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


1

A framework for benchmarking land models  

SciTech Connect

Land models, which have been developed by the modeling community in the past few decades to predict future states of ecosystems and climate, have to be critically evaluated for their performance skills of simulating ecosystem responses and feedback to climate change. Benchmarking is an emerging procedure to measure performance of models against a set of defined standards. This paper proposes a benchmarking framework for evaluation of land model performances and, meanwhile, highlights major challenges at this infant stage of benchmark analysis. The framework includes (1) targeted aspects of model performance to be evaluated, (2) a set of benchmarks as defined references to test model performance, (3) metrics to measure and compare performance skills among models so as to identify model strengths and deficiencies, and (4) model improvement. Land models are required to simulate exchange of water, energy, carbon and sometimes other trace gases between the atmosphere and land surface, and should be evaluated for their simulations of biophysical processes, biogeochemical cycles, and vegetation dynamics in response to climate change across broad temporal and spatial scales. Thus, one major challenge is to select and define a limited number of benchmarks to effectively evaluate land model performance. The second challenge is to develop metrics of measuring mismatches between models and benchmarks. The metrics may include (1) a priori thresholds of acceptable model performance and (2) a scoring system to combine data model mismatches for various processes at different temporal and spatial scales. The benchmark analyses should identify clues of weak model performance to guide future development, thus enabling improved predictions of future states of ecosystems and climate. The near-future research effort should be on development of a set of widely acceptable benchmarks that can be used to objectively, effectively, and reliably evaluate fundamental properties of land models to improve their prediction performance skills.

Luo, Yiqi [University of Oklahoma; Randerson, James T. [University of California, Irvine; Hoffman, Forrest [ORNL; Norby, Richard J [ORNL

2012-01-01T23:59:59.000Z

2

A framework for benchmarking land models  

SciTech Connect

Land models, which have been developed by the modeling community in the past few decades to predict future states of ecosystems and climate, have to be critically evaluated for their performance skills of simulating ecosystem responses and feedback to climate change. Benchmarking is an emerging procedure to measure performance of models against a set of defined standards. This paper proposes a benchmarking framework for evaluation of land model performances and, meanwhile, highlights major challenges at this infant stage of benchmark analysis. The framework includes (1) targeted aspects of model performance to be evaluated, (2) a set of benchmarks as defined references to test model performance, (3) metrics to measure and compare performance skills among models so as to identify model strengths and deficiencies, and (4) model improvement. Land models are required to simulate exchange of water, energy, carbon and sometimes other trace gases between the atmosphere and land surface, and should be evaluated for their simulations of biophysical processes, biogeochemical cycles, and vegetation dynamics in response to climate change across broad temporal and spatial scales. Thus, one major challenge is to select and define a limited number of benchmarks to effectively evaluate land model performance. The second challenge is to develop metrics of measuring mismatches between models and benchmarks. The metrics may include (1) a priori thresholds of acceptable model performance and (2) a scoring system to combine data–model mismatches for various processes at different temporal and spatial scales. The benchmark analyses should identify clues of weak model performance to guide future development, thus enabling improved predictions of future states of ecosystems and climate. The near-future research effort should be on development of a set of widely acceptable benchmarks that can be used to objectively, effectively, and reliably evaluate fundamental properties of land models to improve their prediction performance skills.

Luo, Yiqi; Randerson, J.; Abramowitz, G.; Bacour, C.; Blyth, E.; Carvalhais, N.; Ciais, Philippe; Dalmonech, D.; Fisher, J.B.; Fisher, R.; Friedlingstein, P.; Hibbard, Kathleen A.; Hoffman, F. M.; Huntzinger, Deborah; Jones, C.; Koven, C.; Lawrence, David M.; Li, D.J.; Mahecha, M.; Niu, S.L.; Norby, Richard J.; Piao, S.L.; Qi, X.; Peylin, P.; Prentice, I.C.; Riley, William; Reichstein, M.; Schwalm, C.; Wang, Y.; Xia, J. Y.; Zaehle, S.; Zhou, X. H.

2012-10-09T23:59:59.000Z

3

ILAMB Goals What is a Benchmark? ILAMB Meeting International Land Model Benchmarking (ILAMB) Project  

E-Print Network (OSTI)

Develop benchmarks for land model performance, with a focus on carbon cycle, ecosystem, surface energy, and hydrological processes. The benchmarks should be designed and accepted by the community. Apply the benchmarks to global models. Support the design and development of a new, open-source, benchmarking software system for either diagnostic or model intercomparison purposes. Strengthen linkages between experimental, monitoring, remote sensing, and climate modeling communities in the design of new model tests and new measurement programs.

Forrest M. Hoffman; James T. R; Forrest M. Hoffman; James T. R; Forrest M. Hoffman; James T. R; Forrest M. Hoffman; James T. R; Forrest M. Hoffman; James T. R

2011-01-01T23:59:59.000Z

4

DOE Commercial Building Benchmark Models: Preprint  

SciTech Connect

To provide a consistent baseline of comparison and save time conducting such simulations, the U.S. Department of Energy (DOE) has developed a set of standard benchmark building models. This paper will provide an executive summary overview of these benchmark buildings, and how they can save building analysts valuable time. Fully documented and implemented to use with the EnergyPlus energy simulation program, the benchmark models are publicly available and new versions will be created to maintain compatibility with new releases of EnergyPlus. The benchmark buildings will form the basis for research on specific building technologies, energy code development, appliance standards, and measurement of progress toward DOE energy goals. Having a common starting point allows us to better share and compare research results and move forward to make more energy efficient buildings.

Torcelini, P.; Deru, M.; Griffith, B.; Benne, K.; Halverson, M.; Winiarski, D.; Crawley, D. B.

2008-07-01T23:59:59.000Z

5

Benchmarking  

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

energy and water use, and rating the energy performance of selected building types. The tool enables users to: * Track multiple energy and water meters; * Benchmark facilities...

6

Topic modeling on historical newspapers  

Science Conference Proceedings (OSTI)

In this paper, we explore the task of automatic text processing applied to collections of historical newspapers, with the aim of assisting historical research. In particular, in this first stage of our project, we experiment with the use of topical models ...

Tze-I Yang; Andrew J. Torget; Rada Mihalcea

2011-06-01T23:59:59.000Z

7

Benchmarking PDR models against the Horsehead edge  

E-Print Network (OSTI)

To prepare for the unprecedented spatial and spectral resolution provided by ALMA and Herschel/HIFI, chemical models are being benchmarked against each other. It is obvious that chemical models also need well-constrained observations that can serve as references. Photo-dissociation regions (PDRs) are particularly well suited to serve as references because they make the link between diffuse and molecular clouds, thus enabling astronomers to probe a large variety of physical and chemical processes. At a distance of 400 pc (1" corresponding to 0.002 pc), the Horsehead PDR is very close to the prototypical kind of source (i.e. 1D, edge-on) needed to serve as a reference to models.

Jérôme Pety; Javier R. Goicoechea; Maryvonne Gerin; Pierre Hily-Blant; David Teyssier; Evelyne Roueff; Emilie Habart; Alain Abergel

2006-12-20T23:59:59.000Z

8

Benchmarking Process Energy Performance From Historical Data: Bringing Sanity into Energy Budgets  

E-Print Network (OSTI)

Reducing energy costs has two components: knowledge of process energy consumption and an energy management process. This concept is summed up in energy management's 2-M rule: to manage energy, energy must be measured. After data on process energy consumption is collected, however, how is it used in developing an energy management system? There are many current methods available for tracking energy use in industrial processes. There are also methods for determining optimum energy use targets for manufacturing processes. In any energy management system, however, a major component is an energy consumption target. The target is used to measure the process's progress in reducing energy costs. This paper describes a method to develop a process energy benchmark from historical data for use as that target.

Severson, D. S.

1996-04-01T23:59:59.000Z

9

Synthetic benchmark for modeling flow in 3D fractured media  

Science Conference Proceedings (OSTI)

Intensity and localization of flows in fractured media have promoted the development of a large range of different modeling approaches including Discrete Fracture Networks, pipe networks and equivalent continuous media. While benchmarked usually within ... Keywords: Benchmark, Fractured media, Single-phase flow, Stochastic model

Jean-Raynald De Dreuzy; GéRaldine Pichot; Baptiste Poirriez; Jocelyne Erhel

2013-01-01T23:59:59.000Z

10

A Benchmark Simulation for Moist Nonhydrostatic Numerical Models  

Science Conference Proceedings (OSTI)

A benchmark solution that facilitates testing the accuracy, efficiency, and efficacy of moist nonhydrostatic numerical model formulations and assumptions is presented. The solution is created from a special configuration of moist model processes ...

George H. Bryan; J. Michael Fritsch

2002-12-01T23:59:59.000Z

11

A Moist Benchmark Calculation for Atmospheric General Circulation Models  

Science Conference Proceedings (OSTI)

A benchmark calculation is designed to compare the climate and climate sensitivity of atmospheric general circulation models (AGCMs). The experimental setup basically follows that of the aquaplanet experiment (APE) proposed by Neale and Hoskins, ...

Myong-In Lee; Max J. Suarez; In-Sik Kang; Isaac M. Held; Daehyun Kim

2008-10-01T23:59:59.000Z

12

Particulate Emissions from a Pre-Emissions Control Era Spark-Ignition Vehicle: A Historical Benchmark  

DOE Green Energy (OSTI)

This study examined the particulate emissions from a pre-emissions control era vehicle operated on both leaded and unleaded fuels for the purpose of establishing a historical benchmark. A pre-control vehicle was located that had been rebuilt with factory original parts to approximate an as-new vehicle prior to 1968. The vehicle had less than 20,000 miles on the rebuilt engine and exhaust. The vehicle underwent repeated FTP-75 tests to determine its regulated emissions, including particulate mass. Additionally, measurements of the particulate size distribution were made, as well as particulate lead concentration. These tests were conducted first with UTG96 certification fuel, followed by UTG96 doped with tetraethyl lead to approximate 1968 levels. Results of these tests, including transmission electron micrographs of individual particles from both the leaded and unleaded case are presented. The FTP composite PM emissions from this vehicle averaged 40.5 mg/mile using unleaded fuel. The results from the leaded fuel tests showed that the FTP composite PM emissions increased to an average of 139.5 mg/mile. Analysis of the particulate size distribution for both cases demonstrated that the mass-based size distribution of particles for this vehicle is heavily skewed towards the nano-particle range. The leaded-fuel tests showed a significant increase in mass concentration at the <0.1 micron size compared with the unleaded-fuel test case. The leaded-fuel tests produced lead emissions of nearly 0.04 g/mi, more than a 4-order-of-magnitude difference compared with unleaded-fuel results. Analysis of the size-fractionated PM samples showed that the lead PM emissions tended to be distributed in the 0.25 micron and smaller size range.

John M.E. Storey; C. Scott Sluder; Douglas A. Blom; Erin Higinbotham

2000-06-19T23:59:59.000Z

13

Snow Model Verification Using Ensemble Prediction and Operational Benchmarks  

Science Conference Proceedings (OSTI)

Hydrologic model evaluations have traditionally focused on measuring how closely the model can simulate various characteristics of historical observations. Although advancing hydrologic forecasting is an often-stated goal of numerous modeling ...

Kristie J. Franz; Terri S. Hogue; Soroosh Sorooshian

2008-12-01T23:59:59.000Z

14

Model-Based Engineering and Manufacturing CAD/CAM Benchmark  

Science Conference Proceedings (OSTI)

The Benehmark Project was created from a desire to identify best practices and improve the overall efficiency and performance of the Y-12 Plant's systems and personnel supprting the manufacturing mission. The mission of the benchmark team was to search out industry leaders in manufacturing and evaluate lheir engineering practices and processes to determine direction and focus fm Y-12 modmizadon efforts. The companies visited included several large established companies and anew, small, high-tech machining firm. As a result of this efforL changes are recommended that will enable Y-12 to become a more responsive cost-effective manufacturing facility capable of suppordng the needs of the Nuclear Weapons Complex (NW@) and Work Fw Others into the 21' century. The benchmark team identified key areas of interest, both focused and gencml. The focus arm included Human Resources, Information Management, Manufacturing Software Tools, and Standarda/ Policies and Practices. Areas of general interest included Inhstructure, Computer Platforms and Networking, and Organizational Structure. The method for obtaining the desired information in these areas centered on the creation of a benchmark questionnaire. The questionnaire was used throughout each of the visits as the basis for information gathering. The results of this benchmark showed that all companies are moving in the direction of model-based engineering and manufacturing. There was evidence that many companies are trying to grasp how to manage current and legacy data. In terms of engineering design software tools, the companies contacted were using both 3-D solid modeling and surfaced Wire-frame models. The manufacturing computer tools were varie4 with most companies using more than one software product to generate machining data and none currently performing model-based manufacturing (MBM) ftom a common medel. The majority of companies were closer to identifying or using a single computer-aided design (CAD) system than a single computer-aided manufacturing (CAM) system. The Inteznet was a technology that all companies were considering to either transport information more easily throughout the corporation or as a conduit for business, as the small firm was doing Successfully. Because PrdEngineer is the de facto CAD standard fbr the NWC, the Benchmark Team targeted companies using Parametric Technology Corporation (PTC) software tools. Most of the companies used Pm'Engineer for design to some degree, but found the PTC CAM product, PdManufacture lacking as compared to alternate CAM solutions. All of the companies visited fOund the data exchange between CAD/CAM systems problematic. It was apparent that these companies were trying to consolidate their software tools to reduce translation but had not been able to do so because no single solution had all the needed capabilities. In regard to organizational slructure and human resoukes, two companies were found to be using product or program teams. These teams consisted of the technical staff capable of completing the entire task and were xmintained throughout the project. This same strategy was evident at another of the companies but with more mobility of members. For all eornpanies visited except the small ~ work structure breakdown and responsibility were essentially the same as Y-12's at this time. The functions of numerical control (NC), desi~ and process planning were separate and distinct. The team made numerous recommendations that are detailed in the report.

Domm, T.D.; Underwood, R.S.

1999-04-26T23:59:59.000Z

15

Revised Benchmark Problem for modeling of metal flow and metal ...  

Science Conference Proceedings (OSTI)

The literature is scarce when it comes to benchmark problems for MHD flow in a cell and those cases which are available often suffer from insufficient level of ...

16

Fuel Cell Systems Sensors Air Management Benchmarking Modeling  

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

Systems Systems F u e l P r o c e s s o r Sensors Air Management Benchmarking Modeling Patrick Davis Patrick Davis Targets and Status 50 kWe (net) Integrated Fuel Cell Power System 5000 2000 1000 Hours Durability 45 125 275 $/kW Cost (including H2 storage) 650 500 400 W/L Power density (w/o H2 stor) Operating on direct hydrogen 5000 2000 1000 Hours Durability 45 125 325 $/kW Cost 325 250 140 W/L Power density Operating on Tier 2 gasoline containing 30 ppm sulfur, average 2010 2005 2003 status Units Characteristics Projects Fuel Cell Power Systems Analysis ANL NREL TIAX Directed Technologies, Inc. TIAX TIAX * Fuel Cell Systems Analysis * Fuel Cell Vehicle Systems Analysis * Cost Analyses of Fuel Cell Stacks/ Systems * DFMA Cost Estimates of Fuel Cell/ Reformer Systems at Low, Medium, & High Production Rates * Assessment of Fuel Cell Auxiliary

17

Development of whole-building energy performance models as benchmarks for retrofit projects  

Science Conference Proceedings (OSTI)

This paper presents a systematic development process of whole-building energy models as performance benchmarks for retrofit projects. Statistical regression-based models and computational performance models are being used for retrofit projects in industry ...

Omer Tugrul Karaguzel; Khee Poh Lam

2011-12-01T23:59:59.000Z

18

Benchmark Models, Planes, Lines and Points for Future SUSY Searches at the LHC  

E-Print Network (OSTI)

We define benchmark models for SUSY searches at the LHC, including the CMSSM, NUHM, mGMSB, mAMSB, MM-AMSB and p19MSSM, as well as models with R-parity violation and the NMSSM. Within the parameter spaces of these models, we propose benchmark subspaces, including planes, lines and points along them. The planes may be useful for presenting results of the experimental searches in different SUSY scenarios, while the specific benchmark points may serve for more detailed detector performance tests and comparisons. We also describe algorithms for defining suitable benchmark points along the proposed lines in the parameter spaces, and we define a few benchmark points motivated by recent fits to existing experimental data.

S. S. AbdusSalam; B. C. Allanach; H. K. Dreiner; J. Ellis; U. Ellwanger; J. Gunion; S. Heinemeyer; M. Kraemer; M. L. Mangano; K. A. Olive; S. Rogerson; L. Roszkowski; M. Schlaffer; G. Weiglein

2011-09-18T23:59:59.000Z

19

Job benchmarks  

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

Benchmarks Job Benchmarks PDSF Benchmarks Select benchmark to view output of ATLAS Fragmentation Alice EMC Simulation Dayabay Analysis STAR pp500 reconstruction STAR AuAu200...

20

Studying performance of DEVS modeling and simulation environments using the DEVStone benchmark  

Science Conference Proceedings (OSTI)

The Discrete Event System Specification (DEVS) formal modeling and simulation (M&S) framework (which supports hierarchical and modular model composition) has been widely used to understand, analyze and develop a variety of systems. Numerous DEVS simulators ... Keywords: DEVS, modeling and simulation tools, simulator performance evaluation, synthetic benchmarks

Gabriel Wainer; Ezequiel Glinsky; Marcelo Gutierrez-Alcaraz

2011-07-01T23:59:59.000Z

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


21

Development of a HEX-Z Partially Homogenized Benchmark Model for the FFTF Isothermal Physics Measurements  

SciTech Connect

A series of isothermal physics measurements were performed as part of an acceptance testing program for the Fast Flux Test Facility (FFTF). A HEX-Z partially-homogenized benchmark model of the FFTF fully-loaded core configuration was developed for evaluation of these measurements. Evaluated measurements include the critical eigenvalue of the fully-loaded core, two neutron spectra, 32 reactivity effects measurements, an isothermal temperature coefficient, and low-energy gamma and electron spectra. Dominant uncertainties in the critical configuration include the placement of radial shielding around the core, reactor core assembly pitch, composition of the stainless steel components, plutonium content in the fuel pellets, and boron content in the absorber pellets. Calculations of criticality, reactivity effects measurements, and the isothermal temperature coefficient using MCNP5 and ENDF/B-VII.0 cross sections with the benchmark model are in good agreement with the benchmark experiment measurements. There is only some correlation between calculated and measured spectral measurements; homogenization of many of the core components may have impacted computational assessment of these measurements. This benchmark evaluation has been added to the IRPhEP Handbook.

John D. Bess

2012-05-01T23:59:59.000Z

22

Towards a benchmark for model checkers of asynchronous concurrent systems  

E-Print Network (OSTI)

? Model Checking is an established filed, ? With wealth of publications, ? and plenty of tools. ? But there are little empirical results, ? and lack of analytical techniques for evaluating tools...

Diyaa-addein Atiya; Néstor Catańo; Geral Lüttgen

2005-01-01T23:59:59.000Z

23

Benchmarks used  

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

Benchmarks used Benchmarks used Benchmarks used Using a set of benchmarks described below, different optimization options for the different compilers on Edison. The compilers are also compared against one another on the benchmarks. NERSC6 Benchmarks We used these benchmarks from the NERSC6 procurement: NERSC 6 PROCUREMENT MPI BENCHMARKS Benchmark Science Area Algorithm Concurrency Languages GTC Fusion PIC, finite difference 2048 f90 IMPACT-T Accelerator Physics PIC, FFT 1024 f90 MILC Materials Science Conjugate gradient, sparse matrix, FFT 1024 c, assembly NPB 3.3.1 MPI Parallel Benchmarks The following NPB 3.3 MPI Benchmarks were run, all at a concurrency of 1024 processes. They are all written in Fortran. NAS PARALLEL MPI BENCHMARKS - VERSION 3.3.1 Benchmark Full Name Description Level

24

Benchmarks used  

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

Benchmarks used Benchmarks used Benchmarks used Using a set of benchmarks described below, different optimization options for the different compilers on Edison. The compilers are also compared against one another on the benchmarks. NERSC6 Benchmarks We used these benchmarks from the NERSC6 procurement: NERSC 6 PROCUREMENT MPI BENCHMARKS Benchmark Science Area Algorithm Concurrency Languages GTC Fusion PIC, finite difference 2048 f90 IMPACT-T Accelerator Physics PIC, FFT 1024 f90 MILC Materials Science Conjugate gradient, sparse matrix, FFT 1024 c, assembly NPB 3.3.1 MPI Parallel Benchmarks The following NPB 3.3 MPI Benchmarks were run, all at a concurrency of 1024 processes. They are all written in Fortran. NAS PARALLEL MPI BENCHMARKS - VERSION 3.3.1 Benchmark Full Name Description Level

25

Benchmark hydrogeophysical data from a physical seismic model  

Science Conference Proceedings (OSTI)

Theoretical fluid flow models are used regularly to predict and analyze porous media flow but require verification against natural systems. Seismic monitoring in a controlled laboratory setting at a nominal scale of 1:1000 in the acoustic frequency range ... Keywords: Gassmann, Hertz-Mindlin, Saturation, Sensors, Soil

Juan M. Lorenzo; David E. Smolkin; Christopher White; Shannon R. Chollett; Ting Sun

2013-01-01T23:59:59.000Z

26

Fukushima Radiological Assessment Tool: Benchmarking Radiological Assessment and Dose Models using Fukushima Dataset  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) is developing the Fukushima Radiological Assessment Tool (FRAT), a comprehensive database and software application for accessing, analyzing, and interpreting data related to radiological releases from the Fukushima Daiichi Nuclear Power Plant (NPP). This report documents the development of the FRAT to support the benchmarking of emergency response and dose modeling codes used by nuclear power plants, using radiological data from the Fukushima ...

2013-07-31T23:59:59.000Z

27

Atlantic Meridional Overturning Circulation (AMOC) in CMIP5 Models: RCP and Historical Simulations  

Science Conference Proceedings (OSTI)

The Atlantic meridional overturning circulation (AMOC) simulated by 10 models from phase 5 of the Coupled Model Intercomparison Project (CMIP5) for the historical (1850–2005) and future climate is examined. The historical simulations of the AMOC ...

Wei Cheng; John C. H. Chiang; Dongxiao Zhang

2013-09-01T23:59:59.000Z

28

Historical and idealized climate model experiments: an intercomparison of Earth system models of intermediate complexity  

E-Print Network (OSTI)

Both historical and idealized climate model experiments are performed with a variety of Earth system models of intermediate complexity (EMICs) as part of a community contribution to the Intergovernmental Panel on Climate ...

Monier, Erwan

29

Atlantic Meridional Overturning Circulation (AMOC) in CMIP5 models: RCP and Historical Simulations  

Science Conference Proceedings (OSTI)

We examine the Atlantic Meridional Overturning Circulation (AMOC) simulated by ten CMIP5 models for the historical (1850-2005) and future climate. The historical simulations of the AMOC mean state are more closely matched to observations than ...

Wei Cheng; John C. H. Chiang; Dongxiao Zhang

30

Fast 2D non-LTE radiative modelling of prominences I. Numerical methods and benchmark results  

E-Print Network (OSTI)

New high-resolution spectropolarimetric observations of solar prominences require improved radiative modelling capabilities in order to take into account both multi-dimensional - at least 2D - geometry and complex atomic models. This makes necessary the use of very fast numerical schemes for the resolution of 2D non-LTE radiative transfer problems considering freestanding and illuminated slabs. The implementation of Gauss-Seidel and successive over-relaxation iterative schemes in 2D, together with a multi-grid algorithm, is thoroughly described in the frame of the short characteristics method for the computation of the formal solution of the radiative transfer equation in cartesian geometry. We propose a new test for multidimensional radiative transfer codes and we also provide original benchmark results for simple 2D multilevel atom cases which should be helpful for the further development of such radiative transfer codes, in general.

L. Leger; L. Chevallier; F. Paletou

2007-03-27T23:59:59.000Z

31

Model study of historical injection in the Southeast Geysers  

DOE Green Energy (OSTI)

A three component model study of the historical injection of two wells in the Unit 13 area demonstrates that the recovery of injection derived steam is influenced by the geologic structure of the bottom of the reservoir and the relative location of injection wells. the migration of injectate from the first injection well, located up structure from the second, quenched the area around the second injector before it started operation. while both wells had similar cumulative mass injected, nearly five times more injection derived steam is recovered from the first injector than the second. Sensitivity runs were made to three cases of increasing matrix capillary pressure. The recovery of injection derived steam increases with higher values of capillarity. The interaction of structure at the bottom of the reservoir, injection well locations, and matrix capillarity all influence the recovery efficiency of injectate as steam. The model developed in this study will be used to evaluate injection strategies at The Geysers.

Faulder, D.D.

1992-01-01T23:59:59.000Z

32

Model study of historical injection in the southeast Geysers  

DOE Green Energy (OSTI)

A three component model study of the historical injection of two wells in the Unit 13 area demonstrates that the recovery of injection derived steam is influenced by the geologic structure of the bottom of the reservoir and the relative location of injection wells. The migration of injectate from the first injection well, located up structure from the second, quenched the area around the second injector before it started operation. While both wells had similar cumulative mass injected, nearly five times more injection derived steam is recovered from the first injector than the-second. Sensitivity runs were made to three cases of increasing matrix capillary pressure. The recovery of injection derived steam increases with higher values of capillarity. The interaction of structure at the bottom of the reservoir, injection well locations, and matrix capillarity all influence the recovery efficiency of injected as steam. The model developed in this study will be used to evaluate injection strategies at The Geysers.

Faulder, D.D.

1992-08-01T23:59:59.000Z

33

Model study of historical injection in the southeast Geysers  

DOE Green Energy (OSTI)

A three component model study of the historical injection of two wells in the Unit 13 area demonstrates that the recovery of injection derived steam is influenced by the geologic structure of the bottom of the reservoir and the relative location of injection wells. The migration of injectate from the first injection well, located up structure from the second, quenched the area around the second injector before it started operation. While both wells had similar cumulative mass injected, nearly five times more injection derived steam is recovered from the first injector than the-second. Sensitivity runs were made to three cases of increasing matrix capillary pressure. The recovery of injection derived steam increases with higher values of capillarity. The interaction of structure at the bottom of the reservoir, injection well locations, and matrix capillarity all influence the recovery efficiency of injected as steam. The model developed in this study will be used to evaluate injection strategies at The Geysers.

Faulder, D.D.

1992-01-01T23:59:59.000Z

34

2D and 3D Numerical Modeling of Solidification Benchmark of Sn-3 ...  

Science Conference Proceedings (OSTI)

The benchmark experiment consists in solidifying a rectangular ingot of Sn-3% wt . Pb alloys, by using two lateral heat exchangers which allow extracting heat ...

35

Verification and validation benchmarks.  

SciTech Connect

Verification and validation (V&V) are the primary means to assess the accuracy and reliability of computational simulations. V&V methods and procedures have fundamentally improved the credibility of simulations in several high-consequence fields, such as nuclear reactor safety, underground nuclear waste storage, and nuclear weapon safety. Although the terminology is not uniform across engineering disciplines, code verification deals with assessing the reliability of the software coding, and solution verification deals with assessing the numerical accuracy of the solution to a computational model. Validation addresses the physics modeling accuracy of a computational simulation by comparing the computational results with experimental data. Code verification benchmarks and validation benchmarks have been constructed for a number of years in every field of computational simulation. However, no comprehensive guidelines have been proposed for the construction and use of V&V benchmarks. For example, the field of nuclear reactor safety has not focused on code verification benchmarks, but it has placed great emphasis on developing validation benchmarks. Many of these validation benchmarks are closely related to the operations of actual reactors at near-safety-critical conditions, as opposed to being more fundamental-physics benchmarks. This paper presents recommendations for the effective design and use of code verification benchmarks based on manufactured solutions, classical analytical solutions, and highly accurate numerical solutions. In addition, this paper presents recommendations for the design and use of validation benchmarks, highlighting the careful design of building-block experiments, the estimation of experimental measurement uncertainty for both inputs and outputs to the code, validation metrics, and the role of model calibration in validation. It is argued that the understanding of predictive capability of a computational model is built on the level of achievement in V&V activities, how closely related the V&V benchmarks are to the actual application of interest, and the quantification of uncertainties related to the application of interest.

Oberkampf, William Louis; Trucano, Timothy Guy

2007-02-01T23:59:59.000Z

36

Physical Model Development and Benchmarking for MHD Flows in Blanket Design  

SciTech Connect

An advanced simulation environment to model incompressible MHD flows relevant to blanket conditions in fusion reactors has been developed at HyPerComp in research collaboration with TEXCEL. The goals of this phase-II project are two-fold: The first is the incorporation of crucial physical phenomena such as induced magnetic field modeling, and extending the capabilities beyond fluid flow prediction to model heat transfer with natural convection and mass transfer including tritium transport and permeation. The second is the design of a sequence of benchmark tests to establish code competence for several classes of physical phenomena in isolation as well as in select (termed here as “canonical”,) combinations. No previous attempts to develop such a comprehensive MHD modeling capability exist in the literature, and this study represents essentially uncharted territory. During the course of this Phase-II project, a significant breakthrough was achieved in modeling liquid metal flows at high Hartmann numbers. We developed a unique mathematical technique to accurately compute the fluid flow in complex geometries at extremely high Hartmann numbers (10,000 and greater), thus extending the state of the art of liquid metal MHD modeling relevant to fusion reactors at the present time. These developments have been published in noted international journals. A sequence of theoretical and experimental results was used to verify and validate the results obtained. The code was applied to a complete DCLL module simulation study with promising results.

Ramakanth Munipalli; P.-Y.Huang; C.Chandler; C.Rowell; M.-J.Ni; N.Morley; S.Smolentsev; M.Abdou

2008-06-05T23:59:59.000Z

37

Benchmarks used  

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

described below, different optimization options for the different compilers on Edison. The compilers are also compared against one another on the benchmarks. NERSC6...

38

Benchmark Monitoring: Retired Systems  

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

Completed Batch Jobs Completed Parallel Jobs Usage Reports Hopper Benchmark Monitoring Edison Benchmark Monitoring Carver Benchmark Monitoring Benchmark Monitoring: Retired Systems...

39

Evaluating Benchmark . . .  

E-Print Network (OSTI)

To reduce the simulation time to a tractable amount or due to compilation (or other related) problems, computer architects often simulate only a subset of the benchmarks in a benchmark suite. However, if the architect chooses a subset of benchmarks that is not representative, the subsequent simulation results will, at best, be misleading or, at worst, yield incorrect conclusions. To address this problem, computer architects have recently proposed several statistically-based approaches to subset a benchmark suite. While some of these approaches are well-grounded statistically, what has not yet been thoroughly evaluated is the: 1) Absolute accuracy, 2) Relative accuracy across a range of processor and memory subsystem enhancements, and 3) Representativeness and coverage of each approach for a range of subset sizes. Specifically, this paper evaluates statistically-based subsetting approaches based on principal components analysis (PCA) and the Plackett and Burman (P&B) design, in addition to prevailing approaches such as integer vs. floating-point, core vs. memory-bound, by language, and at random. Our results show that the two statistically-based approaches, PCA and P&B, have the best absolute and relative accuracy for CPI and energy-delay product (EDP), produce subsets that are the most representative, and choose benchmark and input set pairs that are most well-distributed across the benchmark space. To achieve a 5 % absolute CPI and EDP error, across a wide range of configurations, PCA and P&B typically need about 17 benchmark and input set pairs, while the other five approaches often choose more than 30 benchmark and input set pairs.

Joshua J. Yi; Resit Sendag; Lieven Eeckhout; Ajay Joshi; David J. Lilja; Lizy K. John

2006-01-01T23:59:59.000Z

40

Historical analysis of legal opinions with a sparse mixed-effects latent variable model  

Science Conference Proceedings (OSTI)

We propose a latent variable model to enhance historical analysis of large corpora. This work extends prior work in topic modelling by incorporating metadata, and the interactions between the components in metadata, in a general way. To test this, we ...

William Yang Wang; Elijah Mayfield; Suresh Naidu; Jeremiah Dittmar

2012-07-01T23:59:59.000Z

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


41

Regression benchmarking with simple middleware benchmarks  

E-Print Network (OSTI)

The paper introduces the concept of regression benchmarking as a variant of regression testing focused at detecting performance regressions. Applying the regression benchmarking in the area of middleware development, the paper explains how regression benchmarking differs from middleware benchmarking in general. On a real-world example of TAO, the paper shows why the existing benchmarks do not give results sufficient for regression benchmarking, and proposes techniques for detecting performance regressions using simple benchmarks. 1.

Lubomír Bulej; Tomáš Kalibera; Petr T?ma

2004-01-01T23:59:59.000Z

42

Generative Historical Model of City Size Hierarchies: 430 BCE –  

E-Print Network (OSTI)

Despite the enormous changes in city size and differentiation of functions over time and space, and discontinuities in growth processes, key spatio-temporal and distributional processes shaping city sizes are often assumed to remain invariant. We demonstrate in this article that most of the facile assumptions about such invariance, that is, constancy over long historical periods, are unsupported when comparisons are made concerning

Douglas R. White; Constantino Tsallis; Céline Rozenblat December

2005-01-01T23:59:59.000Z

43

The NAS Parallel Benchmarks  

E-Print Network (OSTI)

Weeratunga, “The NAS Parallel Benchmarks,” Intl. Journal ofD. Simon, “NAS Par- allel Benchmark Results,” Proceedings ofD. Simon, “NAS Par- allel Benchmark Results,” IEEE Parallel

Bailey, David H.

2010-01-01T23:59:59.000Z

44

NERSC-6 Benchmarks  

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

Benchmarks NERSC-6 Benchmarks The NERSC-6 application benchmarks were used in the acquisition process that resulted in the NERSC Cray XE6 ("Hopper") system. A technical report...

45

Edison Benchmark Monitoring  

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

Edison Benchmark Monitoring Benchmark Results Select Benchmark CAM GAMESS GTC IMPACT-T MAESTRO MILC PARATEC Submit Last edited: 2013-06-25 22:45:11...

46

Vehicle Technologies Office: Benchmarking  

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

Benchmarking Benchmarking Research funded by the Vehicle Technologies Office produces a great deal of valuable data, but it is important to compare those research results with similar work done elsewhere in the world. Through laboratory testing, researchers can compare vehicles and components to validate models, support technical target-setting, and provide data to help guide technology development tasks. Benchmarking activities fall into two primary areas: Vehicle and component testing, in which researchers test and analyze emerging technologies obtained from sources throughout the world. The results are used to continually assess program efforts. Model validation, in which researchers use test data to validate the accuracy of vehicle and component computer models including: overall measures such as fuel economy, state-of-charge energy storage across the driving cycle, and transient component behavior, such as fuel rate and torque.

47

Comparison and validation of HEU and LEU modeling results to HEU experimental benchmark data for the Massachusetts Institute of Technology MITR reactor.  

Science Conference Proceedings (OSTI)

The Massachusetts Institute of Technology Reactor (MITR-II) is a research reactor in Cambridge, Massachusetts designed primarily for experiments using neutron beam and in-core irradiation facilities. It delivers a neutron flux comparable to current LWR power reactors in a compact 6 MW core using Highly Enriched Uranium (HEU) fuel. In the framework of its non-proliferation policies, the international community presently aims to minimize the amount of nuclear material available that could be used for nuclear weapons. In this geopolitical context, most research and test reactors both domestic and international have started a program of conversion to the use of Low Enriched Uranium (LEU) fuel. A new type of LEU fuel based on an alloy of uranium and molybdenum (UMo) is expected to allow the conversion of U.S. domestic high performance reactors like the MITR-II reactor. Towards this goal, comparisons of MCNP5 Monte Carlo neutronic modeling results for HEU and LEU cores have been performed. Validation of the model has been based upon comparison to HEU experimental benchmark data for the MITR-II. The objective of this work was to demonstrate a model which could represent the experimental HEU data, and therefore could provide a basis to demonstrate LEU core performance. This report presents an overview of MITR-II model geometry and material definitions which have been verified, and updated as required during the course of validation to represent the specifications of the MITR-II reactor. Results of calculations are presented for comparisons to historical HEU start-up data from 1975-1976, and to other experimental benchmark data available for the MITR-II Reactor through 2009. This report also presents results of steady state neutronic analysis of an all-fresh LEU fueled core. Where possible, HEU and LEU calculations were performed for conditions equivalent to HEU experiments, which serves as a starting point for safety analyses for conversion of MITR-II from the use of HEU fuel to the use of UMo LEU fuel.

Newton, T. H.; Wilson, E. H; Bergeron, A.; Horelik, N.; Stevens, J. (Nuclear Engineering Division); (MIT Nuclear Reactor Lab.)

2011-03-02T23:59:59.000Z

48

Benchmark studies of the Bending Corrected Rotating Linear Model (BCRLM) reactive scattering code: Implications for accurate quantum calculations  

SciTech Connect

The Bending Corrected Rotating Linear Model (BCRLM), developed by Hayes and Walker, is a simple approximation to the true multidimensional scattering problem for reaction of the type: A + BC {yields} AB + C. While the BCRLM method is simpler than methods designed to obtain accurate three dimensional quantum scattering results, this turns out to be a major advantage in terms of our benchmarking studies. The computer code used to obtain BCRLM scattering results is written for the most part in standard FORTRAN and has been reported to several scalar, vector, and parallel architecture computers including the IBM 3090-600J, the Cray XMP and YMP, the Ardent Titan, IBM RISC System/6000, Convex C-1 and the MIPS 2000. Benchmark results will be reported for each of these machines with an emphasis on comparing the scalar, vector, and parallel performance for the standard code with minimum modifications. Detailed analysis of the mapping of the BCRLM approach onto both shared and distributed memory parallel architecture machines indicates the importance of introducing several key changes in the basic strategy and algorithums used to calculate scattering results. This analysis of the BCRLM approach provides some insights into optimal strategies for mapping three dimensional quantum scattering methods, such as the Parker-Pack method, onto shared or distributed memory parallel computers.

Hayes, E.F.; Darakjian, Z. (Rice Univ., Houston, TX (USA). Dept. of Chemistry); Walker, R.B. (Los Alamos National Lab., NM (USA))

1990-01-01T23:59:59.000Z

49

Computational evaluation of two reactor benchmark problems  

E-Print Network (OSTI)

A neutronic evaluation of two reactor benchmark problems was performed. The benchmark problems describe typical PWR uranium and plutonium (mixed oxide) fueled lattices. WIMSd4m, a neutron transport lattice code, was used to evaluate multigroup macroscopic cross sections for various pincell models in each benchmark problem. DEF3D, a multigroup multidimensional diffusion code, was used to evaluate the uranium-fueled lattice benchmark problem of the American Nuclear Society. TWODANT, a multigroup, two-dimensional transport code, was used to evaluate the mixed oxide lattice benchmark problem from the Nuclear Energy Agency. Both benchmark problems yielded results consistent with preliminary results submitted by other participants in the benchmarking exercises. Some suggestions are made to improve future benchmark evaluations.

Cowan, James Anthony

1998-01-01T23:59:59.000Z

50

Benchmark Modeling of the Near-Field and Far-Field Wave Effects of Wave Energy Arrays  

SciTech Connect

This project is an industry-led partnership between Columbia Power Technologies and Oregon State University that will perform benchmark laboratory experiments and numerical modeling of the near-field and far-field impacts of wave scattering from an array of wave energy devices. These benchmark experimental observations will help to fill a gaping hole in our present knowledge of the near-field effects of multiple, floating wave energy converters and are a critical requirement for estimating the potential far-field environmental effects of wave energy arrays. The experiments will be performed at the Hinsdale Wave Research Laboratory (Oregon State University) and will utilize an array of newly developed BuoysĂ?Â?Ă?Â?Ă?Â?Ă?Âť that are realistic, lab-scale floating power converters. The array of Buoys will be subjected to realistic, directional wave forcing (1:33 scale) that will approximate the expected conditions (waves and water depths) to be found off the Central Oregon Coast. Experimental observations will include comprehensive in-situ wave and current measurements as well as a suite of novel optical measurements. These new optical capabilities will include imaging of the 3D wave scattering using a binocular stereo camera system, as well as 3D device motion tracking using a newly acquired LED system. These observing systems will capture the 3D motion history of individual Buoys as well as resolve the 3D scattered wave field; thus resolving the constructive and destructive wave interference patterns produced by the array at high resolution. These data combined with the device motion tracking will provide necessary information for array design in order to balance array performance with the mitigation of far-field impacts. As a benchmark data set, these data will be an important resource for testing of models for wave/buoy interactions, buoy performance, and far-field effects on wave and current patterns due to the presence of arrays. Under the proposed project we will initiate high-resolution (fine scale, very near-field) fluid/structure interaction simulations of buoy motions, as well as array-scale, phase-resolving wave scattering simulations. These modeling efforts will utilize state-of-the-art research quality models, which have not yet been brought to bear on this complex problem of large array wave/structure interaction problem.

Rhinefrank, Kenneth E.; Haller, Merrick C.; Ozkan-Haller, H. Tuba

2013-01-26T23:59:59.000Z

51

I/O Benchmarks  

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

Benchmarks IO Benchmarks Transfer rates measured 4 times per day for the past week on all of the eliza file systems are shown below. For more details see IO Benchmarking Details....

52

NERSC-8 / Trinity Benchmarks  

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

Benchmarks NERSC-8 Trinity Benchmarks These benchmark programs are for use as part of the joint NERSC ACES NERSC-8Trinity system procurement. There are two basic kinds of...

53

Including the Human Factor in Dependability Benchmarks  

E-Print Network (OSTI)

We describe the construction of a dependability benchmark that captures the impact of the human system operator on the tested system. Our benchmark follows the usual model of injecting faults and perturbations into the tested system; however, our perturbations are generated by the unscripted actions of actual human operators participating in the benchmark procedure in addition to more traditional fault injection. We introduce the issues that arise as we attempt to incorporate human behavior into a dependability benchmark and describe the possible solutions that we have arrived at through preliminary experimentation. Finally, we describe the implementation of our techniques in a dependability benchmark that we are currently developing

Aaron B. Brown; Leonard C. Chung; David A. Patterson

2002-01-01T23:59:59.000Z

54

Historical Note/ David Deming, History Editor Ceramic Models of Wells in the Han Dynasty  

E-Print Network (OSTI)

Historical Note/ David Deming, History Editor Ceramic Models of Wells in the Han Dynasty (206 BC, granaries, grain mills, stoves, and wells. Among all the materials, pottery was the most popular medium of everyday life in the Han Dynasty. The well mingqi, among many other mingqi, have been described

Jiao, Jiu Jimmy

55

A Historical Perspective and Business Model for Load Response Aggregation Based on Priority Service  

E-Print Network (OSTI)

A Historical Perspective and Business Model for Load Response Aggregation Based on Priority Service] limits consumption during peak demand periods and is set by the customer according to a rate agreements of a colored light indicator which tariff is active. In its June 17, 1985 issue Electric Utility Week published

Oren, Shmuel S.

56

Benchmarks for GADRAS performance validation.  

SciTech Connect

The performance of the Gamma Detector Response and Analysis Software (GADRAS) was validated by comparing GADRAS model results to experimental measurements for a series of benchmark sources. Sources for the benchmark include a plutonium metal sphere, bare and shielded in polyethylene, plutonium oxide in cans, a highly enriched uranium sphere, bare and shielded in polyethylene, a depleted uranium shell and spheres, and a natural uranium sphere. The benchmark experimental data were previously acquired and consist of careful collection of background and calibration source spectra along with the source spectra. The calibration data were fit with GADRAS to determine response functions for the detector in each experiment. A one-dimensional model (pie chart) was constructed for each source based on the dimensions of the benchmark source. The GADRAS code made a forward calculation from each model to predict the radiation spectrum for the detector used in the benchmark experiment. The comparisons between the GADRAS calculation and the experimental measurements are excellent, validating that GADRAS can correctly predict the radiation spectra for these well-defined benchmark sources.

Mattingly, John K.; Mitchell, Dean James; Rhykerd, Charles L., Jr.

2009-09-01T23:59:59.000Z

57

Benchmarking data warehouses  

Science Conference Proceedings (OSTI)

Database benchmarks can either help users in comparing the performances of different systems, or help engineers in testing the effect of various design choices. In the field of data warehouses, the Transaction Processing Performance Council's standard ... Keywords: DWEB, OLAP, benchmarking, data mining, data warehouse design, data warehouse engineering benchmarks, data warehouses, database benchmarks, online analytical processing, optimisation techniques, performance evaluation

Jerome Darmont; Fadila Bentayeb; Omar Boussaid

2007-03-01T23:59:59.000Z

58

Benchmarking a Visual-Basic based multi-component one-dimensional reactive transport modeling tool  

Science Conference Proceedings (OSTI)

We present the details of a comprehensive numerical modeling tool, RT1D, which can be used for simulating biochemical and geochemical reactive transport problems. The code can be run within the standard Microsoft EXCEL Visual Basic platform, and it does ... Keywords: Bioremediation, Geochemical transport, Groundwater models, Numerical model, Reactive transport

Jagadish Torlapati; T. Prabhakar Clement

2013-01-01T23:59:59.000Z

59

Multiple-code benchmark simulation study of coupled THMC processes in the excavation disturbed zone associated with geological nuclear waste repositories  

E-Print Network (OSTI)

MULTIPLE-CODE BENCHMARK SIMULATION STUDY OF COUPLED THMCinternational, multiple-code benchmark test (BMT) study isinternational, multiple-model benchmark test (BMT) study of

2006-01-01T23:59:59.000Z

60

Lattice Wess-Zumino model with Ginsparg-Wilson fermions: One-loop results and GPU benchmarks  

E-Print Network (OSTI)

We numerically evaluate the one-loop counterterms for the four-dimensional Wess-Zumino model formulated on the lattice using Ginsparg-Wilson fermions of the overlap (Neuberger) variety, together with an auxiliary fermion (plus superpartners), such that a lattice version of $U(1)_R$ symmetry is exactly preserved in the limit of vanishing bare mass. We confirm previous findings by other authors that at one loop there is no renormalization of the superpotential in the lattice theory, but that there is a mismatch in the wavefunction renormalization of the auxiliary field. We study the range of the Dirac operator that results when the auxiliary fermion is integrated out, and show that localization does occur, but that it is less pronounced than the exponential localization of the overlap operator. We also present preliminary simulation results for this model, and outline a strategy for nonperturbative improvement of the lattice supercurrent through measurements of supersymmetry Ward identities. Related to this, some benchmarks for our graphics processing unit code are provided. Our simulation results find a nearly vanishing vacuum expectation value for the auxiliary field, consistent with approximate supersymmetry at weak coupling.

Chen Chen; Eric Dzienkowski; Joel Giedt

2010-05-18T23:59:59.000Z

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


61

Lattice Wess-Zumino model with Ginsparg-Wilson fermions: One-loop results and GPU benchmarks  

Science Conference Proceedings (OSTI)

We numerically evaluate the one-loop counterterms for the four-dimensional Wess-Zumino model formulated on the lattice using Ginsparg-Wilson fermions of the overlap (Neuberger) variety, together with an auxiliary fermion (plus superpartners), such that a lattice version of U(1){sub R} symmetry is exactly preserved in the limit of vanishing bare mass. We confirm previous findings by other authors that at one loop there is no renormalization of the superpotential in the lattice theory, but that there is a mismatch in the wave-function renormalization of the auxiliary field. We study the range of the Dirac operator that results when the auxiliary fermion is integrated out, and show that localization does occur, but that it is less pronounced than the exponential localization of the overlap operator. We also present preliminary simulation results for this model, and outline a strategy for nonperturbative improvement of the lattice supercurrent through measurements of supersymmetry Ward identities. Related to this, some benchmarks for our graphics processing unit code are provided. Our simulation results find a nearly vanishing vacuum expectation value for the auxiliary field, consistent with approximate supersymmetry at weak coupling.

Chen Chen; Dzienkowski, Eric; Giedt, Joel [Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy New York 12065 (United States)

2010-10-15T23:59:59.000Z

62

Benchmark calculation of no-core Monte Carlo shell model in light nuclei  

E-Print Network (OSTI)

The Monte Carlo shell model is firstly applied to the calculation of the no-core shell model in light nuclei. The results are compared with those of the full configuration interaction. The agreements between them are within a few % at most.

T. Abe; P. Maris; T. Otsuka; N. Shimizu; Y. Utsuno; J. P. Vary

2011-07-09T23:59:59.000Z

63

Benchmark calculation of no-core Monte Carlo shell model in light nuclei  

E-Print Network (OSTI)

The Monte Carlo shell model is firstly applied to the calculation of the no-core shell model in light nuclei. The results are compared with those of the full configuration interaction. The agreements between them are within a few % at most.

Abe, T; Otsuka, T; Shimizu, N; Utsuno, Y; Vary, J P; 10.1063/1.3584062

2011-01-01T23:59:59.000Z

64

Benchmark calculation of no-core Monte Carlo shell model in light nuclei  

SciTech Connect

The Monte Carlo shell model is firstly applied to the calculation of the no-core shell model in light nuclei. The results are compared with those of the full configuration interaction. The agreements between them are within a few % at most.

Abe, T.; Shimizu, N. [Department of Physics, the University of Tokyo, Hongo, Tokyo 113-0033 (Japan); Maris, P.; Vary, J. P. [Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States); Otsuka, T. [Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033 (Japan); CNS, University of Tokyo, Hongo, Tokyo 113-0033 (Japan); NSCL, Michigan State University, East Lansing, Michigan 48824 (United States); Utsuno, Y. [ASRC, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)

2011-05-06T23:59:59.000Z

65

Self-benchmarking Guide for Cleanrooms: Metrics, Benchmarks,...  

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

Cleanrooms: Metrics, Benchmarks, Actions Title Self-benchmarking Guide for Cleanrooms: Metrics, Benchmarks, Actions Publication Type Report LBNL Report Number LBNL-3392E Year of...

66

Self-benchmarking Guide for Laboratory Buildings: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

data items. Figure 9. Benchmarks for total system pressuredrop. The benchmarks in figure are basedcomponent pressure drop benchmarks shown in figure below, as

Mathew, Paul

2010-01-01T23:59:59.000Z

67

Self-benchmarking Guide for Cleanrooms: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

for Cleanrooms: Metrics, Benchmarks, Actions Paul Mathew,efficiency metrics and benchmarks that can be used to trackalso use the metrics and benchmarks described in this guide

Mathew, Paul

2010-01-01T23:59:59.000Z

68

Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

for Data Centers: Metrics, Benchmarks, Actions Paul Mathew,efficiency metrics and benchmarks that can be used to trackalso use the metrics and benchmarks described in this guide

Mathew, Paul

2010-01-01T23:59:59.000Z

69

Self-benchmarking Guide for Data Centers: Metrics, Benchmarks...  

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

Data Centers: Metrics, Benchmarks, Actions Title Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions Publication Type Report LBNL Report Number LBNL-3393E Year...

70

Self-benchmarking Guide for Laboratory Buildings: Metrics, Benchmarks...  

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

Laboratory Buildings: Metrics, Benchmarks, Actions Title Self-benchmarking Guide for Laboratory Buildings: Metrics, Benchmarks, Actions Publication Type Report LBNL Report Number...

71

BENCHMARKING EXERCISES TO VALIDATE THE UPDATED ELLWF GOLDSIM SLIT TRENCH MODEL  

Science Conference Proceedings (OSTI)

The Savannah River National Laboratory (SRNL) results of the 2008 Performance Assessment (PA) (WSRC, 2008) sensitivity/uncertainty analyses conducted for the trenches located in the EArea LowLevel Waste Facility (ELLWF) were subject to review by the United States Department of Energy (U.S. DOE) Low-Level Waste Disposal Facility Federal Review Group (LFRG) (LFRG, 2008). LFRG comments were generally approving of the use of probabilistic modeling in GoldSim to support the quantitative sensitivity analysis. A recommendation was made, however, that the probabilistic models be revised and updated to bolster their defensibility. SRS committed to addressing those comments and, in response, contracted with Neptune and Company to rewrite the three GoldSim models. The initial portion of this work, development of Slit Trench (ST), Engineered Trench (ET) and Components-in-Grout (CIG) trench GoldSim models, has been completed. The work described in this report utilizes these revised models to test and evaluate the results against the 2008 PORFLOW model results. This was accomplished by first performing a rigorous code-to-code comparison of the PORFLOW and GoldSim codes and then performing a deterministic comparison of the two-dimensional (2D) unsaturated zone and three-dimensional (3D) saturated zone PORFLOW Slit Trench models against results from the one-dimensional (1D) GoldSim Slit Trench model. The results of the code-to-code comparison indicate that when the mechanisms of radioactive decay, partitioning of contaminants between solid and fluid, implementation of specific boundary conditions and the imposition of solubility controls were all tested using identical flow fields, that GoldSim and PORFLOW produce nearly identical results. It is also noted that GoldSim has an advantage over PORFLOW in that it simulates all radionuclides simultaneously ? thus avoiding a potential problem as demonstrated in the Case Study (see Section 2.6). Hence, it was concluded that the follow-on work using GoldSim to develop 1D equivalent models of the PORFLOW multi-dimensional models was justified. The comparison of GoldSim 1D equivalent models to PORFLOW multi-dimensional models was made at two locations in the model domains ? at the unsaturated-saturated zone interface and at the 100m point of compliance. PORFLOW model results from the 2008 PA were utilized to investigate the comparison. By making iterative adjustments to certain water flux terms in the GoldSim models it was possible to produce contaminant mass fluxes and water concentrations that were highly similar to the PORFLOW model results at the two locations where comparisons were made. Based on the ability of the GoldSim 1D trench models to produce mass flux and concentration curves that are sufficiently similar to multi-dimensional PORFLOW models for all of the evaluated radionuclides and their progeny, it is concluded that the use of the GoldSim 1D equivalent Slit and Engineered trenches models for further probabilistic sensitivity and uncertainty analysis of ELLWF trench units is justified. A revision to the original report was undertaken to correct mislabeling on the y-axes of the compliance point concentration graphs, to modify the terminology used to define the ?blended? source term Case for the saturated zone to make it consistent with terminology used in the 2008 PA, and to make a more definitive statement regarding the justification of the use of the GoldSim 1D equivalent trench models for follow-on probabilistic sensitivity and uncertainty analysis.

Taylor, G.; Hiergesell, R.

2013-11-12T23:59:59.000Z

72

Benchmarking GEANT4 nuclear models for carbon-therapy at 95 MeV/A  

E-Print Network (OSTI)

In carbon-therapy, the interaction of the incoming beam with human tissues may lead to the production of a large amount of nuclear fragments and secondary light particles. An accurate estimation of the biological dose deposited into the tumor and the surrounding healthy tissues thus requires sophisticated simulation tools based on nuclear reaction models. The validity of such models requires intensive comparisons with as many sets of experimental data as possible. Up to now, a rather limited set of double di erential carbon fragmentation cross sections have been measured in the energy range used in hadrontherapy (up to 400 MeV/A). However, new data have been recently obtained at intermediate energy (95 MeV/A). The aim of this work is to compare the reaction models embedded in the GEANT4 Monte Carlo toolkit with these new data. The strengths and weaknesses of each tested model, i.e. G4BinaryLightIonReaction, G4QMDReaction and INCL++, coupled to two di fferent de-excitation models, i.e. the generalized evaporation model and the Fermi break-up are discussed.

J. Dudouet; D. Cussol; D. Durand; M. Labalme

2013-09-06T23:59:59.000Z

73

Modeling PCM-Enhanced Insulation System and Benchmarking EnergyPlus against Controlled Field Data  

Science Conference Proceedings (OSTI)

Phase-change materials (PCM) used in building envelopes appear to be a promising technology to reduce energy consumption and reduce/shift peak load. However, due to complexity in modeling the dynamic behavior of PCMs, current modeling tools either lack an accurate way of predicting the performance and impact of PCMs in buildings or validation of predicted or measured performance is not available. This paper presents a model of a PCM-enhanced dynamic-insulation system in EnergyPlus (E+) and compares the simulation results against field-measured data. Laboratory tests to evaluate thermal properties and to characterize the PCM and PCM-enhanced cellulose insulation system are also presented in this paper. Results indicate that the predicted daily average heat flux through walls from the E+ simulation was within 9% of field measured data. Future analysis will allow us to predict annual energy savings from the use of PCM in buildings.

Shrestha, Som S [ORNL; Miller, William A [ORNL; Stovall, Therese K [ORNL; Desjarlais, Andre Omer [ORNL; Childs, Kenneth W [ORNL; Porter, Wallace D [ORNL; Bhandari, Mahabir S [ORNL; Coley, Steven J [ORNL

2011-01-01T23:59:59.000Z

74

Concrete Model Descriptions and Summary of Benchmark Studies for Blast Effects Simulations  

DOE Green Energy (OSTI)

Concrete is perhaps one of the most widely used construction materials in the world. Engineers use it to build massive concrete dams, concrete waterways, highways, bridges, and even nuclear reactors. The advantages of using concrete is that it can be cast into any desired shape, it is durable, and very economical compared to structural steel. The disadvantages are its low tensile strength, low ductility, and low strength-to-weight ratio. Concrete is a composite material that consists of a coarse granular material, or aggregate, embedded in a hard matrix of material, or cement, which fills the gaps between the aggregates and binds them together. Concrete properties, however, vary widely. The properties depend on the choice of materials used and the proportions for a particular application, as well as differences in fabrication techniques. Table 1 provides a listing of typical engineering properties for structural concrete. Properties also depend on the level of concrete confinement, or hydrostatic pressure, the material is being subjected to. In general, concrete is rarely subjected to a single axial stress. The material may experience a combination of stresses all acting simultaneously. The behavior of concrete under these combined stresses are, however, extremely difficult to characterize. In addition to the type of loading, one must also consider the stress history of the material. Failure is determined not only by the ultimate stresses, but also by the rate of loading and the order in which these stresses were applied. The concrete model described herein accounts for this complex behavior of concrete. It was developed by Javier Malvar, Jim Wesevich, and John Crawford of Karagozian and Case, and Don Simon of Logicon RDA in support of the Defense Threat Reduction Agency's programs. The model is an enhanced version of the Concrete/Geological Material Model 16 in the Lagrangian finite element code DYNA3D. The modifications that were made to the original model ensured that the material response followed experimental observations for standard uniaxial, biaxial, and triaxial tests for both tension and compression type loading. A disadvantage of using this material model, however, is the overwhelming amount of input that is required from the user. Therefore, the goal of this report is to provide future users with the tools necessary for successfully using this model.

Noble, C; Kokko, E; Darnell, I; Dunn, T; Hagler, L; Leininger, L

2005-07-21T23:59:59.000Z

75

Technical Basis and Benchmarking of the Crud Deposition Risk Assessment Model (CORAL)  

Science Conference Proceedings (OSTI)

Deposition of boiling water reactor (BWR) system corrosion products (crud) on operating fuel rods has resulted in performance-limiting conditions in a number of plants. To facilitate improved management of any crud-related fuel performance risk, EPRI has developed the Crud DepOsition Risk Assessment ModeL (CORAL). CORAL incorporates a modified version of the Versatile Internals and Component Program for Reactors ...

2012-08-27T23:59:59.000Z

76

Hospital Energy Benchmarking Guidance  

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

of metrics, a high-level protocol is provided. The next section presents draft benchmarks for some metrics; benchmarks are not available for many metrics owing to a lack of...

77

Factory Flow Benchmarking Report  

E-Print Network (OSTI)

LAI benchmarked representative part fabrications and some assembly operations within its member companies of the defense aircraft industry. This paper reports the results of this benchmarking effort. In addition, this ...

Shields, Thomas J.

78

Properties of potential modelling three benchmarks: the cosmological constant, inflation and three generations  

E-Print Network (OSTI)

We argue for a model of low-energy correction to the inflationary potential as caused by the gauge-mediated breaking down the supersymmetry at the scale of $\\mu_\\textsc{x}\\sim 10^4$ GeV, that provides us with the seesaw mechanism of thin domain wall fluctuations in the flat vacuum. The fluctuations are responsible for the vacuum with the cosmological constant at the scale of $\\mu_\\Lambda\\sim 10^{-2}$ eV suppressed by the Planckian mass $m_\\mathtt{Pl}$ via $\\mu_\\Lambda\\sim\\mu_\\textsc{x}^2/m_\\mathtt{Pl}$. The appropriate vacuum state is occupied after the inflation with quartic coupling constant $\\lambda\\sim\\mu_\\textsc{x}/m_\\mathtt{Pl}\\sim 10^{-14}$ inherently related with the bare mass scale of $\\widetilde m\\sim\\sqrt{\\mu_\\textsc{x}m_\\mathtt{Pl}}\\sim 10^{12}$ GeV determining the thickness of domain walls $\\delta r\\sim1/\\widetilde m$. Such the parameters of potential are still marginally consistent with the observed inhomogeneity of matter density in the Universe. The inflationary evolution suggests the vacuum structure compatible with three fermionic generations of matter as well as with observed hierarchies of masses and mixing in the Standard Model.

V. V. Kiselev; S. A. Timofeev

2010-04-23T23:59:59.000Z

79

NERSC Benchmarking and Workload Characterization  

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

Petascale Initiative Science Gateway Development Storage and IO Technologies Testbeds Home R & D Benchmarking & Workload Characterization Benchmarking & Workload...

80

Radiation Detection Computational Benchmark Scenarios  

SciTech Connect

Modeling forms an important component of radiation detection development, allowing for testing of new detector designs, evaluation of existing equipment against a wide variety of potential threat sources, and assessing operation performance of radiation detection systems. This can, however, result in large and complex scenarios which are time consuming to model. A variety of approaches to radiation transport modeling exist with complementary strengths and weaknesses for different problems. This variety of approaches, and the development of promising new tools (such as ORNL’s ADVANTG) which combine benefits of multiple approaches, illustrates the need for a means of evaluating or comparing different techniques for radiation detection problems. This report presents a set of 9 benchmark problems for comparing different types of radiation transport calculations, identifying appropriate tools for classes of problems, and testing and guiding the development of new methods. The benchmarks were drawn primarily from existing or previous calculations with a preference for scenarios which include experimental data, or otherwise have results with a high level of confidence, are non-sensitive, and represent problem sets of interest to NA-22. From a technical perspective, the benchmarks were chosen to span a range of difficulty and to include gamma transport, neutron transport, or both and represent different important physical processes and a range of sensitivity to angular or energy fidelity. Following benchmark identification, existing information about geometry, measurements, and previous calculations were assembled. Monte Carlo results (MCNP decks) were reviewed or created and re-run in order to attain accurate computational times and to verify agreement with experimental data, when present. Benchmark information was then conveyed to ORNL in order to guide testing and development of hybrid calculations. The results of those ADVANTG calculations were then sent to PNNL for compilation. This is a report describing the details of the selected Benchmarks and results from various transport codes.

Shaver, Mark W.; Casella, Andrew M.; Wittman, Richard S.; McDonald, Ben S.

2013-09-24T23:59:59.000Z

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


81

Sell-Side Benchmarks  

E-Print Network (OSTI)

Sell-side analysts employ different benchmarks when defining their stock recommendations. For example, a ‘buy ’ for some brokers means the stock is expected to outperform its peers in the same sector (“sector benchmarkers”), while for other brokers it means the stock is expected to outperform the market (“market benchmarkers”), or just some absolute return (“total benchmarkers”). We explore the validity and implications of the adoption of these different benchmarks. Analysis of the relation between analysts ’ recommendations and their long-term growth and earnings forecasts suggests that analysts indeed abide by their benchmarks: Sector benchmarkers rely less on across-industry information, and focus more on ranking firms within their industries. We also find evidence that market- and sector-benchmarkers are successful in meeting or beating their benchmark returns, while total-benchmarkers are not. However, we do not find much evidence that investors react differently to recommendations based on the different benchmarks. The research carries implications for the correct understanding and interpretation of sell-side research and its investment value.

Ohad Kadan; Leonardo Madureira; Rong Wang; Tzachi Zach

2012-01-01T23:59:59.000Z

82

Energy Benchmarking Database  

E-Print Network (OSTI)

Building energy benchmarking is a useful starting point for commercial building owners and operators to target energy savings opportunities. There are a number of tools and methods for benchmarking energy use. Benchmarking based on regional data can provides more relevant information for California buildings than national tools such as Energy Star. This paper discusses issues related to benchmarking commercial building energy use and the development of Cal-Arch, a building energy benchmarking database for California. Currently Cal-Arch uses existing survey data from California's Commercial End Use Survey (CEUS), a largely underutilized wealth of information collected by California's major utilities. Doe's Commercial Building Energy Consumption Survey (CBECS) is used by a similar tool, Arch, and by a number of other benchmarking tools. Future versions of Arch/Cal-Arch will utilize additional

Satkartar Kinney; Mary Ann Piette; Satkartar Kinney; Mary Ann Piette; Ernest Orlando Lawrence Berkeley; Satkartar Kinney; Mary Ann Piette

2002-01-01T23:59:59.000Z

83

Outage Management Benchmarking Guideline  

Science Conference Proceedings (OSTI)

Benchmarking of power plant outages will help plants target performance improvements to specific elements of a plant outage program in order to improve overall availability, reliability, and safety while decreasing generation costs. EPRI's "Outage Management Benchmarking Guideline" builds on the Institute's fossil and nuclear plant experience with routine maintenance and extends that to outage maintenance processes. The guideline describes the initial steps in an outage benchmarking effort and 13 key ele...

2003-03-26T23:59:59.000Z

84

Magma benchmark code - CECM  

E-Print Network (OSTI)

Below is the Magma code used to run the benchmarks in Section 5 of the paper " In-place Arithmetic for Univariate Polynomials over an Algebraic Number Field" ...

85

Solitary Wave Benchmarks in Magma Dynamics  

E-Print Network (OSTI)

We present a model problem for benchmarking codes that investigate magma migration in the Earth's interior. This system retains the essential features of more sophisticated models, yet has the advantage of possessing solitary wave solutions. The existence of such exact solutions to the nonlinear problem make it an excellent benchmark problem for combinations of solver algorithms. In this work, we explore a novel algorithm for computing high quality approximations of the solitary waves and use them to benchmark a semi-Lagrangian Crank-Nicholson scheme for a finite element discretization of the time dependent problem.

Simpson, Gideon

2010-01-01T23:59:59.000Z

86

Self-benchmarking Guide for Laboratory Buildings: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

Purpose This guide describes energy efficiency metrics andEnergy Use Intensity 28 Laboratory Benchmarking Guidethe energy benchmarking approach describe in this guide can

Mathew, Paul

2010-01-01T23:59:59.000Z

87

Self-benchmarking Guide for Cleanrooms: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

Purpose This guide describes energy efficiency metrics andfor Reheat Energy Use Factor Cleanroom Benchmarking Guidethe energy benchmarking approach describe in this guide can

Mathew, Paul

2010-01-01T23:59:59.000Z

88

Benchmarking e-business security: A model and framework”, Proceedings of 3rd Australian information security management conference  

E-Print Network (OSTI)

The dynamic nature of threats and vulnerabilities within the E-business environment can impede online functionality, compromise organisational or customer information, contravene security implementations and thereby undermine online customer confidence. To negate these problems, E-business security has to become proactive, by reviewing and continuously improving security to strengthen E-business security measures and policies. This can be achieved through benchmarking the security measures and policies utilised within the Ebusiness, against recognised information technology (IT) and information security (IS) security standards.

Graeme Pye; Matthew J. Warren

2005-01-01T23:59:59.000Z

89

I/O Benchmarking Details  

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

IO Benchmarking Details IO Benchmarking Details These benchmarks are simply the transfer rate for copying some files from an eliza file system to TMPDIR on a batch node. Each...

90

Action-Oriented Benchmarking:  

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

Feb-2008 submitted to Energy Engineering Feb-2008 submitted to Energy Engineering Action-Oriented Benchmarking: Concepts and Tools Evan Mills, Paul Mathew & Mary Ann Piette, Lawrence Berkeley National Laboratory Norman Bourassa & Martha Brook, California Energy Commission ABSTRACT Most energy benchmarking tools provide static feedback on how one building compares to a larger set of loosely similar buildings, without providing information at the end-use level or on what can be done to reduce consumption, cost, or emissions. In this article-Part 1 of a two-part series-we describe an "action-oriented benchmarking" approach, which extends whole-building energy benchmarking to include analysis of system and component energy use metrics and features. Action-oriented benchmarking thereby allows users to generate more meaningful

91

ESP: A system utilization benchmark  

E-Print Network (OSTI)

ESP: A System Utilization Benchmark Adrian T. Wong, LeonidEffective System Performance (ESP) test, which is designedEffective System Performance (ESP) benchmark, which measures

Wong, Adrian T.; Oliker, Leonid; Kramer, William T.C.; Kaltz, Teresa L.; Bailey, David H.

2000-01-01T23:59:59.000Z

92

Mixed-Oxide (MOX) Fuel Performance Benchmarks  

Science Conference Proceedings (OSTI)

Within the framework of the OECD/NEA Expert Group on Reactor-based Plutonium disposition (TFRPD), a fuel modeling code benchmarks for MOX fuel was initiated. This paper summarizes the calculation results provided by the contributors for the first two fuel performance benchmark problems. A limited sensitivity study of the effect of the rod power uncertainty on code predictions of fuel centerline temperature and fuel pin pressure also was performed and is included in the paper.

Ott, Larry J [ORNL; Tverberg, Terje [OECD Halden Reactor Project; Sartori, Enrico [ORNL

2009-01-01T23:59:59.000Z

93

Benchmarking and Energy Saving Tool | Open Energy Information  

Open Energy Info (EERE)

Benchmarking and Energy Saving Tool Benchmarking and Energy Saving Tool Jump to: navigation, search Tool Summary Name: Benchmarking and Energy Saving Tool Agency/Company /Organization: Lawrence Berkeley National Laboratory Sector: Energy Focus Area: Energy Efficiency, - Central Plant, Industry Topics: Pathways analysis Resource Type: Software/modeling tools User Interface: Spreadsheet Website: industrial-energy.lbl.gov/node/100 Cost: Free Language: English References: Benchmarking and Energy Saving Tool [1] Logo: Benchmarking and Energy Saving Tool The Benchmarking and Energy Saving Tool (BEST) is an Excel-based spreadsheet energy analysis tool developed by Lawrence Berkeley National Laboratory. The Benchmarking and Energy Saving Tool (BEST) is an Excel-based spreadsheet energy analysis tool developed by Lawrence Berkeley National

94

Introduction to the HPC Challenge Benchmark Suite  

E-Print Network (OSTI)

and Karl Solchenbach. Benchmark design for character-effect of computer benchmarks upon applied mathematics,Pe- titet. The LINPACK benchmark: Past, present, [11] Matteo

2005-01-01T23:59:59.000Z

95

Machine Learning Benchmarks and Random Forest Regression  

E-Print Network (OSTI)

Machine Learning Benchmarks and Random Forest Regressionerror on a suite of benchmark datasets. As the basethe Machine Learning Benchmark Problems package; see http://

Segal, Mark R

2004-01-01T23:59:59.000Z

96

Decommissioning Benchmarking Study Final Report | Department...  

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

Benchmarking Study Final Report Decommissioning Benchmarking Study Final Report DOE's former Office of Environmental Restoration (EM-40) conducted a benchmarking study of its...

97

Investigating the limits of randomized benchmarking protocols  

E-Print Network (OSTI)

In this paper, we analyze the performance of randomized benchmarking protocols on gate sets under a variety of realistic error models that include systematic rotations, amplitude damping, leakage to higher levels, and 1/f noise. We find that, in almost all cases, benchmarking provides better than a factor-of-two estimate of average error rate, suggesting that randomized benchmarking protocols are a valuable tool for verification and validation of quantum operations. In addition, we derive new models for fidelity decay curves under certain types of non-Markovian noise models such as 1/f and leakage errors. We also show that, provided the standard error of the fidelity measurements is small, only a small number of trials are required for high confidence estimation of gate errors.

Jeffrey M. Epstein; Andrew W. Cross; Easwar Magesan; Jay M. Gambetta

2013-08-13T23:59:59.000Z

98

Benchmarking using basic DBMS operations  

Science Conference Proceedings (OSTI)

The TPC-H benchmark proved to be successful in the decision support area. Many commercial database vendors and their related hardware vendors used these benchmarks to show the superiority and competitive edge of their products. However, over time, the ...

Alain Crolotte; Ahmad Ghazal

2010-09-01T23:59:59.000Z

99

Building Energy Use Benchmarking Guidance  

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

Building Energy Use Benchmarking Guidance April 15, 2010 EISA SECTION 432 - Benchmarking of Federal Facilities (42 U.S.C. 8253 Subsection (f), Use of Energy and Water Efficiency...

100

Development of a California commercial building benchmarking database  

SciTech Connect

Building energy benchmarking is a useful starting point for commercial building owners and operators to target energy savings opportunities. There are a number of tools and methods for benchmarking energy use. Benchmarking based on regional data can provides more relevant information for California buildings than national tools such as Energy Star. This paper discusses issues related to benchmarking commercial building energy use and the development of Cal-Arch, a building energy benchmarking database for California. Currently Cal-Arch uses existing survey data from California's Commercial End Use Survey (CEUS), a largely underutilized wealth of information collected by California's major utilities. Doe's Commercial Building Energy Consumption Survey (CBECS) is used by a similar tool, Arch, and by a number of other benchmarking tools. Future versions of Arch/Cal-Arch will utilize additional data sources including modeled data and individual buildings to expand the database.

Kinney, Satkartar; Piette, Mary Ann

2002-05-17T23:59:59.000Z

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


101

California commercial building energy benchmarking  

E-Print Network (OSTI)

benchmarks while control companies and utilities can provide direct tracking of energy use and combine data from multiple buildings.

Kinney, Satkartar; Piette, Mary Ann

2003-01-01T23:59:59.000Z

102

Shielding Integral Benchmark Archive and Database (SINBAD)  

Science Conference Proceedings (OSTI)

The Shielding Integral Benchmark Archive and Database (SINBAD) collection of benchmarks was initiated in the early 1990 s. SINBAD is an international collaboration between the Organization for Economic Cooperation and Development s Nuclear Energy Agency Data Bank (OECD/NEADB) and the Radiation Safety Information Computational Center (RSICC) at Oak Ridge National Laboratory (ORNL). SINBAD is a major attempt to compile experiments and corresponding computational models with the goal of preserving institutional knowledge and expertise that need to be handed down to future scientists. SINBAD is also a learning tool for university students and scientists who need to design experiments or gain expertise in modeling and simulation. The SINBAD database is currently divided into three categories fission, fusion, and accelerator benchmarks. Where possible, each experiment is described and analyzed using deterministic or probabilistic (Monte Carlo) radiation transport software.

Kirk, Bernadette Lugue [ORNL; Grove, Robert E [ORNL; Kodeli, I. [International Atomic Energy Agency (IAEA); Sartori, Enrico [ORNL; Gulliford, J. [OECD Nuclear Energy Agency

2011-01-01T23:59:59.000Z

103

Historical Context  

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

Context Historical Context for the Conversion EISs Important events and decisions that led to development of the depleted UF6 Conversion EISs. 1992: Concerns Raised by Ohio...

104

Benchmarking of the MIT High Temperature Gas-cooled Reactor TRISO-coated particle fuel performance model  

E-Print Network (OSTI)

MIT has developed a Coated Particle Fuel Performance Model to study the behavior of TRISO nuclear fuels. The code, TIMCOAT, is designed to assess the mechanical and chemical condition of populations of coated particles and ...

Stawicki, Michael A

2006-01-01T23:59:59.000Z

105

Senior Design Projects 2013 Project Title 1 : Monte Carlo Simulations Using a Benchmark Full-Core Pressured Water Rector Model  

E-Print Network (OSTI)

defined in MCNP. There are a number of approaches in parallel high performance computing that can and 7,168 GPUs. The high performance computing industry is moving toward a hybrid computer model, where

Danon, Yaron

106

Benchmark of Atucha-2 PHWR RELAP5-3D control rod model by Monte Carlo MCNP5 core calculation  

Science Conference Proceedings (OSTI)

Atucha-2 is a Siemens-designed PHWR reactor under construction in the Republic of Argentina. Its geometrical complexity and peculiarities require the adoption of advanced Monte Carlo codes for performing realistic neutronic simulations. Therefore core models of Atucha-2 PHWR were developed using MCNP5. In this work a methodology was set up to collect the flux in the hexagonal mesh by which the Atucha-2 core is represented. The scope of this activity is to evaluate the effect of obliquely inserted control rod on neutron flux in order to validate the RELAP5-3D{sup C}/NESTLE three dimensional neutron kinetic coupled thermal-hydraulic model, applied by GRNSPG/UNIPI for performing selected transients of Chapter 15 FSAR of Atucha-2. (authors)

Pecchia, M.; D'Auria, F. [San Piero A Grado Nuclear Research Group GRNSPG, Univ. of Pisa, via Diotisalvi, 2, 56122 - Pisa (Italy); Mazzantini, O. [Nucleo-electrica Argentina Societad Anonima NA-SA, Buenos Aires (Argentina)

2012-07-01T23:59:59.000Z

107

Action-Oriented Benchmarking: Using the CEUS Database to Benchmark Commercial Buildings in California  

E-Print Network (OSTI)

Using the CEUS Database to Benchmark Commercial Buildings infeatures allow users to “benchmark” the presence or absencefor Required Building Data Benchmark Applicable Metrics &

Mathew, Paul

2008-01-01T23:59:59.000Z

108

Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

Hours (full cooling) Electrical Power Chain dP1 UPS Peak20 Electrical Power ChainBenchmarking Guide 6. Electrical Power Chain Metrics ID P1

Mathew, Paul

2010-01-01T23:59:59.000Z

109

Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

Purpose This guide describes energy efficiency metrics andthe energy benchmarking approach describe in this guide candesigners and energy managers. This guide also builds on

Mathew, Paul

2010-01-01T23:59:59.000Z

110

Self-benchmarking Guide for Data Centers: Metrics, Benchmarks, Actions  

SciTech Connect

This guide describes energy efficiency metrics and benchmarks that can be used to track the performance of and identify potential opportunities to reduce energy use in data centers. This guide is primarily intended for personnel who have responsibility for managing energy use in existing data centers - including facilities managers, energy managers, and their engineering consultants. Additionally, data center designers may also use the metrics and benchmarks described in this guide for goal-setting in new construction or major renovation. This guide provides the following information: (1) A step-by-step outline of the benchmarking process. (2) A set of performance metrics for the whole building as well as individual systems. For each metric, the guide provides a definition, performance benchmarks, and potential actions that can be inferred from evaluating this metric. (3) A list and descriptions of the data required for computing the metrics. This guide is complemented by spreadsheet templates for data collection and for computing the benchmarking metrics. This guide builds on prior data center benchmarking studies supported by the California Energy Commission. Much of the benchmarking data are drawn from the LBNL data center benchmarking database that was developed from these studies. Additional benchmark data were obtained from engineering experts including facility designers and energy managers. This guide also builds on recent research supported by the U.S. Department of Energy's Save Energy Now program.

Mathew, Paul; Ganguly, Srirupa; Greenberg, Steve; Sartor, Dale

2009-07-13T23:59:59.000Z

111

Historical Data  

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

Data Historical Data Edison Phase I Hours Used Hours used per day on Hopper. Read More Franklin Hours Used Hours used per day on Franklin. Read More Last edited: 2013-08-28...

112

Benchmarking Electricity Liberalisation in Europe  

E-Print Network (OSTI)

sources does the country’s electricity industry use? A country with a high proportion of hydro-electricity may not be exposed to fluctuations in the prices of fossil fuels, but is vulnerable to years with low precipitation. Historically, oil prices have... the summer of 2000. The disadvantages of this measure include the significant effort required to calculate it. Although simple models of the industry can be built and maintained at low cost, and regularly updated with fuel prices and demand levels...

Green, Richard J; Lorenzoni, Arturo; Perez, Yannick; Pollitt, Michael G.

113

Quantum Benchmarks from minimal Resources  

E-Print Network (OSTI)

We investigate several recently published benchmark criteria for storage or transmission of quantum information. A comparison reveals that criteria based on a Gaussian distribution of coherent states are most resilient to noise. We then address the issue of experimental resources and derive an equally strong benchmark, solely based on three coherent states and homodyne detection. This benchmark is further simplified in the presence of naturally occurring random phases, which remove the need for active input state modulation.

Häseler, Hauke

2009-01-01T23:59:59.000Z

114

Sustained System Performance (SSP) Benchmark  

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

John M. Shalf, and Erich Strohmaier Background The NERSC Approach to Procurement Benchmarks The NERSC-5 SSP The NERSC-6 SSP The Effective System Performance (ESP) Metric...

115

BENCHMARKING EMERGING PIPELINE INSPECTION TECHNOLOGIES  

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

FINAL REPORT Benchmarking Emerging Pipeline Inspection Technologies To Department of Energy National Energy Technology Laboratory (NETL) DE-AP26-04NT40361 and Department of...

116

Effective System Performance (ESP) Benchmark  

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

System Performance (ESP) Benchmark It is now generally recognized in the high performance computing community that peak performance does not adequately predict the usefulness...

117

Decommissioning Benchmarking Study Final Report  

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

DOE's former Office of Environmental Restoration (EM-40) conducted a benchmarking study of its decommissioning program to analyze physical activities in facility decommissioning and to determine...

118

Benchmarking ICRF simulations for ITER  

DOE Green Energy (OSTI)

Abstract Benchmarking of full-wave solvers for ICRF simulations is performed using plasma profiles and equilibria obtained from integrated self-consistent modeling predictions of four ITER plasmas. One is for a high performance baseline (5.3 T, 15 MA) DT H-mode plasma. The others are for half-field, half-current plasmas of interest for the pre-activation phase with bulk plasma ion species being either hydrogen or He4. The predicted profiles are used by seven groups to predict the ICRF electromagnetic fields and heating profiles. Approximate agreement is achieved for the predicted heating power partitions for the DT and He4 cases. Profiles of the heating powers and electromagnetic fields are compared.

R. V. Budny, L. Berry, R. Bilato, P. Bonoli, M. Brambilla, R.J. Dumont, A. Fukuyama, R. Harvey, E.F. Jaeger, E. Lerche, C.K. Phillips, V. Vdovin, J. Wright, and members of the ITPA-IOS

2010-09-28T23:59:59.000Z

119

Building energy benchmarks and rating tools | Department of Energy  

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

Building energy benchmarks and rating tools Building energy benchmarks and rating tools Building energy benchmarks and rating tools Building energy benchmarks and rating tools More...

120

Non-Standard Models of Arithmetic: a Philosophical and Historical perspective MSc Thesis (Afstudeerscriptie)  

E-Print Network (OSTI)

1 Descriptive use of logic and Intended models 1 1.1 Standard models of arithmetic.......................... 1 1.2 Axiomatics and Formal theories......................... 3 1.3 Hintikka and the two uses of logic in mathematics.............. 5

Nicola Di Giorgio

2010-01-01T23:59:59.000Z

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


121

Cleanroom Energy Efficiency: Metrics and Benchmarks  

E-Print Network (OSTI)

The key metrics and benchmarks to evaluate the efficiency ofEfficiency: Metrics and Benchmarks Paul A. Mathew, WilliamEfficiency: Metrics and Benchmarks Paul A. Mathew, Ph.D,

Mathew, Paul A.

2012-01-01T23:59:59.000Z

122

Building Energy Use Benchmarking Guidance  

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

Building Energy Use Benchmarking Guidance April 15, 2010 EISA SECTION 432 - Benchmarking of Federal Facilities (42 U.S.C. 8253 Subsection (f), Use of Energy and Water Efficiency Measures in Federal Buildings) I. Background A. Authority - Benchmarking Requirements Section 432 of the Energy Independence and Security Act of 2007 (EISA) requires the Secretary of the United States Department of Energy (DOE) to select or develop a building energy use benchmarking system and to issue guidance for use of the system. EISA requires the designated agency energy managers to enter energy use data for each metered building that is (or is a part of) a covered facility into a building energy use benchmarking system, such as the ENERGY STAR Portfolio Manager tool (Portfolio Manager) (see 42 U.S.C. 8253(f)(8)(A), as

123

Quantum benchmarks for Gaussian states  

E-Print Network (OSTI)

Teleportation and storage of continuous variable states of light and atoms are essential building blocks for the realization of large scale quantum networks. Rigorous validation of these implementations require identifying, and surpassing, benchmarks set by the most effective strategies attainable without the use of quantum resources. Such benchmarks have been established for special families of input states, like coherent states and particular subclasses of squeezed states. Here we solve the longstanding problem of defining quantum benchmarks for general pure Gaussian states with arbitrary phase, displacement, and squeezing, randomly sampled according to a realistic prior distribution. As a special case, we show that the fidelity benchmark for teleporting squeezed states with totally random phase and squeezing degree is 1/2, equal to the corresponding one for coherent states. We discuss the use of entangled resources to beat the benchmarks in experiments.

Chiribella, Giulio

2013-01-01T23:59:59.000Z

124

Benchmarking foreign electronics technologies  

SciTech Connect

This report has been drafted in response to a request from the Japanese Technology Evaluation Center`s (JTEC) Panel on Benchmarking Select Technologies. Since April 1991, the Competitive Semiconductor Manufacturing (CSM) Program at the University of California at Berkeley has been engaged in a detailed study of quality, productivity, and competitiveness in semiconductor manufacturing worldwide. The program is a joint activity of the College of Engineering, the Haas School of Business, and the Berkeley Roundtable on the International Economy, under sponsorship of the Alfred P. Sloan Foundation, and with the cooperation of semiconductor producers from Asia, Europe and the United States. Professors David A. Hodges and Robert C. Leachman are the project`s Co-Directors. The present report for JTEC is primarily based on data and analysis drawn from that continuing program. The CSM program is being conducted by faculty, graduate students and research staff from UC Berkeley`s Schools of Engineering and Business, and Department of Economics. Many of the participating firms are represented on the program`s Industry Advisory Board. The Board played an important role in defining the research agenda. A pilot study was conducted in 1991 with the cooperation of three semiconductor plants. The research plan and survey documents were thereby refined. The main phase of the CSM benchmarking study began in mid-1992 and will continue at least through 1997. reports are presented on the manufacture of integrated circuits; data storage; wireless technology; human-machine interfaces; and optoelectronics. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database.

Bostian, C.W.; Hodges, D.A.; Leachman, R.C.; Sheridan, T.B.; Tsang, W.T.; White, R.M.

1994-12-01T23:59:59.000Z

125

Historical Tracking  

Science Conference Proceedings (OSTI)

...Historical tracking is a process of measuring, recording, and analyzing one or more specific characteristics of a process. This record then becomes the basis on which the current state of the process can be assessed and the future state of the process predicted....

126

Benchmark Data Through The International Reactor Physics Experiment Evaluation Project (IRPHEP)  

SciTech Connect

The International Reactor Physics Experiments Evaluation Project (IRPhEP) was initiated by the Organization for Economic Cooperation and Development (OECD) Nuclear Energy Agency’s (NEA) Nuclear Science Committee (NSC) in June of 2002. The IRPhEP focus is on the derivation of internationally peer reviewed benchmark models for several types of integral measurements, in addition to the critical configuration. While the benchmarks produced by the IRPhEP are of primary interest to the Reactor Physics Community, many of the benchmarks can be of significant value to the Criticality Safety and Nuclear Data Communities. Benchmarks that support the Next Generation Nuclear Plant (NGNP), for example, also support fuel manufacture, handling, transportation, and storage activities and could challenge current analytical methods. The IRPhEP is patterned after the International Criticality Safety Benchmark Evaluation Project (ICSBEP) and is closely coordinated with the ICSBEP. This paper highlights the benchmarks that are currently being prepared by the IRPhEP that are also of interest to the Criticality Safety Community. The different types of measurements and associated benchmarks that can be expected in the first publication and beyond are described. The protocol for inclusion of IRPhEP benchmarks as ICSBEP benchmarks and for inclusion of ICSBEP benchmarks as IRPhEP benchmarks is detailed. The format for IRPhEP benchmark evaluations is described as an extension of the ICSBEP format. Benchmarks produced by the IRPhEP add new dimension to criticality safety benchmarking efforts and expand the collection of available integral benchmarks for nuclear data testing. The first publication of the "International Handbook of Evaluated Reactor Physics Benchmark Experiments" is scheduled for January of 2006.

J. Blair Briggs; Dr. Enrico Sartori

2005-09-01T23:59:59.000Z

127

Action-Oriented Benchmarking: Concepts and Tools  

E-Print Network (OSTI)

simulation (for design) or energy audits (for retrofit), asconventional benchmarking and energy audits. Whole BuildingBenchmarking Investment-Grade Energy Audit Screen facilities

Mills, Evan; California Energy Commission

2008-01-01T23:59:59.000Z

128

Using Random Effects to Build Impact Models When the Available Historical Record Is Short  

Science Conference Proceedings (OSTI)

The analysis of the affect of weather and climate on human activities requires the construction of impact models that are able to describe the complex links between weather and socioeconomic data. In practice, one of the biggest challenges is the ...

Filipe Aires

2012-11-01T23:59:59.000Z

129

Precise Regression Benchmarking with Random Effects: Improving Mono Benchmark Results  

E-Print Network (OSTI)

Benchmarking as a method of assessing software performance is known to su#er from random fluctuations that distort the observed performance. In this paper, we focus on the fluctuations caused by compilation.

Tomas Kalibera; Petr Tuma

2006-01-01T23:59:59.000Z

130

Self-benchmarking Guide for Laboratory Buildings: Metrics, Benchmarks, Actions  

E-Print Network (OSTI)

Building Site Energy Intensity (BTU/sf-yr). A Performance Benchmarkand benchmarks that can be used to track the performance of and identify potential opportunities to reduce energy use in laboratory buildings.

Mathew, Paul

2010-01-01T23:59:59.000Z

131

Virtual reality models for the preservation of the unesco historical and artistical heritage  

Science Conference Proceedings (OSTI)

Reproduction of space with very high yield of photo-realism, through the use of special three-dimensional modelling techniques, enables the enhancement of the places of the "Great Mtskheta", the ancient capital city of Georgia, which are mostly in a ... Keywords: 3D virtual world, UNESCO, cultural heritage, geographical information system, tourism

Roberta Menghi; Giuseppe Maino; Marianna Panebarco

2011-09-01T23:59:59.000Z

132

Phase-Covariant Quantum Benchmarks  

E-Print Network (OSTI)

We give a quantum benchmark for teleportation and quantum storage experiments suited for pure and mixed test states. The benchmark is based on the average fidelity over a family of phase-covariant states and certifies that an experiment can not be emulated by a classical setup, i.e., by a measure-and-prepare scheme. We give an analytical solution for qubits, which shows important differences with standard state estimation approach, and compute the value of the benchmark for coherent and squeezed states, both pure and mixed.

Calsamiglia, J; Muńoz-Tŕpia, R; Bagán, E

2008-01-01T23:59:59.000Z

133

Phase-Covariant Quantum Benchmarks  

E-Print Network (OSTI)

We give a quantum benchmark for teleportation and quantum storage experiments suited for pure and mixed test states. The benchmark is based on the average fidelity over a family of phase-covariant states and certifies that an experiment can not be emulated by a classical setup, i.e., by a measure-and-prepare scheme. We give an analytical solution for qubits, which shows important differences with standard state estimation approach, and compute the value of the benchmark for coherent and squeezed states, both pure and mixed.

J. Calsamiglia; M. Aspachs; R. Munoz-Tapia; E. Bagan

2008-07-31T23:59:59.000Z

134

California commercial building energy benchmarking  

SciTech Connect

Building energy benchmarking is the comparison of whole-building energy use relative to a set of similar buildings. It provides a useful starting point for individual energy audits and for targeting buildings for energy-saving measures in multiple-site audits. Benchmarking is of interest and practical use to a number of groups. Energy service companies and performance contractors communicate energy savings potential with ''typical'' and ''best-practice'' benchmarks while control companies and utilities can provide direct tracking of energy use and combine data from multiple buildings. Benchmarking is also useful in the design stage of a new building or retrofit to determine if a design is relatively efficient. Energy managers and building owners have an ongoing interest in comparing energy performance to others. Large corporations, schools, and government agencies with numerous facilities also use benchmarking methods to compare their buildings to each other. The primary goal of Task 2.1.1 Web-based Benchmarking was the development of a web-based benchmarking tool, dubbed Cal-Arch, for benchmarking energy use in California commercial buildings. While there were several other benchmarking tools available to California consumers prior to the development of Cal-Arch, there were none that were based solely on California data. Most available benchmarking information, including the Energy Star performance rating, were developed using DOE's Commercial Building Energy Consumption Survey (CBECS), which does not provide state-level data. Each database and tool has advantages as well as limitations, such as the number of buildings and the coverage by type, climate regions and end uses. There is considerable commercial interest in benchmarking because it provides an inexpensive method of screening buildings for tune-ups and retrofits. However, private companies who collect and manage consumption data are concerned that the identities of building owners might be revealed and hence are reluctant to share their data. The California Commercial End Use Survey (CEUS), the primary source of data for Cal-Arch, is a unique source of information on commercial buildings in California. It has not been made public; however, it was made available by CEC to LBNL for the purpose of developing a public benchmarking tool.

Kinney, Satkartar; Piette, Mary Ann

2003-07-01T23:59:59.000Z

135

A Simplified HTTR Diffusion Theory Benchmark  

SciTech Connect

The Georgia Institute of Technology (GA-Tech) recently developed a transport theory benchmark based closely on the geometry and the features of the HTTR reactor that is operational in Japan. Though simplified, the benchmark retains all the principal physical features of the reactor and thus provides a realistic and challenging test for the codes. The purpose of this paper is twofold. The first goal is an extension of the benchmark to diffusion theory applications by generating the additional data not provided in the GA-Tech prior work. The second goal is to use the benchmark on the HEXPEDITE code available to the INL. The HEXPEDITE code is a Green’s function-based neutron diffusion code in 3D hexagonal-z geometry. The results showed that the HEXPEDITE code accurately reproduces the effective multiplication factor of the reference HELIOS solution. A secondary, but no less important, conclusion is that in the testing against actual HTTR data of a full sequence of codes that would include HEXPEDITE, in the apportioning of inevitable discrepancies between experiment and models, the portion of error attributable to HEXPEDITE would be expected to be modest. If large discrepancies are observed, they would have to be explained by errors in the data fed into HEXPEDITE. Results based on a fully realistic model of the HTTR reactor are presented in a companion paper. The suite of codes used in that paper also includes HEXPEDITE. The results shown here should help that effort in the decision making process for refining the modeling steps in the full sequence of codes.

Rodolfo M. Ferrer; Abderrafi M. Ougouag; Farzad Rahnema

2010-10-01T23:59:59.000Z

136

Sustained System Performance (SSP) Benchmark  

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

Sustained System Sustained System Performance (SSP) Benchmark Sustained System Performance (SSP) Benchmark William T.C. Kramer, John M. Shalf, and Erich Strohmaier Background The NERSC Approach to Procurement Benchmarks The NERSC-5 SSP The NERSC-6 SSP The Effective System Performance (ESP) Metric Conclusion Notes Formal description of SSP A formal description of the SSP, including detailed formulae, is now available. This is a portion of the soon-to-be-published Ph.D. dissertation, Kramer, W.T.C., 2008, "PERCU: A Holistic Method for Evaluating High End Computing Systems," Department of Electrical Engineering and Computer Science, University of California, Berkeley. Background Most plans and reports recently discuss only one of four distinct purposes benchmarks are used. The obvious purpose is selection of a system from

137

ESP: a system utilization benchmark  

Science Conference Proceedings (OSTI)

This article describes a new benchmark, called the Effective System Performance (ESP) test, which is designed to measure system-level performance, including such factors as job scheduling efficiency, handling of large jobs and shutdown-reboot times. ...

Adrian T. Wong; Leonid Oliker; William T. C. Kramer; Teresa L. Kaltz; David H. Bailey

2000-11-01T23:59:59.000Z

138

A PWR Thorium Pin Cell Burnup Benchmark  

SciTech Connect

As part of work to evaluate the potential benefits of using thorium in LWR fuel, a thorium fueled benchmark comparison was made in this study between state-of-the-art codes, MOCUP (MCNP4B + ORIGEN2), and CASMO-4 for burnup calculations. The MOCUP runs were done individually at MIT and INEEL, using the same model but with some differences in techniques and cross section libraries. Eigenvalue and isotope concentrations were compared on a PWR pin cell model up to high burnup. The eigenvalue comparison as a function of burnup is good: the maximum difference is within 2% and the average absolute difference less than 1%. The isotope concentration comparisons are better than a set of MOX fuel benchmarks and comparable to a set of uranium fuel benchmarks reported in the literature. The actinide and fission product data sources used in the MOCUP burnup calculations for a typical thorium fuel are documented. Reasons for code vs code differences are analyzed and discussed.

Weaver, Kevan Dean; Zhao, X.; Pilat, E. E; Hejzlar, P.

2000-05-01T23:59:59.000Z

139

Depletion Reactivity Benchmark for the International Handbook of Evaluated Reactor Physics Benchmark Experiments  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute– (EPRI-) sponsored depletion reactivity benchmarks documented in reports 1022909, Benchmarks for Quantifying Fuel Reactivity Depletion Uncertainty, and 1025203, Utilization of the EPRI Depletion Benchmarks for Burnup Credit Validation, have been translated to an evaluated benchmark for incorporation in the International Handbook of Evaluated Reactor Physics Benchmark Experiments (IRPhE), published by the Organisation for Economic ...

2013-04-10T23:59:59.000Z

140

Benchmark scenarios for the NMSSM  

E-Print Network (OSTI)

We discuss constrained and semi--constrained versions of the next--to--minimal supersymmetric extension of the Standard Model (NMSSM) in which a singlet Higgs superfield is added to the two doublet superfields that are present in the minimal extension (MSSM). This leads to a richer Higgs and neutralino spectrum and allows for many interesting phenomena that are not present in the MSSM. In particular, light Higgs particles are still allowed by current constraints and could appear as decay products of the heavier Higgs states, rendering their search rather difficult at the LHC. We propose benchmark scenarios which address the new phenomenological features, consistent with present constraints from colliders and with the dark matter relic density, and with (semi--)universal soft terms at the GUT scale. We present the corresponding spectra for the Higgs particles, their couplings to gauge bosons and fermions and their most important decay branching ratios. A brief survey of the search strategies for these states at the LHC is given.

A. Djouadi; M. Drees; U. Ellwanger; R. Godbole; C. Hugonie; S. F. King; S. Lehti; S. Moretti; A. Nikitenko; I. Rottlaender; M. Schumacher; A. Teixeira

2008-01-28T23:59:59.000Z

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


141

Robust randomized benchmarking of quantum processes  

E-Print Network (OSTI)

We describe a simple randomized benchmarking protocol for quantum information processors and obtain a sequence of models for the observable fidelity decay as a function of a perturbative expansion of the errors. We are able to prove that the protocol provides an efficient and reliable estimate of an average error-rate for a set operations (gates) under a general noise model that allows for both time and gate-dependent errors. We determine the conditions under which this estimate remains valid and illustrate the protocol through numerical examples.

Easwar Magesan; J. M. Gambetta; Joseph Emerson

2010-09-19T23:59:59.000Z

142

Historical. Information.  

Office of Legacy Management (LM)

Historical. Information. Historical. Information. ~ H.. 1 . General Project Rulison Manager' s Report, April. 1973 DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. PROJECT RULISON MANAGER'S R E P O R T APRIL 197.3 UNITED STATES ATOMIC ENERGY COMMISSION NEVADA OPERATIONS OFFICE Las Vegas, Nevada PREFACE , The R u l i s o n ' p r o j e c t , d e t o n a t e d September 1 0 , 1969, 'was t h e second n u c l e a r . d e t o n a t i o n designed t o d e t e r m i n e t h e economic and t e c h n i c a l f e a s i b i l i t y . of u s i n g n u c l e a r e x p l o s i v e s t o s t i m u l a t e an underground, low-productivity n a t u r a l gas r e s e r v o i r . The p r o j e c t was p a r t of t h e Atomic Energy Commission's (AEC) Plowshare program f o r d e v e l o p i n g p e a c e f u l a p p l i c a t i o n of n u c l e a r e x p l

143

Benchmark Evaluation of the NRAD Reactor LEU Core Startup Measurements  

Science Conference Proceedings (OSTI)

The Neutron Radiography (NRAD) reactor is a 250-kW TRIGA-(Training, Research, Isotope Production, General Atomics)-conversion-type reactor at the Idaho National Laboratory; it is primarily used for neutron radiography analysis of irradiated and unirradiated fuels and materials. The NRAD reactor was converted from HEU to LEU fuel with 60 fuel elements and brought critical on March 31, 2010. This configuration of the NRAD reactor has been evaluated as an acceptable benchmark experiment and is available in the 2011 editions of the International Handbook of Evaluated Criticality Safety Benchmark Experiments (ICSBEP Handbook) and the International Handbook of Evaluated Reactor Physics Benchmark Experiments (IRPhEP Handbook). Significant effort went into precisely characterizing all aspects of the reactor core dimensions and material properties; detailed analyses of reactor parameters minimized experimental uncertainties. The largest contributors to the total benchmark uncertainty were the 234U, 236U, Er, and Hf content in the fuel; the manganese content in the stainless steel cladding; and the unknown level of water saturation in the graphite reflector blocks. A simplified benchmark model of the NRAD reactor was prepared with a keff of 1.0012 {+-} 0.0029 (1s). Monte Carlo calculations with MCNP5 and KENO-VI and various neutron cross section libraries were performed and compared with the benchmark eigenvalue for the 60-fuel-element core configuration; all calculated eigenvalues are between 0.3 and 0.8% greater than the benchmark value. Benchmark evaluations of the NRAD reactor are beneficial in understanding biases and uncertainties affecting criticality safety analyses of storage, handling, or transportation applications with LEU-Er-Zr-H fuel.

J. D. Bess; T. L. Maddock; M. A. Marshall

2011-09-01T23:59:59.000Z

144

Effective System Performance (ESP) Benchmark  

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

Effective System Effective System Performance (ESP) Benchmark Effective System Performance (ESP) Benchmark It is now generally recognized in the high performance computing community that peak performance does not adequately predict the usefulness of a system for a given set of applications. One of the first benchmarks designed to measure system performance in a real-world operational environment was NERSC's Effective System Performance (ESP) test. NERSC introduced ESP in 1999 with the hope that this test would be of use to system managers and would help to spur the community (both researchers and vendors) to improve system efficiency. The discussion below uses examples from the Cray T3E system that NERSC was operating in 1999. Improved MPP System Efficiency Equals Million-Dollar Savings

145

Benchmarking Energy Use in Schools  

E-Print Network (OSTI)

Local governments across the United States spent approximately $5 billion, an average of $100 million per state, on energy for their public schools in 1992. This represents a tremendous drain on education dollars of which part (captured through building system and operational efficiency improvements) could be directed toward more important educational needs. States and local governments know there are sizeable opportunities, but are challenged by how and where to start. IdentifLing the worst energy performers, with the most potential, easily and at low cost is a key in motivating local governments into action. Energy benchmarking is an excellent tool for this purpose. The 1992 US Energy Information Administration’s Commercial Buildings Energy Consumption Survey (CBECS) database is investigated as a source for energy benchmarks for local-government-owned schools. Average energy use values derived from CBECS are shown to be poor energy benchmarks. Simple distributions of building energy use values derived from CBECS, however, are shown to be reliable energy benchmarks for local schools. These can be used to gauge the energy performance of your local public school. Using a stepwise, linear-regression analysis, the primary determinants of electric use in local schools were found to be gross floor area, year of construction, use of walk-in coolers, electric cooling, non-electric energy use, roof construction, and HVAC operational responsibility. The determinants vary depending on the school’s location. While benchmarking based on simple distributions is a good method, an improved benchmarking method which can account for these additional drivers of energy use is detailed.

Terv R. Sharp; Oak Ridge; National Laboratoy

1998-01-01T23:59:59.000Z

146

Advanced benchmarking for complex building types: laboratories as an exemplar.  

E-Print Network (OSTI)

Metrics and Benchmarks for Energy Efficiency inmetrics. However, benchmarks generated from simulations areetc. Whole-building benchmarks are limited in their

Mathew, Paul; Clear, Robert; Kircher, Kevin; Webster, Tom; Lee, Kwang Ho; Hoyt, Tyler

2010-01-01T23:59:59.000Z

147

Advanced Benchmarking for Complex Building Types: Laboratories as an Exemplar  

E-Print Network (OSTI)

Metrics and Benchmarks for Energy Efficiency inmodel to generate a benchmark energy intensity normalizedlimited efforts thus far to benchmark laboratory facilities

Mathew, Paul A.

2010-01-01T23:59:59.000Z

148

Metrics and Benchmarks for Energy Efficiency in Laboratories  

E-Print Network (OSTI)

Report 4-10-08 Metrics and Benchmarks for Energy Efficiencybenchmarking database. The benchmarks for standard, good andefficiency metrics and benchmarks for laboratories, which

Mathew, Paul; Rumsey Engineers

2008-01-01T23:59:59.000Z

149

Outlook for Industrial Energy Benchmarking  

E-Print Network (OSTI)

The U.S. Environmental Protection Agency is exploring options to sponsor an industrial energy efficiency benchmarking study to identify facility specific, cost-effective best practices and technologies. Such a study could help develop a common understanding of opportunities for energy efficiency improvements and provide additional information to improve the competitiveness of U.S. industry. The EPA's initial benchmarking efforts will focus on industrial power facilities. The key industries of interest include the most energy intensive industries, such as chemical, pulp and paper, and iron and steel manufacturing.

Hartley, Z.

2000-04-01T23:59:59.000Z

150

Model Validation  

Science Conference Proceedings (OSTI)

...thus establishing appropriate and important benchmarks. Benchmarking can go beyond validation and also measure relative computational speed, accuracy, and breadth for available modeling approaches and implementations, providing valuable information for users to discern the best models and for modelers...

151

DataTrends Benchmarking and Energy Savings  

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

Benchmarking and Energy Savings Do buildings that consistently benchmark energy performance save energy? The answer is yes, based on the large number of buildings using the U.S....

152

COSBench: cloud object storage benchmark  

Science Conference Proceedings (OSTI)

With object storage systems being increasingly recognized as a preferred way to expose one's storage infrastructure to the web, the past few years have witnessed an explosion in the acceptance of these systems. Unfortunately, the proliferation of available ... Keywords: benchmark tool, object storage

Qing Zheng; Haopeng Chen; Yaguang Wang; Jian Zhang; Jiangang Duan

2013-04-01T23:59:59.000Z

153

Aluchemie Back to Benchmark - Programmaster.org  

Science Conference Proceedings (OSTI)

Meeting, 2010 TMS Annual Meeting & Exhibition. Symposium, Electrode Technology for Aluminum Production. Presentation Title, Aluchemie Back to Benchmark.

154

Testing (Validating?) Cross Sections with ICSBEP Benchmarks  

SciTech Connect

We discuss how to use critical benchmarks from the International Handbook of Evaluated Criticality Safety Benchmark Experiments to determine the applicability of specific cross sections to the end-user's problem of interest. Particular attention is paid to making sure the selected suite of benchmarks includes the user's range of applicability (ROA).

Kahler, Albert C. III [Los Alamos National Laboratory

2012-06-28T23:59:59.000Z

155

Advanced benchmarking for complex building types: laboratories as an exemplar.  

E-Print Network (OSTI)

benchmark against which energy use for a given building canbuilding systems and resulting energy use. The Labs21 Benchmark

Mathew, Paul; Clear, Robert; Kircher, Kevin; Webster, Tom; Lee, Kwang Ho; Hoyt, Tyler

2010-01-01T23:59:59.000Z

156

Advanced Benchmarking for Complex Building Types: Laboratories as an Exemplar  

E-Print Network (OSTI)

benchmark against which energy use for a given building canbuilding systems and resulting energy use. The Labs21 Benchmark

Mathew, Paul A.

2010-01-01T23:59:59.000Z

157

Historical Natural Gas Annual  

Annual Energy Outlook 2012 (EIA)

8 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

158

Historical Natural Gas Annual  

Gasoline and Diesel Fuel Update (EIA)

7 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

159

Historical Natural Gas Annual  

Annual Energy Outlook 2012 (EIA)

6 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

160

Preliminary analysis of feasible benchmark problems for the hydrid PRAM/NUMA REPLICA architecture  

Science Conference Proceedings (OSTI)

We study benchmarking on modern chip multi-processors (CMP), and outline a set of programs to measure the architectural performance properties, focusing on the REPLICA architecture employing a hybrid of PRAM and NUMA computational models. We analyse ... Keywords: benchmarking, multi-core, parallel computing, processor architecture

Jari-Matti Mäkelä; Ville Leppänen; Martti Forsell

2012-06-01T23:59:59.000Z

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


161

WMAP-Compliant Benchmark Surfaces for MSSM Higgs Bosons  

E-Print Network (OSTI)

We explore `benchmark surfaces' suitable for studying the phenomenology of Higgs bosons in the minimal supersymmetric extension of the Standard Model (MSSM), which are chosen so that the supersymmetric relic density is generally compatible with the range of cold dark matter density preferred by WMAP and other observations. These benchmark surfaces are specified assuming that gaugino masses m_{1/2}, soft trilinear supersymmetry-breaking parameters A_0 and the soft supersymmetry-breaking contributions m_0 to the squark and slepton masses are universal, but not those associated with the Higgs multiplets (the NUHM framework). The benchmark surfaces may be presented as M_A-tan_beta planes with fixed or systematically varying values of the other NUHM parameters, such as m_0, m_{1/2}, A_0 and the Higgs mixing parameter mu. We discuss the prospects for probing experimentally these benchmark surfaces at the Tevatron collider, the LHC, the ILC, in B physics and in direct dark-matter detection experiments. An Appendix documents developments in the FeynHiggs code that enable the user to explore for her/himself the WMAP-compliant benchmark surfaces.

J. Ellis; T. Hahn; S. Heinemeyer; K. A. Olive; G. Weiglein

2007-09-02T23:59:59.000Z

162

Geothermal Heat Pump Benchmarking Report  

SciTech Connect

A benchmarking study was conducted on behalf of the Department of Energy to determine the critical factors in successful utility geothermal heat pump programs. A Successful program is one that has achieved significant market penetration. Successfully marketing geothermal heat pumps has presented some major challenges to the utility industry. However, select utilities have developed programs that generate significant GHP sales. This benchmarking study concludes that there are three factors critical to the success of utility GHP marking programs: (1) Top management marketing commitment; (2) An understanding of the fundamentals of marketing and business development; and (3) An aggressive competitive posture. To generate significant GHP sales, competitive market forces must by used. However, because utilities have functioned only in a regulated arena, these companies and their leaders are unschooled in competitive business practices. Therefore, a lack of experience coupled with an intrinsically non-competitive culture yields an industry environment that impedes the generation of significant GHP sales in many, but not all, utilities.

1997-01-17T23:59:59.000Z

163

BENCHMARKING EMERGING PIPELINE INSPECTION TECHNOLOGIES  

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

Benchmarking Emerging Pipeline Inspection Technologies To Department of Energy National Energy Technology Laboratory (NETL) DE-AP26-04NT40361 and Department of Transportation Research and Special Programs Administration (RSPA) DTRS56-02-T-0002 (Milestone 7) September 2004 Final Report on Benchmarking Emerging Pipeline Inspection Technologies Cofunded by Department of Energy National Energy Technology Laboratory (NETL) DE-AP26-04NT40361 and Department of Transportation Research and Special Programs Administration (RSPA) DTRS56-02-T-0002 (Milestone 7) by Stephanie A. Flamberg and Robert C. Gertler September 2004 BATTELLE 505 King Avenue Columbus, Ohio 43201-2693 Neither Battelle, nor any person acting on their behalf: (1) Makes any warranty or representation, expressed or implied, with respect to the

164

Restaurant Energy Use Benchmarking Guideline  

Science Conference Proceedings (OSTI)

A significant operational challenge for food service operators is defining energy use benchmark metrics to compare against the performance of individual stores. Without metrics, multiunit operators and managers have difficulty identifying which stores in their portfolios require extra attention to bring their energy performance in line with expectations. This report presents a method whereby multiunit operators may use their own utility data to create suitable metrics for evaluating their operations.

Hedrick, R.; Smith, V.; Field, K.

2011-07-01T23:59:59.000Z

165

INTEGRAL BENCHMARKS AVAILABLE THROUGH THE INTERNATIONAL REACTOR PHYSICS EXPERIMENT EVALUATION PROJECT AND THE INTERNATIONAL CRITICALITY SAFETY BENCHMARK EVALUATION PROJECT  

SciTech Connect

Interest in high-quality integral benchmark data is increasing as efforts to quantify and reduce calculational uncertainties accelerate to meet the demands of next generation reactor and advanced fuel cycle concepts. The International Reactor Physics Experiment Evaluation Project (IRPhEP) and the International Criticality Safety Benchmark Evaluation Project (ICSBEP) continue to expand their efforts and broaden their scope to identify, evaluate, and provide integral benchmark data for method and data validation. Benchmark model specifications provided by these two projects are used heavily by the international reactor physics, nuclear data, and criticality safety communities. Thus far, 14 countries have contributed to the IRPhEP, and 20 have contributed to the ICSBEP. The status of the IRPhEP and ICSBEP is discussed in this paper, and the future of the two projects is outlined and discussed. Selected benchmarks that have been added to the IRPhEP and ICSBEP handbooks since PHYSOR’06 are highlighted, and the future of the two projects is discussed.

J. Blair Briggs; Lori Scott; Enrico Sartori; Yolanda Rugama

2008-09-01T23:59:59.000Z

166

Evaluation of atmospheric transport models for use in Phase II of the historical public exposures studies at the Rocky Flats Plant  

Science Conference Proceedings (OSTI)

Five atmospheric transport models were evaluated for use in Phase II of the Historical Public Exposures Studies at the Rocky Flats Plant. Models included a simple straight-line Gaussian plume model (ISCST2), several integrated puff models (RATCHET, TRIAD, and INPUFF2), and a complex terrain model (TRAC). Evaluations were based on how well model predictions compared with sulfur hexafluoride tracer measurements taken in the vicinity of Rocky Flats in February 1991. Twelve separate tracer experiments were conducted, each lasting 9 hr and measured at 140 samplers in arcs 8 and 16 km from the release point at Rocky Flats. Four modeling objectives were defined based on the endpoints of the overall study: (1) the unpaired maximum hourly average concentration, (2) paired time-averaged concentration, (3) unpaired time-averaged concentration, and (4) arc-integrated concentration. Performance measures were used to evaluate models and focused on the geometric mean and standard deviation of the predicted-to-observed ratio and the correlation coefficient between predicted and observed concentrations. No one model consistently outperformed the others in all modeling objectives and performance measures. The overall performance of the RATCHET model was somewhat better than the other models.

Rood, A.S.; Killough, G.G.; Till, J.E.

1999-08-01T23:59:59.000Z

167

Advanced Benchmarking for Complex Building Types: Laboratories as an Exemplar  

SciTech Connect

Complex buildings such as laboratories, data centers and cleanrooms present particular challenges for energy benchmarking because it is difficult to normalize special requirements such as health and safety in laboratories and reliability (i.e., system redundancy to maintain uptime) in data centers which significantly impact energy use. For example, air change requirements vary widely based on the type of work being performed in each laboratory space. We present methods and tools for energy benchmarking in laboratories, as an exemplar of a complex building type. First, we address whole building energy metrics and normalization parameters. We present empirical methods based on simple data filtering as well as multivariate regression analysis on the Labs21 database. The regression analysis showed lab type, lab-area ratio and occupancy hours to be significant variables. Yet the dataset did not allow analysis of factors such as plug loads and air change rates, both of which are critical to lab energy use. The simulation-based method uses an EnergyPlus model to generate a benchmark energy intensity normalized for a wider range of parameters. We suggest that both these methods have complementary strengths and limitations. Second, we present"action-oriented" benchmarking, which extends whole-building benchmarking by utilizing system-level features and metrics such as airflow W/cfm to quickly identify a list of potential efficiency actions which can then be used as the basis for a more detailed audit. While action-oriented benchmarking is not an"audit in a box" and is not intended to provide the same degree of accuracy afforded by an energy audit, we demonstrate how it can be used to focus and prioritize audit activity and track performance at the system level. We conclude with key principles that are more broadly applicable to other complex building types.

Mathew, Paul A.; Clear, Robert; Kircher, Kevin; Webster, Tom; Lee, Kwang Ho; Hoyt, Tyler

2010-08-01T23:59:59.000Z

168

benchmarks  

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

Profile for Selected PCBs, ATSDRTP-8821, U.S. Public Health Service, Washington, D.C. Boese, B. L., H. Lee II, D. T. Specht, R. C. Randall, and M. H. Winsor 1990....

169

Benchmark precision and random initial state  

E-Print Network (OSTI)

The applications of software benchmarks place an obvious demand on the precision of the benchmark results. An intuitive and frequently employed approach to obtaining precise enough benchmark results is having the benchmark collect a large number of samples that are simply averaged or otherwise statistically processed. We show that this approach ignores an inherent and unavoidable nondeterminism in the initial state of the system that is evaluated, often leading to an implausible estimate of result precision. We proceed by outlining the sources of nondeterminism in a typical system, illustrating the impact of the nondeterminism on selected classes of benchmarks. Finally, we suggest a method for quantitatively assessing the influence of nondeterminism on a benchmark, as well as approach that provides a plausible estimate of result precision in face of the nondeterminism.

Tomas Kalibera; Lubomir Bulej; Petr Tuma

2005-01-01T23:59:59.000Z

170

Factors Causing Unexpected Variations in Ada Benchmarks  

E-Print Network (OSTI)

Benchmarks are often used to describe the performance of computer systems. This report considers factors that may cause Ada benchmarks to produce inaccurate results. Included are examples from the ongoing benchmarking efforts of the Ada Embedded Systems Testbed (AEST) Project using bare target computers with several Ada compilers. 1. Introduction One of the goals of the Ada Embedded Systems Testbed (AEST) Project is to assess the readiness of the Ada programming language and Ada tools for developing embedded systems. The benchmarking and instrumentation subgroup within the AEST Project is running various suites of Ada benchmarks to obtain data on the real-time performance of Ada on a number of different target systems. The purpose of this report is to categorize the factors which cause anomalous results to be produced by the benchmarks. Some of these factors have been observed, while others are more speculative in nature. All these factors should be understood if accurate, comparable,...

Neal Altman; Neal Altman

1987-01-01T23:59:59.000Z

171

MCNP/KENO criticality benchmarks  

SciTech Connect

In the past, criticality safety analyses related to the handling and storage of fissile materials were obtained from critical experiments, nuclear safety guides, and handbooks. As a result of rising costs and time delays associated with critical experiments, most experimental facilities have been closed, triggering an increased reliance on computational methods. With this reliance comes the need and requirement for redundant validation by independent criticality codes. Currently, the KENO Monte Carlo transport code is the most widely used tool for criticality safety calculations. For other transport codes, such as MCNP, to be accepted by the criticality safety community as a redundant validation tool they must be able to reproduce experimental results at least as well as KENO. The Monte Carlo neutron, photon, and electron transport code MCNP, has an extensive list of attractive features, including continuous energy cross sections, generalized 3-D geometry, time dependent transport, criticality k{sub eff} calculations, and comprehensive source and tally capabilities. It is widely used for nuclear criticality analysis, nuclear reactor shielding, oil well logging, and medical dosimetry calculations. This report specifically addresses criticality and benchmarks the KENO 25 problem test set. These sample problems constitute the KENO standard benchmark set and represent a relatively wide variety of criticality problems. The KENO Monte Carlo code was chosen because of its extensive benchmarking against analytical and experimental criticality results. Whereas the uncertainty in experimental parameters generally prohibits code validation to better than about 1% in k{sub eff}, the value of k{sub eff} for criticality is considered unacceptable if it deviates more than a few percent from measurements.

McKinney, G.W. [Los Alamos National Lab., NM (United States); Wagner, J.C. [Pennsylvania State Univ., University Park, PA (United States); Sisolak, J.E. [Wisconsin Univ., Madison, WI (United States)

1993-04-01T23:59:59.000Z

172

Assessment of Applying the PMaC Prediction Framework to NERSC-5 SSP Benchmarks  

Science Conference Proceedings (OSTI)

NERSC procurement depends on application benchmarks, in particular the NERSC SSP. Machine vendors are asked to run SSP benchmarks at various scales to enable NERSC to assess system performance. However, it is often the case that the vendor cannot run the benchmarks at large concurrency as it is impractical to have that much hardware available. Additionally, there may be difficulties in porting the benchmarks to the hardware. The Performance Modeling and Characterization Lab (PMaC) at San Diego Supercomputing Center (SDSC) have developed a framework to predict the performance of codes on large parallel machines. The goal of this work was to apply the PMaC prediction framework to the NERSC-5 SSP benchmark applications and ultimately consider the accuracy of the predictions. Other tasks included identifying assumptions and simplifications in the process, determining the ease of use, and measuring the resources required to obtain predictions.

Keen, Noel

2006-09-30T23:59:59.000Z

173

Optimization Online - Benchmark of Some Nonsmooth Optimization ...  

E-Print Network (OSTI)

Mar 1, 2006 ... Benchmark of Some Nonsmooth Optimization Solvers for Computing Nonconvex Proximal Points. Warren Hare (whare ***at*** cecm.sfu.ca)

174

Benchmarking optimization software with performance profiles  

E-Print Network (OSTI)

Mar 15, 2001 ... Abstract: We propose performance profiles -- probability distribution functions for a performance metric -- as a tool for benchmarking and ...

175

2000 TMS Annual Meeting Exhibitor: BENCHMARK STRUCTURAL  

Science Conference Proceedings (OSTI)

Benchmark Structural Ceramics Corp., has substituted the use of sintered silicon nitride and sialon parts utilized in molten aluminum handling and service with ...

176

Measurement Technology for Benchmark Spray Combustion ...  

Science Conference Proceedings (OSTI)

Benchmark Spray Combustion Database. ... A1, uncertainty budget for the fuel flow rate. A2, uncertainty budget for the combustion air flow rate. ...

2013-07-15T23:59:59.000Z

177

Method and system for benchmarking computers  

DOE Patents (OSTI)

A testing system and method for benchmarking computer systems. The system includes a store containing a scalable set of tasks to be performed to produce a solution in ever-increasing degrees of resolution as a larger number of the tasks are performed. A timing and control module allots to each computer a fixed benchmarking interval in which to perform the stored tasks. Means are provided for determining, after completion of the benchmarking interval, the degree of progress through the scalable set of tasks and for producing a benchmarking rating relating to the degree of progress for each computer.

Gustafson, John L. (Ames, IA)

1993-09-14T23:59:59.000Z

178

Measure, track, and benchmark | ENERGY STAR  

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

tracking and benchmarking of energy across all operations are your most powerful energy waste reduction tools. Reducing energy waste requires that all forms of energy be...

179

Performance Evaluation and Benchmarking of Intelligent ...  

Science Conference Proceedings (OSTI)

Performance Evaluation and Benchmarking of Intelligent Systems Book. 2009, XIX, 338 p., Hardcover ISBN: 978-1-4419-0491-1 ... About this book: ...

2010-12-20T23:59:59.000Z

180

Quantum benchmarking with realistic states of light  

E-Print Network (OSTI)

The goal of quantum benchmarking is to certify that imperfect quantum communication devices (e.g., quantum channels, quantum memories, quantum key distribution systems) can still be used for meaningful quantum communication. However, the test states used in quantum benchmarking experiments may be imperfect as well. Many quantum benchmarks are only valid for states which match some ideal form, such as pure states or Gaussian states. We outline how to perform quantum benchmarking using arbitrary states of light. These results are used to certify a continuous variable quantum memory by showing that it has the ability to preserve entanglement.

Killoran, Nathan; Buchler, Ben C; Lam, Ping Koy; Lütkenhaus, Norbert

2012-01-01T23:59:59.000Z

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


181

A Benchmark Study on Casting Residual Stress  

Science Conference Proceedings (OSTI)

Stringent regulatory requirements, such as Tier IV norms, have pushed the cast iron for automotive applications to its limit. The castings need to be designed with closer tolerances by incorporating hitherto unknowns, such as residual stresses arising due to thermal gradients, phase and microstructural changes during solidification phenomenon. Residual stresses were earlier neglected in the casting designs by incorporating large factors of safety. Experimental measurement of residual stress in a casting through neutron or X-ray diffraction, sectioning or hole drilling, magnetic, electric or photoelastic measurements is very difficult and time consuming exercise. A detailed multi-physics model, incorporating thermo-mechanical and phase transformation phenomenon, provides an attractive alternative to assess the residual stresses generated during casting. However, before relying on the simulation methodology, it is important to rigorously validate the prediction capability by comparing it to experimental measurements. In the present work, a benchmark study was undertaken for casting residual stress measurements through neutron diffraction, which was subsequently used to validate the accuracy of simulation prediction. The stress lattice specimen geometry was designed such that subsequent castings would generate adequate residual stresses during solidification and cooling, without any cracks. The residual stresses in the cast specimen were measured using neutron diffraction. Considering the difficulty in accessing the neutron diffraction facility, these measurements can be considered as benchmark for casting simulation validations. Simulations were performed using the identical specimen geometry and casting conditions for predictions of residual stresses. The simulation predictions were found to agree well with the experimentally measured residual stresses. The experimentally validated model can be subsequently used to predict residual stresses in different cast components. This enables incorporation of the residual stresses at the design phase along with external loads for accurate predictions of fatigue and fracture performance of the cast components.

Johnson, Eric M. [John Deere -- Moline Tech Center; Watkins, Thomas R [ORNL; Schmidlin, Joshua E [ORNL; Dutler, S. A. [MAGMA Foundry Technologies, Inc.

2012-01-01T23:59:59.000Z

182

Randomized Benchmarking of Quantum Gates  

E-Print Network (OSTI)

A key requirement for scalable quantum computing is that elementary quantum gates can be implemented with sufficiently low error. One method for determining the error behavior of a gate implementation is to perform process tomography. However, standard process tomography is limited by errors in state preparation, measurement and one-qubit gates. It suffers from inefficient scaling with number of qubits and does not detect adverse error-compounding when gates are composed in long sequences. An additional problem is due to the fact that desirable error probabilities for scalable quantum computing are of the order of 0.0001 or lower. Experimentally proving such low errors is challenging. We describe a randomized benchmarking method that yields estimates of the computationally relevant errors without relying on accurate state preparation and measurement. Since it involves long sequences of randomly chosen gates, it also verifies that error behavior is stable when used in long computations. We implemented randomized benchmarking on trapped atomic ion qubits, establishing a one-qubit error probability per randomized pi/2 pulse of 0.00482(17) in a particular experiment. We expect this error probability to be readily improved with straightforward technical modifications.

E. Knill; D. Leibfried; R. Reichle; J. Britton; R. B. Blakestad; J. D. Jost; C. Langer; R. Ozeri; S. Seidelin; D. J. Wineland

2007-07-06T23:59:59.000Z

183

Multipole Analysis of a Benchmark Data Set for Pion Photoproduction  

E-Print Network (OSTI)

We have fitted low- and medium-energy benchmark datasets employing methods used in the MAID/SAID and dynamical model analyses. Independent fits from the Mainz, RPI, Yerevan, and Kharkov groups have also been performed over the low-energy region. Results for the multipole amplitudes are compared in order to gauge the model-dependence of such fits, given identical data and a single method for error handling.

R. A. Arndt; I. Aznauryan; R. M. Davidson; D. Drechsel; O. Hanstein; S. S. Kamalov; A. S. Omelaenko; I. Strakovsky; L. Tiator; R. L. Workman; S. N. Yang

2001-06-25T23:59:59.000Z

184

An Empirical Benchmark for Decadal Forecasts of Global Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The suitability of a linear inverse model (LIM) as a benchmark for decadal surface temperature forecast skill is demonstrated. Constructed from the observed simultaneous and 1-yr lag covariability statistics of annually averaged sea surface ...

Matthew Newman

2013-07-01T23:59:59.000Z

185

ANS Nuclear Historic Landmark  

Science Conference Proceedings (OSTI)

... NCNR declared a Nuclear Historic Landmark by the American Nuclear Society. The NIST Center for Neutron Research ...

186

Review of California and National Methods for Energy PerformanceBenchmarking of Commercial Buildings  

SciTech Connect

This benchmarking review has been developed to support benchmarking planning and tool development under discussion by the California Energy Commission (CEC), Lawrence Berkeley National Laboratory (LBNL) and others in response to the Governor's Executive Order S-20-04 (2004). The Executive Order sets a goal of benchmarking and improving the energy efficiency of California's existing commercial building stock. The Executive Order requires the CEC to propose ''a simple building efficiency benchmarking system for all commercial buildings in the state''. This report summarizes and compares two currently available commercial building energy-benchmarking tools. One tool is the U.S. Environmental Protection Agency's Energy Star National Energy Performance Rating System, which is a national regression-based benchmarking model (referred to in this report as Energy Star). The second is Lawrence Berkeley National Laboratory's Cal-Arch, which is a California-based distributional model (referred to as Cal-Arch). Prior to the time Cal-Arch was developed in 2002, there were several other benchmarking tools available to California consumers but none that were based solely on California data. The Energy Star and Cal-Arch benchmarking tools both provide California with unique and useful methods to benchmark the energy performance of California's buildings. Rather than determine which model is ''better'', the purpose of this report is to understand and compare the underlying data, information systems, assumptions, and outcomes of each model.

Matson, Nance E.; Piette, Mary Ann

2005-09-05T23:59:59.000Z

187

Metrics and Benchmarks for Energy Efficiency in Laboratories  

E-Print Network (OSTI)

2004 pro- vide an additional benchmark. F O R T H E Table 3.Performance Metrics & Benchmarks Notes A performance MetricBTU/sf-yr). A performance Benchmark is a particular value of

Mathew, Paul

2007-01-01T23:59:59.000Z

188

Memory-intensive benchmarks: IRAM vs. cache-based machines  

E-Print Network (OSTI)

the Stressmarks of the DIS Benchmark Project, v 1.0, TitanB. R. Gaeke, “GUPS Benchmark Manual,” Univ. of California,be indispensable to re-run our benchmarks on the real VIRAM

2001-01-01T23:59:59.000Z

189

Metrics and Benchmarks for Energy Efficiency in Laboratories  

E-Print Network (OSTI)

energy efficiency metrics and benchmarks for laboratories, at the whole buildingBuilding Site Energy BTU/sf-yr). A performance Benchmark isBenchmarks Good Practice ID Building B1 Name Unit Building Site Energy

Mathew, Paul

2007-01-01T23:59:59.000Z

190

Development of a Computer-based Benchmarking and Analytical Tool...  

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

a Computer-based Benchmarking and Analytical Tool: Benchmarking and Energy & Water Savings Tool in Dairy Plants (BEST-Dairy) Title Development of a Computer-based Benchmarking and...

191

MDAbench: A Tool for Customized Benchmark Generation Using MDA  

E-Print Network (OSTI)

Designing component-based application that meets performance requirements remains a challenging problem, and usually requires a prototype to be constructed to benchmark performance. Building a custom benchmark suite is however costly and tedious. This demonstration illustrates an approach for generating customized component-based benchmark applications using a Model Driven Architecture (MDA) approach. All the platform related plumbing and basic performance testing routines are encapsulated in MDA generation "cartridges" along with default implementations of testing logic. We will show how to use a tailored version of the UML 2.0 Testing Profile to model a customized load testing client. The performance configuration (such as transaction mix and spiking simulations) can also be modeled using the UML model. Executing the generated deployable code will collect the performance testing data automatically. The tool implementation is based on a widely used open source MDA framework AndroMDA. We extended it by providing a cartridge for a performance testing tailored version of the UML 2.0 Testing Profile. Essentially, we use OObased meta-modeling in designing and implementing a lightweight performance testing domain specific language with supporting infrastructure on top of the existing UML testing standard.

Liming Zhu; Yan Liu; Ian Gorton; Ngoc Bao Bui

2005-01-01T23:59:59.000Z

192

ASHRAE Cleanroom Benchmarking Paper - REVISED  

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

8E 8E Cleanroom Energy Efficiency: Metrics and Benchmarking Paul Mathew, William Tschudi, Dale Sartor Lawrence Berkeley National Laboratory James Beasley International SEMATECH Manufacturing Initiative October 2010 Published in ASHRAE Journal, v. 53, issue 10 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe

193

Historical Natural Gas Annual  

Gasoline and Diesel Fuel Update (EIA)

8 8 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at selected points in the flow of gas from the wellhead to the burner-tip. Data include production, transmission within the United States, imports and exports of natural gas, underground storage activities, and deliveries to consumers. The publication presents historical data at the national level for 1930-1998 and detailed annual historical information by State for 1967-1998. The Historical Natural Gas Annual tables are available as self-extracting executable files in ASCII TXT or CDF file formats. Tables 1-3 present annual historical data at the national level for 1930-1998. The remaining tables contain detailed annual historical information, by State, for 1967-1998. Please read the file entitled READMEV2 for a description and documentation of information included in this file.

194

Historical Natural Gas Annual  

Gasoline and Diesel Fuel Update (EIA)

6 6 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at selected points in the flow of gas from the wellhead to the burner-tip. Data include production, transmission within the United States, imports and exports of natural gas, underground storage activities, and deliveries to consumers. The publication presents historical data at the national level for 1930-1996 and detailed annual historical information by State for 1967-1996. The Historical Natural Gas Annual tables are available as self-extracting executable files in ASCII TXT or CDF file formats. Tables 1-3 present annual historical data at the national level for 1930-1996. The remaining tables contain detailed annual historical information, by State, for 1967-1996. Please read the file entitled READMEV2 for a description and documentation of information included in this file.

195

Historical Natural Gas Annual  

Gasoline and Diesel Fuel Update (EIA)

7 7 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at selected points in the flow of gas from the wellhead to the burner-tip. Data include production, transmission within the United States, imports and exports of natural gas, underground storage activities, and deliveries to consumers. The publication presents historical data at the national level for 1930-1997 and detailed annual historical information by State for 1967-1997. The Historical Natural Gas Annual tables are available as self-extracting executable files in ASCII TXT or CDF file formats. Tables 1-3 present annual historical data at the national level for 1930-1997. The remaining tables contain detailed annual historical information, by State, for 1967-1997. Please read the file entitled READMEV2 for a description and documentation of information included in this file.

196

An Independent Benchmarking of SDP and SOCP Solvers  

E-Print Network (OSTI)

The codes were run on a standard platform and on all the benchmark ... tabulated and commented benchmarking results this provides an overview of the state of ...

197

Fairer Benchmarking of Optimization Algorithms via Derivative Free ...  

E-Print Network (OSTI)

Oct 13, 2010 ... Some benchmarking is done as a proof-of-concept, ... amine an issue that arise during benchmarking and discuss a technique that can help ...

198

On-chip Benchmarking and Calibration without External References  

E-Print Network (OSTI)

the target component. A benchmark value is calculated based11  3.4 Calibration using Benchmarkthe target component. A benchmark value is calculated based

Lee, Cheol-Woong

2011-01-01T23:59:59.000Z

199

Energy-Efficiency Technologies and Benchmarking the Energy Intensity...  

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

Energy-Efficiency Technologies and Benchmarking the Energy Intensity for the Textile Industry Title Energy-Efficiency Technologies and Benchmarking the Energy Intensity for the...

200

Building Energy Benchmarking between the United States and China...  

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

Energy Benchmarking between the United States and China: Methods and Challenges Title Building Energy Benchmarking between the United States and China: Methods and Challenges...

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


201

Preliminary Benchmark Evaluation of Japan’s High Temperature Engineering Test Reactor  

SciTech Connect

A benchmark model of the initial fully-loaded start-up core critical of Japan’s High Temperature Engineering Test Reactor (HTTR) was developed to provide data in support of ongoing validation efforts of the Very High Temperature Reactor Program using publicly available resources. The HTTR is a 30 MWt test reactor utilizing graphite moderation, helium coolant, and prismatic TRISO fuel. The benchmark was modeled using MCNP5 with various neutron cross-section libraries. An uncertainty evaluation was performed by perturbing the benchmark model and comparing the resultant eigenvalues. The calculated eigenvalues are approximately 2-3% greater than expected with an uncertainty of ±0.70%. The primary sources of uncertainty are the impurities in the core and reflector graphite. The release of additional HTTR data could effectively reduce the benchmark model uncertainties and bias. Sensitivity of the results to the graphite impurity content might imply that further evaluation of the graphite content could significantly improve calculated results. Proper characterization of graphite for future Next Generation Nuclear Power reactor designs will improve computational modeling capabilities. Current benchmarking activities include evaluation of the annular HTTR cores and assessment of the remaining start-up core physics experiments, including reactivity effects, reactivity coefficient, and reaction-rate distribution measurements. Long term benchmarking goals might include analyses of the hot zero-power critical, rise-to-power tests, and other irradiation, safety, and technical evaluations performed with the HTTR.

John Darrell Bess

2009-05-01T23:59:59.000Z

202

Benchmark calculations for electron collisions with zinc atoms  

SciTech Connect

We present results from R-matrix (close-coupling) calculations for elastic scattering and electron impact excitation of Zn. The overall agreement between the predictions from two independent models, using either a semiempirical core potential or a recently developed B-spline approach with nonorthogonal orbitals, is very satisfactory. The latter method, however, yields particularly good agreement with the few existing experimental benchmark data for resonances at low incident energies.

Zatsarinny, Oleg; Bartschat, Klaus [Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States)

2005-02-01T23:59:59.000Z

203

Benchmark Evaluation of Plutonium Nitrate Solution Arrays  

Science Conference Proceedings (OSTI)

In October and November of 1981 thirteen approach-to-critical experiments were performed on a remote split table machine (RSTM) in the Critical Mass Laboratory of Pacific Northwest Laboratory (PNL) in Richland, Washington, using planar arrays of polyethylene bottles filled with plutonium (Pu) nitrate solution. Arrays of up to sixteen bottles were used to measure the critical number of bottles and critical array spacing with a tight fitting Plexiglas{reg_sign} reflector on all sides of the arrays except the top. Some experiments used Plexiglas shells fitted around each bottles to determine the effect of moderation on criticality. Each bottle contained approximately 2.4 L of Pu(NO3)4 solution with a Pu content of 105 g Pu/L and a free acid molarity H+ of 5.1. The plutonium was of low 240Pu (2.9 wt.%) content. These experiments were performed to fill a gap in experimental data regarding criticality limits for storing and handling arrays of Pu solution in reprocessing facilities. Of the thirteen approach-to-critical experiments eleven resulted in extrapolations to critical configurations. Four of the approaches were extrapolated to the critical number of bottles; these were not evaluated further due to the large uncertainty associated with the modeling of a fraction of a bottle. The remaining seven approaches were extrapolated to critical array spacing of 3-4 and 4-4 arrays; these seven critical configurations were evaluation for inclusion as acceptable benchmark experiments in the International Criticality Safety Benchmark Evaluation Project (ICSBEP) Handbook. Detailed and simple models of these configurations were created and the associated bias of these simplifications was determined to range from 0.00116 and 0.00162 {+-} 0.00006 ?keff. Monte Carlo analysis of all models was completed using MCNP5 with ENDF/BVII.0 neutron cross section libraries. A thorough uncertainty analysis of all critical, geometric, and material parameters was performed using parameter perturbation methods. It was found that uncertainty in the impurities in the polyethylene bottles, reflector position, bottle outer diameter, and critical array spacing had the largest effect. The total uncertainty ranged from 0.00651 to 0.00920 ?keff. Evaluation methods and results will be presented and discussed in greater detail in the full paper.

M. A. Marshall; J. D. Bess

2011-09-01T23:59:59.000Z

204

historic site award  

Science Conference Proceedings (OSTI)

... Honors 'Historic Site' of NBS Physics Discovery. ... The American Physical Society (APS) has named ... revealed that in certain nuclear processes pairs ...

2011-11-16T23:59:59.000Z

205

ARM - Historical Visitor Statistics  

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

and Usage (October 1995 - Present) Historical Visitor Statistics As a national user facility, ARM is required to report facility use for actual visitors and for active user...

206

Benefits of the delta K of depletion benchmarks for burnup credit validation  

SciTech Connect

Pressurized Water Reactor (PWR) burnup credit validation is demonstrated using the benchmarks for quantifying fuel reactivity decrements, published as 'Benchmarks for Quantifying Fuel Reactivity Depletion Uncertainty,' EPRI Report 1022909 (August 2011). This demonstration uses the depletion module TRITON available in the SCALE 6.1 code system followed by criticality calculations using KENO-Va. The difference between the predicted depletion reactivity and the benchmark's depletion reactivity is a bias for the criticality calculations. The uncertainty in the benchmarks is the depletion reactivity uncertainty. This depletion bias and uncertainty is used with the bias and uncertainty from fresh UO{sub 2} critical experiments to determine the criticality safety limits on the neutron multiplication factor, k{sub eff}. The analysis shows that SCALE 6.1 with the ENDF/B-VII 238-group cross section library supports the use of a depletion bias of only 0.0015 in delta k if cooling is ignored and 0.0025 if cooling is credited. The uncertainty in the depletion bias is 0.0064. Reliance on the ENDF/B V cross section library produces much larger disagreement with the benchmarks. The analysis covers numerous combinations of depletion and criticality options. In all cases, the historical uncertainty of 5% of the delta k of depletion ('Kopp memo') was shown to be conservative for fuel with more than 30 GWD/MTU burnup. Since this historically assumed burnup uncertainty is not a function of burnup, the Kopp memo's recommended bias and uncertainty may be exceeded at low burnups, but its absolute magnitude is small. (authors)

Lancaster, D. [NuclearConsultants.com, 187 Faith Circle, Boalsburg, PA 16827 (United States); Machiels, A. [Electric Power Research Inst., Inc., 3420 Hillview Avenue, Palo Alto, CA 94304 (United States)

2012-07-01T23:59:59.000Z

207

DataTrends Energy Use Benchmarking  

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

Benchmarking Benchmarking The U.S. Environmental Protection Agency's (EPA) ENERGY STAR Portfolio Manager is changing the way organizations track and manage energy. As of December 2011, organizations have used Portfolio Manager to track and manage the energy use of over 260,000 buildings across all 50 states, representing over 28 billion square feet (nearly 40% of the commercial market). Because of this widespread market adoption, EPA has prepared the DataTrends series to examine benchmarking and trends in energy and water consumption in Portfolio Manager. To learn more, visit www.energystar.gov/DataTrends. Many different types of organizations use Portfolio Manager to benchmark the energy use of their buildings. Office, K-12

208

Benchmark the Fuel Cost of Steam Generation  

SciTech Connect

This revised ITP tip sheet on benchmarking the fuel cost of steam provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

2006-01-01T23:59:59.000Z

209

Benchmarking autonomic capabilities: Promises and pitfalls  

E-Print Network (OSTI)

Benchmarks provide a way to quantify progress in a field. Excellent examples of this are the dramatic improvements in processor speeds and middleware performance over the last decade, driven in part by SPEC ®

Aaron B. Brown; Joseph Hellerstein; Matt Hogstrom; Tony Lau; Sam Lightstone; Peter Shum; Mary Peterson Yost

2004-01-01T23:59:59.000Z

210

Action-Oriented Benchmarking: Concepts and Tools  

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

opportunity assessment process can then be used to inform and optimize a full-scale audit or commissioning process. We introduce a new web-based action-oriented benchmarking...

211

Physics Benchmarks for the ILC Detectors  

E-Print Network (OSTI)

This note presents a list of physics processes for benchmarking the performance of proposed ILC detectors. This list gives broad coverage of the required physics capabilities of the ILC experiments and suggests target accuracies to be achieved. A reduced list of reactions, which capture within a very economical set the main challenges put by the ILC physics program, is suggested for the early stage of benchmarking of the detector concepts.

M. Battaglia; T. Barklow; M. Peskin; Y. Okada; S. Yamashita; P. Zerwas

2006-03-06T23:59:59.000Z

212

Hospital Energy Benchmarking Guidance - Version 1.0  

E-Print Network (OSTI)

energy conversion is provided in the documentation for the Energy Star facility-level benchmarking system

Singer, Brett C.

2010-01-01T23:59:59.000Z

213

LUBM: A benchmark for OWL knowledge base systems  

Science Conference Proceedings (OSTI)

We describe our method for benchmarking Semantic Web knowledge base systems with respect to use in large OWL applications. We present the Lehigh University Benchmark (LUBM) as an example of how to design such benchmarks. The LUBM features an ontology ... Keywords: Evaluation, Knowledge base system, Lehigh University Benchmark, Semantic Web

Yuanbo Guo; Zhengxiang Pan; Jeff Heflin

2005-10-01T23:59:59.000Z

214

CASMO-3/SIMULATE-3 benchmarking against Vermont Yankee  

Science Conference Proceedings (OSTI)

The cross-section generation code CASMO-3 and the advanced nodal code SIMULATE-3 are used to model Vermont Yankee (VY) cycles 9 through 13. Vermont Yankee is a small, high-power density boiling water reactor (BWR)-3 reactor. Cycles 9 through 13 were chosen for benchmarking because they have high-enrichment cores and use gamma-sensing traversing in-core probes (TIPs). To judge the merit of the new CASMO-3/SIMULATE-3 model, the results are compared to the old CASMO-2/SIMULATE-2 model. The figures of merit are consistent hot and cold eigenvalues near 1.0 and accurate reproduction of the plant TIP readings.

Hubbard, B.Y.; Morin, D.J.; Pappas, J.; Potter, R.C.; Woehlke, R.A. (Yankee Atomic Electric Co., Bolton, MA (USA))

1989-11-01T23:59:59.000Z

215

CFD Model for Prediction of Liquid Steel Temperature in Ladle ...  

Science Conference Proceedings (OSTI)

2D and 3D Numerical Modeling of Solidification Benchmark of Sn-3% Pb Wt. Alloy under ... 3D CAFE Simulation of a Macrosegregation Benchmark Experiment.

216

Historical Perspective on How and Why Switchgrass was Selected as a "Model" High-Potential Energy Crop  

Science Conference Proceedings (OSTI)

A review of several publications of the Biofuels Feedstock Development Program, and final reports from the herbaceous crop screening trials suggests that there were several technical and non-technical factors that influenced the decision to focus on one herbaceous "model" crop species. The screening trials funded by the U.S. Department of Energy in the late 1980's to early 1990's assessed a wide range of about 34 species with trials being conducted on a wide range of soil types in 31 different sites spread over seven states in crop producing regions of the U.S. While several species, including sorghums, reed canarygrass and other crops, were identified as having merit for further development, the majority of institutions involved in the herbaceous species screening studies identified switchgrass as having high priority for further development. Six of the seven institutions included switchgrass among the species recommended for further development in their region and all institutions recommended that perennial grasses be given high research priority. Reasons for the selection of switchgrass included the demonstration of relatively high, reliable productivity across a wide geographical range, suitability for marginal quality land, low water and nutrient requirements, and positive environmental attributes. Economic and environmental assessments by Oak Ridge National Laboratory's Biofuels Feedstock Development Program staff together with the screening project results, and funding limitations lead to making the decision to further develop only switchgrass as a "model" or "prototype" species in about 1990. This paper describes the conditions under which the herbaceous species were screened, summarizes results from those trials, discusses the various factors which influenced the selection of switchgrass, and provides a brief evaluation of switchgrass with respect to criteria that should be considered when selecting and developing a crop for biofuels and bioproducts.

Wright, Lynn L [ORNL

2007-11-01T23:59:59.000Z

217

Storage-Intensive Supercomputing Benchmark Study  

SciTech Connect

Critical data science applications requiring frequent access to storage perform poorly on today's computing architectures. This project addresses efficient computation of data-intensive problems in national security and basic science by exploring, advancing, and applying a new form of computing called storage-intensive supercomputing (SISC). Our goal is to enable applications that simply cannot run on current systems, and, for a broad range of data-intensive problems, to deliver an order of magnitude improvement in price/performance over today's data-intensive architectures. This technical report documents much of the work done under LDRD 07-ERD-063 Storage Intensive Supercomputing during the period 05/07-09/07. The following chapters describe: (1) a new file I/O monitoring tool iotrace developed to capture the dynamic I/O profiles of Linux processes; (2) an out-of-core graph benchmark for level-set expansion of scale-free graphs; (3) an entity extraction benchmark consisting of a pipeline of eight components; and (4) an image resampling benchmark drawn from the SWarp program in the LSST data processing pipeline. The performance of the graph and entity extraction benchmarks was measured in three different scenarios: data sets residing on the NFS file server and accessed over the network; data sets stored on local disk; and data sets stored on the Fusion I/O parallel NAND Flash array. The image resampling benchmark compared performance of software-only to GPU-accelerated. In addition to the work reported here, an additional text processing application was developed that used an FPGA to accelerate n-gram profiling for language classification. The n-gram application will be presented at SC07 at the High Performance Reconfigurable Computing Technologies and Applications Workshop. The graph and entity extraction benchmarks were run on a Supermicro server housing the NAND Flash 40GB parallel disk array, the Fusion-io. The Fusion system specs are as follows: SuperMicro X7DBE Xeon Dual Socket Blackford Server Motherboard; 2 Intel Xeon Dual-Core 2.66 GHz processors; 1 GB DDR2 PC2-5300 RAM (2 x 512); 80GB Hard Drive (Seagate SATA II Barracuda). The Fusion board is presently capable of 4X in a PCIe slot. The image resampling benchmark was run on a dual Xeon workstation with NVIDIA graphics card (see Chapter 5 for full specification). An XtremeData Opteron+FPGA was used for the language classification application. We observed that these benchmarks are not uniformly I/O intensive. The only benchmark that showed greater that 50% of the time in I/O was the graph algorithm when it accessed data files over NFS. When local disk was used, the graph benchmark spent at most 40% of its time in I/O. The other benchmarks were CPU dominated. The image resampling benchmark and language classification showed order of magnitude speedup over software by using co-processor technology to offload the CPU-intensive kernels. Our experiments to date suggest that emerging hardware technologies offer significant benefit to boosting the performance of data-intensive algorithms. Using GPU and FPGA co-processors, we were able to improve performance by more than an order of magnitude on the benchmark algorithms, eliminating the processor bottleneck of CPU-bound tasks. Experiments with a prototype solid state nonvolative memory available today show 10X better throughput on random reads than disk, with a 2X speedup on a graph processing benchmark when compared to the use of local SATA disk.

Cohen, J; Dossa, D; Gokhale, M; Hysom, D; May, J; Pearce, R; Yoo, A

2007-10-30T23:59:59.000Z

218

Action-Oriented Benchmarking: Using the CEUS Database to Benchmark Commercial Buildings in California  

SciTech Connect

The 2006 Commercial End Use Survey (CEUS) database developed by the California Energy Commission is a far richer source of energy end-use data for non-residential buildings than has previously been available and opens the possibility of creating new and more powerful energy benchmarking processes and tools. In this article--Part 2 of a two-part series--we describe the methodology and selected results from an action-oriented benchmarking approach using the new CEUS database. This approach goes beyond whole-building energy benchmarking to more advanced end-use and component-level benchmarking that enables users to identify and prioritize specific energy efficiency opportunities - an improvement on benchmarking tools typically in use today.

Mathew, Paul; Mills, Evan; Bourassa, Norman; Brook, Martha

2008-02-01T23:59:59.000Z

219

Change in historic buildings  

E-Print Network (OSTI)

Change in historic buildings is inevitable. If these changes are not well-managed, the cityscape will be threatened because a city is composed of buildings. A good city should combine both growth and preservation. Controlling ...

Yin, Chien-Ni

1992-01-01T23:59:59.000Z

220

Berkeley Lab: historical Perspective  

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

identifies Plutonium: &24;&24; th element on the Periodic Table. Old Town developed for the Manhattan Project fi g u r e 1.7 the historic dome of the 184" cyclotron, now the home of...

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


221

Manhattan Project Historical Resources  

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

The Department of Energy has developed and made available to the public--in print, online, and on display--a variety of Manhattan Project historical resources. These include histories, websites,...

222

MANHATTAN PROJECT HISTORICAL RESOURCES  

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

The Department of Energy has developed and made available to the public--in print, online, and on display--a variety of Manhattan Project historical resources. These include histories, websites,...

223

Historical Natural Gas Annual 1999  

Gasoline and Diesel Fuel Update (EIA)

1999 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

224

Argonne TTRDC - APRF - Research Activities - Benchmarking PHEVs  

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

APRF Research Activities: Benchmarking of Plug-In Hybrid Electric Vehicles (PHEVs) Argonne engineer Mike Duoba Engineer Mike Duoba evaluates a vehicle in Argonne's APRF. Now that plug-in hybrid electric vehicles (PHEVs) are emerging, it is important to test, characterize and benchmark the wide variety of PHEV designs and control strategies. In the APRF, engineers benchmark PHEVs by combining testing and data analysis to characterize the vehicles' efficiency, performance, and emissions. The vehicles are evaluated over many cycles to find control strategies under a variety of operating conditions. Argonne researchers test PHEVs over cold-start and hot-start urban dynamometer driving schedule (UDDS) and highway cycles in both charge-depletion and charge-sustaining operation. Full-charge tests, as

225

Strong quantitative benchmarking of quantum optical devices  

E-Print Network (OSTI)

Quantum communication devices, such as quantum repeaters, quantum memories, or quantum channels, are unavoidably exposed to imperfections. However, the presence of imperfections can be tolerated, as long as we can verify such devices retain their quantum advantages. Benchmarks based on witnessing entanglement have proven useful for verifying the true quantum nature of these devices. The next challenge is to characterize how strongly a device is within the quantum domain. We present a method, based on entanglement measures and rigorous state truncation, which allows us to characterize the degree of quantumness of optical devices. This method serves as a quantitative extension to a large class of previously-known quantum benchmarks, requiring no additional information beyond what is already used for the non-quantitative benchmarks.

Nathan Killoran; Norbert Lütkenhaus

2011-02-16T23:59:59.000Z

226

Towards Scalable Benchmarks for Mass Storage Systems  

E-Print Network (OSTI)

While mass storage systems have been used for several decades to store large quantities of scientific data, there has been little work on devising standard ways of measuring them. Each system is hand-tuned using parameters that seem to work best, but it is difficult to gauge the potential effect of similar changes on other systems. The proliferation of storage management software and policies has made it difficult for users to make the best choices for their own systems. The introduction of benchmarks will make it possible to gather standard performance measurements across disparate systems, allowing users to make intelligent choices of hardware, software, and algorithms for their mass storage system. This paper presents guidelines for the design of a mass storage system benchmark suite, along with preliminary suggestions for programs to be included. The benchmarks will measure both peak and sustained performance of the system as well as predicting both short-term and long-term behav...

Ethan L. Miller

1996-01-01T23:59:59.000Z

227

Strong quantitative benchmarking of quantum optical devices  

Science Conference Proceedings (OSTI)

Quantum communication devices, such as quantum repeaters, quantum memories, or quantum channels, are unavoidably exposed to imperfections. However, the presence of imperfections can be tolerated, as long as we can verify that such devices retain their quantum advantages. Benchmarks based on witnessing entanglement have proven useful for verifying the true quantum nature of these devices. The next challenge is to characterize how strongly a device is within the quantum domain. We present a method, based on entanglement measures and rigorous state truncation, which allows us to characterize the degree of quantumness of optical devices. This method serves as a quantitative extension to a large class of previously known quantum benchmarks, requiring no additional information beyond what is already used for the nonquantitative benchmarks.

Killoran, N.; Luetkenhaus, N. [Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, Waterloo, N2L 3G1 (Canada)

2011-05-15T23:59:59.000Z

228

Post LHC8 SUSY benchmark points for ILC physics  

E-Print Network (OSTI)

We re-evaluate prospects for supersymmetry at the proposed International Linear e^+e^- Collider (ILC) in light of the first two years of serious data taking at LHC: LHC7 with ~5 fb^{-1} of pp collisions at sqrt{s}=7 TeV and LHC8 with ~20 fb^{-1} at \\sqrt{s}=8 TeV. Strong new limits from LHC8 SUSY searches, along with the discovery of a Higgs boson with m_h~125 GeV, suggest a paradigm shift from previously popular models to ones with new and compelling signatures. After a review of the current status of supersymmetry, we present a variety of new ILC benchmark models, including: natural SUSY, radiatively-driven natural SUSY (RNS), NUHM2 with low m_A, a focus point case from mSUGRA/CMSSM, non-universal gaugino mass (NUGM) model, stau-coannihilation, Kallosh-Linde/spread SUSY model, mixed gauge-gravity mediation, normal scalar mass hierarchy (NMH), and one example with the recently discovered Higgs boson being the heavy CP-even state H. While all these models at present elude the latest LHC8 limits, they do offer intriguing case study possibilities for ILC operating at \\sqrt{s}~0.25-1 TeV. The benchmark points also present a view of the widely diverse SUSY phenomena which might still be expected in the post LHC8 era at both LHC and ILC.

Howard Baer; Jenny List

2013-07-02T23:59:59.000Z

229

Performance Benchmarks for I/S in Corporations (1988-1995)  

E-Print Network (OSTI)

ANNUAL REPORT PERFORMANCE BENCHMARKS FOR I/S IN CORPORATTONSIrvine PERFORMANCE BENCHMARKS F O R INFORMATION S Y S T E MIrvine PERFORMANCE BENCHMARKS FOR INFORMATION SYSTEMS IN

Kraemer, Kenneth L.; Dunkle, Debbie

1997-01-01T23:59:59.000Z

230

Performance Benchmarks for I/S in Corporations (1988-1994)  

E-Print Network (OSTI)

ANNUAL REPORT PERFORMANCE BENCHMARKS FOR I/S IN CORPORATIONSIrvine PERFORMANCE BENCHMARKS FOR INFORMATION SYSTEMS INServices PERFORMANCE BENCHMARKS FOR INFORMATION SYSTEMS IN

Kraemer, Kenneth L.; Gurbaxani, Viijay; Vitalari, Nicholas; Dunkle, Debbie

1995-01-01T23:59:59.000Z

231

Assessment of Applying the PMaC Prediction Framework to NERSC-5 SSP Benchmarks  

E-Print Network (OSTI)

Framework to NERSC-5 SSP Benchmarks Summer 2006 Author: Noeldepends on application benchmarks, in particular the NERSCvendors are asked to run SSP benchmarks at various scales to

Keen, Noel

2008-01-01T23:59:59.000Z

232

Science Driven Supercomputing Architectures: Analyzing Architectural Bottlenecks with Applications and Benchmark Probes  

E-Print Network (OSTI)

with Applications and Benchmark Probes The Berkeleydevelopment of adequate benchmarks for identification ofapplication kernels; and 3) Benchmarks to measure key system

2005-01-01T23:59:59.000Z

233

Performance Benchmarks for I/S in Corporations (1990-1999)  

E-Print Network (OSTI)

ANNUAL REPORT PERFORMANCE BENCHMARKS FOR I/S IN CORPORATIONSIrvine PERFORMANCE BENCHMARKS FOR INFORMATION SYSTEMS INiv- PERFORMANCE BENCHMARKS FOR INFORMATION SYSTEMS IN

Kraemer, Kenneth L.; Gurbaxani, Viijay; Dunkle, Debbie

2000-01-01T23:59:59.000Z

234

Benchmarks for new strong interactions at the LHC  

E-Print Network (OSTI)

New strong interactions at the LHC may exhibit a richer structure than expected from simply rescaling QCD to the electroweak scale. In fact, a departure from rescaled QCD is required for compatibility with electroweak constraints. To navigate the space of possible scenarios, we use a simple framework, based on a 5D model with modifications of AdS geometry in the infrared. In the parameter space, we select two points with particularly interesting phenomenology. For these benchmark points, we explore the discovery of triplets of vector and axial resonances at the LHC.

J. Hirn; A. Martin; V. Sanz

2007-12-21T23:59:59.000Z

235

Benchmarking Non-Hardware Balance of System (Soft) Costs for...  

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

Benchmarking Non-Hardware Balance of System (Soft) Costs for U.S. Photovoltaic Systems Using a Data-Driven Analysis from PV Installer Survey Results Title Benchmarking Non-Hardware...

236

Benchmarking Music Information Retrieval Systems Department of Electronic Engineering  

E-Print Network (OSTI)

Benchmarking Music Information Retrieval Systems Josh Reiss Department of Electronic Engineering and effective benchmarking system for music information retrieval (MIR) systems. This will serve the multiple surrounding retrieval of audio in test collections. 1. INTRODUCTION The Music Information Retrieval (MIR

Reiss, Josh

237

A scalability benchmark suite for Erlang/OTP  

Science Conference Proceedings (OSTI)

Programming language implementers rely heavily on benchmarking for measuring and understanding performance of algorithms, architectural designs, and trade-offs between alternative implementations of compilers, runtime systems, and virtual machine components. ... Keywords: benchmarking, erlang, multicore, scalability

Stavros Aronis; Nikolaos Papaspyrou; Katerina Roukounaki; Konstantinos Sagonas; Yiannis Tsiouris; Ioannis E. Venetis

2012-09-01T23:59:59.000Z

238

Energy Star Building Upgrade Manual Benchmarking Chapter 2  

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

Benchmarks and Apply the Results 9 2.4 Summary 12 Bibliography 12 Glossary G-1 ENERGY STAR Building Manual 2 2. Benchmarking 2.1 Overview Businesses are reducing their...

239

Cleanroom Energy Efficiency: Metrics and Benchmarks  

Science Conference Proceedings (OSTI)

Cleanrooms are among the most energy-intensive types of facilities. This is primarily due to the cleanliness requirements that result in high airflow rates and system static pressures, as well as process requirements that result in high cooling loads. Various studies have shown that there is a wide range of cleanroom energy efficiencies and that facility managers may not be aware of how energy efficient their cleanroom facility can be relative to other cleanroom facilities with the same cleanliness requirements. Metrics and benchmarks are an effective way to compare one facility to another and to track the performance of a given facility over time. This article presents the key metrics and benchmarks that facility managers can use to assess, track, and manage their cleanroom energy efficiency or to set energy efficiency targets for new construction. These include system-level metrics such as air change rates, air handling W/cfm, and filter pressure drops. Operational data are presented from over 20 different cleanrooms that were benchmarked with these metrics and that are part of the cleanroom benchmark dataset maintained by Lawrence Berkeley National Laboratory (LBNL). Overall production efficiency metrics for cleanrooms in 28 semiconductor manufacturing facilities in the United States and recorded in the Fabs21 database are also presented.

International SEMATECH Manufacturing Initiative; Mathew, Paul A.; Tschudi, William; Sartor, Dale; Beasley, James

2010-07-07T23:59:59.000Z

240

Comparative Benchmarks of full QCD Algorithms  

E-Print Network (OSTI)

We report performance benchmarks for several algorithms that we have used to simulate the Schr"odinger functional with two flavors of dynamical quarks. They include hybrid and polynomial hybrid Monte Carlo with preconditioning. An appendix describes a method to deal with autocorrelations for nonlinear functions of primary observables as they are met here due to reweighting.

Roberto Frezzotti; Martin Hasenbusch; Jochen Heitger; Karl Jansen; Ulli Wolff

2000-09-20T23:59:59.000Z

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


241

Historical Monthly Energy Review  

Gasoline and Diesel Fuel Update (EIA)

73-92) 73-92) Distribution Category UC-950 Historical Monthly Energy Review 1973-1992 Energy Information Administration Office of Energy Markets and End Use U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Historical Monthly Energy Review The Historical Monthly Energy Review (HMER) presents monthly and annual data from 1973 through 1992 on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international

242

NASA BENCHMARKS COMMUNICATIONS Assessment Plan NNSA/Nevada Site...  

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

Assessment Plan NNSANevada Site Office Facility Representative Division NASA BENCHMARKS COMMUNICATIONS Assessment Plan NNSANevada Site Office Facility Representative...

243

A Numerical Benchmark on the Prediction of Macrosegregation in ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2011 TMS Annual Meeting & Exhibition. Symposium , Frontiers in Solidification Science. Presentation Title, A Numerical Benchmark ...

244

The Problem with the Linpack Benchmark Matrix Generator  

E-Print Network (OSTI)

We characterize the matrix sizes for which the Linpack Benchmark matrix generator constructs a matrix with identical columns.

Dongarra, Jack

2008-01-01T23:59:59.000Z

245

Development of a California commercial building benchmarking database  

E-Print Network (OSTI)

benchmarks while control companies and utilities can provide direct tracking of energy use and combine data from multiple buildings.

Kinney, Satkartar; Piette, Mary Ann

2002-01-01T23:59:59.000Z

246

NMSSM Higgs Benchmarks Near 125 GeV  

E-Print Network (OSTI)

The recent LHC indications of a SM-like Higgs boson near 125 GeV are consistent not only with the Standard Model (SM) but also with Supersymmetry (SUSY). However naturalness arguments disfavour the Minimal Supersymmetric Standard Model (MSSM). We consider the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a SM-like Higgs boson near 125 GeV involving relatively light stops and gluinos below 1 TeV in order to satisfy naturalness requirements. We are careful to ensure that the chosen values of couplings do not become non perturbative below the grand unification (GUT) scale, although we also examine how these limits may be extended by the addition of extra matter to the NMSSM at the two-loop level. We then propose four sets of benchmark points corresponding to the SM-like Higgs boson being the lightest or the second lightest Higgs state in the NMSSM or the NMSSM-with-extra-matter. With the aid of these benchmark points we discuss how the NMSSM Higgs boson near 125 GeV may be distinguished from the SM Higgs boson in future LHC searches.

S. F. King; M. Muhlleitner; R. Nevzorov

2012-01-12T23:59:59.000Z

247

Metrics and Benchmarks for Energy Efficiency in Laboratories  

E-Print Network (OSTI)

benchmarks that are based on the actual measured energy use of comparable buildings.energy efficiency metrics and benchmarks for laboratories, which have been developed and applied to several laboratory buildings –building targets be evaluated against empirical benchmarks that are based on the measured energy

Mathew, Paul; Rumsey Engineers

2008-01-01T23:59:59.000Z

248

Conventional Benchmarks as a Sample of the Performance Spectrum  

Science Conference Proceedings (OSTI)

Most benchmarks are smaller than actual application programs. One reason is to improve benchmark universality by demanding resources every computer is likely to have. However, users dynamically increase the size of application programs to match the power ... Keywords: HINT, benchmarks, hierarchical memory, performance analysis

John L. Gustafson; Rajat Todi

1999-05-01T23:59:59.000Z

249

Multi-model Mean Nitrogen and Sulfur Deposition from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): Evaluation of Historical and Projected Future Changes  

Science Conference Proceedings (OSTI)

We present multi-model global datasets of nitrogen and sulfate deposition covering time periods from 1850 to 2100, calculated within the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). The computed deposition fluxes are compared to surface wet deposition and ice-core measurements. We use a new dataset of wet deposition for 2000-2002 based on critical assessment of the quality of existing regional network data. We show that for present-day (year 2000 ACCMIP time-slice), the ACCMIP results perform similarly to previously published multi-model assessments. The analysis of changes between 1980 and 2000 indicates significant differences between model and measurements over the United States, but less so over Europe. This difference points towards misrepresentation of 1980 NH3 emissions over North America. Based on ice-core records, the 1850 deposition fluxes agree well with Greenland ice cores but the change between 1850 and 2000 seems to be overestimated in the Northern Hemisphere for both nitrogen and sulfur species. Using the Representative Concentration Pathways to define the projected climate and atmospheric chemistry related emissions and concentrations, we find large regional nitrogen deposition increases in 2100 in Latin America, Africa and parts of Asia under some of the scenarios considered. Increases in South Asia are especially large, and are seen in all scenarios, with 2100 values more than double 2000 in some scenarios and reaching >1300 mgN/m2/yr averaged over regional to continental scale regions in RCP 2.6 and 8.5, ~30-50% larger than the values in any region currently (2000). Despite known issues, the new ACCMIP deposition dataset provides novel, consistent and evaluated global gridded deposition fields for use in a wide range of climate and ecological studies.

Lamarque, Jean-Francois; Dentener, Frank; McConnell, J.R.; Ro, C-U; Shaw, Mark; Vet, Robert; Bergmann, D.; Cameron-Smith, Philip; Dalsoren, S.; Doherty, R.; Faluvegi, G.; Ghan, Steven J.; Josse, B.; Lee, Y. H.; MacKenzie, I. A.; Plummer, David; Shindell, Drew; Skeie, R. B.; Stevenson, D. S.; Strode, S.; Zeng, G.; Curran, M.; Dahl-Jensen, D.; Das, S.; Fritzsche, D.; Nolan, M.

2013-08-20T23:59:59.000Z

250

Measure, track, and benchmark | ENERGY STAR Buildings & Plants  

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

Measure, track, and benchmark Measure, track, and benchmark Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Get started with ENERGY STAR Make the business case Build an energy management program Measure, track, and benchmark Tools for benchmarking energy management practices Tools for tracking and benchmarking facility energy performance ENERGY STAR Energy Performance Indicators for plants

251

RTJBench: A RealTime Java Benchmarking Framework  

E-Print Network (OSTI)

Abstract. The paper gives an overview of RTJBench, a framework designed to assist in the task of benchmarking programs written in the Real-Time Specification for Java, but with potentially more general applicability. RTJBench extends the JUnit framework for unit testing of Java applications with tools for real-time environment configuration, simple data processing and configurable graphical presentation services. We present design principles of RTJBench and give an example of a benchmarking suite we have been using for daily regression benchmarking of the Open Virtual Machine. Keywords: Benchmarking, regression benchmarking, Real-Time Specification for Java

Marek Prochazka; Andrey Madan; Jan Vitek; Wenchang Liu

2004-01-01T23:59:59.000Z

252

Use ENERGY STAR benchmarking tools | ENERGY STAR Buildings & Plants  

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

Use ENERGY STAR benchmarking tools Use ENERGY STAR benchmarking tools Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Build an energy program Improve building and plant performance Earn the ENERGY STAR and other recognition Benchmark energy use Learn about benchmarking Use ENERGY STAR benchmarking tools ENERGY STAR in action Communicate and educate

253

Benchmarking Of Improved DPAC Transient Deflagration Analysis Code  

SciTech Connect

The transient deflagration code DPAC (Deflagration Pressure Analysis Code) has been upgraded for use in modeling hydrogen deflagration transients. The upgraded code is benchmarked using data from vented hydrogen deflagration tests conducted at the HYDRO-SC Test Facility at the University of Pisa. DPAC originally was written to calculate peak deflagration pressures for deflagrations in radioactive waste storage tanks and process facilities at the Savannah River Site. Upgrades include the addition of a laminar flame speed correlation for hydrogen deflagrations and a mechanistic model for turbulent flame propagation, incorporation of inertial effects during venting, and inclusion of the effect of water vapor condensation on vessel walls. In addition, DPAC has been coupled with CEA, a NASA combustion chemistry code. The deflagration tests are modeled as end-to-end deflagrations. The improved DPAC code successfully predicts both the peak pressures during the deflagration tests and the times at which the pressure peaks.

2013-03-21T23:59:59.000Z

254

Historic Preservation | Department of Energy  

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

Historic Historic Preservation Historic Preservation 1. What does the Programmatic Agreement on historic preservation entail? DOE staff worked with the Advisory Council on Historic Preservation and the National Conference of State Historic Preservation Officers to complete a prototype Programmatic Agreement (PA). By way of background, the PA will allow flexibility between the States while recognizing that many States have already instituted effective consultation protocols that can be applied to DOE's programs. Through this PA, DOE has taken a categorical approach to activities to streamline reviews, reduce the heavy burden placed on SHPOs, and expedite the obligation of Recovery Act funds. The PA also recognizes the sovereignty of Tribal governments while allowing them

255

An energy performance index for historic buildings  

E-Print Network (OSTI)

This thesis reports studies conducted on historic buildings from the 1880 to 1900 era. These buildings were recently renovated and many more years of service are expected. Derivation of an energy demand prediction index was the primary study goal. Texas Historic Commission files were a primary data source to probe the second study goal; definition of data base needs for technical studies using state historic office files. A statistically valid prediction equation was produced which covers buildings between 10,000 and 30,000 square feet in floor area. Buildings from Austin and Galveston, Texas were used in the derivation; thus, these findings are limited to climates similar to those locations. The second goal was also achieved since the file data available were sufficient to support the study. The input data file design provides a proven example for development of a final data base specification. Field audits validated method accuracy and reinforced the starting hypothesis, reused historic buildings are examples of sustainability in action. The massive construction of these buildings furnished 30?% of building energy demand. Also infiltration was found to be a minor energy demand factor for these climates. This last finding supports preserving historic windows and doors rather than replacing them with very efficient but historically inaccurate models.

Campbell, Scott

1991-01-01T23:59:59.000Z

256

Simulation benchmarks for low-pressure plasmas: capacitive discharges  

E-Print Network (OSTI)

Benchmarking is generally accepted as an important element in demonstrating the correctness of computer simulations. In the modern sense, a benchmark is a computer simulation result that has evidence of correctness, is accompanied by estimates of relevant errors, and which can thus be used as a basis for judging the accuracy and efficiency of other codes. In this paper, we present four benchmark cases related to capacitively coupled discharges. These benchmarks prescribe all relevant physical and numerical parameters. We have simulated the benchmark conditions using five independently developed particle-in-cell codes. We show that the results of these simulations are statistically indistinguishable, within bounds of uncertainty that we define. We therefore claim that the results of these simulations represent strong benchmarks, that can be used as a basis for evaluating the accuracy of other codes. These other codes could include other approaches than particle-in-cell simulations, where benchmarking could exa...

Turner, M M; Donko, Z; Eremin, D; Kelly, S J; Lafleur, T; Mussenbrock, T

2012-01-01T23:59:59.000Z

257

Measuring Performance and Benchmarking Project Management  

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

Measuring Performance and Measuring Performance and Benchmarking Project Management at the Department of Energy Measuring Performance and Benchmarking Project Management at the Department of Energy Committee for Oversight and Assessment of U.S. Department of Energy Project Management Board on Infrastructure and the Constructed Environment Division on Engineering and Physical Sciences THE NATIONAL ACADEMIES PRESS WASHINGTON, D.C. www.nap.edu THE NATIONAL ACADEMIES PRESS 500 Fifth Street, N.W. Washington, DC 20001 NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the

258

Characterizing Quantum Gates via Randomized Benchmarking  

E-Print Network (OSTI)

We describe and expand upon the scalable randomized benchmarking protocol proposed in Phys. Rev. Lett. 106, 180504 (2011) which provides a method for benchmarking quantum gates and estimating the gate-dependence of the noise. The protocol allows the noise to have weak time and gate-dependence, and we provide a sufficient condition for the applicability of the protocol in terms of the average variation of the noise. We discuss how state preparation and measurement errors are taken into account and provide a complete proof of the scalability of the protocol. We establish a connection in special cases between the error rate provided by this protocol and the error strength measured using the diamond norm distance.

Easwar Magesan; Jay M. Gambetta; Joseph Emerson

2011-09-30T23:59:59.000Z

259

Parton Distribution Benchmarking with LHC Data  

E-Print Network (OSTI)

We present a detailed comparison of the most recent sets of NNLO PDFs from the ABM, CT, HERAPDF, MSTW and NNPDF collaborations. We compare parton distributions at low and high scales and parton luminosities relevant for LHC phenomenology. We study the PDF dependence of LHC benchmark inclusive cross sections and differential distributions for electroweak boson and jet production in the cases in which the experimental covariance matrix is available. We quantify the agreement between data and theory by computing the chi2 for each data set with all the various PDFs. PDF comparisons are performed consistently for common values of the strong coupling. We also present a benchmark comparison of jet production at the LHC, comparing the results from various available codes and scale settings. Finally, we discuss the implications of the updated NNLO PDF sets for the combined PDF+alphaS uncertainty in the gluon fusion Higgs production cross section.

Richard D. Ball; Stefano Carrazza; Luigi Del Debbio; Stefano Forte; Jun Gao; Nathan Hartland; Joey Huston; Pavel Nadolsky; Juan Rojo; Daniel Stump; Robert S. Thorne; C. -P. Yuan

2012-11-21T23:59:59.000Z

260

Benchmark West Texas Intermediate crude assayed  

Science Conference Proceedings (OSTI)

The paper gives an assay of West Texas Intermediate, one of the world's market crudes. The price of this crude, known as WTI, is followed by market analysts, investors, traders, and industry managers around the world. WTI price is used as a benchmark for pricing all other US crude oils. The 41[degree] API WTI posted prices is the price paid for the crude at the wellhead in West Texas and is the true benchmark on which other US crudes are priced. The spot price is the negotiated price for short-term trades of the crude. And the New York Mercantile Exchange, or Nymex, price is a futures price for barrels delivered at Cushing.

Rhodes, A.K.

1994-08-15T23:59:59.000Z

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


261

MESURE Tool to benchmark Java Card platforms  

E-Print Network (OSTI)

The advent of the Java Card standard has been a major turning point in smart card technology. With the growing acceptance of this standard, understanding the performance behavior of these platforms is becoming crucial. To meet this need, we present in this paper a novel benchmarking framework to test and evaluate the performance of Java Card platforms. MESURE tool is the first framework which accuracy and effectiveness are independent from the particular Java Card platform tested and CAD used.

Bouzefrane, Samia; Paradinas, Pierre

2009-01-01T23:59:59.000Z

262

Benchmark analysis for the design of piping systems in advanced reactors  

SciTech Connect

To satisfy the need for the verification of the computer programs and modeling techniques that will be used to perform the final piping analyses for an advanced boding water reactor standard design, three piping benchmark problems were developed. The problems are representative piping systems subjected to representative dynamic loads with solutions developed using the methods being proposed for analysis for the advanced reactor standard design. It will be required that the combined license holders demonstrate that their solutions to these problems are in agreement with the benchmark problem set. A summary description of each problem and some sample results are included.

Bezler, P.; DeGrassi, G.; Braverman, J. (Brookhaven National Lab., Upton, NY (United States)); Shounien Hou (Nuclear Regulatory Commission, Washington, DC (United States))

1993-01-01T23:59:59.000Z

263

Benchmark analysis for the design of piping systems in advanced reactors  

Science Conference Proceedings (OSTI)

To satisfy the need for the verification of the computer programs and modeling techniques that will be used to perform the final piping analyses for an advanced boding water reactor standard design, three piping benchmark problems were developed. The problems are representative piping systems subjected to representative dynamic loads with solutions developed using the methods being proposed for analysis for the advanced reactor standard design. It will be required that the combined license holders demonstrate that their solutions to these problems are in agreement with the benchmark problem set. A summary description of each problem and some sample results are included.

Bezler, P.; DeGrassi, G.; Braverman, J. [Brookhaven National Lab., Upton, NY (United States); Shounien Hou [Nuclear Regulatory Commission, Washington, DC (United States)

1993-03-01T23:59:59.000Z

264

Higgs-Boson Benchmarks in Agreement with CDM, EWPO and BPO  

E-Print Network (OSTI)

We explore `benchmark planes' in the Minimal Supersymmetric Standard Model (MSSM) that are in agreement with the measured cold dark matter (CDM) density, electroweak precision observables (EWPO) and B physics observables (BPO). The M_A-tan_beta planes are specified assuming that gaugino masses m_{1/2}, soft trilinear supersymmetry-breaking parameters A_0 and the soft supersymmetry-breaking contributions m_0 to the squark and slepton masses are universal, but not those associated with the Higgs multiplets (the NUHM framework). We discuss the prospects for probing experimentally these benchmark surfaces at the Tevatron collider, the LHC and the ILC.

S. Heinemeyer

2007-10-16T23:59:59.000Z

265

Nek5000 Ready to Use after Simulations of Important Pipe Flow Benchmark |  

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

Nek5000 Ready to Use after Simulations of Important Pipe Flow Nek5000 Ready to Use after Simulations of Important Pipe Flow Benchmark Nek5000 Ready to Use after Simulations of Important Pipe Flow Benchmark January 29, 2013 - 1:42pm Addthis Velocity magnitude in MATiS-H spacer grid with swirl-type vanes. Velocity magnitude in MATiS-H spacer grid with swirl-type vanes. As part of the on-going Nek5000 validation efforts, a series of large eddy simulations (LES) have been performed for thermal stratification in a pipe. Results were in good agreement with the experiment and the simulation data has provided insight into the physics of the flow. An additional series of simulations of the OECD-NEA MATiS-H benchmark has also been completed using intermediate- fidelity modeling approaches, such as k-epsilon, k-omega shear stress transport, and ID detached eddy simulation, as well as one

266

Experimental power density distribution benchmark in the TRIGA Mark II reactor  

Science Conference Proceedings (OSTI)

In order to improve the power calibration process and to benchmark the existing computational model of the TRIGA Mark II reactor at the Josef Stefan Inst. (JSI), a bilateral project was started as part of the agreement between the French Commissariat a l'energie atomique et aux energies alternatives (CEA) and the Ministry of higher education, science and technology of Slovenia. One of the objectives of the project was to analyze and improve the power calibration process of the JSI TRIGA reactor (procedural improvement and uncertainty reduction) by using absolutely calibrated CEA fission chambers (FCs). This is one of the few available power density distribution benchmarks for testing not only the fission rate distribution but also the absolute values of the fission rates. Our preliminary calculations indicate that the total experimental uncertainty of the measured reaction rate is sufficiently low that the experiments could be considered as benchmark experiments. (authors)

Snoj, L.; Stancar, Z.; Radulovic, V.; Podvratnik, M.; Zerovnik, G.; Trkov, A. [Josef Stefan Inst., Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Barbot, L.; Domergue, C.; Destouches, C. [CEA DEN, DER, Instrumentation Sensors and Dosimetry laboratory Cadarache, F-13108 Saint-Paul-Lez-Durance (France)

2012-07-01T23:59:59.000Z

267

Introduction to the HPC Challenge Benchmark Suite  

Science Conference Proceedings (OSTI)

The HPC Challenge benchmark suite has been released by the DARPA HPCS program to help define the performance boundaries of future Petascale computing systems. HPC Challenge is a suite of tests that examine the performance of HPC architectures using kernels with memory access patterns more challenging than those of the High Performance Linpack (HPL) benchmark used in the Top500 list. Thus, the suite is designed to augment the Top500 list, providing benchmarks that bound the performance of many real applications as a function of memory access characteristics e.g., spatial and temporal locality, and providing a framework for including additional tests. In particular, the suite is composed of several well known computational kernels (STREAM, HPL, matrix multiply--DGEMM, parallel matrix transpose--PTRANS, FFT, RandomAccess, and bandwidth/latency tests--b{sub eff}) that attempt to span high and low spatial and temporal locality space. By design, the HPC Challenge tests are scalable with the size of data sets being a function of the largest HPL matrix for the tested system.

Luszczek, Piotr; Dongarra, Jack J.; Koester, David; Rabenseifner,Rolf; Lucas, Bob; Kepner, Jeremy; McCalpin, John; Bailey, David; Takahashi, Daisuke

2005-04-25T23:59:59.000Z

268

Historical Maps Online  

E-Print Network (OSTI)

For 20 years, David Rumsey assembled a collection of more than 150,000 historical maps of the Americas and the world. Motivated by a desire to make his private map collection a free public resource, Rumsey then created an online map library, http://www.davidrumsey.com/, which currently has over 10,000 high resolution images of maps from his collection. He has also built a suite of tools for users to experience and interpret the maps online. These include GIS, which allows users to combine historical maps with modern geospatial data to see change over time. The online map collection can be accessed over the Internet from search engines, library catalogs, GIS databases and many other entry points. Rumsey continues to add new content to the online collection and develops new tools that improve both the user experience and the online library architecture.

Rumsey, David Y.

2005-01-31T23:59:59.000Z

269

Historic Marker.doc  

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

your email here@srs.gov your email here@srs.gov Historic Tank Marker Donated to Savannah River Site Archives AIKEN, S.C. (February 6, 2013) - The 1997 marker commemorating the operational closure of the nation's first Cold War era nuclear waste tank has been donated by Savannah River Remediation (SRR) to the Savannah River Cold War Artifact Collection. In accepting the marker, Caroline Bradford, curator of the Savannah River Cold War

270

Towards a Benchmark and Automatic Calibration for IR-Based Concept Location  

Science Conference Proceedings (OSTI)

There has been a great deal of research into the use of Information Retrieval (IR)-based techniques to support concept location in source code. Much of this research has been focused on determining how to use various IR techniques to support concept ... Keywords: concept location, data model, software change reenactment, information retrieval, parameter calibration, benchmark

Scott David Ohlemacher; Andrian Marcus

2011-06-01T23:59:59.000Z

271

Historical Natural Gas Annual 1999  

Gasoline and Diesel Fuel Update (EIA)

1999 1999 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at selected points in the flow of gas from the wellhead to the burner-tip. Data include production, transmission within the United States, imports and exports of natural gas, underground storage activities, and deliveries to consumers. The publication presents historical data at the national level for 1930-1999 and detailed annual historical information by State for 1967-1999. The Historical Natural Gas Annual tables are available as self-extracting executable files in ASCII TXT or CSV file formats. Tables 1-3 present annual historical data at the national level for 1930-1999. The remaining tables contain detailed annual historical information, by State, for 1967-1999. Please read the file entitled READMEV2 for a description and documentation of information included in this file.

272

Control of a benchmark structure using GA-optimized fuzzy logic control  

E-Print Network (OSTI)

Mitigation of displacement and acceleration responses of a three story benchmark structure excited by seismic motions is pursued in this study. Multiple 20-kN magnetorheological (MR) dampers are installed in the three-story benchmark structure and managed by a global fuzzy logic controller to provide smart damping forces to the benchmark structure. Two configurations of MR damper locations are considered to display multiple-input, single-output and multiple-input, multiple-output control capabilities. Characterization tests of each MR damper are performed in a laboratory to enable the formulation of fuzzy inference models. Prediction of MR damper forces by the fuzzy models shows sufficient agreement with experimental results. A controlled-elitist multi-objective genetic algorithm is utilized to optimize a set of fuzzy logic controllers with concurrent consideration to four structural response metrics. The genetic algorithm is able to identify optimal passive cases for MR damper operation, and then further improve their performance by intelligently modulating the command voltage for concurrent reductions of displacement and acceleration responses. An optimal controller is identified and validated through numerical simulation and fullscale experimentation. Numerical and experimental results show that performance of the controller algorithm is superior to optimal passive cases in 43% of investigated studies. Furthermore, the state-space model of the benchmark structure that is used in numerical simulations has been improved by a modified version of the same genetic algorithm used in development of fuzzy logic controllers. Experimental validation shows that the state-space model optimized by the genetic algorithm provides accurate prediction of response of the benchmark structure to base excitation.

Shook, David Adam

2006-12-01T23:59:59.000Z

273

ABM11 parton distributions and benchmarks  

E-Print Network (OSTI)

We present a determination of the nucleon parton distribution functions (PDFs) and of the strong coupling constant $\\alpha_s$ at next-to-next-to-leading order (NNLO) in QCD based on the world data for deep-inelastic scattering and the fixed-target data for the Drell-Yan process. The analysis is performed in the fixed-flavor number scheme for $n_f=3,4,5$ and uses the $\\bar{MS}$ scheme for $\\alpha_s$ and the heavy quark masses. The fit results are compared with other PDFs and used to compute the benchmark cross sections at hadron colliders to the NNLO accuracy.

S. Alekhin; J. Bluemlein; S. -O. Moch

2012-08-07T23:59:59.000Z

274

Manufacturers' View on Benchmarking and Disclosure  

U.S. Energy Information Administration (EIA) Indexed Site

Association of Electrical and Association of Electrical and Medical Imaging Equipment Manufacturers Manufacturing Solutions for Energy Efficiency in Buildings Patrick Hughes Policy Director, High Performance Buildings National Electrical Manufacturers Association The Association of Electrical and Medical Imaging Equipment Manufacturers What is NEMA? The Association of Electrical Equipment and Medical Imaging Manufacturers Which policies encourage energy efficiency in buildings? Energy Savings Performance Contracts Tax Incentives Shaheen- Portman Benchmarking and Disclosure Bullitt Center Seattle, Washington The Association of Electrical Equipment and Medical Imaging Manufacturers Energy Savings Performance Contracts ESPCs pay for efficiency upgrades with

275

Historical Interest Rates  

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

Current and Historical Interest Rates Current and Historical Interest Rates The table lists interest rates, from the project's inception through the present, for all projects with repayment supervised by the CRSP MC. The latest available interest rate is used for all future interest rate calculations. The Amistad-Falcon, Collbran, Provo River, and Rio Grande Projects are all assigned the average daily "Yield Rate" calculated by the U.S. Treasury, on an annual basis, for Treasury bonds having terms of 15 years or more remaining to maturity. The calculated yield rate is rounded to the nearest one-eighth of one percent. The yield rate is based upon the bond's interest rate, as well as its market value. The Colorado River Storage Project and its participating projects, Dolores and Seedskadee, are assigned the average daily "Coupon Rate," annualized for the same U.S. Treasury bonds used in "Yield Rate" calculations. The coupon rate is the interest rate that the bond carries upon its face.

276

Background - Historical Perspective  

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

Historical Perspective Historical Perspective The Highway Trust Fund (HTF) was established in 1956 (Public Law 84-627) to ensure a dependable source of Federal funding to support highway programs. Prior to 1956, motor fuel and vehicle taxes went to the General Fund; although highway funding was provided from the General Fund, there was no relationship between fuel tax receipts and highway funding. Since 1956, legislation has periodically extended taxation of motor fuels and the HTF. The Transportation Equity Act for the 21st Century (TEA-21) extended the HTF through September 30, 2005. The HTF currently contains two accounts: the Highway Account and the Mass Transit Account; this document only concerns funds in the Highway Account. The income and outlays for transportation have increased steadily over time. The closing balance of funds in the Highway Account of the HTF remained at around $10 billion from 1983 through 1995. In 2000, the closing balance in the Highway Account was over $22.5 billion. It is necessary to maintain a balance of funds in the HTF to be able to meet unpaid commitments. This balance is not surplus funds because the HTF functions as a reimbursable program and must maintain funds for reimbursing obligations. The closing balance (income - outlays = closing balance) is shown in the following chart for 1957 through 2000 (the latest available data).

277

Tools for tracking and benchmarking facility energy performance | ENERGY  

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

Industrial energy management Industrial energy management » Measure, track, and benchmark » Tools for tracking and benchmarking facility energy performance Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Get started with ENERGY STAR Make the business case Build an energy management program Measure, track, and benchmark Tools for benchmarking energy management practices

278

Energy Tips: Benchmark the Fuel Cost of Steam Generation | ENERGY...  

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

You are here Home Buildings & Plants Energy Tips: Benchmark the Fuel Cost of Steam Generation Secondary menu About us Press room Contact Us Portfolio Manager Login...

279

New Benchmark Instances for the Steiner Problem in Graphs  

E-Print Network (OSTI)

Sep 26, 2001 ... New Benchmark Instances for the Steiner Problem in Graphs. Isabel Rosseti ( rosseti ***at*** inf.puc-rio.br) Marcus Poggi de Aragăo (poggi ...

280

Hospital Energy Benchmarking Guidance - Version 1.0  

Science Conference Proceedings (OSTI)

This document describes an energy benchmarking framework for hospitals. The document is organized as follows. The introduction provides a brief primer on benchmarking and its application to hospitals. The next two sections discuss special considerations including the identification of normalizing factors. The presentation of metrics is preceded by a description of the overall framework and the rationale for the grouping of metrics. Following the presentation of metrics, a high-level protocol is provided. The next section presents draft benchmarks for some metrics; benchmarks are not available for many metrics owing to a lack of data. This document ends with a list of research needs for further development.

Singer, Brett C.

2009-09-08T23:59:59.000Z

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


281

Hospital Energy Benchmarking Guidance - Version 1.0  

E-Print Network (OSTI)

Region Benchmarks 1 Source & notes HOSPITAL BUILDING ENERGYbenchmarks are based on hospital energy end use estimates presented on LBNL’s EnergyIQ commercial building

Singer, Brett C.

2010-01-01T23:59:59.000Z

282

Tools for benchmarking energy management practices | ENERGY STAR  

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

benchmarking energy management practices Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new...

283

Use Energy Information Services to Benchmark with ENERGY STAR  

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

service products that meet different customer needs including: > Utility Bill Management: ENERGY STAR automated benchmarking, utility tracking, bill processing and payment,...

284

Benchmark Results for TraPPE Carbon Dioxide  

Science Conference Proceedings (OSTI)

Benchmark results for TraPPE Carbon Dioxide. The purpose of these pages is to provide some explicit results from Monte ...

2013-09-20T23:59:59.000Z

285

NERSC-6 Workload Analysis and Benchmark Selection Process  

E-Print Network (OSTI)

Computational Characteristics for NERSC?6 Benchmarks. *CI isScience-Driven Computing: NERSC’s Plan for 2006–2010,”Erich Strohmaier, “The NERSC Sustained System Performance (

Antypas, Katie

2008-01-01T23:59:59.000Z

286

ENERGY STAR Building Upgrade Manual Chapter 2: Benchmarking ...  

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

efficiency upgrades presented in an easy-to-understand framework designed especially for ENERGY STAR partners. This 12-page chapter defines benchmarking, what successful...

287

Benchmarking ICRF Full-wave Solvers for ITER  

DOE Green Energy (OSTI)

Abstract Benchmarking of full-wave solvers for ICRF simulations is performed using plasma profiles and equilibria obtained from integrated self-consistent modeling predictions of four ITER plasmas. One is for a high performance baseline (5.3 T, 15 MA) DT H-mode. The others are for half-field, half-current plasmas of interest for the pre-activation phase with bulk plasma ion species being either hydrogen or He4. The predicted profiles are used by six full-wave solver groups to simulate the ICRF electromagnetic fields and heating, and by three of these groups to simulate the current-drive. Approximate agreement is achieved for the predicted heating power for the DT and He4 cases. Factor of two disagreements are found for the cases with second harmonic He3 heating in bulk H cases. Approximate agreement is achieved simulating the ICRF current drive.

R. V. Budny, L. Berry, R. Bilato, P. Bonoli, M. Brambilla, R. J. Dumont, A. Fukuyama, R. Harvey, E. F. Jaeger, K. Indireshkumar, E. Lerche, D. McCune, C. K. Phillips, V. Vdovin, J. Wright, and members of the ITPA-IOS

2011-01-06T23:59:59.000Z

288

VVER-440 dosimetry and neutron spectrum benchmark  

SciTech Connect

Light Water Reactor (LWR) benchmark experiments performed in the United States under the Surveillance Dosimetry Improvement Program (SDIP), in general, reported measured reaction rates and not neutron flux spectrum. The VVER-440 benchmark experiments, using a combination of spherical hydrogen-filled proportional counters and a stilbene scintillator detector, were measurements that provided a direct verification of the transport neutron flux spectrum. The original SAILOR cross-section library from ENDF/B-IV were used, except that the iron, hydrogen, and oxygen values from ENDF/B-VI were inserted. A linear-least-squares analysis showed that the average difference between calculations and measurements below 10 MeV was (a) less than 6% at the surveillance position; (b) less than 5% at the pressure vessel (PV) inner surface; (c) less than 6% at 1/3 thickness into the PV (1/3 T); (d) less than 17% at 2/3 thickness into the PV (2/3 T); and (e) less than 24% at the PV outer surface.

Sajot, E. [Louisiana State Univ., Baton Rouge, LA (United States). Nuclear Science Center; Kam, F.B.K. [Oak Ridge National Lab., TN (United States)

1993-11-01T23:59:59.000Z

289

Updated Post-WMAP Benchmarks for Supersymmetry  

E-Print Network (OSTI)

We update a previously-proposed set of supersymmetric benchmark scenarios, taking into account the precise constraints on the cold dark matter density obtained by combining WMAP and other cosmological data, as well as the LEP and b -> s gamma constraints. We assume that R parity is conserved and work within the constrained MSSM (CMSSM) with universal soft supersymmetry-breaking scalar and gaugino masses m_0 and m_1/2. In most cases, the relic density calculated for the previous benchmarks may be brought within the WMAP range by reducing slightly m_0, but in two cases more substantial changes in m_0 and m_1/2 are made. Since the WMAP constraint reduces the effective dimensionality of the CMSSM parameter space, one may study phenomenology along `WMAP lines' in the (m_1/2, m_0) plane that have acceptable amounts of dark matter. We discuss the production, decays and detectability of sparticles along these lines, at the LHC and at linear e+ e- colliders in the sub- and multi-TeV ranges, stressing the complementarity of hadron and lepton colliders, and with particular emphasis on the neutralino sector. Finally, we preview the accuracy with which one might be able to predict the density of supersymmetric cold dark matter using collider measurements.

M. Battaglia; A. De Roeck; J. Ellis; F. Gianotti; K. A. Olive; L. Pape

2003-06-23T23:59:59.000Z

290

The CP-violating type-II 2HDM and Charged Higgs boson benchmarks  

E-Print Network (OSTI)

We review and update the interpretation of the 125 GeV scalar as the lightest Higgs boson of the Two-Higgs-Doublet Model, allowing for CP violation in the potential. The detection of a charged Higgs boson would exclude the Standard Model. Proposed benchmarks for charged-Higgs searches in the channel pp\\to H^+W^-X\\to W^+W^-H_1X are reviewed and updated.

Lorenzo Basso; Anna Lipniacka; Farvah Mahmoudi; Stefano Moretti; Per Osland; Giovanni Marco Pruna; Mahdi Purmohammadi

2013-05-14T23:59:59.000Z

291

Blind Benchmark Calculations for Melt Spreading in the ECOSTAR Project  

SciTech Connect

The Project ECOSTAR (5. EC Framework Programme) on Ex-Vessel Core Melt Stabilisation Research is oriented towards the analysis and mitigation of severe accident sequences that could occur in the ex-vessel phase of a postulated core melt accident. Spreading of the corium melt on the available basement surface is an important process, which defines the initial conditions for concrete attack and for the efficiency of cooling in case of water contact, respectively. The transfer and spreading of the melt on the basement is one of the major issues in ECOSTAR. This is addressed here by a spreading code benchmark involving a large-scale spreading experiment that is used for the validation of the existing spreading codes. The corium melt is simulated by a mixture of Al{sub 2}O{sub 3}, SiO{sub 2}, CaO and FeO with a sufficiently wide freezing interval. In the 3-dim benchmark test ECOKATS-1 170 litres of oxide melt are poured onto a 3 m by 4 m concrete surface with a low flow rate of about 2 l/s. From the results of an additional 2-dim channel experiment some basic rheological data (e.g. initial viscosity) are obtained in order to minimise the uncertainty in material properties of the melt. The participating spreading codes CORFLOW (Framatome ANP/FZK), LAVA (GRS), and THEMA (CEA) differ from each other by their focus of modelling and the assumptions made to simplify the relevant transport equations. In a first step both experiments (3-dim/2-dim) are calculated blindly by the participating codes. This serves for an overall assessment of the codes capabilities to predict the spreading of a melt with rather unknown material properties. In a second step the 3-dim experiment ECOKATS-1 is recalculated by the codes with the more precise knowledge of the rheological behaviour of the oxide melt in the 2-dim experiment. This, in addition, serves for the validation of the codes' capabilities to predict the spreading of a melt with well-known material properties. Based on the benchmark results and taking the specific validation process for each of the three codes applied into account, it is recommended that the spreading issue for reactor safety research be considered closed. (authors)

Spengler, C.; Allelein, H.J. [Gesellschaft fuer Anlagen- und Reaktorsicherheit, Schwertnergasse 1, 50667 Cologne (Germany); Foit, J.J.; Alsmeyer, H. [Forschungszentrum Karlsruhe, P.O. Box 36 40, 76021 Karlsruhe (Germany); Spindler, B.; Veteau, J.M. [CEA, 17, rue des Martyrs, 38054 Grenoble (France); Artnik, J.; Fischer, M. [Framatome ANP, P.O. Box 32 20, 91050 Erlangen (Germany)

2004-07-01T23:59:59.000Z

292

Historic Preservation | Department of Energy  

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

Act General Questions Eligibility Buy American Davis Bacon Historic Preservation Appropriations Questions Procurement Other Topics Sign Up for GC Updates Jobs and Internships All...

293

Science Driven Supercomputing Architectures: AnalyzingArchitectural Bottlenecks with Applications and Benchmark Probes  

SciTech Connect

There is a growing gap between the peak speed of parallel computing systems and the actual delivered performance for scientific applications. In general this gap is caused by inadequate architectural support for the requirements of modern scientific applications, as commercial applications and the much larger market they represent, have driven the evolution of computer architectures. This gap has raised the importance of developing better benchmarking methodologies to characterize and to understand the performance requirements of scientific applications, to communicate them efficiently to influence the design of future computer architectures. This improved understanding of the performance behavior of scientific applications will allow improved performance predictions, development of adequate benchmarks for identification of hardware and application features that work well or poorly together, and a more systematic performance evaluation in procurement situations. The Berkeley Institute for Performance Studies has developed a three-level approach to evaluating the design of high end machines and the software that runs on them: (1) A suite of representative applications; (2) A set of application kernels; and (3) Benchmarks to measure key system parameters. The three levels yield different type of information, all of which are useful in evaluating systems, and enable NSF and DOE centers to select computer architectures more suited for scientific applications. The analysis will further allow the centers to engage vendors in discussion of strategies to alleviate the present architectural bottlenecks using quantitative information. These may include small hardware changes or larger ones that may be out interest to non-scientific workloads. Providing quantitative models to the vendors allows them to assess the benefits of technology alternatives using their own internal cost-models in the broader marketplace, ideally facilitating the development of future computer architectures more suited for scientific computations. The three levels also come with vastly different investments: the benchmarking efforts require significant rewriting to effectively use a given architecture, which is much more difficult on full applications than on smaller benchmarks.

Kamil, S.; Yelick, K.; Kramer, W.T.; Oliker, L.; Shalf, J.; Shan,H.; Strohmaier, E.

2005-09-26T23:59:59.000Z

294

Making Buildings Part of the Climate Solution by Overcoming Information Gaps through Benchmarking  

E-Print Network (OSTI)

This paper focuses on the impact of benchmarking the energy performance of U.S. commercial buildings by requiring utilities to submit energy data to a uniform database accessible to building owners and tenants. Understanding how a commercial building uses energy has many benefits; in particular, it helps building owners and tenants focus on poor-performing buildings and subsystems, and enables highperforming buildings to participate in various certification programs that can lead to higher occupancy rates, rents, and property values. Through analysis chiefly utilizing the Georgia Tech version of the National Energy Modeling System (GT-NEMS), updating input discount rates and the impact of benchmarking shows a reduction in energy consumption of 5.6 % in 2035 relative to the Reference case projection of the Annual Energy Outlook 2011. It is estimated that the benefits of a national benchmarking policy would outweigh the costs, both to the private sector and society broadly. However, its geographical impact would vary substantially, with the South Atlantic and New England regions benefiting the most. By reducing the discount rates used to evaluate energy-efficiency investments, benchmarking would increase the purchase of energy-efficient equipment thereby reducing energy bills, CO2 emissions, and conventional air pollution. *Corresponding author:

Matt Cox; Marilyn A. Brown; Xiaojing Sun; Dr. Marilyn; A. Brown; D. M. Smith Building

2012-01-01T23:59:59.000Z

295

Guidebook for Using the Tool BEST Cement: Benchmarking and Energy Savings Tool for the Cement Industry  

SciTech Connect

The Benchmarking and Energy Savings Tool (BEST) Cement is a process-based tool based on commercially available efficiency technologies used anywhere in the world applicable to the cement industry. This version has been designed for use in China. No actual cement facility with every single efficiency measure included in the benchmark will likely exist; however, the benchmark sets a reasonable standard by which to compare for plants striving to be the best. The energy consumption of the benchmark facility differs due to differences in processing at a given cement facility. The tool accounts for most of these variables and allows the user to adapt the model to operational variables specific for his/her cement facility. Figure 1 shows the boundaries included in a plant modeled by BEST Cement. In order to model the benchmark, i.e., the most energy efficient cement facility, so that it represents a facility similar to the user's cement facility, the user is first required to input production variables in the input sheet (see Section 6 for more information on how to input variables). These variables allow the tool to estimate a benchmark facility that is similar to the user's cement plant, giving a better picture of the potential for that particular facility, rather than benchmarking against a generic one. The input variables required include the following: (1) the amount of raw materials used in tonnes per year (limestone, gypsum, clay minerals, iron ore, blast furnace slag, fly ash, slag from other industries, natural pozzolans, limestone powder (used post-clinker stage), municipal wastes and others); the amount of raw materials that are preblended (prehomogenized and proportioned) and crushed (in tonnes per year); (2) the amount of additives that are dried and ground (in tonnes per year); (3) the production of clinker (in tonnes per year) from each kiln by kiln type; (4) the amount of raw materials, coal and clinker that is ground by mill type (in tonnes per year); (5) the amount of production of cement by type and grade (in tonnes per year); (6) the electricity generated onsite; and, (7) the energy used by fuel type; and, the amount (in RMB per year) spent on energy. The tool offers the user the opportunity to do a quick assessment or a more detailed assessment--this choice will determine the level of detail of the energy input. The detailed assessment will require energy data for each stage of production while the quick assessment will require only total energy used at the entire facility (see Section 6 for more details on quick versus detailed assessments). The benchmarking tool provides two benchmarks--one for Chinese best practices and one for international best practices. Section 2 describes the differences between these two and how each benchmark was calculated. The tool also asks for a target input by the user for the user to set goals for the facility.

Galitsky, Christina; Price, Lynn; Zhou, Nan; Fuqiu , Zhou; Huawen, Xiong; Xuemin, Zeng; Lan, Wang

2008-07-30T23:59:59.000Z

296

The Snowmass Points and Slopes: Benchmarks for SUSY Searches  

E-Print Network (OSTI)

The ``Snowmass Points and Slopes'' (SPS) are a set of benchmark points and parameter lines in the MSSM parameter space corresponding to different scenarios in the search for Supersymmetry at present and future experiments. This set of benchmarks was agreed upon at the 2001 ``Snowmass Workshop on the Future of Particle Physics'' as a consensus based on different existing proposals.

B. C. Allanach; M. Battaglia; G. A. Blair; M. Carena; A. De Roeck; A. Dedes; A. Djouadi; D. Gerdes; N. Ghodbane; J. Gunion; H. E. Haber; T. Han; S. Heinemeyer; J. L. Hewett; I. Hinchliffe; J. Kalinowski; H. E. Logan; S. P. Martin; H. -U. Martyn; K. T. Matchev; S. Moretti; F. Moortgat; G. Moortgat-Pick; S. Mrenna; U. Nauenberg; Y. Okada; K. A. Olive; W. Porod; M. Schmitt; S. Su; C. E. M. Wagner; G. Weiglein; J. Wells; G. W. Wilson; P. Zerwas

2002-02-25T23:59:59.000Z

297

From Aardvark to Zorro: A Benchmark for Mammal Image Classification  

Science Conference Proceedings (OSTI)

Current object recognition systems aim at recognizing numerous object classes under limited supervision conditions. This paper provides a benchmark for evaluating progress on this fundamental task. Several methods have recently proposed to utilize the ... Keywords: Animals, Annotation, Benchmark, Database, Dataset, Machine learning, Mammals, Multiclass, Natural images, Object recognition, Svm

Michael Fink; Shimon Ullman

2008-05-01T23:59:59.000Z

298

HPC Global File System Performance Analysis Using A Scientific-Application Derived Benchmark  

E-Print Network (OSTI)

Scienti?c-Application Derived Benchmark. In Proc. SC07: HighMonterey, CA, April 11-14 2005. [9] Flash io benchmark.www-unix.mcs.anl.gov/pio-benchmark/. [10] W. Gropp, E. Lusk,

Borrill, Julian

2009-01-01T23:59:59.000Z

299

Do Benchmarks Matter? Do Measures Matter? A Study of Monthly Mutual Fund Returns  

E-Print Network (OSTI)

USING 279 MUTUAL FUNDS Benchmark: Time Series t-statistic:FOR 3 MEASURES WITH 4 BENCHMARKS USING 109 PASSIVE TEST120 MONTHLY OBSERVATIONS BENCHMARK: EW INDEX 10 FACTORS P8

Grinblatt, Mark; Titman, Sheridan

1991-01-01T23:59:59.000Z

300

Review of California and National Methods for Energy Performance Benchmarking of Commercial Buildings  

E-Print Network (OSTI)

benchmark the energy performance of California’s buildings.benchmark the energy performance of California’s buildings.benchmark with quantitative statistics guiding the building evaluation. Energy

Matson, Nance E.; Piette, Mary Ann

2005-01-01T23:59:59.000Z

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


301

Learn about benchmarking | ENERGY STAR Buildings & Plants  

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

Learn about benchmarking Learn about benchmarking Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Build an energy program Improve building and plant performance Earn the ENERGY STAR and other recognition Benchmark energy use Learn about benchmarking Use ENERGY STAR benchmarking tools ENERGY STAR in action Communicate and educate Find out who's partnered with ENERGY STAR

302

Benchmark energy use | ENERGY STAR Buildings & Plants  

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

Benchmark energy use Benchmark energy use Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Build an energy program Improve building and plant performance Earn the ENERGY STAR and other recognition Benchmark energy use Learn about benchmarking Use ENERGY STAR benchmarking tools ENERGY STAR in action Communicate and educate Find out who's partnered with ENERGY STAR

303

Energy Efficient Cities: Assessment Tool and Benchmarking Practices | Open  

Open Energy Info (EERE)

Efficient Cities: Assessment Tool and Benchmarking Practices Efficient Cities: Assessment Tool and Benchmarking Practices Jump to: navigation, search Tool Summary Name: Energy Efficient Cities: Assessment Tool and Benchmarking Practices Agency/Company /Organization: World Bank Sector: Energy Focus Area: Energy Efficiency, Buildings, Industry Topics: Resource assessment, Technology characterizations Resource Type: Publications, Guide/manual Website: www.esmap.org/esmap/sites/esmap.org/files/P115793_Energy%20Efficient%2 Energy Efficient Cities: Assessment Tool and Benchmarking Practices Screenshot References: EE Cities[1] Overview "Energy Efficient Cities: Assessment Tools and Benchmarking Practices has been developed from a careful review of selected papers presented during two ESMAP-sponsored sessions at the fifth World Bank Urban Research

304

Benchmarking Buildings to Prioritize Sites for Emissions Analysis |  

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

Benchmarking Buildings to Prioritize Sites for Emissions Analysis Benchmarking Buildings to Prioritize Sites for Emissions Analysis Benchmarking Buildings to Prioritize Sites for Emissions Analysis October 7, 2013 - 10:54am Addthis YOU ARE HERE Step 2 When actual energy use by building type is known, benchmarking the performance of those buildings to industry averages can help establish those with greatest opportunities for GHG reduction. Energy intensity can be used as a basis for benchmarking by building type and can be calculated using actual energy use, representative buildings, or available average estimates from agency energy records. Energy intensity should be compared to industry averages, such as the Commercial Buildings Energy Consumption Survey (CBECS) or an agency specific metered sample by location. When a program has access to metered data or representative building data,

305

Developing a Web-based Benchmarking Tool for Laboratories  

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

Developing a Web-based Benchmarking Tool for Laboratories Developing a Web-based Benchmarking Tool for Laboratories Speaker(s): Mayank Singh Date: November 22, 2002 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Dale Sartor (The EETD Applications Team includes: Satish Kumar, Paul Mathew, Dale Sartor, and Mayank Singh.) Developers of benchmarking tools are confronted with some common issues and some unique challenges. This presentation will describe the challenges faced by us while developing a web-based benchmarking tool for laboratories. Attributes such as the i) analytical and data visualization capability, and ii) flexibility and usability of the tool are common to any benchmarking effort. The various classification scheme and categories of laboratories, each with its own energy signature, posed a design challenge both for the database as well as data input forms,

306

Quantum benchmarks for pure single-mode Gaussian states  

E-Print Network (OSTI)

Teleportation and storage of continuous variable states of light and atoms are essential building blocks for the realization of large scale quantum networks. Rigorous validation of these implementations require identifying, and surpassing, benchmarks set by the most effective strategies attainable without the use of quantum resources. Such benchmarks have been established for special families of input states, like coherent states and particular subclasses of squeezed states. Here we solve the longstanding problem of defining quantum benchmarks for general pure Gaussian single-mode states with arbitrary phase, displacement, and squeezing, randomly sampled according to a realistic prior distribution. As a special case, we show that the fidelity benchmark for teleporting squeezed states with totally random phase and squeezing degree is 1/2, equal to the corresponding one for coherent states. We discuss the use of entangled resources to beat the benchmarks in experiments.

Giulio Chiribella; Gerardo Adesso

2013-08-09T23:59:59.000Z

307

Review of National and California Benchmarking Methods  

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

Review of California and National Methods for Review of California and National Methods for Energy-Performance Benchmarking of Commercial Buildings Nance E. Matson and Mary Ann Piette Ernest Orlando Lawrence Berkeley National Laboratory September 5 th , 2005 LBNL No. 57364 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned

308

A Power Benchmarking Framework for Network Devices  

E-Print Network (OSTI)

Abstract. Energy efficiency is becoming increasingly important in the operation of networking infrastructure, especially in enterprise and data center networks. Researchers have proposed several strategies for energy management of networking devices. However, we need a comprehensive characterization of power consumption by a variety of switches and routers to accurately quantify the savings from the various power savings schemes. In this paper, we first describe the hurdles in network power instrumentation and present a power measurement study of a variety of networking gear such as hubs, edge switches, core switches, routers and wireless access points in both stand-alone mode and a production data center. We build and describe a benchmarking suite that will allow users to measure and compare the power consumed for a large set of common configurations at any switch or router of their choice. We also propose a network energy proportionality index, which is an easily measurable metric, to compare power consumption behaviors of multiple devices.

Priya Mahadevan; Puneet Sharma; Sujata Banerjee

2009-01-01T23:59:59.000Z

309

Performance Evaluation and Benchmarking of Intelligent Systems  

Science Conference Proceedings (OSTI)

To design and develop capable, dependable, and affordable intelligent systems, their performance must be measurable. Scientific methodologies for standardization and benchmarking are crucial for quantitatively evaluating the performance of emerging robotic and intelligent systems technologies. There is currently no accepted standard for quantitatively measuring the performance of these systems against user-defined requirements; and furthermore, there is no consensus on what objective evaluation procedures need to be followed to understand the performance of these systems. The lack of reproducible and repeatable test methods has precluded researchers working towards a common goal from exchanging and communicating results, inter-comparing system performance, and leveraging previous work that could otherwise avoid duplication and expedite technology transfer. Currently, this lack of cohesion in the community hinders progress in many domains, such as manufacturing, service, healthcare, and security. By providing the research community with access to standardized tools, reference data sets, and open source libraries of solutions, researchers and consumers will be able to evaluate the cost and benefits associated with intelligent systems and associated technologies. In this vein, the edited book volume addresses performance evaluation and metrics for intelligent systems, in general, while emphasizing the need and solutions for standardized methods. To the knowledge of the editors, there is not a single book on the market that is solely dedicated to the subject of performance evaluation and benchmarking of intelligent systems. Even books that address this topic do so only marginally or are out of date. The research work presented in this volume fills this void by drawing from the experiences and insights of experts gained both through theoretical development and practical implementation of intelligent systems in a variety of diverse application domains. The book presents a detailed and coherent picture of state-of-the-art, recent developments, and further research areas in intelligent systems.

Madhavan, Raj [ORNL; Messina, Elena [National Institute of Standards and Technology (NIST); Tunstel, Edward [JHU Applied Physics Laboratory

2009-09-01T23:59:59.000Z

310

Historical Evaluation and Future Prediction of Eastern North American and Western Atlantic Extratropical Cyclones in the CMIP5 Models during the Cool Season  

Science Conference Proceedings (OSTI)

Extratropical cyclone track density, genesis frequency, deepening rate, and maximum intensity distributions over eastern North America and the western North Atlantic were analyzed for 15 models from phase 5 of the Coupled Model Intercomparison ...

Brian A. Colle; Zhenhai Zhang; Kelly A. Lombardo; Edmund Chang; Ping Liu; Minghua Zhang

2013-09-01T23:59:59.000Z

311

Evaluation of HEU-Beryllium Benchmark Experiments to Improve Computational Analysis of Space Reactors  

SciTech Connect

An assessment was previously performed to evaluate modeling capabilities and quantify preliminary biases and uncertainties associated with the modeling methods and data utilized in designing a nuclear reactor such as a beryllium-reflected, highly-enriched-uranium (HEU)-O2 fission surface power (FSP) system for space nuclear power. The conclusion of the previous study was that current capabilities could preclude the necessity of a cold critical test of the FSP; however, additional testing would reduce uncertainties in the beryllium and uranium cross-section data and the overall uncertainty in the computational models. A series of critical experiments using HEU metal were performed in the 1960s and 1970s in support of criticality safety operations at the Y-12 Plant. Of the hundreds of experiments, three were identified as fast-fission configurations reflected by beryllium metal. These experiments have been evaluated as benchmarks for inclusion in the International Handbook of Evaluated Criticality Safety Benchmark Experiments (IHECSBE). Further evaluation of the benchmark experiments was performed using the sensitivity and uncertainty analysis capabilities of SCALE 6. The data adjustment methods of SCALE 6 have been employed in the validation of an example FSP design model to reduce the uncertainty due to the beryllium cross section data.

John D. Bess; Keith C. Bledsoe; Bradley T. Rearden

2011-02-01T23:59:59.000Z

312

COBRA: A hybrid method for software cost estimation, benchmarking and risk assessment  

E-Print Network (OSTI)

Current cost estimation techniques have a number of drawbacks. For example, developing algorithmic models requires extensive past project data. Also, off-the-shelf models have been found to be difficult to calibrate but inaccurate without calibration. Informal approaches based on experienced estimators depend on estimators ’ availability and are not easily repeatable, as well as not being much more accurate than algorithmic techniques. In this paper we present a method for cost estimation that combines aspects of algorithmic and experiential approaches (referred to as COBRA, COst estimation, Benchmarking, and Risk Assessment). We find through a case study that cost estimates using COBRA show an average ARE of 0.09, and show that the results are easily usable for benchmarking and risk assessment purposes. 1

Lionel C. Bri; Lionel C. Bri; Khaled El Emam; Khaled El Emam; Frank Bomarius; Frank Bomarius

1998-01-01T23:59:59.000Z

313

COBRA: A Hybrid Method for Software Cost Estimation, Benchmarking, and Risk Assessment  

E-Print Network (OSTI)

Current cost estimation techniques have a number of drawbacks. For example, developing algorithmic models requires extensive past project data. Also, off-the-shelf models have been found to be difficult to calibrate but inaccurate without calibration. Informal approaches based on experienced estimators depend on estimators' availability and are not easily repeatable, as well as not being much more accurate than algorithmic techniques. In this paper we present a method for cost estimation that combines aspects of algorithmic and experiential approaches (referred to as COBRA, COst estimation, Benchmarking, and Risk Assessment). We find through a case study that cost estimates using COBRA show an average ARE of 0.09, and show that the results are easily usable for benchmarking and risk assessment purposes. 1 Introduction Project and program managers require accurate and reliable cost estimates to allocate and control project resources, and to make realistic bids on external contracts. ...

Lionel C. Briand; Khaled El Emam; Frank Bomarius

1997-01-01T23:59:59.000Z

314

IAEA CRP on HTGR Uncertainty Analysis: Benchmark Definition and Test Cases  

SciTech Connect

Uncertainty and sensitivity studies are essential elements of the reactor simulation code verification and validation process. Although several international uncertainty quantification activities have been launched in recent years in the LWR, BWR and VVER domains (e.g. the OECD/NEA BEMUSE program [1], from which the current OECD/NEA LWR Uncertainty Analysis in Modelling (UAM) benchmark [2] effort was derived), the systematic propagation of uncertainties in cross-section, manufacturing and model parameters for High Temperature Reactor (HTGR) designs has not been attempted yet. This paper summarises the scope, objectives and exercise definitions of the IAEA Coordinated Research Project (CRP) on HTGR UAM [3]. Note that no results will be included here, as the HTGR UAM benchmark was only launched formally in April 2012, and the specification is currently still under development.

Gerhard Strydom; Frederik Reitsma; Hans Gougar; Bismark Tyobeka; Kostadin Ivanov

2012-11-01T23:59:59.000Z

315

A nine year study of file system and storage benchmarking  

E-Print Network (OSTI)

Benchmarking is critical when evaluating performance, but is especially difficult for file and storage systems. Complex interactions between I/O devices, caches, kernel daemons, and other OS components result in behavior that is rather difficult to analyze. Moreover, systems have different features and optimizations, so no single benchmark is always suitable. The large variety of workloads that these systems experience in the real world also adds to this difficulty. In this article we survey 415 file system and storage benchmarks from 106 recent papers. We found that most popular benchmarks are flawed and many research papers do not provide a clear indication of true performance. We provide guidelines that we hope will improve future performance evaluations. To show how some widely used benchmarks can conceal or overemphasize overheads, we conducted a set of experiments. As a specific example, slowing down read operations on ext2 by a factor of 32 resulted in only a 2–5 % wall-clock slowdown in a popular compile benchmark. Finally, we discuss future work to improve file system and storage benchmarking.

Avishay Traeger; Erez Zadok; Nikolai Joukov; Charles P. Wright

2008-01-01T23:59:59.000Z

316

Establishing Benchmarks for DOE Commercial Building R&D and Program Evaluation: Preprint  

SciTech Connect

The U.S. Department of Energy (DOE) Building Technologies Program and the DOE research laboratories conduct a great deal of research on building technologies. However, differences in models and simulation tools used by various research groups make it difficult to compare results among studies. The authors have developed a set of 22 hypothetical benchmark buildings and weighting factors for nine locations across the country, for a total of 198 buildings.

Deru, M.; Griffith, B.; Torcellini, P.

2006-06-01T23:59:59.000Z

317

REVIEW OF RESULTS FOR THE OECD/NEA PHASE VII BENCHMARK: STUDY OF SPENT FUEL COMPOSITIONS FOR LONG TERM DISPOSAL  

Science Conference Proceedings (OSTI)

This paper summarizes the problem specification and compares participants results for the OECD/NEA/WPNCS Expert Group on Burn-up Credit Criticality Safety Phase VII Benchmark Study of Spent Fuel Compositions for Long-Term Disposal. The Phase VII benchmark was developed to study the ability of relevant computer codes and associated nuclear data to predict spent fuel isotopic compositions and corresponding keff values in a cask configuration over the time duration relevant to spent nuclear fuel (SNF) disposal. The benchmark was divided into two sets of calculations: (1) decay calculations out to 1,000,000 years for provided pressurized-water-reactor (PWR) UO2 discharged fuel compositions and (2) burnup credit criticality calculations for a representative cask model at selected time steps. Contributions from 15 organizations and companies in 10 countries were submitted to the Phase VII benchmark exercise. This paper provides a description of the Phase VII benchmark and detailed comparisons of the participants isotopic compositions and keff values that were calculated with a diversity of computer codes and nuclear data sets. Differences observed in the calculated time-dependent nuclide densities are attributed to different decay data or code-specific numerical approximations. The variability of the keff results is consistent with the evaluated uncertainty associated with cross-section data.

Radulescu, Georgeta [ORNL; Wagner, John C [ORNL

2011-01-01T23:59:59.000Z

318

European Lean Gasoline Direct Injection Vehicle Benchmark  

DOE Green Energy (OSTI)

Lean Gasoline Direct Injection (LGDI) combustion is a promising technical path for achieving significant improvements in fuel efficiency while meeting future emissions requirements. Though Stoichiometric Gasoline Direct Injection (SGDI) technology is commercially available in a few vehicles on the American market, LGDI vehicles are not, but can be found in Europe. Oak Ridge National Laboratory (ORNL) obtained a European BMW 1-series fitted with a 2.0l LGDI engine. The vehicle was instrumented and commissioned on a chassis dynamometer. The engine and after-treatment performance and emissions were characterized over US drive cycles (Federal Test Procedure (FTP), the Highway Fuel Economy Test (HFET), and US06 Supplemental Federal Test Procedure (US06)) and steady state mappings. The vehicle micro hybrid features (engine stop-start and intelligent alternator) were benchmarked as well during the course of that study. The data was analyzed to quantify the benefits and drawbacks of the lean gasoline direct injection and micro hybrid technologies from a fuel economy and emissions perspectives with respect to the US market. Additionally that data will be formatted to develop, substantiate, and exercise vehicle simulations with conventional and advanced powertrains.

Chambon, Paul H [ORNL; Huff, Shean P [ORNL; Edwards, Kevin Dean [ORNL; Norman, Kevin M [ORNL; Prikhodko, Vitaly Y [ORNL; Thomas, John F [ORNL

2011-01-01T23:59:59.000Z

319

Analysisi Benchmark of the Single Heater Test  

SciTech Connect

The Single Heater Test (SHT) is the first of three in-situ thermal tests included in the site characterization program for the potential nuclear waste monitored geologic repository at Yucca Mountain. The heating phase of the SHT started in August 1996 and was concluded in May 1997 after 9 months of heating. Cooling continued until January 1998, at which time post-test characterization of the test block commenced. Numerous thermal, hydrological, mechanical, and chemical sensors monitored the coupled processes in the unsaturated fractured rock mass around the heater (CRWMS M&O 1999). The objective of this calculation is to benchmark a numerical simulation of the rock mass thermal behavior against the extensive data set that is available from the thermal test. The scope is limited to three-dimensional (3-D) numerical simulations of the computational domain of the Single Heater Test and surrounding rock mass. This calculation supports the waste package thermal design methodology, and is developed by Waste Package Department (WPD) under Office of Civilian Radioactive Waste Management (OCRWM) procedure AP-3.12Q, Revision 0, ICN 3, BSCN 1, Calculations.

H.M. Wade; H. Marr; M.J. Anderson

2006-07-27T23:59:59.000Z

320

Historical Procurement Information- by Location  

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

Small business contracing is difficult to navigate. We've built the Small Business Opportunities Tool to identify historical records of what the Department of Energy has purchased, which you can...

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


321

Benchmarking Optimization Software with COPS 3.0  

E-Print Network (OSTI)

May 11, 2004 ... Benchmarking Optimization Software with COPS 3.0. Elizabeth D. Dolan (dolan * **at*** cs.unc.edu) Jorge J. More' (more ***at*** mcs.anl.gov)

322

An Independent Benchmarking of SDP and SOCP Solvers  

E-Print Network (OSTI)

Jul 23, 2001 ... The codes were run on a standard platform and on all the benchmark problems provided by the organizers of the challenge. A total of ten codes ...

323

The Extreme Benchmark Suite: Measuring High-Performance Embedded Systems  

E-Print Network (OSTI)

The Extreme Benchmark Suite (XBS) is designed to support performance measurement of highly parallel “extreme ” processors, many of which are designed to replace custom hardware implementations. XBS is designed to avoid many of the problems that occur when using existing benchmark suites with nonstandard and experimental architectures. In particular, XBS is intended to provide a fair comparison of a wide range of architectures, from general-purpose processors to hard-wired ASIC implementations. XBS has a clean modular structure to reduce porting effort, and is designed to be usable with slow cycle-accurate simulators. This work presents the motivation for the creation of XBS and describes in detail the XBS framework. Several benchmarks implemented with this framework are discussed, and these benchmarks are used to compare a standard platform, an experimental architecture, and custom

Steven Gerding; Krste Asanovi?

2005-01-01T23:59:59.000Z

324

Towards Systematic Benchmarking in Answer Set Programming: The Dagstuhl Initiative  

E-Print Network (OSTI)

for di#erent designs of a benchmarking and testing environment for ASP, we used the systems competition at the Dagstuhl Seminar. The following answer set programming systems participated in that initial competition. -- aspps, University of Kentucky, -- assat, UST Hong Kong, -- cmodels, University of Texas, -- dlv, Technical University of Vienna, -- smodels, Technical University of Helsinki. # A#liated with the School of Computing Science at Simon Fraser University, Burnaby, Canada. The di#culty that emerged right away was that these systems do not have a common input language nor do they agree on all functionalities. This led to the introduction of three di#erent (major) categories of benchmarks: Ground: Ground instances of coded benchmarks. As of now, these ground instances are produced by lparse or by the dlv grounder. These benchmarks can be used to test the performance of ASP solvers accepting as input ground (propositional) programs in output formats of lparse or the dlv

Paul Borchert; Christian Anger; Torsten Schaub; Miroslaw Truszczynski

2004-01-01T23:59:59.000Z

325

Spread narrows between Brent and WTI crude oil benchmark prices ...  

U.S. Energy Information Administration (EIA)

Spot prices for benchmarks West Texas Intermediate (WTI) and North Sea Brent crude oil neared parity of around $109 per barrel July 19, and the Brent-WTI spread was ...

326

The Extreme Benchmark Suite : measuring high-performance embedded systems  

E-Print Network (OSTI)

The Extreme Benchmark Suite (XBS) is designed to support performance measurement of highly parallel "extreme" processors, many of which are designed to replace custom hardware implementations. XBS is designed to avoid many ...

Gerding, Steven (Steven Bradley)

2005-01-01T23:59:59.000Z

327

Benchmarking of OEM Hybrid Electric Vehicles at NREL: Milestone Report  

DOE Green Energy (OSTI)

A milestone report that describes the NREL's progress and activities related to the DOE FY2001 Annual Operating Plan milestone entitled ''Benchmark 2 new production or pre-production hybrids with ADVISOR.''

Kelly, K. J.; Rajagopalan, A.

2001-10-26T23:59:59.000Z

328

A benchmark study on the thermal conductivity of nanofluids  

E-Print Network (OSTI)

This article reports on the International Nanofluid Property Benchmark Exercise, or INPBE, in which the thermal conductivity of identical samples of colloidally stable dispersions of nanoparticles or “nanofluids,” was ...

Buongiorno, Jacopo

329

Benchmarking the Mean Streets of NYC and Beyond  

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

Benchmarking the Mean Streets of NYC and Beyond Speaker(s): Conor Laver Date: September 30, 2013 - 12:00pm - 1:00pm Location: 90-3122 Seminar HostPoint of Contact: Louis-Benoit...

330

Building America Research Benchmark Definition: Updated December 2009  

SciTech Connect

The Benchmark represents typical construction at a fixed point in time so it can be used as the basis for Building America's multi-year energy savings goals without chasing a 'moving target.'

Hendron, R.; Engebrecht, C.

2010-01-01T23:59:59.000Z

331

The Implementation of an Explicit Charging and Discharge Lightning Scheme within the WRF-ARW Model: Benchmark Simulations of a Continental Squall Line, a Tropical Cyclone, and a Winter Storm  

Science Conference Proceedings (OSTI)

This work describes the recent implementation of explicit lightning physics within the Weather Research and Forecasting (WRF) Model. Charging of hydrometeors consists of five distinct noninductive parameterizations, polarization of cloud water, ...

Alexandre O. Fierro; Edward R. Mansell; Donald R. MacGorman; Conrad L. Ziegler

2013-07-01T23:59:59.000Z

332

ASP Historic Site 2011 | Brookhaven National Lab  

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

BNL Home APS Historic Site 2011 The American Physical Society (APS) will commemorate Brookhaven National Laboratory as a historic site in the advancement of the field of physics....

333

Department of Energy Research Opportunities for Historically...  

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

Department of Energy Research Opportunities for Historically Black Colleges and Universities Department of Energy Research Opportunities for Historically Black Colleges and...

334

Improving Forecasting: A plea for historical retrospectives  

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

Improving Forecasting: A plea for historical retrospectives Title Improving Forecasting: A plea for historical retrospectives Publication Type Journal Article Year of Publication...

335

Historical Natural Gas Annual - 1930 Through 2000  

Annual Energy Outlook 2012 (EIA)

2000 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at...

336

SIMULATE-E benchmarking of pilgrim nuclear power station  

Science Conference Proceedings (OSTI)

The CASMO-SIMULATE-E methodology is bench-marked to qualify its ability to determine power distributions and critical eigenvalues, k/sub eff/. Once the biases and uncertainties in this methodology are quantified, CASMO/SIMULATE-E will be utilized to generate reload fuel patterns and control rod sequences, and to provide operational support for Pilgrim Nuclear Power Station (PNPS). Only the results of the hot SIMULATE-E benchmarking are presented here.

DeWitt, G.L.; Hu, L.C.; Antonopoulos, P.T.

1986-01-01T23:59:59.000Z

337

Evolving e-government benchmarking to better cover technology development and emerging societal needs  

Science Conference Proceedings (OSTI)

Many international e-government benchmarks seek to measure progress towards various versions of a digital society, and in this endeavor include a component of e-government. But because comparable international e-government data are scarce, most reports ... Keywords: United Nations, benchmarking framework, benchmarking tools, benchmarking trends, e-government, technology trends

Kim Andreasson; Jeremy Millard; Mikael Snaprud

2012-10-01T23:59:59.000Z

338

Strategies for energy benchmarking in cleanrooms and laboratory-type facilities  

E-Print Network (OSTI)

benchmark by the actual energy consumption (Figure 4). The effectiveness metrics from multiple buildings

Sartor, Dale; Piette, Mary Ann; Tschudi, William; Fok, Stephen

2000-01-01T23:59:59.000Z

339

PIA - Historical Data for Legal Organizations | Department of...  

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

Historical Data for Legal Organizations PIA - Historical Data for Legal Organizations PIA - Historical Data for Legal Organizations PIA - Historical Data for Legal Organizations...

340

Finding benchmark brown dwarfs to probe the IMF as a function of time  

E-Print Network (OSTI)

Using a simulated disk brown dwarf (BD) population, we find that new large area infrared surveys are expected to identify enough BDs covering wide enough mass--age ranges to potentially measure the mass function down to ~0.03Mo, and the BD formation history out to 10 Gyr, at a level capable of establishing if BD formation follows star formation. We suggest these capabilities are best realised by spectroscopic calibration of BD properties (Teff, g and [M/H]) which, when combined with a measured luminosity and an evolutionary model can give BD mass and age relatively independent of BD atmosphere models. Such calibration requires an empirical understanding of how BD spectra are affected by variations in these properties, and thus the identification and study of "benchmark BDs" whose age and composition can be established independently. We identify the best sources of benchmark BDs as young open cluster members, moving group members, and wide (>1000AU) BD companions to both subgiant stars and high mass white dwarfs (WDs). We have used 2MASS to measure a wide L dwarf companion fraction of 2.7(+0.7/-0.5)%, which equates to a BD companion fraction of 34(+9/-6)% for an alpha~1 companion mass function. Using this value we simulate populations of wide BD binaries, and estimate that 80(+21/-14) subgiant--BD binaries, and 50(+13/-10) benchmark WD--BD binaries could be identified using current and new facilities. The WD--BD binaries should all be identifiable using the Large Area Survey component of UKIDSS combined with Sloan. Discovery of the subgiant--BD binaries will require a NIR imaging campaign around a large (~900) sample of Hipparcos subgiants. If identified, spectral studies of these benchmark brown dwarfs could reveal the spectral sensitivities across the Teff, g and [M/H] space probed by new surveys.

D. J. Pinfield; H. R. A. Jones; P. W. Lucas; T. R. Kendall; S. L. Folkes; A. C. Day-Jones; R. J. Chappelle; I. A. Steele

2006-03-13T23:59:59.000Z

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


341

A Framework for Historic Bridge Preservation  

E-Print Network (OSTI)

In an inevitably occurring process, bridges possessing historic, artistic, and engineering significance deteriorate and must be maintained and rehabilitated in order to be kept in service. Ideally, all potentially significant bridges would be properly preserved and continue to beautify and bring character to their surroundings for years to come. However, funding is currently limited for transportation projects in general, and even more so for historic bridge preservation, which some may consider less critical in comparison to other transportation needs. Because of this limitation on resources, it is important that bridge-owning agencies use proper planning and management strategies in order to make the best use of available funding. This thesis presents a framework designed to assist agencies in this process. The framework is devised specifically for TxDOT for use in Tarrant County, Texas, but can be used as a model for agencies anywhere with some modifications to fit the inventory under evaluation. Included in the framework are a methodology for prioritization of bridges within an inventory, guidance on financial and legal procedures, identification of potential funding sources, summary and review of condition assessment practices and bridge mitigation strategies, a template for individual bridge preservation plans, and a framework for resource allocation within a bridge inventory. It can be concluded from this research that early detection of defects, preventive maintenance, condition assessment beyond routine inspection, adjustment of evaluation methodology, and use of engineering judgment when using numerical evaluation methods are critical components of proper management of historic bridges.

Puls, Eric Mark

2013-08-01T23:59:59.000Z

342

Historical Natural Gas Annual - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Historical Natural Gas Annual. 1996: Published October 1997: 1997: Published October 1998: 1998: Published October 1999

343

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

SciTech Connect

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.

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

2013-09-01T23:59:59.000Z

344

Strategies for energy benchmarking in cleanrooms and laboratory-type facilities  

SciTech Connect

Buildings with cleanrooms and laboratories are growing in terms of total floor area and energy intensity. This building type is common in institutions such as universities and in many industries such as microelectronics and biotechnology. These buildings, with high ventilation rates and special environmental considerations, consume from 4 to 100 times more energy per square foot than conventional commercial buildings. Owners and operators of such facilities know they are expensive to operate, but have little way of knowing if their facilities are efficient or inefficient. A simple comparison of energy consumption per square foot is of little value. A growing interest in benchmarking is also fueled by: A new U.S. Executive Order removing the exemption of federal laboratories from energy efficiency goals, setting a 25% savings target, and calling for baseline guidance to measure progress; A new U.S. EPA and U.S. DOE initiative, Laboratories for the 21st Century, establishing voluntary performance goals and criteria for recognition; and A new PG and E market transformation program to improve energy efficiency in high tech facilities, including a cleanroom energy use benchmarking project. This paper identifies the unique issues associated with benchmarking energy use in high-tech facilities. Specific options discussed include statistical comparisons, point-based rating systems, model-based techniques, and hierarchical end-use and performance-metrics evaluations.

Sartor, Dale; Piette, Mary Ann; Tschudi, William; Fok, Stephen

2000-06-01T23:59:59.000Z

345

Interim report on verification and benchmark testing of the NUFT computer code  

Science Conference Proceedings (OSTI)

This interim report presents results of work completed in the ongoing verification and benchmark testing of the NUFT (Nonisothermal Unsaturated-saturated Flow and Transport) computer code. NUFT is a suite of multiphase, multicomponent models for numerical solution of thermal and isothermal flow and transport in porous media, with application to subsurface contaminant transport problems. The code simulates the coupled transport of heat, fluids, and chemical components, including volatile organic compounds. Grid systems may be cartesian or cylindrical, with one-, two-, or fully three-dimensional configurations possible. In this initial phase of testing, the NUFT code was used to solve seven one-dimensional unsaturated flow and heat transfer problems. Three verification and four benchmarking problems were solved. In the verification testing, excellent agreement was observed between NUFT results and the analytical or quasianalytical solutions. In the benchmark testing, results of code intercomparison were very satisfactory. From these testing results, it is concluded that the NUFT code is ready for application to field and laboratory problems similar to those addressed here. Multidimensional problems, including those dealing with chemical transport, will be addressed in a subsequent report.

Lee, K.H.; Nitao, J.J. [Lawrence Livermore National Lab., CA (United States); Kulshrestha, A. [Weiss Associates, Emeryville, CA (United States)

1993-10-01T23:59:59.000Z

346

Mesoscale Benchmark Demonstration Problem 1: Mesoscale Simulations of Intra-granular Fission Gas Bubbles in UO2 under Post-irradiation Thermal Annealing  

SciTech Connect

A study was conducted to evaluate the capabilities of different numerical methods used to represent microstructure behavior at the mesoscale for irradiated material using an idealized benchmark problem. The purpose of the mesoscale benchmark problem was to provide a common basis to assess several mesoscale methods with the objective of identifying the strengths and areas of improvement in the predictive modeling of microstructure evolution. In this work, mesoscale models (phase-field, Potts, and kinetic Monte Carlo) developed by PNNL, INL, SNL, and ORNL were used to calculate the evolution kinetics of intra-granular fission gas bubbles in UO2 fuel under post-irradiation thermal annealing conditions. The benchmark problem was constructed to include important microstructural evolution mechanisms on the kinetics of intra-granular fission gas bubble behavior such as the atomic diffusion of Xe atoms, U vacancies, and O vacancies, the effect of vacancy capture and emission from defects, and the elastic interaction of non-equilibrium gas bubbles. An idealized set of assumptions was imposed on the benchmark problem to simplify the mechanisms considered. The capability and numerical efficiency of different models are compared against selected experimental and simulation results. These comparisons find that the phase-field methods, by the nature of the free energy formulation, are able to represent a larger subset of the mechanisms influencing the intra-granular bubble growth and coarsening mechanisms in the idealized benchmark problem as compared to the Potts and kinetic Monte Carlo methods. It is recognized that the mesoscale benchmark problem as formulated does not specifically highlight the strengths of the discrete particle modeling used in the Potts and kinetic Monte Carlo methods. Future efforts are recommended to construct increasingly more complex mesoscale benchmark problems to further verify and validate the predictive capabilities of the mesoscale modeling methods used in this study.

Li, Yulan; Hu, Shenyang Y.; Montgomery, Robert; Gao, Fei; Sun, Xin; Tonks, Michael; Biner, Bullent; Millet, Paul; Tikare, Veena; Radhakrishnan, Balasubramaniam; Andersson , David

2012-04-11T23:59:59.000Z

347

Weatherization and Intergovernmental Program: Historic Preservation  

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

Program Guidance Program Guidance Site Map Printable Version Share this resource Send a link to Weatherization and Intergovernmental Program: Historic Preservation to someone by E-mail Share Weatherization and Intergovernmental Program: Historic Preservation on Facebook Tweet about Weatherization and Intergovernmental Program: Historic Preservation on Twitter Bookmark Weatherization and Intergovernmental Program: Historic Preservation on Google Bookmark Weatherization and Intergovernmental Program: Historic Preservation on Delicious Rank Weatherization and Intergovernmental Program: Historic Preservation on Digg Find More places to share Weatherization and Intergovernmental Program: Historic Preservation on AddThis.com... Closeout Guidance Recovery Act Monitoring & Reporting

348

Historical Resources | Department of Energy  

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

Resources Resources Historical Resources Historical Resources The Department of Energy maintains and makes accessible to the general public a wide variety of historical resources. These include published and online histories of the Department and its predecessor agencies and records, exhibits, museums, and tours available online and at various locations both within and outside the Department. The Department's Office of History and Heritage Resources (OHHR) serves as the institutional memory for the Department. Overviews of the Department produced by OHHR include the online only A Brief History of the Department of Energy and the more in-depth Department of Energy Timeline as well as the published Department of Energy, 1977-1994: A Summary History. The Department is the lineal descendent of several predecessor agencies,

349

Characterization of Computational Grid Resources Using Low-level Benchmarks  

E-Print Network (OSTI)

An important factor that needs to be taken into account by end-users and systems (schedulers, resource brokers, policy brokers) when mapping applications to the Grid, is the performance capacity of hardware resources attached to the Grid and made available through its Virtual Organizations (VOs). In this paper, we examine the problem of characterizing the performance capacity of Grid resources using benchmarking. We examine the conditions under which such characterization experiments can be implemented in a Grid setting and present the challenges that arise in this context. We specify a small number of performance metrics and propose a suite of micro-benchmarks to estimate these metrics for clusters that belong to large Virtual Organizations. We describe GridBench, a tool developed to administer benchmarking experiments, publish their results, and produce graphical representations of their metrics. We describe benchmarking experiments conducted with, and published through GridBench, and show how they can help end-users assess the performance capacity of resources that belong to a target Virtual Organization. Finally, we examine the advantages of this approach over solutions implemented currently in existing Grid infrastructures. We conclude that it is essential to provide benchmarking services in the Grid infrastructure, in order to enable the attachment of performance-related metadata to resources belonging to Virtual Organizations and the retrieval of such metadata by end-users and other Grid systems. 1

George Tsouloupas; Marios Dikaiakos

2004-01-01T23:59:59.000Z

350

The Role of Benchmarking in Promoting Strong Energy Management Systems  

E-Print Network (OSTI)

The significance of formalized energy management practices and programs in driving and sustaining energy efficiency improvements within the industrial sector has become more widely recognized over the past several years. The release of the ISO 50001 energy management standard will also further elevate the role of energy management systems. For over the past 10 years, the US EPA's ENERGY STAR Commercial and Industrial program have focused on promoting and supporting the development of strong corporate management programs. A key aspect of facilitating the establishment of energy management programs has been the development of benchmarking tools that help companies evaluate the energy performance and practices. This paper will examine some of the lessons learned in developing both quantitative and qualitative energy management benchmarking tools and the importance of establishing good energy performance indicators. The paper will examine the pros and cons of different types of quantitative energy performance benchmarks. The value of qualitative benchmarking tools to gauge management practices will also be discussed. Lastly, recommendations for how to further the development energy benchmarks shall be presented.

Tunnessen, W.

2010-01-01T23:59:59.000Z

351

Supersymmetric Benchmarks with Non-Universal Scalar Masses or Gravitino Dark Matter  

E-Print Network (OSTI)

We propose and examine a new set of benchmark supersymmetric scenarios, some of which have non-universal Higgs scalar masses (NUHM) and others have gravitino dark matter (GDM). The scalar masses in these models are either considerably larger or smaller than the narrow range allowed for the same gaugino mass m_{1/2} in the constrained MSSM (CMSSM) with universal scalar masses m_0 and neutralino dark matter. The NUHM and GDM models with larger m_0 may have large branching ratios for Higgs and/or $Z$ production in the cascade decays of heavier sparticles, whose detection we discuss. The phenomenology of the GDM models depends on the nature of the next-to-lightest supersymmetric particle (NLSP), which has a lifetime exceeding 10^4 seconds in the proposed benchmark scenarios. In one GDM scenario the NLSP is the lightest neutralino \\chi, and the supersymmetric collider signatures are similar to those in previous CMSSM benchmarks, but with a distinctive spectrum. In the other GDM scenarios based on minimal supergravity (mSUGRA), the NLSP is the lighter stau slepton {\\tilde \\tau}_1, with a lifetime between ~ 10^4 and 3 X 10^6 seconds. Every supersymmetric cascade would end in a {\\tilde \\tau}_1, which would have a distinctive time-of-flight signature. Slow-moving {\\tilde \\tau}_1's might be trapped in a collider detector or outside it, and the preferred detection strategy would depend on the {\\tilde \\tau}_1 lifetime. We discuss the extent to which these mSUGRA GDM scenarios could be distinguished from gauge-mediated models.

A. De Roeck; J. Ellis; F. Gianotti; F. Moortgat; K. A. Olive; L. Pape

2005-08-18T23:59:59.000Z

352

Benchmarking Building Performance & the Australian Building Greenhouse  

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

Benchmarking Building Performance & the Australian Building Greenhouse Benchmarking Building Performance & the Australian Building Greenhouse Rating Scheme Speaker(s): Paul Bannister Date: August 21, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Stephen Selkowitz (Two topics): Benchmarking Building Performance: In a variety of voluntary and regulatory initiatives around the globe, including the introduction of the European Building Performance Directive, the question of how to assess the performance of commercial buildings has become a critical issue. There are presently a number of initiatives for the assessment of actual building performance internationally, including in particular US Energy Star Buildings rating tools and the Australian Building Greenhouse Rating scheme. These schemes seek to assess building energy performance on the

353

System Utilization Benchmark on the Cray T3E  

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

Utilization Benchmark on the Cray T3E Utilization Benchmark on the Cray T3E and IBM SP Adrian Wong, Leonid Oliker, William Kramer, Teresa Kaltz, and David Bailey National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, CA 94720, USA {atwong, loliker, wtkramer, tlkaltz, dhbailey}@lbl.gov Abstract. Obtaining maximum utilization of parallel systems continues to be an active area of research and development. This article outlines a new benchmark, called the Eflectiwe System Performance (ESP) test, designed to provide a utilization metric that is transferable between sys- tems and illuminate the effects of various scheduling parameters. Results with discussion are presented for the Cray T3E and IBM SP systems to- gether with insights obtained from simulation.

354

Use Energy Information Services to Benchmark with ENERGY STAR  

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

Energy Information Services to Energy Information Services to Benchmark with ENERGY STAR ® Tracking Building Energy Performance Tracking a building's energy performance provides a building owner or manager with critical knowledge to make improvements to the building's operations and reduce energy consumption. Energy information services offer a variety of ways to help companies obtain and organize this valuable energy information. Energy information service providers that have partnered with ENERGY STAR offer an additional tool to assess the energy performance of buildings: automated benchmarking. ENERGY STAR is the national symbol for saving the environment through energy efficiency, recognized by more than 65 percent of the American public. Automated benchmarking allows energy information service providers to provide their customers with ENERGY STAR

355

Building America Research Benchmark Definition, Updated December 15, 2006  

Science Conference Proceedings (OSTI)

To track progress toward aggressive multi-year whole-house energy savings goals of 40-70% and onsite power production of up to 30%, DOE's Residential Buildings Program and NREL developed the Building America Research Benchmark in consultation with the Building America industry teams. The Benchmark is generally consistent with mid-1990s standard practice, as reflected in the Home Energy Rating System (HERS) Technical Guidelines (RESNET 2002), with additional definitions that allow the analyst to evaluate all residential end-uses, an extension of the traditional HERS rating approach that focuses on space conditioning and hot water. Unlike the reference homes used for HERS, EnergyStar, and most energy codes, the Benchmark represents typical construction at a fixed point in time so it can be used as the basis for Building America's multi-year energy savings goals without the complication of chasing a ''moving target''.

Hendron, R.

2007-01-01T23:59:59.000Z

356

Robust Extraction of Tomographic Information via Randomized Benchmarking  

E-Print Network (OSTI)

We describe how randomized benchmarking can be used to reconstruct the unital part of any trace-preserving quantum map, which in turn is sufficient for the full characterization of any unitary evolution, or more generally, any unital trace-preserving evolution. This approach inherits randomized benchmarking's robustness to preparation and measurement imperfections, therefore avoiding systematic errors caused by these imperfections. We also extend these techniques to efficiently estimate the average fidelity of a quantum map to unitary maps outside of the Clifford group. The unitaries we consider include operations commonly used to achieve universal quantum computation in a fault-tolerant setting. In addition, we rigorously bound the time and sampling complexities of randomized benchmarking procedures.

Shelby Kimmel; Marcus P. da Silva; Colm A. Ryan; Blake R. Johnson; Thomas Ohki

2013-06-10T23:59:59.000Z

357

VENUS-F: A fast lead critical core for benchmarking  

Science Conference Proceedings (OSTI)

The zero-power thermal neutron water-moderated facility VENUS at SCK-CEN has been extensively used for benchmarking in the past. In accordance with GEN-IV design tasks (fast reactor systems and accelerator driven systems), the VENUS facility was modified in 2007-2010 into the fast neutron facility VENUS-F with solid core components. This paper introduces the projects GUINEVERE and FREYA, which are being conducted at the VENUS-F facility, and it presents the measurement results obtained at the first critical core. Throughout the projects other fast lead benchmarks also will be investigated. The measurement results of the different configurations can all be used as fast neutron benchmarks. (authors)

Kochetkov, A.; Wagemans, J.; Vittiglio, G. [SCK.CEN, Boeretang 200, 2400 Mol (Belgium)

2011-07-01T23:59:59.000Z

358

Benchmarking Variable Cost Performance in an Industrial Power Plant  

E-Print Network (OSTI)

One of the most perplexing problems for industrial power plants committed to improving competitiveness is measuring variable cost performance over time. Because variable costs like fuel and electricity represent the overwhelming majority of power plant expenses, it is imperative to develop and deploy a tool that can help plants benchmark operating performance. This paper introduces a benchmarking methodology designed to meet this need. The "Energy Conversion Index" (ECI) ratios the "value" of utilities exported from the power plant to the actual cost of the fuel and electricity required to produce them, generating a single number or "index." Variable cost performance is benchmarked by comparing the index from one period of time to the index of another comparable period of time. Savings (or costs) attributable to excellent (or poor) performance can easily be calculated by using the former period's index to project the current period's cost.

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

1998-04-01T23:59:59.000Z

359

Criticality benchmark comparisons leading to cross-section upgrades  

Science Conference Proceedings (OSTI)

For several years criticality benchmark calculations with COG. COG is a point-wise Monte Carlo code developed at Lawrence Livermore National Laboratory (LLNL). It solves the Boltzmann equation for the transport of neutrons and photons. The principle consideration in developing COG was that the resulting calculation would be as accurate as the point-wise cross-sectional data, since no physics computational approximations were used. The objective of this paper is to report on COG results for criticality benchmark experiments in concert with MCNP comparisons which are resulting in corrections an upgrades to the point-wise ENDL cross-section data libraries. Benchmarking discrepancies reported here indicated difficulties in the Evaluated Nuclear Data Livermore (ENDL) cross-sections for U-238 at thermal neutron energy levels. This led to a re-evaluation and selection of the appropriate cross-section values from several cross-section sets available (ENDL, ENDF/B-V). Further cross-section upgrades anticipated.

Alesso, H.P.; Annese, C.E.; Heinrichs, D.P.; Lloyd, W.R.; Lent, E.M.

1993-03-01T23:59:59.000Z

360

Building America Research Benchmark Definition, Updated December 29, 2004  

DOE Green Energy (OSTI)

To track progress toward aggressive multi-year whole-house energy savings goals of 40-70% and onsite power production of up to 30%, the U.S. Department of Energy (DOE) Residential Buildings Program and the National Renewable Energy Laboratory (NREL) developed the Building America Research Benchmark in consultation with the Building America industry teams. The Benchmark is generally consistent with mid-1990s standard practice, as reflected in the Home Energy Rating System (HERS) Technical Guidelines (RESNET 2002), with additional definitions that allow the analyst to evaluate all residential end-uses, an extension of the traditional HERS rating approach that focuses on space conditioning and hot water. A series of user profiles, intended to represent the behavior of a ''standard'' set of occupants, was created for use in conjunction with the Benchmark.

Hendron, R.

2005-02-01T23:59:59.000Z

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


361

Current Reactor Physics Benchmark Activities at the Idaho National Laboratory  

SciTech Connect

The International Reactor Physics Experiment Evaluation Project (IRPhEP) [1] and the International Criticality Safety Benchmark Evaluation Project (ICSBEP) [2] were established to preserve integral reactor physics and criticality experiment data for present and future research. These valuable assets provide the basis for recording, developing, and validating our integral nuclear data, and experimental and computational methods. These projects are managed through the Idaho National Laboratory (INL) and the Organisation for Economic Co-operation and Development Nuclear Energy Agency (OECD-NEA). Staff and students at the Department of Energy - Idaho (DOE-ID) and INL are engaged in the development of benchmarks to support ongoing research activities. These benchmarks include reactors or assemblies that support Next Generation Nuclear Plant (NGNP) research, space nuclear Fission Surface Power System (FSPS) design validation, and currently operational facilities in Southeastern Idaho.

John D. Bess; Margaret A. Marshall; Mackenzie L. Gorham; Joseph Christensen; James C. Turnbull; Kim Clark

2011-11-01T23:59:59.000Z

362

Benchmarking and Disclosure: Lessons from Leading Cities | ENERGY STAR  

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

Benchmarking and Disclosure: Lessons from Leading Cities Benchmarking and Disclosure: Lessons from Leading Cities Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources

363

Building Energy Use Benchmarking Guidance | ENERGY STAR Buildings & Plants  

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

Use Benchmarking Guidance Use Benchmarking Guidance Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

364

Shear Strength Measurement Benchmarking Tests for K Basin Sludge Simulants  

SciTech Connect

Equipment development and demonstration testing for sludge retrieval is being conducted by the K Basin Sludge Treatment Project (STP) at the MASF (Maintenance and Storage Facility) using sludge simulants. In testing performed at the Pacific Northwest National Laboratory (under contract with the CH2M Hill Plateau Remediation Company), the performance of the Geovane instrument was successfully benchmarked against the M5 Haake rheometer using a series of simulants with shear strengths (?) ranging from about 700 to 22,000 Pa (shaft corrected). Operating steps for obtaining consistent shear strength measurements with the Geovane instrument during the benchmark testing were refined and documented.

Burns, Carolyn A.; Daniel, Richard C.; Enderlin, Carl W.; Luna, Maria; Schmidt, Andrew J.

2009-06-10T23:59:59.000Z

365

ENERGY STAR Building Upgrade Manual Chapter 2: Benchmarking | ENERGY STAR  

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

2: Benchmarking 2: Benchmarking Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder Technical documentation

366

COMET solutions to whole core CANDU-6 benchmark problems  

SciTech Connect

In this paper, the coarse mesh transport code COMET is used to solve CANDU-6 benchmark problems in two and three dimensional geometry. These problems are representative of a simplified quarter core reactor model. The COMET solutions, the core eigenvalue and the fuel pin fission density distribution, are compared to those from the Monte Carlo code MCNP using two-group cross sections. COMET decomposes the core volume into a set of non-overlapping sub-volumes (coarse meshes) and uses pre-computed heterogeneous response functions that are constructed using Legendre polynomials as boundary conditions to generate a user selected whole core solution (e.g., the core eigenvalue and fuel pin fission density distribution). These response functions are pre-computed by performing fixed source calculations with a modified version of MCNP in only the unique coarse meshes in the core. Reference solutions are calculated by MCNP5 with a two-group energy library generated with the HELIOS lattice code. In the 2-D problem, the angular current on the coarse mesh interfaces in COMET is expanded to 2. order in both spatial and angular variables. The COMET eigenvalue error is 0.09%. The corresponding average error in the fission density over all 3515 fuel pins is 0.5%. The maximum error observed is 2.0%. For the 3-D case, with 4. order expansion in space and azimuthal angle and 2. order expansion in the cosine of the polar angle, the eigenvalue differs from the reference solution by 0.05%. The average fission density error over the 42180 fuel pins is 0.7% with a maximum error of 3.3%. (authors)

Forget, B.; Rahnema, F. [Nuclear and Radiological Engineering / Medical Physics Programs, George W. Woodruff School, Georgia Inst. of Technology, Atlanta, GA 30332-0405 (United States)

2006-07-01T23:59:59.000Z

367

Design Methodology for Development of Behavioral Synthesis Generic and Synthetic Benchmarks  

E-Print Network (OSTI)

The importance of benchmarking as an essential methodology in evaluating and comparing digital systems synthesis tools is well established. Equally well are the limitations of the majority of current benchmarks recognized. Our primary goal is to lay out the theoretically and statistically sound foundations for addressing the key issues related to the selection of generic benchmarks and the synthesis and analysis of statistical synthetic benchmarks. The methodology for the synthetic benchmark generation uses as an intermediate step the methodology for the generic benchmark selection. The benefits of our methodology for the generic benchmark selection are: (1) it provides the sound statistical foundations for the generic benchmark selection, (2) it establishes the fact that the development of a generic benchmark is a well-defined optimization problem. The advantages of the statistical synthetic benchmarks over the generic benchmarks include: (1) having an unlimited supply of synthetic design examples, (2) obtaining the real-life like design examples which suit a particular design or analysis need, (3) having a test set which better fits all available real-life design examples. Due to the fact that the synthetic benchmark generation is based on the generic benchmark selection, the entire process of the generic and synthetic benchmark development is in sequence. It consists of the following five-stages: (1) collecting and analyzing real life design examples, (2) extracting and selecting the relevant properties that are used to specify designs, (3) deriving a generic benchmark set from the real life design examples, (4) developing the synthetic benchmark generator, and (5) constructing a synthetic benchmark set for the current applications or the future applications based ...

Hm Ar Ks

1996-01-01T23:59:59.000Z

368

Supersymmetric discovery potential and benchmarks for early runs at {radical}(s)=7 TeV at the LHC  

Science Conference Proceedings (OSTI)

We carry out an analysis of the potential of the Large Hadron Collider (LHC) to discover supersymmetry in runs at {radical}(s)=7 TeV with an accumulated luminosity of (0.1-2) fb{sup -1} of data. The analysis is done with both minimal supergravity and supergravity models with nonuniversal soft breaking. Benchmarks for early discovery with (0.1-2) fb{sup -1} of data are given. We provide an update of b-tagging efficiencies in PGS 4 appropriate for LHC analyses. A large number of signature channels are analyzed, and it is shown that each of the models exhibited are discoverable at the 5{sigma} level or more above the standard model background in several signature channels which would provide cross checks for a discovery of supersymmetry. It is shown that some of the benchmarks are discoverable with 0.1 fb{sup -1} of data again with detectable signals in several channels.

Altunkaynak, Baris; Holmes, Michael; Nath, Pran; Nelson, Brent D.; Peim, Gregory [Department of Physics, Northeastern University, Boston, Massachusetts 02115 (United States)

2010-12-01T23:59:59.000Z

369

How Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data Center Infrastructure Systems  

E-Print Network (OSTI)

Up? Energy Efficiency Metrics and Benchmarks for Data CenterUp? Energy Efficiency Metrics and Benchmarks for Data CenterHigh Med/High Figure 4. Benchmarks for Return Temperature

Mathew, Paul

2009-01-01T23:59:59.000Z

370

Development of Industrial Benchmark FEA Model to Study Energy ...  

Science Conference Proceedings (OSTI)

A study has been undertaken using thermo-electrical-mechanical finite element analysis of the cast iron to carbon contact for an anode assembly. The contact ...

371

Benchmark the Fuel Cost of Steam Generation  

DOE Green Energy (OSTI)

BestPractices Steam tip sheet regarding ways to assess steam system efficiency. To determine the effective cost of steam, use a combined heat and power simulation model that includes all the significant effects.

Papar, R. [U.S. Department of Energy (US)

2000-12-04T23:59:59.000Z

372

Knowledge Benchmarks in Adversarial Mechanism Design and Implementation in Surviving Strategies (Part I)  

E-Print Network (OSTI)

We put forward new benchmarks and solution concepts for Adversarial Mechanism Design, as defined by [MV07.a], and we exemplify them in the case of truly combinatorial auctions.We benchmark the combined performance (the sum ...

Chen, Jing

373

Knowledge Benchmarks in Adversarial Mechanism Design (Part I) and Implementation in Surviving Strategies (Part I)  

E-Print Network (OSTI)

We put forward new benchmarks and solution concepts for Adversarial Mechanism Design, as defined by [MV07.a], and we exemplify them in the case of truly combinatorial auctions.We benchmark the combined performance (the sum ...

Chen, Jing

374

Longwave 3D Benchmarks for Inhomogeneous Clouds and Comparisons with Approximate Methods  

Science Conference Proceedings (OSTI)

The purpose of this study is twofold: to (i) establish three-dimensional (3D) longwave radiative transfer benchmarks for inhomogeneous cloud fields and (ii) compare the results with three approximate, 1D methods. The benchmark results are ...

George P. Kablick III; Robert G. Ellingson; Ezra E. Takara; Jlujing Gu

2011-04-01T23:59:59.000Z

375

A mixed transaction processing and operational reporting benchmark  

Science Conference Proceedings (OSTI)

The importance of reporting is ever increasing in today's fast-paced market environments and the availability of up-to-date information for reporting has become indispensable. Current reporting systems are separated from the online transaction processing ... Keywords: Benchmarking, Mixed workload, OLTP, Operational reporting

Anja Bog; Hasso Plattner; Alexander Zeier

2011-07-01T23:59:59.000Z

376

Complex version of high performance computing LINPACK benchmark (HPL)  

Science Conference Proceedings (OSTI)

This paper describes our effort to enhance the performance of the AORSA fusion energy simulation program through the use of high-performance LINPACK (HPL) benchmark, commonly used in ranking the top 500 supercomputers. The algorithm used by HPL, enhanced ... Keywords: HPL, parallel dense solver

R. F. Barrett; T. H. F. Chan; E. F. D'Azevedo; E. F. Jaeger; K. Wong; R. Y. Wong

2010-04-01T23:59:59.000Z

377

Steam Generator Automated Eddy Current Data Analysis: A Benchmarking Study  

Science Conference Proceedings (OSTI)

This benchmarking study informs utility nondestructive evaluation (NDE) engineers of the status of automating analysis of data from steam generator tube eddy current testing. Study results will contribute to a detailed plan for continuing development of automated data analysis system processes. One day, automated data analysis will provide utilities with a consistent, accurate, and cost-effective method of analyzing eddy current inspection data.

1998-12-16T23:59:59.000Z

378

Technology Management Benchmark Study - Phase 2: Volume 2 - Detailed Report  

Science Conference Proceedings (OSTI)

EPRI and eleven U.S. domestic power companies participated in a benchmark study of the most successful technology management practices of leading non-utility companies. This report contains the detailed findings of the Technology Management Best Practices Study -- Phase 2 conducted from July 2001 to May 2002.

2002-06-27T23:59:59.000Z

379

POTENTIAL BENCHMARKS FOR ACTINIDE PRODUCTION IN HANFORD REACTORS  

Science Conference Proceedings (OSTI)

A significant experimental program was conducted in the early Hanford reactors to understand the reactor production of actinides. These experiments were conducted with sufficient rigor, in some cases, to provide useful information that can be utilized today in development of benchmark experiments that may be used for the validation of present computer codes for the production of these actinides in low enriched uranium fuel.

PUIGH RJ; TOFFER H

2011-10-19T23:59:59.000Z

380

Building America Research Benchmark Definition: Updated December 19, 2008  

SciTech Connect

To track progress toward aggressive multi-year whole-house energy savings goals of 40-70% and onsite power production of up to 30%, DOE's Residential Buildings Program and NREL developed the Building America Research Benchmark in consultation with the Building America industry teams.

Hendron, R.

2008-12-01T23:59:59.000Z

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


381

Roberts: Reconfigurable Platform for Benchmarking Real-time Systems  

E-Print Network (OSTI)

Department of Electrical and Electronic Engineering Imperial College London, UK p-time properties and energy consumption. The benchmarking takes into account system workload and environmental-test, and with support for on-line monitoring of the response time, output values and energy consumption. The proposed

Luk, Wayne

382

Terry Sharp, P.E. Building Performance Benchmarking  

E-Print Network (OSTI)

Terry Sharp, P.E. Building Performance Benchmarking 3rd U.S. Army Energy Workshop January 25-26, 2007 EPA Energy Star Program and Energy Data Normalization Oak Ridge National Laboratory #12;Why You Should Care · Energy Star tools enable you to take Strategic Energy Management to a new level · Energy

Oak Ridge National Laboratory

383

Benchmarking telecoms regulation - The Telecommunications Regulatory Governance Index (TRGI)  

Science Conference Proceedings (OSTI)

In this study an index of the effectiveness of the institutional design of telecommunication regulators for 142 countries that belong to the International Telecommunications Union is produced. This index - the Telecommunications Regulatory Governance ... Keywords: Benchmarking, Country-wide governance, Telecoms regulation

Leonard Waverman; Pantelis Koutroumpis

2011-06-01T23:59:59.000Z

384

Air Ingress Benchmarking with Computational Fluid Dynamics Analysis  

E-Print Network (OSTI)

Temperature Reactor Technology Institute of Nuclear and New Energy Technology Friendship Hotel, Haidian by a CFD benchmarking program based on experimental work performed by JAERI (Japanese Atomic Energy Energy Research Institute) had been set up to study the ingress of air into the core as a result

385

Propane Watch, historical - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Historical. Propane stocks and prices available weekly during October through March and monthly during the rest of the year.

386

The GreenIT DC-benchmarking tool: from scientific theory to real life  

Science Conference Proceedings (OSTI)

Energy efficiency is one of the topics in achieving the goal of reducing the CO2 output in the next years. Data centers (DC) are big polluters. GreenIT DC-Benchmarking is the first neutral benchmarking tool that shows the specific energy and ... Keywords: data center benchmarking, energy consumption, energy efficiency & monitoring, key performance indicator, power usage effectiveness (PUE)

Ywes Israel; Thomas Leitert

2012-05-01T23:59:59.000Z

387

Benchmarking DAML+OIL Repositories Yuanbo Guo, Jeff Heflin, and Zhengxiang Pan  

E-Print Network (OSTI)

Benchmarking DAML+OIL Repositories Yuanbo Guo, Jeff Heflin, and Zhengxiang Pan Department, heflin, zhp2}@cse.lehigh.edu Abstract. We present a benchmark that facilitates the evaluation of DAML+OIL repositories in a standard and systematic way. This benchmark is intended to evaluate the performance of DAML+OIL

Heflin, Jeff

388

Windows and Linux Robustness Benchmarks With Respect to Application Erroneous Behavior  

E-Print Network (OSTI)

Windows and Linux Robustness Benchmarks With Respect to Application Erroneous Behavior Karama of benchmark results obtained for various versions of Windows and Linux operating systems. The benchmark, Karama Kanoun et Lisa Spainhower (Ed.) (2008) 227-254" #12;Kanoun et al. Windows and Linux Robustness

389

SPR - Historical Oil Sales and Exchanges | Department of Energy  

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

- Historical Oil Sales and Exchanges SPR - Historical Oil Sales and Exchanges SPR - Historical Oil Sales and Exchanges More Documents & Publications Before the Senate Energy and...

390

Department of Energy Commercial Building Benchmarks (New Construction): Summary of Changes from v1.1_3.1 to v1.2_4.0, October 30, 2009  

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

Benchmarks Benchmarks New Construction Summary of Changes from v1.1_3.1 to v1.2_4.0 October 30, 2009 Applicable Model(s) Applicable Model Abbreviated Name(s) Change All models (all) Run with EnergyPlus v4.0 instead of 3.1. All models (all) Updated header text to reflect changes. All models (all) Exterior lighting changed from 5.0 W/ft to 0.2 W/ft 2 . All models (all) Added 30 W/ft of exterior lighting for primary entrance doors and 20W/ft for other doors. All Models (all) Infiltration input as flow per exterior wall area, except for attics which have 1.0 ACH infiltration. All Models (all) Many internal gains input as watts/area instead of just total watts, in order to identify

391

Benchmarking a new closed-form thermal analysis technique against a traditional lumped parameter, finite-difference method  

Science Conference Proceedings (OSTI)

A benchmarking effort was conducted to determine the accuracy of a new analytic generic geology thermal repository model developed at LLNL relative to a more traditional, numerical, lumped parameter technique. The fast-running analytical thermal transport model assumes uniform thermal properties throughout a homogenous storage medium. Arrays of time-dependent heat sources are included geometrically as arrays of line segments and points. The solver uses a source-based linear superposition of closed form analytical functions from each contributing point or line to arrive at an estimate of the thermal evolution of a generic geologic repository. Temperature rise throughout the storage medium is computed as a linear superposition of temperature rises. It is modeled using the MathCAD mathematical engine and is parameterized to allow myriad gridded repository geometries and geologic characteristics [4]. It was anticipated that the accuracy and utility of the temperature field calculated with the LLNL analytical model would provide an accurate 'birds-eye' view in regions that are many tunnel radii away from actual storage units; i.e., at distances where tunnels and individual storage units could realistically be approximated as physical lines or points. However, geometrically explicit storage units, waste packages, tunnel walls and close-in rock are not included in the MathCAD model. The present benchmarking effort therefore focuses on the ability of the analytical model to accurately represent the close-in temperature field. Specifically, close-in temperatures computed with the LLNL MathCAD model were benchmarked against temperatures computed using geometrically-explicit lumped-parameter, repository thermal modeling technique developed over several years at ANL using the SINDAG thermal modeling code [5]. Application of this numerical modeling technique to underground storage of heat generating nuclear waste streams within the proposed YMR Site has been widely reported [6]. New SINDAG thermal models presented here share this same basic modeling approach.

Huff, K. D.; Bauer, T. H. (Nuclear Engineering Division)

2012-08-20T23:59:59.000Z

392

Historic Building Renovations | Department of Energy  

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

Historic Building Renovations Historic Building Renovations Historic Building Renovations October 16, 2013 - 4:52pm Addthis Renewable Energy Options for Historical Building Renovations Photovoltaics (PV) Solar Water Heating Geothermal Heat Pumps Biomass Heating When a Federal agency undertakes a renovation to an historic building, the renovation team must consider not only the uses and needs of the facility, but also a range of issues related to historic preservation. Integrating renewable energy such as solar and wind into an historic renovation has been accomplished successfully by agencies; the design and placement of any renewable energy system must be closely integrated with the overall design plans. Any renewable energy additions must maintain the integrity and defining characteristics of the building.

393

Historical Natural Gas Annual - 1930 Through 2000  

Gasoline and Diesel Fuel Update (EIA)

Historical Natural Gas Annual Historical Natural Gas Annual 1930 Through 2000 EIA Home > Natural Gas > Natural Gas Data Publications Historical Natural Gas Annual The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at selected points in the flow of gas from the wellhead to the burner-tip. Data include production, transmission within the United States, imports and exports of natural gas, underground storage activities, and deliveries to consumers. The publication presents historical data at the national level for 1930-2000 and detailed annual historical information by State for 1967-2000. To read reports in PDF format download a free copy of Adobe Acrobat Reader.

394

Benchmarking derivative-free optimization algorithms.  

SciTech Connect

We propose data profiles as a tool for analyzing the performance of derivative-free optimization solvers when there are constraints on the computational budget. We use performance and data profiles, together with a convergence test that measures the decrease in function value, to analyze the performance of three solvers on sets of smooth, noisy, and piecewise-smooth problems. Our results provide estimates for the performance difference between these solvers, and show that on these problems, the model-based solver tested performs better than the two direct search solvers tested.

More' , J. J.; Wild, S. M.; Mathematics and Computer Science; Cornell Univ.

2009-01-01T23:59:59.000Z

395

Finalize Historic National Program to Reduce Greenhouse Gases and Improve  

Open Energy Info (EERE)

Finalize Historic National Program to Reduce Greenhouse Gases and Improve Finalize Historic National Program to Reduce Greenhouse Gases and Improve Fuel Economy for Cars and Trucks Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Finalize Historic National Program to Reduce Greenhouse Gases and Improve Fuel Economy for Cars and Trucks Agency/Company /Organization: EPA and NHTSA Focus Area: Standards - Incentives - Policies - Regulations Topics: Policy Impacts Resource Type: Reports, Journal Articles, & Tools Website: www.epa.gov/oms/climate/regulations/420f10014.pdf This document establish a national program consisting of new standards for model year 2012 through 2016 light-duty vehicles that will reduce greenhouse gas emissions and improve fuel economy. EPA is finalizing the first-ever national greenhouse gas (GHG) emissions standards under the

396

RECENT ADDITIONS OF CRITICALITY SAFETY RELATED INTEGRAL BENCHMARK DATA TO THE ICSBEP AND IRPHEP HANDBOOKS  

SciTech Connect

High-quality integral benchmark experiments have always been a priority for criticality safety. However, interest in integral benchmark data is increasing as efforts to quantify and reduce calculational uncertainties accelerate to meet the demands of future criticality safety needs to support next generation reactor and advanced fuel cycle concepts. The importance of drawing upon existing benchmark data is becoming more apparent because of dwindling availability of critical facilities worldwide and the high cost of performing new experiments. Integral benchmark data from the International Handbook of Evaluated Criticality Safety Benchmark Experiments and the International Handbook of Reactor Physics Benchmark Experiments are widely used. Benchmark data have been added to these two handbooks since the last Nuclear Criticality Safety Division Topical Meeting in Knoxville, Tennessee (September 2005). This paper highlights these additions.

J. Blair Briggs; Lori Scott; Yolanda Rugama; Enrico Sartori

2009-09-01T23:59:59.000Z

397

Energy Tips: Benchmark the Fuel Cost of Steam Generation  

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

Type (sales unit) Type (sales unit) Energy Content Combustion (Btu/sales unit) Efficiency (%) Natural Gas (therm) 100,000 81.7 Natural Gas (cubic foot) 1,030 81.7 Distillate/No. 2 Oil (gallon) 138,700 84.6 Residual/No. 6 Oil (gallon) 149,700 86.1 Coal (ton) 27,000,000 87.6 Benchmark the Fuel Cost of Steam Generation Benchmarking the fuel cost of steam generation ($/1000 lbs of steam) is an effective way to assess the efficiency of your steam system. This cost is dependent upon fuel type, unit fuel cost, boiler efficiency, feedwater temperature, and steam pressure. This calculation provides a good first approximation for the cost of generating steam and serves as a tracking device to allow for boiler performance monitoring. Table 1 shows the heat input required to produce one pound of saturated

398

Benchmarking and Performance Based Rating System for Commercial Buildings  

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

Benchmarking and Performance Based Rating System for Commercial Buildings Benchmarking and Performance Based Rating System for Commercial Buildings in India Speaker(s): Saket Sarraf Date: May 4, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Girish Ghatikar The Indian building sector has witnessed huge surge in interest in energy performance in the last decade. The 'intention' based codes like the national Energy Conservation Building Code (ECBC) and green building rating systems such as Leadership in Energy and Environment Design (LEED-India) and Green Rating for Integrated Habitat Assessment (GRIHA) have been the prime mechanisms to design and assess energy efficient buildings. However, they do not rate the 'achieved' energy performance of buildings over time or reward their performance through a continuous evaluation process.

399

Snowmass Benchmark Points and Three-Loop Running  

E-Print Network (OSTI)

We present the full three-loop beta-functions for the MSSM generalised to include additional matter multiplets in 5, 10 representations of SU(5). We analyse in detail the effect of three-loop running on the sparticle spectrum for the MSSM Snowmass Benchmark Points. We also consider the effect on these spectra of additional matter multiplets (the semi-perturbative unification scenario).

I. Jack; D. R. T. Jones; A. F. Kord

2004-08-10T23:59:59.000Z

400

Randomized benchmarking of atomic qubits in an optical lattice  

E-Print Network (OSTI)

We perform randomized benchmarking on neutral atomic quantum bits (qubits) confined in an optical lattice. Single qubit gates are implemented using microwaves, resulting in a measured error per randomized computational gate of 1.4(1) x 10^-4 that is dominated by the system T2 relaxation time. The results demonstrate the robustness of the system, and its viability for more advanced quantum information protocols.

S. Olmschenk; R. Chicireanu; K. D. Nelson; J. V. Porto

2010-08-16T23:59:59.000Z

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


401

Optimal design and quantum benchmarks for coherent state amplifiers  

E-Print Network (OSTI)

We establish the ultimate quantum limits to the amplification of an unknown coherent state, both in the deterministic and probabilistic case, investigating the realistic scenario where the expected photon number is finite. In addition, we provide the benchmark that experimental realizations have to surpass in order to beat all classical amplification strategies and to demonstrate genuine quantum amplification. Our result guarantees that a successful demonstration is in principle possible for every finite value of the expected photon number.

Giulio Chiribella; Jinyu Xie

2013-01-07T23:59:59.000Z

402

Providing Nuclear Criticality Safety Analysis Education through Benchmark Experiment Evaluation  

SciTech Connect

One of the challenges that today's new workforce of nuclear criticality safety engineers face is the opportunity to provide assessment of nuclear systems and establish safety guidelines without having received significant experience or hands-on training prior to graduation. Participation in the International Criticality Safety Benchmark Evaluation Project (ICSBEP) and/or the International Reactor Physics Experiment Evaluation Project (IRPhEP) provides students and young professionals the opportunity to gain experience and enhance critical engineering skills.

John D. Bess; J. Blair Briggs; David W. Nigg

2009-11-01T23:59:59.000Z

403

Providing Nuclear Criticality Safety Analysis Education through Benchmark Experiment Evaluation  

SciTech Connect

One of the challenges that today's new workforce of nuclear criticality safety engineers face is the opportunity to provide assessment of nuclear systems and establish safety guidelines without having received significant experience or hands-on training prior to graduation. Participation in the International Criticality Safety Benchmark Evaluation Project (ICSBEP) and/or the International Reactor Physics Experiment Evaluation Project (IRPhEP) provides students and young professionals the opportunity to gain experience and enhance critical engineering skills.

John D. Bess; J. Blair Briggs; David W. Nigg

2009-11-01T23:59:59.000Z

404

Clean Critical Experiment Benchmarks for Plutonium Recycle in LWRs  

Science Conference Proceedings (OSTI)

Government laboratories and private industry in the U.S. and in other countries have carried out or initiated programs to study and evaluate the technical and economic feasibility of recycling plutonium. The experimental measurements program provides benchmark neutronics data for use in assessing the accuracy of neutronics analysis methods for slightly enriched uranium lattices and for mixed oxide lattices. The lattice pitches were selected to provide configurations that were undermoderated, near optimum...

1978-09-01T23:59:59.000Z

405

The benchmark of gutzwiller density functional theory in hydrogen systems  

SciTech Connect

We propose an approximate form of the exchange-correlation energy functional for the Gutzwiller density functional theory. It satisfies certain physical constraints in both weak and strong electron correlation limits. We benchmark the Gutzwiller density functional approximation in the hydrogen systems, where the static correlation error is shown to be negligible. The good transferability is demonstrated by applications to the hydrogen molecule and some crystal structures.

Yao, Y.; Wang, Cai-Zhuang; Ho, Kai-Ming

2012-02-23T23:59:59.000Z

406

Benchmarking and Self-Assessment in the Wine Industry  

SciTech Connect

Not all industrial facilities have the staff or theopportunity to perform a detailed audit of their operations. The lack ofknowledge of energy efficiency opportunities provides an importantbarrier to improving efficiency. Benchmarking programs in the U.S. andabroad have shown to improve knowledge of the energy performance ofindustrial facilities and buildings and to fuel energy managementpractices. Benchmarking provides a fair way to compare the energyintensity of plants, while accounting for structural differences (e.g.,the mix of products produced, climate conditions) between differentfacilities. In California, the winemaking industry is not only one of theeconomic pillars of the economy; it is also a large energy consumer, witha considerable potential for energy-efficiency improvement. LawrenceBerkeley National Laboratory and Fetzer Vineyards developed the firstbenchmarking tool for the California wine industry called "BEST(Benchmarking and Energy and water Savings Tool) Winery". BEST Wineryenables a winery to compare its energy efficiency to a best practicereference winery. Besides overall performance, the tool enables the userto evaluate the impact of implementing efficiency measures. The toolfacilitates strategic planning of efficiency measures, based on theestimated impact of the measures, their costs and savings. The tool willraise awareness of current energy intensities and offer an efficient wayto evaluate the impact of future efficiency measures.

Galitsky, Christina; Radspieler, Anthony; Worrell, Ernst; Healy,Patrick; Zechiel, Susanne

2005-12-01T23:59:59.000Z

407

Benchmark validation comparisons of measured and calculated delayed neutron detector responses for a pulsed photonuclear assessment technique  

SciTech Connect

An MCNPX-based calculational methodology has been developed to numerically simulate the complex electron–photon–neutron transport problem for the active interrogation system known as the pulsed photonuclear assessment (PPA) technique. The PPA technique uses a pulsed electron accelerator to generate bremsstrahlung photons in order to fission nuclear materials. Delayed neutron radiation is then detected with helium-3 neutron detectors as evidence of the nuclear material presence. Two experimental tests were designed, setup and run to generate experimental data for benchmarking purposes. The first test irradiated depleted uranium in air, and the second test, depleted uranium in a simulated cargo container (plywood pallet), using 10 MeV electron pulses. Time-integrated, post-flash, delayed neutron counts were measured and compared to calculated count predictions in order to benchmark the calculational methodology and computer models. Comparisons between the experimental measurements and numerical predictions of the delayed neutron detector responses resulted in reasonable experiment/calculated ratios of 1.42 and 1.06 for the two tests. High-enriched uranium (HEU) predictions were also made with the benchmarked models.

J. W. Sterbentz; J. L. Jones; W. Y. Yoon; D. R. Norman; K. J. Haskell

2007-08-01T23:59:59.000Z

408

Verification and benchmarking of MAGNUM-2D: a finite element computer code for flow and heat transfer in fractured porous media  

SciTech Connect

The objective of this work is to assess prediction capabilities and features of the MAGNUM-2D computer code in relation to its intended use in the Basalt Waste Isolation Project (BWIP). This objective is accomplished through a code verification and benchmarking task. Results are documented which support correctness of prediction capabilities in areas of intended model application. 10 references, 43 figures, 11 tables.

Eyler, L.L.; Budden, M.J.

1985-03-01T23:59:59.000Z

409

National Historic Preservation Act | Open Energy Information  

Open Energy Info (EERE)

Act Act Jump to: navigation, search Statute Name National Historic Preservation Act Year 1966 Url [[File:|160px|link=http://www.achp.gov/docs/nhpa%202008-final.pdf]] Description 16 USC 470a et seq (2006) and implementing regulations at 36 CFR 800 (2008) References Advisory Council on Historic Preservation[1] (pdf) National Historic Preservation Act[2] 16 USC 470a et seq (2006) and implementing regulations at 36 CFR 800 (2008) The goal of the National Historic Preservation Act (NHPA), which established the Advisory Council on Historic Preservation (ACHP) in 1966, is to have federal agencies act as responsible stewards of our nation's resources when their actions affect historic properties. The ACHP is the only entity with the legal responsibility to encourage federal agencies to

410

Benchmarking and Equipment and Controls Assessment for a 'Big Box' Retail Chain  

Science Conference Proceedings (OSTI)

The paper describes work to enable improved energy performance of existing and new retail stores belonging to a national chain and thereby also identify measures and tools that would improve the performance of 'big box' stores generally. A detailed energy simulation model of a standard store design was developed and used to: (1) demonstrate the benefits of benchmarking the energy performance of retail stores of relatively standard design using baselines derived from simulation, (2) identify cost-effective improvements in the efficiency of components to be incorporated in the next design cycle, and (3) use simulation to identify potential control strategy improvements that could be adopted in all stores, improving operational efficiency. The core enabling task of the project was to develop an energy model of the current standard design using the EnergyPlus simulation program. For the purpose of verification of the model against actual utility bills, the model was reconfigured to represent twelve existing stores (seven relatively new stores and five older stores) in different US climates and simulations were performed using weather data obtained from the National Weather Service. The results of this exercise, which showed generally good agreement between predicted and measured total energy use, suggest that dynamic benchmarking based on energy simulation would be an effective tool for identifying operational problems that affect whole building energy use. The models of the seven newer stores were then configured with manufacturers performance data for the equipment specified in the current design and used to assess the energy and cost benefits of increasing the efficiency of selected HVAC, lighting and envelope components. The greatest potential for cost-effective energy savings appears to be a substantial increase in the efficiency of the blowers in the roof top units and improvements in the efficiency of the lighting. The energy benefits of economizers on the roof-top units were analyzed and found to be very sensitive to the operation of the exhaust fans used to control building pressurization.

Haves, Philip; Coffey, Brian; Williams, Scott

2008-06-11T23:59:59.000Z

411

Gasoline Prices at Historical Lows  

Gasoline and Diesel Fuel Update (EIA)

0 0 Notes: Before looking at El Paso gasoline prices, letÂ’s take a minute to look at the U.S. average price for context. Gasoline prices this year, adjusted for inflation, are the lowest ever. Back in March, before prices began to rise ahead of the traditional high-demand season, the U.S. average retail price fell to $1.00 per gallon. Prices rose an average of 7.5 cents, less than the typical seasonal runup, to peak in early June. Since then, prices have fallen back to $1.013. Given recent declines in crude oil and wholesale gasoline prices, we expect retail prices to continue to ease over at least the next few weeks. Since their sharp runup during the energy crises of the 1970Â’s, gasoline prices have actually been non-inflationary. Adjusting the historical prices by the Consumer Price Index, we can see that todayÂ’s

412

TRACE/PARCS analysis of the OECD/NEA Oskarshamn-2 BWR stability benchmark  

Science Conference Proceedings (OSTI)

On February 25, 1999, the Oskarshamn-2 NPP experienced a stability event which culminated in diverging power oscillations with a decay ratio of about 1.4. The event was successfully modeled by the TRACE/PARCS coupled code system, and further analysis of the event is described in this paper. The results show very good agreement with the plant data, capturing the entire behavior of the transient including the onset of instability, growth of the oscillations (decay ratio) and oscillation frequency. This provides confidence in the prediction of other parameters which are not available from the plant records. The event provides coupled code validation for a challenging BWR stability event, which involves the accurate simulation of neutron kinetics (NK), thermal-hydraulics (TH), and TH/NK. coupling. The success of this work has demonstrated the ability of the 3-D coupled systems code TRACE/PARCS to capture the complex behavior of BWR stability events. The problem was released as an international OECD/NEA benchmark, and it is the first benchmark based on measured plant data for a stability event with a DR greater than one. Interested participants are invited to contact authors for more information. (authors)

Kozlowski, T. [Univ. of Illinois, Urbana-Champaign, IL (United States); Downar, T.; Xu, Y.; Wysocki, A. [Univ. of Michigan, Ann Arbor, MI (United States); Ivanov, K.; Magedanz, J.; Hardgrove, M. [Pennsylvania State Univ., Univ. Park, PA (United States); March-Leuba, J. [Oak Ridge National Laboratory, Oak Ridge, TN (United States); Hudson, N.; Woodyatt, D. [Nuclear Regulatory Commission, Rockville, MD (United States)

2012-07-01T23:59:59.000Z

413

Historically Underrepresented Communities | Department of Energy  

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

Historically Underrepresented Communities Historically Underrepresented Communities Historically Underrepresented Communities The Department recognizes that embracing diversity in all aspects of our operations is crucial to achieving our mission. Diversity is more than simply numbers and statistics, it is a cross-cutting imperative of our people, programs, partners, and innovation at the Department. Everyone deserves equal participation and access to the energy programs of the Department, and, with the support of Secretary Moniz and President Obama, the Department's Office of Diversity and Inclusion seeks to ensure that underrepresented communities are always at the table. To this end, we seek to help historically underrepresented communities learn how to work with the Department, rectify environmental injustices,

414

A Historic Commitment to Research and Education  

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

A Historic Commitment to Research and Education WASHINGTON, DC - In a speech to the National Academy of Sciences, President Obama outlined a bold commitment to basic and applied...

415

Historical Procurement Information | Department of Energy  

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

Note - historical means what the Department has bought in the past. Our procurement Forecast shows what we will buy in the future. Construction Forestry Goods Manufacturing...

416

Benchmark Measurements of the Ionization Balance of Non-LTE Gold  

SciTech Connect

The authors present a series of benchmark measurements of the ionization balance of well characterized gold plasmas with and without external radiation fields at electron densities near 10{sup 21} cm{sup -3} and various electron temperatures spanning the range 0.8 to 2.4 keV. They have analyzed time- and space-resolved M-shell gold emission spectra using a sophisticated collisional-radiative model with hybrid level structure, finding average ion changes ranging from 42 to 50. At the lower temperatures, the spectra exhibit significant sensitivity to external radiation fields and include emission features from complex N-shell ions not previously studied at these densities. The measured spectra and inferred provide a stringent test for non-local thermodynamic equilibrium (non-LTE) models of complex high-Z ions.

Heeter, R F; Hansen, S B; Fournier, K B; Foord, M E; Froula, D H; Mackinnon, A J; May, M J; Schneider, M B; Young, B F

2007-04-20T23:59:59.000Z

417

Historical seismometry database project: A comprehensive relational database for historical seismic records  

Science Conference Proceedings (OSTI)

The recovery and preservation of the patrimony made of the instrumental registrations regarding the historical earthquakes is with no doubt a subject of great interest. This attention, besides being purely historical, must necessarily be also scientific. ... Keywords: Historical seismometry, MySQL, Oracle, Relational database project

Andrea Bono

2007-01-01T23:59:59.000Z

418

LMS-based method for damage detection applied to Phase II of Structural Health Monitoring benchmark problem  

E-Print Network (OSTI)

Structural Health Monitoring (SHM) is the process of monitoring the state of a structure to determine the existence, location, and degree of damage that may exist within the entire structure. A structureÂ?s health or level of damage can be monitored by identifying changes in structural or modal parameters. In this research, the structureÂ?s health is monitored by identifying changes in structural stiffness. The Adaptive Least Mean Square (LMS) filtering approach is used to directly identify changes in structural stiffness for the IASC-ASCE Structural Health Monitoring Task Group Benchmark problem for both Phase I and II. The research focuses primarily on Phase II of the benchmark problem. In Phase II, modeling error and noise is introduced to the problem making the problem more realistic. The research found that the LMS filter approach can be used to detect damage and distinguish relative severity of the damage in Phase II of the benchmark problem in real time. Even though the LMS filter approach identified damage, a threshold below which damage is hard to identify exists. If the overall stiffness changes less than 10%, then identifying the presence and location of damage is difficult. But if the time of damage is known, then the presence and location can be determined. The research is of great interest to those in the structural health monitoring community, structural engineers, and inspection practitioners who deal with structural damage identification problems.

Preston, Robin Huckaby

2005-05-01T23:59:59.000Z

419

Long-term behavior of the Atlantic Interhemispheric SST Gradient in the CMIP5 Historical Simulations  

Science Conference Proceedings (OSTI)

Multidecadal and longer changes to the Atlantic Interhemispheric sea surface temperature gradient (AITG) in the Coupled Model Intercomparison Project phase 5 (CMIP5) historical simulations are investigated. Observations show a secular trend to ...

John C. H. Chiang; C.-Y. Chang; M. F. Wehner

420

Natural Gas Annual, 1999 (HISTORICAL)  

Gasoline and Diesel Fuel Update (EIA)

9 9 The Natural Gas Annual, 1999 provides information on the supply and disposition of natural gas in the United States. Production, transmission, storage, deliveries, and price data are published by State for 1999. Summary data are presented for each Census Division and State for 1995 to 1999. A section of historical data at the National level shows industry activities back to the 1930's. The data that appear in the tables of the Natural Gas Annual, 1999 are available as self-extracting executable files in ASCII TXT or CSV file formats. This volume emphasizes information for 1999, although some tables show a five-year history. Please read the file entitled README.V1 for a description and documentation of information included in this file. Also available are files containing the following data: Summary Statistics - Natural Gas in the United States, 1995-1999 (Table 1) ASCII TXT, and Natural Gas Supply and Disposition by State, 1999 (Table 2) ASCII TXT, are also available.

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


421

Historical Natural Gas Annual - 1930 Through 2000  

Gasoline and Diesel Fuel Update (EIA)

2000 2000 The Historical Natural Gas Annual contains historical information on supply and disposition of natural gas at the national, regional, and State level as well as prices at selected points in the flow of gas from the wellhead to the burner-tip. Data include production, transmission within the United States, imports and exports of natural gas, underground storage activities, and deliveries to consumers. The publication presents historical data at the national level for 1930-2000 and detailed annual historical information by State for 1967-2000. Entire . The entire report as a single file. PDF 1.5 MB Front Matter . Historical Natural Gas Annual Cover Page, Preface, Common Abbreviations Used, and Table of Contents PDF . . Tables . 1 Quantity and Average Price of Natural Gas Production in the United States, 1930-1998 PDF

422

Cultural (Historical) Resource Management, Environmental Protection  

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

History Homepage History Homepage Accelerators & Detectors Cosmotron AGS Strong-focusing 80" Bubble Chamber The omega-minus 7' Bubble Chamber The charmed baryon NSLS RHIC Reactors Graphite Research Reactor High Flux Beam Reactor Medical Research Reactor Life Sciences Medical breakthroughs Biology research Plant Genetics Other BNL Nobel Prizes The First Video Game? BNL Physics Timeline Camp Upton Historic Images BNL Cultural (Historical) Resource Management Cultural (Historical) Resource Management at Brookhaven National Laboratory Photograph of the remains of WWI training trenches The Environmental Protection Division is responsible for ensuring compliance with historic preservation requirements. The BNL Cultural Resource Management Plan identifies and describes the management plans for of all of BNL's cultural resources. These resources include World War I trenches, Civilian Conservation Corps features, World War II buildings, and historic structures, programs and discoveries associated with high energy physics, research reactors, and other science conducted at the Laboratory.

423

Quantum Benchmark for Teleportation and Storage of Squeezed States  

E-Print Network (OSTI)

We provide a quantum benchmark for teleportation and storage of single-mode squeezed states with zero displacement and a completely unknown degree of squeezing along a given direction. For pure squeezed input states, a fidelity higher than 81.5% has to be attained in order to outperform any classical strategy based on an estimation of the unknown squeezing and repreparation of squeezed states. For squeezed thermal input states, we derive an upper and a lower bound on the classical average fidelity which tighten for moderate degree of mixedness. These results enable a critical discussion of recent experiments with squeezed light.

Gerardo Adesso; Giulio Chiribella

2007-11-22T23:59:59.000Z

424

Quantum benchmark for storage and transmission of coherent states  

E-Print Network (OSTI)

We consider the storage and transmission of a Gaussian distributed set of coherent states of continuous variable systems. We prove a limit on the average fidelity achievable when the states are transmitted or stored by a classical channel, i.e., a measure and repreparation scheme which sends or stores classical information only. The obtained bound is tight and serves as a benchmark which has to be surpassed by quantum channels in order to outperform any classical strategy. The success in experimental demonstrations of quantum memories as well as quantum teleportation has to be judged on this footing.

K. Hammerer; M. M. Wolf; E. S. Polzik; J. I. Cirac

2004-09-17T23:59:59.000Z

425

Benchmark problems in which equality plays the major role  

SciTech Connect

We have recently heard rumors that researchers are again studying paramodulation [Wos87] in the context of strategy for its control. In part to facilitate such research, and in part to provide test problems for evaluating other approaches to equality-oriented reasoning, we offer in this article a set of benchmark problems in which equality plays the dominant role. The test problems are taken from group theory, Robbins algebra, combinatory logic, and other areas. For each problem, we include appropriate clauses and comment as to its status with regard to provability by an unaided automated reasoning program.

Lusk, E.; Wos, L.

1992-05-01T23:59:59.000Z

426

Benchmark problems in which equality plays the major role  

SciTech Connect

We have recently heard rumors that researchers are again studying paramodulation (Wos87) in the context of strategy for its control. In part to facilitate such research, and in part to provide test problems for evaluating other approaches to equality-oriented reasoning, we offer in this article a set of benchmark problems in which equality plays the dominant role. The test problems are taken from group theory, Robbins algebra, combinatory logic, and other areas. For each problem, we include appropriate clauses and comment as to its status with regard to provability by an unaided automated reasoning program.

Lusk, E.; Wos, L.

1992-01-01T23:59:59.000Z

427

Benchmarking and Performance Improvement at Rocky Flats Environmental Technology Site  

Science Conference Proceedings (OSTI)

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

Elliott, C. [Kaiser-Hill Co., LLC, Golden, CO (United States)], Doyle, D. [USDOE Rocky Flats Office, Golden, CO (United States)], Featherman, W.D. [Project Performance Corp., Sterline, VA (United States)

1997-12-31T23:59:59.000Z

428

Benchmarking quantum control methods on a 12-qubit system  

E-Print Network (OSTI)

In this letter, we present an experimental benchmark of operational control methods in quantum information processors extended up to 12 qubits. We implement universal control of this large Hilbert space using two complementary approaches and discuss their accuracy and scalability. Despite decoherence, we were able to reach a 12-coherence state (or 12-qubits pseudo-pure cat state), and decode it into an 11 qubit plus one qutrit labeled observable pseudo-pure state using liquid state nuclear magnetic resonance quantum information processors.

C. Negrevergne; T. S. Mahesh; C. A. Ryan; M. Ditty; F. Cyr-Racine; W. Power; N. Boulant; T. Havel; D. G. Cory; R. Laflamme

2006-03-27T23:59:59.000Z

429

Multi-Scale Modeling of Irradiation Effects on Nuclear Fuel ...  

Science Conference Proceedings (OSTI)

Ab Initio-Based Rate Theory Modeling of Radiation Induced Segregation in ... Benchmarking of Structural Materials Pre-Selected for Advanced Nuclear Reactors.

430

Quantum benchmarks for the storage or transmission of quantum light from minimal resources  

E-Print Network (OSTI)

We investigate several recently published benchmark criteria for storage or transmission of continuous-variable quantum information. A comparison reveals that criteria based on a Gaussian distribution of coherent states are most resilient to noise. We then address the issue of experimental resources and derive an equally strong benchmark, solely based on three coherent states and homodyne detection. This benchmark is further simplified in the presence of naturally occurring random phases, which remove the need for active input-state modulation.

Hauke Häseler; Norbert Lütkenhaus

2009-10-08T23:59:59.000Z

431

Integral Benchmark Data for Nuclear Data Testing Through the ICSBEP & IRPhEP  

Science Conference Proceedings (OSTI)

The status of the International Criticality Safety Benchmark Evaluation Project (ICSBEP) and International Reactor Physics Experiment Evaluation Project (IRPhEP) was last discussed directly with the nuclear data community at ND2007. Since ND2007, integral benchmark data that are available for nuclear data testing have increased significantly. The status of the ICSBEP and the IRPhEP is discussed and selected benchmark configurations that have been added to the ICSBEP and IRPhEP Handbooks since ND2007 are highlighted.

J. Blair Briggs; John D. Bess; Jim Gulliford; Ian Hill

2013-10-01T23:59:59.000Z

432

Benchmark suites for improving the RDF(S) importers and exporters of ontology development tools  

E-Print Network (OSTI)

Abstract. Interoperability is the ability of two or more systems to interchange information and to use the information that has been interchanged. Nowadays, interoperability between ontology development tools is low. Therefore, to assess and improve this interoperability, we propose to perform a benchmarking of the interoperability of ontology development tools using RDF(S) as the interchange language. This paper presents, on the one hand, the interoperability benchmarking that is currently in progress in Knowledge Web 1 and, on the other, the benchmark suites defined and used in this benchmarking. 1

Raúl García-castro; Asunción Gómez-pérez

2006-01-01T23:59:59.000Z

433

Strategies for energy benchmarking in cleanrooms and laboratory-type facilities  

E-Print Network (OSTI)

for Environmental Research (CEDR) examined methods forbe operated efficiently. CEDR constructed a benchmark toolperformance metrics. The CEDR tool has been developed with

Sartor, Dale; Piette, Mary Ann; Tschudi, William; Fok, Stephen

2000-01-01T23:59:59.000Z

434

Guideline for benchmarking thermal treatment systems for low-level mixed waste  

SciTech Connect

A process for benchmarking low-level mixed waste (LLMW) treatment technologies has been developed. When used in conjunction with the identification and preparation of surrogate waste mixtures, and with defined quality assurance and quality control procedures, the benchmarking process will effectively streamline the selection of treatment technologies being considered by the US Department of Energy (DOE) for LLMW cleanup and management. Following the quantitative template provided in the benchmarking process will greatly increase the technical information available for the decision-making process. The additional technical information will remove a large part of the uncertainty in the selection of treatment technologies. It is anticipated that the use of the benchmarking process will minimize technology development costs and overall treatment costs. In addition, the benchmarking process will enhance development of the most promising LLMW treatment processes and aid in transferring the technology to the private sector. To instill inherent quality, the benchmarking process is based on defined criteria and a structured evaluation format, which are independent of any specific conventional treatment or emerging process technology. Five categories of benchmarking criteria have been developed for the evaluation: operation/design; personnel health and safety; economics; product quality; and environmental quality. This benchmarking document gives specific guidance on what information should be included and how it should be presented. A standard format for reporting is included in Appendix A and B of this document. Special considerations for LLMW are presented and included in each of the benchmarking categories.

Hoffman, D.P.; Gibson, L.V. Jr.; Hermes, W.H. [Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States); Bastian, R.E. [Focus Environmental, Inc., Knoxville, TN (United States); Davis, W.T. [Tennessee Univ., Knoxville, TN (United States)

1994-01-01T23:59:59.000Z

435

Assessment of Applying the PMaC Prediction Framework to NERSC-5 SSP Benchmarks  

E-Print Network (OSTI)

PMaC Prediction Framework to NERSC-5 SSP Benchmarks SummerAuthor: Noel Keen Introduction NERSC procurement depends onbenchmarks, in particular the NERSC SSP. Machine vendors are

Keen, Noel

2008-01-01T23:59:59.000Z

436

Energy Benchmarking And Energy Saving Assessment In High-Rise Multi-Unit Residential Buildings.  

E-Print Network (OSTI)

??The purpose of energy benchmarking is to promote efficient use of energy. Knowing that the energy used by a building is excessive is the first… (more)

Huang, Yirong

2012-01-01T23:59:59.000Z

437

Implementing Solar PV Projects on Historic Buildings and in Historic Districts  

DOE Green Energy (OSTI)

Many municipalities, particularly in older communities of the United States, have a large amount of historic buildings and districts. In addition to preserving these historic assets, many municipalities have goals or legislative requirements to procure a certain amount of energy from renewable sources and to become more efficient in their energy use; often, these requirements do not exempt historic buildings. This paper details findings from a workshop held in Denver, Colorado, in June 2010 that brought together stakeholders from both the solar and historic preservation industries. Based on these findings, this paper identifies challenges and recommends solutions for developing solar photovoltaic (PV) projects on historic buildings and in historic districts in such a way as to not affect the characteristics that make a building eligible for historic status.

Kandt, A.; Hotchkiss, E.; Walker, A.; Buddenborg, J; Lindberg, J.

2011-09-01T23:59:59.000Z

438

Benchmark study of TRIPOLI-4 through experiment and MCNP codes  

Science Conference Proceedings (OSTI)

Reliability on simulation results is essential in nuclear physics. Although MCNP5 and MCNPX are the world widely used 3D Monte Carlo radiation transport codes, alternative Monte Carlo simulation tools exist to simulate neutral and charged particles' interactions with matter. Therefore, benchmark are required in order to validate these simulation codes. For instance, TRIPOLI-4.7, developed at the French Alternative Energies and Atomic Energy Commission for neutron and photon transport, now also provides the user with a full feature electron-photon electromagnetic shower. Whereas the reliability of TRIPOLI-4.7 for neutron and photon transport has been validated yet, the new development regarding electron-photon matter interaction needs additional validation benchmarks. We will thus demonstrate how accurately TRIPOLI-4's 'deposited spectrum' tally can simulate gamma spectrometry problems, compared to MCNP's 'F8' tally. The experimental setup is based on an HPGe detector measuring the decay spectrum of an {sup 152}Eu source. These results are then compared with those given by MCNPX 2.6d and TRIPOLI-4 codes. This paper deals with both the experimental aspect and simulation. We will demonstrate that TRIPOLI-4 is a potential alternative to both MCNPX and MCNP5 for gamma-electron interaction simulation. (authors)

Michel, M. [CEA, LIST, Laboratoire Capteurs et Architectures Electroniques, F-91191 Gif-sur-Yvette (France); Coulon, R. [Canberra France, F-78182 Saint Quentin en Yvelines (France); Normand, S. [CEA, LIST, Laboratoire Capteurs et Architectures Electroniques, F-91191 Gif-sur-Yvette (France); Huot, N.; Petit, O. [CEA, DEN DANS, SERMA, F-91191 Gif-sur-Yvette (France)

2011-07-01T23:59:59.000Z

439

Benchmarking of Graphite Reflected Critical Assemblies of UO2  

Science Conference Proceedings (OSTI)

A series of experiments were carried out in 1963 at the Oak Ridge National Laboratory Critical Experiments Facility (ORCEF) for use in space reactor research programs. A core containing 93.2% enriched UO2 fuel rods was used in these experiments. The first part of the experimental series consisted of 253 tightly-packed fuel rods (1.27 cm triangular pitch) with graphite reflectors [1], the second part used 253 graphite-reflected fuel rods organized in a 1.506 cm triangular pitch [2], and the final part of the experimental series consisted of 253 beryllium-reflected fuel rods with a 1.506 cm triangular pitch. [3] Fission rate distribution and cadmium ratio measurements were taken for all three parts of the experimental series. Reactivity coefficient measurements were taken for various materials placed in the beryllium reflected core. The first part of this experimental series has been evaluated for inclusion in the International Reactor Physics Experiment Evaluation Project (IRPhEP) [4] and the International Criticality Safety Benchmark Evaluation Project (ICSBEP) Handbooks, [5] and is discussed below. These experiments are of interest as benchmarks because they support the validation of compact reactor designs with similar characteristics to the design parameters for a space nuclear fission surface power systems. [6

Margaret A. Marshall; John D. Bess

2011-11-01T23:59:59.000Z

440

Criticality Benchmark Analysis of Water-Reflected Uranium Oxyfluoride Slabs  

Science Conference Proceedings (OSTI)

A series of twelve experiments were conducted in the mid 1950's at the Oak Ridge National Laboratory Critical Experiments Facility to determine the critical conditions of a semi-infinite water-reflected slab of aqueous uranium oxyfluoride (UO2F2). A different slab thickness was used for each experiment. Results from the twelve experiment recorded in the laboratory notebook were published in Reference 1. Seven of the twelve experiments were determined to be acceptable benchmark experiments for the inclusion in the International Handbook of Evaluated Criticality Safety Benchmark Experiments. This evaluation will not only be available to handbook users for the validation of computer codes and integral cross-section data, but also for the reevaluation of experimental data used in the ANSI/ANS-8.1 standard. This evaluation is important as part of the technical basis of the subcritical slab limits in ANSI/ANS-8.1. The original publication of the experimental results was used for the determination of bias and bias uncertainties for subcritical slab limits, as documented by Hugh Clark's paper 'Subcritical Limits for Uranium-235 Systems'.

Margaret A. Marshall; John D. Bess

2009-11-01T23:59:59.000Z

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


441

Flow Batteries: A Historical Perspective  

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

Marvin Warshay *1976 Shunt Current Model, Paul Prokopius *1976 Interfaced an RFB with solar cells *1977 Electrode-Membrane-Flow Battery Testing *Largest polarization @ negative...

442

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near...  

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

time requirements, Q4 2010 price benchmarks are the most appropriate comparison for 2011 reported price data. * Reported installed prices of U.S. residential and commercial...

443

Nonlinear Seismic Benchmark Problem: Dissipativity and the 9-Story Benchmark Building  

E-Print Network (OSTI)

smart dampers (e.g., [7,8]), as well as those using more complex models of real devices (e.g., [5. JOHNSON* Abstract. Clipped-optimal control of semiactive devices performs well when the forces commanded. The cross-term and the limitations on it are explained. The results of some simulations are given

Johnson, Erik A.

444

Texas Historical Commission | Open Energy Information  

Open Energy Info (EERE)

Historical Commission Historical Commission Jump to: navigation, search Logo: Texas Historical Commission Name Texas Historical Commission Address 1511 Colorado St. Place Austin, Texas Zip 78701 Year founded 1953 Phone number 512.463.6100 Website http://www.thc.state.tx.us/ Coordinates 30.2779484°, -97.7403973° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":30.2779484,"lon":-97.7403973,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

445

Galveston Historical Foundation | Open Energy Information  

Open Energy Info (EERE)

Historical Foundation Historical Foundation Jump to: navigation, search Logo: Galveston Historical Foundation Name Galveston Historical Foundation Address 502 20th St. Place Galveston, Texas Zip 77550 Region Texas Area Number of employees 11-50 Year founded 1954 Phone number 409-765-7834 Website http://www.galvestonhistory.or Coordinates 29.3054013°, -94.7900179° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.3054013,"lon":-94.7900179,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

446

Regulating new construction in historic areas  

E-Print Network (OSTI)

This study is an examination of how the restrictiveness of different design regulations impacts the process of new construction in historic areas. The North End, South End, and Back Bay neighborhoods of Boston were identified ...

Sellers-Garcia, Oliver

2006-01-01T23:59:59.000Z

447

Benchmarking european airports based on a profitability envelope: a break-even analysis  

Science Conference Proceedings (OSTI)

In this paper a simplified benchmarking methodology is presented. This new approach is based on the computation of a discrete envelope over distributed data points. Financial and operational data from 139 European airports in 10 countries was collected ... Keywords: airport benchmarking, break-even analysis, profit maximization

Branko Bubalo

2012-09-01T23:59:59.000Z

448

Energy characterization of mobile devices and applications using power-thermal benchmarks  

Science Conference Proceedings (OSTI)

Power consumption and heat dissipation are the major factors that limit the performance and mobility of battery-powered devices. As they become key elements in the design of mobile devices and their applications, different power and thermal management ... Keywords: Energy characterization, Power benchmark, Power management, Thermal benchmark, Thermal management

Marius Marcu; Dacian Tudor; Horatiu Moldovan; Sebastian Fuicu; Mircea Popa

2009-07-01T23:59:59.000Z

449

Nuclear Data Performance Testing Using Sensitive, but Less Frequently Used ICSBEP Benchmarks  

Science Conference Proceedings (OSTI)

The International Criticality Safety Benchmark Evaluation Project (ICSBEP) has published the International Handbook of Evaluated Criticality Safety Benchmark Experiments annually since 1995. The Handbook now spans over 51,000 pages with benchmark specifications for 4,283 critical, near critical, or subcritical configurations; 24 criticality alarm placement/shielding configurations with multiple dose points for each; and 200 configurations that have been categorized as fundamental physics measurements relevant to criticality safety applications. Benchmark data in the ICSBEP Handbook were originally intended for validation of criticality safety methods and data; however, the benchmark specifications are now used extensively for nuclear data testing. There are several, less frequently used benchmarks within the Handbook that are very sensitive to thorium and certain key structural and moderating materials. Calculated results for many of those benchmarks using modern nuclear data libraries suggest there is still room for improvement. These and other highly sensitive, but rarely quoted benchmarks are highlighted and data testing results provided using the Monte Carlo N-Particle Version 5 (MCNP5) code and continuous energy ENDF/B-V, VI.8, and VII.0, JEFF-3.1, and JENDL-3.3 nuclear data libraries.

J. Blair Briggs; John D. Bess

2011-08-01T23:59:59.000Z

450

PenguinoMeter: a new file-I/O benchmark for Linux®  

Science Conference Proceedings (OSTI)

PenguinoMeter is a new open-source benchmark for Linux that measures file-system data transfer rates. PenguinoMeter allows the user to specify the file-system workload to be used in the benchmark in a very flexible manner. The workload specification ...

Ray Bryant; Dave Raddatz; Roger Sunshine

2001-11-01T23:59:59.000Z

451

Towards using and improving the NAS parallel benchmarks: a parallel patterns approach  

Science Conference Proceedings (OSTI)

The NAS parallel benchmarks, originally developed by NASA for evaluating performance of their high-performance computers, have been regarded as one of the most widely used benchmark suites for side-by-side comparisons of high-performance machines. However, ...

Vivek Kale

2010-03-01T23:59:59.000Z

452

Hawaii Department of Land and Natural Resources Historic Preservation...  

Open Energy Info (EERE)

Historic Preservation Division Jump to: navigation, search Name Hawaii Department of Land and Natural Resources Historic Preservation Division Address Kakuhihewa Building 601...

453

Oregon State Historic Preservation Office | Open Energy Information  

Open Energy Info (EERE)

Office Jump to: navigation, search Logo: Oregon State Historic Preservation Office Name Oregon State Historic Preservation Office Address 725 Summer St NE, Ste C Place Salem,...

454

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near...  

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

Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections Title Photovoltaic (PV) Pricing Trends: Historical, Recent, and Near-Term Projections Publication...

455

White House Initiative on Historically Black Colleges and Universities...  

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

White House Initiative on Historically Black Colleges and Universities White House Initiative on Historically Black Colleges and Universities How WHI-HBCU are ran White House...

456

Soy Protein ProductsChapter 1 Historical Aspects  

Science Conference Proceedings (OSTI)

Soy Protein Products Chapter 1 Historical Aspects Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry AOCS Press Downloadable pdf of Chapter 1 Historical Aspects from the book ...

457

5th Annual Historically Black Colleges and Universities (HBCU...  

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

5th Annual Historically Black Colleges and Universities (HBCU) Career Development Marketplace 5th Annual Historically Black Colleges and Universities (HBCU) Career Development...

458

Savannah River National Laboratory Meets with Historically Black...  

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

Savannah River National Laboratory Meets with Historically Black Colleges and Universities Savannah River National Laboratory Meets with Historically Black Colleges and...

459

Students, Faculty from Historically Black Colleges and Universities...  

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

Students, Faculty from Historically Black Colleges and Universities Share Research with EM Laboratory in Successful Exchange Students, Faculty from Historically Black Colleges and...

460

Office of Energy Efficiency and Renewable Energy (EERE) -Historically...  

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

Energy Efficiency and Renewable Energy (EERE) -Historically Black Colleges and Universities Office of Energy Efficiency and Renewable Energy (EERE) -Historically Black Colleges and...

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


461

Gallery of Historic Photos | Y-12 National Security Complex  

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

Gallery of Historic Photos Gallery of Historic Photos Ed Westcott Manhattan Project official photographer. All photos are by Ed Westcott, the government's official photographer for...

462

INTEGRAL BENCHMARK DATA FOR NUCLEAR DATA TESTING THROUGH THE ICSBEP AND THE NEWLY ORGANIZED IRPHEP  

Science Conference Proceedings (OSTI)

The status of the International Criticality Safety Benchmark Evaluation Project (ICSBEP) was last reported in a nuclear data conference at the International Conference on Nuclear Data for Science and Technology, ND-2004, in Santa Fe, New Mexico. Since that time the number and type of integral benchmarks have increased significantly. Included in the ICSBEP Handbook are criticality-alarm / shielding and fundamental physic benchmarks in addition to the traditional critical / subcritical benchmark data. Since ND 2004, a reactor physics counterpart to the ICSBEP, the International Reactor Physics Experiment Evaluation Project (IRPhEP) was initiated. The IRPhEP is patterned after the ICSBEP, but focuses on other integral measurements, such as buckling, spectral characteristics, reactivity effects, reactivity coefficients, kinetics measurements, reaction-rate and power distributions, nuclide compositions, and other miscellaneous-type measurements in addition to the critical configuration. The status of these two projects is discussed and selected benchmarks highlighted in this paper.

J. Blair Briggs; Lori Scott; Yolanda Rugama; Enrico Satori

2007-04-01T23:59:59.000Z

463

BSMBench: a flexible and scalable supercomputer benchmark from computational particle physics  

E-Print Network (OSTI)

Benchmarking plays a central role in the evaluation of High Performance Computing architectures. Several benchmarks have been designed that allow users to stress various components of supercomputers. In order for the figures they provide to be useful, benchmarks need to be representative of the most common real-world scenarios. In this work, we introduce BSMBench, a benchmarking suite derived from Monte Carlo code used in computational particle physics. The advantage of this suite (which can be freely downloaded from http://www.bsmbench.org/) over others is the capacity to vary the relative importance of computation and communication. This enables the tests to simulate various practical situations. To showcase BSMBench, we perform a wide range of tests on various architectures, from desktop computers to state-of-the-art supercomputers, and discuss the corresponding results. Possible future directions of development of the benchmark are also outlined.

Bennett, Ed; Jordan, Kirk; Lucini, Biagio; Patella, Agostino; Pica, Claudio; Rago, Antonio

2014-01-01T23:59:59.000Z

464

BSMBench: a flexible and scalable supercomputer benchmark from computational particle physics  

E-Print Network (OSTI)

Benchmarking plays a central role in the evaluation of High Performance Computing architectures. Several benchmarks have been designed that allow users to stress various components of supercomputers. In order for the figures they provide to be useful, benchmarks need to be representative of the most common real-world scenarios. In this work, we introduce BSMBench, a benchmarking suite derived from Monte Carlo code used in computational particle physics. The advantage of this suite (which can be freely downloaded from http://www.bsmbench.org/) over others is the capacity to vary the relative importance of computation and communication. This enables the tests to simulate various practical situations. To showcase BSMBench, we perform a wide range of tests on various architectures, from desktop computers to state-of-the-art supercomputers, and discuss the corresponding results. Possible future directions of development of the benchmark are also outlined.

Ed Bennett; Luigi Del Debbio; Kirk Jordan; Biagio Lucini; Agostino Patella; Claudio Pica; Antonio Rago

2014-01-15T23:59:59.000Z

465

DOE Solar Decathlon: California Polytechnic State University: Benchmarking  

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

Cal Poly solar-powered house on the National Mall for Solar Decathlon 2005. Cal Poly solar-powered house on the National Mall for Solar Decathlon 2005. Enlarge image The exterior of Cal Poly's house features a large deck and overhang that shades the south-facing windows and doors. (Credit: Chris Gunn/U.S. Department of Energy Solar Decathlon) Who: California Polytechnic State University What: Solar Cal Poly Where: California Polytechnic State University 1 Grand Ave. San Luis Obispo, CA 93407 Map This House Public tours: Contact the Cal Poly Renewable Energy Club at 224-805-7999 for tour information. Solar Decathlon 2005 California Polytechnic State University: Benchmarking Solar Performance The solar-powered house designed by California Polytechnic State University returned to San Luis Obispo after placing third overall in the U.S. Department of Energy Solar Decathlon 2005. It was reconstructed on campus

466

NETL: News Release - GE Sets Benchmarks for Fuel Cell Performance  

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

August 8, 2005 August 8, 2005 GE Sets Benchmarks for Fuel Cell Performance Achievements Move Efficient, Clean SOFC Technology Closer to Mainstream Energy Markets TORRANCE, CA - In the race to speed solid oxide fuel cell (SOFC) technology out of niche markets and into widespread commercial use, GE Hybrid Power Generation Systems has kicked fuel cell performance into high gear. Recent advancements have dramatically improved baseline cell performance and accelerate GE's prospects for achieving the system efficiency and cost objectives of DOE's Solid State Energy Alliance (SECA) program. Packing more power into smaller volumes is one of the breakthroughs needed to reduce the cost and expand the use of efficient, environmentally friendly fuel cells. But increasing power density isn't the only goal; as power density increases, fuel cells must continue to efficiently and reliably convert fuel to electric power.

467

Analytical Benchmark Test Set for Criticality Code Verification  

Science Conference Proceedings (OSTI)

A number of published numerical solutions to analytic eigenvalue (k{sub eff}) and eigenfunction equations are summarized for the purpose of creating a criticality verification benchmark test set. The 75-problem test set allows the user to verify the correctness of a criticality code for infinite medium and simple geometries in one- and two-energy groups, one- and two-media, and both isotropic and anisotropic neutron scattering. The problem specifications will produce both k{sub eff} = 1 and the quoted k{sub {infinity}} to at least five decimal places. Additional uses of the test set for code verification are also discussed. A list of 45 references and an appendix with k{sub {infinity}} derivations is also included.

Avneet Sood; D. K. Parsons; R. A. Forster

1999-07-01T23:59:59.000Z

468

NERSC-6 Workload Analysis and Benchmark Selection Process  

Science Conference Proceedings (OSTI)

This report describes efforts carried out during early 2008 to determine some of the science drivers for the"NERSC-6" next-generation high-performance computing system acquisition. Although the starting point was existing Greenbooks from DOE and the NERSC User Group, the main contribution of this work is an analysis of the current NERSC computational workload combined with requirements information elicited from key users and other scientists about expected needs in the 2009-2011 timeframe. The NERSC workload is described in terms of science areas, computer codes supporting research within those areas, and description of key algorithms that comprise the codes. This work was carried out in large part to help select a small set of benchmark programs that accurately capture the science and algorithmic characteristics of the workload. The report concludes with a description of the codes selected and some preliminary performance data for them on several important systems.

Antypas, Katie; Shalf, John; Wasserman, Harvey

2008-08-29T23:59:59.000Z

469

Implementing Solar Photovoltaic Projects on Historic Buildings and in Historic Districts  

SciTech Connect

Despite a global recession, the number of photovoltaic (PV) installations in the United States grew 30% from 2008 to 2009. A number of trends point toward continued growth of new PV installations. The efficiency of solar panels is increasing, while installation costs are going down. At the same time, federal, state, and local regulations are requiring that greater amounts of energy must come from renewable sources. Incentives for solar power technology implementation are being created and regulatory barriers removed. Corporations and governments are focusing on solar power to demonstrate leadership in environmental sustainability and resource conservation. Architects and builders are including PV arrays as a way to meet green building standards and property owners are seeking PV as a way to reduce their utility bills, as well as their carbon footprints. This publication focuses on the implementation of PV systems on historic properties. Many private property owners, as well as local, state, and national government entities, are seeking guidance on how best to integrate solar PV installations on historic buildings. Historic preservationists maintain that preserving, reusing, and maintaining historic structures is a key sustainable design strategy while also recognizing the importance of accommodating renewable energy technologies where they are appropriate. In some cases, however, conflicts have arisen over the installation of PV panels on historic properties. Addressing these conflicts and providing guidance regarding solutions and best practices is an important step toward resolving or eliminating barriers. Historic properties and districts in the United States provide tangible connections to the nation's past. Thousands of buildings, sites, districts, structures, and objects have been recognized for their historic and architectural significance. Local, state, and national designations of historic properties provide recognition, protection, and incentives that help to preserve those properties for future generations. At the national level, the National Register of Historic Places includes more than 86,000 listings, which encompass a total of more than 1.6 million historic resources. State registers of historic places also provide recognition and protection for historic sites and districts. Locally, more than 2,400 communities have established historic preservation ordinances. Typically implemented through zoning overlays, these local land use regulations manage changes to hundreds of thousands of historic properties. Over a period of 2 years (2007 and 2008) the U.S. Department of Energy (DOE) designated 25 major U.S. cities as Solar America Cities. DOE provided financial and technical assistance to help the cities develop comprehensive approaches to accelerate the adoption of solar energy technologies. The Solar America Cities partnerships represent the foundation of DOE's larger Solar America Communities program. As a part of this program, DOE identified the implementation of solar projects on historic properties and in historic districts as one area to address. A workshop titled 'Implementing Solar Projects on Historic Buildings and in Historic Districts' was held in Denver, Colorado, in June of 2010. Participants included representatives from the solar industry as well as historic preservationists from nonprofit organizations and government agencies at the local, state, and national levels. The workshop provided an opportunity to gain a common understanding of solar technologies and historic preservation procedures and priorities. The workshop participants also discussed some of the challenges involved in locating PV systems on historic properties and identified potential solutions. This publication is based on the discussions that occurred at this workshop and the recommendations that were developed by participants. Ideas expressed by participants in the workshop, and included in this document, do not necessarily reflect the opinion of any government council, agency, or entity.

Kandt, A.; Hotchkiss, E.; Walker, A.

2011-01-01T23:59:59.000Z

470

A Benchmarking Platform For Network-On-Chip (NOC) Multiprocessor System-On- Chips  

E-Print Network (OSTI)

Network-on-Chip (NOC) based designs have garnered significant attention from both researchers and industry over the past several years. The analysis of these designs has focused on broad topics such as NOC component micro-architecture, fault-tolerant communication, and system memory architecture. Nonetheless, the design of lowlatency, high-bandwidth, low-power and area-efficient NOC is extremely complex due to the conflicting nature of these design objectives. Benchmarks are an indispensable tool in the design process; providing thorough measurement and fair comparison between designs in order to achieve optimal results (i.e performance, cost, quality of service). This research proposes a benchmarking platform called NoCBench for evaluating the performance of Network-on-chip. Although previous research has proposed standard guidelines to develop benchmarks for Network-on-Chip, this work moves forward and proposes a System-C based simulation platform for system-level design exploration. It will provide an initial set of synthetic benchmarks for on-chip network interconnection validation along with an initial set of standardized processing cores, NOC components, and system-wide services. The benchmarks were constructed using synthetic applications described by Task Graphs For Free (TGFF) task graphs extracted from the E3S benchmark suite. Two benchmarks were used for characterization: Consumer and Networking. They are characterized based on throughput and latency. Case studies show how they can be used to evaluate metrics beyond throughput and latency (i.e. traffic distribution). The contribution of this work is two-fold: 1) This study provides a methodology for benchmark creation and characterization using NoCBench that evaluates important metrics in NOC design (i.e. end-to-end packet delay, throughput). 2) The developed full-system simulation platform provides a complete environment for further benchmark characterization on NOC based MpSoC as well as system-level design space exploration.

Malave-Bonet, Javier

2010-12-01T23:59:59.000Z

471

Historical Natural Gas Annual 1930 through 1997  

Gasoline and Diesel Fuel Update (EIA)

7 7 October 1998 Energy Information Administration Office of Oil and Gas U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy of the Department of Energy or any other organization. DOE/EIA-E-0110(97) Distribution Category/UC-960 ii Energy Information Administration / Historical Natural Gas Annual 1930 Through 1997 Contacts The Historical Natural Gas Annual is prepared by the En- ergy Information Administration, Office of Oil and Gas, Reserves and Natural Gas Division, under the direction of Joan E. Heinkel. General questions and comments concerning the contents of the Historical Natural Gas Annual may be obtained from Ann M. Ducca (202/586-6137)

472

Historical Media | Y-12 National Security Complex  

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

Historical Media Historical Media Historical Media Image of Y-12 Bulletin dated August 16, 1949 The Y-12 Bulletin was published weekly between May 1947 and sometime in the 1980s. Select a year and a month at right and then click "Retrieve" to bring back links to Adobe PDF files of bulletins printed during that time. Image of T.E.C. Bulletin dated April 1, 1946 T.E.C. Bulletin "A newspaper for the men and women of the Clinton Engineer Works-Tennessee Eastman Corporation" (PDF). Dated Monday, April 1, 1946. (Size: 3 MB) Image of John Googin Employees' Guidebook "Things you will want to know about your job at Clinton Engineer Works, Tennessee Eastman Company" (PDF). Printed about 1944. (Size: 4.8 MB) 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961

473

RELAP5-3D Results for Phase I (Exercise 2) of the OECD/NEA MHTGR-350 MW Benchmark  

SciTech Connect

The coupling of the PHISICS code suite to the thermal hydraulics system code RELAP5-3D has recently been initiated at the Idaho National Laboratory (INL) to provide a fully coupled prismatic Very High Temperature Reactor (VHTR) system modeling capability as part of the NGNP methods development program. The PHISICS code consists of three modules: INSTANT (performing 3D nodal transport core calculations), MRTAU (depletion and decay heat generation) and a perturbation/mixer module. As part of the verification and validation activities, steady state results have been obtained for Exercise 2 of Phase I of the newly-defined OECD/NEA MHTGR-350 MW Benchmark. This exercise requires participants to calculate a steady-state solution for an End of Equilibrium Cycle 350 MW Modular High Temperature Reactor (MHTGR), using the provided geometry, material, and coolant bypass flow description. The paper provides an overview of the MHTGR Benchmark and presents typical steady state results (e.g. solid and gas temperatures, thermal conductivities) for Phase I Exercise 2. Preliminary results are also provided for the early test phase of Exercise 3 using a two-group cross-section library and the Relap5-3D model developed for Exercise 2.

Gerhard Strydom

2012-06-01T23:59:59.000Z

474

A Benchmark Suite for Evaluating the Performance of the WebODE Ontology Engineering Platform  

E-Print Network (OSTI)

Abstract. Ontology tools play a key role in the development and maintenance of the Semantic Web. Hence, we need in one hand to objectively evaluate these tools, in order to analyse whether they can deal with actual and future requirements, and in the other hand to develop benchmark suites for performing these evaluations. In this paper, we describe the method we have followed to design and implement a benchmark suite for evaluating the performance of the WebODE ontology engineering workbench, along with the conclusions obtained after using this benchmark suite for evaluating WebODE. 1.

Raúl García-castro; Asunción Gómez-pérez

2004-01-01T23:59:59.000Z

475

SILENE Benchmark Critical Experiments for Criticality Accident Alarm Systems  

SciTech Connect

In October 2010 a series of benchmark experiments was conducted at the Commissariat a Energie Atomique et aux Energies Alternatives (CEA) Valduc SILENE [1] facility. These experiments were a joint effort between the US Department of Energy (DOE) and the French CEA. The purpose of these experiments was to create three benchmarks for the verification and validation of radiation transport codes and evaluated nuclear data used in the analysis of criticality accident alarm systems (CAASs). This presentation will discuss the geometric configuration of these experiments and the quantities that were measured and will present some preliminary comparisons between the measured data and calculations. This series consisted of three single-pulsed experiments with the SILENE reactor. During the first experiment the reactor was bare (unshielded), but during the second and third experiments it was shielded by lead and polyethylene, respectively. During each experiment several neutron activation foils and thermoluminescent dosimeters (TLDs) were placed around the reactor, and some of these detectors were themselves shielded from the reactor by high-density magnetite and barite concrete, standard concrete, and/or BoroBond. All the concrete was provided by CEA Saclay, and the BoroBond was provided by Y-12 National Security Complex. Figure 1 is a picture of the SILENE reactor cell configured for pulse 1. Also included in these experiments were measurements of the neutron and photon spectra with two BICRON BC-501A liquid scintillators. These two detectors were provided and operated by CEA Valduc. They were set up just outside the SILENE reactor cell with additional lead shielding to prevent the detectors from being saturated. The final detectors involved in the experiments were two different types of CAAS detectors. The Babcock International Group provided three CIDAS CAAS detectors, which measured photon dose and dose rate with a Geiger-Mueller tube. CIDAS detectors are currently in use at Y-12 in the newly constructed Highly Enriched Uranium Materials Facility. The second CAAS detector used a {sup 6}LiF TLD to absorb neutrons and a silicon detector to count the charge particles released by these absorption events. Lawrence Livermore National Laboratory provided four of these detectors, which had formerly been used at the Rocky Flats facility in the United States.

Miller, Thomas Martin [ORNL; Reynolds, Kevin H. [Y-12 National Security Complex

2011-01-01T23:59:59.000Z

476

Investigations On Historic Centers In Seismic Areas: Guidelines For The Diagnosis  

Science Conference Proceedings (OSTI)

After the earthquake that hit central Italy in 1979, many small historic centers were restored. A subsequent seismic event occurred in 1997 in Umbria-Marche regions revealed that some techniques used in the previous interventions were not successful due to low durability of new materials and/or incompatibility between the new and the existing materials and structures. An extensive investigation on four small typical historic centers in Umbria was carried out. The objectives of the research were: (i) to define a methodology for the vulnerability analysis of historic buildings at the level of the historic centre, (ii) to collect information on the effectiveness of the repair techniques both traditional and new, (iii) to set up Databases storing the information useful to prepare rescue plans, (iv) to use the collected knowledge for the implementation of reliable models for the vulnerability analysis, (v) to prepare guidelines for investigation and vulnerability analysis.

Binda, Luigia; Cardani, Giuliana [Dept. of Structural Engineering, Politecnico di Milano, P.zza L. Da Vinci 32, 20133 Milano (Italy); Modena, Claudio; Valluzzi, Maria Rosa [Dept. of Construction and Transportation Engineering, University of Padua, v. Marzolo 9, 35131 Padova (Italy); Saisi, Antonella

2008-07-08T23:59:59.000Z

477

EVALUATION OF U10MO FUEL PLATE IRRADIATION BEHAVIOR VIA NUMERICAL AND EXPERIMENTAL BENCHMARKING  

SciTech Connect

This article analyzes dimensional changes due to irradiation of monolithic plate-type nuclear fuel and compares results with finite element analysis of the plates during fabrication and irradiation. Monolithic fuel plates tested in the Advanced Test Reactor (ATR) at Idaho National Lab (INL) are being used to benchmark proposed fuel performance for several high power research reactors. Post-irradiation metallographic images of plates sectioned at the midpoint were analyzed to determine dimensional changes of the fuel and the cladding response. A constitutive model of the fabrication process and irradiation behavior of the tested plates was developed using the general purpose commercial finite element analysis package, Abaqus. Using calculated burn-up profiles of irradiated plates to model the power distribution and including irradiation behaviors such as swelling and irradiation enhanced creep, model simulations allow analysis of plate parameters that are either impossible or infeasible in an experimental setting. The development and progression of fabrication induced stress concentrations at the plate edges was of primary interest, as these locations have a unique stress profile during irradiation. Additionally, comparison between 2D and 3D models was performed to optimize analysis methodology. In particular, the ability of 2D and 3D models account for out of plane stresses which result in 3-dimensional creep behavior that is a product of these components. Results show that assumptions made in 2D models for the out-of-plane stresses and strains cannot capture the 3-dimensional physics accurately and thus 2D approximations are not computationally accurate. Stress-strain fields are dependent on plate geometry and irradiation conditions, thus, if stress based criteria is used to predict plate behavior (as opposed to material impurities, fine micro-structural defects, or sharp power gradients), unique 3D finite element formulation for each plate is required.

Samuel J. Miller; Hakan Ozaltun

2012-11-01T23:59:59.000Z

478

Sustaining knowledge in the neutron generator community and benchmarking study.  

SciTech Connect

In 2004, the Responsive Neutron Generator Product Deployment department embarked upon a partnership with the Systems Engineering and Analysis knowledge management (KM) team to develop knowledge management systems for the neutron generator (NG) community. This partnership continues today. The most recent challenge was to improve the current KM system (KMS) development approach by identifying a process that will allow staff members to capture knowledge as they learn it. This 'as-you-go' approach will lead to a sustainable KM process for the NG community. This paper presents a historical overview of NG KMSs, as well as research conducted to move toward sustainable KM.

Barrentine, Tameka C.; Kennedy, Bryan C.; Saba, Anthony W.; Turgeon, Jennifer L.; Schneider, Julia Teresa; Stubblefield, William Anthony; Baldonado, Esther

2008-03-01T23:59:59.000Z

479

Low-Energy Supersymmetry Breaking from String Flux Compactifications: Benchmark Scenarios  

E-Print Network (OSTI)

Soft supersymmetry breaking terms were recently derived for type IIB string flux compactifications with all moduli stabilised. Depending on the choice of the discrete input parameters of the compactification such as fluxes and ranks of hidden gauge groups, the string scale was found to have any value between the TeV and GUT scales. We study the phenomenological implications of these compactifications at low energy. Three realistic scenarios can be identified depending on whether the Standard Model lies on D3 or D7 branes and on the value of the string scale. For the MSSM on D7 branes and the string scale between 10^12 GeV and 10^17 GeV we find that the LSP is a neutralino, while for lower scales it is the stop. At the GUT scale the results of the fluxed MSSM are reproduced, but now with all moduli stabilised. For the MSSM on D3 branes we identify two realistic scenarios. The first one corresponds to an intermediate string scale version of split supersymmetry. The second is a stringy mSUGRA scenario. This requires tuning of the flux parameters to obtain the GUT scale. Phenomenological constraints from dark matter, (g-2)_mu and BR(b->s gamma) are considered for the three scenarios. We provide benchmark points with the MSSM spectrum, making the models suitable for a detailed phenomenological analysis.

Benjamin C. Allanach; Fernando Quevedo; Kerim Suruliz

2005-12-06T23:59:59.000Z

480

MELCOR-H2 Benchmarking of the SNL Transient Sulfuric Acid Decomposition Experiments  

SciTech Connect

MELCOR is a world-renowned nuclear reactor safety analysis code that is used to simulate both light water and gas-cooled reactors. MELCOR-H2 is an extension of MELCOR that can model detailed nuclear reactors that are fully coupled with modular secondary-system components and the sulfur iodine (SI) thermochemical cycle for the generation of hydrogen and electricity. The models are applicable to both steady state and transient calculations. Previous work has shown that the hydrogen generation rate calculated by MELCOR-H2 for the SI cycle was within the expected theoretical yield, thus providing a macroscopic confirmation that MELCOR-H2's computational approach is reasonable. However, in order to better quantify its adequacy, benchmarking of the code with experimental data is required. Sulfuric acid decomposition experiments were conducted during late 2006 at Sandia National Laboratories, and MELCOR-H2 was used to simulate them. We developed an input deck based on the experiment's geometry, as well as the initial and boundary conditions, and then proceeded to compare the experimental acid conversion efficiency and SO{sub 2} production data with the code output. The comparison showed that the simulation output was typically within less than 10% of experimental data, and that key experimental data trends such as acid conversion efficiency, molar acid flow rate, and solution mole % were computed adequately by the MELCOR-H2. (authors)

Rodriguez, Sal B.; Gauntt, Randall O.; Gelbard, Fred; Pickard, Paul; Cole, Randy; McFadden, Katherine; Drennen, Tom; Martin, Billy [Sandia National Laboratories, P.O. Box 5800, MS 0748, Albuquerque, NM 87185-0748 (United States); Louie, David; Archuleta, Louis [OMICRON Safety and Risk (United States); Revankar, Shripad T. [Purdue University (United