Sample records for virtually unchanged reliability

  1. Final Report for the Virtual Reliability Realization System LDRD

    SciTech Connect (OSTI)

    DELLIN, THEODORE A.; HENDERSON, CHRISTOPHER L.; O'TOOLE, EDWARD J.

    2000-12-01T23:59:59.000Z

    Current approaches to reliability are not adequate to keep pace with the need for faster, better and cheaper products and systems. This is especially true in high consequence of failure applications. The original proposal for the LDRD was to look at this challenge and see if there was a new paradigm that could make reliability predictions, along with a quantitative estimate of the risk in that prediction, in a way that was faster, better and cheaper. Such an approach would be based on the underlying science models that are the backbone of reliability predictions. The new paradigm would be implemented in two software tools: the Virtual Reliability Realization System (VRRS) and the Reliability Expert System (REX). The three-year LDRD was funded at a reduced level for the first year ($120K vs. $250K) and not renewed. Because of the reduced funding, we concentrated on the initial development of the expertise system. We developed an interactive semiconductor calculation tool needed for reliability analyses. We also were able to generate a basic functional system using Microsoft Siteserver Commerce Edition and Microsoft Sequel Server. The base system has the capability to store Office documents from multiple authors, and has the ability to track and charge for usage. The full outline of the knowledge model has been incorporated as well as examples of various types of content.

  2. Residential heating oil prices virtually unchanged

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil price decreasesheating oil3,heating4

  3. Residential heating oil prices virtually unchanged

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil price decreasesheating oil3,heating40,

  4. Residential heating oil prices virtually unchanged

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil price decreasesheating oil3,heating40,5,

  5. Residential heating oil prices virtually unchanged

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil price decreasesheating oil3,heating40,5,4

  6. Residential heating oil prices virtually unchanged

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil price decreasesheating

  7. Residential heating oil prices virtually unchanged

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil price decreasesheatingheating oil prices

  8. Analyzing reliability of virtual machine instances with dynamic pricing in the public cloud

    SciTech Connect (OSTI)

    Lim, Seung-Hwan [ORNL; Thakur, Gautam [ORNL; Horey, James L [ORNL

    2014-01-01T23:59:59.000Z

    This study presents reliability analysis of virtual machine instances in public cloud environments in the face of dynamic pricing. Different from traditional fixed pricing, dynamic pricing allows price to dynamically fluctuate over arbitrary period of time according to external factors such as supply and demand, excess capacity, etc. This pricing option introduces a new type of fault: virtual machine instances may be unexpectedly terminated due to conflicts in the original bid price and the current offered price. This new class of fault under dynamic pricing may be more dominant than traditional faults in cloud computing environments, where resource availability associated with traditional faults is often above 99.9%. To address and understand this new type of fault, we translated two classic reliability metrics, mean time between failures and availability, to the Amazon Web Services spot market using historical price data. We also validated our findings by submitting actual bids in the spot market. We found that overall, our historical analysis and experimental validation lined up well. Based upon these experimental results, we also provided suggestions and techniques to maximize overall reliability of virtual machine instances under dynamic pricing.

  9. Virtual Exhibits

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

    Virtual Exhibits Inside the Museum Exhibitions Norris Bradbury Museum Lobby Defense Gallery Research Gallery History Gallery TechLab Virtual Exhibits invisible utility element...

  10. Virtually simulating the next generation of clean energy technologies: NETL's AVESTAR Center is dedicated to the safe, reliable and efficient operation of advanced energy plants with carbon capture

    SciTech Connect (OSTI)

    Zitney, S.

    2012-01-01T23:59:59.000Z

    Imagine using a real-time virtual simulator to learn to fly a space shuttle or rebuild your car's transmission without touching a piece of equipment or getting your hands dirty. Now, apply this concept to learning how to operate and control a state-of-the-art, electricity-producing power plant capable of carbon dioxide (CO{sub 2}) capture. That's what the National Energy Technology Laboratory's (NETL) Advanced Virtual Energy Simulation Training and Research (AVESTAR) Center (www.netl.doe.gov/avestar) is designed to do. Established as part of the Department of Energy's (DOE) initiative to advance new clean energy technology for power generation, the AVESTAR Center focuses primarily on providing simulation-based training for process engineers and energy plant operators, starting with the deployment of a first-of-a-kind operator training simulator for an integrated gasification combined cycle (IGCC) power plant with CO{sub 2} capture. The IGCC dynamic simulator builds on, and reaches beyond, conventional power plant simulators to merge, for the first time, a 'gasification with CO{sub 2} capture' process simulator with a 'combined-cycle' power simulator. Based on Invensys Operations Management's SimSci-Esscor DYNSIM software, the high-fidelity dynamic simulator provides realistic training on IGCC plant operations, including normal and faulted operations, as well as plant start-up, shutdown and power demand load changes. The highly flexible simulator also allows for testing of different types of fuel sources, such as petcoke and biomass, as well as co-firing fuel mixtures. The IGCC dynamic simulator is available at AVESTAR's two locations, NETL (Figure 1) and West Virginia University's National Research Center for Coal and Energy (www.nrcce.wvu.edu), both in Morgantown, W.Va. By offering a comprehensive IGCC training program, AVESTAR aims to develop a workforce well prepared to operate, control and manage commercial-scale gasification-based power plants with CO{sub 2} capture. The facility and simulator at West Virginia University promotes NETL's outreach mission by offering hands-on simulator training and education to researchers and university students.

  11. IEEE I&CPS Conf., May 7-11, San Antonio, Texas, pp. 147-152 Reliability of Lightning Resistant

    E-Print Network [OSTI]

    Tolbert, Leon M.

    IEEE I&CPS Conf., May 7-11, San Antonio, Texas, pp. 147-152 Reliability of Lightning Resistant essentially remained unchanged in the last 32 years which allows a meaningful comparison of reliability trends

  12. North American Electric Reliability Corporation (NERC): Reliability...

    Office of Environmental Management (EM)

    (NERC): Reliability Considerations from the Integration of Smart Grid North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of...

  13. Electricity Reliability

    E-Print Network [OSTI]

    electric power equipment with more energy efficiency and higher capacity than today's systems of modernizing the electric grid to meet the nations's need for reliable, electric power, enhancing security continues to increase within the electricity infrastructure. DOE is conducting research, development

  14. Virtual Electrodes Mechanisms Predictions with a Current-Lifted Monodomain Model

    E-Print Network [OSTI]

    Boyer, Edmond

    Virtual Electrodes Mechanisms Predictions with a Current-Lifted Monodomain Model Yves Coudi`ere1 cost. The source term is derived from a lifting principle ap- plied to the resolution, and an excitation part, that remains unchanged. Equivalently, we make a lifting of the stimula- tion functions

  15. Virtual impactor

    DOE Patents [OSTI]

    Yeh, H.C.; Chen, B.T.; Cheng, Y.S.; Newton, G.J.

    1988-08-30T23:59:59.000Z

    A virtual impactor is described having improved efficiency and low wall losses in which a core of clean air is inserted into the aerosol flow while aerosol flow is maintained adjacent to the inner wall surfaces of the focusing portion of the impactor. The flow rate of the core and the length of the throat of the impactor's collection probe, as well as the dimensional relationships of other components of the impactor adjacent the separation region of the impactor, are selected to optimize separation efficiency. 4 figs.

  16. Virtual button interface

    DOE Patents [OSTI]

    Jones, Jake S. (Albuquerque, NM)

    1999-01-01T23:59:59.000Z

    An apparatus and method of issuing commands to a computer by a user interfacing with a virtual reality environment. To issue a command, the user directs gaze at a virtual button within the virtual reality environment, causing a perceptible change in the virtual button, which then sends a command corresponding to the virtual button to the computer, optionally after a confirming action is performed by the user, such as depressing a thumb switch.

  17. Virtual button interface

    DOE Patents [OSTI]

    Jones, J.S.

    1999-01-12T23:59:59.000Z

    An apparatus and method of issuing commands to a computer by a user interfacing with a virtual reality environment are disclosed. To issue a command, the user directs gaze at a virtual button within the virtual reality environment, causing a perceptible change in the virtual button, which then sends a command corresponding to the virtual button to the computer, optionally after a confirming action is performed by the user, such as depressing a thumb switch. 4 figs.

  18. VIRTUAL REALITYVIRTUAL REALITY Introduction

    E-Print Network [OSTI]

    Petriu, Emil M.

    Animation Script Sensor Data Fusion & Interpretation Avatar (of a human or of a real object) VIRTUAL SCENE;HUMAN PERCEPTION OF REALITY REAL WORLD / ENVIRONMENT HUMAN (sentient living animal able of sensible Is Virtual Reality? -A Web-Based Introduction, by Jerry Isdale #12;Virtual Environments allow humans

  19. Reliability-Centered Maintenance

    Broader source: Energy.gov [DOE]

    Reliability-centered maintenance leverages the same practices and technologies of predictive maintenance.

  20. Residential propane price is unchanged

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil pricepropane price05,

  1. Interactive Virtual Environments Introduction

    E-Print Network [OSTI]

    Petriu, Emil M.

    sensor data or by animation scripts. Human users can interact and directly manipulate objects within Reality Interactive Virtual Reality Virtualized Reality Augmented Reality #12;HUMAN PERCEPTION OF REALITY REAL WORLD / ENVIRONMENT HUMAN (sentient living animal able of sensible reasoning) #12;Real

  2. Virtual and super - virtual refraction method: Application to synthetic data and 2012 of Karangsambung survey data

    SciTech Connect (OSTI)

    Nugraha, Andri Dian [Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institute of Technology Bandung, Bandung, 40132 (Indonesia)] [Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institute of Technology Bandung, Bandung, 40132 (Indonesia); Adisatrio, Philipus Ronnie [Geophysical Engineering Department, Faculty of Mining and Petroleum Engineering, Institute of Technology Bandung, Jl. Ganesha No. 10 Bandung, 40132 (Indonesia)] [Geophysical Engineering Department, Faculty of Mining and Petroleum Engineering, Institute of Technology Bandung, Jl. Ganesha No. 10 Bandung, 40132 (Indonesia)

    2013-09-09T23:59:59.000Z

    Seismic refraction survey is one of geophysical method useful for imaging earth interior, definitely for imaging near surface. One of the common problems in seismic refraction survey is weak amplitude due to attenuations at far offset. This phenomenon will make it difficult to pick first refraction arrival, hence make it challenging to produce the near surface image. Seismic interferometry is a new technique to manipulate seismic trace for obtaining Green's function from a pair of receiver. One of its uses is for improving first refraction arrival quality at far offset. This research shows that we could estimate physical properties such as seismic velocity and thickness from virtual refraction processing. Also, virtual refraction could enhance the far offset signal amplitude since there is stacking procedure involved in it. Our results show super - virtual refraction processing produces seismic image which has higher signal-to-noise ratio than its raw seismic image. In the end, the numbers of reliable first arrival picks are also increased.

  3. Power electronics reliability analysis.

    SciTech Connect (OSTI)

    Smith, Mark A.; Atcitty, Stanley

    2009-12-01T23:59:59.000Z

    This report provides the DOE and industry with a general process for analyzing power electronics reliability. The analysis can help with understanding the main causes of failures, downtime, and cost and how to reduce them. One approach is to collect field maintenance data and use it directly to calculate reliability metrics related to each cause. Another approach is to model the functional structure of the equipment using a fault tree to derive system reliability from component reliability. Analysis of a fictitious device demonstrates the latter process. Optimization can use the resulting baseline model to decide how to improve reliability and/or lower costs. It is recommended that both electric utilities and equipment manufacturers make provisions to collect and share data in order to lay the groundwork for improving reliability into the future. Reliability analysis helps guide reliability improvements in hardware and software technology including condition monitoring and prognostics and health management.

  4. Human Reliability Program Overview

    SciTech Connect (OSTI)

    Bodin, Michael

    2012-09-25T23:59:59.000Z

    This presentation covers the high points of the Human Reliability Program, including certification/decertification, critical positions, due process, organizational structure, program components, personnel security, an overview of the US DOE reliability program, retirees and academia, and security program integration.

  5. Designing a Virtual Manikin Animation Framework Aimed at Virtual Prototyping.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - of available new scientific techniques to animate Virtual Humans, in a new control scheme that better answersDesigning a Virtual Manikin Animation Framework Aimed at Virtual Prototyping. Antoine Rennuit1, 2, and analyse human behaviour in the product's environment (for maintenance, ergonomics...), thanks to Virtual

  6. CONSTRUCTING VIRTUAL HUMAN LIFE SIMULATIONS

    E-Print Network [OSTI]

    Kallmann, Marcelo

    , Virtual Environments, Behavioral Animation, Object Interaction, Python. 1. INTRODUCTION Virtual humanCONSTRUCTING VIRTUAL HUMAN LIFE SIMULATIONS Marcelo Kallmann, Etienne de Sevin and Daniel Thalmann human life simulations. Our main goal is to have virtual human actors living and working autonomously

  7. The inline virtual impactor

    E-Print Network [OSTI]

    Seshadri, Satyanarayanan

    2009-05-15T23:59:59.000Z

    A circumferential slot In-line Virtual Impactor (IVI) has been designed using Computational Fluid Dynamics (CFD) simulation tools and experimentally characterized using monodispersed liquid aerosols to validate simulation results. The base design...

  8. Jefferson Lab Virtual Tour

    SciTech Connect (OSTI)

    None

    2013-07-13T23:59:59.000Z

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  9. Jefferson Lab Virtual Tour

    ScienceCinema (OSTI)

    None

    2014-05-22T23:59:59.000Z

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  10. Medical Aspects of Reliability

    SciTech Connect (OSTI)

    Atencio, Julian J.

    2014-05-05T23:59:59.000Z

    This presentation covers the medical evaluation as part of a human reliability program, particularly the various medical qualifications and potential disqualifiers.

  11. Lifetime and Reliability

    Broader source: Energy.gov [DOE]

    A DOE Solid-State Lighting Program technology fact sheet on lifetime, reliability, and failure as related to LED-based products.

  12. Virtual data in CMS production

    SciTech Connect (OSTI)

    Arbree, A. et al.

    2004-08-26T23:59:59.000Z

    Initial applications of the GriPhyN Chimera Virtual Data System have been performed within the context of CMS Production of Monte Carlo Simulated Data. The GriPhyN Chimera system consists of four primary components: (1) a Virtual Data Language, which is used to describe virtual data products, (2) a Virtual Data Catalog, which is used to store virtual data entries, (3) an Abstract Planner, which resolves all dependencies of a particular virtual data product and forms a location and existence independent plan, (4) a Concrete Planner, which maps an abstract, logical plan onto concrete, physical grid resources accounting for staging in/out files and publishing results to a replica location service. A CMS Workflow Planner, MCRunJob, is used to generate virtual data products using the Virtual Data Language. Subsequently, a prototype workflow manager, known as WorkRunner, is used to schedule the instantiation of virtual data products across a grid.

  13. Hawaii electric system reliability.

    SciTech Connect (OSTI)

    Silva Monroy, Cesar Augusto; Loose, Verne William

    2012-09-01T23:59:59.000Z

    This report addresses Hawaii electric system reliability issues; greater emphasis is placed on short-term reliability but resource adequacy is reviewed in reference to electric consumers' views of reliability %E2%80%9Cworth%E2%80%9D and the reserve capacity required to deliver that value. The report begins with a description of the Hawaii electric system to the extent permitted by publicly available data. Electrical engineering literature in the area of electric reliability is researched and briefly reviewed. North American Electric Reliability Corporation standards and measures for generation and transmission are reviewed and identified as to their appropriateness for various portions of the electric grid and for application in Hawaii. Analysis of frequency data supplied by the State of Hawaii Public Utilities Commission is presented together with comparison and contrast of performance of each of the systems for two years, 2010 and 2011. Literature tracing the development of reliability economics is reviewed and referenced. A method is explained for integrating system cost with outage cost to determine the optimal resource adequacy given customers' views of the value contributed by reliable electric supply. The report concludes with findings and recommendations for reliability in the State of Hawaii.

  14. Medical Device Reliability BIOMATERIALS

    E-Print Network [OSTI]

    NEMI Medical Electronics team to address short- and long-term reliability issues with medical devices. OurMedical Device Reliability BIOMATERIALS Our goal is to provide medical device manufacturers, and consistency of active implantable medical devices. These devices, including pacemakers, cardiac defibrillators

  15. ATLAS Virtual Visits

    E-Print Network [OSTI]

    Goldfarb, Steven; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    ATLAS Virtual Visits is a project initiated in 2011 for the Education & Outreach program of the ATLAS Experiment at CERN. Its goal is to promote public appreciation of the LHC physics program and particle physics, in general, through direct dialogue between ATLAS physicists and remote audiences. A Virtual Visit is an IP-based videoconference, coupled with a public webcast and video recording, between ATLAS physicists and remote locations around the world, that typically include high school or university classrooms, Masterclasses, science fairs, or other special events, usually hosted by collaboration members. Over the past two years, more than 10,000 people, from all of the world’s continents, have actively participated in ATLAS Virtual Visits, with many more enjoying the experience from the publicly available webcasts and recordings. We present an overview of our experience and discuss potential development for the future.

  16. High efficiency virtual impactor

    DOE Patents [OSTI]

    Loo, B.W.

    1980-03-27T23:59:59.000Z

    Environmental monitoring of atmospheric air is facilitated by a single stage virtual impactor for separating an inlet flow (Q/sub 0/) having particulate contaminants into a coarse particle flow (Q/sub 1/) and a fine particle flow (Q/sub 2/) to enable collection of such particles on different filters for separate analysis. An inlet particle acceleration nozzle and coarse particle collection probe member having a virtual impaction opening are aligned along a single axis and spaced apart to define a flow separation region at which the fine particle flow (Q/sub 2/) is drawn radially outward into a chamber while the coarse particle flow (Q/sub 1/) enters the virtual impaction opening.

  17. Online Games, Virtual Worlds, and Social Networks

    E-Print Network [OSTI]

    Hemmers, Oliver

    JOUR 447: Online Games, Virtual Worlds, and Social Networks Virtual Island Making #12;One element in the look and design of the virtual islands. JOUR 447: Online Games, Virtual Worlds, and Social Networks

  18. VirtualPower: Coordinated Power Management in Virtualized Enterprise Systems

    E-Print Network [OSTI]

    Yang, Junfeng

    VirtualPower: Coordinated Power Management in Virtualized Enterprise Systems Ripal Nathuji CERCS Institute of Technology Atlanta, GA 30032 schwan@cc.gatech.edu ABSTRACT Power management has become. This paper explores how to inte- grate power management mechanisms and policies with the virtualization

  19. Photovoltaic system reliability

    SciTech Connect (OSTI)

    Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

    1997-10-01T23:59:59.000Z

    This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

  20. Reliable solar: powering communities

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently ApprovedReliability Technology earns award ReliabilityReliable

  1. Reliability and Safety

    Broader source: Energy.gov [DOE]

    DOE solar reliability and safety research and development (R&D) focuses on testing photovoltaic (PV) modules, inverters, and systems for long-term performance, and helping investors, consumers,...

  2. Reliability Standards Owner

    Broader source: Energy.gov [DOE]

    This position is located in the Internal Operations and Asset Management group of Planning and Asset Management (TP). A successful candidate in this position will serve as the Reliability Standards...

  3. Virtual Gateway Network Documentation

    E-Print Network [OSTI]

    Segall, Adrian

    Virtual Gateway Network Documentation Composed By: Stiven Andre Nikolai Gukov #12;Table of contents.3) VGNET as a network manager 2) VGNET explained 2.1) One PC with multiple Internet access points. 2 both routers. 1.3) VGNET as a network manager Let's look at figure 3 again. The perfect scenario we may

  4. Gearbox Reliability Collaborative Update (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.

    2013-10-01T23:59:59.000Z

    This presentation was given at the Sandia Reliability Workshop in August 2013 and provides information on current statistics, a status update, next steps, and other reliability research and development activities related to the Gearbox Reliability Collaborative.

  5. Sandia Energy - PV Systems Reliability

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

    Systems Reliability Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics PV Systems Reliability PV Systems ReliabilityCoryne Tasca2015-05-08T03:40:54+00:00...

  6. Photovoltaic module reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. (ed.)

    1990-01-01T23:59:59.000Z

    The paper and presentations compiled in this volume form the Proceedings of the fourth in a series of Workshops sponsored by Solar Energy Research Institute (SERI/DOE) under the general theme of photovoltaic module reliability during the period 1986--1990. The reliability Photo Voltaic (PV) modules/systems is exceedingly important along with the initial cost and efficiency of modules if the PV technology has to make a major impact in the power generation market, and for it to compete with the conventional electricity producing technologies. The reliability of photovoltaic modules has progressed significantly in the last few years as evidenced by warranties available on commercial modules of as long as 12 years. However, there is still need for substantial research and testing required to improve module field reliability to levels of 30 years or more. Several small groups of researchers are involved in this research, development, and monitoring activity around the world. In the US, PV manufacturers, DOE laboratories, electric utilities and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in this field were brought together under SERI/DOE sponsorship to exchange the technical knowledge and field experience as related to current information in this important field. The papers presented here reflect this effort.

  7. ISSAT 2012 KCoverage Reliability Evaluation K-COVERAGE RELIABILITY EVALUATION

    E-Print Network [OSTI]

    Xing, Liudong

    #12;7/20/2012 ISSAT 2012 KCoverage Reliability Evaluation forWSNs 2 Introduction Wireless sensor;7/20/2012 ISSAT 2012 KCoverage Reliability Evaluation forWSNs 7 Model 13 Consider a set of sensor nodes (SN7/20/2012 ISSAT 2012 KCoverage Reliability Evaluation forWSNs 1 K-COVERAGE RELIABILITY EVALUATION

  8. Reliability of Electrical Interconnects (Presentation)

    SciTech Connect (OSTI)

    Devoto, D.

    2014-06-01T23:59:59.000Z

    This presentation discusses the status of NREL's research on the reliability of electrical interconnects.

  9. Empirical Bayes Estimation of Reliability

    E-Print Network [OSTI]

    Pensky, Marianna

    types of equipment relies on statistical inference about char- acteristics of reliabilityEmpirical Bayes Estimation of Reliability Introduction Assessment of the reliability of various such as reliability function, mean lifetime of the devices, or failure rate. Gen- eral techniques of statistical

  10. ELG 5124: Virtual Environments, (Winter 2008) ELG 5124 Virtual Environments (Winter 2008)

    E-Print Network [OSTI]

    Petriu, Emil M.

    , human body modeling and animation. #12;ELG 5124: Virtual Environments, (Winter 2008) AnimationELG 5124: Virtual Environments, (Winter 2008) ELG 5124 Virtual Environments (Winter 2008) Tuesday% _______________________________________________ Calendar description Basic concepts. Virtual worlds. Hardware and software support. World modeling

  11. Power electronics reliability.

    SciTech Connect (OSTI)

    Kaplar, Robert James; Brock, Reinhard C.; Marinella, Matthew; King, Michael Patrick; Stanley, James K.; Smith, Mark A.; Atcitty, Stanley

    2010-10-01T23:59:59.000Z

    The project's goals are: (1) use experiments and modeling to investigate and characterize stress-related failure modes of post-silicon power electronic (PE) devices such as silicon carbide (SiC) and gallium nitride (GaN) switches; and (2) seek opportunities for condition monitoring (CM) and prognostics and health management (PHM) to further enhance the reliability of power electronics devices and equipment. CM - detect anomalies and diagnose problems that require maintenance. PHM - track damage growth, predict time to failure, and manage subsequent maintenance and operations in such a way to optimize overall system utility against cost. The benefits of CM/PHM are: (1) operate power conversion systems in ways that will preclude predicted failures; (2) reduce unscheduled downtime and thereby reduce costs; and (3) pioneering reliability in SiC and GaN.

  12. Human Reliability Program Workshop

    SciTech Connect (OSTI)

    Landers, John; Rogers, Erin; Gerke, Gretchen

    2014-05-18T23:59:59.000Z

    A Human Reliability Program (HRP) is designed to protect national security as well as worker and public safety by continuously evaluating the reliability of those who have access to sensitive materials, facilities, and programs. Some elements of a site HRP include systematic (1) supervisory reviews, (2) medical and psychological assessments, (3) management evaluations, (4) personnel security reviews, and (4) training of HRP staff and critical positions. Over the years of implementing an HRP, the Department of Energy (DOE) has faced various challenges and overcome obstacles. During this 4-day activity, participants will examine programs that mitigate threats to nuclear security and the insider threat to include HRP, Nuclear Security Culture (NSC) Enhancement, and Employee Assistance Programs. The focus will be to develop an understanding of the need for a systematic HRP and to discuss challenges and best practices associated with mitigating the insider threat.

  13. Virtual Science Fair | Department of Energy

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

    Virtual Science Fair Virtual Science Fair The Bioenergy Technology Office (BETO) is hosting a national virtual science fair that engages 9th-12th grade students in learning about...

  14. Virtual stationary timed automata for mobile networks

    E-Print Network [OSTI]

    Nolte, Tina Ann, 1979-

    2009-01-01T23:59:59.000Z

    In this thesis, we formally define a programming abstraction for mobile networks called the Virtual Stationary Automata programming layer, consisting of real mobile clients, virtual timed I/O automata called virtual ...

  15. Expressive Autonomous Cinematography for Interactive Virtual Environments

    E-Print Network [OSTI]

    Tomlinson, Bill

    Expressive Autonomous Cinematography for Interactive Virtual Environments Bill Tomlinson Synthetic an automatic cinematography system for interactive virtual environments. This system controls a virtual camera this cinematography system with an ethologically-inspired structure of sensors, emotions, motivations, and action

  16. Reliable computation Peter Gacs

    E-Print Network [OSTI]

    Gacs, Peter

    of compressors 28 4.6. Exercises 30 5. The reliable storage problem 32 5.1. Clocked circuits 32 5.2. Storage 34 5.1. Cables 21 4.2. Compressors 23 4.3. Propagating safety 25 4.4. Endgame 26 4.5. The construction.3. Error-correcting codes 35 5.4. Refreshers 39 5.5. Exercises 48 6. Problems 49 7. Historical remarks 51

  17. Testing for PV Reliability (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.; Bansal, S.

    2014-09-01T23:59:59.000Z

    The DOE SUNSHOT workshop is seeking input from the community about PV reliability and how the DOE might address gaps in understanding. This presentation describes the types of testing that are needed for PV reliability and introduces a discussion to identify gaps in our understanding of PV reliability testing.

  18. Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano and Edward W. Knightly

    E-Print Network [OSTI]

    Knightly, Edward W.

    Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano and Edward W. Knightly ECE Department-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO has the potential to vastly improve wireless link reliability and bit error rates

  19. Virtual MISO: Experimental Evaluation of MAC to Network-Scale Factors

    E-Print Network [OSTI]

    Virtual MISO: Experimental Evaluation of MAC to Network-Scale Factors Oscar Bejarano and Edward W-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO has been shown to vastly improve wireless link reliability and bit error rates

  20. High-reliability computing for the smarter planet

    SciTech Connect (OSTI)

    Quinn, Heather M [Los Alamos National Laboratory; Graham, Paul [Los Alamos National Laboratory; Manuzzato, Andrea [UNIV OF PADOVA; Dehon, Andre [UNIV OF PENN; Carter, Nicholas [INTEL CORPORATION

    2010-01-01T23:59:59.000Z

    The geometric rate of improvement of transistor size and integrated circuit performance, known as Moore's Law, has been an engine of growth for our economy, enabling new products and services, creating new value and wealth, increasing safety, and removing menial tasks from our daily lives. Affordable, highly integrated components have enabled both life-saving technologies and rich entertainment applications. Anti-lock brakes, insulin monitors, and GPS-enabled emergency response systems save lives. Cell phones, internet appliances, virtual worlds, realistic video games, and mp3 players enrich our lives and connect us together. Over the past 40 years of silicon scaling, the increasing capabilities of inexpensive computation have transformed our society through automation and ubiquitous communications. In this paper, we will present the concept of the smarter planet, how reliability failures affect current systems, and methods that can be used to increase the reliable adoption of new automation in the future. We will illustrate these issues using a number of different electronic devices in a couple of different scenarios. Recently IBM has been presenting the idea of a 'smarter planet.' In smarter planet documents, IBM discusses increased computer automation of roadways, banking, healthcare, and infrastructure, as automation could create more efficient systems. A necessary component of the smarter planet concept is to ensure that these new systems have very high reliability. Even extremely rare reliability problems can easily escalate to problematic scenarios when implemented at very large scales. For life-critical systems, such as automobiles, infrastructure, medical implantables, and avionic systems, unmitigated failures could be dangerous. As more automation moves into these types of critical systems, reliability failures will need to be managed. As computer automation continues to increase in our society, the need for greater radiation reliability is necessary. Already critical infrastructure is failing too frequently. In this paper, we will introduce the Cross-Layer Reliability concept for designing more reliable computer systems.

  1. Designing a Virtual Manikin Animation Framework Aimed at Virtual Prototyping

    E-Print Network [OSTI]

    Rennuit, Antoine; Andriot, Claude; Guillaume, François; Chevassus, Nicolas; Chablat, Damien; Chedmail, Patrick

    2007-01-01T23:59:59.000Z

    In the industry, numerous commercial packages provide tools to introduce, and analyse human behaviour in the product's environment (for maintenance, ergonomics...), thanks to Virtual Humans. We will focus on control. Thanks to algorithms newly introduced in recent research papers, we think we can provide an implementation, which even widens, and simplifies the animation capacities of virtual manikins. In order to do so, we are going to express the industrial expectations as for Virtual Humans, without considering feasibility (not to bias the issue). The second part will show that no commercial application provides the tools that perfectly meet the needs. Thus we propose a new animation framework that better answers the problem. Our contribution is the integration - driven by need ~ of available new scientific techniques to animate Virtual Humans, in a new control scheme that better answers industrial expectations.

  2. Virtual gap dielectric wall accelerator

    DOE Patents [OSTI]

    Caporaso, George James; Chen, Yu-Jiuan; Nelson, Scott; Sullivan, Jim; Hawkins, Steven A

    2013-11-05T23:59:59.000Z

    A virtual, moving accelerating gap is formed along an insulating tube in a dielectric wall accelerator (DWA) by locally controlling the conductivity of the tube. Localized voltage concentration is thus achieved by sequential activation of a variable resistive tube or stalk down the axis of an inductive voltage adder, producing a "virtual" traveling wave along the tube. The tube conductivity can be controlled at a desired location, which can be moved at a desired rate, by light illumination, or by photoconductive switches, or by other means. As a result, an impressed voltage along the tube appears predominantly over a local region, the virtual gap. By making the length of the tube large in comparison to the virtual gap length, the effective gain of the accelerator can be made very large.

  3. Weak Deeply Virtual Compton Scattering

    E-Print Network [OSTI]

    A. Psaker; W. Melnitchouk; A. V. Radyushkin

    2006-12-21T23:59:59.000Z

    We extend the analysis of the deeply virtual Compton scattering process to the weak interaction sector in the generalized Bjorken limit. The virtual Compton scattering amplitudes for the weak neutral and charged currents are calculated at the leading twist within the framework of the nonlocal light-cone expansion via coordinate space QCD string operators. Using a simple model, we estimate cross sections for neutrino scattering off the nucleon, relevant for future high intensity neutrino beam facilities.

  4. Weak Deeply Virtual Compton Scattering

    SciTech Connect (OSTI)

    Ales Psaker; Wolodymyr Melnitchouk; Anatoly Radyushkin

    2007-03-01T23:59:59.000Z

    We extend the analysis of the deeply virtual Compton scattering process to the weak interaction sector in the generalized Bjorken limit. The virtual Compton scattering amplitudes for the weak neutral and charged currents are calculated at the leading twist within the framework of the nonlocal light-cone expansion via coordinate space QCD string operators. Using a simple model, we estimate cross sections for neutrino scattering off the nucleon, relevant for future high intensity neutrino beam facilities.

  5. Virtual environment tactile system

    DOE Patents [OSTI]

    Renzi, Ronald (90 Arroyo Seco Way, Tracy, San Joaquin County, CA 95376)

    1996-01-01T23:59:59.000Z

    A method for providing a realistic sense of touch in virtual reality by means of programmable actuator assemblies is disclosed. Each tactile actuator assembly consists of a number of individual actuators whose movement is controlled by a computer and associated drive electronics. When an actuator is energized, the rare earth magnet and the associated contactor, incorporated within the actuator, are set in motion by the opposing electromagnetic field of a surrounding coil. The magnet pushes the contactor forward to contact the skin resulting in the sensation of touch. When the electromagnetic field is turned off, the rare earth magnet and the contactor return to their neutral positions due to the magnetic equilibrium caused by the interaction with the ferrous outer sleeve. The small size and flexible nature of the actuator assemblies permit incorporation into a glove, boot or body suit. The actuator has additional applications, such as, for example, as an accelerometer, an actuator for precisely controlled actuations or to simulate the sensation of braille letters.

  6. Virtual environment tactile system

    DOE Patents [OSTI]

    Renzi, R.

    1996-12-10T23:59:59.000Z

    A method for providing a realistic sense of touch in virtual reality by means of programmable actuator assemblies is disclosed. Each tactile actuator assembly consists of a number of individual actuators whose movement is controlled by a computer and associated drive electronics. When an actuator is energized, the rare earth magnet and the associated contactor, incorporated within the actuator, are set in motion by the opposing electromagnetic field of a surrounding coil. The magnet pushes the contactor forward to contact the skin resulting in the sensation of touch. When the electromagnetic field is turned off, the rare earth magnet and the contactor return to their neutral positions due to the magnetic equilibrium caused by the interaction with the ferrous outer sleeve. The small size and flexible nature of the actuator assemblies permit incorporation into a glove, boot or body suit. The actuator has additional applications, such as, for example, as an accelerometer, an actuator for precisely controlled actuations or to simulate the sensation of braille letters. 28 figs.

  7. Sandia National Laboratories: Inverter Reliability

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

    in Hosted by Sandia National Laboratories and the Electric Power Research Institute (EPRI) Inverter reliability drives project life cycle costs and plant performance. This...

  8. Sandia National Laboratories: Component Reliability

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

    in Hosted by Sandia National Laboratories and the Electric Power Research Institute (EPRI) Inverter reliability drives project life cycle costs and plant performance. This...

  9. 2014 Human Reliability Program Workshop

    Broader source: Energy.gov [DOE]

    Announcing The Human Reliability Program Workshop Sponsored by Office of Security (AU-50), U.S Department of Energy In collaboration with NA, NE, EM and SC

  10. Sandia National Laboratories: PV Reliability

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

    Reliability Sandia Research on PV Arc-Fault Detection Submitted for US Patent On March 4, 2015, in Computational Modeling & Simulation, Energy, Facilities, News, News & Events,...

  11. Virtual Oxygen Sensor for Innovative NOx and PM Emission Control...

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

    Virtual Oxygen Sensor for Innovative NOx and PM Emission Control Technologies Virtual Oxygen Sensor for Innovative NOx and PM Emission Control Technologies A virtual O2 sensor for...

  12. RELIABILITY OF CAPACITOR CHARGING UNITS

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    experience little change while those using the electronic cutoff would drift due to ageing components and changing parameters. The first few shots using the electronic cutoff were less reliable than subsequentRELIABILITY OF CAPACITOR CHARGING UNITS Clint Sprott July 30, 1965 University of Wisconsin

  13. Photovoltaic performance and reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. [ed.

    1993-12-01T23:59:59.000Z

    This workshop was the sixth in a series of workshops sponsored by NREL/DOE under the general subject of photovoltaic testing and reliability during the period 1986--1993. PV performance and PV reliability are at least as important as PV cost, if not more. In the US, PV manufacturers, DOE laboratories, electric utilities, and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in the field were brought together to exchange the technical knowledge and field experience as related to current information in this evolving field of PV reliability. The papers presented here reflect this effort since the last workshop held in September, 1992. The topics covered include: cell and module characterization, module and system testing, durability and reliability, system field experience, and standards and codes.

  14. Technical Documentation for System Center 2012 Virtual Machine

    E-Print Network [OSTI]

    Hunt, Galen

    #12; Technical Documentation for System Center 2012 ­ Virtual Machine Manager VMM Information Experience Team Summary: Virtual Machine Manager (VMM) is a management solution for the virtualized datacenter, enabling you to configure and manage your virtualization host, networking, and storage

  15. Developing a Conceptual Model of Virtual Organizations for Citizen Science

    E-Print Network [OSTI]

    Crowston, Kevin

    Developing a Conceptual Model of Virtual Organizations for Citizen Science Andrea Wiggins Syracuse-oriented conceptual model of scientific knowledge production through citizen science virtual organizations. Citizen: conceptual models, virtual organizations, citizen science, cyberinfrastructure, massive virtual

  16. Virtual Education in Kansas: 1998-2014

    E-Print Network [OSTI]

    Adams, Christina Marie

    2014-08-31T23:59:59.000Z

    K-12 virtual education is a growing trend in American education. Virtual education is defined as K-12 online learning experiences led by district-affiliated teachers as part of a structured public school learning program ...

  17. The DOE Virtual University (DVU) Icon

    Broader source: Energy.gov [DOE]

     The Office of Learning & Workforce Development launched a desktop icon for its virtual university.  The DOE Virtual University (DVU) icon is on most of the DOE desktops (most of HQ, except EIA...

  18. Virtual Reality to Improve Remote Control in Presence of Delays

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    or domotics. I. VIRTUAL REALITY AND REMOTE CONTROL One of the aims of virtual reality is to reproduce real

  19. VIRTUAL TRAINING CENTRE FOR SHOE DESIGN: A SAMPLE VIRTUAL TRAINING ENVIRONMENT

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    VIRTUAL TRAINING CENTRE FOR SHOE DESIGN: A SAMPLE VIRTUAL TRAINING ENVIRONMENT Aura Mihai1 , Mehmet@tex.tuiasi.ro Abstract It is a fact that virtual training has become a key issue in training. There are numerous virtual learning and training environments and, in parallel with this, there are various approaches and tools

  20. The CloudNets Network Virtualization Architecture

    E-Print Network [OSTI]

    Schmid, Stefan

    Nets Network Virtualization Architecture Johannes Grassler jgrassler@inet.tu-berlin.de 05. Februar, 2014 Johannes Grassler jgrassler@inet.tu-berlin.de The CloudNets Network Virtualization Architecture #12;..... . .... . .... . ..... . .... . .... . .... . ..... . .... . .... . .... . ..... . .... . .... . .... . ..... . .... . ..... . .... . .... . Johannes Grassler jgrassler@inet.tu-berlin.de The CloudNets Network Virtualization Architecture #12

  1. Information in Virtual Spaces Susanne Riehemann

    E-Print Network [OSTI]

    Zalta, Edward N.

    as a result of developments in immersive interactive virtual 3D spaces, geographic information systems with these visualizations and by studying automatic verbalization of virtual events and automatic creation of virtual events that the user has control over viewpoints and can manipulate data or a

  2. A virtual substitution of Brouwer choice sequence

    E-Print Network [OSTI]

    Klaus Lange

    2009-08-24T23:59:59.000Z

    Step by step a substitution of the well known Brouwer choice sequence will be constructed. It begins with an establishing of quasi alternating prime number series followed by a construction of a virtual sequence in sense of the virtual set definition. The last step gives reasons for why this virtual sequence substitutes the choice sequence created by L. E. J. Brouwer.

  3. Reliable High Performance Peta- and Exa-Scale Computing

    SciTech Connect (OSTI)

    Bronevetsky, G

    2012-04-02T23:59:59.000Z

    As supercomputers become larger and more powerful, they are growing increasingly complex. This is reflected both in the exponentially increasing numbers of components in HPC systems (LLNL is currently installing the 1.6 million core Sequoia system) as well as the wide variety of software and hardware components that a typical system includes. At this scale it becomes infeasible to make each component sufficiently reliable to prevent regular faults somewhere in the system or to account for all possible cross-component interactions. The resulting faults and instability cause HPC applications to crash, perform sub-optimally or even produce erroneous results. As supercomputers continue to approach Exascale performance and full system reliability becomes prohibitively expensive, we will require novel techniques to bridge the gap between the lower reliability provided by hardware systems and users unchanging need for consistent performance and reliable results. Previous research on HPC system reliability has developed various techniques for tolerating and detecting various types of faults. However, these techniques have seen very limited real applicability because of our poor understanding of how real systems are affected by complex faults such as soft fault-induced bit flips or performance degradations. Prior work on such techniques has had very limited practical utility because it has generally focused on analyzing the behavior of entire software/hardware systems both during normal operation and in the face of faults. Because such behaviors are extremely complex, such studies have only produced coarse behavioral models of limited sets of software/hardware system stacks. Since this provides little insight into the many different system stacks and applications used in practice, this work has had little real-world impact. My project addresses this problem by developing a modular methodology to analyze the behavior of applications and systems during both normal and faulty operation. By synthesizing models of individual components into a whole-system behavior models my work is making it possible to automatically understand the behavior of arbitrary real-world systems to enable them to tolerate a wide range of system faults. My project is following a multi-pronged research strategy. Section II discusses my work on modeling the behavior of existing applications and systems. Section II.A discusses resilience in the face of soft faults and Section II.B looks at techniques to tolerate performance faults. Finally Section III presents an alternative approach that studies how a system should be designed from the ground up to make resilience natural and easy.

  4. Virtual Control Systems Environment (VCSE)

    SciTech Connect (OSTI)

    Atkins, Will

    2012-10-08T23:59:59.000Z

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  5. Toward Virtual Actors Maciej Kalisiak

    E-Print Network [OSTI]

    Toronto, University of

    yet another set of demands. One of the key objects being animated are human or human-like characters for storytelling and drama, natural-looking human animation has been a long-sought goal. Although our present. The advent of virtual actors would make computer animation accessible to a much larger user base, bringing

  6. Virtual Control Systems Environment (VCSE)

    ScienceCinema (OSTI)

    Atkins, Will

    2014-02-26T23:59:59.000Z

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  7. Photovoltaics performance and reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. (ed.) [ed.

    1992-01-01T23:59:59.000Z

    This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

  8. Photovoltaics performance and reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. [ed.] [ed.

    1992-11-01T23:59:59.000Z

    This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

  9. Transportation planning: A virtual reality

    SciTech Connect (OSTI)

    Bradley, J. [Johnson Controls, International (United States); Hefele, J.; Dolin, R.M. [Los Alamos National Lab., NM (United States)

    1994-07-01T23:59:59.000Z

    An important factor in the development of any base technology is generating it in such a way that these technologies will continue to be useful through systems upgrades and implementation philosophy metamorphoses. Base technologies of traffic engineering including transportation modeling, traffic impact forecasting, traffic operation management, emergency situation routing and re-routing, and signal systems optimization should all be designed with the future in mind. Advanced Traffic Engineering topics, such as Intelligent Vehicle Highway Systems, are designed with advanced engineering concepts such as rules-based design and artificial intelligence. All aspects of development of base technologies must include Total Quality Engineering as the primary factor in order to succeed. This philosophy for development of base technologies for the County of Los Alamos is being developed leveraging the resources of the Center for Advanced Engineering Technology (CAET) at the Los Alamos National Laboratory. The mission of the CAET is to develop next-generation engineering technology that supports the Los Alamos National Laboratory`s mission and to transfer that technology to industry and academia. The CAET`s goal is to promote industrial, academic, and government interactions in diverse areas of engineering technology, such as, design, analysis, manufacturing, virtual enterprise, robotics, telepresence, rapid prototyping, and virtual environment technology. The Center is expanding, enhancing, and increasing core competencies at the Los Alamos National Laboratory. The CAET has three major thrust areas: development of base technologies, virtual environment technology applications, and educational outreach and training. Virtual environment technology immerses a user in a nonexistent or augmented environment for research or training purposes. Virtual environment technology illustrates the axiom, ``The best way to learn is by doing.``

  10. Constructing Reliable Distributed Communication Systems with CORBA

    E-Print Network [OSTI]

    Schmidt, Douglas C.

    Constructing Reliable Distributed Communication Systems with CORBA Silvano Maffeis Douglas C model to support reliable data- and process- oriented distributed systems that communicate through syn distributed object computing systems with CORBA. First, we examine the question of whether reliable applica

  11. Distributed Reliable Object-Oriented Programming (DROOP)

    E-Print Network [OSTI]

    Guerraoui, Rachid

    Distributed Reliable Object-Oriented Programming (DROOP) P. Eugster November 3, 2003 Abstract with such failures, coining the term Distributed Reliable Object-Oriented Programming (DROOP). 1 SCOOP

  12. Thermoelectric Materials By Design: Mechanical Reliability (Agreement...

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

    By Design: Mechanical Reliability (Agreement 14957) Thermoelectric Materials By Design: Mechanical Reliability (Agreement 14957) Presentation from the U.S. DOE Office of Vehicle...

  13. PEEM Thermal Stress and Reliability (Presentation)

    SciTech Connect (OSTI)

    O'Keefe, M. P.

    2007-11-08T23:59:59.000Z

    Advancing power electronics thermal stress and reliability is a critical factor in power electronics equipment. NREL aims to improve thermal stress and reliability of power electronics technologies.

  14. Distributed Generation Operational Reliability and Availability...

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

    Reliability and Availability Database, Final Report, January 2004 Distributed Generation Operational Reliability and Availability Database, Final Report, January 2004 This final...

  15. Recommendations to Address Power Reliability Concerns Raised...

    Energy Savers [EERE]

    Reliability Concerns Raised as a Result of Pending Environmental Regulations for Electric Generation Stations Recommendations to Address Power Reliability Concerns Raised as a...

  16. Sandia National Laboratories: photovoltaic plant reliability

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

    photovoltaic plant reliability Sandia-Electric Power Research Institute Partnership Publishes Photovoltaic Reliability Report On January 21, 2014, in Energy, Facilities, Grid...

  17. Sandia National Laboratories: national reliability database

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

    national reliability database Third Annual Continuous Reliability Enhancement for Wind (CREW) Database Report Now Available On October 17, 2013, in Energy, News, News & Events,...

  18. Smart Grid Investments Improve Grid Reliability, Resilience,...

    Office of Environmental Management (EM)

    Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November...

  19. National laboratories` capabilities summaries for the DOE Virtual Center for Multiphase Dynamics (VCMD)

    SciTech Connect (OSTI)

    Joyce, E.L.

    1997-03-01T23:59:59.000Z

    The Virtual Center For Multiphase Dynamics (VCMD) integrates and develops the resources of industry, government, academia, and professional societies to enable reliable analysis in multiphase computational fluid dynamics. The primary means of the VCMD focus will be by the creation, support, and validation of a computerized simulation capability for multiphase flow and multiphase flow applications. This paper briefly describes the capabilities of the National Laboratories in this effort.

  20. Real Oscillations of Virtual Neutrinos

    E-Print Network [OSTI]

    W. Grimus; P. Stockinger

    1996-03-28T23:59:59.000Z

    We study the conditions for neutrino oscillations in a field theoretical approach by taking into account that only the neutrino production and detection processes, which are localized in space around the coordinates $\\vec{x}_P$ and $\\vec{x}_D$, respectively, can be manipulated. In this sense the neutrinos whose oscillations are investigated appear as virtual lines connecting production with detection in the total Feynman graph and all neutrino fields or states to be found in the discussion are mass eigenfields or eigenstates. We perform a thorough examination of the integral over the spatial components of the inner neutrino momentum and show that in the asymptotic limit $L=|\\vec{x}_D - \\vec{x}_P| \\rightarrow \\infty$ the virtual neutrinos become ``real'' and under certain conditions the usual picture of neutrino oscillations emerges without ambiguities.

  1. Real oscillations of virtual neutrinos

    E-Print Network [OSTI]

    Grimus, Walter

    1996-01-01T23:59:59.000Z

    We study the conditions for neutrino oscillations in a field theoretical approach by taking into account that only the neutrino production and detection processes, which are localized in space around the coordinates \\vec{x}_P and \\vec{x}_D, respectively, can be manipulated. In this sense the neutrinos whose oscillations are investigated appear as virtual lines connecting production with detection in the total Feynman graph and all neutrino fields or states to be found in the discussion are mass eigenfields or eigenstates. We perform a thorough examination of the integral over the spatial components of the inner neutrino momentum and show that in the asymptotic limit L=|\\vec{x}_D - \\vec{x}_P| \\rightarrow \\infty the virtual neutrinos become ``real'' and under certain conditions the usual picture of neutrino oscillations emerges without ambiguities.

  2. Computer Assisted Virtual Environment - CAVE

    ScienceCinema (OSTI)

    Erickson, Phillip; Podgorney, Robert; Weingartner, Shawn; Whiting, Eric

    2014-06-09T23:59:59.000Z

    Research at the Center for Advanced Energy Studies is taking on another dimension with a 3-D device known as a Computer Assisted Virtual Environment. The CAVE uses projection to display high-end computer graphics on three walls and the floor. By wearing 3-D glasses to create depth perception and holding a wand to move and rotate images, users can delve into data.

  3. Science with Virtual Observatory Tools

    E-Print Network [OSTI]

    P. Padovani

    2004-11-12T23:59:59.000Z

    The Virtual Observatory is now mature enough to produce cutting-edge science results. The exploitation of astronomical data beyond classical identification limits with interoperable tools for statistical identification of sources has become a reality. I present the discovery of 68 optically faint, obscured (i.e., type 2) active galactic nuclei (AGN) candidates in the two GOODS fields using the Astrophysical Virtual Observatory (AVO) prototype. Thirty-one of these sources have high estimated X-ray powers (>10^44 erg/s) and therefore qualify as optically obscured quasars, the so-called QSO 2. The number of these objects in the GOODS fields is now 40, an improvement of a factor > 4 when compared to the only 9 such sources previously known. By going ~ 3 magnitudes fainter than previously known type 2 AGN in the GOODS fields the AVO is sampling a region of redshift -- power space much harder to reach with classical methods. I also discuss the AVO move to our next phase, the EURO-VO, and our short-term plans to continue doing science with the Virtual Observatory.

  4. Virtual data in CMS analysis

    SciTech Connect (OSTI)

    A. Arbree et al.

    2003-10-01T23:59:59.000Z

    The use of virtual data for enhancing the collaboration between large groups of scientists is explored in several ways: by defining ''virtual'' parameter spaces which can be searched and shared in an organized way by a collaboration of scientists in the course of their analysis; by providing a mechanism to log the provenance of results and the ability to trace them back to the various stages in the analysis of real or simulated data; by creating ''check points'' in the course of an analysis to permit collaborators to explore their own analysis branches by refining selections, improving the signal to background ratio, varying the estimation of parameters, etc.; by facilitating the audit of an analysis and the reproduction of its results by a different group, or in a peer review context. We describe a prototype for the analysis of data from the CMS experiment based on the virtual data system Chimera and the object-oriented data analysis framework ROOT. The Chimera system is used to chain together several steps in the analysis process including the Monte Carlo generation of data, the simulation of detector response, the reconstruction of physics objects and their subsequent analysis, histogramming and visualization using the ROOT framework.

  5. Ris-R-1235(EN) Reliability Databases

    E-Print Network [OSTI]

    .1 ISO standard: Gas and Oil - Collection of Reliability and Maintenance Data for Equipment 17 5.2 EDF standard for collection of reliability and maintenance data for equipment (also called MCD ­ Mode et Cause judgements on new equipment reliability parameters or using standard values or standard reliability models (e

  6. Assessing Reliability in Energy Supply Systems

    E-Print Network [OSTI]

    McCarthy, Ryan; Ogden, Joan M.; Sperling, Dan

    2008-01-01T23:59:59.000Z

    total of 15 metrics. Pathway reliability General objectives Adequacy Security Functional zones Primary energy supply

  7. Assessing reliability in energy supply systems

    E-Print Network [OSTI]

    McCarthy, Ryan W.; Ogden, Joan M.; Sperling, Daniel

    2007-01-01T23:59:59.000Z

    total of 15 metrics. Pathway reliability General objectives Adequacy Security Functional zones Primary energy supply

  8. The design of a reliable reputation system

    E-Print Network [OSTI]

    Swamynathan, Gayatri; Almeroth, Kevin C.; Zhao, Ben Y.

    2010-01-01T23:59:59.000Z

    reliability by spreading its transactions evenly across all 20 peers in the system (shown by Distribution

  9. Photovoltaic performance and reliability workshop

    SciTech Connect (OSTI)

    Kroposki, B.

    1996-10-01T23:59:59.000Z

    This proceedings is the compilation of papers presented at the ninth PV Performance and Reliability Workshop held at the Sheraton Denver West Hotel on September 4--6, 1996. This years workshop included presentations from 25 speakers and had over 100 attendees. All of the presentations that were given are included in this proceedings. Topics of the papers included: defining service lifetime and developing models for PV module lifetime; examining and determining failure and degradation mechanisms in PV modules; combining IEEE/IEC/UL testing procedures; AC module performance and reliability testing; inverter reliability/qualification testing; standardization of utility interconnect requirements for PV systems; need activities to separate variables by testing individual components of PV systems (e.g. cells, modules, batteries, inverters,charge controllers) for individual reliability and then test them in actual system configurations; more results reported from field experience on modules, inverters, batteries, and charge controllers from field deployed PV systems; and system certification and standardized testing for stand-alone and grid-tied systems.

  10. Wind turbine reliability database update.

    SciTech Connect (OSTI)

    Peters, Valerie A.; Hill, Roger Ray; Stinebaugh, Jennifer A.; Veers, Paul S.

    2009-03-01T23:59:59.000Z

    This report documents the status of the Sandia National Laboratories' Wind Plant Reliability Database. Included in this report are updates on the form and contents of the Database, which stems from a fivestep process of data partnerships, data definition and transfer, data formatting and normalization, analysis, and reporting. Selected observations are also reported.

  11. FIELD RELIABILITY OF ELECTRONIC SYSTEMS

    E-Print Network [OSTI]

    study of in-the-field experience of electronics reliability. Tage Elm. Abstract. This report and internally) induced failures. The report is not meant to be merely an indication of the state of the art for the re- liability prediction methods we know, but also as a contribution to the investigation of man-machine

  12. Virtual(ly) Queer: Anti-Genealogy and Obsessive-Compulsion in Bechdels' Fun Home

    E-Print Network [OSTI]

    Gill-Peterson, Julian

    2012-01-01T23:59:59.000Z

    will require giving up on genealogy to notice the virtuallyVirtual(ly) Queer: Anti-Genealogy and Obsessive-Compulsionlines are the form of genealogies, the tracing of lines of

  13. Numerically Estimating Internal Models of Dynamic Virtual Objects

    E-Print Network [OSTI]

    Sekuler, Robert

    human subjects to manipulate a computer-animated virtual object. This virtual object (vO) was a high, human cognition, human information processing, ideal performer, internal model, virtual object, virtual, specifically how humans acquire an internal model of a dynamic virtual object. Our methodology minimizes

  14. Active Perception in Virtual Humans Tamer F. Rabie Demetri Terzopoulos

    E-Print Network [OSTI]

    Terzopoulos, Demetri

    Active Perception in Virtual Humans Tamer F. Rabie Demetri Terzopoulos Department of Electrical prescribes artificial animals, or animats, situated in physics- based virtual worlds as autonomous virtual a pro- totype animat vision implementation within realistic virtual human soldiers situated in a virtual

  15. A virtual company concept for reservoir management

    SciTech Connect (OSTI)

    Martin, F.D. [Dave Martin and Associates, Inc. (United States); Kendall, R.P.; Whitney, E.M. [Los Alamos National Lab., NM (United States)

    1998-12-31T23:59:59.000Z

    This paper describes how reservoir management problems were pursued with a virtual company concept via the Internet and World Wide Web. The focus of the paper is on the implementation of virtual asset management teams that were assembled with small independent oil companies. The paper highlights the mechanics of how the virtual team transferred data and interpretations, evaluated geological models of complex reservoirs, and used results of simulation studies to analyze various reservoir management strategies.

  16. Final report : testing and evaluation for solar hot water reliability.

    SciTech Connect (OSTI)

    Caudell, Thomas P. (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; He, Hongbo (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; Menicucci, David F. (Building Specialists, Inc., Albuquerque, NM) [Building Specialists, Inc., Albuquerque, NM; Mammoli, Andrea A. (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; Burch, Jay (National Renewable Energy Laboratory, Golden CO) [National Renewable Energy Laboratory, Golden CO

    2011-07-01T23:59:59.000Z

    Solar hot water (SHW) systems are being installed by the thousands. Tax credits and utility rebate programs are spurring this burgeoning market. However, the reliability of these systems is virtually unknown. Recent work by Sandia National Laboratories (SNL) has shown that few data exist to quantify the mean time to failure of these systems. However, there is keen interest in developing new techniques to measure SHW reliability, particularly among utilities that use ratepayer money to pay the rebates. This document reports on an effort to develop and test new, simplified techniques to directly measure the state of health of fielded SHW systems. One approach was developed by the National Renewable Energy Laboratory (NREL) and is based on the idea that the performance of the solar storage tank can reliably indicate the operational status of the SHW systems. Another approach, developed by the University of New Mexico (UNM), uses adaptive resonance theory, a type of neural network, to detect and predict failures. This method uses the same sensors that are normally used to control the SHW system. The NREL method uses two additional temperature sensors on the solar tank. The theories, development, application, and testing of both methods are described in the report. Testing was performed on the SHW Reliability Testbed at UNM, a highly instrumented SHW system developed jointly by SNL and UNM. The two methods were tested against a number of simulated failures. The results show that both methods show promise for inclusion in conventional SHW controllers, giving them advanced capability in detecting and predicting component failures.

  17. Virtual Hydropower Prospecting – Searching for Hydropower Gold

    SciTech Connect (OSTI)

    Douglas G. Hall

    2007-12-01T23:59:59.000Z

    The availability of geographic information system (GIS) tools and analytical modeling of natural streams has made it possible to perform virtual “river inventories” that were formerly done using topographic maps, stream flow estimates, and physical reconnaissance. The Idaho National Laboratory (INL) in collaboration with the U.S. Geological Survey (USGS) virtually assessed the gross power potential of all natural streams in the United States of America and identified feasible potential project sites and estimated their developable power potential. The results of this virtual prospecting have been incorporated into a GIS application called the Virtual Hydropower Prospector that is available for public use on the Internet.

  18. Virtual Training Centre For CNC: a Sample Virtual Training Environment Mehmet Sahin1

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    Virtual Training Centre For CNC: a Sample Virtual Training Environment Mehmet Sahin1 , Süleyman bilalis@dpem.tuc.gr Abstract It is a fact that virtual training has been a scope of interest for vocational training for a very long time. However, it needs more time to be more common in all specific

  19. Virtualized Network Control: Final Report

    SciTech Connect (OSTI)

    Ghani, Nasir [University of New Mexico

    2013-02-01T23:59:59.000Z

    This document is the final report for the Virtualized Network Control (VNC) project, which was funded by the United States Department of Energy (DOE) Office of Science. This project was also informally referred to as Advanced Resource Computation for Hybrid Service and TOpology NEtworks (ARCHSTONE). This report provides a summary of the project's activities, tasks, deliverable, and accomplishments. It also provides a summary of the documents, software, and presentations generated as part of this projects activities. Namely, the Appendix contains an archive of the deliverables, documents, and presentations generated a part of this project.

  20. Reactive behaviour for autonomous virtual agents using fuzzy logic 

    E-Print Network [OSTI]

    Jaafar, Jafreezal

    2009-11-26T23:59:59.000Z

    One of the fundamental aspects of a virtual environment is the virtual agents that inhabit them. In many applications, virtual agents are required to perceive input information from their environment and make decisions ...

  1. Profiling and Modeling Resource Usage of Virtualized Applications

    E-Print Network [OSTI]

    Simunic, Tajana

    , and fully managed adaptive infrastruc- tures. Virtualization technologies promise great opportunities for reducing energy and hardware costs through server consolidation. Moreover, virtualization can optimize needs. However, to safely transition an application running natively on real hardware to a virtualized

  2. Gearbox Reliability Collaborative Bearing Calibration

    SciTech Connect (OSTI)

    van Dam, J.

    2011-10-01T23:59:59.000Z

    NREL has initiated the Gearbox Reliability Collaborative (GRC) to investigate the root cause of the low wind turbine gearbox reliability. The GRC follows a multi-pronged approach based on a collaborative of manufacturers, owners, researchers and consultants. The project combines analysis, field testing, dynamometer testing, condition monitoring, and the development and population of a gearbox failure database. At the core of the project are two 750kW gearboxes that have been redesigned and rebuilt so that they are representative of the multi-megawatt gearbox topology currently used in the industry. These gearboxes are heavily instrumented and are tested in the field and on the dynamometer. This report discusses the bearing calibrations of the gearboxes.

  3. Power Reliability at BASF Corporation

    E-Print Network [OSTI]

    Theising, T. R.

    2011-01-01T23:59:59.000Z

    Power Reliability at BASF Corporation Thomas R. Theising Energy Systems Manager BASF Corporation ABSTRACT: Quality is defined not as what the supplier puts into the product but what the customer gets out and is willing to pay for. Power.... INTRODUCTION: BASF often identifies its? power quality by the effects it has on its ability to manufacture products. Improvements are made to remedy the power quality problems either through the elimination of the problems or through some means...

  4. Power Reliability at BASF Corporation

    E-Print Network [OSTI]

    Theising, T. R.

    2012-01-01T23:59:59.000Z

    Power Reliability at BASF Corporation Thomas R. Theising Energy Systems Manager BASF Corporation ABSTRACT: Quality is defined not as what the supplier puts into the product but what the customer gets out and is willing to pay for. Power.... INTRODUCTION: BASF often identifies its? power quality by the effects it has on its ability to manufacture products. Improvements are made to remedy the power quality problems either through the elimination of the problems or through some means...

  5. Microgrids and Heterogeneous Security, Quality, Reliability, and Availability

    E-Print Network [OSTI]

    Marnay, Chris

    2007-01-01T23:59:59.000Z

    and Energy Reliability, Distribution System Integrationand Energy Reliability, Distribution System Integration

  6. WebGL for Dynamic Virtual Globes

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    WebGL for Dynamic Virtual Globes Patrick Cozzi Analytical Graphics, Inc. pcozzi@agi.com @pjcozzi #12;No anisotropic filtering Overview Cesium A WebGL virtual globe for visualizing dynamic data-side #12;Cesium Architecture - Renderer Scene Renderer Core Renderer - a thin abstraction over Web

  7. Some Aspects of Deeply Virtual Compton Scattering

    E-Print Network [OSTI]

    Elena Kuchina

    2004-05-10T23:59:59.000Z

    We consider different aspects of the virtual Compton amplitude in QCD on two examples: small-x physics accessible in the Regge regime and twist-3 approximation in the description of DVCS through the general parton distributions. Using this model, we give an estimate for the cross section of deeply virtual Compton scattering for the kinematics of CEBAF at Jefferson Lab.

  8. A Deeply Virtual Compton Scattering Amplitude

    E-Print Network [OSTI]

    M. Capua; S. Fazio; R. Fiore; L. Jenkovszky; F. Paccanoni

    2006-07-07T23:59:59.000Z

    A factorized Regge-pole model for deeply virtual Compton scattering is suggested. The use of an effective logarithmic Regge-Pomeron trajectory provides for the description of both ``soft'' (small $|t|$) and ``hard'' (large $|t|$) dynamics. The model contains explicitly the photoproduction and the DIS limits and fits the existing HERA data on deeply virtual Compton scattering.

  9. QCD Sum Rules and Virtual Compton Scattering

    E-Print Network [OSTI]

    A. V. Radyushkin

    1996-09-19T23:59:59.000Z

    In this talk I report on recent progress in a few areas closely related to the virtual Compton scattering studies. In particular, I discuss the quark-hadron duality estimate of the $\\gamma^* p \\to \\Delta^+$ transition, QCD sum rule calculation of the $\\gamma \\gamma^* \\to \\pi^0$ form factor, and application of perturbative QCD to deeply virtual Compton scattering at small $t$.

  10. Storage Management in Virtualized Cloud Environment

    E-Print Network [OSTI]

    Liu, Ling

    the performance bottlenecks in a virtualized setup and understanding the implications of workload combinations present the measurement results of detailed experiments conducted on a virtualized setup focusing/applications enable ubiquitous access to data besides the ability to harness massive computing power even from

  11. Green Virtual Enterprises and their Breeding Environments

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Green Virtual Enterprises and their Breeding Environments David Romero, Arturo Molina Tecnológico. This paper introduces a Green Virtual Enterprise (GVE) model as an emerging sustainable manufacturing and logistics mode focused on offering, delivering and recovering green products to/from the market, under

  12. Coordination and sociability for intelligent virtual agents

    E-Print Network [OSTI]

    Grimaldo, Francisco

    produce low quality animations where characters do not act realistically. Moreover, virtual humans an elegant and formal framework to animate synthetic humans. When designing such agents, the main concern has that will be finally animated. Virtual actors normally operate in dynamic resource bounded contexts; thus, multi

  13. PREPARING THE VIRTUAL CLASSROOM FOR DISTANCE DELIVERY

    E-Print Network [OSTI]

    Dyer, Bill

    of humans and their companion domestic animals and livestock. Students learn that there are certain "at riskPREPARING THE VIRTUAL CLASSROOM FOR DISTANCE DELIVERY: MEDICAL-VETERINARY ENTOMOLOGY CLINICS laboratory," library materials, conventional lectures and the 43 virtual patients in the clinics

  14. SMART Wind Consortium Composites Subgroup Virtual Meeting: Advanced...

    Energy Savers [EERE]

    SMART Wind Consortium Composites Subgroup Virtual Meeting: Advanced Manufacturing of Wind Turbine Blades SMART Wind Consortium Composites Subgroup Virtual Meeting: Advanced...

  15. Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle...

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

    Virtual Lab in Supporting Heavy Duty Engine and Vehicle Emission Rulemaking Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle Emission Rulemaking Presentation...

  16. Proposed Virtual Center for Excellence for Metal Hydride Development

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

    & Engineering Sciences Center Atoms to Continuum Proposed Virtual Center of Excellence Proposed Virtual Center of Excellence for Metal Hydride Development for Metal Hydride...

  17. Energy Department Launches Virtual Hackathon to Build the Next...

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

    Launches Virtual Hackathon to Build the Next Big Solar Software Solutions Energy Department Launches Virtual Hackathon to Build the Next Big Solar Software Solutions February 20,...

  18. Virtual Center of Excellence for Hydrogen Storage - Chemical...

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

    Virtual Center of Excellence for Hydrogen Storage - Chemical Hydrides Virtual Center of Excellence for Hydrogen Storage - Chemical Hydrides Presentation from the Hydrogen Storage...

  19. BioenergizeME Virtual Science Fair: The Environmental Benefit...

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

    The Environmental Benefit of Bioenergy BioenergizeME Virtual Science Fair: The Environmental Benefit of Bioenergy BioenergizeME Virtual Science Fair: The Environmental Benefit of...

  20. BioenergizeME Virtual Science Fair: Science & Technology Sustainable...

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

    Science & Technology Sustainable Transportation Fuels BioenergizeME Virtual Science Fair: Science & Technology Sustainable Transportation Fuels BioenergizeME Virtual Science Fair:...

  1. T-678: Red Hat Enterprise Virtualization Hypervisor VLAN Packet...

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

    8: Red Hat Enterprise Virtualization Hypervisor VLAN Packet Processing Flaw Lets Remote Users Deny Service T-678: Red Hat Enterprise Virtualization Hypervisor VLAN Packet...

  2. Buildings of the Future Research Project Launch and Virtual Panel...

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

    Buildings of the Future Research Project Launch and Virtual Panel Discussion on Building Technology Trends Buildings of the Future Research Project Launch and Virtual Panel...

  3. Reliability Assessment Incorporating Operational Considerations and Economic

    E-Print Network [OSTI]

    PSERC Reliability Assessment Incorporating Operational Considerations and Economic Aspects Engineering Research Center Reliability Assessment Incorporating Operational Considerations and Economic and Economic Aspects for Large Interconnected Grids." We express our appreciation for the support provided

  4. Electric Power Reliability in Chemical Plants

    E-Print Network [OSTI]

    Cross, M. B.

    The quality and reliability of utility-generated electric power is presently receiving a great deal of attention from the chemical and refining industry. What changes have taken place to make electric power reliability a major topic of discussion...

  5. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    Energy Research (PIER) California Energy Commission Beth Chambers Contract Manager Jamie Patterson (VSA) prototype to monitor system voltage conditions and provide real time dispatchers with reliabilityArnold Schwarzenegger Governor REAL-TIME GRID RELIABILITY MANAGEMENT California ISO Real

  6. Data Communication Principles Reliable Data Transfer

    E-Print Network [OSTI]

    Ramkumar, Mahalingam

    Data Communication Principles Switching Reliable Data Transfer Data Communication Basics Mahalingam Ramkumar Mississippi State University, MS September 8, 2014 Ramkumar CSE 4153 / 6153 #12;Data Communication Principles Switching Reliable Data Transfer 1 Data Communication Principles Data Rate of a Communication

  7. Reliability Analysis of Microelectronic Components and Materials

    E-Print Network [OSTI]

    Berlin,Technische Universität

    1 Reliability Analysis of Microelectronic Components and Materials Increasing numbers on the structural integrity of embedded micro- electronic components and assemblies. Improved knowledge and modeling methods are critical for the reliable use of electronic packages. In particular, since the advent

  8. Electric Power Reliability in Chemical Plants 

    E-Print Network [OSTI]

    Cross, M. B.

    1989-01-01T23:59:59.000Z

    at plants across the country? Has the quality and reliability of utility-generated power deteriorated over the past five or ten years? Or, has the perception of what constitutes reliable power changed with the advent, installation, and increasing usage...

  9. Distributed Generation Operational Reliability, Executive Summary...

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

    2004 This report summarizes the results of the project, "Distributed Generation Market Transformation Tools: Distributed Generation Reliability and Availability Database,"...

  10. Reliability Challenges for Solar Energy (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-12-08T23:59:59.000Z

    Presentation that reviews reliability issues related to various types of photovoltaic tecnnologies, including crystalline silicon, thin films, and concentrating PV.

  11. LUNAR MASS SPECTROMETER RELIABILITY LOGIC DIAGRAM

    E-Print Network [OSTI]

    Rathbun, Julie A.

    point (A) to (F). The block diagram also defines the reliability functions for the purpose of FMEA 1

  12. Reliability-based casing design

    SciTech Connect (OSTI)

    Maes, M.A. [Univ. of Calgary, Alberta (Canada). Civil Engineering Dept.; Gulati, K.C.; Johnson, R.C. [Mobil Research and Development Corp., Dallas, TX (United States); McKenna, D.L. [Mobil Producing Nigeria, Lagos (Nigeria); Brand, P.R.; Lewis, D.B. [Mobil E and P Technical Center, Dallas, TX (United States)

    1995-06-01T23:59:59.000Z

    The present paper describes the development of reliability-based design criteria for oil and/or gas well casing/tubing. The approach is based on the fundamental principles of limit state design. Limit states for tubulars are discussed and specific techniques for the stochastic modeling of loading and resistance variables are described. Zonation methods and calibration techniques are developed which are geared specifically to the characteristic tubular design for both hydrocarbon drilling and production applications. The application of quantitative risk analysis to the development of risk-consistent design criteria is shown to be a major and necessary step forward in achieving more economic tubular design.

  13. Dispatcher Reliability Analysis : SPICA-RAIL Experiments

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    consider that humans are fully reliable. But experience shows that many accidents involve human failuresDispatcher Reliability Analysis : SPICA-RAIL Experiments Fabien Belmonte, Jean-Louis Boulanger of scenarios and evaluate the behaviour of human operators. A state of the art in human reliability is pre

  14. RELIABILITY-BASED CASTING PROCESS DESIGN OPTIMIZATION

    E-Print Network [OSTI]

    Beckermann, Christoph

    RELIABILITY-BASED CASTING PROCESS DESIGN OPTIMIZATION Richard Hardin1 , K.K. Choi1 , and Christoph 52242-1527 Keywords: Casting Process Design, Optimization, Reliability-Based Design Optimization purpose reliability-based design optimization (RBDO) software tool previously developed at the University

  15. OPTIMAL RELIABILITY ALLOCATION IN SERIES-PARALLEL SYSTEMS FROM COMPONENTS' DISCRETE COST -RELIABILITY DATA SETS

    E-Print Network [OSTI]

    Smith, Alice E.

    is not known. Instead, we consider the more realistic assumption of discrete cost-reliability data sets expressions for cost-reliability curves, we consider discrete cost-reliability data sets for each componentOPTIMAL RELIABILITY ALLOCATION IN SERIES-PARALLEL SYSTEMS FROM COMPONENTS' DISCRETE COST

  16. Virtual Laboratory for Technology For Fusion Energy Science

    E-Print Network [OSTI]

    VLT Virtual Laboratory for Technology For Fusion Energy Science Stan Milora, ORNL Director, Virtual and ITER #12;VLT Virtual Laboratory for Technology For Fusion Energy Science The Technology Program Virtual Laboratory for Technology For Fusion Energy Science The VLT is the steward of burning plasma

  17. Interaction Techniques with Virtual Humans in Mixed Environments

    E-Print Network [OSTI]

    Kallmann, Marcelo

    animation have led to the integration of Virtual Humans [9] into interactive 3D environments. With emergeInteraction Techniques with Virtual Humans in Mixed Environments Selim Balcisoy, Marcelo Kallmann use virtual humans as mediators between the real and virtual world. Keywords: Interaction Techniques

  18. Software reliability models for critical applications

    SciTech Connect (OSTI)

    Pham, H.; Pham, M.

    1991-12-01T23:59:59.000Z

    This report presents the results of the first phase of the ongoing EG G Idaho, Inc. Software Reliability Research Program. The program is studying the existing software reliability models and proposes a state-of-the-art software reliability model that is relevant to the nuclear reactor control environment. This report consists of three parts: (1) summaries of the literature review of existing software reliability and fault tolerant software reliability models and their related issues, (2) proposed technique for software reliability enhancement, and (3) general discussion and future research. The development of this proposed state-of-the-art software reliability model will be performed in the second place. 407 refs., 4 figs., 2 tabs.

  19. Software reliability models for critical applications

    SciTech Connect (OSTI)

    Pham, H.; Pham, M.

    1991-12-01T23:59:59.000Z

    This report presents the results of the first phase of the ongoing EG&G Idaho, Inc. Software Reliability Research Program. The program is studying the existing software reliability models and proposes a state-of-the-art software reliability model that is relevant to the nuclear reactor control environment. This report consists of three parts: (1) summaries of the literature review of existing software reliability and fault tolerant software reliability models and their related issues, (2) proposed technique for software reliability enhancement, and (3) general discussion and future research. The development of this proposed state-of-the-art software reliability model will be performed in the second place. 407 refs., 4 figs., 2 tabs.

  20. Final report for CCS cross-layer reliability visioning study

    SciTech Connect (OSTI)

    Quinn, Heather M [Los Alamos National Laboratory; Dehon, Andre [U. PENN; Carter, Nicj [INTEL

    2010-12-20T23:59:59.000Z

    The geometric rate of improvement of transistor size and integrated circuit performance known as Moore's Law has been an engine of growth for our economy, enabling new products and services, creating new value and wealth, increasing safety, and removing menial tasks from our daily lives. Affordable, highly integrated components have enabled both life-saving technologies and rich entertainment applications. Anti-lock brakes, insulin monitors, and GPS-enabled emergency response systems save lives. Cell phones, internet appliances, virtual worlds, realistic video games, and mp3 players enrich our lives and connect us together. Over the past 40 years of silicon scaling, the increasing capabilities of inexpensive computation have transformed our society through automation and ubiquitous communications. Looking forward, increasing unpredictability threatens our ability to continue scaling integrated circuits at Moore's Law rates. As the transistors and wires that make up integrated circuits become smaller, they display both greater differences in behavior among devices designed to be identical and greater vulnerability to transient and permanent faults. Conventional design techniques expend energy to tolerate this unpredictability by adding safety margins to a circuit's operating voltage, clock frequency or charge stored per bit. However, the rising energy costs needed to compensate for increasing unpredictability are rapidly becoming unacceptable in today's environment where power consumption is often the limiting factor on integrated circuit performance and energy efficiency is a national concern. Reliability and energy consumption are both reaching key inflection points that, together, threaten to reduce or end the benefits of feature size reduction. To continue beneficial scaling, we must use a cross-layer, Jull-system-design approach to reliability. Unlike current systems, which charge every device a substantial energy tax in order to guarantee correct operation in spite of rare events, such as one high-threshold transistor in a billion or one erroneous gate evaluation in an hour of computation, cross-layer reliability schemes make reliability management a cooperative effort across the system stack, sharing information across layers so that they only expend energy on reliability when an error actually occurs. Figure 1 illustrates an example of such a system that uses a combination of information from the application and cheap architecture-level techniques to detect errors. When an error occurs, mechanisms at higher levels in the stack correct the error, efficiently delivering correct operation to the user in spite of errors at the device or circuit levels. In the realms of memory and communication, engineers have a long history of success in tolerating unpredictable effects such as fabrication variability, transient upsets, and lifetime wear using information sharing, limited redundancy, and cross-layer approaches that anticipate, accommodate, and suppress errors. Networks use a combination of hardware and software to guarantee end-toend correctness. Error-detection and correction codes use additional information to correct the most common errors, single-bit transmission errors. When errors occur that cannot be corrected by these codes, the network protocol requests re-transmission of one or more packets until the correct data is received. Similarly, computer memory systems exploit a cross-layer division of labor to achieve high performance with modest hardware. Rather than demanding that hardware alone provide the virtual memory abstraction, software page-fault and TLB-miss handlers allow a modest piece of hardware, the TLB, to handle the common-case operations on a cyc1e-by-cycle basis while infrequent misses are handled in system software. Unfortunately, mitigating logic errors is not as simple or as well researched as memory or communication systems. This lack of understanding has led to very expensive solutions. For example, triple-modular redundancy masks errors by triplicating computations in either time or area. T

  1. Electricity Delivery and Energy Reliability | Department of Energy

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

    Electricity Delivery and Energy Reliability Electricity Delivery and Energy Reliability information about the delivery of electricity and energy reliability Electricity Delivery...

  2. Microgrids and Heterogeneous Security, Quality, Reliability, and Availability

    E-Print Network [OSTI]

    Marnay, Chris

    2007-01-01T23:59:59.000Z

    quality, reliability, and availability,” IEEE Power & EnergyReliability, and Availability Chris Marnay EnvironmentalQuality, Reliability, and Availability C. Marnay Ernest

  3. Reliable computation of homogeneous azeotropes

    SciTech Connect (OSTI)

    Maier, R.W.; Brennecke, J.F.; Stadtherr, M.A. [Univ. of Notre Dame, IN (United States). Dept. of Chemical Engineering] [Univ. of Notre Dame, IN (United States). Dept. of Chemical Engineering

    1998-08-01T23:59:59.000Z

    It is important to determine the existence and composition of homogeneous azeotropes in the analysis of phase behavior and in the synthesis and design of separation systems, from both theoretical and practical standpoints. A new method for reliably locating any and all homogeneous azeotropes for multicomponent mixtures is presented. The method also verifies the nonexistence of homogeneous azeotropes if none are present. The method is based on interval analysis, in particular an interval-Newton/generalized-bisection-algorithm providing a mathematical and computational guarantee that all azeotropes are located. This general-purpose technique can be applied in connection with any thermodynamic models. The technique is illustrated in several example problems using the Wilson, NRTL, and UNIQUAC activity-coefficient models.

  4. National Energy Literacy Virtual Town Hall

    Broader source: Energy.gov [DOE]

    The webinar will be a dynamic, virtual conversation for educators about ongoing efforts from across the country in utilizing the Department of Energy's Energy Literacy Framework to address one of our nation's’ biggest national challenges, energy illiteracy.

  5. Robotics virtual rail system and method

    DOE Patents [OSTI]

    Bruemmer, David J. (Idaho Falls, ID); Few, Douglas A. (Idaho Falls, ID); Walton, Miles C. (Idaho Falls, ID)

    2011-07-05T23:59:59.000Z

    A virtual track or rail system and method is described for execution by a robot. A user, through a user interface, generates a desired path comprised of at least one segment representative of the virtual track for the robot. Start and end points are assigned to the desired path and velocities are also associated with each of the at least one segment of the desired path. A waypoint file is generated including positions along the virtual track representing the desired path with the positions beginning from the start point to the end point including the velocities of each of the at least one segment. The waypoint file is sent to the robot for traversing along the virtual track.

  6. BioenergizeME Virtual Science Fair: Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  7. QED radiative corrections to virtual Compton scattering

    E-Print Network [OSTI]

    M. Vanderhaeghen; J. M. Friedrich; D. Lhuillier; D. Marchand; L. Van Hoorebeke; J. Van de Wiele

    2000-01-12T23:59:59.000Z

    The QED radiative corrections to virtual Compton scattering (reaction $e p \\to e p \\gamma$) are calculated to first order in $\\alpha_{em} \\equiv e^2 / 4 \\pi$. A detailed study is presented for the one-loop virtual corrections and for the first order soft-photon emission contributions. Furthermore, a full numerical calculation is given for the radiative tail, corresponding with photon emission processes, where the photon energy is not very small compared with the lepton momenta. We compare our results with existing works on elastic electron-proton scattering, and show for the $e p \\to e p \\gamma$ reaction how the observables are modified due to these first order QED radiative corrections. We show results for both unpolarized and polarized observables of the virtual Compton scattering in the low energy region (where one is sensitive to the generalized polarizabilities of the nucleon), as well as for the deeply virtual Compton scattering.

  8. Heavy Ion Fusion Science Virtual National Laboratory

    E-Print Network [OSTI]

    progress with more modest near-term budgets. #12;Slide 5 Heavy Ion Fusion Science Virtual National requirement: modest growth of HIFS-VNL budget from present 7.7 M$/yr to ~16M$/yr, including suppo

  9. Virtual tour: INL's space battery facility

    SciTech Connect (OSTI)

    Johnson, Steve

    2011-01-01T23:59:59.000Z

    This virtual tour shows how INL fuels and tests nuclear power systems for deep space missions. To learn more about INL's contribution to the Mars Science Laboratory, visit http://www.inl.gov/marsrover.

  10. Virtual tour: INL's space battery facility

    ScienceCinema (OSTI)

    Johnson, Steve

    2013-05-28T23:59:59.000Z

    This virtual tour shows how INL fuels and tests nuclear power systems for deep space missions. To learn more about INL's contribution to the Mars Science Laboratory, visit http://www.inl.gov/marsrover.

  11. Balanced Virtual Humans Interacting with their Environment

    E-Print Network [OSTI]

    Rennuit, Antoine; Merlhiot, Xavier; Andriot, Claude; Guillaume, François; Chevassus, Nicolas; Chablat, Damien; Chedmail, Patrick

    2007-01-01T23:59:59.000Z

    The animation of human avatars seems very successful; the computer graphics industry shows outstanding results in films everyday, the game industry achieves exploits... Nevertheless, the animation and control processes of such manikins are very painful. It takes days to a specialist to build such animated sequences, and it is not adaptive to any type of modifications. Our main purpose is the virtual human for engineering, especially virtual prototyping. As for this domain of activity, such amounts of time are prohibitive.

  12. Motion Capture Based Animation for Virtual Human Demonstrators: Modeling, Parameterization and Planning

    E-Print Network [OSTI]

    Huang, Yazhou

    2012-01-01T23:59:59.000Z

    sive gaze animation for virtual humans. ” In Proceedings ofCapture Based Animation for Virtual Human Demonstrators:Capture Based Animation for Virtual Human Demonstrators:

  13. Power as a function of reliability

    SciTech Connect (OSTI)

    Abate, M.L. [Sandia National Labs., Albuquerque, NM (United States); McCabe, G.P.; Lynch, M.P. [Purdue Univ., Lafayette, IN (United States)

    1995-10-01T23:59:59.000Z

    Many studies employ multiple measurement instruments such as human raters, observers, judges, or mechanical gauges to record subject data. It is well known that the consistency of these instruments, commonly called rater reliability, limits the extent to which conclusions should be drawn from the observed data. However, the degree to which rater reliability limits conclusions has traditionally been assessed in only subjective manners. In this paper, a method is developed for objectively quantifying the impact of rate reliability on the statistical analysis of data from a commonly used collection scheme. This method allows the inclusion of a reliability index in statistical power calculations and is an invaluable tool in the planning of experiments.

  14. General Order Ensuring Reliable Electric Service (Louisiana)

    Broader source: Energy.gov [DOE]

    The standards set forth herein have been developed to provide consumers, the Louisiana Public Service Commission, and jurisdictional electric utilities with a uniform method of ensuring reliable...

  15. Thermoelectric Materials By Design: Mechanical Reliability (Agreement...

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

    enable improvements in TE device design, optimization, and maximum reliability. * Next year will involve: - Continued TE material database generation. - TE modeling and...

  16. Improving Wind Turbine Gearbox Reliability: Preprint

    SciTech Connect (OSTI)

    Musial, W.; Butterfield, S.; McNiff, B.

    2007-06-01T23:59:59.000Z

    This paper describes a new research and development initiative to improve gearbox reliability in wind turbines begun at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, USA.

  17. RTI International Develops SSL Luminaire Reliability Model |...

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

    is developing and validating accelerated life testing (ALT) methodologies and a reliability model for predicting the lifetime of integrated solid-state lighting...

  18. Electricity Delivery and Energy Reliability PROGRAM DESCRIPTION

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

    (PSA) program provides expert technical assistance to states, tribes and regions on electricity policies, programs and market mechanisms that increase access to reliable,...

  19. Sandia National Laboratories: Inverter Reliablity Program

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

    simulations to look for corresponding changes in behavioral parameters of ... Inverter Reliability Program On December 18, 2012, in As scientists and engineers improve the...

  20. Sandia National Laboratories: PV Reliability Operations Maintenance...

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

    Maintenance database Sandia-Electric Power Research Institute Partnership Publishes Photovoltaic Reliability Report On January 21, 2014, in Energy, Facilities, Grid...

  1. Sandia National Laboratories: PV Systems Reliability

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

    fluid phenomena of internal inverter components, and their impact on ... Inverter Reliability Program On December 18, 2012, in As scientists and engineers improve the...

  2. NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance...

    Office of Environmental Management (EM)

    Preliminary Disturbance Report The following information represents a partial sequence of events based upon Reliability Coordinator information available to NERC. It is not...

  3. Sandia Energy - Continuous Reliability Enhancement for Wind ...

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

    Enhancement for Wind (CREW): Project Update Home Renewable Energy Energy News Wind Energy News & Events Systems Analysis Continuous Reliability Enhancement for Wind (CREW):...

  4. Comments of North American Electric Reliability Corporation ...

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

    currently developing a report, entitled "Reliability Consideration from Integration of Smart Grid" that will address many of the issues raised in the DOE RFI. North American...

  5. Sandia National Laboratories: Materials & Manufacturing Reliability...

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

    Materials & Manufacturing Reliability Program Biofouling Studies on Sandia's Marine Hydrokinetic Coatings Initiated at PNNL's Sequim Bay On June 26, 2014, in Energy, Materials...

  6. Army Virtual Housing Experience The Army virtual housing experience provides Soldiers and Families world class

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Army Virtual Housing Experience Fact Sheet OVERVIEW The Army virtual housing experience provides Soldiers and Families world class customer focused housing information which allows them to make informed housing choices regarding off-post, privatized or government housing upon receipt of orders by using

  7. An Architecture for Managing Virtual Circuit and Virtual Path Services on ATM Networks

    E-Print Network [OSTI]

    Columbia University

    1 An Architecture for Managing Virtual Circuit and Virtual Path Services on ATM Networks Abstract management architecture that provides the services and is instrumented for network management purposes service monitor- ing and control functions. The network management architecture proposes complete managed

  8. Isis essay review 1 P. N. Edwards Virtual Machines, Virtual Infrastructures

    E-Print Network [OSTI]

    Edwards, Paul N.

    Isis essay review 1 P. N. Edwards Virtual Machines, Virtual Infrastructures: The New Historiography of Information Technology Published in Isis, 1998 Review of: Campbell-Kelly, Martin; Aspray, William. Computer and the author of many books on computer history, including three #12;Isis essay review 2 P. N. Edwards

  9. July 2012July 2012 Cloud Computing and Virtualization:Cloud Computing and Virtualization

    E-Print Network [OSTI]

    Liu, Jiangchuan (JC)

    July 2012July 2012 Cloud Computing and Virtualization:Cloud Computing and Virtualization/26/2633 Recent: CloudRecent: Cloud The fast growth of cloud computing Cloud file storage/synchronization services Google entries about cloud computing: 184,000,000 #12;July 2012July 2012 44/26/2644 Our CloudOur Cloud 7

  10. Competition and Reliability in North American Electricity Markets...

    Energy Savers [EERE]

    Electricity Markets Technical Workshop Competition and Reliability in North American Electricity Markets Technical Workshop Competition and Reliability in North American...

  11. PV Performance and Reliability Validation Capabilities at Sandia...

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

    Performance and Reliability Validation Capabilities at Sandia National Laboratories PV Performance and Reliability Validation Capabilities at Sandia National Laboratories This...

  12. Evaluation of MHTGR fuel reliability

    SciTech Connect (OSTI)

    Wichner, R.P. [Oak Ridge National Lab., TN (United States); Barthold, W.P. [Barthold Associates, Inc., Knoxville, TN (United States)

    1992-07-01T23:59:59.000Z

    Modular High-Temperature Gas-Cooled Reactor (MHTGR) concepts that house the reactor vessel in a tight but unsealed reactor building place heightened importance on the reliability of the fuel particle coatings as fission product barriers. Though accident consequence analyses continue to show favorable results, the increased dependence on one type of barrier, in addition to a number of other factors, has caused the Nuclear Regulatory Commission (NRC) to consider conservative assumptions regarding fuel behavior. For this purpose, the concept termed ``weak fuel`` has been proposed on an interim basis. ``Weak fuel`` is a penalty imposed on consequence analyses whereby the fuel is assumed to respond less favorably to environmental conditions than predicted by behavioral models. The rationale for adopting this penalty, as well as conditions that would permit its reduction or elimination, are examined in this report. The evaluation includes an examination of possible fuel-manufacturing defects, quality-control procedures for defect detection, and the mechanisms by which fuel defects may lead to failure.

  13. The Surface of Acceptability in Virtual Faces

    E-Print Network [OSTI]

    Andreason, Scot Philip

    2013-07-29T23:59:59.000Z

    will appear. The skin has a slight fresnel effect that is dependent on the index of refraction. The fresnel effect is reflected light that can only be seen at the glancing angle of a surface and is dependent on the point of view of the camera (Birn, 2000.... The fresnel effect and IOR are unchanged from the base. 4.7.3. Video Game Shader Figure 8. Video game skin shader. The video game shader (figure 8) is rather unique since it is the only shader that does not simulate a real-world material...

  14. Software Reliability Cases: The Bridge Between Hardware, Software and System Safety and Reliability

    SciTech Connect (OSTI)

    Herrmann, D.S.; Peercy, D.E.

    1999-01-08T23:59:59.000Z

    High integrity/high consequence systems must be safe and reliable; hence it is only logical that both software safety and software reliability cases should be developed. Risk assessments in safety cases evaluate the severity of the consequences of a hazard and the likelihood of it occurring. The likelihood is directly related to system and software reliability predictions. Software reliability cases, as promoted by SAE JA 1002 and 1003, provide a practical approach to bridge the gap between hardware reliability, software reliability, and system safety and reliability by using a common methodology and information structure. They also facilitate early insight into whether or not a project is on track for meeting stated safety and reliability goals, while facilitating an informed assessment by regulatory and/or contractual authorities.

  15. Fundamental mechanisms of micromachine reliability

    SciTech Connect (OSTI)

    DE BOER,MAARTEN P.; SNIEGOWSKI,JEFFRY J.; KNAPP,JAMES A.; REDMOND,JAMES M.; MICHALSKE,TERRY A.; MAYER,THOMAS K.

    2000-01-01T23:59:59.000Z

    Due to extreme surface to volume ratios, adhesion and friction are critical properties for reliability of Microelectromechanical Systems (MEMS), but are not well understood. In this LDRD the authors established test structures, metrology and numerical modeling to conduct studies on adhesion and friction in MEMS. They then concentrated on measuring the effect of environment on MEMS adhesion. Polycrystalline silicon (polysilicon) is the primary material of interest in MEMS because of its integrated circuit process compatibility, low stress, high strength and conformal deposition nature. A plethora of useful micromachined device concepts have been demonstrated using Sandia National Laboratories' sophisticated in-house capabilities. One drawback to polysilicon is that in air the surface oxidizes, is high energy and is hydrophilic (i.e., it wets easily). This can lead to catastrophic failure because surface forces can cause MEMS parts that are brought into contact to adhere rather than perform their intended function. A fundamental concern is how environmental constituents such as water will affect adhesion energies in MEMS. The authors first demonstrated an accurate method to measure adhesion as reported in Chapter 1. In Chapter 2 through 5, they then studied the effect of water on adhesion depending on the surface condition (hydrophilic or hydrophobic). As described in Chapter 2, they find that adhesion energy of hydrophilic MEMS surfaces is high and increases exponentially with relative humidity (RH). Surface roughness is the controlling mechanism for this relationship. Adhesion can be reduced by several orders of magnitude by silane coupling agents applied via solution processing. They decrease the surface energy and render the surface hydrophobic (i.e. does not wet easily). However, only a molecular monolayer coats the surface. In Chapters 3-5 the authors map out the extent to which the monolayer reduces adhesion versus RH. They find that adhesion is independent of RH up to a threshold value, depending on the coating chemistry. The mechanism for the adhesion increase beyond this threshold value is that the coupling agent reconfigures from a surface to a bulk phase (Chapter 3). To investigate the details of how the adhesion increase occurs, the authors developed the mechanics for adhesion hysteresis measurements. These revealed that near-crack tip compression is the underlying cause of the adhesion increase (Chapter 4). A vacuum deposition chamber for silane coupling agent deposition was constructed. Results indicate that vapor deposited coatings are less susceptible to degradation at high RH (Chapter 5). To address issues relating to surfaces in relative motion, a new test structure to measure friction was developed. In contrast to other surface micromachined friction test structures, uniform apparent pressure is applied in the frictional contact zone (Chapter 6). The test structure will enable friction studies over a large pressure and dynamic range. In this LDRD project, the authors established an infrastructure for MEMS adhesion and friction metrology. They then characterized in detail the performance of hydrophilic and hydrophobic films under humid conditions, and determined mechanisms which limit this performance. These studies contribute to a fundamental understanding for MEMS reliability design rules. They also provide valuable data for MEMS packaging requirements.

  16. Demand Response and Electric Grid Reliability

    E-Print Network [OSTI]

    Wattles, P.

    2012-01-01T23:59:59.000Z

    Demand Response and Electric Grid Reliability Paul Wattles Senior Analyst, Market Design & Development, ERCOT CATEE Conference, Galveston October 10, 2012 2 North American Bulk Power Grids CATEE Conference October 10, 2012 ? The ERCOT... adequacy ? ?Achieving more DR participation would . . . displace some generation investments, but would achieve the same level of reliability... ? ?Achieving this ideal requires widespread demand response and market structures that enable loads...

  17. Wind Energy Facility Reliability and Maintenance

    E-Print Network [OSTI]

    Ding, Yu

    Wind Energy Facility Reliability and Maintenance Eunshin Byon, Lewis Ntaimo, Chanan Singh and Yu related to wind energy facility reliability and mainte- nance focused more on qualitative aspects. In this chapter, we provide a comprehensive account of the existing research regarding wind energy facility

  18. Probabilistic Reliable Message Transmission Subodh Kumar

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    Probabilistic Reliable Message Transmission Subodh Kumar January 17, 1996 Abstract Most communication systems require reliable transmission of a sequence of messages over a physical network which can with messages by the sender and they are acknowledged by the receiver. It is known that protocols that use

  19. Advances in Safety, Reliability and Risk Management -Proceedings of the European Safety and Reliability Conference, ESREL 2011 -European Safety and Reliability Conference: Advances in Safety, Reliability and

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Advances in Safety, Reliability and Risk Management - Proceedings of the European Safety, Reliability and Risk Management, ESREL 2011, Troyes : France (2011) In France, more than 99% of failed is global risk management. This allows analysis of the major risks faced by the busi- ness (loss

  20. Engineering Reliability into Web Sites: Google SRE

    E-Print Network [OSTI]

    Tomkins, Andrew

    Engineering Reliability into Web Sites: Google SRE Alex Perry alex.perry@google.com Santa Monica SRE, Google #12;Abstract This talk introduces Site Reliability Engineering (SRE) at Google, explaining team responsibilities by site Failures and instability consuming manpower Engineering being applied

  1. : : ". RSST I Lunar Day Counter Reliability Analysis

    E-Print Network [OSTI]

    Rathbun, Julie A.

    : : ". RSST I Lunar Day Counter Reliability Analysis NO. ATM 846 PAGE 1 REV. MO. OF 10 DATE 12/3/69 This ATM presents a Reliability analysis of the Lunar Day Counter, the Resettable Solid State Timer (RSST equipment. The analysis is based on a parts count, average failure rates and two (2) years operation

  2. NISTIR 7817 A Credential Reliability and

    E-Print Network [OSTI]

    NISTIR 7817 A Credential Reliability and Revocation Model for Federated Identities Hildegard Ferraiolo http://dx.doi.org/10.6028/NIST.IR.7817 #12;NISTIR 7817 A Credential Reliability and Revocation Interagency Report 7817 22 pages (Nov. 2012) Certain commercial entities, equipment, or materials may

  3. Reliable Distributed Computing for Decision Support Systems

    E-Print Network [OSTI]

    Bargiela, Andrzej

    Reliable Distributed Computing for Decision Support Systems Taha Osman, Andrzej Bargiela Department of application tasks on the currently avail- able computing nodes. Distributed Systems Reliability Due decision-support systems such as water distribution net- works, involving hundreds or even thousands

  4. Reliability of underwater hearing thresholds in pinnipeds

    E-Print Network [OSTI]

    Reichmuth, Colleen

    Reliability of underwater hearing thresholds in pinnipeds Brandon L. Southall Long Marine and certain testing parameters (e.g., equipment and research personnel), measured underwater hearing (0.2­6.4 kHz). These data address the reliability of acoustic signal detection measurements over time

  5. NREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering the cost of energy.

    E-Print Network [OSTI]

    the cost of energy. Unintended gearbox failures have a significant impact on the cost of wind farm will result in increased gearbox reliability and an overall reduction in the cost of wind energy. ProjectNREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering

  6. A Test Stand for Ion Sources of Ultimate Reliability

    SciTech Connect (OSTI)

    Enparantza, R.; Uriarte, L.; Romano, P.; Alonso, J.; Ariz, I.; Egiraun, M. [Fundacion Tekniker-IK4, Eibar (Spain); Bermejo, F. J.; Etxebarria, V. [University of the Basque Country, Dpt. Electricity and Electronics, Leioa, Spain, and Consejo Superior de Investgaciones Cientificas, Inst. Estructura de la Materia (Spain); Lucas, J. [Elytt Energy, Portugalete (Spain); Del Rio, J. M. [Jema Group, Lasarte (Spain); Letchford, A.; Faircloth, D. [ISIS Accelerator Division, Rutherford Appleton Laboratory, Didcot (United Kingdom); Stockli, M. [Spallation Neutron Source, Oak Ridge National Lab, Oak Ridge (United States)

    2009-03-12T23:59:59.000Z

    The rationale behind the ITUR project is to perform a comparison between different kinds of H{sup -} ion sources using the same beam diagnostics setup. In particular, a direct comparison will be made in terms of the emittance characteristics of Penning Type sources such as those currently in use in the injector for the ISIS (UK) Pulsed Neutron Source and those of volumetric type such as that driving the injector for the ORNL Spallation Neutron Source (TN, U.S.A.). The endeavour here pursued is thus to build an Ion Source Test Stand where virtually any type of source can be tested and its features measured and, thus compared to the results of other sources under the same gauge. It would be possible then to establish a common ground for effectively comparing different ion sources. The long term objectives are thus to contribute towards building compact sources of minimum emittance, maximum performance, high reliability-availability, high percentage of desired particle production, stability and high brightness. The project consortium is lead by Tekniker-IK4 research centre and partners are companies Elytt Energy and Jema Group. The technical viability is guaranteed by the collaboration between the project consortium and several scientific institutions, such the CSIC (Spain), the University of the Basque Country (Spain), ISIS (STFC-UK), SNS (ORNL-USA) and CEA in Saclay (France)

  7. Ion mobility spectrometer with virtual aperture grid

    DOE Patents [OSTI]

    Pfeifer, Kent B. (Los Lunas, NM); Rumpf, Arthur N. (Albuquerque, NM)

    2010-11-23T23:59:59.000Z

    An ion mobility spectrometer does not require a physical aperture grid to prevent premature ion detector response. The last electrodes adjacent to the ion collector (typically the last four or five) have an electrode pitch that is less than the width of the ion swarm and each of the adjacent electrodes is connected to a source of free charge, thereby providing a virtual aperture grid at the end of the drift region that shields the ion collector from the mirror current of the approaching ion swarm. The virtual aperture grid is less complex in assembly and function and is less sensitive to vibrations than the physical aperture grid.

  8. Understanding the Team Dynamics of an Executive Virtual Team

    E-Print Network [OSTI]

    Riley, Ramona Leonard

    2011-10-21T23:59:59.000Z

    employ virtuality in their work regimen. Therefore, organizations employ virtual executives to work teams with ideal skill sets to effectively persevere and complete tasks through distance, space, and time. The purpose of this study was to identify...

  9. Virtual Mentor American Medical Association Journal of Ethics

    E-Print Network [OSTI]

    Fujimura, Joan

    Virtual Mentor American Medical Association Journal of Ethics August 2012, Volume 14, Number 8: 657, such as a particular genetic variant that might be related www.virtualmentor.org Virtual Mentor, August 2012--Vol 14

  10. Exploring Second Life as a beneficial virtual learning environment 

    E-Print Network [OSTI]

    Haisworth, Reissa

    2008-06-27T23:59:59.000Z

    With the growth of the internet comes the development of virtual worlds which create a perfect setting for meeting new people from around the world, chatting to existing friends and learning. Second Life is a virtual world ...

  11. Presence in a Distributed Virtual Environment for Cooperative Visualization

    E-Print Network [OSTI]

    Blake, Edwin

    Presence in a Distributed Virtual Environment for Cooperative Visualization Juan Casanueva of computer networks and computer graphics technology, Collabora- tive Virtual Environments are becoming-Supported Collaborative Work (CSCW). Collaborative Vir- tual Environments involve the use of a distributed architecture

  12. A circumferential slot virtual impactor for bioaerosol concentration

    E-Print Network [OSTI]

    Adams, Clinton Wayne

    2009-05-15T23:59:59.000Z

    A virtual impactor aerosol concentrator with a circumferential inlet slot has been built and tested. Circumferential slot virtual impactors (CSVIs) have low pressure losses, similar to linear slot impactors, but without particle losses due to end...

  13. The Virtual (Re)Construction of History: Some Epistemological Questions

    E-Print Network [OSTI]

    El Antably, Ahmed

    2010-01-01T23:59:59.000Z

    Antably: The Virtual (Re)Construction of History 14. DoreenMay 1, 2010 THE VIRTUAL (RE)CONSTRUCTION OF HISTORY: SOMEthe use of perspectival constructions that emulate everyday

  14. 2015 SunShot Incubator Virtual Showcase Slides

    Broader source: Energy.gov [DOE]

    Download the slides from the 2015 SunShot Initiative Incubator Virtual Showcase webinar, which occurred March 4, 2015

  15. auditory virtual environments: Topics by E-print Network

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

    impor- tance Liu, Ling 52 Natural Interaction in Virtual Environments Gabriel Zachmann Computer Technologies and Information Sciences Websites Summary: -environment...

  16. Virtual Clay: Haptics-based Deformable Solids of Arbitrary Topology

    E-Print Network [OSTI]

    McDonnell, Kevin

    Virtual Clay: Haptics-based Deformable Solids of Arbitrary Topology Kevin T. McDonnell and Hong Qin|qin}@cs.sunysb.edu Abstract. This paper presents Virtual Clay as a novel, interactive, dy- namic, haptics-based deformable solid of arbitrary topology. Our Virtual Clay methodology is a unique, powerful visual modeling paradigm

  17. Virtual Compass: Relative Positioning To Sense Mobile Social Interactions

    E-Print Network [OSTI]

    Hunt, Galen

    Virtual Compass: Relative Positioning To Sense Mobile Social Interactions Nilanjan Banerjee in availability and ac- curacy. Virtual Compass is a peer-based relative positioning system that relies solely movement. We have im- plemented Virtual Compass on mobile phones and laptops, and we eval- uate it using

  18. Virtualizing Power Cords by Wireless Power Transmission and Energy Harvesting

    E-Print Network [OSTI]

    Tentzeris, Manos

    technology can be called the virtualization of the communication line, wireless power transmissionVirtualizing Power Cords by Wireless Power Transmission and Energy Harvesting Yoshihiro Kawahara1 for the virtualization of power cords for electrical devices. The first approach is a new concept for routing electric

  19. NIST Special Publication 1173 Virtual Cement and Concrete

    E-Print Network [OSTI]

    #12;NIST Special Publication 1173 Virtual Cement and Concrete Testing Laboratory Version 9.5 User;Virtual Cement and Concrete Testing Laboratory Version 9.5 User Guide Jeffrey W. Bullard1 Materials-8615 This document serves as the user's guide for the Virtual Cement and Con- crete Testing Laboratory (VCCTL

  20. Virtual Laboratory for Technology For Fusion Energy Science

    E-Print Network [OSTI]

    VLT Virtual Laboratory for Technology For Fusion Energy Science Stan Milora, ORNL Director, Virtual for Technology For Fusion Energy Science VLT Research MissionVLT Research Mission To contribute to the national;VLT Virtual Laboratory for Technology For Fusion Energy Science OutlineOutline · VLT contributions

  1. Coevolution Produces an Arms Race Among Virtual Plants

    E-Print Network [OSTI]

    Ebner, Marc

    Coevolution Produces an Arms Race Among Virtual Plants Marc Ebner, Adrian Grigore, Alexander He#11 create plants for a virtual environment. The plants are represented as context-free Lin- denmayer systems. OpenGL is used to visualize and evaluate the plants. Our plants have to collect virtual sunlight

  2. Web Based Simulations for Virtual Scientific Experiment: Methodology and Tools

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . These are the keywords. Web based simulation, Virtual Scientific Experiment, e-learning 1. INTRODUCTION Until now Technology for Enhanced Learning 1 #12;Web Based Simulations for Virtual Scientific Experiment: MethodologyWeb Based Simulations for Virtual Scientific Experiment: Methodology and Tools Giovannina Albano

  3. Leadership in self-managing virtual teams Kevin Crowston

    E-Print Network [OSTI]

    Crowston, Kevin

    1 Leadership in self-managing virtual teams Kevin Crowston Syracuse University, School acknowledge the contri- butions of Hala Annabi, Chengetai Masango and James Howison. #12;Leadership in self-managing virtual teams Leadership in self-managing virtual teams Abstract In this paper, we present a theory

  4. Towards a Virtual Environment for Interactive World Building

    E-Print Network [OSTI]

    Towards a Virtual Environment for Interactive World Building Dieter Schmalstieg and Michael|gervautz@cg.tuwien.ac.at http://www.cg.tuwien.ac.at/ Abstract We propose an architecture for virtual environments that is aimed and maintenance of the virtual environment. Users can be present in the environment using software clients

  5. The Virtual Stuntman: Dynamic Characters with a Repertoire of

    E-Print Network [OSTI]

    Panne, M. van de

    is applicable and expected to work properly. Key words: Artificial Life, Virtual Humans, Computer Animation considerable progress in animating virtual humans [1,5], physics-based an- imated characters with a large is the creation of virtual actors that autonomously synthesize realistic human motions and possess a broad

  6. CREATING 3D ANIMATED HUMAN BEHAVIORS FOR VIRTUAL WORLDS

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    i CREATING 3D ANIMATED HUMAN BEHAVIORS FOR VIRTUAL WORLDS Jan M. Allbeck A DISSERTATION in Computer, and a scholar. #12;iv ABSTRACT CREATING 3D ANIMATED HUMAN BEHAVIORS FOR VIRTUAL WORLDS Jan M. Allbeck Norman I. Badler Creating virtual scenarios that simulate a substantial human population with typical and varied

  7. Towards an Intelligent Affective Multimodal Virtual Agent for Uncertain Environments

    E-Print Network [OSTI]

    Baldassarri, Sandra

    . It is based on the integration of Maxine, a powerful multimodal animation engine for managing virtual agents-time animation. 1. INTRODUCTION Most research on social interfaces is related to the design of virtual agents human- computer interface [1, 2]. A virtual agent must be believable: it has to move properly, paying

  8. Perception of Body and Hand Animations for Realistic Virtual Characters

    E-Print Network [OSTI]

    Duchowski, Andrew T.

    Perception of Body and Hand Animations for Realistic Virtual Characters Sophie J¨org Dissertation human is still a big challenge. The motions of a virtual character in a movie or in a game have a large. However, despite great improvements in recent years, creating a persua- sive and highly realistic virtual

  9. Virtual Humans for Animation, Ergonomics, and Simulation Norman Badler

    E-Print Network [OSTI]

    Badler, Norman I.

    Virtual Humans for Animation, Ergonomics, and Simulation Norman Badler Center for Human Modeling speed and control methods needed to portray 3D virtual humans suitable for real interactive applications of Pennsylvania with the Jack system. Various aspects of real­time virtual humans are considered

  10. The Virtual Stuntman: Dynamic Characters with a Repertoire of

    E-Print Network [OSTI]

    Terzopoulos, Demetri

    properly. Key words: Artificial Life, Virtual Humans, Computer Animation, Character Animation, Physics An ambitious goal in the area of physics-based computer animation is the creation of virtual actors virtual humans [1,5], physics-based an- imated characters with a large repertoire of motor skills have so

  11. An Interactive Interface for Directing Virtual Gael Sannier

    E-Print Network [OSTI]

    Pratt, Vaughan

    1015 Lausanne, Switzerland Abstract. Research on Virtual Humans spans from body animation to speech important issues: - Fully integrated virtual humans with facial and body animation, and speech. - A straightforward user interface for designers and directors. VHD system provides a range of virtual human animation

  12. The Director's Lens: An Intelligent Assistant for Virtual Cinematography

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .1 [Multimedia Information Systems]: Animations, Video General Terms Algorithms, Human Factors Keywords Virtual-generated animations, the task of crafting virtual camera work and edits for a sequence of 3D animation remains a timeThe Director's Lens: An Intelligent Assistant for Virtual Cinematography Christophe Lino IRISA

  13. Jacob -An Animated Instruction Agent in Virtual Reality

    E-Print Network [OSTI]

    Nijholt, Anton

    of a 3D virtual environment where an animated human- like agent called Jacob gives instructionJacob - An Animated Instruction Agent in Virtual Reality Marc Evers1, Anton Nijholt1 1 University of virtual reality techniques and in- volves the design and construction of an animated agent in a 3

  14. Virtualizing Operating Systems for Seamless Distributed Environments

    E-Print Network [OSTI]

    Dasgupta, Partha

    Virtualizing Operating Systems for Seamless Distributed Environments 1 Tom Boyd and Partha Dasgupta of the "Computing Communities" project, a joint effort between Arizona State University and New York University. Abstract Applications and operating systems can be augmented with extra functionality by injecting

  15. Collaborative Virtual Environment Standards: A Performance Evaluation

    E-Print Network [OSTI]

    Ottawa, University of

    for each standard varies from graphics and rendering to simulation and network communication. Standards categories: Rendering and Graphics and Communications Middleware. 2.1 Rendering and Graphics These standards1 Collaborative Virtual Environment Standards: A Performance Evaluation Jauvane C. de Oliveira

  16. Collision Avoidance in Virtual Environments through

    E-Print Network [OSTI]

    Beckhaus, Steffi

    no counterpart in VEs. Examples are temperature difference (cold exterior walls radiating coolness we describe a new technique to make users aurally aware of walls surrounding them in a Virtual Interfaces: Auditory (non-speech) feedback. General Terms Design, Experimentation, Human Factors, Performance

  17. Colour dipoles and deeply virtual Compton scattering

    E-Print Network [OSTI]

    R. Sandapen

    2002-07-01T23:59:59.000Z

    I report on an analysis of Deeply Virtual Compton Scattering (DVCS) within the dipole model, done in collaboration with M. McDermott and G. Shaw. The two models considered here are distinct in their structure and implications. They both agree with the available cross-section data on DVCS from HERA. Predictions for various asymmetries are also given.

  18. Prudhoe Bay Oil Production Optimization: Using Virtual

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    1 Prudhoe Bay Oil Production Optimization: Using Virtual Intelligence Techniques, Stage One: Neural total field oil production by optimizing the gas discharge rates and pressures at the separation handling capacity and subsequent oil production. 10 YEAR AVERAGE AMBIENT 1990-2000 & 2001, 2002 Averages

  19. A Virtual Infrastructure for Wireless Sensor Networks

    E-Print Network [OSTI]

    Stojmenovic, Ivan

    &CHAPTER 4 A Virtual Infrastructure for Wireless Sensor Networks STEPHAN OLARIU and QINGWEN XU Old, and wireless communications 107 Handbook of Sensor Networks: Algorithms and Architectures, Edited by I and communication infra- structures, called wireless sensor networks, will have a significant impact on a wide array

  20. DOE Sustainability Awards Best Practices Virtual Workshop

    Broader source: Energy.gov [DOE]

    The Sustainability Performance Office (SPO) will host a virtual best practices workshop on April 23, 2014 (2:00-3:30 PM EDT) to recognize the winners of the 2013 DOE Sustainability Awards. Award winners will present on their accomplishments and answer brief questions on their programs and projects. Please join us in celebrating the 2013 DOE Sustainability Awards winners.

  1. Ames Lab 101: C6: Virtual Engineering

    ScienceCinema (OSTI)

    None

    2012-08-29T23:59:59.000Z

    Ames Laboratory scientist Doug McCorkle explains the importance of virtual engineering and talks about the C6. The C6 is a three-dimensional, fully-immersive synthetic environment residing in the center atrium of Iowa State University's Howe Hall.

  2. A Reconfiguration Language for Virtualized Grid Infrastructures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ´eger, and Jean-Marc Menaud Ascola (EMN/INRIA, LINA) Ecole des Mines de Nantes 4, rue Alfred Kastler 44307 Nantes Systems (DAIS), France (2010)" #12;2 R´emy Pottier, Marc L´eger, and Jean-Marc Menaud virtual machine

  3. A Reconfiguration Language for Virtualized Grid Infrastructures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ´eger, and Jean-Marc Menaud Ascola (EMN/INRIA, LINA) Ecole des Mines de Nantes 4, rue Alfred Kastler 44307 Nantes : 10.1007/978-3-642-13645-0_4 #12;2 R´emy Pottier, Marc L´eger, and Jean-Marc Menaud virtual machine

  4. Adaptive Reliability Analysis of Excavation Problems

    E-Print Network [OSTI]

    Park, Jun Kyung

    2012-10-19T23:59:59.000Z

    . This analysis couples the adaptive design capabilities of the observational method with updated reliability indices, to be used in risk-based design decisions. A probabilistic framework is developed to predict three-dimensional deformation profiles due...

  5. Demand Response For Power System Reliability: FAQ

    SciTech Connect (OSTI)

    Kirby, Brendan J [ORNL

    2006-12-01T23:59:59.000Z

    Demand response is the most underutilized power system reliability resource in North America. Technological advances now make it possible to tap this resource to both reduce costs and improve. Misconceptions concerning response capabilities tend to force loads to provide responses that they are less able to provide and often prohibit them from providing the most valuable reliability services. Fortunately this is beginning to change with some ISOs making more extensive use of load response. This report is structured as a series of short questions and answers that address load response capabilities and power system reliability needs. Its objective is to further the use of responsive load as a bulk power system reliability resource in providing the fastest and most valuable ancillary services.

  6. Reliability-Based Optimization Using Evolutionary Algorithms

    E-Print Network [OSTI]

    Deb, Kalyanmoy

    Uncertainties in design variables and problem parameters are often inevitable and must be considered in an optimization task if reliable optimal solutions are sought. Besides a number of sampling techniques, there exist ...

  7. Reliability Challenges for Solar Energy (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-04-27T23:59:59.000Z

    PV industry can benefit from reliability testing experience of microelectronics industry . Si modules perform well in field; CdTe/CIGS must be sealed to moisture; CPV in product development stage.

  8. PV Module Reliability Research (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-06-01T23:59:59.000Z

    This National Center for Photovoltaics sheet describes the capabilities of its PV module reliability research. The scope and core competencies and capabilities are discussed and recent publications are listed.

  9. Photovoltaic Reliability and Engineering (Revised) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-06-01T23:59:59.000Z

    Capabilities fact sheet for the National Center for Photovoltaics: Photovoltaic Reliability and Engineering. One-sided sheet that includes Scope, Core Competencies and Capabilities, and Contact/Web information.

  10. Sandia National Laboratories: Physics of Reliability: Evaluating...

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

    Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar program Sandia R&D Funded under New DOE SunShot Program On November 27, 2013, in Energy,...

  11. Reliability Issues for Photovoltaic Modules (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-10-01T23:59:59.000Z

    Si modules good in field; new designs need reliability testing. CdTe & CIGS modules sensitive to moisture; carefully seal. CPV in product development stage; benefits from expertise in other industries.

  12. Sandia National Laboratories: increase power system reliability

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

    reliability Sandia, DOE Energy Storage Program, GeneSiC Semiconductor, U.S. Army ARDEC: Ultra-High-Voltage Silicon Carbide Thyristors On March 29, 2013, in Capabilities,...

  13. RELIABILITY IMPROVEMENT OF BART TRAIN CONTROL

    E-Print Network [OSTI]

    Turner, D.B.

    2011-01-01T23:59:59.000Z

    equipment to resolve equipment reliability problems must bereliability problems was seen to be a mandatory first step in improving equipmentreliability of the Bay Area Rapid Tran- sit district's vehicle-borne Automatic Train Control equipment.

  14. Improving Network Reliability: Analysis, Methodology, and Algorithms

    E-Print Network [OSTI]

    Booker, Graham B.

    2010-07-14T23:59:59.000Z

    The reliability of networking and communication systems is vital for the nation's economy and security. Optical and cellular networks have become a critical infrastructure and are indispensable in emergency situations. This dissertation outlines...

  15. Talk to the Virtual Hands: Self-Animated Avatars Improve Communication in Head-Mounted Display Virtual

    E-Print Network [OSTI]

    Talk to the Virtual Hands: Self-Animated Avatars Improve Communication in Head-Mounted Display Virtual Environments Trevor J. Dodds1 *, Betty J. Mohler1 , Heinrich H. Bu¨ lthoff1,2 1 Human Perception¨lthoff HH (2011) Talk to the Virtual Hands: Self-Animated Avatars Improve Communication in Head

  16. February 13, 2008 Virtualized Environments for the Harness High Performance Computing Workbench 1/17 Virtualized Environments for the Harness

    E-Print Network [OSTI]

    Engelmann, Christian

    February 13, 2008 Virtualized Environments for the Harness High Performance Computing Workbench 1/17 Virtualized Environments for the Harness High Performance Computing Workbench Björn Könning1,2, Christian Virtualized Environments for the Harness High Performance Computing Workbench 4/17 Harness HPC Workbench

  17. On the internet grouping for reliable multicasting

    E-Print Network [OSTI]

    Ghanem, Mohamed M.

    1996-01-01T23:59:59.000Z

    ON THE INTERNET GROUPING FOR RELIABLE MULTICASTING A Thesis by MOHAMED M. GHANEM Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1996... Major Subject: Computer Science ON THF, INTERNET GROUPING I'OR RELIABLE MULTICASTING A Thesis by MOHAMED M. GHANEM Submitted to Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved...

  18. Reliability and Functional Availability of HVAC Systems

    E-Print Network [OSTI]

    Myrefelt, S.

    2004-01-01T23:59:59.000Z

    RELIABILITY AND FUNCTIONAL AVAILABILITY OF HVAC SYSTEMS Sonny Myrefelt Dep. of Build. Serv. Eng., KTH, 10044 Stockholm, Sweden, and SKANSKA Sydost, V?xj?, Sweden Summary This paper presents a model to calculate the reliability... system, therefore, there must be sufficient documentation of design airflow rates. The compulsory ventilation checks performed in Sweden have focused on the importance of maintaining the design air flow rates. More about this activity can be seen...

  19. Gearbox Reliability Collaborative (GRC) Description and Loading

    SciTech Connect (OSTI)

    Oyague, F.

    2011-11-01T23:59:59.000Z

    This document describes simulated turbine load cases in accordance to the IEC 61400-1 Ed.3 standard, which is representative of the typical wind turbine design process. The information presented herein is intended to provide a broad understanding of the gearbox reliability collaborative 750kW drivetrain and turbine configuration. In addition, fatigue and ultimate strength drivetrain loads resulting from simulations are presented. This information provides the bases for the analytical work of the gearbox reliability collaborative effort.

  20. Nuclear Power - Control, Reliability and Human Factors

    E-Print Network [OSTI]

    of Actinides: Where Do We Stand with the Accelerator Mass Spectrometry Technique? 167 Mario De Cesare Part 2 Reliability and Failure Mechanisms 187 Chapter 10 Evaluation of Dynamic J-R Curve for Leak Before Break Design of Nuclear Reactor Coolant Piping... Network 6. Autonomous Control for Space 7. Radiation-Hard and Intelligent Optical Fiber Sensors 8. Monitoring Radioactivity 9. Origin and Detection of Actinides ? Reliability and Failure Mechanisms 10. Dynamic J-R Curve for Leak Analysis 11...

  1. Measurement Practices for Reliability and Power Quality

    SciTech Connect (OSTI)

    Kueck, JD

    2005-05-06T23:59:59.000Z

    This report provides a distribution reliability measurement ''toolkit'' that is intended to be an asset to regulators, utilities and power users. The metrics and standards discussed range from simple reliability, to power quality, to the new blend of reliability and power quality analysis that is now developing. This report was sponsored by the Office of Electric Transmission and Distribution, U.S. Department of Energy (DOE). Inconsistencies presently exist in commonly agreed-upon practices for measuring the reliability of the distribution systems. However, efforts are being made by a number of organizations to develop solutions. In addition, there is growing interest in methods or standards for measuring power quality, and in defining power quality levels that are acceptable to various industries or user groups. The problems and solutions vary widely among geographic areas and among large investor-owned utilities, rural cooperatives, and municipal utilities; but there is still a great degree of commonality. Industry organizations such as the National Rural Electric Cooperative Association (NRECA), the Electric Power Research Institute (EPRI), the American Public Power Association (APPA), and the Institute of Electrical and Electronics Engineers (IEEE) have made tremendous strides in preparing self-assessment templates, optimization guides, diagnostic techniques, and better definitions of reliability and power quality measures. In addition, public utility commissions have developed codes and methods for assessing performance that consider local needs. There is considerable overlap among these various organizations, and we see real opportunity and value in sharing these methods, guides, and standards in this report. This report provides a ''toolkit'' containing synopses of noteworthy reliability measurement practices. The toolkit has been developed to address the interests of three groups: electric power users, utilities, and regulators. The report will also serve to support activities to develop and share information among industry and regulatory participants about critical resources and practices. The toolkit has been developed by investigating the status of indices and definitions, surveying utility organizations on information sharing, and preparing summaries of reliability standards and monitoring requirements--the issues, needs, work under way, existing standards, practices and guidelines--for the following three classifications: (1) terms and definitions of reliability; (2) power quality standards, guidelines, and measurements; and (3) activities and organizations developing and sharing information on distribution reliability. As these synopses of reliability measurement practices are provided, it must be noted that an economic penalty may be associated with requiring too high a reliability level from the distribution system for all customers. It may be appropriate for the distribution system to supply only some base, generally accepted level of reliability. This base level would be adequate for the majority of customers. Users who need a higher level may find it economical to supply using distributed energy resources (DER) and other local solutions to reliability and power quality needs. Local solutions implemented by the customer may be the most cost-effective method for addressing the more stringent needs of a digital economy. These local solutions include energy storage, small distributed generators, and microgrids. This report also considers the market's role in addressing reliability issues and requirements. The customer's needs are discussed in view of issues such as power quality requirements of digital electronic equipment, the cost of outages, the cost of storage and new infrastructure, and natural gas prices. The market role in addressing these issues and requirements is explored. The economic considerations associated with the reliability issues are discussed, as well as the levels at which these economic decisions could be made. Finally, a discussion is provided of the role DER could play in addressing

  2. Measuring eating disorder attitudes and behaviors: a reliability generalization study

    E-Print Network [OSTI]

    Pearson, Crystal Anne

    2009-05-15T23:59:59.000Z

    I used reliability generalization procedures to determine the mean score reliability of the Eating Disorder Inventory (EDI), the Eating Attitudes Test (EAT), and the Bulimia Test (BULIT). Reliability generalization is a type of meta-analysis used...

  3. Basic concepts defining the property of ''reliability'' for energy systems

    SciTech Connect (OSTI)

    Rudenko, Yu.N.; Sin'chugov, F.I.; Smirnov, E.P.

    1981-01-01T23:59:59.000Z

    The basic concepts defining the complex property of ''reliability'' for energy systems (electric-power and pipeline systems) are considered; they include the properties, states, and events that characterize reliability as well as the reliability indices.

  4. Virtual infrastructure for wireless ad hoc networks

    E-Print Network [OSTI]

    Gilbert, Seth, 1976-

    2007-01-01T23:59:59.000Z

    One of the most significant challenges introduced by ad hoc networks is coping with the unpredictable deployment, uncertain reliability, and erratic communication exhibited by emerging wireless networks and devices. The ...

  5. Office of Electricity Delivery and Energy Reliability Recovery...

    Energy Savers [EERE]

    Electricity Delivery and Energy Reliability Recovery Program Plan Office of Electricity Delivery and Energy Reliability Recovery Program Plan Microsoft Word - OE PSRP June 5 2009...

  6. Effect of Jatropha based Biodiesel, on Engine Hardware Reliability...

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

    Jatropha based Biodiesel, on Engine Hardware Reliability, Emission and Performance Effect of Jatropha based Biodiesel, on Engine Hardware Reliability, Emission and Performance...

  7. Office of Electricity Delivery & Energy Reliability FY 2012 Budget...

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

    & Energy Reliability FY 2012 Budget Request Presentation Office of Electricity Delivery & Energy Reliability FY 2012 Budget Request Presentation Presentation by Patricia Hoffman of...

  8. An environmental sample chamber for reliable scanning transmission...

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

    environmental sample chamber for reliable scanning transmission x-ray microscopy measurements under water vapor. An environmental sample chamber for reliable scanning transmission...

  9. Improving the Reliability and Resiliency of the US Electric Grid...

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

    Improving the Reliability and Resiliency of the US Electric Grid: SGIG Article in Metering International, March 2012 Improving the Reliability and Resiliency of the US Electric...

  10. The Business Case for Fuel Cells 2013: Reliability, Resiliency...

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

    3: Reliability, Resiliency & Savings The Business Case for Fuel Cells 2013: Reliability, Resiliency & Savings This report, compiled by Fuel Cells 2000 with support from the Fuel...

  11. Reliability of islanded microgrids with stochastic generation and prioritized load

    E-Print Network [OSTI]

    Marden, Mirjana Milosevic

    The potential to improve distribution system reliability is a primary motivation behind the development and deployment of microgrids. Previous studies have illustrated substantial reliability benefits of dispatchable ...

  12. Thermal Stress and Reliability for Advanced Power Electronics...

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

    Performance and Reliability of Bonded Interfaces Physics of Failure of Electrical Interconnects Thermal Stress and Reliability for Advanced Power Electronics and Electric Machines...

  13. Now Available: Smart Grid Investments Improve Grid Reliability...

    Energy Savers [EERE]

    Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Now Available: Smart Grid Investments Improve Grid Reliability, Resilience, and...

  14. Letter from Pepco Holdings Regarding the Reliability of Electric...

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

    from Pepco Holdings Regarding the Reliability of Electric Service in the District of Columbia Letter from Pepco Holdings Regarding the Reliability of Electric Service in the...

  15. U.S. gasoline prices unchanged (short version)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices continueshort version)

  16. U.S. gasoline prices unchanged (short version)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices continueshort version)gasoline prices

  17. U.S. gasoline prices unchanged (short version)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices continueshort version)gasoline

  18. U.S. gasoline prices unchanged (short version)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices continueshort version)gasolinegasoline

  19. Integration of NDE Reliability and Fracture Mechanics

    SciTech Connect (OSTI)

    Becker, F. L.; Doctor, S. R.; Heas!er, P. G.; Morris, C. J.; Pitman, S. G.; Selby, G. P.; Simonen, F. A.

    1981-03-01T23:59:59.000Z

    The Pacific Northwest Laboratory is conducting a four-phase program for measuring and evaluating the effectiveness and reliability of in-service inspection (lSI} performed on the primary system piping welds of commercial light water reactors (LWRs). Phase I of the program is complete. A survey was made of the state of practice for ultrasonic rsr of LWR primary system piping welds. Fracture mechanics calculations were made to establish required nondestrutive testing sensitivities. In general, it was found that fatigue flaws less than 25% of wall thickness would not grow to failure within an inspection interval of 10 years. However, in some cases failure could occur considerably faster. Statistical methods for predicting and measuring the effectiveness and reliability of lSI were developed and will be applied in the "Round Robin Inspections" of Phase II. Methods were also developed for the production of flaws typical of those found in service. Samples fabricated by these methods wilI be used in Phase II to test inspection effectiveness and reliability. Measurements were made of the influence of flaw characteristics {i.e., roughness, tightness, and orientation) on inspection reliability. These measurernents, as well as the predictions of a statistical model for inspection reliability, indicate that current reporting and recording sensitivities are inadequate.

  20. Culture Representation in Human Reliability Analysis

    SciTech Connect (OSTI)

    David Gertman; Julie Marble; Steven Novack

    2006-12-01T23:59:59.000Z

    Understanding human-system response is critical to being able to plan and predict mission success in the modern battlespace. Commonly, human reliability analysis has been used to predict failures of human performance in complex, critical systems. However, most human reliability methods fail to take culture into account. This paper takes an easily understood state of the art human reliability analysis method and extends that method to account for the influence of culture, including acceptance of new technology, upon performance. The cultural parameters used to modify the human reliability analysis were determined from two standard industry approaches to cultural assessment: Hofstede’s (1991) cultural factors and Davis’ (1989) technology acceptance model (TAM). The result is called the Culture Adjustment Method (CAM). An example is presented that (1) reviews human reliability assessment with and without cultural attributes for a Supervisory Control and Data Acquisition (SCADA) system attack, (2) demonstrates how country specific information can be used to increase the realism of HRA modeling, and (3) discusses the differences in human error probability estimates arising from cultural differences.

  1. Heavy quarks in deeply virtual Compton scattering

    E-Print Network [OSTI]

    Jens D. Noritzsch

    2003-12-11T23:59:59.000Z

    A detailed study of the heavy quark h=c,b,... contributions to deeply virtual Compton scattering is performed at both the amplitude and the cross section level, and their phenomenological relevance is discussed. For this purpose I calculate the lowest order off-forward photon-gluon scattering amplitude with a massive quark loop and the corresponding hard scattering coefficients. In a first numerical analysis these fixed order perturbation theory results are compared with the conventional intrinsic "massless" parton approach considering generalized parton distributions for the heavy quarks. The differences between these two prescriptions can be quite significant, especially at small skewedness where the massless approach largely overestimates the deeply virtual Compton scattering cross section.

  2. Controlled entanglement routing between two virtual pathways

    E-Print Network [OSTI]

    Qiang Zhou; Shuai Dong; Wei Zhang; Lixing You; Yuhao He; Weijun Zhang; Yidong Huang; Jiangde Peng

    2014-07-16T23:59:59.000Z

    We demonstrate controlled entanglement routing between bunching and antibunching path-entangled two-photon states in an unbalanced Mach-Zehnder interferometer (UMZI), in which the routing process is controlled by the relative phase difference in the UMZI. Regarding bunching and antibunching path-entangled two-photon states as two virtual ports, we can consider the UMZI as a controlled entanglement router, which bases on the coherent manipulation of entanglement. Half of the entanglement within the input two-photon state is coherently routed between the two virtual ports, while the other is lost due to the time distinguishability introduced by the UMZI. Pure bunching or antibunching path entangled two-photon states are obtained based on this controlled entanglement router. The results show that we can employ the UMZI as general entanglement router for practical quantum information application.

  3. 3D Spectroscopy and the Virtual Observatory

    E-Print Network [OSTI]

    Bryan W. Miller

    2007-08-15T23:59:59.000Z

    Integral field, or 3D, spectroscopy is the technique of obtaining spectral information over a two-dimensional, hopefully contiguous, field of view. While there is some form of astronomical 3D spectroscopy at all wavelengths, there has been a rapid increase in interest in optical and near-infrared 3D spectroscopy. This has resulted in the deployment of a large variety of integral-field spectrographs on most of the large optical/infrared telescopes. The amount of IFU data available in observatory archives is large and growing rapidly. The complications of treating IFU data as both imaging and spectroscopy make it a special challenge for the virtual observatory. This article describes the various techniques of optical and near-infrared spectroscopy and some of the general needs and issues related to the handling of 3D data by the virtual observatory.

  4. Spin effects in deeply virtual Compton scattering

    E-Print Network [OSTI]

    A. V. Belitsky; A. Kirchner; D. Müller

    2001-06-21T23:59:59.000Z

    We consider the azimuthal angle dependence in the cross section of the hard leptoproduction of a photon on a nucleon target. We show that this dependence allows to define observables that isolate the twist-two and twist-three sectors in the deeply virtual Compton scattering amplitude. All twist-two and twist-three Compton form factors can be extracted from measurements of the charge odd part of the polarized cross section and give access to all generalized parton distributions.

  5. Knowledge Discovery Framework for the Virtual Observatory

    E-Print Network [OSTI]

    Thomas, Brian; Huang, Zenping; Teuben, Peter

    2015-01-01T23:59:59.000Z

    We describe a framework that allows a scientist-user to easily query for information across all Virtual Observatory (VO) repositories and pull it back for analysis. This framework hides the gory details of meta-data remediation and data formatting from the user, allowing them to get on with search, retrieval and analysis of VO data as if they were drawn from a single source using a science based terminology rather than a data-centric one.

  6. Deeply virtual Compton scattering off nuclei

    SciTech Connect (OSTI)

    Voutier, Eric

    2009-01-01T23:59:59.000Z

    Deeply virtual Compton scattering (DVCS) is the golden exclusive channel for the study of the partonic structure of hadrons, within the universal framework of generalized parton distributions (GPDs). This paper presents the aim and general ideas of the DVCS experimental program off nuclei at the Jefferson Laboratory. The benefits of the study of the coherent and incoherent channels to the understanding of the EMC (European Muon Collaboration) effect are discussed, along with the case of nuclear targets to access neutron GPDs.

  7. Software engineering practices for control system reliability

    SciTech Connect (OSTI)

    S. K. Schaffner; K. S White

    1999-04-01T23:59:59.000Z

    This paper will discuss software engineering practices used to improve Control System reliability. The authors begin with a brief discussion of the Software Engineering Institute's Capability Maturity Model (CMM) which is a framework for evaluating and improving key practices used to enhance software development and maintenance capabilities. The software engineering processes developed and used by the Controls Group at the Thomas Jefferson National Accelerator Facility (Jefferson Lab), using the Experimental Physics and Industrial Control System (EPICS) for accelerator control, are described. Examples are given of how their procedures have been used to minimized control system downtime and improve reliability. While their examples are primarily drawn from their experience with EPICS, these practices are equally applicable to any control system. Specific issues addressed include resource allocation, developing reliable software lifecycle processes and risk management.

  8. ASCE Specialty Conference on Probabilistic Mechanics and Structural Reliability ESTIMATING STRUCTURAL RELIABILITY UNDER HURRICANE WIND HAZARD

    E-Print Network [OSTI]

    Balaji, Rajagopalan

    STRUCTURAL RELIABILITY UNDER HURRICANE WIND HAZARD: APPLICATIONS TO WOOD STRUCTURES Balaji Rajagopalan.frangopol@colorado.edu Abstract A stochastic nonparametric framework to estimate structural reliability under hurricane wind Natural hazards in general and hurricanes in particular, lead to loss of life and tremendous property

  9. Accepted for publication in Reliability Engineering and System Safety Analyzing the topological, electrical and reliability

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Accepted for publication in Reliability Engineering and System Safety Analyzing the topological, electrical and reliability characteristics of a power transmission system for identifying its critical.zio@polimi.it Abstract The subject of this paper is the analysis of an electrical transmission system with the objective

  10. Technique for Measuring Hybrid Electronic Component Reliability

    SciTech Connect (OSTI)

    Green, C.C.; Hernandez, C.L.; Hosking, F.M.; Robinson, D.; Rutherford, B.; Uribe, F.

    1999-01-01T23:59:59.000Z

    Materials compatibility studies of aged, engineered materials and hardware are critical to understanding and predicting component reliability, particularly for systems with extended stockpile life requirements. Nondestructive testing capabilities for component reliability would significantly enhance lifetime predictions. For example, if the detection of crack propagation through a solder joint can be demonstrated, this technique could be used to develop baseline information to statistically determine solder joint lifelengths. This report will investigate high frequency signal response techniques for nondestructively evaluating the electrical behavior of thick film hybrid transmission lines.

  11. Reliability Technology earns prestigious Los Alamos award

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently ApprovedReliability Technology earns award Reliability Technology

  12. RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS FOR THE DEEP UNDERWATER MUON AND NEUTRINO DETECTION SYSTEM

    E-Print Network [OSTI]

    Leskovar, B.

    2010-01-01T23:59:59.000Z

    1980 RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS10548 RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS™**"* ' Reliability Considerations of Electronics Components

  13. Reliable Process for Security Policy Deployment

    E-Print Network [OSTI]

    Preda, Stere; Cuppens, Frederic; Garcia-Alfaro, Joaquin; Toutain, Laurent

    2009-01-01T23:59:59.000Z

    We focus in this paper on the problem of configuring and managing network security devices, such as Firewalls, Virtual Private Network (VPN) tunnels, and Intrusion Detection Systems (IDSs). Our proposal is the following. First, we formally specify the security requirements of a given system by using an expressive access control model. As a result, we obtain an abstract security policy, which is free of ambiguities, redundancies or unnecessary details. Second, we deploy such an abstract policy through a set of automatic compilations into the security devices of the system. This proposed deployment process not only simplifies the security administrator's job, but also guarantees a resulting configuration free of anomalies and/or inconsistencies.

  14. On the reliability of seasonal forecasts Antje Weisheimer

    E-Print Network [OSTI]

    Stevenson, Paul

    to plant in the coming season #12;Antje Weisheimer EQUIP workshop 14 March 2013 Reliability of reliability #12;Antje Weisheimer EQUIP workshop 14 March 2013 category 5 Perfect reliability Uncertainty ranges do include perfect reliability slope #12;Antje Weisheimer EQUIP workshop

  15. A Hierarchical Model for Estimating the Reliability of Complex Systems

    E-Print Network [OSTI]

    Reese, Shane

    an approximation to the joint posterior distribution on the total system reliability was obtained. Many reliability or bounding moments of the system reliability posterior distribution (Cole (1975), Mastran (1976), DostalA Hierarchical Model for Estimating the Reliability of Complex Systems Valen E. Johnson, Todd L

  16. Towards Real Time Virtual Human Life Simulations Etienne de Sevin, Marcelo Kallmann and Daniel Thalmann

    E-Print Network [OSTI]

    Kallmann, Marcelo

    Life, Agents, Virtual Humans, Virtual Environments, Behavioral Animation, Classifier Systems, ObjectTowards Real Time Virtual Human Life Simulations Etienne de Sevin, Marcelo Kallmann and Daniel for the development of artificial virtual human life simulations. Our main goal is to have virtual human actors living

  17. Interval Analysis and Reliability in Robotics

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    be highly reliable (i.e. for a robot used in surgical applications). The sources of uncertainties will restrict ourself in this paper to industrial robot. These type of robots have a base that is attached the mechanism motion). There are two main classes of industrial robots mechani- cal architecture: serial

  18. New correlation calculates reliable paraffin solubilities

    SciTech Connect (OSTI)

    Yaws, C.L.; Pan, X. (Lamar Univ., Beaumont, TX (US))

    1991-04-08T23:59:59.000Z

    A new correlation based on boiling point has been developed which accurately calculates paraffin solubilities in water. The correlation provides reliable solubility values down to very low concentrations (parts per million and less), for which the API correlation is not accurate. It can be used for initial engineering studies, including those involving health, safety, and environmental considerations.

  19. Optical fiber reliability models M. John Matthewson

    E-Print Network [OSTI]

    Matthewson, M. John

    3 Optical fiber reliability models M. John Matthewson Fiber Optic Materials Research Program Systems containing optical fiber have design lives on the order of decades so that models for assessing and promising areas for future work are proposed. 1. INTRODUCTION Mechanical failure of optical fiber must

  20. Implementing the Reliable Server Pooling Thomas Dreibholz

    E-Print Network [OSTI]

    Dreibholz, Thomas

    Implementing the Reliable Server Pooling Framework Thomas Dreibholz University of Duisburg Server Pooling (RSerPool) pro- tocol suite currently under standardization by the IETF is designed, configuring, accessing and monitoring pools of server resources. But RSerPool is not only able to manage pools

  1. Grid Reliability- An Electric Utility Company's Perspective

    Broader source: Energy.gov [DOE]

    Presentation—given at the Federal Utility Partnership Working Group (FUPWG) Fall 2008 meeting—covers Southern Company's business continuity, North American Electric Reliability Corporation (NERC) cybersecurity, and homeland security as well as physical recovery after a major outage, and five questions to ask your local utility.

  2. Y AND RELIABILITY: LOGO MANUAL COLOR SCHEME

    E-Print Network [OSTI]

    Bordenstein, Seth

    AND RELIABILITY: LOGO MANUAL COLOR SCHEME TYPOGRAPHY RECOMMENDED DISPLAY SPACE PMS 131C PMS COOL GRAY 11C VERSION HORIZONTAL 1J COLOR SCHEME R=203 G=163 B=57 C=21 M=34 Y=93 K=2 20,0 @Me Nas $10M in equipment Machine shop equipped conference facility All-purpose machine shop Skilled engineering staff

  3. Invited Paper GaN HEMT reliability

    E-Print Network [OSTI]

    del Alamo, Jesús A.

    Invited Paper GaN HEMT reliability J.A. del Alamo *, J. Joh Microsystems Technology Laboratories mechanism recently identified in GaN high-electron mobility transistors subject to electrical stress. Under high voltage, it has been found that electrically active defects are generated in the AlGaN barrier

  4. "Reliability, Resiliency, and Restoration for Smarter Grid

    E-Print Network [OSTI]

    Ohta, Shigemi

    "Reliability, Resiliency, and Restoration for Smarter Grid Workshop" Save the Date April 3 and 4 at mohlsen@bnl.gov "The Resilient Smart Grid" to be held at Brookhaven National Laboratory Upton, Long Island://www.bnl.gov/maps/. This is the 5th workshop that BNL is hosting on the Smart Grid. This Workshop will build on the previous

  5. Virtual Workshops: Using Today's Networking Tools to Train Tomorrow's Experts

    E-Print Network [OSTI]

    Kane, J. F.; Bailey, W. F.

    VIRTUAL WORKSHOPS: USING TODAY'S NETWORKING TOOLS TO TRAIN TOMORROW'S EXPERTS John F. Kane, Jr., PE, CEM Senior Consulting Engineer E. 1. du Pont de Nemours and Company, Inc. Charlotte, North Carolina ABSTRACT Training and development... ing," while others call it "virtual presentations." Regardless, a virtual workshop - as we have defmed the term - is a new way to transfer rich and useful information from a subject matter expert to a very large group of people who have a genuine...

  6. applied virtual reality: Topics by E-print Network

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

    of immersive applications, which provides a virtual reality system-independent operating environment. The thesis focuses on the approach taken to specify, design, and...

  7. applying virtual reality: Topics by E-print Network

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

    of immersive applications, which provides a virtual reality system-independent operating environment. The thesis focuses on the approach taken to specify, design, and...

  8. Employing Virtualization in Library Computing: Use Cases and Lessons Learned

    E-Print Network [OSTI]

    Hutt, Arwen E.; Stuart, Michael; Suchy, Daniel; Westbrook, Bradley D.

    2009-01-01T23:59:59.000Z

    cataloging. Not only are types of library materials changingincreasing variety of library material types. Most notableLibraries. 2 Virtualization can be implemented using Type 1

  9. Deeply virtual Compton scattering and generalized parton distributions

    E-Print Network [OSTI]

    S. Fazio; R. Fiore; L. L. Jenkovszky

    2008-12-16T23:59:59.000Z

    We present a comparison of a recently proposed model, which describes the Deeply Virtual Compton Scattering amplitude, to the HERA data.

  10. The Virtual (Re)Construction of History: Some Epistemological Questions

    E-Print Network [OSTI]

    El Antably, Ahmed

    2010-01-01T23:59:59.000Z

    virtual environments as a new medium for representingvirtual environments as a new medium for representingmedium that are specific to the society in which the environment

  11. Teaching Variation Reduction Using a Virtual Manufacturing Environment

    E-Print Network [OSTI]

    Zhu, Mu

    short courses. KEY WORDS: Simulation; Six Sigma; Variation reduction; Virtual environment. 1 by adopting a systematic frame- work like DMAIC (define, measure, analyze, improve, control) in Six Sigma

  12. Proposed Virtual Center for Excellence for Metal Hydride Development...

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

    Virtual Center for Excellence for Metal Hydride Development Presentation from the Hydrogen Storage Pre-Solicitation Meeting held June 19, 2003 in Washington, DC....

  13. Virtual Center of Excellence for Hydrogen Storage - Chemical...

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

    funded) * Advanced carbon materials (LDRD) - (we propose a support role in the carbon materials virtual center) * Electrochemically active barrier liner for composite storage tanks...

  14. T-588: HP Virtual SAN Appliance Stack Overflow

    Broader source: Energy.gov [DOE]

    A vulnerability has been reported in HP StorageWorks P4000 Virtual SAN Appliance Software, which can be exploited by malicious people to compromise a vulnerable system.

  15. I/O Performance of Virtualized Cloud Environments

    E-Print Network [OSTI]

    Ghoshal, Devarshi

    2013-01-01T23:59:59.000Z

    Technologies in High Performance Computing. In 2nd IEEEusing virtual high-performance computing: a case study usingAnalysis of High Performance Computing Applications on the

  16. A Stochastic Reactor Based Virtual Engine Model Employing Detailed...

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

    A Stochastic Reactor Based Virtual Engine Model Employing Detailed Chemistry for Kinetic Studies of In-Cylinder Combustion and Exhaust Aftertreatment A Stochastic Reactor Based...

  17. Energy efficient mapping of virtualEnergy efficient mapping of virtual machinesmachines

    E-Print Network [OSTI]

    Lefèvre, Laurent

    for energy savings in cloud 2 Violaine Villebonnet GreenDays@Lille 28th November 2013 Problematic algorithms that best fit with reality Energy efficient mapping of virtual machines Violaine Villebonnet Green Conditioning Reduce the energy consumption of the whole datacenter Violaine Villebonnet GreenDays@Lille 28th

  18. Virtual interactive simulation and inspection tool (VISIT) Modeling sensor networks in a virtual city

    SciTech Connect (OSTI)

    Moore, D. M. (David M.)

    2004-01-01T23:59:59.000Z

    The U.S. government is currently investigating the deployment of radiation sensor systems to protect cities against nuclear and radiological threats. Due to the high cost of installing such systems, there is a need to analyze the effectiveness of a variety of sensor configurations in detecting such threats before installing such systems in the field. The Virtual Interactive Simulation and Inspection Tool (VISIT) is a computer program developed for various virtual-reality applications in national security programs, and is presently being adapted to test the efficacy of a variety of sensor configurations in a virtual urban environment. The value of a particular sensor configuration will be assessed by running virtual exercises in which a threat team will choose a radiological device and route to a target and a detection team will specify the locations and types of sensors to be placed in the city to attempt detection of the threat prior to it reaching its target. This paper will discuss the VISIT package, its proposed application, and lessons learned from modeling done to date.

  19. Validating agent based models through virtual worlds.

    SciTech Connect (OSTI)

    Lakkaraju, Kiran; Whetzel, Jonathan H.; Lee, Jina [Sandia National Laboratories, Livermore, CA; Bier, Asmeret Brooke; Cardona-Rivera, Rogelio E. [North Carolina State University, Raleigh, NC; Bernstein, Jeremy Ray Rhythm [Gaikai, Inc., Aliso Viejo, CA

    2014-01-01T23:59:59.000Z

    As the US continues its vigilance against distributed, embedded threats, understanding the political and social structure of these groups becomes paramount for predicting and dis- rupting their attacks. Agent-based models (ABMs) serve as a powerful tool to study these groups. While the popularity of social network tools (e.g., Facebook, Twitter) has provided extensive communication data, there is a lack of ne-grained behavioral data with which to inform and validate existing ABMs. Virtual worlds, in particular massively multiplayer online games (MMOG), where large numbers of people interact within a complex environ- ment for long periods of time provide an alternative source of data. These environments provide a rich social environment where players engage in a variety of activities observed between real-world groups: collaborating and/or competing with other groups, conducting battles for scarce resources, and trading in a market economy. Strategies employed by player groups surprisingly re ect those seen in present-day con icts, where players use diplomacy or espionage as their means for accomplishing their goals. In this project, we propose to address the need for ne-grained behavioral data by acquiring and analyzing game data a commercial MMOG, referred to within this report as Game X. The goals of this research were: (1) devising toolsets for analyzing virtual world data to better inform the rules that govern a social ABM and (2) exploring how virtual worlds could serve as a source of data to validate ABMs established for analogous real-world phenomena. During this research, we studied certain patterns of group behavior to compliment social modeling e orts where a signi cant lack of detailed examples of observed phenomena exists. This report outlines our work examining group behaviors that underly what we have termed the Expression-To-Action (E2A) problem: determining the changes in social contact that lead individuals/groups to engage in a particular behavior. Results from our work indicate that virtual worlds have the potential for serving as a proxy in allocating and populating behaviors that would be used within further agent-based modeling studies.

  20. Deeply Virtual Compton Scattering off the neutron

    E-Print Network [OSTI]

    M. Mazouz; A. Camsonne; C. Muñoz Camacho; for the Jefferson Lab Hall A collaboration

    2007-12-12T23:59:59.000Z

    The present experiment exploits the interference between the Deeply Virtual Compton Scattering (DVCS) and the Bethe-Heitler processes to extract the imaginary part of DVCS amplitudes on the neutron and on the deuteron from the helicity-dependent D$({\\vec e},e'\\gamma)X$ cross section measured at $Q^2$=1.9 GeV$^2$ and $x_B$=0.36. We extract a linear combination of generalized parton distributions (GPDs) particularly sensitive to $E_q$, the least constrained GPD. A model dependent constraint on the contribution of the up and down quarks to the nucleon spin is deduced.

  1. Diffraction Patterns in Deeply Virtual Compton Scattering

    E-Print Network [OSTI]

    Asmita Mukherjee

    2006-11-30T23:59:59.000Z

    We report on a calculation to show that the Fourier transform of the Deeply Virtual Compton Scattering (DVCS) amplitude with respect to the skewness variable \\zeta at fixed invariant momentum transfer squared t gives results that are analogous to the diffractive scattering of a wave in optics. As a specific example, we utilize the quantum fluctuations of a fermion state at one loop in QED to obtain the behavior of the DVCS amplitude for electron-photon scattering. We then simulate the wavefunctions for a hadron by differentiating the above LFWFs with respect to M^2 and study the corresponding DVCS amplitudes in light-front longitudinal space.

  2. Deeply Virtual Compton Scattering at HERA II

    E-Print Network [OSTI]

    Laurent Schoeffel

    2007-05-22T23:59:59.000Z

    A new measurement is presented of elastic deeply virtual Compton scattering (DVCS) based on data taken by the H1 detector during the complete HERA II period. The data are well described by QCD based calculations. For the first time, a beam charge asymmetry is obtained in a colliding mode, using data recorded in $e^-p$ and $e^+p$. A significant non zero value is measured, related to the interference of QCD and QED processes, namely the DVCS and Bethe-Heitler reactions.

  3. Virtual Compton Scattering off the nucleon

    E-Print Network [OSTI]

    P. A. M. Guichon; M. Vanderhaeghen

    1998-06-08T23:59:59.000Z

    We review the recent developments of virtual Compton scattering. We focus on the kinematical regimes which look the most promising. The threshold regime gives access to the generalized polarizabilities of the proton. The hard scattering regime allows tests of perturbative QCD predictions and of the valence quark wave function. The Bjorken regime is closely related to deep inelastic scattering. It gives access to the off-forward parton distributions which generalize the ordinary parton distributions and may shed a new light on the spin problem. For each regime we discuss the experimental perspectives and the role of the Bethe-Heitler background.

  4. The Virtual Observatory and Grid in Spain

    E-Print Network [OSTI]

    J. D. Santander-Vela

    2008-07-08T23:59:59.000Z

    The Virtual Observatory (VO) is nearing maturity, and in Spain the Spanish VO (SVO) exists since June 2004. There have also been numerous attempts at providing more or less encompassing grid initiatives at the national level, and finally Spain has an official National Grid Initiative (NGI). In this article we will show the VO and Grid development status of nationally funded initiatives in Spain, and we will hint at potential joint VO-Grid use-cases to be developed in Spain in the near future.

  5. Virtual environments for nuclear power plant design

    SciTech Connect (OSTI)

    Brown-VanHoozer, S.A.; Singleterry, R.C. Jr.; King, R.W. [and others

    1996-03-01T23:59:59.000Z

    In the design and operation of nuclear power plants, the visualization process inherent in virtual environments (VE) allows for abstract design concepts to be made concrete and simulated without using a physical mock-up. This helps reduce the time and effort required to design and understand the system, thus providing the design team with a less complicated arrangement. Also, the outcome of human interactions with the components and system can be minimized through various testing of scenarios in real-time without the threat of injury to the user or damage to the equipment. If implemented, this will lead to a minimal total design and construction effort for nuclear power plants (NPP).

  6. Spring 2015 Virtual Toolkit | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssues DOE's Nuclear EnergySmartOverviewEnergySpotlightingVirtual

  7. Structural Reliability: Assessing the Condition and Reliability of Casing in Compacting Reservoirs

    E-Print Network [OSTI]

    Chantose, Prasongsit

    2012-02-14T23:59:59.000Z

    . Effective stress may exceed rock compressive strength, inducing compaction. Wells in compacting reservoirs risk high failure and deformation rates. This project introduces the concept of structural reliability to quantify casing failure risks in compacting...

  8. Human Reliability Analysis for Design: Using Reliability Methods for Human Factors Issues

    SciTech Connect (OSTI)

    Ronald Laurids Boring

    2010-11-01T23:59:59.000Z

    This paper reviews the application of human reliability analysis methods to human factors design issues. An application framework is sketched in which aspects of modeling typically found in human reliability analysis are used in a complementary fashion to the existing human factors phases of design and testing. The paper provides best achievable practices for design, testing, and modeling. Such best achievable practices may be used to evaluate and human system interface in the context of design safety certifications.

  9. Sample sizes for confidence limits for reliability.

    SciTech Connect (OSTI)

    Darby, John L.

    2010-02-01T23:59:59.000Z

    We recently performed an evaluation of the implications of a reduced stockpile of nuclear weapons for surveillance to support estimates of reliability. We found that one technique developed at Sandia National Laboratories (SNL) under-estimates the required sample size for systems-level testing. For a large population the discrepancy is not important, but for a small population it is important. We found that another technique used by SNL provides the correct required sample size. For systems-level testing of nuclear weapons, samples are selected without replacement, and the hypergeometric probability distribution applies. Both of the SNL techniques focus on samples without defects from sampling without replacement. We generalized the second SNL technique to cases with defects in the sample. We created a computer program in Mathematica to automate the calculation of confidence for reliability. We also evaluated sampling with replacement where the binomial probability distribution applies.

  10. Bridging Resilience Engineering and Human Reliability Analysis

    SciTech Connect (OSTI)

    Ronald L. Boring

    2010-06-01T23:59:59.000Z

    There has been strong interest in the new and emerging field called resilience engineering. This field has been quick to align itself with many existing safety disciplines, but it has also distanced itself from the field of human reliability analysis. To date, the discussion has been somewhat one-sided, with much discussion about the new insights afforded by resilience engineering. This paper presents an attempt to address resilience engineering from the perspective of human reliability analysis (HRA). It is argued that HRA shares much in common with resilience engineering and that, in fact, it can help strengthen nascent ideas in resilience engineering. This paper seeks to clarify and ultimately refute the arguments that have served to divide HRA and resilience engineering.

  11. Reliability Estimation for Double Containment Piping

    SciTech Connect (OSTI)

    L. Cadwallader; T. Pinna

    2012-08-01T23:59:59.000Z

    Double walled or double containment piping is considered for use in the ITER international project and other next-generation fusion device designs to provide an extra barrier for tritium gas and other radioactive materials. The extra barrier improves confinement of these materials and enhances safety of the facility. This paper describes some of the design challenges in designing double containment piping systems. There is also a brief review of a few operating experiences of double walled piping used with hazardous chemicals in different industries. This paper recommends approaches for the reliability analyst to use to quantify leakage from a double containment piping system in conceptual and more advanced designs. The paper also cites quantitative data that can be used to support such reliability analyses.

  12. Electronic logic for enhanced switch reliability

    DOE Patents [OSTI]

    Cooper, J.A.

    1984-01-20T23:59:59.000Z

    A logic circuit is used to enhance redundant switch reliability. Two or more switches are monitored for logical high or low output. The output for the logic circuit produces a redundant and fail-safe representation of the switch outputs. When both switch outputs are high, the output is high. Similarly, when both switch outputs are low, the logic circuit's output is low. When the output states of the two switches do not agree, the circuit resolves the conflict by memorizing the last output state which both switches were simultaneously in and produces the logical complement of this output state. Thus, the logic circuit of the present invention allows the redundant switches to be treated as if they were in parallel when the switches are open and as if they were in series when the switches are closed. A failsafe system having maximum reliability is thereby produced.

  13. The Lightswitch Wizard -- reliable daylight simulations

    E-Print Network [OSTI]

    For Initial Design; C. F. Morrison; M. Dubrous; C. F. Reinhart ?; M. Morrison; F. Dubrous

    A web-based, non-expert daylighting analysis tool has been developed to support daylighting-related design decisions in peripheral private offices during an early design stage (http://buildwiz.com). The tool offers a comparative, reliable, and fast analysis of the annual amount of daylight in the offices (daylight factor and daylight autonomy) and the lighting energy performance of automated lighting controls (occupancy sensors, photocells) compared to standard on/off switches. Blinds are either manually or automatically controlled.

  14. On virtual phonons, photons and electrons

    E-Print Network [OSTI]

    G. Nimtz

    2009-07-09T23:59:59.000Z

    A macroscopic realization of the strange virtual particles is presented. The classical Helmholtz and the quantum mechanical Schr\\"odinger equations are analogous differential equations. Their imaginary solutions are called evanescent modes in the case of elastic and electromagnetic fields. In the case of non-relativistic quantum mechanical fields they are called tunneling solutions. The imaginary solutions of this differential equation point to strange consequences: They are non local, they are not observable, and they described as virtual particles. During the last two decades QED calculations of the imaginary solutions have been experimentally confirmed for phonons, photons, and for electrons. The experimental proofs of the predictions of the non-relativistic quantum mechanics and of the Wigner phase time approach for the elastic, the electromagnetic and the Schr\\"odinger fields will be presented in this article. The results are zero tunneling time and an interaction time (i.e. a phase shift) at the barrier interfaces. The measured barrier interaction time (i.e. the barrier transmission time) scales approximately inversely with the particle energy.

  15. International Working Group for New Virtual Reality Applications in Architecture

    E-Print Network [OSTI]

    's developed VR applications in architecture. Group members come from eight universities around the worldWORLD8 International Working Group for New Virtual Reality Applications in Architecture YOSHIHIRO the activities of World8, an international working group on virtual reality (VR), and demonstrates the group

  16. The Role of Virtualization in Embedded Systems Gernot Heiser

    E-Print Network [OSTI]

    in the embedded domain. Starting from a comparison of key characteristics of enterprise systems and embedded virtualization has become a mainstream tool in the com- puting industry, as indicated by billion-dollar IPOs virtual ma- chines on demand on a lightly-used host, or even migrating live VMs. This utilises

  17. AI and Virtual Crowds: Populating the Diego Gutierrez

    E-Print Network [OSTI]

    Frischer, Bernard

    and geometrical representation of buildings and sites. Only very recently, works are starting to go beyond of virtual creatures interact and behave in a smart manner. In this paper we present a novel use of virtual traditionally been limited to illustration of buildings and sites through digital reconstruction. While

  18. Efficiency Assessment of Parallel Workloads on Virtualized Resources Javier Delgado,

    E-Print Network [OSTI]

    Sadjadi, S. Masoud

    Efficiency Assessment of Parallel Workloads on Virtualized Resources Javier Delgado, S. Masoud,ygliu,bobroff,sseelam}@us.ibm.com Abstract--In cloud computing, virtual containers on phys- ical resources are provisioned to requesting users. Resource providers may pack as many containers as possible onto each of their physical machines

  19. Virtual MISO Triggers in Wi-Fi-like Networks

    E-Print Network [OSTI]

    Virtual MISO Triggers in Wi-Fi-like Networks Oscar Bejarano Edward W. Knightly 1 Thursday, April 11 difficult to achieve in mobile devices Thursday, April 11, 2013 #12;5 Virtual MISO (vMISO) TX RX vMISO, 2013 #12;1. System Model 1.1. Distributed System 1.2. Single-Antenna Nodes 6 vMISO

  20. Virtual Workshops: Using Today's Networking Tools to Train Tomorrow's Experts 

    E-Print Network [OSTI]

    Kane, J. F.; Bailey, W. F.

    2000-01-01T23:59:59.000Z

    radical new approach to deliver live, on-site training using DuPont's wide-area communications network and Microsoft's NetMeeting™ data conferencing software: "Virtual Workshops." In I999, the ETN used the virtual workshop approach to deliver timely...

  1. MultiDimensional Storage Virtualization Lan Huang y

    E-Print Network [OSTI]

    Chiueh, Tzi-cker

    Multi­Dimensional Storage Virtualization #3; Lan Huang y 650 Harry Rd. IBM Almaden Research Center-of-the-art commercial storage virtualization systems focus only on one particular storage attribute, capacity. This paper describes the design, implementa- tion and evaluation of a multi-dimensional storage vir

  2. The Case for Partitioning Virtual Machines on Manycore Architectures

    E-Print Network [OSTI]

    Department of Energy is evaluating virtualization and cloud computing technologies in the Magellan [4 of proper NUMA support determines an average performance degradation of 55% when compared to native single node native performance: in a partitioned system with one virtual machine per socket the average

  3. Steering Behaviors for Autonomous Vehicles in Virtual Environments Hongling Wang

    E-Print Network [OSTI]

    Kearney, Joseph K.

    This paper presents steering behaviors that control autonomous ve- hicles populating roadways in virtualSteering Behaviors for Autonomous Vehicles in Virtual Environments Hongling Wang Dept of Computer are modeled as three-dimensional ribbons that make the local orientation of the road explicit and allow

  4. Constructivism, virtual reality and tools to support Cara Winterbottom

    E-Print Network [OSTI]

    Blake, Edwin

    230 Constructivism, virtual reality and tools to support design Cara Winterbottom Collaborative +27 21 650 2663 edwin@cs.uct.ac.za ABSTRACT This paper describes a process for creating a design tool in designing virtual environment interactions, however it can be generalized to other design domains

  5. Proceedings of Virtual Concept 2005 Biarritz, France, November 8th

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of concurrent engineering. This leads us to draw a control architecture enabling to drive virtual humans. The Virtual Human (VH) we are designing is to fit the concurrent engineering design approach. Large scale concurrent engineering (also known as "engineers' dream") is now regarded as very attractive [1]. It is held

  6. The Heavy Ion Fusion Science Virtual National Laboratory

    E-Print Network [OSTI]

    Gilson, Erik

    and collaborators. P. K. Roy et al., Nucl. Instr. and Meth. in Phys. Res. A 606 22, (2009). The four CAPS produce current through each of the four sources. P. K. Roy #12;The Heavy Ion Fusion Science Virtual National P. Gilson Princeton Plasma Physics Laboratory #12;The Heavy Ion Fusion Science Virtual National

  7. Creating Highquality Roadmaps for Motion Planning in Virtual Environments

    E-Print Network [OSTI]

    Geraerts, R.J.

    Creating High­quality Roadmaps for Motion Planning in Virtual Environments Roland Geraerts and Mark, the Netherlands Email: {roland,markov}@cs.uu.nl Abstract--- Our goal is to create roadmaps that are particularly suited for motion planning in virtual environments. We use our Reachability Roadmap Method to compute

  8. VIRTUAL LIGHT: DIGITALLY-GENERATED LIGHTING FOR VIDEO CONFERENCING APPLICATIONS

    E-Print Network [OSTI]

    Fisher, Kathleen

    VIRTUAL LIGHT: DIGITALLY-GENERATED LIGHTING FOR VIDEO CONFERENCING APPLICATIONS Andrea Basso method to improve the lighting conditions of a real scene or video sequence. In particular we concentrate on modifying real light sources intensities and inserting virtual lights into a real scene viewed from a fixed

  9. An Ontology for Semantic Representation of an Urban Virtual Environment

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    An Ontology for Semantic Representation of an Urban Virtual Environment K. Harkouken Saiah1, N of semantic representation of a dynamic virtual environment. Our model is embodied into a simulation with the semantic state of their environment. The idea is to represent the services offered by the environment

  10. Virtual Agent for Deaf Signing Gestures S. Gibet, 1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    a virtual human representation. The quality of this representation relies upon the ability of the animation and modelling human motion stands for an important challenge in researches dedicated to virtual reality into integrating within an animation framework some properties of human motions extracted from data captured

  11. Animations of Medical Training Scenarios in Immersive Virtual Environments

    E-Print Network [OSTI]

    Animations of Medical Training Scenarios in Immersive Virtual Environments Ivelina V. Alexandrova-line me- dia applications using Virtual Humans (VHs) 1 http://www.meti.com/ 3 http to express emotions, and syn- chronized body and facial animations, including human-like gaze behavior

  12. A Virtual Reality-Based Exercise Program For Stroke Rehabilitation

    E-Print Network [OSTI]

    New Jersey, University of Medicine and Dentistry of

    Several researchers have shown in both animal and human studies that important variables in reA Virtual Reality-Based Exercise Program For Stroke Rehabilitation David Jack 2, 3 , Rares Boian 1 1 and Howard Poizner 2 * ABSTRACT A PC based desktop Virtual Reality system was developed

  13. Attention Based, Naive Strategies, for Guiding Intelligent Virtual Agents

    E-Print Network [OSTI]

    Corran, Ruth

    communication be- tween the components Several studies have demonstrated that human's feelings towards virtualAttention Based, Naive Strategies, for Guiding Intelligent Virtual Agents Damien Clauzel1 , Claudia). It is composed of speech, animations, expressions and other actions. Any action in the script may be assigned

  14. Air Traffic Control Using Virtual Stationary Automata Matthew D. Brown

    E-Print Network [OSTI]

    Lynch, Nancy

    Air Traffic Control Using Virtual Stationary Automata by Matthew D. Brown B.S., Massachusetts by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arthur C. Smith Chairman, Department Committee on Graduate Students #12;Air Traffic Control Using Virtual of Engineering Abstract As air travel has become an essential part of modern life, the air traffic control system

  15. Trusted Integrity Measurement and Reporting for Virtualized Platforms

    E-Print Network [OSTI]

    Ryan, Mark

    Trusted Integrity Measurement and Reporting for Virtualized Platforms (Work-in-Progress) Serdar of the whole set of platform components. It is, however, difficult to use this technology directly in virtualized platforms because of com- plexity and dynamic changes of platform components. In this paper, we

  16. LANL/PNNL Virtual Center for Chemical Hydrides and New Concepts...

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

    LANLPNNL Virtual Center for Chemical Hydrides and New Concepts for Hydrogen Storage LANLPNNL Virtual Center for Chemical Hydrides and New Concepts for Hydrogen Storage...

  17. Proposal to Lead the Virtual Center on Carbon Materials and Support...

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

    Proposal to Lead the Virtual Center on Carbon Materials and Support the Chemical Hydrides Center Proposal to Lead the Virtual Center on Carbon Materials and Support the Chemical...

  18. Towards secure virtual directories : a risk analysis framework.

    SciTech Connect (OSTI)

    Claycomb, William R.

    2010-07-01T23:59:59.000Z

    Directory services are used by almost every enterprise computing environment to provide data concerning users, computers, contacts, and other objects. Virtual directories are components that provide directory services in a highly customized manner. Unfortunately, though the use of virtual directory services are widespread, an analysis of risks posed by their unique position and architecture has not been completed. We present a detailed analysis of six attacks to virtual directory services, including steps for detection and prevention. We also describe various categories of attack risks, and discuss what is necessary to launch an attack on virtual directories. Finally, we present a framework to use in analyzing risks to individual enterprise computing virtual directory instances. We show how to apply this framework to an example implementation, and discuss the benefits of doing so.

  19. Methods and systems relating to an augmented virtuality environment

    DOE Patents [OSTI]

    Nielsen, Curtis W; Anderson, Matthew O; McKay, Mark D; Wadsworth, Derek C; Boyce, Jodie R; Hruska, Ryan C; Koudelka, John A; Whetten, Jonathan; Bruemmer, David J

    2014-05-20T23:59:59.000Z

    Systems and methods relating to an augmented virtuality system are disclosed. A method of operating an augmented virtuality system may comprise displaying imagery of a real-world environment in an operating picture. The method may further include displaying a plurality of virtual icons in the operating picture representing at least some assets of a plurality of assets positioned in the real-world environment. Additionally, the method may include displaying at least one virtual item in the operating picture representing data sensed by one or more of the assets of the plurality of assets and remotely controlling at least one asset of the plurality of assets by interacting with a virtual icon associated with the at least one asset.

  20. System-Level Virtualization Research at Oak Ridge National Laboratory

    SciTech Connect (OSTI)

    Scott, Stephen L [ORNL; Vallee, Geoffroy R [ORNL; Naughton, III, Thomas J [ORNL; Tikotekar, Anand A [ORNL; Engelmann, Christian [ORNL; Ong, Hong Hoe [ORNL

    2010-01-01T23:59:59.000Z

    System-level virtualization is today enjoying a rebirth as a technique to effectively share what were then considered large computing resources to subsequently fade from the spotlight as individual workstations gained in popularity with a one machine - one user approach. One reason for this resurgence is that the simple workstation has grown in capability to rival that of anything available in the past. Thus, computing centers are again looking at the price/performance benefit of sharing that single computing box via server consolidation. However, industry is only concentrating on the benefits of using virtualization for server consolidation (enterprise computing) whereas our interest is in leveraging virtualization to advance high-performance computing (HPC). While these two interests may appear to be orthogonal, one consolidating multiple applications and users on a single machine while the other requires all the power from many machines to be dedicated solely to its purpose, we propose that virtualization does provide attractive capabilities that may be exploited to the benefit of HPC interests. This does raise the two fundamental questions of: is the concept of virtualization (a machine sharing technology) really suitable for HPC and if so, how does one go about leveraging these virtualization capabilities for the benefit of HPC. To address these questions, this document presents ongoing studies on the usage of system-level virtualization in a HPC context. These studies include an analysis of the benefits of system-level virtualization for HPC, a presentation of research efforts based on virtualization for system availability, and a presentation of research efforts for the management of virtual systems. The basis for this document was material presented by Stephen L. Scott at the Collaborative and Grid Computing Technologies meeting held in Cancun, Mexico on April 12-14, 2007.

  1. Running head: Virtual Peer Technology for Children with Autism Using Virtual Peer Technology as an Intervention for Children with Autism

    E-Print Network [OSTI]

    Cassell, Justine

    an affinity for computers. Instead of labeling these technologies as useless for children with ASD1 Running head: Virtual Peer Technology for Children with Autism Using Virtual Peer Technology of key features that we believe to be important ­ and as yet undervalued -- in technological

  2. Reliability Evaluation of Electric Power Generation Systems with Solar Power 

    E-Print Network [OSTI]

    Samadi, Saeed

    2013-11-08T23:59:59.000Z

    reliability evaluation of generation systems including Photovoltaic (PV) and Concentrated Solar Power (CSP) plants. Unit models of PV and CSP are developed first, and then generation system model is constructed to evaluate the reliability of generation systems...

  3. ORNL/TM-2004/91 MEASUREMENT PRACTICES FOR RELIABILITY

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ................................................................................... 4 4. Loss of Load Probability: A Historical Perspective ................................................................................. 8 6. Pitfalls in Methods for Reliability Index Calculation............................................................ 27 C. Activities and Organizations Developing and Sharing Information on Reliability and Power

  4. Reliability as a measure of transportation system performance

    E-Print Network [OSTI]

    Jackson, Dena Delise

    2000-01-01T23:59:59.000Z

    This investigation involved a comparative analysis to assess the quantitative and qualitative characteristics of seven previously proposed methods of measuring travel time reliability. For each method, reliability was calculated using a l2-week...

  5. Gearbox Reliability Collaborative - Phase 1 and 2 Overview (Presentation)

    SciTech Connect (OSTI)

    Link, H.

    2011-08-01T23:59:59.000Z

    The presentation given at the Wind Turbine Reliability Workshop at Sandia National Laboratories, August 2-3, 2011, serves as an overview for the findings from the Gearbox Reliability Collaborative Project Report: Findings from Phase 1 and Phase 2 Testing

  6. Reliability of the generation supply in an interconnected power system

    E-Print Network [OSTI]

    Holditch, Damon Will

    1967-01-01T23:59:59.000Z

    method of calculating generation supply reliability was first described by Calabrese. This method has been expanded and refined by numerous other authors. The reliability figure of meri. t usually calculated using Calabrese's method is called loss...

  7. Ensuring the Availability and Reliability of Urea Dosing For...

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

    Ensuring the Availability and Reliability of Urea Dosing For On-Road and Non-Road Ensuring the Availability and Reliability of Urea Dosing For On-Road and Non-Road 2003 DEER...

  8. actions human reliability: Topics by E-print Network

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

    reliability is not easy Paris-Sud XI, Universit de 171 Software Reliability Using SPC and Weibull Order Statistics CiteSeer Summary: Control charts are widely used for...

  9. Energy Department Invests Over $10 Million to Improve Grid Reliability...

    Energy Savers [EERE]

    10 Million to Improve Grid Reliability and Resiliency Energy Department Invests Over 10 Million to Improve Grid Reliability and Resiliency June 11, 2014 - 6:20pm Addthis NEWS...

  10. Composite System based Multi-Area Reliability Evaluation

    E-Print Network [OSTI]

    Nagarajan, Ramya

    2011-02-22T23:59:59.000Z

    of such systems. Multi - area reliability evaluation is typically done by considering equivalent tie lines between different areas in an integrated power system. It gives approximate results for the reliability indices of a power system as it models each...

  11. Continuous Reliability Enhancement for Wind (CREW) database : wind plant reliability benchmark.

    SciTech Connect (OSTI)

    Hines, Valerie Ann-Peters; Ogilvie, Alistair B.; Bond, Cody R.

    2013-09-01T23:59:59.000Z

    To benchmark the current U.S. wind turbine fleet reliability performance and identify the major contributors to component-level failures and other downtime events, the Department of Energy funded the development of the Continuous Reliability Enhancement for Wind (CREW) database by Sandia National Laboratories. This report is the third annual Wind Plant Reliability Benchmark, to publically report on CREW findings for the wind industry. The CREW database uses both high resolution Supervisory Control and Data Acquisition (SCADA) data from operating plants and Strategic Power Systems' ORAPWind%C2%AE (Operational Reliability Analysis Program for Wind) data, which consist of downtime and reserve event records and daily summaries of various time categories for each turbine. Together, these data are used as inputs into CREW's reliability modeling. The results presented here include: the primary CREW Benchmark statistics (operational availability, utilization, capacity factor, mean time between events, and mean downtime); time accounting from an availability perspective; time accounting in terms of the combination of wind speed and generation levels; power curve analysis; and top system and component contributors to unavailability.

  12. Unitary constraints on Deeply Virtual Compton Scattering

    SciTech Connect (OSTI)

    J.M. Laget

    2007-11-01T23:59:59.000Z

    At moderately low momentum transfer ($-t$ up to 1 GeV$^2$) the coupling to the vector meson production channels gives the dominant contribution to real Compton and deeply virtual Compton scattering (DVCS). Starting from a Regge Pole approach that successfully describes vector meson production, the singular part of the corresponding box diagrams (where the intermediate vector meson-baryon pair propagates on-shell) is evaluated without any further assumptions (unitarity). Such a treatment explains not only the unexpectedly large DVCS unpolarized cross section that has been recently measured at Jefferson Laboratory (JLab), but also all the beam spin and charge asymmetries that has been measured at JLab and Hermes, without explicit need of Generalized Parton Distributions (GPD). The issue of the relationship between the two approaches is addressed.

  13. Final report on reliability and lifetime prediction.

    SciTech Connect (OSTI)

    Gillen, Kenneth Todd; Wise, Jonathan; Jones, Gary D.; Causa, Al G. [Goodyear Tire and Rubber Co., Akron, OH; Terrill, Edward R. [Goodyear Tire and Rubber Co., Akron, OH; Borowczak, Marc [Goodyear Tire and Rubber Co., Akron, OH

    2012-12-01T23:59:59.000Z

    This document highlights the important results obtained from the subtask of the Goodyear CRADA devoted to better understanding reliability of tires and to developing better lifetime prediction methods. The overall objective was to establish the chemical and physical basis for the degradation of tires using standard as well as unique models and experimental techniques. Of particular interest was the potential application of our unique modulus profiling apparatus for assessing tire properties and for following tire degradation. During the course of this complex investigation, extensive relevant information was generated, including experimental results, data analyses and development of models and instruments. Detailed descriptions of the findings are included in this report.

  14. The quantitative failure of human reliability analysis

    SciTech Connect (OSTI)

    Bennett, C.T.

    1995-07-01T23:59:59.000Z

    This philosophical treatise argues the merits of Human Reliability Analysis (HRA) in the context of the nuclear power industry. Actually, the author attacks historic and current HRA as having failed in informing policy makers who make decisions based on risk that humans contribute to systems performance. He argues for an HRA based on Bayesian (fact-based) inferential statistics, which advocates a systems analysis process that employs cogent heuristics when using opinion, and tempers itself with a rational debate over the weight given subjective and empirical probabilities.

  15. Granite Reliable Power | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEI ReferenceJump to: navigation,II Wind Farm JumpReliable Power Jump

  16. Microsoft Word - Pv Reliability Paper.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE LMI-EFRCAddendumNo. 1 Contract0 1RELIABILITY AND

  17. Photovoltaic Module Reliability Workshop 2013: February 26-27, 2013

    SciTech Connect (OSTI)

    Kurtz, S.

    2013-10-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  18. Photovoltaic Module Reliability Workshop 2010: February 18-19, 2010

    SciTech Connect (OSTI)

    Kurtz, J.

    2013-11-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  19. Photovoltaic Module Reliability Workshop 2011: February 16-17, 2011

    SciTech Connect (OSTI)

    Kurtz, S.

    2013-11-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  20. ELECTROMECHANICAL RELIABILITY TESTING OF THREE-AXIAL SILICON FORCE SENSORS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , available automatic test equipment for integrated circuits (ICs) can be leveraged [2]. The reliabilityELECTROMECHANICAL RELIABILITY TESTING OF THREE-AXIAL SILICON FORCE SENSORS S. Spinner1,2, J the measurement results. 1. INTRODUCTION The reliability of microelectromechanical systems (MEMS) receives growing

  1. Reliability-Centric High-Level Synthesis , N. Mansouri

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    critical applications, poor reliability can be catastrophic in terms of both human and equipment cost1 Reliability-Centric High-Level Synthesis S. Tosun , N. Mansouri , E. Arvas , M. Kandemir-down. As a result, it is becoming necessary to treat reliability as a first-class citizen in system design

  2. Design Strategy for a Formally Verified Reliable Computing Platform

    E-Print Network [OSTI]

    Butler, Ricky W.

    must demonstrate that these systems meet stringent reliability requirements. Flight critical components the manu­ facturing of electronic devices with failure rates low enough to meet the reliability of the system in the presence of component failures. The first task must therefore cal­ culate the reliability

  3. Photovoltaic Module Reliability Workshop 2014: February 25-26, 2014

    SciTech Connect (OSTI)

    Kurtz, S.

    2014-02-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  4. Estimation of Photovoltaic System Reliability and Performance Metrics

    E-Print Network [OSTI]

    Liberzon, Daniel

    1 Estimation of Photovoltaic System Reliability and Performance Metrics Sairaj V. Dhople, Student reliability and perfor- mance analysis of grid-tied photovoltaic (PV) systems is for- mulated using Markov and energy yield, and reliability metrics such as availability. The paper also provides an analytical method

  5. Photovoltaic Module Reliability Workshop 2012: February 28 - March 1, 2012

    SciTech Connect (OSTI)

    Kurtz, S.

    2013-11-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  6. Guest Editorial: Special Issue on Reliable Distributed Systems

    E-Print Network [OSTI]

    Firenze, Università degli Studi di

    Guest Editorial: Special Issue on Reliable Distributed Systems Shambhu J. Upadhyaya, Senior Member, designers, and implementers of distributed systems, with emphasis on system properties such as reliability with the 19th IEEE Symposium on Reliable Distributed Systems held at Nuernberg, Germany, 2000, but the topics

  7. Bayesian Networks and Evidence Theory to Model Complex Systems Reliability

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , infrastructure of water distribution or electricity. The reliability studies of such systems are consequentlyBayesian Networks and Evidence Theory to Model Complex Systems Reliability Ch. SIMON, Ph. WEBER, E.levrat}@cran.uhp-nancy.fr Abstract-- This paper deals with the use of Bayesian Net- works to compute system reliability of complex

  8. Using wind plant data to increase reliability.

    SciTech Connect (OSTI)

    Peters, Valerie A. (Sandia National Laboratories, Livermore, CA); Ogilvie, Alistair B.; McKenney, Bridget L.

    2011-01-01T23:59:59.000Z

    Operators interested in improving reliability should begin with a focus on the performance of the wind plant as a whole. To then understand the factors which drive individual turbine performance, which together comprise the plant performance, it is necessary to track a number of key indicators. Analysis of these key indicators can reveal the type, frequency, and cause of failures and will also identify their contributions to overall plant performance. The ideal approach to using data to drive good decisions includes first determining which critical decisions can be based on data. When those required decisions are understood, then the analysis required to inform those decisions can be identified, and finally the data to be collected in support of those analyses can be determined. Once equipped with high-quality data and analysis capabilities, the key steps to data-based decision making for reliability improvements are to isolate possible improvements, select the improvements with largest return on investment (ROI), implement the selected improvements, and finally to track their impact.

  9. Real Time Grid Reliability Management 2005

    SciTech Connect (OSTI)

    Eto, Joe; Eto, Joe; Lesieutre, Bernard; Lewis, Nancy Jo; Parashar, Manu

    2008-07-07T23:59:59.000Z

    The increased need to manage California?s electricity grid in real time is a result of the ongoing transition from a system operated by vertically-integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management -- construction of new transmission lines -- has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools. This project: (1) developed and conducted first-ever demonstrations of two prototype real-time software tools for voltage security assessment and phasor monitoring; and (2) prepared a scoping study on improving load and generator response models. Additional funding through two separate subsequent work authorizations has already been provided to build upon the work initiated in this project.

  10. Reliability of dynamic systems under limited information.

    SciTech Connect (OSTI)

    Field, Richard V., Jr. (.,; .); Grigoriu, Mircea

    2006-09-01T23:59:59.000Z

    A method is developed for reliability analysis of dynamic systems under limited information. The available information includes one or more samples of the system output; any known information on features of the output can be used if available. The method is based on the theory of non-Gaussian translation processes and is shown to be particularly suitable for problems of practical interest. For illustration, we apply the proposed method to a series of simple example problems and compare with results given by traditional statistical estimators in order to establish the accuracy of the method. It is demonstrated that the method delivers accurate results for the case of linear and nonlinear dynamic systems, and can be applied to analyze experimental data and/or mathematical model outputs. Two complex applications of direct interest to Sandia are also considered. First, we apply the proposed method to assess design reliability of a MEMS inertial switch. Second, we consider re-entry body (RB) component vibration response during normal re-entry, where the objective is to estimate the time-dependent probability of component failure. This last application is directly relevant to re-entry random vibration analysis at Sandia, and may provide insights on test-based and/or model-based qualification of weapon components for random vibration environments.

  11. Adhesion and Thin-Film Module Reliability

    SciTech Connect (OSTI)

    McMahon, T. J.; Jorgenson, G. J.

    2006-01-01T23:59:59.000Z

    Among the infrequently measured but essential properties for thin-film (T-F) module reliability are the interlayer adhesion and cohesion within a layer. These can be cell contact layers to glass, contact layers to the semiconductor, encapsulant to cell, glass, or backsheet, etc. We use an Instron mechanical testing unit to measure peel strengths at 90deg or 180deg and, in some cases, a scratch and tape pull test to evaluate inter-cell layer adhesion strengths. We present peel strength data for test specimens laminated from the three T-F technologies, before and after damp heat, and in one instance at elevated temperatures. On laminated T-F cell samples, failure can occur uniformly at any one of the many interfaces, or non-uniformly across the peel area at more than one interface. Some peel strengths are Lt1 N/mm. This is far below the normal ethylene vinyl acetate/glass interface values of >10 N/mm. We measure a wide range of adhesion strengths and suggest that adhesion measured under higher temperature and relative humidity conditions is more relevant for module reliability.

  12. Stochastic Methods in Reliability and Risk Management This volume focuses on stochastic methods developed for reliability modeling and risk

    E-Print Network [OSTI]

    Li, Haijun

    such as quantitative risk management, decision analysis under uncertainty, and their applications in areas methods developed for reliability modeling and risk analysis. Reliability theory and risk analysis have. This special volume highlights this convergence of reliability modeling and risk analysis, that forms the core

  13. On the possibility of using models of reliability theory for technical systems to investigate the reliability of energy systems

    SciTech Connect (OSTI)

    Rudenko, Yu.N.; Ushakov, I.A.

    1984-01-01T23:59:59.000Z

    Certain features of mathematical models of energy-system reliability are analyzed. Mathematical models employed in reliability theory for technical systems are considered together with the possibility of modifying them for use in the solution of problems associated with ensuring the reliability of energy systems.

  14. ACE: A Platform for the Real Time Simulation of Virtual Human Agents

    E-Print Network [OSTI]

    Kallmann, Marcelo

    . Keywords: Agents, Virtual Humans, Virtual Environments, Behavioral Animation, Object Interaction, Script. Nowadays many systems are available to animate virtual humans. Such systems encompass several differentACE: A Platform for the Real Time Simulation of Virtual Human Agents Marcelo Kallmann, Jean

  15. Virtual Human Animation Based on Movement Observation and Cognitive Behavior Models

    E-Print Network [OSTI]

    Badler, Norman I.

    Virtual Human Animation Based on Movement Observation and Cognitive Behavior Models Norman I Philadelphia, PA 19104­6389 Abstract Automatically animating virtual humans with actions that reflect real for the future of real­time virtual human animation. 1 Introduction Automatically animating virtual humans

  16. Comparison of Allocation Schemes for Virtual Machines in Energy-aware

    E-Print Network [OSTI]

    Do, Tien Van

    Comparison of Allocation Schemes for Virtual Machines in Energy-aware Server Farms TIEN VAN DO. In this paper, a simple energy-aware policy incorporating allocation schemes of virtual servers is proposed in a server farm. Keywords: green computing; virtualization; virtual machine; performance model; energy-aware

  17. Review of Quantitative Software Reliability Methods

    SciTech Connect (OSTI)

    Chu, T.L.; Yue, M.; Martinez-Guridi, M.; Lehner, J.

    2010-09-17T23:59:59.000Z

    The current U.S. Nuclear Regulatory Commission (NRC) licensing process for digital systems rests on deterministic engineering criteria. In its 1995 probabilistic risk assessment (PRA) policy statement, the Commission encouraged the use of PRA technology in all regulatory matters to the extent supported by the state-of-the-art in PRA methods and data. Although many activities have been completed in the area of risk-informed regulation, the risk-informed analysis process for digital systems has not yet been satisfactorily developed. Since digital instrumentation and control (I&C) systems are expected to play an increasingly important role in nuclear power plant (NPP) safety, the NRC established a digital system research plan that defines a coherent set of research programs to support its regulatory needs. One of the research programs included in the NRC's digital system research plan addresses risk assessment methods and data for digital systems. Digital I&C systems have some unique characteristics, such as using software, and may have different failure causes and/or modes than analog I&C systems; hence, their incorporation into NPP PRAs entails special challenges. The objective of the NRC's digital system risk research is to identify and develop methods, analytical tools, and regulatory guidance for (1) including models of digital systems into NPP PRAs, and (2) using information on the risks of digital systems to support the NRC's risk-informed licensing and oversight activities. For several years, Brookhaven National Laboratory (BNL) has worked on NRC projects to investigate methods and tools for the probabilistic modeling of digital systems, as documented mainly in NUREG/CR-6962 and NUREG/CR-6997. However, the scope of this research principally focused on hardware failures, with limited reviews of software failure experience and software reliability methods. NRC also sponsored research at the Ohio State University investigating the modeling of digital systems using dynamic PRA methods. These efforts, documented in NUREG/CR-6901, NUREG/CR-6942, and NUREG/CR-6985, included a functional representation of the system's software but did not explicitly address failure modes caused by software defects or by inadequate design requirements. An important identified research need is to establish a commonly accepted basis for incorporating the behavior of software into digital I&C system reliability models for use in PRAs. To address this need, BNL is exploring the inclusion of software failures into the reliability models of digital I&C systems, such that their contribution to the risk of the associated NPP can be assessed.

  18. A user interface for customizing cane layouts in Virtual Glass

    E-Print Network [OSTI]

    Baldauf, Kimberly (Kimberly B.)

    2013-01-01T23:59:59.000Z

    Cane pulling is a technique used in glass blowing to build up intricate patterns which come out in the final piece. Virtual Glass was created to model the cane pulling process from start to finish. There are a variety of ...

  19. BioenergizeME Virtual Science Fair: History of Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  20. BioenergizeME Virtual Science Fair: Environmental Impacts of Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  1. BioenergizeME Virtual Science Fair: Biomass History A timeline

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  2. BioenergizeME Virtual Science Fair: Environmental Impacts

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  3. BioenergizeME Virtual Science Fair: Microbiology and Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Toledo High School in Toledo, OR, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  4. BioenergizeME Virtual Science Fair: Bioenegy Benefits Environmental Forestry

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  5. Enabling Virtual Reality Communities: Gulliver and Aveiro Anton Nijholt

    E-Print Network [OSTI]

    Nijholt, Anton

    , Matjaz Stuk and Alena Hud- covicová, called "Gulliver's Museum of Living Art". Our part of the project Project of the artists Matjaz Stuk and Alena Hudcovicová aims at building a variety of virtual and real

  6. BioenergizeME Virtual Science Fair: Environmental benefit of Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  7. Using Multiprotocol Label Switching in Virtual Private Networks

    E-Print Network [OSTI]

    Doddapaneni, Krishnamohan

    2001-01-01T23:59:59.000Z

    This thesis presents the design of Multiprotocol Label Switching Virtual Private Networks(MPLS VPN). MPLS VPNs are true peer models, which perform traffic separation at Layer 3, through the implementation of separate IP VPN forwarding tables. MPLS...

  8. Virtual Reality as a Support Tool for Ergonomic Style Convergence

    E-Print Network [OSTI]

    Virtual Reality as a Support Tool for Ergonomic ­ Style Convergence Multidisciplinary Interaction and this paper presents a case study: the design of a support tool for ergonomic-style convergence. Categories

  9. Towards Empathic Virtual and Robotic Tutors Ginevra Castellano1

    E-Print Network [OSTI]

    Bull, Susan

    that embodiment plays in user perception of an artificial entity: experi- ments comparing robots Embodied Empathic Virtual and Robotic Tutors with EMOTE Two students are learning about ecology models

  10. Promoting Sustainability Awareness through Energy Engaged Virtual Communities of Construction

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Promoting Sustainability Awareness through Energy Engaged Virtual Communities of Construction to demolition. Sustainability knowledge is #12;Promoting Sustainability Awareness through Energy EngagedH@cf.ac.uk Abstract. Sustainability requires the engagement of every single constituent of the "building" product

  11. Communicated by Michael Jordan Learning Virtual Equilibrium Trajectories for Control

    E-Print Network [OSTI]

    Shadmehr, Reza

    Communicated by Michael Jordan Learning Virtual Equilibrium Trajectories for Control of a Robot Arm Institute of Technology #12;Equilibrium Trajectories to Control a Robot Arm 437 the desired state

  12. CITI Technical Report 00-3 Encrypting Virtual Memory

    E-Print Network [OSTI]

    Michigan, University of

    secured against physical attacks or protected against security compromises that alloCITI Technical Report 00-3 Encrypting Virtual Memory Niels Provos provos@citi.umich.edu Abstract

  13. Power in Collaboration: National Energy Literacy Virtual Meet-Up

    Broader source: Energy.gov [DOE]

    The webinar will be a dynamic virtual conversation of ongoing efforts from across the country in utilizing the Department of Energy's Energy Literacy Framework to address one of our nation's...

  14. Pre-publication review. Virtual Slavica: Digital Libraries, Digital Archives

    E-Print Network [OSTI]

    Giullian, Jon C.

    2005-01-01T23:59:59.000Z

    Reviews the book "Virtual Slavica: Digital Libraries, Digital Archives," the first major work to address the issue of technology and Cyrillic language resources, thus providing an important “snapshot of Slavic digital librarianship...

  15. Virtual Private Environments for Multiphysics Code Validation on Computing Grids

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Virtual Private Environments for Multiphysics Code Validation on Computing Grids Toan Nguyen-based computing environments and deploys, tests and analyzes multiphysics codes. A second approach executes model coupling, error correlations, alert definitions, best usage practices, code verification and code

  16. PNNL offers 'virtual tour' of Shallow Underground Laboratory...

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

    science research such as the search for dark matter in the universe or neutrinoless double-beta decay. The virtual tour allows visitors to witness the development of gas...

  17. Provisioning Virtual Private Networks under Traffic Uncertainty* A ...

    E-Print Network [OSTI]

    provisioning Virtual Private Networks (VPNs): given a set of terminals that ..... de m and satis f action by i m posing a unit fl ow between each oriented pair o f ter ...

  18. Navegacin autnoma de actores virtuales en entornos dinmicos

    E-Print Network [OSTI]

    Lozano, Miguel

    simulaciones constituye otro elemento clave dentro del problema planteado. Los resultados obtenidos por las transcurso de las simulaciones, estos humanos virtuales sean capaces de aportar, a través de sus

  19. Formalismos de planificacin para la animacin comportamental de humanos virtuales*

    E-Print Network [OSTI]

    Lozano, Miguel

    , a partir del escenario propuesto. Palabras clave: Actores virtuales, Simulaciones gráficas interactivasD interactivas en tiempo real, como simulaciones dedicadas al entrenamiento, aplicaciones médicas o

  20. Virtual Alternative to the Oral Examination for Emergency Medicine Residents

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    Journal of Emergency Medicine McGrath et al. A VirtualJournal of Emergency Medicine 2014. Available at: http://Board of Emergency Medicine. Availabl at: www.abem.org.

  1. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    of PV materials Reliability of photovoltaic materials isof photovoltaic (PV) technologies. PV reliability andPhotovoltaic’s Properties and Characterization .. 9 1.5. Degradation and Reliability

  2. RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS FOR THE DEEP UNDERWATER MUON AND NEUTRINO DETECTION SYSTEM

    E-Print Network [OSTI]

    Leskovar, B.

    2010-01-01T23:59:59.000Z

    to the designer of high-reliability equipment and systems.HDBK-217B, Reliability Prediction of Electronic Equipment,217B-Reliability Prediction of Electronic Equipment provides

  3. Joint first-passage probability, and reliability of systems under Stochastic excitation

    E-Print Network [OSTI]

    Song, J; Kiureghian, A D

    2006-01-01T23:59:59.000Z

    and reliability of electrical substation equipment andthe reliability of a system of interconnected equipmentthe reliability of a system of inter- connected equipment

  4. Radioisotope thermoelectric generator reliability and safety

    SciTech Connect (OSTI)

    Campbell, R.; Klein, J.

    1989-01-01T23:59:59.000Z

    There are numerous occasions when a planetary mission requires energy in remote areas of the solar system. Anytime power is required much beyond Mars or the Asteroid Belts, solar power is not an option. The radioisotope thermoelectric generator (RTG) was developed for such a mission requirement. It is a relatively small and lightweight power source that can produce power under adverse conditions. Just this type of source has become the backbone of the power system for far outer plant exploration. Voyagers I and II are utilizing RTGs, which will soon power the Galileo spacecraft to Jupiter and the Ulysses spacecraft to study the solar poles. The paper discusses RTG operation including thermoelectric design, converter design, general-purpose heat source; RTG reliability including design, testing, experience, and launch approval; and RTG safety issues and methods of ensuring safety.

  5. Advancing Usability Evaluation through Human Reliability Analysis

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman

    2005-07-01T23:59:59.000Z

    This paper introduces a novel augmentation to the current heuristic usability evaluation methodology. The SPAR-H human reliability analysis method was developed for categorizing human performance in nuclear power plants. Despite the specialized use of SPAR-H for safety critical scenarios, the method also holds promise for use in commercial off-the-shelf software usability evaluations. The SPAR-H method shares task analysis underpinnings with human-computer interaction, and it can be easily adapted to incorporate usability heuristics as performance shaping factors. By assigning probabilistic modifiers to heuristics, it is possible to arrive at the usability error probability (UEP). This UEP is not a literal probability of error but nonetheless provides a quantitative basis to heuristic evaluation. When combined with a consequence matrix for usability errors, this method affords ready prioritization of usability issues.

  6. Nuclear Power - Control, Reliability and Human Factors 

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Instrumentation and Control 49 H.M. Hashemian Chapter 4 Design Considerations for the Implementation of a Mobile IP Telephony System in a Nuclear Power Plant 67 J. Garc?a-Hern?ndez, J. C. Vel?zquez- Hern?ndez, C. F. Garc?a-Hern?ndez and M. A. Vallejo-Alarc?n... Reliability K s e n i i a Sapoz h n i k o v a and Roald Tayma n o v D.I.Mendeleyev Institute for Metrology, Russia 1. Introduction At present, a great number of embedded sens o r devi c es provi d e monito r i n g of operat i n g condi t io n...

  7. Wind Power Reliability: Breaking Down a Barrier

    Broader source: Energy.gov [DOE]

    The steady increase of wind power on the grid presents new challenges for power system operators charged with making sure the grid stays up and running. "We need to ensure that we are going down a path that will lead to better reliability [with wind power]," said Bob Zavadil, an executive vice president at EnerNex Corporation in Knoxville, Tenn., a firm specializing in renewable energy grid interconnection and integration. "If this piece isn't done, there will be problems." EnerNex has spent the last decade perfecting wind turbine and plant models that test a wind plant's influence on the grid and its ability to provide grid support. In its latest effort, the company is using American Recovery and Reinvestment Act funds worth $750,000 to develop documentation and validations of computer wind turbine models.

  8. HUMAN RELIABILITY ANALYSIS FOR COMPUTERIZED PROCEDURES

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman; Katya Le Blanc

    2011-09-01T23:59:59.000Z

    This paper provides a characterization of human reliability analysis (HRA) issues for computerized procedures in nuclear power plant control rooms. It is beyond the scope of this paper to propose a new HRA approach or to recommend specific methods or refinements to those methods. Rather, this paper provides a review of HRA as applied to traditional paper-based procedures, followed by a discussion of what specific factors should additionally be considered in HRAs for computerized procedures. Performance shaping factors and failure modes unique to computerized procedures are highlighted. Since there is no definitive guide to HRA for paper-based procedures, this paper also serves to clarify the existing guidance on paper-based procedures before delving into the unique aspects of computerized procedures.

  9. An intelligent filter for an educational virtual laboratory

    E-Print Network [OSTI]

    Sanchez, Sandra Patricia

    2001-01-01T23:59:59.000Z

    AN INTELLIGENT FILTER FOR AN EDUCATIONAL VIRTUAL LABORATORY A Thesis by SANDRA PATRICIA SANCHEZ Submitted to the Office of Graduate Studies of Texas ARM University m partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... May 2001 Major Sublect: Computer Science AN INTELLIGENT FILTER FOR AN EDUCATIONAL VIRTUAL LASORATORY A Thesis by SANDRA PATRICIA SANCHEZ Submttted to Texas ARM Untversity in partial fulfillment of the requtrements for the degree of MASTER...

  10. Human Reliability Analysis for Small Modular Reactors

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman

    2012-06-01T23:59:59.000Z

    Because no human reliability analysis (HRA) method was specifically developed for small modular reactors (SMRs), the application of any current HRA method to SMRs represents tradeoffs. A first- generation HRA method like THERP provides clearly defined activity types, but these activity types do not map to the human-system interface or concept of operations confronting SMR operators. A second- generation HRA method like ATHEANA is flexible enough to be used for SMR applications, but there is currently insufficient guidance for the analyst, requiring considerably more first-of-a-kind analyses and extensive SMR expertise in order to complete a quality HRA. Although no current HRA method is optimized to SMRs, it is possible to use existing HRA methods to identify errors, incorporate them as human failure events in the probabilistic risk assessment (PRA), and quantify them. In this paper, we provided preliminary guidance to assist the human reliability analyst and reviewer in understanding how to apply current HRA methods to the domain of SMRs. While it is possible to perform a satisfactory HRA using existing HRA methods, ultimately it is desirable to formally incorporate SMR considerations into the methods. This may require the development of new HRA methods. More practicably, existing methods need to be adapted to incorporate SMRs. Such adaptations may take the form of guidance on the complex mapping between conventional light water reactors and small modular reactors. While many behaviors and activities are shared between current plants and SMRs, the methods must adapt if they are to perform a valid and accurate analysis of plant personnel performance in SMRs.

  11. Virtual sine arm kinematic mount system

    SciTech Connect (OSTI)

    Xu, Z.; Randall, K.J. [Argonne National Lab., IL (United States). Advanced Photon Source

    1997-09-01T23:59:59.000Z

    A novel kinematic mount system for a vertical focusing mirror of the soft x-ray spectroscopy beamline at the Advanced Photon Source is described. The system contains three points in a horizontal plane. Each point consists of two horizontal linear precision stages, a spherical ball bearing, and a vertical precision stage. The horizontal linear stages are aligned orthogonally and are conjoined by a spherical ball bearing, supported by the vertical linear stage at each point. The position of each confined horizontal stage is controlled by a motorized micrometer head by spring-loading the flat tip of the micrometer head onto a tooling ball fixing on the carriage of the stage. A virtual sine arm is formed by tilting the upstream horizontal stage down and the two downstream horizontal stages up by a small angle. The fine pitch motion is achieved by adjusting the upstream stage. This supporting structure is extremely steady due to a relatively large span across the supporting points and yields extremely high resolution on the pitch motion. With a one degree tilt and a microstepping motor, the authors achieved a 0.4 nanoradian resolution on the mirror pitch motion.

  12. Generation IV Nuclear Energy Systems Construction Cost Reductions through the Use of Virtual Environments - Task 5 Report: Generation IV Reactor Virtual Mockup Proof-of-Principle Study

    SciTech Connect (OSTI)

    Timothy Shaw; Anthony Baratta; Vaughn Whisker

    2005-02-28T23:59:59.000Z

    Task 5 report is part of a 3 year DOE NERI-sponsored effort evaluating immersive virtual reality (CAVE) technology for design review, construction planning, and maintenance planning and training for next generation nuclear power plants. Program covers development of full-scale virtual mockups generated from 3D CAD data presented in a CAVE visualization facility. Created a virtual mockup of PBMR reactor cavity and discussed applications of virtual mockup technology to improve Gen IV design review, construction planning, and maintenance planning.

  13. MPEG-4 Body Animation Parameters (BAPs) are used for animation of MPEG-4 compliant virtual human-like characters. Distributed virtual reality applications and networked games on

    E-Print Network [OSTI]

    Li, Kang

    Power Aware Compression Algorithms for MPEG-4 Virtual Human Animation in Mobile Computers Siddhartha virtual human (avatar) animation is used in many applications that depict human models interacting decompression, is needed. MPEG-4 has proposed H-Anim standards to represent virtual human-like characters [7] [8

  14. Load Response Fundamentally Matches Power System Reliability Requirements

    SciTech Connect (OSTI)

    Kirby, Brendan J [ORNL] [ORNL

    2007-01-01T23:59:59.000Z

    Responsive load is the most underutilized reliability resource available to the power system. Loads are frequently barred from providing the highest value and most critical reliability services; regulation and spinning reserve. Advances in communications and control technology now make it possible for some loads to provide both of these services. The limited storage incorporated in some loads better matches their response capabilities to the fast reliability-service markets than to the hourly energy markets. Responsive loads are frequently significantly faster and more accurate than generators, increasing power system reliability. Incorporating fast load response into microgrids further extends the reliability response capabilities that can be offered to the interconnected power system. The paper discusses the desired reliability responses, why this matches some loads' capabilities, what the advantages are for the power system, implications for communications and monitoring requirements, and how this resource can be exploited.

  15. 1992 annual report of the North American Electric Reliability Council

    SciTech Connect (OSTI)

    Not Available

    1992-01-01T23:59:59.000Z

    This report describes the operation and concerns of the North American Electric Reliability Council and contains contributions from each of its member regional councils concerning reliability of electric power in their representative areas. The topics of the reports include current and future electric system reliability, regional monitoring, planning, telecommunications, the generating availability data system, technical services available, installed capacity changes, equipment changes, unusual events, hurricane Andrew, and ice storms.

  16. Competition and Reliability in North American Energy Markets...

    Energy Savers [EERE]

    Issue Paper Synopses Jack Casazza, Frank Delea, and George Loehr argue that "deregulation and restructuring have had a devastating effect on the reliability of the North...

  17. Office of Electricity Delivery And Energy Reliability To Hold...

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

    Office of Electricity Delivery And Energy Reliability To Hold Technical Conference On The Design Of Future Electric Transmission Office of Electricity Delivery And Energy...

  18. applying software reliability: Topics by E-print Network

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

    12;The US Space Shuttle Feitelson, Dror 6 Aarhus Universitet Reliable Software and Architecture Computer Technologies and Information Sciences Websites Summary: Aarhus Universitet...

  19. Sandia Energy - Reliability, O&M, Standards Development

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

    and reduce performance risks and costs. With elements of reliability and performance engineering, this work can leverage the knowledge of DOE researchers and the results of...

  20. Imprecise reliability by evidential networks Christophe SIMON and Philippe WEBER

    E-Print Network [OSTI]

    Boyer, Edmond

    Imprecise reliability by evidential networks Christophe SIMON and Philippe WEBER October 3, 2008 to adequately tell variability from imprecision. Many representations exist C. Simon and Ph. Weber

  1. NREL Gearbox Reliability Collaborative Analysis Round Robin: Preprint

    SciTech Connect (OSTI)

    Oyague, F.; Butterfield, C. P.; Sheng, S.

    2009-05-01T23:59:59.000Z

    The Gearbox Reliability Collaborative is working to determine the causes and loading conditions that result in the premature failure of wind turbine gearboxes.

  2. Microsoft PowerPoint - Sandia Inverter Systemic Reliability Presentati...

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

    Copyright 2013, First Solar, Inc. 2 Topic Review * First Solar Plant & Location Overview * Overview of Reliability * Component Review * 'Soft' Failures Review Copyright 2013,...

  3. Power Electronics Reliability Kick Off Meeting ? Silicon Power...

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

    Validated Through Broad Use Boating Defense Machine Tool Wind Energy Semiconductors Health Care 2 Project Goals * Better understand the current and future reliability of...

  4. On the Reliability of System Identification: Applications of Bootstrap Theory

    E-Print Network [OSTI]

    Kareem, Ahsan

    1 On the Reliability of System Identification: Applications of Bootstrap Theory T. Kijewski & A of Notre Dame, Notre Dame, IN, USA Keywords: bootstrapping, system identification, Monte Carlo, damping

  5. advance capability reliability: Topics by E-print Network

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

    future employees with the strategic business objectives. Jussi Stader; Ann Macintosh 1999-01-01 48 PLPD: reliable protein localization prediction from imbalanced and overlapped...

  6. Sandia National Laboratories: assess PV system reliability issues

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

    system reliability issues Solar Regional Test Center in Vermont Achieves Milestone Installation On September 23, 2014, in Concentrating Solar Power, Energy, Facilities, National...

  7. Project Profile: Physics-Based Reliability Models for Supercritical...

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

    developed models to predict the reliability of hybrid gas bearing (HGB) and dry gas seal (DGS) components in the turboexpander of a supercritical CO2 turbine. The...

  8. architecture reliability analysis: Topics by E-print Network

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

    Henrik Brbak 4 Global methodology in control architecture to improve mobile robot reliability Physics Websites Summary: Global methodology in control architecture to...

  9. Gearbox Reliability Collaborative Experimental Data Overview & Analysis (Presentation)

    SciTech Connect (OSTI)

    Oyague, F.

    2010-05-01T23:59:59.000Z

    This presentation details how wind turbine gearboxes fail to meet 20-year design life and how the Gearbox Reliability Collaborative (GRC) is addressing the challenges.

  10. Thermal Stress and Reliability for Advanced Power Electronics...

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

    More Documents & Publications Thermal Stress and Reliability for Advanced Power Electronics and Electric Machines Power Electronic Thermal System Performance and Integration...

  11. Office of Electricity Delivery and Energy Reliability | Department...

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

    & Internships Funding Opportunities Information Center Contact Us Energy.gov Office of Electricity Delivery & Energy Reliability 1000 Independence Avenue, SW Washington, DC...

  12. Smart Grid: Creating Jobs while Delivering Reliable,Environmentally...

    Open Energy Info (EERE)

    Smart Grid: Creating Jobs while Delivering Reliable, Environmentally-friendly Energy Home > Groups > OpenEI Community Central Graham7781's picture Submitted by Graham7781(2017)...

  13. Electro-thermal-mechanical Simulation and Reliability for Plug...

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

    Peer Evaluation Meeting ape026hefner2012o.pdf More Documents & Publications Electro-thermal-mechanical Simulation and Reliability for Plug-in Vehicle Converters and Inverters...

  14. Sandia National Laboratories: very high solar energy reliability

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

    reliability ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration, Energy, Energy Surety, Facilities, Grid...

  15. Virtual Simulation of Vision 21 Energy Plants

    SciTech Connect (OSTI)

    Syamlal, Madhava; Felix, Paul E.; Osawe, Maxwell O. (Fluent Inc.); Fiveland, Woodrow A.; Sloan, David G. (ALSTOM Power); Zitney, Stephen E. (Aspen Technology, Inc.); Joop, Frank (Intergraph Corporation); Cleetus, Joseph; Lapshin, Igor B. (Concurrent Engineering Research Center, West Virginia University)

    2001-11-06T23:59:59.000Z

    The Vision 21 Energy plants will be designed by combining several individual power, chemical, and fuel-conversion technologies. These independently developed technologies or technology modules can be interchanged and combined to form the complete Vision 21 plant that achieves the needed level of efficiency and environmental performance at affordable costs. The knowledge about each technology module must be captured in computer models so that the models can be linked together to simulate the entire Vision 21 power plant in a Virtual Simulation environment. Eventually the Virtual Simulation will find application in conceptual design, final design, plant operation and control, and operator training. In this project we take the first step towards developing such a Vision 21 Simulator. There are two main knowledge domains of a plant--the process domain (what is in the pipes), and the physical domain (the pipes and equipment that make up the plant). Over the past few decades, commercial software tools have been developed for each of these functions. However, there are three main problems that inhibit the design and operation of power plants: (1) Many of these tools, largely developed for chemicals and refining, have not been widely adopted in the power industry. (2) Tools are not integrated across functions. For example, the knowledge represented by computational fluid dynamics (CFD) models of equipment is not used in process-level simulations. (3) No tool exists for readily integrating the design and behavioral knowledge about components. These problems must be overcome to develop the Vision 21 Simulator. In this project our major objective is to achieve a seamless integration of equipment-level and process-level models and apply the integrated software to power plant simulations. Specifically we are developing user-friendly tools for linking process models (Aspen Plus) with detailed equipment models (FLUENT CFD and other proprietary models). Such integration will ensure that consistent and complete knowledge about the process is used for design and optimization. The technical objectives of the current project are the following: Develop a software integration tool called the V21-Controller to mediate the information exchange between FLUENT, other detailed equipment models, and Aspen Plus. Define and publish software interfaces so that software and equipment vendors may integrate their computer models into the software developed in this project. Demonstrate the application of the integrated software with two power plant simulations, one for a conventional steam plant and another for an advanced power cycle. The project was started in October 2000. Highlights of the accomplishments during the first year of the project are the following: Formed a multi-disciplinary project team consisting of chemical and mechanical engineers; computer scientists; CFD, process simulation, and plant design software developers; and power plant designers. Developed a prototype of CFD and process model integration: a stirred tank reactor model based on FLUENT was inserted into a flow sheet model based on Aspen Plus. The prototype was used to show the effect of shaft speed (a parameter in the CFD model) on the product yield and purity (results of process simulation). This demonstrated the optimization of an equipment item in the context of the entire plant rather than in isolation. Conducted a user survey and wrote the User Requirements, Software Requirements and Software Design documents for the V21-Controller. Adopted CAPE-OPEN standard interfaces for communications between equipment and process models. Developed a preliminary version of the V21-Controller based on CAPE-OPEN interfaces. Selected one unit of an existing conventional steam plant (Richmond Power & Light) as the first demonstration case and developed an Aspen Plus model of the steam-side of the unit. A model for the gas-side of the unit, based on ALSTOM's proprietary model INDVU, was integrated with the Aspen Plus model. An industrial Advisory Board was formed to guide the software deve

  16. Gearbox Reliability Collaborative Project Report: Findings from Phase 1 and Phase 2 Testing

    SciTech Connect (OSTI)

    Link, H.; LaCava, W.; van Dam, J.; McNiff, B.; Sheng, S.; Wallen, R.; McDade, M.; Lambert, S.; Butterfield, S.; Oyague, F.

    2011-06-01T23:59:59.000Z

    This report describes the Gearbox Reliability Collaborative's work at NREL to increase the reliability of wind turbine gearboxes.

  17. Computational Thermochemistry and Benchmarking of Reliable Methods

    SciTech Connect (OSTI)

    Feller, David F.; Dixon, David A.; Dunning, Thom H.; Dupuis, Michel; McClemore, Doug; Peterson, Kirk A.; Xantheas, Sotiris S.; Bernholdt, David E.; Windus, Theresa L.; Chalasinski, Grzegorz; Fosada, Rubicelia; Olguim, Jorge; Dobbs, Kerwin D.; Frurip, Donald; Stevens, Walter J.; Rondan, Nelson; Chase, Jared M.; Nichols, Jeffrey A.

    2006-06-20T23:59:59.000Z

    During the first and second years of the Computational Thermochemistry and Benchmarking of Reliable Methods project, we completed several studies using the parallel computing capabilities of the NWChem software and Molecular Science Computing Facility (MSCF), including large-scale density functional theory (DFT), second-order Moeller-Plesset (MP2) perturbation theory, and CCSD(T) calculations. During the third year, we continued to pursue the computational thermodynamic and benchmarking studies outlined in our proposal. With the issues affecting the robustness of the coupled cluster part of NWChem resolved, we pursued studies of the heats-of-formation of compounds containing 5 to 7 first- and/or second-row elements and approximately 10 to 14 hydrogens. The size of these systems, when combined with the large basis sets (cc-pVQZ and aug-cc-pVQZ) that are necessary for extrapolating to the complete basis set limit, creates a formidable computational challenge, for which NWChem on NWMPP1 is well suited.

  18. Individual Differences in Human Reliability Analysis

    SciTech Connect (OSTI)

    Jeffrey C. Joe; Ronald L. Boring

    2014-06-01T23:59:59.000Z

    While human reliability analysis (HRA) methods include uncertainty in quantification, the nominal model of human error in HRA typically assumes that operator performance does not vary significantly when they are given the same initiating event, indicators, procedures, and training, and that any differences in operator performance are simply aleatory (i.e., random). While this assumption generally holds true when performing routine actions, variability in operator response has been observed in multiple studies, especially in complex situations that go beyond training and procedures. As such, complexity can lead to differences in operator performance (e.g., operator understanding and decision-making). Furthermore, psychological research has shown that there are a number of known antecedents (i.e., attributable causes) that consistently contribute to observable and systematically measurable (i.e., not random) differences in behavior. This paper reviews examples of individual differences taken from operational experience and the psychological literature. The impact of these differences in human behavior and their implications for HRA are then discussed. We propose that individual differences should not be treated as aleatory, but rather as epistemic. Ultimately, by understanding the sources of individual differences, it is possible to remove some epistemic uncertainty from analyses.

  19. Opposed-flow virtual cyclone for particle concentration

    DOE Patents [OSTI]

    Rader, Daniel J. (Lafayette, CA); Torczynski, John R. (Albuquerque, NM)

    2000-12-05T23:59:59.000Z

    An opposed-flow virtual cyclone for aerosol collation which can accurately collect, classify, and concentrate (enrich) particles in a specific size range. The opposed-flow virtual cyclone is a variation on the virtual cyclone and has its inherent advantages (no-impact particle separation in a simple geometry), while providing a more robust design for concentrating particles in a flow-through type system. The opposed-flow virtual cyclone consists of two geometrically similar virtual cyclones arranged such that their inlet jets are inwardly directed and symmetrically opposed relative to a plane of symmetry located between the two inlet slits. A top plate bounds both jets on the "top" side of the inlets, while the other or lower wall curves "down" and away from each inlet jet. Each inlet jet will follow the adjacent lower wall as it turns away, and that particles will be transferred away from the wall and towards the symmetry plane by centrifugal action. After turning, the two jets merge smoothly along the symmetry line and flow parallel to it through the throat. Particles are transferred from the main flows, across a dividing streamline, and into a central recirculating region, where particle concentrations become greatly increased relative to the main stream.

  20. Virtual Models for Prediction of Wind Turbine Parameters

    E-Print Network [OSTI]

    Andrew Kusiak

    Abstract—In this paper, a data-driven methodology for the development of virtual models of a wind turbine is presented. To demonstrate the proposed methodology, two parameters of the wind turbine have been selected for modeling, namely, power output and rotor speed. A virtual model for each of the two parameters is developed and tested with data collected at a wind farm. Both models consider controllable and noncontrollable parameters of the wind turbine, as well as the delay effect of wind speed and other parameters. To mitigate data bias of each virtual model and ensure its robustness, a training set is assembled from ten randomly selected turbines. The performance of a virtual model is largely determined by the input parameters selected and the data mining algorithms used to extract the model. Several data mining algorithms for parameter selection and model extraction are analyzed. The research presented in the paper is illustrated with computational results. Index Terms—Data mining, parameter selection, power prediction, virtual model, wind turbine. I.

  1. Reliability Testing of Polysilicon For MEMs Devices

    SciTech Connect (OSTI)

    LaVan, D.A.; Buchheit, T.E.

    1999-04-05T23:59:59.000Z

    Mission critical applications of MEMS devices require knowledge of the distribution in their material properties and long-term reliability of the small-scale structures. This project reports on a new testing program at Sandia to quantify the strength distribution using samples that reflect the dimensions of critical MEMS components. The strength of polysilicon fabricated with Sandia's SUMMiT 4-layer process was successfully measured using samples with gage sections 2.5 {micro}m thick by 1.7 {micro}m wide and lengths of 15 and 25 {micro}m. These tensile specimens have a freely moving pivot on one end that anchors the sample to the silicon die and prevents off axis loading during testing. Each sample is loaded in uniaxial tension by pulling laterally with a flat tipped diamond in a computer-controlled Nanoindenter. The stress-strain curve is calculated using the specimen cross section and gage length dimensions verified by measuring against a standard in the SEM. The first 48 samples had a means strength of 2.24 {+-} 0.35 GPa. Fracture strength measurements grouped into three strength levels, which matched three failure modes observed in post mortem examinations. The seven samples in the highest strength group failed in the gage section (strength of 2.77 {+-} 0.04 GPa), the moderate strength group failed at the gage section fillet and the lowest strength group failed at a dimple in the hub. With this technique, multiple tests can be programmed at one time and performed without operator assistance at a rate of 20-30 per day allowing the collection of significant populations of data. Since the new test geometry has been proven, the project is moving to test the distributions seen from real geometric features typical to MEMS such as the effect of gage length, fracture toughness, bonding between layers, etch holes, dimples and shear of gear teeth.

  2. Nuclear Decommissioning and Organisational Reliability: Involving Subcontractors in Collective Action

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Page 1 Nuclear Decommissioning and Organisational Reliability: Involving Subcontractors to the decommissioning. The use of subcontractors is not new; in the nuclear industry it became widespread in the 1990s reliability is at the heart of the safety of at-risk systems. Many studies have been conducted in the nuclear

  3. An Examination of Temporal Trends in Electricity Reliability Based on

    E-Print Network [OSTI]

    , national-scale information on the reliability of the U.S. electric power system is lacking. This report. In principle, comprehensive information on the actual reliability of the electric power system and on how January 2012 The work described in this report was funded by the Office of Electricity Delivery and Energy

  4. GPGPUs: How to Combine High Computational Power with High Reliability

    E-Print Network [OSTI]

    Gurumurthi, Sudhanva

    recent results derived from radiation experiments about the reliability of GPGPUs. Third, it describes of applications running on GPGPUs. Keywords--GPGPUs, reliability, HPC, fault injection, radiation experiments I their appearance on the market. Their very high computational power combined with low cost, reduced power

  5. Assessing the reliability of linear dynamic transformer thermal modelling

    E-Print Network [OSTI]

    Assessing the reliability of linear dynamic transformer thermal modelling X. Mao, D.J. Tylavsky and G.A. McCulla Abstract: Improving the utilisation of transformers requires that the hot-spot and top. An alternative method for assessing transformer model reliability is provided. 1 Introduction The maximally

  6. Consensus alignment server for reliable comparative modeling with distant templates

    E-Print Network [OSTI]

    Vajda, Sandor

    Consensus alignment server for reliable comparative modeling with distant templates Jahnavi C; Accepted April 26, 2004 ABSTRACT Consensus is a server developed to produce high- quality alignments different align- ment methods, the server produces a consensus alignment, with a reliability measure

  7. On Improving the Performance of Reliable Server Pooling Systems

    E-Print Network [OSTI]

    Dreibholz, Thomas

    On Improving the Performance of Reliable Server Pooling Systems for Distance-Sensitive Distributed, Germany, dreibh@iem.uni-due.de, http://www.exp-math.uni-essen.de/~dreibh Abstract. Reliable Server Pooling (RSerPool) is a protocol framework for server redundancy and session failover, currently under

  8. Improving the Load Balancing Performance of Reliable Server Pooling

    E-Print Network [OSTI]

    Dreibholz, Thomas

    Improving the Load Balancing Performance of Reliable Server Pooling in Heterogeneous Capacity@iem.uni-due.de Abstract. The IETF is currently standardizing a light-weight protocol frame- work for server redundancy and session failover: Reliable Server Pooling (RSer- Pool). It is the novel combination of ideas from

  9. Towards Reliable SubDivision of Geological Areas: Interval Approach

    E-Print Network [OSTI]

    Kreinovich, Vladik

    Towards Reliable Sub­Division of Geological Areas: Interval Approach David D. Coblentz 1;2 , Vladik difficult to produce a reliable subdivision. The subdivision of a geological zone into segments is often, and often, we do not have a statistically sufficient amount of thoroughly analyzed geological samples

  10. Towards Reliable SubDivision of Geological Areas: Interval Approach

    E-Print Network [OSTI]

    Kreinovich, Vladik

    Towards Reliable Sub­Division of Geological Areas: Interval Approach David D. Coblentz 1;2 , Vladik Difficult to Produce a Reliable Subdivision The subdivision of a geological zone into segments is often the area, and often, we do not have a statistically sufficient amount of thoroughly analyzed geological

  11. Gearbox Reliability Collaborative High Speed Shaft Tapered Roller Bearing Calibration

    SciTech Connect (OSTI)

    Keller, J.; Guo, Y.; McNiff, B.

    2013-10-01T23:59:59.000Z

    The National Renewable Energy Laboratory (NREL) Gearbox Reliability Collaborative (GRC) is a project investigating gearbox reliability primarily through testing and modeling. Previous dynamometer testing focused upon acquiring measurements in the planetary section of the test gearbox. Prior to these tests, the strain gages installed on the planetary bearings were calibrated in a load frame.

  12. MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER

    E-Print Network [OSTI]

    1 MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER Engineering and Economics of Electricity Research Group (E3 RG) CORNELL UNIVERSITY E3 RG contributing authors: Robert Thomas, Director the Consortium for Electric Reliability Technology Solutions (CERTS) and in part by the National Science

  13. PSFQ: A Reliable Transport Protocol for Wireless Sensor Networks

    E-Print Network [OSTI]

    Han, Richard Y.

    PSFQ: A Reliable Transport Protocol for Wireless Sensor Networks Chieh-Yih Wan Dept. of Electrical class of reliable data applications emerging in wireless sensor networks. For example, currently sensor of sensors in wireless sensor networks on the fly (e.g., during disaster recovery). Due to the application

  14. Separating myths from reality in PV inverter reliability

    E-Print Network [OSTI]

    Rollins, Andrew M.

    Separating myths from reality in PV inverter reliability Or, How I learned to stop worrying: Navigant Consulting report to NREL on PV inverter status. NCI found that inverters were limited by 18 and love the BOM Timothy J. Peshek SDLE Reliability workshop, CWRU 4/9/2012 #12;What inverter manufacturers

  15. IEEE TRANSACTIONS ON RELIABILITY 1 Optimal Maintenance Strategies for Wind

    E-Print Network [OSTI]

    Ntaimo, Lewis

    from sensors, our research objective is to derive an optimal observation and preventive maintenance TRANSACTIONS ON RELIABILITY 3 ACRONYMS NA no action PM preventive maintenance OB observation CM correctiveIEEE TRANSACTIONS ON RELIABILITY 1 Optimal Maintenance Strategies for Wind Turbine Systems Under

  16. Reducing Complexity and Improving the Reliability of Frequency Reconfigurable Antennas

    E-Print Network [OSTI]

    the desired performance. In this paper, we minimize the number of electronic components used to reconfigureReducing Complexity and Improving the Reliability of Frequency Reconfigurable Antennas J-- In this paper the complexity and reliability of frequency reconfigurable antennas are presented. A new approach

  17. Review Article Gate-Level Circuit Reliability Analysis: A Survey

    E-Print Network [OSTI]

    Chen, Chunhong

    electronic components (such as single electron devices) have demonstrated their nondeterministic characReview Article Gate-Level Circuit Reliability Analysis: A Survey Ran Xiao and Chunhong Chen. Circuit reliability has become a growing concern in today's nanoelectronics, which motivates strong

  18. Issue Papers on Reliability and Competition Thomas August 2005

    E-Print Network [OSTI]

    Electric Power Industry Restructuring and Grid Reliability Robert J. Thomas, Professor School of Electrical and Computer Engineering, Cornell University Introduction Electric power in the U.S. is a more than $250). The electricity system is a critical infrastructure; its continued and reliable functioning is essential

  19. A Reliable method for Blind Channel Identification using Burst Data

    E-Print Network [OSTI]

    Raphaeli, Dan

    1 A Reliable method for Blind Channel Identification using Burst Data Dan Raphaeli, Senior Member Output (MISO) FIR channels with nonminimum phase. The approach is based on mini- mizing a cost function of identification success when consider- ing statistical channels, its ability to obtain reliable channel estimates

  20. Reliability of Heterogeneous Distributed Computing Systems in the Presence

    E-Print Network [OSTI]

    Hayat, Majeed M.

    Reliability of Heterogeneous Distributed Computing Systems in the Presence of Correlated Failures of distributed-computing systems (DCSs) has been widely studied under the assumption that computing elements (CEs of correlated failures are also investigated. Index Terms--Distributed computing, load balancing, reliability

  1. Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems

    E-Print Network [OSTI]

    Bianchini, Ricardo

    Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems Rekha Bachwani-scale storage systems can be significantly improved by using bet- ter reliability metrics and more efficient on a distributed storage system based on erasure codes. We find that MinI improves relia- bility significantly

  2. ContentsContents4466Reliability and quality control

    E-Print Network [OSTI]

    Vickers, James

    outcomes You will first learn about the importance of the concept of reliability applied to systems such things as maintenance and part replacement schedules, whole system replacements and reliability testing systems understand the relationship between the Weibull distribution and the exponential distribution #12

  3. Maximizing Service Reliability in Distributed Computing Systems with Random Node

    E-Print Network [OSTI]

    Hayat, Majeed M.

    Maximizing Service Reliability in Distributed Computing Systems with Random Node Failures: Theory Member, IEEE Abstract--In distributed computing systems (DCSs) where server nodes can fail permanently with nonzero probability, the system performance can be assessed by means of the service reliability, defined

  4. A summary of North American HVDC converter station reliability specifications

    SciTech Connect (OSTI)

    Vancers, I. (ABB Power Systems Inc., Los Angeles, CA (United States)); Hormozi, F.J. (Los Angeles Dept. of Water and Power, CA (United States))

    1993-07-01T23:59:59.000Z

    This paper summarizes Reliability, Availability, and Maintainability (RAM) specifications that were issued for thyristor based HVDC converter stations in service in North America. A total of twenty project specifications are summarized. A detailed summary by project is shown with specific quantitative requirements categorized. Definitions of terms, representative design principles, and formulas used in calculating RAM parameters contained in existing reliability specifications are presented.

  5. RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT)

    E-Print Network [OSTI]

    Bernstein, Joseph B.

    RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT) Yizhou Lu, T. M. Delorm, A. Christou of survivor functions R(t) of drive-trains, after 1 year of operation, between Offshore Wind Turbine (OWT) vs of the reliability of these 5 Types Surrogate failure rate data Onshore wind turbines (OT) 1-1.5MW CONCLUSIONS

  6. Wind turbine reliability : a database and analysis approach.

    SciTech Connect (OSTI)

    Linsday, James (ARES Corporation); Briand, Daniel; Hill, Roger Ray; Stinebaugh, Jennifer A.; Benjamin, Allan S. (ARES Corporation)

    2008-02-01T23:59:59.000Z

    The US wind Industry has experienced remarkable growth since the turn of the century. At the same time, the physical size and electrical generation capabilities of wind turbines has also experienced remarkable growth. As the market continues to expand, and as wind generation continues to gain a significant share of the generation portfolio, the reliability of wind turbine technology becomes increasingly important. This report addresses how operations and maintenance costs are related to unreliability - that is the failures experienced by systems and components. Reliability tools are demonstrated, data needed to understand and catalog failure events is described, and practical wind turbine reliability models are illustrated, including preliminary results. This report also presents a continuing process of how to proceed with controlling industry requirements, needs, and expectations related to Reliability, Availability, Maintainability, and Safety. A simply stated goal of this process is to better understand and to improve the operable reliability of wind turbine installations.

  7. Systems reliability analysis for the national ignition facility

    SciTech Connect (OSTI)

    Majumdar, K.C.; Annese, C.E.; MacIntyre, A.T.; Sicherman, A.

    1996-06-12T23:59:59.000Z

    A Reliability, Availability and Maintainability (RAM) analysis was initiated for the National Ignition Facility (NIF). The NIF is an inertial confinement fusion research facility designed to achieve controlled thermonuclear reaction; the preferred site for the NIF is the Lawrence Livermore National Laboratory (LLNL). The NIF RAM analysis has three purposes: (1) to allocate top level reliability and availability goals for the systems, (2) to develop an operability model for optimum maintainability, and (3) to determine the achievability of the allocated goals of the RAM parameters for the NIF systems and the facility operation as a whole. An allocation model assigns the reliability and availability goals for front line and support systems by a top-down approach; reliability analysis uses a bottom-up approach to determine the system reliability and availability from component level to system level.

  8. Using Highly Interactive Virtual Environments for Safeguards Activities

    SciTech Connect (OSTI)

    Weil, Bradley S [ORNL] [ORNL; Alcala, Benjamin S [ORNL] [ORNL; Alcala, Scott [ORNL] [ORNL; Eipeldauer, Mary D [ORNL] [ORNL; Weil, Logan B [ORNL] [ORNL

    2010-01-01T23:59:59.000Z

    Highly interactive virtual environment (HIVE) is a term that refers to interactive educational simulations, serious games and virtual worlds. Studies indicate that learning with the aid of interactive environments produces better retention and depth of knowledge by promoting improved trainee engagement and understanding. Virtual reality or three dimensional (3D) visualization is often used to promote the understanding of something when personal observation, photographs, drawings, and/or sketches are not possible or available. Subjects and situations, either real or hypothetical, can be developed using a 3D model. Models can be tailored to the audience allowing safeguards and security features to be demonstrated for educational purposes in addition to engineering evaluation and performance analysis. Oak Ridge National Laboratory (ORNL) has begun evaluating the feasibility of HIVEs for improving safeguards activities such as training, mission planning, and evaluating worker task performance. This paper will discuss the development workflow of HIVEs and present some recent examples.

  9. Virtual Library on Genetics from Oak Ridge National Laboratory

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The World Wide Web (WWW) Virtual Library is a collaborative effort to provide topic indices that break down into many subtopics guiding users to vast resources of information around the world. ORNL hosts the Virtual Library on Genetics as part of the WWWVL's Biosciences topic area. The VL on Genetics is also a collection of links to information resources that supported the DOE Human Genome Project. That project has now evolved into Genomics: GTL. GTL is DOE's next step in genomics--builds on data and resources from the Human Genome Project, the Microbial Genome Program, and systems biology. GTL will accelerate understanding of dynamic living systems for solutions to DOE mission challenges in energy and the environment. The section of the Virtual Library on Genetics that is titled Organisms guides users to genetic information resources and gene sequences for animals, insects, microbes, and plant life.

  10. CERTS: Consortium for Electric Reliability Technology Solutions - Research Highlights

    SciTech Connect (OSTI)

    Eto, Joseph

    2003-07-30T23:59:59.000Z

    Historically, the U.S. electric power industry was vertically integrated, and utilities were responsible for system planning, operations, and reliability management. As the nation moves to a competitive market structure, these functions have been disaggregated, and no single entity is responsible for reliability management. As a result, new tools, technologies, systems, and management processes are needed to manage the reliability of the electricity grid. However, a number of simultaneous trends prevent electricity market participants from pursuing development of these reliability tools: utilities are preoccupied with restructuring their businesses, research funding has declined, and the formation of Independent System Operators (ISOs) and Regional Transmission Organizations (RTOs) to operate the grid means that control of transmission assets is separate from ownership of these assets; at the same time, business uncertainty, and changing regulatory policies have created a climate in which needed investment for transmission infrastructure and tools for reliability management has dried up. To address the resulting emerging gaps in reliability R&D, CERTS has undertaken much-needed public interest research on reliability technologies for the electricity grid. CERTS' vision is to: (1) Transform the electricity grid into an intelligent network that can sense and respond automatically to changing flows of power and emerging problems; (2) Enhance reliability management through market mechanisms, including transparency of real-time information on the status of the grid; (3) Empower customers to manage their energy use and reliability needs in response to real-time market price signals; and (4) Seamlessly integrate distributed technologies--including those for generation, storage, controls, and communications--to support the reliability needs of both the grid and individual customers.

  11. Microworlds, Simulators, and Simulation: Framework for a Benchmark of Human Reliability Data Sources

    SciTech Connect (OSTI)

    Ronald Boring; Dana Kelly; Carol Smidts; Ali Mosleh; Brian Dyre

    2012-06-01T23:59:59.000Z

    In this paper, we propose a method to improve the data basis of human reliability analysis (HRA) by extending the data sources used to inform HRA methods. Currently, most HRA methods are based on limited empirical data, and efforts to enhance the empirical basis behind HRA methods have not yet yielded significant new data. Part of the reason behind this shortage of quality data is attributable to the data sources used. Data have been derived from unrelated industries, from infrequent risk-significant events, or from costly control room simulator studies. We propose a benchmark of four data sources: a simplified microworld simulator using unskilled student operators, a full-scope control room simulator using skilled student operators, a full-scope control room simulator using licensed commercial operators, and a human performance modeling and simulation system using virtual operators. The goal of this research is to compare findings across the data sources to determine to what extent data may be used and generalized from cost effective sources.

  12. A secure email login system using virtual password

    E-Print Network [OSTI]

    Doshi, Nishant

    2010-01-01T23:59:59.000Z

    In today's world password compromise by some adversaries is common for different purpose. In ICC 2008 Lei et al. proposed a new user authentication system based on the virtual password system. In virtual password system they have used linear randomized function to be secure against identity theft attacks, phishing attacks, keylogging attack and shoulder surfing system. In ICC 2010 Li's given a security attack on the Lei's work. This paper gives modification on Lei's work to prevent the Li's attack with reducing the server overhead. This paper also discussed the problems with current password recovery system and gives the better approach.

  13. E L S E V I E R Reliability Engineering and System Safety 70 (2000)29-39 RELIABILITY

    E-Print Network [OSTI]

    Sommerville, Ian

    2000-01-01T23:59:59.000Z

    -boardcomputer system in place of a driver to control the hydraulics and thereforethe machine.It is being developedwithE L S E V I E R Reliability Engineering and System Safety 70 (2000)29-39 RELIABILITY ENGINEERING & SYSTEM SAFETY www.elsevier.com/locate/ress Safetyanalysisof autonomousexcavatorfunctionality D. Sewardu

  14. Online Policies for Opportunistic Virtual MISO Routing in Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Rossi, Michele

    Online Policies for Opportunistic Virtual MISO Routing in Wireless Ad Hoc Networks Cristiano in virtual multiple input single output (MISO) trans- missions and space-time block codes have been proposed

  15. Haptic Rendering of Topological Constraints to Users Manipulating Serial Virtual Linkages

    E-Print Network [OSTI]

    Constantinescu, Daniela

    Haptic Rendering of Topological Constraints to Users Manipulating Serial Virtual Linkages Daniela-- This paper presents an approach for haptic rendering of topological constraints to users operating serial rendering. I. INTRODUCTION Haptic interaction with physically-motivated virtual en- vironments provides

  16. TR2004-518, Dartmouth College, Computer Science Creating and Detecting Doctored and Virtual Images

    E-Print Network [OSTI]

    of "virtual porn". In 2002, the United States Supreme Court found that portions of the CPPA, being overly types of "virtual porn". In 2002 the United States Supreme Court found that portions of the CPPA, being

  17. Automatic Modeling of Virtual Humans and Body Clothing Nadia Magnenat-Thalmann, Hyewon Seo, Frederic Cordier

    E-Print Network [OSTI]

    Cordier, Frederic

    Automatic Modeling of Virtual Humans and Body Clothing Nadia Magnenat-Thalmann, Hyewon Seo-mail: {thalmann, seo, cordier}@miralab.unige.ch Abstract Highly realistic virtual human models are rapidly

  18. Project PEAC : a Personal, Expressive Avatar Controller for the operation of virtual characters

    E-Print Network [OSTI]

    Santos, Kristopher B. dos

    2010-01-01T23:59:59.000Z

    The purpose of this thesis was to design and construct a prototype for the control of virtual avatars in a virtual space. It was designed with the intent to feature multiple interfaces such that the user would have many ...

  19. A two-stage circumferential slot virtual impactor for bioaerosol concentration

    E-Print Network [OSTI]

    Isaguirre, Refugio Rey, IV

    2009-06-02T23:59:59.000Z

    Slot virtual impactors provide an efficient low power method of concentrating aerosols. A circumferential slot virtual impactor (CSVI) is especially effective because it has a continuous slot, and, therefore, has no losses associated with the ends...

  20. Robust Design of Reliability Test Plans Using Degradation Measures.

    SciTech Connect (OSTI)

    Lane, Jonathan Wesley; Lane, Jonathan Wesley; Crowder, Stephen V.; Crowder, Stephen V.

    2014-10-01T23:59:59.000Z

    With short production development times, there is an increased need to demonstrate product reliability relatively quickly with minimal testing. In such cases there may be few if any observed failures. Thus, it may be difficult to assess reliability using the traditional reliability test plans that measure only time (or cycles) to failure. For many components, degradation measures will contain important information about performance and reliability. These measures can be used to design a minimal test plan, in terms of number of units placed on test and duration of the test, necessary to demonstrate a reliability goal. Generally, the assumption is made that the error associated with a degradation measure follows a known distribution, usually normal, although in practice cases may arise where that assumption is not valid. In this paper, we examine such degradation measures, both simulated and real, and present non-parametric methods to demonstrate reliability and to develop reliability test plans for the future production of components with this form of degradation.