) resulting from the rates, risks, and risk mitigation measures described here and in the Wholesale Power Rate Development Study (WPRDS). If the TPP falls short of BPA's standard, additional risk mitigation revenues, such as PNRR and CRAC revenues are incorporated in the modeling in ToolKit until the TPP standard is met. Increased wholesale market price volatility and six years of drought have significantly changed the profile of risk and uncertainty facing BPA and its stakeholders. These present new challenges for BPA in its effort to keep its power rates as low as possible while fully meeting its obligations to the U.S. Treasury. As a result, the risk BPA faces in not receiving the level of secondary revenues that have been credited to power rates before receiving those funds is greater. In addition to market price volatility, BPA also faces uncertainty around the financial impacts of operations for fish programs in FY 2006 and in the FY 2007-2009 rate period. A new Biological Opinion or possible court-ordered change to river operations in FY 2006 through FY 2009 may reduce BPA's net revenues included Initial Proposal. Finally, the FY 2007-2009 risk analysis includes new operational risks as well as a more comprehensive analysis of non-operating risks. Both the operational and non-operational risks will be described in Section 2.0 of this study. Given these risks, if rates are designed using BPA's traditional approach of only adding Planned Net Revenues for Risk (PNRR), power rates would need to recover a much larger ''risk premium'' to meet BPA's TPP standard. As an alternative to high fixed risk premiums, BPA is proposing a risk mitigation package that combines PNRR with a variable rate mechanism similar to the cost recovery adjustment mechanisms used in the FY 2002-2006 rate period. The proposed risk mitigation package is less expensive on a forecasted basis because the rates can be adjusted on an annual basis to respond to uncertain financial outcomes. BPA is also proposing a Dividend Distribution Clause (DDC) to refund reserves in excess of $800M to customers in the event net revenues in the next rate period exceed current financial forecasts.

United States. Bonneville Power Administration.

2005-11-01T23:59:59.000Z

87

Defect site prediction based upon statistical analysis of fault signatures  

E-Print Network (OSTI)

Good failure analysis is the ability to determine the site of a circuit defect quickly and accurately. We propose a method for defect site prediction that is based on a site's probability of excitation, making no assumptions about the type...

Trinka, Michael Robert

2004-09-30T23:59:59.000Z

88

Case-study of a coal gasification-based energy supply system for China  

E-Print Network (OSTI)

clean fuels derived via coal gasification. Emissions of air pollutants in the SC scenario are compared polygeneration technologies to meet energy needs of coal-rich areas. Polygeneration systems, based on coalCase-study of a coal gasification-based energy supply system for China Zheng Hongtao Department

89

Free-Ridership in the Standards-Setting Process: The Case of 10BaseT  

E-Print Network (OSTI)

Free-Ridership in the Standards-Setting Process: The Case of 10BaseT Martin B.H. Weiss Ronald T to their non-exclusionary nature, are subject to free riders. In this paper, we consider free ridership that free-ridership existed in the development of the 10BaseT standard and in the subsequent product market

90

Fast Algorithms for Power Grid Analysis Based on Effective Resistance  

E-Print Network (OSTI)

Fast Algorithms for Power Grid Analysis Based on Effective Resistance Selc¸uk K¨ose and Eby G method significantly outperforms previously proposed power grid analysis techniques in terms and the impedance of the power grid. The effective resistance between any two nodes in a uniform grid structure has

Friedman, Eby G.

91

Reduction-based Security Analysis of Internet Routing Protocols  

E-Print Network (OSTI)

Reduction-based Security Analysis of Internet Routing Protocols Chen Chen, Limin Jia, Boon Thau Loo. These properties require routes announced by honest nodes in the network not to be tampered with by the adversary proofs with automated analysis. We define several reduction steps to reduce proving route authenticity

Pennsylvania, University of

92

Web-based Support Systems with Rough Set Analysis  

E-Print Network (OSTI)

Web-based Support Systems with Rough Set Analysis JingTao Yao Joseph P. Herbert Department. The applications of rough set analysis for WSS is looked at in this article. In particular, our focus of the challenges of using rough sets in a WMSS and detail some of the applications of rough sets in analyzing

Yao, JingTao

93

Diagnosis Support System based on clinical guidelines: comparison between Case-Based Fuzzy Cognitive Maps and Bayesian Networks  

Science Journals Connector (OSTI)

Several studies have described the prevalence and severity of diagnostic errors. Diagnostic errors can arise from cognitive, training, educational and other issues. Examples of cognitive issues include flawed reasoning, incomplete knowledge, faulty information ... Keywords: Bayesian network, Case based fuzzy cognitive maps, Decision support system, Knowledge representation, Practice guideline, Semantic web

Nassim Douali; Huszka Csaba; Jos De Roo; Elpiniki I. Papageorgiou; Marie-Christine Jaulent

2014-01-01T23:59:59.000Z

94

Analysis and Model-Based Control of Servomechanisms With Friction  

E-Print Network (OSTI)

Analysis and Model-Based Control of Servomechanisms With Friction Evangelos G. Papadopoulos e Engineering, National Technical University of Athens, 15780 Athens, Greece Friction is responsible for several, model-based feedback compensation is studied for servomechanism tracking tasks. Several kinetic friction

Papadopoulos, Evangelos

95

Surveillance data bases, analysis, and standardization program  

SciTech Connect

The traveler presented a paper at the Seventh ASTM-EURATOM Symposium on Reactor Dosimetry and co-chaired an oral session on Computer Codes and Methods. Papers of considerable interest to the NRC Surveillance Dosimetry Program involved statistically based adjustment procedures and uncertainties. The information exchange meetings with Czechoslovakia and Hungary were very enlightening. Lack of large computers have hindered their surveillance program. They depended very highly on information from their measurement programs which were somewhat limited because of the lack of sophisticated electronics. The Nuclear Research Institute at Rez had to rely on expensive mockups of power reactor configurations to test their fluence exposures. Computers, computer codes, and updated nuclear data would advance their technology rapidly, and they were not hesitant to admit this fact. Both eastern-bloc countries said that IBM is providing an IBM 3090 for educational purposes but research and development studies would have very limited access. They were very apologetic that their currencies were not convertible, and any exchange means that they could provide services or pay for US scientists in their respective countries, but funding for their scientists in the United States, or expenses that involved payment in dollars, must come from us.

Kam, F.B.K.

1990-09-26T23:59:59.000Z

96

Environmental Analysis of the Coal-based Power Production with Amine-based Carbon Capture  

E-Print Network (OSTI)

Environmental Analysis of the Coal-based Power Production with Amine-based Carbon Capture J. To capture carbon dioxide from fossil fuel power plants and to store it in geological formations (CCS at the beginning. From an electricity generator's perspective the amine based carbon capture offers some advantages

97

2.0 Closed-Domain Hydrate Dissociation (Base Case w/ Hydrate  

NLE Websites -- All DOE Office Websites (Extended Search)

Closed-Domain Hydrate Dissociation (Base Case w/ Hydrate) Closed-Domain Hydrate Dissociation (Base Case w/ Hydrate) 2.1 Problem Description One half of a 20-m, one-dimensional horizontal domain, discretized using uniformly spaced 1-m grid cells (optionally 0.1-m grid cells) is initialized with aqueous-hydrate conditions; whereas, the other half of the domain is initialized with gas-aqueous conditions. As with the Base Case problem, a closed horizontal domain is used to eliminate gravitational body forces and boundary condition effects. The initial conditions are specified to yield complete dissociation of the hydrate, via the thermal capacitance of the domain-half initialized with gas-aqueous conditions. To initialize the aqueous-hydrate half of the domain, temperature, pressure, and hydrate saturation are

98

Agent-Based Modeling and Simulation for Hydrogen Transition Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Agent Agent Agent - - Based Modeling Based Modeling and Simulation (ABMS) and Simulation (ABMS) for Hydrogen Transition for Hydrogen Transition Analysis Analysis Marianne Mintz Hydrogen Transition Analysis Workshop US Department of Energy January 26, 2006 Objectives and Scope for Phase 1 2 Analyze the hydrogen infrastructure development as a complex adaptive system using an agent-based modeling and simulation (ABMS) approach Develop an ABMS model to simulate the evolution of that system, spanning the entire H2 supply chain from production to consumption Identify key factors that either promote or inhibit the growth of H2 infrastructure Apply ABMS to get new insights into transition, particularly early transition phase - Dynamic interplay between supply and demand

99

Improvement of SRAM-based failure analysis calibrated IDDQ testing  

E-Print Network (OSTI)

the methodology and detail procedure of simulation based failure analysis t, echnique is explained. Chapter IV discusses the implementation of Iddq current calibration. Chapter V provides some examples supporting the failure analysis methodology . Conclusion... method that is often used to localize surface defects is by examining the hot emission spots. This process functions by detecting the excessive heat generated by the defective neighborhood during device operation. Heat sensitive liquid crystal...

Balachandran, Hariharan

1996-01-01T23:59:59.000Z

100

Heart Rate Regulation processed through wavelet analysis and change detection. Some case studies  

E-Print Network (OSTI)

Heart Rate Regulation processed through wavelet analysis and change detection. Some case studies-mail: veronique.billat@wanadoo.fr December 29, 2010 Abstract Heart rate variability (HRV) is an indicator of the regulation of the heart engine, Task Force (1996). This study compares the regulation of the heart in two

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "base case analysis" 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

Case Study Walnut Hill United Methodist Church - Dallas, Texas, Chiller Replacement Analysis  

E-Print Network (OSTI)

tons of gas-fired double-effect absorption chillers. This case study will show the original HVAC operation cost analysis and compare it to the present day operation costs and it will describe how unexpected changes occurred that caused the initial...

Phillips, J.

1998-01-01T23:59:59.000Z

102

Spatially Penalized Regression for Extremes Dependence Analysis and Prediction: Case of Precipitation Extremes  

E-Print Network (OSTI)

Spatially Penalized Regression for Extremes Dependence Analysis and Prediction: Case of Precipitation Extremes Debasish Das1,2 , Auroop R. Ganguly1 , Snigdhansu Chatterjee3 , Vipin Kumar4 , Zoran@cs.umn.edu, zoran.obradovic@temple.edu. ABSTRACT The inability to predict precipitation extremes under non

Obradovic, Zoran

103

Learning teamwork behaviors approach: learning by observation meets case-based planning  

Science Journals Connector (OSTI)

Learning collaborative behaviors is an essential part of multi agent systems. One of the suitable techniques for learning collaborative behaviors is observational learning. This paper describes a hybrid method for learning teamwork behaviors from an ... Keywords: case-based planning, collaborative behavior, learning collaborative behaviors, multi agent learning, observational learning, soccer, teamwork

Banafsheh Rekabdar; Bita Shadgar; Alireza Osareh

2012-09-01T23:59:59.000Z

104

VoIP-based Intra-village Teleconnectivity: An Architecture and Case Study  

E-Print Network (OSTI)

VoIP-based Intra-village Teleconnectivity: An Architecture and Case Study Janak Chandarana, K of the village. As proof- of-concept, we deploy the proposed solution in a rural test-bed and report our expensive to connect all villages to their nearest PoP. Income levels for rural India are lower than

Iyer, Sridhar

105

IMPROVING CARE AT THE END OF LIFE: AN AUTOMATED CASE-BASED REASONING APPROACH  

E-Print Network (OSTI)

IMPROVING CARE AT THE END OF LIFE: AN AUTOMATED CASE-BASED REASONING APPROACH Suzanne Tamang younger patients. Targeting system wide "error- reducing" reforms at vulnerable populations (who are disproportionately affected, both in terms of incidence and severity) can improve the quality of care delivered

Kopec, Danny

106

Using the DOE Knowledge Base for Special Event Analysis  

SciTech Connect

The DOE Knowledge Base is a library of detailed information whose purpose is to support the United States National Data Center (USNDC) in its mission to monitor compliance with the Comprehensive Test Ban Treaty (CTBT). One of the important tasks which the USNDC must accomplish is to periodically perform detailed analysis of events of high interest, so-called "Special Events", to provide the national authority with information needed to make policy decisions. In this paper we investigate some possible uses of the Knowledge Base for Special Event Analysis (SEA), and make recommendations for improving Knowledge Base support for SEA. To analyze an event in detail, there are two basic types of data which must be used sensor-derived data (wave- forms, arrivals, events, etc.) and regiohalized contextual data (known sources, geological characteristics, etc.). Cur- rently there is no single package which can provide full access to both types of data, so for our study we use a separate package for each MatSeis, the Sandia Labs-developed MATLAB-based seismic analysis package, for wave- form data analysis, and ArcView, an ESRI product, for contextual data analysis. Both packages are well-suited to pro- totyping because they provide a rich set of currently available functionality and yet are also flexible and easily extensible, . Using these tools and Phase I Knowledge Base data sets, we show how the Knowledge Base can improve both the speed and the quality of SEA. Empirically-derived interpolated correction information can be accessed to improve both location estimates and associated error estimates. This information can in turn be used to identi~ any known nearby sources (e.g. mines, volcanos), which may then trigger specialized processing of the sensor data. Based on the location estimate, preferred magnitude formulas and discriminants can be retrieved, and any known blockages can be identified to prevent miscalculations. Relevant historic events can be identilled either by spatial proximity searches or through waveform correlation processing. The locations and waveforms of these events can then be made available for side-by-side comparison and processing. If synthetic modeling is thought to be warranted, a wide variety of rele- vant contextu~l information (e.g. crustal thickness and layering, seismic velocities, attenuation factors) can be retrieved and sent to the appropriate applications. Once formedj the synthetics can then be brought in for side-by-side comparison and fhrther processing. Based on our study, we make two general recommendations. First, proper inter-process communication between sensor data analysis software and contextual data analysis sofisvare should be developed. Second, some of the Knowl- edge Base data sets should be prioritized or winnowed to streamline comparison with observed quantities.

Armstrong, H.M.; Harris, J.M.; Young, C.J.

1998-10-20T23:59:59.000Z

107

Multimodal knowledge-based analysis in multimedia event detection  

Science Journals Connector (OSTI)

Multimedia Event Detection (MED) is a multimedia retrieval task with the goal of finding videos of a particular event in a large-scale Internet video archive, given example videos and text descriptions. We focus on the multimodal knowledge-based analysis ... Keywords: acoustic concept indexing, adaptive semantic similarity, multimedia retrieval, visual concept signature

Ehsan Younessian; Teruko Mitamura; Alexander Hauptmann

2012-06-01T23:59:59.000Z

108

Transaction Based Power Flow Analysis For Transmission Utilization Allocation  

E-Print Network (OSTI)

allocation rules for cross terms are proposed to hedge firm or existing transactions against market risk markets (PX) and bilateral contract transactions (BC) share the same transmission system, and their ownTransaction Based Power Flow Analysis For Transmission Utilization Allocation Garng Huang, Senior

109

Type-Based Analysis of Generic Key Management APIs  

E-Print Network (OSTI)

Type-Based Analysis of Generic Key Management APIs Pedro Ad~ao1,2 , Riccardo Focardi3, Universit`a Ca' Foscari, Venezia, Italy Abstract In the past few years, cryptographic key management APIs. In fact, real APIs provide mechanisms to declare the intended use of keys but they are not strong enough

110

Supersonic Flutter Analysis Based on a Local Piston Theory  

E-Print Network (OSTI)

Supersonic Flutter Analysis Based on a Local Piston Theory Wei-Wei Zhang, Zheng-Yin Ye, and Chen§ University of California, Irvine, Irvine, California 92697-3975 DOI: 10.2514/1.37750 A highly efficient local-piston speeds. A steady mean flow solution is first obtained by an Euler method. The classical piston theory

Liu, Feng

111

A Denotational Model for Component-Based Risk Analysis  

E-Print Network (OSTI)

matches the value of the assets to be protected. A certain level of risk may be acceptable if the riskA Denotational Model for Component-Based Risk Analysis Gyrd Brændeland1,2, , Atle Refsdal2 , and Ketil Stølen1,2 1 Department of Informatics, University of Oslo, Norway 2 SINTEF, Norway Abstract. Risk

Stølen, Ketil

112

Decision analysis methodology applied to deep base communications  

SciTech Connect

Deep underground basing of an ICBM facility improves its survivability. The deep basing concept relies on the thick rock overburden to provide it with an ''earth shield'' to absorb any Soviet nuclear attack. However, this basing scheme complicates the problem of how communication is maintained between the deep base facility and higher authority in a post-attack environment. This report addresses the identification of what communication links between the underground facility and the surface will be operational in a post-attack environment and will meet the communication requirements of the ICBM deep base. This problem is difficult and complex because of the inability of conventional communications systems to survive and the lack of information about newer systems designed for survival. In addition, there are significant uncertainties concerning nuclear weapons effects, shock propagation, and the influence of geological parameters. There are numerous communication options for the deep base. In general, these options can be characterized by three general types: proliferated, hardened surface antennas; through-the-earth communications; and reconstituted communications, of which the rapid bore-out option is a specific case. Many of the potential options are costly and incorporate many new and untested technologies. The identification of the preferred option or combination of options is an important step in the deep basing communication system design and could affect overall facility design in terms of basing location, geometry, support systems, and cost. 35 refs., 21 figs., 7 tabs.

Latorre, V.R.; Harben, P.E.; Strait, R.S.; Didwall, E.M.

1986-08-01T23:59:59.000Z

113

Low Dose Radiation Research Program: Biologically Based Analysis of Lung  

NLE Websites -- All DOE Office Websites (Extended Search)

Biologically Based Analysis of Lung Cancer Incidence in a Large Biologically Based Analysis of Lung Cancer Incidence in a Large Canadian Occupational Cohort with Low-LET Low-dose Radiation Exposure, and Comparison with Japanese Atomic Bomb Survivors. Authors: W.D. Hazelton, D. Krewski, S.H. Moolgavkar Lung cancer incidence is analyzed in a large Canadian National Dose Registry (CNDR) cohort with individual annual dosimetry for low-dose occupational exposure to gamma and tritium radiation using several types of multistage models. The primary analysis utilizes the two-stage clonal expansion model (TSCE), with sensitivity analyses using extensions of this model incorporating additional stages. Characteristic and distinct temporal patterns of risk are found for dose-response affecting early, middle, or late stages of carcinogenesis, e.g., initiation with one or more stages,

114

Geographically Based Hydrogen Consumer Demand and Infrastructure Analysis: Final Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Geographically Based Hydrogen Geographically Based Hydrogen Consumer Demand and Infrastructure Analysis Final Report M. Melendez and A. Milbrandt Technical Report NREL/TP-540-40373 October 2006 NREL is operated by Midwest Research Institute â—Ź Battelle Contract No. DE-AC36-99-GO10337 Geographically Based Hydrogen Consumer Demand and Infrastructure Analysis Final Report M. Melendez and A. Milbrandt Prepared under Task No. HF65.8310 Technical Report NREL/TP-540-40373 October 2006 National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute * Battelle Contract No. DE-AC36-99-GO10337 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

115

Financial Analysis of Incentive Mechanisms to Promote Energy Efficiency: Case Study of a Prototypical Southwest Utility  

SciTech Connect

Many state regulatory commissions and policymakers want utilities to aggressively pursue energy efficiency as a strategy to mitigate demand and energy growth, diversify the resource mix, and provide an alternative to building new, costly generation. However, as the National Action Plan for Energy Efficiency (NAPEE 2007) points out, many utilities continue to shy away from aggressively expanding their energy efficiency efforts when their shareholder's fundamental financial interests are placed at risk by doing so. Thus, there is increased interest in developing effective ratemaking and policy approaches that address utility disincentives to pursue energy efficiency or lack of incentives for more aggressive energy efficiency efforts. New regulatory initiatives to promote increased utility energy efficiency efforts also affect the interests of consumers. Ratepayers and their advocates are concerned with issues of fairness, impacts on rates, and total consumer costs. From the perspective of energy efficiency advocates, the quid pro quo for utility shareholder incentives is the obligation to acquire all, or nearly all, achievable cost-effective energy efficiency. A key issue for state regulators and policymakers is how to maximize the cost-effective energy efficiency savings attained while achieving an equitable sharing of benefits, costs and risks among the various stakeholders. In this study, we modeled a prototypical vertically-integrated electric investor-owned utility in the southwestern US that is considering implementing several energy efficiency portfolios. We analyze the impact of these energy efficiency portfolios on utility shareholders and ratepayers as well as the incremental effect on each party when lost fixed cost recovery and/or utility shareholder incentive mechanisms are implemented. A primary goal of our quantitative modeling is to provide regulators and policymakers with an analytic framework and tools that assess the financial impacts of alternative incentive approaches on utility shareholders and customers if energy efficiency is implemented under various utility operating, cost, and supply conditions.We used and adapted a spreadsheet-based financial model (the Benefits Calculator) which was developed originally as a tool to support the National Action Plan for Energy Efficiency (NAPEE). The major steps in our analysis are displayed graphically in Figure ES- 1. Two main inputs are required: (1) characterization of the utility which includes its initial financial and physical market position, a forecast of the utility?s future sales, peak demand, and resource strategy to meet projected growth; and (2) characterization of the Demand-Side Resource (DSR) portfolio ? projected electricity and demand savings, costs and economic lifetime of a portfolio of energy efficiency (and/or demand response) programs that the utility is planning or considering implementing during the analysis period. The Benefits Calculator also estimates total resource costs and benefits of the DSR portfolio using a forecast of avoided capacity and energy costs. The Benefits Calculator then uses inputs provided in the Utility Characterization to produce a ?business-as usual? base case as well as alternative scenarios that include energy efficiency resources, including the corresponding utility financial budgets required in each case. If a decoupling and/or a shareholder incentive mechanism are instituted, the Benefits Calculator model readjusts the utility?s revenue requirement and retail rates accordingly. Finally, for each scenario, the Benefits Calculator produces several metrics that provides insights on how energy efficiency resources, decoupling and/or a shareholder incentive mechanism impacts utility shareholders (e.g. overall earnings, return on equity), ratepayers (e.g., average customer bills and rates) and society (e.g. net resource benefits).

Cappers, Peter; Goldman, Charles; Chait, Michele; Edgar, George; Schlegel, Jeff; Shirley, Wayne

2009-03-04T23:59:59.000Z

116

Evaluating case-based decision theory: Predicting empirical patterns of human classification learning  

Science Journals Connector (OSTI)

Abstract We introduce a computer program which calculates an agent?s optimal behavior according to case-based decision theory (Gilboa and Schmeidler, 1995) and use it to test CBDT against a benchmark set of problems from the psychological literature on human classification learning (Shepard et al., 1961). This allows us to evaluate the efficacy of CBDT as an account of human decision-making on this set of problems. We find: (1) The choice behavior of this program (and therefore case-based decision theory) correctly predicts the empirically observed relative difficulty of problems and speed of learning in human data. (2) ‘Similarity’ (how CBDT decision makers extrapolate from memory) is decreasing in vector distance, consistent with evidence in psychology (Shepard, 1987). (3) The best-fitting parameters suggest humans aspire to an 80 – 85 % success rate, and humans may increase their aspiration level during the experiment. (4) Average similarity is rejected in favor of additive similarity.

Andreas Duus Pape; Kenneth J. Kurtz

2013-01-01T23:59:59.000Z

117

Comparing internal and alliance-based New Product Development processes: case studies in the food industry  

Science Journals Connector (OSTI)

This paper reports a comparative two-case design study of in-house NPD projects as well as alliance-based NPD projects in a food company. Two contradicting propositions of the efficiency of NPD in an alliance compared with NPD performed internally are stated, and the findings indicate that the alliance-based NPD solution creates a better context for NPD than the in-house solution. The observed pattern may be interpreted in terms of the framework developed by evolutionary economics, which states that what a firm can do is mainly determined by its organisationally embedded routines.

Nina Veflen Olsen; Geir Gripsrud

2011-01-01T23:59:59.000Z

118

Analysis of wind turbine vibrations based on SCADA data  

E-Print Network (OSTI)

Vibrations of a wind turbine have a negative impact on its performance. Mitigating this undesirable impact requires knowledge of the relationship between the vibrations and other wind turbine parameters that could be potentially modified. Three approaches for ranking the impact importance of measurable turbine parameters on the vibrations of the drive train and the tower are discussed. They include the predictor importance analysis, the global sensitivity analysis, and the correlation coefficient analysis versed in data mining and statistics. To decouple the impact of wind speed on the vibrations of the drive train and the tower, the analysis is performed on data sets with narrow speed ranges. Wavelet analysis is applied to filter noisy accelerometer data. To exclude the impact malfunctions on the vibration analysis, the data are analyzed in a frequency domain. Data-mining algorithms are used to build models with turbine parameters of interest as inputs, and the vibrations of drive train and tower as outputs. The performance of each model is thoroughly evaluated based on metrics widely used in the wind industry. The neural network algorithm outperforms other classifiers and is considered to be the most promising approach to study wind turbine vibrations. ?DOI: 10.1115/1.4001461?

Andrew Kusiak; Zijun Zhang

2010-01-01T23:59:59.000Z

119

Regionalized LCA-Based Optimization of Building Energy Supply: Method and Case Study for a Swiss Municipality  

Science Journals Connector (OSTI)

Regionalized LCA-Based Optimization of Building Energy Supply: Method and Case Study for a Swiss Municipality ... This paper presents a regionalized LCA-based multiobjective optimization model of building energy demand and supply for the case of a Swiss municipality for the minimization of greenhouse gas emissions and particulate matter formation. ... A suitable method for such analyses is life cycle assessment (LCA). ...

Dominik Saner; Carl Vadenbo; Bernhard Steubing; Stefanie Hellweg

2014-05-27T23:59:59.000Z

120

On the feasibility of using emergy analysis as a source of benchmarking criteria through data envelopment analysis: A case study for wind energy  

Science Journals Connector (OSTI)

Abstract The definition of criteria for the benchmarking of similar entities is often a critical issue in analytical studies because of the multiplicity of criteria susceptible to be taken into account. This issue can be aggravated by the need to handle multiple data for multiple facilities. This article presents a methodological framework, named the Em + DEA method, which combines emergy analysis with Data Envelopment Analysis (DEA) for the ecocentric benchmarking of multiple resembling entities (i.e., multiple decision making units or DMUs). Provided that the life-cycle inventories of these \\{DMUs\\} are available, an emergy analysis is performed through the computation of seven different indicators, which refer to the use of fossil, metal, mineral, nuclear, renewable energy, water and land resources. These independent emergy values are then implemented as inputs for DEA computation, thus providing operational emergy-based efficiency scores and, for the inefficient DMUs, target emergy flows (i.e., feasible emergy benchmarks that would turn inefficient \\{DMUs\\} into efficient). The use of the Em + DEA method is exemplified through a case study of wind energy farms. The potential use of CED (cumulative energy demand) and \\{CExD\\} (cumulative exergy demand) indicators as alternative benchmarking criteria to emergy is discussed. The combined use of emergy analysis with DEA is proven to be a valid methodological approach to provide benchmarks oriented towards the optimisation of the life-cycle performance of a set of multiple similar facilities, not being limited to the operational traits of the assessed units.

Diego Iribarren; Ian Vázquez-Rowe; Benedetto Rugani; Enrico Benetto

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Weather data analysis based on typical weather sequence analysis. Application: energy building simulation  

E-Print Network (OSTI)

In building studies dealing about energy efficiency and comfort, simulation software need relevant weather files with optimal time steps. Few tools generate extreme and mean values of simultaneous hourly data including correlation between the climatic parameters. This paper presents the C++ Runeole software based on typical weather sequences analysis. It runs an analysis process of a stochastic continuous multivariable phenomenon with frequencies properties applied to a climatic database. The database analysis associates basic statistics, PCA (Principal Component Analysis) and automatic classifications. Different ways of applying these methods will be presented. All the results are stored in the Runeole internal database that allows an easy selection of weather sequences. The extreme sequences are used for system and building sizing and the mean sequences are used for the determination of the annual cooling loads as proposed by Audrier-Cros (Audrier-Cros, 1984). This weather analysis was tested with the datab...

David, Mathieu; Garde, Francois; Boyer, Harry

2014-01-01T23:59:59.000Z

122

A watershed-based method for environmental vulnerability assessment with a case study of the Mid-Atlantic region  

SciTech Connect

The paper presents a method for environmental vulnerability assessment with a case study of the Mid-Atlantic region. The method is based on the concept of 'self-/peer-appraisal' of a watershed in term of vulnerability. The self-/peer-appraisal process is facilitated by two separate linear optimization programs. The analysis provided insights on the environmental conditions, in general, and the relative vulnerability pattern, in particular, of the Mid-Atlantic region. The suggested method offers a simple but effective and objective way to perform a regional environmental vulnerability assessment. Consequently the method can be used in various steps in environmental assessment and planning. - Highlights: Black-Right-Pointing-Pointer We present a method for regional environmental vulnerability assessment. Black-Right-Pointing-Pointer It is based on the self-/peer-appraisal concept in term of vulnerability. Black-Right-Pointing-Pointer The analysis is facilitated by two separate linear optimization programs. Black-Right-Pointing-Pointer The method provides insights on the regional relative vulnerability pattern.

Tran, Liem T., E-mail: ltran1@utk.edu [Department of Geography, University of Tennessee, Knoxville, TN (United States); O& #x27; Neill, Robert V. [OTIE and Associates, Oak Ridge, TN (United States); Smith, Elizabeth R. [U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle Park, NC (United States)

2012-04-15T23:59:59.000Z

123

Techno-Economic Analysis of Biofuels Production Based on Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Biofuels Production Based on Biofuels Production Based on Gasification Ryan M. Swanson, Justinus A. Satrio, and Robert C. Brown Iowa State University Alexandru Platon ConocoPhillips Company David D. Hsu National Renewable Energy Laboratory Technical Report NREL/TP-6A20-46587 November 2010 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 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Techno-Economic Analysis of Biofuels Production Based on Gasification Ryan M. Swanson, Justinus A. Satrio, and Robert C. Brown Iowa State University Alexandru Platon

124

Crawl-based analysis of web applications: Prospects and challenges  

Science Journals Connector (OSTI)

Abstract In this paper we review five years of research in the field of automated crawling and testing of web applications. We describe the open source Crawljax tool, and the various extensions that have been proposed in order to address such issues as cross-browser compatibility testing, web application regression testing, and style sheet usage analysis. Based on that we identify the main challenges and future directions of crawl-based testing of web applications. In particular, we explore ways to reduce the exponential growth of the state space, as well as ways to involve the human tester in the loop, thus reconciling manual exploratory testing and automated test input generation. Finally, we sketch the future of crawl-based testing in the light of upcoming developments, such as the pervasive use of touch devices and mobile computing, and the increasing importance of cyber-security.

Arie van Deursen; Ali Mesbah; Alex Nederlof

2015-01-01T23:59:59.000Z

125

Forming Teams for Teaching Programming based on Static Code Analysis  

E-Print Network (OSTI)

The use of team for teaching programming can be effective in the classroom because it helps students to generate and acquire new knowledge in less time, but these groups to be formed without taking into account some respects, may cause an adverse effect on the teaching-learning process. This paper proposes a tool for the formation of team based on the semantics of source code (SOFORG). This semantics is based on metrics extracted from the preferences, styles and good programming practices. All this is achieved through a static analysis of code that each student develops. In this way, you will have a record of students with the information extracted; it evaluates the best formation of teams in a given course. The team's formations are based on programming styles, skills, pair programming or with leader.

Arosemena-Trejos, Davis; Clunie, Clifton

2012-01-01T23:59:59.000Z

126

Tool support for generating model-based test cases via web  

Science Journals Connector (OSTI)

Testing activities play an important role in order to obtain high quality software products. These activities become more important when considering critical software, for instance, space application software. Nowadays, there is an extensive collaboration among space institutions. So, it is more than natural to expect distributed development of software and software testing activities. Therefore, a collaborative tool hosted on the internet becomes quite useful. In this respect, WEB-PerformCharts 2.0 tool discussed in this paper moves in this direction. The tool focuses on supporting a single aspect of distributed software development: the activity of generating test cases via web. Moreover, it allows model-based test case generation by means of formal methods (formal languages statecharts and FSM) which are considered state of the art in software development. WEB-PerformCharts 2.0 can be used to generate test cases for any kind of reactive systems modelled in statecharts or FSM. We present three case studies in different application domains to demonstrate the feasibility of our tool.

Alessandro Oliveira Arantes; Valdivino Alexandre De Santiago JĂşnior; Nandamudi Lankalapalli Vijaykumar; Erica Ferreira De Souza

2014-01-01T23:59:59.000Z

127

GIS Based Multi-criteria Analysis for Industrial Site Selection  

Science Journals Connector (OSTI)

Abstract Site selection is one of the basic vital decisions in the start-up process, expansion or relocation of businesses of all kinds. Construction of a new industrial system is a major long-term investment, and in this sense determining the location is critical point on the road to success or failure of industrial system. One of the main objectives in industrial site selection is finding the most appropriate site with desired conditions defined by the selection criteria. Most of the data used by managers and decision makers in industrial site selection are geographical which means that industrial site selection process is spatial decision problem. Such studies are becoming more and more common, due to the availability of the Geographic Information Systems (GIS) with user-friendly interfaces. Geographic information systems (GIS) are powerful tool for spatial analysis which provides functionality to capture, store, query, analyze, display and output geographic information. Geographic Information Systems are used in conjunction with other systems and methods such as systems for decision making (DSS) and the method for multi-criteria decision making (MCDM). Synergistic effect is generated by combining these tools contribute to the efficiency and quality of spatial analysis for industrial site selection. This paper presents a successful solution for spatial decision support in the case of spatial analysis of Vojvodina as a region of interest for industrial site selection.

Aleksandar Rikalovic; Ilija Cosic; Djordje Lazarevic

2014-01-01T23:59:59.000Z

128

A graph-based system for network-vulnerability analysis  

SciTech Connect

This paper presents a graph-based approach to network vulnerability analysis. The method is flexible, allowing analysis of attacks from both outside and inside the network. It can analyze risks to a specific network asset, or examine the universe of possible consequences following a successful attack. The graph-based tool can identify the set of attack paths that have a high probability of success (or a low effort cost) for the attacker. The system could be used to test the effectiveness of making configuration changes, implementing an intrusion detection system, etc. The analysis system requires as input a database of common attacks, broken into atomic steps, specific network configuration and topology information, and an attacker profile. The attack information is matched with the network configuration information and an attacker profile to create a superset attack graph. Nodes identify a stage of attack, for example the class of machines the attacker has accessed and the user privilege level he or she has compromised. The arcs in the attack graph represent attacks or stages of attacks. By assigning probabilities of success on the arcs or costs representing level-of-effort for the attacker, various graph algorithms such as shortest-path algorithms can identify the attack paths with the highest probability of success.

Swiler, L.P.; Phillips, C.

1998-06-01T23:59:59.000Z

129

Appearedin Proc. ACM Software Testing Analysis and Veri cation Symp. TAV3-SIGSOFT89, pp. 179-186, Dec. 1989. 1 Estimating the Number of Test Cases Required to Satisfy the All-du-paths  

E-Print Network (OSTI)

discriminating structural testing crite- ria are based on data ow analysis. Rapps and Weyuker de ne a familyAppearedin Proc. ACM Software Testing Analysis and Veri cation Symp. TAV3-SIGSOFT89, pp. 179-186, Dec. 1989. 1 Estimating the Number of Test Cases Required to Satisfy the All-du-paths Testing

Bieman, James M.

130

Single-Step Syngas-to-Distillates (S2D) Process Based on Biomass-Derived Syngas – A Techno-Economic Analysis  

SciTech Connect

This study reports the comparison of biomass gasification based syngas-to-distillate (S2D) systems using techno-economic analysis (TEA). Three cases, state of technology (SOT) case, goal case, and conventional case, were compared in terms of performance and cost. The SOT case and goal case represent technology being developed at Pacific Northwest National Laboratory for a process starting with syngas using a single-step dual-catalyst reactor for distillate generation (S2D process). The conventional case mirrors the two-step S2D process previously utilized and reported by Mobil using natural gas feedstock and consisting of separate syngas-to-methanol and methanol-to-gasoline (MTG) processes. Analysis of the three cases revealed that the goal case could indeed reduce fuel production cost over the conventional case, but that the SOT was still more expensive than the conventional. The SOT case suffers from low one-pass yield and high selectivity to light hydrocarbons, both of which drive up production cost. Sensitivity analysis indicated that light hydrocarbon yield, single pass conversion efficiency, and reactor space velocity are the key factors driving the high cost for the SOT case.

Zhu, Yunhua; Jones, Susanne B.; Biddy, Mary J.; Dagle, Robert A.; Palo, Daniel R.

2012-08-01T23:59:59.000Z

131

Risk-based performance analysis for regional hybrid fuel with compressed natural gas option  

Science Journals Connector (OSTI)

Compressed natural gas is widely used for transportation due to its competitive price and less environmental impacts compared with traditional gasoline. With the recent push to implement electric vehicles, it became important to evaluate the current transportation fuelling status and identify best scenarios to move towards greener transportation. This paper presents analysis of hybrid transportation with compressed natural gas as a fuelling option to determine the most effective way to implement regional green transportation. Intelligent modelling and simulation techniques are proposed to model transportation and fuelling process and used as basis for performance modelling and analysis for different scenarios. Compressed natural gas is found to be a superior fuel to gasoline based on given scenario conditions and criteria for regional green hybrid transportation. The proposed scenarios are applied on case studies in Ontario to confirm the high value of compressed natural gas as viable fuelling scenarios.

Hossam A. Gabbar; Raymond Bedard

2012-01-01T23:59:59.000Z

132

Lossless droplet transfer of droplet-based microfluidic analysis  

DOE Patents (OSTI)

A transfer structure for droplet-based microfluidic analysis is characterized by a first conduit containing a first stream having at least one immiscible droplet of aqueous material and a second conduit containing a second stream comprising an aqueous fluid. The interface between the first conduit and the second conduit can define a plurality of apertures, wherein the apertures are sized to prevent exchange of the first and second streams between conduits while allowing lossless transfer of droplets from the first conduit to the second conduit through contact between the first and second streams.

Kelly, Ryan T (West Richland, WA); Tang, Keqi (Richland, WA); Page, Jason S (Kennewick, WA); Smith, Richard D (Richland, WA)

2011-11-22T23:59:59.000Z

133

Coefficient of performance (COP) analysis of geothermal district heating systems (GDHSs): Salihli GDHS case study  

Science Journals Connector (OSTI)

The purpose of this survey is about to analyze the heating coefficient of performance (COP) of geothermal district heating systems. Actual system data are taken from the Salihli GDHS, Turkey. The collected data are quantified and illustrated in tables, particularly for a reference temperature for comparison purposes. In this study, firstly energy and COP analysis of the \\{GDHSs\\} is introduced and then Salihli GDHS coefficient of performance results is given as a case study. Moreover, this paper offers an interesting empirical study of certain geothermal systems.

Leyla Ozgener

2012-01-01T23:59:59.000Z

134

Broadening the national focus in technological innovation system analysis: The case of offshore wind  

Science Journals Connector (OSTI)

Abstract This paper empirically explores if and how the spatial dimensions of Technological Innovation System matter using the case of offshore wind in North-Western Europe. In particular, it demonstrates the territory-specific institutional embeddedness and transnational linkages effects between four national offshore wind innovation systems. The paper discusses the consequences of taking these spatial dimensions into account in the analysis of the domestic TIS performance. It argues that the acknowledgement of these dimensions contributes to better understanding of the systems’ dynamics and leads to policy advice that is in sync with recent internationalisation developments in the diffusion of the offshore wind industry.

Anna J. Wieczorek; Marko P. Hekkert; Lars Coenen; Robert Harmsen

2014-01-01T23:59:59.000Z

135

Energy performance based connection fees: A case study in New York State  

Science Journals Connector (OSTI)

Energy connection fees and rebates, based on the projected energy load or efficiency of new buildings are currently being considered as a policy option for promoting greater energy efficiency in new construction. In theory, a well designed system of connection fees and rebates could provide states and utilities with a revenue neutral means of creating direct financial incentives for the construction of more energy-efficient buildings. However, a recent case study in New York State found that, in practice, many of the most important features affecting building energy efficiency could not be easily incorporated in connection fee programmes, and that implementation of even a scaled down programme would require a level of administrative commitment and resources which would be difficult to maintain. Instead of implementing connection fee programmes, the authors recommend devoting more resources to an approach based on the combined use of building energy rating systems, enhanced codes with better enforcement, and strategically placed financial incentives and design assistance.

Robert M. Wirtshafter; Eric W. Hildebrandt

1992-01-01T23:59:59.000Z

136

Regional assessment of environmental equity through GIS-based clustering and non-parametric statistical testing: a case study of Dallas County, Texas, USA  

Science Journals Connector (OSTI)

Previous GIS-based methods for assessing regional environmental equity issues tended to simplify the definition of impact area for a hazardous site by either directly adopting the pre-existing census unit or constructing a buffer with an arbitrary radius. Subsequent spatial analyses based on such a simplification support rather limited statistical analysis. The present paper reviews this methodological issue and proposes a more robust method combining statistical clustering, spatial overlay analysis, and non-parametric statistical testing for regional equity assessment. In this method, impact areas for individual population groups are derived through statistical clustering based on the internal data structure of multiple demographic variables, and facilities are tallied within each cluster zone to support a valid chi-square test. A case study on Dallas County, Texas, USA, demonstrated the advantages of this method, including data self-organisation for case-specific analysis, avoidance of arbitrariness of impact area definition, ability to provide a comprehensive evaluation based on multiple demographic characteristics, and statistical comparability with highly skewed data distribution.

Minhe Ji; T.S. Sunil

2005-01-01T23:59:59.000Z

137

A graph-based network-vulnerability analysis system  

SciTech Connect

This report presents a graph-based approach to network vulnerability analysis. The method is flexible, allowing analysis of attacks from both outside and inside the network. It can analyze risks to a specific network asset, or examine the universe of possible consequences following a successful attack. The analysis system requires as input a database of common attacks, broken into atomic steps, specific network configuration and topology information, and an attacker profile. The attack information is matched with the network configuration information and an attacker profile to create a superset attack graph. Nodes identify a stage of attack, for example the class of machines the attacker has accessed and the user privilege level he or she has compromised. The arcs in the attack graph represent attacks or stages of attacks. By assigning probabilities of success on the arcs or costs representing level-of-effort for the attacker, various graph algorithms such as shortest-path algorithms can identify the attack paths with the highest probability of success.

Swiler, L.P.; Phillips, C. [Sandia National Labs., Albuquerque, NM (United States); Gaylor, T. [3M, Austin, TX (United States). Visual Systems Div.

1998-01-01T23:59:59.000Z

138

A graph-based network-vulnerability analysis system  

SciTech Connect

This paper presents a graph based approach to network vulnerability analysis. The method is flexible, allowing analysis of attacks from both outside and inside the network. It can analyze risks to a specific network asset, or examine the universe of possible consequences following a successful attack. The analysis system requires as input a database of common attacks, broken into atomic steps, specific network configuration and topology information, and an attacker profile. The attack information is matched with the network configuration information and an attacker profile to create a superset attack graph. Nodes identify a stage of attack, for example the class of machines the attacker has accessed and the user privilege level he or she has compromised. The arcs in the attack graph represent attacks or stages of attacks. By assigning probabilities of success on the arcs or costs representing level of effort for the attacker, various graph algorithms such as shortest path algorithms can identify the attack paths with the highest probability of success.

Swiler, L.P.; Phillips, C.; Gaylor, T.

1998-05-03T23:59:59.000Z

139

Childhood leukemia and electromagnetic fields: results of a population-based case-control study in Germany  

Science Journals Connector (OSTI)

The investigation of an association between increased exposure toresidential extremely-low frequency elec-tromagnetic fields (ELF-EMF) andchildhood leukemia was part of a population-based case-control study ca...

Jörg Michaelis; Joachim Schüz; Rolf Meinert; Michael Menger…

1997-01-01T23:59:59.000Z

140

A Video Semantic Analysis Method Based on Kernel Discriminative Sparse Representation and Weighted KNN  

Science Journals Connector (OSTI)

......Intelligence, Machine Learning and Data Analytics A Video Semantic Analysis Method Based on Kernel Discriminative...China Handling editor: Zhangbing Zhou To improve the video semantic analysis for video surveillance, a new video semantic analysis method......

Yongzhao Zhan; Shan Dai; Qirong Mao; Lu Liu; Wei Sheng

2014-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Feature-Based Statistical Analysis of Combustion Simulation Data  

SciTech Connect

We present a new framework for feature-based statistical analysis of large-scale scientific data and demonstrate its effectiveness by analyzing features from Direct Numerical Simulations (DNS) of turbulent combustion. Turbulent flows are ubiquitous and account for transport and mixing processes in combustion, astrophysics, fusion, and climate modeling among other disciplines. They are also characterized by coherent structure or organized motion, i.e. nonlocal entities whose geometrical features can directly impact molecular mixing and reactive processes. While traditional multi-point statistics provide correlative information, they lack nonlocal structural information, and hence, fail to provide mechanistic causality information between organized fluid motion and mixing and reactive processes. Hence, it is of great interest to capture and track flow features and their statistics together with their correlation with relevant scalar quantities, e.g. temperature or species concentrations. In our approach we encode the set of all possible flow features by pre-computing merge trees augmented with attributes, such as statistical moments of various scalar fields, e.g. temperature, as well as length-scales computed via spectral analysis. The computation is performed in an efficient streaming manner in a pre-processing step and results in a collection of meta-data that is orders of magnitude smaller than the original simulation data. This meta-data is sufficient to support a fully flexible and interactive analysis of the features, allowing for arbitrary thresholds, providing per-feature statistics, and creating various global diagnostics such as Cumulative Density Functions (CDFs), histograms, or time-series. We combine the analysis with a rendering of the features in a linked-view browser that enables scientists to interactively explore, visualize, and analyze the equivalent of one terabyte of simulation data. We highlight the utility of this new framework for combustion science; however, it is applicable to many other science domains.

Bennett, J; Krishnamoorthy, V; Liu, S; Grout, R; Hawkes, E; Chen, J; Pascucci, V; Bremer, P T

2011-11-18T23:59:59.000Z

142

On Smoothing Surfaces in Voxel Based Finite Element Analysis of Trabecular Bone  

E-Print Network (OSTI)

-)finite element analysis based on three-dimen- sional computed tomography (CT) data of human bone takes place finite element (FE) analysis. The approach based on the FE analysis leads to linear systems of equations analysis the computational domain is composed of a multitude of tiny cubes, so-called voxels

Frey, Pascal

143

The Fourier-Like and Hartley-Like Wavelet Analysis Based on Hilbert Transforms  

E-Print Network (OSTI)

In continuous-time wavelet analysis, most wavelet present some kind of symmetry. Based on the Fourier and Hartley transform kernels, a new wavelet multiresolution analysis is proposed. This approach is based on a pair of orthogonal wavelet functions and is named as the Fourier-Like and Hartley-Like wavelet analysis. A Hilbert transform analysis on the wavelet theory is also included.

Soares, L R; Cintra, R J

2015-01-01T23:59:59.000Z

144

Testing the Results of Static Worst-Case Execution-Time Analysis P. Puschner and R. Nossaly  

E-Print Network (OSTI)

Testing the Results of Static Worst-Case Execution-Time Analysis P. Puschner and R. Nossaly provided by the user. This pa- per presents a method for testing the results of static WCET analysis. The proposed test method is a black- box test method that uses a genetic algorithm (GA) for test

145

Neuroscience Instrumentation and Distributed Analysis of Brain Activity Data: A Case for eScience on Global Grids  

E-Print Network (OSTI)

1 Neuroscience Instrumentation and Distributed Analysis of Brain Activity Data: A Case for e commonly observed in scientific disciplines. Two popular scientific disciplines of this nature are brain science and high-energy physics. The analysis of brain activity data gathered from the MEG

Buyya, Rajkumar

146

Survey of sampling-based methods for uncertainty and sensitivity analysis.  

SciTech Connect

Sampling-based methods for uncertainty and sensitivity analysis are reviewed. The following topics are considered: (1) Definition of probability distributions to characterize epistemic uncertainty in analysis inputs, (2) Generation of samples from uncertain analysis inputs, (3) Propagation of sampled inputs through an analysis, (4) Presentation of uncertainty analysis results, and (5) Determination of sensitivity analysis results. Special attention is given to the determination of sensitivity analysis results, with brief descriptions and illustrations given for the following procedures/techniques: examination of scatterplots, correlation analysis, regression analysis, partial correlation analysis, rank transformations, statistical tests for patterns based on gridding, entropy tests for patterns based on gridding, nonparametric regression analysis, squared rank differences/rank correlation coefficient test, two dimensional Kolmogorov-Smirnov test, tests for patterns based on distance measures, top down coefficient of concordance, and variance decomposition.

Johnson, Jay Dean; Helton, Jon Craig; Sallaberry, Cedric J. PhD. (.; .); Storlie, Curt B. (Colorado State University, Fort Collins, CO)

2006-06-01T23:59:59.000Z

147

Nanoparticle sizing method based on fluorescence anisotropy analysis  

Science Journals Connector (OSTI)

Abstract Demand for applications of nanoparticles in electric architecture has been increasing. Nanoparticles provide new opportunities for improving circuit response. We discuss a novel method for evaluating nanoparticle sizes based on fluorescence anisotropy analysis. Particle size evaluation is possible through measurements of the rotational diffusion coefficient, which is sensitive to particle size. We develop a system for measuring rotational diffusion coefficients by using a fluorescent probe to label a particle. We report fundamental experiments that verify the feasibility of the proposed method. The rotational diffusion coefficients of gold nanoparticles with diameters ranging 6–20 nm were measured using the proposed method. The measured rotational diffusion coefficients decrease with increasing particle size. This finding indicates that nanoparticles smaller than 15 nm can be measured with fine resolution.

Terutake Hayashi; Yuki Ishizaki; Masaki Michihata; Yasuhiro Takaya; Shin-Ichi Tanaka

2015-01-01T23:59:59.000Z

148

Effectiveness of computer-based instruction: An updated analysis  

Science Journals Connector (OSTI)

A meta-analysis of findings from 254 controlled evaluation studies showed that computer-based instruction (CBI) usually produces positive effects on students. The studies covered learners of all age levels — from kindergarten pupils to adult students. CBI programs raised student examination scores by 0.30 standard deviations in the average study, a moderate but significant effect. Size of effect varied, however, as a function of study feature. Effects were larger in published rather than unpublished studies, in studies in which different teachers taught experimental and control classes, and in studies of short duration. CBI also produced small but positive changes in student attitudes toward teaching and computers, and it reduced substantially the amount of time needed for instruction.

Chen-Lin C. Kulik; James A. Kulik

1991-01-01T23:59:59.000Z

149

Traffic-related air toxics and preterm birth: a population-based case-control study in Los Angeles County, California  

E-Print Network (OSTI)

air pollution exposures and preterm birth based on single pollutant models Exposure Metric Adjusted a Crude N (cases, controls)

Wilhelm, Michelle; Ghosh, Jo Kay; Su, Jason; Cockburn, Myles; Jerrett, Michael; Ritz, Beate

2011-01-01T23:59:59.000Z

150

SYSTEM DESIGN AND ANALYSIS FOR CONCEPTUAL DESIGN OF OXYGEN-BASED PC BOILER  

SciTech Connect

The objective of the system design and analysis task of the Conceptual Design of Oxygen-Based PC Boiler study is to optimize the PC boiler plant by maximizing system efficiency. Simulations of the oxygen-fired plant with CO{sub 2} sequestration were conducted using Aspen Plus and were compared to a reference air-fired 460 Mw plant. Flue gas recycle is used in the O{sub 2}-fired PC to control the flame temperature. Parametric runs were made to determine the effect of flame temperature on system efficiency and required waterwall material and thickness. The degree of improvement on system efficiency of various modifications including hot gas recycle, purge gas recycle, flue gas feedwater recuperation, and recycle purge gas expansion were investigated. The selected O{sub 2}-fired design case has a system efficiency of 30.1% compared to the air-fired system efficiency of 36.7%. The design O{sub 2}-fired case requires T91 waterwall material and has a waterwall surface area of only 44% of the air-fired reference case. Compared to other CO{sub 2} sequestration technologies, the O{sub 2}-fired PC is substantially better than both natural gas combined cycles and post CO{sub 2} removal PCs and is slightly better than integrated gasification combined cycles.

Zhen Fan; Andrew Seltzer

2003-11-01T23:59:59.000Z

151

E-Print Network 3.0 - analysis web-based interface Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

web-based interface Search Powered by Explorit Topic List Advanced Search Sample search results for: analysis web-based interface Page: << < 1 2 3 4 5 > >> 1 Web-based Support...

152

DOE Hydrogen Analysis Repository: H2A Case Study: Future Central Nuclear  

NLE Websites -- All DOE Office Websites (Extended Search)

Nuclear Nuclear Project Summary Full Title: H2A Case Study: Longer-Term (2020-2030) Advanced Nuclear Energy - High Temperature (Steam) Electrolysis Project ID: 237 Principal Investigator: Dan Mears Keywords: Hydrogen production; nuclear; electrolysis; water Purpose The purpose of this analysis was to analyze the technical and economic aspects of a process for production of hydrogen from the high-temperature electrolysis of water using advance nuclear technology. Performer Principal Investigator: Dan Mears Organization: Technology Insights Address: 6540 Lusk Blvd., Suite C-102 San Diego, CA 92121 Telephone: 858-455-9500 Email: mears@ti-sd.com Sponsor(s) Name: Fred Joseck Organization: DOE/EERE/HFCIT Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov Period of Performance

153

DOE Hydrogen Analysis Repository: H2A Case Study: Future Distributed  

NLE Websites -- All DOE Office Websites (Extended Search)

Natural Gas Steam Reformer Natural Gas Steam Reformer Project Summary Full Title: H2A Case Study: Future (2025) Natural Gas Steam Reformer (SMR) at Forecourt 1500 kg/day Project ID: 243 Principal Investigator: Brian James Keywords: Hydrogen production; forecourt; distributed; ethanol; steam reforming Purpose The purpose of this analysis is to determine a baseline delivered cost of hydrogen for the forecourt production of hydrogen from ethanol steam reforming. Performer Principal Investigator: Brian James Organization: Directed Technologies, Inc. (DTI) Address: 3601 Wilson Blvd., Suite 650 Arlington, VA 22201 Telephone: 703-243-3383 Email: Brian_James@DirectedTechnologies.com Sponsor(s) Name: Fred Joseck Organization: DOE/EERE/HFCIT Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov

154

DOE Hydrogen Analysis Repository: H2A Case Study: Current Central Biomass  

NLE Websites -- All DOE Office Websites (Extended Search)

Current Central Biomass Current Central Biomass Project Summary Full Title: H2A Case Study: Current (2005) Hydrogen from Biomass via Gasification and Catalytic Steam Reforming Project ID: 229 Principal Investigator: Darlene Steward Keywords: Biomass; pressure swing adsorption (PSA); water gas shift reaction (WGSR); costs; hydrogen production; gasifier Purpose The purpose of this analysis was to determine the production cost of hydrogen from biomass via the FERCO indirectly-heated gasifier. Performer Principal Investigator: Darlene Steward Organization: National Renewable Energy Laboratory (NREL) Address: 1617 Cole Blvd. Golden, CO 80401-3393 Telephone: 303-275-3837 Email: Darlene_Steward@nrel.gov Sponsor(s) Name: Fred Joseck Organization: DOE/EERE/HFCIT Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov

155

DOE Hydrogen Analysis Repository: H2A Case Study: Current Distributed  

NLE Websites -- All DOE Office Websites (Extended Search)

Natural Gas Steam Reformer Natural Gas Steam Reformer Project Summary Full Title: H2A Case Study: Current (2005) Steam Methane Reformer (SMR) at Forecourt 1500 kg/day Project ID: 236 Principal Investigator: Brian James Keywords: Hydrogen production; forecourt; steam methane reforming; natural gas; distributed Purpose The purpose of this analysis is to determine a baseline delivered cost of hydrogen for the forecourt production of hydrogen from natural gas steam reforming. Performer Principal Investigator: Brian James Organization: Directed Technologies, Inc. (DTI) Address: 3601 Wilson Blvd., Suite 650 Arlington, VA 22201 Telephone: 703-243-3383 Email: Brian_James@DirectedTechnologies.com Sponsor(s) Name: Fred Joseck Organization: DOE/EERE/HFCIT Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov

156

DOE Hydrogen Analysis Repository: H2A Case Study: Current Central Natural  

NLE Websites -- All DOE Office Websites (Extended Search)

Natural Gas Reforming without Sequestration Natural Gas Reforming without Sequestration Project Summary Full Title: H2A Case Study: Current (2005) Central Hydrogen from Natural Gas without CO2 Capture and Sequestration Project ID: 233 Principal Investigator: Darlene Steward Keywords: Hydrogen production; steam methane reforming; natural gas Purpose Steam reforming of hydrocarbons continues to be the most efficient, economical, and widely used process for production of hydrogen and hydrogen/carbon monoxide mixtures. The purpose of this analysis is to assess the economic production of hydrogen from the steam reforming of natural gas. Performer Principal Investigator: Darlene Steward Organization: National Renewable Energy Laboratory (NREL) Address: 1617 Cole Blvd. Golden, CO 80401-3393 Telephone: 303-275-3837

157

Substation Topology Analysis Based on Improved Tracking Algorithm  

Science Journals Connector (OSTI)

The substation network topology analysis is an important part ... simulation results validate that the proposed algorithm for substation network topology analysis is easy to be...

Shi Jianlei; Zhang Xuan; Zhao Qiang…

2014-01-01T23:59:59.000Z

158

Extended exergy analysis of urban socioeconomic system: a case study of Beijing, 1996-2006  

Science Journals Connector (OSTI)

In this study, a temporal analysis based on extended exergy is conducted for the urban system. The exchange and utilisation of resources, products and labour forces among seven sectors and the environment are quantified. Three new indicators are proposed to measure the resource utilisation efficiency, input/output structure and environmental impact of Beijing during 1996-2006. The following conclusions can be derived: the industrial structure has been updated as the one with more economic value added; the external dependence degree of Ag-sector has significantly increased, suggesting a modernised agricultural production mode despite of the intensive production and negative externalities; the exergy efficiencies of Ex-and Co-sectors are similar to those of Norway, Italy, UK and the province of Siena, and those of Te-sector kept increasing. The results also suggest that extended exergy analysis could be refined to become a tool for efficiency assessment, structural regulation and environmental management.

Gengyuan Liu; Zhifeng Yang; Bin Chen; Meirong Su; Yan Zhang; Lixiao Zhang; Meiming Jiang

2011-01-01T23:59:59.000Z

159

Transient Signal Analysis is a digital device testing method that is based on the analysis of voltage transients at multi-  

E-Print Network (OSTI)

-free and defective devices in both simulations and hardware. 1.0 Introduction Transient Signal Analysis (TSAAbstract Transient Signal Analysis is a digital device testing method that is based on the analysis of voltage transients at multi- ple test points. The power supply transient signals of an 8-bit multiplier

Plusquellic, James

160

Feed-in tariff promotion and innovative measures for renewable electricity: Taiwan case analysis  

Science Journals Connector (OSTI)

Abstract Taiwan, located in a subtropical area, is a high energy-importing nation with approximately 98% of our energy supplied by imported fuels since 2000. In this regard, renewable electricity systems from its richness of solar radiation and strong monsoon are thus becoming attractive due to the energy, economic, and environmental policies for pursuing clean electricity supply, sustainable development and greenhouse gases emission mitigation in Taiwan. The objective of this paper was to present an analysis of profitable promotion and innovative measures for renewable electricity in Taiwan because the photovoltaic (PV) power and wind power systems have rapidly increased the total installed capacity from 2.7 MW in 2000 to 1006.2 MW in 2013. The description in the paper was thus summarized on an analysis of renewable electricity supply since 2000 and its future goals up to 2030, and then centered on the new promotion legislation (i.e., Renewable Energy Development Act) in the measures of feed-in tariff (FIT) and tax/subsidy incentives. Current subsidiary and innovative programs to promote the development of renewable electricity technologies, including roof-type PV power, off-shore wind power and biogas-to-power, were also described. Due to its innovation promotion for renewable energy exploitation in recent years, Pingtung County, located in the southernmost of Taiwan, was introduced as a case study. Finally, some recommendations for promote renewable electricity development were addressed in the paper.

Wen-Tien Tsai

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Improved mesh based photon sampling techniques for neutron activation analysis  

SciTech Connect

The design of fusion power systems requires analysis of neutron activation of large, complex volumes, and the resulting particles emitted from these volumes. Structured mesh-based discretization of these problems allows for improved modeling in these activation analysis problems. Finer discretization of these problems results in large computational costs, which drives the investigation of more efficient methods. Within an ad hoc subroutine of the Monte Carlo transport code MCNP, we implement sampling of voxels and photon energies for volumetric sources using the alias method. The alias method enables efficient sampling of a discrete probability distribution, and operates in 0(1) time, whereas the simpler direct discrete method requires 0(log(n)) time. By using the alias method, voxel sampling becomes a viable alternative to sampling space with the 0(1) approach of uniformly sampling the problem volume. Additionally, with voxel sampling it is straightforward to introduce biasing of volumetric sources, and we implement this biasing of voxels as an additional variance reduction technique that can be applied. We verify our implementation and compare the alias method, with and without biasing, to direct discrete sampling of voxels, and to uniform sampling. We study the behavior of source biasing in a second set of tests and find trends between improvements and source shape, material, and material density. Overall, however, the magnitude of improvements from source biasing appears to be limited. Future work will benefit from the implementation of efficient voxel sampling - particularly with conformal unstructured meshes where the uniform sampling approach cannot be applied. (authors)

Relson, E.; Wilson, P. P. H.; Biondo, E. D. [University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706 (United States)

2013-07-01T23:59:59.000Z

162

Rotor current transient analysis of DFIG-based wind turbines during symmetrical voltage faults  

Science Journals Connector (OSTI)

Abstract The impact of grid voltage fault on doubly fed induction generators (DFIGs), especially rotor currents, has received much attention. So, in this paper, the rotor currents of based-DFIG wind turbines are considered in a generalized way, which can be widely used to analyze the cases under different levels of voltage symmetrical faults. A direct method based on space vector is proposed to obtain an accurate expression of rotor currents as a function of time for symmetrical voltage faults in the power system. The presented theoretical analysis is simple and easy to understand and especially highlights the accuracy of the expression. Finally, the comparable simulations evaluate this analysis and show that the expression of the rotor currents is sufficient to calculate the maximum fault current, DC and AC components, and especially helps to understand the causes of the problem and as a result, contributes to adapt reasonable approaches to enhance the fault ride through (FRT) capability of DFIG wind turbines during a voltage fault.

Yu Ling; Xu Cai; Ningbo Wang

2013-01-01T23:59:59.000Z

163

Techno-economic analysis of CO2 conditioning processes in a coal based oxy-combustion power plant  

Science Journals Connector (OSTI)

Oxy-combustion is a competitive technology to enable the capture of CO2 from coal based power plants. The CO2 conditioning process is an important contributor to the power penalty related to CO2 capture in such power plants. The two-stage flash process is commonly proposed in literature. This paper presents a study on the CO2 conditioning process in three cases: one-stage flash, two-stage flash and three-stage flash. The composite curves are applied to investigate the improvement potential. A detailed exergy analysis has been performed to compare the plant performance in the three cases. Considering the one-stage flash process as the base case, the specific power consumption is reduced by 7.3% in the two-stage flash process and 8.1% in the three-stage flash process. The investment cost will of course increase. The economic analysis shows that the two-stage flash process is the most cost effective alternative. However, a higher recovery rate can be achieved in the three-stage flash process when the CO2 purity is designed to be the same for the three cases.

Chao Fu; Truls Gundersen

2012-01-01T23:59:59.000Z

164

DAMOCO: MATLAB toolbox for multivariate data analysis, based on coupled oscillators approach  

E-Print Network (OSTI)

DAMOCO: MATLAB toolbox for multivariate data analysis, based on coupled oscillators approach This manual describes the collection of MATLAB programs for multivariate data analysis, based on modeling.agnld.uni-potsdam.de/~mros/damoco.html. 1 Introduction DAMOCO means Data Analysis with Models Of Coupled Oscillators. This MATLAB toolbox

Potsdam, Universität

165

HBDR: a case-based tool for organizing architectural information on historic building designs  

E-Print Network (OSTI)

. 5 Searching a case: Browse screens . 56 . . 58 6 General information about the design case . 59 7 Detail information about the design case. 8 Search screens for browse feedback . 60 . . 61 9 Student's feedback for a design case . . 62 10 Add... required to search the software . . . . . . 76 8 Responses about the software's functions 77 9 Summary of responses for comparative testing between two methods. . . . . . . . . . . . 78 CHAPTER I INTRODUCTION Recent developments in the field...

Mulye, Leena

2012-06-07T23:59:59.000Z

166

Models of fragmentation phenomena based on the symmetric group S sub n and combinational analysis  

SciTech Connect

Various models for fragmentation phenomena are developed using methods from permutation groups and combinational analysis. The appearance and properties of power laws in these models are discussed. Various exactly soluble cases are studied.

Mekjian, A.Z. (Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory); Lee, S.J. (Rutgers--the State Univ., Piscataway, NJ (United States). Dept. of Physics and Astronomy)

1991-01-29T23:59:59.000Z

167

Models of fragmentation phenomena based on the symmetric group S{sub n} and combinational analysis  

SciTech Connect

Various models for fragmentation phenomena are developed using methods from permutation groups and combinational analysis. The appearance and properties of power laws in these models are discussed. Various exactly soluble cases are studied.

Mekjian, A.Z. [Washington Univ., Seattle, WA (United States). Inst. for Nuclear Theory; Lee, S.J. [Rutgers--the State Univ., Piscataway, NJ (United States). Dept. of Physics and Astronomy

1991-01-29T23:59:59.000Z

168

The IAEA Coordinated Research Program on HTGR Reactor Physics, Thermal-hydraulics and Depletion Uncertainty Analysis: Description of the Benchmark Test Cases and Phases  

SciTech Connect

The continued development of High Temperature Gas Cooled Reactors (HTGRs) requires verification of design and safety features with reliable high fidelity physics models and robust, efficient, and accurate codes. The uncertainties in the HTR analysis tools are today typically assessed with sensitivity analysis and then a few important input uncertainties (typically based on a PIRT process) are varied in the analysis to find a spread in the parameter of importance. However, one wish to apply a more fundamental approach to determine the predictive capability and accuracies of coupled neutronics/thermal-hydraulics and depletion simulations used for reactor design and safety assessment. Today there is a broader acceptance of the use of uncertainty analysis even in safety studies and it has been accepted by regulators in some cases to replace the traditional conservative analysis. Finally, there is also a renewed focus in supplying reliable covariance data (nuclear data uncertainties) that can then be used in uncertainty methods. Uncertainty and sensitivity studies are therefore becoming an essential component of any significant effort in data and simulation improvement. In order to address uncertainty in analysis and methods in the HTGR community the IAEA launched a Coordinated Research Project (CRP) on the HTGR Uncertainty Analysis in Modelling early in 2012. The project is built on the experience of the OECD/NEA Light Water Reactor (LWR) Uncertainty Analysis in Best-Estimate Modelling (UAM) benchmark activity, but focuses specifically on the peculiarities of HTGR designs and its simulation requirements. Two benchmark problems were defined with the prismatic type design represented by the MHTGR-350 design from General Atomics (GA) while a 250 MW modular pebble bed design, similar to the INET (China) and indirect-cycle PBMR (South Africa) designs are also included. In the paper more detail on the benchmark cases, the different specific phases and tasks and the latest status and plans are presented.

Frederik Reitsma; Gerhard Strydom; Bismark Tyobeka; Kostadin Ivanov

2012-10-01T23:59:59.000Z

169

A fault-tolerant framework for QoS-aware web service composition via case-based reasoning  

Science Journals Connector (OSTI)

Service-oriented systems are performed in a highly dynamic and heterogeneous environment to achieve a user's business requirements. In this paper, we introduce a case-based reasoning approach to improve the system's fault-tolerant ability meeting the end-to-end Quality-of-Service (QoS) constraints. We consider and quantify the fault information and QoS information together in a case. In addition, one case also includes one solution to cope with the corresponding fault. When a new fault occurs, its failure symptoms are extracted and matched against the case base to look for the most similar case. Furthermore, solution templates are presented considering the business process structure features. We also develop an influential region-based algorithm to minimise the handle cost. Based on our proposed method, a fault-tolerant framework is implemented. Comprehensive experiments are conducted employing a real QoS dataset and the experimental results show that our approach improves the fault-tolerant capability encouragingly.

Guoqiang Li; Lejian Liao; Dandan Song; Zibin Zheng

2014-01-01T23:59:59.000Z

170

Overview of energy-conserving development planning and design techniques based on five case studies  

SciTech Connect

Findings and recommendations are presented of a review of five case studies of ways to conserve energy through development planning and site design in communities. Two approaches were used. In the first approach, a conventional, pre-existing plan was analyzed to determine potential energy use. Once energy-conservation options were identified and evaluated, the conventional plan was modified by employing those options. This approach was used in The Woodlands, Burke Center, and Radisson studies. In the second approach, energy-conservation options are independently identified and evaluated. Those options that passed specific criteria screening were then utilized in developing one or more totally new plans based on energy objectives. This approach was used in Greenbrier and Shenandoah. Radisson is a new town on the outskirts of Syracuse, New York. Greenbrier is a 3000 acre planned community adjacent to Norfolk and Virginia Beach. Shenandoah is a proposed new town in the Atlanta urbanized area. The Woodlands is a new community under development north of Houston. Burke Center is a residential planned unit development in Fairfax County, Virgnia. (MCW)

Not Available

1980-06-01T23:59:59.000Z

171

Habitat-Lite: A GSC case study based on free text terms for environmental metadata  

SciTech Connect

There is an urgent need to capture metadata on the rapidly growing number of genomic, metagenomic and related sequences, such as 16S ribosomal genes. This need is a major focus within the Genomic Standards Consortium (GSC), and Habitat is a key metadata descriptor in the proposed 'Minimum Information about a Genome Sequence' (MIGS) specification. The goal of the work described here is to provide a light-weight, easy-to-use (small) set of terms ('Habitat-Lite') that captures high-level information about habitat while preserving a mapping to the recently launched Environment Ontology (EnvO). Our motivation for building Habitat-Lite is to meet the needs of multiple users, such as annotators curating these data, database providers hosting the data, and biologists and bioinformaticians alike who need to search and employ such data in comparative analyses. Here, we report a case study based on semi-automated identification of terms from GenBank and GOLD. We estimate that the terms in the initial version of Habitat-Lite would provide useful labels for over 60% of the kinds of information found in the GenBank isolation-source field, and around 85% of the terms in the GOLD habitat field. We present a revised version of Habitat-Lite and invite the community's feedback on its further development in order to provide a minimum list of terms to capture high-level habitat information and to provide classification bins needed for future studies.

Kyrpides, Nikos; Hirschman, Lynette; Clark, Cheryl; Cohen, K. Bretonnel; Mardis, Scott; Luciano, Joanne; Kottmann, Renzo; Cole, James; Markowitz, Victor; Kyrpides, Nikos; Field, Dawn

2008-04-01T23:59:59.000Z

172

Model-Based Tool-Chain Infrastructure for Automated Analysis of Embedded Systems  

Science Journals Connector (OSTI)

In many safety-critical applications of embedded systems, the system dynamics exhibits hybrid behaviors. To enable automatic analysis of these ... many analysis tools have been developed based on hybrid automata ...

Hang Su; Graham Hemingway; Kai Chen…

2006-01-01T23:59:59.000Z

173

Improvement of weather analysis in isolated areas of the southern hemisphere by meteorological satellite information: a case study.  

E-Print Network (OSTI)

IMPROVEMENT OF WEATHER ANALYSIS IN ISOLATED AREAS OF THE SOUTHERN HEMISPHERE BY METEOROLOGICAL SATELLITE INFORMATION: A CASE STUDY A Thesis By JOSE ANGEL ALVAREZ Argentine Navy Submitted to the Graduate School of the Agricultural... and Mechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1963 Major Subject: METEOROLOGY IMPROVEMENT OF WEATHER ANALYSIS IN ISOLATED AREAS OF THE SOUTHERN HEMISPHERE BY METEOROLOGICAL SATELLITE...

Alvarez, Jose? Angel

2012-06-07T23:59:59.000Z

174

E-Print Network 3.0 - analysis based lng Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: and physical properties, including the Wobbe index, a measure of energy delivery rate. This analysis uses LNG... receiving terminal in Baja California, Mexico. Based on...

175

E-Print Network 3.0 - activity based analysis Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Sciences 4 Reasoning about Repairability of Workflows at Design Time Summary: activities can be provided by the workflow designer based on the analysis of different aspects...

176

E-Print Network 3.0 - analysis selected case Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Cases: Using Easy Search o Click US Legal o Select "Federal... By Terms Enter search terms Select a jurisdiction (e.g., you may select ALL Federal & State Cases......

177

USAGE: a web-based approach towards the analysis of SAGE data  

Science Journals Connector (OSTI)

... Oxford University Press 2000 Original Paper USAGE: a web-based approach towards the analysis of...an application was not available we developed the USAGE package. Results: USAGE is a web-based application that comprises an integrated......

A. H. C. van Kampen; B. D. C. van Schaik; E. Pauws; E. M. C. Michiels; J. M. Ruijter; H. N. Caron; R. Versteeg; S. H. Heisterkamp; J. A. M. Leunissen; F. Baas; M. van der Mee

2000-10-01T23:59:59.000Z

178

Building Energy Performance Analysis of an Academic Building Using IFC BIM-Based Methodology  

E-Print Network (OSTI)

This paper discusses the potential to use an Industry Foundation Classes (IFC)/Building Information Modelling (BIM) based method to undertake Building Energy Performance analysis of an academic building. BIM/IFC based methodology provides a...

Aziz, Z.; Arayici, Y.; Shivachev, D.

2012-01-01T23:59:59.000Z

179

A Lightweight Code Analysis and its Role in Evaluation of a Dependability Case  

E-Print Network (OSTI)

--Methodologies General Terms Software dependability, safety, reliability Keywords Dependability case, problem frames. We report on a case study constructing a dependability case for the control software of a medical de might be improved. Categories and Subject Descriptors D.2.9 [Software Engineering]: Design

Jackson, Daniel

180

Formal Safety analysis of a radio-based railroad crossing using Deductive Cause-Consequence  

E-Print Network (OSTI)

and effects analysis (FMEA) and fault tree analysis (FTA). We apply the method to a real world case study like FMEA [10], FMECA [4] and FTA [3]. The logical framework of DCCA may be used to rigorously verify of what can by analyzed) than traditional FMEA. We show, that the results of DCCA have the same semantics

Reif, Wolfgang

Note: This page contains sample records for the topic "base case analysis" 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

Automatic stock market trading based on Technical Analysis.  

E-Print Network (OSTI)

?? The theory of technical analysis suggests that future stock price developement can be foretold by analyzing historical price fluctuations and identifying repetitive patterns. A… (more)

Larsen, Fredrik

2007-01-01T23:59:59.000Z

182

Achieving HR-Firm Performance Linkage through Organizational Strategy Implementation: Qualitative Case Studies of Four U.S. Based Firms  

E-Print Network (OSTI)

) implementation in four U.S. based distribution companies. A qualitative case study approach was utilized to answer the following research issues: 1) the role; 2) the extent of HRM&D involvement in LQS implementation and; 3) the effect on organizational...

Alagaraja, Meera

2012-02-14T23:59:59.000Z

183

NETL - Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis 2005  

Open Energy Info (EERE)

NETL - Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis 2005 NETL - Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis 2005 Baseline Model Jump to: navigation, search Tool Summary LAUNCH TOOL Name: NETL - Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis 2005 Baseline Model Agency/Company /Organization: National Energy Technology Laboratory Sector: Energy Topics: Baseline projection, GHG inventory Resource Type: Software/modeling tools Website: www.netl.doe.gov/energy-analyses/refshelf/results.asp?ptype=Models/Too References: NETL - Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis 2005 Baseline Model [1] NETL - Petroleum-Based Fuels Life Cycle Greenhouse Gas Analysis 2005 Baseline Model This model calculates the 2005 national average life cycle greenhouse gas emissions for petroleum-based fuels sold or distributed in the United

184

Strategic Analysis of Real Estate Companies in Hangzhou Based on Value Chain Model  

Science Journals Connector (OSTI)

In this paper, based on Porter’s Value Chain Model, a case study of two real estate companies in Hangzhou was conducted. By the comparison of the two cases, the value added process and some valuable and sustainable resources held by the two companies ...

Yu Pingping

2008-08-01T23:59:59.000Z

185

A novel approach for efficiency assessment of conventional power plants based on principal component analysis  

Science Journals Connector (OSTI)

The investigation of performance efficiency and productivity in power generation sector has become a need due to the importance of energy consumption in the world. Several studies have concentrated on the performance assessment of conventional power plants through mathematical and statistical methods. This paper presents a novel approach based on principal component analysis (PCA) for efficiency assessment of conventional power plants. This study considers the previous approaches, namely: data envelopment analysis (DEA) and PCA for ranking of decision-making units (DMUs). The applicability and superiority of the proposed approach is shown for 15 actual conventional power plants. We also applied the proposed approach to other datasets in previous studies to show its advantages. The numerical results showed that the proposed approach provides better solution than previous studies. It has been shown that in some cases the effect of the number of efficient units is contrary to what previous studies have already predicted. Moreover, the results of the novel approach provide better rankings than previous studies.

Ali Azadeh; Mahmoud Ghiasi Moaser

2010-01-01T23:59:59.000Z

186

Transient Signal Analysis (TSA) is a parametric device testing technique based on the analysis of dynamic (transient) current  

E-Print Network (OSTI)

such as primary outputs or scan-latches. Third, the supply transients potentially provide a rich source of parametAbstract Transient Signal Analysis (TSA) is a parametric device testing technique based on the analysis of dynamic (transient) current (iDDT) drawn by the core logic from the power supply pads in a CMOS

Plusquellic, James

187

Fuzzy Logic-based energy efficiency Life Cycle Assessment with a case study of corn-based fuel ethanol in China  

Science Journals Connector (OSTI)

A fuzzy logic based method of energy efficiency assessment of Biomass-based Fuel Ethanol (BFE) production is introduced in this paper. Energy relevant inventory variables are defined and described by fuzzy sets representing the differences in energy inventory data between the BFE system and its reference. A fuzzy reasoning process is developed to derive the energy efficiency from the fuzzificated inventory data. This method distinguishes itself by simple calculation, lower requirements of data accuracy and capability of processing subjectivity. A case study of corn-based fuel ethanol from Northeast China is conducted to demonstrate the application of the proposed method.

Suiran Yu; Jing Tao

2009-01-01T23:59:59.000Z

188

Context-Sensitive Measurement-Based Worst-Case Execution Time Estimation Michael Zolda, Sven Bunte  

E-Print Network (OSTI)

analysis (MBTA) [1], we estimate the WCET of a given piece of software by executing it with selected input

189

Global sensitivity analysis in the development of first principle-based eutrophication models  

Science Journals Connector (OSTI)

In this work, we formulate a dynamic first principle-based eutrophication model for a reservoir and perform global sensitivity analysis to determine most influential parameters. Both first-order and total sensitivity indices profiles have been calculated ... Keywords: Eutrophication, First principle-based water quality model, Global sensitivity analysis, Sensitivity indices

V. Estrada; M. S. Diaz

2010-12-01T23:59:59.000Z

190

Inverting geodetic time series with a principal component analysis-based inversion method  

E-Print Network (OSTI)

Inverting geodetic time series with a principal component analysis-based inversion method A. P (2010), Inverting geodetic time series with a principal component analysis-based inversion method, J; Cohen, 1999]. This formulation is linear and easily inverted using standard algorithms. The distribution

Avouac, Jean-Philippe

191

Evolutionary-algorithm-based analysis of gravitational microlensing light curves  

Science Journals Connector (OSTI)

......results of Vermaak ( , ); they cover most of the lensing zone, and...fitting binary light curves Given a set of parameters, obtaining the...priors that avoid hard limits - to cover cases where the secondary lens...the general algorithm otherwise set-up in much the same way as......

V. Rajpaul

2012-12-01T23:59:59.000Z

192

Raw Garlic Consumption as a Protective Factor for Lung Cancer, a Population-Based Case–Control Study in a Chinese Population  

Science Journals Connector (OSTI)

...air pollution, coal-related pollution...cancer, a meta-analysis based on limited...in the present analysis to increase statistical power. From 2003 to...demographic and social economic status, weekly...Statistical analysis Data were entered...

Zi-Yi Jin; Ming Wu; Ren-Qiang Han; Xiao-Feng Zhang; Xu-Shan Wang; Ai-Ming Liu; Jin-Yi Zhou; Qing-Yi Lu; Zuo-Feng Zhang; and Jin-Kou Zhao

2013-07-01T23:59:59.000Z

193

Network Based Evaluation Method for Financial Analysis of Toll Roads  

E-Print Network (OSTI)

was $25,003 millions (Yescombe, 2002). There are three main quantitative methods for pricing of bonds used in the credit risk analysis: structural, reduced, and incomplete information approach (Giesecke, 2004). At the center of the credit risk...

Vajdic, Nevena

2011-02-22T23:59:59.000Z

194

An Improved AMG-based Method for Fast Power Grid Analysis Cheng Zhuo, Jiang Hu1  

E-Print Network (OSTI)

An Improved AMG-based Method for Fast Power Grid Analysis Cheng Zhuo, Jiang Hu1 and Kangsheng Chen and verification. Meanwhile, the huge size of power grid requires its analysis to be fast and highly scalable. Algebraic multigrid (AMG) has been recognized as a promising approach for fast power grid analysis. We

Hu, Jiang

195

DOE'S ENERGY DATA BASE (EDB) VERSUS OTHER ENERGY-RELATED DATA BASES: A COMPARATIVE ANALYSIS  

E-Print Network (OSTI)

n c i s c o , CA, DOE'S ENERGY DATA BASE (EDB) VERSUS OTHERData Baae: History The Energy Data Base it produced by thethe aim of the Energy Data Base i s to be a comprehensive

Robinson, J.

2010-01-01T23:59:59.000Z

196

Comparing the performance of base map scales in GIS-based avalanche simulation: a case study from Palandöken, Turkey  

Science Journals Connector (OSTI)

Snow avalanches are very complex and dynamic events that cause serious risk to human lives, infrastructure, and facilities in mountain environments. In this study, GIS-based avalanche simulations were investigate...

Abdurrahim Ayd?n

2010-10-01T23:59:59.000Z

197

Enhanced oil recovery data base analysis by simplified predictive models  

SciTech Connect

The U.S. Department of Energy, Bartlesville Energy Technology Center (BETC), has been developing computerized data bases and simplified predictive models to be used to predict enhanced oil recovery (EOR) potential in the U.S. The development phase of this work is nearing completion whereupon the models and data bases will be made available to the public. This paper describes the overall development phase for the models and data bases with analyses of selected EOR projects using the predictive models. Examples of model outputs are discussed and brief descriptions of the predictive algorithms are given.

Ray, R.M.; Wesson, T.C.

1982-11-01T23:59:59.000Z

198

One Work Analysis, Two Domains: A Display Information Requirements Case Study  

E-Print Network (OSTI)

d observations, among other techniques. Given the time and resources required, we examine how to generalize a work domain analysis technique, namely the hybrid Cognitive Task Analysis (hCTA) method across two domains in ...

Cummings, M. L.

2012-01-01T23:59:59.000Z

199

Type curve analysis for naturally fractured reservoirs (infinite-acting reservoir case): a new approach  

E-Print Network (OSTI)

analysis methods are sometimes inconclusive for pressure transient analysis of wells completed in naturally fractured reservoirs. This is due to wellbore storage effects which mask the early time "straight-line" that is expected on the semilog plot...

Angel Restrepo, Juan Alejandro

2012-06-07T23:59:59.000Z

200

VALIDATION OF PV PERFORMANCE MODELS USING SATELLITE-BASED IRRADIANCE MEASUREMENTS: A CASE STUDY  

E-Print Network (OSTI)

performance model results are affected when satellite- based weather data is used in place of ground from a relatively small number of locations. In contrast, satellite-based radiation and weather data (e performance models using both ground and satellite-based weather inputs and compare model results

Perez, Richard R.

Note: This page contains sample records for the topic "base case analysis" 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

DOE Hydrogen Analysis Repository: Gasification-Based Fuels and Electricity  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification-Based Fuels and Electricity Production from Biomass Gasification-Based Fuels and Electricity Production from Biomass Project Summary Full Title: Gasification-Based Fuels and Electricity Production from Biomass, without and with Carbon Capture and Storage Project ID: 226 Principal Investigator: Eric D. Larson Keywords: Biomass; Fischer Tropsch; hydrogen Purpose Develop and analyze process designs for gasification-based thermochemical conversion of switchgrass into Fischer-Tropsch (F-T) fuels, dimethyl ether (DME), and hydrogen. All process designs will have some level of co-production of electricity, and some will include capture of byproduct CO2 for underground storage. Performer Principal Investigator: Eric D. Larson Organization: Princeton University Telephone: 609-258-4966 Email: elarson@princeton.edu

202

An Analysis of TRL-Based Cost and Schedule Models  

E-Print Network (OSTI)

The GAO's, NASA's, and the DoD's adoption of the technology readiness level (TRL) scale to improve technology management has led to the emergence of many TRL-based models that are used to monitor technology maturation, ...

Kenley, C. Robert

2012-04-30T23:59:59.000Z

203

Security Analysis and Improvement Model for Web-based Applications  

E-Print Network (OSTI)

, confidentiality, and data integrity. According to the reports from http://www.securityfocus.com in May 2006, operating systems account for 9% vulnerability, web-based software systems account for 61% vulnerability, and other applications account for 30...

Wang, Yong

2010-01-14T23:59:59.000Z

204

The Muzzi marsh: a case study and analysis of wetland restoration decision-making in San Francisco Bay  

E-Print Network (OSTI)

THE MUZZI MARSH: A CASE STUDY AND ANALYSIS OF WETLAND RESTORATION DECISION-MAKING IN SAN FRANCISCO SAY A Thesis by WILLIAM JOSEPH RRAH Subm1tted to the Graduate College of Texas ASM University i n part1 al fulf11 l ment of the requirement... for the degree of MASTER OF SCIENCE May 1982 Major Subject: Management THE NUZ71 NPRSH: A CASF STUDY AND ANALYSIS UF ~WETLAND RESTORATION DECISION-NP, KIN( IN SAN FRANCISCO BAY A Thesis hy blI L LIAM JOSEPH BRAH Approved as to style and content hy: C...

Brah, William Joseph

2012-06-07T23:59:59.000Z

205

Functional Gene Array-Based Analysis of Microbial Community  

E-Print Network (OSTI)

correspondence analysis indicate that nitrate, sulfate, pH, uranium, and technetium have a significant (p diversity with geochemistry, we can better understand which variables are most important in deter- mining studied for bioremediation of heavy metals due to legacy contamination from Cold War-era uranium

Hazen, Terry

206

A Simple Biomass-Based Length-Cohort Analysis for Estimating Biomass and Fishing Mortality  

E-Print Network (OSTI)

, Washington 98115, USA Abstract.--A biomass-based length-cohort analysis (LCA) was examined for its compared two LCA methods--(1) a numbers-based LCA that relies on catch numbers at length as input data and (2) a new biomass-based LCA that relies on catch biomass at length--by applying both to simulated

207

Signal Probability Based Statistical Timing Analysis University of California, San Diego  

E-Print Network (OSTI)

Signal Probability Based Statistical Timing Analysis Bao Liu University of California, San Diego propose sig- nal probability (i.e., the logic one occurrence probability on a net) based statistical estimation tech- niques are categorized as (1) static, (2) statistical, and (3) simulation and testing based

Liu, Bao

208

PATCH-BASED MARKOV MODELS FOR CHANGE DETECTION IN IMAGE SEQUENCE ANALYSIS  

E-Print Network (OSTI)

PATCH-BASED MARKOV MODELS FOR CHANGE DETECTION IN IMAGE SEQUENCE ANALYSIS Thierry P image. In this paper, we propose an original patch-based Markov modeling framework to de- tect spatial are then detected. Therefore, we propose an original patch-based Markov modeling that detects irregu- larities

Paris-Sud XI, Université de

209

Linear model-based estimation of blood pressure and cardiac output for Normal and Paranoid cases  

Science Journals Connector (OSTI)

Provisioning a generic simple linear mathematical model for Paranoid and Healthy cases leading to auxiliary investigation of the neuroleptic drugs effect imposed on cardiac output (CO) and blood pressure (BP). Multi-input single output system identification ... Keywords: Blood pressure, Cardiac output, Heart rate, MISO transfer function, Stroke volume, System identification

Mohamed Abdelkader Aboamer, Ahmad Taher Azar, Khaled Wahba, Abdallah S. Mohamed

2014-11-01T23:59:59.000Z

210

An intelligent information access system assisting a case based learning methodology evaluated in higher education with medical students  

Science Journals Connector (OSTI)

In recent years there has been a shift in educational methodologies toward a student-centered approach, one which increasingly emphasizes the integration of computer tools and intelligent systems adopting different roles. In this paper we describe in detail the development of an Intelligent Information Access system used as the basis for producing and assessing a constructivist learning methodology with undergraduate students. The system automatically detects significant concepts available within a given clinical case and facilitates an objective examination, following a proper selection process of the case in which is taken into account the students’ knowledge level. The learning methodology implemented is intimately related to concept-based, case-based and internet-based learning. In spite of growing theoretical research on the use of information technology in higher education, it is rare to find applications that measure learning and students’ perceptions and compare objective results with a free Internet search. Our work enables students to gain understanding of the concepts in a case through Web browser interaction with our computer system identifying these concepts and providing direct access to enriched related information from Medlineplus, Freebase and PubMed. In order to evaluate the learning activity outcomes, we have done a trial run with volunteer students from a 2nd year undergraduate Medicine course, dividing the volunteers into two groups. During the activity all students were provided with a clinical case history and a multiple choice test with medical questions relevant to the case. This test could be done in two different ways: learners in one group were allowed to freely seek information on the Internet, while the other group could only search for information using the newly developed computer tool. In the latter group, we measured how students perceived the tool’s support for solving the activity and the Web interface usability, supplying them with a Likert questionnaire for anonymous completion. The particular case selected was a female with a medical history of heart pathology, from which the system derived medical terms closely associated with her condition description, her clinical evolution and treatment.

Fernando Aparicio; Manuel De Buenaga; Margarita Rubio; Asunción Hernando

2012-01-01T23:59:59.000Z

211

Climate Policy Decisions Require Policy-Based Lifecycle Analysis  

Science Journals Connector (OSTI)

Lifecycle analysis (LCA) metrics of greenhouse gas emissions are increasingly being used to select technologies supported by climate policy. ... For example, an economic framework used to evaluate biofuel policies in the US should at least incorporate fuel blenders, which is the sector regulated by biofuel policies, domestic and international agriculture and land markets, which are impacted by expansions in biofuels, and domestic and international fuel markets, which are affected by reduced demand for gasoline. ...

Antonio M. Bento; Richard Klotz

2014-04-18T23:59:59.000Z

212

Evaluation of motion-based interaction for mobile devices: A case study on image browsing  

Science Journals Connector (OSTI)

......results of the motion-sensing interfaces. These trends were well reflected in the statistical analysis where the Kruskal-Wallis non-parametric test (Kruskal and Wallis, 1952; Montgomery and Montgomery, 1997 ) was applied to the data of......

Sunghoon Yim; Sungkil Lee; Seungmoon Choi

2011-05-01T23:59:59.000Z

213

Resource-based industrialization in Peninsular Malaysia. A case study of the rubber products manufacturing industry.  

E-Print Network (OSTI)

??This economic history and examination of the rubber products manufacturing industry in Peninsular Malaysia contributes to the subject of resource-based industrialization in the field of… (more)

Goldthorpe, Christopher C.

2009-01-01T23:59:59.000Z

214

Validation of PV performance models using satellite-based irradiance measurements : a case study.  

SciTech Connect

Photovoltaic (PV) system performance models are relied upon to provide accurate predictions of energy production for proposed and existing PV systems under a wide variety of environmental conditions. Ground based meteorological measurements are only available from a relatively small number of locations. In contrast, satellite-based radiation and weather data (e.g., SUNY database) are becoming increasingly available for most locations in North America, Europe, and Asia on a 10 x 10 km grid or better. This paper presents a study of how PV performance model results are affected when satellite-based weather data is used in place of ground-based measurements.

Stein, Joshua S.; Parkins, Andrew (Clean Power Research); Perez, Richard (University at Albany)

2010-05-01T23:59:59.000Z

215

Realistic Performance Analysis of WSN Protocols Through Trace Based Simulation  

E-Print Network (OSTI)

. Generic network simulators are often used, but they tend to rely on synthetic models. Because WSN enable trace based WSN simulation by first enhancing an existing WSN profiler that automates. These include simulation area, node density, radio model, noise model, etc. These parameters are used

Han, Qi "Chee"

216

Analysis of WebBased Simulation Data Andrew F. Seila  

E-Print Network (OSTI)

simulation, all output data depend upon the initial state of the system. The objective of running a transient simulation is to estimate a system parameter that is conditioned on the starting state. A steady and systems. The use of beans in Web­based simulation allows many independently developed components to work

Miller, John A.

217

Face-based multiple instance analysis for smart electronics billboard  

Science Journals Connector (OSTI)

This paper introduces a visual-based system, which can count the number of viewers and recognize their gender in front of an electronic billboard in real-time video streams. The viewers actually watching an advertisement are captured via frontal face ... Keywords: Electronic billboard, Gender recognition, Viewer counting

Duan-Yu Chen; Kuan-Yi Lin

2012-07-01T23:59:59.000Z

218

Video surveillance-based insulator condition monitoring analysis for substation monitoring system (SMS)  

Science Journals Connector (OSTI)

Video surveillance (VS) of electric power lines along with its accessories such as insulators has emerged as a potential alternative for the traditional practice of on-site physical detection. There has been a paradigm shift in electric substation automation using substation monitoring system (SMS). Since the damaged insulators severely affect the distribution system performance in terms of reduction in voltage as well as flow of leakage currents, therefore, the incorporation of insulator health as an augmented feature in SMS would improve the quality and reliability of power supply. By using information technology, the automation of insulator monitoring of power system is made faster to recover the fault system immediately. This paper presents a methodology for insulator condition analysis based on VS combined with wavelet coefficient differentiator (WCD) for SMS purposes. The case studies and results contained herein corroborate the efficacy of the proposed methodology to dispense with the conventional on-site physical methods, which are not only tedious, but also time-consuming.

Velaga Sreerama Murthy; D.K. Mohanta; Sumit Gupta

2011-01-01T23:59:59.000Z

219

Job analysis and job satisfaction : case Hello Cafe and SSP Finland Ltd.  

E-Print Network (OSTI)

??The objective of this research was to study the relationship between job analysis and job satisfaction by using a qualitative research method. This study is… (more)

Boulanger, Julien

2013-01-01T23:59:59.000Z

220

Accessibility analysis for telecommuting: a GIS-based approach  

E-Print Network (OSTI)

Basemap. shp Travis County Cancel Figure 4-3: Example of interface for base map generation 4. 4. 2 Impedance function calculation ~ Measuring the distance matrix for the study area In transport models, measurements of physical separation between... of each TAZ must be constructed first. phk Ihe ptopmtion theme Comnmtmg tune. shp Distance shp Austrnu shp Str. addtess shp Build pshp mean travel time ~DK pick Ihe mean ccmrmrting lane theme Coomutmg time shp Durance ptopotson shp Distance shp...

Chen, Chun

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Single-Step Syngas-to-Distillates (S2D) Process Based on Biomass-Derived Syngas - A Techno-Economic Analysis  

SciTech Connect

This study compared biomass gasification based syngas-to-distillate (S2D) systems using techno-economic analysis (TEA). Three cases, state of technology (SOT), goal, and conventional, were compared in terms of performance and cost. The SOT case represented the best available experimental results for a process starting with syngas using a single-step dual-catalyst reactor for distillate generation. The conventional case mirrored a conventional two-step S2D process consisting of separate syngas-to-methanol and methanol-to-gasoline (MTG) processes. The goal case assumed the same performance as the conventional, but with a single-step S2D technology. TEA results revealed that the SOT was more expensive than the conventional and goal cases. The SOT case suffers from low one-pass yield and high selectivity to light hydrocarbons, both of which drive up production cost. Sensitivity analysis indicated that light hydrocarbon yield and single pass conversion efficiency were the key factors driving the high cost for the SOT case.

Zhu, Y.; Jones, S. B.; Biddy, M. J.; Dagle, R. A.; Palo, D. R.

2012-08-01T23:59:59.000Z

222

Implementation and evaluation of a hypercube-based method for spatio-temporal exploration and analysis  

E-Print Network (OSTI)

) Introduction Spatio-temporal exploration and spatio-temporal analysis are two complementary processes of spatio) dealing with spatio-temporal data (Marchand et al., 2002). The exploration process identifies hypotheses of the hypotheses formulated in the exploration process and, in some cases, proposes new ones. The EDA iterative

223

Reliability sensitivity analysis based on probability distribution perturbation with application to CO2 storage  

E-Print Network (OSTI)

to CO2 storage Ekaterina Sergienkoa,b , Paul Lema^itrec,d , Aur´elie Arnaudc , Daniel Busbyb , Fabrice a computationally expensive simulation code for evaluating the failure probability such as the CO2 storage risk analysis. An application of the method to a synthetic CO2 storage case study is provided together with some

Boyer, Edmond

224

ADVANCED EXERGY ANALYSIS APPLIED TO THE GAS-TURBINE BASED CO-GENERATION SYSTEM.  

E-Print Network (OSTI)

??The thesis focuses on the evaluation and improvement of a gas-turbine based co-generation system, from an exergetic point of view. A conventional exergy analysis has… (more)

AZZARELLI, GIUSEPPE

2008-01-01T23:59:59.000Z

225

Proof Details for "Performance Analysis of Godard-Based Blind Channel Identification"  

E-Print Network (OSTI)

1 Proof Details for "Performance Analysis of Godard-Based Blind Channel Identification" Philip) The bulk of the proof is spent analyzing the righthand term above. E ^^h(0) i - ^h(0) i 2 2 = E ^^h(0) i 2

Schniter, Philip

226

Turbulent Patch Identification in Microstructure Profiles: A Method Based on Wavelet Denoising and Thorpe Displacement Analysis  

Science Journals Connector (OSTI)

A new method based on wavelet denoising and the analysis of Thorpe displacements dT profiles is presented for turbulent patch identification. Thorpe profiles are computed by comparing the observed density profile ?(z) and the monotonic density ...

Jaume Piera; Elena Roget; Jordi Catalan

2002-09-01T23:59:59.000Z

227

Automatic Sensitivity Analysis of DAE-systems Generated from Equation-Based Modeling Languages  

Science Journals Connector (OSTI)

This paper aims at sensitivity analysis of differential algebraic equation (DAE) systems, generated from mathematical models, specified in equation-based modeling languages. Modern simulation languages (e.g. M...

Atya Elsheikh; Wolfgang Wiechert

2008-01-01T23:59:59.000Z

228

Techniques for Hydrograph Synthesis Based on Analysis of Data from Small Drainage Basins in Texas  

E-Print Network (OSTI)

TR-3 1966 Techniques for Hydrograph Synthesis Based on Analysis of Data from Small Drainage Basins in Texas M.D. Hudlow Texas Water Resources Institute Texas A&M University ...

Hudlow, M.D.

229

Renewable Energy-Based Mini-Grid for Rural Electrification: Case Study of an Indian Village  

Science Journals Connector (OSTI)

Although off-grid electrification has become a cost-effective and ... individual options receive greater attention; and when mini-grid-based solutions are considered, traditionally a single ... energy technologie...

Rohit Sen; Subhes C. Bhattacharyya

2014-01-01T23:59:59.000Z

230

Approach for Designing Solar Photovoltaic-Based Mini-Grid Projects: A Case Study from India  

Science Journals Connector (OSTI)

Having the largest rural population in the world, India confronts a huge challenge for rural electrification, especially for electrifying remote, forested and tribal habitations. Solar Photovoltaic-based mini-grids

K. Rahul Sharma; Debajit Palit…

2014-01-01T23:59:59.000Z

231

Rights-based evaluation of government responses to a given 'natural' disaster : Katrina as case study  

E-Print Network (OSTI)

Disaster impacts human mobility and a rights-based approach to disaster response is needed to protect the human rights of those who seek migration as an adaptation strategy. This paper deals with returning to a place after ...

Haeffner, Melissa (Melissa Ann)

2010-01-01T23:59:59.000Z

232

Collective action for community-based hazard mitigation: a case study of Tulsa project impact  

E-Print Network (OSTI)

During the past two decades, community-based hazard mitigation (CBHM) has been newly proposed and implemented as an alternative conceptual model for emergency management to deal with disasters comprehensively in order to curtail skyrocketing...

Lee, Hee Min

2005-11-01T23:59:59.000Z

233

Localized change management in two cases : supply base cost escalation and obsolescence management  

E-Print Network (OSTI)

There are several models for change available to modern organizations based on decades of research. This research tends to focus on broad changes, such as enterprise transformations. This thesis presents a model developed ...

Harris Robert J., Jr. (Robert Jerrell)

2014-01-01T23:59:59.000Z

234

Computers & Geosciences 29 (2003) 351359 A case against Kd-based transport models: natural attenuation  

E-Print Network (OSTI)

attenuation at a mill tailings site Chen Zhu* Department of Geology and Planetary Science, University)-based transport model. The study site is a contaminated groundwater aquifer underneath a uranium mill tailings

Polly, David

235

ESS 2012 Peer Review - Iron Based Flow Batteries for Low Cost Grid Level Energy Storage - Jesse Wainright, Case Western Reserve  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

authors gratefully acknowledge the support of the Department of Energy/Office of Electricity's Energy Storage Program. authors gratefully acknowledge the support of the Department of Energy/Office of Electricity's Energy Storage Program. Iron Based Flow Batteries for Low Cost Grid Level Energy Storage J.S. Wainright, R. F. Savinell, P.I.s Dept. of Chemical Engineering, Case Western Reserve University Purpose Impact on Iron Based Batteries on the DOE OE Energy Storage Mission Recent Results Recent Results Develop efficient, cost-effective grid level storage capability based on iron. Goals of this Effort: * Minimize Cost/Watt by increasing current density - Hardware Cost >> Electrolyte Cost * Minimize Cost/Whr by increasing plating capacity * Maximize Efficiency by minimizing current lost to hydrogen evolution Electrochemistry of the all-Iron system:

236

Experimental Analysis of Water Based Drilling Fluid Aging Processes at High Temperature and High Pressure Conditions  

E-Print Network (OSTI)

! ! EXPERIMENTAL ANALYSIS OF WATER BASED DRILLING FLUID AGING PROCESSES AT HIGH TEMPERATURE AND HIGH PRESSURE CONDITIONS A Thesis by BRANDON SCOTT ZIGMOND Submitted to the Office of Graduate Studies of Texas A&M University... Temperature and High Pressure Conditions Copyright 2012 Brandon Scott Zigmond ! ! EXPERIMENTAL ANALYSIS OF WATER BASED DRILLING FLUID AGING PROCESSES AT HIGH TEMPERATURE AND HIGH PRESSURE CONDITIONS A Thesis by BRANDON SCOTT ZIGMOND Submitted...

Zigmond, Brandon

2012-10-19T23:59:59.000Z

237

A column based variance analysis approach to static reservoir model upgridding  

E-Print Network (OSTI)

A COLUMN BASED VARIANCE ANALYSIS APPROACH TO STATIC RESERVOIR MODEL UPGRIDDING A Thesis by MATTHEW BRANDON TALBERT Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 2008 Major Subject: Petroleum Engineering A COLUMN BASED VARIANCE ANALYSIS APPROACH TO STATIC RESERVOIR MODEL UPGRIDDING A Thesis by MATTHEW BRANDON TALBERT Submitted to the Office...

Talbert, Matthew Brandon

2008-10-10T23:59:59.000Z

238

Design and analysis of an Extended Kalman Filter based navigator for an autonomous underwater vehicle  

E-Print Network (OSTI)

DESIGN AND ANALYSIS OF AN EXTENDED KALMAN FILTER BASED NAVIGATOR FOR AN AUTONOMOUS UNDERWATER VEHICLE A Thesis by BRADLEY EUGENE JUST Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1994 Major Subject: Mechanical Engineering DESIGN AND ANALYSIS OF AN EXTENDED KALMAN FILTER BASED NAVIGATOR FOR AN AUTONOMOUS UNDERWATER VEHICLE A Thesis by BRADLEY EUGENE JUST Submitted to Texas A...

Just, Bradley Eugene

2012-06-07T23:59:59.000Z

239

Variability Analysis of Complex Networks Measures based on Stochastic Distances  

E-Print Network (OSTI)

Complex networks can model the structure and dynamics of different types of systems. It has been shown that they are characterized by a set of measures. In this work, we evaluate the variability of complex networks measures face to perturbations and, for this purpose, we impose controlled perturbations and quantify their effect. We analyze theoretical models (random, small-world and scale-free) and real networks (a collaboration network and a metabolic networks) along with the shortest path length, vertex degree, local cluster coefficient and betweenness centrality measures. In such analysis, we propose the use of three stochastic quantifiers: the Kullback-Leibler divergence and the Jensen-Shannon and Hellinger distances. The sensitivity of these measures was analyzed with respect to the following perturbations: edge addition, edge removal, edge rewiring and node removal, all of them applied at different intensities. The results reveal that the evaluated measures are influenced by these perturbations. Additio...

Cabral, Raquel; Ramírez, Jaime

2014-01-01T23:59:59.000Z

240

Neutronics analysis for an accelerator-based nuclear waste transmuter  

SciTech Connect

The neutronic analysis for a target/blanket design that is capable of supporting the high level waste stream from 2.5 LWR`s is described. The target consists of a set of solid tungsten and lead plates, cooled by heavy water and surrounded by a lead annulus. The annular blanket, which surrounds the target, consists of a set of AcO{sub 2} slurry bearing tubes, each 3 meters long, surrounded by heavy water moderator. Heat removal from the slurry tubes is by passing the rapidly moving slurry through an external heat exchanger. There are separate regions for long-lived fission product burning. Using the Monte Carlo codes LAHET and MCNP we have optimized the design for a minimum beam current of 62.5 mA of 1.6 GeV protons.

Sailor, W.C.; Beard, C.A.

1993-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Safety analysis of software product lines using state-based modeling q , Josh Dehlinger a  

E-Print Network (OSTI)

Safety analysis of software product lines using state-based modeling q Jing Liu a , Josh Dehlinger of managing variations and their potential interactions across an entire product line currently hinders safety analysis in safety-critical, software product lines. The work described here contributes to a solution

Lutz, Robyn R.

242

ATLAS-BASED FIBER CLUSTERING FOR MULTI-SUBJECT ANALYSIS OF HIGH ANGULAR RESOLUTION DIFFUSION  

E-Print Network (OSTI)

ATLAS-BASED FIBER CLUSTERING FOR MULTI-SUBJECT ANALYSIS OF HIGH ANGULAR RESOLUTION DIFFUSION and a co-registered probabilistic DTI atlas to select key pathways, applied a threshold and median anatomy 3. Make tract analysis robust to differences in the atlas and subject 1. Image Data · 105-gradient

Thompson, Paul

243

An analysis and validation pipeline for large-scale RNAi-based screens  

E-Print Network (OSTI)

An analysis and validation pipeline for large-scale RNAi-based screens Michael Plank1 , Guang Hu2 pipeline to prioritize these candidates incorporating effect sizes, functional enrichment analysis associated with oxidative stress resistance, as a proof-of-concept of our pipeline we demonstrate

de MagalhĂŁes, JoĂŁo Pedro

244

Experimental Analysis of Task-based Energy Consumption in Cloud Computing Systems  

E-Print Network (OSTI)

computing, green cloud, energy consumption, performance analysis, energy efficiency. 1. INTRODUCTION Cloud in green cloud computing systems [4]. Many efforts have been made to improve the energy efficiency of cloudExperimental Analysis of Task-based Energy Consumption in Cloud Computing Systems Feifei Chen, John

Schneider, Jean-Guy

245

Stochastic Analysis and Improvement of the Reliability of DHT-based Multicast  

E-Print Network (OSTI)

applications, such as text/voice streaming and distributed white board. Reliability is one of the major the distribution of node residual lifetime, which plays a fundamental role in the reliability analysis throughoutStochastic Analysis and Improvement of the Reliability of DHT-based Multicast Guang Tan and Stephen

Jarvis, Stephen

246

Motivation in software engineering industrial practice: A cross-case analysis of two software organisations  

Science Journals Connector (OSTI)

Context: The research about motivation in software engineering has provided important insights into characterizing factors and outcomes related to motivation. However, the complex relationships among these factors, including the moderating and mediating ... Keywords: Meta-ethnography, Motivation, Multi-case replication design, Qualitative research, Software engineer, Software engineering

A. César C. França; Fabio Q. B. Da Silva; Adelnei De L. C. Felix; David E. S. Carneiro

2014-01-01T23:59:59.000Z

247

Analysis of Airport Performance using Surface Surveillance Data: A Case Study of BOS  

E-Print Network (OSTI)

operational performance of an airport, and present them for the specific case of Boston Logan International. For this study, we used ASDE-X data from Boston Logan International Airport (BOS), dra of Technology, Cambridge, MA 02139. hamsa@mit.edu. AIAA Member. Operations Manager, Boston Airport Traffic

Gummadi, Ramakrishna

248

A Comparison of Two Approaches to Safety Analysis Based on Use Cases  

Science Journals Connector (OSTI)

Engineering has a long tradition in analyzing the safety of mechanical, electrical and electronic systems. Important methods like HazOp and FMEA have also been adopted by the software ... by the software communit...

Tor Stĺlhane; Guttorm Sindre

2007-01-01T23:59:59.000Z

249

Public–private partnerships value in bioenergy projects: Economic feasibility analysis based on two case studies  

Science Journals Connector (OSTI)

Abstract Greece and Italy are facing serious energy challenges concerning sustainability and greenhouse gas emissions as well as security of supply and the competitiveness of the internal energy market. These challenges require investments by the public sector, while the countries have seen in the last years their debts rising. A solution to promote bioenergy business, without rising public debt, could be the use of PPP (Public–Private Partnership). This paper presents a methodology to develop agro-energy business using PPP in two rural areas: the municipality of Evropos (in Greece) and the municipality of Montefalco (in Italy). At first biomass availability is studied, then the optimal technology is selected. Once technological issues have been analyzed PPP value for money has to be assessed. Conventional methods to evaluate economic viability of a project are not enough and a Public-Sector Comparator (PSC) has to be calculated. Typical risks of bioenergy projects are identified, estimating their probabilities and consequences. This will lead to associate a monetary value to each risk. Then the identified risks are allocated among private and public partners, establishing synergies. The allocation of risks will have consequences on the preparation of PPP contract and on partner selection procedure.

Francesco Fantozzi; Pietro Bartocci; Bruno D'Alessandro; Stratos Arampatzis; Basil Manos

2014-01-01T23:59:59.000Z

250

Cost-effectiveness analysis of genetic testing for familial long QT syndrome in symptomatic index cases  

E-Print Network (OSTI)

Cost-Effectiveness Analysis of Genetic Testing for FamilialJ, Russell L, Weinstein M. Cost-effectiveness in health andSakowski J: An introduction to cost- effectiveness and cost-

Phillips, Kathryn A; Ackerman, M J; Sakowski, J; Berul, C I

2005-01-01T23:59:59.000Z

251

The Complex Network Analysis of Power Grid: A Case Study of the West Bengal Power Network  

Science Journals Connector (OSTI)

Complex network analysis is a new multidisciplinary approach to characterize the structure and function of power grid as a complex network to establish the ... blackouts. In this article, we model the power grid ...

Himansu Das; Gouri Sankar Panda…

2014-01-01T23:59:59.000Z

252

An analysis of asymmetric demand response to price changes: The case of local telephone calls  

Science Journals Connector (OSTI)

Asymmetric demand responses to price changes are not an observable ... empirical studies generally support the theory of asymmetric demand responses. We construct a dynamic model based on...

Miles O. Bidwell Jr.; Bruce X. Wang; J. Douglas Zona

1995-11-01T23:59:59.000Z

253

Spatial GHG Inventory: Analysis of Uncertainty Sources. A Case Study for Ukraine  

Science Journals Connector (OSTI)

A geoinformation technology for creating spatially distributed greenhouse gas inventories based on a methodology provided by the Intergovernmental Panel on Climate Change and special software linking input dat...

R. Bun; M. Gusti; L. Kujii; O. Tokar; Y. Tsybrivskyy…

2007-01-01T23:59:59.000Z

254

Hybrid Scenario Based Performance Analysis of DSDV and DSSR  

E-Print Network (OSTI)

The area of mobile ad hoc networking has received considerable attention of the research community in recent years. These networks have gained immense popularity primarily due to their infrastructure-less mode of operation which makes them a suitable candidate for deployment in emergency scenarios like relief operation, battlefield etc., where either the pre-existing infrastructure is totally damaged or it is not possible to establish a new infrastructure quickly. However, MANETs are constrained due to the limited transmission range of the mobile nodes which reduces the total coverage area. Sometimes the infrastructure-less ad hoc network may be combined with a fixed network to form a hybrid network which can cover a wider area with the advantage of having less fixed infrastructure. In such a combined network, for transferring data, we need base stations which act as gateways between the wired and wireless domains. Due to the hybrid nature of these networks, routing is considered a challenging task. Several r...

Majumder, Koushik; 10.5121/ijcsit.2010.2305

2010-01-01T23:59:59.000Z

255

Integrating bibliometrics and roadmapping methods: A case of dye-sensitized solar cell technology-based industry in China  

Science Journals Connector (OSTI)

Abstract Emerging industries are attracting increasing attention as they engage in innovation activities that transgress the boundaries of science and technology. Policy makers and industrial communities use roadmapping methods to predict future industrial growth, but the existing bibliometric/workshop methods have limitations when analyzing the full-lifecycle industrial emergence, including the transitions between science, technology, application, and the mass market. This paper, therefore, proposes a framework that integrates bibliometrics and a technology roadmapping (TRM) workshop approach to strategize and plan the future development of the new, technology-based industry. The dye-sensitized solar cell technology-based industry in China is selected as a case study. In this case, the bibliometrics method is applied to analyze the existing position of science and technology, and TRM workshops are used to strategize the future development from technology to application and marketing. Key events and impact on the development of the new, technology-based industry have been identified. This paper will contribute to the roadmapping and foresight methodology, and will be of interest to solar photovoltaic industry researchers.

Xin Li; Yuan Zhou; Lan Xue; Lucheng Huang

2014-01-01T23:59:59.000Z

256

Determinants of Success for Community-based Tourism: The Case of Floating Markets in Thailand  

E-Print Network (OSTI)

of participatory planning in Indonesia (1999), Li’s (2006) study of community participation in tourism in China, Hipwell’s study of community- based ecotourism (CBET) in Taiwan (2007), Al-Oun and Al-Homoud’s study of CBT in 4 Jordan (2008), and Sebele’s study... “discussed without reference to sustainable development” (1997, p. 857). Due to the popularity of SD, the label of ST has been attached to various types of tourism concepts and products such as nature-based tourism, ecotourism, adventure tourism, and so on...

Vajirakachorn, Thanathorn

2012-10-19T23:59:59.000Z

257

A perturbation method for the analysis of vibrations and bifurcations associated with non-autonomous systems—I. Non-resonance case  

Science Journals Connector (OSTI)

A new perturbation technique, based on the intrinsic harmonic balancing and time sealing, is developed for the analysis of vibration and bifurcation problems associated with nonautonomous systems. The method combines selected features of the intrinsic harmonic-balancing technique (introduced earlier) and multiple-time-scaling in an effort to produce a more efficient procedure for non-linear analyses. Both non-resonance (part I) and resonance (part II) cases are treated from a unified point of view. The method is first described on one-degree-of-freedom systems, and then generalized to higher dimensional systems. The application of the technique to specific problems is illustrated on several examples. In particular, the problem of perturbed Hopf bifurcations arising in non-autonomous systems is analysed in general terms such that the results are applicable to all specific problems within the scope of the general formulation.

Koncay Huseuin; Rui Lin

1992-01-01T23:59:59.000Z

258

A computational analysis of the carbon-nanotube-based resonant-circuit sensors  

E-Print Network (OSTI)

A computational analysis of the carbon-nanotube-based resonant-circuit sensors M. Grujicica,* , G reduction in the resonant frequency of the resonant circuit-based chemical gas sensors. It is found of applications ranging from house gas and fire alarms to medical diagnostic applications and the control

Grujicic, Mica

259

The Importance of Cognitive Architectures: An Analysis Based on Cognitive Science Department  

E-Print Network (OSTI)

The Importance of Cognitive Architectures: An Analysis Based on CLARION Ron Sun Cognitive Science: http://www.cogsci.rpi.edu/rsun September 15, 2006 Abstract Research in computational cognitive modeling investigates the nature of cognition through developing process-based understanding by specifying computational

Varela, Carlos

260

FP-Rank: An Effective Ranking Approach Based on Frequent Pattern Analysis  

E-Print Network (OSTI)

FP-Rank: An Effective Ranking Approach Based on Frequent Pattern Analysis Yuanfeng Song, Kenneth. Ranking documents in terms of their relevance to a given query is fundamental to many real on developing efficient ranking models. While ranking mod- els are usually trained based on given training

Ng, Wilfred Siu Hung

Note: This page contains sample records for the topic "base case analysis" 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

Sensors and Actuators B 111112 (2005) 230241 Improvements in LED-based fluorescence analysis systems  

E-Print Network (OSTI)

Sensors and Actuators B 111­112 (2005) 230­241 Improvements in LED-based fluorescence analysis the stability, power output, and spectral flexibility of light emitting diode (LED)-based systems used to excite fluorescence or other forms of luminescence. LEDs are an attractive alternative to conventional white

Wilson, Denise

262

Asymptotic analysis of utility-based prices and hedging strategies for utilities defined on the  

E-Print Network (OSTI)

Asymptotic analysis of utility-based prices and hedging strategies for utilities defined 6th 2009 #12;Outline Optimal investment and utility-based pricing hedging Asymptotic expansions horizon T 3. preferences over terminal wealth described by a utility function U #12;Trading strategies

Sîrbu, Mihai

263

Formative Evaluation of IT-based Services: A Case Study of a Meal Planning Service  

Science Journals Connector (OSTI)

......families, based on the factors identified in the pre-test, influenced the future direction of the service development...on the level of a concept and, yet, in order to test its potential, the test situation needed to be rather complex. In these situations......

Johan Blomkvist; Johan Ĺberg; Stefan Holmlid

2014-11-01T23:59:59.000Z

264

A case against Kd-based transport models: natural attenuation at a mill tailings site  

Science Journals Connector (OSTI)

This study compares numerical modeling results of contaminant transport using a multi-component coupled reactive mass transport model and a distribution coefficient (Kd)-based transport model. The study site is a contaminated groundwater ... Keywords: contaminant, coupled processes, geochemical modeling, transport

Chen Zhu

2003-04-01T23:59:59.000Z

265

DOE'S ENERGY DATA BASE (EDB) VERSUS OTHER ENERGY-RELATED DATA BASES: A COMPARATIVE ANALYSIS  

E-Print Network (OSTI)

PLANTATIONS FIGURE 2 BIOGAS PROCESS TL'BIOGAS _ANAERQBICf o r Other Data Bases >BIOGAS/TI,DE,ID BIO(W)GAS/TI,DE,IDSEARCHES Methane (or Biogas) Production from Agricultural

Robinson, J.

2010-01-01T23:59:59.000Z

266

A Novel Sensor-Based Methodology for Learner's Motivation Analysis in Game-Based Learning  

Science Journals Connector (OSTI)

......AND FUTURE WORK As the education and gaming communities...sciencedirect.com/science/article/pii/S0278262611001370...International 2011-Posters' Extended Abstracts...Computer and Information Science-Stephanidis C...Intelligent Toys Based Education (2008) 124-131......

Ioana Ghergulescu; Cristina Hava Muntean

2014-07-01T23:59:59.000Z

267

Microsoft Word - Report on Prevention Analysis Trial Method and Case Study Improvments - April 2012.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1-23479 1-23479 Revision 1 Risk Informed Safety Margin Characterization Case Study: Selection of Electrical Equipment To Be Subjected to Environmental Qualification M3LW-12IN0702012 "Expansion of Trial Method and Case Study and Improvements" D. Blanchard (AREI) R. Youngblood (INL) April 2012 DISCLAIMER This information was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness, of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. References herein to any specific commercial product,

268

Suburban recreation subdivisions in Montgomery County, Texas - a case study analysis  

E-Print Network (OSTI)

degree of ':!ASTER OF SCIENCE Yiay 1969 Najor Subject: Recreation and Resource:; Development bjj CA&. - j1i?' ~, ' jc' Vc', 71 c. . ', i '. r~ e3 a: t ~ . ", ~. ": r, d c:onte~' & v: r'r ABSTRACT Suburban Recreation Subdivisions in Montgomery... affect subdivision development in Montgomery County, Texas, and through a case study, to examine some of the relationships among the factors concerning recreation facilities and population characteristics in a recrea- tion subdivision. Specific...

Watt, Carson Earl

2012-06-07T23:59:59.000Z

269

Semiclassical analysis for a Schrödinger operator with a U(2) artificial gauge: the periodic case  

E-Print Network (OSTI)

We consider a Schr\\"odinger operator with a Hermitian 2x2 matrix-valued potential which is lattice periodic and can be diagonalized smoothly on the whole $R^n.$ In the case of potential taking its minimum only on the lattice, we prove that the well-known semiclassical asymptotic of first band spectrum for a scalar potential remains valid for our model.

Abderemane Morame; Francoise Truc

2014-01-24T23:59:59.000Z

270

Synthesis of Enterprise and Value-Based Methods for Multiattribute Risk Analysis  

SciTech Connect

This paper describes a method for performing multiattribute decision analysis to prioritize ap-proaches to handling risks during the development and operation of complex socio-technical systems. The method combines risk categorization based on enterprise views, risk prioritization of the categories based on the Analytic Hierarchy Process (AHP), and more standard probability-consequence ratings schemes. We also apply value-based testing me-thods used in software development to prioritize risk-handling approaches. We describe a tool that synthesizes the methods and performs a multiattribute analysis of the technical and pro-grammatic risks on the Next Generation Nuclear Plant (NGNP) enterprise.

C. Robert Kenley; John W. Collins; John M. Beck; Harold J. Heydt; Chad B. Garcia

2001-10-01T23:59:59.000Z

271

A new algorithm for wavelet-based heart rate variability analysis  

E-Print Network (OSTI)

One of the most promising non-invasive markers of the activity of the autonomic nervous system is Heart Rate Variability (HRV). HRV analysis toolkits often provide spectral analysis techniques using the Fourier transform, which assumes that the heart rate series is stationary. To overcome this issue, the Short Time Fourier Transform is often used (STFT). However, the wavelet transform is thought to be a more suitable tool for analyzing non-stationary signals than the STFT. Given the lack of support for wavelet-based analysis in HRV toolkits, such analysis must be implemented by the researcher. This has made this technique underutilized. This paper presents a new algorithm to perform HRV power spectrum analysis based on the Maximal Overlap Discrete Wavelet Packet Transform (MODWPT). The algorithm calculates the power in any spectral band with a given tolerance for the band's boundaries. The MODWPT decomposition tree is pruned to avoid calculating unnecessary wavelet coefficients, thereby optimizing execution t...

García, Constantino A; Vila, Xosé; Márquez, David G

2014-01-01T23:59:59.000Z

272

Early growth technology analysis : case studies in solar energy and geothermal energy  

E-Print Network (OSTI)

Public and private organizations try to forecast the future of technological developments and allocate funds accordingly. Based on our interviews with experts from MIT's Entrepreneurship Center, Sloan School of Management, ...

Kaya Firat, Ayse

2010-01-01T23:59:59.000Z

273

Spatial GHG Inventory: Analysis of Uncertainty Sources. A Case Study for Ukraine  

Science Journals Connector (OSTI)

The Kyoto Protocol to the United Nations Framework Convention on Climate Change (UNFCCC) defines obligations for its parties to reduce their greenhouse gas (GHG) emissions compared with those of a base ... ) has ...

R. Bun; M. Gusti; L. Kujii; O. Tokar; Y. Tsybrivskyy…

2007-09-01T23:59:59.000Z

274

Financial Analysis of Incentive Mechanisms to Promote Energy Efficiency: Case Study of a Prototypical Southwest Utility  

E-Print Network (OSTI)

rate base assets, capital expenditure and O&M budgets) asA-5. Annual capital expenditure budget for prototypicalBusiness-as-usual Capital expenditure Combined cycle gas

Cappers, Peter

2009-01-01T23:59:59.000Z

275

Learning as a change agent in ERP enabled organisations - a case analysis  

Science Journals Connector (OSTI)

Although organisations implement enterprise resource planning (ERP) systems as part of their strategic management initiatives, most of them do not realise the expected level of business benefits. This could be understood better by studying the outcome-based ...

Rajendran Raju, Ranga Rajagopal

2014-10-01T23:59:59.000Z

276

Using GPS data in route choice analysis : case study in Boston  

E-Print Network (OSTI)

The pervasive location-based technologies, such as GPS and cell phone, help us find the pattern of geographical information of human behavior and also help dig opportunities in real world. In transportation field, they ...

Hou, Anyang

2010-01-01T23:59:59.000Z

277

Equilibrium Analysis of Packet Forwarding Strategies in Wireless Ad Hoc Networks the Static Case  

E-Print Network (OSTI)

.8 - Mobile and Wireless Communications, Venice, Italy, Sep 23-25, 2003. c Lecture Notes of Computer Science based on different energy classes. In this paper, we study the problem of cooperation for the most basic

Bencsáth, Boldizsár

278

Microsoft PowerPoint - Microbial Genome and Metagenome Analysis Case Study (NERSC Workshop - May 7-8, 2009).ppt [Compatibility  

NLE Websites -- All DOE Office Websites (Extended Search)

Genome & Genome & Metagenome Analysis: Computational Challenges Natalia N. Ivanova * Nikos C. Kyrpides * Victor M. Markowitz ** * Genome Biology Program, Joint Genome Institute ** Lawrence Berkeley National Lab Microbial genome & metagenome analysis General aims Understand microbial life Apply to agriculture, bioremediation, biofuels, human health Specific aims include Specific aims include Predict biochemistry & physiology of organisms based on genome sequence Explain known biochemical & physiological properties Metabolic reconstruction * Ivanova & Lykidis (2009) Metabolic reconstruction. Encyclopedia of Microbiology, Elsevier: 607-621. 2 Genome sequence data size Now ~1,400 microbial genomes = 5.5 mil genes ~ 100 metagenomes samples

279

A Transformation Approach for Modeling and Analysis of Complex UML Statecharts: A Case Study  

E-Print Network (OSTI)

transformation Petri nets model analysis 1.0 Introduction The Object Management Group (OMG) adopted a new. Entry transition. The basic form of the intermediate model for entry transitions of a composite state is a fork transition as shown in Fig. 1. A fork transition has one source state and multiple target states

Shatz, Sol M.

280

Sustaining Healthcare Through Waste Elimination: A Taxonomic Analysis with Case Illustrations  

Science Journals Connector (OSTI)

The growth in U.S. national health expenditures NHE has continuously outpaced its Gross Domestic Products GDP growth since 1997 and this trend will continue with a 2.1% annual gap for the next decade RAND, 2010. This nonstop healthcare cost increase ... Keywords: Cost Containment, Fraud, Health Information Technology HIT, Healthcare Costs, Healthcare Waste, Root Cause Analysis, Taxonomy

J. Michael Tarn; Bernard Han; Sharie L. Falan; Linda H. Zoeller; Donna M. Roach

2011-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Analysis of Catania Flash Flood Case Study by Using Combined Microwave and Infrared Technique  

Science Journals Connector (OSTI)

In this paper, the analysis of an extreme convective event atypical for the winter season, which occurred on 21 February 2013 on the east coast of Sicily and caused a flash flood over Catania, is presented. In just 1 h, more than 50 mm of ...

Francesco Di Paola; Elisabetta Ricciardelli; Domenico Cimini; Filomena Romano; Mariassunta Viggiano; Vincenzo Cuomo

2014-10-01T23:59:59.000Z

282

Strategic analysis of energy efficiency projects: Case study of a steel mill in Manitoba  

Science Journals Connector (OSTI)

Abstract An analysis of energy efficiency opportunities at a steel mill were undertaken using two energy modeling tools, the \\{RETScreen\\} Clean Energy Project Analysis Software (RETScreen) and the Process Heat Assessment and Survey Tool (PHAST). A number of energy efficiency opportunities were found to be feasible in this analysis at Gerdau North America Long Steel-Manitoba Mill. The waste heat recovery opportunities included: (1) preheating combustion air in the ladle preheater, with an estimated energy savings of 22,000 GJ/yr and a payback period of 10 months; and, (2) preheating billets with an estimated energy savings of 60,323 GJ/yr and a payback period of three years. Changing natural gas space heaters to more energy efficient and safer models was both socially and economically beneficial, although having a longer payback period of 4.5 years. Oxy-fuel combustion was not deemed feasible as oxygen costs negated any natural gas savings and the productivity gains were not considered applicable. The strategic analysis showed that environmental, economic and productivity benefits were larger than the smaller concerns of: production interruption, the economic barriers of capital costs, as well as the risks posed by a downturn in the economy or by outsourcing.

Shirley Thompson; Minxing Si

2014-01-01T23:59:59.000Z

283

Inventory logistics cost analysis model for the proposed EU intermodal loading unit -- A business case  

Science Journals Connector (OSTI)

This study focuses on the new initiative of the European Union (EU) which deals with simplifying the intermodal product shipment approach that may lead to improvement in the available transportation logistics infrastructure. The analysis involves determining ... Keywords: Intermodal loading unit, buffer stock, intermodal platforms, intermodal transportation, inventory in transit, logistics cost model, multimodal transportation

Sameer Kumar

2008-08-01T23:59:59.000Z

284

A QUALITATIVE CASE STUDY ANALYSIS OF THE CURRENT CONDITION OF NICHE MARKET, INDEPENDENT MOTION PICTURE PRODUCERS  

E-Print Network (OSTI)

their own motives, and how those motives in turn impact the decisions they make during a film production. By capturing the motives, decisions, and practices of independent producers we have a snap shot of what it is like to take part in contemporary... by examining their motives through common themes that emerge through a series of case study analyses. The analyses will help identify the motives and influential factors that may have an impact on the process of a motion picture’s production. This study...

Cole, Samuel Jason

2013-12-31T23:59:59.000Z

285

Fault tree synthesis for software design analysis of PLC based safety-critical systems  

SciTech Connect

As a software verification and validation should be performed for the development of PLC based safety-critical systems, a software safety analysis is also considered in line with entire software life cycle. In this paper, we propose a technique of software safety analysis in the design phase. Among various software hazard analysis techniques, fault tree analysis is most widely used for the safety analysis of nuclear power plant systems. Fault tree analysis also has the most intuitive notation and makes both qualitative and quantitative analyses possible. To analyze the design phase more effectively, we propose a technique of fault tree synthesis, along with a universal fault tree template for the architecture modules of nuclear software. Consequently, we can analyze the safety of software on the basis of fault tree synthesis. (authors)

Koo, S. R.; Cho, C. H. [Corporate R and D Inst., Doosan Heavy Industries and Construction Co., Ltd., 39-3, Seongbok-Dong, Yongin-Si, Gyeonggi-Do 449-795 (Korea, Republic of); Seong, P. H. [Dept. of Nuclear and Quantum Engineering, Korea Advanced Inst. of Science and Technology, 373-3 Guseong-dong, Yuseong-gu, Daejeon, 305-701 (Korea, Republic of)

2006-07-01T23:59:59.000Z

286

A framework for graph-based synthesis, analysis, and visualization of HPC cluster job data.  

SciTech Connect

The monitoring and system analysis of high performance computing (HPC) clusters is of increasing importance to the HPC community. Analysis of HPC job data can be used to characterize system usage and diagnose and examine failure modes and their effects. This analysis is not straightforward, however, due to the complex relationships that exist between jobs. These relationships are based on a number of factors, including shared compute nodes between jobs, proximity of jobs in time, etc. Graph-based techniques represent an approach that is particularly well suited to this problem, and provide an effective technique for discovering important relationships in job queuing and execution data. The efficacy of these techniques is rooted in the use of a semantic graph as a knowledge representation tool. In a semantic graph job data, represented in a combination of numerical and textual forms, can be flexibly processed into edges, with corresponding weights, expressing relationships between jobs, nodes, users, and other relevant entities. This graph-based representation permits formal manipulation by a number of analysis algorithms. This report presents a methodology and software implementation that leverages semantic graph-based techniques for the system-level monitoring and analysis of HPC clusters based on job queuing and execution data. Ontology development and graph synthesis is discussed with respect to the domain of HPC job data. The framework developed automates the synthesis of graphs from a database of job information. It also provides a front end, enabling visualization of the synthesized graphs. Additionally, an analysis engine is incorporated that provides performance analysis, graph-based clustering, and failure prediction capabilities for HPC systems.

Mayo, Jackson R.; Kegelmeyer, W. Philip, Jr.; Wong, Matthew H.; Pebay, Philippe Pierre; Gentile, Ann C.; Thompson, David C.; Roe, Diana C.; De Sapio, Vincent; Brandt, James M.

2010-08-01T23:59:59.000Z

287

Myths and Barriers to the Introduction of Safety Cases in Space-Based Systems Chris W. Johnson (1), Derek A. Robins (2)  

E-Print Network (OSTI)

safety culture. Other concerns stem from misunderstandings. For example, recent discussions aboutMyths and Barriers to the Introduction of Safety Cases in Space-Based Systems Chris W. Johnson (1) SAIC, Houston, Texas, USA. Abstract Safety cases provide high-level support for the development

Johnson, Chris

288

A comprehensive and critical re-analysis of FORS spectropolarimetric observations: the case of HD92207  

E-Print Network (OSTI)

Stellar spectropolarimetry has become extremely popular during the last decade, and has led to major advances in our understanding of stellar magnetic fields and of their impact on stellar structure and evolution. Many important discoveries have been obtained thanks to observations performed with the FORS low-resolution spectropolarimeters of the ESO Very Large Telescope. We first review and summarise the major results of a homogeneous re-reduction and analysis of all single-slit FORS1 spectropolarimetric observations. This work revealed a non-negligible dependence of the results upon the adopted reduction and analysis procedure, as well as the presence of instabilities, revealing that photon noise is not the only source of uncertainty. As a consequence of our new analysis and assessment of the uncertainties, we are not able to confirm a large number of magnetic field detections presented in the past for a variety of stars. We further summarise the results of FORS2 spectropolarimetric observations of the A0 s...

Fossati, L; Landstreet, J D; Kochukhov, O

2015-01-01T23:59:59.000Z

289

Retina Image Analysis and Ocular Telehealth: The Oak Ridge National Laboratory-Hamilton Eye Institute Case Study  

SciTech Connect

Automated retina image analysis has reached a high level of maturity in recent years, and thus the question of how validation is performed in these systems is beginning to grow in importance. One application of retina image analysis is in telemedicine, where an automated system could enable the automated detection of diabetic retinopathy and other eye diseases as a low-cost method for broad-based screening. In this work we discuss our experiences in developing a telemedical network for retina image analysis, including our progression from a manual diagnosis network to a more fully automated one. We pay special attention to how validations of our algorithm steps are performed, both using data from the telemedicine network and other public databases.

Karnowski, Thomas Paul [ORNL; Giancardo, Luca [ORNL; Li, Yaquin [University of Tennessee, Knoxville (UTK); Tobin Jr, Kenneth William [ORNL; Chaum, Edward [University of Tennessee, Knoxville (UTK)

2013-01-01T23:59:59.000Z

290

Energy efficiency and the economists: The case for a policy based on economic principles  

SciTech Connect

People interested in energy policy, whether in business, finance, government, or the environmental movement, should welcome and support an approach based on economic principles for three reasons. By solving the financing problem and encouraging innovation and cost-efficiency, the economic-efficiency approach will enable all countries to meet energy demands. By giving proper weight to the development and use of low-polluting technologies this approach will enable reduction of local and, over the long-term global pollution as energy demands grow. And in developing countries especially, an economic approach will enable the industry to play its part in raising living standards for the population at large. Given good policies, there is no reason at all why developing countries, like the industrial countries before them, should not enjoy the benefits of much higher levels of energy consumption than they do today.

Anderson, D. [The World Bank, Washington, DC (United States)

1995-11-01T23:59:59.000Z

291

A rough set-based corporate memory for the case of ecotourism  

Science Journals Connector (OSTI)

Abstract Corporate memory (CM) is a major asset of any modern organization and provides access to the strategic knowledge and experience making a company more competitive. Until now, CM has not been broadly applied to tourisms, where changes are rapid, both in the nature of eco-tourist behavior and impact on the environment. In order to develop sustainable ecotourism, agile decision-making based on rules induced from data is required. However, ecotourism often provides numerous qualitative data. The qualitative nature of the data makes it difficult to analyze using standard statistical techniques. The rough set approach is suitable for processing qualitative information. In this paper, the proposed CM is incorporated within the rough set in the tourism sector, to provide efficient knowledge management for resolving the problems: (1) to understand the purposes for traveling of tourists and their feedback, and (2) to improve a travel package for attracting valued eco-tourists and reducing environmental damage.

Chun-Che Huang; Wen-Yau Liang; Tzu-Liang (Bill) Tseng; Ruo-Yin Wong

2015-01-01T23:59:59.000Z

292

Profiling micro-enterprises: the case of home-based businesses in New Zealand  

Science Journals Connector (OSTI)

Micro-enterprises represent significant proportions of small firms in most economies yet they are not routinely profiled or studied. This paper examines business processes and activities of micro home-based businesses (HBB) from an empirical study of 522 firms in New Zealand. Key findings profile the microscopic scale of HBB and their flexibility in operating both at and away from home. The importance of sources of finance, marketing activities, relationships, and business indicators for HBB are evaluated. Aspirations for growth were very high, with HBB reporting personal factors as the most important resources for growth, followed by functional business activities and expertise. Furthermore, high levels of GST registration and international business activities indicate that many HBB are quite business savvy.

Delwyn N. Clark; Heather Douglas

2012-01-01T23:59:59.000Z

293

Energy-water analysis of the 10-year WECC transmission planning study cases.  

SciTech Connect

In 2011 the Department of Energy's Office of Electricity embarked on a comprehensive program to assist our Nation's three primary electric interconnections with long term transmission planning. Given the growing concern over water resources in the western U.S. the Western Electricity Coordinating Council (WECC) requested assistance with integrating water resource considerations into their broader electric transmission planning. The result is a project with three overarching objectives: (1) Develop an integrated Energy-Water Decision Support System (DSS) that will enable planners in the Western Interconnection to analyze the potential implications of water stress for transmission and resource planning. (2) Pursue the formulation and development of the Energy-Water DSS through a strongly collaborative process between the Western Electricity Coordinating Council (WECC), Western Governors Association (WGA), the Western States Water Council (WSWC) and their associated stakeholder teams. (3) Exercise the Energy-Water DSS to investigate water stress implications of the transmission planning scenarios put forward by WECC, WGA, and WSWC. The foundation for the Energy-Water DSS is Sandia National Laboratories Energy-Power-Water Simulation (EPWSim) model (Tidwell et al. 2009). The modeling framework targets the shared needs of energy and water producers, resource managers, regulators, and decision makers at the federal, state and local levels. This framework provides an interactive environment to explore trade-offs, and 'best' alternatives among a broad list of energy/water options and objectives. The decision support framework is formulated in a modular architecture, facilitating tailored analyses over different geographical regions and scales (e.g., state, county, watershed, interconnection). An interactive interface allows direct control of the model and access to real-time results displayed as charts, graphs and maps. The framework currently supports modules for calculating water withdrawal and consumption for current and planned electric power generation; projected water demand from competing use sectors; and, surface and groundwater availability. WECC's long range planning is organized according to two target planning horizons, a 10-year and a 20-year. This study supports WECC in the 10-year planning endeavor. In this case the water implications associated with four of WECC's alternative future study cases (described below) are calculated and reported. In future phases of planning we will work with WECC to craft study cases that aim to reduce the thermoelectric footprint of the interconnection and/or limit production in the most water stressed regions of the West.

Tidwell, Vincent Carroll; Passell, Howard David; Castillo, Cesar; Moreland, Barbara

2011-11-01T23:59:59.000Z

294

Profile Matching for the Analysis of Accelerants in Suspected Arson Cases  

Science Journals Connector (OSTI)

......Bertsch Department of Chemistry, The University of...applied to speed up combustion, but petroleum-based...commonly available as char coal lighter fluid. The...Interferences from the combustion of carpet. J. Forens...compounds produced during combustion of a polymer mixture......

P. Koussiafes; W. Bertsch

1993-04-01T23:59:59.000Z

295

Economic feasibility of carbon emission reduction in electricity generation, a case study based on Sri Lanka  

Science Journals Connector (OSTI)

The main purpose of this paper is an assessment of economic feasibility in reducing carbon dioxide emission of electricity generation in Sri Lanka. The paper shows that the present annual green house gas (GHG) emission with respect to electricity generation in Sri Lanka is about 2.8 million metric tons. The identified total GHG emission reduction potential in electricity generation is about 37 GW. The total reduction in GHG will be 16 million metric tons per year. Considering the savings on fossil fuel combustion, the total investment on CHG reduction methods would be recovered within a reasonable period as confirmed by a sensitivity analysis. To achieve these benefits, broad policies and guidelines are presented in-line with the country's environmental obligations. This is the first time that this type of scientific research study has been carried out in Sri Lanka to ascertain the current situation of GHG emission of electricity generation, to identify possible methods in reducing carbon dioxide emission and their economic feasibility. The methodology employed and the policies derived can be used as guides to similar types of research in other countries as well.

S.W.S.B. Dasanayaka; W. Jayarathne

2012-01-01T23:59:59.000Z

296

Appendix E: Other NEMS-MP results for the base case and scenarios.  

SciTech Connect

The NEMS-MP model generates numerous results for each run of a scenario. (This model is the integrated National Energy Modeling System [NEMS] version used for the Multi-Path Transportation Futures Study [MP].) This appendix examines additional findings beyond the primary results reported in the Multi-Path Transportation Futures Study: Vehicle Characterization and Scenario Analyses (Reference 1). These additional results are provided in order to help further illuminate some of the primary results. Specifically discussed in this appendix are: (1) Energy use results for light vehicles (LVs), including details about the underlying total vehicle miles traveled (VMT), the average vehicle fuel economy, and the volumes of the different fuels used; (2) Resource fuels and their use in the production of ethanol, hydrogen (H{sub 2}), and electricity; (3) Ethanol use in the scenarios (i.e., the ethanol consumption in E85 vs. other blends, the percent of travel by flex fuel vehicles on E85, etc.); (4) Relative availability of E85 and H2 stations; (5) Fuel prices; (6) Vehicle prices; and (7) Consumer savings. These results are discussed as follows: (1) The three scenarios (Mixed, (P)HEV & Ethanol, and H2 Success) when assuming vehicle prices developed through literature review; (2) The three scenarios with vehicle prices that incorporate the achievement of the U.S. Department of Energy (DOE) program vehicle cost goals; (3) The three scenarios with 'literature review' vehicle prices, plus vehicle subsidies; and (4) The three scenarios with 'program goals' vehicle prices, plus vehicle subsidies. The four versions or cases of each scenario are referred to as: Literature Review No Subsidies, Program Goals No Subsidies, Literature Review with Subsidies, and Program Goals with Subsidies. Two additional points must be made here. First, none of the results presented for LVs in this section include Class 2B trucks. Results for this class are included occasionally in Reference 1. They represent a small, though noticeable, segment of the 'LV plus 2B' market (e.g., a little more than 3% of today's energy use in that market). We generally do not include them in this discussion, simply because it requires additional effort to combine the NEMS-MP results for them with the results for the other LVs. (Where there is an exception, we will indicate so.) Second, where reference is made to E85, the ethanol content is actually 74%. The Energy Information Administration (EIA) assumes that, to address cold-starting issues, the percent of ethanol in E85 will vary seasonally. The EIA uses an annual average ethanol content of 74% in its forecasts. That assumption is maintained in the NEMS-MP scenario runs.

Plotkin, S. E.; Singh, M. K.; Energy Systems

2009-12-03T23:59:59.000Z

297

Is WTI crude oil market becoming weakly efficient over time?: New evidence from multiscale analysis based on detrended fluctuation analysis  

Science Journals Connector (OSTI)

This paper extends the work in Tabak and Cajueiro [Are the crude oil markets becoming weakly efficient over time, Energy Economics 29 (2007) 28–36] and Alvarez-Ramirez et al. [Short-term predictability of crude oil markets: a detrended fluctuation analysis approach, Energy Economics 30 (2008) 2645–2656]. In this paper, we test for the efficiency of WTI crude oil market through observing the dynamic of local Hurst exponents employing the method of rolling window based on multiscale detrended fluctuation analysis. Empirical results show that short-term, medium-term and long-term behaviors were generally turning into efficient behavior over time. However, in this way, the results also show that the market did not evolve along stable conditions for long times. Multiscale analysis is also implemented based on multifractal detrended fluctuation analysis. We found that the small fluctuations of WTI crude oil market were persistent; however, the large fluctuations had high instability, both in the short- and long-terms. Our discussion is also extended by incorporating arguments from the crude oil market structure for explaining the different correlation dynamics.

Yudong Wang; Li Liu

2010-01-01T23:59:59.000Z

298

DOE Hydrogen Analysis Repository: H2A Case Study: Future Central Natural  

NLE Websites -- All DOE Office Websites (Extended Search)

Natural Gas Reforming without Sequestration Natural Gas Reforming without Sequestration Project Summary Full Title: H2A Case Study: Longer-Term (2020-2030) Hydrogen from Natural Gas without CO2 Capture and Sequestration Project ID: 240 Principal Investigator: Darlene Steward Keywords: Hydrogen production; steam methane reforming; natural gas Purpose Steam reforming of hydrocarbons continues to be the most efficient, economical, and widely used process for production of hydrogen and hydrogen/carbon monoxide mixtures. The process involves a catalytic conversion of the hydrocarbon and steam to hydrogen and carbon oxides. Since the process works only with light hydrocarbons that can be vaporized completely without carbon formation, the feedstocks used range from methane (natural gas) to naphtha to No. 2 fuel oil.

299

Socioeconomics in supply chain management: a case study analysis of facility location decisions with GIS  

Science Journals Connector (OSTI)

Facility location decisions are considered the most critical part of the supply chain and are vital for efficient and effective flow of goods and materials. Engineers and planners continue to recognise the uncertainty regarding future conditions with facility location decisions and realise the fact that transportation decisions are often on short notice in response to facility changes. Environmental justice assessment has traditionally focused on identifying distributive effects to protected populations. No quantitative comparisons of supply chain facility location decisions on protected populations have been reported in the literature. The objective of this research is to develop a multi-objective framework for integrating the socioeconomic effects of facility location decisions on protected populations. Various socioeconomic factors are integrated with geographic information systems to determine the extent of impact of supply chain facility locations on protected populations. A case study is performed to examine the robustness of the developed methodology.

Coray Davis

2011-01-01T23:59:59.000Z

300

Monitoring Based Commissioning: Benchmarking Analysis of 24 UC/CSU/IOU  

NLE Websites -- All DOE Office Websites (Extended Search)

Monitoring Based Commissioning: Benchmarking Analysis of 24 UC/CSU/IOU Monitoring Based Commissioning: Benchmarking Analysis of 24 UC/CSU/IOU Projects Title Monitoring Based Commissioning: Benchmarking Analysis of 24 UC/CSU/IOU Projects Publication Type Report LBNL Report Number LBNL-1972E Year of Publication 2009 Authors Mills, Evan, and Paul A. Mathew Call Number LBNL-1972E Abstract HVAC systems that are designed without properly accounting for equipment load variation across laboratory spaces in a facility can significantly increase simultaneous heating and cooling, particularly for systems that use zone reheat for temperature control. This best practice guide describes the problem of simultaneous heating and cooling resulting from load variations, and presents several technological and design process strategies to minimize it.

Note: This page contains sample records for the topic "base case analysis" 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

Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs:  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Analysis of Customer Enrollment Patterns in TIme-Based Rate Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs: Initial Results from the SGIG Consumer Behavior Studies (July 2013) Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs: Initial Results from the SGIG Consumer Behavior Studies (July 2013) The U.S. Department of Energy is implementing the Smart Grid Investment Grant (SGIG) program under the American Recovery and Reinvestment Act of 2009 (Recovery Act). The SGIG program involves 99 projects that are deploying smart grid technologies, tools, and techniques for electric transmission, distribution, advanced metering, and customer systems. A subset of the 99 SGIG projects is conducting consumer behavior studies. These studies examine the response of residential and small commercial

302

A Statistics-Based Method For The Short-Wave Infrared Spectral Analysis Of  

Open Energy Info (EERE)

Statistics-Based Method For The Short-Wave Infrared Spectral Analysis Of Statistics-Based Method For The Short-Wave Infrared Spectral Analysis Of Altered Rocks- An Example From The Acoculco Caldera, Eastern Trans-Mexican Volcanic Belt Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Statistics-Based Method For The Short-Wave Infrared Spectral Analysis Of Altered Rocks- An Example From The Acoculco Caldera, Eastern Trans-Mexican Volcanic Belt Details Activities (0) Areas (0) Regions (0) Abstract: We propose a simple graphic and statistical method for processing short-wave infrared (SWIR) reflectivity spectra of alteration minerals, which classifies spectra according to their shape and absorption features, thus obtaining groups of spectra equivalent to mineral assemblages. It also permits selection of fewer samples for further mineralogical verification.

303

U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis | Open  

Open Energy Info (EERE)

Technical Potentials: A GIS-Based Analysis Technical Potentials: A GIS-Based Analysis Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis Abstract Renewable energy technical potential as defined in this report represents the achievable energy generation of a particular technology given system performance, topographic limitations, environmental, and land-use constraints. The primary benefit of assessing technical potential is that it establishes an upper-boundary estimate of development potential. Authors Anthony Lopez, Billy Roberts, Donna Heimiller, Nate Blair and Gian Porro Organization National Renewable Energy Laboratory Published National Renewable Energy Laboratory, 2012 Report Number NREL/TP-6A20-51946 DOI

304

An economic analysis of export sales and export shipments: the case for cotton  

E-Print Network (OSTI)

expectations are that domestic mill use will rise. This will be a result of consumers' preferences shifting towards natural fibers, improved technology for using cotton, a fashion trend toward heavyweight denim, and a decline in the cotton/polyester price.... In the present analysis, however, the significance observed for current, one-period- lag and the two-period-lag sales can be expanded. Sales contracted in the current period and in the previous period are important for the shipmenta in almost all quarters...

Ayuk, Elias Takor

1986-01-01T23:59:59.000Z

305

Standardized performance analysis (SPA) for the cow-calf enterprise: Paraguayan case study  

E-Print Network (OSTI)

in Texas and New Mexico in Tucumcari, New Mexico, This was a valuable experience because I was exposed to the entire analysis process, which was gathering data to fill the worksheets, inputting data into the sofbvare, analyzing the results and giving... kg 0 0 0 16a Alimento producido consumido por la unidad de cria Kg. por cab 0. 0 0. 0 0. 0 Valor de mercado Total de alimento producido 0 00 6b Alimento comprado consumido por la unidad de cria Fibra Balanceado o concentrado Minerales...

Nunez, Jorge Luis Rejis

1996-01-01T23:59:59.000Z

306

Lipid-Based Nanodiscs as Models for Studying Mesoscale Coalescence A Transport Limited Case  

SciTech Connect

Lipid-based nanodiscs (bicelles) are able to form in mixtures of long- and short-chain lipids. Initially, they are of uniform size but grow upon dilution. Previously, nanodisc growth kinetics have been studied using time-resolved small angle neutron scattering (SANS), a technique which is not well suited for probing their change in size immediately after dilution. To address this, we have used dynamic light scattering (DLS), a technique which permits the collection of useful data in a short span of time after dilution of the system. The DLS data indicate that the negatively charged lipids in nanodiscs play a significant role in disc stability and growth. Specifically, the charged lipids are most likely drawn out from the nanodiscs into solution, thereby reducing interparticle repulsion and enabling the discs to grow. We describe a population balance model, which takes into account Coulombic interactions and adequately predicts the initial growth of nanodiscs with a single parameter i.e., surface potential. The results presented here strongly support the notion that the disc coalescence rate strongly depends on nanoparticle charge density. The present system containing low-polydispersity lipid nanodiscs serves as a good model for understanding how charged discoidal micelles coalesce.

Hu, Andrew [University of Connecticut, Storrs; Fan, Tai-Hsi [University of Connecticut, Storrs; Katsaras, John [ORNL; Xia, Yan [University of Connecticut, Storrs; Li, Ming [University of Connecticut, Storrs; Nieh, Mu-Ping [University of Connecticut, Storrs

2014-01-01T23:59:59.000Z

307

Sustainable management in long-lived family businesses – a resource-based analysis of Northern German builder's providers  

Science Journals Connector (OSTI)

Since the UNCED (United Nations Conference on Environment and Development) in Rio de Janeiro in 1992, sustainable development is a socio-political goal all over the world and it becomes even more relevant with regard to the recent discussion on climate change and the financial crisis. According to family business research, sustainability – here defined as social, economic and ecologic long-term orientation – seems to overlap partly with the resources of long-lived family businesses. This case study research concentrates on the sustainable management of family owned builder's providers which are at least in the fourth generation. The resource-based analysis shows how these long-lived family businesses use their sustainable resources and capabilities to stay competitive. As a result, the sustainable management concept for family businesses will be presented.

Britta Boyd

2010-01-01T23:59:59.000Z

308

Station Blackout: A case study in the interaction of mechanistic and probabilistic safety analysis  

SciTech Connect

The ability to better characterize and quantify safety margins is important to improved decision making about nuclear power plant design, operation, and plant life extension. As research and development (R&D) in the light-water reactor (LWR) Sustainability (LWRS) Program and other collaborative efforts yield new data, sensors, and improved scientific understanding of physical processes that govern the aging and degradation of plant SSCs needs and opportunities to better optimize plant safety and performance will become known. The purpose of the Risk Informed Safety Margin Characterization (RISMC) Pathway R&D is to support plant decisions for risk-informed margin management with the aim to improve economics, reliability, and sustain safety of current NPPs. In this paper, we describe the RISMC analysis process illustrating how mechanistic and probabilistic approaches are combined in order to estimate a safety margin. We use the scenario of a “station blackout” wherein offsite power and onsite power is lost, thereby causing a challenge to plant safety systems. We describe the RISMC approach, illustrate the station blackout modeling, and contrast this with traditional risk analysis modeling for this type of accident scenario.

Curtis Smith; Diego Mandelli; Cristian Rabiti

2013-11-01T23:59:59.000Z

309

Framework for the Economic Analysis of Hybrid Systems Based on Exergy Consumption  

SciTech Connect

Starting from an overview of the dynamic behavior of the electricity market the need of the introduction of energy users that will provide a damping capability to the system is derived as also a qualitative analysis of the impact of uncertainty, both in the demand and supply side, is performed. Then it follows an introduction to the investment analysis methodologies based on the discounting of the cash flow, and then work concludes with the illustration and application of the exergonomic principles to provide a sound methodology for the cost accounting of the plant components to be used in the cash flow analysis.

Cristian Rabiti; Robert S. Cherry; Wesley R. Deason; Piyush Sabharwall; Shannon M. Bragg-Sitton; Richard D. Boardman

2014-08-01T23:59:59.000Z

310

Techno-economic analysis of coal gasification based co-production systems  

Science Journals Connector (OSTI)

Abstract Coal gasification based co-production systems are increasing popular in the world because they are assumed to be advantageous in energy efficiency and economic cost. However, there has been seldom researches on quantifying these advantages. In this paper, the co-prouction systems are analyzed from the technical and ecnomic point of views. During the study, the co-production system, of which the products are electricity and methanol, is modeled and simulated. For analysis, the energy analysis model and the economy analysis model are established. Results show that the co-production system has higher energy efficiency and less capital expenditure than tranditional single production systems.

Siyu Yang; Hengchong Li; Yu Qian

2012-01-01T23:59:59.000Z

311

Stability analysis and reactive power compensation issue in a microgrid with a DFIG based WECS  

Science Journals Connector (OSTI)

Abstract This paper presents a novel methodology for compensating reactive power in a microgrid, having a DFIG based wind–diesel system, to enhance the voltage stability of the hybrid system. UPFC as a FACTS device is proposed in order to improve the control of reactive power mismatch and the stability of the system. A small signal model of the wind–diesel system, DFIG based wind turbine system, UPFC and the controllers are designed for the stability analysis. Further, the voltage variation and reactive power compensation is analysed with the incorporation of proposed ANFIS based UPFC controller. Simulations are performed in MATLAB environment for transient stability analysis in a wind–diesel based microgrid with different wind power input and 2% step increase in load demand. Simulation results illustrate the efficiency and effectiveness of the proposed approach and its impact upon transient behaviour of the microgrid.

Asit Mohanty; Meera Viswavandya; Prakash K. Ray; Sandipan Patra

2014-01-01T23:59:59.000Z

312

System dynamics analysis of energy usage: case studies in automotive manufacturing  

Science Journals Connector (OSTI)

Our life is strongly linked with the usage of natural resources. With increase in world population and welfare there is an increasing global demand for raw material. Energy is a necessity in everyday life and is often generated using non-renewable natural resources which are finite. Manufacturing is one of the largest energy and material resource consumers. There is great concern about minimising consumption of energy in manufacturing industry to sustain the natural carrying capacity of the ecosystem. This is one of the challenges in today's industrial world. The paper presents the application of system dynamics theory for modelling and simulation of complex manufacturing processes. The simulations help to understand the intricate nature of the interrelation of process parameter and to make sound decision about minimising the energy losses. Two case studies are presented, one in cylinder head casting processes and the other in crankshaft machining. The developed models provide an insight into how to select critical operations and to identify the effect of various parameters on the energy consumption. Also, the models help to understand how changes of parameters over time affect the behaviour of energy changes. The outcome of this research enables the company to identify potential avenues to minimise energy usage and offers a decision support tool. [Received 3 June 2013; Revised 31 August 2013; Accepted 13 October 2013

Tigist Fetene Adane; Mihai Nicolescu

2014-01-01T23:59:59.000Z

313

Life cycle inventory for palm based plywood: A gate-to-gate case study  

Science Journals Connector (OSTI)

The oil palm industry heavily relies on the world market. It is essential to ensure that the oil palm industry is ready to meet the demands and expectation of these overseas customers on the environmental performance of the oil palm industry. Malaysia produces 13.9 million tons of oil palm biomass including oil palm trunk (OPT) frond and empty fruits bunches (EFB) annually. OPT felled in some oil palm plantations during replanting is transported to various industries and one such industry is the plywood factories. In order to gauge the environmental performance of the use of OPT as plywood a Life Cycle Assessment (LCA) study was conducted for palm based plywood. LCA is an important tool to assess the environmental performance of a product or process. Life cycle inventory (LCI) is the heart of a LCA study. This LCI study has a gate-to-gate system boundary and the functional unit is 1 m3 palm plywood produced and covers three types of plywood; Moisture Resistance Plywood (MR) Weather Boiling Proof Plywood Grade 1 (WBP Grade 1) at Factory D and Weather Boiling Proof Plywood Grade 2 (WBP Grade 2) at Factory E. Both factories use two different types of drying processes; conventional drying at Factory D and kiln drying at Factory E. This inventory data was collected from two factories (D and E) representing 40% of Malaysia palm plywood industry. The inputs are mainly the raw materials which are the oil palm trunks and tropical wood veneers and the energy from diesel and electricity from grid which is mainly used for the drying process. The other inputs include water urea formaldehyde phenol formaldehyde flour and melamine powder. The outputs are the biomass waste which consists of oil palm trunk off-cut and emission from boiler. Generally all types of plywood production use almost same materials and processing methods in different quantities. Due to the different process efficiency Factory D uses less input of raw materials and energy compared to Factory E.

Shamim Ahmad; Ismail Sahid; Vijaya Subramaniam; Halimah Muhamad; Anis Mokhtar

2013-01-01T23:59:59.000Z

314

Efficiency analysis of hydroelectric generating plants: A case study for Portugal  

Science Journals Connector (OSTI)

This paper estimates changes in total productivity, breaking this down into technically efficient change and technological change, by means of data envelopment analysis (DEA) applied to the hydroelectric energy generating plants of EDP — the Portugal Electricity Company. The aim of this procedure is to seek out those best practices that will lead to improved performance in the energy market. We rank the plants according to their change in total productivity for the period 2001–2004, concluding that some plants experienced productivity growth while others experienced a decrease in productivity. The implications arising from the study are that EDP should adopt an internal benchmark management procedure in order to evaluate the relative position of each hydroelectric generating plant and to adopt managerial strategies designed to catch up with the frontier of “best practices”. As the frontier is shifting along the time, constant efforts are needed in this respect along the time.

Carlos Pestana Barros

2008-01-01T23:59:59.000Z

315

The Business Case for SEP  

Energy.gov (U.S. Department of Energy (DOE))

Facilities pursue certification to Superior Energy Performance® (SEP™) to achieve an attractive return on investment while enhancing sustainability. The business case for SEP is based on detailed accounts from manufacturers that have implemented ISO 50001 and SEP. Gain an insider’s view from these pioneers. Read the cost-benefit analysis, case studies, and presentations. A variety of documents and media describe how companies found value through certification to ISO 50001 and SEP.

316

Can Artificial Neural Networks be Applied in Seismic Predicition? Preliminary Analysis Applying Radial Topology. Case: Mexico  

E-Print Network (OSTI)

Tectonic earthquakes of high magnitude can cause considerable losses in terms of human lives, economic and infrastructure, among others. According to an evaluation published by the U.S. Geological Survey, 30 is the number of earthquakes which have greatly impacted Mexico from the end of the XIX century to this one. Based upon data from the National Seismological Service, on the period between January 1, 2006 and May 1, 2013 there have occurred 5,826 earthquakes which magnitude has been greater than 4.0 degrees on the Richter magnitude scale (25.54% of the total of earthquakes registered on the national territory), being the Pacific Plate and the Cocos Plate the most important ones. This document describes the development of an Artificial Neural Network (ANN) based on the radial topology which seeks to generate a prediction with an error margin lower than 20% which can inform about the probability of a future earthquake one of the main questions is: can artificial neural networks be applied in seismic forecast...

Mota-Hernandez, Cinthya; Alvarado-Corona, Rafael

2014-01-01T23:59:59.000Z

317

2007 Wholesale Power Rate Case Final Proposal : Risk Analysis Study Documentation.  

SciTech Connect

The RiskMod Model is comprised of a set of risk simulation models, collectively referred to as RiskSim; a set of computer programs that manages data referred to as Data Management Procedures; and RevSim, a model that calculates net revenues. RiskMod interacts with the AURORA Model, the RAM2007, and the ToolKit Model during the process of performing the Risk Analysis Study. AURORA is the computer model being used to perform the Market Price Forecast Study (see Market Price Forecast Study, WP-07-FS-BPA-03); the RAM2007 is the computer model being used to calculate rates (see Wholesale Power Rate Development Study, WP-07-FS-BPA-05); and the ToolKit is the computer model being used to develop the risk mitigation package that achieves BPA's 92.6 percent TPP standard (see Section 3 in the Risk Analysis Study, WP-07-FS-BPA-04). Variations in monthly loads, resources, natural gas prices, forward market electricity prices, transmission expenses, and aluminum smelter benefit payments are simulated in RiskSim. Monthly spot market electricity prices for the simulated loads, resources, and natural gas prices are estimated by the AURORA Model. Data Management Procedures facilitate the format and movement of data that flow to and/or from RiskSim, AURORA, and RevSim. RevSim estimates net revenues using risk data from RiskSim, spot market electricity prices from AURORA, loads and resources data from the Load Resource Study, WP-07-FS-BPA-01, various revenues from the Revenue Forecast component of the Wholesale Power Rate Development Study, WP-07-FSBPA-05, and rates and expenses from the RAM2007. Annual average surplus energy revenues, purchased power expenses, and section 4(h)(10)(C) credits calculated by RevSim are used in the Revenue Forecast and the RAM2007. Heavy Load Hour (HLH) and Light Load Hour (LLH) surplus and deficit energy values from RevSim are used in the Transmission Expense Risk Model. Net revenues estimated for each simulation by RevSim are input into the ToolKit Model to develop the risk mitigation package that achieves BPA's 92.6 percent TPP standard. The processes and interaction between each of the models and studies are depicted in Graph 1.

United States. Bonneville Power Administration.

2006-07-01T23:59:59.000Z

318

2007 Wholesale Power Rate Case Initial Proposal : Risk Analysis Study Documentation.  

SciTech Connect

The RiskMod Model is comprised of a set of risk simulation models, collectively referred to as RiskSim; a set of computer programs that manages data referred to as Data Management Procedures; and RevSim, a model that calculates net revenues. RiskMod interacts with the AURORA Model, the RAM2007, and the ToolKit Model during the process of performing the Risk Analysis Study. AURORA is the computer model being used to perform the Market Price Forecast Study (see Market Price Forecast Study, WP-07-E-BPA-03); the RAM2007 is the computer model being used to calculate rates (see Wholesale Power Rate Development Study, WP-07-E-BPA-05); and the ToolKit is the computer model being used to develop the risk mitigation package that achieves BPA's 92.6 percent TPP standard (see Section 3 in the Risk Analysis Study, WP-07-E-BPA-04). Variations in monthly loads, resources, natural gas prices, forward market electricity prices, transmission expenses, and aluminum smelter benefit payments are simulated in RiskSim. Monthly spot market electricity prices for the simulated loads, resources, and natural gas prices are estimated by the AURORA Model. Data Management Procedures facilitate the format and movement of data that flow to and/or from RiskSim, AURORA, and RevSim. RevSim estimates net revenues using risk data from RiskSim, spot market electricity prices from AURORA, loads and resources data from the Load Resource Study, WP-07-E-BPA-01, various revenues from the Revenue Forecast component of the Wholesale Power Rate Development Study, WP-07-E-BPA-05, and rates and expenses from the RAM2007. Annual average surplus energy revenues, purchased power expenses, and section 4(h)(10)(C) credits calculated by RevSim are used in the Revenue Forecast and the RAM2007. Heavy Load Hour (HLH) and Light Load Hour (LLH) surplus and deficit energy values from RevSim are used in the Transmission Expense Risk Model. Net revenues estimated for each simulation by RevSim are input into the ToolKit Model to develop the risk mitigation package that achieves BPA's 92.6 percent TPP standard. The processes and interaction between each of the models and studies are depicted in Graph 1.

United States. Bonneville Power Administration.

2005-11-01T23:59:59.000Z

319

Strategy analysis for the development of a green energy industry: a Taipei case study  

Science Journals Connector (OSTI)

Abstract Taipei, a modern, subtropical, medium-sized city, is distinguished by its high population density, scarce land, and heavy traffic flow. There are also abundant green energy resources in Taipei, which, if fully developed, could generate 13,040 GWh of electricity per year, resulting in a total of 9.37 million tons of carbon dioxide emissions abatement. The development of the green energy industry in this city cannot only bring significant energy-saving and carbon-reducing benefits but also could create significant derivative business opportunities; for example, the total output values of the solar PV and electric vehicle industries could be as high as 700 billion yuan. In this study, we use a SWOT (Strengths, Weaknesses, Opportunities, and Threats) analysis and conclude that the top priorities for Taipei's green energy industry development are building energy conservation and electrified transportation, specifically electric vehicles, LED (Light-Emitting Diode) lighting, inverter air conditioning, and \\{ESCOs\\} (Energy Service Company). Taipei is a domestic and international hub for politics, transportation, technology, commerce, and finance. Taipei is very likely to become an internationalized green energy industrial hub, achieving the 3E goals of economic prosperousness, environmental protection, and energy security.

Shyi-Min Lu; Ching Lu

2013-01-01T23:59:59.000Z

320

NONLINEAR ANALYSIS OF RUBBER-BASED POLYMERIC MATERIALS WITH THERMAL RELAXATION MODELS  

E-Print Network (OSTI)

NONLINEAR ANALYSIS OF RUBBER-BASED POLYMERIC MATERIALS WITH THERMAL RELAXATION MODELS R. V. N of the material and their close connection with the effect of thermal relaxation time can be best appreciated (phonons). A relaxation time appears naturally as the characteristic of thermal resistance in the solid

Melnik, Roderick

Note: This page contains sample records for the topic "base case analysis" 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.


321

Towards QoS Prediction Based on Composition Structure Analysis and Probabilistic Environment Models  

E-Print Network (OSTI)

Towards QoS Prediction Based on Composition Structure Analysis and Probabilistic Environment Models Dragan Ivanovi´c Universidad Polit´ecnica de Madrid idragan@clip.dia.fi.upm.es Peerachai Kaowichakorn Universidad Polit´ecnica de Madrid p.kaowichakorn@gmail.com Manuel Carro Universidad Polit´ecnica de Madrid

Politécnica de Madrid, Universidad

322

Proper Orthogonal Decomposition-Based Modeling, Analysis, and Simulation of Dynamic Wind Load  

E-Print Network (OSTI)

Proper Orthogonal Decomposition-Based Modeling, Analysis, and Simulation of Dynamic Wind Load.1061/ ASCE 0733-9399 2005 131:4 325 CE Database subject headings: Simulation; Wind loads; Buildings; Random on the decomposition of the covariance and XPSD matrices is presented. A physically meaningful linkage between the wind

Chen, Xinzhong

323

Combining Discriminant Analysis and Neural Networks for Fraud Detection on the Base of  

E-Print Network (OSTI)

Combining Discriminant Analysis and Neural Networks for Fraud Detection on the Base of Complex suspicious, unknown event patterns in the field of fraud detection by using a combi- nation of discriminant of finding unknown fraud patterns, several statistical meth- ods are discussed. On this background, first

Tucci, Sara

324

A phylogenetic analysis of the emberizid sparrows based on three mitochondrial genes  

E-Print Network (OSTI)

A phylogenetic analysis of the emberizid sparrows based on three mitochondrial genes Rebecca J phylogenetic studies have examined the taxonomic relationships among a number of typical emberizid sparrow The phylogenetic relationships within the family Emberizidae have presented avian systematists with a taxonomic

Spicer, Greg S.

325

Enabling access-privacy for random walk based data analysis applications q  

E-Print Network (OSTI)

of the future states depend only on the present. A Markov chain is a discrete-time stochastic process which. In this paper, we focus on access-privacy enabled outsourced Markov chain based data analysis applications This submission is an extended version of Ping Lin, K. Selc¸uk Candan: Access-private outsourcing of Markov chain

Candan, Selçuk

326

Analysis of measures to enhance safeguards, and proliferation resistance in thorium based fuel fabrication plants  

Science Journals Connector (OSTI)

Abstract The presence of high energy gamma rays emitted by U232, which is always associated in ppm quantities with reprocessed U233, lends robustness or physical protection to the thorium fuel cycle. India is currently setting up a thorium based fuel cycle for its Advanced Heavy Water Reactor (AHWR). Identification and deployment of suitable extrinsic measures for fuel fabrication facilities would help in strengthening overall proliferation resistance. The extrinsic measures proposed in this paper include several measures which have been identified for the first time. A quantitative assessment of the contribution of these measures to overall safeguardability of the fuel fabrication plant has been carried out. Multi Attribute Utility Analysis (MAUA) has been used to evaluate the Proliferation Resistance (PR) value for two hypothetical facilities, one employing none of these measures and the other employing some or all of these measures. The analysis is based on the expert opinion of designers, operators, quality control managers and implementers of safeguards in fuel cycle facilities. Sensitivity analysis for all the proposed measures has also been carried out to study the effect of the influence of individual measures on the overall proliferation resistance of the fuel fabrication plant. The analysis ranks various safeguards measures based on the importance factor of a measure which is defined as the ratio of overall proliferation resistance with and without the measure. Important measures identified based on ranking are near real time monitoring, automation, safeguards-by-design, dynamic nuclear material accounting, and plant imaging.

Suresh Gangotra; R.B. Grover; K.L. Ramakumar

2014-01-01T23:59:59.000Z

327

An Automated Failure Modes and Effect Analysis Based Visual Matrix Approach to Sensor Selection and  

E-Print Network (OSTI)

- prehensive automated Failure Modes and Effects Analysis (FMEA) using qualitative model based reasoning techniques. The automated FMEA pro- vides a comprehensive set of fault­effect rela- tions by qualitative FMEA results in a fault-effect mapping that can be used to investi- gate the diagnosability

Snooke, Neal

328

Model-based Failure Modes and Effects Analysis of Neal Snooke 1  

E-Print Network (OSTI)

embedded software developers who are already familiar with the benefits of FMEA analysis. Several au- thors discuss experiences of performing manual FMEA of software however there has been no attempt at automating of software and the success of model based automated FMEA for hardware. 1 Introduction The notion of Software

Snooke, Neal

329

On a tensor-based finite element model for the analysis of shell structures  

E-Print Network (OSTI)

In the present study, we propose a computational model for the linear and nonlinear analysis of shell structures. We consider a tensor-based finite element formulation which describes the mathematical shell model in a natural and simple way by using...

Arciniega Aleman, Roman Augusto

2006-04-12T23:59:59.000Z

330

AN APPROACH FOR INTERSUBJECT ANALYSIS OF 3D BRAIN IMAGES BASED ON CONFORMAL GEOMETRY  

E-Print Network (OSTI)

AN APPROACH FOR INTERSUBJECT ANALYSIS OF 3D BRAIN IMAGES BASED ON CONFORMAL GEOMETRY Guangyu Zou Emission Tomography (PET) and Diffusion Tensor Imaging (DTI) have accelerated brain research in many aspects. In order to better understand the synergy of the many processes involved in normal brain function

Hua, Jing

331

Model-based Biomarker Detection and Systematic Analysis in Translational Science  

E-Print Network (OSTI)

and guidance, endless love and support. vii TABLE OF CONTENTS CHAPTER Page I INTRODUCTION : : : : : : : : : : : : : : : : : : : : : : : : : : 1 A. MS-based proteomics . . . . . . . . . . . . . . . . . . . . . 2 1. Feature extraction in MS data analysis... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1. Spectrum preprocessing and obtaining peptide candidates 13 2. Modeling the mass spectrum . . . . . . . . . . . . . . 14 3. Bayesian peptide detection . . . . . . . . . . . . . . . 16 a. Sampling the peak height vector . . . . . . . . . . 17...

Sun, Youting

2012-07-16T23:59:59.000Z

332

Policy Design and Performance of Emissions Trading Markets: An Adaptive Agent-Based Analysis  

Science Journals Connector (OSTI)

Policy Design and Performance of Emissions Trading Markets: An Adaptive Agent-Based Analysis ... Emissions trading is considered to be a cost-effective environmental economic instrument for pollution control. ... However, the pilot emissions trading programs in China have failed to bring remarkable success in the campaign for pollution control. ...

Zhang Bing; Yu Qinqin; Bi Jun

2010-06-30T23:59:59.000Z

333

Decision Support Modeling and analysis of an auction-based logistics market  

E-Print Network (OSTI)

Decision Support Modeling and analysis of an auction-based logistics market Semra Agrali a , BarisĂ? a logistics spot market where the transportation orders from a number of firms are matched with two types that have lower costs. In order to analyze the effects of implementing a logistics spot market

Karaesmen, Fikri

334

Pitch angle distribution analysis of radiation belt electrons based on Combined Release and Radiation Effects Satellite  

E-Print Network (OSTI)

Pitch angle distribution analysis of radiation belt electrons based on Combined Release of pitch angle distributions (PADs) of energetic electrons is performed. The distributions are classified a is the local pitch angle, a profile of the parameter n versus L-shell is produced for local times corresponding

Li, Xinlin

335

Current-based 4D shape analysis for the mechanical personalization of heart models  

E-Print Network (OSTI)

Current-based 4D shape analysis for the mechanical personalization of heart models Lo¨ic Le Folgoc1. Abstract. Patient-specific models of the heart may lead to better understanding of cardiovascular diseases-mechanical model of the heart, from the kinematics of the endo- and epicardium, is presented in this paper. We use

Paris-Sud XI, Université de

336

Adoption of energy-efficiency measures in SMEs An empirical analysis based on energy audit data  

E-Print Network (OSTI)

Adoption of energy-efficiency measures in SMEs ­ An empirical analysis based on energy audit data;Abstract This paper empiricallyinvestigates the factors driving the adoption of energy-efficiency measures bysubjective and objective proxies, appear to impede the adoption of energy-efficient measures, even

Boyer, Edmond

337

European Wind Energy Conference 2007 Milan Measurement based analysis of active and reactive power  

E-Print Network (OSTI)

European Wind Energy Conference 2007 ­ Milan 1 Measurement based analysis of active and reactive to the network through distribution systems. Because the production units, the distribution systems units will cover consumption in the vicinity. This can contribute to the reduction of the system losses

338

Performance Analysis of an EEMD-based Hilbert Huang Transform as a Bearing Failure Detector  

E-Print Network (OSTI)

challenging as far as wind energy conversion system are deployed onshore or offshore wherePerformance Analysis of an EEMD-based Hilbert Huang Transform as a Bearing Failure Detector in Wind, Brest, France Sylvie.Turri@univ-brest.fr Abstract--Sustainability and viability of wind farms are highly

Brest, Université de

339

Integrated Analysis for the Design of Reusable TPS based on Variable Transpiration Cooling for Hypersonic Cruise  

E-Print Network (OSTI)

with the high dynamic pressure flight trajectories, generates surface temperatures for which the strength1 Integrated Analysis for the Design of Reusable TPS based on Variable Transpiration Cooling of hypersonic air-breathing vehicles presents formidable challenges. Reusable thermal protection systems (TPS

Texas at Arlington, University of

340

3D-mesh models: view-based indexing and structural analysis  

E-Print Network (OSTI)

3D-mesh models: view-based indexing and structural analysis Mohamed Daoudi, Tarik Filali Ansary.daoudi@lifl.fr, tarik.filali@lifl.fr, julien.tierny@lifl.fr, jean-philippe.vandeborre@lifl.fr Abstract. 3D-mesh models applications, medical or military simulations, video games and so on. Indexing and analyzing these 3D data

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "base case analysis" 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

MONO-TEMPORAL GIS UPDATE ASSISTANCE SYSTEM BASED ON UNSUPERVISED COHERENCE ANALYSIS AND EVOLUTIONARY OPTIMISATION  

E-Print Network (OSTI)

MONO-TEMPORAL GIS UPDATE ASSISTANCE SYSTEM BASED ON UNSUPERVISED COHERENCE ANALYSIS-automation ABSTRACT: Data in Geo Information Systems (GIS) is used for map services and various applications. Thus-automatically analyse up-to-date satellite image data to narrow down areas that have to be considered for GIS updates

342

Simulator Generation Using an Automaton Based Pipeline Model for Timing Analysis  

E-Print Network (OSTI)

Simulator Generation Using an Automaton Based Pipeline Model for Timing Analysis Rola Kassem, Mika the description of the pipeline. The description is transformed into an automaton and a set of resources which. The blocks communicate and synchronise with each other in order to handle the pipeline hazards. A pipeline

Paris-Sud XI, Université de

343

Analysis of single-molecule FRET trajectories of transcription complexes based on Hidden-Markov Modelling  

E-Print Network (OSTI)

Analysis of single-molecule FRET trajectories of transcription complexes based on Hidden of transcription and direct probing of intermediates has become possible thanks to single-molecule methods. In contrast to ensemble methods that report on the mean properties of large populations, single-molecule

Goldschmidt, Christina

344

Thermodynamic-Analysis-Based Energy Consumption Minimization for Natural Gas Liquefaction  

Science Journals Connector (OSTI)

The earliest NG liquefaction plants consisted of fairly simple processes based on either cascaded refrigeration or single mixed-refrigerant (MR) processes with train capacities of less than 1 million tons per annum (MTPA). ... Kano?lu, M.Exergy analysis of multistage cascade refrigeration cycle used for natural gas liquefaction Int. ...

Meiqian Wang; Jian Zhang; Qiang Xu; Kuyen Li

2011-09-25T23:59:59.000Z

345

Near-Infrared Detection of Flow Injection Analysis by Acoustooptic Tunable Filter-Based  

E-Print Network (OSTI)

Near-Infrared Detection of Flow Injection Analysis by Acoustooptic Tunable Filter University, P.O. Box 1881, Milwaukee, Wisconsin 53201-1881 The instrumentation development of a near-infrared organic compounds absorb light in the near-infrared region, this AOTF-based near-IR detector can serve

Reid, Scott A.

346

STAMP-Based Analysis of a Refinery Overflow Accident Nancy Leveson, Margaret Stringfellow, and John Thomas  

E-Print Network (OSTI)

1 STAMP-Based Analysis of a Refinery Overflow Accident Nancy Leveson, Margaret Stringfellow, and John Thomas As an example of STAMP, we have taken an accident report produced for a real refinery failures and operator actions (or missing actions) related to the loss. But stopping after identifying

Leveson, Nancy

347

Bayes Linear Uncertainty Analysis for Oil Reservoirs Based on Multiscale Computer Experiments  

E-Print Network (OSTI)

Bayes Linear Uncertainty Analysis for Oil Reservoirs Based on Multiscale Computer Experiments, 2008 1 Introduction Reservoir simulators are important and widely-used tools for oil reservoir for reservoirs, where the model inputs are physical parameters, such as the permeability and porosity of various

Oakley, Jeremy

348

A Wavelet Theory -Based Adaptive Trend Analysis System for Process Monitoring and Diagnosis  

E-Print Network (OSTI)

A Wavelet Theory - Based Adaptive Trend Analysis System for Process Monitoring and Diagnosis Hiranmayee Vedam Venkat Venkatasubramanian* Laboratory for Intelligent Process Systems School of Chemical-ASTRA performs process monitoring and diagnosis. The main contributions of this paper are two fold. A wavelet

Venkatasubramanian, Venkat

349

Regression Models for Demand Reduction based on Cluster Analysis of Load  

NLE Websites -- All DOE Office Websites (Extended Search)

Regression Models for Demand Reduction based on Cluster Analysis of Load Regression Models for Demand Reduction based on Cluster Analysis of Load Profiles Speaker(s): Nobuyuki Yamaguchi Date: March 26, 2009 - 12:00pm Location: 90-3122 This seminar provides new regression models for demand reduction of Demand Response programs for the purpose of ex ante evaluation of the programs and screening for recruiting customer enrollment into the programs. The proposed regression models employ load sensitivity to outside air temperature and representative load pattern derived from cluster analysis of customer baseline load as explanatory variables. We examined the performance of the proposed models with respect to the validity of explanatory variables and fitness of regressions, using actual load profile data of Pacific Gas and Electric Company's commercial and industrial

350

Long Term World Oil Supply (A Resource Base/Production Path Analysis)  

Gasoline and Diesel Fuel Update (EIA)

Long Term World Oil Supply Long Term World Oil Supply (A Resource Base/Production Path Analysis) 07/28/2000 Click here to start Table of Contents Long Term World Oil Supply (A Resource Base/Production Path Analysis) Executive Summary Executive Summary (Continued) Executive Summary (Continued) Overview The Year of Peak Production..When will worldwide conventional oil production peak?... Lower 48 Crude Oil Reserves & Production 1945-2000 Texas Oil and Condensate Production, and Texas First Purchase Price (FPP), 1980-1999 Published Estimates of World Oil Ultimate Recovery Different Interpretations of a Hypothetical 6,000 Billion Barrel World Original Oil-in-Place Resource Base Campbell-Laherrère World Oil Production Estimates, 1930-2050 Laherrere’s Oil Production Forecast, 1930-2150

351

Newspaper coverage of suicide and initiation of suicide clusters in teenagers in the USA, 1988–96: a retrospective, population-based, case-control study  

Science Journals Connector (OSTI)

SummaryBackground Public health and clinical efforts to prevent suicide clusters are seriously hampered by the unanswered question of why such outbreaks occur. We aimed to establish whether an environmental factor—newspaper reports of suicide—has a role in the emergence of suicide clusters. Methods In this retrospective, population-based, case-control study, we identified suicide clusters in young people aged 13–20 years in the USA from 1988 to 1996 (preceding the advent of social media) using the time–space Scan statistic. For each cluster community, we selected two matched non-cluster control communities in which suicides of similarly aged youth occurred, from non-contiguous counties within the same state as the cluster. We examined newspapers within each cluster community for stories about suicide published in the days between the first and second suicides in the cluster. In non-cluster communities, we examined a matched length of time after the matched control suicide. We used a content-analysis procedure to code the characteristics of each story and compared newspaper stories about suicide published in case and control communities with mixed-effect regression analyses. Findings We identified 53 suicide clusters, of which 48 were included in the media review. For one cluster we could identify only one appropriate control; therefore, 95 matched control communities were included. The mean number of news stories about suicidal individuals published after an index cluster suicide (7·42 [SD 10·02]) was significantly greater than the mean number of suicide stories published after a non-cluster suicide (5·14 [6.00]; pnewspaper reports about suicide (including specific story characteristics) and the initiation of teenage suicide clusters should provide an empirical basis to support efforts by mental health professionals, community officials, and the media to work together to identify and prevent the onset of suicide clusters. Funding US National Institute of Mental Health and American Foundation for Suicide Prevention.

Madelyn S Gould; Marjorie H Kleinman; Alison M Lake; Judith Forman; Jennifer Bassett Midle

2014-01-01T23:59:59.000Z

352

Security Analysis of Selected AMI Failure Scenarios Using Agent Based Game Theoretic Simulation  

SciTech Connect

Information security analysis can be performed using game theory implemented in dynamic Agent Based Game Theoretic (ABGT) simulations. Such simulations can be verified with the results from game theory analysis and further used to explore larger scale, real world scenarios involving multiple attackers, defenders, and information assets. We concentrated our analysis on the Advanced Metering Infrastructure (AMI) functional domain which the National Electric Sector Cyber security Organization Resource (NESCOR) working group has currently documented 29 failure scenarios. The strategy for the game was developed by analyzing five electric sector representative failure scenarios contained in the AMI functional domain. From these five selected scenarios, we characterize them into three specific threat categories affecting confidentiality, integrity and availability (CIA). The analysis using our ABGT simulation demonstrates how to model the AMI functional domain using a set of rationalized game theoretic rules decomposed from the failure scenarios in terms of how those scenarios might impact the AMI network with respect to CIA.

Abercrombie, Robert K [ORNL] [ORNL; Schlicher, Bob G [ORNL] [ORNL; Sheldon, Frederick T [ORNL] [ORNL

2014-01-01T23:59:59.000Z

353

Case Based Dental Radiology  

Science Journals Connector (OSTI)

Dental radiology is quickly becoming integral to the standard of care in veterinary dentistry. This is not only because it is critical for proper patient care, but also because client expectations have increased. Furthermore, providing dental radiographs as a routine service can create significant practice income. This article details numerous conditions that are indications for dental radiographs. As you will see, dental radiographs are often critical for proper diagnosis and treatment. These conditions should not be viewed as unusual; they are present within all of our practices. When you choose not to radiograph these teeth, you leave behind painful pathology. Utilizing the knowledge gained from dental radiographs will both improve patient care and increase acceptance of treatment recommendations. Consequently, this leads to increased numbers of dental procedures performed at your practice.

Brook A. Niemiec

2009-01-01T23:59:59.000Z

354

Epigastric Hernia in Pregnancy: A Management Plan Based on a Systematic Review of Literature and a Case History  

Science Journals Connector (OSTI)

Symptomatic epigastric hernia is rare in pregnant women. A case history, management of which prompted a systematic review of the literature and proposed plan for treatment of such cases, is hereby ... hernias in ...

Samuel A. Debrah; Amalachukwu M. Okpala

2013-06-01T23:59:59.000Z

355

Furnace and Heat Recovery Area Design and Analysis for Conceptual Design of Oxygen-Based PC Boiler  

SciTech Connect

The objective of the furnace and heat recovery area design and analysis task of the Conceptual Design of Oxygen-Based PC Boiler study is to optimize the location and design of the furnace, burners, over-fire gas ports, and internal radiant surfaces. The furnace and heat recovery area were designed and analyzed using the FW-FIRE and HEATEX computer programs. The furnace is designed with opposed wall-firing burners and over-fire air ports. Water is circulated in the furnace by natural circulation to the waterwalls and divisional wall panels. Compared to the air-fired furnace, the oxygen-fired furnace requires only 65% of the surface area and 45% of the volume. Two oxygen-fired designs were simulated: (1) without over-fire air and (2) with 20% over-fire air. The maximum wall heat flux in the oxygen-fired furnace is more than double that of the air-fired furnace due to the higher flame temperature and higher H{sub 2}O and CO{sub 2} concentrations. The coal burnout for the oxygen-fired case is 100% due to a 500 F higher furnace temperature and higher concentration of O{sub 2}. Because of the higher furnace wall temperature of the oxygen-fired case compared to the air-fired case, furnace water wall material was upgraded from carbon steel to T91. The total heat transfer surface required in the oxygen-fired heat recovery area (HRA) is 25% less than the air-fired HRA due to more heat being absorbed in the oxygen-fired furnace and the greater molecular weight of the oxygen-fired flue gas. The HRA tube materials and wall thickness are practically the same for the air-fired and oxygen-fired design since the flue gas and water/steam temperature profiles encountered by the heat transfer banks are very similar.

Andrew Seltzer

2005-01-01T23:59:59.000Z

356

Towards internationally acceptable standards for food additives and contaminants based on the use of risk analysis  

Science Journals Connector (OSTI)

Internationally acceptable norms need to incorporate sound science and consistent risk management principles in an open and transparent manner, as set out in the Agreement on the Application of Sanitary and Phytosanitary Measures (the SPS Agreement). The process of risk analysis provides a procedure to reach these goals. The interaction between risk assessors and risk managers is considered vital to this procedure. This paper reports the outcome of a meeting of risk assessors and risk managers on specific aspects of risk analysis and its application to international standard setting for food additives and contaminants. Case studies on aflatoxins and aspartame were used to identify the key steps of the interaction process which ensure scientific justification for risk management decisions. A series of recommendations were proposed in order to enhance the scientific transparency in these critical phases of the standard setting procedure.

Anthony Huggett; Barbara J Petersen; Ron Walker; Chris E Fisher; Servé H.W Notermans; Frans M Rombouts; Peter Abbott; M Debackere; Steve C Hathaway; Edwin F.F Hecker; Ada G.A Knaap; Paul M Kuznesof; Inge Meyland; Gerald Moy; Jean-François Narbonne; Juhani Paakkanen; Maurice R Smith; David Tennant; Peter Wagstaffe; John Wargo; Gunna Würtzen

1998-01-01T23:59:59.000Z

357

Functional assessment of interconnected aquatic ecosystems in the Baiyangdian Basin—An ecological-network-analysis based approach  

Science Journals Connector (OSTI)

Many individual aquatic ecosystems are hydraulically interconnected and form specific network structures that display integral characteristics. The functional assessment of individual aquatic ecosystems is important, yet inadequate, for developing effective protection and restoration policies in basins, in which multiple interconnected aquatic ecosystems are involved. Here, we developed a framework to use ecological network analysis for functional assessment of a large system composed of various aquatic ecosystems in the context of network-based management. Five storage factor-included network indices were used to characterize the system functioning that was defined here as a performance with a certain of system activities and organization. A deviation index (D), combining normalized input, internal and output ascendency, was used to analyze the degree and causes of system functional variation. China's Baiyangdian Lake, a typical aquatic ecosystem, was taken as a case study. The results demonstrated that these storage factor-included network indices could well depict the system attributes and provide integral functional assessment of the aquatic ecosystems network in the Baiyangdian Basin. The functions of the aquatic ecosystems network presented distinct seasonal fluctuations, and there was a continuous decline in system functioning over the period of 1959–1978. Both natural and human causes contributed to the functional degradation, while the latter one dominated the degradation. Current study provided an example of how the network analysis might improve the understanding of the integral functioning of interconnected aquatic ecosystems.

Xufeng Mao; Zhifeng Yang

2011-01-01T23:59:59.000Z

358

Comparative analysis of energy data bases for the industrial and commercial sectors  

SciTech Connect

Energy data bases for the industrial and commercial sectors were analyzed to determine how valuable this data might be for policy analysis. The approach is the same for both end-use sectors: first a descrption or overview of relevant data bases identifies the available data; the coverage and methods used to generate the data are then explained; the data are then characterized and examples are provided for the major data sets under consideration. A final step assesses the data bases under consideration and draws conclusions. There are a variety of data bases considered for each of the end-use sectors included in this report. Data bases for the industrial sector include the National Energy Accounts, process-derived data bases such as the Drexel data base and data obtained from industry trade associations. For the commercial sector, three types of data bases are analyzed: the Nonresidential Building Energy Consumption Surveys, Dodge Construction Data and the Building Owners and Manager's Association Experience Exchange Report.

Roop, J.M.; Belzer, D.B.; Bohn, A.A.

1986-12-01T23:59:59.000Z

359

Waste-to-wheel analysis of anaerobic-digestion-based renewable natural gas pathways with the GREET model.  

SciTech Connect

In 2009, manure management accounted for 2,356 Gg or 107 billion standard cubic ft of methane (CH{sub 4}) emissions in the United States, equivalent to 0.5% of U.S. natural gas (NG) consumption. Owing to the high global warming potential of methane, capturing and utilizing this methane source could reduce greenhouse gas (GHG) emissions. The extent of that reduction depends on several factors - most notably, how much of this manure-based methane can be captured, how much GHG is produced in the course of converting it to vehicular fuel, and how much GHG was produced by the fossil fuel it might displace. A life-cycle analysis was conducted to quantify these factors and, in so doing, assess the impact of converting methane from animal manure into renewable NG (RNG) and utilizing the gas in vehicles. Several manure-based RNG pathways were characterized in the GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model, and their fuel-cycle energy use and GHG emissions were compared to petroleum-based pathways as well as to conventional fossil NG pathways. Results show that despite increased total energy use, both fossil fuel use and GHG emissions decline for most RNG pathways as compared with fossil NG and petroleum. However, GHG emissions for RNG pathways are highly dependent on the specifics of the reference case, as well as on the process energy emissions and methane conversion factors assumed for the RNG pathways. The most critical factors are the share of flared controllable CH{sub 4} and the quantity of CH{sub 4} lost during NG extraction in the reference case, the magnitude of N{sub 2}O lost in the anaerobic digestion (AD) process and in AD residue, and the amount of carbon sequestered in AD residue. In many cases, data for these parameters are limited and uncertain. Therefore, more research is needed to gain a better understanding of the range and magnitude of environmental benefits from converting animal manure to RNG via AD.

Han, J.; Mintz, M.; Wang, M. (Energy Systems)

2011-12-14T23:59:59.000Z

360

Consumption-based CO2 accounting of China's megacities: The case of Beijing, Tianjin, Shanghai and Chongqing  

Science Journals Connector (OSTI)

Abstract China has experienced rapid urbanization in the last three decades, with more than half of the population living in cities since 2012. The extent of urban production and urban lifestyles has become one of the main drivers for China's CO2 emissions. To analyze drivers of CO2 emissions we use a consumption-based accounting approach that allocates all emissions along the production chain to the product and place of final consumption, whereas a production-based approach would allocate all emissions to the place of origin. In this study, we focus on the spatial distribution of production activities leading to CO2 emissions across China as a consequence of final consumption in four Chinese mega cities: Beijing, Shanghai, Tianjin, and Chongqing. Urban consumption not only causes a large amount of emissions within its territory, but also imposes even much more emissions to its surrounding provinces via interregional supply chains. Results show that more than 48% of CO2 emissions related to goods consumed in Chongqing and more than 70% for Beijing, Shanghai and Tianjin occurred outside of the respective city boundary. In addition to the usual focus on efficiency, our analysis adds insights into the causes of CO2 emissions by looking at the drivers and types of consumption. Addressing consumption patterns in China's cities is critical for China's low carbon development.

Kuishuang Feng; Klaus Hubacek; Laixiang Sun; Zhu Liu

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Improving the Production and Presentation of Safety Cases through the use of Intranet Technology  

Science Journals Connector (OSTI)

A Safety Case requires that a large number of links are made between requirements, analysis and design documentation, and the safety analysis itself. Working in a paper based environment leads to a documentation ...

Rupert Brown

1998-01-01T23:59:59.000Z

362

A Web?based Tool For The Analysis Of Concept Inventory Data  

Science Journals Connector (OSTI)

“FOCIA” stands for Free Online Concept Inventory Analyzer. FOCIA our new web?based tool will allow teachers and researchers in any location to upload their test data and instantly receive a complete analysis report. Analyses included with this tool are basic test statistics Traditional Item Analysis Concentration Analysis Model Analysis Theory results pre and post test comparison including the calculations of gain normalized change and effect size. The tool currently analyzes data from the Lunar Phases Concept Inventory (LPCI) the Force Concept Inventory (FCI) the Astronomy Diagnostic Test (ADT) the Force and Motion Concept Inventory (FMCE) and generically any multiple choice test. It will be expanded to analyze data from other commonly utilized concept inventories in the PER community and from user?designed and uploaded tools. In this paper we will discuss the development of this analysis tool including some technical details of implementation and a description of what is available for use. Instructors and researchers are encouraged to use the latest version of the analysis tool via our website http://www.sciedures.org.

Joseph P. Beuckman; Scott V. Franklin; Rebecca S. Lindell

2005-01-01T23:59:59.000Z

363

GIS-based study of the spatial distribution suitability of livestock and poultry farming: The case of Putian, Fujian, China  

Science Journals Connector (OSTI)

Abstract Spatial distribution, based on which the spatial layout and scale for regional livestock and poultry farming are determined, is critical to planning. At present, quantitative research on this topic is rare in China and even elsewhere. To assist in rational planning as well as in the scientific layout of the spatial distribution of livestock and poultry farms, this study establishes an evaluation index system for the spatial distribution suitability of the livestock and poultry sector and adopts Delphi method and analytic hierarchy process (AHP) to standardize each evaluation factor that affects the suitable spatial layout of livestock and poultry farming and consequently, to assign weights. The system is based on theory of land suitability; the organic combination of social, economic, and environmental factors; and geographic information system technology. GIS software is employed to generate the thematic maps of a single evaluation factor. The score of each block of livestock farming land suitability evaluation is then generated based on the results of the suitability analysis for a single factor along with the weighted calculation result of the weight of each evaluation factor and the application of the GIS overlay function. Results show that regardless of the size or proportion of areas suitable for livestock and poultry farming, Xianyou County and Hanjiang District remain suitable for livestock and poultry breeding layout; quantity distribution should give priority to these two areas as well. Recommendations to adjust spatial layout planning for livestock and poultry farming in Putian, Xianyou County, must be improved. The north and northwest areas should be considered in the layout for livestock and poultry farming. Planning for Hanjiang District should be readjusted, and priority should be given to Zhuangbian Town, Dayang Village, Xinxian Town, and Jiangkou Town. Chengxiang and Licheng Districts are relatively ideal and require only appropriate fine tuning. Planning for Xiuyu District should be readjusted, and priority should be given to suitable villages and towns, such as Dongqiao Town, Hushi Town, and Dongzhuang Town.

Lihong Peng; Wenwen Chen; Ming Li; Yu Bai; Yipeng Pan

2014-01-01T23:59:59.000Z

364

U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Renewable Energy Technical Renewable Energy Technical Potentials: A GIS-Based Analysis Anthony Lopez, Billy Roberts, Donna Heimiller, Nate Blair, and Gian Porro Technical Report NREL/TP-6A20-51946 July 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 U.S. Renewable Energy Technical Potentials: A GIS- Based Analysis Anthony Lopez, Billy Roberts, Donna Heimiller, Nate Blair, and Gian Porro Prepared under Task Nos. SA10.1012 and SA10.20A4 Technical Report NREL/TP-6A20-51946

365

Approach to proliferation risk assessment based on multiple objective analysis framework  

SciTech Connect

The approach to the assessment of proliferation risk using the methods of multi-criteria decision making and multi-objective optimization is presented. The approach allows the taking into account of the specifics features of the national nuclear infrastructure, and possible proliferation strategies (motivations, intentions, and capabilities). 3 examples of applying the approach are shown. First, the approach has been used to evaluate the attractiveness of HEU (high enriched uranium)production scenarios at a clandestine enrichment facility using centrifuge enrichment technology. Secondly, the approach has been applied to assess the attractiveness of scenarios for undeclared production of plutonium or HEU by theft of materials circulating in nuclear fuel cycle facilities and thermal reactors. Thirdly, the approach has been used to perform a comparative analysis of the structures of developing nuclear power systems based on different types of nuclear fuel cycles, the analysis being based on indicators of proliferation risk.

Andrianov, A.; Kuptsov, I. [Obninsk Institute for Nuclear Power Engineering of NNRU MEPhI (Russian Federation); Studgorodok 1, Obninsk, Kaluga region, 249030 (Russian Federation)

2013-07-01T23:59:59.000Z

366

Speech Emotion Feature Selection Method Based on Contribution Analysis Algorithm of Neural Network  

SciTech Connect

There are many emotion features. If all these features are employed to recognize emotions, redundant features may be existed. Furthermore, recognition result is unsatisfying and the cost of feature extraction is high. In this paper, a method to select speech emotion features based on contribution analysis algorithm of NN is presented. The emotion features are selected by using contribution analysis algorithm of NN from the 95 extracted features. Cluster analysis is applied to analyze the effectiveness for the features selected, and the time of feature extraction is evaluated. Finally, 24 emotion features selected are used to recognize six speech emotions. The experiments show that this method can improve the recognition rate and the time of feature extraction.

Wang Xiaojia; Mao Qirong; Zhan Yongzhao [School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang, 212013 (China)

2008-11-06T23:59:59.000Z

367

Gene-set Cohesion Analysis Tool (GCAT): A literature based web tool for calculating functional cohesiveness of gene groups  

Science Journals Connector (OSTI)

Numerous algorithms exist for producing gene sets from high-throughput genomic and proteomic technologies. However, analysis of the functional significance of these groups of genes or proteins remains a big challenge. We developed a Web based system ... Keywords: interferon, gene set cohesion analysis tool, functional cohesiveness, gene groups, genomics, proteomics, latent semantic indexing, gene ontology, embryonic fibroblasts, literature based Web tool, gene-gene literature similarities, microarray data analysis

Lijing Xu; R. Homayouni; N. A. Furlotte; K. E. Heinrich; E. O. George; M. W. Berry

2009-11-01T23:59:59.000Z

368

Comparison and analysis of energy consumption of energy-efficient office buildings in different climate regions in China: case studies  

Science Journals Connector (OSTI)

The purpose of this paper is to analyze the energy consumption (EC) and find out the determining factors of energy-efficient office building cases according to specific case studies in typical cities of differ...

Ke Zhang; Neng Zhu

2013-09-01T23:59:59.000Z

369

Learning and Transfer in a Complex Professional Development Setting: A Cross-Case Analysis of the Perceptions and Practices of Science Teachers  

E-Print Network (OSTI)

.................................................161! &$ MRS. PATTON WITHIN-CASE ANALYSIS.....................................163! Introduction.................................................................................164! School Context...?s class.........................................................................................................124! 5.2! M-SCOPS Profile from Mrs. Major?s second observation....................130! 6.1! Stills from Mrs. Patton?s first observation...

Brooks, Lisa A.

2010-07-14T23:59:59.000Z

370

Risk analysis using FMEA: Fuzzy similarity value and possibility theory based approach  

Science Journals Connector (OSTI)

Abstract Fuzzy numerical technique for FMEA has been proposed to deal with the drawbacks of crisp FMEA and fuzzy rule based FMEA approaches. Fuzzy numerical approaches based on de-fuzzification also suffer from the drawback of providing arbitrary priority ranks of failure modes even when their membership functions overlap. To overcome this drawback we developed a new methodology integrating the concepts of similarity value measure of fuzzy numbers and possibility theory. Similarity value measure has been applied to group together failure modes having similar amount of risk value. The possibility theory has been used for checking for conformance guidelines. Two case studies have been shown to demonstrate the methodology thus developed. The proposed methodology is more robust in nature as it does not require arbitrary precise operations like de-fuzzification to prioritise the failure modes. Application of possibility theory is new to the domain of risk analysing using FMEA.

Saptarshi Mandal; J. Maiti

2014-01-01T23:59:59.000Z

371

Microalgae-based biodiesel: Economic analysis of downstream process realistic scenarios  

Science Journals Connector (OSTI)

Abstract Microalgae oil has been identified as a reliable resource for biodiesel production due to its high lipid productivity and potential cultivation in non-fertile locations. However, high scale production of microalgae based biodiesel depends on the optimization of the entire process to be economically feasible. The selected strain, medium, harvesting methods, etc., sorely affects the ash content in the dry biomass which have a direct effect in the lipid content. Moreover, the suitable lipids for biodiesel production, some of the neutral/saponifiable, are only a fraction of the total ones (around 30% dry base biomass in the best case). The present work uses computational tools for the modeling of different scenarios of the harvesting, oil extraction and transesterification. This rigorous modeling approach detects process bottlenecks that could have led to an overestimation of the potentiality of the microalgae lipids as a resource for the biodiesel production.

Sergio D. Ríos; Carmen M. Torres; Carles Torras; Joan Salvadó; Josep M. Mateo-Sanz; Laureano Jiménez

2013-01-01T23:59:59.000Z

372

Optimal Design of a Fossil Fuel-Based Hydrogen Infrastructure with Carbon Capture and Sequestration: Case Study in Ohio  

E-Print Network (OSTI)

Infrastructure with Carbon Capture and Sequestration: CaseINFRASTRUCTURE WITH CARBON CAPTURE AND SEQUESTRATION: CASEhydrogen production with carbon capture and sequestration,

Johnson, Nils; Yang, Christopher; Ni, Jason; Johnson, Joshua; Lin, Zhenhong; Ogden, Joan M

2005-01-01T23:59:59.000Z

373

Satellite-based overshooting top detection methods and an analysis of correlated weather conditions  

Science Journals Connector (OSTI)

The paper addresses two topics: the possibilities of satellite-based automatic detection of overshooting convective cloud tops and the connection between the overshootings and the occurrence of severe weather on the ground. Because the use of visible images is restricted to daytime, four detection methods based on the Meteosat Second Generation SEVIRI 10.8 ?m infra-red window channel and the absorption channels of water vapor (6.2 ?m), ozone (9.7 ?m) and carbon dioxide (13.4 ?m) in the form of brightness temperature differences were used. The theoretical background of all four methods is explained, and the detection results are compared with daytime high?resolution visible (HRV) satellite images to validate each method. Of the four tested methods, the best performance is found for the combination of brightness temperature differences 6.2–10.8 and 9.7–10.8 ?m, which are correlated to overshootings in HRV images in 80% of the cases. The second part of the research is focused on determining whether the appearance of the overshooting top, a manifestation of a very strong updraft in the cloud, can be connected to an abrupt change of certain weather elements on the ground. For all overshooting tops found by the above-mentioned combined method, automatic station data within the range of 0.1° and available hail observations within 0.2° were analyzed. The results show that the overshootings are connected to precipitation in 80% and to wind gusts in 70% of the cases; in contrast, a slightly lower correlation was found for temperature and humidity changes. Hail is observed in the vicinity of the overshooting in 38% of the cases.

Petra Mikuš; Nataša Strelec Mahovi?

2013-01-01T23:59:59.000Z

374

Alcohol Quantity and Type on Risk of Recurrent Gout Attacks: An Internet-based Case-crossover Study  

Science Journals Connector (OSTI)

AbstractObjectives Although beer and liquor have been associated with risk of incident gout, wine has not. Yet anecdotally, wine is thought to trigger gout attacks. Further, how much alcohol intake is needed to increase the risk of gout attack is not known. We examined the quantity and type of alcohol consumed on risk of recurrent gout attacks. Methods We conducted a prospective Internet-based case-crossover study in the US among participants with gout and who had at least one attack during the 1 year of follow-up. We evaluated the association of alcohol intake over the prior 24 hours as well as the type of alcoholic beverage with risk of recurrent gout attack, adjusting for potential time-varying confounders. Results This study included 724 participants with gout (78% men, mean age 54 years). There was a significant dose-response relationship between amount of alcohol consumption and risk of recurrent gout attacks (P gout attack was 1.36 (95% confidence interval [CI], 1.00-1.88) and 1.51 (95% CI, 1.09-2.09) times higher for >1-2 and >2-4 alcoholic beverages, respectively, compared with no alcohol consumption in the prior 24 hours. Consuming wine, beer, or liquor was each associated with an increased risk of gout attack. Conclusions Episodic alcohol consumption, regardless of type of alcoholic beverage, was associated with an increased risk of recurrent gout attacks, including potentially with moderate amounts. Individuals with gout should limit alcohol intake of all types to reduce the risk of recurrent gout attacks.

Tuhina Neogi; Clara Chen; Jingbo Niu; Christine Chaisson; David J. Hunter; Yuqing Zhang

2014-01-01T23:59:59.000Z

375

GIS-based energy-economic model of low temperature geothermal resources: A case study in the Italian Marche region  

Science Journals Connector (OSTI)

This paper presents a computational procedure designed to derive a regional model of the low temperature geothermal potential and its economic exploitability. The model was applied to the Italian Marche region and developed with the support of a Geographic Information System (GIS), which highlights the spatial dependencies in the distribution of geothermic resources. The Low Temperature Geothermal Energy has already gained attention as a renewable energy resource for domestic heating and represents a growing opportunity for investment. Although it is common practice to conduct an accurate evaluation of the geothermal potential and its exploitability on a site during the construction of a single installation, there is not an established practice or guidelines for estimating this resource over large territories. This information could support an institution’s ability to conduct regional energy planning and guide private entrepreneurship to meet new economic opportunities. To address these issues, the main contribution of this work is a model that reduces the distance between the physical knowledge of the territory/environment and economic analysis. The model is based on a useful assessment of low temperature geothermal potential obtained from physical parameters on a regional scale, from which a set of economic indicators are calculated to evaluate the actual economic accessibility to the geothermal energy resource.

Alberto Gemelli; Adriano Mancini; Sauro Longhi

2011-01-01T23:59:59.000Z

376

Automatic screening of obstructive sleep apnea from the ECG based on empirical mode decomposition and wavelet analysis  

E-Print Network (OSTI)

Automatic screening of obstructive sleep apnea from the ECG based on empirical mode decomposition apnea from the ECG based on empirical mode decomposition and wavelet analysis M O Mendez1,2 , J Corthout different methods to detect obstructive sleep apnea (OSA) during sleep time based only on the ECG signal

377

Ninja data analysis with a detection pipeline based on the Hilbert-Huang Transform  

E-Print Network (OSTI)

The Ninja data analysis challenge allowed the study of the sensitivity of data analysis pipelines to binary black hole numerical relativity waveforms in simulated Gaussian noise at the design level of the LIGO observatory and the VIRGO observatory. We analyzed NINJA data with a pipeline based on the Hilbert Huang Transform, utilizing a detection stage and a characterization stage: detection is performed by triggering on excess instantaneous power, characterization is performed by displaying the kernel density enhanced (KD) time-frequency trace of the signal. Using the simulated data based on the two LIGO detectors, we were able to detect 77 signals out of 126 above SNR 5 in coincidence, with 43 missed events characterized by signal to noise ratio SNR less than 10. Characterization of the detected signals revealed the merger part of the waveform in high time and frequency resolution, free from time-frequency uncertainty. We estimated the timelag of the signals between the detectors based on the optimal overlap of the individual KD time-frequency maps, yielding estimates accurate within a fraction of a millisecond for half of the events. A coherent addition of the data sets according to the estimated timelag eventually was used in a characterization of the event.

Alexander Stroeer; Jordan Camp

2009-03-11T23:59:59.000Z

378

A novel acquisition method of nuclear spectrum based on pulse area analysis  

E-Print Network (OSTI)

A novel method based on pulse area analysis(PAA) was presented for acquisition nuclear spectrum by the digitizer. PAA method can be used as a substitute for the traditional method of pulse height analysis (PHA). In the PAA method a commercial digitizer was employed to sample and sum in the pulse, and the area of pulse is proportional to the energy of the detected radiation. The results of simulation and experiment indicate the great advantages of PAA method, especially when the count rate is high and shaping time constant is small. When shaping time constant is 0.5us, the energy resolution of PAA is about 66% better than that of PHA.

Dongcang, Li; Lei, Yang; Zhong, Qi; Xiangting, Meng; Bitao, Hu

2014-01-01T23:59:59.000Z

379

A novel acquisition method of nuclear spectrum based on pulse area analysis  

E-Print Network (OSTI)

A novel method based on pulse area analysis(PAA) was presented for acquisition nuclear spectrum by the digitizer. PAA method can be used as a substitute for the traditional method of pulse height analysis (PHA). In the PAA method a commercial digitizer was employed to sample and sum in the pulse, and the area of pulse is proportional to the energy of the detected radiation. The results of simulation and experiment indicate the great advantages of PAA method, especially when the count rate is high and shaping time constant is small. When shaping time constant is 0.5us, the energy resolution of PAA is about 66% better than that of PHA.

Li Dongcang; Ren Zhongguo; Yang Lei; Qi Zhong; Meng Xiangting; Hu Bitao

2014-07-23T23:59:59.000Z

380

Exergy and exergoeconomic analysis and optimisation of diesel engine based Combined Heat and Power (CHP) system using genetic algorithm  

Science Journals Connector (OSTI)

In the present study, a diesel engine based Combined Heat and Power (CHP) system is optimised using exergoeconomic concept and genetic algorithm. For this purpose, the CHP system is first thermodynamically analysed through energy and exergy. Then cost balances and auxiliary equations are applied to subsystems. Finally an objective function representing fuel cost, cost of exergy loss and destruction and purchase and maintenance cost of the system components is considered for the optimisation study. Furthermore the above procedure is applied for a case study that produces 277 kW of electricity and 282 kW of heat. Also exergetic and exergoeconomic parameters are calculated in optimum case and compared with the base case. The results show that by applying the optimisation approach for our case study, 8.02% reduction in objective function is achieved which is might be considerable in CHP systems optimisation.

Farzad Mohammadkhani; Shahram Khalilarya; Iraj Mirzaee

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Cancer progression analysis based on ordinal relationship of cancer stages and co-expression network modularity  

Science Journals Connector (OSTI)

A comprehensive understanding of cancer progression may shed light on genetic and molecular mechanisms of oncogenesis, and provide important information for effective diagnosis and prognosis. We propose a multicategory logit model to identify genes that show significant correlations across multiple cancer stages. We have applied the approach on a Prostate Cancer (PCA) progression data and obtained a set of genes that show consistent trends across multiple stages. Further analysis based on multiple evidences demonstrates that our candidate list includes not only some well-known prostate-cancer-related genes, but also novel genes that have been confirmed very recently.

Yoon Soo Pyon; Xin Li; Jing Li

2011-01-01T23:59:59.000Z

382

Genetic Algorithms for Agent-Based Infrastructure Interdependency Modeling and Analysis  

SciTech Connect

Today’s society relies greatly upon an array of complex national and international infrastructure networks such as transportation, electric power, telecommunication, and financial networks. This paper describes initial research combining agent-based infrastructure modeling software and genetic algorithms (GAs) to help optimize infrastructure protection and restoration decisions. This research proposes to apply GAs to the problem of infrastructure modeling and analysis in order to determine the optimum assets to restore or protect from attack or other disaster. This research is just commencing and therefore the focus of this paper is the integration of a GA optimization method with a simulation through the simulation’s agents.

May Permann

2007-03-01T23:59:59.000Z

383

Statistical process control based on Multivariate Image Analysis: A new proposal for monitoring and defect detection  

Science Journals Connector (OSTI)

Abstract The monitoring, fault detection and visualization of defects are a strategic issue for product quality. This paper presents a novel methodology based on the integration of textural Multivariate Image Analysis (MIA) and multivariate statistical process control (MSPC) for process monitoring. The proposed approach combines MIA and p-control charts, as well as T2 and RSS images for defect location and visualization. Simulated images of steel plates are used to illustrate the monitoring performance of it. Both approaches are also applied on real clover images.

J.M. Prats-Montalbán; A. Ferrer

2014-01-01T23:59:59.000Z

384

Additive manufacturing technology and material selection for direct manufacture of products based on computer aided design geometric feature analysis  

Science Journals Connector (OSTI)

This paper presents research into the development of an algorithm developed in a Visual Basic programming environment that aids in the selection of materials processed using additive manufacturing (AM) technologies. AM technologies such as selective laser sintering (SLS) and fused deposition modelling (FDM) have limitations on the materials available to them and each system has factors that limit the geometric freedom of the components that they can produce. Thus, materials capable of being processed on these types of technology can be selected through a method of traversing the geometric features of a computer aided design (CAD) model and performing an analysis of each individual feature's attributes. The algorithm developed for this research uses data based on minimum feature size and a model bounding box as criteria in the selection of suitable materials. Through integration with an existing commercially available CAD software package, a component can be automatically analysed for its geometric feature properties and attributes, returning suitable AM systems and material information for selection by the operator. A number of case studies are presented that highlight the successful operation of the AM technology and material selection tool that has been developed.

Paul C. Smith; Mihaela-Elena Lupeanu; Allan E.W. Rennie

2012-01-01T23:59:59.000Z

385

Comprehensive evaluation of coal-fired power plants based on grey relational analysis and analytic hierarchy process  

Science Journals Connector (OSTI)

In China, coal-fired power plants are the main supplier of electricity, as well as the largest consumer of coal and water resources and the biggest emitter of SOx, NOx, and greenhouse gases (GHGs). Therefore, it is important to establish a scientific, reasonable, and feasible comprehensive evaluation system for coal-fired power plants to guide them in achieving multi-optimisation of their thermal, environmental, and economic performance. This paper proposes a novel comprehensive evaluation method, which is based on a combination of the grey relational analysis (GRA) and the analytic hierarchy process (AHP), to assess the multi-objective performance of power plants. Unlike the traditional evaluation method that uses coal consumption as a basic indicator, the proposed evaluation method also takes water consumption and pollutant emissions as indicators. On the basis of the proposed evaluation method, a case study on typical 600 MW coal-fired power plants is carried out to determine the relevancy rules among factors including the coal consumption, water consumption, pollutant, and GHG emissions of power plants. This research offers new ideas and methods for the comprehensive performance evaluation of complex energy utilisation systems, and is beneficial to the synthesised consideration of resources, economy, and environment factors in system optimising and policy making.

Gang Xu; Yong-ping Yang; Shi-yuan Lu; Le Li; Xiaona Song

2011-01-01T23:59:59.000Z

386

Model-Based LCA for Sustainable Energy-Production from Olive-Oil Production: An Italian Agricultural-District Case  

Science Journals Connector (OSTI)

Renewable energy sources will play in the years to come a central role in moving the world onto a more secure, reliable and sustainable energy path. In this paper the case of an Italian power plant fed from bi...

Francesca Intini; Gianluca Rospi…

2014-01-01T23:59:59.000Z

387

Ode to the case report  

E-Print Network (OSTI)

JP. In defense of case reports and case series. Ann InternIJ. Evidence based case reports. Undergraduates in Cork have2. Vandenbroucke JP. Case reports of suspected adverse drug

Rosen, Ted

2008-01-01T23:59:59.000Z

388

Environmental analysis of an Eastern U. S. oil shale hydroretorting data base  

SciTech Connect

This paper summarizes the results of a preliminary environmental analysis of the HYTORT data base on eastern oil shale which identifies the potential types and quantities of pollutants emanating directly from hydroretorting. Trace constituents in the product gas and retort sour water are identified and the distribution of raw shale sulfur and nitrogen in the retorting products is determined. Bench scale unit runs performed in a recent HYTORT feasibility study form the data base primarily used for this study. The bench scale unit runs are a comprehensive series of tests which were designed to optimize the operating conditions on Indiana New Albany shale. The results of this study provide an indication of the pollutants which may potentially be produced during commercial operation of a HYTORT plant utilizing eastern oil shale, and subsequently, the types of control technologies which would be necessary.

Rex, R.C.; Lynch, P.A.; Hartstein, A.M.

1985-01-01T23:59:59.000Z

389

Economic Analysis for Conceptual Design of Oxygen-Based PC Boiler  

SciTech Connect

The objective of the economic analysis is to prepare a budgetary estimate of capital and operating costs of the O{sub 2}-fired PC power plant as well as for the equivalent conventional PC-fired power plant. Capital and operating costs of conventional steam generation, steam heating, and power generation equipment are estimated based on Foster Wheeler's extensive experience and database. Capital and operating costs of equipment, such as oxygen separation and CO{sub 2} liquefaction, are based on vendor supplied data and FW process plant experience. The levelized cost of electricity is determined for both the air-fired and O{sub 2}-fired power plants as well as the CO{sub 2} mitigation cost. An economic comparison between the O{sub 2}-fired PC and other alternate technologies is presented.

Andrew Seltzer

2005-02-01T23:59:59.000Z

390

Microalgae-based biodiesel: A multicriteria analysis of the production process using realistic scenarios  

Science Journals Connector (OSTI)

Abstract Microalgae-based biodiesel has several benefits over other resources such as less land use, potential cultivation in non-fertile locations, faster growth and especially a high lipid-to-biodiesel yield. Nevertheless, the environmental and economic behavior for high scale production depends on several variables that must be addressed in the scale-up procedure. In this sense, rigorous modeling and multicriteria evaluation are performed in order to achieve optimal topology for third generation biodiesel production. Different scenarios and the most promising technologies tested at pilot scale are assessed. Besides, the sensitivity analysis allows the detection of key operating variables and assumptions that have a direct effect on the lipid content. The deviation of these variables may lead to an erroneous estimation of the scale-up performance of the technology reviewed in the microalgae-based biodiesel process. The modeling and evaluation of different scenarios of the harvesting, oil extraction and transesterification help to identify greener and cheaper alternatives.

Carmen M. Torres; Sergio D. Ríos; Carles Torras; Joan Salvadó; Josep M. Mateo-Sanz; Laureano Jiménez

2013-01-01T23:59:59.000Z

391

FPGA Based Real-time Network Traffic Analysis using Traffic Dispersion Patterns  

SciTech Connect

The problem of Network Traffic Classification (NTC) has attracted significant amount of interest in the research community, offering a wide range of solutions at various levels. The core challenge is in addressing high amounts of traffic diversity found in today's networks. The problem becomes more challenging if a quick detection is required as in the case of identifying malicious network behavior or new applications like peer-to-peer traffic that have potential to quickly throttle the network bandwidth or cause significant damage. Recently, Traffic Dispersion Graphs (TDGs) have been introduced as a viable candidate for NTC. The TDGs work by forming a network wide communication graphs that embed characteristic patterns of underlying network applications. However, these patterns need to be quickly evaluated for mounting real-time response against them. This paper addresses these concerns and presents a novel solution for real-time analysis of Traffic Dispersion Metrics (TDMs) in the TDGs. We evaluate the dispersion metrics of interest and present a dedicated solution on an FPGA for their analysis. We also present analytical measures and empirically evaluate operating effectiveness of our design. The mapped design on Virtex-5 device can process 7.4 million packets/second for a TDG comprising of 10k flows at very high accuracies of over 96%.

Khan, F; Gokhale, M; Chuah, C N

2010-03-26T23:59:59.000Z

392

Loading and Regeneration Analysis of a Diesel Particulate Filter with a Radio Frequency-Based Sensor  

SciTech Connect

Accurate knowledge of diesel particulate filter (DPF) loading is critical for robust and efficient operation of the combined engine-exhaust aftertreatment system. Furthermore, upcoming on-board diagnostics regulations require on-board technologies to evaluate the status of the DPF. This work describes the application of radio frequency (RF) based sensing techniques to accurately measure DPF soot levels and the spatial distribution of the accumulated material. A 1.9L GM turbo diesel engine and a DPF with an RF-sensor were studied. Direct comparisons between the RF measurement and conventional pressure-based methods were made. Further analysis of the particulate matter loading rates was obtained with a mass-based soot emission measurement instrument (TEOM). Comparison with pressure drop measurements show the RF technique is unaffected by exhaust flow variations and exhibits a high degree of sensitivity to DPF soot loading and good dynamic response. Additional computational and experimental work further illustrates the spatial resolution of the RF measurements. Based on the experimental results, the RF technique shows significant promise for improving DPF control enabling optimization of the combined engine-aftertreatment system for improved fuel economy and extended DPF service life.

Sappok, Alex [Filter Sensing Technologies] [Filter Sensing Technologies; Prikhodko, Vitaly Y [ORNL] [ORNL; Parks, II, James E [ORNL

2010-01-01T23:59:59.000Z

393

Gene selection using rough set based on neighborhood for the analysis of plant stress response  

Science Journals Connector (OSTI)

Abstract Gene selection and sample classification based on gene expression data are important research trends in bioinformatics. It is very difficult to select significant genes closely related to classification because of the high dimension and small sample size of gene expression data. Rough set based on neighborhood has been successfully applied to gene selection, as it selects attributes without redundancy and deals with numerical attributes directly. Construction of neighborhoods, approximation operators and attribute reduction algorithm are three key components in this gene selection approach. In this study, a novel neighborhood named intersection neighborhood for numerical data was defined. The performances of two kinds of approximation operators were compared on gene expression data. A significant gene selection algorithm, which was applied to the analysis of plant stress response, was proposed by using positive region and gene ranking, and then this algorithm with thresholds optimization for intersection neighborhood was extended. The performance of the proposed algorithm, along with a comparison with other related methods, classical algorithms and rough set methods, was analyzed. The results of experiments on four data sets showed that intersection neighborhood was more flexible to adapt to the data with various structure, and approximation operator based on elementary set was more suitable for this application than that based on element. That was to say that the proposed algorithms were effective, as they could select significant gene subsets without redundancy and achieve high classification accuracy.

Jun Meng; Jing Zhang; Rui Li; Yushi Luan

2014-01-01T23:59:59.000Z

394

Economic analysis of exergy efficiency based control strategy for geothermal district heating system  

Science Journals Connector (OSTI)

Abstract In this study, the exergy efficiency based control strategy (ExEBCS) for exergy efficiency maximization in geothermal district heating systems (GDHSs) is economically evaluated. As a real case study, the Afyon GDHS in the city of Afyonkarahisar/Turkey is considered. Its actual thermal data as of average weekly data are collected in heating seasons during the period 2006–2010 for artificial neural network (ANN) modeling. The ANN modeling of the Afyon GDHS is used as a test system to demonstrate the effectiveness and economic impact of the ExEBCS under various operating conditions. Then, the ExEBCS is evaluated economically in case of application to real Afyon GDHS of the ExEBCS. The results show that the initial cost for the ExEBCS is more expensive than that for the old one by 6.33 kUS$/year as a result of replacing automatic controller. The saving in heat production makes the ExEBCS profitable by up to 7% of annual energy saving as a result of the increase in the heat production by 88% when the control system is operated. This results in a short payback period of 3.8 years. This study confirms that the use of ExEBCS in district heating systems (especially GDHS) is quite suitable.

Ali Keçeba?; ?smail Yabanova

2013-01-01T23:59:59.000Z

395

Object-Based Analysis of Satellite-Derived Precipitation Systems over the Low- and Midlatitude Pacific Ocean  

Science Journals Connector (OSTI)

The Method for Object-based Diagnostic Evaluation (MODE) developed by Davis et al. is implemented and extended to characterize the temporal behavior of objects and to perform a diagnostic analysis on the spatial distribution and properties of ...

Gregor Skok; Joe Tribbia; Jože Rakovec; Barbara Brown

2009-10-01T23:59:59.000Z

396

Over-allocation or abatement? : a preliminary analysis of the EU ETS based on the 2005 emission data  

E-Print Network (OSTI)

This paper provides an initial analysis of the EU ETS based on the installation-level data for verified emissions and allowance allocations in the first trading year. Those data, released on May 15, 2006, and subsequent ...

Ellerman, A. Denny

2006-01-01T23:59:59.000Z

397

Advances in X-Ray Chemical Analysis, Japan, 43 (2012) ISSN 0911-7806 Reviews on Forensic Analysis of Wakayama Arsenic Case  

E-Print Network (OSTI)

Advances in X-Ray Chemical Analysis, Japan, 43 (2012) ISSN 0911-7806 © X Reviews on Forensic;#12;43 49 X Adv. X-Ray. Chem. Anal., Japan 43, pp.49-87 (2012) 606-8501 X Reviews on Forensic Analysis-ray fluorescence analysis (SR-XRF) is used for forensic analysis. It has been clarified that the SPring- 8 SR

Jun, Kawai

398

Cost Analysis of an HIV/AIDS Prevention Project: A Case Study of the AIDS 3 Project in BENIN.  

E-Print Network (OSTI)

??HIV/AIDS Cost analysis The objective of this thesis is to undertake a cost analysis of an HIV/AIDS prevention programme targeting vulnerable groups in Benin. The… (more)

Mito-Yobo, Kodjo Ferdinand

2011-01-01T23:59:59.000Z

399

Risk decision analysis in emergency response: A method based on cumulative prospect theory  

Science Journals Connector (OSTI)

Emergency response of a disaster is generally a risk decision-making problem with multiple states. In emergency response analysis, it is necessary to consider decision-maker's (DM's) psychological behavior such as reference dependence, loss aversion and judgmental distortion, whereas DM's behavior is neglected in the existing studies on emergency response. In this paper, a risk decision analysis method based on cumulative prospect theory (CPT) is proposed to solve the risk decision-making problem in emergency response. The formulation and solution procedure of the studied emergency response problem are given. Then, according to CPT, the values of potential response results concerning each criterion are calculated. Consider the interdependence or conflict among criteria, Choquet integral is used to determine the values of each potential response result. Accordingly, the weights of probabilities of all potential response results are calculated. Furthermore, by aggregating the values and weights of response results, the prospect value of each response action (alternative) is determined, and overall prospect value of each response action is obtained by aggregating the prospect value and the cost of each action. According to the obtained overall prospect values, a ranking of all response actions can be determined. Finally, based on the background of emergency evacuation from barrier lake downstream villages, an example is given to illustrate the feasibility and validity of the proposed method.

Yang Liu; Zhi-Ping Fan; Yao Zhang

2014-01-01T23:59:59.000Z

400

Research article: Meta-analysis of microarray data: The case of imatinib resistance in chronic myelogenous leukemia  

Science Journals Connector (OSTI)

With the proliferation of related microarray studies by independent groups, a natural approach to analysis would be to combine the results across studies. In this article, we address a meta-analysis of the gene expression data on imatinib resistance ... Keywords: CML, Gene expression, Imatinib resistance, Meta-analysis, Microarrays

Francisco J. Burguillo; Javier Martin; Inmaculada Barrera; William G. Bardsley

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Application of Well-Based Surrogate Reservoir Models (SRMs) to Two Offshore Fields in Saudi Arabia, Case Study  

E-Print Network (OSTI)

SPE 153845 Application of Well-Based Surrogate Reservoir Models (SRMs) to Two Offshore Fields for presentation at the SPE Western North American Regional Meeting held in Bakersfield, California, USA, 19, the pressure and saturation changes at each grid block. Well-based SRM is based on the pattern recognition

Mohaghegh, Shahab

402

Full Length Article: An information fusion based method for liver classification using texture analysis of ultrasound images  

Science Journals Connector (OSTI)

This paper presents a method for classification of liver ultrasound images based on texture analysis. The proposed method uses a set of seven texture features having high discriminative power which can be used by radiologists to classify the liver. Feature ... Keywords: Discriminative index, Information fusion, Medical ultrasound imaging, Texture analysis, Tissue characterization

Mandeep Singh, Sukhwinder Singh, Savita Gupta

2014-09-01T23:59:59.000Z

403

Optimal Design of a Fossil Fuel-Based Hydrogen Infrastructure with Carbon Capture and Sequestration: Case Study in Ohio  

E-Print Network (OSTI)

GIS was used to identify the shortest distance pathways between all the coalGIS analysis, several existing spatial datasets were used, including census block population [1], existing coalGIS facilitates this analysis by allowing one to use existing spatially-referenced data, such as population distribution, coal

Johnson, Nils; Yang, Christopher; Ni, Jason; Johnson, Joshua; Lin, Zhenhong; Ogden, Joan M

2005-01-01T23:59:59.000Z

404

Technical and Economic Analysis of Thermal Solar Energy and Rainwater Use in a School Building Hydraulic System: A Case Study in a Brazilian City  

E-Print Network (OSTI)

TECHNICAL AND ECONOMICAL ANALYSIS OF THERMAL SOLAR ENERGY AND RAINWATER USE IN A SCHOOL BUILDING HYDRAULIC SYSTEM: A CASE STUDY IN A BRAZILIAN CITY Leila Maria Beloni C. Proti 1 , Ederaldo Godoy Júnior 2 , José Rui Camargo 3 1 Belo Horizonte... Leilabeloni@ig.com.br; rui@mec.unitau.br Abstract Thermal solar energy and rainwater utilization systems are presented as effective alternatives to the sole use of potable water and electricity in a Brazilian school building in Belo Horizonte...

Beloni, L. M.; Proti, C.; Godoy, E.; Camargo, J.

2005-01-01T23:59:59.000Z

405

Multi-Path Transportation Futures Study: Vehicle Characterization and Scenario Analyses - Appendix E: Other NEMS-MP Results for the Base Case and Scenarios  

NLE Websites -- All DOE Office Websites (Extended Search)

Appendix E: Other NEMS-MP Results Appendix E: Other NEMS-MP Results for the Base Case and Scenarios Energy Systems Division Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62

406

An empirical analysis on the adoption of alternative fuel vehicles:The case of natural gas vehicles  

E-Print Network (OSTI)

U.S. U.S. conventional B A NGV Penetration Rate Fig. 7.versus NGV market penetration rate in case-study countries.Zealand had an NGV penetration rate just over 10% in 1985,

Yeh, Sonia

2007-01-01T23:59:59.000Z

407

A classification approach for less popular webpages based on latent semantic analysis and rough set model  

Science Journals Connector (OSTI)

Abstract Nowadays, with the explosive growth of web information, the webpage classification faces great challenge. Computers have difficulty in understanding the semantic meaning of textual or non-textual webpages. Fortunately, Web 2.0 based collaborative tagging system brings new opportunities to solve this problem. It abstracts structured tags from unstructured content in webpages. However, large numbers of webpages on the Internet are less popular. Their tagging information is sparse, which makes their topic unclear and leads to ambiguous classification. Illuminated by the “ambiguous classification”, we name the less popular webpage “hesitant webpage”. In this paper, we propose an advanced approach for hesitant webpages classification. Firstly, hesitant webpages are divided into bridges, hubs and attached webpages according to their roles on the Internet. Secondly, attached webpages are classified by mining and extending their information in two perspectives. One is the latent semantic analysis (LSA) which is applied to fully explore the semantic meaning of sparse tags. It promotes accurate cognition of webpages semantically close to attached webpages. Another is the proposed density-relation-based rough set model which measures the affiliation degree of attached webpages in different categories. Experiment on real data shows that our approach effectively classifies the hesitant webpages base on the semantic meaning.

Jun Wang; Jiaxu Peng; Ou Liu

2015-01-01T23:59:59.000Z

408

Adapting numerical representations of lung contours us-ing Case-Based Reasoning and Artificial Neural Net-  

E-Print Network (OSTI)

and Nuclear Safety, France {farah,broggio,franck}@irsn.fr Abstract. In case of a radiological emergency situation involving accidental human exposure, a dosimetry evaluation must be established as soon, a dosimetry evaluation must be estab- lished for each potential victim (subject) as soon as possible. In most

Paris-Sud XI, Université de

409

Adapting a Beam-Based Rotordynamics Model to Accept a General Three-Dimensional Finite-Element Casing Model  

E-Print Network (OSTI)

-axisymmetric model, structural dynamics modes can be modeled by lateral modes in two orthogonal planes. Modal information of the complex 3D casing structures are generated, and then incorporated into the 2D code after a series of pre-processing steps. A reduction...

James, Stephen M.

2011-08-08T23:59:59.000Z

410

The Use of Explanations in Knowledge-Based Systems: Cognitive Perspectives and a Process-Tracing Analysis  

Science Journals Connector (OSTI)

This exploratory research investigates the nature of explanation use and factors that influence it during users' interaction with a knowledge-based system (KBS) for decision-making. It draws upon several cognitive perspectives to help understand when, ... Keywords: Explanations Explanations In Expert Systems Knowledge Based Systems Verbal Protocol Analysis

Ji-Ye Mao; Izak Benbasat

2000-08-01T23:59:59.000Z

411

GIS-Based Hazardous Gas Dispersion, Simulations and Analysis Debasis Karmakar, Samit Ray Chaudhuri and Eduardo Jose Maguino  

E-Print Network (OSTI)

GIS-Based Hazardous Gas Dispersion, Simulations and Analysis Debasis Karmakar, Samit Ray Chaudhuri methodology to be developed for hazardous gas dispersion connecting Disaster Simulation and Trace with GIS of Gas Dispersion Affected Area Overlaid on Satellite Image (using ArcGIS 9.2) Scenario-based Simulation

Shinozuka, Masanobu

412

Research of Real Estate Bubble Measurements Based on Ramsey Model – A Case Study of Nanning in China  

Science Journals Connector (OSTI)

Real estate bubble has become one of the serious problems that influence the economy sustainable development in our country. This paper employs Ramsey model to make measurement analysis on real estate bubbles in ...

Xiekui Zhang; Defu Wu

2011-01-01T23:59:59.000Z

413

The emergence of a mass community-based ecotourism theme park : the case of Ejido Chacchoben, Quintana Roo, Mexico.  

E-Print Network (OSTI)

?? In 1998, a dispute between a federal government agency and the local community of Chacchoben resulted in the emergence of a community-based ecotourism (CBE)… (more)

Beitl, Christine M.

2005-01-01T23:59:59.000Z

414

The evolution of home detention based sanctions frameworks in the USA and Australia up to 2013: a comparative case study.  

E-Print Network (OSTI)

??Contemporary Home Detention Based Sanctions (HDBS), which utilise electronic monitoring (EM) technology, became first available in the 1980s in the United States of America (USA).… (more)

Martinovic, M

2013-01-01T23:59:59.000Z

415

Mars Mission Analysis Trades Based on Legacy and Future Nuclear Propulsion Options  

Science Journals Connector (OSTI)

The purpose of this paper is to discuss the results of mission?based system trades when using a nuclear thermal propulsion (NTP) system for Solar System exploration. The results are based on comparing reactor designs that use a ceramic?metallic (CERMET) graphite matrix graphite composite matrix or carbide matrix fuel element designs. The composite graphite matrix and CERMET designs have been examined for providing power as well as propulsion. Approaches to the design of the NTP to be discussed will include an examination of graphite composite carbide and CERMET core designs and the attributes of each in regards to performance and power generation capability. The focus is on NTP approaches based on tested fuel materials within a prismatic fuel form per the Argonne National Laboratory testing and the ROVER/NERVA program. NTP concepts have been examined for several years at Pratt & Whitney Rocketdyne for use as the primary propulsion for human missions beyond earth. Recently an approach was taken to examine the design trades between specific NTP concepts; NERVA?based (UC)C?Graphite (UC ZrC)C?Composite (U Zr)C?Solid Carbide and UO2?W CERMET. Using Pratt & Whitney Rocketdyne’s multidisciplinary design analysis capability a detailed mission and vehicle model has been used to examine how several of these NTP designs impact a human Mars mission. Trends for the propulsion system mass as a function of power level (i.e. thrust size) for the graphite?carbide and CERMET designs were established and correlated against data created over the past forty years. These were used for the mission trade study. The resulting mission trades presented in this paper used a comprehensive modeling approach that captures the mission vehicle subsystems and NTP sizing.

Russell Joyner; Andrea Lentati; Jaclyn Cichon

2007-01-01T23:59:59.000Z

416

Mars Mission Analysis Trades Based on Legacy and Future Nuclear Propulsion Options  

SciTech Connect

The purpose of this paper is to discuss the results of mission-based system trades when using a nuclear thermal propulsion (NTP) system for Solar System exploration. The results are based on comparing reactor designs that use a ceramic-metallic (CERMET), graphite matrix, graphite composite matrix, or carbide matrix fuel element designs. The composite graphite matrix and CERMET designs have been examined for providing power as well as propulsion. Approaches to the design of the NTP to be discussed will include an examination of graphite, composite, carbide, and CERMET core designs and the attributes of each in regards to performance and power generation capability. The focus is on NTP approaches based on tested fuel materials within a prismatic fuel form per the Argonne National Laboratory testing and the ROVER/NERVA program. NTP concepts have been examined for several years at Pratt and Whitney Rocketdyne for use as the primary propulsion for human missions beyond earth. Recently, an approach was taken to examine the design trades between specific NTP concepts; NERVA-based (UC)C-Graphite, (UC,ZrC)C-Composite, (U,Zr)C-Solid Carbide and UO2-W CERMET. Using Pratt and Whitney Rocketdyne's multidisciplinary design analysis capability, a detailed mission and vehicle model has been used to examine how several of these NTP designs impact a human Mars mission. Trends for the propulsion system mass as a function of power level (i.e. thrust size) for the graphite-carbide and CERMET designs were established and correlated against data created over the past forty years. These were used for the mission trade study. The resulting mission trades presented in this paper used a comprehensive modeling approach that captures the mission, vehicle subsystems, and NTP sizing.

Joyner, Russell [Pratt and Whitney Rocketdyne, West Palm Beach, Florida (United States); Lentati, Andrea [Georgia Institute of Technology, Atlanta, Georgia (United States); Cichon, Jaclyn [University of Florida, Gainesville, Florida (United States)

2007-01-30T23:59:59.000Z

417

AVERAGE-CASE ANALYSIS OF PERFECT SORTING BY REVERSALS MATHILDE BOUVEL, CEDRIC CHAUVE, MARNI MISHNA, AND DOMINIQUE ROSSIN  

E-Print Network (OSTI)

, AND DOMINIQUE ROSSIN Abstract. Perfect sorting by reversals, a problem originating in computational genomics analysis of a sorting algorithm from computational genomics by generating function analysis of a family of trees. Motivation: a computational genomics problem. With the availability of a growing number

Chauve, Cedric

418

An energy?based updated modal approach for the efficient analysis of large trimmed models  

Science Journals Connector (OSTI)

Large trimmed models widely encountered in the automotive industry generally involve a body?in?white structure coupled to an acoustic cavity and covered by a set of trim components. Due to the large number of degrees of freedom of such models the direct analysis in physical coordinates though theoretically correct is not feasible on current computers. The paper presents an alternative and efficient solution strategy in modal coordinates that relies on an update of the modal parameters of the car body and the acoustic cavity based on the energetic behaviour of the trim components. The description of the trim component in terms of an energetic database simplifies the data exchange between the automotive manufactor and the trim provider. Furthermore it enables a fast frequency analysis of various loadcases/trim scenarios and makes optimisation possible. The updated modal approach implemented in Actran/Trim is applied on a simplified car model on which various trim components are applied. The application shows how the stiffening added mass and damping effects of each trim component can be derived from the energetic database and can guide an optimisation process.

Gregory Lielens; Benoit Van Den Nieuwenhof; Fabien Acher; Jean?Pierre Coyette

2008-01-01T23:59:59.000Z

419

Analysis of laser remote fusion cutting based on a mathematical model  

SciTech Connect

Laser remote fusion cutting is analyzed by the aid of a semi-analytical mathematical model of the processing front. By local calculation of the energy balance between the absorbed laser beam and the heat losses, the three-dimensional vaporization front can be calculated. Based on an empirical model for the melt flow field, from a mass balance, the melt film and the melting front can be derived, however only in a simplified manner and for quasi-steady state conditions. Front waviness and multiple reflections are not modelled. The model enables to compare the similarities, differences, and limits between laser remote fusion cutting, laser remote ablation cutting, and even laser keyhole welding. In contrast to the upper part of the vaporization front, the major part only slightly varies with respect to heat flux, laser power density, absorptivity, and angle of front inclination. Statistical analysis shows that for high cutting speed, the domains of high laser power density contribute much more to the formation of the front than for low speed. The semi-analytical modelling approach offers flexibility to simplify part of the process physics while, for example, sophisticated modelling of the complex focused fibre-guided laser beam is taken into account to enable deeper analysis of the beam interaction. Mechanisms like recast layer generation, absorptivity at a wavy processing front, and melt film formation are studied too.

Matti, R. S. [Department of Engineering Sciences and Mathematics, Luleĺ University of Technology, S-971 87 Luleĺ (Sweden); Department of Mechanical Engineering, College of Engineering, University of Mosul, Mosul (Iraq); Ilar, T.; Kaplan, A. F. H. [Department of Engineering Sciences and Mathematics, Luleĺ University of Technology, S-971 87 Luleĺ (Sweden)

2013-12-21T23:59:59.000Z

420

Classification of sags gathered in distribution substations based on multiway principal component analysis  

Science Journals Connector (OSTI)

Voltage sags, whether they occur in transmission or distribution systems, may severely damage the loads connected to the power system. As these problems could cost a great deal financially, electric utilities are very interested in finding the origins of sags, that is, whether they have been originated in the transmission network (high voltage (HV)) or in the distribution system (medium voltage (MV)). In addition to the needs of utilities and regulators, many researchers have been prompted to develop reliable methods to properly classify sags. Several of these methods, based on classifying meaningful features extracted from data and waveforms, have been proposed in the literature. Unlike those methods, though, we propose a systematic transformation of data, based on multiway principal component analysis (MPCA), to develop a new voltage sag classification procedure. Sampled voltage and current waveforms of previously registered sags are used together with the MPCA technique to obtain a lower dimensional model. This model is then used to project new sags and classify them according to their origin in the power system. Different classification criteria and parameters are examined to maximize the classification rates of not yet seen sags. Applying the proposed method to real sags recorded in substations demonstrates its applicability and power.

Abbas Khosravi; Joaquim Meléndez; Joan Colomer

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Breathing dynamics based parameter sensitivity analysis of hetero-polymeric DNA  

E-Print Network (OSTI)

We study the parameter sensitivity of hetero-polymeric DNA within the purview of DNA breathing dynamics. The degree of correlation between the mean bubble size and the model parameters are estimated for this purpose for three different DNA sequences. The analysis leads us to a better understanding of the sequence dependent nature of the breathing dynamics of hetero-polymeric DNA. Out of the fourteen model parameters for DNA stability in the statistical Poland-Scheraga approach, the hydrogen bond interaction $\\epsilon_{hb}(\\mathtt{AT})$ for an $\\mathtt{AT}$ base pair and the ring factor $\\xi$ turn out to be the most sensitive parameters. In addition, the stacking interaction $\\epsilon_{st}(\\mathtt{TA}-\\mathtt{TA})$ for an $\\mathtt{TA}-\\mathtt{TA}$ nearest neighbor pair of base-pairs is found to be the most sensitive one among all stacking interactions. Moreover, we also establish that the nature of stacking interaction has a deciding effect on the DNA breathing dynamics, not the number of times a particular st...

Talukder, Srijeeta; Chakraborti, Prantik; Metzler, Ralf; Banik, Suman K; Chaudhury, Pinaki

2014-01-01T23:59:59.000Z

422

Economic analysis of coal-fired cogeneration plants for Air Force bases  

SciTech Connect

The Defense Appropriations Act of 1986 requires the Department of Defense to use an additional 1,600,000 tons/year of coal at their US facilities by 1995 and also states that the most economical fuel should be used at each facility. In a previous study of Air Force heating plants burning gas or oil, Oak Ridge National Laboratory found that only a small fraction of this target 1,600,000 tons/year could be achieved by converting the plants where coal is economically viable. To identify projects that would use greater amounts of coal, the economic benefits of installing coal-fired cogeneration plants at 7 candidate Air Force bases were examined in this study. A life-cycle cost analysis was performed that included two types of financing (Air Force and private) and three levels of energy escalation for a total of six economic scenarios. Hill, McGuire, and Plattsburgh Air Force Bases were identified as the facilities with the best potential for coal-fired cogeneration, but the actual cost savings will depend strongly on how the projects are financed and to a lesser extent on future energy escalation rates. 10 refs., 11 figs., 27 tabs.

Holcomb, R.S.; Griffin, F.P.

1990-10-01T23:59:59.000Z

423

Zero-Emission Vehicle Scenario Cost Analysis Using A Fuzzy Set-Based Framework  

E-Print Network (OSTI)

Fuel Cell Vehicle Analysis of Energy Use, Emissions, and Cost,"Cost Analysis of Conventional and Fuel Cell/Battery Powered Urban Passenger Vehicles,cost analysis of several types of AFVs, but did not include fuel cell vehicles

Lipman, Timothy Edward

1999-01-01T23:59:59.000Z

424

Zero-Emission Vehicle Scenario Cost Analysis Using A Fuzzy Set-Based Framework  

E-Print Network (OSTI)

Fuel Cell Vehicle Analysis of Energy Use, Emissions, and Cost,&Cost Analysis of Conventional and Fuel Cell/Battery Powered Urban Passenger Vehicles,cost analysis of several types of AFV s, but did not include fuel cell vehicles

Lipman, Timothy E.

1999-01-01T23:59:59.000Z

425

Monitoring Based Commissioning: Benchmarking Analysis of 24 UC/CSU/IOU Projects  

SciTech Connect

Buildings rarely perform as intended, resulting in energy use that is higher than anticipated. Building commissioning has emerged as a strategy for remedying this problem in non-residential buildings. Complementing traditional hardware-based energy savings strategies, commissioning is a 'soft' process of verifying performance and design intent and correcting deficiencies. Through an evaluation of a series of field projects, this report explores the efficacy of an emerging refinement of this practice, known as monitoring-based commissioning (MBCx). MBCx can also be thought of as monitoring-enhanced building operation that incorporates three components: (1) Permanent energy information systems (EIS) and diagnostic tools at the whole-building and sub-system level; (2) Retro-commissioning based on the information from these tools and savings accounting emphasizing measurement as opposed to estimation or assumptions; and (3) On-going commissioning to ensure efficient building operations and measurement-based savings accounting. MBCx is thus a measurement-based paradigm which affords improved risk-management by identifying problems and opportunities that are missed with periodic commissioning. The analysis presented in this report is based on in-depth benchmarking of a portfolio of MBCx energy savings for 24 buildings located throughout the University of California and California State University systems. In the course of the analysis, we developed a quality-control/quality-assurance process for gathering and evaluating raw data from project sites and then selected a number of metrics to use for project benchmarking and evaluation, including appropriate normalizations for weather and climate, accounting for variations in central plant performance, and consideration of differences in building types. We performed a cost-benefit analysis of the resulting dataset, and provided comparisons to projects from a larger commissioning 'Meta-analysis' database. A total of 1120 deficiency-intervention combinations were identified in the course of commissioning the projects described in this report. The most common location of deficiencies was in HVAC equipment (65% of sites), followed by air-handling and distributions systems (59%), cooling plant (29%), heating plants (24%), and terminal units (24%). The most common interventions were adjusting setpoints, modifying sequences of operations, calibration, and various mechanical fixes (each done in about two-thirds of the sites). The normalized rate of occurrence of deficiencies and corresponding interventions ranged from about 0.1/100ksf to 10/100ksf, depending on the issue. From these interventions flowed significant and highly cost-effective energy savings For the MBCx cohort, source energy savings of 22 kBTU/sf-year (10%) were achieved, with a range of 2% to 25%. Median electricity savings were 1.9 kWh/sf-year (9%), with a range of 1% to 17%. Peak electrical demand savings were 0.2 W/sf-year (4%), with a range of 3% to 11%. The aggregate commissioning cost for the 24 projects was $2.9 million. We observed a range of normalized costs from $0.37 to 1.62/sf, with a median value of $1.00/sf for buildings that implemented MBCx projects. Per the program design, monitoring costs as a percentage of total costs are significantly higher in MBCx projects (median value 40%) than typical commissioning projects included in the Meta-analysis (median value of 2% in the commissioning database). Half of the projects were in buildings containing complex and energy-intensive laboratory space, with higher associated costs. Median energy cost savings were $0.25/sf-year, for a median simple payback time of 2.5 years. Significant and cost-effective energy savings were thus obtained. The greatest absolute energy savings and shortest payback times were achieved in laboratory-type facilities. While impacts varied from project to project, on a portfolio basis we find MBCx to be a highly cost-effective means of obtaining significant program-level energy savings across a variety of building types. Energy savings are ex

Mills, Evan; Mathew, Paul

2009-04-01T23:59:59.000Z

426

Assessment and risk analysis of casing and cement impairment in oil and gas wells in Pennsylvania, 2000–2012  

Science Journals Connector (OSTI)

...and/or casing impairment. Remedial action is often attempted once...contamination/gas migration investigations, but these types of inspections...annular vent" 20 Cement Squeeze Remedial cementing operation performed...patch", "perf" 34 Top Job Remedial cementing operation used to...

Anthony R. Ingraffea; Martin T. Wells; Renee L. Santoro; Seth B. C. Shonkoff

2014-01-01T23:59:59.000Z

427

E-Print Network 3.0 - analysis method based Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

5744 Methods of mechanical engineering analysis Stat 5044 Regression and analysis... for modeling & simulation of biological systems Math 5465-5466 Numerical ... Source: Lu, Chang...

428

Classification of Code Annotations and Discussion of Compiler-Support for Worst-Case Execution Time Analysis  

E-Print Network (OSTI)

of energy consumption, resource-aware code generation, or re- targetable code generators. Program execution providing explicit sup- port for WCET analysis would have on usage of these code annotations is discussed

429

3D DVH-based metric analysis versus per-beam planar analysis in IMRT pretreatment verification  

SciTech Connect

Purpose: To evaluate methods of pretreatment IMRT analysis, using real measurements performed with a commercial 2D detector array, for clinical relevance and accuracy by comparing clinical DVH parameters. Methods: We divided the work into two parts. The first part consisted of six in-phantom tests aimed to study the sensitivity of the different analysis methods. Beam fluences, 3D dose distribution, and DVH of an unaltered original plan were compared to those of the delivered plan, in which an error had been intentionally introduced. The second part consisted of comparing gamma analysis with DVH metrics for 17 patient plans from various sites. Beam fluences were measured with the MapCHECK 2 detector, per-beam planar analysis was performed with the MapCHECK software, and 3D gamma analysis and the DVH evaluation were performed using 3DVH software. Results: In a per-beam gamma analysis some of the tests yielded false positives or false negatives. However, the 3DVH software correctly described the DVH of the plan which included the error. The measured DVH from the plan with controlled error agreed with the planned DVH within 2% dose or 2% volume. We also found that a gamma criterion of 3%/3 mm was too lax to detect some of the forced errors. Global analysis masked some problems, while local analysis magnified irrelevant errors at low doses. Small hotspots were missed for all metrics due to the spatial resolution of the detector panel. DVH analysis for patient plans revealed small differences between treatment plan calculations and 3DVH results, with the exception of very small volume structures such as the eyes and the lenses. Target coverage (D{sub 98} and D{sub 95}) of the measured plan was systematically lower than that predicted by the treatment planning system, while other DVH characteristics varied depending on the parameter and organ. Conclusions: We found no correlation between the gamma index and the clinical impact of a discrepancy for any of the gamma index evaluation possibilities (global, local, 2D, or 3D). Some of the tests yielded false positives or false negatives in a per-beam gamma analysis. However, they were correctly accounted for in a DVH analysis. We also showed that 3DVH software is reliable for our tests, and is a viable method for correlating planar discrepancies with clinical relevance by comparing the measured DVH of target and OAR's with clinical tolerance.

Carrasco, Pablo; Jornet, Nuria; Latorre, Artur; Eudaldo, Teresa; Ruiz, Agusti; Ribas, Montserrat [Servei de Radiofisica i Radioproteccio, Hospital de la Santa Creu i Sant Pau, Sant Antoni Maria Claret, 167, 08025 Barcelona (Spain)

2012-08-15T23:59:59.000Z

430

Nickel-based superalloy operating temperature determination via analysis of gamma/gamma' microstructure and coating/base material interdiffusion  

E-Print Network (OSTI)

The average operating temperature of RENÉ N5® high pressure turbine blades was evaluated via [gamma]/[gamma]' microstructure and coating/base metal interdiffusion methods. The [gamma]' volume fraction was measured by point ...

Ham, Wendy D. (Wendy Decker)

2005-01-01T23:59:59.000Z

431

Performance Analysis of Positive-feedback-based Active Anti-islanding Schemes for Inverter-Based Distributed Generators  

SciTech Connect

Recently proposed positive-feedback-based anti-islanding schemes (AI) are highly effective in preventing islanding without causing any degradation in power quality. This paper aims to analyze the performance of these schemes quantitatively in the context of the dynamic models of inverter-based distributed generators (DG). In this study, the characteristics of these active anti-islanding methods are discussed and design guidelines are derived.

Du, Pengwei; Aponte, Erick E.; Nelson, J. Keith

2010-06-14T23:59:59.000Z

432

GIS-Based Regionalized Life Cycle Assessment: How Big Is Small Enough? Methodology and Case Study of Electricity Generation  

Science Journals Connector (OSTI)

GIS-Based Regionalized Life Cycle Assessment: How Big Is Small Enough? ... Several data sets were combined to form a life cycle inventory database of all large electricity generators in the United States for the year 2005. ... The North American Electric Reliability Corporation (NERC) defines 10 regions, mapped in section 5 of the SI, that have their own regulatory or technical independence. ...

Christopher L. Mutel; Stephan Pfister; Stefanie Hellweg

2011-12-27T23:59:59.000Z

433

A Case Study: A Model-Based Approach to Retrofit a Network Fault Management System with Self-Healing Functionality  

Science Journals Connector (OSTI)

Adding self-healing capabilities to network management systems holds great promise for delivering important goals, such as QoS, while simultaneously lowering capital expenditure, operation cost, and maintenance cost. In this paper, we present a model-based ... Keywords: Self-healing, aspect modeling, network management

Yan Liu; Jing Zhang; Michael Jiang; David Raymer; John Strassner

2008-03-01T23:59:59.000Z

434

Progress In Electromagnetics Research, Vol. 140, 297311, 2013 SIMPLE, TAYLOR-BASED WORST-CASE MODEL FOR  

E-Print Network (OSTI)

) is resolving unwanted electromagnetic interactions between electronic systems. The number of possibleProgress In Electromagnetics Research, Vol. 140, 297­311, 2013 SIMPLE, TAYLOR-BASED WORST Rennes Cedex 7, France Abstract--To obtain Electromagnetic Compatibility (EMC), we would like to study

Boyer, Edmond

435

Model-based Requirement Verification : A Case Study Feng Liang1,2 Wladimir Schamai3 Olena Rogovchenko1  

E-Print Network (OSTI)

the system. Modelica is non-proprietary, object-oriented, equation based language for modeling multi-domain complex physical systems. 2 An Integrated Modeling Approach 2.1 Requirement Specification in the Indus- quirements) approach. Keywords: system modeling; requirement verifica- tion; ModelicaML 1 Introduction

Zhao, Yuxiao

436

Catchment–coastal zone interaction based upon scenario and model analysis: Elbe and the German Bight case study  

Science Journals Connector (OSTI)

This paper presents a holistic strategy on the interaction of activities in the Elbe river basin and their effects on eutrophication in the coastal waters of the German Bight. This catchment–coastal zone interact...

J. Hofmann; H. Behrendt; A. Gilbert; R. Janssen; A. Kannen…

2005-06-01T23:59:59.000Z

437

Production Management Decision Analysis Using AI-Based Proxy Modeling of Reservoir Simulations A Look-Back Case Study  

E-Print Network (OSTI)

of peripheral water injection for many years to maintain pressure and help displace oil toward the production production as well as pulling oil from an over produced overlaying prolific reservoir. In 2005 a reservoir was to explore the likelihood of increasing oil production from the asset while minimizing the possibility

Mohaghegh, Shahab

438

Generating Economic Development from a Wind Power Plant in Spanish Fork Canyon, Utah: A Case Study and Analysis of State-Level Economic Impacts  

Wind Powering America (EERE)

Generating Economic Development from a Wind Power Generating Economic Development from a Wind Power Project in Spanish Fork Canyon, Utah: A Case Study and Analysis of State-Level Economic Impacts Sandra Reategui Edwin R. Stafford, Ph.D. Cathy L. Hartman, Ph.D. Center for the Market Diffusion of Renewable Energy and Clean Technology Jon M. Huntsman School of Business Utah State University 3560 Old Main Hill Logan, Utah 84322-3560 January 2009 DOE/GO-102009-2760 Acknowledgements ....................................................................................................................... 1 Introduction ................................................................................................................................... 2 Report Overview ......................................................................................................................... 2

439

Forecasting short-term electricity consumption using a semantics-based genetic programming framework: The South Italy case  

Science Journals Connector (OSTI)

Abstract Accurate and robust short-term load forecasting plays a significant role in electric power operations. This paper proposes a variant of genetic programming, improved by incorporating semantic awareness in algorithm, to address a short term load forecasting problem. The objective is to automatically generate models that could effectively and reliably predict energy consumption. The presented results, obtained considering a particularly interesting case of the South Italy area, show that the proposed approach outperforms state of the art methods. Hence, the proposed approach reveals appropriate for the problem of forecasting electricity consumption. This study, besides providing an important contribution to the energy load forecasting, confirms the suitability of genetic programming improved with semantic methods in addressing complex real-life applications.

Mauro Castelli; Leonardo Vanneschi; Matteo De Felice

2015-01-01T23:59:59.000Z

440

Attracting private investments into rural electrification — A case study on renewable energy based village grids in Indonesia  

Science Journals Connector (OSTI)

Abstract Renewable energy based village grids (RVGs) are widely considered to be a sustainable solution for rural electrification in non-OECD countries. However, diffusion rates of \\{RVGs\\} are relatively low. We take the viewpoint that, as public resources are scarce, investments from the private sector are essential to scale-up the diffusion. While existing literature mostly focuses on engineering, development and techno-economic aspects, the private sector's perspective remains under-researched. As investment decisions by private investors are mainly based on the risk/return profile of potential projects we — based on literature reviews and field research — investigate the risk and the return aspects of \\{RVGs\\} in Indonesia, a country with one of the largest potentials for RVGs. We find that considering the potential of local, national and international revenue streams, the returns of \\{RVGs\\} can be positive. Regarding the risk aspect, we see that private investors could address many of the existing barriers through their business model. However, the findings also point to the need for government action in order to further improve the risk/return profile and thereby attract private investments for RVGs.

Tobias S. Schmidt; Nicola U. Blum; Ratri Sryantoro Wakeling

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Depositional Model of the Marcellus Shale in West Virginia Based on Facies Analysis  

SciTech Connect

A lithologic analysis of well exposed Marcellus outcrops has identified six different facies in West Virginia and neighboring states: (1) light gray calcareous shale, (2) fossiliferous limestone, (3) black calcareous shale, (4) black noncalcareous shale, (5) dark gray noncalcareous shale, and (6) K-bentonite. Close interbedding of these rock types attests to a complex, ever-changing environment on the eastern foreland ramp of the Appalachian Basin. The environmental setting was clearly not a deep trough, permanently anoxic, salinity stratified, sediment starved, and populated exclusively by phytoplankton—the traditional depositional model. To the contrary, our sedimentary data suggest a rather shallow water depth, intermittent anoxia, normal-marine salinity, a fluctuating input of siliciclastic mud, and faunal communities of low and moderate diversity. Interbedding of the shale and limestone lithofacies as well as the vertical stacking of facies associations is explained most simply by fluctuations in water depth coupled with fluctuations in sediment supply. The sea floor was, at times, immediately below wave base (Facies 1 and 2), around the depth of the thermocline (Facies 2 and 3), or below the thermocline (Facies 4 and 5), relative sea level changing through two sequences of lowstand, transgression, and highstand. Simultaneously the supply of siliciclastic mud was greater at times of lowstand (increased erosion) and highstand (prograding shoreline), and the supply smaller during transgression (sediment stored in distant coastal plain).

Bruner, Kathy

2011-11-14T23:59:59.000Z

442

Submersion Criticality Safety Analysis of Tungsten-Based Fuel for Nuclear Power and Propulsion Applications  

SciTech Connect

The Center for Space Nuclear Research (CSNR) is developing tungsten-encapsulated fuels for space nuclear applications. Aims to develop NTP fuels that are; Affordable Low impact on production and testing environment Producible on a large scale over suitable time period Higher-performance compared to previous graphite NTP fuel elements Space nuclear reactors remain subcritical before and during launch, and do not go critical until required by its mission. A properly designed reactor will remain subcritical in any launch abort scenario, where the reactor falls back to Earth and becomes submerged in terrestrial material. Submersion increases neutron reflection and thermalizes the neutrons, which typically increases the reactivity of the core. This effect is usually very significant for fast-spectrum reactors. This research provided a submersion criticality safety analysis for a representative tungsten/uranium oxide fueled reactor. Determine the submersion behavior of a reactor fueled by tungsten-based fuel. Considered fuel compositions with varying: Rhenium content (wt% rhenium in tungsten) Fuel loading fractions (UO2 vol%)

A.E. Craft; R. C. O'Brien; S. D. Howe; J. C. King

2014-07-01T23:59:59.000Z

443

Low NOx Burner Design and Analysis for Conceptual Design of Oxygen-Based PC Boiler  

SciTech Connect

The objective of the low NOx burner design and analysis task of the Conceptual Design of Oxygen-Based PC Boiler study is to optimize the burner design to ensure stable ignition, to provide safe operation, and to minimize pollutant formation. The burners were designed and analyzed using the Fluent computer program. Four burner designs were developed: (1) with no over-fire gas (OFG) and 65% flue gas recycle, (2) with 20% OFG and 65% flue gas recycle, (3) with no OFG and 56% flue gas recycle and (4) with 20% OFG and 56% flue gas recycle. A 3-D Fluent simulation was made of a single wall-fired burner and horizontal portion of the furnace from the wall to the center. Without primary gas swirl, coal burnout was relatively small, due to the low oxygen content of the primary gas stream. Consequently, the burners were modified to include primary gas swirl to bring the coal particles in contact with the secondary gas. An optimal primary gas swirl was chosen to achieve sufficient burnout.

Andrew Seltzer

2005-05-01T23:59:59.000Z

444

Science-Based Simulation Model of Human Performance for Human Reliability Analysis  

SciTech Connect

Human reliability analysis (HRA), a component of an integrated probabilistic risk assessment (PRA), is the means by which the human contribution to risk is assessed, both qualitatively and quantitatively. However, among the literally dozens of HRA methods that have been developed, most cannot fully model and quantify the types of errors that occurred at Three Mile Island. Furthermore, all of the methods lack a solid empirical basis, relying heavily on expert judgment or empirical results derived in non-reactor domains. Finally, all of the methods are essentially static, and are thus unable to capture the dynamics of an accident in progress. The objective of this work is to begin exploring a dynamic simulation approach to HRA, one whose models have a basis in psychological theories of human performance, and whose quantitative estimates have an empirical basis. This paper highlights a plan to formalize collaboration among the Idaho National Laboratory (INL), the University of Maryland, and The Ohio State University (OSU) to continue development of a simulation model initially formulated at the University of Maryland. Initial work will focus on enhancing the underlying human performance models with the most recent psychological research, and on planning follow-on studies to establish an empirical basis for the model, based on simulator experiments to be carried out at the INL and at the OSU.

Dana L. Kelly; Ronald L. Boring; Ali Mosleh; Carol Smidts

2011-10-01T23:59:59.000Z

445

Fault Diagnosis for Dynamic Nonlinear System Based on Kernel Principal Component Analysis  

Science Journals Connector (OSTI)

Kernel principal component analysis is a type of nonlinear principal component analysis, to decouple the nonlinear correlation of variables by using kernel functions and integral operators, and by computing the principal components in the high dimensional ...

Yanwei Huang; Xianbo Qiu

2009-04-01T23:59:59.000Z

446

Zero-Emission Vehicle Scenario Cost Analysis Using A Fuzzy Set-Based Framework  

E-Print Network (OSTI)

Cycle Cost Analysis of Conventional and Fuel Cell/BatteryEVs A few cost analyses for complete PEM fuel cell systemshigh-volume PEM fuel cell system cost analysis has been

Lipman, Timothy E.

1999-01-01T23:59:59.000Z

447

Fast Electromagnetic Interference Analysis of Distributed Networks using Longitudinal Partitioning Based Waveform Relaxation  

E-Print Network (OSTI)

Fast Electromagnetic Interference Analysis of Distributed Networks using Longitudinal Partitioning -- In this paper, a waveform relaxation algorithm for the fast electromagnetic interference analysis of distributed is provided to demonstrate the validity of the proposed algorithm. Index Terms -- Electromagnetic interference

Roy, Sourajeet

448

Reliability analysis of urban gas transmission and distribution system based on FMEA and correlation operator  

Science Journals Connector (OSTI)

In order to improve the safety management of urban gas transmission and distribution system, failure mode and effects analysis (FMEA) was used to construct the reliability analysis ... the risk priority number (R...

Su Li; Weiguo Zhou

2014-12-01T23:59:59.000Z

449

Game theoretic analysis and agent-based simulation of electricity markets  

E-Print Network (OSTI)

In power system analysis, uncertainties in the supplier side are often difficult to estimate and have a substantial impact on the result of the analysis. This thesis includes preliminary work to approach the difficulties. ...

Ono, Teruo, S.M. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

450

Formal Concept Analysis Based on Rough Set Theory and a Construction Algorithm of Rough Concept Lattice  

Science Journals Connector (OSTI)

FCA(Formal Concept Analysis), which is accurate and complete in knowledge representation, is an effective tool for data analysis and knowledge discovery. A new lattice structure named RCL (Rough Concept Lattice) ...

Haifeng Yang

2011-01-01T23:59:59.000Z

451

Individual-based modeling of environmental quality effects on early life stages of fish: A case study using striped bass  

SciTech Connect

We demonstrate an individual-based approach to population modeling to evaluate environmental quality effects on early life stages of fishes. We believe that, regardless of the modeling approach, environmental quality effects ultimately must be evaluated at the population level. Determining population-level consequences of changes in environmental quality is critical because the population is the relevant endpoint of interest with respect to success of the species and its availability for harvest. It offers a common metric upon which to compare among different environmental factors, effects, and life stages.

Rose, K.A. (Oak Ridge National Lab., TN (United States)); Cowan, J.H. Jr. (University of South Alabama, Mobile, AL (United States). Dept. of Marine Sciences); Houde, E.D. (Maryland Univ., Solomons, MD (United States). Chesapeake Biological Lab.); Coutant, C.C. (Oak Ridge National Lab., TN (United States))

1992-01-01T23:59:59.000Z

452

Individual-based modeling of environmental quality effects on early life stages of fish: A case study using striped bass  

SciTech Connect

We demonstrate an individual-based approach to population modeling to evaluate environmental quality effects on early life stages of fishes. We believe that, regardless of the modeling approach, environmental quality effects ultimately must be evaluated at the population level. Determining population-level consequences of changes in environmental quality is critical because the population is the relevant endpoint of interest with respect to success of the species and its availability for harvest. It offers a common metric upon which to compare among different environmental factors, effects, and life stages.

Rose, K.A. [Oak Ridge National Lab., TN (United States); Cowan, J.H. Jr. [University of South Alabama, Mobile, AL (United States). Dept. of Marine Sciences; Houde, E.D. [Maryland Univ., Solomons, MD (United States). Chesapeake Biological Lab.; Coutant, C.C. [Oak Ridge National Lab., TN (United States)

1992-11-01T23:59:59.000Z

453

Pilot design of biomass energy resources inquiry system based on MapX: a case of Liyang city in China  

Science Journals Connector (OSTI)

With the rapid development of large- and medium-scale biomass energy utilisation in Jiangsu Province of China, to explore the potential of biomass energy resources availability becomes increasingly necessary. This paper analyses the biomass energy resources within Liyang City of Changzhou and designs a referral information system based on MapX software provided by Mapinfo GIS platform. The system is secondarily developed according to practical demand and achieves many functions of professional GIS software such as amplification, dwindling, scale enquiry, point enquiry, thememap and so on. The enquiry system will provide valuable reference to energy and environmental policies or relevant biomass energy enterprises.

Peibing Yan; Weiming Wu; Xiaohua Wang

2008-01-01T23:59:59.000Z

454

A hypercube-based data structure for spatio-temporal exploration and analysis  

E-Print Network (OSTI)

-temporal exploration and analysis are two complementary processes of Exploratory Data Analysis (EDA as defined by [4]). The exploration process aims at identifying hypotheses which are of interest to the user. These hypotheses consist] described the heuristic process which results from the repetitive chain of exploration and analysis

455

Microarray-Based Analysis of Microbial Community RNAs by Whole-Community RNA Amplification  

Science Journals Connector (OSTI)

...fluidized bed reactor which actively denitrified...for testing the reliability of amplification...available to perform the analysis using conventional...Global transcriptome analysis of the heat shock...profiling and genotype analysis. Nat. Rev. Genet...denitrifying fluidized bed reactor. Appl. Microbiol...

Haichun Gao; Zamin K. Yang; Terry J. Gentry; Liyou Wu; Christopher W. Schadt; Jizhong Zhou

2006-11-10T23:59:59.000Z

456

Monte Carlo Simulation-based Sensitivity Analysis of the Model of a Thermal-Hydraulic Passive System  

E-Print Network (OSTI)

1 Monte Carlo Simulation-based Sensitivity Analysis of the Model of a Thermal-Hydraulic Passive, and for this reason are expected to improve the safety of nuclear power plants. However, uncertainties are present Engineering and System Safety 107 (2012) 90-106" DOI : 10.1016/j.ress.2011.08.006 #12;2 power plants because

Paris-Sud XI, Université de

457

A multi-site analysis of random error2 in tower-based measurements of carbon and energy fluxes3  

E-Print Network (OSTI)

1 A multi-site analysis of random error2 in tower-based measurements of carbon and energy fluxes3 4 MEASUREMENTS Richardson et al. 1 January 13, 2006 Abstract1 Measured surface-atmosphere fluxes of energy open-path, gas analyzer is22 used.23 #12;RANDOM ERRORS IN ENERGY AND CO2 FLUX MEASUREMENTS Richardson

458

Autonomous Agent Navigation Based on Textural Analysis Rand C. Chandler, A. A. Arroyo, M. Nechyba, E.M. Schwartz  

E-Print Network (OSTI)

Autonomous Agent Navigation Based on Textural Analysis Rand C. Chandler, A. A. Arroyo, M. Nechyba, Florida International University ABSTRACT Navigating an autonomous agent outdoors can be a challenging task. As a basis for this research, the autonomous agent in question is that of an autonomous robotic

Schwartz, Eric M.

459

Big smog meets web science: smog disaster analysis based on social media and device data on the web  

Science Journals Connector (OSTI)

Nowadays, people are increasingly concerned about smog disaster and the caused health hazard. However, the current methods for big smog analysis are usually based on the traditional lagging data sources or merely adopt physical environment observations, ... Keywords: big smog, device data, health hazard, social media, stream data, web science

Jiaoyan Chen; Huajun Chen; Guozhou Zheng; Jeff Z. Pan; Honghan Wu; Ningyu Zhang

2014-04-01T23:59:59.000Z

460

Systems Analysis of an Advanced Nuclear Fuel Cycle Based on a Modified UREX+3c Process  

SciTech Connect

The research described in this report was performed under a grant from the U.S. Department of Energy (DOE) to describe and compare the merits of two advanced alternative nuclear fuel cycles -- named by this study as the “UREX+3c fuel cycle” and the “Alternative Fuel Cycle” (AFC). Both fuel cycles were assumed to support 100 1,000 MWe light water reactor (LWR) nuclear power plants operating over the period 2020 through 2100, and the fast reactors (FRs) necessary to burn the plutonium and minor actinides generated by the LWRs. Reprocessing in both fuel cycles is assumed to be based on the UREX+3c process reported in earlier work by the DOE. Conceptually, the UREX+3c process provides nearly complete separation of the various components of spent nuclear fuel in order to enable recycle of reusable nuclear materials, and the storage, conversion, transmutation and/or disposal of other recovered components. Output of the process contains substantially all of the plutonium, which is recovered as a 5:1 uranium/plutonium mixture, in order to discourage plutonium diversion. Mixed oxide (MOX) fuel for recycle in LWRs is made using this 5:1 U/Pu mixture plus appropriate makeup uranium. A second process output contains all of the recovered uranium except the uranium in the 5:1 U/Pu mixture. The several other process outputs are various waste streams, including a stream of minor actinides that are stored until they are consumed in future FRs. For this study, the UREX+3c fuel cycle is assumed to recycle only the 5:1 U/Pu mixture to be used in LWR MOX fuel and to use depleted uranium (tails) for the makeup uranium. This fuel cycle is assumed not to use the recovered uranium output stream but to discard it instead. On the other hand, the AFC is assumed to recycle both the 5:1 U/Pu mixture and all of the recovered uranium. In this case, the recovered uranium is reenriched with the level of enrichment being determined by the amount of recovered plutonium and the combined amount of the resulting MOX. The study considered two sub-cases within each of the two fuel cycles in which the uranium and plutonium from the first generation of MOX spent fuel (i) would not be recycled to produce a second generation of MOX for use in LWRs or (ii) would be recycled to produce a second generation of MOX fuel for use in LWRs. The study also investigated the effects of recycling MOX spent fuel multiple times in LWRs. The study assumed that both fuel cycles would store and then reprocess spent MOX fuel that is not recycled to produce a next generation of LWR MOX fuel and would use the recovered products to produce FR fuel. The study further assumed that FRs would begin to be brought on-line in 2043, eleven years after recycle begins in LWRs, when products from 5-year cooled spent MOX fuel would be available. Fuel for the FRs would be made using the uranium, plutonium, and minor actinides recovered from MOX. For the cases where LWR fuel was assumed to be recycled one time, the 1st generation of MOX spent fuel was used to provide nuclear materials for production of FR fuel. For the cases where the LWR fuel was assumed to be recycled two times, the 2nd generation of MOX spent fuel was used to provide nuclear materials for production of FR fuel. The number of FRs in operation was assumed to increase in successive years until the rate that actinides were recovered from permanently discharged spent MOX fuel equaled the rate the actinides were consumed by the operating fleet of FRs. To compare the two fuel cycles, the study analyzed recycle of nuclear fuel in LWRs and FRs and determined the radiological characteristics of irradiated nuclear fuel, nuclear waste products, and recycle nuclear fuels. It also developed a model to simulate the flows of nuclear materials that could occur in the two advanced nuclear fuel cycles over 81 years beginning in 2020 and ending in 2100. Simulations projected the flows of uranium, plutonium, and minor actinides as these nuclear fuel materials were produced and consumed in a fleet of 100 1,000 MWe LWRs and in FRs. The model als

E. R. Johnson; R. E. Best

2009-12-28T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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

Saeed, N., Yang, Y., & Sinnappan, S. (2009). Emerging Web Technologies in Higher Education: A Case of Incorporating Blogs, Podcasts and Social Bookmarks in a Web Programming Course based on Students' Learning Styles and Technology Preferences.  

E-Print Network (OSTI)

Saeed, N., Yang, Y., & Sinnappan, S. (2009). Emerging Web Technologies in Higher Education: A Case at kinshuk@ieee.org. Emerging Web Technologies in Higher Education: A Case of Incorporating Blogs, Podcasts, a research framework has been proposed to incorporate emerging web technologies into higher education based

Yang, Yun

462

Analysis and Research on the Thermal Properties of Energy-efficient Building Glass: A Case Study in PVB Laminated Glass  

E-Print Network (OSTI)

A new kind of PVB-laminated glass is introduced as an energy-efficient building glass. Based on tests and calculations of the shading coefficients of flat glass, LOW-E coated glass and PVB-laminated glass with different thickness, their effects...

Chen, Z.; Meng, Q.

2006-01-01T23:59:59.000Z

463

Five case studies of multifamily weatherization programs  

SciTech Connect

The multifamily case studies that are the subject of this report were conducted to provide a better understanding of the approach taken by program operators in weatherizing large buildings. Because of significant variations in building construction and energy systems across the country, five states were selected based on their high level of multifamily weatherization. This report summarizes findings from case studies conducted by multifamily weatherization operations in five cities. The case studies were conducted between January and November 1994. Each of the case studies involved extensive interviews with the staff of weatherization subgrantees conducting multifamily weatherization, the inspection of 4 to 12 buildings weatherized between 1991 and 1993, and the analysis of savings and costs. The case studies focused on innovative techniques which appear to work well.

Kinney, L; Wilson, T.; Lewis, G. [Synertech Systems Corp. (United States)] [Synertech Systems Corp. (United States); MacDonald, M. [Oak Ridge National Lab., TN (United States)] [Oak Ridge National Lab., TN (United States)

1997-12-31T23:59:59.000Z

464

Adjoint-Based Implicit Uncertainty Analysis for Figures of Merit in a Laser Inertial Fusion Engine  

SciTech Connect

A primary purpose of computational models is to inform design decisions and, in order to make those decisions reliably, the confidence in the results of such models must be estimated. Monte Carlo neutron transport models are common tools for reactor designers. These types of models contain several sources of uncertainty that propagate onto the model predictions. Two uncertainties worthy of note are (1) experimental and evaluation uncertainties of nuclear data that inform all neutron transport models and (2) statistical counting precision, which all results of a Monte Carlo codes contain. Adjoint-based implicit uncertainty analyses allow for the consideration of any number of uncertain input quantities and their effects upon the confidence of figures of merit with only a handful of forward and adjoint transport calculations. When considering a rich set of uncertain inputs, adjoint-based methods remain hundreds of times more computationally efficient than Direct Monte-Carlo methods. The LIFE (Laser Inertial Fusion Energy) engine is a concept being developed at Lawrence Livermore National Laboratory. Various options exist for the LIFE blanket, depending on the mission of the design. The depleted uranium hybrid LIFE blanket design strives to close the fission fuel cycle without enrichment or reprocessing, while simultaneously achieving high discharge burnups with reduced proliferation concerns. Neutron transport results that are central to the operation of the design are tritium production for fusion fuel, fission of fissile isotopes for energy multiplication, and production of fissile isotopes for sustained power. In previous work, explicit cross-sectional uncertainty analyses were performed for reaction rates related to the figures of merit for the depleted uranium hybrid LIFE blanket. Counting precision was also quantified for both the figures of merit themselves and the cross-sectional uncertainty estimates to gauge the validity of the analysis. All cross-sectional uncertainties were small (0.1-0.8%), bounded counting uncertainties, and were precise with regard to counting precision. Adjoint/importance distributions were generated for the same reaction rates. The current work leverages those adjoint distributions to transition from explicit sensitivities, in which the neutron flux is constrained, to implicit sensitivities, in which the neutron flux responds to input perturbations. This treatment vastly expands the set of data that contribute to uncertainties to produce larger, more physically accurate uncertainty estimates.

Seifried, J E; Fratoni, M; Kramer, K J; Latkowski, J F; Peterson, P F; Powers, J J; Taylor, J M

2010-12-03T23:59:59.000Z

465

Comparative analysis of market-based health delivery models in rural India  

E-Print Network (OSTI)

The rapid economic growth in India and accompanying demand for improved healthcare, particularly in rural populations, make a compelling case for global pharmaceutical companies to develop new business models to serve these ...

Yap, Nicole

2013-01-01T23:59:59.000Z

466

Thermo-fluid Aspect Analysis of Passive Cooling System Case Using Solar Chimney in the South Regions of Algeria  

Science Journals Connector (OSTI)

Abstract The purpose of this present work is related to thermo-fluid flow and energy performance aspect analysis of solar chimneys versus geometrical parameters and environmental sites. Governing equations are solved numerically using finite volume method. Adrar site located at the south western region of Algeria is chosen according to its important energy potential compared to other regions of Algeria. Obtained results are related to fluid flow temperature and velocity distributions along the chimney, the mass flow rate and air change per hour (ACH). A good agreement is obtained between our results and those of the literature.

Salah Larbi; Adel El Hella

2013-01-01T23:59:59.000Z

467

Emergy analysis of grain production systems on large-scale farms in the North China Plain based on LCA  

Science Journals Connector (OSTI)

Abstract Traditionally, primary grain production systems in China have been on a small scale and are associated with high costs and low labor productivity. Therefore, the substitution of small-scale farming with large-scale farming has been discussed in recent years. The North China Plain (NCP) is one of the primary grain production areas in China, and the winter wheat–summer maize double-cropping system dominates the region. Emergy evaluation based on life cycle assessment (LCA) was introduced in a farm case study to explore the ecological and economic effects of the wheat–maize double-cropping system on large-scale grain production compared with small-scale production. The results indicated that the emergy efficiency of maize production on the large-scale farm was 67.4–88.5% higher than that of common maize production systems, and the emergy efficiency of wheat production in the same farm decreased by 23.5–43.0% compared to other wheat production systems. The emergy sustainability index (ESI) of the double-cropping system was 64.0–84.5% lower than that reported by household farms. This is caused by large-scale farming requiring enormous emergy inputs from irrigation, fertilizers, and labor at the pre-sowing and growth stages of wheat production. Nevertheless, the scenario analysis results showed that the emergy efficiency and ESI of wheat production could be improved by 14.7–59.1% and 18.2–123.3%, respectively, using appropriate water, nutrient, and agronomic management measures. We found that the emergy efficiency of wheat production in this large-scale farm was 41.5% higher than in household farms in the same area if comprehensive improvement measures were applied. In conclusion, the ESI value of the double-cropping system in the NCP needs to be modified to increase the emergy efficiency of large-scale grain production farms. If this is accomplished, the large-scale farming pattern may be applicable for grain production in the NCP.

Xiaolong Wang; Yuanquan Chen; Peng Sui; Wangsheng Gao; Feng Qin; Jiansheng Zhang; Xia Wu

2014-01-01T23:59:59.000Z

468

EXERGY BASED METHOD FOR SUSTAINABLE ENERGY UTILIZATION ANALYSIS OF A NET SHAPE MANUFACTURING SYSTEM.  

E-Print Network (OSTI)

??The approach advocated in this work implements energy/exergy analysis and indirectly an irreversibility evaluation to a continuous manufacturing process involving discrete net shape production of… (more)

SANKARA, JAYASANKAR

2005-01-01T23:59:59.000Z

469

A Decision-Based Analysis of Compressed Air Usage Patterns in Automotive Manufacturing  

E-Print Network (OSTI)

Analysis of Compressed Air Usage Patterns in Automotivefor future compressed air usage. The Cost-of-Ownership andfuture compressed air usage. Environmental Value systems (

Yuan, Chris; Zhang, Teresa; Rangarajan, Arvind; Dornfeld, David; Ziemba, Bill; Whitbeck, Rod

2006-01-01T23:59:59.000Z

470

Feature Extraction of Gesture Recognition Based on Image Analysis by Using Matlab.  

E-Print Network (OSTI)

?? This thesis mainly focuses on the research of gesture extraction and finger segmentation in the gesture recognition. In this paper, we used image analysis… (more)

Chaofan, Hao

2014-01-01T23:59:59.000Z

471

Eigenvalue Analysis of a DFIG Based Wind Power System under Different Modes of Operations  

Science Journals Connector (OSTI)

This chapter discussed the various mode of operation of the Doubly Fed Induction Generator (DFIG) based wind farm system. The impact ... on the different modes of operation for the DFIG based wind generation syst...

Y. Mishra; S. Mishra; Fangxing Li; Z. Y. Dong

2010-01-01T23:59:59.000Z

472

Dynamic Fracture Conductivity—An Experimental Investigation Based on Factorial Analysis  

E-Print Network (OSTI)

This work is about fracture conductivity; how to measure and model it based on experimental data. It is also about how to determine the relative importance of the factors that affect its magnitude and how to predict its magnitude based...

Awoleke, Obadare O

2013-01-31T23:59:59.000Z

473

Exergetic and exergo-economic analysis of a turboprop engine: a case study for CT7-9C  

Science Journals Connector (OSTI)

The turboprop engine has played an important role in short haul commuter and military transport aircraft where high speed is not critical. It may provide the aviation sector with one of the most significant means of achieving reduced operating costs through reductions in fuel consumption. This paper deals with exergo-economic analysis of a modern turboprop engine (CT7-9C) with a free power turbine used for a medium-range twin-engine transport plane that was jointly developed as a regional airliner and military transport. The investigated main components of the engine are the compressor, the combustor, the gas generator, the power turbine and the exhaust. Exergetic parameters, along with exergo-economic parameters, have been calculated for each engine component.

Hakan Aydin; Onder Turan; Adnan Midilli; T. Hikmet Karakoc

2012-01-01T23:59:59.000Z

474

An assessment of energy balance from sugar-based ethanol for fuel-saving and climate policy - the case of an island economy  

Science Journals Connector (OSTI)

The study assesses the efficiency of sugar-based ethanol production in Mauritius using the net energy balance and energy ratio. The findings indicate a positive net energy balance. For every one unit of fossil fuel used, the system returns more than six times in terms of renewable energy from ethanol. The fuel savings and other economic benefits which may be accrued to Mauritius are discussed. The sensitivity analysis shows that the fossil energy consumed in the production of fertilisers and in the transportation of feedstock to factory represents the main components which influence efficiency indicators. Greening the supply chain may enhance the efficiency and sustainability of bio-ethanol production systems. Green strategies may include the use of organic fertilisers, clean technology, and sustainable transportation and land use. The efficiency indicators can also be used to guide the CDM for sugar-based ethanol project.

Riad Sultan; Abdel Khoodaruth

2013-01-01T23:59:59.000Z

475

Multi-wavelength analysis of high energy electrons in solar flares: a case study of August 20, 2002 flare  

E-Print Network (OSTI)

A multi-wavelength spatial and temporal analysis of solar high energy electrons is conducted using the August 20, 2002 flare of an unusually flat (gamma=1.8) hard X-ray spectrum. The flare is studied using RHESSI, Halpha, radio, TRACE, and MDI observations with advanced methods and techniques never previously applied in the solar flare context. A new method to account for X-ray Compton backscattering in the photosphere (photospheric albedo) has been used to deduce the primary X-ray flare spectra. The mean electron flux distribution has been analysed using both forward fitting and model independent inversion methods of spectral analysis. We show that the contribution of the photospheric albedo to the photon spectrum modifies the calculated mean electron flux distribution, mainly at energies below 100 keV. The positions of the Halpha emission and hard X-ray sources with respect to the current-free extrapolation of the MDI photospheric magnetic field and the characteristics of the radio emission provide evidence of the closed geometry of the magnetic field structure and the flare process in low altitude magnetic loops. In agreement with the predictions of some solar flare models, the hard X-ray sources are located on the external edges of the Halpha emission and show chromospheric plasma heated by the non-thermal electrons. The fast changes of Halpha intensities are located not only inside the hard X-ray sources, as expected if they are the signatures of the chromospheric response to the electron bombardment, but also away from them.

J. Kasparova; M. Karlicky; E. P. Kontar; R. A. Schwartz; B. R. Dennis

2005-08-30T23:59:59.000Z

476

GIS BASED ANALYSIS OF LANDCOVER CHANGES ARISING FROM COAL PRODUCTION WASTES IN ZONGULDAK  

E-Print Network (OSTI)

mining has been made since 1848 and, based on the records kept since 1865, 328 million tons pit run coal

H. Akç?n A; S. Karak? A; G. Büyüksalih A; M. Oruç A

477

Retail Market analysis in targeting sales based on Consumer Behaviour using Fuzzy Clustering - A Rule Based Mode  

E-Print Network (OSTI)

Product Bundling and offering products to customers is of critical importance in retail marketing. In general, product bundling and offering products to customers involves two main issues, namely identification of product taste according to demography and product evaluation and selection to increase sales. The former helps to identify, analyze and understand customer needs according to the demo-graphical characteristics and correspondingly transform them into a set of specifications and offerings for people. The latter, concerns with how to determine the best product strategy and offerings for the customer in helping the retail market to improve their sales. Existing research has focused only on identifying patterns for a particular dataset and for a particular setting. This work aims to develop an explicit decision support for the retailers to improve their product segmentation for different settings based on the people characteristics and thereby promoting sales by efficient knowledge discovery from the exi...

Bhanu, D

2009-01-01T23:59:59.000Z

478

Machine Learningâ??Based Differential Network Analysis: A Study of Stress-Responsive Transcriptomes in Arabidopsis  

Science Journals Connector (OSTI)

...ARTICLE Machine Learning-Based Differential...School of Plant Sciences...presents a machine learning-based method...led to the prediction of candidate...and human disease-relevant...promoter prediction evaluation...biology. Plant Cell 19...altered in disease via differential...rule-based machine learning on large-scale...

Chuang Ma; Mingming Xin; Kenneth A. Feldmann; Xiangfeng Wang

2014-02-11T23:59:59.000Z

479

Glycosylation Network Analysis Toolbox: a MATLAB-based environment for systems glycobiology  

Science Journals Connector (OSTI)

......Toolbox: a MATLAB-based environment...1Department of Chemical and Biological...user-extensible MATLAB-based toolbox...and dynamic simulation are also supported...biological processes including inflammation...describes a new MATLAB-based toolbox...visualization and simulation of glycosylation...GettingStarted.pdf document......

Gang Liu; Apurv Puri; Sriram Neelamegham

2013-02-01T23:59:59.000Z

480

MovieBase: a movie database for event detection and behavioral analysis  

Science Journals Connector (OSTI)

The overwhelming amount of multimedia entities shared over the web has given rise to the need for semantic identification and classification of these entities. Numerous research efforts have tackled this problem by developing advanced content analysis ... Keywords: YouTube, database, video annotation, video content analysis, video indexing and mining

Tat-Seng Chua; Sheng Tang; Remi Trichet; Hung Khoon Tan; Yan Song

2009-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "base case analysis" 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.


481

Sensitivity analysis based crack propagation criterion for compressible and (near) incompressible hyperelastic materials  

Science Journals Connector (OSTI)

Sensitivity analysis of an XFEM crack propagation model is developed for shape and material parameters, where the direct differentiation method is applied to large strain problems with hyperelastic neo-Hookean materials. The presence of level set functions ... Keywords: Finite strains, Fracture, Incompressibility, Sensitivity analysis, XFEM

Primo Šuštari?; Mariana R. R. Seabra; Jose M. A. Cesar De Sa; Toma Rodi?

2014-05-01T23:59:59.000Z

482

Color face recognition based on statistically orthogonal analysis of projection transforms  

Science Journals Connector (OSTI)

In this paper, we propose a novel color face feature extraction approach named statistically orthogonal analysis (SOA). It in turn calculates the projection transforms of the red, green and blue color component image sets by using the Fisher criterion, ... Keywords: color face recognition, feature extraction, projection transform, statistically orthogonal analysis (SOA)

Jiangyue Man; Xiaoyuan Jing; Qian Liu; Yongfang Yao; Kun Li; Jingyu Yang

2011-12-01T23:59:59.000Z

483

Dependency-Based Semantic Parsing for Concept-Level Text Analysis  

Science Journals Connector (OSTI)

Concept-level text analysis is superior to word-level analysis as it preserves the semantics associated with multi-word expressions. It offers a better understanding of text and helps to significantly increase the accuracy of many text mining tasks. ...

Soujanya Poria, Basant Agarwal, Alexander Gelbukh, Amir Hussain, Newton Howard

2014-04-01T23:59:59.000Z

484

An Empirical Framework for Comparing Effectiveness of Testing and Property-Based Formal Analysis  

E-Print Network (OSTI)

and practise of formal analysis and on the other hand, by a need for improved quality assurance techniques. 1. INTRODUCTION Testing and formal analysis are two complementary qual- ity assurance techniques-condition, a loop invariant, a class representation invariant, an interface us- age rule, or a temporal property

Bradbury, Jeremy S.

485

An Empirical Framework for Comparing Effectiveness of Testing and Property-Based Formal Analysis  

E-Print Network (OSTI)

in the theory and practise of formal analysis and on the other hand, by a need for improved quality assurance. 1. INTRODUCTION Testing and formal analysis are two complementary qual- ity assurance techniques of a method pre-condition, a loop invariant, a class representation invariant, an interface us- age rule

Cordy, James R.

486

Williston Basin: An analysis of salt drilling techniques for brine-based drilling-fluid systems  

SciTech Connect

Williston Basin salt intervals, ranging in depth from 5,000 to 12,500 ft (1525 to 3810 m), have been responsible for widespread casing collapse because of the plastic movement of evaporites and the subsequent point loading of casing. This phenomenon is attributable to poor cement jobs across excessively eroded salt sections. A 2-year study led to the realization that this erosion is a function of not only salt dissolution but also the mechanical action of turbulent flow in the wellbore. A laminar flow regime can be realized and salt enlargement limited by careful control of annular flow rate, jet velocity, and drilling-fluid rheology.

Stash, S.M.; Jones, M.E.

1988-03-01T23:59:59.000Z

487

Combining empirical and theory-based land-use modelling approaches to assess economic potential of biofuel production avoiding iLUC: Argentina as a case study  

Science Journals Connector (OSTI)

Abstract In this paper, a land-use modelling framework is presented combining empirical and theory-based modelling approaches to determine economic potential of biofuel production avoiding indirect land-use changes (iLUC) resulting from land competition with other functions. The empirical approach explores future developments in food and feed production to determine land availability and technical potential of biofuel production. The theory-based approach assesses the economic performance of biofuel crops on the surplus land in comparison with other production systems and determines the economic potential of biofuel production. The framework is demonstrated for a case study in Argentina to determine the development of biofuel potential from soy and switchgrass up to 2030. Two scenarios were considered regarding future developments of productivity in agriculture and livestock production. It was found that under a scenario reflecting a continuation of current trends, no surplus land is expected to become available. Nevertheless, the potential for soybean biodiesel is expected to keep increasing up to 103 PJ in 2030, due to the existence of a developed agro-industrial sector jointly producing feed and biodiesel. In case large technological developments occur, 32 Mha could become available in 2030, which would allow for a technical potential of 472 PJ soybean biodiesel and 1445 PJ switchgrass bioethanol. According to the economic assessment, an economic potential of 368 PJ of soy biodiesel and 1.1 EJ switchgrass bioethanol could be attained, at a feedstock production cost of 100–155 US$/ton and 20–45 US$/ton, respectively. The region of southwest Buenos Aires and La Pampa provinces appeared to be particularly promising for switchgrass. The ability of jointly assessing future developments in land availability, technical and economic potential of biofuel production avoiding iLUC and spatial distribution of viable locations for growing biofuel crops means that the proposed framework is a step forward in assessing the potential for biofuel production that is both economically viable and sustainably produced.

V. Diogo; F. van der Hilst; J. van Eijck; J.A. Verstegen; J. Hilbert; S. Carballo; J. Volante; A. Faaij

2014-01-01T23:59:59.000Z

488

Evaluation of food waste disposal options by LCC analysis from the perspective of global warming: Jungnang case, South Korea  

SciTech Connect

Highlights: > Various food waste disposal options were evaluated from the perspective of global warming. > Costs of the options were compared by the methodology of life cycle assessment and life cycle cost analysis. > Carbon price and valuable by-products were used for analyzing environmental credits. > The benefit-cost ratio of wet feeding scenario was the highest. - Abstract: The costs associated with eight food waste disposal options, dry feeding, wet feeding, composting, anaerobic digestion, co-digestion with sewage sludge, food waste disposer, incineration, and landfilling, were evaluated in the perspective of global warming and energy and/or resource recovery. An expanded system boundary was employed to compare by-products. Life cycle cost was analyzed through the entire disposal process, which included discharge, separate collection, transportation, treatment, and final disposal stages, all of which were included in the system boundary. Costs and benefits were estimated by an avoided impact. Environmental benefits of each system per 1 tonne of food waste management were estimated using carbon prices resulting from CO{sub 2} reduction by avoided impact, as well as the prices of by-products such as animal feed, compost, and electricity. We found that the cost of landfilling was the lowest, followed by co-digestion. The benefits of wet feeding systems were the highest and landfilling the lowest.

Kim, Mi-Hyung, E-mail: mhkim9@snu.ac.kr [Department of Environmental Planning, Graduate School of Environmental Studies, Seoul National University, San 56-1, Sillim-Dong, Gwanak-Gu, Seoul 151-742 (Korea, Republic of); Song, Yul-Eum, E-mail: yesong0724@dongguk.edu [Department of Philosophy, Dongguk University, Pil-Dong 3-Ga, Jung-Gu, Seoul 100-715 (Korea, Republic of); Department of Life Science, Dongguk University, Pil-Dong 3-Ga, Jung-Gu, Seoul 100-715 (Korea, Republic of); Song, Han-Byul, E-mail: kuackyang@ssu.ac.kr [Department of Chemical Engineering, Soongsil University, Sangdo-Ro 369, Dongjak-Gu, Seoul 156-743 (Korea, Republic of); Kim, Jung-Wk, E-mail: kimjw@snu.ac.kr [Department of Environmental Planning, Graduate School of Environmental Studies, Seoul National University, San 56-1, Sillim-Dong, Gwanak-Gu, Seoul 151-742 (Korea, Republic of); Hwang, Sun-Jin, E-mail: sjhwang@khu.ac.kr [Department of Environmental Science and Engineering, Center for Environmental Studies, Kyung Hee University, Seocheon-Dong, Giheung-Gu, Yongin-Si, Gyeonggi-Do 446-701 (Korea, Republic of)

2011-09-15T23:59:59.000Z

489

Failure analysis of reinforced polyurethane foam-based LNG insulation structure using damage-coupled finite element analysis  

Science Journals Connector (OSTI)

Abstract The primary aim of this study was to develop a unified anisotropic elasto-viscoplastic-damage model that describes the material nonlinear behavior and damage/crack growth of a reinforced polyurethane foam-based liquefied natural gas carrier insulation system. A Bodner–Partom unified elasto-viscoplastic model independent of the yield surface and loading history was expanded to an anisotropic unified model. To predict the damage growth and the crack initiation/growth of reinforced polyurethane foam, a Bodner–Chan damage model was applied to the proposed unified elasto-viscoplastic-damage model. The developed mechanical model was implicitly formulated and implemented into an ABAQUS user-defined material subroutine. To validate the proposed numerical method, the simulation results were compared with the results of a series of static uniaxial tests and dynamic cyclic tests conducted on the reinforced polyurethane foam and the liquefied natural gas carrier insulation system, respectively.

Chi-Seung Lee; Jae-Myung Lee

2014-01-01T23:59:59.000Z

490

Economic–environmental analysis of handling biogas from sewage sludge digesters in \\{WWTPs\\} (wastewater treatment plants) for energy recovery: Case study of Bekkelaget WWTP in Oslo (Norway)  

Science Journals Connector (OSTI)

Abstract This paper outlines a methodology for a systematic economic–environmental analysis of realistic and realisable options for recovering and utilising energy from biogas produced in sewage sludge digesters in \\{WWTPs\\} (wastewater treatment plants). Heat, electricity and transport fuel can be produced from biogas, consumed in-plant or even sold to external end-users. The paper initially considers global warming as the environmental impact of concern, but later also stresses on the necessity of avoiding problem shifting by factoring in other environmental impact categories as well. The methodology is subsequently applied to the Bekkelaget WWTP in Oslo (Norway). Five different options for handling biogas are considered, in addition to the status quo – the business-as-usual in year-2012, and a baseline case, where it is assumed that all biogas generated is flared completely and not utilised for energy recovery of any kind. Seven different cost scenarios – for electricity, natural gas, wood pellets, bio-methane and diesel – are constructed. This gives a total of 49 combinations, for each of which the net costs and net environmental impacts (global warming, eutrophication and acidification) are determined for the 10-year period 2012–2021. The changes (in percentages) with respect to the corresponding values for the baseline case, are recorded; suitable weighting factors are considered after interaction with experts and personnel associated with the plant, and the options are evaluated using this double-bottom-line approach (economic and environmental).

G. Venkatesh; Rashid Abdi Elmi

2013-01-01T23:59:59.000Z

491

Energy and economic analysis of geothermal–solar trigeneration systems: A case study for a hotel building in Ischia  

Science Journals Connector (OSTI)

Abstract This paper presents the design, simulation and optimisation of a small trigeneration plant supplied by geothermal and solar energies. Different technologies are implemented in a dynamic simulation model purposely developed for research scope: a 6 kWe micro Organic Rankine Cycle (ORC); a 30 kWf single stage H2O/LiBr absorption chiller; a geothermal well; a solar field obtained by new prototypal flat-plate evacuated solar collectors. The ORC is supplied by heat obtained by a geothermal well in which geothermal brine is about at 95 °C. In order to improve system performance, additional heat is provided by solar energy obtained through a 25 m2 solar field. Diathermic oil (up to 130 °C) is adopted as working fluid in order to supply heat to the ORC evaporator. A suitable oil storage tank is modelled in order to mitigate the temperature fluctuations due to the variability of solar energy availability. The output power of the ORC depends on the availability of solar energy. The absorption chiller is switched-on in summer time and it is fed by geothermal energy only. This simulation model is implemented in TRNSYS environment. The ORC is modelled by zero-dimensional energy and mass balances implemented in Engineering Equation Solver (EES). A case study is developed in order to test the energy and economic performance of this innovative micro-trigeneration plant. In particular, the above mentioned model is applied to the Regina Isabella hotel in Ischia (Naples, South Italy), famous for its geothermal sources. Currently, such hotel is already equipped by a geothermal system (by several hot water wells) for thermal cares, domestic hot water production and space heating. By TRNSYS the optimisation of the system design parameters and the calculation of the thermo-economic conditions were performed. The system showed excellent energy performance indexes. In fact, the average yearly efficiency of the solar thermal collectors is close to 60%, whereas the average yearly ORC electric efficiency is about 6%, which is a good achievement considering the system driving temperature. Results also show that the system performance is more dependent on the availability of the geothermal energy than the solar one. From the economic point of view, good results are also obtained. In fact, in the worst operating conditions the Simple Pay Back Period is 7.6 years, decreasing to 2.5 years in the most convenient considered scenario (public funding and full utilisation of the produced thermal energy).

Annamaria Buonomano; Francesco Calise; Adolfo Palombo; Maria Vicidomini

2015-01-01T23:59:59.000Z

492

Core-based integrated sedimentologic, stratigraphic, and geochemical analysis of the oil shale bearing Green River Formation, Uinta Basin, Utah  

NLE Websites -- All DOE Office Websites (Extended Search)

DOE Award No.: DE-FE0001243 DOE Award No.: DE-FE0001243 Topical Report CORE-BASED INTEGRATED SEDIMENTOLOGIC, STRATIGRAPHIC, AND GEOCHEMICAL ANALYSIS OF THE OIL SHALE BEARING GREEN RIVER FORMATION, UINTA BASIN, UTAH Submitted by: University of Utah Institute for Clean and Secure Energy 155 South 1452 East, Room 380 Salt Lake City, UT 84112 Prepared for: United States Department of Energy National Energy Technology Laboratory April 2011 Oil & Natural Gas Technology Office of Fossil Energy Core-based integrated sedimentologic, stratigraphic, and geochemical analysis of the oil shale bearing Green River Formation, Uinta Basin, Utah Topical Report Reporting Period: October 31, 2009 through March 31, 2011 Authors: Lauren P. Birgenheier, Energy and Geoscience Insitute, University of Utah

493

Stability analysis of NbTi-Ta-based high field conductor cooled by pool boiling below 4 K  

SciTech Connect

Stability analysis has been performed for cabled NbTi-Ta-based superconductors intended for the high field (12 T) toroidal field coils for a large scale tokamak device such as ETF. Ternary NbTi-Ta was selected as the superconductor because of its superior critical current density at high field as compared to the binary alloy NbTi. The operating temperature was chosen to be 2.5 K or below to optimize the performance of the superconductor. A cabled conductor was selected to minimize the pulsed field losses. The conductor is cooled by pool boiling in a subcooled (approx. 2.5 K, 0.25 atm) bath, or in a superfluid helium (He-II) bath (approx. 1.8 K, 0.02 atm). The analysis was based on numerically simulating the evolution of a normal zone in the conductor. Appropriate superconductor properties and heat transfer characteristics were utilized in the simulation.

Chen, W.Y.; Alcorn, J.S.; Hsu, Y.H.; Purcell, J.R.

1980-09-01T23:59:59.000Z

494

Entry Dispersion Analysis for the HAYABUSA Spacecraft using Ground-Based Optical Observation  

Science Journals Connector (OSTI)

......backup plans for predicting the landing location were prepared. This...trouble. We also evaluated the landing dispersion of HAYABUSA only...in 1999 to collect dust from comet Wild-2 Desai et al. (2008...view). Figure 9 depicts the landing dispersion ellipse for cases......

Tomohiro Yamaguchi; Makoto Yoshikawa; Masafumi Yagi; David J. Tholen

2011-10-25T23:59:59.000Z

495

Segmenting consumers based on how they spend a tax rebate: An analysis of the Australian stimulus payment  

Science Journals Connector (OSTI)

Tax rebates are instruments for stimulating consumer spending during recessions. Previous research assessed whether consumers use tax rebates for saving or, alternatively, purchasing goods and services. These studies concentrated on aggregate estimations. Based on the saving motive hierarchy suggested in the economic psychology literature, other theories on saving motives, and acquisition pattern analysis, we propose that consumers can be segmented by the purposes for which they use a tax rebate. We apply Latent Class Analysis to segment consumers in Australia according to their allocation of the 2009 government rebate, which was pai