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Note: This page contains sample records for the topic "multi-scale modeling framework" from the National Library of EnergyBeta (NLEBeta).
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1

SPARK: A Framework for Multi-Scale Agent-Based Biomedical Modeling  

Science Conference Proceedings (OSTI)

Multi-scale modeling of complex biological systems remains a central challenge in the systems biology community. A method of dynamic knowledge representation known as agent-based modeling enables the study of higher level behavior emerging from discrete ... Keywords: Agent-Based, Computer Simulation, Framework, Models, SPARK

Alexey Solovyev; Maxim Mikheev; Leming Zhou; Joyeeta Dutta-Moscato; Cordelia Ziraldo; Gary An; Yoram Vodovotz; Qi Mi

2010-07-01T23:59:59.000Z

2

SPARK: a framework for multi-scale agent-based biomedical modeling  

Science Conference Proceedings (OSTI)

Multi-scale modeling of complex biological systems remains a central challenge in the systems biology community. A method of dynamic knowledge representation known as agent-based modeling enables the study of higher level behavior emerging from discrete ... Keywords: agent-based modeling, biomedical modeling

Alexey Solovyev; Maxim Mikheev; Leming Zhou; Joyeeta Dutta-Moscato; Cordelia Ziraldo; Gary An; Yoram Vodovotz; Qi Mi

2010-04-01T23:59:59.000Z

3

Multi-scale, Multi-physics Optimization Framework for Additively ...  

Science Conference Proceedings (OSTI)

On-Site Speaker (Planned), Tahany El-Wardany. Abstract Scope, This paper proposes an optimization framework that enables the integration of multi-scale ...

4

The G-Scheme: A framework for multi-scale adaptive model reduction  

Science Conference Proceedings (OSTI)

The numerical solution of mathematical models for reaction systems in general, and reacting flows in particular, is a challenging task because of the simultaneous contribution of a wide range of time scales to the system dynamics. However, the dynamics ... Keywords: 02.30.Hq, 02.30.Jr, 02.60.-x, 02.70.2c, 37Lxx, 37Mxx, 47.70.Fw, 76V05, 80A30, 80A32, 82.40.-g, Model reduction, Multiple time scales, Singular perturbation analysis, Stiff problems

M. Valorani; S. Paolucci

2009-07-01T23:59:59.000Z

5

Multi-Scale Modeling on Microstructures and Microstructure ...  

Science Conference Proceedings (OSTI)

Presentation Title, Multi-Scale Modeling on Microstructures and Microstructure- Property Relations of High Temperature Materials for Fossil Energy Applications.

6

Modeling complex wells with the multi-scale finite-volume method  

Science Conference Proceedings (OSTI)

In this paper, an extension of the multi-scale finite-volume (MSFV) method is devised, which allows to simulate flow and transport in reservoirs with complex well configurations. The new framework fits nicely into the data structure of the original MSFV ... Keywords: Gravity, Heterogeneous media, Multi-phase flow, Multi-scale finite-volume, Porous media, Well modeling

Patrick Jenny; Ivan Lunati

2009-02-01T23:59:59.000Z

7

Modeling of Multi-Scale Phenomena in Materials Processing - III  

Science Conference Proceedings (OSTI)

Mei Li, Ford Motor Company. Scope, The purpose of the symposium is to present the development of computational techniques for the modeling of multi-scale ...

8

Moist multi-scale models for the hurricane embryo  

SciTech Connect

Determining the finite-amplitude preconditioned states in the hurricane embryo, which lead to tropical cyclogenesis, is a central issue in contemporary meteorology. In the embryo there is competition between different preconditioning mechanisms involving hydrodynamics and moist thermodynamics, which can lead to cyclogenesis. Here systematic asymptotic methods from applied mathematics are utilized to develop new simplified moist multi-scale models starting from the moist anelastic equations. Three interesting multi-scale models emerge in the analysis. The balanced mesoscale vortex (BMV) dynamics and the microscale balanced hot tower (BHT) dynamics involve simplified balanced equations without gravity waves for vertical vorticity amplification due to moist heat sources and incorporate nonlinear advective fluxes across scales. The BMV model is the central one for tropical cyclogenesis in the embryo. The moist mesoscale wave (MMW) dynamics involves simplified equations for mesoscale moisture fluctuations, as well as linear hydrostatic waves driven by heat sources from moisture and eddy flux divergences. A simplified cloud physics model for deep convection is introduced here and used to study moist axisymmetric plumes in the BHT model. A simple application in periodic geometry involving the effects of mesoscale vertical shear and moist microscale hot towers on vortex amplification is developed here to illustrate features of the coupled multi-scale models. These results illustrate the use of these models in isolating key mechanisms in the embryo in a simplified content.

Majda, Andrew J. [New York University; Xing, Yulong [ORNL; Mohammadian, Majid [University of Ottawa, Canada

2010-01-01T23:59:59.000Z

9

A Multi-scale Agent-Based Distributed Simulation Framework for Groundwater Pollution Management  

Science Conference Proceedings (OSTI)

Groundwater is like dark matter--we know very little apart from the fact that it is hugely important. Given the scarcity of data, mathematical modelling can come to the rescue but existing groundwater models are mainly restricted to simulate the transport ... Keywords: groundwater, bioremediation, distributed simulation, multi-scale modelling, agent-based systems, individual-based models

Susanne I. Schmidt; Cristian Picioreanu; Bart Craenen; Rae Mackay; Jan-Ulrich Kreft; Georgios Theodoropoulos

2011-09-01T23:59:59.000Z

10

Science based integrated approach to advanced nuclear fuel development - integrated multi-scale multi-physics hierarchical modeling and simulation framework Part III: cladding  

Science Conference Proceedings (OSTI)

Advancing the performance of Light Water Reactors, Advanced Nuclear Fuel Cycles, and Advanced Reactors, such as the Next Generation Nuclear Power Plants, requires enhancing our fundamental understanding of fuel and materials behavior under irradiation. The capability to accurately model the nuclear fuel systems to develop predictive tools is critical. Not only are fabrication and performance models needed to understand specific aspects of the nuclear fuel, fully coupled fuel simulation codes are required to achieve licensing of specific nuclear fuel designs for operation. The backbone of these codes, models, and simulations is a fundamental understanding and predictive capability for simulating the phase and microstructural behavior of the nuclear fuel system materials and matrices. In this paper we review the current status of the advanced modeling and simulation of nuclear reactor cladding, with emphasis on what is available and what is to be developed in each scale of the project, how we propose to pass information from one scale to the next, and what experimental information is required for benchmarking and advancing the modeling at each scale level.

Tome, Carlos N [Los Alamos National Laboratory; Caro, J A [Los Alamos National Laboratory; Lebensohn, R A [Los Alamos National Laboratory; Unal, Cetin [Los Alamos National Laboratory; Arsenlis, A [LLNL; Marian, J [LLNL; Pasamehmetoglu, K [INL

2010-01-01T23:59:59.000Z

11

Multi-Scale Kernel Latent Variable Models for Nonlinear Time Series Pattern Matching  

Science Conference Proceedings (OSTI)

In this paper we propose a method for nonlinear time series pattern matching: "Multi-Scale Kernel Latent Variable (MSKLV) models". The pattern matching methodology includes multi-scale analysis using wavelet decomposition of time series and finding latent ...

B. Venkataramana Kini; C. Chandra Sekhar

2008-01-01T23:59:59.000Z

12

Multi-scale Modelling Applied to Non Linear Constitutive Equations  

Science Conference Proceedings (OSTI)

A Continuum General Noise Brownian Thermostat with Applications to Film Morphology · A Multiscale, Nonlinear, Modeling Framework Enabling the Design and ...

13

Multi-Scale Modeling to Predict Properties of Thermoplastic ...  

Science Conference Proceedings (OSTI)

A Continuum General Noise Brownian Thermostat with Applications to Film Morphology · A Multiscale, Nonlinear, Modeling Framework Enabling the Design and ...

14

ANL/ALCF/ESP-13/8 Using Multi-scale Dynamic Rupture Models to  

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

Using Multi-scale Dynamic Rupture Models to Improve Ground Motion Estimates PI: Thomas Jordan ESP Postdoc: Geoffrey Ely Science Overview This project uses dynamic rupture...

15

Multi-Scale Multi-Dimensional Model for Better Cell Design and Management (Presentation)  

DOE Green Energy (OSTI)

Describes NREL's R&D to develop a multi-scale model to assist in designing better, more reliable lithium-ion battery cells for advanced vehicles.

Kim, G.-H.; Smith, K.

2008-09-01T23:59:59.000Z

16

Multi-Scale Modeling of Nano Aluminum Particle Ignition and Combustion  

E-Print Network (OSTI)

NEEM MURI Multi-Scale Modeling of Nano Aluminum Particle Ignition and Combustion Multi-Scale Modeling of Nano Aluminum Particle Ignition and Combustion Puneesh Puri and Vigor Yang The Pennsylvania Aluminum Particle Combustion · Aluminum oxide cap formed under the effect of surface tension · Oxidized

Yang, Vigor

17

Using Multi-scale Dynamic Rupture Models to Improve Ground Motion...  

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

Multi-scale Dynamic Rupture Models to Improve Ground Motion Estimates PI Name: Thomas Jordan PI Email: tjordan@usc.edu Institution: USC Allocation Program: ESP Allocation Hours at...

18

Automated Regularization Parameter Selection in Multi-Scale Total Variation Models for Image Restoration  

Science Conference Proceedings (OSTI)

Multi-scale total variation models for image restoration are introduced. The models utilize a spatially dependent regularization parameter in order to enhance image regions containing details while still sufficiently smoothing homogeneous features. The ... Keywords: Hierarchical decomposition, Local variance estimator, Order statistics, Primal-dual method, Semismooth Newton method, Spatially dependent regularization parameter, Total variation regularization

Yiqiu Dong; Michael Hintermüller; M. Monserrat Rincon-Camacho

2011-05-01T23:59:59.000Z

19

Integration of regional to outcrop digital data: 3D visualisation of multi-scale geological models  

Science Conference Proceedings (OSTI)

Multi-scale geological models contain three-dimensional, spatially referenced data, typically spanning at least six orders of magnitude from outcrop to regional scale. A large number of different geological and geophysical data sources can be combined ... Keywords: Digital geological mapping, Immersive visualisation, Terrestrial laser-scanning, User interaction, Virtual outcrop models

R. R. Jones; K. J. W. McCaffrey; P. Clegg; R. W. Wilson; N. S. Holliman; R. E. Holdsworth; J. Imber; S. Waggott

2009-01-01T23:59:59.000Z

20

Multi-scale modeling and experimental investigations of geopolymeric gels at elevated temperatures  

Science Conference Proceedings (OSTI)

Geopolymers are an emerging class of cementitious binders formed by aluminum-silica rich activating materials. Experimental results indicate that geopolymer concrete is relatively stable at elevated temperatures, and could be possibly utilized in applications ... Keywords: Geopolymer concrete, High temperature applications, Microstructure characterization, Multi-scale modeling

Kunal Kupwade-Patil, Fernando Soto, Ancy Kunjumon, Erez N. Allouche, Daniela S. Mainardi

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

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.

22

Multi-scale Modeling of Microstructure Deformation in Material ...  

Science Conference Proceedings (OSTI)

Modeling Metal Powder Compaction Using Combined Finite and Discrete .... Optimization of Thermal Cycle for Rails with Respect to the Wear Resistance: ...

23

Multi-scale plasma simulation by the interlocking of magnetohydrodynamic model and particle-in-cell kinetic model  

Science Conference Proceedings (OSTI)

Many kinds of simulation models have been developed to understand the complex plasma systems. However, these simulation models have been separately performed because the fundamental assumption of each model is different and restricts the physical processes ... Keywords: Interlocked simulation, MHD, Multi-scale, PIC, Plasma

Tooru Sugiyama; Kanya Kusano

2007-12-01T23:59:59.000Z

24

Using Multi-scale Dynamic Rupture Models to Improve Ground Motion Estimates  

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

Earthquake simulations help scientists understand the hazards posed by Earthquake simulations help scientists understand the hazards posed by future earthquakes. Earthquake computational models are validated by simulating well-recorded historical earthquakes and comparing simulation results to observational data. The purple border shows the extent of the 3-D structural model in the 3-D inversion. Events in red, with stations in blue. En-Jui Lee, University of Wyoming Using Multi-scale Dynamic Rupture Models to Improve Ground Motion Estimates PI Name: Thomas Jordan PI Email: tjordan@usc.edu Institution: USC Allocation Program: ESP Allocation Hours at ALCF: 150 Million Year: 2010 to 2013 Research Domain: Earth Science Researchers will use Southern California Earthquake Center (SCEC) dynamic rupture simulation software to investigate high-frequency seismic energy

25

Overview of Computer-Aided Engineering of Batteries and Introduction to Multi-Scale, Multi-Dimensional Modeling of Li-Ion Batteries (Presentation)  

DOE Green Energy (OSTI)

This 2012 Annual Merit Review presentation gives an overview of the Computer-Aided Engineering of Batteries (CAEBAT) project and introduces the Multi-Scale, Multi-Dimensional model for modeling lithium-ion batteries for electric vehicles.

Pesaran, A.; Kim, G. H.; Smith, K.; Santhanagopalan, S.; Lee, K. J.

2012-05-01T23:59:59.000Z

26

Exploiting multi-scale parallelism for large scale numerical modelling of laser wakefield accelerators  

E-Print Network (OSTI)

A new generation of laser wakefield accelerators, supported by the extreme accelerating fields generated in the interaction of PW-Class lasers and underdense targets, promises the production of high quality electron beams in short distances for multiple applications. Achieving this goal will rely heavily on numerical modeling for further understanding of the underlying physics and identification of optimal regimes, but large scale modeling of these scenarios is computationally heavy and requires efficient use of state-of-the-art Petascale supercomputing systems. We discuss the main difficulties involved in running these simulations and the new developments implemented in the OSIRIS framework to address these issues, ranging from multi-dimensional dynamic load balancing and hybrid distributed / shared memory parallelism to the vectorization of the PIC algorithm. We present the results of the OASCR Joule Metric program on the issue of large scale modeling of LWFA, demonstrating speedups of over 1 order of magni...

Fonseca, Ricardo A; Fiúza, Frederico; Davidson, Asher; Tsung, Frank S; Mori, Warren B; Silva, Luís O

2013-01-01T23:59:59.000Z

27

Procedure to construct a multi-scale coarse-grained model of DNA-coated colloids from experimental data  

E-Print Network (OSTI)

We present a quantitative, multi-scale coarse-grained model of DNA coated colloids. The parameters of this model are transferable and are solely based on experimental data. As a test case, we focus on nano-sized colloids carrying single-stranded DNA strands of length comparable to the colloids' size. We show that in this regime, the common theoretical approach of assuming pairwise additivity of the colloidal pair interactions leads to quantitatively and sometimes even qualitatively wrong predictions of the phase behaviour of DNA-grafted colloids. Comparing to experimental data, we find that our coarse-grained model correctly predicts the equilibrium structure and melting temperature of the formed solids. Due to limited experimental information on the persistence length of single-stranded DNA, some quantitative discrepancies are found in the prediction of spatial quantities. With the availability of better experimental data, the present approach provides a path for the rational design of DNA-functionalised building blocks that can self-assemble in complex, three-dimensional structures.

Bianca M. Mladek; Julia Fornleitner; Francisco J. Martinez-Veracoechea; Alexandre Dawid; Daan Frenkel

2013-05-03T23:59:59.000Z

28

Language pyramid and multi-scale text analysis  

Science Conference Proceedings (OSTI)

The classical Bag-of-Word (BOW) model represents a document as a histogram of word occurrence, losing the spatial information that is invaluable for many text analysis tasks. In this paper, we present the Language Pyramid (LaP) model, which ... Keywords: bag of word, language pyramid, multi-scale language models, multi-scale text analysis, multi-scale text kernel, text spatial contents modeling

Shuang-Hong Yang; Hongyuan Zha

2010-10-01T23:59:59.000Z

29

A generic multi-scale modeling framework for reactive observing systems: an overview  

Science Conference Proceedings (OSTI)

Observing systems facilitate scientific studies by instrumenting the real world and collecting corresponding measurements, with the aim of detecting and tracking phenomena of interest. A wide range of critical environmental monitoring objectives in resource ...

Leana Golubchik; David Caron; Abhimanyu Das; Amit Dhariwal; Ramesh Govindan; David Kempe; Carl Oberg; Abhishek Sharma; Beth Stauffer; Gaurav Sukhatme; Bin Zhang

2006-05-01T23:59:59.000Z

30

From systems biology to photosynthesis and whole-plant modeling: a conceptual model for integrating multi-scale networks  

SciTech Connect

Network analysis is now a common statistical tool for molecular biologists. Network algorithms are readily used to model gene, protein and metabolic correlations providing insight into pathways driving biological phenomenon. One output from such an analysis is a candidate gene list that can be responsible, in part, for the biological process of interest. The question remains, however, as to whether molecular network analysis can be used to inform process models at higher levels of biological organization. In our previous work, transcriptional networks derived from three plant species were constructed, interrogated for orthology and then correlated to photosynthetic inhibition at elevated temperature. One unique aspect of that study was the link from co-expression networks to net photosynthesis. In this addendum, we propose a conceptual model where traditional network analysis can be linked to whole-plant models thereby informing predictions on key processes such as photosynthesis, nutrient uptake and assimilation, and C partitioning.

Weston, David [ORNL; Hanson, Paul J [ORNL; Norby, Richard J [ORNL; Tuskan, Gerald A [ORNL; Wullschleger, Stan D [ORNL

2012-01-01T23:59:59.000Z

31

Multi-Scale Multi-Dimensional Li-Ion Battery Model for Better Design and Management (Presentation)  

DOE Green Energy (OSTI)

The developed model used is to provide a better understanding and help answer engineering questions about improving the design, operational strategy, management, and safety of cells.

Kim, G.-H.; Smith, K.

2008-10-01T23:59:59.000Z

32

Evaluation Study for Large Prismatic Lithium-Ion Cell Designs Using Multi-Scale Multi-Dimensional Battery Model (Presentation)  

Science Conference Proceedings (OSTI)

Addresses battery requirements for electric vehicles using a model that evaluates physical-chemical processes in lithium-ion batteries, from atomic variations to vehicle interface controls.

Kim, G. H.; Smith, K.

2009-05-01T23:59:59.000Z

33

Evaluating WRF-Chem multi-scale model in simulating aerosol radiative properties over the tropics – A case study over India  

Science Conference Proceedings (OSTI)

We utilized WRF-Chem multi-scale model to simulate the regional distribution of aerosols, optical properties and its effect on radiation over India for a winter month. The model is evaluated using measurements obtained from upper-air soundings, AERONET sun photometers, various satellite instruments, and pyranometers operated by the Indian Meteorological Department. The simulated downward shortwave flux was overestimated when the effect of aerosols on radiation and clouds was neglected. Downward shortwave radiation from a simulation that included aerosol-radiation interaction processes was 5 to 25 Wm{sup -2} closer to the observations, while a simulation that included aerosol-cloud interaction processes were another 1 to 20 Wm{sup -2} closer to the observations. For the few observations available, the model usually underestimated particulate concentration. This is likely due to turbulent mixing, transport errors and the lack of secondary organic aerosol treatment in the model. The model efficiently captured the broad regional hotspots such as high aerosol optical depth over Indo-Gangetic basin as well as the northwestern and southern part of India. The regional distribution of aerosol optical depth compares well with AVHRR aerosol optical depth and the TOMS aerosol index. The magnitude and wavelength-dependence of simulated aerosol optical depth was also similar to the AERONET observations across India. Differences in surface shortwave radiation between simulations that included and neglected aerosol-radiation interactions were as high as -25 Wm{sup -2}, while differences in surface shortwave radiation between simulations that included and neglect aerosol-radiation-cloud interactions were as high as -30 Wm{sup -2}. The spatial variations of these differences were also compared with AVHRR observation. This study suggests that the model is able to qualitatively simulate the impact of aerosols on radiation over India; however, additional measurements of particulate mass and composition are needed to fully evaluate whether the aerosol precursor emissions are adequate when simulating radiative forcing in the region.

Seethala, C.; Pandithurai, G.; Fast, Jerome D.; Polade, Suraj D.; Reddy, M. S.; Peckham, Steven E.

2012-01-24T23:59:59.000Z

34

Multiscale Multiphysics Lithium-Ion Battery Model with Multidomain Modular Framework  

Science Conference Proceedings (OSTI)

Lithium-ion batteries (LIBs) powering recent wave of personal ubiquitous electronics are also believed to be a key enabler of electrification of vehicle powertrain on the path toward sustainable transportation future. Over the past several years, National Renewable Energy Laboratory (NREL) has developed the Multi-Scale Multi-Domain (MSMD) model framework, which is an expandable platform and a generic modularized flexible framework resolving interactions among multiple physics occurring in varied length and time scales in LIB[1]. NREL has continued to enhance the functionality of the framework and to develop constituent models in the context of the MSMD framework responding to U.S. Department of Energy's CAEBAT program objectives. This talk will introduce recent advancements in NREL's LIB modeling research in regards of scale-bridging, multi-physics integration, and numerical scheme developments.

Kim, G. H.

2013-01-01T23:59:59.000Z

35

Fast computation of multi-scale combustion systems  

E-Print Network (OSTI)

In the present work, we illustrate the process of constructing a simplified model for complex multi-scale combustion systems. To this end, reduced models of homogeneous ideal gas mixtures of methane and air are first obtained by the novel Relaxation Redistribution Method (RRM) and thereafter used for the extraction of all the missing variables in a reactive flow simulation with a global reaction model.

Chiavazzo, Eliodoro; Asinari, Pietro

2010-01-01T23:59:59.000Z

36

A framework for linguistic modelling  

Science Conference Proceedings (OSTI)

A new framework for linguistic reasoning is proposed based on a random set model of the degree of appropriateness of a label. Labels are assumed to be chosen from a finite predefined set of labels and the set of appropriate labels for a value is defined ... Keywords: Bayesian inference, fuzzy labels, label semantics, linguistic constraints, random sets

Jonathan Lawry

2004-05-01T23:59:59.000Z

37

A Collaborative Informatics Infrastructure for Multi-Scale Science  

Science Conference Proceedings (OSTI)

The Collaboratory for Multi-scale Chemical Science (CMCS) is developing a powerful informatics-based approach to synthesizing multi-scale information in support of systems-based research and is applying it within combustion science. An open source multi-scale ... Keywords: collaboratory, community data, cyberenvironment, knowledge grid, multi-scale data, provenance, system science

James D. Myers; Thomas C. Allison; Sandra Bittner; Brett Didier; Michael Frenklach; William H. Green, Jr.; Yen-Ling Ho; John Hewson; Wendy Koegler; Carina Lansing; David Leahy; Michael Lee; Renata Mccoy; Michael Minkoff; Sandeep Nijsure; Gregor Von Laszewski; David Montoya; Luwi Oluwole; Carmen Pancerella; Reinhardt Pinzon; William Pitz; Larry A. Rahn; Branko Ruscic; Karen Schuchardt; Eric Stephan; A. Wagner; Theresa Windus; Christine Yang

2005-10-01T23:59:59.000Z

38

A multi-scale biophysical model to inform regional management of coral reefs in the western Philippines and South China Sea  

Science Conference Proceedings (OSTI)

The health and functioning of coral reef ecosystems worldwide is in decline, and in the face of increasing anthropogenic stress, the rate of decline of these important ecosystems is set to accelerate. Mitigation strategies at regional scales are costly, ... Keywords: CORSET, Connectivity, Coral reef, Decision support, Ecosystem model, Management, Philippines, Regional scale, South China Sea

J. Melbourne-Thomas; C. R. Johnson; P. M. Aliño; R. C. Geronimo; C. L. Villanoy; G. G. Gurney

2011-01-01T23:59:59.000Z

39

Cryptic Faulting and Multi-Scale Geothermal Fluid Connections...  

Open Energy Info (EERE)

Cryptic Faulting and Multi-Scale Geothermal Fluid Connections in the Dixie Valley-Central Nevada Seismic Belt Area- Implications from Mt Resistivity Surveying Jump to: navigation,...

40

Metadata in the collaboratory for multi-scale chemical science  

Science Conference Proceedings (OSTI)

The goal of the Collaboratory for the Multi-scale Chemical Sciences (CMCS) [1] is to develop an informatics-based approach to synthesizing multi-scale chemistry information to create knowledge in the chemical sciences. CMCS is using a portal and metadata-aware ... Keywords: Dublin Core, WebDAV, chemistry, collaboratory, knowledge management, metadata

Carmen Pancerella; John Hewson; Wendy Koegler; David Leahy; Michael Lee; Larry Rahn; Christine Yang; James D. Myers; Brett Didier; Renata McCoy; Karen Schuchardt; Eric Stephan; Theresa Windus; Kaizar Amin; Sandra Bittner; Carina Lansing; Michael Minkoff; Sandeep Nijsure; Gregor von Laszewski; Reinhardt Pinzon; Branko Ruscic; Al Wagner; Baoshan Wang; William Pitz; Yen-Ling Ho; David Montoya; Lili Xu; Thomas C. Allison; William H. Green, Jr.; Michael Frenklach

2003-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Classification of coal images by a multi-scale segmentation techniques  

Science Conference Proceedings (OSTI)

This paper describes development of an automated and efficient technique for classifying different major maceral groups within polished coal blocks. Coal utilisation processes can be significantly affected by the distribution of macerals in the feed ... Keywords: coal images classification, computational complexity, image classification, image segmentation, maceral groups, multi-scale segmentation techniques, pixel values, polished coal blocks, probability, statistical model, transition distribution

1995-11-01T23:59:59.000Z

42

Frameworks for model-driven development of web applications  

Science Conference Proceedings (OSTI)

This paper describes model driven development of dynamic web application using a few different frameworks. Those are the following open source Java frameworks: Modelibra, ModelibraWicket and Wicket. Modelibra is a domain model framework. ModelibraWicket ... Keywords: application development, framework, model, web component

Vensada Okanovi?; Dzenana Donko; Tadej Mateljan

2010-11-01T23:59:59.000Z

43

Multi-Scale Multi-physics Methods Development for the Calculation of Hot-Spots in the NGNP  

Science Conference Proceedings (OSTI)

Radioactive gaseous fission products are released out of the fuel element at a significantly higher rate when the fuel temperature exceeds 1600°C in high-temperature gas-cooled reactors (HTGRs). Therefore, it is of paramount importance to accurately predict the peak fuel temperature during all operational and design-basis accident conditions. The current methods used to predict the peak fuel temperature in HTGRs, such as the Next-Generation Nuclear Plant (NGNP), estimate the average fuel temperature in a computational mesh modeling hundreds of fuel pebbles or a fuel assembly in a pebble-bed reactor (PBR) or prismatic block type reactor (PMR), respectively. Experiments conducted in operating HTGRs indicate considerable uncertainty in the current methods and correlations used to predict actual temperatures. The objective of this project is to improve the accuracy in the prediction of local "hot" spots by developing multi-scale, multi- physics methods and implementing them within the framework of established codes used for NGNP analysis. The multi-scale approach which this project will implement begins with defining suitable scales for a physical and mathematical model and then deriving and applying the appropriate boundary conditions between scales. The macro scale is the greatest length that describes the entire reactor, whereas the meso scale models only a fuel block in a prismatic reactor and ten to hundreds of pebbles in a pebble bed reactor. The smallest scale is the micro scale--the level of a fuel kernel of the pebble in a PBR and fuel compact in a PMR--which needs to be resolved in order to calculate the peak temperature in a fuel kernel.

Downar, Thomas; Seker, Volkan

2013-04-30T23:59:59.000Z

44

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

45

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

46

A framework for modeling rail transport vulnerability  

Science Conference Proceedings (OSTI)

Railroads represent one of the most efficient methods of long-haul transport for bulk commodities, from coal to agricultural products. Over the past fifty years, the rail network has contracted while tonnage has increased. Service, geographically, has been abandoned along short haul routes and increased along major long haul routes, resulting in a network that is more streamlined. The current rail network may be very vulnerable to disruptions, like the failure of a trestle. This paper proposes a framework to model rail network vulnerability and gives an application of this modeling framework in analyzing rail network vulnerability for the State of Washington. It concludes with a number of policy related issues that need to be addressed in order to identify, plan, and mitigate the risks associated with the sudden loss of a bridge or trestle.

Peterson, Steven K [ORNL; Church, Richard L. [University of California, Santa Barbara

2008-01-01T23:59:59.000Z

47

First-principles and Multi-scale  

Science Conference Proceedings (OSTI)

Mar 4, 2013 ... Modeling porous corrosion deposits (CRUD) in nuclear reactors is a ... Most structural materials are multiphase, where deformation is often ...

48

Collaborating for Multi-Scale Chemical Science  

SciTech Connect

Advanced model reduction methods were developed and integrated into the CMCS multiscale chemical science simulation software. The new technologies were used to simulate HCCI engines and burner flames with exceptional fidelity.

William H. Green

2006-07-14T23:59:59.000Z

49

Short communication: A generic framework for land-use modelling  

Science Conference Proceedings (OSTI)

In this paper we present the generic modelling system SITE (SImulation of Terrestrial Environments), a software package to develop and apply models simulating regional land-use dynamics. The modelling system includes (i) a framework managing the model ... Keywords: Cellular automata, Genetic algorithm, Integrated framework, Land-use model, Map comparison

Christian Schweitzer; Joerg A. Priess; Subhashree Das

2011-08-01T23:59:59.000Z

50

Multi-scale Simulation Methodology for Stress Assessment in 3D IC: Effect of Die Stacking on Device Performance  

Science Conference Proceedings (OSTI)

Potential challenges with managing mechanical stress distributions and the consequent effects on device performance for advanced 3D integrated circuit (IC) technologies are outlined. A set of physics-based compact models for a multi-scale simulation, ... Keywords: 3D IC, FEA, Layout, Packaging, Strain engineering, Stress, TSV

Valeriy Sukharev; Armen Kteyan; Jun-Ho Choy; Henrik Hovsepyan; Ara Markosian; Ehrenfried Zschech; Rene Huebner

2012-02-01T23:59:59.000Z

51

Modeling Framework and Associated Simulation Tools for the ...  

Science Conference Proceedings (OSTI)

A modeling framework and the associated simulation tools are presented. It allows the ... Thermochemical Degradation Mechanisms of SiC/BN/SiC Composites.

52

Microsoft PowerPoint - Multi-Scale Computational_Perepezko  

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

Scale Computational Design Scale Computational Design and Synthesis of Protective Smart Coatings for Refractory Metal Alloys John H. Perepezko (PI), Otto J. Lu-Steffes Dept. Materials Science & Engineering, University of Wisconsin-Madison Grant Number: FE0007377 Performance Period: 5/31/12-6/11/13 OUTLINE: * Background on coating design and synthesis * Gaseous Computational Thermodynamic Designs for Coating Deposition Process * Phase Stability Analysis on the Coating Phase Constituents; emphasis on extended alloying capability * Microstructure-based FEA designs in Mo-RM-Si-B Coating Structures * Synthesis of Mo-Ti/Zr-Si-B Coatings * Oxidation tests at ultra-high temperatures Multi-scale Designs & Synthesis Approach for Mo-Si-B Based Smart Coatings

53

A framework for formal modeling and analysis of organizations  

Science Conference Proceedings (OSTI)

A new, formal, role-based, framework for modeling and analyzing both real world and artificial organizations is introduced. It exploits static and dynamic properties of the organizational model and includes the (frequently ignored) environment. The transition ... Keywords: Analysis, Computational, Logic-based, Modeling, Organization model, Simulation, Verification

Catholijn M. Jonker; Alexei Sharpanskykh; Jan Treur; Pinar Yolum

2007-08-01T23:59:59.000Z

54

A framework for multi-resolution modeling of sustainable manufacturing  

Science Conference Proceedings (OSTI)

This paper proposes a multi-resolution framework for application of system dynamics modeling to sustainable manufacturing. Sustainable manufacturing involves interaction of four complex systems namely manufacturing, environmental, financial, and social ...

Sanjay Jain; Deogratias Kibira

2010-12-01T23:59:59.000Z

55

Multi-scale Modeling and Experimental Validation of the Mechanical ...  

Science Conference Proceedings (OSTI)

Effects of Water Radiolysis on Stellite-6 Corrosion: Dependence on pH and Temperature · Environmentally Assisted Cracking Susceptibility Assessment of AP ...

56

Integrated Global System Modeling Framework | Open Energy Information  

Open Energy Info (EERE)

Integrated Global System Modeling Framework Integrated Global System Modeling Framework Jump to: navigation, search LEDSGP green logo.png FIND MORE DIA TOOLS This tool is part of the Development Impacts Assessment (DIA) Toolkit from the LEDS Global Partnership. Tool Summary LAUNCH TOOL Name: Integrated Global System Modeling Framework Agency/Company /Organization: MIT Joint Program on the Science and Policy of Global Change Sector: Climate, Energy Focus Area: Renewable Energy Phase: Determine Baseline, Evaluate Options Topics: - Macroeconomic Resource Type: Software/modeling tools User Interface: Desktop Application Complexity/Ease of Use: Not Available Website: globalchange.mit.edu/research/IGSM Cost: Free Related Tools Transport Co-benefits Calculator General Equilibrium Modeling Package (GEMPACK)

57

Optimal Multi-scale Capacity Planning under Hourly Varying Electricity Prices  

E-Print Network (OSTI)

1 Optimal Multi-scale Capacity Planning under Hourly Varying Electricity Prices Sumit Mitra Ignacio;2 Motivation of this work · Deregulation of the electricity markets caused electricity prices to be highly? (retrofit) · Challenge: Multi-scale nature of the problem! Hourly varying electricity prices vs. 10-15 years

Grossmann, Ignacio E.

58

Multi-scale finite-volume method for elliptic problems in subsurface flow simulation  

Science Conference Proceedings (OSTI)

In this paper we present a multi-scale finite-volume (MSFV) method to solve elliptic problems with many spatial scales arising from flow in porous media. The method efficiently captures the effects of small scales on a coarse grid, is conservative, and ... Keywords: finite-volume, multi-scale physics, subsurface flow, upscaling

P. Jenny; S. H. Lee; H. A. Tchelepi

2003-05-01T23:59:59.000Z

59

An Integrated Framework for Parametric Design Using Building Energy Models  

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

An Integrated Framework for Parametric Design Using Building Energy Models An Integrated Framework for Parametric Design Using Building Energy Models Speaker(s): Bryan Eisenhower Date: September 22, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Michael Wetter In this talk we will present a framework for analyses of building energy models including uncertainty and sensitivity analysis, optimization, calibration, and failure mode effect analysis. The methodology begins with efficient uniformly ergodic numerical sampling and regression analysis based on machine learning to derive an analytic representation of the full energy model (e.g. EnergyPlus, TRNSYS, etc). Once these steps are taken, and an analytical representation of the dynamics is obtained, multiple avenues for analysis are opened that were previously impeded by the

60

A multiphase constitutive modeling framework for unsaturated soil behavior  

E-Print Network (OSTI)

We develop a framework for constitutive modeling of unsaturated soils that has the embedded elements of lower scale grain to grain contacts. Continuum models developed from this framework will possess two different phases idealizing the solid grains and their interactions. As a consequence, two different constitutive relationships, corresponding to the grain to grain contact and bulk behavior, co-exist in a constitutive model and govern the response of the model. To be specific, grain to grain sliding under dry or wet condition is idealized and appears as a simple contact law embedded in a continuum framework. There is no need to define plastic strain, as this quantity naturally emerges at the continuum scale as the consequence of frictional sliding at the lower scale. In addition, the effective stress can be naturally worked out from the grain to grain contact law embedded in the model without being subjected to any interpretation. This, in our opinion, is a closer representation of unsaturated soil behavior, compared to existing continuum approaches that map everything onto a single stress-strain relationship. In this paper, the framework is presented in its simplest form that takes into account sliding on a single orientation. Grain to grain contact law with capillary effects is used for the demonstration of the concept, and the technical details behind it. Generalization of the framework for better representation of unsaturated soil behavior will also be sketched out.

Giang D. Nguyen; Yixiang Gan

2013-10-31T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A model-driven choreography conceptual framework  

Science Conference Proceedings (OSTI)

A number of languages exist that try to model the external visible behavior of services. However, they constitute incomplete solutions, either because, they do not include proper support for semantics, they have a lack of technological independence, ... Keywords: Choreography, MEP, SOA, Semantic Services

Sinuhe Arroyo; Alistair Duke; José-Manuel López-Cobo; Miguel-Angel Sicilia

2007-03-01T23:59:59.000Z

62

Multi-Scale Initial Conditions For Cosmological Simulations  

SciTech Connect

We discuss a new algorithm to generate multi-scale initial conditions with multiple levels of refinements for cosmological 'zoom-in' simulations. The method uses an adaptive convolution of Gaussian white noise with a real-space transfer function kernel together with an adaptive multi-grid Poisson solver to generate displacements and velocities following first- (1LPT) or second-order Lagrangian perturbation theory (2LPT). The new algorithm achieves rms relative errors of the order of 10{sup -4} for displacements and velocities in the refinement region and thus improves in terms of errors by about two orders of magnitude over previous approaches. In addition, errors are localized at coarse-fine boundaries and do not suffer from Fourier-space-induced interference ringing. An optional hybrid multi-grid and Fast Fourier Transform (FFT) based scheme is introduced which has identical Fourier-space behaviour as traditional approaches. Using a suite of re-simulations of a galaxy cluster halo our real-space-based approach is found to reproduce correlation functions, density profiles, key halo properties and subhalo abundances with per cent level accuracy. Finally, we generalize our approach for two-component baryon and dark-matter simulations and demonstrate that the power spectrum evolution is in excellent agreement with linear perturbation theory. For initial baryon density fields, it is suggested to use the local Lagrangian approximation in order to generate a density field for mesh-based codes that is consistent with the Lagrangian perturbation theory instead of the current practice of using the Eulerian linearly scaled densities.

Hahn, Oliver; /KIPAC, Menlo Park; Abel, Tom; /KIPAC, Menlo Park /ZAH, Heidelberg /HITS, Heidelberg

2011-11-04T23:59:59.000Z

63

3-D HYDRODYNAMIC MODELING IN A GEOSPATIAL FRAMEWORK  

SciTech Connect

3-D hydrodynamic models are used by the Savannah River National Laboratory (SRNL) to simulate the transport of thermal and radionuclide discharges in coastal estuary systems. Development of such models requires accurate bathymetry, coastline, and boundary condition data in conjunction with the ability to rapidly discretize model domains and interpolate the required geospatial data onto the domain. To facilitate rapid and accurate hydrodynamic model development, SRNL has developed a pre- and post-processor application in a geospatial framework to automate the creation of models using existing data. This automated capability allows development of very detailed models to maximize exploitation of available surface water radionuclide sample data and thermal imagery.

Bollinger, J; Alfred Garrett, A; Larry Koffman, L; David Hayes, D

2006-08-24T23:59:59.000Z

64

A NONLINEAR MODELING FRAMEWORK FOR AUTONOMOUS CRUISE CONTROL Gabor Orosz  

E-Print Network (OSTI)

of the powertrain specifications (internal combustion engine, hybrid-electric vehi- cles, electric vehicles, etc- creases the efficiency, further improvement are possible by ex- ploiting advanced vehicle technologies A nonlinear modeling framework is presented for au- tonomous cruise control (ACC) equipped vehicles which

Daly, Samantha

65

Design, fabrication and mechanical optimization of multi-scale anisotropic feet for terrestrial locomotion  

E-Print Network (OSTI)

Multi-scale surface interaction methods have been studied to achieve optimal locomotion over surface features of differing length scales. It has been shown that anisotropy is a convenient way of transferring an undirected ...

Morin, Jeffrey W. (Jeffrey William)

2011-01-01T23:59:59.000Z

66

A novel multi-scale intensity metric for evaluation of tropical cyclone intensity forecasts  

Science Conference Proceedings (OSTI)

In this study, a new Multi-Scale Intensity (MSI) metric for evaluating Tropical Cyclone (TC) intensity forecasts is presented. The metric consists of the resolvable and observable, low wavenumber intensity represented by the sum of amplitudes of ...

Tomislava Vukicevic; Eric Uhlhorn; Paul Reasor; Bradley Klotz

67

Developing a Modeling Framework for Assessing Population Impacts of  

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

Developing a Modeling Framework for Assessing Population Impacts of Developing a Modeling Framework for Assessing Population Impacts of Residential Air Quality Policies Speaker(s): Jennifer Logue Date: November 13, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Brett Singer People spend the majority of their time in residences and the health burden of indoor air is significant. However, the definitions of "acceptable" and "good" indoor air quality (IAQ), and the most effective, energy efficient methods for achieving various levels of IAQ are still matters of research and debate. Current ventilation standards focus on minimum requirements for overall and mechanically provided ventilation rates, and vented combustion equipment, and require only the installation of kitchen and bath exhaust fans for source control. These standards generally are

68

An Integrated Multi-scale Framework for Assessing Demand-Side Resources  

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

Nexus of Nexus of Systems Reliability, Energy Costs, the Environment during High Energy Demand Days K. Max Zhang Sibley School of Mechanical and Aerospace Engineering Acknowledgement * Joe Eto and Pete Capper at LBNL * Dick Schuler at Cornell * Mike Swider, Peter Carney and Wes Hall at NYISO * Ari Kahn and Jamil Kahn, NYC Mayor's Office * Michael Harrington, ConED Outline * Context: A "peak" problem * Research statement * Methodology * Synergy - DOE's research needs - NYC's resiliency planning High Electric Demand Days (HEDD): A "Peak" Problem * Hot summer days and heat waves * Power Systems - Reliability is compromised - Cost of electricity is high: expensive peaking generators * Environment - High ozone air pollution - Double threats to public health: heat and air pollution

69

A framework for the calibration of social simulation models  

E-Print Network (OSTI)

Simulation with agent-based models is increasingly used in the study of complex socio-technical systems and in social simulation in general. This paradigm offers a number of attractive features, namely the possibility of modeling emergent phenomena within large populations. As a consequence, often the quantity in need of calibration may be a distribution over the population whose relation with the parameters of the model is analytically intractable. Nevertheless, we can simulate. In this paper we present a simulation-based framework for the calibration of agent-based models with distributional output based on indirect inference. We illustrate our method step by step on a model of norm emergence in an online community of peer production, using data from three large Wikipedia communities. Model fit and diagnostics are discussed.

Ciampaglia, Giovanni Luca

2013-01-01T23:59:59.000Z

70

Velo: A Knowledge Management Framework for Modeling and Simulation  

Science Conference Proceedings (OSTI)

Modern scientific enterprises are inherently knowledge-intensive. Scientific studies in domains such as geosciences, climate, and biology require the acquisition and manipulation of large amounts of experimental and field data to create inputs for large-scale computational simulations. The results of these simulations are then analyzed, leading to refinements of inputs and models and additional simulations. The results of this process must be managed and archived to provide justifications for regulatory decisions and publications that are based on the models. In this paper we introduce our Velo framework that is designed as a reusable, domain independent knowledge management infrastructure for modeling and simulation. Velo leverages, integrates and extends open source collaborative and content management technologies to create a scalable and flexible core platform that can be tailored to specific scientific domains. We describe the architecture of Velo for managing and associating the various types of data that are used and created in modeling and simulation projects, as well as the framework for integrating domain-specific tools. To demonstrate realizations of Velo, we describe examples from two deployed sites for carbon sequestration and climate modeling. These provide concrete example of the inherent extensibility and utility of our approach.

Gorton, Ian; Sivaramakrishnan, Chandrika; Black, Gary D.; White, Signe K.; Purohit, Sumit; Lansing, Carina S.; Madison, Michael C.; Schuchardt, Karen L.; Liu, Yan

2012-03-01T23:59:59.000Z

71

Checking JML specifications using an extensible software model checking framework  

E-Print Network (OSTI)

Abstract. The use of assertions to express correctness properties of programs is growing in practice. Assertions provide a form of lightweight checkable specification that can be very effective in finding defects in programs and in guiding developers to the cause of a problem. A wide variety of assertion languages and associated validation techniques have been developed, but run-time monitoring is commonly thought to be the only practical solution. In this paper, we describe how specifications written in the Java Modeling Language (JML), a general purpose behavioral specification and assertional language for Java, can be validated using a customized model checker built on top of the Bogor model checking framework. Our experience illustrates the need for customized state-space representations and reduction strategies in model checking frameworks in order to effectively check the kind of strong behavioral specifications that can be written in JML. We discuss the advantages and trade-offs of model checking relative to other specification validation techniques and present data that suggest that

Edwin Rodríguez; Matthew B. Dwyer

2006-01-01T23:59:59.000Z

72

Dynamic Equilibrium Economies: A Framework for Comparing Models and Data  

E-Print Network (OSTI)

: We propose a constructive, multivariate framework for assessing agreement between (generally misspecified) dynamic equilibrium models and data, which enables a complete second-order comparison of the dynamic properties of models and data. We use bootstrap algorithms to evaluate the significance of deviations between models and data, and we use goodness-of-fit criteria to produce estimators that optimize economically-relevant loss functions. We provide a detailed illustrative application to modeling the U.S. cattle cycle. Acknowledgments: The Co-Editor and referees provided helpful and constructive input, as did participants at meetings of the Econometric Society, the CEPR, the NBER, and numerous university seminars. We gratefully acknowledge additional help from Bill Brown, Fabio Canova, Tim Cogley, Bob Lucas, Ellen McGrattan, Danny Quah, Lucrezia Reichlin, Sherwin Rosen, Chris Sims, Tony Smith, Jim Stock, Mark Watson, and especially Lars Hansen, Adrian Pagan, and Tom Sargent. All re...

Lee E. Ohanian; Jeremy Berkowitz; Francis X. Diebold; Francis X. Diebold; Tim Cogley; Bob Lucas; Ellen Mcgrattan; Danny Quah; Lucrezia Reichlin

1998-01-01T23:59:59.000Z

73

Cryptic Faulting and Multi-Scale Geothermal Fluid Connections in the Dixie  

Open Energy Info (EERE)

Cryptic Faulting and Multi-Scale Geothermal Fluid Connections in the Dixie Cryptic Faulting and Multi-Scale Geothermal Fluid Connections in the Dixie Valley-Central Nevada Seismic Belt Area- Implications from Mt Resistivity Surveying Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Cryptic Faulting and Multi-Scale Geothermal Fluid Connections in the Dixie Valley-Central Nevada Seismic Belt Area- Implications from Mt Resistivity Surveying Abstract Extended magnetotelluric (MT) profiling results over the Dixie Valley-Central Nevada Seismic Belt area were recently completed to explore the hypothesis that fluid circulation to depths of 10 km or more is generating well temperatures in the field >280 C.This transect has revealed families of resistivity structures commonly dominated by high-angle

74

An Integrated Modeling Framework for Carbon Capture and Storage Technologies  

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

Karen L. cohen Karen L. cohen Project Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236 412-386-6667 karen.cohen@netl.doe.gov Edward s. Rubin Carnegie Mellon University 5000 Forbes Avenue 128A Baker Hall Pittsburgh, PA 15213 412-268-5897 rubin@cmu.edu An IntegrAted ModelIng FrAMework For CArbon CApture And StorAge teChnologIeS Background The U.S. Department of Energy's (DOE) National Energy Technology Laboratory (NETL) is developing safe, lower-cost methods of carbon dioxide (CO 2 ) capture and storage (CCS) as a potential option for climate change mitigation. In addition to technology development, there is a need for modeling and assessment tools to evaluate and compare the cost and effectiveness of CCS methods. Analytical

75

CIMS: A FRAMEWORK FOR INFRASTRUCTURE INTERDEPENDENCY MODELING AND ANALYSIS  

SciTech Connect

Today’s society relies greatly upon an array of complex national and international infrastructure networks such as transportation, utilities, telecommunication, and even financial networks. While modeling and simulation tools have provided insight into the behavior of individual infrastructure networks, a far less understood area is that of the interrelationships among multiple infrastructure networks including the potential cascading effects that may result due to these interdependencies. This paper first describes infrastructure interdependencies as well as presenting a formalization of interdependency types. Next the paper describes a modeling and simulation framework called CIMS© and the work that is being conducted at the Idaho National Laboratory (INL) to model and simulate infrastructure interdependencies and the complex behaviors that can result.

Donald D. Dudenhoeffer; May R. Permann; Milos Manic

2006-12-01T23:59:59.000Z

76

Crude Oil Price Prediction Based On Multi-scale Decomposition  

Science Conference Proceedings (OSTI)

A synergetic model (DWT-LSSVM) is presented in this paper. First of all, the raw data is decomposed into approximate coefficients and the detail coefficients at different scales by discrete wavelet transforms (DWT). These coefficients obtained by previous ... Keywords: crude oil price, least squares vector machines, wavelet transform

Yejing Bao; Xun Zhang; Lean Yu; Shouyang Wang

2007-05-01T23:59:59.000Z

77

Multi-Scale, Sustainable Reaction Engineering - A New Departmental Initiative  

E-Print Network (OSTI)

but it remains a continuing strength for the Department, underpinned by many new developments Illustration by Current/ Future Research Reactor and Reaction Efficiency Sustainable Energy Generation Transport Biofuels Modelling Reactor and Reaction... from Biomass via Iron Oxide Looping Dennis & Scott (2006). A.I.Ch.E.J., 52, 3325-3328. EPSRC Grant EP/F027435/1. Transport Biofuels Biomass Conversion to Fuel - Issues Options (i) gasification/GTL (ii) hydrolysis/fermentation Need...

Dennis, John

2008-07-29T23:59:59.000Z

78

Resolving Oceanic Shear and Velocity with the Multi-Scale Profiler  

Science Conference Proceedings (OSTI)

The Multi-Scale Profiler (MSP), a freely falling dropsonde, has been used over the past 12 years to measure oceanic shear variance. Complete resolution of oceanic shear spectra is achieved by combining the measurements of MSP’s acoustic current ...

D. P. Winkel; M. C. Gregg; T. B. Sanford

1996-10-01T23:59:59.000Z

79

A Theoretical Framework for Energy and Momentum Consistency in Subgrid-Scale Parameterization for Climate Models  

Science Conference Proceedings (OSTI)

A theoretical framework for the joint conservation of energy and momentum in the parameterization of subgrid-scale processes in climate models is presented. The framework couples a hydrostatic resolved (planetary scale) flow to a nonhydrostatic ...

Tiffany A. Shaw; Theodore G. Shepherd

2009-10-01T23:59:59.000Z

80

A transformation composition framework for model driven engineering  

E-Print Network (OSTI)

Model Driven Engineering is a promising approach where software development processes lead from abstract models to code generation. In order to support these software processes, it is important to provide means that are flexible and that can be tailored to match specific requirements of engineering domains–like health care, telecommunications, or embedded systems. In other word, to build the tool according to the needs and to the domain specificities. This report proposes to reach this goal through the composition of transformations: A software processes is defined as a set of chained transformations that have to be performed on an abstract model defining a system in order to produce the system implementation. In addition to this support for composition, this report advocates the use of transformation components for tooling software processes. We think that this experiments is a first step toward automating the building of software factories or software product lines. This report discusses both a framework for defining and composing model transformations as well as tools for the generation of transformation executable components and their associated execution environment. Following this path, we hope that transformation components could come to the shelves. This would improve the definition of processes as well as the reuse of existing transformations. 1

Raphaël Marvie; Raphaël Marvie

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Formation of Nuclear Disks and Supermassive Black Hole Binaries in Multi-Scale Hydrodynamical Galaxy Mergers  

E-Print Network (OSTI)

(Abridged) We review the results of the first multi-scale, hydrodynamical simulations of mergers between galaxies with central supermassive black holes (SMBHs) to investigate the formation of SMBH binaries in galactic nuclei. We demonstrate that strong gas inflows produce nuclear disks at the centers of merger remnants whose properties depend sensitively on the details of gas thermodynamics. In numerical simulations with parsec-scale spatial resolution in the gas component and an effective equation of state appropriate for a starburst galaxy, we show that a SMBH binary forms very rapidly, less than a million years after the merger of the two galaxies. Binary formation is significantly suppressed in the presence of a strong heating source such as radiative feedback by the accreting SMBHs. We also present preliminary results of numerical simulations with ultra-high spatial resolution of 0.1 pc in the gas component. These simulations resolve the internal structure of the resulting nuclear disk down to parsec scales and demonstrate the formation of a central massive object (~ 10^8 Mo) by efficient angular momentum transport. This is the first time that a radial gas inflow is shown to extend to parsec scales as a result of the dynamics and hydrodynamics involved in a galaxy merger, and has important implications for the fueling of SMBHs. Due to the rapid formation of the central clump, the density of the nuclear disk decreases significantly in its outer region, reducing dramatically the effect of dynamical friction and leading to the stalling of the two SMBHs at a separation of ~1 pc. We discuss how the orbital decay of the black holes might continue in a more realistic model which incorporates star formation and the multi-phase nature of the ISM.

Lucio Mayer; Stelios Kazantzidis; Andres Escala

2008-07-22T23:59:59.000Z

82

Evaluation of the Multiscale Modeling Framework Using Data from the Atmospheric Radiation Measurement Program  

Science Conference Proceedings (OSTI)

In a recently developed approach to climate modeling, called the multiscale modeling framework (MMF), a two-dimensional cloud-resolving model (CRM) is embedded into each grid column of the Community Atmospheric Model (CAM), replacing traditional ...

Mikhail Ovtchinnikov; Thomas Ackerman; Roger Marchand; Marat Khairoutdinov

2006-05-01T23:59:59.000Z

83

AN INTEGRATED MODELING FRAMEWORK FOR CARBON MANAGEMENT TECHNOLOGIES  

Science Conference Proceedings (OSTI)

CO{sub 2} capture and storage (CCS) is gaining widespread interest as a potential method to control greenhouse gas emissions from fossil fuel sources, especially electric power plants. Commercial applications of CO{sub 2} separation and capture technologies are found in a number of industrial process operations worldwide. Many of these capture technologies also are applicable to fossil fuel power plants, although applications to large-scale power generation remain to be demonstrated. This report describes the development of a generalized modeling framework to assess alternative CO{sub 2} capture and storage options in the context of multi-pollutant control requirements for fossil fuel power plants. The focus of the report is on post-combustion CO{sub 2} capture using amine-based absorption systems at pulverized coal-fired plants, which are the most prevalent technology used for power generation today. The modeling framework builds on the previously developed Integrated Environmental Control Model (IECM). The expanded version with carbon sequestration is designated as IECM-cs. The expanded modeling capability also includes natural gas combined cycle (NGCC) power plants and integrated coal gasification combined cycle (IGCC) systems as well as pulverized coal (PC) plants. This report presents details of the performance and cost models developed for an amine-based CO{sub 2} capture system, representing the baseline of current commercial technology. The key uncertainties and variability in process design, performance and cost parameters which influence the overall cost of carbon mitigation also are characterized. The new performance and cost models for CO{sub 2} capture systems have been integrated into the IECM-cs, along with models to estimate CO{sub 2} transport and storage costs. The CO{sub 2} control system also interacts with other emission control technologies such as flue gas desulfurization (FGD) systems for SO{sub 2} control. The integrated model is applied to study the feasibility and cost of carbon capture and sequestration at both new and existing PC plants as well as new NGCC plants. The cost of CO{sub 2} avoidance using amine-based CO{sub 2} capture technology is found to be sensitive to assumptions about the reference plant design and operation, as well as assumptions about the CO{sub 2} capture system design. The case studies also reveal multi-pollutant interactions and potential tradeoffs in the capture of CO{sub 2}, SO{sub 2}, NO{sub 2} and NH{sub 3}. The potential for targeted R&D to reduce the cost of CO{sub 2} capture also is explored using the IECM-cs in conjunction with expert elicitations regarding potential improvements in key performance and cost parameters of amine-based systems. The results indicate that the performance of amine-based CO{sub 2} capture systems can be improved significantly, and the cost of CO{sub 2} capture reduced substantially over the next decade or two, via innovations such as new or improved sorbents with lower regeneration heat requirements, and improvements in power plant heat integration to reduce the (currently large) energy penalty of CO{sub 2} capture. Future work will explore in more detail a broader set of advanced technology options to lower the costs of CO{sub 2} capture and storage. Volume 2 of this report presents a detailed User's Manual for the IECM-cs computer model as a companion to the technical documentation in Volume 1.

Anand B. Rao; Edward S. Rubin; Michael B. Berkenpas

2004-03-01T23:59:59.000Z

84

A framework for modeling payments for ecosystem services with agent-based models, Bayesian belief networks and opinion dynamics models  

Science Conference Proceedings (OSTI)

We present an integrated modeling framework for simulating land-use decision making under the influence of payments for ecosystem services. The model combines agent-based modeling (ABM) with Bayesian belief networks (BBNs) and opinion dynamics models ... Keywords: Agent based modeling, Bayesian network, China, Human-environment interaction, IAMO-LUC, Land use change, Payments for environmental services, Social influence

Zhanli Sun, Daniel MüLler

2013-07-01T23:59:59.000Z

85

Development of kinetic model reduction framework and its application in realistic flow simulation.  

E-Print Network (OSTI)

??The main objective of this research is to develop a kinetic model reduction framework that enables incorporation of detailed chemistry with realistic flow simulation. Comprehensive… (more)

He, Kaiyuan, 1986-

2010-01-01T23:59:59.000Z

86

Design and Implementation of Components in the Earth System Modeling Framework  

Science Conference Proceedings (OSTI)

The Earth System Modeling Framework is a component-based architecture for developing and assembling climate and related models. A virtual machine underlies the component-level constructs in ESMF, providing both a foundation for performance portability ... Keywords: climate modeling, framework, high performance computing

Nancy Collins; Gerhard Theurich; Cecelia Deluca; Max Suarez; Atanas Trayanov; V. Balaji; Peggy Li; Weiyu Yang; Chris Hill; Arlindo Da Silva

2005-08-01T23:59:59.000Z

87

A Logical Framework for Modelling eMAS  

Science Conference Proceedings (OSTI)

We investigate how to explicitly represent organizational structures in epistemic multi-agent systems (eMAS). We introduce a logical framework F suitable for representing organizational structures for epistemic agents, and provide its declarative ...

Pierangelo Dell'Acqua; Luís Moniz Pereira

2003-01-01T23:59:59.000Z

88

Dynamic Surface Interface Exchanges of Mercury: A Review and Compartmentalized Modeling Framework  

Science Conference Proceedings (OSTI)

This paper presents a review of recent natural surface mercury exchange research in the context of a new modeling framework. The literature indicates that the mercury biogeochemical flux is more dynamic than the current models predict, with ...

Jesse O. Bash; Patricia Bresnahan; David R. Miller

2007-10-01T23:59:59.000Z

89

Using a scalable modeling and simulation framework to evaluate the benefits of intelligent transportation systems.  

SciTech Connect

A scalable, distributed modeling and simulation framework has been developed at Argonne National Laboratory to study Intelligent Transportation Systems. The framework can run on a single-processor workstation, or run distributed on a multiprocessor computer or network of workstations. The framework is modular and supports plug-in models, hardware, and live data sources. The initial set of models currently includes road network and traffic flow, probe and smart vehicles, traffic management centers, communications between vehicles and centers, in-vehicle navigation systems, roadway traffic advisories. The modeling and simulation capability has been used to examine proposed ITS concepts. Results are presented from modeling scenarios from the Advanced Driver and Vehicle Advisory Navigation Concept (ADVANCE) experimental program to demonstrate how the framework can be used to evaluate the benefits of ITS and to plan future ITS operational tests and deployment initiatives.

Ewing, T.; Tentner, A.

2000-03-21T23:59:59.000Z

90

Integration of the DAYCENT Biogeochemical Model within a Multi-Model Framework  

DOE Green Energy (OSTI)

Agricultural residues are the largest near term source of cellulosic 13 biomass for bioenergy production, but removing agricultural residues sustainably 14 requires considering the critical roles that residues play in the agronomic system. 15 Determining sustainable removal rates for agricultural residues has received 16 significant attention and integrated modeling strategies have been built to evaluate 17 sustainable removal rates considering soil erosion and organic matter constraints. 18 However the current integrated model does not quantitatively assess soil carbon 19 and long term crop yields impacts of residue removal. Furthermore the current 20 integrated model does not evaluate the greenhouse gas impacts of residue 21 removal, specifically N2O and CO2 gas fluxes from the soil surface. The DAYCENT 22 model simulates several important processes for determining agroecosystem 23 performance. These processes include daily Nitrogen-gas flux, daily carbon dioxide 24 flux from soil respiration, soil organic carbon and nitrogen, net primary productivity, 25 and daily water and nitrate leaching. Each of these processes is an indicator of 26 sustainability when evaluating emerging cellulosic biomass production systems for 27 bioenergy. A potentially vulnerable cellulosic biomass resource is agricultural 28 residues. This paper presents the integration of the DAYCENT model with the 29 existing integration framework modeling tool to investigate additional environment 30 impacts of agricultural residue removal. The integrated model is extended to 31 facilitate two-way coupling between DAYCENT and the existing framework. The 32 extended integrated model is applied to investigate additional environmental 33 impacts from a recent sustainable agricultural residue removal dataset. The 34 integrated model with DAYCENT finds some differences in sustainable removal 35 rates compared to previous results for a case study county in Iowa. The extended 36 integrated model with DAYCENT also predicts that long term yields will decrease.

David Muth

2012-07-01T23:59:59.000Z

91

An Approach for the Representation of Surface Heterogeneity in Land Surface Models. Part I: Theoretical Framework  

Science Conference Proceedings (OSTI)

In this paper, a theoretical framework is described for the representation of surface heterogeneity within complex biophysical surface schemes for use in climate models. The methodology adopts aspects of the mosaic approach and the statistical–...

Filippo Giorgi

1997-08-01T23:59:59.000Z

92

17.1%-Efficient Multi-Scale-Textured Black Silicon Solar Cells without Dielectric Antireflection Coating: Preprint  

DOE Green Energy (OSTI)

In this work we present 17.1%-efficient p-type single crystal Si solar cells with a multi-scale-textured surface and no dielectric antireflection coating. Multi-scale texturing is achieved by a gold-nanoparticle-assisted nanoporous etch after conventional micron scale KOH-based pyramid texturing (pyramid black etching). By incorporating geometric enhancement of antireflection, this multi-scale texturing reduces the nanoporosity depth required to make silicon 'black' compared to nanoporous planar surfaces. As a result, it improves short-wavelength spectral response (blue response), previously one of the major limiting factors in 'black-Si' solar cells. With multi-scale texturing, the spectrum-weighted average reflectance from 350- to 1000-nm wavelength is below 2% with a 100-nm deep nanoporous layer. In comparison, roughly 250-nm deep nanopores are needed to achieve similar reflectance on planar surface. Here, we characterize surface morphology, reflectivity and solar cell performance of the multi-scale textured solar cells.

Toor, F.; Page, M. R.; Branz, H. M.; Yuan, H. C.

2011-07-01T23:59:59.000Z

93

The Community Earth System Model: A Framework for Collaborative Research  

Science Conference Proceedings (OSTI)

The Community Earth System Model (CESM) is a flexible and extensible community tool used to investigate a diverse set of Earth system interactions across multiple time and space scales. This global coupled model significantly extends its predecessor, the ...

James W. Hurrell; M. M. Holland; P. R. Gent; S. Ghan; Jennifer E. Kay; P. J. Kushner; J.-F. Lamarque; W. G. Large; D. Lawrence; K. Lindsay; W. H. Lipscomb; M. C. Long; N. Mahowald; D. R. Marsh; R. B. Neale; P. Rasch; S. Vavrus; M. Vertenstein; D. Bader; W. D. Collins; J. J. Hack; J. Kiehl; S. Marshall

2013-09-01T23:59:59.000Z

94

Assessment of Solution Uncertainties in Single-Column Modeling Frameworks  

Science Conference Proceedings (OSTI)

Single-column models (SCMs) have been extensively promoted in recent years as an effective means to develop and test physical parameterizations targeted for more complex three-dimensional climate models. Although there are some clear advantages ...

James J. Hack; John A. Pedretti

2000-01-01T23:59:59.000Z

95

A General Framework for an “Unmixed Layer” PBL Model  

Science Conference Proceedings (OSTI)

Mixed-layer models are computationally efficient, but they do not realistically represent the structure of the boundary layer under many conditions. Many of the deficiencies of the mixed-layer model can be attributed to the assumed flat profiles. ...

Martin J. Otte; John C. Wyngaard

1996-09-01T23:59:59.000Z

96

Evaluation framework for the design of an engineering model  

Science Conference Proceedings (OSTI)

According to both cybernetics and general system theory, a subject develops and uses an adequate model of a system to widen his/her knowledge about the system. Models are then the interface between a subject and a real-world system to solve ... Keywords: Cybernetics, Evaluation Criteria, Knowledge Evaluation, Model Evaluation

Walid Ben ahmed; Mounib Mekhilef; Bernard Yannou; Michel Bigand

2010-02-01T23:59:59.000Z

97

An integrated modelling framework for regulated river systems  

Science Conference Proceedings (OSTI)

Management of regulated water systems has become increasingly complex due to rapid socio-economic growth and environmental changes in river basins over recent decades. This paper introduces the Source Integrated Modelling System (IMS), and describes ... Keywords: Murray-Darling Basin, Rainfall-runoff modelling, River management and operations, River system modelling, Source IMS

Wendy D. Welsh; Jai Vaze; Dushmanta Dutta; David Rassam; Joel M. Rahman; Ian D. Jolly; Peter Wallbrink; Geoffrey M. Podger; Matthew Bethune; Matthew J. Hardy; Jin Teng; Julien Lerat

2013-01-01T23:59:59.000Z

98

Computational battery dynamics (CBD)--electrochemical/thermal coupled modeling and multi-scale modeling  

E-Print Network (OSTI)

the behavior of advanced batteries used in electric vehicles (EVs) and hybrid electric vehicles (HEVs). # 2002 (hybrid electric vehicles, HEVs) by bat- teries has resulted in enhanced research into various aspects in the development of environmentally friendly vehicles powered either fully (electric vehicles, EVs) or partially

99

A PLA-based privacy-enhancing user modeling framework and its evaluation  

Science Conference Proceedings (OSTI)

Reconciling personalization with privacy has been a continuing interest in user modeling research. This aim has computational, legal and behavioral/attitudinal ramifications. We present a dynamic privacy-enhancing user modeling framework that supports ... Keywords: Compliance, Disclosure behavior, Performance evaluation, Privacy laws, Privacy preferences, Product line architecture, User experiment, User modeling

Yang Wang; Alfred Kobsa

2013-03-01T23:59:59.000Z

100

Modelling Human Error with a Cognitive Theoretical Framework  

E-Print Network (OSTI)

Busse,D.K Johnson,C.W. The Second European Conference on Cognitive Modelling pp 90-97 Nottingham University Press

Busse, D.K Johnson, C.W.

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Mental models of ambient systems: a modular research framework  

Science Conference Proceedings (OSTI)

This paper outlines our current research program in the fields of ambient intelligence and context-aware computing and the tools we are building to accomplish this research program. From a discussion of our conception of mental models in the domain of ... Keywords: ambient intelligence, context awareness, mental models

Felix Schmitt; Jörg Cassens; Martin Christof Kindsmüller; Michael Herczeg

2011-09-01T23:59:59.000Z

102

The Multi-Scale Mass Transfer Processes Controlling Natural Attenuation and Engineered Remediation: An IFC Focused on Hanford’s 300 Area Uranium Plume Quality Assurance Project Plan  

Science Conference Proceedings (OSTI)

The purpose of the project is to conduct research at an Integrated Field-Scale Research Challenge Site in the Hanford Site 300 Area, CERCLA OU 300-FF-5 (Figure 1), to investigate multi-scale mass transfer processes associated with a subsurface uranium plume impacting both the vadose zone and groundwater. The project will investigate a series of science questions posed for research related to the effect of spatial heterogeneities, the importance of scale, coupled interactions between biogeochemical, hydrologic, and mass transfer processes, and measurements/approaches needed to characterize a mass-transfer dominated system. The research will be conducted by evaluating three (3) different hypotheses focused on multi-scale mass transfer processes in the vadose zone and groundwater, their influence on field-scale U(VI) biogeochemistry and transport, and their implications to natural systems and remediation. The project also includes goals to 1) provide relevant materials and field experimental opportunities for other ERSD researchers and 2) generate a lasting, accessible, and high-quality field experimental database that can be used by the scientific community for testing and validation of new conceptual and numerical models of subsurface reactive transport.

Fix, N. J.

2008-01-31T23:59:59.000Z

103

Development of a practical modeling framework for estimating the impact of wind technology on bird populations  

DOE Green Energy (OSTI)

One of the most pressing environmental concerns related to wind project development is the potential for avian fatalities caused by the turbines. The goal of this project is to develop a useful, practical modeling framework for evaluating potential wind power plant impacts that can be generalized to most bird species. This modeling framework could be used to get a preliminary understanding of the likelihood of significant impacts to birds, in a cost-effective way. The authors accomplish this by (1) reviewing the major factors that can influence the persistence of a wild population; (2) briefly reviewing various models that can aid in estimating population status and trend, including methods of evaluating model structure and performance; (3) reviewing survivorship and population projections; and (4) developing a framework for using models to evaluate the potential impacts of wind development on birds.

Morrison, M.L. [California State Univ., Sacramento, CA (United States); Pollock, K.H. [North Carolina State Univ., Raleigh, NC (United States)

1997-11-01T23:59:59.000Z

104

The Community Earth System Model: A Framework for Collaborative Research  

SciTech Connect

The Community Earth System Model (CESM) is a flexible and extensible community tool used to investigate a diverse set of earth system interactions across multiple time and space scales. This global coupled model is a natural evolution from its predecessor, the Community Climate System Model, following the incorporation of new earth system capabilities. These include the ability to simulate biogeochemical cycles, atmospheric chemistry, ice sheets, and a high-top atmosphere. These and other new model capabilities are enabling investigations into a wide range of pressing scientific questions, providing new predictive capabilities and increasing our collective knowledge about the behavior and interactions of the earth system. Simulations with numerous configurations of the CESM have been provided to the Coupled Model Intercomparison Project Phase 5 (CMIP5) and are being analyzed by the broader community of scientists. Additionally, the model source code and associated documentation are freely available to the scientific community to use for earth system studies, making it a true community tool. Here we describe this earth modeling system, its various possible configurations, and illustrate its capabilities with a few science highlights.

Hurrell, Jim; Holland, Marika M.; Gent, Peter R.; Ghan, Steven J.; Kay, Jennifer; Kushner, P.; Lamarque, J.-F.; Large, William G.; Lawrence, David M.; Lindsay, Keith; Lipscomb, William; Long , Matthew; Mahowald, N.; Marsh, D.; Neale, Richard; Rasch, Philip J.; Vavrus, Steven J.; Vertenstein, Mariana; Bader, David C.; Collins, William D.; Hack, James; Kiehl, J. T.; Marshall, Shawn

2013-09-30T23:59:59.000Z

105

Integrated Modeling, Mapping, and Simulation (IMMS) framework for planning exercises.  

SciTech Connect

The Integrated Modeling, Mapping, and Simulation (IMMS) program is designing and prototyping a simulation and collaboration environment for linking together existing and future modeling and simulation tools to enable analysts, emergency planners, and incident managers to more effectively, economically, and rapidly prepare, analyze, train, and respond to real or potential incidents. When complete, the IMMS program will demonstrate an integrated modeling and simulation capability that supports emergency managers and responders with (1) conducting 'what-if' analyses and exercises to address preparedness, analysis, training, operations, and lessons learned, and (2) effectively, economically, and rapidly verifying response tactics, plans and procedures.

Friedman-Hill, Ernest J.; Plantenga, Todd D.

2010-06-01T23:59:59.000Z

106

A knowledge sharing framework for homeland security modeling and simulation  

Science Conference Proceedings (OSTI)

Modeling and simulation (M&S) tools and capabilities can enable understanding of the complex nature of systems in various homeland security domains. A coordinated effort across government, industry, and academia would advance capabilities in this important ...

Sanjay Jain; Charles W. Hutchings; Y. Tina Lee; Charles R. McLean

2010-12-01T23:59:59.000Z

107

CIMS: a framework for infrastructure interdependency modeling and analysis  

Science Conference Proceedings (OSTI)

Today's society relies greatly upon an array of complex national and international infrastructure networks, such as transportation, utilities, telecommunication, and even financial networks. While modeling and simulation tools have provided insight into ...

Donald D. Dudenhoeffer; May R. Permann; Milos Manic

2006-12-01T23:59:59.000Z

108

Towards a comprehensive energy assessment of residential buildings: a multi-scale life cycle energy analysis framework.  

E-Print Network (OSTI)

??Results show that each of the embodied, operational and transport energy requirements represent a significant share of the total energy requirements and associated greenhouse gas… (more)

Stephan, André

2013-01-01T23:59:59.000Z

109

A timeband framework for modelling real-time systems  

Science Conference Proceedings (OSTI)

Complex real-time systems must integrate physical processes with digital control, human operation and organisational structures. New scientific foundations are required for specifying, designing and implementing these systems. One key challenge is to ... Keywords: Cyber physical, Modelling, Real-time systems

Alan Burns; Ian J. Hayes

2010-06-01T23:59:59.000Z

110

Halloween Storm Simulations with the Space Weather Modeling Framework  

E-Print Network (OSTI)

of Michigan, Ann Arbor, MI 48109, USA In late October and early November 2003 a series of some of the most frequency communications, oil pipelines, and electricity have all become facts of life, however they all Modeling (CSEM) at the University of Michigan and its collaborators have recently built a Space Weather

De Zeeuw, Darren L.

111

A general framework for surface modeling using geometric partial differential equations  

Science Conference Proceedings (OSTI)

In this paper, a general framework for surface modeling using geometric partial differential equations (PDEs) is presented. Starting with a general integral functional, we derive an Euler-Lagrange equation and then a geometric evolution equation (also ... Keywords: Geometric PDEs, Surface modeling, Triangular surface mesh

Guoliang Xu; Qin Zhang

2008-03-01T23:59:59.000Z

112

Tidally Forced Internal Wave Mixing in a k–? Model Framework Applied to Fjord Basins  

Science Conference Proceedings (OSTI)

A simple method for including tidally forced internal wave mixing in a two-equation turbulence closure framework, the k–? model, is presented. The purpose is to model the vertical mixing in the basin waters of stagnant sill fjords. An internal ...

Olof Liungman

2000-02-01T23:59:59.000Z

113

A modeling framework for investment planning in interdependent infrastructures in multi-hazard environments.  

Science Conference Proceedings (OSTI)

Currently, much of protection planning is conducted separately for each infrastructure and hazard. Limited funding requires a balance of expenditures between terrorism and natural hazards based on potential impacts. This report documents the results of a Laboratory Directed Research&Development (LDRD) project that created a modeling framework for investment planning in interdependent infrastructures focused on multiple hazards, including terrorism. To develop this framework, three modeling elements were integrated: natural hazards, terrorism, and interdependent infrastructures. For natural hazards, a methodology was created for specifying events consistent with regional hazards. For terrorism, we modeled the terrorist's actions based on assumptions regarding their knowledge, goals, and target identification strategy. For infrastructures, we focused on predicting post-event performance due to specific terrorist attacks and natural hazard events, tempered by appropriate infrastructure investments. We demonstrate the utility of this framework with various examples, including protection of electric power, roadway, and hospital networks.

Brown, Nathanael J. K.; Gearhart, Jared Lee; Jones, Dean A.; Nozick, Linda Karen; Prince, Michael

2013-09-01T23:59:59.000Z

114

A Fuzzy Logic Framework for Integrating Multiple Learned Models  

SciTech Connect

The Artificial Intelligence field of Integrating Multiple Learned Models (IMLM) explores ways to combine results from sets of trained programs. Aroclor Interpretation is an ill-conditioned problem in which trained programs must operate in scenarios outside their training ranges because it is intractable to train them completely. Consequently, they fail in ways related to the scenarios. We developed a general-purpose IMLM solution, the Combiner, and applied it to Aroclor Interpretation. The Combiner's first step, Scenario Identification (M), learns rules from very sparse, synthetic training data consisting of results from a suite of trained programs called Methods. S1 produces fuzzy belief weights for each scenario by approximately matching the rules. The Combiner's second step, Aroclor Presence Detection (AP), classifies each of three Aroclors as present or absent in a sample. The third step, Aroclor Quantification (AQ), produces quantitative values for the concentration of each Aroclor in a sample. AP and AQ use automatically learned empirical biases for each of the Methods in each scenario. Through fuzzy logic, AP and AQ combine scenario weights, automatically learned biases for each of the Methods in each scenario, and Methods' results to determine results for a sample.

Bobi Kai Den Hartog

1999-03-01T23:59:59.000Z

115

Properties of shocked polymers : Mbar experiments on Z and multi-scale simulations.  

DOE Green Energy (OSTI)

Significant progress has been made over the last few years in understanding properties of matter subject to strong shocks and other extreme conditions. High-accuracy multi-Mbar experiments and first-principles theoretical studies together provide detailed insights into the physics and chemistry of high energy-density matter. While comprehensive advances have been made for pure elements like deuterium, helium, and carbon, progress has been slower for equally important, albeit more challenging, materials like molecular crystals, polymers, and foams. Hydrocarbon based polymer foams are common materials and in particular they are used in designing shock- and inertial confinement fusion experiments. Depending on their initial density, foams shock to relatively higher pressure and temperature compared to shocked dense polymers/plastics. As foams and polymers are shocked, they exhibit both structural and chemical transitions. We will present experimental and theoretical results for shocked polymers in the Mbar regime. By shock impact of magnetically launched flyer plates on poly(4-methyl-1-pentene) foams, we create multi-Mbar pressures in a dense plasma mixture of hydrogen, carbon, at temperatures of several eV. Concurrently with executing experiments, we analyze the system by multi-scale simulations, from density functional theory to continuum magneto-hydrodynamics simulations. In particular, density functional theory (DFT) molecular dynamics (MD) and classical MD simulations of the principal shock Hugoniot will be presented in detail for two hydrocarbon polymers: polyethylene (PE) and poly(4-methyl-1-pentene) (PMP).

Mattsson, Thomas Kjell Rene

2010-03-01T23:59:59.000Z

116

Multiscale Modeling of Microstructure Deformation in Material ...  

Science Conference Proceedings (OSTI)

... a multi scale modelling approach combined with conventional material models ... Optimization of Thermal Cycle for Rails with Respect to the Wear Resistance.

117

Function Test Framework for Testing IO-Blocks in a Model-Based Rapid Prototyping Development  

E-Print Network (OSTI)

Function Test Framework for Testing IO-Blocks in a Model-Based Rapid Prototyping Development -- Testing and verification are important methods for gaining confidence in the reliability of a software changing development cycles or that is tar- geted at many platforms. In this paper we present a test

118

Stochastic modeling of evaporating sprays within a consistent hybrid joint PDF framework  

Science Conference Proceedings (OSTI)

In the present study, a framework for modeling two-phase evaporating flow is presented, which employs an Eulerian-Lagrangian-Lagrangian approach. For the continuous phase, a joint velocity-composition probability density function (PDF) method is used. ... Keywords: Evaporation, Hybrid algorithm, Multi-phase flow, PDF method, Particle local time-stepping, Spray, Stochastic method, Time-averaging, Turbulent flow

Gaurav Anand; Patrick Jenny

2009-04-01T23:59:59.000Z

119

Modelling of the Uncertainty of Nuclear Fuel Thermal Behaviour Using the URANIE Framework  

Science Conference Proceedings (OSTI)

In the global framework of nuclear fuel behaviour simulation, the response of the models describing the physical phenomena occurring during the irradiation in reactor is mainly conditioned by the confidence in the calculated temperature of the fuel. ... Keywords: uncertainty, thermal behaviour, nuclear fuel, URANIE

Antoine Boulore; Christine Struzik; Fabrice Gaudier

2009-09-01T23:59:59.000Z

120

Implementing and Applying the Stocks-Carrington Framework for Model-Based Testing  

Science Conference Proceedings (OSTI)

In this paper we describe the functional features and the architecture of a tool implementing the Stocks-Carrington framework (TTF) for model based testing (MBT). The resulting prototype, called Fastest, makes it easy to generate test cases from Z specifications. ...

Maximiliano Cristiá; Pablo Rodríguez Monetti

2009-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Evaluation of the Simulated Interannual and Subseasonal Variability in an AMIP-Style Simulation Using the CSU Multiscale Modeling Framework  

Science Conference Proceedings (OSTI)

The Colorado State University (CSU) Multiscale Modeling Framework (MMF) is a new type of general circulation model (GCM) that replaces the conventional parameterizations of convection, clouds, and boundary layer with a cloud-resolving model (CRM) ...

Marat Khairoutdinov; Charlotte DeMott; David Randall

2008-02-01T23:59:59.000Z

122

Modelling and simulation of acrylic bone cement injection and curing within the framework of vertebroplasty  

E-Print Network (OSTI)

The minimal invasive procedure of vertebroplasty is a surgical technique to treat compression fractures of vertebral bodies. During the treatment liquid bone cement gets injected into the affected vertebral body and therein cures to a solid. In order to investigate the treatment and the impact of injected bone cement on the vertebra, an integrated modelling and simulation framework has been developed. The framework includes (i) the generation of computer models based on microCT images of human cancellous bone, (ii) CFD simulations of bone cement injection into the trabecular structure of a vertebral body as well as (iii) non-linear FEM simulations of the bone cement curing. Thereby, microstructural models of trabecular bone structures are employed. Furthermore, a detailed description of the material behaviour of acrylic bone cements is provided. More precisely, a non-linear fluid flow model is chosen for the representation of the bone cement behaviour during injection and a non-linear viscoelastic material mo...

Landgraf, Ralf; Kolmeder, Sebastian; Lion, Alexander; Lebsack, Helena; Kober, Cornelia

2013-01-01T23:59:59.000Z

123

Multi-Scale Modeling of Fission Gas Evolution in UO2  

Science Conference Proceedings (OSTI)

Fission gases in uranium dioxide (UO2) nuclear fuels, of which Xe is one of the most prominent, influence fuel performance during reactor operation and have ...

124

Simulated diurnal rainfall physics in a multi-scale global climate model with embedded explicit convection  

E-Print Network (OSTI)

layer destabilization to local solar heating and evapo-the daily cycle of solar heating excites many atmospherictrop- ics) and surface solar heating cycles are weak (over

Pritchard, Michael Stephen

2011-01-01T23:59:59.000Z

125

Modeling of Multi-Scale Phenomena for Batteries - Programmaster.org  

Science Conference Proceedings (OSTI)

Ph: (865) 241-5145, Fax: (865) 574-4357; e-mail: sabaua@ornl.gov. Abstracts Due, 11/15/2009. Proceedings Plan, Definite: A CD-only volume ...

126

Simulated diurnal rainfall physics in a multi-scale global climate model with embedded explicit convection  

E-Print Network (OSTI)

time of most westerly (offshore) winds is the end of thewind fluctuations over a distance of several hundred kilometers offshore

Pritchard, Michael Stephen

2011-01-01T23:59:59.000Z

127

PII-57: Multi-Scale Modeling of Ni/YSZ Fuel Cell Anode  

Science Conference Proceedings (OSTI)

Electrochemical reactions in a solid oxide fuel cell occur simultaneously as charge .... PII-66: Virtual Prototyping of Lightweight Designs Made with Cold and Hot ...

128

Multi-Scale Models of Crack Propagation and Their Use in ...  

Science Conference Proceedings (OSTI)

The rate of propagation is determined by fracture phenomena coupled over four ... scale, the microstructure of the material determines the resistance to fracture.

129

Simulated diurnal rainfall physics in a multi-scale global climate model with embedded explicit convection  

E-Print Network (OSTI)

waves, compensating subsidence and detrainment aroundunrealistic deep barotropic subsidence wave that otherwisethrough continuity) daytime subsidence over adjacent ocean.

Pritchard, Michael Stephen

2011-01-01T23:59:59.000Z

130

Multi-scale modelling of III-nitrides: from dislocations to the electronic structure  

E-Print Network (OSTI)

in bulk . . . . . . . . . . . . . . . . . . . . . . . 28 2.3.3 Dislocation types near the free surface . . . . . . . . . . . . . . . . 31 2.4 Beyond linear elasticity – energy of the dislocation core . . . . . . . . . . 33 2.5 Summary... emitting blue light (? = 405 nm), more data (up to ? 25 GB) could be written on every single disk due to the shorter wavelength of the writing beam. Other exciting applications include solar cell arrays for satellites and power amplifiers at microwave...

Holec, David

131

Performance measures framework for unmanned systems (PerMFUS): models for contextual metrics  

Science Conference Proceedings (OSTI)

In the development of the Performance Measures Framework for Unmanned Systems (PerMFUS), we have established a multiple-axis performance metrics model for the unmanned systems (UMS). This model characterizes the UMS performance requirements by the missions ... Keywords: ALFUS, HSI, UMS, autonomy, collaboration, communication, contextual autonomy, contextual metrics, energy, environment, goal, human-system interaction, measure, metrics, mission, mobility, perception, performance, power, robot, sensing, task, terminology, test, unmanned system

Hui-Min Huang; Elena Messina; Adam Jacoff; Robert Wade; Michael McNair

2010-09-01T23:59:59.000Z

132

Representing natural and manmade drainage systems in an earth system modeling framework  

SciTech Connect

Drainage systems can be categorized into natural or geomorphological drainage systems, agricultural drainage systems and urban drainage systems. They interact closely among themselves and with climate and human society, particularly under extreme climate and hydrological events such as floods. This editorial articulates the need to holistically understand and model drainage systems in the context of climate change and human influence, and discusses the requirements and examples of feasible approaches to representing natural and manmade drainage systems in an earth system modeling framework.

Li, Hongyi; Wu, Huan; Huang, Maoyi; Leung, Lai-Yung R.

2012-08-27T23:59:59.000Z

133

Uncertainty Analysis Framework - Hanford Site-Wide Groundwater Flow and Transport Model  

Science Conference Proceedings (OSTI)

Pacific Northwest National Laboratory (PNNL) embarked on a new initiative to strengthen the technical defensibility of the predictions being made with a site-wide groundwater flow and transport model at the U.S. Department of Energy Hanford Site in southeastern Washington State. In FY 2000, the focus of the initiative was on the characterization of major uncertainties in the current conceptual model that would affect model predictions. The long-term goals of the initiative are the development and implementation of an uncertainty estimation methodology in future assessments and analyses using the site-wide model. This report focuses on the development and implementation of an uncertainty analysis framework.

Cole, Charles R.; Bergeron, Marcel P.; Murray, Christopher J.; Thorne, Paul D.; Wurstner, Signe K.; Rogers, Phillip M.

2001-11-09T23:59:59.000Z

134

Effects of land markets and land management on ecosystem function: A framework for modelling exurban land-change  

Science Conference Proceedings (OSTI)

This paper presents the conceptual design and application of a new land-change modelling framework that represents geographical, sociological, economic, and ecological aspects of a land system. The framework provides an overarching design that can be ... Keywords: Agent-based modelling, Carbon storage and flux, Exurban development, Land-use and land-cover change, Policy

Derek T. Robinson, Shipeng Sun, Meghan Hutchins, Rick L. Riolo, Daniel G. Brown, Dawn C. Parker, Tatiana Filatova, William S. Currie, Sarah Kiger

2013-07-01T23:59:59.000Z

135

Collaborative e-business process modelling: a holistic analysis framework focused on small and medium-sized enterprises  

Science Conference Proceedings (OSTI)

In this work, we propose a holistic analysis framework for collaborative e-Business process modelling approaches that takes into account the specific challenges small and medium-sized enterprises (SME) are facing with regard to modelling inter-organizational ... Keywords: analysis framework, business process management, collaborative business process, e-business, service-oriented architecture, sme

Volker Hoyer; Oliver Christ

2007-04-01T23:59:59.000Z

136

A second gradient theoretical framework for hierarchical multiscale modeling of materials  

SciTech Connect

A theoretical framework for the hierarchical multiscale modeling of inelastic response of heterogeneous materials has been presented. Within this multiscale framework, the second gradient is used as a non local kinematic link between the response of a material point at the coarse scale and the response of a neighborhood of material points at the fine scale. Kinematic consistency between these scales results in specific requirements for constraints on the fluctuation field. The wryness tensor serves as a second-order measure of strain. The nature of the second-order strain induces anti-symmetry in the first order stress at the coarse scale. The multiscale ISV constitutive theory is couched in the coarse scale intermediate configuration, from which an important new concept in scale transitions emerges, namely scale invariance of dissipation. Finally, a strategy for developing meaningful kinematic ISVs and the proper free energy functions and evolution kinetics is presented.

Luscher, Darby J [Los Alamos National Laboratory; Bronkhorst, Curt A [Los Alamos National Laboratory; Mc Dowell, David L [GEORGIA TECH

2009-01-01T23:59:59.000Z

137

Natural Tracers and Multi-Scale Assessment of Caprock Sealing Behavior: A Case Study of the Kirtland Formation, San Juan Basin  

Science Conference Proceedings (OSTI)

The assessment of caprocks for geologic CO{sub 2} storage is a multi-scale endeavor. Investigation of a regional caprock - the Kirtland Formation, San Juan Basin, USA - at the pore-network scale indicates high capillary sealing capacity and low permeabilities. Core and wellscale data, however, indicate a potential seal bypass system as evidenced by multiple mineralized fractures and methane gas saturations within the caprock. Our interpretation of {sup 4}He concentrations, measured at the top and bottom of the caprock, suggests low fluid fluxes through the caprock: (1) Of the total {sup 4}He produced in situ (i.e., at the locations of sampling) by uranium and thorium decay since deposition of the Kirtland Formation, a large portion still resides in the pore fluids. (2) Simple advection-only and advection-diffusion models, using the measured {sup 4}He concentrations, indicate low permeability ({approx}10-20 m{sup 2} or lower) for the thickness of the Kirtland Formation. These findings, however, do not guarantee the lack of a large-scale bypass system. The measured data, located near the boundary conditions of the models (i.e., the overlying and underlying aquifers), limit our testing of conceptual models and the sensitivity of model parameterization. Thus, we suggest approaches for future studies to better assess the presence or lack of a seal bypass system at this particular site and for other sites in general.

Jason Heath; Brian McPherson; Thomas Dewers

2011-03-15T23:59:59.000Z

138

A Mathematical Framework for Agent Based Models of Complex Biological Networks  

E-Print Network (OSTI)

Agent-based modeling and simulation is a useful method to study biological phenomena in a wide range of fields, from molecular biology to ecology. Since there is currently no agreed-upon standard way to specify such models it is not always easy to use published models. Also, since model descriptions are not usually given in mathematical terms, it is difficult to bring mathematical analysis tools to bear, so that models are typically studied through simulation. In order to address this issue, Grimm et al. proposed a protocol for model specification, the so-called ODD protocol, which provides a standard way to describe models. This paper proposes an addition to the ODD protocol which allows the description of an agent-based model as a dynamical system, which provides access to computational and theoretical tools for its analysis. The mathematical framework is that of algebraic models, that is, time-discrete dynamical systems with algebraic structure. It is shown by way of several examples how this mathematical ...

Hinkelmann, Franziska; Jarrah, Abdul Salam; Laubenbacher, Reinhard

2010-01-01T23:59:59.000Z

139

Stochastic modeling of evaporating sprays within a consistent hybrid joint PDF framework  

SciTech Connect

In the present study, a framework for modeling two-phase evaporating flow is presented, which employs an Eulerian-Lagrangian-Lagrangian approach. For the continuous phase, a joint velocity-composition probability density function (PDF) method is used. Opposed to other approaches, such PDF methods require no modeling for turbulent convection and chemical source terms. For the dispersed phase, the PDF of velocity, diameter, temperature, seen gas velocity and seen gas composition is calculated. This provides a unified formulation, which allows to consistently address the different modeling issues associated with such a system. Because of the high dimensionality, particle methods are employed to solve the PDF transport equations. To further enhance computational efficiency, a local particle time-stepping algorithm is implemented and a particle time-averaging technique is employed to reduce statistical and bias errors. In comparison to previous studies, a significantly smaller number of droplet particles per grid cell can be employed for the computations, which rely on two-way coupling between the droplet and gas phases. The framework was validated using established experimental data and a good overall agreement can be observed.

Anand, Gaurav [Institute of Fluid Dynamics, Sonneggstrasse 3, ETH Zurich, Zuerich CH-8092 (Switzerland)], E-mail: anand@ifd.mavt.ethz.ch; Jenny, Patrick [Institute of Fluid Dynamics, Sonneggstrasse 3, ETH Zurich, Zuerich CH-8092 (Switzerland)], E-mail: jenny@ifd.mavt.ethz.ch

2009-04-01T23:59:59.000Z

140

Multi-scale Detection of Organic and Inorganic Signatures Provides Insights into Gas Shale Properties and Evolution  

Science Conference Proceedings (OSTI)

Organic geochemical analyses, including solvent extraction or pyrolysis, followed by gas chromatography and mass spectrometry, are generally conducted on bulk gas shale samples to evaluate their source and reservoir properties. While organic petrology has been directed at unravelling the matrix composition and textures of these economically important unconventional resources, their spatial variability in chemistry and structure is still poorly documented at the sub-micrometre scale. Here, a combination of techniques including transmission electron microscopy and a synchrotron-based microscopy tool, scanning transmission X-ray microscopy, have been used to characterize at a multiple length scale an overmature organic-rich calcareous mudstone from northern Germany. We document multi-scale chemical and mineralogical heterogeneities within the sample, from the millimetre down to the nanometre-scale. From the detection of different types of bitumen and authigenic minerals associated with the organic matter, we show that the multi-scale approach used in this study may provide new insights into gaseous hydrocarbon generation/retention processes occurring within gas shales and may shed new light on their thermal history.

Bernard, S.; Horsfield, B; Schultz, H; Schreiber, A; Wirth, R; Thi AnhVu, T; Perssen, F; Konitzer, S; Volk, H; et. al.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A unified fuzzy model-based framework for modeling and control of complex systems: from flying vehicle control to brain-machine cooperative control  

Science Conference Proceedings (OSTI)

The invited lecture in 2012 IEEE World Congress on Computational Intelligence (WCCI 2012) presents an overview of a unified fuzzy model-based framework for modeling and control of complex systems. A number of practical applications, ranging from flying ...

Kazuo Tanaka

2012-06-01T23:59:59.000Z

142

The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1): an extended and updated framework for modeling biogenic emissions  

E-Print Network (OSTI)

The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1) is a modeling framework for estimating fluxes of biogenic compounds between terrestrial ecosystems and the atmosphere using simple mechanistic ...

Guenther, A. B.

143

Validation of Models and Simulations of Nuclear Fuels  

Science Conference Proceedings (OSTI)

Symposium, Characterization of Nuclear Reactor Materials and Components with ... Multi-scale theoretical models and computer simulations are often used to ...

144

Casimir force for absorbing media in an open quantum system framework: Scalar model  

SciTech Connect

In this article we compute the Casimir force between two finite-width mirrors at finite temperature, working in a simplified model in 1+1 dimensions. The mirrors, considered as dissipative media, are modeled by a continuous set of harmonic oscillators which in turn are coupled to an external environment at thermal equilibrium. The calculation of the Casimir force is performed in the framework of the theory of open quantum systems. It is shown that the Casimir interaction has two different contributions: the usual radiation pressure from the vacuum, which is obtained for ideal mirrors without dissipation or losses, and a Langevin force associated with the noise induced by the interaction between dielectric atoms in the slabs and the thermal bath. Both contributions to the Casimir force are needed in order to reproduce the analogous Lifshitz formula in 1+1 dimensions. We also discuss the relationship between the electromagnetic properties of the mirrors and the spectral density of the environment.

Lombardo, Fernando C.; Rubio Lopez, Adrian E. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA and IFIBA CONICET, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Mazzitelli, Francisco D. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA and IFIBA CONICET, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Centro Atomico Bariloche Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina)

2011-11-15T23:59:59.000Z

145

Information Theoric Framework for the Earthquake Recurrence Models : Methodica Firma Per Terra Non-Firma  

SciTech Connect

This paper first evaluates the earthquake prediction method (1999 ) used by US Geological Survey as the lead example and reviews also the recent models. Secondly, points out the ongoing debate on the predictability of earthquake recurrences and lists the main claims of both sides. The traditional methods and the 'frequentist' approach used in determining the earthquake probabilities cannot end the complaints that the earthquakes are unpredictable. It is argued that the prevailing 'crisis' in seismic research corresponds to the Pre-Maxent Age of the current situation. The period of Kuhnian 'Crisis' should give rise to a new paradigm based on the Information-Theoric framework including the inverse problem, Maxent and Bayesian methods. Paper aims to show that the information- theoric methods shall provide the required 'Methodica Firma' for the earthquake prediction models.

Esmer, Oezcan [Middle East Technical University, Department of City and Regional Planning, Ankara (Turkey)

2006-11-29T23:59:59.000Z

146

Wetland model in an earth systems modeling framework for regional environmental policy analysis  

E-Print Network (OSTI)

The objective of this research is to investigate incorporating a wetland component into a land energy and water fluxes model, the Community Land Model (CLM). CLM is the land fluxes component of the Integrated Global Systems ...

Awadalla, Sirein Salah

2011-01-01T23:59:59.000Z

147

Access Framework: Model Text (November 2011): An Act to Establish a Framework for Development of Offshore Wind Power  

SciTech Connect

The model offshore wind power legislation focused on two aspects: compensation for use of ocean space and environmental assessment. In particular, the model legislation recommends the adoption of a rent and royalty scheme that is premised on high rent and low royalties in order to stimulate qualified bids from developers who are motivated to begin production as early as possible and to discourage sham bidding. The model legislation also includes a provision that sets royalties at a lower rate in the early years of project operation, and that provides states with the discretion to waive or defer rent and/or royalties for a period of time to meet the goals and objectives of energy independence, job creation, reduced emissions of conventional pollutants and greenhouse gases and increased state requirements for electricity from renewable sources. The environmental impact assessment (EIA) is structured to provide a systematic and interdisciplinary evaluation of the potential positive and negative life-cycle effects of a proposed offshore wind project on the physical, biological, cultural and socio-economic attributes of the project.

Jeremy Firestone; Dawn Kurtz Crompton

2011-10-22T23:59:59.000Z

148

Tracking and Analysis Framework (TAF) model documentation and user`s guide  

SciTech Connect

With passage of the 1990 Clean Air Act Amendments, the United States embarked on a policy for controlling acid deposition that has been estimated to cost at least $2 billion. Title IV of the Act created a major innovation in environmental regulation by introducing market-based incentives - specifically, by allowing electric utility companies to trade allowances to emit sulfur dioxide (SO{sub 2}). The National Acid Precipitation Assessment Program (NAPAP) has been tasked by Congress to assess what Senator Moynihan has termed this {open_quotes}grand experiment.{close_quotes} Such a comprehensive assessment of the economic and environmental effects of this legislation has been a major challenge. To help NAPAP face this challenge, the U.S. Department of Energy (DOE) has sponsored development of an integrated assessment model, known as the Tracking and Analysis Framework (TAF). This section summarizes TAF`s objectives and its overall design.

Bloyd, C.; Camp, J.; Conzelmann, G. [and others

1996-12-01T23:59:59.000Z

149

Explaining B2C e-commerce acceptance: An integrative model based on the framework by Gatignon and Robertson  

Science Conference Proceedings (OSTI)

This study attempts to analyze e-commerce adoption, proposing a global model that integrates the most relevant approaches in the literature. Gatignon and Robertson's Adoption Model is taken as a reference framework because of its overall nature and its ... Keywords: Adoption intention, Attitude, E-commerce, Perceived risk, Personal innovativeness, Subjective norm

Ángel Herrero Crespo; Ignacio A. Rodríguez Del Bosque Rodríguez

2008-03-01T23:59:59.000Z

150

Modeling Hot Mix Asphalt Compaction Using a Thermodynamics Based Compressible Viscoelastic Model within the Framework of Multiple Natural Configurations  

E-Print Network (OSTI)

Hot mix asphalt (HMA) is a composite material that exhibits a nonlinear response that is dependent on temperature, type of loading and strain level. The properties of HMA are highly influenced by the type and amount of the constituents used and also depend on its internal structure. In such a material the variable effects of the compaction process assume a central importance in determining material performance. It is generally accepted that the theoretical knowledge about material behavior during compaction is limited and it is therefore hard to predict and manage (the effect of) a compaction process. This work makes an attempt to address such a specific need by developing a continuum model that can be adapted for simulating the compaction of hot mix asphalt (HMA) using the notion of multiple natural configurations. A thermodynamic framework is employed to study the non-linear dissipative response associated with HMA by specifying the forms for the stored energy and the rate of dissipation function for the material; a viscoelastic compressible fluid model is developed using this framework to model the compaction of hot mix asphalt. It is further anticipated that the present work will aid in the development of better constitutive models capable of capturing the mechanics of processes like compaction both in the laboratory and in the field. The continuum model developed was implemented in the finite element method, which was employed to setup a simulation environment for hot mix asphalt compaction. The finite element method was used for simulating compaction in the laboratory and in various field compaction projects.

Koneru, Saradhi

2010-08-01T23:59:59.000Z

151

A Detailed Microphysical Model Within a Two-Dimensional Dynamic Framework: Model Description and Preliminary Results  

Science Conference Proceedings (OSTI)

A two-dimensional anelastic cloud model which incorporates detailed treatments of the water and ice phase is presented. The liquid phase processes considered include condensation, quasi-stochastic coalescence, fallout and breakup, while the ice ...

William D. Hall

1980-11-01T23:59:59.000Z

152

A geometric modelling framework for conceptual structural design from early digital architectural models  

Science Conference Proceedings (OSTI)

Computer support for conceptual structural design is still ineffective. This is due, in part, to the fact that current computer applications do not recognize that structural design and architectural design are highly interdependent processes, particularly ... Keywords: Architectural design, Conceptual structural design, Geometric modeling, Integrated design

Rodrigo Mora; Claude Bédard; Hugues Rivard

2008-04-01T23:59:59.000Z

153

Travel determinants and multi-scale transferability of national activity patterns to local populations  

Science Conference Proceedings (OSTI)

The ability to transfer national travel patterns to a local population is of interest when attempting to model megaregions or areas that exceed metropolitan planning organization (MPO) boundaries. At the core of this research are questions about the connection between travel behavior and land use, urban form, and accessibility. As a part of this process, a group of land use variables have been identified to define activity and travel patterns for individuals and households. The 2001 National Household Travel Survey (NHTS) participants are divided into categories comprised of a set of latent cluster models representing persons, travel, and land use. These are compared to two sets of cluster models constructed for two local travel surveys. Comparison of means statistical tests are used to assess differences among sociodemographic groups residing in localities with similar land uses. The results show that the NHTS and the local surveys share mean population activity and travel characteristics. However, these similarities mask behavioral heterogeneity that are shown when distributions of activity and travel behavior are examined. Therefore, data from a national household travel survey cannot be used to model local population travel characteristics if the goal to model the actual distributions and not mean travel behavior characteristics.

Henson, Kriste M [Los Alamos National Laboratory; Gou; ias, Konstadinos G [UCSB

2010-11-30T23:59:59.000Z

154

Towards A Novel Unified Framework for Developing Formal, Network and Validated Agent-Based Simulation Models of Complex Adaptive Systems  

E-Print Network (OSTI)

Literature on the modeling and simulation of complex adaptive systems (cas) has primarily advanced vertically in different scientific domains with scientists developing a variety of domain-specific approaches and applications. However, while cas researchers are inherently interested in an interdisciplinary comparison of models, to the best of our knowledge, there is currently no single unified framework for facilitating the development, comparison, communication and validation of models across different scientific domains. In this thesis, we propose first steps towards such a unified framework using a combination of agent-based and complex network-based modeling approaches and guidelines formulated in the form of a set of four levels of usage, which allow multidisciplinary researchers to adopt a suitable framework level on the basis of available data types, their research study objectives and expected outcomes, thus allowing them to better plan and conduct their respective research case studies. Firstly, the complex network modeling level of the proposed framework entails the development of appropriate complex network models for the case where interaction data of cas components is available, with the aim of detecting emergent patterns in the cas under

Muaz Ahmed; Khan Niazi

2011-01-01T23:59:59.000Z

155

NOCH: A framework for biologically plausible models of neural motor control.  

E-Print Network (OSTI)

??This thesis examines the neurobiological components of the motor control system and relates it to current control theory in order to develop a novel framework… (more)

DeWolf, Travis

2010-01-01T23:59:59.000Z

156

An Integrative Modeling Framework to Evaluate the Productivity and Sustainability of Biofuel Crop Production Systems  

Science Conference Proceedings (OSTI)

The potential expansion of biofuel production raises food, energy, and environmental challenges that require careful assessment of the impact of biofuel production on greenhouse gas (GHG) emissions, soil erosion, nutrient loading, and water quality. In this study, we describe a spatially-explicit integrative modeling framework (SEIMF) to understand and quantify the environmental impacts of different biomass cropping systems. This SEIMF consists of three major components: 1) a geographic information system (GIS)-based data analysis system to define spatial modeling units with resolution of 56 m to address spatial variability, 2) the biophysical and biogeochemical model EPIC (Environmental Policy Integrated Climate) applied in a spatially-explicit way to predict biomass yield, GHG emissions, and other environmental impacts of different biofuel crops production systems, and 3) an evolutionary multi-objective optimization algorithm for exploring the trade-offs between biofuel energy production and unintended ecosystem-service responses. Simple examples illustrate the major functions of the SEIMF when applied to a 9-county Regional Intensive Modeling Area (RIMA) in SW Michigan to 1) simulate biofuel crop production, 2) compare impacts of management practices and local ecosystem settings, and 3) optimize the spatial configuration of different biofuel production systems by balancing energy production and other ecosystem-service variables. Potential applications of the SEIMF to support life cycle analysis and provide information on biodiversity evaluation and marginal-land identification are also discussed. The SEIMF developed in this study is expected to provide a useful tool for scientists and decision makers to understand sustainability issues associated with the production of biofuels at local, regional, and national scales.

Zhang, Xuesong; Izaurralde, Roberto C.; Manowitz, David H.; West, T. O.; Post, W. M.; Thomson, Allison M.; Bandaru, V. P.; Nichols, J.; Williams, J.R.

2010-09-08T23:59:59.000Z

157

An integrative modeling framework to evaluate the productivity and sustainability of biofuel crop production systems  

Science Conference Proceedings (OSTI)

The potential expansion of biofuel production raises food, energy, and environmental challenges that require careful assessment of the impact of biofuel production on greenhouse gas (GHG) emissions, soil erosion, nutrient loading, and water quality. In this study, we describe a spatially explicit integrative modeling framework (SEIMF) to understand and quantify the environmental impacts of different biomass cropping systems. This SEIMF consists of three major components: (1) a geographic information system (GIS)-based data analysis system to define spatial modeling units with resolution of 56 m to address spatial variability, (2) the biophysical and biogeochemical model Environmental Policy Integrated Climate (EPIC) applied in a spatially-explicit way to predict biomass yield, GHG emissions, and other environmental impacts of different biofuel crops production systems, and (3) an evolutionary multiobjective optimization algorithm for exploring the trade-offs between biofuel energy production and unintended ecosystem-service responses. Simple examples illustrate the major functions of the SEIMF when applied to a nine-county Regional Intensive Modeling Area (RIMA) in SW Michigan to (1) simulate biofuel crop production, (2) compare impacts of management practices and local ecosystem settings, and (3) optimize the spatial configuration of different biofuel production systems by balancing energy production and other ecosystem-service variables. Potential applications of the SEIMF to support life cycle analysis and provide information on biodiversity evaluation and marginal-land identification are also discussed. The SEIMF developed in this study is expected to provide a useful tool for scientists and decision makers to understand sustainability issues associated with the production of biofuels at local, regional, and national scales.

Zhang, X [University of Maryland; Izaurralde, R. C. [University of Maryland; Manowitz, D. [University of Maryland; West, T. O. [University of Maryland; Thomson, A. M. [University of Maryland; Post, Wilfred M [ORNL; Bandaru, Vara Prasad [ORNL; Nichols, Jeff [ORNL; Williams, J. [AgriLIFE, Temple, TX

2010-10-01T23:59:59.000Z

158

Adaptive fully implicit multi-scale finite-volume method for multi-phase flow and transport in heterogeneous porous media  

Science Conference Proceedings (OSTI)

We describe a sequential fully implicit (SFI) multi-scale finite volume (MSFV) algorithm for nonlinear multi-phase flow and transport in heterogeneous porous media. The method extends the recently developed multiscale approach, which is based on an IMPES ... Keywords: coupled flow and transport, finite-volume, heterogeneous porous media, immiscible multi-phase flow, multiscale methods, numerical simulation

P. Jenny; S. H. Lee; H. A. Tchelepi

2006-09-01T23:59:59.000Z

159

An integrated modelling framework for simulating regional-scale actor responses to global change in the water domain  

Science Conference Proceedings (OSTI)

Within coupled hydrological simulation systems, taking socio-economic processes into account is still a challenging task. In particular, systems that aim at evaluating impacts of climatic change on large spatial and temporal scales cannot be based on ... Keywords: Actors, Climate change, Coupled simulation, Domestic water use, Framework technology, Integrated water resources management, Regional scale model, Social simulation, Water supply

R. Barthel; S. Janisch; N. Schwarz; A. Trifkovic; D. Nickel; C. Schulz; W. Mauser

2008-09-01T23:59:59.000Z

160

A framework for a feedback process to analyze and personalize a document vector space in a feature extraction model  

Science Conference Proceedings (OSTI)

In this paper, we present a framework for a feedback process to implement a highly accurate document retrieval system. In the system, a document vector space is created dynamically to implement retrieval processing. The retrieval accuracy of the system ... Keywords: Feature extraction, Feedback method, Information retrieval, Semantic search, Vector space model

Kosuke Takano; Xing Chen; Keisuke Masuda

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A software framework for fine grain parallelization of cellular models with OpenMP: Application to fire spread  

Science Conference Proceedings (OSTI)

We are dealing here with the parallelization of fire spreading simulations following detailed physical experiments. The proposal presented in this paper has been tested and evaluated in collaboration with physicists to meet their requirements in terms ... Keywords: DEVS, Fire spread physical model, Open MultiProcessing (OpenMP), Software framework, Symmetric multiprocessors (SMP)

Eric Innocenti; Xavier Silvani; Alexandre Muzy; David R. C. Hill

2009-07-01T23:59:59.000Z

162

ADVANCED INTEGRATION OF MULTI-SCALE MECHANICS AND WELDING PROCESS SIMULATION IN WELD INTEGRITY ASSESSMENT  

Science Conference Proceedings (OSTI)

The potential to save trillions of BTU’s in energy usage and billions of dollars in cost on an annual basis based on use of higher strength steel in major oil and gas transmission pipeline construction is a compelling opportunity recognized by both the US Department of Energy (DOE). The use of high-strength steels (X100) is expected to result in energy savings across the spectrum, from manufacturing the pipe to transportation and fabrication, including welding of line pipe. Elementary examples of energy savings include more the 25 trillion BTUs saved annually based on lower energy costs to produce the thinner-walled high-strength steel pipe, with the potential for the US part of the Alaskan pipeline alone saving more than 7 trillion BTU in production and much more in transportation and assembling. Annual production, maintenance and installation of just US domestic transmission pipeline is likely to save 5 to 10 times this amount based on current planned and anticipated expansions of oil and gas lines in North America. Among the most important conclusions from these studies were: • While computational weld models to predict residual stress and distortions are well-established and accurate, related microstructure models need improvement. • Fracture Initiation Transition Temperature (FITT) Master Curve properly predicts surface-cracked pipe brittle-to-ductile initiation temperature. It has value in developing Codes and Standards to better correlate full-scale behavior from either CTOD or Charpy test results with the proper temperature shifts from the FITT master curve method. • For stress-based flaw evaluation criteria, the new circumferentially cracked pipe limit-load solution in the 2007 API 1104 Appendix A approach is overly conservative by a factor of 4/?, which has additional implications. . • For strain-based design of girth weld defects, the hoop stress effect is the most significant parameter impacting CTOD-driving force and can increase the crack-driving force by a factor of 2 depending on strain-hardening, pressure level as a % of SMYS, and flaw size. • From years of experience in circumferential fracture analyses and experimentation, there has not been sufficient integration of work performed for other industries into analogous problems facing the oil and gas pipeline markets. Some very basic concepts and problems solved previously in these fields could have circumvented inconsistencies seen in the stress-based and strain-based analysis efforts. For example, in nuclear utility piping work, more detailed elastic-plastic fracture analyses were always validated in their ability to predict loads and displacements (stresses and strains). The eventual implementation of these methodologies will result in acceleration of the industry adoption of higher-strength line-pipe steels.

Wilkowski, Gery M.; Rudland, David L.; Shim, Do-Jun; Brust, Frederick W.; Babu, Sundarsanam

2008-06-30T23:59:59.000Z

163

Implementation of the Watershed Analysis Risk Management Framework (WARMF) Watershed Model for Nutrient Trading in the Ohio River Ba sin  

Science Conference Proceedings (OSTI)

As part of the Ohio River Water Quality Trading Program, the Scioto, Muskingum, and Allegheny watersheds were analyzed, using the Watershed Analysis Risk Management Framework (WARMF) model, to determine their capacity for nutrient trading. For consistency across the Ohio River Basin, the watershed models were implemented using the hydrological unit code (HUC) 10 delineation available from the United States Geological Survey. Data from the Ohio Environmental Protection Agency, Pennsylvania Department ...

2012-07-20T23:59:59.000Z

164

Case Studies and Organisational Sustainability Modelling Presented by Cloud Computing Business Framework  

Science Conference Proceedings (OSTI)

In this paper, Cloud Computing Business Framework CCBF is proposed to help organisations achieve good Cloud design, deployment, migration, and services. Although organisations adopt Cloud Computing for Web Services, technical and business challenges ...

Gary Wills; Victor Chang; David De Roure; Robert John Walters

2011-07-01T23:59:59.000Z

165

DIALOG: A framework for modeling, analysis and reuse of digital forensic knowledge  

Science Conference Proceedings (OSTI)

This paper presents DIALOG (Digital Investigation Ontology); a framework for the management, reuse, and analysis of Digital Investigation knowledge. DIALOG provides a general, application independent vocabulary that can be used to describe an investigation ... Keywords: Digital, Investigation, Ontology, Registry, Windows

Damir Kahvedi?; Tahar Kechadi

2009-09-01T23:59:59.000Z

166

Roadmap Document for Pacific Northwest National Laboratory Contribution to the Open Modeling Framework  

SciTech Connect

The Cooperative Research Network (CRN) of the National Rural Electric Cooperative Association (NRECA) has identified GridLAB-D as a tool that would provide significant benefit to its member utilities. However, they have also noted that the complexity of the tool would be a significant barrier for adoption. As can often happen in complex simulation environments, as the available capabilities and flexibility increases, the usability of the software decreases except for a few “power” users; this is not unique to GridLAB-D. While GridLAB-D has expanded to a considerable user base, with a few notable exceptions (e.g., American Electric Power) most users are focused on research and development. As a result, NRECA/CRN has proposed an Open Modeling Framework (OMF) designed to make the capabilities of GridLAB-D, and other advanced grid tools, available via a web interface. This will allow utility users to access many of the capabilities of GridLAB-D, with little to no knowledge of the tool itself. Other components will be layered over the simulation engines to provide the user with business support functions, allowing full business case scenarios to be created from the technical data generated within the simulations. Because of the open availability and potential national benefit of the OMF, PNNL has been tasked with supporting NRECA/CRN’s development of the tool, with a focus on incorporating GridLAB-D within the OMF structure and expanding GridLAB-D capabilities to support OMF functions. The GridLAB-D enhancements will be provided first to the OMF developers, but will also be delivered to the wider GridLAB-D community after validation via the community repository. This report is intended to provide a roadmap for the intended enhancements to be delivered by PNNL. Seven tasks were identified in cooperation with NRECA/CRN – each is briefly discussed, including potential outcomes and deadlines.

Fuller, Jason C.; Fisher, Andrew R.; Ciraci, Selim; Hammerstrom, Janelle L.; Hauer, Matthew L.; Schneider, Kevin P.

2013-05-30T23:59:59.000Z

167

Cascaded refactoring for framework  

Science Conference Proceedings (OSTI)

Refactoring of source code has been studied as a preliminary step in the evolution of object-oriented software. We extend the concept of refactoring to the whole range of models used to describe a framework in our methodology: feature model, use case ... Keywords: architecture, design pattern, domain analysis, evolution, feature model, framework, hotspot, refactoring, role, use case

Greg Butler; Lugang Xu

2001-05-01T23:59:59.000Z

168

A modeling and control framework for operating large-scale electric power systems under present and newly evolving competitive industry structures  

E-Print Network (OSTI)

This paper introduces a systematic, structure-based modeling framework for analysis and control of electric power systems for processes evolving over the mid-term and long-term time horizons. Much simpler models than the ...

Ilic, Marija

1995-01-01T23:59:59.000Z

169

A conceptual model and IS framework for the design and adoption of environmental compliance management systems  

Science Conference Proceedings (OSTI)

Environmental concerns have led to a significant increase in the number and scope of compliance imperatives governing electrical, electronics, and IT products across global regulatory environments. This is, of course, in addition to general compliance ... Keywords: Enterprise systems, Environment, Environmental compliance management systems, Governance, IS framework, IT, Risk and compliance

Tom Butler; Damien Mcgovern

2012-04-01T23:59:59.000Z

170

An economic decision framework using modeling for improving aquifer remediation design  

Science Conference Proceedings (OSTI)

Reducing cost is a critical challenge facing environmental remediation today. One of the most effective ways of reducing costs is to improve decision-making. This can range from choosing more cost- effective remediation alternatives (for example, determining whether a groundwater contamination plume should be remediated or not) to improving data collection (for example, determining when data collection should stoop). Uncertainty in site conditions presents a major challenge for effective decision-making. We present a framework for increasing the effectiveness of remedial design decision-making at groundwater contamination sites where there is uncertainty in many parameters that affect remediation design. The objective is to provide an easy-to-use economic framework for making remediation decisions. The presented framework is used to 1) select the best remedial design from a suite of possible ones, 2) estimate if additional data collection is cost-effective, and 3) determine the most important parameters to be sampled. The framework is developed by combining elements from Latin-Hypercube simulation of contaminant transport, economic risk-cost-benefit analysis, and Regional Sensitivity Analysis (RSA).

James, B.R.; Gwo, J.P.; Toran, L.E.

1995-11-01T23:59:59.000Z

171

Position Paper: A general framework for Dynamic Emulation Modelling in environmental problems  

Science Conference Proceedings (OSTI)

Emulation modelling is an effective way of overcoming the large computational burden associated with the process-based models traditionally adopted by the environmental modelling community. An emulator is a low-order, computationally efficient model ... Keywords: Dynamic emulation modelling, Metamodelling, Model complexity, Model reduction, Process-based models, Response surfaces

A. Castelletti; S. Galelli; M. Ratto; R. Soncini-Sessa; P. C. Young

2012-06-01T23:59:59.000Z

172

Numerical modeling of electrochemical-mechanical interactions in lithium polymer batteries  

Science Conference Proceedings (OSTI)

This paper presents a multi-scale finite element approach for lithium batteries to study electrochemical-mechanical interaction phenomena at macro- and micro-scales. The battery model consists of a lithium foil anode, a separator, and a porous cathode ... Keywords: Finite element method, Homogenization, Multi-scale modeling, Porous electrode theory

Stephanie Golmon; Kurt Maute; Martin L. Dunn

2009-12-01T23:59:59.000Z

173

Multi-Scale Mass Transfer Processes Controlling Natural Attenuation and Engineered Remediation: An IFRC Focused on Hanford’s 300 Area Uranium Plume January 2011 to January 2012  

SciTech Connect

The Integrated Field Research Challenge (IFRC) at the Hanford Site 300 Area uranium (U) plume addresses multi-scale mass transfer processes in a complex subsurface biogeochemical setting where groundwater and riverwater interact. A series of forefront science questions on reactive mass transfer motivates research. These questions relate to the effect of spatial heterogeneities; the importance of scale; coupled interactions between biogeochemical, hydrologic, and mass transfer processes; and measurements and approaches needed to characterize and model a mass-transfer dominated biogeochemical system. The project was initiated in February 2007, with CY 2007, CY 2008, CY 2009, and CY 2010 progress summarized in preceding reports. A project peer review was held in March 2010, and the IFRC project acted upon all suggestions and recommendations made in consequence by reviewers and SBR/DOE. These responses have included the development of 'Modeling' and 'Well-Field Mitigation' plans that are now posted on the Hanford IFRC web-site, and modifications to the IFRC well-field completed in CY 2011. The site has 35 instrumented wells, and an extensive monitoring system. It includes a deep borehole for microbiologic and biogeochemical research that sampled the entire thickness of the unconfined 300 A aquifer. Significant, impactful progress has been made in CY 2011 including: (i) well modifications to eliminate well-bore flows, (ii) hydrologic testing of the modified well-field and upper aquifer, (iii) geophysical monitoring of winter precipitation infiltration through the U-contaminated vadose zone and spring river water intrusion to the IFRC, (iv) injection experimentation to probe the lower vadose zone and to evaluate the transport behavior of high U concentrations, (v) extended passive monitoring during the period of water table rise and fall, and (vi) collaborative down-hole experimentation with the PNNL SFA on the biogeochemistry of the 300 A Hanford-Ringold contact and the underlying redox transition zone. The modified well-field has functioned superbly without any evidence for well-bore flows. Beyond these experimental efforts, our site-wide reactive transport models (PFLOTRAN and eSTOMP) have been updated to include site geostatistical models of both hydrologic properties and adsorbed U distribution; and new hydrologic characterization measurements of the upper aquifer. These increasingly robust models are being used to simulate past and recent U desorption-adsorption experiments performed under different hydrologic conditions, and heuristic modeling to understand the complex functioning of the smear zone. We continued efforts to assimilate geophysical logging and 3D ERT characterization data into our site wide geophysical model, with significant and positive progress in 2011 that will enable publication in 2012. Our increasingly comprehensive field experimental results and robust reactive transport simulators, along with the field and laboratory characterization, are leading to a new conceptual model of U(VI) flow and transport in the IFRC footprint and the 300 Area in general, and insights on the microbiological community and associated biogeochemical processes influencing N, S, C, Mn, and Fe. Collectively these findings and higher scale models are providing a unique and unparalleled system-scale understanding of the biogeochemical function of the groundwater-river interaction zone.

Zachara, John M.; Bjornstad, Bruce N.; Christensen, John N.; Conrad, Mark S.; Fredrickson, Jim K.; Freshley, Mark D.; Haggerty, Roy; Hammond, Glenn E.; Kent, Douglas B.; Konopka, Allan; Lichtner, Peter C.; Liu, Chongxuan; McKinley, James P.; Murray, Christopher J.; Rockhold, Mark L.; Rubin, Yoram; Vermeul, Vincent R.; Versteeg, Roelof J.; Zheng, Chunmiao

2012-03-05T23:59:59.000Z

174

Multi-Scale Mass Transfer Processes Controlling Natural Attenuation and Engineered Remediation: An IFRC Focused on Hanford’s 300 Area Uranium Plume January 2011 to January 2012  

SciTech Connect

The Integrated Field Research Challenge (IFRC) at the Hanford Site 300 Area uranium (U) plume addresses multi-scale mass transfer processes in a complex subsurface biogeochemical setting where groundwater and riverwater interact. A series of forefront science questions on reactive mass transfer motivates research. These questions relate to the effect of spatial heterogeneities; the importance of scale; coupled interactions between biogeochemical, hydrologic, and mass transfer processes; and measurements and approaches needed to characterize and model a mass-transfer dominated biogeochemical system. The project was initiated in February 2007, with CY 2007, CY 2008, CY 2009, and CY 2010 progress summarized in preceding reports. A project peer review was held in March 2010, and the IFRC project acted upon all suggestions and recommendations made in consequence by reviewers and SBR/DOE. These responses have included the development of 'Modeling' and 'Well-Field Mitigation' plans that are now posted on the Hanford IFRC web-site, and modifications to the IFRC well-field completed in CY 2011. The site has 35 instrumented wells, and an extensive monitoring system. It includes a deep borehole for microbiologic and biogeochemical research that sampled the entire thickness of the unconfined 300 A aquifer. Significant, impactful progress has been made in CY 2011 including: (i) well modifications to eliminate well-bore flows, (ii) hydrologic testing of the modified well-field and upper aquifer, (iii) geophysical monitoring of winter precipitation infiltration through the U-contaminated vadose zone and spring river water intrusion to the IFRC, (iv) injection experimentation to probe the lower vadose zone and to evaluate the transport behavior of high U concentrations, (v) extended passive monitoring during the period of water table rise and fall, and (vi) collaborative down-hole experimentation with the PNNL SFA on the biogeochemistry of the 300 A Hanford-Ringold contact and the underlying redox transition zone. The modified well-field has functioned superbly without any evidence for well-bore flows. Beyond these experimental efforts, our site-wide reactive transport models (PFLOTRAN and eSTOMP) have been updated to include site geostatistical models of both hydrologic properties and adsorbed U distribution; and new hydrologic characterization measurements of the upper aquifer. These increasingly robust models are being used to simulate past and recent U desorption-adsorption experiments performed under different hydrologic conditions, and heuristic modeling to understand the complex functioning of the smear zone. We continued efforts to assimilate geophysical logging and 3D ERT characterization data into our site wide geophysical model, with significant and positive progress in 2011 that will enable publication in 2012. Our increasingly comprehensive field experimental results and robust reactive transport simulators, along with the field and laboratory characterization, are leading to a new conceptual model of U(VI) flow and transport in the IFRC footprint and the 300 Area in general, and insights on the microbiological community and associated biogeochemical processes influencing N, S, C, Mn, and Fe. Collectively these findings and higher scale models are providing a unique and unparalleled system-scale understanding of the biogeochemical function of the groundwater-river interaction zone.

Zachara, John M.; Bjornstad, Bruce N.; Christensen, John N.; Conrad, Mark S.; Fredrickson, Jim K.; Freshley, Mark D.; Haggerty, Roy; Hammond, Glenn E.; Kent, Douglas B.; Konopka, Allan; Lichtner, Peter C.; Liu, Chongxuan; McKinley, James P.; Murray, Christopher J.; Rockhold, Mark L.; Rubin, Yoram; Vermeul, Vincent R.; Versteeg, Roelof J.; Zheng, Chunmiao

2012-03-05T23:59:59.000Z

175

A Framework to Structure Agent-Based Modeling Data for Social-Ecological Systems  

E-Print Network (OSTI)

Methodological issues on agent-based models for analyticalof a household level agent-based model of landcover change.individual-based and agent-based models. Ecological Modeling

Altaweel, Mark R; Alessa, Lilian N.; Kliskey, Andrew; Bone, Chris

2010-01-01T23:59:59.000Z

176

Multi-scale and Integrated Characterization of the Marcellus Shale in the Appalachian Basin: From Microscopes to Mapping  

Science Conference Proceedings (OSTI)

Historic data from the Department of Energy Eastern Gas Shale Project (ESGP) were compiled to develop a database of geochemical analyses, well logs, lithological and natural fracture descriptions from oriented core, and reservoir parameters. The nine EGSP wells were located throughout the Appalachian Basin and intercepted the Marcellus Shale from depths of 750 meters (2500 ft) to 2500 meters (8200 ft). A primary goal of this research is to use these existing data to help construct a geologic framework model of the Marcellus Shale across the basin and link rock properties to gas productivity. In addition to the historic data, x-ray computerized tomography (CT) of entire cores with a voxel resolution of 240mm and optical microscopy to quantify mineral and organic volumes was performed. Porosity and permeability measurements in a high resolution, steady-state flow apparatus are also planned. Earth Vision software was utilized to display and perform volumetric calculations on individual wells, small areas with several horizontal wells, and on a regional basis. The results indicate that the lithologic character of the Marcellus Shale changes across the basin. Gas productivity appears to be influenced by the properties of the organic material and the mineral composition of the rock, local and regional structural features, the current state of in-situ stress, and lithologic controls on the geometry of induced fractures during stimulations. The recoverable gas volume from the Marcellus Shale is variable over the vertical stratigraphic section, as well as laterally across the basin. The results from this study are expected to help improve the assessment of the resource, and help optimize the recovery of natural gas.

Crandall, Dustin; Soeder, Daniel J; McDannell, Kalin T.; Mroz, Thomas

2010-01-01T23:59:59.000Z

177

A Hydrostratigraphic Framework Model and Alternatives for the Groundwater Flow and Contaminant Transport Model of Corrective Action Unit 98: Frenchman Flat, Clark, Lincoln and Nye Counties, Nevada  

SciTech Connect

A new, revised three-dimensional (3-D) hydrostratigraphic framework model for Frenchman Flat was completed in 2004. The area of interest includes Frenchman Flat, a former nuclear testing area at the Nevada Test Site, and proximal areas. Internal and external reviews of an earlier (Phase I) Frenchman Flat model recommended additional data collection to address uncertainties. Subsequently, additional data were collected for this Phase II initiative, including five new drill holes and a 3-D seismic survey.

Bechtel Nevada

2005-09-01T23:59:59.000Z

178

Multi-Scale Mass Transfer Processes Controlling Natural Attenuation and Engineered Remediation: An IFRC Focused on Hanford’s 300 Area Uranium Plume  

Science Conference Proceedings (OSTI)

The Integrated Field-Scale Subsurface Research Challenge (IFRC) at the Hanford Site 300 Area uranium (U) plume addresses multi-scale mass transfer processes in a complex hydrogeologic setting where groundwater and riverwater interact. A series of forefront science questions on mass transfer are posed for research which relate to the effect of spatial heterogeneities; the importance of scale; coupled interactions between biogeochemical, hydrologic, and mass transfer processes; and measurements and approaches needed to characterize and model a mass-transfer dominated system. The project was initiated in February 2007, with CY 2007 and CY 2008 progress summarized in preceding reports. The site has 35 instrumented wells, and an extensive monitoring system. It includes a deep borehole for microbiologic and biogeochemical research that sampled the entire thickness of the unconfined 300 A aquifer. Significant, impactful progress has been made in CY 2009 with completion of extensive laboratory measurements on field sediments, field hydrologic and geophysical characterization, four field experiments, and modeling. The laboratory characterization results are being subjected to geostatistical analyses to develop spatial heterogeneity models of U concentration and chemical, physical, and hydrologic properties needed for reactive transport modeling. The field experiments focused on: (1) physical characterization of the groundwater flow field during a period of stable hydrologic conditions in early spring, (2) comprehensive groundwater monitoring during spring to characterize the release of U(VI) from the lower vadose zone to the aquifer during water table rise and fall, (3) dynamic geophysical monitoring of salt-plume migration during summer, and (4) a U reactive tracer experiment (desorption) during the fall. Geophysical characterization of the well field was completed using the down-well Electrical Resistance Tomography (ERT) array, with results subjected to robust, geostatistically constrained inversion analyses. These measurements along with hydrologic characterization have yielded 3D distributions of hydraulic properties that have been incorporated into an updated and increasingly robust hydrologic model. Based on significant findings from the microbiologic characterization of deep borehole sediments in CY 2008, down-hole biogeochemistry studies were initiated where colonization substrates and spatially discrete water and gas samplers were deployed to select wells. The increasingly comprehensive field experimental results, along with the field and laboratory characterization, are leading to a new conceptual model of U(VI) flow and transport in the IFRC footprint and the 300 Area in general, and insights on the microbiological community and associated biogeochemical processes. A significant issue related to vertical flow in the IFRC wells was identified and evaluated during the spring and fall field experimental campaigns. Both upward and downward flows were observed in response to dynamic Columbia River stage. The vertical flows are caused by the interaction of pressure gradients with our heterogeneous hydraulic conductivity field. These impacts are being evaluated with additional modeling and field activities to facilitate interpretation and mitigation. The project moves into CY 2010 with ambitious plans for a drilling additional wells for the IFRC well field, additional experiments, and modeling. This research is part of the ERSP Hanford IFRC at Pacific Northwest National Laboratory.

Zachara, John M.; Bjornstad, Bruce N.; Christensen, John N.; Conrad, Mark E.; Fredrickson, Jim K.; Freshley, Mark D.; Haggerty, Roy; Hammon, Glenn; Kent, Douglas B.; Konopka, Allan; Lichtner, Peter C.; Liu, Chongxuan; McKinley, James P.; Murray, Christopher J.; Rockhold, Mark L.; Rubin, Yoram; Vermeul, Vincent R.; Versteeg, Roelof J.; Ward, Anderson L.; Zheng, Chunmiao

2010-02-01T23:59:59.000Z

179

Sensitivity of Surface Flux Simulations to Hydrologic Parameters Based on an Uncertainty Quantification Framework Applied to the Community Land Model  

SciTech Connect

Uncertainties in hydrologic parameters could have significant impacts on the simulated water and energy fluxes and land surface states, which will in turn affect atmospheric processes and the carbon cycle. Quantifying such uncertainties is an important step toward better understanding and quantification of uncertainty of integrated earth system models. In this paper, we introduce an uncertainty quantification (UQ) framework to analyze sensitivity of simulated surface fluxes to selected hydrologic parameters in the Community Land Model (CLM4) through forward modeling. Thirteen flux tower footprints spanning a wide range of climate and site conditions were selected to perform sensitivity analyses by perturbing the parameters identified. In the UQ framework, prior information about the parameters was used to quantify the input uncertainty using the Minimum-Relative-Entropy approach. The quasi-Monte Carlo approach was applied to generate samples of parameters on the basis of the prior pdfs. Simulations corresponding to sampled parameter sets were used to generate response curves and response surfaces and statistical tests were used to rank the significance of the parameters for output responses including latent (LH) and sensible heat (SH) fluxes. Overall, the CLM4 simulated LH and SH show the largest sensitivity to subsurface runoff generation parameters. However, study sites with deep root vegetation are also affected by surface runoff parameters, while sites with shallow root zones are also sensitive to the vadose zone soil water parameters. Generally, sites with finer soil texture and shallower rooting systems tend to have larger sensitivity of outputs to the parameters. Our results suggest the necessity of and possible ways for parameter inversion/calibration using available measurements of latent/sensible heat fluxes to obtain the optimal parameter set for CLM4. This study also provided guidance on reduction of parameter set dimensionality and parameter calibration framework design for CLM4 and other land surface models under different hydrologic and climatic regimes.

Hou, Zhangshuan; Huang, Maoyi; Leung, Lai-Yung R.; Lin, Guang; Ricciuto, Daniel M.

2012-08-10T23:59:59.000Z

180

Cybersecurity Framework  

Science Conference Proceedings (OSTI)

... the Executive Order “Improving Critical Infrastructure Cybersecurity” has directed NIST to work with stakeholders to develop a voluntary framework ...

2013-08-30T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Calibration of a distributed flood forecasting model with input uncertainty using a Bayesian framework  

E-Print Network (OSTI)

Calibrated probabilistic forecasting using ensemble modelSutcliffe (1970), River flow forecasting through conceptuala Distributed Flood Forecasting Model with Input Uncertainty

Li, M.

2013-01-01T23:59:59.000Z

182

Non-Intrusive Experiemental Investigation of Multi-Scale Flow Behavior in Rod Bundle with Spacer-Grids  

E-Print Network (OSTI)

Experiments investigating complex flows in rod bundles with spacer grids that have mixing devices (such as flow mixing vanes) have mostly been performed using single-point measurements. Although these measurements allow local comparisons of experimental and numerical data they provide little insight because the discrepancies can be due to the integrated effects of many complex flow phenomena such as wake-wake, wake-vane, and vane-boundary layer interactions occurring simultaneously in a complex flow environment. In order to validate the simulations results, detailed comparison with experimental data must be done. This work describes an experimental database obtained using Time Resolved Particle Image Velocimetry (TR-PIV) measurements within a 5 x 5 rod bundle with spacer-grids. Measurements were performed using two different grid designs. One typical of Boiling Water Reactors (BWR) with swirl type mixing vanes and the other typical of Pressurized Water Reactors (PWR) with split type mixing vanes. High quality data was obtained in the vicinity of the grid using the multi-scale approach. One of the unique characteristic of this set-up is the use of the Matched Index of Refraction (MIR) technique employed in this investigation. This approach allows the use of high temporal and spatial non-intrusive dynamic measurement techniques to investigate the flow evolution below and immediately above the spacer. The experimental data presented includes explanation of the various cases tested such as test rig dimensions, measurement zones, the test equipment and the boundary conditions in order to provide appropriate data for comparison with Computational Fluid Dynamics (CFD) simulations. Turbulence parameters of the obtained data are analyzed in order to gain insight of the physical phenomena. The shape of the velocity profile at various distances from the spacer show important modifications passing the grid which delineates the significant effects of the presence of the grid spacer. Influence of the vanes wake in the global velocity was quantified to be up to a distance of 4 hydraulic diameters from the edge of the grid.Spatial and temporal correlations in the two measured dimensions were performed to quantify the time and length scales present in the flow in the vicinity of the grids and its influence in the flow modification induced by the vanes. Detection of vortex cores was performed using the vorticity, swirl strength and Galilean decomposition approach. The resulted cores were then tracked in time, in order to observe the evolution of the structures under the influence of the vanes for each grid. Vortex stretching was quantified in order to gain insight of the energy dissipation process normally associated with the phenomena. This work presents data in a single-phase flow situation and an analysis of these data for understanding complex flow structure. This data provide for the first time detailed temporal velocity full field which can be used to validate CFD codes.

Dominguez Ontiveros, Elvis Efren

2010-05-01T23:59:59.000Z

183

A Hypergraph Framework for Optimal Model-Based Decomposition ofDesign Problems  

Science Conference Proceedings (OSTI)

Decomposition of large engineering system models is desirable since increased model size reduces reliability and speed of numerical solution algorithms. The article presents a methodology for optimal model-based decomposition (OMBD) of design problems, ... Keywords: decomposition, hypergraph partitioning, large-scale design, model decomposition, multidisciplinary design

Nestor F. Michelena; Panos Y. Papalambros

1997-09-01T23:59:59.000Z

184

Elucidating Model Inadequacies in a Cloud Parameterization by Use of an Ensemble-Based Calibration Framework  

Science Conference Proceedings (OSTI)

Every cloud parameterization contains structural model errors. The source of these errors is difficult to pinpoint because cloud parameterizations contain nonlinearities and feedbacks. To elucidate these model inadequacies, this paper uses a ...

Jean-Christophe Golaz; Vincent E. Larson; James A. Hansen; David P. Schanen; Brian M. Griffin

2007-12-01T23:59:59.000Z

185

A quantitative framework For large-scale model estimation and discrimination In systems biology  

E-Print Network (OSTI)

Using models to simulate and analyze biological networks requires principled approaches to parameter estimation and model discrimination. We use Bayesian and Monte Carlo methods to recover the full probability distributions ...

Eydgahi, Hoda

2013-01-01T23:59:59.000Z

186

Cumulus Entrainment and Cloud Droplet Spectra: A Numerical Model within a Two-Dimensional Dynamical Framework  

Science Conference Proceedings (OSTI)

A simple numerical model designed to predict the evolution of cloud droplet spectra with special emphasis on the role of entrainment is developed for a case of nonprecipitating cloud. The model assumes that the cloud water mixing ratio at any ...

Jean-Louis Brenguier; Wojciech W. Grabowski

1993-01-01T23:59:59.000Z

187

Performance evaluation of competing forecasting models: A multidimensional framework based on MCDA  

Science Conference Proceedings (OSTI)

So far, competing forecasting models are compared to each other using a single criterion at a time, which often leads to different rankings for different criteria - a situation where one cannot make an informed decision as to which model performs best ... Keywords: Crude oil prices, Forecasting models, Multi-Criteria Decision Analysis, Performance evaluation

Bing Xu; Jamal Ouenniche

2012-07-01T23:59:59.000Z

188

A multidiscipline and multi-rate modeling framework for planar solid-oxide fuel cell based power-conditioning system for vehicular APU  

Science Conference Proceedings (OSTI)

We develop a numerical modeling framework for planar solid-oxide fuel cell (PSOFC) based vehicular auxiliary power unit (APU). The power-conditioning system (PCS) model comprises the comprehensive transient models of PSOFC, balance-of-plant and power-electronics ...

Sudip K. Mazumder; Sanjaya Pradhan; Joseph Hartvigsen; Diego Rancruel; Michael R. von Spakovsky; Moe Khaleel

2007-07-01T23:59:59.000Z

189

Land information system: An interoperable framework for high resolution land surface modeling  

E-Print Network (OSTI)

surface states and fluxes. LIS employs the use of scalable, high performance computing and data management. All rights reserved. Keywords: Land surface modeling; High performance computing; Object

Houser, Paul R.

190

Calibration of a distributed flood forecasting model with input uncertainty using a Bayesian framework  

E-Print Network (OSTI)

model formulation and Bayesian inference, J. Hydrol. , 340(to develop the Bayesian inference equations. We assume thatof the current Bayesian inference of using only outlet

Li, M.

2013-01-01T23:59:59.000Z

191

Calibration of a distributed flood forecasting model with input uncertainty using a Bayesian framework  

E-Print Network (OSTI)

An integrated hydrologic Bayesian multimodel combinationon "An integrated hydrologic Bayesian multimodel combinationand Z. S. Hou (2007), A Bayesian model for gas saturation

Li, M.

2013-01-01T23:59:59.000Z

192

Developing an Integrated Model Framework for the Assessment of Sustainable Agricultural Residue Removal Limits for Bioenergy Systems  

DOE Green Energy (OSTI)

Agricultural residues have significant potential as a feedstock for bioenergy production, but removing these residues can have negative impacts on soil health. Models and datasets that can support decisions about sustainable agricultural residue removal are available; however, no tools currently exist capable of simultaneously addressing all environmental factors that can limit availability of residue. The VE-Suite model integration framework has been used to couple a set of environmental process models to support agricultural residue removal decisions. The RUSLE2, WEPS, and Soil Conditioning Index models have been integrated. A disparate set of databases providing the soils, climate, and management practice data required to run these models have also been integrated. The integrated system has been demonstrated for two example cases. First, an assessment using high spatial fidelity crop yield data has been run for a single farm. This analysis shows the significant variance in sustainably accessible residue across a single farm and crop year. A second example is an aggregate assessment of agricultural residues available in the state of Iowa. This implementation of the integrated systems model demonstrates the capability to run a vast range of scenarios required to represent a large geographic region.

David Muth, Jr.; Jared Abodeely; Richard Nelson; Douglas McCorkle; Joshua Koch; Kenneth Bryden

2011-08-01T23:59:59.000Z

193

Data-driven modeling and simulation framework for material handling systems in coal mines  

Science Conference Proceedings (OSTI)

In coal mining industry, discrete-event simulation has been widely used to support decisions in material handling system (MHS) to achieve premiums on revenues. However, the conventional simulation modeling approach requires extensive expertise of simulation ... Keywords: Coal mining, Data-driven modeling, Decision making, Material handling system

Chao Meng; Sai Srinivas Nageshwaraniyer; Amir Maghsoudi; Young-Jun Son; Sean Dessureault

2013-03-01T23:59:59.000Z

194

Bio-PEPA: A framework for the modelling and analysis of biological systems  

Science Conference Proceedings (OSTI)

In this work we present Bio-PEPA, a process algebra for the modelling and the analysis of biochemical networks. It is a modification of PEPA, originally defined for the performance analysis of computer systems, in order to handle some features of biological ... Keywords: Analysis, Biochemical networks, Modelling, Process algebras

Federica Ciocchetta; Jane Hillston

2009-08-01T23:59:59.000Z

195

Comparison of Bulk and Bin Warm-Rain Microphysics Models Using a Kinematic Framework  

Science Conference Proceedings (OSTI)

This paper discusses the development and testing of a bulk warm-rain microphysics model that is capable of addressing the impact of atmospheric aerosols on ice-free clouds. Similarly to previous two-moment bulk schemes, this model predicts the ...

Hugh Morrison; Wojciech W. Grabowski

2007-08-01T23:59:59.000Z

196

A Generic Framework for a Combined Agent-based Market and Production Model  

Science Conference Proceedings (OSTI)

Agent-based market models are in general based on a-priori defined supply and demand schemes. Likewise, production models assume that prices are known a-priori. In reality prices depend on variable demands and supplies, while demand and supply depend ... Keywords: Agent-based computational economics, Invisible hand, Markets, Price mechanism, Von Neumann technology matrices

Bas Straatman; Danielle J. Marceau; Roger White

2013-04-01T23:59:59.000Z

197

A stochastic multiscale framework for modeling flow through random heterogeneous porous media  

Science Conference Proceedings (OSTI)

Flow through porous media is ubiquitous, occurring from large geological scales down to the microscopic scales. Several critical engineering phenomena like contaminant spread, nuclear waste disposal and oil recovery rely on accurate analysis and prediction ... Keywords: Collocation methods, Data-driven modeling, Manifold learning, Mixed finite elements, Non-linear model reduction, Scalable algorithms, Sparse grids, Stochastic partial differential equations, Variational multiscale methods

B. Ganapathysubramanian; N. Zabaras

2009-01-01T23:59:59.000Z

198

A modelling framework to support farmers in designing agricultural production systems  

Science Conference Proceedings (OSTI)

Given the new challenges confronting world agriculture, innovative production systems need to be designed at the farm level. As experiments are not easy to conduct at this level, modelling is required to evaluate ex-ante the multiple impacts of proposed ... Keywords: Biophysical system, Conceptual model, Decision system, Farm, Simulation tool, Technical system

P. -Y. Le Gal; A. Merot; C. -H. Moulin; M. Navarrete; J. Wery

2010-02-01T23:59:59.000Z

199

The Priority/Confidence Model as a Framework for Soccer Agents  

Science Conference Proceedings (OSTI)

We propose the Priority/Confidence model as a reasoning model for agents. Decisions are made according to a confidence measure which is based on the importance of actions (priority) and the satisfaction of a priori preconditions.We implemented the Priority/Confidence ...

Jan Lubbers; Rogier R. Spaans

1999-01-01T23:59:59.000Z

200

Simulation for emergency response: a framework for modeling and simulation for emergency response  

Science Conference Proceedings (OSTI)

A number of modeling and simulation tools have been developed and more are being developed for emergency response applications. The available simulation tools are meant mostly for standalone use. Addressing an emergency incident requires addressing multiple ...

Sanjay Jain; Charles McLean

2003-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Smart finite state devices: A modeling framework for demand response technologies  

E-Print Network (OSTI)

We introduce and analyze Markov Decision Process (MDP) machines to model individual devices which are expected to participate in future demand-response markets on distribution grids. We differentiate devices into the ...

Turitsyn, Konstantin

202

Data Assimilation within the Advanced Circulation (ADCIRC) Modeling Framework for Hurricane Storm Surge Forecasting  

Science Conference Proceedings (OSTI)

Accurate, real-time forecasting of coastal inundation due to hurricanes and tropical storms is a challenging computational problem requiring high-fidelity forward models of currents and water levels driven by hurricane-force winds. Despite best ...

T. Butler; M. U. Altaf; C. Dawson; I. Hoteit; X. Luo; T. Mayo

2012-07-01T23:59:59.000Z

203

Integrating and Interpreting Aerosol Observations and Models within the PARAGON Framework  

Science Conference Proceedings (OSTI)

Given the breadth and complexity of available data, constructing a measurement-based description of global tropospheric aerosols that will effectively confront and constrain global three-dimensional models is a daunting task. Because data are ...

Thomas P. Ackerman; Amy J. Braverman; David J. Diner; Theodore L. Anderson; Ralph A. Kahn; John V. Martonchik; Joyce E. Penner; Philip J. Rasch; Bruce A. Wielicki; Bin Yu

2004-10-01T23:59:59.000Z

204

Development of a Modelling and Simulation Method Comparison and Selection Framework for Health Services Management  

E-Print Network (OSTI)

were car- ried out with local and national level health care man- agers to investigate their responses in depth. At the end of the project (after iterative revision of the tool), the national level health care manager at the NHS Institute of Innovation... and modelling in aerospace and the military Distributed Simulation, Discrete Event Simulation, System Dynamics, Real Time Simulation, Monte Carlo Simulation, Agent Based Simulation, War Gaming, Hybrid Simulation, Inverse Simulation, Petri-net, Markovian Model...

Jun, Gyuchan T; Morris, Zoe; Eldabi, Tillal; Harper, Paul; Naseer, Aisha; Patel, Brijesh; Clarkson, John P

2011-05-19T23:59:59.000Z

205

Agent-based modeling of climate policy: An introduction to the ENGAGE multi-level model framework  

Science Conference Proceedings (OSTI)

Model-based support of climate policy is scientifically challenging because climate change involves linked physical and social systems that operate on multiple levels: local, national, and international. As a result, models must employ some strongly ... Keywords: Climate policy, Complex systems, Energy-economic modeling, Evolutionary economics, Integrated assessment model, System-of-systems

M. D. Gerst, P. Wang, A. Roventini, G. Fagiolo, G. Dosi, R. B. Howarth, M. E. Borsuk

2013-06-01T23:59:59.000Z

206

A hierarchical framework for coupling surface fluxes to atompsheric general circulation models: The homogeneity test  

SciTech Connect

The atmosphere and the biosphere are inherently coupled to one another. Atmospheric surface state variables such as temperature, winds, water vapor, precipitation, and radiation control biophysical, biogeochemical, and ecological processes at the surface and subsurface. At the same time, surface fluxes of momentum, moisture, heat, and trace gases act as time-dependent boundary conditions providing feedback on atmospheric processes. To understand such phenomena, a coupled set of interactive models is required. Costs are still prohibitive for computing surface/subsurface fluxes directly for medium-resolution atmospheric general circulation models (AGCMs), but a technique has been developed for testing large-scale homogeneity and accessing surface parameterizations and models to reduce this computational cost and maintain accuracy. This modeling system potentially bridges the observed spatial and temporal ranges yet allows the incorporation of necessary details about individual ecological community types or biomes and simulates the net momentum, heat, moisture, and trace gas fluxes. This suite of coupled models is defined here as the hierarchical systems flux scheme (HSFS).

Miller, N.L.

1993-01-01T23:59:59.000Z

207

Towards next generation ocean models : novel discontinuous Galerkin schemes for 2D unsteady biogeochemical models  

E-Print Network (OSTI)

A new generation of efficient parallel, multi-scale, and interdisciplinary ocean models is required for better understanding and accurate predictions. The purpose of this thesis is to quantitatively identify promising ...

Ueckermann, Mattheus P

2009-01-01T23:59:59.000Z

208

MINERVA: model driven and service oriented framework for the continuous business process improvement and related tools  

Science Conference Proceedings (OSTI)

The importance and benefits of Business Process Management (BPM) for organizations are nowadays broadly recognized, as not only the business area but also the information technology one are embracing and adopting the paradigm. The implementation of business ... Keywords: business process, business process management (BPM), improvement, model driven development (MDD), service oriented computing (SOC)

Andrea Delgado; Francisco Ruiz; Ignacio García-Rodríguez de Guzmán; Mario Piattini

2009-11-01T23:59:59.000Z

209

Accuracy Analysis of a Spectral Element Atmospheric Model Using a Fully Implicit Solution Framework  

Science Conference Proceedings (OSTI)

A fully implicit (FI) time integration method has been implemented into a spectral finite-element shallow-water equation model on a sphere, and it is compared to existing fully explicit leapfrog and semi-implicit methods for a suite of test ...

Katherine J. Evans; Mark A. Taylor; John B. Drake

2010-08-01T23:59:59.000Z

210

Smart Finite State Devices: A Modeling Framework for Demand Response Technologies  

E-Print Network (OSTI)

We introduce and analyze Markov Decision Process (MDP) machines to model individual devices which are expected to participate in future demand-response markets on distribution grids. We differentiate devices into the following four types: (a) optional loads that can be shed, e.g. light dimming; (b) deferrable loads that can be delayed, e.g. dishwashers; (c) controllable loads with inertia, e.g. thermostatically-controlled loads, whose task is to maintain an auxiliary characteristic (temperature) within pre-defined margins; and (d) storage devices that can alternate between charging and generating. Our analysis of the devices seeks to find their optimal price-taking control strategy under a given stochastic model of the distribution market.

Turitsyn, Konstantin; Ananyev, Maxim; Chertkov, Michael

2011-01-01T23:59:59.000Z

211

A General Simulation Framework for Supply Chain Modeling: State of the Art and Case Study  

E-Print Network (OSTI)

Nowadays there is a large availability of discrete event simulation software that can be easily used in different domains: from industry to supply chain, from healthcare to business management, from training to complex systems design. Simulation engines of commercial discrete event simulation software use specific rules and logics for simulation time and events management. Difficulties and limitations come up when commercial discrete event simulation software are used for modeling complex real world-systems (i.e. supply chains, industrial plants). The objective of this paper is twofold: first a state of the art on commercial discrete event simulation software and an overview on discrete event simulation models development by using general purpose programming languages are presented; then a Supply Chain Order Performance Simulator (SCOPS, developed in C++) for investigating the inventory management problem along the supply chain under different supply chain scenarios is proposed to readers.

Cimino, Antonio; Mirabelli, Giovanni

2010-01-01T23:59:59.000Z

212

Autonomous farming: modelling and control of agricultural machinery in a unified framework  

Science Conference Proceedings (OSTI)

There are significant challenges faced by the farming industry, including a reduced labour workforce and a corporate style of farming. Such factors demand an increase in farming efficiency and productivity. This paper describes future autonomous farming ... Keywords: agricultural machinery, agricultural robotics, agronomy data, articulated farm vehicles, autonomous farming, autonomous robots, autonomous vehicles, intelligent systems, precision agriculture, precision farming, tracking control, trajectory tracking, uncertainty, vehicle control, vehicle modelling

Ray Eaton; Jay Katupitiya; Kheng Wah Siew; Blair Howarth

2010-12-01T23:59:59.000Z

213

An Integrated Modeling Framework for Exploring Network Reconfiguration of Distributed Controlled Homogenous Power Inverter Network using Composite Lyapunov Function Based Reachability Bound  

Science Conference Proceedings (OSTI)

We describe an integrated modeling framework for an interactive power network (IPN) consisting of a power network (PN) and a wireless communication network (WCN). The PN is modeled using a set of piecewise linear (PWL) equations. The WCN is modeled using ... Keywords: Lyapunov stability, Markov-chain model, communication network, distributed control systems, electric power network, joint optimization, linear matrix inequality, optimization, piecewise linear systems, reaching conditions, stability, switching power converters, wireless

Sudip K. Mazumder; Muhammad Tahir; Kaustuva Acharya

2010-02-01T23:59:59.000Z

214

Context inclusive function evaluation: a case study with EM-based multi-scale multi-granular image classification  

Science Conference Proceedings (OSTI)

Many statistical queries such as maximum likelihood estimation involve finding the best candidate model given a set of candidate models and a quality estimation function. This problem is common in important applications like land-use classification at ...

Vijay Gandhi; James M. Kang; Shashi Shekhar; Junchang Ju; Eric D. Kolaczyk; Sucharita Gopal

2009-10-01T23:59:59.000Z

215

1606 JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY VOLUME 46 Dynamic Surface Interface Exchanges of Mercury: A Review and Compartmentalized Modeling Framework  

E-Print Network (OSTI)

This paper presents a review of recent natural surface mercury exchange research in the context of a new modeling framework. The literature indicates that the mercury biogeochemical flux is more dynamic than the current models predict, with interacting multimedia storage and processes. Although several natural mercury emissions models have been created and incorporated into air quality models (AQMs), none are coupled with air quality models on a mass balance basis, and all lack the capacity to explain processes that involve the transport of mercury across atmosphere–surface media concentration gradients. Existing natural mercury emission models treat the surface as both an infinite source and infinite sink for emissions and deposition, respectively, and estimate emissions through the following three pathways: soil, vegetation, and surface waters. The use of these three transport pathways, but with compartmentalized surface storage in a surface–vegetation–atmosphere transport (SVAT) resistance model, is suggested. Surface water fluxes will be modeled using a two-film diffusion model coupled to a surface water photochemical model. This updated framework will allow both the parameterization of the transport of mercury across atmosphere– surface media concentration gradients and the accumulation/depletion of mercury in the surface media. However, several key parameters need further experimental verification before the proposed modeling framework can be implemented in an AQM. These include soil organic mercury interactions, bioavailability, cuticular transport of mercury, atmospheric surface compensation points for different vegetation species, and enhanced soil diffusion resulting from pressure perturbations. 1.

Jesse O. Bash; Patricia Bresnahan; David; R. Miller

2006-01-01T23:59:59.000Z

216

Metis: a thin-client application framework  

Science Conference Proceedings (OSTI)

This paper introduces a thin-client programming model and then presents an object-oriented framework for developing applications using the model. The programming model and the framework have evolved from interactions with developers and users of commercial ...

Deborra J. Zukowski; Apratim Purakayastha; Ajay Mohindra; Murthy Devarakonda

1997-06-01T23:59:59.000Z

217

Evaluating Low-Cloud Simulation from an Upgraded Multiscale Modeling Framework Model. Part II: Seasonal Variations over the Eastern Pacific  

Science Conference Proceedings (OSTI)

The eastern Pacific is a climatologically important region. Conventional coupled atmosphere–ocean general circulation models produce positive sea surface temperature biases of 2–5 K in this region because of insufficient stratocumulus clouds. In ...

Kuan-Man Xu; Anning Cheng

2013-08-01T23:59:59.000Z

218

U.S. Nuclear Regulatory Commission Extremely Low Probability of Rupture pilot study : xLPR framework model user's guide.  

Science Conference Proceedings (OSTI)

For the U.S. Nuclear Regulatory Commission (NRC) Extremely Low Probability of Rupture (xLPR) pilot study, Sandia National Laboratories (SNL) was tasked to develop and evaluate a probabilistic framework using a commercial software package for Version 1.0 of the xLPR Code. Version 1.0 of the xLPR code is focused assessing the probability of rupture due to primary water stress corrosion cracking in dissimilar metal welds in pressurizer surge nozzles. Future versions of this framework will expand the capabilities to other cracking mechanisms, and other piping systems for both pressurized water reactors and boiling water reactors. The goal of the pilot study project is to plan the xLPR framework transition from Version 1.0 to Version 2.0; hence the initial Version 1.0 framework and code development will be used to define the requirements for Version 2.0. The software documented in this report has been developed and tested solely for this purpose. This framework and demonstration problem will be used to evaluate the commercial software's capabilities and applicability for use in creating the final version of the xLPR framework. This report details the design, system requirements, and the steps necessary to use the commercial-code based xLPR framework developed by SNL.

Kalinich, Donald A.; Sallaberry, Cedric M.; Mattie, Patrick D.

2010-12-01T23:59:59.000Z

219

Infrastructure and Capacity Building: Creating an Enterprise GIS for Multiscale,Infrastructure and Capacity Building: Creating an Enterprise GIS for Multi scale, Interdisciplinary Analysis of Farmers' Land Use Decisions  

E-Print Network (OSTI)

development effort, which included team member training in ArcSDE & SQL, was designed to ensure,Infrastructure and Capacity Building: Creating an Enterprise GIS for Multi scale, Interdisciplinary Analysis of Farmers database management system (RDBMS). The vector, raster and tabular data are currently being integrated

Peterson, Blake R.

220

Toward an ontology framework supporting the integration of geographic information with modeling and simulation for critical infrastructure protection  

Science Conference Proceedings (OSTI)

Protecting the nation's infrastructure from natural disasters, inadvertent failures, or intentional attacks is a major national security concern. Gauging the fragility of infrastructure assets, and understanding how interdependencies across critical infrastructures affect their behavior, is essential to predicting and mitigating cascading failures, as well as to planning for response and recovery. Modeling and simulation (M&S) is an indispensable part of characterizing this complex system of systems and anticipating its response to disruptions. Bringing together the necessary components to perform such analyses produces a wide-ranging and coarse-grained computational workflow that must be integrated with other analysis workflow elements. There are many points in both types of work flows in which geographic information (GI) services are required. The GIS community recognizes the essential contribution of GI in this problem domain as evidenced by past OGC initiatives. Typically such initiatives focus on the broader aspects of GI analysis workflows, leaving concepts crucial to integrating simulations within analysis workflows to that community. Our experience with large-scale modeling of interdependent critical infrastructures, and our recent participation in a DRS initiative concerning interoperability for this M&S domain, has led to high-level ontological concepts that we have begun to assemble into an architecture that spans both computational and 'world' views of the problem, and further recognizes the special requirements of simulations that go beyond common workflow ontologies. In this paper we present these ideas, and offer a high-level ontological framework that includes key geospatial concepts as special cases of a broader view.

Ambrosiano, John J [Los Alamos National Laboratory; Bent, Russell W [Los Alamos National Laboratory; Linger, Steve P [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Computer Aided Multi-scale Design of SiC-Si3N4 Nanoceramic Composites for High-Temperature Structural Applications  

SciTech Connect

It is estimated that by using better and improved high temperature structural materials, the power generation efficiency of the power plants can be increased by 15% resulting in significant cost savings. One such promising material system for future high-temperature structural applications in power plants is Silicon Carbide-Silicon Nitride (SiC-Si{sub 3}N{sub 4}) nanoceramic matrix composites. The described research work focuses on multiscale simulation-based design of these SiC-Si{sub 3}N{sub 4} nanoceramic matrix composites. There were two primary objectives of the research: (1) Development of a multiscale simulation tool and corresponding multiscale analyses of the high-temperature creep and fracture resistance properties of the SiC-Si{sub 3}N{sub 4} nanocomposites at nano-, meso- and continuum length- and timescales; and (2) Development of a simulation-based robust design optimization methodology for application to the multiscale simulations to predict the range of the most suitable phase morphologies for the desired high-temperature properties of the SiC-Si{sub 3}N{sub 4} nanocomposites. The multiscale simulation tool is based on a combination of molecular dynamics (MD), cohesive finite element method (CFEM), and continuum level modeling for characterizing time-dependent material deformation behavior. The material simulation tool is incorporated in a variable fidelity model management based design optimization framework. Material modeling includes development of an experimental verification framework. Using material models based on multiscaling, it was found using molecular simulations that clustering of the SiC particles near Si{sub 3}N{sub 4} grain boundaries leads to significant nanocomposite strengthening and significant rise in fracture resistance. It was found that a control of grain boundary thicknesses by dispersing non-stoichiometric carbide or nitride phases can lead to reduction in strength however significant rise in fracture strength. The temperature dependent strength and microstructural stability was also significantly depended upon the dispersion of new phases at grain boundaries. The material design framework incorporates high temperature creep and mechanical strength data in order to develop a collaborative multiscale framework of morphology optimization. The work also incorporates a computer aided material design dataset development procedure where a systematic dataset on material properties and morphology correlation could be obtained depending upon a material processing scientist's requirements. Two different aspects covered under this requirement are: (1) performing morphology related analyses at the nanoscale and at the microscale to develop a multiscale material design and analyses capability; (2) linking material behavior analyses with the developed design tool to form a set of material design problems that illustrate the range of material design dataset development that could be performed. Overall, a software based methodology to design microstructure of particle based ceramic nanocomposites has been developed. This methodology has been shown to predict changes in phase morphologies required for achieving optimal balance of conflicting properties such as minimal creep strain rate and high fracture strength at high temperatures. The methodology incorporates complex material models including atomistic approaches. The methodology will be useful to design materials for high temperature applications including those of interest to DoE while significantly reducing cost of expensive experiments.

Vikas Tomer; John Renaud

2010-08-31T23:59:59.000Z

222

Crypto Key Management Framework  

Science Conference Proceedings (OSTI)

... A Framework for Designing Cryptographic Key Management Systems ... A Framework for Designing Cryptographic Key Management Systems ...

2013-08-13T23:59:59.000Z

223

Integrated, Multi-Scale Characterization of Imbibition and Wettability Phenomena Using Magnetic Resonance and Wide-Band Dielectric Measurements  

SciTech Connect

The petrophysical properties of rocks, particularly their relative permeability and wettability, strongly influence the efficiency and the time-scale of all hydrocarbon recovery processes. However, the quantitative relationships needed to account for the influence of wettability and pore structure on multi-phase flow are not yet available, largely due to the complexity of the phenomena controlling wettability and the difficulty of characterizing rock properties at the relevant length scales. This project brings together several advanced technologies to characterize pore structure and wettability. Grain-scale models are developed that help to better interpret the electric and dielectric response of rocks. These studies allow the computation of realistic configurations of two immiscible fluids as a function of wettability and geologic characteristics. These fluid configurations form a basis for predicting and explaining macroscopic behavior, including the relationship between relative permeability, wettability and laboratory and wireline log measurements of NMR and dielectric response. Dielectric and NMR measurements have been made show that the response of the rocks depends on the wetting and flow properties of the rock. The theoretical models can be used for a better interpretation and inversion of standard well logs to obtain accurate and reliable estimates of fluid saturation and of their producibility. The ultimate benefit of this combined theoretical/empirical approach for reservoir characterization is that rather than reproducing the behavior of any particular sample or set of samples, it can explain and predict trends in behavior that can be applied at a range of length scales, including correlation with wireline logs, seismic, and geologic units and strata. This approach can substantially enhance wireline log interpretation for reservoir characterization and provide better descriptions, at several scales, of crucial reservoir flow properties that govern oil recovery.

Mukul M. Sharma; Steven L. Bryant; Carlos Torres-Verdin; George Hirasaki

2007-09-30T23:59:59.000Z

224

A multi-scale qualitative approach to assess the impact of urbanization on natural habitats and their connectivity  

Science Conference Proceedings (OSTI)

Habitat loss and fragmentation are often concurrent to land conversion and urbanization. Simple application of GIS-based landscape pattern indicators may be not sufficient to support meaningful biodiversity impact assessment. A review of the literature reveals that habitat definition and habitat fragmentation are frequently inadequately considered in environmental assessment, notwithstanding the increasing number of tools and approaches reported in the landscape ecology literature. This paper presents an approach for assessing impacts on habitats on a local scale, where availability of species data is often limited, developed for an alpine valley in northern Italy. The perspective of the methodology is multiple scale and species-oriented, and provides both qualitative and quantitative definitions of impact significance. A qualitative decision model is used to assess ecological values in order to support land-use decisions at the local level. Building on recent studies in the same region, the methodology integrates various approaches, such as landscape graphs, object-oriented rule-based habitat assessment and expert knowledge. The results provide insights into future habitat loss and fragmentation caused by land-use changes, and aim at supporting decision-making in planning and suggesting possible ecological compensation. - Highlights: Black-Right-Pointing-Pointer Many environmental assessments inadequately consider habitat loss and fragmentation. Black-Right-Pointing-Pointer Species-perspective for defining habitat quality and connectivity is claimed. Black-Right-Pointing-Pointer Species-based tools are difficult to be applied with limited availability of data. Black-Right-Pointing-Pointer We propose a species-oriented and multiple scale-based qualitative approach. Black-Right-Pointing-Pointer Advantages include being species-oriented and providing value-based information.

Scolozzi, Rocco, E-mail: rocco.scolozzi@fmach.it [Sustainable Agro-ecosystems and Bioresources Department, IASMA Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele all& #x27; Adige, (Italy); Geneletti, Davide, E-mail: geneletti@ing.unitn.it [Department of Civil and Environmental Engineering, University of Trento, Trento (Italy)

2012-09-15T23:59:59.000Z

225

A Comparison of Simulated Cloud Radar Output from the Multiscale Modeling Framework Global Climate Model with CloudSat Cloud Radar Observations  

Science Conference Proceedings (OSTI)

Over the last few years a new type of global climate model (GCM) has emerged in which a cloud-resolving model is embedded into each grid cell of a GCM. This new approach is frequently called a multiscale modeling framework (MMF) or superparameterization. In this article we present a comparison of MMF output with radar observations from the NASA CloudSat mission, which uses a near-nadir-pointing millimeter-wavelength radar to probe the vertical structure of clouds and precipitation. We account for radar detection limits by simulating the 94 GHz radar reflectivity that CloudSat would observe from the high-resolution cloud-resolving model output produced by the MMF. Overall, the MMF does a good job of reproducing the broad pattern of tropical convergence zones, subtropical belts, and midlatitude storm tracks, as well as their changes in position with the annual solar cycle. Nonetheless, the comparison also reveals a number of model shortfalls including (1) excessive hydrometeor coverage at all altitudes over many convectively active regions, (2) a lack of low-level hydrometeors over all subtropical oceanic basins, (3) excessive low-level hydrometeor coverage (principally precipitating hydrometeors) in the midlatitude storm tracks of both hemispheres during the summer season (in each hemisphere), and (4) a thin band of low-level hydrometeors in the Southern Hemisphere of the central (and at times eastern and western) Pacific in the MMF, which is not observed by CloudSat. This band resembles a second much weaker ITCZ but is restricted to low levels.

Marchand, Roger T.; Haynes, J. M.; Mace, Gerald G.; Ackerman, Thomas P.; Stephens, Graeme L.

2009-01-13T23:59:59.000Z

226

Characteristics of the RAW Filtered Leapfrog Time-stepping Scheme in the Ocean General Circulation Model  

Science Conference Proceedings (OSTI)

The Robert-Asselin-Williams (RAW) filtered leapfrog scheme is implemented and tested in the Taiwan multi-scale community ocean model (TIMCOM). The characteristics of the RAW filter are carefully examined through two benchmark tests (the classical ...

Chih-Chieh Young; Yu-Chiao Liang; Yu-Heng Tseng; Chun-Hoe Chow

227

Multi-scale Membrane Design  

Science Conference Proceedings (OSTI)

Ionic Solid Oxides for High Temperature Optical Gas Sensing in Fossil Fuel Based Power Plants · Mitigation of Chromium Poisoning in Solid Oxide Fuel Cell

228

IRF: Information Retrieval Framework  

Science Conference Proceedings (OSTI)

is a freely available object-oriented framework for information retrieval (IR) applications. A framework is software which ...

229

A General Framework for Convective Trigger Functions  

Science Conference Proceedings (OSTI)

A general framework for the trigger function used in convective parameterization routines in mesoscale models is proposed. The framework is based on the diagnosis of the accessibility of potential buoyant energy. Specifically, the trigger ...

Robert F. Rogers; J. M. Fritsch

1996-11-01T23:59:59.000Z

230

Framework Materials  

Science Conference Proceedings (OSTI)

... C o u nts 300 ... When you know the wrong answer • When you want to quickly test a model against 1000s of data sets • When ...

2013-06-07T23:59:59.000Z

231

Modeling the Dynamics of Desakota Regions: Global - Local Nexus in the Taipei Metropolitan Area  

E-Print Network (OSTI)

Since the 1970s, Asia has experienced rapid urbanization processes, which are distinct from U.S. society, and the direction of Asian urbanization is more strongly affected by economic globalization. The desakota model, proposed by McGee and Ginsburg in 1991, focuses on how internal domestic and local forces drive the specific rural-urban transformation in Asia. However, the McGee-Ginsburg model does not emphasize the importance of globalization on Asian urbanization. To fill the gap, this study develops a GIS-based CA framework based on the desakota model to not only simulate the unique urbanization processes in Asia but also integrate the influence of globalization into Asian urban dynamics. Three approaches are developed in the CA simulation: 1) physical constraints and land-use classification from remotely sensed images in 1993, 2000, and 2008, are incorporated into micro-scale transformation; 2) population dynamics, shifts of economic activities, and foreign direct investment (FDIs), a representative of the impact of globalization, are applied for multi-scale interconnection; 3) the Monte Carlo mechanism is finally introduced to combine the above two approaches and implement the simulation process. The Taipei metropolitan area, a rapid urbanizing region that highly interacts with the global economy in Asia, is chosen to examine this model. The CA simulation model establishes a strong interaction between FDIs, an indicator representing impacts of globalization, and the dazzling Asian urban model. The combination of multi-scale economic factors and micro-scale land-use transformation also reveals how urban growth of the Taipei metropolis in recent years fits the characterization of the desakota model, and how desakota regions, the growth generators, interact with city cores. As a result, the research not only successfully links the influence of globalization with the desakota model and simulates urban dynamics of Asian cities but also provides scenarios of different FDI inputs for governments to better handle urban growth with global impacts under the deep economic recession since 2007.

Wu, Bing-Sheng

2009-08-01T23:59:59.000Z

232

NIST Cybersecurity Framework - DRAFT Framework Glossary  

Science Conference Proceedings (OSTI)

DRAFT - Framework Glossary Term Draft Definition Category The logical subdivision of a function; one or more categories comprise a function. ...

2013-06-28T23:59:59.000Z

233

The Relevance of Non-Generic Events in Scale Space Models  

Science Conference Proceedings (OSTI)

In order to investigate the deep structure of Gaussian scale space images, one needs to understand the behaviour of spatial critical points under the influence of blurring. We show how the mathematical framework of catastrophe theory can be used to describe ... Keywords: catastrophe theory, critical points, deep structure, multi-scale segmentation, scale space, topology

Arjan Kuijper; Luc M. J. Florack

2004-04-01T23:59:59.000Z

234

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

1 ? 10 9 N/m 2 ) GRB Gamma-Ray Bursts HP High-Pressure Itransients, namely, gamma-ray bursts (GRBs) [18]. Although

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

235

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

in a composite wind turbine rotor blade," Structural Healthdetection in composite wind turbine blades," Journal offor structural monitoring of wind turbine rotor blades," in

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

236

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

in a composite wind turbine rotor blade," Structural Healthmonitoring of wind turbine rotor blades," in progress 2013.in a composite wind turbine rotor blade." The dissertation

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

237

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

blade design that included a carbon fiber spar cap, with athe rotor blade’s carbon fiber spar cap, taking advantage ofpaths that lay along the carbon fiber spar cap A(spar). The

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

238

Oak Ridge Integrated Field-Scale Research Challenge:Task D -Multi-Process and Multi-Scale Modeling and Data Analysis  

SciTech Connect

The task objectives are: (1) Gain an improved understanding of hydrologic, geochemical and biological processes and their interactions at relevant time and space scales; and (2) Develop practical, site-independent tools for evaluating effects of natural and engineered processes on long-term performance.

Jack Parker

2007-04-19T23:59:59.000Z

239

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

at the Bridge Maintenance, Safety, Management and Life-Cycleat the Bridge Maintenance, Safety, Management and Life-Cycleat the Bridge Maintenance, Safety, Management and Life-Cycle

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

240

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

data interrogation. Wireless operation is enabled by use ofwireless active sensing platform (WASP) trades low-power operationfor operation with a dedicated power supply. The Wireless

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

Test Program," in ASME Wind Energy Symposium , 2004. H. J.Turbine," in 2002 ASME Wind Energy Symposium , 2002, pp.turbine," in 2001 ASME Wind Energy Symposium , 2001, pp.

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

242

A Predictive Model of Fragmentation using Adaptive Mesh Refinement and a Hierarchical Material Model  

Science Conference Proceedings (OSTI)

Fragmentation is a fundamental material process that naturally spans spatial scales from microscopic to macroscopic. We developed a mathematical framework using an innovative combination of hierarchical material modeling (HMM) and adaptive mesh refinement (AMR) to connect the continuum to microstructural regimes. This framework has been implemented in a new multi-physics, multi-scale, 3D simulation code, NIF ALE-AMR. New multi-material volume fraction and interface reconstruction algorithms were developed for this new code, which is leading the world effort in hydrodynamic simulations that combine AMR with ALE (Arbitrary Lagrangian-Eulerian) techniques. The interface reconstruction algorithm is also used to produce fragments following material failure. In general, the material strength and failure models have history vector components that must be advected along with other properties of the mesh during remap stage of the ALE hydrodynamics. The fragmentation models are validated against an electromagnetically driven expanding ring experiment and dedicated laser-based fragmentation experiments conducted at the Jupiter Laser Facility. As part of the exit plan, the NIF ALE-AMR code was applied to a number of fragmentation problems of interest to the National Ignition Facility (NIF). One example shows the added benefit of multi-material ALE-AMR that relaxes the requirement that material boundaries must be along mesh boundaries.

Koniges, A E; Masters, N D; Fisher, A C; Anderson, R W; Eder, D C; Benson, D; Kaiser, T B; Gunney, B T; Wang, P; Maddox, B R; Hansen, J F; Kalantar, D H; Dixit, P; Jarmakani, H; Meyers, M A

2009-03-03T23:59:59.000Z

243

The FRESCO Framework: An Overview  

E-Print Network (OSTI)

The dynamic composition of existing services into new services is at the core of service-oriented computing. The objective of FRESCO (Foundational Research on Service Composition) is to develop a framework that service providers can use in order to model, develop, and execute composite services. The FRESCO framework will include conceptual tools, such as models for service composition and aggregation. The framework will also include technology elements, such as an integrated development environment and specific components of the infrastructure for service execution. A methodology will be given for the use of the FRESCO framework in the development of composite service solutions. In this paper, we describe the main aspects of the approach to service composition adopted in FRESCO. 1.

Giacomo Piccinelli; Christian Zirpins; Winfried Lamersdorf

2003-01-01T23:59:59.000Z

244

Development and Demonstration of a Modeling Framework for Assessing the Efficacy of Using Mine Water for Thermoelectric Power Generation  

SciTech Connect

Thermoelectric power plants use large volumes of water for condenser cooling and other plant operations. Traditionally, this water has been withdrawn from the cleanest water available in streams and rivers. However, as demand for electrical power increases it places increasing demands on freshwater resources resulting in conflicts with other off stream water users. In July 2002, NETL and the Governor of Pennsylvania called for the use of water from abandoned mines to replace our reliance on the diminishing and sometimes over allocated surface water resource. In previous studies the National Mine Land Reclamation Center (NMLRC) at West Virginia University has demonstrated that mine water has the potential to reduce the capital cost of acquiring cooling water while at the same time improving the efficiency of the cooling process due to the constant water temperatures associated with deep mine discharges. The objectives of this project were to develop and demonstrate a user-friendly computer based design aid for assessing the costs, technical and regulatory aspects and potential environmental benefits for using mine water for thermoelectric generation. The framework provides a systematic process for evaluating the hydrologic, chemical, engineering and environmental factors to be considered in using mine water as an alternative to traditional freshwater supply. A field investigation and case study was conducted for the proposed 300 MW Beech Hollow Power Plant located in Champion, Pennsylvania. The field study based on previous research conducted by NMLRC identified mine water sources sufficient to reliably supply the 2-3,000gpm water supply requirement of Beech Hollow. A water collection, transportation and treatment system was designed around this facility. Using this case study a computer based design aid applicable to large industrial water users was developed utilizing water collection and handling principals derived in the field investigation and during previous studies of mine water and power plant cooling. Visual basic software was used to create general information/evaluation modules for a range of power plant water needs that were tested/verified against the Beech Hollow project. The program allows for consideration of blending mine water as needed as well as considering potential thermal and environmental benefits that can be derived from using constant temperature mine water. Users input mine water flow, quality, distance to source, elevations to determine collection, transport and treatment system design criteria. The program also evaluates low flow volumes and sustainable yields for various sources. All modules have been integrated into a seamless user friendly computer design aid and user's manual for evaluating the capital and operating costs of mine water use. The framework will facilitate the use of mine water for thermoelectric generation, reduce demand on freshwater resources and result in environmental benefits from reduced emissions and abated mine discharges.

None

2010-03-01T23:59:59.000Z

245

Estimating catchment-scale impacts of wildfire on sediment and nutrient loads using the E2 catchment modelling framework  

Science Conference Proceedings (OSTI)

Approximately 1.3 million ha of forested and agricultural land in south-eastern Australia was burnt by wildfires in early 2003. This paper describes a modelling process to assess the impacts of the fires on the quality of receiving waters and river systems ... Keywords: Catchment modelling, E2, Nutrient loads, Sediment loads, Water quality, Wildfire

Paul M. Feikema; Gary J. Sheridan; Robert M. Argent; Patrick N. J. Lane; Rodger B. Grayson

2011-07-01T23:59:59.000Z

246

Autonomic load-testing framework  

Science Conference Proceedings (OSTI)

In this paper, we present a method for performance testing of transactional systems. The methods models the system under test, finds the software and hardware bottlenecks and generate the workloads that saturate them. The framework is autonomic, the ... Keywords: autonomic system, performance models, performance testing, stress testing

Cornel Barna; Marin Litoiu; Hamoun Ghanbari

2011-06-01T23:59:59.000Z

247

The Sensitivity of Latent Heat Flux to Changes in the Radiative Forcing: A Framework for Comparing Models and Observations  

Science Conference Proceedings (OSTI)

A climate model must include an accurate surface physics scheme in order to examine the interactions between the land and atmosphere. Given an increase in the surface radiative forcing, the sensitivity of latent heat flux to available energy ...

Jonathan M. Winter; Elfatih A. B. Eltahir

2010-05-01T23:59:59.000Z

248

Physics-Based Stress Corrosion Cracking Component Reliability Model cast in an R7-Compatible Cumulative Damage Framework  

SciTech Connect

This is a working report drafted under the Risk-Informed Safety Margin Characterization pathway of the Light Water Reactor Sustainability Program, describing statistical models of passives component reliabilities.

Unwin, Stephen D.; Lowry, Peter P.; Layton, Robert F.; Toloczko, Mychailo B.; Johnson, Kenneth I.; Sanborn, Scott E.

2011-07-01T23:59:59.000Z

249

Simulation of Cloud Microphysical and Chemical Processes Using a Multicomponent Framework. Part I: Description of the Microphysical Model  

Science Conference Proceedings (OSTI)

A detailed microphysical and chemical cloud model has been developed to investigate the redistribution of atmospheric trace substances through cloud processes. A multicomponent categorization scheme is used to group cloud particles into different ...

Jen-Ping Chen; Dennis Lamb

1994-09-01T23:59:59.000Z

250

Modeling the Atmospheric Convective Boundary Layer within a Zero-Order Jump Approach: An Extended Theoretical Framework  

Science Conference Proceedings (OSTI)

The paper presents an extended theoretical background for applied modeling of the atmospheric convective boundary layer within the so-called zero-order jump approach, which implies vertical homogeneity of meteorological fields in the bulk of ...

Evgeni Fedorovich

1995-09-01T23:59:59.000Z

251

The Sensitivity of Latent Heat Flux to Changes in the Radiative Forcing: A Framework for Comparing Models and Observations  

E-Print Network (OSTI)

A climate model must include an accurate surface physics scheme in order to examine the interactions between the land and atmosphere. Given an increase in the surface radiative forcing, the sensitivity of latent heat flux ...

Winter, Jonathan (Jonathan Mark)

252

Radial flow has little effect on clusterization at intermediate energies in the framework of the Lattice Gas Model  

E-Print Network (OSTI)

The Lattice Gas Model was extended to incorporate the effect of radial flow. Contrary to popular belief, radial flow has little effect on the clusterization process in intermediate energy heavy-ion collisions except adding an ordered motion to the particles in the fragmentation source. We compared the results from the lattice gas model with and without radial flow to experimental data. We found that charge yields from central collisions are not significantly affected by inclusion of any reasonable radial flow.

C. B. Das; L. Shi; S. Das Gupta

2004-07-20T23:59:59.000Z

253

Commercial Implementation of Model-Based Manufacturing of Nanostructured Metals  

SciTech Connect

Computational modeling is an essential tool for commercial production of nanostructured metals. Strength is limited by imperfections at the high strength levels that are achievable in nanostructured metals. Processing to achieve homogeneity at the micro- and nano-scales is critical. Manufacturing of nanostructured metals is intrinsically a multi-scale problem. Manufacturing of nanostructured metal products requires computer control, monitoring and modeling. Large scale manufacturing of bulk nanostructured metals by Severe Plastic Deformation is a multi-scale problem. Computational modeling at all scales is essential. Multiple scales of modeling must be integrated to predict and control nanostructural, microstructural, macrostructural product characteristics and production processes.

Lowe, Terry C. [Los Alamos National Laboratory

2012-07-24T23:59:59.000Z

254

Variable Density Flow Modeling for Simulation Framework for Regional Geologic CO{sub 2} Storage Along Arches Province of Midwestern United States  

SciTech Connect

The Arches Province in the Midwestern U.S. has been identified as a major area for carbon dioxide (CO{sub 2}) storage applications because of the intersection of Mt. Simon sandstone reservoir thickness and permeability. To better understand large-scale CO{sub 2} storage infrastructure requirements in the Arches Province, variable density scoping level modeling was completed. Three main tasks were completed for the variable density modeling: Single-phase, variable density groundwater flow modeling; Scoping level multi-phase simulations; and Preliminary basin-scale multi-phase simulations. The variable density modeling task was successful in evaluating appropriate input data for the Arches Province numerical simulations. Data from the geocellular model developed earlier in the project were translated into preliminary numerical models. These models were calibrated to observed conditions in the Mt. Simon, suggesting a suitable geologic depiction of the system. The initial models were used to assess boundary conditions, calibrate to reservoir conditions, examine grid dimensions, evaluate upscaling items, and develop regional storage field scenarios. The task also provided practical information on items related to CO{sub 2} storage applications in the Arches Province such as pressure buildup estimates, well spacing limitations, and injection field arrangements. The Arches Simulation project is a three-year effort and part of the United States Department of Energy (U.S. DOE)/National Energy Technology Laboratory (NETL) program on innovative and advanced technologies and protocols for monitoring/verification/accounting (MVA), simulation, and risk assessment of CO{sub 2} sequestration in geologic formations. The overall objective of the project is to develop a simulation framework for regional geologic CO{sub 2} storage infrastructure along the Arches Province of the Midwestern U.S.

Joel Sminchak

2011-09-30T23:59:59.000Z

255

Role of Modeling When Designing for Absolute Energy Use Intensity Requirements in a Design-Build Framework: Preprint  

SciTech Connect

The Research Support Facility was designed to use half the energy of an equivalent minimally code-compliant building, and to produce as much renewable energy as it consumes on an annual basis. These energy goals and their substantiation through simulation were explicitly included in the project's fixed firm price design-build contract. The energy model had to be continuously updated during the design process and to match the final building as-built to the greatest degree possible. Computer modeling played a key role throughout the design process and in verifying that the contractual energy goals would be met within the specified budget. The main tool was a whole building energy simulation program. Other models were used to provide more detail or to complement the whole building simulation tool. Results from these specialized models were fed back into the main whole building simulation tool to provide the most accurate possible inputs for annual simulations. This paper will detail the models used in the design process and how they informed important program and design decisions on the path from preliminary design to the completed building.

Hirsch, A.; Pless, S.; Guglielmetti, R.; Torcellini, P. A.; Okada, D.; Antia, P.

2011-03-01T23:59:59.000Z

256

Role of Modeling When Designing for Absolute Energy Use Intensity Requirements in a Design-Build Framework: Preprint  

SciTech Connect

The Research Support Facility was designed to use half the energy of an equivalent minimally code-compliant building, and to produce as much renewable energy as it consumes on an annual basis. These energy goals and their substantiation through simulation were explicitly included in the project's fixed firm price design-build contract. The energy model had to be continuously updated during the design process and to match the final building as-built to the greatest degree possible. Computer modeling played a key role throughout the design process and in verifying that the contractual energy goals would be met within the specified budget. The main tool was a whole building energy simulation program. Other models were used to provide more detail or to complement the whole building simulation tool. Results from these specialized models were fed back into the main whole building simulation tool to provide the most accurate possible inputs for annual simulations. This paper will detail the models used in the design process and how they informed important program and design decisions on the path from preliminary design to the completed building.

Hirsch, A.; Pless, S.; Guglielmetti, R.; Torcellini, P. A.; Okada, D.; Antia, P.

2011-03-01T23:59:59.000Z

257

Multimedia prototype of a bilingual model within technology based learning environment: an implementation of a mathematics learning framework  

Science Conference Proceedings (OSTI)

In response to the current globalization in the educational arena, and to the new policy of change in the medium of instruction for teaching mathematics and science in English as implemented by the Malaysian Government in 2003, we introduce the e-learning ... Keywords: bilingual model, multimedia prototype, technology based learning environment

Zur’aini Dahlan; Noraimi Shafie; Rozeha A. Rashid

2006-09-01T23:59:59.000Z

258

Review: Interpretive review of conceptual frameworks and research models that inform Australia's agricultural vulnerability to climate change  

Science Conference Proceedings (OSTI)

Agriculture in Australia is highly vulnerable to climate change. Understanding the sector's vulnerability is critical to developing immediate policy for the future of the agricultural industries and their communities. This review aims to identify research ... Keywords: Biophysical models, Contextual vulnerability, Outcome vulnerability

Leonie J. Pearson; Rohan Nelsonc; Steve Crimp; Jenny Langridge

2011-02-01T23:59:59.000Z

259

A Signal-Processing Framework for Reflection--Part 2: Analytic Formulae for Common Lighting and BRDF Models  

E-Print Network (OSTI)

a homogeneous convex curved surface under distant illumination. The notion of reflection as convolution harmonic coefficients of many common lighting and BRDF models. In this way, we explore the implications the reflected light field from a homogeneous convex curved surface under distant illumination. Under

Stanford University

260

An integrative approach to requirements analysis: How task models support requirements reuse in a user-centric design framework  

Science Conference Proceedings (OSTI)

Many software systems fail to address their intended purpose because of a lack of user involvement and requirements deficiencies. This paper discusses the elaboration of a requirements-analysis process that integrates a critical-parameter-based approach ... Keywords: Critical parameters, Requirements engineering, Reuse, Task modeling

Cyril Montabert; D. Scott McCrickard; Woodrow W. Winchester; Manuel A. Pérez-Quiñones

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Yrast state band of even 120-130Te isotopes under the framework of interacting boson model -1  

E-Print Network (OSTI)

In this paper, nuclear structure of yrast state bands of even-even 120-130Te isotopes has been studied under the frame work of interacting boson model (IBM-1). The theoretical energy levels for Z=52, even N = 68-78 up to 12+ state have been obtained by using the MatLab 6.5 computer program. The ratio of the excitation energies of first 4+ and first 2+ excited states, R4/2, has been also calculated for those nuclei. The values of the parameters in the IBM-1 hamiltonian yield the best fit to the experimental energy spectrum. The results are compared with the most recent experimental values where an acceptable degree of agreement is achieved. Moreover, as a measure to quantify the evolution, we have studied the transition rate R of some of the low-lying quadrupole collective states in comparison to the available experimental data. In this paper, the properties of even 120-130Te isotopes have been considered to the U(5) transitional region of IBM-1.

I Hossain; Hewa Y Abdullah; I M Ahmed; J Islam

2013-10-10T23:59:59.000Z

262

Yrast state band of even 120-130Te isotopes under the framework of interacting boson model -1  

E-Print Network (OSTI)

In this paper, nuclear structure of yrast state bands of even-even 120-130Te isotopes has been studied under the frame work of interacting boson model (IBM-1). The theoretical energy levels for Z=52, even N = 68-78 up to 12+ state have been obtained by using the MatLab 6.5 computer program. The ratio of the excitation energies of first 4+ and first 2+ excited states, R4/2, has been also calculated for those nuclei. The values of the parameters in the IBM-1 hamiltonian yield the best fit to the experimental energy spectrum. The results are compared with the most recent experimental values where an acceptable degree of agreement is achieved. Moreover, as a measure to quantify the evolution, we have studied the transition rate R of some of the low-lying quadrupole collective states in comparison to the available experimental data. In this paper, the properties of even 120-130Te isotopes have been considered to the U(5) transitional region of IBM-1.

Hossain, I; Ahmed, I M; Islam, J

2013-01-01T23:59:59.000Z

263

Watershed Mercury Loading Framework  

Science Conference Proceedings (OSTI)

This report explains and illustrates a simplified stochastic framework, the Watershed Mercury Loading Framework, for organizing and framing site-specific knowledge and information on mercury loading to waterbodies. The framework permits explicit treatment of data uncertainties. This report will be useful to EPRI members, state and federal regulatory agencies, and watershed stakeholders concerned with mercury-related human and ecological health risk.

2003-05-23T23:59:59.000Z

264

Growth impact of hydrodynamic dispersion in a Couette-Taylor bioreactor  

Science Conference Proceedings (OSTI)

The development of a distributed parameter model of microalgae growth is presented. Two modelling frameworks for photo-bioreactor modelling, Eulerian and Lagrangian, are discussed and the complications residing in the multi-scale nature of transport ... Keywords: Boundary value problem, Distributed parameter system, Multi-scale modelling, Photosynthetic factory, Random walk

ŠTpáN Papá?Ek; VáClav ŠTumbauer; Dalibor ŠTys; Karel Petera; Ctirad Matonoha

2011-10-01T23:59:59.000Z

265

Reference framework for E-participation projects  

Science Conference Proceedings (OSTI)

Accommodating the various requirements from distinct perspectives in e-participation calls for a holistic engineering approach for e-participation systems analysis and design. This paper presents research results towards a reference framework for e-participation ... Keywords: E-participation, reference framework, reference model

Sabrina Scherer; Maria A. Wimmer

2011-08-01T23:59:59.000Z

266

A Risk Minimization Framework for Information Retrieval  

E-Print Network (OSTI)

A Risk Minimization Framework for Information Retrieval ChengXiang Zhai a John Lafferty b Carnegie Mellon University Abstract This paper presents a probabilistic information retrieval framework of decades of research in information retrieval, many different information retrieval models have been

Lafferty, John

267

A Risk Minimization Framework for Information Retrieval  

E-Print Network (OSTI)

A Risk Minimization Framework for Information Retrieval ChengXiang Zhai a John Lafferty b a University Abstract This paper presents a probabilistic information retrieval framework in which in information retrieval, many different information retrieval models have been proposed and studied. While

Lafferty, John

268

Distributed Resource Integration Framework  

Science Conference Proceedings (OSTI)

This report defines a framework for assessing current issues and considerations associated with the deployment and operation of distributed resources. The framework is a guide that can assist utility personnel, distributed resource owners, and other stakeholders in planning integration projects and in relating different integration projects to one another. The framework provides a structured organization of the various elements associated with distributed resource integration, including regulatory, busin...

2009-12-23T23:59:59.000Z

269

IBRD Operational Decision Framework  

SciTech Connect

The IBRD Operational Decision Framework in this document is an expansion of an emerging general risk management framework under development by an interagency working group. It provides the level of detail necessary to develop a general Consequence Management Guidance Document for biological contamination remediation and restoration. It is the intent of this document to support both wide area and individual site remediation and restoration activities. This product was initiated as a portion of the IBRD Task 1 Systems Analysis to aid in identification of wide area remediation and restoration shortcomings and gaps. The draft interagency general risk management framework was used as the basis for the analysis. The initial Task 1 analysis document expanded the draft interagency framework to a higher level of resolution, building on both the logic structure and the accompanying text explanations. It was then employed in a qualitative manner to identify responsible agencies, data requirements, tool requirements, and current capabilities for each decision and task. This resulted in identifying shortcomings and gaps needing resolution. Several meetings of a joint LLNL/SNL working group reviewed and approved the initial content of this analysis. At the conclusion of Task 1, work continued on the expanded framework to generate this Operational Decision Framework which is consistent with the existing interagency general risk management framework. A large LLNL task group met repeatedly over a three-month period to develop the expanded framework, coordinate the framework with the biological remediation checklist, and synchronize the logic with the Consequence Management Plan table of contents. The expanded framework was briefed at a large table top exercise reviewing the interagency risk management framework. This exercise had representation from major US metropolitan areas as well as national agencies. This product received positive comments from the participants. Upon completion of the Operational Decision Framework, another joint LLNL/SNL working group conducted a day-long review. Identified modifications were made to the document, resulting in the included product.

Greenwalt, R; Hibbard, W; Raber, E; Carlsen, T; Folks, K; MacQueen, D; Mancieri, S; Bunt, T; Richards, J; Hirabayashi-Dethier, J

2010-11-12T23:59:59.000Z

270

NIST Cyber Security Framework  

Science Conference Proceedings (OSTI)

Page 1. NIST Cyber Security Framework ISA-62443-2-1 :2009 ISA-62443-2-1 (Ed. 2, D2E8 ... Page 2. Security NIST Cyber ...

2013-12-13T23:59:59.000Z

271

On D{yields}X{sub u}l{sup +}l{sup -} within the Standard Model and frameworks like the littlest Higgs model with T Parity  

SciTech Connect

The D{yields}X{sub u}l{sup +}l{sup -} transitions -- branching ratios, forward-backward (FB) asymmetry A{sub FB}{sup c}, the CP asymmetry A{sub CP}{sup c}, and the CP asymmetry in the forward-backward asymmetry A{sub FB}{sup CP} -- have two sources: for D{sup {+-}}they represent a pure {Delta}C=1 and {Delta}Q=0 current interaction whereas neutral D mesons can also communicate via their antihadron. Standard model (SM) contributions to BR(D{yields}X{sub u}l{sup +}l{sup -}) come primarily from long distance dynamics, which overshadow short distance contributions by several orders of magnitude; still they fall much below the present upper experimental bounds. Even the SM contributions to A{sub FB}{sup c}, A{sub CP}{sup c}, and A{sub FB}{sup CP} are tiny, quite unlike in beauty hadrons. The branching ratios are hardly dented by contributions from the littlest Higgs models with T parity (LHT) even in the short distance regime, let alone in the SM long distances dynamics. Yet the asymmetries A{sub FB}{sup c}, A{sub CP}{sup c}, and A{sub FB}{sup CP} in these new physics models can be enhanced over SM predictions, as they arise purely from short distance dynamics; this can occur, in particular, for A{sub FB}{sup c} and A{sub FB}{sup CP}, which get enhanced by orders of magnitudes. Even such enhancements hardly reach absolute sizes for observable experimental effects for A{sub FB}{sup c} and A{sub CP}{sup c}. However, LHT contributions to A{sub FB}{sup CP} could be measured in experiments like the LHCb and the SuperB Collaboration. These results lead us to draw further conclusions on flavor-changing neutral-current interactions within LHT-like models through some simple scaling arguments that encapsulate the essence of flavor dynamics in and beyond the standard model.

Paul, Ayan; Bigi, Ikaros I.; Recksiegel, Stefan [Department of Physics, University of Notre Dame du Lac, Notre Dame, Indiana 46556 (United States); Physik Department, Technische Universitaet Muenchen, D-85748 Garching (Germany)

2011-06-01T23:59:59.000Z

272

A hierarchical systems knowledge representation framework  

E-Print Network (OSTI)

We present the design and implementation of a framework for storing and analysing knowledge about engineering systems. The hierarchical entity-relation-attribute model is useful for large data sets, in which it can abstract ...

Sylvester, Igor Andrade

2007-01-01T23:59:59.000Z

273

Deriving a Framework for Estimating Individual Tree Measurements with Lidar for Use in the TAMBEETLE Southern Pine Beetle Infestation Growth Model  

E-Print Network (OSTI)

The overall goal of this study was to develop a framework for using airborne lidar to derive inputs for the SPB infestation growth model TAMBEETLE. The specific objectives were (1) to estimate individual tree characteristics of XY location, individual bole height (IBH), diameter at breast height (DBH), length of crown (CrHT), and age for use in TAMBEETLE; (2) to estimate individual tree age using lidar-estimated height and site index provided by the United States Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Soil Survey Geographic Database (SSURGO); and (3) to compare TAMBEETLE simulation results using field measurements and lidarderived measurements as inputs. Diameter at breast height, individual bole height, and crown length were estimated using lidar with an error for mean measurements at plot level of 0.16cm, 0.19m, and 1.07m, respectively. These errors were within root mean square error (RMSE) for other studies at the study site. Age was estimated using the site index provided by SSURGO and the site index curves created for the study area with an RMSE of 4.8 years for mean plot age. Underestimation of tree height by lidar and error in the site index curve explained 91% of the error in mean plot age. TAMBEETLE was used to compare spot growth between a lidar-derived forest map and a forest map generated by TAMBEETLE, based on sample plot characteristics. The lidar-derived forest performed comparably to the TAMBEETLE generated forest. Using lidar to map forests can provide the large spatial extents of the TAMBEETLE generated forest while maintaining the spatially explicit forest characteristics, which were previously only available through field measurements.

Stukey, Jared D.

2009-12-01T23:59:59.000Z

274

Demonstration of a Novel, Integrated, Multi-Scale Procedure for High-Resolution 3D Reservoir Characterization and Improved CO2-EOR/Sequestration Management, SACROC Unit  

SciTech Connect

The primary goal of this project was to demonstrate a new and novel approach for high resolution, 3D reservoir characterization that can enable better management of CO{sub 2} enhanced oil recovery (EOR) projects and, looking to the future, carbon sequestration projects. The approach adopted has been the subject of previous research by the DOE and others, and relies primarily upon data-mining and advanced pattern recognition approaches. This approach honors all reservoir characterization data collected, but accepts that our understanding of how these measurements relate to the information of most interest, such as how porosity and permeability vary over a reservoir volume, is imperfect. Ideally the data needed for such an approach includes surface seismic to provide the greatest amount of data over the entire reservoir volume of interest, crosswell seismic to fill the resolution gap between surface seismic and wellbore-scale measurements, geophysical well logs to provide the vertical resolution sought, and core data to provide the tie to the information of most interest. These data are combined via a series of one or more relational models to enable, in its most successful application, the prediction of porosity and permeability on a vertical resolution similar to logs at each surface seismic trace location. In this project, the procedure was applied to the giant (and highly complex) SACROC unit of the Permian basin in West Texas, one of the world's largest CO{sub 2}-EOR projects and a potentially world-class geologic sequestration site. Due to operational scheduling considerations on the part of the operator of the field, the crosswell data was not obtained during the period of project performance (it is currently being collected however as part of another DOE project). This compromised the utility of the surface seismic data for the project due to the resolution gap between it and the geophysical well logs. An alternative approach was adopted that utilized a relational model to predict porosity and permeability profiles from well logs at each well location, and a 3D geostatistical variogram to generate the reservoir characterization over the reservoir volume of interest. A reservoir simulation model was built based upon this characterization and history-matched without making significant changes to it, thus validating the procedure. While not the same procedure as originally planned, the procedure ultimately employed proved successful and demonstrated that the general concepts proposed (i.e., data mining and advanced pattern recognition methods) have the flexibility to achieve the reservoir characterization objectives sought even with imperfect or incomplete data.

Scott R. Reeves

2007-09-30T23:59:59.000Z

275

Realm Specific IP: Framework  

Science Conference Proceedings (OSTI)

This document examines the general framework of Realm Specific IP (RSIP). RSIP is intended as a alternative to NAT in which the end- to-end integrity of packets is maintained. We focus on implementation issues, deployment scenarios, and interaction ...

M. Borella; J. Lo; D. Grabelsky; G. Montenegro

2001-10-01T23:59:59.000Z

276

Grammatical framework web service  

Science Conference Proceedings (OSTI)

We present a web service for natural language parsing, prediction, generation, and translation using grammars in Portable Grammar Format (PGF), the target format of the Grammatical Framework (GF) grammar compiler. The web service implementation is open ...

Björn Bringert; Krasimir Angelov; Aarne Ranta

2009-04-01T23:59:59.000Z

277

A Warm-Bin–Cold-Bulk Hybrid Cloud Microphysical Model  

Science Conference Proceedings (OSTI)

This study describes a newly developed bin–bulk hybrid cloud microphysical model named MSSG-Bin, which has been implemented in the Multi-Scale Simulator for the Geoenvironment (MSSG). In the hybrid approach, a spectral bin scheme is used for ...

Ryo Onishi; Keiko Takahashi

2012-05-01T23:59:59.000Z

278

Multi-level agent-based modeling - Bibliography  

E-Print Network (OSTI)

This very short article aims to bring together the available bibliography on multi-level (or multi-layer, multi-perspective, multi-view, multi-scale, multi-resolution) agent-based modeling so that it is accessible to interested researchers.

Morvan, Gildas

2012-01-01T23:59:59.000Z

279

New Planning Framework  

Science Conference Proceedings (OSTI)

This report describes an investigation into how various regulatory, economic, and technical changes are likely to affect the framework for transmission planning. It begins with an overview of the Existing Planning Framework, structured along the lines of five key aspects that encompass the purview, role, and responsibilities of transmission planning. The report then explores seven scenarios (future states) of transformative change in the electricity industryranging from the greater penetration of wind ge...

2010-12-22T23:59:59.000Z

280

A Joint-Diffused Inpainting Model for Underexposure Image Preserving the Linear Geometric Structure  

Science Conference Proceedings (OSTI)

To restore the underexposure image, an illumination compensation inpainting model which employs the joint-diffused partial differential equations (PDEs) is proposed. Firstly, the novel model compensates the illumination effect in multi-scaled underexposure ... Keywords: illumination compensation, image inpainting, partial differential equation (PDE), quotient image (QI)

Jiying Wu; Qiuqi Ruan; Gaoyun An

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A Framework for Studying the Environmental Impact of Biofuel Policies.  

E-Print Network (OSTI)

??In this thesis I present a new framework for investigating the environmental im- pact of and optimal policies for biofuel production. The model captures the… (more)

Størkersen, Thea Charlotte

2012-01-01T23:59:59.000Z

282

Multi-Scale Reinforced Carbon Fiber Nanocomposites  

E-Print Network (OSTI)

Carbon fiber polymer composites are utilized in many industries including in commercial and military aircraft and space vehicles because of their lighter weight and superior strength compared to aluminum and steel. Due to the insulating nature of epoxy-based polymer composites and the dielectric breakdown of the epoxy, catastrophic failure may occur when subjected to high voltages (as in a lightning strike). The addition of carbon nanofibers and carbon nanotubes to the epoxy resin has the potential to improve electrical deficiencies and enhance mechanical characteristics, as well as add self-sensing and actuation capabilities to the original composite. The focus of the present research is to modify the epoxy in traditional carbon fiber composites through addition of carbon nanofibers. As a first step, this study aims to develop an effective technique to disperse carbon nanofibers in the epoxy using mechanical stirring along with sonication, and characterize cured composite samples of various nanomaterial concentrations by optical microscopy, and mechanical and electrical characterization. Once the dispersion procedure is finalized, the nanofibers must be aligned in a desired direction to maximize the extent to which they enhance the original composite. This is achieved by placing electrodes on opposite sides of the material to apply an electric field while the epoxy cures, as secondary bonding joins the aligned nanofibers together. The Vacuum Assisted Resin Transfer Molding (VARTM) process is currently used in industry and serves as a basis to add the modified epoxy resin to the carbon fiber fabric. Results will be tested and compared to a standard carbon fiber composite to optimize the overall procedure. With greater understanding and control of nanoparticles, it will be possible to design composites for specific applications in the not-so-distant future.

VanRooyen, Ainsley

2008-08-19T23:59:59.000Z

283

Multi-scale comparative spectral analysis of satellite total solar irradiance measurements from 2003 to 2013 reveals a planetary modulation of solar activity and its non-linear dependence on the 11-year solar cycle  

E-Print Network (OSTI)

Herein we adopt a multi-scale dynamical spectral analysis technique to compare and study the dynamical evolution of the harmonic components of the overlapping ACRIMSAT/ACRIM3, SOHO/VIRGO and SORCE/TIM total solar irradiance (TSI) records during 2003.15 to 2013.16 in solar cycles 23 and 24. The three TSI time series present highly correlated patterns. Significant power spectral peaks are common to these records and are observed at the following periods: 0.070 year, 0.097 year, 0.20 year, 0.25 year, 0.30-0.34 year, 0.39 year. Less certain spectral peaks occur at about 0.55 year, 0.60-0.65 year and 0.7-0.9 year. Four main frequency periods at 24.8 days (0.068 year), 27.3 days (0.075 year), at 34-35 days (0.093-0.096 year) and 36-38 days (0.099-0.104 year) characterize the solar rotation cycle. The amplitude of these oscillations, in particular of those with periods larger than 0.5 year, appears to be modulated by the 11-year solar cycle. Similar harmonics have been found in other solar indices. The observed periodicities are found highly coherent with the spring, orbital and synodic periods of Mercury, Venus, Earth and Jupiter. We conclude that solar activity is likely modulated by planetary gravitational and electromagnetic forces acting on the sun. The strength of the sun's response to planetary forcing depends non-linearly on the state of internal solar dynamics: planetary-sun coupling effects are enhanced during solar activity maxima and attenuated during minima.

Nicola Scafetta; Richard C. Willson

2013-11-26T23:59:59.000Z

284

Knowledge transfer frameworks  

Science Conference Proceedings (OSTI)

While theories abound concerning knowledge transfer in organisations, little empirical work has been undertaken to assess any possible relationship between repositories of knowledge and those responsible for the use of knowledge. This paper develops ... Keywords: hybrid approach, knowledge administration, knowledge management, knowledge storage, knowledge transfer framework

Sajjad M Jasimuddin; Nigel Connell; Jonathan H Klein

2012-05-01T23:59:59.000Z

285

A comparison of staggered solution schemes for coupled particle---continuum systems modeled with the Arlequin method  

Science Conference Proceedings (OSTI)

This contribution aims at a systematic investigation of staggered solution schemes for the computation of coupled domains having different resolutions in space, a problem frequently arising in multi-scale modeling of materials. To couple a standard finite ... Keywords: Atomistic---continuum coupling, Bridging domain method, Domain decomposition, Lagrange multipliers, Multiscale modeling

S. Pfaller; G. Possart; P. Steinmann; M. Rahimi; F. Müller-Plathe; M. C. Böhm

2012-05-01T23:59:59.000Z

286

Development and application of an integrated ecological modelling framework to analyze the impact of wastewater discharges on the ecological water quality of rivers  

Science Conference Proceedings (OSTI)

Modelling is an effective tool to investigate the ecological state of water resources. In developing countries, the impact of sanitation infrastructures (e.g. wastewater treatment plants) is typically assessed considering the achievement of legal physicochemical ... Keywords: Habitat suitability models, Information-theoretic approach, Integrated ecological modelling, MIKE 11, Multi-model inference

Javier E. Holguin-Gonzalez, Gert Everaert, Pieter Boets, Alberto Galvis, Peter L. M. Goethals

2013-10-01T23:59:59.000Z

287

Oriented Percolation in One-Dimensional 1/|x-y|^2 Percolation Models  

E-Print Network (OSTI)

We consider independent edge percolation models on Z, with edge occupation probabilities p_ = p if |x-y| = 1, 1 - exp{- beta / |x-y|^2} otherwise. We prove that oriented percolation occurs when beta > 1 provided p is chosen sufficiently close to 1, answering a question posed in [Commun. Math. Phys. 104, 547 (1986)]. The proof is based on multi-scale analysis.

D. H. U. Marchetti; V. Sidoravicius; M. E. Vares

2005-06-20T23:59:59.000Z

288

Climate Literacy Framework  

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

Climate Literacy Framework Print E-mail Climate Literacy Framework Print E-mail A Guide for Individuals and Communities The Essential Principles of Climate Science presents important information for individuals and communities to understand Earth's climate, impacts of climate change, and approaches for adapting and mitigating change. Principles in the guide can serve as discussion starters or launching points for scientific inquiry. The guide can also serve educators who teach climate science as part of their science curricula. Development of the guide began at a workshop sponsored by the National Oceanic and Atmospheric Administration (NOAA) and the American Association for the Advancement of Science (AAAS). Multiple science agencies, non-governmental organizations, and numerous individuals also contributed through extensive review and comment periods. Discussion at the National Science Foundation (NSF) and NOAA-sponsored Atmospheric Sciences and Climate Literacy workshop contributed substantially to the refinement of the document.

289

Using a Bayesian framework and global sensitivity analysis to identify strengths and weaknesses of two process-based models differing in representation of autotrophic respiration  

Science Conference Proceedings (OSTI)

Process-based models are powerful tools for sustainable and adaptive forest management. Bayesian statistics and global sensitivity analysis allow to reduce uncertainties in parameters and outputs, and they provide better insight of model behaviour. In ... Keywords: 3-PG, Bayesian calibration, Bayesian model comparison, Carbon cycle, Global sensitivity analysis, Morris screening, Net primary production, Respiration, Uncertainty analysis

F. Minunno; M. Van Oijen; D. R. Cameron; S. Cerasoli; J. S. Pereira; M. Tomé

2013-04-01T23:59:59.000Z

290

Preparation of functionalized zeolitic frameworks  

DOE Patents (OSTI)

The disclosure provides zeolitic frameworks for gas separation, gas storage, catalysis and sensors. More particularly the disclosure provides zeolitic frameworks (ZIFs). The ZIF of the disclosure comprises any number of transition metals or a homogenous transition metal composition.

Yaghi, Omar M; Hayashi, Hideki; Banerjee, Rahul; Park, Kyo Sung; Wang, Bo; Cote, Adrien P

2012-11-20T23:59:59.000Z

291

Automatically locating framework extension examples  

Science Conference Proceedings (OSTI)

Using and extending a framework is a challenging task whose difficulty is exacerbated by the poor documentation that generally comes with the framework. Even in the presence of documentation, developers often desire implementation examples for concrete ...

Barthélémy Dagenais; Harold Ossher

2008-11-01T23:59:59.000Z

292

Preparation of functionalized zeolitic frameworks  

DOE Patents (OSTI)

The disclosure provides zeolitic frameworks for gas separation, gas storage, catalysis and sensors. More particularly the disclosure provides zeolitic frameworks (ZIFs). The ZIF of the disclosure comprises any number of transition metals or a homogenous transition metal composition.

Yaghi, Omar M; Furukawa, Hiroyasu; Wang, Bo

2013-07-09T23:59:59.000Z

293

CIM-EARTH : Framework and case study.  

SciTech Connect

General equilibrium models have been used for decades to obtain insights into the economic implications of policies and decisions. Despite successes, however, these economic models have substantive limitations. Many of these limitations are due to computational and methodological constraints that can be overcome by leveraging recent advances in computer architecture, numerical methods, and economics research. Motivated by these considerations, we are developing a new modeling framework: the Community Integrated Model of Economic and Resource Trajectories for Humankind (CIM-EARTH). In this paper, we describe the key features of the CIM-EARTH framework and initial implementation, detail the model instance we use for studying the impacts of a carbon tax on international trade and the sensitivity of these impacts to assumptions on the rate of change in energy efficiency and labor productivity, and present results on the extent to which carbon leakage limits global reductions in emissions for some policy scenarios.

Elliott, J.; Foster, I.; Judd, K.; Moyer, E.; Munson, T.; Univ. of Chicago

2010-01-01T23:59:59.000Z

294

Flexible Framework for Building Energy Analysis: Preprint  

SciTech Connect

In the building energy research and advanced practitioner communities, building models are perturbed across large parameter spaces to assess energy and cost performance in the face of programmatic and economic constraints. This paper describes the OpenStudio software framework for performing such analyses.

Hale, E.; Macumber, D.; Weaver, E.; Shekhar, D.

2012-09-01T23:59:59.000Z

295

Nuclear Safety Regulatory Framework  

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

Department of Energy Department of Energy Nuclear Safety Regulatory Framework DOE's Nuclear Safety Enabling Legislation Regulatory Enforcement & Oversight Regulatory Governance Atomic Energy Act 1946 Atomic Energy Act 1954 Energy Reorganization Act 1974 DOE Act 1977 Authority and responsibility to regulate nuclear safety at DOE facilities 10 CFR 830 10 CFR 835 10 CFR 820 Regulatory Implementation Nuclear Safety Radiological Safety Procedural Rules ISMS-QA; Operating Experience; Metrics and Analysis Cross Cutting DOE Directives & Manuals DOE Standards Central Technical Authorities (CTA) Office of Health, Safety, and Security (HSS) Line Management SSO/ FAC Reps 48 CFR 970 48 CFR 952 Federal Acquisition Regulations External Oversight *Defense Nuclear Facility

296

A distributed framework for multi-risk assessment of natural hazards used to model the effects of forest fire on hydrology and sediment yield  

Science Conference Proceedings (OSTI)

Within the European Commission-funded MEDIGRID project, Grid computing technology is used to integrate various natural hazard models and data sets, maintained independently at different centres in Europe, into a single system, accessible to users over ... Keywords: Fire Spread Engine, GRID, Integrated modelling, SHETRAN, Soil erosion

C. Isabella Bovolo; Simon J. Abele; James C. Bathurst; David Caballero; Marek Ciglan; George Eftichidis; Branislav Simo

2009-05-01T23:59:59.000Z

297

Conceptual Model Summary Report Simulation Framework for Regional Geologic CO{sub 2} Storage Along Arches Province of Midwestern United States  

Science Conference Proceedings (OSTI)

A conceptual model was developed for the Arches Province that integrates geologic and hydrologic information on the Eau Claire and Mt. Simon formations into a geocellular model. The conceptual model describes the geologic setting, stratigraphy, geologic structures, hydrologic features, and distribution of key hydraulic parameters. The conceptual model is focused on the Mt. Simon sandstone and Eau Claire formations. The geocellular model depicts the parameters and conditions in a numerical array that may be imported into the numerical simulations of carbon dioxide (CO{sub 2}) storage. Geophysical well logs, rock samples, drilling logs, geotechnical test results, and reservoir tests were evaluated for a 500,000 km{sup 2} study area centered on the Arches Province. The geologic and hydraulic data were integrated into a three-dimensional (3D) grid of porosity and permeability, which are key parameters regarding fluid flow and pressure buildup due to CO{sub 2} injection. Permeability data were corrected in locations where reservoir tests have been performed in Mt. Simon injection wells. The final geocellular model covers an area of 600 km by 600 km centered on the Arches Province. The geocellular model includes a total of 24,500,000 cells representing estimated porosity and permeability distribution. CO{sub 2} injection scenarios were developed for on-site and regional injection fields at rates of 70 to 140 million metric tons per year.

None

2011-06-30T23:59:59.000Z

298

A Framework for Evaluating Model Credibility for Warm Season Precipitation in the Northeast: A Case Study of CMIP5 Simulations and Projections  

Science Conference Proceedings (OSTI)

Future projections of Northeast warm season precipitation (JJA) indicate substantial uncertainty. Atmospheric processes important to Northeast JJA precipitation are identified and a first evaluation of five CMIP5 models’ ability to simulate these ...

Jeanne M. Thibeault; Anji Seth

299

Threat Analysis Framework | Department of Energy  

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

Threat Analysis Framework The need to protect national critical infrastructure has led to the development of a threat analysis framework. The threat analysis framework can be...

300

A Probabilistic Framework for Discriminative Dictionary Learning  

E-Print Network (OSTI)

In this paper, we address the problem of discriminative dictionary learning (DDL), where sparse linear representation and classification are combined in a probabilistic framework. As such, a single discriminative dictionary and linear binary classifiers are learned jointly. By encoding sparse representation and discriminative classification models in a MAP setting, we propose a general optimization framework that allows for a data-driven tradeoff between faithful representation and accurate classification. As opposed to previous work, our learning methodology is capable of incorporating a diverse family of classification cost functions (including those used in popular boosting methods), while avoiding the need for involved optimization techniques. We show that DDL can be solved by a sequence of updates that make use of well-known and well-studied sparse coding and dictionary learning algorithms from the literature. To validate our DDL framework, we apply it to digit classification and face recognition and tes...

Ghanem, Bernard

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

An integrated monitoring/modeling framework for assessing human-nature interactions in urbanizing watersheds: Wappinger and Onondaga Creek watersheds, New York, USA  

Science Conference Proceedings (OSTI)

In much of the world, rapidly expanding areas of impervious surfaces due to urbanization threaten water resources. Although tools for modeling and projecting land use change and water quantity and quality exist independently, to date it is rare to find ... Keywords: Impervious surface, Remote sensing, Socio-economic factors, Uncertainty, Urbanization, Water resources

Bongghi Hong; Karin E. Limburg; Myrna H. Hall; Giorgos Mountrakis; Peter M. Groffman; Karla Hyde; Li Luo; Victoria R. Kelly; Seth J. Myers

2012-06-01T23:59:59.000Z

302

An expert system design for a crude oil distillation column with the neural networks model and the process optimization using genetic algorithm framework  

Science Conference Proceedings (OSTI)

In this study an expert system of a crude oil distillation column is designed to predict the unknown values of required product flow and temperature in required input feed characteristics. The system is also capable to optimize the distillation process ... Keywords: Distillation column, Expert system, Genetic algorithms, Neural networks model

S. Motlaghi; F. Jalali; M. Nili Ahmadabadi

2008-11-01T23:59:59.000Z

303

GTT Framework | Department of Energy  

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

GTT Framework GTT Framework GTT Framework GTT Framework Strategic Framework The GTT proposes a strategic framework that organizes these activities into three interrelated dimensions (informational, analytical, and physical), representative of the systems nature of the grid. Each of these dimensions have a corresponding strategic focus: The informational dimension aims to improve the visibility of grid conditions. The analytical dimension increases our understanding of the implications of the observed conditions. The physical dimension enhances the flexibility of the grid to respond to that understanding. The logic behind these focus areas is that a modernized grid should be able to "see" an event or condition, "know" what is happening or about to happen, and "do" something appropriate in response - quickly and

304

Complex Structure Forewarning System Framework  

This invention is a novel predictive framework to control the in-service health of structures or equipment by ... Oak Ridge National Laboratory Rm ...

305

Framework forensic examination computer systems.  

E-Print Network (OSTI)

??This thesis discusses the features and requirements of a computationally intelligent computer forensic system. By introducing a novel concept, "Case-Relevance", a computationally intelligent forensic framework… (more)

Gong, Ruibin.

2008-01-01T23:59:59.000Z

306

Second Cybersecurity Infrastructure Framework Workshop ...  

Science Conference Proceedings (OSTI)

... framework to reduce cybersecurity risks for critical infrastructure from May 29 ... industry experts in all sectors—such as energy, finance, transportation ...

2013-05-01T23:59:59.000Z

307

Application of linear multiple model predictive control (MMPC) framework towards dynamic maximazation of oxygen yield in an elevated-pressure air separation unit  

SciTech Connect

In a typical air separation unit (ASU) utilizing either a simple gaseous oxygen (GOX) cycle or a pumped liquid oxygen (PLOX) cycle, the flowrate of liquid nitrogen (LN2) stream connecting high-pressure and low-pressure ASU columns plays an important role in the total oxygen yield. It has been observed that this yield reaches a maximum at a certain optimal flowrate of LN2 stream. At nominal full-load operation, the flowrate of LN2 stream is maintained near this optimum value, whereas at part-load conditions this flowrate is typically modified in proportion with the load-change (oxygen demand) through a ratio/feed-forward controller. Due to nonlinearity in the entire ASU process, the ratio-modified LN2 flowrate does not guarantee an optimal oxygen yield at part-load conditions. This is further exacerbated when process disturbances in form of “cold-box” heat-leaks enter the system. To address this problem of dynamically maximizing the oxygen yield while the ASU undergoes a load-change and/or a process disturbance, a multiple model predictive control (MMPC) algorithm is proposed. This approach has been used in previous studies to handle large ramp-rates of oxygen demand posed by the gasifier in an IGCC plant. In this study, the proposed algorithm uses linear step-response “blackbox” models surrounding the operating points corresponding to maximum oxygen yield points at different loads. It has been shown that at any operating point of the ASU, the MMPC algorithm, through model-weight calculation based on plant measurements, naturally and continuously selects the dominant model(s) corresponding to the current plant state, while making control-move decisions that approach the maximum oxygen yield point. This dynamically facilitates less energy consumption in form of compressed feed-air compared to a simple ratio control during load-swings. In addition, since a linear optimization problem is solved at each time step, the approach involves much less computational cost compared to a firstprinciple based nonlinear MPC. Introduction

Mahapatra, P.; Zitney, S.; Bequette, B. Wayne

2012-01-01T23:59:59.000Z

308

An Idealized Cloud-Resolving Framework for the Study of Midlatitude Diurnal Convection over Land  

Science Conference Proceedings (OSTI)

This paper introduces an idealized cloud-resolving modeling (CRM) framework for the study of midlatitude diurnal convection over land. The framework is used to study the feedbacks among soil, boundary layer, and diurnal convection. It includes a ...

Linda Schlemmer; Cathy Hohenegger; Jürg Schmidli; Christopher S. Bretherton; Christoph Schär

2011-05-01T23:59:59.000Z

309

A generic framework for local search: application to the sudoku problem  

Science Conference Proceedings (OSTI)

Constraint Satisfaction Problems (CSP) provide a general framework for modeling many practical applications. CSPs can be solved with complete methods or incomplete methods. Although some frameworks has been designed to formalized constraint propagation, ...

T. Lambert; E. Monfroy; F. Saubion

2006-05-01T23:59:59.000Z

310

Sensitivity of North American agriculture to ENSO-based climate scenarios and their socio-economic consequences: Modeling in an integrated assessment framework  

Science Conference Proceedings (OSTI)

A group of Canadian, US and Mexican natural resource specialists, organized by the Pacific Northwest National Laboratory (PNNL) under its North American Energy, Environment and Economy (NA3E) Program, has applied a simulation modeling approach to estimating the impact of ENSO-driven climatic variations on the productivity of major crops grown in the three countries. Methodological development is described and results of the simulations presented in this report. EPIC (the Erosion Productivity Impact Calculator) was the agro-ecosystem model selected-for this study. EPIC uses a daily time step to simulate crop growth and yield, water use, runoff and soil erosion among other variables. The model was applied to a set of so-called representative farms parameterized through a specially-assembled Geographic Information System (GIS) to reflect the soils, topography, crop management and weather typical of the regions represented. Fifty one representative farms were developed for Canada, 66 for the US and 23 for Mexico. El Nino-Southern Oscillation (ENSO) scenarios for the EPIC simulations were created using the historic record of sea-surface temperature (SST) prevailing in the eastern tropical Pacific for the period October 1--September 30. Each year between 1960 and 1989 was thus assigned to an ENSO category or state. The ENSO states were defined as El Nino (EN, SST warmer than the long-term mean), Strong El Nino (SEN, much warmer), El Viejo (EV, cooler) and Neutral (within {+-}0.5 C of the long-term mean). Monthly means of temperature and precipitation were then calculated at each farm for the period 1960--1989 and the differences (or anomalies) between the means in Neutral years and EN, SEN and EV years determined. The average monthly anomalies for each ENSO state were then used to create new monthly statistics for each farm and ENSO-state combination. The adjusted monthly statistics characteristic of each ENSO state were then used to drive a stochastic-weather simulator that provided 30 years of daily-weather data needed to run EPIC. Maps and tables of the climate anomalies by farm show climatic conditions that differ considerably by region, season and ENSO state.

Rosenberg, N.J.; Izaurralde, R.C.; Brown, R.A.; Sands, R.D. [Pacific Northwest National Lab., Richland, WA (United States); Legler, D. [Florida State Univ., Tallahassee, FL (United States). Center for Ocean Atmosphere Prediction Studies; Srinivasan, R. [Texas A and M Univ., College Station, TX (United States). Blacklands Research Center; Tiscareno-Lopez, M.

1997-09-01T23:59:59.000Z

311

An Integrated Framework for Parametric Design Using Building...  

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

An Integrated Framework for Parametric Design Using Building Energy Models Speaker(s): Bryan Eisenhower Date: September 22, 2011 - 12:00pm Location: 90-3122 Seminar HostPoint of...

312

Component framework for coupled integrated fusion plasma simulation  

Science Conference Proceedings (OSTI)

Successful simulation of the complex physics that affect magnetically confined fusion plasma remains an important target milestone towards the development of viable fusion energy. Major advances in the underlying physics formulations, mathematical modeling, ... Keywords: components, coupled simulation, framework, fusion

Wael R. Elwasif; David E. Bernholdt; Lee A. Berry; Donald B. Batchelor

2007-10-01T23:59:59.000Z

313

Development framework components as commonplaces  

Science Conference Proceedings (OSTI)

This paper examines the practice of using front-end web development frameworks and associated plug-ins to develop web application interfaces and suggests returning to a rhetorical foundation for determining the propriety of code use and vetting of an ... Keywords: code libraries, commonplaces, design, development frameworks, extreme usability, front-end development, rhetoric, topoi, user interfaces

Tom Lindsley

2012-10-01T23:59:59.000Z

314

FRAMEWORK FOR AGENT-BASED ROLE DELEGATION  

E-Print Network (OSTI)

This paper describes a framework for addressing the administration of role delegation introduced in the wellknown role-based access control model (RBAC). More specifically, this paper describes how a third party, called an agent, can administer the delegation of roles on behalf of a user who is a member of a certain role and wishes to delegate his role to another user who belongs to another role. Furthermore, this paper describes a framework of reference to systematically address the diverse manifestations of the agent-based delegation, such as Role participant agent, Non-role participant agent, Static, and Dynamic types of delegation and introduces an agent-based delegation model that illustrates delegation based on non-role participant delegation.

Ezedin Barka; Ravi Sandhu

2007-01-01T23:59:59.000Z

315

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

316

Constructibility review process framework for transportation facilities  

E-Print Network (OSTI)

Constructibility is the optimum use of construction knowledge and experience in planning, design, procurement, and field operations in order to achieve overall project objectives ("Constructibility: a primer" 1986). This Thesis presents a framework for implementing constructibility to the transportation industry. The challenge of applying such a process to the transportation industry is the contracting strategy predominantly used: the design/bid/build strategy. In such a contracting environment construction is performed as a completely separate phase. Changes in key players occur once the project is awarded to the contractor. Contractors have little or no opportunity to provide input to planners and designers. The framework developed in this research consists of performing a series of constructibility functions during specific project development phases. Constructibility functions such as forming project teams, storing and retrieving constructibility lessons learned, and providing construction feedback to designers make the project development process more efficient. The computer technique used to build the Constructibility Review Process Framework is the IDEFO modeling technique. The technique is used for modeling functions in a process (decisions, actions, and activities) and the relationship between the functions (Mayer). The model was developed after a thorough investigation of the critical issues facing the state transportation agencies, and an understanding of the current environment these agencies operate in.

Liman, Majed

1995-01-01T23:59:59.000Z

317

DYNAMIC FACTOR GRAPHS: A NOVEL FRAMEWORK FOR MULTIPLE FEATURES DATA FUSION  

E-Print Network (OSTI)

DYNAMIC FACTOR GRAPHS: A NOVEL FRAMEWORK FOR MULTIPLE FEATURES DATA FUSION Kittipat Kampa, Jose C and fusion are combined in the same framework. The new framework is built on 2 main ideas; 1) flexible segmentation and fusion with linear Gaussian model assumption. Index Terms-- dynamic factor graphs, sum

Slatton, Clint

318

UC SECURITY FRAMEWORK 2011 -2012  

E-Print Network (OSTI)

1 UC SECURITY FRAMEWORK 2011 - 2012 #12;2 Contents Background..................................................................................................................................4 About UC Security & Campus Community Support .................................................................5 Security Service Authority and Relationship with NZ Police and Emergency Services ...........5

Hickman, Mark

319

Investigating impacts of natural and human-induced environmental changes on hydrological processes and flood hazards using a GIS-based hydrological/hydraulic model and remote sensing data  

E-Print Network (OSTI)

Natural and human-induced environmental changes have been altering the earth's surface and hydrological processes, and thus directly contribute to the severity of flood hazards. To understand these changes and their impacts, this research developed a GISbased hydrological and hydraulic modeling system, which incorporates state-of-the-art remote sensing data to simulate flood under various scenarios. The conceptual framework and technical issues of incorporating multi-scale remote sensing data have been addressed. This research develops an object-oriented hydrological modeling framework. Compared with traditional lumped or cell-based distributed hydrological modeling frameworks, the object-oriented framework allows basic spatial hydrologic units to have various size and irregular shape. This framework is capable of assimilating various GIS and remotely-sensed data with different spatial resolutions. It ensures the computational efficiency, while preserving sufficient spatial details of input data and model outputs. Sensitivity analysis and comparison of high resolution LIDAR DEM with traditional USGS 30m resolution DEM suggests that the use of LIDAR DEMs can greatly reduce uncertainty in calibration of flow parameters in the hydrologic model and hence increase the reliability of modeling results. In addition, subtle topographic features and hydrologic objects like surface depressions and detention basins can be extracted from the high resolution LiDAR DEMs. An innovative algorithm has been developed to efficiently delineate surface depressions and detention basins from LiDAR DEMs. Using a time series of Landsat images, a retrospective analysis of surface imperviousness has been conducted to assess the hydrologic impact of urbanization. The analysis reveals that with rapid urbanization the impervious surface has been increased from 10.1% to 38.4% for the case study area during 1974 - 2002. As a result, the peak flow for a 100-year flood event has increased by 20% and the floodplain extent has expanded by about 21.6%. The quantitative analysis suggests that the large regional detentions basins have effectively offset the adverse effect of increased impervious surface during the urbanization process. Based on the simulation and scenario analyses of land subsidence and potential climate changes, some planning measures and policy implications have been derived for guiding smart urban growth and sustainable resource development and management to minimize flood hazards.

Wang, Lei

2006-08-01T23:59:59.000Z

320

Elsevier Editorial System(tm) for Computer Vision and Image Understanding Manuscript Draft Manuscript Number: Title: Terrain Modelling from lidar range data in natural landscapes: a predictive and Bayesian framework Article Type: Special Issue: New Advanc  

E-Print Network (OSTI)

Abstract: The Earth's topography, including vegetation and human-made features, reduced to a virtual 3D representation is a key geographic layer for any extended development or risk management project. Processed from multiple aerial images, or from airborne lidar systems, the 3D topography is first represented as a point cloud. This article deals with the generation of Digital Terrain Models in natural landscapes. We present a global methodology for estimating the terrain height by deriving a predictive filter paradigm. Under the assumption that the terrain topography (elevation and slope) is regular in a neighbouring system, a predictive filter combines linearly the predicted topographic values and the effective measured values. In this paper, it is applied to 3D lidar data which are known to be of high altimetric accuracy. The algorithm generates an adaptive local geometry wherein the altimetric distribution of the point cloud is analysed. Since local terrain elevations depend on the local slope, a predictive filter is first applied on the slopes then on the terrain elevations. The algorithm propagates through the point cloud following specific rules in order to optimize the probability of computing areas containing terrain points. Considered as an initial surface, theprevious DTM is finally regularized in a Bayesian framework. Our approach is based on the definition of an energy function that manages the evolution of a terrain surface. The energy is designed as a compromise between a data attraction term and a regularization term. The minimum of this energy corresponds to the

unknown authors

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Making frameworks work: a project retrospective  

Science Conference Proceedings (OSTI)

Various issues make framework development harder than regular development. Building product lines and frameworks requires increased coordination and communication between stakeholders and across the organization. The difficulty of building the right ... Keywords: experience report, object-oriented frameworks, product lines

Marwan Abi-Antoun

2007-10-01T23:59:59.000Z

322

A Conceptual Framework for Progressing Towards Sustainability...  

Open Energy Info (EERE)

Conceptual Framework for Progressing Towards Sustainability in the Agriculture and Food Sector Jump to: navigation, search Logo: A Conceptual Framework for Progressing Towards...

323

Carbon Dioxide Separation with Novel Microporous Metal Organic Frameworks  

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

Separation with Separation with Novel Microporous Metal Organic Frameworks Background UOP LLC, the University of Michigan, and Northwestern University are collaborating on a three-year program to develop novel microporous metal organic frameworks (MOFs) suitable for CO 2 capture and separation. MOFs are hybrid organic/inorganic structures in which the organic moiety is readily derivatized. This innovative program is using sophisticated molecular modeling to evaluate the structurally

324

A Generic Framework for Network Forensics  

E-Print Network (OSTI)

Internet is the most powerful medium as on date, facilitating varied services to numerous users. It has also become the environment for cyber warfare where attacks of many types (financial, ideological, revenge) are being launched. The e-commerce transactions being carried out online are of major interest to cybercriminals. The Internet needs to be protected from these attacks and an appropriate response has to be generated to handle them to reduce the impact. Network forensics is the science that deals with capture, recording, and analysis of network traffic for investigative purpose and incident response. There are many tools which assist in capturing data transferred over the networks so that an attack or the malicious intent of the intrusions may be investigated. This paper presents a generic framework for network forensic analysis by specifically identifying the steps connected only to network forensics from the already proposed models for digital investigation. Each of the phases in the framework is elucidated. A comparison of the proposed model is done with the existing models for digital investigation. Research challenges in various phases of the model are approached with specific reference to network forensics.

Emmanuel S. Pilli; R. C. Joshi; Rajdeep Niyogi

2010-01-01T23:59:59.000Z

325

Framework for evaluating management interventions for water-quality improvement across multiple agents  

Science Conference Proceedings (OSTI)

It is difficult to accurately predict the impacts of policies for control of nonpoint-source pollution because analytical frameworks incorporating agent heterogeneity are rare. This paper overcomes this limitation through describing a new framework in ... Keywords: Catchment modelling, Integrated modelling, Model calibration, Multiple agents, Nonpoint-source pollution

Graeme J. Doole; T. Ramilan; David J. Pannell

2011-07-01T23:59:59.000Z

326

NREL: Wind Research - New Modularization Framework Transforms FAST Wind  

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

New Modularization Framework Transforms FAST Wind Turbine Modeling Tool New Modularization Framework Transforms FAST Wind Turbine Modeling Tool January 3, 2014 The old and new versions of the FAST wind turbine modeling tool are represented in this illustration by boxes. The earlier version of FAST is represented by three boxes aligned in a column on the left side of the illustration. They contain the words AeroDyn, FAST, and Hydrodyn and represent the three modules that worked together to model aerodynamics, hydrodynamics and servo-elastics. Double ended arrows between the boxes indicate interaction between these modules. A large red arrow pointed from the three boxes to a large rectangle in the middle shows how this earlier software evolved into the new FAST Framework. The large rectangular box in the middle contains the words FAST Driver. Seven smaller boxes to the right of the FAST driver represent the new modules that feed into the driver.

327

Programmatic Framework | Department of Energy  

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

Programmatic Framework Programmatic Framework Programmatic Framework PROGRAM FACT SHEETS FUSRAP Nevada Offsites UMTRCA Title I and II PROGRAM TYPES UMTRCA Title I Sites UMTRCA Title II Sites FUSRAP Sites D&D Sites Nevada Offsites CERCLA/RCRA Sites NWPA Section 151 Site Other UMTRCA Title I Disposal and Processing Sites (Regulatory Drivers) For UMTRCA Title I disposal sites managed by LM, DOE becomes a licensee to the U.S. Nuclear Regulatory Commission (NRC). Inspection, reporting, and record-keeping requirements are defined in Title 10 Code of Federal Regulations (CFR) Part 40.27, "General License for Custody and Long-Term Care of Residual Radioactive Material Disposal Sites." The general license for long-term custody is indefinite in duration. Usually, title for the land is assigned to an agency of the Federal government, and the land is

328

Framework for SCADA Security Policy  

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

Framework for SCADA Security Policy Framework for SCADA Security Policy Dominique Kilman Jason Stamp dkilman@sandia.gov jestamp@sandia.gov Sandia National Laboratories Albuquerque, NM 87185-0785 Abstract - Modern automation systems used in infrastruc- ture (including Supervisory Control and Data Acquisition, or SCADA) have myriad security vulnerabilities. Many of these relate directly to inadequate security administration, which precludes truly effective and sustainable security. Adequate security management mandates a clear administrative struc- ture and enforcement hierarchy. The security policy is the root document, with sections covering purpose, scope, posi- tions, responsibilities, references, revision history, enforce- ment, and exceptions for various subjects relevant for system

329

A Quaternion Framework for Color Image Smoothing and Segmentation  

Science Conference Proceedings (OSTI)

In this paper, we present feature/detail preserving models for color image smoothing and segmentation using the Hamiltonian quaternion framework. First, we introduce a novel quaternionic Gabor filter (QGF) which can combine the color channels and the ... Keywords: Color image segmentation, Color image smoothing, Continuous mixture models, Directional distributions, Matrix-Fisher distribution, Quaternion Gabor filter, Quaternions, Watson distribution, von Mises distribution

Özlem N. Subakan; Baba C. Vemuri

2011-02-01T23:59:59.000Z

330

A Framework for Business Intelligence Application using Ontological Classification  

E-Print Network (OSTI)

Every business needs knowledge about their competitors to survive better. One of the information repositories is web. Retrieving Specific information from the web is challenging. An Ontological model is developed to capture specific information by using web semantics. From the Ontology model, the relations between the data are mined using decision tree. From all these a new framework is developed for Business Intelligence.

Martin, A; Venkatesan, V Prasanna

2011-01-01T23:59:59.000Z

331

A Framework for Bioelectronics: Discovery and Innovation  

Science Conference Proceedings (OSTI)

A Framework for Bioelectronics: Discovery and Innovation. There is an opportunity for dramatically increased synergy between ...

2013-06-25T23:59:59.000Z

332

The Observational?Inductive Framework for Science  

Science Conference Proceedings (OSTI)

A new observational?inductive framework for science is emerging due to recent developments in sensors

Timothy E. Eastman

2006-01-01T23:59:59.000Z

333

NIST Prototypes Framework for Evaluating Sustainability ...  

Science Conference Proceedings (OSTI)

NIST Prototypes Framework for Evaluating Sustainability Standards. ... Whatever the drivers, businesses are boosting their sustainability efforts. ...

2011-10-26T23:59:59.000Z

334

A Framework for Proof Systems  

Science Conference Proceedings (OSTI)

Linear logic can be used as a meta-logic to specify a range of object-level proof systems. In particular, we show that by providing different polarizations within a focused proof system for linear logic, one can account for natural ... Keywords: Focusing, Linear logic, Logical framework, Meta-logic

Vivek Nigam; Dale Miller

2010-08-01T23:59:59.000Z

335

Developing a Regional Recovery Framework  

Science Conference Proceedings (OSTI)

Abstract A biological attack would present an unprecedented challenge for local, state, and federal agencies; the military; the private sector; and individuals on many fronts ranging from vaccination and treatment to prioritization of cleanup actions to waste disposal. To prepare the Seattle region to recover from a biological attack, the Seattle Urban Area Security Initiative (UASI) partners collaborated with military and federal agencies to develop a Regional Recovery Framework for a Biological Attack in the Seattle Urban Area. The goal was to reduce the time and resources required to recover and restore wide urban areas, military installations, and other critical infrastructure following a biological incident by providing a coordinated systems approach. Based on discussions in small workshops, tabletop exercises, and interviews with emergency response agency staff, the partners identified concepts of operation for various areas to address critical issues the region will face as recovery progresses. Key to this recovery is the recovery of the economy. Although the Framework is specific to a catastrophic, wide-area biological attack using anthrax, it was designed to be flexible and scalable so it could also serve as the recovery framework for an all-hazards approach. The Framework also served to coalesce policy questions that must be addressed for long-term recovery. These questions cover such areas as safety and health, security, financial management, waste management, legal issues, and economic development.

Lesperance, Ann M.; Olson, Jarrod; Stein, Steven L.; Clark, Rebecca; Kelly, Heather; Sheline, Jim; Tietje, Grant; Williamson, Mark; Woodcock, Jody

2011-09-01T23:59:59.000Z

336

Energy Forecasting Framework and Emissions Consensus Tool (EFFECT) | Open  

Open Energy Info (EERE)

Energy Forecasting Framework and Emissions Consensus Tool (EFFECT) Energy Forecasting Framework and Emissions Consensus Tool (EFFECT) Jump to: navigation, search LEDSGP green logo.png FIND MORE DIA TOOLS This tool is part of the Development Impacts Assessment (DIA) Toolkit from the LEDS Global Partnership. Tool Summary LAUNCH TOOL Name: Energy Forecasting Framework and Emissions Consensus Tool (EFFECT) Agency/Company /Organization: Energy Sector Management Assistance Program of the World Bank Sector: Energy Focus Area: Non-renewable Energy Topics: Baseline projection, Co-benefits assessment, GHG inventory Resource Type: Software/modeling tools User Interface: Spreadsheet Complexity/Ease of Use: Simple Website: www.esmap.org/esmap/EFFECT Cost: Free Equivalent URI: www.esmap.org/esmap/EFFECT Energy Forecasting Framework and Emissions Consensus Tool (EFFECT) Screenshot

337

Making Sustainable Decisions Using The KONVERGENCE Framework  

Science Conference Proceedings (OSTI)

Hundreds of contaminated facilities and sites must be cleaned up. ''Cleanup'' includes decommissioning, environmental restoration, and waste management. Cleanup can be complex, expensive, risky, and time-consuming. Decisions are often controversial, can stall or be blocked, and are sometimes re-done--some before implementation, some decades later. Making and keeping decisions with long time horizons involves special difficulties and requires new approaches. Our project goal is to make cleanup decisions easier to make, implement, keep, and sustain. By sustainability, we mean decisions that work better over the entire time-period-from when a decision is made, through implementation, to its end point. That is, alternatives that can be kept ''as is'' or adapted as circumstances change. Increased attention to sustainability and adaptability may decrease resistance to making and implementing decisions. Our KONVERGENCE framework addresses these challenges. The framework is based on a mental model that states: where Knowledge, Values, and Resources converge (the K, V, R in KONVERGENCE), you will find a sustainable decision. We define these areas or universes as follows: (1) Knowledge: what is known about the problem and possible solutions? (2) Values: what is important to those affected by the decision? (3) Resources: what is available to implement possible solutions or improve knowledge? This mental model helps analyze and visualize what is happening as decisions are made and kept. Why is there disagreement? Is there movement toward konvergence? Is a past decision drifting out of konvergence? The framework includes strategic improvements, i.e., expand the spectrum of alternatives to include adaptable alternatives and decision networks. It includes tactical process improvements derived from experience, values, and relevant literature. This paper includes diagnosis and medication (suggested path forward) for intractable cases.

Piet, S. J.; Gibson, P. L.; Joe, J. C.; Kerr, T. A.; Nitschke, R. L.; Dakins, M. E.

2003-02-25T23:59:59.000Z

338

Homogenization of a catalyst layer model for periodically distributed pore geometries in PEM fuel cells  

E-Print Network (OSTI)

We formally derive an effective catalyst layer model comprising the reduction of oxygen for periodically distributed pore geometries. By assumption, the pores are completely filled with water and the surrounding walls consist of catalyst particles which are attached to an electron conducting microstructure. The macroscopic transport equations are established by a multi-scale approach, based on microscopic phenomena at the pore level, and serve as a first step toward future optimization of catalyst layer designs.

Schmuck, Markus

2012-01-01T23:59:59.000Z

339

Homogenization of a catalyst layer model for periodically distributed pore geometries in PEM fuel cells  

E-Print Network (OSTI)

We formally derive an effective catalyst layer model comprising the reduction of oxygen for periodically distributed pore geometries. By assumption, the pores are completely filled with water and the surrounding walls consist of catalyst particles which are attached to an electron conducting microstructure. The macroscopic transport equations are established by a multi-scale approach, based on microscopic phenomena at the pore level, and serve as a first step toward future optimization of catalyst layer designs.

Markus Schmuck; Peter Berg

2012-04-30T23:59:59.000Z

340

Framework and authoring tool for an extension of the UIML language  

Science Conference Proceedings (OSTI)

This paper presents a framework for the design of User Interfaces (UIs). By applying model transformations, the framework allows different UIs to be generated for different computing platforms. The tool presented in this work helps designers to build ... Keywords: Authoring tool, Model-driven development, Multi-platform user interface, UIML

Luis Iñesta; Nathalie Aquino; Juan Sánchez

2009-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

An Interactive Simulation Framework for Burning Objects  

E-Print Network (OSTI)

We present a simulation framework to integrate several aspects of the combustion and burning process in a unified and modular manner. A simple three gas flame model is used to simulate a combustion process, while air motion is simulated as a single moving fluid. Solid objects inside the simulation domain can catch fire and start burning. Heat information is transferred from the fluid simulator to a solid simulator, while the solid simulator injects fuel into the fluid simulation. We also present a simple yet effective method for modeling of object decomposition under combustion using level set methods. The interaction between modules is presented as well as a discussion of fluid-solid coupling. All simulation modules run together at interactive rates, enabling the user to tweak the simulation parameters and setup for desired behavior 1. 1

Zeki Melek; John Keyser

2005-01-01T23:59:59.000Z

342

Assessment of Molecular Modeling & Simulation  

Science Conference Proceedings (OSTI)

This report reviews the development and applications of molecular and materials modeling in Europe and Japan in comparison to those in the United States. Topics covered include computational quantum chemistry, molecular simulations by molecular dynamics and Monte Carlo methods, mesoscale modeling of material domains, molecular-structure/macroscale property correlations like QSARs and QSPRs, and related information technologies like informatics and special-purpose molecular-modeling computers. The panel's findings include the following: The United States leads this field in many scientific areas. However, Canada has particular strengths in DFT methods and homogeneous catalysis; Europe in heterogeneous catalysis, mesoscale, and materials modeling; and Japan in materials modeling and special-purpose computing. Major government-industry initiatives are underway in Europe and Japan, notably in multi-scale materials modeling and in development of chemistry-capable ab-initio molecular dynamics codes.

None

2002-01-03T23:59:59.000Z

343

A framework for coupling flow and deformation of the porous solid  

E-Print Network (OSTI)

In this paper, we consider the flow of an incompressible fluid in a deformable porous solid. We present a mathematical model using the framework offered by the theory of interacting continua. In its most general form, this framework provides a mechanism for capturing multiphase flow, deformation, chemical reactions and thermal processes, as well as interactions between the various physics in a conveniently implemented fashion. To simplify the presentation of the framework, results are presented for a particular model than can be seen as an extension of Darcy's equation (which assumes that the porous solid is rigid) that takes into account elastic deformation of the porous solid. The model also considers the effect of deformation on porosity. We show that using this model one can recover identical results as in the framework proposed by Biot and Terzaghi. Some salient features of the framework are as follows: (a) It is a consistent mixture theory model, and adheres to the laws and principles of continuum therm...

Turner, D Z; Martinez, M J

2013-01-01T23:59:59.000Z

344

Improving Building Performance at Urban Scale with a Framework for  

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

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

345

The impact of including water constraints on food production within a CGE framework  

E-Print Network (OSTI)

This research explores the long-term relationship between water resources, irrigated land use change and crop production within a computable general equilibrium modeling framework. The modeling approach is developed on a ...

Baker, Jonathan (Jonathan Early)

2011-01-01T23:59:59.000Z

346

Balanced feature matching in probabilistic framework and its application on object localisation  

Science Conference Proceedings (OSTI)

A new algorithm of feature matching is proposed after balancing analysis of adjacency matrix of the matching model in a probabilistic framework. Considering all the interaction of the two feature point sets, a probabilistic model is established and solved ...

Ying Chen; Chunlu Ai

2013-02-01T23:59:59.000Z

347

Toward a Systematic Framework for Deploying Synchrophasors  

E-Print Network (OSTI)

Toward a Systematic Framework for Deploying Synchrophasors and their Utilization for Improving for Deploying Synchrophasors and their Utilization for Improving Performance of Future Electric Energy Systems a Systematic Framework for Deploying Synchrophasors and their Utilization for Improving Performance of Future

348

Gas adsorption on metal-organic frameworks  

SciTech Connect

The present invention involves the use of certain metal organic frameworks that have been treated with water or another metal titrant in the storage of carbon dioxide. The capacity of these frameworks is significantly increased through this treatment.

Willis, Richard R. (Cary, IL); Low, John J. (Schaumburg, IL), Faheem, Syed A. (Huntley, IL); Benin, Annabelle I. (Oak Forest, IL); Snurr, Randall Q. (Evanston, IL); Yazaydin, Ahmet Ozgur (Evanston, IL)

2012-07-24T23:59:59.000Z

349

A General Framework for Forecast Verification  

Science Conference Proceedings (OSTI)

A general framework for forecast verification based on the joint distribution of forecasts and observations is described. For further elaboration of the framework, two factorizations of the joint distribution are investigated: 1) the calibration-...

Allan H. Murphy; Robert L. Winkler

1987-07-01T23:59:59.000Z

350

Constraining the Influence of Natural Variability to Improve Estimates of Global Aerosol Indirect Effects in a Nudged Version of the Community Atmosphere Model 5  

SciTech Connect

Natural modes of variability on many timescales influence aerosol particle distributions and cloud properties such that isolating statistically significant differences in cloud radiative forcing due to anthropogenic aerosol perturbations (indirect effects) typically requires integrating over long simulations. For state-of-the-art global climate models (GCM), especially those in which embedded cloud-resolving models replace conventional statistical parameterizations (i.e. multi-scale modeling framework, MMF), the required long integrations can be prohibitively expensive. Here an alternative approach is explored, which implements Newtonian relaxation (nudging) to constrain simulations with both pre-industrial and present-day aerosol emissions toward identical meteorological conditions, thus reducing differences in natural variability and dampening feedback responses in order to isolate radiative forcing. Ten-year GCM simulations with nudging provide a more stable estimate of the global-annual mean aerosol indirect radiative forcing than do conventional free-running simulations. The estimates have mean values and 95% confidence intervals of -1.54 ± 0.02 W/m2 and -1.63 ± 0.17 W/m2 for nudged and free-running simulations, respectively. Nudging also substantially increases the fraction of the world’s area in which a statistically significant aerosol indirect effect can be detected (68% and 25% of the Earth's surface for nudged and free-running simulations, respectively). One-year MMF simulations with and without nudging provide global-annual mean aerosol indirect radiative forcing estimates of -0.80 W/m2 and -0.56 W/m2, respectively. The one-year nudged results compare well with previous estimates from three-year free-running simulations (-0.77 W/m2), which showed the aerosol-cloud relationship to be in better agreement with observations and high-resolution models than in the results obtained with conventional parameterizations.

Kooperman, G. J.; Pritchard, M. S.; Ghan, Steven J.; Wang, Minghuai; Somerville, Richard C.; Russell, Lynn

2012-12-11T23:59:59.000Z

351

DRAFT Outline - Preliminary Framework to Reduce Cyber ...  

Science Conference Proceedings (OSTI)

Page 1. 1 DRAFT Outline - Preliminary Framework to Reduce Cyber Risks to Critical Infrastructure, July 1, 2013 NOTES ...

2013-07-02T23:59:59.000Z

352

Developing a Framework to Improve Critical Infrastructure ...  

Science Conference Proceedings (OSTI)

... To that end any risk framework ... financial, telecommunications, transportation, energy, chemical, information ... heating and cooling, physical security ...

2013-04-08T23:59:59.000Z

353

DOE Competency Framework | Department of Energy  

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

managers, and supervisors. DOE Competency Framework More Documents & Publications Federal Employee Training Desk Reference DOE Competency Dictionary DOE General Competencies...

354

Comparison of Novel Microstructure Quantification Frameworks for ...  

Science Conference Proceedings (OSTI)

Bayesian inference of grain boundary properties from heterogeneous data · Comparison of Novel Microstructure Quantification Frameworks for Visualization,  ...

355

Making Sustainable Decisions Using the KONVERGENCE Framework  

SciTech Connect

Hundreds of contaminated facilities and sites must be cleaned up. “Cleanup” includes decommissioning, environmental restoration, and waste management. Cleanup can be complex, expensive, risky, and time-consuming. Decisions are often controversial, can stall or be blocked, and are sometimes re-done - some before implementation, some decades later. Making and keeping decisions with long time horizons involves special difficulties and requires new approaches, including: • New ways (mental model) to analyze and visualize the problem, • Awareness of the option to shift strategy or reframe from a single decision to an adaptable network of decisions, and • Improved tactical processes that account for several challenges. These include the following: • Stakeholder values are a more fundamental basis for decision making and keeping than “meeting regulations.” • Late-entry players and future generations will question decisions. • People may resist making “irreversible” decisions. • People need “compelling reasons” to take action in the face of uncertainties. Our project goal is to make cleanup decisions easier to make, implement, keep, and sustain. By sustainability, we mean decisions that work better over the entire time-period—from when a decision is made, through implementation, to its end point. That is, alternatives that can be kept “as is” or adapted as circumstances change. Increased attention to sustainability and adaptability may decrease resistance to making and implementing decisions. Our KONVERGENCE framework addresses these challenges. The framework is based on a mental model that states: where Knowledge, Values, and Resources converge (the K, V, R in KONVERGENCE), you will find a sustainable decision. We define these areas or universes as follows: • Knowledge: what is known about the problem and possible solutions? • Values: what is important to those affected by the decision? • Resources: what is available to implement possible solutions or improve knowledge? This mental model helps analyze and visualize what is happening as decisions are made and kept. Why is there disagreement? Is there movement toward konvergence? Is a past decision drifting out of konvergence? The framework includes strategic improvements, i.e., expand the spectrum of alternatives to include adaptable alternatives and decision networks. It includes tactical process improvements derived from experience, values, and relevant literature. This paper includes diagnosis and medication (suggested path forward) for intractable cases.

Piet, Steven James; Gibson, Patrick Lavern; Joe, Jeffrey Clark; Kerr, Thomas A; Nitschke, Robert Leon; Dakins, Maxine Ellen

2003-02-01T23:59:59.000Z

356

The CloudBrowser web application framework  

Science Conference Proceedings (OSTI)

CloudBrowser is a web application framework that supports the development of rich Internet applications whose entire user interface and application logic resides on the server, while all client/server communication is provided by the framework. CloudBrowser ... Keywords: ajax, cloud applications, paas, remote display, server-centric, web application framework

Brian McDaniel; Godmar Back

2012-10-01T23:59:59.000Z

357

A framework for password-based authenticated key exchange1  

Science Conference Proceedings (OSTI)

In this paper, we present a general framework for password-based authenticated key exchange protocols, in the common reference string model. Our protocol is actually an abstraction of the key exchange protocol of Katz et al. and is based on the recently ... Keywords: Passwords, authentication, dictionary attack, projective hash functions

Rosario Gennaro; Yehuda Lindell

2006-05-01T23:59:59.000Z

358

A framework for information system usage in collaborative care  

Science Conference Proceedings (OSTI)

Clinical information systems (CIS) can affect the quality of patient care. In this paper, we focus on CIS use in the collaborative treatment of chronic diseases. We have developed a framework to determine which CIS functions have general usefulness for ... Keywords: Collaboration, Cooperative behavior [MeSH], Information systems [MeSH], Interdisciplinary communication [MeSH], Organizational models [MeSH

David A. Dorr; Spencer S. Jones; Adam Wilcox

2007-06-01T23:59:59.000Z

359

On sensitivity analysis in the 4dVar framework  

Science Conference Proceedings (OSTI)

The sensitivity of model forecasts to uncertainties in the control variables is evaluated using the adjoint technique and the ensemble generated by the reduced-order 4d variational (R4dVar) algorithm in the framework of twin-data experiments with ...

Max Yaremchuk; Paul Martin

360

Situations, a General Framework for Studying Information Retrieval  

E-Print Network (OSTI)

Situations, a General Framework for Studying Information Retrieval T.W.C. Huibers P.D. Bruza are used to model the information born by objects such as documents. An arbitrary information retrieval years the logical approach to information retrieval has gained quite a deal of attention (see

Utrecht, Universiteit

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A thermodynamic framework for the study of crystallization in polymers  

Science Conference Proceedings (OSTI)

In this paper, we present a new thermodynamic framework within the context of continuum mechanics, to predict the behavior of crystallizing polymers. The constitutive models that are developed within this thermodynamic setting are able to describe the ... Keywords: crystallization, entropy production, material symmetry, natural configurations, semi-crystalline polymers

I. J. Rao; K. R. Rajagopal

2002-05-01T23:59:59.000Z

362

A theoretical framework on proactive information exchange in agent teamwork  

Science Conference Proceedings (OSTI)

Proactive information delivery is critical to achieving effective teamwork. However, existing theories do not adequately address proactive information delivery. This paper presents a formal framework for proactive information delivery in agent teamwork. ... Keywords: Agent teamwork, Communicative acts, Information needs, Proactive information delivery, Shared mental model

Xiaocong Fan; John Yen; Richard A. Volz

2005-11-01T23:59:59.000Z

363

A theoretical framework on proactive information exchange in agent teamwork  

Science Conference Proceedings (OSTI)

Proactive information delivery is critical to achieving effective teamwork. However, existing theories do not adequately address proactive information delivery. This paper presents a formal framework for proactive information delivery in agent teamwork. ... Keywords: agent teamwork, communicative acts, information needs, proactive information delivery, shared mental model

Xiaocong Fan; John Yen; Richard A. Volz

2005-11-01T23:59:59.000Z

364

A Framework to Design and Optimize Chemical Flooding Processes  

SciTech Connect

The goal of this proposed research is to provide an efficient and user friendly simulation framework for screening and optimizing chemical/microbial enhanced oil recovery processes. The framework will include (1) a user friendly interface to identify the variables that have the most impact on oil recovery using the concept of experimental design and response surface maps, (2) UTCHEM reservoir simulator to perform the numerical simulations, and (3) an economic model that automatically imports the simulation production data to evaluate the profitability of a particular design. Such a reservoir simulation framework is not currently available to the oil industry. The objectives of Task 1 are to develop three primary modules representing reservoir, chemical, and well data. The modules will be interfaced with an already available experimental design model. The objective of the Task 2 is to incorporate UTCHEM reservoir simulator and the modules with the strategic variables and developing the response surface maps to identify the significant variables from each module. The objective of the Task 3 is to develop the economic model designed specifically for the chemical processes targeted in this proposal and interface the economic model with UTCHEM production output. Task 4 is on the validation of the framework and performing simulations of oil reservoirs to screen, design and optimize the chemical processes.

Mojdeh Delshad; Gary A. Pope; Kamy Sepehrnoori

2006-08-31T23:59:59.000Z

365

A four-way framework for validating a specification  

Science Conference Proceedings (OSTI)

The validation of a software specification may be viewed as a function of what the specification is to be used for and any comprehensive validation exercise needs to address possibly conflicting requirements. In this paper we develop a framework which ... Keywords: formal specification, requirements, spiral model, validation

Cyrille Dongmo; John A. van der Poll

2010-10-01T23:59:59.000Z

366

Integrated framework for analysis: electric sector expansion in developing countries  

Science Conference Proceedings (OSTI)

The objective of this dissertation is the development of an analytical framework for the assessment of electric sector expansion strategies in developing countries, in the context of overall development planning, and with particular emphasis on macroeconomic and social implications. The framework will ensure that each electric capacity expansion alternative is linked quantitatively and consistently with a given economic development plan. The analytical model employs an integrated set of technological and economic models to explore the national energy and economy response to electric sector expansion planning for the Korean case. In this study, two integrated models were developed. The integrated model 1 is composed of a macroeconomic model, an energy input-output model, and an energy network flow model. This model accounts for the relationships of energy demand with overall economic development, and interfuel substitution, for the relationships between the investment capital required to meet astated levels of electric demand and overall investment planning and foreign exchange requirements, and economic impacts of the energy sector on gross national product (GNP) and balance of payments (BOP). The integrated model 2 is composed of an energy input-output model, and energy network flow model, and a GNP identify constraint,and calculates the macroeconomic-balanced level of comsumption, electric sector investments, industrial sector investments, and energy imports given policy-determined GNP and other GNP components. The two models were applied ot the Korean case by using a trial scenario and assumed input data. Computational results demonstrate and prove the workability of the models.

Lee, M.K.

1982-01-01T23:59:59.000Z

367

Modeling and Properties of Composites  

Science Conference Proceedings (OSTI)

Aug 5, 2010... fabricated from composite materials are essential for safe and cost ... the multi- scale pattern combined with a grid and random dots was ...

368

A general framework for the manufacturing workstation design optimization: a combined ergonomic and operational approach  

Science Conference Proceedings (OSTI)

A general framework for the effective design, or re-design, of manufacturing workstations under a combined ergonomic and operational optimization approach is presented. This general framework must be regarded as a method for facilitating and supporting ... Keywords: digital human modelling and simulation (DHMS), production/ manufacturing systems, workstations design

David Del Rio Vilas, Francesco Longo, Nadia Rego Monteil

2013-03-01T23:59:59.000Z

369

Interaction frogger: a design framework to couple action and function through feedback and feedforward  

Science Conference Proceedings (OSTI)

In this paper we present a design framework to analyze person-product interaction. Its focus is on how the user's action and the product's function are coupled through different types of feedback and feedforward: inherent and augmented information. Instead ... Keywords: design framework, feedback, feedforward, interaction models, tangible user interface

S. A. G. Wensveen; J. P. Djajadiningrat; C. J. Overbeeke

2004-08-01T23:59:59.000Z

370

Frameworks and data initiatives for smart grid and other cyber-physical systems (invited keynote)  

Science Conference Proceedings (OSTI)

I describe the NIST smart grid framework and its applicability as a model for organizational efforts to advance cyber-physical systems, and provide an overview of smart grid data initiatives. Keywords: cybersecurity, data analytics, data initiatives, frameworks, green button, interoperability, smart grid, testing and certification

David A. Wollman

2013-06-01T23:59:59.000Z

371

Microsoft PowerPoint - Multi-Scale Computational_Perepezko  

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

(PI), Otto J. Lu-Steffes Dept. Materials Science & Engineering, University of Wisconsin-Madison Grant Number: FE0007377 Performance Period: 53112-61113 OUTLINE: *...

372

Multi-Scale Characterizations and Formation Mechanism in an ODS ...  

Science Conference Proceedings (OSTI)

We proposed a new processing route based on reactive ball milling of iron oxide (Fe2O3), yttria intermetallic (YFe3) and ...

373

Multi-Scale Molecular Designing of Nanoparticles and Functional ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Various bottom-up and top-down innovative procedures for the molecular designing of nanoparticles, enabling the preparation of powders and ...

374

SEMSim: A Distributed Architecture for Multi-scale Traffic Simulation  

Science Conference Proceedings (OSTI)

With the fast urbanization of our modern society, transportation systems in cities are facing increasing problems such as congestion, collisions, and high levels of emissions. Researchers have been searching for solutions by investigating better urban ... Keywords: Nanoscopic Traffic Simulation, Parallel and Distributed Simulation

Yadong Xu; Heiko Aydt; Michael Lees

2012-07-01T23:59:59.000Z

375

A dual mass flux framework for boundary layer convection  

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

A dual mass flux framework for boundary layer convection A dual mass flux framework for boundary layer convection Neggers, Roel European Centre for Medium-range Weather Forecasts (ECMWF) Category: Modeling A new convective boundary layer scheme is presented that is currently being developed for the Integrated Forecasting System (IFS) of the European Centre for Medium-range Weather Forecasts (ECMWF). Part of the total turbulent flux is modeled through advective mass flux by multiple updrafts, initialized at the surface. Two groups of updrafts are explicitly represented; i) updrafts that never reach their lifting condensation level, and ii) updrafts that condensate and become cloudy. Key new ingredient is the flexibility of the associated updraft area fractions, as a function of model state. As a result, an extra degree of freedom is introduced in the

376

A surety engineering framework to reduce cognitive systems risks.  

SciTech Connect

Cognitive science research investigates the advancement of human cognition and neuroscience capabilities. Addressing risks associated with these advancements can counter potential program failures, legal and ethical issues, constraints to scientific research, and product vulnerabilities. Survey results, focus group discussions, cognitive science experts, and surety researchers concur technical risks exist that could impact cognitive science research in areas such as medicine, privacy, human enhancement, law and policy, military applications, and national security (SAND2006-6895). This SAND report documents a surety engineering framework and a process for identifying cognitive system technical, ethical, legal and societal risks and applying appropriate surety methods to reduce such risks. The framework consists of several models: Specification, Design, Evaluation, Risk, and Maturity. Two detailed case studies are included to illustrate the use of the process and framework. Several Appendices provide detailed information on existing cognitive system architectures; ethical, legal, and societal risk research; surety methods and technologies; and educing information research with a case study vignette. The process and framework provide a model for how cognitive systems research and full-scale product development can apply surety engineering to reduce perceived and actual risks.

Caudell, Thomas P. (University of New Mexico, Albuquerque, NM); Peercy, David Eugene; Caldera, Eva O. (University of New Mexico, Albuquerque, NM); Shaneyfelt, Wendy L.

2008-12-01T23:59:59.000Z

377

Microsoft Word - DOE Framework Final.docx  

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

Washington, D.C. 20585 Washington, D.C. 20585 Hanford Tank Waste Retrieval, Treatment, and Disposition Framework September 24, 2013 Hanford Tank Waste Retrieval, Treatment, and Disposition Framework ii This page intentionally left blank. Hanford Tank Waste Retrieval, Treatment, and Disposition Framework iii CONTENTS 1. Introduction ............................................................................................................................................. 1 Immobilizing Radioactive Tank Waste at the Office of River Protection .................................................. 1 Current System Design ........................................................................................................................... 2 Addressing Technical Risks and Challenges .......................................................................................... 2

378

Developing a Regulatory Framework for Extended Storage and Transportat...  

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

Storage and Transportation Developing a Regulatory Framework for Extended Storage and Transportation Outline: Current Regulatory Framework Future Regulatory Needs Technical...

379

Building Energy Transparency: A Framework for Implementing.....  

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

Energy Transparency: A Framework for Implementing... Energy Rating & Disclosure Policy Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and...

380

California Evaluation Framework | Building Energy Codes Program  

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

those studies. bpCaliforniaEvaluationFramework.pdf Document Details Affiliation: California Public Utilities Commission and the Project Advisory Group Focus: Adoption...

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

Gas sensor incorporating a porous framework  

DOE Patents (OSTI)

The disclosure provides sensor for gas sensing including CO.sub.2 gas sensors comprising a porous framework sensing area for binding an analyte gas.

Yaghi, Omar M.; Czaja, Alexander U.; Wang, Bo; Furukawa, Hiroyasu; Galatsis, Kosmas; Wang, Kang L.

2013-07-09T23:59:59.000Z

382

Metal Organic Frameworks for Clean Energy Applications  

Science Conference Proceedings (OSTI)

Symposium, Materials Issues in Nuclear Waste Management in the 21st Century. Presentation Title, Metal Organic Frameworks for Clean Energy Applications.

383

Enterprise Risk Management (ERM) Framework for Directives  

Directives, Delegations, and Requirements

Explains the new ERM framework for developing, revising, and reviewing directives. This memo directs the Office of Management to institutionalize ERM into the ...

2012-07-09T23:59:59.000Z

384

Initial Risk Analysis and Decision Making Framework  

Science Conference Proceedings (OSTI)

Commercialization of new carbon capture simulation initiative (CCSI) technology will include two key elements of risk management, namely, technical risk (will process and plant performance be effective, safe, and reliable) and enterprise risk (can project losses and costs be controlled within the constraints of market demand to maintain profitability and investor confidence). Both of these elements of risk are incorporated into the risk analysis subtask of Task 7. Thus far, this subtask has developed a prototype demonstration tool that quantifies risk based on the expected profitability of expenditures when retrofitting carbon capture technology on a stylized 650 MW pulverized coal electric power generator. The prototype is based on the selection of specific technical and financial factors believed to be important determinants of the expected profitability of carbon capture, subject to uncertainty. The uncertainty surrounding the technical performance and financial variables selected thus far is propagated in a model that calculates the expected profitability of investments in carbon capture and measures risk in terms of variability in expected net returns from these investments. Given the preliminary nature of the results of this prototype, additional work is required to expand the scope of the model to include additional risk factors, additional information on extant and proposed risk factors, the results of a qualitative risk factor elicitation process, and feedback from utilities and other interested parties involved in the carbon capture project. Additional information on proposed distributions of these risk factors will be integrated into a commercial implementation framework for the purpose of a comparative technology investment analysis.

Engel, David W.

2012-02-01T23:59:59.000Z

385

A Framework for Comparative Assessments of Energy Efficiency Policy Measures  

SciTech Connect

When policy makers propose new policies, there is a need to assess the costs and benefits of the proposed policy measures, to compare them to existing and alternative policies, and to rank them according to their effectiveness. In the case of equipment energy efficiency regulations, comparing the effects of a range of alternative policy measures requires evaluating their effects on consumers’ budgets, on national energy consumption and economics, and on the environment. Such an approach should be able to represent in a single framework the particularities of each policy measure and provide comparable results. This report presents an integrated methodological framework to assess prospectively the energy, economic, and environmental impacts of energy efficiency policy measures. The framework builds on the premise that the comparative assessment of energy efficiency policy measures should (a) rely on a common set of primary data and parameters, (b) follow a single functional approach to estimate the energy, economic, and emissions savings resulting from each assessed measure, and (c) present results through a set of comparable indicators. This framework elaborates on models that the U.S. Department of Energy (DOE) has used in support of its rulemakings on mandatory energy efficiency standards. In addition to a rigorous analysis of the impacts of mandatory standards, DOE compares the projected results of alternative policy measures to those projected to be achieved by the standards. The framework extends such an approach to provide a broad, generic methodology, with no geographic or sectoral limitations, that is useful for evaluating any type of equipment energy efficiency market intervention. The report concludes with a demonstration of how to use the framework to compare the impacts estimated for twelve policy measures focusing on increasing the energy efficiency of gas furnaces in the United States.

Blum, Helcio; Atkinson, Barbara; Lekov, Alex

2011-05-24T23:59:59.000Z

386

Demand Response Valuation Frameworks Paper  

Science Conference Proceedings (OSTI)

While there is general agreement that demand response (DR) is a valued component in a utility resource plan, there is a lack of consensus regarding how to value DR. Establishing the value of DR is a prerequisite to determining how much and what types of DR should be implemented, to which customers DR should be targeted, and a key determinant that drives the development of economically viable DR consumer technology. Most approaches for quantifying the value of DR focus on changes in utility system revenue requirements based on resource plans with and without DR. This ''utility centric'' approach does not assign any value to DR impacts that lower energy and capacity prices, improve reliability, lower system and network operating costs, produce better air quality, and provide improved customer choice and control. Proper valuation of these benefits requires a different basis for monetization. The review concludes that no single methodology today adequately captures the wide range of benefits and value potentially attributed to DR. To provide a more comprehensive valuation approach, current methods such as the Standard Practice Method (SPM) will most likely have to be supplemented with one or more alternative benefit-valuation approaches. This report provides an updated perspective on the DR valuation framework. It includes an introduction and four chapters that address the key elements of demand response valuation, a comprehensive literature review, and specific research recommendations.

Heffner, Grayson

2009-02-01T23:59:59.000Z

387

Multiscale modeling for fluid transport in nanosystems.  

SciTech Connect

Atomistic-scale behavior drives performance in many micro- and nano-fluidic systems, such as mircrofludic mixers and electrical energy storage devices. Bringing this information into the traditionally continuum models used for engineering analysis has proved challenging. This work describes one such approach to address this issue by developing atomistic-to-continuum multi scale and multi physics methods to enable molecular dynamics (MD) representations of atoms to incorporated into continuum simulations. Coupling is achieved by imposing constraints based on fluxes of conserved quantities between the two regions described by one of these models. The impact of electric fields and surface charges are also critical, hence, methodologies to extend finite-element (FE) MD electric field solvers have been derived to account for these effects. Finally, the continuum description can have inconsistencies with the coarse-grained MD dynamics, so FE equations based on MD statistics were derived to facilitate the multi scale coupling. Examples are shown relevant to nanofluidic systems, such as pore flow, Couette flow, and electric double layer.

Lee, Jonathan W.; Jones, Reese E.; Mandadapu, Kranthi Kiran; Templeton, Jeremy Alan; Zimmerman, Jonathan A.

2013-09-01T23:59:59.000Z

388

Power transmission investment analysis: a new financial Evaluation framework for South Africa  

Science Conference Proceedings (OSTI)

A proposed framework for power transmission expansion projects in South Africa incorporates the modeling of project options and uncertainties, Monte Carlo simulations, real option analysis, and decision analysis, based on a foundation of strategic analysis. (author)

Maboke, Silky Ntombifuthi; Kachienga, Michael Ogembo

2008-05-15T23:59:59.000Z

389

A unified optimization framework for robust pseudo-relevance feedback algorithms  

Science Conference Proceedings (OSTI)

We present a flexible new optimization framework for finding effective, reliable pseudo-relevance feedback models that unifies existing complementary approaches in a principled way. The result is an algorithmic approach that not only brings together ... Keywords: optimization, query expansion

Joshua V. Dillon; Kevyn Collins-Thompson

2010-10-01T23:59:59.000Z

390

A Revised Framework for Analyzing Soil Moisture Memory in Climate Data: Derivation and Interpretation  

Science Conference Proceedings (OSTI)

A revised framework for the analysis of soil moisture memory characteristics of climate models and observational data is derived from the approach proposed by Koster and Suarez. The resulting equation allows the expression of the month-to-month ...

Sonia I. Seneviratne; Randal D. Koster

2012-02-01T23:59:59.000Z

391

A Dual Mass Flux Framework for Boundary Layer Convection. Part II: Clouds  

Science Conference Proceedings (OSTI)

This paper presents the extension of the eddy diffusivity mass flux (EDMF) framework for turbulent transport into the statistical modeling of boundary layer clouds. The advection–diffusion decomposition that defines EDMF is projected onto the ...

Roel A. J. Neggers

2009-06-01T23:59:59.000Z

392

A Global Land System Framework for Integrated Climate-Change Assessments  

E-Print Network (OSTI)

Land ecosystems play a major role in the global cycles of energy, water, carbon and nutrients. A Global Land System (GLS) framework has been developed for the Integrated Global Systems Model Version 2 (IGSM2) to simulate ...

Schlosser, C. Adam

393

From patterns to frameworks to parallel programs  

Science Conference Proceedings (OSTI)

Object-oriented programming, design patterns, and frameworks are abstraction techniques that have been used to reduce the complexity of sequential programming. This paper describes our approach of applying these three techniques to the more difficult ... Keywords: design patterns, object-oriented frameworks, parallel programming systems

S. MacDonald; J. Anvik; S. Bromling; J. Schaeffer; D. Szafron; K. Tan

2002-12-01T23:59:59.000Z

394

Framework Oriented Approach to Eco-Tourism  

Science Conference Proceedings (OSTI)

This paper discusses an approach for eco-tourism. The paper also addresses the cost-benefit analysis of different parameters which can help in designing a framework. The principles of eco tourism emphasizes on the win-win situation for both the Commercial ... Keywords: Cost-Benefit Analysis, Eco-Tourism, Framework for Eco-Tourism, Green Technology, Stakeholders Issues

Sanjay Mohapatra, Tripti Naswa

2013-01-01T23:59:59.000Z

395

Control and Navigation Framework for Quadrotor Helicopters  

Science Conference Proceedings (OSTI)

This paper presents the development of a nonlinear quadrotor simulation framework together with a nonlinear controller. The quadrotor stabilization and navigation problems are tackled using a nested loops control architecture. A nonlinear Backstepping ... Keywords: Backstepping, Gazebo, Navigation, Nonlinear control, Open dynamics engine, Quadrotor, Simulation framework

Amr Nagaty; Sajad Saeedi; Carl Thibault; Mae Seto; Howard Li

2013-04-01T23:59:59.000Z

396

Cellular Energy Efficiency Evaluation Framework (Invited Paper)  

E-Print Network (OSTI)

Cellular Energy Efficiency Evaluation Framework (Invited Paper) Gunther Auer, Vito Giannini, Istv, the power consumption of the entire system needs to be captured and an appropriate energy efficiency evaluation frameworks are discussed, such that the energy efficiency of the entire network comprising

Stevenson, Paul

397

A framework for knowledge-based team training  

E-Print Network (OSTI)

Teamwork is crucial to many disciplines, from activities such as organized sports to economic and military organizations. Team training is difficult and as yet there are few automated tools to assist in the training task. As with the training of individuals, effective training depends upon practice and proper training protocols. In this research, we defined a team training framework for constructing team training systems in domains involving command and control teams. This team training framework provides an underlying model of teamwork and programming interfaces to provide services that ease the construction of team training systems. Also, the framework enables experimentation with training protocols and coaching to be conducted more readily, as team training systems incorporating new protocols or coaching capabilities can be more easily built. For this framework (called CAST-ITT) we developed an underlying intelligent agent architecture known as CAST (Collaborative Agents Simulating Teamwork). CAST provides the underlying model of teamwork and agents to simulate virtual team members. CAST-ITT (Intelligent Team Trainer) uses CAST to also monitor trainees, and support performance assessment and coaching for the purposes of evaluating the performance of a trainee as a member of a team. CAST includes a language for describing teamwork called MALLET (Multi-Agent Logic Language for Encoding Teamwork). MALLET allows us to codify the behaviors of team members (both as virtual agents and as trainees) for use by CAST. In demonstrating CAST-ITT through an implemented team training system called TWP-DDD we have shown that a team training system can be built that uses the framework (CAST-ITT) and has good performance and can be used for achieving real world training objectives.

Miller, Michael Scott

2006-08-01T23:59:59.000Z

398

Complexity Economics: A Different Framework  

E-Print Network (OSTI)

in the gross profits References Aghion P, Howitt P (1992) A model of growth through creative destruction IV van Dijk TWP (1994) The limits of patent protection. Essays on the Economics of Intellectual

Tesfatsion, Leigh

399

GRAAL --- A Development Framework for Embedded Graphics Accelerators  

E-Print Network (OSTI)

This paper presents a versatile hardware/software cosimulation and co-design environment for embedded 3D graphics accelerators. The GRAphics AcceLerator design exploration framework (GRAAL) is an open system which offers a coherent development methodology based on an extensive library of SystemC RTL models of graphics pipeline components. GRAAL incorporates tools to assist in the visual debugging of the graphics algorithms implemented in hardware, and to estimate the performance in terms of throughput, power consumption, and area.

Crisu Cotofana Vassiliadis; D. Crisu; S. D. Cotofana; S. Vassiliadis

2004-01-01T23:59:59.000Z

400

Framework for Evaluating Cyber Security Posture for Power Delivery Systems  

Science Conference Proceedings (OSTI)

While many asset owners and operators are performing self-assessments of their control systems, the methods used vary widely across the electric sector. This lack of consistent criteria and metrics makes it difficult to benchmark and compare the cyber security posture of power delivery systems.The objective of this technical update is to develop an evaluation framework that uses both the Department of Energy (DOE) Electricity Subsector Cybersecurity Capability Maturity Model (ES-C2M2) ...

2013-11-28T23:59:59.000Z

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

The Framework for Approximate Queries on Simulation Data  

SciTech Connect

AQSim is a system intended to enable scientists to query and analyze a large volume of scientific simulation data. The system uses the state of the art in approximate query processing techniques to build a novel framework for progressive data analysis. These techniques are used to define a multi-resolution index, where each node contains multiple models of the data. The benefits of these models are two-fold: (1) they are compact representations, reconstructing only the information relevant to the analysis, and (2) the variety of models capture different aspects of the data which may be of interest to the user but are not readily apparent in their raw form. To be able to deal with the data interactively, AQSim allows the scientist to make an informed tradeoff between query response accuracy and time. In this paper, we present the framework of AQSim with a focus on its architectural design. We also show the results from an initial proof-of-concept prototype developed at LLNL. The presented framework is generic enough to handle more than just simulation data.

Abdulla, G; Baldwin, C; Critchlow, T; Kamimura, R; Lee, B; Musick, R; Snapp, R; Tang, N

2001-09-27T23:59:59.000Z

402

Interoperability Context-Setting Framework  

SciTech Connect

As the deployment of automation technology advances, it touches upon many areas of our corporate and personal lives. A trend is emerging where systems are growing to the extent that integration is taking place with other systems to provide even greater capabilities more efficiently and effectively. GridWise™ provides a vision for this type of integration as it applies to the electric system. Imagine a time in the not too distant future when homeowners can offer the management of their electricity demand to participate in a more efficient and environmentally friendly operation of the electric power grid. They will do this using technology that acts on their behalf in response to information from other components of the electric system. This technology will recognize their preferences to parameters such as comfort and the price of energy to form responses that optimize the local need to a signal that satisfies a higher-level need in the grid. For example, consider a particularly hot day with air stagnation in an area with a significant dependence on wind generation. To manage the forecasted peak electricity demand, the bulk system operator issues a critical peak price warning. Their automation systems alert electric service providers who distribute electricity from the wholesale electricity system to consumers. In response, the electric service providers use their automation systems to inform consumers of impending price increases for electricity. This information is passed to an energy management system at the premises, which acts on the homeowner’s behalf, to adjust the electricity usage of the onsite equipment (which might include generation from such sources as a fuel cell). The objective of such a system is to honor the agreement with the electricity service provider and reduce the homeowner’s bill while keeping the occupants as comfortable as possible. This will include actions such as moving the thermostat on the heating, ventilation, and air-conditioning (HVAC) unit up several degrees. The resulting load reduction becomes part of an aggregated response from the electricity service provider to the bulk system operator who is now in a better position to manage total system load with available generation. Looking across the electric system, from generating plants, to transmission substations, to the distribution system, to factories, office parks, and buildings, automation is growing, and the opportunities for unleashing new value propositions are exciting. How can we facilitate this change and do so in a way that ensures the reliability of electric resources for the wellbeing of our economy and security? The GridWise Architecture Council (GWAC) mission is to enable interoperability among the many entities that interact with the electric power system. A good definition of interoperability is, “The capability of two or more networks, systems, devices, applications, or components to exchange information between them and to use the information so exchanged.” As a step in the direction of enabling interoperability, the GWAC proposes a context-setting framework to organize concepts and terminology so that interoperability issues can be identified and debated, improvements to address issues articulated, and actions prioritized and coordinated across the electric power community.

Widergren, Steven E.; Hardin, Dave; Ambrosio, Ron; Drummond, R.; Gunther, E.; Gilchrist, Grant; Cohen, David

2007-01-31T23:59:59.000Z

403

IDebug: An Advanced Debugging Framework for Java  

E-Print Network (OSTI)

IDebug, the Infospheres debugging framework, is an advanced debugging framework for Java. This framework provides the standard core debugging and specification constructs such as assertions, debug levels and categories, stack traces, and specialized exceptions. Debugging functionality can be fine-tuned to a per-thread and/or a per-class basis, debugging contexts can be stored to and recovered from persistent storage, and several aspects of the debugging run-time are configurable at the meta-level. Additionally, the framework is designed for extensibility. Planned improvements include support for debugging distributed object systems via currying call stacks across virtual machine contexts and debug information logging with a variety of networking media including unicast, multicast, RMI, distributed events, and JavaSpaces. Finally, we are adding support for debugging mobile agent systems by providing mobile debug logs. 1 Introduction Programming technologies have evolved greatly over th...

Joseph R. Kiniry

1998-01-01T23:59:59.000Z

404

A proposed open cognitive architecture framework  

Science Conference Proceedings (OSTI)

This paper describes a proposed general-purpose cognitive architecture known as the Open Cognitive Architecture Framework (OpenCAF) capable of representing complex intelligent behavior for a variety of applications. This new cognitive architecture ...

Jeffrey S. Steinman; Craig N. Lammers; Maria E. Valinski

2009-12-01T23:59:59.000Z

405

Aranea: web framework construction and integration kit  

Science Conference Proceedings (OSTI)

Currently there exist dozens of web controller frameworks that are incompatible, but at the same time have large portions of overlapping functionality that is implemented over and over again. Web programmers are facing limitations on code reuse, application ...

Oleg Mürk; Jevgeni Kabanov

2006-08-01T23:59:59.000Z

406

A framework for technology forecasting and visualization  

E-Print Network (OSTI)

This paper presents a novel framework for supporting the development of well-informed research policies and plans. The proposed methodology is based on the use of bibliometrics; i.e., analysis is conducted using information ...

Woon, Wei Lee

407

A Framework for Technology Forecasting and Visualization  

E-Print Network (OSTI)

This paper presents a novel framework for supporting the development of well-informed research policies and plans. The proposed methodology is based on the use of bibliometrics; i.e., analysis is conducted using information ...

Woon, Wei Lee

408

A Bayesian Framework for Multimodel Regression  

Science Conference Proceedings (OSTI)

This paper presents a framework based on Bayesian regression and constrained least squares methods for incorporating prior beliefs in a linear regression problem. Prior beliefs are essential in regression theory when the number of predictors is ...

Timothy DelSole

2007-06-01T23:59:59.000Z

409

Netgauge: a network performance measurement framework  

Science Conference Proceedings (OSTI)

This paper introduces Netgauge, an extensible open-source framework for implementing network benchmarks. The structure of Netgauge abstracts and explicitly separates communication patterns from communication modules. As a result of this separation of ...

Torsten Hoefler; Torsten Mehlan; Andrew Lumsdaine; Wolfgang Rehm

2007-09-01T23:59:59.000Z

410

Flexible Residential Smart Grid Simulation Framework  

E-Print Network (OSTI)

Different scheduling and coordination algorithms controlling household appliances’ operations can potentially lead to energy consumption reduction and/or load balancing in conjunction with different electricity pricing methods used in smart grid programs. In order to easily implement different algorithms and evaluate their efficiency against other ideas, a flexible simulation framework is desirable in both research and business fields. However, such a platform is currently lacking or underdeveloped. In this thesis, we provide a simulation framework to focus on demand side residential energy consumption coordination in response to different pricing methods. This simulation framework, equipped with an appliance consumption library using realistic values, aims to closely represent the average usage of different types of appliances. The simulation results of traditional usage yield close matching values compared to surveyed real life consumption records. Several sample coordination algorithms, pricing schemes, and communication scenarios are also implemented to illustrate the use of the simulation framework.

Wang Xiang; Thomas Kunz; Marc St-hilaire; Wang Xiang

2013-01-01T23:59:59.000Z

411

A flexible design framework for autonomous mowing  

E-Print Network (OSTI)

This work outlines the creation of a flexible design framework for autonomous mowing to meet changing customer needs and functionality across a spectrum of applications from residential areas to sport complexes. The thesis ...

Kraft, Justin (Justin A.)

2011-01-01T23:59:59.000Z

412

Building problem solving environments with the arches framework  

Science Conference Proceedings (OSTI)

The computational problems that scientists face are rapidly escalating in size and scope. Moreover, the computer systems used to solve these problems are becoming significantly more complex than the familiar, well-understood sequential model on their desktops. While it is possible to re-train scientists to use emerging high-performance computing (HPC) models, it is much more effective to provide them with a higher-level programming environment that has been specialized to their particular domain. By fostering interaction between HPC specialists and the domain scientists, problem-solving environments (PSEs) provide a collaborative environment. A PSE environment allows scientists to focus on expressing their computational problem while the PSE and associated tools support mapping that domain-specific problem to a high-performance computing system. This article describes Arches, an object-oriented framework for building domain-specific PSEs. The framework was designed to support a wide range of problem domains and to be extensible to support very different high-performance computing targets. To demonstrate this flexibility, two PSEs have been developed from the Arches framework to solve problem in two different domains and target very different computing platforms. The Coven PSE supports parallel applications that require large-scale parallelism found in cost-effective Beowulf clusters. In contrast, RCADE targets FPGA-based reconfigurable computing and was originally designed to aid NASA Earth scientists studying satellite instrument data.

Debardeleben, Nathan [Los Alamos National Laboratory; Sass, Ron [U NORTH CAROLINA; Stanzione, Jr., Daniel [ASU; Ligon, Ill, Walter [CLEMSON UNIV

2009-01-01T23:59:59.000Z

413

Development of long-term performance models for radioactive waste forms  

SciTech Connect

The long-term performance of solid radioactive waste is measured by the release rate of radionuclides into the environment, which depends on corrosion or weathering rates of the solid waste form. The reactions involved depend on the characteristics of the solid matrix containing the radioactive waste, the radionuclides of interest, and their interaction with surrounding geologic materials. This chapter describes thermo-hydro-mechanical and reactive transport models related to the long-term performance of solid radioactive waste forms, including metal, ceramic, glass, steam reformer and cement. Future trends involving Monte-Carlo simulations and coupled/multi-scale process modeling are also discussed.

Bacon, Diana H.; Pierce, Eric M.

2011-03-22T23:59:59.000Z

414

Shiva: An astronomical data analysis framework  

SciTech Connect

A key online and off-line software component of the Sloan Digital Sky Survey (SDSS) is Shiva. Shiva provides a readily extendible framework upon which the SDSS data reduction pipeline software is built. In this paper we present an introduction to the Shiva data analysis framework. We briefly discuss the features and the inherent prototyping and rapid development capabilities that make Shiva an integral part in the on-going development of SDSS software.

Sergey, G.; Berman, E.; Huang, C.H.; Kent, S.; Newberg, H; Nicinski, T.; Petravick, D; Stoughton, C. [Fermi National Accelerator Lab., Batavia, IL (United States); Lupton, R. [Princeton Univ., NJ (United States). Dept. of Astronomy

1995-12-01T23:59:59.000Z

415

Geometric Massive Gravity in Multi-Connection Framework  

E-Print Network (OSTI)

What is the right way to interpret a massive graviton? We generalize the kinematical framework of general relativity to multiple connections. The average of the connections is itself a connection and plays the role of the canonical connection in standard General Relativity. At the level of dynamics, the simplest choice of the Einstein-Hilbert action is indistinguishable from the single-connection case. However, inspired by Weyl geometry, we show how one can construct massive gravity to all orders in perturbation theory compatible with the de Rham-Gabadadze-Tolley ghost-free model. We conclude that the mass of the graviton can be interpreted as a geometrical property of spacetime arising from two connections. Furthermore in the multi-connection framework there is no ambiguity in the definition of physical metric and consequently coupling to matter.

Nima Khosravi

2013-09-09T23:59:59.000Z

416

A framework for the assessment of severe accident management strategies  

SciTech Connect

Severe accident management can be defined as the use of existing and/or altemative resources, systems and actors to prevent or mitigate a core-melt accident. For each accident sequence and each combination of severe accident management strategies, there may be several options available to the operator, and each involves phenomenological and operational considerations regarding uncertainty. Operational uncertainties include operator, system and instrumentation behavior during an accident. A framework based on decision trees and influence diagrams has been developed which incorporates such criteria as feasibility, effectiveness, and adverse effects, for evaluating potential severe accident management strategies. The framework is also capable of propagating both data and model uncertainty. It is applied to several potential strategies including PWR cavity flooding, BWR drywell flooding, PWR depressurization and PWR feed and bleed.

Kastenberg, W.E. [ed.; Apostolakis, G.; Dhir, V.K. [California Univ., Los Angeles, CA (United States). Dept. of Mechanical, Aerospace and Nuclear Engineering] [and others

1993-09-01T23:59:59.000Z

417

Framework Application for Core Edge Transport Simulation (FACETS)  

SciTech Connect

The goal of the FACETS project (Framework Application for Core-Edge Transport Simulations) was to provide a multiphysics, parallel framework application (FACETS) that will enable whole-device modeling for the U.S. fusion program, to provide the modeling infrastructure needed for ITER, the next step fusion confinement device. Through use of modern computational methods, including component technology and object oriented design, FACETS is able to switch from one model to another for a given aspect of the physics in a flexible manner. This enables use of simplified models for rapid turnaround or high-fidelity models that can take advantage of the largest supercomputer hardware. FACETS does so in a heterogeneous parallel context, where different parts of the application execute in parallel by utilizing task farming, domain decomposition, and/or pipelining as needed and applicable. ParaTools, Inc. was tasked with supporting the performance analysis and tuning of the FACETS components and framework in order to achieve the parallel scaling goals of the project. The TAU Performance System�������������������������������® was used for instrumentation, measurement, archiving, and profile / tracing analysis. ParaTools, Inc. also assisted in FACETS performance engineering efforts. Through the use of the TAU Performance System, ParaTools provided instrumentation, measurement, analysis and archival support for the FACETS project. Performance optimization of key components has yielded significant performance speedups. TAU was integrated into the FACETS build for both the full coupled application and the UEDGE component. The performance database provided archival storage of the performance regression testing data generated by the project, and helped to track improvements in the software development.

Dr. Allen D. Malony; Dr. Sameer S. Shende; Dr. Kevin A. Huck; Mr. Alan Morris, and Mr. Wyatt Spear

2012-03-14T23:59:59.000Z

418

An Assessment of Integrated Health Management Frameworks  

Science Conference Proceedings (OSTI)

In order to meet the ever increasing demand for energy, the United States nuclear industry is turning to life extension of existing nuclear power plants (NPPs). Economically ensuring the safe, secure, and reliable operation of aging NPPs presents many challenges. The 2009 Light Water Reactor Sustainability Workshop identified online monitoring of active and structural components as essential to better understanding and management of the challenges posed by aging NPPs. Additionally, there is increasing adoption of condition-based maintenance (CBM) for active components in NPPs. These techniques provide a foundation upon which a variety of advanced online surveillance, diagnostic, and prognostic techniques can be deployed to continuously monitor and assess the health of NPP systems and components. The next step in the development of advanced online monitoring is to move beyond CBM to estimating the remaining useful life of active components using prognostic tools. Deployment of prognostic health management (PHM) on the scale of an NPP requires the use of an integrated health management (IHM) framework - a software product (or suite of products) used to manage the necessary elements needed for a complete implementation of online monitoring and prognostics. This paper provides a thoughtful look at the desirable functions and features of IHM architectures. A full PHM system involves several modules, including data acquisition, system modeling, fault detection, fault diagnostics, system prognostics, and advisory generation (operations and maintenance planning). The standards applicable to PHM applications are indentified and summarized. A list of evaluation criteria for PHM software products, developed to ensure scalability of the toolset to an environment with the complexity of an NPP, is presented. Fourteen commercially available PHM software products are identified and classified into four groups: research tools, PHM system development tools, deployable architectures, and peripheral tools.

Lybeck, Nancy; Coble, Jamie B.; Tawfik, Magdy; Bond, Leonard J.

2012-05-18T23:59:59.000Z

419

International Framework for Nuclear Energy Cooperation to Hold...  

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

Framework for Nuclear Energy Cooperation to Hold Ministerial-Level Meeting Sept. 29 in Warsaw, Poland International Framework for Nuclear Energy Cooperation to Hold...

420

A Framework for Comparative Assessments of Energy Efficiency...  

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

A Framework for Comparative Assessments of Energy Efficiency Policy Measures Title A Framework for Comparative Assessments of Energy Efficiency Policy Measures Publication Type...

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A Methodological Framework for Comparative Assessments of Equipment...  

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

Methodological Framework for Comparative Assessments of Equipment Energy Efficiency Policy Measures Title A Methodological Framework for Comparative Assessments of Equipment Energy...

422

Deputy Secretary Poneman to Attend International Framework for...  

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

to Attend International Framework for Nuclear Energy Cooperation Meeting in Jordan Deputy Secretary Poneman to Attend International Framework for Nuclear Energy Cooperation Meeting...

423

A Statistical Pattern Analysis Framework for Rooftop Unit Diagnostics  

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

A Statistical Pattern Analysis Framework for Rooftop Unit Diagnostics Title A Statistical Pattern Analysis Framework for Rooftop Unit Diagnostics Publication Type Journal Article...

424

Online Monitoring Technical Basis and Analysis Framework for...  

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

Online Monitoring Technical Basis and Analysis Framework for Emergency Diesel Generators-Interim Report for FY 2013 Online Monitoring Technical Basis and Analysis Framework for...

425

Security Framework for Control System Data Classification and...  

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

Framework for Control System Data Classification and Protection Security Framework for Control System Data Classification and Protection This document presents a data...

426

3rd Cybersecurity Framework Workshop - July 10-12 2013 ...  

Science Conference Proceedings (OSTI)

... Cybersecurity Framework, July 1, 2013 The purpose of this document is to define the overall Framework and provide guidance on its usage. ...

2013-07-19T23:59:59.000Z

427

A Systems Framework for Assessing Plumbing Products-Related Water...  

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

A Systems Framework for Assessing Plumbing Products-Related Water Conservation Title A Systems Framework for Assessing Plumbing Products-Related Water Conservation Publication Type...

428

Recovery Act: Smart Grid Interoperability Standards and Framework...  

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

Act: Smart Grid Interoperability Standards and Framework Recovery Act: Smart Grid Interoperability Standards and Framework Congressional Testimony Recovery Act Recovery Act...

429

A flexible framework for secure and efficient program obfuscation.  

SciTech Connect

In this paper, we present a modular framework for constructing a secure and efficient program obfuscation scheme. Our approach, inspired by the obfuscation with respect to oracle machines model of [4], retains an interactive online protocol with an oracle, but relaxes the original computational and storage restrictions. We argue this is reasonable given the computational resources of modern personal devices. Furthermore, we relax the information-theoretic security requirement for computational security to utilize established cryptographic primitives. With this additional flexibility we are free to explore different cryptographic buildingblocks. Our approach combines authenticated encryption with private information retrieval to construct a secure program obfuscation framework. We give a formal specification of our framework, based on desired functionality and security properties, and provide an example instantiation. In particular, we implement AES in Galois/Counter Mode for authenticated encryption and the Gentry-Ramzan [13]constant communication-rate private information retrieval scheme. We present our implementation results and show that non-trivial sized programs can be realized, but scalability is quickly limited by computational overhead. Finally, we include a discussion on security considerations when instantiating specific modules.

Solis, John Hector

2013-03-01T23:59:59.000Z

430

Data Assimilation Tools for CO2 Reservoir Model Development – A Review of Key Data Types, Analyses, and Selected Software  

SciTech Connect

Pacific Northwest National Laboratory (PNNL) has embarked on an initiative to develop world-class capabilities for performing experimental and computational analyses associated with geologic sequestration of carbon dioxide. The ultimate goal of this initiative is to provide science-based solutions for helping to mitigate the adverse effects of greenhouse gas emissions. This Laboratory-Directed Research and Development (LDRD) initiative currently has two primary focus areas—advanced experimental methods and computational analysis. The experimental methods focus area involves the development of new experimental capabilities, supported in part by the U.S. Department of Energy’s (DOE) Environmental Molecular Science Laboratory (EMSL) housed at PNNL, for quantifying mineral reaction kinetics with CO2 under high temperature and pressure (supercritical) conditions. The computational analysis focus area involves numerical simulation of coupled, multi-scale processes associated with CO2 sequestration in geologic media, and the development of software to facilitate building and parameterizing conceptual and numerical models of subsurface reservoirs that represent geologic repositories for injected CO2. This report describes work in support of the computational analysis focus area. The computational analysis focus area currently consists of several collaborative research projects. These are all geared towards the development and application of conceptual and numerical models for geologic sequestration of CO2. The software being developed for this focus area is referred to as the Geologic Sequestration Software Suite or GS3. A wiki-based software framework is being developed to support GS3. This report summarizes work performed in FY09 on one of the LDRD projects in the computational analysis focus area. The title of this project is Data Assimilation Tools for CO2 Reservoir Model Development. Some key objectives of this project in FY09 were to assess the current state-of-the-art in reservoir model development, the data types and analyses that need to be performed in order to develop and parameterize credible and robust reservoir simulation models, and to review existing software that is applicable to these analyses. This report describes this effort and highlights areas in which additional software development, wiki application extensions, or related GS3 infrastructure development may be warranted.

Rockhold, Mark L.; Sullivan, E. C.; Murray, Christopher J.; Last, George V.; Black, Gary D.

2009-09-30T23:59:59.000Z

431

Load forecasting framework of electricity consumptions for an Intelligent Energy Management System in the user-side  

Science Conference Proceedings (OSTI)

This work presents an electricity consumption-forecasting framework configured automatically and based on an Adaptative Neural Network Inference System (ANFIS). This framework is aimed to be implemented in industrial plants, such as automotive factories, ... Keywords: ANFIS, Forecasting, Genetic algorithm, Intelligent EMS, Modelling

Juan J. Cárdenas; Luis Romeral; Antonio Garcia; Fabio Andrade

2012-04-01T23:59:59.000Z

432

CCSI and the role of advanced computing in accelerating the commercial deployment of carbon capture systems  

SciTech Connect

The Carbon Capture Simulation Initiative is developing state-of-the-art computational modeling and simulation tools to accelerate the commercialization of carbon capture technology. The CCSI Toolset consists of an integrated multi-scale modeling and simulation framework, which includes extensive use of reduced order models (ROMs) and a comprehensive uncertainty quantification (UQ) methodology. This paper focuses on the interrelation among high performance computing, detailed device simulations, ROMs for scale-bridging, UQ and the integration framework.

Miller, D.; Agarwal, D.; Sun, X.; Tong, C.

2011-01-01T23:59:59.000Z

433

Introduction to Framework | Open Energy Information  

Open Energy Info (EERE)

Introduction to Framework Introduction to Framework (Redirected from Introduction to Methodology) Jump to: navigation, search Stage 1 LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country 2.3. Assess public and private sector capacity to support initiatives 2.4. Assess and improve the national GHG inventory and other

434

Complete Security Framework for Wireless Sensor Networks  

E-Print Network (OSTI)

Security concern for a Sensor Networks and level of security desired may differ according to application specific needs where the sensor networks are deployed. Till now, most of the security solutions proposed for sensor networks are layer wise i.e a particular solution is applicable to single layer itself. So, to integrate them all is a new research challenge. In this paper we took up the challenge and have proposed an integrated comprehensive security framework that will provide security services for all services of sensor network. We have added one extra component i.e. Intelligent Security Agent (ISA) to assess level of security and cross layer interactions. This framework has many components like Intrusion Detection System, Trust Framework, Key Management scheme and Link layer communication protocol. We have also tested it on three different application scenarios in Castalia and Omnet++ simulator.

Sharma, Kalpana; Kuldeep,

2009-01-01T23:59:59.000Z

435

Introduction to Framework | Open Energy Information  

Open Energy Info (EERE)

Introduction to Framework Introduction to Framework Jump to: navigation, search Stage 1 LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country 2.3. Assess public and private sector capacity to support initiatives 2.4. Assess and improve the national GHG inventory and other economic and resource data as needed for LEDS development

436

A computational framework for uncertainty quantification and stochastic optimization in unit commitment with wind power generation.  

Science Conference Proceedings (OSTI)

We present a computational framework for integrating a state-of-the-art numerical weather prediction (NWP) model in stochastic unit commitment/economic dispatch formulations that account for wind power uncertainty. We first enhance the NWP model with an ensemble-based uncertainty quantification strategy implemented in a distributed-memory parallel computing architecture. We discuss computational issues arising in the implementation of the framework and validate the model using real wind-speed data obtained from a set of meteorological stations. We build a simulated power system to demonstrate the developments.

Constantinescu, E. M; Zavala, V. M.; Rocklin, M.; Lee, S.; Anitescu, M. (Mathematics and Computer Science); (Univ. of Chicago); (New York Univ.)

2011-02-01T23:59:59.000Z

437

A Bayesian Framework for Combining Valuation Estimates  

E-Print Network (OSTI)

Obtaining more accurate equity value estimates is the starting point for stock selection, value-based indexing in a noisy market, and beating benchmark indices through tactical style rotation. Unfortunately, discounted cash flow, method of comparables, and fundamental analysis typically yield discrepant valuation estimates. Moreover, the valuation estimates typically disagree with market price. Can one form a superior valuation estimate by averaging over the individual estimates, including market price? This article suggests a Bayesian framework for combining two or more estimates into a superior valuation estimate. The framework justifies the common practice of averaging over several estimates to arrive at a final point estimate.

Kenton K. Yee

2007-07-24T23:59:59.000Z

438

A spatially-distributed cost-effectiveness analysis framework for controlling water pollution  

Science Conference Proceedings (OSTI)

With the aim of comparing various agro-environmental measures to control pesticide pollution in surface waters, we propose a methodological framework for spatially-distributed cost-effectiveness analysis. We use the Soil and Water Assessment Tool (SWAT) ... Keywords: Bio-economic modelling, Cost-effectiveness analysis, Integrated modelling, Pesticides, SWAT

Jean-Marie Lescot; Paul Bordenave; Kevin Petit; Odile Leccia

2013-03-01T23:59:59.000Z

439

Evaluation Framework and Tools for Distributed Energy Resources  

E-Print Network (OSTI)

Glossary Executive Summary Introduction Total Societal Impact Framework i iii v vii Effects of Distributed Energy

Gumerman, Etan Z.; Bharvirkar, Ranjit R.; LaCommare, Kristina Hamachi; Marnay, Chris

2003-01-01T23:59:59.000Z

440

Building Technologies Office: Residential Furnaces and Boilers Framework  

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

Residential Furnaces Residential Furnaces and Boilers Framework Meeting to someone by E-mail Share Building Technologies Office: Residential Furnaces and Boilers Framework Meeting on Facebook Tweet about Building Technologies Office: Residential Furnaces and Boilers Framework Meeting on Twitter Bookmark Building Technologies Office: Residential Furnaces and Boilers Framework Meeting on Google Bookmark Building Technologies Office: Residential Furnaces and Boilers Framework Meeting on Delicious Rank Building Technologies Office: Residential Furnaces and Boilers Framework Meeting on Digg Find More places to share Building Technologies Office: Residential Furnaces and Boilers Framework Meeting on AddThis.com... About Standards & Test Procedures Implementation, Certification & Enforcement

Note: This page contains sample records for the topic "multi-scale modeling framework" 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

A compiler framework for speculative optimizations  

Science Conference Proceedings (OSTI)

Speculative execution, such as control speculation or data speculation, is an effective way to improve program performance. Using edge/path profile information or simple heuristic rules, existing compiler frameworks can adequately incorporate and exploit ... Keywords: Data speculation, partial redundancy elimination, register promotion, speculative SSA form, speculative weak update

Jin Lin; Tong Chen; Wei-Chung Hsu; Pen-Chung Yew; Roy Dz-Ching Ju; Tin-Fook Ngai; Sun Chan

2004-09-01T23:59:59.000Z

442

Privacy, Technology, and Aging: A Proposed Framework  

E-Print Network (OSTI)

the development, adoption, and use of home-based ubiquitous technologies for older adults. We began with a five, adoption, and use of home-based ubiquitous technologies are highly contextual, individualized and aging can inform the development of a privacy framework for home-based technologies that can contribute

Camp, L. Jean

443

A Framework for Measuring Supercomputer Productivity  

Science Conference Proceedings (OSTI)

We propose a framework for measuring the productivity of high performance computing (HPC) systems, based on common economic definitions of productivity and on utility theory. We discuss how these definitions can capture essential aspects of HPC systems, ... Keywords: High-performance computing, Productivity, benchmarks, performance metrics

Marc Snir; David A. Bader

2004-11-01T23:59:59.000Z

444

An autonomic routing framework for sensor networks  

Science Conference Proceedings (OSTI)

Current routing services for sensor networks are often designed for specific applications and network conditions, thus have difficulty in adapting to application and network dynamics. This paper proposes an autonomic framework to promote the adaptivity ... Keywords: Autonomic routing, Feature functions, Monitoring policies, Sensor networks

Yu He; Cauligi S. Raghavendra; Steven Berson; Robert Braden

2006-04-01T23:59:59.000Z

445

GCspy: an adaptable heap visualisation framework  

Science Conference Proceedings (OSTI)

GCspy is an architectural framework for the collection, transmission, storage and replay of memory management behaviour. It makes new contributions to the understanding of the dynamic memory behaviour of programming languages (and especially object-oriented ... Keywords: Java, garbage collection, language implementation, memory management, visualisation of objects

Tony Printezis; Richard Jones

2002-11-01T23:59:59.000Z

446

A Clustering-Driven LDAP Framework  

Science Conference Proceedings (OSTI)

LDAP directories have proliferated as the appropriate storage framework for various and heterogeneous data sources, operating under a wide range of applications and services. Due to the increased amount and heterogeneity of the LDAP data, there is a ... Keywords: DIT organization, LDAP services, clustering, merging criteria, query and retrieval engine

Vassiliki Koutsonikola; Athena Vakali

2011-07-01T23:59:59.000Z

447

A framework for schema matcher composition  

Science Conference Proceedings (OSTI)

Enterprise schemas tend to be different, which is the key issue when the seamless communication between systems is of utmost importance. One solution could be the development of standards which then could be enforced, however, vendors seem to be reluctant ... Keywords: algorithm analysis, framework definition, optimization, performance improvement, schema matching

Balazs Villanyi; Peter Martinek; Bela Szikora

2010-10-01T23:59:59.000Z

448

Free Parameters and Frameworks in Minimal Supersymmetry  

E-Print Network (OSTI)

405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coefficients of the "soft

449

Free Parameters and Frameworks in Minimal Supersymmetry  

E-Print Network (OSTI)

405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coe#cients of the ``soft

450

Compiler implementation in a formal logical framework  

Science Conference Proceedings (OSTI)

The task of designing and implementing a compiler can be a difficult and error-prone process. In this paper, we present a new approach based on the use of higher-order abstract syntax and term rewriting in a logical framework. All program transformations, ... Keywords: formal compiler, higher-order abstract syntax, logical programming environment

Jason Hickey; Aleksey Nogin; Adam Granicz

2003-08-01T23:59:59.000Z

451

CZT: a framework for Z tools  

Science Conference Proceedings (OSTI)

The Community Z Tools (CZT) project is an open-source Java framework for building formal methods tools for Z and Z dialects. It also includes a set of tools for parsing, typechecking, transforming and printing standard Z specifications in LATEX, Unicode ...

Petra Malik; Mark Utting

2005-04-01T23:59:59.000Z

452

A general implementation framework for tabled CLP  

Science Conference Proceedings (OSTI)

This paper describes a framework to combine tabling evaluation and constraint logic programming (TCLP). While this combination has been studied previously from a theoretical point of view and some implementations exist, they either suffer from a lack ... Keywords: constraint logic programming, implementation, performance, tabling

Pablo Chico de Guzmán; Manuel Carro; Manuel V. Hermenegildo; Peter Stuckey

2012-05-01T23:59:59.000Z

453

A national public healthcare framework using grid  

Science Conference Proceedings (OSTI)

This paper presents a framework for public healthcare by making a grid over public infrastructure such as Internet. It clearly illustrates the need and viability of such grids. The paper gives in details the technology required behind building such global ... Keywords: DICOM, HL7, SAN, component, grid, healthcare, national, security, state, taluka

Rekha Singhal

2010-09-01T23:59:59.000Z

454

Semantic Sensor Net: an extensible framework  

Science Conference Proceedings (OSTI)

Existing approaches for sensor networks suffer from a number of serious drawbacks, including assumption of homogeneous sensor nodes, application-dependency, engineering-orientation, and lack of interoperability. To overcome these drawbacks, we ... Keywords: architecture, data processing, dynamic tagging, framework, semantic information, semantic sensor net, semantics, sensor networks

Lionel M. Ni; Yanmin Zhu; Jian Ma; Qiong Luo; Yunhao Liu; S. C. Cheung; Qiang Yang; Minglu Li; Min-you Wu

2009-04-01T23:59:59.000Z

455

State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline  

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

State Regulatory Framework Will Most Likely Result in Robust CO2 State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline System, New Study Says State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline System, New Study Says February 1, 2011 - 12:00pm Addthis Washington, DC - A private sector model with a state rather than Federal-based regulatory framework is the approach that will "most likely result in a robust CO2 [carbon dioxide] pipeline system" in the United States, according to a new report developed with funding from the U.S. Department of Energy's National Energy Technology Laboratory (DOE/NETL). However, a Federal role that "includes incentives to encourage the private construction of CO2 pipelines" would be an important factor in moving the concept forward, the study says.

456

Econometric structural models : a model selection approach.  

E-Print Network (OSTI)

??Using a model selection approach, this thesis proposes a constructive data-and-theory-combined procedure to identify model structures in the framework of a linear simultaneous equations system… (more)

Chen, Pu

2002-01-01T23:59:59.000Z

457

A decision process framework: selecting strategies for rehabilitation of rigid pavements subjected to high traffic volumes  

E-Print Network (OSTI)

Concrete pavements, underdesigned for today's levels of traffic, are deteriorating rapidly. Maintenance, rehabilitation, and reconstruction activities (MRR) have become more widespread and costly. State highway agencies are often being asked to do more MRR work with fewer funds. An improved and comprehensive decision process for selecting the preferred strategy for MRR that considers not only pavement but also traffic and construction issues is needed. Research was conducted to develop a framework for selecting strategies for MRR. The factors, steps, and information involved in the MRR decision process were identified. A decision analysis tool, IDEF0, was used to model the decision process framework. The IDEF0 model is hierarchical in nature (each function is divided into subfunctions) and includes the information flow between the different functions. Data was collected through project case studies and interviews to evaluate and refine the framework. Further research will be necessary to expand the model to a higher level of detail.

Valls, Marc Edouard Josep

2000-01-01T23:59:59.000Z

458

A Multi-Pollutant Framework for Evaluating CO2 Control Options for Fossil Fuel Power Plants  

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

Multi-Pollutant Framework for Evaluating CO Multi-Pollutant Framework for Evaluating CO 2 Control Options for Fossil Fuel Power Plants Edward S. Rubin (rubin@cmu.edu; 412-268-5897) Anand B. Rao (abr@andrew.cmu.edu; 412-268-5605) Michael B. Berkenpas (mikeb@cmu.edu; 412-268-1088) Carnegie Mellon University EPP Department, Baker Hall 128A Pittsburgh, PA 15213 Abstract As part of DOE/NETL's Carbon Sequestration Program, we are developing an integrated, multi-pollutant modeling framework to evaluate the costs and performance of alternative carbon capture and sequestration technologies for fossil-fueled power plants. The model calculates emissions, costs, and efficiency on a systematic basis at the level of an individual plant or facility. Both new and existing facilities can be modeled, including coal-based or natural gas-based combustion or gasification systems using air or oxygen.

459

Task parallel sensitivity analysis and parameter estimation of groundwater simulations through the SALSSA framework  

Science Conference Proceedings (OSTI)

The Support Architecture for Large-Scale Subsurface Analysis (SALSSA) provides an extensible framework, sophisticated graphical user interface, and underlying data management system that simplifies the process of running subsurface models, tracking provenance information, and analyzing the model results. Initially, SALSSA supported two styles of job control: user directed execution and monitoring of individual jobs, and load balancing of jobs across multiple machines taking advantage of many available workstations. Recent efforts in subsurface modelling have been directed at advancing simulators to take advantage of leadership class supercomputers. We describe two approaches, current progress, and plans toward enabling efficient application of the subsurface simulator codes via the SALSSA framework: automating sensitivity analysis problems through task parallelism, and task parallel parameter estimation using the PEST framework.

Schuchardt, Karen L.; Agarwal, Khushbu; Chase, Jared M.; Rockhold, Mark L.; Freedman, Vicky L.; Elsethagen, Todd O.; Scheibe, Timothy D.; Chin, George; Sivaramakrishnan, Chandrika

2010-07-15T23:59:59.000Z

460

Modeling the Impacts of Electricity Tarrifs on PHEV Charging, Costs, and Emissions  

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

R&M Project 2A: R&M Project 2A: Evaluating the Effects of Managing Controllable Demand and Distributed Energy Resources Locally on System Performance and Costs Tim Mount, Eilyan Bitar and Ray Zimmerman Cornell University Alberto Lamadrid Lehigh University CERTS Review, Cornell, August 6 th - 7 th , 2013 An NSF I/UCRC PART I: Storage (Mount) PART II: Ramping* (Lamadrid) PART III: Robust Optimization* (Bitar) *(Note: This is a new part of the project that began on 3/30/13) 2 OUTLINE OF THE PRESENTATION An NSF I/UCRC PART I: Storage Wooyoung Jeon Hao Lu Jung Youn Mo 3 An NSF I/UCRC Context of the Research: An Integrated Multi-Scale Framework 4 SuperOPF  Costs PEV charger capacities  Commuting Patterns  Nodal Capabilities

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461

A generalized simulation framework to manage logistics systems: a case study in waste management and environmental protection  

Science Conference Proceedings (OSTI)

This paper presents an innovative modeling framework able to support planning, management and optimization of waste collection operations in an urban context. A proprietary simulator composed by three functionality modules (Global Positioning System, ...

Roberto Revetria; Alessandro Testa; Lucia Cassettari

2011-12-01T23:59:59.000Z

462

Catalyzed Nano-Framework Stablized High Density Reversible Hydrogen Storage Systems  

Science Conference Proceedings (OSTI)

A wide range of high capacity on-board rechargeable material candidates have exhibited non-ideal behavior related to irreversible hydrogen discharge / recharge behavior, and kinetic instability or retardation. This project addresses these issues by incorporating solvated and other forms of complex metal hydrides, with an emphasis on borohydrides, into nano-scale frameworks of low density, high surface area skeleton materials to stabilize, catalyze, and control desorption product formation associated with such complex metal hydrides. A variety of framework chemistries and hydride / framework combinations were investigated to make a relatively broad assessment of the method'Â?s potential. In this project, the hydride / framework interactions were tuned to decrease desorption temperatures for highly stable compounds or increase desorption temperatures for unstable high capacity compounds, and to influence desorption product formation for improved reversibility. First principle modeling was used to explore heterogeneous catalysis of hydride reversibility by modeling H{sub 2} dissociation, hydrogen migration, and rehydrogenation. Atomic modeling also demonstrated enhanced NaTi(BH{sub 4}){sub 4} stabilization at nano-framework surfaces modified with multi-functional agents. Amine multi-functional agents were found to have more balanced interactions with nano-framework and hydride clusters than other functional groups investigated. Experimentation demonstrated that incorporation of Ca(BH{sub 4}){sub 2} and Mg(BH{sub 4}){sub 2} in aerogels enhanced hydride desorption kinetics. Carbon aerogels were identified as the most suitable nano-frameworks for hydride kinetic enhancement and high hydride loading. High loading of NaTi(BH{sub 4}){sub 4} ligand complex in SiO{sub 2} aerogel was achieved and hydride stability was improved with the aerogel. Although improvements of desorption kinetics was observed, the incorporation of Ca(BH{sub 4}){sub 2} and Mg(BH{sub 4}){sub 2} in nano-frameworks did not improve their H{sub 2} absorption due to the formation of stable alkaline earth B12H12 intermediates upon rehydrogenation. This project primarily investigated the effect of nano-framework surface chemistry on hydride properties, while the effect of pore size is the focus area of other efforts (e.g., HRL, Sandia National Laboratories (SNL) etc.) within the Metal Hydride Center of Excellence (MHCoE). The projects were complementary in gaining an overall understanding of the influence of nano-frameworks on hydride behavior.

Xia Tang , Susanne M. Opalka , Daniel A. Mosher, Bruce L. Laube, Ronald J. Brown, Thomas H. Vanderspurt, Sarah Arsenault, Robert Wu, Jamie Strickler, Ewa. Ronnebro, Tim. Boyle and Joseph Cordaro

2010-06-30T23:59:59.000Z

463

A Strategic Framework for SMR Deployment  

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

A Strategic Framework for SMR Deployment February 24, 2012 Introduction A strategy for the successful deployment of small modular reactors (SMRs) must consider what the goals of deployment would entail, the challenges to achieving these goals and the approach to overcome those challenges. This paper will attempt to offer a framework for addressing these important issues at the outset of the program. The deployment of SMRs will be realized by private power companies making the decision to purchase and operate SMRs from private vendors. The government role is to set national priorities for clean energy and national security and create incentives to achieve them. The policy tools the government may choose to use to advance this technology in support of these national objectives will evolve as SMRs advance

464

Tri-State Demand Response Framework  

Science Conference Proceedings (OSTI)

This report provides the results of a demand response framework development project of Tri-State Generation and Transmission, a wholesale provider to a number of rural electric associations in the Rocky Mountain west. Tri-State has developed an assortment of planned demand response and energy shaping products and services designed to both shave peak and shift consumption to off-peak hours. The applications, networks, and devices that will be needed to support these needs will involve many ...

2013-03-28T23:59:59.000Z

465

An Optimization Framework for Driver Feedback Systems  

SciTech Connect

Modern vehicles have sophisticated electronic control units that can control engine operation with discretion to balance fuel economy, emissions, and power. These control units are designed for specific driving conditions (e.g., different speed profiles for highway and city driving). However, individual driving styles are different and rarely match the specific driving conditions for which the units were designed. In the research reported here, we investigate driving-style factors that have a major impact on fuel economy and construct an optimization framework to optimize individual driving styles with respect to these driving factors. In this context, we construct a set of polynomial metamodels to reflect the responses produced in fuel economy by changing the driving factors. Then, we compare the optimized driving styles to the original driving styles and evaluate the effectiveness of the optimization framework. Finally, we use this proposed framework to develop a real-time feedback system, including visual instructions, to enable drivers to alter their driving styles in response to actual driving conditions to improve fuel efficiency.

Malikopoulos, Andreas [ORNL; Aguilar, Juan P. [Georgia Institute of Technology

2013-01-01T23:59:59.000Z

466

A framework and methodology for nuclear fuel cycle transparency.  

Science Conference Proceedings (OSTI)

A key objective to the global deployment of nuclear technology is maintaining transparency among nation-states and international communities. By providing an environment in which to exchange scientific and technological information regarding nuclear technology, the safe and legitimate use of nuclear material and technology can be assured. Many nations are considering closed or multiple-application nuclear fuel cycles and are subsequently developing advanced reactors in an effort to obtain some degree of energy self-sufficiency. Proliferation resistance features that prevent theft or diversion of nuclear material and reduce the likelihood of diversion from the civilian nuclear power fuel cycle are critical for a global nuclear future. IAEA Safeguards have been effective in minimizing opportunities for diversion; however, recent changes in the global political climate suggest implementation of additional technology and methods to ensure the prompt detection of proliferation. For a variety of reasons, nuclear facilities are becoming increasingly automated and will require minimum manual operation. This trend provides an opportunity to utilize the abundance of process information for monitoring proliferation risk, especially in future facilities. A framework that monitors process information continuously can lead to greater transparency of nuclear fuel cycle activities and can demonstrate the ability to resist proliferation associated with these activities. Additionally, a framework designed to monitor processes will ensure the legitimate use of nuclear material. This report describes recent efforts to develop a methodology capable of assessing proliferation risk in support of overall plant transparency. The framework may be tested at the candidate site located in Japan: the Fuel Handling Training Model designed for the Monju Fast Reactor at the International Cooperation and Development Training Center of the Japan Atomic Energy Agency.

McClellan, Yvonne; York, David L.; Inoue, Naoko (Japan Atomic Energy Agency, Ibaraki, Japan); Love, Tracia L.; Rochau, Gary Eugene

2006-02-01T23:59:59.000Z

467

Modelling discourse in contested domains: a semiotic and cognitive framework  

Science Conference Proceedings (OSTI)

This paper examines the representational requirements for interactive, collaborative systems intended to support sensemaking and argumentation over contested issues. We argue that a perspective supported by semiotic and cognitively oriented discourse ... Keywords: argumentation, coherence relations, discourse representation, ontologies, semantic annotation, semantic web, semiotics

Clara Mancini; Simon J. Buckingham Shum

2006-11-01T23:59:59.000Z

468

Modeling the Flash Rate of Thunderstorms. Part I: Framework  

Science Conference Proceedings (OSTI)

In this study a straightforward theoretical approach to determining the flash rate in thunderstorms is presented. A two-plate capacitor represents the basic dipole charge structure of a thunderstorm, which is charged by the generator current and ...

Johannes M. L. Dahl; Hartmut Höller; Ulrich Schumann

2011-10-01T23:59:59.000Z

469

NBTI modeling in the framework of temperature variation  

Science Conference Proceedings (OSTI)

Negative Bias Temperature Instability (NBTI) has become an important reliability concern for nano-scaled Complementary Metal Oxide Semiconductor (CMOS) devices. In this paper, we present an analysis of temperature impact on various sub-processes that ...

Seyab; Said Hamdioui

2010-03-01T23:59:59.000Z

470

Modelling corporate tax liabilities using company accounts: a new framework  

E-Print Network (OSTI)

examines the influence of organizational structure, represented by the number of subsidiaries and holdings, on corporation tax payments with a view to estimate the reverse causality. In many countries, controlling shareholders are accused of tunnelling... the transparency of the 10 entire economy, clouding accounting numbers and making it hard to infer the health of the firms. An equally important effect of tunnelling that has gone unnoticed in the literature is its negative impact on tax revenues. Firms also tend...

Ahmed, Saeed

2004-06-16T23:59:59.000Z

471

Analytic framework for TRL-based cost and schedule models  

E-Print Network (OSTI)

Many government agencies have adopted the Technology Readiness Level (TRL) scale to help improve technology development management under ever increasing cost, schedule, and complexity constraints. Many TRL-based cost and ...

El-Khoury, Bernard

2012-01-01T23:59:59.000Z

472

Developing a Modeling Framework for Assessing Population Impacts...  

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

Sustainable Energy Systems Group Energy Storage and Distributed Resources Combustion Technologies Group Electrochemical Technologies Group Grid Integration Group Laser...

473

A static compliance-checking framework for business process models  

Science Conference Proceedings (OSTI)

Regulatory compliance of business operations is a critical problem for enterprises. As enterprises increasingly use business process management systems to automate their business processes, technologies to automatically check the compliance of process ...

Y. Liu; S. Müller; K. Xu

2007-04-01T23:59:59.000Z

474

A framework for application performance modeling and prediction  

E-Print Network (OSTI)

• 2005 UCSD Mentor Recognition Award for excellence in preparing undergraduate students for graduate studies • Finalist, Gordon Bell Prize for “WRF Nature Run ” 2007

Allan Edward Snavely; A. Snavely; L. Carter; J. Boisseau; A. Majumdar; K. S. Gatlin; N. Mitchell; J. Feo; A. Snavely; D. Tullsen; A. Snavely; L. Carrington; N. Wolter; J. Labarta; R. Badia; A. Purkayastha; M. O. Mccracken; A. Snavely; A. D. Maloney

2002-01-01T23:59:59.000Z

475

Incorporating Hybrid Models into a Framework for Designing ...  

Science Conference Proceedings (OSTI)

The initial goal is to create an easy-to-use software system for integrating material, ... A process design technique for the control of microstructure development ...

476

A FRAMEWORK FOR ASSESSING THE RELIABILITY OF WIND ENERGY CONVERSION SYSTEMS  

E-Print Network (OSTI)

During the last decade, wind power generation has seen rapid development. According to the U.S. Department of Energy, achieving 20 % wind power penetration in the U.S. by 2030 will require: (i) enhancement of the transmission infrastructure, (ii) improvement of reliability and operability of wind systems and (iii) increased U.S. manufacturing capacity of wind generation equipment. This research will concentrate on improvement of reliability and operability of wind energy conversion systems (WECSs). The increased penetration of wind energy into the grid imposes new operating conditions on power systems. This change requires development of an adequate reliability framework. This thesis proposes a framework for assessing WECS reliability in the face of external disturbances, e.g., grid faults and internal component faults. The framework is illustrated using a detailed model of type C WECS- doubly fed induction generator with corresponding deterministic and random variables in a simplified grid model. Fault parameters and performance requirements essential to

Sebastian S?awomir Smater

2009-01-01T23:59:59.000Z

477

Modeling for Process Control: High-Dimensional Systems  

SciTech Connect

Most of other technologically important systems (among them, powders and other granular systems) are intrinsically nonlinear. This project is focused on building the dynamical models for granular systems as a prototype for nonlinear high-dimensional systems exhibiting complex non-equilibrium phenomena. Granular materials present a unique opportunity to study these issues in a technologically important and yet fundamentally interesting setting. Granular systems exhibit a rich variety of regimes from gas-like to solid-like depending on the external excitation. Based the combination of the rigorous asymptotic analysis, available experimental data and nonlinear signal processing tools, we developed a multi-scale approach to the modeling of granular systems from detailed description of grain-grain interaction on a micro-scale to continuous modeling of large-scale granular flows with important geophysical applications.

Lev S. Tsimring

2008-09-15T23:59:59.000Z

478

A decision making framework for cruise ship design  

E-Print Network (OSTI)

This thesis develops a new decision making framework for initial cruise ship design. Through review of effectiveness analysis and multi-criteria decision making, a uniform philosophy is created to articulate a framework ...

Katsoufis, George P. (George Paraskevas)

2006-01-01T23:59:59.000Z

479

A linux kernel cryptographic framework: decoupling cryptographic keys from applications  

Science Conference Proceedings (OSTI)

This paper describes a cryptographic service framework for the Linux kernel. The framework enables user-space applications to perform operations with cryptographic keys, while at the same time ensuring that applications cannot directly access or extract ...

Nikos Mavrogiannopoulos; Miloslav Trma?; Bart Preneel

2012-03-01T23:59:59.000Z

480

Improving Building Performance at Urban Scale with a Framework...  

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

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

Note: This page contains sample records for the topic "multi-scale modeling framework" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor