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1

The Interaction of Katabatic Flow and Mountain Waves. Part II: Case Study Analysis and Conceptual Model  

Science Conference Proceedings (OSTI)

Via numerical analysis of detailed simulations of an early September 1993 case night, the authors develop a conceptual model of the interaction of katabatic flow in the nocturnal boundary layer with mountain waves (MKI). A companion paper (Part I)...

Gregory S. Poulos; James E. Bossert; Thomas B. McKee; Roger A. Pielke Sr.

2007-06-01T23:59:59.000Z

2

Conceptual Model | Open Energy Information  

Open Energy Info (EERE)

Conceptual Model Conceptual Model Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Conceptual Model Details Activities (17) Areas (4) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Data and Modeling Techniques Exploration Sub Group: Modeling Techniques Parent Exploration Technique: Modeling Techniques Information Provided by Technique Lithology: Rock types, rock chemistry, stratigraphic layer organization Stratigraphic/Structural: Location and shape of permeable and non-permeable structures, faults, fracture patterns Hydrological: Hydrothermal fluid flow characteristics, up-flow patterns Thermal: Temperature and pressure extrapolation throughout reservoir, heat source characteristics Dictionary.png Conceptual Model:

3

An overview of severe accident modeling and analysis work for the ANS reactor conceptual safety analysis report  

Science Conference Proceedings (OSTI)

ORNL`s Advanced Neutron Source (ANS) will be a new user facility for all kinds of neutron research, centered around a research reactor of unprecedented neutron beam flux. A defense-in-depth philosophy has been adopted. In response to this commitment, ANS Project management has initiated severe accident analysis and related technology development efforts early-on in the design phase itself. Early consideration of severe accident issues will aid in designing a sufficiently robust containment for retention and controlled release of radionuclides in the event of such an accident. It will also provide a means for satisfying on- and off-site regulatory requirements and provide containment response and source term analyses for level-2 and -3 Probabilistic Risk Analyses (PRAs) that will be produced. Moreover, it will provide the best possible understanding of the ANS under severe accident conditions, and consequently provide insights for the development of strategies and design philosophies for accident management, mitigation, and emergency preparedness. This paper presents a perspective overview of the severe accident modeling and analysis work for the ANS Conceptual Safety Analysis Report (CSAR)

Taleyarkhan, R.P.

1992-12-31T23:59:59.000Z

4

Geothermal resource conceptual models using surface exploration data | Open  

Open Energy Info (EERE)

Geothermal resource conceptual models using surface exploration data Geothermal resource conceptual models using surface exploration data Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geothermal resource conceptual models using surface exploration data Abstract The most important element of an analysis to target a geothermal well or assess resource capacity is a resource conceptual model consistent with the available information. A common alternative approach to both targeting and assessment is to focus on a data anomaly or, in some cases, several stacked anomalies. However, even stacked anomalies are commonly misleading without support from a conceptual model. The most important element of a geothermal conceptual model is a predicted natural state isotherm pattern, especially in section view. Although inferring such an isotherm pattern at an

5

Definition: Conceptual Model | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Conceptual Model Jump to: navigation, search Dictionary.png Conceptual Model In the broadest terms, a conceptual model is anything used to represent anything else. In geothermal exploration a conceptual model is a descriptive and qualitative model (not used for calculations) integrating and bringing together the physical features of a system to create a representation of the geothermal reservoir.[1] View on Wikipedia Wikipedia Definition In the most general sense, a model is anything used in any way to represent anything else. Some models are physical objects, for instance, a toy model which may be assembled, and may even be made to work like the object it represents. Whereas, a conceptual model is a model that exists

6

Conceptual Models of Geothermal Systems - Introduction | Open Energy  

Open Energy Info (EERE)

Conceptual Models of Geothermal Systems - Introduction Conceptual Models of Geothermal Systems - Introduction Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Conceptual Models of Geothermal Systems - Introduction Abstract The key to the successful exploration, development (incl. drilling) and utilization of any type of geothermal system is a clear definition and understanding of the nature and characteristics of the system in question. This is best achieved through the development of a conceptual model of the system, which is a descriptive or qualitative model incorporating, and unifying, the essential physical features of the system. Conceptual models are mainly based on analysis of geological and geophysical information, temperature and pressure data, information on reservoir properties as well

7

Visual Conceptualizations and Models of Science  

E-Print Network (OSTI)

This Journal of Informetrics special issue aims to improve our understanding of the structure and dynamics of science by reviewing and advancing existing conceptualizations and models of scholarly activity. Several of these conceptualizations and models have visual manifestations supporting the combination and comparison of theories and approaches developed in different disciplines of science. Subsequently, we discuss challenges towards a theoretically grounded and practically useful science of science and provide a brief chronological review of relevant work. Then, we exemplarily present three conceptualizations of science that attempt to provide frameworks for the comparison and combination of existing approaches, theories, laws, and measurements. Finally, we discuss the contributions of and interlinkages among the eight papers included in this issue. Each paper makes a unique contribution towards conceptualizations and models of science and roots this contribution in a review and comparison with existing w...

Boerner, Katy

2009-01-01T23:59:59.000Z

8

A conceptual model for service availability  

E-Print Network (OSTI)

Traditionally, availability has been seen as an atomic property asserting the average time a system is “up ” or “down”. In order to model and analyse the availability of computerised systems in a world where the dependency on and complexity of such systems are increasing, this notion of availability is no longer sufficient. This report presents a conceptual model for service availability designed to handle these challenges. The core of this model is a characterisation of service availability by means of accessibility properties and exclusivity properties, which is further specialised into measurable aspects of service availability. We outline how this conceptual model may be refined to a framework for specifying and analysing availability requirements.

Judith E. Y. Rossebø; Mass Soldal Lund; Knut-eilif Husa; Atle Refsdal

2006-01-01T23:59:59.000Z

9

Thermodynamic Modeling and Analysis of the Ratio of Heat to Power Based on a Conceptual CHP System  

E-Print Network (OSTI)

The CHP system not only produces electrical energy, but also produces thermal energy. An extensive analysis of the CHP market reveals that one of the most important engineering characteristics is flexibility. A variable heat-to-power ratio has compelling advantages over a fixed one and enables a power plant to achieve reliability and flexibility, which are very important characteristics for a CHP system. In this paper, a conceptual SOFC/GT CHP system is presented. The parameters' effect on the variable heat-to-power ratio is investigated. As SOFC reactors are still under development, a flexible simulation tool based on mass and energy balances coupled with appropriate expressions for the reaction kinetics, thermodynamic constants and material properties, is presented for adaptation to different cell geometries and operating conditions. Simulation results show that the SOFC/GT CHP system's advantage over the engine is that a low stack running temperature can achieve a low heat-to- power ratio.

Liu, Z.; Li, X.; Liu, Z.

2006-01-01T23:59:59.000Z

10

Conceptual Modeling for Customized XML Schemas  

E-Print Network (OSTI)

XML was initially developed for document management, but it is becoming increasingly used for storing and exchanging all kinds of data on the Internet. In this paper, we introduce a design methodology for XML schemas that is based upon well-understood conceptual modeling methodologies. Because XML is hierarchical (tree-structured), many different XML schemas (or document structures) can be generated from the same conceptual database schema. We describe algorithms for generating customized hierarchical views from EER model, creating XML schemas from hierarchical views, generating SQL queries corresponding to the XML schemas, and creating XML instance documents from the query results. Ó 2004 Elsevier B.V. All rights reserved.

Ramez Elmasri; Qing Li; Jack Fu; Yu-chi Wu; Babak Hojabri; Swathi Ande

2002-01-01T23:59:59.000Z

11

Summary of Conceptual Models and Data Needs to Support the INL Remote-Handled Low-Level Waste Disposal Facility Performance Assessment and Composite Analysis  

SciTech Connect

An overview of the technical approach and data required to support development of the performance assessment, and composite analysis are presented for the remote handled low-level waste disposal facility on-site alternative being considered at Idaho National Laboratory. Previous analyses and available data that meet requirements are identified and discussed. Outstanding data and analysis needs are also identified and summarized. The on-site disposal facility is being evaluated in anticipation of the closure of the Radioactive Waste Management Complex at the INL. An assessment of facility performance and of the composite performance are required to meet the Department of Energy’s Low-Level Waste requirements (DOE Order 435.1, 2001) which stipulate that operation and closure of the disposal facility will be managed in a manner that is protective of worker and public health and safety, and the environment. The corresponding established procedures to ensure these protections are contained in DOE Manual 435.1-1, Radioactive Waste Management Manual (DOE M 435.1-1 2001). Requirements include assessment of (1) all-exposure pathways, (2) air pathway, (3) radon, and (4) groundwater pathway doses. Doses are computed from radionuclide concentrations in the environment. The performance assessment and composite analysis are being prepared to assess compliance with performance objectives and to establish limits on concentrations and inventories of radionuclides at the facility and to support specification of design, construction, operation and closure requirements. Technical objectives of the PA and CA are primarily accomplished through the development of an establish inventory, and through the use of predictive environmental transport models implementing an overarching conceptual framework. This document reviews the conceptual model, inherent assumptions, and data required to implement the conceptual model in a numerical framework. Available site-specific data and data sources are then addressed. Differences in required analyses and data are captured as outstanding data needs.

A. Jeff Sondrup; Annette L. Schafter; Arthur S. Rood

2010-09-01T23:59:59.000Z

12

Geothermal Resource Conceptual Models Using Surface Exploration Data | Open  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Geothermal Resource Conceptual Models Using Surface Exploration Data Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geothermal Resource Conceptual Models Using Surface Exploration Data Abstract The most important element of an analysis to target a geothermal well or assess resource capacity is a resource conceptual model consistent with the available information. A common alternative approach to both targeting and assessment is to focus on a data anomaly or, in some cases, several stacked anomalies. However, even stacked anomalies are commonly misleading without

13

On Ontology, ontologies, Conceptualizations, Modeling Languages, and (Meta)Models  

Science Conference Proceedings (OSTI)

In philosophy, the term ontology has been used since the 17th century to refer both to a philosophical discipline (Ontology with a capital “O”), and as a domain-independent system of categories that can be used in the conceptualization of ... Keywords: Conceptual Modeling, Formal Ontology, Language Adequacy, Metamodeling

Giancarlo Guizzardi

2007-06-01T23:59:59.000Z

14

Object-Oriented Modeling --1 2004 John Mylopoulos Conceptual Modeling CSC2507  

E-Print Network (OSTI)

Object-Oriented Modeling -- 1 2004 John Mylopoulos Conceptual Modeling CSC2507 Object-Oriented Analysis TechniquesObject-Oriented Analysis Techniques CoadCoad''ss OOA TechniqueOOA Technique Short HistoryShort History Terminological ComparisonTerminological Comparison RemarksRemarks V. Object-Oriented

Mylopoulos, John

15

Conceptual Model At Raft River Geothermal Area (1980) | Open Energy  

Open Energy Info (EERE)

0) 0) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1980 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine the relevant data necessary to assess a geothermal reservoir in similar rock types and use cross plots to potentially define the producing zones. Notes A conceptual model was developed that uses all geophysical data that has been collected on the area to determine the rock types and reasonable values of the parameters of interest. Emphasis has been on developing a simple interpretation scheme from a minimum of data sets. However, the cross plotting of various parameters has allowed a determination of rock types and an analysis of the degree of alteration and the density of

16

Conceptual Model At Coso Geothermal Area (1990) | Open Energy Information  

Open Energy Info (EERE)

Conceptual Model At Coso Geothermal Area (1990) Conceptual Model At Coso Geothermal Area (1990) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Conceptual Model Activity Date 1990 Usefulness useful DOE-funding Unknown Exploration Basis To develop an understanding of the fracture hydrology of the Coso Mountains crystalline terrain and its hydrologic connection to regional groundwater and thermal source Notes An interpreted, conceptually balanced regional cross section that extends from the Sierra Nevada through the geothermal reservoir to the Panamint Mountains is presented. The cross section is constrained by new reflection and refraction seismic data, gravity and magnetic modeling, drilling data from the geothermal reservoir, and published regional geologic mapping. The

17

An Updated Conceptual Model Of The Travale Geothermal Field Based...  

Open Energy Info (EERE)

Travale Geothermal Field Based On Recent Geophysical And Drilling Data Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Updated Conceptual Model Of...

18

Seismic Reflection Data and Conceptual Models for Geothermal...  

Open Energy Info (EERE)

Reflection Data and Conceptual Models for Geothermal Development in Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Seismic Reflection...

19

Conceptual Model At Raft River Geothermal Area (1981) | Open Energy  

Open Energy Info (EERE)

Conceptual Model At Raft River Geothermal Area (1981) Conceptual Model At Raft River Geothermal Area (1981) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Conceptual Model At Raft River Geothermal Area (1981) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1981 Usefulness not indicated DOE-funding Unknown Exploration Basis Use geoscience data to develop a conceptual model of the reservoir. Notes The geoscience data gathered in the drilling and testing of seven geothermal wells suggest that the thermal reservoir is: (a) produced from fractures found at the contact metamorphic zone, apparently the base of detached normal faulting from the Bridge and Horse Well Fault zones of the Jim Sage Mountains; (b) anisotropic, with the major axis of hydraulic

20

Conceptual Model At Raft River Geothermal Area (1988) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Conceptual Model At Raft River Geothermal Area (1988) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Conceptual Model At Raft River Geothermal Area (1988) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1988 Usefulness not indicated DOE-funding Unknown Exploration Basis Use geophysical logs to determine the reservoir transmissivity Notes Seven fracture orientation sets are recognized in the sedimentary and metamorphic rock units. Although the conventional geophysical logs showed

Note: This page contains sample records for the topic "analysis conceptual model" 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

Geology And A Working Conceptual Model Of The Obsidian Butte (Unit 6)  

Open Energy Info (EERE)

Geology And A Working Conceptual Model Of The Obsidian Butte (Unit 6) Geology And A Working Conceptual Model Of The Obsidian Butte (Unit 6) Sector Of The Salton Sea Geothermal Field, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Geology And A Working Conceptual Model Of The Obsidian Butte (Unit 6) Sector Of The Salton Sea Geothermal Field, California Details Activities (2) Areas (1) Regions (0) Abstract: A working conceptual model has been developed for the southwestern portion of the Salton Sea geothermal system, the region encompasing CalEnergy Operating Company's imnent 'Unit 6' field expansion (185 megawatts). The model is based on examination and analysis of several thousand borehole rock samples combined with a wealth of subsurface information made available for the first time from the databases of present

22

Conceptual Model At Raft River Geothermal Area (1990) | Open Energy  

Open Energy Info (EERE)

Conceptual Model At Raft River Geothermal Area (1990) Conceptual Model At Raft River Geothermal Area (1990) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1990 Usefulness not indicated DOE-funding Unknown Exploration Basis Develop a conceptual model to explain the exposed rocks. Notes Although commonly obscured by simple shear, pure shear fabrics occur locally within many metamorphic core complexes. The cover rocks of the Raft River metamorphic core complex exposed within the Black Pine Mountains display an early coaxial strain history which developed prior to the formation of low-angle fault-bounded allochthons. At higher structural levels this is documented by pressure shadows with straight sutures, and oppositely-rotated antitaxial calcite veins.

23

When conceptual model meets grammar: A dual approach to XML data modeling  

Science Conference Proceedings (OSTI)

In this paper we introduce a novel approach to conceptual modeling for XML schemas. Compared to other approaches, it allows for modeling of a whole family of XML schemas related to a particular application domain. It is integrated in a well-established ... Keywords: Conceptual modeling, Conceptual to XML schema transformation, Regular tree grammars, XML schema

Martin Necasky; Irena Mlynkova; Jakub Klimek; Jakub Maly

2012-02-01T23:59:59.000Z

24

An Updated Conceptual Model Of The Los Humeros Geothermal Reservoir  

Open Energy Info (EERE)

Humeros Geothermal Reservoir Humeros Geothermal Reservoir (Mexico) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Updated Conceptual Model Of The Los Humeros Geothermal Reservoir (Mexico) Details Activities (0) Areas (0) Regions (0) Abstract: An analysis of production and reservoir engineering data of 42 wells from the Los Humeros geothermal field (Mexico) allowed obtaining the pressure and temperature profiles for the unperturbed reservoir fluids and developing 1-D and 2-D models for the reservoir. Results showed the existence of at least two reservoirs in the system: a relatively shallow liquid-dominant reservoir located between 1025 and 1600 m above sea level (a.s.l.) the pressure profile of which corresponds to a 300-330°C boiling water column and a deeper low-liquid-saturation reservoir located between

25

Conceptual Model At Raft River Geothermal Area (1987) | Open Energy  

Open Energy Info (EERE)

Exploration Activity Details Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1987 Usefulness not indicated DOE-funding Unknown Exploration Basis To model the kinematics of compressional and extensional ductile shearing deformation Notes Analysis of shear criteria enables the kinematics of two main ductile-shearing events (D1 and D2) to be established in the Raft River, Grouse Creek and Albion 'metamorphic core complex'. The first event (D1) is a NNE-thrusting and corresponds to Mesozoic shortening. A well developed non-coaxial ductile deformation (D2), of Cenozoic age, is marked by the occurrence of opposing eastward (in Raft River) and westward shear criteria (in Albion-Grouse Creek). These characterize an arch structure

26

Seismic Reflection Data and Conceptual Models for Geothermal Development in  

Open Energy Info (EERE)

Seismic Reflection Data and Conceptual Models for Geothermal Development in Seismic Reflection Data and Conceptual Models for Geothermal Development in Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Seismic Reflection Data and Conceptual Models for Geothermal Development in Nevada Abstract Seismic reflection data were collected in two geothermalareas in Nevada to support geologic structural models andgeothermal well targeting. The data were integrated withsurface mapping, well results, and other geophysical data inconceptual geologic models in both areas. Faults wereinterpreted from reflection data based on reflector offsetsand apparent fault surface reflectors dipping away from therange front. Interpreted faults at Blue Mt., where severalwells have been drilled, correlated with well entries.Subsequent well targeting based on the conceptualstructural model

27

Conceptual Modeling of Data Intensive and Information Intensive Web Applications  

Science Conference Proceedings (OSTI)

Online services can be difficult to conceive and to managedue to their inherent complexity, involving many subjectswith distinct goals (user, managers, public and privateagencies, ...), often regulated by complex norms andprocedures; moreover, they are ... Keywords: Web Site modeling and Design, e-Government, Data Model,Conceptual modeling

Mario Bochicchio; Antonella Longo

2004-01-01T23:59:59.000Z

28

Conceptual Model At Coso Geothermal Area (1980) | Open Energy Information  

Open Energy Info (EERE)

Conceptual Model At Coso Geothermal Area (1980) Conceptual Model At Coso Geothermal Area (1980) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Conceptual Model Activity Date 1980 Usefulness not indicated DOE-funding Unknown Exploration Basis 1) Estimate thermal regime and thermal potential of the system. 2) Use field mapping to develop a model of the reservoir system. Notes 1) The seismograms of 44 events recorded by the telemetered array and nine events by the Centipede array were analyzed using the reduced spectral ratio technique to determine the differential attenuation factor delta t* for the events recorded with the highest signal-to-noise ratio. 2) Arcuate faults in the Coso Range are interpreted to have been produced by the regional stress field rather than to have been of volcanogenic origin.

29

Conceptual adsorption models and open issues pertaining to performance assessment  

SciTech Connect

Recently several articles have been published that question the appropriateness of the distribution coefficient, Rd, concept to quantify radionuclide migration. Several distinct issues are raised by various critics. In this paper I provide some perspective on issues surrounding the modeling of nuclide retardation. The first section defines adsorption terminology and discusses various adsorption processes. The next section describes five commonly used adsorption conceptual models, specifically emphasizing what attributes that affect adsorption are explicitly accommodated in each model. I also review efforts to incorporate each adsorption model into performance assessment transport computer codes. The five adsorption conceptual models are (1) the constant Rd model, (2) the parametric Rd model, (3) isotherm adsorption models, (4) mass-action adsorption models, and (5) surface-complexation with electrostatics models. The final section discusses the adequacy of the distribution ratio concept, the adequacy of transport calculations that rely on constant retardation factors and the status of incorporating sophisticated adsorption models into transport codes.

Serne, R.J.

1991-10-01T23:59:59.000Z

30

Surficial Extent And Conceptual Model Of Hydrothermal System At Mount  

Open Energy Info (EERE)

Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Rainier, Washington Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Rainier, Washington Details Activities (4) Areas (2) Regions (0) Abstract: A once massive hydrothermal system was disgorged from the summit of Mount Rainier in a highly destructive manner about 5000 years ago. Today, hydrothermal processes are depositing clayey alteration products that have the potential to reset the stage for similar events in the future. Areas of active hydrothermal alteration occur in three representative settings: 1. (1) An extensive area (greater than 12,000 m2) of heated ground and slightly acidic boiling-point fumaroles at 76-82°C at

31

Conceptual Modeling in Disaster Planning Using Agent Constructs  

Science Conference Proceedings (OSTI)

A disaster plan contains rules to be used by responders to deal with a disaster and save lives. Usually, the plan is not enacted by those who created it. This results in difficulty for responders in utilizating the plan. Conceptual models have been used ... Keywords: Disaster Management, Intelligent Agent, Modeling Grammar

Kafui Monu; Carson Woo

2009-11-01T23:59:59.000Z

32

EER-CONCEPTOOL: Conceptual Analysis of EER Schemas and Ontologies  

E-Print Network (OSTI)

EER-CONCEPTOOL: Conceptual Analysis of EER Schemas and Ontologies Ernesto Compatangelo Department We have developed an intelligent knowledge management environment called EER-ConcepTool, which and heuristic reasoning services. We highlight how EER-ConcepTool overcomes some typical drawbacks of current

Compatangelo, Ernesto

33

Automated energy model creation for conceptual design  

Science Conference Proceedings (OSTI)

Architects today rarely use whole building energy analysis to inform their early design process. During this stage of design, the team is responsible for macro-level decisions (such as basic form and orientation) that can have the most significant effects ... Keywords: building performance simulation, design process, whole building energy analysis

Lillian Smith; Kyle Bernhardt; Matthew Jezyk

2011-04-01T23:59:59.000Z

34

Hierarchical causal conceptual physical models - Springer  

Science Conference Proceedings (OSTI)

nomena like the ENSO, variation of monsoon in the Indian subcontinent, etc. For a clear presentation of systems modeling methods and purpose see Flood and ...

35

Conceptual Model At Coso Geothermal Area (2006) | Open Energy Information  

Open Energy Info (EERE)

6) 6) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Conceptual Model Activity Date 2006 Usefulness useful DOE-funding Unknown Exploration Basis Determine boiling zones and their relation to production zones by developing a fluid model Notes A fluid model for the Coso geothermal reservoir is developed from Fluid Inclusion Stratigraphy (FIS) analyses. Fluid inclusion gas chemistry in well cuttings collected at 20 ft intervals is analyzed and plotted on well log diagrams. Models are created using cross-sections and fence diagrams. References Dilley, L.M.; Norman, D.I.; Moore, J.; McCullouch, J. (1 January 2006) FLUID STRATIGRAPHY OF THE COSO GEOTHERMAL RESERVOIR Retrieved from "http://en.openei.org/w/index.php?title=Conceptual_Model_At_Coso_Geothermal_Area_(2006)&oldid=473688

36

A water utility industry conceptual asset management data warehouse model  

E-Print Network (OSTI)

Timely decision making is critical in today’s competitive business world and in recent times, data warehousing has been employed by numerous companies to satisfy the needs of accurate and timely information. Data warehousing has traditionally been employed for financial and customer relationship analysis with current applications now moving to other domains, such as the medical and power industries. The asset management industry is one that has seen great strides in recent years due to improved technology, but data warehousing of asset management information has been lacking. A literature review was undertaken to determine data warehousing applications in the area of asset management, and with the lessons learned, a conceptual model of data warehousing for asset management is proposed. The water utility industry is chosen to provide a grounded example of an enterprise data warehouse model that integrates data from various local information systems. The particular issues faced in the asset management domain are highlighted, and several water utility applications are presented. KEY WORDS: data warehousing, asset management, water utility industry, design 1.

Avin Mathew; Sheng Zhang; Lin Ma; Doug Hargreaves

2006-01-01T23:59:59.000Z

37

Conceptual Model At Raft River Geothermal Area (1976) | Open Energy  

Open Energy Info (EERE)

6) 6) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1976 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine productive zones in the reservoir Notes Borehole geophysics techniques were used in evaluating the Raft River geothermal reservoir to establish a viable model for the system. The assumed model for the hot water 1450C reservoir was a zone of higher conductivity, increased porosity, decreased density, and lower sonic velocity. References Applegate, J.K.; Donaldson, P.R.; Kinkley, D.L.; Wallace, T.L. (1 January 1976) Borehole geophysics evaluation of the Raft River geothermal reservoir Retrieved from "http://en.openei.org/w/index.php?title=Conceptual_Model_At_Raft_River_Geothermal_Area_(1976)&oldid=473821

38

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

39

Conceptual Model At Raft River Geothermal Area (1977) | Open Energy  

Open Energy Info (EERE)

) ) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine time to cool the geothermal field with reinjection Notes If reinjection and production wells intersect connected fractures, it is expected that reinjected fluid would cool the production well much sooner than would be predicted from calculations of flow in a porous medium. A method for calculating how much sooner that cooling will occur was developed. References Kasameyer, P. W.; Schroeder, R. C. (1 January 1977) Application of thermal depletion model to geothermal reservoirs with fracture and pore permeability Retrieved from "http://en.openei.org/w/index.php?title=Conceptual_Model_At_Raft_River_Geothermal_Area_(1977)&oldid=473822

40

Elevated Mixed Layers in the Regional Severe Storm Environment: Conceptual Model and Case Studies  

Science Conference Proceedings (OSTI)

A conceptual model of the evolution of the severe local storm environment is discussed in conjunction with three case studies drawn from data obtained during the 1979 SESAME field program. The conceptual model describes how a particular ...

T. N. Carlson; S. G. Benjamin; G. S. Forbes; Y-F. Li

1983-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Conceptual Model At Coso Geothermal Area (2005) | Open Energy Information  

Open Energy Info (EERE)

Coso Geothermal Area (2005) Coso Geothermal Area (2005) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Conceptual Model Activity Date 2005 Usefulness not indicated DOE-funding Unknown Exploration Basis Develop a conceptual model of the Coso area Notes Investigation of the Coso Range using seismicity, gravity, and geochemistry of rocks and fluids, supports the interpretation that the structure hosting the geothermal resource is a nascent metamorphic core complex. The structural setting is a releasing bend in a dextral strike-slip system that extends from the Indian Wells Valley northward into the Owens Valley. This tectonic setting results in NW-directed transtension, which is accommodated by normal and strike-slip faulting of the brittle upper 4-6 km of the

42

Conceptual Model At Salton Sea Geothermal Area (1977) | Open Energy  

Open Energy Info (EERE)

Geothermal Area (1977) Geothermal Area (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Conceptual Model At Salton Sea Geothermal Area (1977) Exploration Activity Details Location Salton Sea Geothermal Area Exploration Technique Conceptual Model Activity Date 1977 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine time to cool the geothermal field with reinjection Notes If reinjection and production wells intersect connected fractures, it is expected that reinjected fluid would cool the production well much sooner than would be predicted from calculations of flow in a porous medium. A method for calculating how much sooner that cooling will occur was developed. References Kasameyer, P. W.; Schroeder, R. C. (1 January 1977) Application

43

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

44

Conceptual model of the Klamath Falls, Oregon geothermal area  

DOE Green Energy (OSTI)

Over the last 50 years significant amounts of data have been obtained from the Klamath Falls geothermal resource. To date, the complexity of the system has stymied researchers, leading to the development of only very generalized hydrogeologic and geothermal models of the area. Recently, the large quantity of available temperature data have been re-evaluated, revealing new information on subsurface heat flow and locations of faults in the system. These inferences are supported by borehole, geochemical, geophysical, and hydrologic data. Based on re-evaluation of all available data, a detailed conceptual model for the Klamath Falls geothermal resource is proposed.

Prucha, R.H.; Benson, S.M.; Witherspoon, P.A.

1987-01-01T23:59:59.000Z

45

Conceptual Model At Coso Geothermal Area (2005-2007) | Open Energy  

Open Energy Info (EERE)

7) 7) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Conceptual Model At Coso Geothermal Area (2005-2007) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Conceptual Model Activity Date 2005 - 2007 Usefulness useful DOE-funding Unknown Exploration Basis Determine most productive areas of geothermal field using stress and faulting analysis to develop a geomechanical model Notes New geologic mapping and measurements of stress orientations and magnitudes from wells 34-9RD2 and 58A-10 were integrated with existing data sets to refine a geomechanical model for the Coso geothermal field. Vertically averaged stress orientations across the field are fairly uniform and are consistent with focal mechanism inversions of earthquake clusters for

46

Conceptual Analysis of Noun Groups in English. Paper submitted to  

E-Print Network (OSTI)

An expectation-based system, NGP, for parsing English noun groups into the Conceptual Dependency representation is described. The system

Anatole V. Gershman

1977-01-01T23:59:59.000Z

47

Conceptual Model At Raft River Geothermal Area (1979) | Open Energy  

Open Energy Info (EERE)

79) 79) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 1979 Usefulness not indicated DOE-funding Unknown Exploration Basis Recommendations are made concerning field expansion and additional work needed to refine the overall reservoir model. Notes Models described in this report show the source of various minerals in the geothermal water. There appears to be a regional heat source that gives rise to uniform conductive heat flow in the region, but convective flow is concentrated near the upwelling in the Crook well vicinity. References Overton, H. L.; Chaney, R. E.; Mcatee, R. E.; Graham, D. L. (1 November 1979) Geochemical modeling of the Raft River geothermal field Overton, H. L.; Chaney, R. E.; Mcatee, D. L.; Graham, D. L. (1

48

Updated Conceptual Model for the 300 Area Uranium Groundwater Plume  

SciTech Connect

The 300 Area uranium groundwater plume in the 300-FF-5 Operable Unit is residual from past discharge of nuclear fuel fabrication wastes to a number of liquid (and solid) disposal sites. The source zones in the disposal sites were remediated by excavation and backfilled to grade, but sorbed uranium remains in deeper, unexcavated vadose zone sediments. In spite of source term removal, the groundwater plume has shown remarkable persistence, with concentrations exceeding the drinking water standard over an area of approximately 1 km2. The plume resides within a coupled vadose zone, groundwater, river zone system of immense complexity and scale. Interactions between geologic structure, the hydrologic system driven by the Columbia River, groundwater-river exchange points, and the geochemistry of uranium contribute to persistence of the plume. The U.S. Department of Energy (DOE) recently completed a Remedial Investigation/Feasibility Study (RI/FS) to document characterization of the 300 Area uranium plume and plan for beginning to implement proposed remedial actions. As part of the RI/FS document, a conceptual model was developed that integrates knowledge of the hydrogeologic and geochemical properties of the 300 Area and controlling processes to yield an understanding of how the system behaves and the variables that control it. Recent results from the Hanford Integrated Field Research Challenge site and the Subsurface Biogeochemistry Scientific Focus Area Project funded by the DOE Office of Science were used to update the conceptual model and provide an assessment of key factors controlling plume persistence.

Zachara, John M.; Freshley, Mark D.; Last, George V.; Peterson, Robert E.; Bjornstad, Bruce N.

2012-11-01T23:59:59.000Z

49

An independent verification and validation of the Future Theater Level Model conceptual model  

Science Conference Proceedings (OSTI)

This report describes the methodology and results of independent verification and validation performed on a combat model in its design stage. The combat model is the Future Theater Level Model (FTLM), under development by The Joint Staff/J-8. J-8 has undertaken its development to provide an analysis tool that addresses the uncertainties of combat more directly than previous models and yields more rapid study results. The methodology adopted for this verification and validation consisted of document analyses. Included were detailed examination of the FTLM design documents (at all stages of development), the FTLM Mission Needs Statement, and selected documentation for other theater level combat models. These documents were compared to assess the FTLM as to its design stage, its purpose as an analytical combat model, and its capabilities as specified in the Mission Needs Statement. The conceptual design passed those tests. The recommendations included specific modifications as well as a recommendation for continued development. The methodology is significant because independent verification and validation have not been previously reported as being performed on a combat model in its design stage. The results are significant because The Joint Staff/J-8 will be using the recommendations from this study in determining whether to proceed with develop of the model.

Hartley, D.S. III; Kruse, K.L.; Martellaro, A.J.; Packard, S.L.; Thomas, B. Jr.; Turley, V.K.

1994-08-01T23:59:59.000Z

50

Conceptual Model At Raft River Geothermal Area (2011) | Open Energy  

Open Energy Info (EERE)

2011) 2011) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Conceptual Model Activity Date 2011 Usefulness not indicated DOE-funding Unknown Exploration Basis Explore for development of an EGS demonstration project Notes The reservoir is developed in fractured Proterozoic schist and quartzite, and Archean quartz monzonite cut by younger diabase intrusions. The basement complex was deformed during the mid Tertiary and covered by approximately 5000 ft of late Tertiary sedimentary and volcanic deposits. Listric normal faults of Cenozoic age disrupt the Tertiary deposits but do not offset the basement rocks. RRG-9, the target well, was drilled southwest of the main well field to a measured depth (MD) of 6089 ft. The well is deviated to the west and cased to a depth of 2316 ft MD. It

51

-1 -Conservation Activity Conceptual Models June 2008.doc CCF Measures of Conservation Success  

E-Print Network (OSTI)

- 1 -Conservation Activity Conceptual Models June 2008.doc CCF Measures of Conservation Success Conservation Activity Conceptual Models These models are flowchart-style representations of the generic processes by which different types of conservation activity can lead to conservation effects. The components

Foster, William A.

52

Assessment of effectiveness of geologic isolation systems. A conceptual simulation model for release scenario analysis of a hypothetical site in Columbia Plateau Basalts  

SciTech Connect

This report is a status report for an evolving methodology for release scenario development for underground nuclear waste repositories. As such, it is intended for use as a reference point and a preliminary description of an evolving geoscience methodology. When completed this methodology will be used as a tool in developing disruptive release scenarios for analyzing the long-term safety of geological nuclear waste repositories. While a basalt environment is used as an example, this report is not intended to reflect an actual site safety assessment for a repository in a media. It is rather intended to present a methodology system framework and to provide discussions of the geological phenomena and parameters that must be addressed in order to develop a methodology for potential release scenarios. It is also important to note that the phenomena, their interrelationships, and their relative importance along with the overall current structure of the model will change as new geological information is gathered through additional peer review, geotechnical input, site specific field work, and related research efforts.

Stottlemyre, J.A.; Petrie, G.M.; Benson, G.L.; Zellmer, J.T.

1981-01-01T23:59:59.000Z

53

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

54

A Conceptual Model of the Surface Salinity Distribution in the Oceanic Hadley Cell  

Science Conference Proceedings (OSTI)

A conceptual model of the salinity distribution in the oceanic Hadley cell is presented. The model pertains to the region of tropical easterly surface winds, where the surface salinity increases poleward from a local salinity minimum near the ...

Johan Nilsson; Heiner Körnich

2008-12-01T23:59:59.000Z

55

The Spallation Neutron Source (SNS) conceptual design shielding analysis  

SciTech Connect

The shielding design is important for the construction of an intense high-energy accelerator facility like the proposed Spallation Neutron Source (SNS) due to its impact on conventional facility design, maintenance operations, and since the cost for the radiation shielding shares a considerable part of the total facility costs. A calculational strategy utilizing coupled high energy Monte Carlo calculations and multi-dimensional discrete ordinates calculations, along with semi-empirical calculations, was implemented to perform the conceptual design shielding assessment of the proposed SNS. Biological shields have been designed and assessed for the proton beam transport system and associated beam dumps, the target station, and the target service cell and general remote maintenance cell. Shielding requirements have been assessed with respect to weight, space, and dose-rate constraints for operating, shutdown, and accident conditions. A discussion of the proposed facility design, conceptual design shielding requirements calculational strategy, source terms, preliminary results and conclusions, and recommendations for additional analyses are presented.

Johnson, J.O.; Odano, N.; Lillie, R.A.

1998-03-01T23:59:59.000Z

56

Conceptual geologic model and native state model of the Roosevelt Hot Springs hydrothermal system  

DOE Green Energy (OSTI)

A conceptual geologic model of the Roosevelt Hot Springs hydrothermal system was developed by a review of the available literature. The hydrothermal system consists of a meteoric recharge area in the Mineral Mountains, fluid circulation paths to depth, a heat source, and an outflow plume. A conceptual model based on the available data can be simulated in the native state using parameters that fall within observed ranges. The model temperatures, recharge rates, and fluid travel times are sensitive to the permeability in the Mineral Mountains. The simulation results suggests the presence of a magma chamber at depth as the likely heat source. A two-dimensional study of the hydrothermal system can be used to establish boundary conditions for further study of the geothermal reservoir.

Faulder, D.D.

1991-01-01T23:59:59.000Z

57

Conceptual geologic model and native state model of the Roosevelt Hot Springs hydrothermal system  

DOE Green Energy (OSTI)

A conceptual geologic model of the Roosevelt Hot Springs hydrothermal system was developed by a review of the available literature. The hydrothermal system consists of a meteoric recharge area in the Mineral Mountains, fluid circulation paths to depth, a heat source, and an outflow plume. A conceptual model based on the available data can be simulated in the native state using parameters that fall within observed ranges. The model temperatures, recharge rates, and fluid travel times are sensitive to the permeability in the Mineral Mountains. The simulation results suggests the presence of a magma chamber at depth as the likely heat source. A two-dimensional study of the hydrothermal system can be used to establish boundary conditions for further study of the geothermal reservoir. 33 refs., 9 figs.

Faulder, D.D.

1991-01-01T23:59:59.000Z

58

Influence of Recent Stratification Changes on ENSO Stability in a Conceptual Model of the Equatorial Pacific  

Science Conference Proceedings (OSTI)

Changes in the mean circulation of the equatorial Pacific Ocean partly control the strong decadal modulation of El Niño–Southern Oscillation (ENSO). This relationship is considered from the linear stability of a conceptual recharge/discharge model ...

Sulian Thual; Boris Dewitte; Soon-Il An; Serena Illig; Nadia Ayoub

2013-07-01T23:59:59.000Z

59

Conceptual Model At Salt Wells Area (Faulds, Et Al., 2011) | Open Energy  

Open Energy Info (EERE)

Conceptual Model At Salt Wells Area (Faulds, Et Al., 2011) Conceptual Model At Salt Wells Area (Faulds, Et Al., 2011) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Conceptual Model At Salt Wells Area (Faulds, Et Al., 2011) Exploration Activity Details Location Salt Wells Geothermal Area Exploration Technique Conceptual Model Activity Date 2011 Usefulness useful regional reconnaissance DOE-funding ARRA (American Recovery and Reinvestment Act) Exploration Basis The paper reports on the first phase of a three-stage DOE-ARRA (American Recovery and Reinvestment Act)-funded study that integrates knowledge of favorable structural settings in the Great Basin region with the goal of developing a structural catalogue that can be used to refine exploration strategies for geothermal resources (particularly for blind/hidden systems)

60

Ventilation Model and Analysis Report  

Science Conference Proceedings (OSTI)

This model and analysis report develops, validates, and implements a conceptual model for heat transfer in and around a ventilated emplacement drift. This conceptual model includes thermal radiation between the waste package and the drift wall, convection from the waste package and drift wall surfaces into the flowing air, and conduction in the surrounding host rock. These heat transfer processes are coupled and vary both temporally and spatially, so numerical and analytical methods are used to implement the mathematical equations which describe the conceptual model. These numerical and analytical methods predict the transient response of the system, at the drift scale, in terms of spatially varying temperatures and ventilation efficiencies. The ventilation efficiency describes the effectiveness of the ventilation process in removing radionuclide decay heat from the drift environment. An alternative conceptual model is also developed which evaluates the influence of water and water vapor mass transport on the ventilation efficiency. These effects are described using analytical methods which bound the contribution of latent heat to the system, quantify the effects of varying degrees of host rock saturation (and hence host rock thermal conductivity) on the ventilation efficiency, and evaluate the effects of vapor and enhanced vapor diffusion on the host rock thermal conductivity.

V. Chipman

2003-07-18T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Mathematical models towards self-organizing formal federation languages based on conceptual models of information exchange capabilities  

Science Conference Proceedings (OSTI)

Conceptual models capture information that is crucial for composability of legacy solutions that is not formally captured in the derived technical artifacts. It is necessary to make this information available for the selection (or elimination) of available ...

Andreas Tolk; Saikou Y Diallo; Charles D Turnitsa

2008-12-01T23:59:59.000Z

62

Conceptual design of an integrated technology model for carbon policy assessment.  

SciTech Connect

This report describes the conceptual design of a technology choice model for understanding strategies to reduce carbon intensity in the electricity sector. The report considers the major modeling issues affecting technology policy assessment and defines an implementable model construct. Further, the report delineates the basis causal structure of such a model and attempts to establish the technical/algorithmic viability of pursuing model development along with the associated analyses.

Backus, George A.; Dimotakes, Paul E. (NASA Jet Propulsion Laboratory, Pasadena, CA)

2011-01-01T23:59:59.000Z

63

A conceptual sedimentological-geostatistical model of aquifer heterogeneity based on outcrop studies  

Science Conference Proceedings (OSTI)

Three outcrop studies were conducted in deposits of different depositional environments. At each site, permeability measurements were obtained with an air-minipermeameter developed as part of this study. In addition, the geological units were mapped with either surveying, photographs, or both. Geostatistical analysis of the permeability data was performed to estimate the characteristics of the probability distribution function and the spatial correlation structure. The information obtained from the geological mapping was then compared with the results of the geostatistical analysis for any relationships that may exist. The main field site was located in the Albuquerque Basin of central New Mexico at an outcrop of the Pliocene-Pleistocene Sierra Ladrones Formation. The second study was conducted on the walls of waste pits in alluvial fan deposits at the Nevada Test Site. The third study was conducted on an outcrop of an eolian deposit (miocene) south of Socorro, New Mexico. The results of the three studies were then used to construct a conceptual model relating depositional environment to geostatistical models of heterogeneity. The model presented is largely qualitative but provides a basis for further hypothesis formulation and testing.

Davis, J.M.

1994-01-01T23:59:59.000Z

64

Conceptual Model of Offshore Wind Environmental Risk Evaluation System  

SciTech Connect

In this report we describe the development of the Environmental Risk Evaluation System (ERES), a risk-informed analytical process for estimating the environmental risks associated with the construction and operation of offshore wind energy generation projects. The development of ERES for offshore wind is closely allied to a concurrent process undertaken to examine environmental effects of marine and hydrokinetic (MHK) energy generation, although specific risk-relevant attributes will differ between the MHK and offshore wind domains. During FY10, a conceptual design of ERES for offshore wind will be developed. The offshore wind ERES mockup described in this report will provide a preview of the functionality of a fully developed risk evaluation system that will use risk assessment techniques to determine priority stressors on aquatic organisms and environments from specific technology aspects, identify key uncertainties underlying high-risk issues, compile a wide-range of data types in an innovative and flexible data organizing scheme, and inform planning and decision processes with a transparent and technically robust decision-support tool. A fully functional version of ERES for offshore wind will be developed in a subsequent phase of the project.

Anderson, Richard M.; Copping, Andrea E.; Van Cleve, Frances B.; Unwin, Stephen D.; Hamilton, Erin L.

2010-06-01T23:59:59.000Z

65

A conceptual model of estuarine freshwater inflow management  

Science Conference Proceedings (OSTI)

flow regimes for sustainable river management and the analysis of the environmental effects of hydro- logic alteration are both areas of active investiga- tion (e.g. ...

66

Sensitivity of ENSO to Stratification in a Recharge–Discharge Conceptual Model  

Science Conference Proceedings (OSTI)

El Niño–Southern Oscillation (ENSO) is driven by large-scale ocean–atmosphere interactions in the equatorial Pacific and is sensitive to change in the mean state. Whereas conceptual models of ENSO usually consider the depth of the thermocline to ...

Sulian Thual; Boris Dewitte; Soon-Il An; Nadia Ayoub

2011-08-01T23:59:59.000Z

67

Eliciting fuzzy distributions from experts for ranking conceptual risk model components  

Science Conference Proceedings (OSTI)

An expert elicitation methodology was developed to integrate scientific knowledge from many studies at different spatial and temporal scales. The methodology utilised a structured one-to-one interview to elicit scale-dependent conceptual models and expert-weightings ... Keywords: Elicitation, Expert opinion, Fuzzy number, Phosphorus, Uncertainty, Water framework directive

T. Page; A. L. Heathwaite; L. J. Thompson; L. Pope; R. Willows

2012-10-01T23:59:59.000Z

68

Towards an accurate functional size measurement procedure for conceptual models in an MDA environment  

Science Conference Proceedings (OSTI)

The accurate measurement of the functional size of applications that are automatically generated in MDA environments is a challenge for the software development industry. This paper introduces the OO-Method COSMIC Function Points (OOmCFP) procedure, ... Keywords: COSMIC, Conceptual modeling, Functional size measurement, MDA, Object orientation

Beatriz Marín; Oscar Pastor; Alain Abran

2010-05-01T23:59:59.000Z

69

Diabatic Effects on Late-Winter Cold Front Evolution: Conceptual and Numerical Model Evaluations  

Science Conference Proceedings (OSTI)

The impact of diabatic heating on late winter frontogenesis is evaluated both through conceptual scaling and the use of high-resolution Eta Model simulations of a strong but relatively dry cold surface front that occurred during the Storm-scale ...

William A. Gallus Jr.; Moti Segal

1999-07-01T23:59:59.000Z

70

Fog Forecasting for the Southern Region: A Conceptual Model Approach  

Science Conference Proceedings (OSTI)

The prediction of fog occurrence, extent, duration, and intensity remains difficult despite improvements in numerical guidance and modeling of the fog phenomenon. This is because of the dependency of fog on microphysical and mesoscale processes ...

Paul J. Croft; Russell L. Pfost; Jeffrey M. Medlin; G. Alan Johnson

1997-09-01T23:59:59.000Z

71

Finite automata models of quantized systems: conceptual status and outlook  

E-Print Network (OSTI)

Since Edward Moore, finite automata theory has been inspired by physics, in particular by quantum complementarity. We review automaton complementarity, reversible automata and the connections to generalized urn models. Recent developments in quantum information theory may have appropriate formalizations in the automaton context.

Karl Svozil

2002-09-15T23:59:59.000Z

72

A Stochastic Conceptual Modeling Approach for Examining the Effects of Climate Change on Streamflows in Mountain Basins  

Science Conference Proceedings (OSTI)

This study presents a modeling approach for examining how changes in climate affect streamflow in mesoscale mountain basins dominated by snowmelt runoff. A conceptual snowmelt-runoff model was developed that is forced by daily time series of ...

Peter R. Furey; Stephanie K. Kampf; Jordan S. Lanini; Andre Q. Dozier

2012-06-01T23:59:59.000Z

73

Conceptual design and systems analysis of photovoltaic power systems. Volume II. Systems. Revised final report  

DOE Green Energy (OSTI)

Conceptual designs were made and analyses were performed on three types of solar photovoltaic power systems. Included were Residential (1--10 kW), Intermediate (0.1--10 MW), and Central (50--1000 MW) Power Systems to be installed in the 1985 to 2000 time period. Detailed descriptions of each of the three systems studied, descriptions of the necessary subsystems, and discussions of the interfaces between them are presented. Included also are descriptions of system performance and system cost used to perform an economic analysis which assesses the value of each system.

Pittman, P.F.

1977-03-01T23:59:59.000Z

74

Conceptual design and systems analysis of photovoltaic power systems. Final report. Volume III(2). Technology  

DOE Green Energy (OSTI)

Conceptual designs were made and analyses were performed on three types of solar photovoltaic power systems. Included were Residential (1 to 10 kW), Intermediate (0.1 to 10 MW), and Central (50 to 1000 MW) Power Systems to be installed in the 1985 to 2000 time period. The following analyses and simulations are covered: residential power system computer simulations, intermediate power systems computer simulation, central power systems computer simulation, array comparative performance, utility economic and margin analyses, and financial analysis methodology.

Pittman, P.F.

1977-05-01T23:59:59.000Z

75

Evolution of the conceptual model of unsaturated zone hydrology at yucca mountain, nevada  

SciTech Connect

Yucca Mountain is an arid site proposed for consideration as the United States' first underground high-level radioactive waste repository. Low rainfall (approximately 170 mm/yr) and a thick unsaturated zone (500-1000 m) are important physical attributes of the site because the quantity of water likely to reach the waste and the paths and rates of movement of the water to the saturated zone under future climates would be major factors in controlling the concentrations and times of arrival of radionuclides at the surrounding accessible environment. The framework for understanding the hydrologic processes that occur at this site and that control how quickly water will penetrate through the unsaturated zone to the water table has evolved during the past 15 yr. Early conceptual models assumed that very small volumes of water infiltrated into the bedrock (0.5-4.5 mm/yr, or 2-3 percent of rainfall), that much of the infiltrated water flowed laterally within the upper nonwelded units because o f capillary barrier effects, and that the remaining water flowed down faults with a small amount flowing through the matrix of the lower welded, fractured rocks. It was believed that the matrix had to be saturated for fractures to show. However, accumulating evidence indicated that infiltration rates were higher than initially estimated, such as infiltration modeling based on neutron borehole data, bomb-pulse isotopes deep in the mountain, perched water analyses and thermal analyses. Mechanisms supporting lateral diversion did not apply at these higher fluxes, and the flux calculated in the lower welded unit exceeded the conductivity of the matrix, implying vertical flow of water into the high permeability fractures of the potential repository host rock, and disequilibrium between matrix and fracture water potentials. The development of numerical modeling methods and parameter values evolved concurrently with the conceptual model in order to account for the observed field data, particularly fracture flow deep in the unsaturated zone. This paper presents the history of the evolution of conceptual models of hydrology and numerical models of unsaturated zone flow at Yucca Mountain, Nevada (Flint, A.L., Flint, L.E., Kwicklis, E.M., Bodvarsson, G.S., Fabryka-Martin, J.M., 2001. Hydrology of Yucca Mountain. Reviews of Geophysics in press). This retrospective is the basis for recommendations for optimizing the efficiency with which a viable and robust conceptual model can be developed for a complex site. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 87

Flint, A. L.; Flint, L. E.; Bodvarsson, G. S.; Kwicklis, E. M.; Fabryka-Martin, J.

2001-02-01T23:59:59.000Z

76

Description and evaluation of a mechanistically based conceptual model for spall  

Science Conference Proceedings (OSTI)

A mechanistically based model for a possible spall event at the WIPP site is developed and evaluated in this report. Release of waste material to the surface during an inadvertent borehole intrusion is possible if future states of the repository include high gas pressure and waste material consisting of fine particulates having low mechanical strength. The conceptual model incorporates the physics of wellbore hydraulics coupled to transient gas flow to the intrusion borehole, and mechanical response of the waste. Degraded waste properties using of the model. The evaluations include both numerical and analytical implementations of the conceptual model. A tensile failure criterion is assumed appropriate for calculation of volumes of waste experiencing fragmentation. Calculations show that for repository gas pressures less than 12 MPa, no tensile failure occurs. Minimal volumes of material experience failure below gas pressure of 14 MPa. Repository conditions dictate that the probability of gas pressures exceeding 14 MPa is approximately 1%. For these conditions, a maximum failed volume of 0.25 m{sup 3} is calculated.

Hansen, F.D.; Knowles, M.K.; Thompson, T.W. [and others

1997-08-01T23:59:59.000Z

77

Conceptual model for regional radionuclide transport from a salt dome repository: a technical memorandum  

Science Conference Proceedings (OSTI)

Disposal of high-level radioactive wastes is a major environmental problem influencing further development of nuclear energy in this country. Salt domes in the Gulf Coast Basin are being investigated as repository sites. A major concern is geologic and hydrologic stability of candidate domes and potential transport of radionuclides by groundwater to the biosphere prior to their degradation to harmless levels of activity. This report conceptualizes a regional geohydrologic model for transport of radionuclides from a salt dome repository. The model considers transport pathways and the physical and chemical changes that would occur through time prior to the radionuclides reaching the biosphere. Necessary, but unknown inputs to the regional model involve entry and movement of fluids through the repository dome and across the dome-country rock interface and the effect on the dome and surrounding strata of heat generated by the radioactive wastes.

Kier, R.S.; Showalter, P.A.; Dettinger, M.D.

1980-05-30T23:59:59.000Z

78

An Updated Conceptual Model Of The Travale Geothermal Field Based On Recent  

Open Energy Info (EERE)

Travale Geothermal Field Based On Recent Travale Geothermal Field Based On Recent Geophysical And Drilling Data Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Updated Conceptual Model Of The Travale Geothermal Field Based On Recent Geophysical And Drilling Data Details Activities (0) Areas (0) Regions (0) Abstract: an updated picture of the Travale field is given, based on geophysical and drilling data acquired since 1978. In deriving the model, extensive use is made of the geophysical data produced in the course of the EEC test site programme (1980-1983), particularly from seismic and time domain EM methods which allowed for penetrating thick and conductive cover formations and to match deep tectonic and hydrothermal alteration trends thought to indirectly characterize the geothermal reservoir. It is

79

Application and performance analysis of neural networks for decision support in conceptual design  

Science Conference Proceedings (OSTI)

This paper analyzes the use of feedforward multilayer perceptron neural networks in the support of the decision process during the conceptual design phase of engineering systems. A user friendly software tool is proposed in order to increase the quality ... Keywords: Conceptual design, Decision support, Neural networks

Ivo M. L. Ferreira; Paulo J. S. Gil

2012-07-01T23:59:59.000Z

80

Conceptual modeling and development of an intelligent agent-assisted decision support system for anti-money laundering  

Science Conference Proceedings (OSTI)

Criminal elements in today's technology-driven society are using every means available at their disposal to launder the proceeds from their illegal activities. In response, international anti-money laundering (AML) efforts are being made. The events ... Keywords: Anti-money laundering, Business intelligence application, Conceptual model, Decision support systems, Intelligent agents

Shijia Gao; Dongming Xu

2009-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Conceptual model for regional radionuclide transport from a basalt repository site. Final draft, technical memorandum  

SciTech Connect

This technical memorandum was prepared to: (1) describe a typical basalt radionuclide repository site, (2) describe geologic and hydrologic processes associated with regional radionuclide transport in basalts, (3) define the parameters required to model regional radionuclide transport from a basalt repository site, and (4) develop a ''conceptual model'' of radionuclide transport from a basalt repository site. In a general hydrological sense, basalts may be described as layered sequences of aquifers and aquitards. The Columbia River Basalt, centered near the semi-arid Pasco Basin, is considered by many to be typical basalt repository host rock. Detailed description of the flow system including flow velocities with high-low hydraulic conductivity sequences are not possible with existing data. However, according to theory, waste-transport routes are ultimately towards the Columbia River and the lengths of flow paths from the repository to the biosphere may be relatively short. There are many physical, chemical, thermal, and nuclear processes with associated parameters that together determine the possible pattern of radionuclide migration in basalts and surrounding formations. Brief process descriptions and associated parameter lists are provided. Emphasis has been placed on the use of the distribution coefficient in simulating ion exchange. The use of the distribution coefficient approach is limited because it takes into account only relatively fast mass transfer processes. In general, knowledge of hydrogeochemical processes is primitive.

Walton, W.C.; Voorhees, M.L.; Prickett, T.A.

1980-05-23T23:59:59.000Z

82

Differential Effects of the Manipulation of Endoplasmic Reticulum Data Sets Using Image J Analysis Software for Conceptual Understanding in a College Biology Course  

E-Print Network (OSTI)

There has been an influx of funding in science, technology, engineering and mathematics (STEM) allocated to adapting educational systems that engage, motivate and train learners with new and innovative techniques. This exploratory research project investigated the student outcomes associated with undergraduate biology learner' engagements in the ER Project. Thirty-one students interacted in small groups within an inquiry-learning environment supported by an innovative technology that introduced a database of images of green florescent endoplasmic reticulum and golgi apparatus. The aim of the ER Project was to increase learners' conceptual understanding of cell structure and movement and engage in scientific processes in an authentic inquiry setting. To identify relationships between and among independent and dependent variables in a causal model hypothesizing relationships among Prior Knowledge, Learning Preference, Attitudes toward Computers, Inquiry Task Performance and Conceptual Understanding were tested using path analysis. The study found that while prior knowledge was a strong predictor for conceptual understanding, it was not as effective for observing the inquiry task performance. But, the Motivation towards Computers and their Inquiry Task Performance indicated that learners understood the scientific processes and were able to communicate their results.

Lane, Cleveland O., Jr.

2010-12-01T23:59:59.000Z

83

Analysis of advanced conceptual designs for single-family-sized absorption chillers. Semi-annual report  

DOE Green Energy (OSTI)

The objective of the research program is to develop and analyze new concepts for absorption cycles to improve the performance or reduce the cost (or both) of a 3-ton absorption chiller that can be used with solar-collected heat. New refrigerant-absorbent pairs, additives to currently used refrigerant-absorbent pairs, and modifications to the cycle are being investigated. For the initial analyses the use of a fluid at 160 to 230/sup 0/F from a solar collector as a heating source is assumed. In the initial analyses the chiller is to provide chilled water at 45/sup 0/F at full load; alternatively, if a new refrigerant-absorbent pair appears to be amenable for direct cooling of the occupied space, the temperature of the evaporator is to be 45/sup 0/F. Both water cooling and air cooling of the absorber and the condenser are being studied. The use of ambient air at 95/sup 0/F dry bulb and 75/sup 0/F wet bulb temperatures is assumed. With the water-cooled cycles, the initial and operating costs of a properly sized cooling tower will be included. The research consists of five principal tasks: (a) acquisition of information for analysis, (b) definition of criteria for selection of promising refrigerant-absorbent pairs, additives for currently used pairs, or cycle modifications, (c) preparation and analysis of conceptual designs, (d) comparison and selection of the promising new systems that warrant further study, and (e) recommendations for further research for each promising new system. Progress on each of these tasks is described. (WHK)

None

1978-04-05T23:59:59.000Z

84

Advanced Conceptual Models for Unsaturated and Two-Phase Flow in Fractured Rock  

DOE Green Energy (OSTI)

This project was initiated in FY03. As of December 2003, we have accomplished the following: (1) We conducted a more detailed evaluation of the preliminary experiments used to develop our investigative approach. In those experiments, water was invaded at a variety of flow rates into an air-filled, two dimensional analog fracture network. Results demonstrated the critical control that fracture intersections place on two-phase flow in fracture networks. At low flows, capillary and gravitational forces combined to create a narrow pulsing flow structure that spanned the system vertically. At higher flows, viscous forces acted to remove the pulsation; however, the flow structure remained narrow. The intersections acted to impose a narrow ''slender ladder'' structure on the flowing phase that did not expand with depth, but instead remained focused. A manuscript documenting this effort has been published in Water Resources Research [Glass et al., 2003a]. (2) We initiated a collaborative relationship with a research group at Seoul National University. This group, which is led by Dr. Kang-Kun Lee is also using a combined experimental numerical approach to consider DNAPL migration in fracture networks. They are particularly interested in the influence of ambient groundwater flows, making their work complementary to ours. The first fruit of that collaboration is an article demonstrating that modification of an Invasion Percolation algorithm to include gravity and the first-order effects of viscous forces shows good agreement with physical experiments in a simplistic fracture network. Results were published in Geophysical Research Letters [Ji et al., 2003a]. (3) We carried out an extensive review of models for fracture networks. These include models developed from observations of networks on outcrops at several scales and stochastic models that are prevalent in the literature from the 1980s to very recent developments. The results of this review were included as par t of a review paper co-authored by Rajaram, which was submitted to Reviews in Geophysics [Molz et al., in press]. (4) We prepared a manuscript based on previous work that will be used to support the development of our new conceptual model(s) for transport in fractured rock. Eight experiments were conducted to evaluate the repeatability of flow under nearly identical conditions and to characterize general patterns in flow behavior. Collected data revealed that flow generally converged to a single fracture in the bottom row of blocks. Periods of pathway switching were observed to be more common than periods with steady, constant flow pathways. We noted the importance of fracture intersections for integrating uniform flow and discharging a ''fluid cascade'', where water advances rapidly to the next capillary barrier creating a stop and start advance of water through the network. The results of this simple experiment suggest that the interaction of multiple fracture intersections in a network creates flow behavior not generally recognized in popular conceptual and numerical models. A manuscript documenting this effort has been accepted for publication in Vadose Zone Journal [Wood et al., 2003]. (5) Slender transport pathways have been found in laboratory and field experiments within unsaturated fractured rock. We considered the simulation of such structures with a Modified form of Invasion Percolation (MIP). Results show that slender pathways form in fracture networks for a wide range of expected conditions, can be maintained when subsequent matrix imbibition is imposed, and may arise even in the context of primarily matrix flow due to the action of fractures as barriers to inter-matrix block transport. A manuscript documenting this effort has been submitted to Geophysical Research Letters [Glass et al., 2003b].

Rajaram, Harihar

2003-06-01T23:59:59.000Z

85

A comparative evaluation of conceptual models for the Snake River Plain aquifer at the Idaho Chemical Processing Plant, INEL  

SciTech Connect

Geologic and hydrologic data collected by the United States Geological Survey (USGS) are used to evaluate the existing ground water monitoring well network completed in the upper portion of the Snake River Plain aquifer (SRPA) beneath the Idaho Chemical Processing Plant (ICPP). The USGS data analyzed and compared in this study include: (a) lithologic, geophysical, and stratigraphic information, including the conceptual geologic models intrawell, ground water flow measurement (Tracejector tests) and (c) dedicated, submersible, sampling group elevations. Qualitative evaluation of these data indicate that the upper portion of the SRPA is both heterogeneous and anisotropic at the scale of the ICPP monitoring well network. Tracejector test results indicate that the hydraulic interconnection and spatial configuration of water-producing zones is extremely complex within the upper portion of the SRPA. The majority of ICPP monitoring wells currently are equipped to sample ground water only the upper lithostratigraphic intervals of the SRPA, primarily basalt flow groups E, EF, and F. Depth-specific hydrogeochemical sampling and analysis are necessary to determine if ground water quality varies significantly between the various lithostratigraphic units adjacent to individual sampling pumps.

Prahl, C.J.

1992-01-01T23:59:59.000Z

86

NREL: Energy Analysis - Geothermal Technology Analysis Models...  

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

Integration Energy Analysis Search More Search Options Site Map Printable Version Geothermal Technology Analysis Models and Tools The following is a list of models and tools...

87

Conceptual design and systems analysis of photovoltaic power systems. Volume III(1). Technology  

DOE Green Energy (OSTI)

Conceptual designs were made and analyses were performed on three types of solar photovoltaic power systems. Included were Residential (1 to 10 kW), Intermediate (0.1 to 10 MW), and Central (50 to 1000 MW) Power Systems to be installed in the 1985 to 2000 time period. Subsystem technology presented here includes: insolation, concentration, silicon solar cell modules, CdS solar cell module, array structure, battery energy storage, power conditioning, residential power system architectural designs, intermediate power system structural design, and central power system facilities and site survey.

Pittman, P.F.

1977-05-01T23:59:59.000Z

88

Conceptual design and systems analysis of photovoltaic systems. Volume II. Study results. Final report  

DOE Green Energy (OSTI)

This investigation of terrestrial PV systems considered the technical and economic feasibility for systems in three size categories: a small system of about 12 kW peak output for on-site residential use; a large 1500 MW central power plant contributing to the bulk energy of a utility system power grid; and an intermediate size system of about 250 kW for use on public or commercial buildings. In each category, conceptual designs were developed, performance was analyzed for a range of climatic regions, economic analyses were performed, and assessments were made of pertinent institutional issues. The report consists of three volumes. Volume I contains a Study Summary of the major study results. This volume contains the detailed results pertaining to on-site residential photovoltaic systems, central power plant photovoltaic systems, and intermediate size systems applied to commercial and public buildings. Volume III contains supporting appendix material. (WHK)

Kirpich, A.

1977-03-19T23:59:59.000Z

89

Analysis of boiling experiment using inverse modeling  

DOE Green Energy (OSTI)

Numerical predictions of geothermal reservoir behavior strongly depend on the assumed steam-water relative permeabilities, which are difficult and time-consuming to measure in the laboratory. This paper describes the esti- mation of the parameters of the relative per- meability and capillary pressure functions by automatically matching simulation results to data from a transient boiling experiment performed on a Berea sandstone. A sensitivity analysis reveals the strong dependence of the observed system behavior on effects such as heat transfer from the heater to the core, as well as heat losses through the insulation. Parameters of three conceptual models were estimated by inverse modeling. Each calibra- tion yields consistent effective steam perme- abilities, but the shape of the liquid relative permeability remains ambiguous.

Finsterle, S.; Guerrero, M.; Satik, C.

1998-05-01T23:59:59.000Z

90

Groundwater monitoring program plan and conceptual site model for the Al-Tuwaitha Nuclear Research Center in Iraq.  

Science Conference Proceedings (OSTI)

The Radiation Protection Center of the Iraqi Ministry of Environment is developing a groundwater monitoring program (GMP) for the Al-Tuwaitha Nuclear Research Center located near Baghdad, Iraq. The Al-Tuwaitha Nuclear Research Center was established in about 1960 and is currently being cleaned-up and decommissioned by Iraq's Ministry of Science and Technology. This Groundwater Monitoring Program Plan (GMPP) and Conceptual Site Model (CSM) support the Radiation Protection Center by providing:A CSM describing the hydrogeologic regime and contaminant issues,recommendations for future groundwater characterization activities, anddescriptions of the organizational elements of a groundwater monitoring program. The Conceptual Site Model identifies a number of potential sources of groundwater contamination at Al-Tuwaitha. The model also identifies two water-bearing zones (a shallow groundwater zone and a regional aquifer). The depth to the shallow groundwater zone varies from approximately 7 to 10 meters (m) across the facility. The shallow groundwater zone is composed of a layer of silty sand and fine sand that does not extend laterally across the entire facility. An approximately 4-m thick layer of clay underlies the shallow groundwater zone. The depth to the regional aquifer varies from approximately 14 to 17 m across the facility. The regional aquifer is composed of interfingering layers of silty sand, fine-grained sand, and medium-grained sand. Based on the limited analyses described in this report, there is no severe contamination of the groundwater at Al-Tuwaitha with radioactive constituents. However, significant data gaps exist and this plan recommends the installation of additional groundwater monitoring wells and conducting additional types of radiological and chemical analyses.

Copland, John Robin; Cochran, John Russell

2013-07-01T23:59:59.000Z

91

Groundwater monitoring program plan and conceptual site model for the Al-Tuwaitha Nuclear Research Center in Iraq.  

SciTech Connect

The Radiation Protection Center of the Iraqi Ministry of Environment is developing a groundwater monitoring program (GMP) for the Al-Tuwaitha Nuclear Research Center located near Baghdad, Iraq. The Al-Tuwaitha Nuclear Research Center was established in about 1960 and is currently being cleaned-up and decommissioned by Iraq's Ministry of Science and Technology. This Groundwater Monitoring Program Plan (GMPP) and Conceptual Site Model (CSM) support the Radiation Protection Center by providing:A CSM describing the hydrogeologic regime and contaminant issues,recommendations for future groundwater characterization activities, anddescriptions of the organizational elements of a groundwater monitoring program. The Conceptual Site Model identifies a number of potential sources of groundwater contamination at Al-Tuwaitha. The model also identifies two water-bearing zones (a shallow groundwater zone and a regional aquifer). The depth to the shallow groundwater zone varies from approximately 7 to 10 meters (m) across the facility. The shallow groundwater zone is composed of a layer of silty sand and fine sand that does not extend laterally across the entire facility. An approximately 4-m thick layer of clay underlies the shallow groundwater zone. The depth to the regional aquifer varies from approximately 14 to 17 m across the facility. The regional aquifer is composed of interfingering layers of silty sand, fine-grained sand, and medium-grained sand. Based on the limited analyses described in this report, there is no severe contamination of the groundwater at Al-Tuwaitha with radioactive constituents. However, significant data gaps exist and this plan recommends the installation of additional groundwater monitoring wells and conducting additional types of radiological and chemical analyses.

Copland, John Robin; Cochran, John Russell

2013-07-01T23:59:59.000Z

92

Conceptual Design of a CERMET NTR Fission Core Using Multiphysics Modeling Techniques  

SciTech Connect

An initial pre-conceptual CERMET Nuclear Thermal Propulsion reactor system is investigated within this paper. Reactor configurations are investigated where the fuel consists of 60 vol.% UO2 and 40 vol.% W where the UO2 consists of Gd2O3 concentrations of 5 and 10 mol.%.Gd2O3. The fuel configuration consisting of 5 mol.% UO2 was found to have a total mass of 2761 kg and a thrust to weight ratio of 4.10 and required a coolant channel surface area to fueled volume ratio of approximately 15.0 in order to keep the centerline temperature below 3000 K. The configuration consisting of 10 mol.% Gd2O3 required a surface area to volume ratio of approximately 12.2 to cool the reactor to a peak temperature of 3000 K and had a total mass of 3200 kg and a thrust to weight ratio of 3.54. It is not known yet what concentration of Gd2O3 is required to maintain fuel stability at 3000 K; however, both reactors offer the potential for operations at 25,000 lb, and at a specific impulse which may range from 900 to 950 seconds.

Jonathan A. Webb; Brian J. Gross; William T. Taitano

2011-08-01T23:59:59.000Z

93

Models in Decision Analysis  

E-Print Network (OSTI)

Any statistical analysis or decision analysis contains numerical inputs of which we are unsure. Some of our uncertainty arises from physical randomness which we can model in various ways, ideally through probability. Some relates to judgmental estimates of qualities about which we may be unsure in many different respects. There are other uncertainties involved, however: some relates to ambiguity and imprecision of meaning; some relate to lack of clarity in the objectives which the analysis seeks to meet; some relate to the numerical accuracy of calculations. Suppose, for instance, that we need to consider the probability of a conservative government being returned at the next election. The probability, a subjective probability, itself is a number that the statistician or decision maker has to judge. In some ways it may be related to 'hard' data, but there will always be an element of judgement in setting its value. But one might also ask: what is meant by a 'conservative' government; ...

Simon French

1993-01-01T23:59:59.000Z

94

Impact of Proposed Disturbed Rock Zone Conceptual Model Modifications to the Waste Isolation Pilot Plant Performance Assessment  

Science Conference Proceedings (OSTI)

The United States Department of Energy (DOE) and Sandia National Laboratories (SNL) have recently proposed a set of updates that integrate data from recent site characterization studies to two conceptual models for the Waste Isolation Pilot Plant's Performance Assessment (WIPP PA) program. This paper discusses the changes to the Disturbed Rock Zone (DRZ) model, which describes the macroscopic manifestation of grain-scale microcracks and larger macro-cracks that are created by induced stresses in the salt surrounding excavations. The DRZ, as modeled in WIPP PA, is an important component of the repository system because its properties affect the quantity of available brine and its ability to enter the waste areas as well as the connectivity of panels after closure. The DOE and SNL have proposed decreasing the region that represents the DRZ in WIPP PA. Additionally, it has been proposed to make the permeability of DRZ a time-dependent quantity to reflect the long-term behavior. In this paper, the implementation of the proposed DRZ model changes is outlined, and the impact of the DRZ modifications on the long-term performance of the WIPP is discussed. The DRZ modifications generally reduced the amount of brine that entered into the repository, as well as reduced the pressure in the repository, except for scenarios in which a pressurized brine pocket was encountered. Overall, the saturation and pressure changes affected the frequency and magnitude of the direct brine and spalling volumes. (authors)

Clayton, D.J.; Ismail, A.E. [Sandia National Laboratories, Carlsbad, NM (United States)

2008-07-01T23:59:59.000Z

95

Ocean Gyres and Abrupt Change in the Thermohaline Circulation: A Conceptual Analysis  

Science Conference Proceedings (OSTI)

The implications are investigated of representing ocean gyre circulations by a diffusion term in the Stommel and Rooth box models of the thermohaline circulation (THC) in one and two hemispheres, respectively. The approach includes mostly ...

Hannah Longworth; Jochem Marotzke; Thomas F. Stocker

2005-07-01T23:59:59.000Z

96

SDI CFD MODELING ANALYSIS  

SciTech Connect

The Savannah River Remediation (SRR) Organization requested that Savannah River National Laboratory (SRNL) develop a Computational Fluid Dynamics (CFD) method to mix and blend the miscible contents of the blend tanks to ensure the contents are properly blended before they are transferred from the blend tank; such as, Tank 50H, to the Salt Waste Processing Facility (SWPF) feed tank. The work described here consists of two modeling areas. They are the mixing modeling analysis during miscible liquid blending operation, and the flow pattern analysis during transfer operation of the blended liquid. The transient CFD governing equations consisting of three momentum equations, one mass balance, two turbulence transport equations for kinetic energy and dissipation rate, and one species transport were solved by an iterative technique until the species concentrations of tank fluid were in equilibrium. The steady-state flow solutions for the entire tank fluid were used for flow pattern analysis, for velocity scaling analysis, and the initial conditions for transient blending calculations. A series of the modeling calculations were performed to estimate the blending times for various jet flow conditions, and to investigate the impact of the cooling coils on the blending time of the tank contents. The modeling results were benchmarked against the pilot scale test results. All of the flow and mixing models were performed with the nozzles installed at the mid-elevation, and parallel to the tank wall. From the CFD modeling calculations, the main results are summarized as follows: (1) The benchmark analyses for the CFD flow velocity and blending models demonstrate their consistency with Engineering Development Laboratory (EDL) and literature test results in terms of local velocity measurements and experimental observations. Thus, an application of the established criterion to SRS full scale tank will provide a better, physically-based estimate of the required mixing time, and elevation of transfer pump for minimum sludge disturbance. (2) An empirical equation for a tank with no cooling coils agrees reasonably with the current modeling results for the dual jet. (3) From the sensitivity study of the cooling coils, it was found that the tank mixing time for the coiled tank was about two times longer than that of the tank fluid with no coils under the 1/10th scale, while the coiled tank required only 50% longer than the one without coils under the full scale Tank 50H. In addition, the time difference is reduced when the pumping U{sub o}d{sub o} value is increased for a given tank. (4) The blending time for T-shape dual jet pump is about 20% longer than that of 15{sup o} upward V-shape pump under the 1/10th pilot-scale tank, while the time difference between the two pumps is about 12% for the full-scale Tank 50H. These results are consistent with the literature information. (5) A transfer pump with a solid-plate suction screen operating at 130 gpm can be located 9.5 inches above settled sludge for 2 in screen height in a 85 ft waste tank without disturbing any sludge. Detailed results are summarized in Table 13. Final pump performance calculations were made by using the established CW pump design, and operating conditions to satisfy the two requirements of minimum sludge disturbance, and adequate blending of tank contents. The final calculation results show that the blending times for the coiled and uncoiled tanks coupled with the CW pump design are 159 and 83 minutes, respectively. All the results are provided in Table 16.

Lee, S.

2011-05-05T23:59:59.000Z

97

Developing physical surrogates for benthic biodiversity using co-located samples and regression tree models: a conceptual synthesis for a sandy temperate embayment  

Science Conference Proceedings (OSTI)

Marine physical and geochemical data can be valuable surrogates for predicting the distributions and assemblages of marine species. This study investigated the bio-environment surrogacy relationships in Jervis Bay, a sandy marine embayment in south-eastern ... Keywords: Jervis Bay, benthic biodiversity, conceptual model, surrogates

Zhi Huang; Matthew McArthur; Lynda Radke; Tara Anderson; Scott Nichol; Justy Siwabessy; Brendan Brooke

2012-11-01T23:59:59.000Z

98

Advanced Turbine Systems Program, Conceptual Design and Product Development. Task 6, System definition and analysis  

DOE Green Energy (OSTI)

The strategy of the ATS program is to develop a new baseline for industrial gas turbine systems for the 21st century, meeting the buying criteria of industrial gas turbine end users, and having growth potential. These criteria guided the Solar ATS Team in selecting the system definition described in this Topical Report. The key to selecting the ATS system definition was meeting or exceeding each technical goal without negatively impacting other commercial goals. Among the most crucial goals are the buying criteria of the industrial gas turbine market. Solar started by preliminarily considering several cycles with the potential to meet ATS program goals. These candidates were initially narrowed based on a qualitative assessment of several factors such as the potential for meeting program goals and for future growth; the probability of successful demonstration within the program`s schedule and expected level of funding; and the appropriateness of the cycle in light of end users` buying criteria. A first level Quality Function Deployment (QFD) analysis then translated customer needs into functional requirements, and ensured favorable interaction between concept features. Based on this analysis, Solar selected a recuperated cycle as the best approach to fulfilling both D.O.E. and Solar marketing goals. This report details the design and analysis of the selected engine concept, and explains how advanced features of system components achieve program goals. Estimates of cost, performance, emissions and RAMD (reliability, availability, maintainability, durability) are also documented in this report.

NONE

1995-04-01T23:59:59.000Z

99

Comparing simulations of three conceptually different forest models with National Forest Inventory data  

Science Conference Proceedings (OSTI)

Although they were originally introduced for different purposes, forest models are often used today for scenario development, which includes forest production as one aspect of forest development. However, studies using an independent data set to compare ... Keywords: Climate change, Ecosystem model, Forest growth, Increment, Sensitivity, Simulator

Markus O. Huber; Chris S. Eastaugh; Thomas Gschwantner; Hubert Hasenauer; Georg Kindermann; Thomas Ledermann; Manfred J. Lexer; Werner Rammer; Stefan SchöRghuber; Hubert Sterba

2013-02-01T23:59:59.000Z

100

Piecewise Linear Modeling and Analysis  

Science Conference Proceedings (OSTI)

From the Publisher:Piecewise Linear Modeling and Analysis explains in detail all possible model descriptions to efficiently store piecewise linear functions starting with the Chua descriptions. Detailed explanation on how the model parameter can be obtained ...

Domine M. W. Leenaerts; Wim M. Van Bokhoven

1998-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Numerical Simulations and a Conceptual Model of the Stratocumulus to Trade Cumulus Transition  

Science Conference Proceedings (OSTI)

A two-dimensional eddy-resolving model is used to study the transition from the stratocumulus topped boundary layer to the trade cumulus boundary layer. The 10-day simulations use an idealized Lagrangian trajectory representative of summertime ...

Matthew C. Wyant; Christopher S. Bretherton; Hugh A. Rand; David E. Stevens

1997-01-01T23:59:59.000Z

102

Conceptual design and analysis of a 100-MWe line focus solar central power plant. Test plan  

DOE Green Energy (OSTI)

Plans for a test program are presented whose objectives are: to verify the overall efficiency of a linear parabolic trough solar collector with varied receiver tube subsystem configurations; to compare surface temperatures, and efficiency values to derived values from an analytical model; and to identify the optimal receivr tube and annulus combination as determined by economical, optical, and thermal efficiency. The test facility to be used is described with the aid ofnumerous photographs. The range in conditions under which testing is to be done is briefly described. The instrumentation and measurement plans for the tests are described, and include thermal, flow, and meteorological data. Th data acquisition and processing system is outlined. Means are discussed for calculating efficiency and thermal loss, and requirements for statistical data are given. The test schedule is diagrammed and discussed. (LEW)

Semmens, M.G.; Fong, A.; Collaros, G.J.; Dascher, R.E.; Grassberger, R.E.; Griego, D.B.; Suteber, T.F.

103

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

104

Hydrogen Delivery Analysis Models  

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

model for delivery system component costs and performance: Components Model Delivery scenario model for Urban and Rural Interstate markets and demand levels (Mkt....

105

Towards a Conceptual Model of User Acceptance of Location-Based Emergency Services  

Science Conference Proceedings (OSTI)

This paper investigates the introduction of location-based services by government as part of an all-hazards approach to modern emergency management solutions. Its main contribution is in exploring the determinants of an individual's acceptance or rejection ... Keywords: Acceptance, Location-Based Emergency Services, Privacy, Risk, Service Quality, Technology Acceptance Model TAM, Theory of Reasoned Action TRA, Trust, Visibility

Anas Aloudat, Katina Michael

2013-04-01T23:59:59.000Z

106

Evaluating Sustainability and Greening Methods: A Conceptual Model for Information Technology Management  

Science Conference Proceedings (OSTI)

Recently much has been written about sustainability and greening and the issue is likely to continue to resurface on the agendas of decision makers. This paper addresses one aspect of the topic: that of sustainability and greening through information ... Keywords: Capability Maturity Model, Green Maturity Assessment GMA, Greening, Information Technology, Sustainability

Olga Petkova, A.T. Jarmoszko, Marianne D'Onofrio, Joo Eng Lee-Partridge

2013-07-01T23:59:59.000Z

107

Choice and Chance: A Conceptual Model of Paths to Information Security Compromise  

Science Conference Proceedings (OSTI)

No longer the exclusive domain of technology experts, information security is now a management issue. Through a grounded approach using interviews, observations, and secondary data, we advance a model of the information security compromise process from ... Keywords: computer crime, information security management, information systems risk management

Sam Ransbotham; Sabyasachi Mitra

2009-03-01T23:59:59.000Z

108

LBL research on The Geysers: Conceptual models, simulation and monitoring studies  

DOE Green Energy (OSTI)

As part of The Geysers research activities of DOE's Geothermal Reservoir Technology Program, LBL, in close co-operation with industry, is performing fundamental and applied studies of vapor- dominated geothermal systems. These studies include the development of new methods for evaluating cold water injection, monitoring of the seismic activity in The Geysers associated with injection and production, interpretation of pressure and geochemical changes measured during well tests and long-term production and injection operations, and improvement of existing models of the geothermal system. A review is given of the latest results of DOE-sponsored LBL reservoir engineering and seismic studies relevant to The Geysers.

Bodvarsson, G.S.; Lippmann, M.J.; Majer, E.L.; Pruess, K.

1992-03-01T23:59:59.000Z

109

LBL Research on the Geysers: Conceptual Models, Simulation and Monitoring Studies  

DOE Green Energy (OSTI)

As part of The Geysers research activities of DOE's Geothermal Reservoir Technology Program, LBL, in close cooperation with industry, is performing fundamental and applied studies of vapor-dominated geothermal systems. These studies include the development of new methods for evaluating cold water injection, monitoring of the seismic activity in The Geysers associated with injection and production, interpretation of pressure and geochemical changes measured during well tests and long-term production and injection operations, and improvement of existing models of the geothermal system. A review is given of the latest results of DOE-sponsored LBL reservoir engineering and seismic studies relevant to The Geysers.

Bodvarsson, G.S.; Lippmann, M.J.; Majer, E.L.; Pruess, K.

1992-03-24T23:59:59.000Z

110

LBL research on The Geysers: Conceptual models, simulation and monitoring studies  

DOE Green Energy (OSTI)

As part of The Geysers research activities of DOE`s Geothermal Reservoir Technology Program, LBL, in close co-operation with industry, is performing fundamental and applied studies of vapor- dominated geothermal systems. These studies include the development of new methods for evaluating cold water injection, monitoring of the seismic activity in The Geysers associated with injection and production, interpretation of pressure and geochemical changes measured during well tests and long-term production and injection operations, and improvement of existing models of the geothermal system. A review is given of the latest results of DOE-sponsored LBL reservoir engineering and seismic studies relevant to The Geysers.

Bodvarsson, G.S.; Lippmann, M.J.; Majer, E.L.; Pruess, K.

1982-03-01T23:59:59.000Z

111

The Newcastle geothermal system, Iron County, Utah: Geology, hydrology, and conceptual model  

DOE Green Energy (OSTI)

This appendix contains raw data used in the fault slip analysis. Data was collected from four sites, sites A through D. Minor fault slip measurements are listed for each site, and each row of data is one measurement. The index number is an arbitrary sequential number. Strike is the strike of the fault plane, measured in the northern hemisphere. Dip is the dip of the fault plane, which has two letters attached to the end showing the quadrant of the dip direction. Rake is the rake of the slickenside in the plane of the fault, which has two letters attached to the end showing the quadrant of the plunge direction of the rake. Sense is the sense of slip of the fault: N = normal (rake > 45{degree}), R = reverse (rake > 45{degree}), D = dextral (rake < 45{degree}), S = sinistral (rake < 45{degree}). 37 figs., 19 tabs.

Blackett, R.E.; Shubat, M.A.; Bishop, C.E. (Utah Geological and Mineral Survey, Salt Lake City, UT (USA)); Chapman, D.S.; Forster, C.B.; Schlinger, C.M. (Utah Univ., Salt Lake City, UT (USA). Dept. of Geology and Geophysics)

1990-03-01T23:59:59.000Z

112

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

Science Conference Proceedings (OSTI)

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

Andrew Seltzer

2005-01-01T23:59:59.000Z

113

Use of GIS and 3D Modeling for Development and Conceptualization of a Performance Assessment Model for Decommissioning of a Complex Site  

Science Conference Proceedings (OSTI)

Geographic Information Systems (GIS) and 3D geo-spatial modeling were employed to facilitate development and conceptualization of a performance assessment (PA) model that will be used to evaluate the health impacts of residual radioactivity at a former nuclear materials processing facility site in New York. Previous operations have resulted in a number of different sources of radiological contamination that must be assessed during site decommissioning. A performance assessment model is being developed to estimate radiological dose to potential receptors through the simulation of the release and transport of radionuclides, and exposure to residual contamination for hundreds to thousands of years in the future. A variety of inputs are required to parameterize the performance assessment model, such as: distance from the waste to surface water bodies, thickness of geologic units for saturated transport, saturated thickness of the geologic units, and spatial and temporal average of percent of waste that is saturated. GIS and 3D modeling are used to analyze and abstract aleatory uncertainty associated with the dimensionality of the geologic system into epistemic uncertainty for one- and two-dimensional process models for flow and transport of radionuclides. Three-dimensional geo-spatial modeling was used to develop the geologic framework and the geometrical representation of the residual contamination within the geologic framework. GIS was used in the initial development and parameterization of the transport pathways, to provide spatial context to the PA model, and to link it to the 3D geologic framework and contamination geometry models. Both the GIS and 3-D modeling were used to interpret the results of runs of the PA model. (authors)

Esh, D. W.; Gross, A. J.; Thaggard, M. [U.S. Nuclear Regulatory Commission, Two White Flint North, MS T7J8, 11545 Rockville Pike, Rockville, MD 20852 (United States)

2006-07-01T23:59:59.000Z

114

Combined Estimation of Hydrogeologic Conceptual Model, Parameter, and Scenario Uncertainty with Application to Uranium Transport at the Hanford Site 300 Area  

SciTech Connect

This report to the Nuclear Regulatory Commission (NRC) describes the development and application of a methodology to systematically and quantitatively assess predictive uncertainty in groundwater flow and transport modeling that considers the combined impact of hydrogeologic uncertainties associated with the conceptual-mathematical basis of a model, model parameters, and the scenario to which the model is applied. The methodology is based on a n extension of a Maximum Likelihood implementation of Bayesian Model Averaging. Model uncertainty is represented by postulating a discrete set of alternative conceptual models for a site with associated prior model probabilities that reflect a belief about the relative plausibility of each model based on its apparent consistency with available knowledge and data. Posterior model probabilities are computed and parameter uncertainty is estimated by calibrating each model to observed system behavior; prior parameter estimates are optionally included. Scenario uncertainty is represented as a discrete set of alternative future conditions affecting boundary conditions, source/sink terms, or other aspects of the models, with associated prior scenario probabilities. A joint assessment of uncertainty results from combining model predictions computed under each scenario using as weight the posterior model and prior scenario probabilities. The uncertainty methodology was applied to modeling of groundwater flow and uranium transport at the Hanford Site 300 Area. Eight alternative models representing uncertainty in the hydrogeologic and geochemical properties as well as the temporal variability were considered. Two scenarios represent alternative future behavior of the Columbia River adjacent to the site were considered. The scenario alternatives were implemented in the models through the boundary conditions. Results demonstrate the feasibility of applying a comprehensive uncertainty assessment to large-scale, detailed groundwater flow and transport modeling and illustrate the benefits of the methodology I providing better estimates of predictive uncertiay8, quantitative results for use in assessing risk, and an improved understanding of the system behavior and the limitations of the models.

Meyer, Philip D.; Ye, Ming; Rockhold, Mark L.; Neuman, Shlomo P.; Cantrell, Kirk J.

2007-07-30T23:59:59.000Z

115

Furnace and Heat Recovery Area Design and Analysis for Conceptual Design of Supercritical O2-Based PC Boiler  

Science Conference Proceedings (OSTI)

The objective of the furnace and heat recovery area design and analysis task of the Conceptual Design of Supercritical Oxygen-Based PC Boiler study is to optimize the location and design of the furnace, burners, over-fire gas ports, and internal radiant surfaces. The furnace and heat recovery area were designed and analyzed using the FW-FIRE, Siemens, and HEATEX computer programs. The furnace is designed with opposed wall-firing burners and over-fire air ports. Water is circulated in the furnace by forced circulation to the waterwalls at the periphery and divisional wall panels within the furnace. Compared to the air-fired furnace, the oxygen-fired furnace requires only 65% of the surface area and 45% of the volume. Two oxygen-fired designs were simulated: (1) with cryogenic air separation unit (ASU) and (2) with oxygen ion transport membrane (OITM). The maximum wall heat flux in the oxygen-fired furnace is more than double that of the air-fired furnace due to the higher flame temperature and higher H{sub 2}O and CO{sub 2} concentrations. The coal burnout for the oxygen-fired case is 100% due to a 500 F higher furnace temperature and higher concentration of O{sub 2}. Because of the higher furnace wall temperature of the oxygen-fired case compared to the air-fired case, furnace water wall material was upgraded from T2 to T92. Compared to the air-fired heat recovery area (HRA), the oxygen-fired HRA total heat transfer surface is 35% less for the cryogenic design and 13% less for the OITM design due to more heat being absorbed in the oxygen-fired furnace and the greater molecular weight of the oxygen-fired flue gas. The HRA tube materials and wall thickness are nearly the same for the air-fired and oxygen-fired design since the flue gas and water/steam temperature profiles encountered by the heat transfer banks are similar.

Andrew Seltzer

2006-05-01T23:59:59.000Z

116

Reference modeling for higher education budgeting: applying the H2 toolset for conceptual modeling of performance-based funding systems  

Science Conference Proceedings (OSTI)

The Higher Education (HE) sector has gained remarkable economic importance worldwide. There is a huge amount of institutions competing in this dynamically evolving market. Emerging concepts like new public management advise to organize HE institutions ... Keywords: H2, budgeting, higher education (HE), incentive system, indicator system, information model, performance-based funding, reference modeling

Jan vom Brocke; Christian Buddendick; Alexander Simons

2007-09-01T23:59:59.000Z

117

Numerical simulation of the conceptual model for mCCHP-stirling engine based on renewable energy sources  

Science Conference Proceedings (OSTI)

The constituent elements of the mCCHP system are mCHP-Stirling Engine as a base unit, auxiliary energy sources, storage units for ensuring load peaks, the system for cooling and accumulating cold water. For the elaboration of the conceptual device of ... Keywords: CHP, mCCHP, microcogeneration, residential building, trigeneration

Nicolae Badea; Emil Ceang?; Sergiu Caraman; Marian Barbu

2010-10-01T23:59:59.000Z

118

Enterprise modeling and analysis: an enterprise modeling and analysis toolkit  

Science Conference Proceedings (OSTI)

A fully integrated modeling and analysis toolkit, which facilitates multi-perspective knowledge capturing, sharing and reusing, is necessary for today's enterprises to meet the challenges of the ever more competitive global marketplace. In this paper ...

Dursun Delen; Perakath C. Benjamin

2000-12-01T23:59:59.000Z

119

Conceptual design analysis of an MHD power conversion system for droplet-vapor core reactors. Final report  

DOE Green Energy (OSTI)

A nuclear driven magnetohydrodynamic (MHD) generator system is proposed for the space nuclear applications of few hundreds of megawatts. The MHD generator is coupled to a vapor-droplet core reactor that delivers partially ionized fissioning plasma at temperatures in range of 3,000 to 4,000 K. A detailed MHD model is developed to analyze the basic electrodynamics phenomena and to perform the design analysis of the nuclear driven MHD generator. An incompressible quasi one dimensional model is also developed to perform parametric analyses.

Anghaie, S.; Saraph, G.

1995-12-31T23:59:59.000Z

120

Using the Conceptual Site Model to Remediate Two Sites in New England and Reach License Termination and Site Reuse  

SciTech Connect

The Conceptual Site Model (CSM) is a powerful tool for understanding the link between contamination sources, cleanup objectives, and ultimate site reuse. The CSM describes the site setting, geology, hydrogeology, potential sources, release mechanisms and migration pathways of contaminants. The CSM is needed to understand the extent of contamination and how receptors may be exposed to both radiological and chemical constituents. A key component of the CSM that is often overlooked concerns how the regulatory requirements drive remediation and how each has to be integrated into the CSM to ensure that all stakeholder requirements are understood and addressed. This paper describes how the use of the CSM helped reach closure and reuse at two facilities in Connecticut that are pursuing termination of their Nuclear Regulatory Commission (NRC) license. The two facilities are the Combustion Engineering Site, located in Windsor, Connecticut, (CE Windsor Site) and the Connecticut Yankee Atomic Power Company, located in Haddam Neck, Connecticut (CYAPCO). The closure of each of these facilities is regulated by four agencies: - Nuclear Regulatory Commission (NRC) - which requires cleanup levels for radionuclides to be protective of public health; - US Environmental Protection Agency (USEPA) - which requires cleanup levels for chemicals to be protective of public health and the environment; - Connecticut Department of Environmental Protection (CTDEP) Bureau of Air Management, Radiation Division - which requires cleanup levels for radionuclides to be protective of public health; and - Connecticut Department of Environmental Protection (CTDEP) Bureau of Water Protection and Land Reuse - which requires cleanup levels for chemicals to be protective of public health and the environment. Some of the radionuclides at the CE Windsor Site are also regulated under the Formerly Utilized Site Remedial Action Program (FUSRAP) under the Army Corps of Engineers. The remainder of this paper presents the similarities and differences between the CSMs for these two sites and how each site used the CSM to reach closure. Although each of these site have unique histories and physical features, the CSM approach was used to understand the geology, hydrogeology, migration and exposure pathways, and regulatory requirements to successfully characterize and plan closure of the sites. A summary of how these attributes affected site closure is provided.

Glucksberg, Nadia; Peters, Jay [MACTEC Engineering and Consulting, Inc., Portland, Maine, 04112 and Wakefield, Massachusetts, 01880 (United States)

2008-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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121

Ocean thermal energy conversion (OTEC) power system development. Conceptual design  

DOE Green Energy (OSTI)

The conceptual design of a power system for application to the OTEC 100-MWe Demonstration Plant is presented. System modeling, design, and performance are described in detail. Materials considerations, module assembly, and cost considerations are discussed. Appendices include: A) systems analysis, B) general arrangements, C) system equipment, D) ammonia system material considerations; E) ammonia cycle, F) auxiliary subsystems, G) DACS availability analysis, H) heat exchanger supporting data, I) rotating machinery, and J) platform influences. (WHK)

Not Available

1978-01-30T23:59:59.000Z

122

ParaText : scalable text modeling and analysis.  

Science Conference Proceedings (OSTI)

Automated processing, modeling, and analysis of unstructured text (news documents, web content, journal articles, etc.) is a key task in many data analysis and decision making applications. As data sizes grow, scalability is essential for deep analysis. In many cases, documents are modeled as term or feature vectors and latent semantic analysis (LSA) is used to model latent, or hidden, relationships between documents and terms appearing in those documents. LSA supplies conceptual organization and analysis of document collections by modeling high-dimension feature vectors in many fewer dimensions. While past work on the scalability of LSA modeling has focused on the SVD, the goal of our work is to investigate the use of distributed memory architectures for the entire text analysis process, from data ingestion to semantic modeling and analysis. ParaText is a set of software components for distributed processing, modeling, and analysis of unstructured text. The ParaText source code is available under a BSD license, as an integral part of the Titan toolkit. ParaText components are chained-together into data-parallel pipelines that are replicated across processes on distributed-memory architectures. Individual components can be replaced or rewired to explore different computational strategies and implement new functionality. ParaText functionality can be embedded in applications on any platform using the native C++ API, Python, or Java. The ParaText MPI Process provides a 'generic' text analysis pipeline in a command-line executable that can be used for many serial and parallel analysis tasks. ParaText can also be deployed as a web service accessible via a RESTful (HTTP) API. In the web service configuration, any client can access the functionality provided by ParaText using commodity protocols ... from standard web browsers to custom clients written in any language.

Dunlavy, Daniel M.; Stanton, Eric T.; Shead, Timothy M.

2010-06-01T23:59:59.000Z

123

Conceptual Proposal  

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

Monitoring-Based Commissioning: Benchmarking Analysis of 24 UC/CSU/IOU Projects Evan Mills, Ph.D Paul Mathew, Ph.D. Lawrence Berkeley National Laboratory Berkeley, California Report Prepared for: California Energy Commission Public Interest Energy Research (PIER) Technology Demonstration Program April 2009 Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process

124

Conceptual Safety Design RM  

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

The Conceptual Safety Design (CSD) Review Module (RM) is a tool that assists DOE federal project review teams in evaluating the adequacy of the Conceptual Safety Design work, processes and...

125

ROCK PROPERTIES MODEL ANALYSIS MODEL REPORT  

SciTech Connect

The purpose of this Analysis and Model Report (AMR) is to document Rock Properties Model (RPM) 3.1 with regard to input data, model methods, assumptions, uncertainties and limitations of model results, and qualification status of the model. The report also documents the differences between the current and previous versions and validation of the model. The rock properties models are intended principally for use as input to numerical physical-process modeling, such as of ground-water flow and/or radionuclide transport. The constraints, caveats, and limitations associated with this model are discussed in the appropriate text sections that follow. This work was conducted in accordance with the following planning documents: WA-0344, ''3-D Rock Properties Modeling for FY 1998'' (SNL 1997, WA-0358), ''3-D Rock Properties Modeling for FY 1999'' (SNL 1999), and the technical development plan, Rock Properties Model Version 3.1, (CRWMS M&O 1999c). The Interim Change Notice (ICNs), ICN 02 and ICN 03, of this AMR were prepared as part of activities being conducted under the Technical Work Plan, TWP-NBS-GS-000003, ''Technical Work Plan for the Integrated Site Model, Process Model Report, Revision 01'' (CRWMS M&O 2000b). The purpose of ICN 03 is to record changes in data input status due to data qualification and verification activities. These work plans describe the scope, objectives, tasks, methodology, and implementing procedures for model construction. The constraints, caveats, and limitations associated with this model are discussed in the appropriate text sections that follow. The work scope for this activity consists of the following: (1) Conversion of the input data (laboratory measured porosity data, x-ray diffraction mineralogy, petrophysical calculations of bound water, and petrophysical calculations of porosity) for each borehole into stratigraphic coordinates; (2) Re-sampling and merging of data sets; (3) Development of geostatistical simulations of porosity; (4) Generation of derivative property models via linear coregionalization with porosity; (5) Post-processing of the simulated models to impart desired secondary geologic attributes and to create summary and uncertainty models; and (6) Conversion of the models into real-world coordinates. The conversion to real world coordinates is performed as part of the integration of the RPM into the Integrated Site Model (ISM) 3.1; this activity is not part of the current analysis. The ISM provides a consistent volumetric portrayal of the rock layers, rock properties, and mineralogy of the Yucca Mountain site and consists of three components: (1) Geologic Framework Model (GFM); (2) RPM, which is the subject of this AMR; and (3) Mineralogic Model. The interrelationship of the three components of the ISM and their interface with downstream uses are illustrated in Figure 1. Figure 2 shows the geographic boundaries of the RPM and other component models of the ISM.

Clinton Lum

2002-02-04T23:59:59.000Z

126

Unsatisfiability reasoning in ORM conceptual schemes  

Science Conference Proceedings (OSTI)

ORM (Object-Role Modeling) is a rich and well-known conceptual modeling method. As ORM has a formal semantics, reasoning tasks such as satisfiability checking of an ORM schema naturally arise. Satisfiability checking allows a developer to automatically ...

Mustafa Jarrar; Stijn Heymans

2006-03-01T23:59:59.000Z

127

Energy Analysis Models, Tools and Software Technologies ...  

Energy Analysis Models, Tools and Software Technology Marketing Summaries Here you’ll find marketing summaries of energy analysis models, tools, and software ...

128

NREL: Energy Analysis - Models and Tools  

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

Most of these tools can be applied on a global, regional, local, or project basis. Energy Data for Decision Makers Crosscutting Analysis Models and Tools Technology Analysis Models...

129

Application analysis of solar total energy systems to the residential sector. Volume III, conceptual design. Final report  

DOE Green Energy (OSTI)

The objective of the work described in this volume was to conceptualize suitable designs for solar total energy systems for the following residential market segments: single-family detached homes, single-family attached units (townhouses), low-rise apartments, and high-rise apartments. Conceptual designs for the total energy systems are based on parabolic trough collectors in conjunction with a 100 kWe organic Rankine cycle heat engine or a flat-plate, water-cooled photovoltaic array. The ORC-based systems are designed to operate as either independent (stand alone) systems that burn fossil fuel for backup electricity or as systems that purchase electricity from a utility grid for electrical backup. The ORC designs are classified as (1) a high temperature system designed to operate at 600/sup 0/F and (2) a low temperature system designed to operate at 300/sup 0/F. The 600/sup 0/F ORC system that purchases grid electricity as backup utilizes the thermal tracking principle and the 300/sup 0/F ORC system tracks the combined thermal and electrical loads. Reject heat from the condenser supplies thermal energy for heating and cooling. All of the ORC systems utilize fossil fuel boilers to supply backup thermal energy to both the primary (electrical generating) cycle and the secondary (thermal) cycle. Space heating is supplied by a central hot water (hydronic) system and a central absorption chiller supplies the space cooling loads. A central hot water system supplies domestic hot water. The photovoltaic system uses a central electrical vapor compression air conditioning system for space cooling, with space heating and domestic hot water provided by reject heat from the water-cooled array. All of the systems incorporate low temperature thermal storage (based on water as the storage medium) and lead--acid battery storage for electricity; in addition, the 600/sup 0/F ORC system uses a therminol-rock high temperature storage for the primary cycle. (WHK)

Not Available

1979-07-01T23:59:59.000Z

130

INEEL Subregional Conceptual Model Report; Volume 1 - Summary of Existing Knowledge of Natural and Anthropogenic Influences Governing Subsurface Contaminant Transport in the INEEL Subregion of the Eastern Snake River Plain  

Science Conference Proceedings (OSTI)

The National Research Council has defined a conceptual model as ''an evolving hypothesis identifying the important features, processes, and events controlling fluid flow and contaminant transport of consequence at a specific field site in the context of a recognized problem''. Presently, several subregional conceptual models are under development at the Idaho National Engineering and Environmental Laboratory (INEEL). Additionally, facility-specific conceptual models have been described as part of INEEL environmental restoration activities. Compilation of these models is required to develop a comprehensive conceptual model that can be used to strategically plan for future groundwater research activities at the INEEL. Conceptual models of groundwater flow and contaminant transport at the INEEL include the description of the geologic framework, matrix hydraulic properties, and inflows and outflows. They also include definitions of the contaminant source term and contaminant transport mechanisms. The geologic framework of the INEEL subregion is described by the geometry of the system, stratigraphic units within the system, and structural features that affect groundwater flow and contaminant transport. These elements define geohydrologic units that make up the Snake River Plain Aquifer (SRPA). The United States Geological Survey (USGS) conceptual model encompasses approximately 1,920 mi2 of the eastern Snake River Plain. The Waste Area Group (WAG)-10 model includes the USGS area and additional areas to the northeast and southeast. Both conceptual models are bounded to the northwest by the Pioneer Mountains, Lost River Range, and Lemhi Mountains. They are bounded to the southeast by groundwater flow paths determined from aquifer water-level contours. The upgradient extent of the USGS model is a water-level contour that includes the northeastern boundary of the INEEL. The WAG-10 model includes more of the Mud Lake area to utilize previous estimates of underflow into the subregion. Both conceptual models extend approximately 25 miles to the southwest of the INEEL, a distance sufficient to include known concentrations of contaminant tracers. Several hypotheses have been developed concerning the effective thickness of the SRPA at the INEEL. The USGS model has defined the effective thickness from electrical resistivity and borehole data to be as much as 2,500 ft in the eastern part of the subregion and as much as 4,000 ft in the southwestern part. The WAG-10 model has developed two alternatives using aquifer-temperature and electrical resistivity data. The ''thick'' aquifer interpretation utilizes colder temperature data and includes a northtrending zone in which the thickness exceeds 1,300 ft and with a maximum thickness of 1,700 ft. The ''thin'' aquifer interpretation minimizes aquifer thickness, with thickness ranging from 328 to 1,300 ft. Facility-specific models generally have focused efforts on the upper 250 ft of saturation. Conceptual models have utilized a stratigraphic data set to define geohydrologic units within the INEEL subregion. This data set, compiled from geophysical logs and cores from boreholes, correlates the thick, complex stack of basalt flows across the subregion. Conceptual models generally concur that the upper geohydrologic unit consists of a section of highly fractured, multiple, thin basalt flows and sedimentary interbeds. Beneath this unit is an areally extensive, thick, unfractured basalt flow that rises above the water table southwest of the INEEL. The bottom unit consists of a thick section of slightly- to moderately-altered basalt. A key objective of the DOE water-integration project at the INEEL is to coordinate development of a subregional conceptual model of groundwater flow and contaminant transport that is based on the best available understanding of geologic and hydrologic features. The first step in this process is to compile and summarize the current conceptual models of groundwater flow and contaminant transport at the INEEL that have been developed from extensive geohydrologic studies con

Wichlacz, Paul Louis; Orr, Brennan

2002-08-01T23:59:59.000Z

131

Partially autonomous conceptual development of multifunctional structures  

Science Conference Proceedings (OSTI)

Partially autonomous conceptual development of Multifunctional Structures (MFSs) is achieved using an analogy with two mechanisms found in embryo development in biology: induction and gene transcription. The induction model is achieved autonomously ...

Yuemin Hou; Linhong Ji

2011-02-01T23:59:59.000Z

132

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

133

Conceptual Models for Migration of Key Groundwater Contaminants Through the Vadose Zone and Into the Upper Unconfined Aquifer Below the B-Complex  

Science Conference Proceedings (OSTI)

The B-Complex contains 3 major crib and trench disposal sites and 3 SST farms that have released nearly 346 mega-liters of waste liquids containing the following high groundwater risk drivers: ~14,000 kg of CN, 29,000 kg of Cr, 12,000 kg of U and 145 Ci of Tc-99. After a thorough review of available vadose zone sediment and pore water, groundwater plume, field gamma logging, field electrical resistivity studies, we developed conceptual models for which facilities have been the significant sources of the contaminants in the groundwater and estimated the masses of these contaminants remaining in the vadose zone and currently present in the groundwater in comparison to the totals released. This allowed us to make mass balance calculations on how consistent our knowledge is on the current deep vadose zone and groundwater distribution of contaminants. Strengths and weaknesses of the conceptual models are discussed as well as implications on future groundwater and deep vadose zone remediation alternatives. Our hypothesized conceptual models attribute the source of all of the cyanide and most of the Tc-99 currently in the groundwater to the BY cribs. The source of the uranium is the BX-102 tank overfill event and the source of most of the chromium is the B-7-A&B and B-8 cribs. Our mass balance estimates suggest that there are much larger masses of U, CN, and Tc remaining in the deep vadose zone within ~20 ft of the water table than is currently in the groundwater plumes below the B-Complex. This hypothesis needs to be carefully considered before future remediation efforts are chosen. The masses of these groundwater risk drivers in the the groundwater plumes have been increasing over the last decade and the groundwater plumes are migrating to the northwest towards the Gable Gap. The groundwater flow rate appears to flucuate in response to seasonal changes in hydraulic gradient. The flux of contaminants out of the deep vadose zone from the three proposed sources also appears to be transient such that the evolution of the contaminant plumes is transient.

Serne, R. Jeffrey; Bjornstad, Bruce N.; Keller, Jason M.; Thorne, Paul D.; Lanigan, David C.; Christensen, J. N.; Thomas, Gregory S.

2010-07-01T23:59:59.000Z

134

Vehicle Technologies Office: Modeling, Testing and Analysis  

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

Modeling, Testing and Modeling, Testing and Analysis to someone by E-mail Share Vehicle Technologies Office: Modeling, Testing and Analysis on Facebook Tweet about Vehicle Technologies Office: Modeling, Testing and Analysis on Twitter Bookmark Vehicle Technologies Office: Modeling, Testing and Analysis on Google Bookmark Vehicle Technologies Office: Modeling, Testing and Analysis on Delicious Rank Vehicle Technologies Office: Modeling, Testing and Analysis on Digg Find More places to share Vehicle Technologies Office: Modeling, Testing and Analysis on AddThis.com... Goals Research & Development Testing and Analysis Workplace Charging Community and Fleet Readiness Workforce Development Plug-in Electric Vehicle Basics Modeling, Testing and Analysis The Vehicle Technologies Office's robust portfolio is supported by

135

Appendix A: Conceptual Documents  

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

NREL-Research Support Facilities TABLE OF CONTENTS NREL-Research Support Facilities TABLE OF CONTENTS Solicitation No. RFJ-8-77550 Appendix A: Conceptual Documents Page 1 of 299 February 6, 2008 Appendix A CONCEPTUAL DOCUMENTS TABLE OF CONTENTS INTRODUCTION ...................................................................................................................... 2 PART 1-PROCEDURES .......................................................................................................... 3 PART 2-PROGRAM ............................................................................................................... 59 PART 3-PERFORMANCE SPECIFICATIONS .................................................................... 245 APPENDIX LIST .................................................................................................................. 299

136

Fundamental analysis and conceptual model for corporate strategy in global engineering and construction markets  

E-Print Network (OSTI)

Strategic management as an academic field of study has spanned over four decades. As an interdisciplinary subject that enjoys concurrent contributions by allied disciplines such as economics and social science, numerous ...

Cheah, Yuen Jen, 1972-

2002-01-01T23:59:59.000Z

137

NREL: Energy Analysis - Market Analysis Models and Tools  

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

Energy Analysis Search More Search Options Site Map Printable Version Market Analysis Models and Tools The following is a list of models and tools that are used for market...

138

WIPP - Passive Institutional Controls (PICs) Technical and Conceptual...  

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

Basis Materials Analysis - evaluation of permanent marker conceptual design elements Monument Survey - examination of regional stone and ancient petroglyphs Ancient Cementitious...

139

TANK48 CFD MODELING ANALYSIS  

SciTech Connect

The process of recovering the waste in storage tanks at the Savannah River Site (SRS) typically requires mixing the contents of the tank to ensure uniformity of the discharge stream. Mixing is accomplished with one to four dual-nozzle slurry pumps located within the tank liquid. For the work, a Tank 48 simulation model with a maximum of four slurry pumps in operation has been developed to estimate flow patterns for efficient solid mixing. The modeling calculations were performed by using two modeling approaches. One approach is a single-phase Computational Fluid Dynamics (CFD) model to evaluate the flow patterns and qualitative mixing behaviors for a range of different modeling conditions since the model was previously benchmarked against the test results. The other is a two-phase CFD model to estimate solid concentrations in a quantitative way by solving the Eulerian governing equations for the continuous fluid and discrete solid phases over the entire fluid domain of Tank 48. The two-phase results should be considered as the preliminary scoping calculations since the model was not validated against the test results yet. A series of sensitivity calculations for different numbers of pumps and operating conditions has been performed to provide operational guidance for solids suspension and mixing in the tank. In the analysis, the pump was assumed to be stationary. Major solid obstructions including the pump housing, the pump columns, and the 82 inch central support column were included. The steady state and three-dimensional analyses with a two-equation turbulence model were performed with FLUENT{trademark} for the single-phase approach and CFX for the two-phase approach. Recommended operational guidance was developed assuming that local fluid velocity can be used as a measure of sludge suspension and spatial mixing under single-phase tank model. For quantitative analysis, a two-phase fluid-solid model was developed for the same modeling conditions as the single-phase model. The modeling results show that the flow patterns driven by four pump operation satisfy the solid suspension requirement, and the average solid concentration at the plane of the transfer pump inlet is about 12% higher than the tank average concentrations for the 70 inch tank level and about the same as the tank average value for the 29 inch liquid level. When one of the four pumps is not operated, the flow patterns are satisfied with the minimum suspension velocity criterion. However, the solid concentration near the tank bottom is increased by about 30%, although the average solid concentrations near the transfer pump inlet have about the same value as the four-pump baseline results. The flow pattern results show that although the two-pump case satisfies the minimum velocity requirement to suspend the sludge particles, it provides the marginal mixing results for the heavier or larger insoluble materials such as MST and KTPB particles. The results demonstrated that when more than one jet are aiming at the same position of the mixing tank domain, inefficient flow patterns are provided due to the highly localized momentum dissipation, resulting in inactive suspension zone. Thus, after completion of the indexed solids suspension, pump rotations are recommended to avoid producing the nonuniform flow patterns. It is noted that when tank liquid level is reduced from the highest level of 70 inches to the minimum level of 29 inches for a given number of operating pumps, the solid mixing efficiency becomes better since the ratio of the pump power to the mixing volume becomes larger. These results are consistent with the literature results.

Lee, S.

2011-05-17T23:59:59.000Z

140

NREL: Energy Analysis - Models and Tools  

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

infrastructure analysis model. Biomass Scenario Model (BSM) Determine which supply chain changes would have the greatest potential to accelerate the deployment of biofuels....

Note: This page contains sample records for the topic "analysis conceptual model" 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

Energy Analysis Models, Tools and Software Technologies ...  

Energy Analysis Models, Tools and Software Technologies Available for Licensing U.S. Department of Energy laboratories and participating research ...

142

Why Do They Stay? Building a Conceptual Model to Understand Worker Retention and Turnover in Public Child Welfare  

E-Print Network (OSTI)

the qualitative analysis, alternative job opportunities isJob satisfaction, organizational commitment, turnover intention, and turnover: Path analysesmeta analyses of studies examining the job satisfaction-

Benton, Amy Denise

2010-01-01T23:59:59.000Z

143

A system for rapid creation and assessment of conceptual large vehicle designs using immersive virtual reality  

Science Conference Proceedings (OSTI)

Currently, new product concepts are often evaluated by developing detailed virtual part and assembly models with traditional computer aided design (CAD) tools followed by appropriate analyses (e.g., finite element analysis, computational fluid dynamics, ... Keywords: Conceptual design, Product configuration, Virtual reality

Christian Noon; Ruqin Zhang; Eliot Winer; James Oliver; Brian Gilmore; Jerry Duncan

2012-06-01T23:59:59.000Z

144

Conceptual Design RM  

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

This Review Module is a tool that assists Department of Energy (DOE) federal project review teams in evaluating the adequacy of the conceptual design package prior to CD-1 approval. It focuses on...

145

A Conceptual Model for the Influence of TUTT Cells on Tropical Cyclone Motion in the Northwest Pacific Ocean  

Science Conference Proceedings (OSTI)

Eleven (10 Pacific, 1 Atlantic) tropical cyclones (TCs), which include typhoons/hurricanes and tropical storms, are examined using the latest 40-yr ECMWF Re-Analysis (ERA-40) dataset and Joint Typhoon Warning Center (JTWC) best-track data to ...

Jason E. Patla; Duane Stevens; Gary M. Barnes

2009-10-01T23:59:59.000Z

146

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

147

CLEERS Aftertreatment Modeling and Analysis  

Science Conference Proceedings (OSTI)

DOE FY 2011 Advanced Combustion Technologies Annual Report. CLEERS is a research and development focus project of the Diesel Cross-Cut Team. The overall objective is to promote the development of improved computational tools for simulating realistic full-system performance of lean-burn engines and the associated emissions control systems. Three fundamental research projects are sponsored at PNNL through CLEERS: DPF, SCR, and LNT. Resources are shared between the three efforts in order to actively respond to current industrial needs. In FY 2011, more emphasis was placed on the SCR and LNT activities because of urgent application issues associated with these technologies. Objectives of this project are to lead and contribute to the Cross-Cut Lean Exhaust Emissions Reduction Simulations (CLEERS) activities - (a) Provide project updates to the industry sub-team, solicit feedback, and adjust work scope accordingly; and (b) Lead technical discussions, invite distinguished speakers, and maintain an open dialogue on selective catalytic reduction (SCR), lean-NOx trap (LNT), and diesel particulate filter (DPF) modeling issues. Fiscal Year (FY) 2011 Objectives are to: (1) Develop improved modeling capabilities for SCR and DPFs through fundamental experiments; and (2) Develop a fundamental understanding of SCR and LNT catalysts with primary focus on reaction mechanisms and material characterization. Some accomplishments are: (1) Participated in monthly CLEERS teleconferences and coordinated the calls focused on SCR, LNT and DPF technologies; (2) Updated PNNL's SCR model for the state-of-the-art commercial Cu-zeolite SCR catalyst to extract kinetic parameters and to quantitatively describe the effects of hydrothermal aging; (3) Examined the effects of hydrothermal aging on the physicochemical properties and SCR reactions using the commercial Cu catalyst in collaboration with Oak Ridge National Laboratory (ORNL); (4) Investigated the nature of Cu species and obtained kinetic parameters for small-pore zeolite-based Cu SCR catalyst. (5) Examined the effects of support materials for Ba-based LNT catalysts, and found magnesium aluminate may improve the oxides of nitrogen (NO{sub x}) reduction performance at high temperatures; (6) Investigated soot oxidation mechanisms for relevant oxidants (O{sub 2}, NO{sub 2}) through reactor experiments and transmission electron spectroscopy (TEM) analysis; (7) Seven publications and 21 public presentations (eight invited) during the past FY; and (8) Co-organized sessions on emission control and modeling for the SAE World Congress and the American Society of Mechanical Engineers Internal Combustion Engine Conference.

Devarakonda, Maruthi N.; Herling, Darrell R.; Kim, Do Heui; Kwak, Ja Hun; Peden, Charles HF; Stewart, Mark L.; Strzelec, Andrea; Szanyi, Janos; Tran, Diana N.; Lee, Jong H.

2012-02-08T23:59:59.000Z

148

Estimation of hydraulic properties and development of a layered conceptual model for the Snake River plain aquifer at the Idaho National Engineering Laboratory, Idaho  

SciTech Connect

The Idaho INEL Oversight Program, in association with the University of Idaho, Idaho Geological Survey, Boise State University, and Idaho State University, developed a research program to determine the hydraulic properties of the Snake River Plain aquifer and characterize the vertical distribution of contaminants. A straddle-packer was deployed in four observation wells near the Idaho Chemical Processing Plant at the Idaho National Engineering Laboratory. Pressure transducers mounted in the straddle-packer assembly were used to monitor the response of the Snake River Plain aquifer to pumping at the ICPP production wells, located 2600 to 4200 feet from the observation wells. The time-drawdown data from these tests were used to evaluate various conceptual models of the aquifer. Aquifer properties were estimated by matching time-drawdown data to type curves for partially penetrating wells in an unconfined aquifer. This approach assumes a homogeneous and isotropic aquifer. The hydraulic properties of the aquifer obtained from the type curve analyses were: (1) Storativity = 3 x 10{sup -5}, (2) Specific Yield = 0.01, (3) Transmissivity = 740 ft{sup 2}/min, (4) Anisotropy (Kv:Kh)= 1:360.

Frederick, D.B.; Johnson, G.S.

1996-02-01T23:59:59.000Z

149

U.S. National Committee for Rock Mechanics; and Conceptual model of fluid infiltration in fractured media. Project summary, July 28, 1997--July 27, 1998  

SciTech Connect

The title describes the two tasks summarized in this report. The remainder of the report contains information on meetings held or to be held on the subjects. The US National Committee for Rock Mechanics (USNC/RM) provides for US participation in international activities in rock mechanics, principally through adherence to the International Society for Rock Mechanics (ISRM). It also keeps the US rock mechanics community informed about new programs directed toward major areas of national concern in which rock mechanics problems represent critical or limiting factors, such as energy resources, excavation, underground storage and waste disposal, and reactor siting. The committee also guides or produces advisory studies and reports on problem areas in rock mechanics. A new panel under the auspices of the US National Committee for Rock Mechanics has been appointed to conduct a study on Conceptual Models of Fluid Infiltration in Fractured Media. The study has health and environmental applications related to the underground flow of pollutants through fractured rock in and around mines and waste repositories. Support of the study has been received from the US Nuclear Regulatory Commission and the Department of Energy`s Yucca Mountain Project Office. The new study builds on the success of a recent USNC/RM report entitled Rock Fractures and Fluid Flow: Contemporary Understanding and Applications (National Academy Press, 1996, 551 pp.). A summary of the new study is provided.

1998-09-01T23:59:59.000Z

150

A conceptual model and preliminary estimate of potential tritium migration from the Benham (U-20c) site, Pahute Mesa, Nevada Test Site  

Science Conference Proceedings (OSTI)

U-20c is the site of a large below-water-table nuclear test near the Nevada Test Site boundary. A conceptual model of potential groundwater migration of tritium from U-20c is constructed and quantitatively evaluated in this report. The lower portion of the collapse chimney at Benham is expected to intersect 200 m of permeable rhyolite lava, overlain by similar thicknesses of low-permeability zeolitized bedded tuff, then permeable welded tuff. Vertical groundwater flow through the chimney is predicted to be minimal, horizontal transport should be controlled by the regional groundwater flow. Analytic solutions treating only advective transport indicate 1 to 2 km of tritium movement (95% confidence interval 0.7--2.5 km) within 5 years after test-related pressure-temperature transients have dissipated. This point lies at the axis of a potentiometric surface trough along the west edge of Area 20, Nevada Test Site. Within 25 years, movement is predicted to extend to 3 km (95% confidence interval 2--5 km) approximately to the intersection of the trough and the Nevada Test Site boundary. Considering the effects of radioactive decay, but not dispersion, plume concentration would fall below Safe Drinking Water Act standards by 204 years, at a predicted distance of 11 km (95% confidence interval 7--31 km). This point is located in the eastern portion of the Timber Mountain Caldera moat within the Nellis Air Force Range (military bombing range).

Brikowski, T.; Mahin, G. [Nevada Univ., Reno, NV (United States). Water Resources Center

1993-08-01T23:59:59.000Z

151

Transportation Analysis, Modeling, and Simulation (TAMS) Application  

E-Print Network (OSTI)

Transportation Analysis, Modeling, and Simulation (TAMS) Application Center for Transportation Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies T he Center for Transportation Analysis (CTA) TAMS application is a web-based tool that supports

152

Energy Analysis Models, Tools and Software Technologies ...  

Energy Analysis Models, Tools and Software Technologies Available for Licensing U.S. Department of Energy laboratories and participating research institutions have ...

153

Energy Infrastructure Modeling and Analysis (EIMA)  

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

The Energy Infrastructure Modeling and Analysis (EIMA) Division is focused on ensuring the reliability and resiliency of the U.S. electric grid through robust analytical, modeling, and assessment...

154

DOE Hydrogen Analysis Repository: Hydrogen Modeling Projects  

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

Modeling Projects Modeling Projects Below are models grouped by topic. These models are used to analyze hydrogen technology, infrastructure, and other areas related to the development and use of hydrogen. Cross-Cutting Distributed Energy Resources Customer Adoption Model (DER_CAM) Hydrogen Deployment System (HyDS) Model and Analysis Hydrogen Technology Assessment and Selection Model (HyTASM) Renewable Energy Power System Modular Simulator (RPM-Sim) Stranded Biogas Decision Tool for Fuel Cell Co-Production Energy Infrastructure All Modular Industry Growth Assessment (AMIGA) Model Building Energy Optimization (BEopt) Distributed Energy Resources Customer Adoption Model (DER_CAM) Hydrogen Deployment System (HyDS) Model and Analysis Hydrogen Technology Assessment and Selection Model (HyTASM)

155

Security Analysis and Improvement Model for Web-based Applications  

E-Print Network (OSTI)

Today the web has become a major conduit for information. As the World Wide Web?s popularity continues to increase, information security on the web has become an increasing concern. Web information security is related to availability, confidentiality, and data integrity. According to the reports from http://www.securityfocus.com in May 2006, operating systems account for 9% vulnerability, web-based software systems account for 61% vulnerability, and other applications account for 30% vulnerability. In this dissertation, I present a security analysis model using the Markov Process Model. Risk analysis is conducted using fuzzy logic method and information entropy theory. In a web-based application system, security risk is most related to the current states in software systems and hardware systems, and independent of web application system states in the past. Therefore, the web-based applications can be approximately modeled by the Markov Process Model. The web-based applications can be conceptually expressed in the discrete states of (web_client_good; web_server_good, web_server_vulnerable, web_server_attacked, web_server_security_failed; database_server_good, database_server_vulnerable, database_server_attacked, database_server_security_failed) as state space in the Markov Chain. The vulnerable behavior and system response in the web-based applications are analyzed in this dissertation. The analyses focus on functional availability-related aspects: the probability of reaching a particular security failed state and the mean time to the security failure of a system. Vulnerability risk index is classified in three levels as an indicator of the level of security (low level, high level, and failed level). An illustrative application example is provided. As the second objective of this dissertation, I propose a security improvement model for the web-based applications using the GeoIP services in the formal methods. In the security improvement model, web access is authenticated in role-based access control using user logins, remote IP addresses, and physical locations as subject credentials to combine with the requested objects and privilege modes. Access control algorithms are developed for subjects, objects, and access privileges. A secure implementation architecture is presented. In summary, the dissertation has developed security analysis and improvement model for the web-based application. Future work will address Markov Process Model validation when security data collection becomes easy. Security improvement model will be evaluated in performance aspect.

Wang, Yong

2008-12-01T23:59:59.000Z

156

Bifurcation Analysis of Various Power System Models  

E-Print Network (OSTI)

Bifurcation Analysis of Various Power System Models William D. Rosehart Claudio A. Ca This paper presents the bifurcation analysis of a detailed power system model composed of an aggregated induction motor and impedance load supplied by an under-load tap-changer transformer and an equivalent

Cañizares, Claudio A.

157

A Conceptual Framework for Progressing Towards Sustainability in the  

Open Energy Info (EERE)

A Conceptual Framework for Progressing Towards Sustainability in the A Conceptual Framework for Progressing Towards Sustainability in the Agriculture and Food Sector Jump to: navigation, search Tool Summary LAUNCH TOOL Name: A Conceptual Framework for Progressing Towards Sustainability in the Agriculture and Food Sector Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Land Focus Area: Agriculture Topics: Policies/deployment programs, Pathways analysis Resource Type: Publications Website: www.fao.org/docrep/012/al322e/al322e00.pdf A Conceptual Framework for Progressing Towards Sustainability in the Agriculture and Food Sector Screenshot References: A Conceptual Framework for Progressing Towards Sustainability in the Agriculture and Food Sector[1] Logo: A Conceptual Framework for Progressing Towards Sustainability in the Agriculture and Food Sector

158

SQLSAM: SQL for statistical analysis and modeling  

Science Conference Proceedings (OSTI)

Statistical modeling and analysis is extensively used in businesses for various purposes including graphic visualization of data, measurement of central tendencies and other statistics, and inferences on populations based on samples. Data is the fundamental ... Keywords: SQL, SQLSAM, business, business data processing, business decision making, continuous probability distributions, data visualisation, decision support systems, discrete probability distributions, graphic visualization, inferences, inferential statistics, organization databases, probability, query languages, regression analysis, standard database language, statistical analysis, statistical databases, statistical modeling, statistics

J. Choobineh; A. Kini

1995-01-01T23:59:59.000Z

159

Conceptual Modeling for Data Integration  

Science Conference Proceedings (OSTI)

The goal of data integration is to provide a uniform access to a set of heterogeneous data sources, freeing the user from the knowledge about where the data are, how they are stored, and how they can be accessed. One of the outcomes of the research work ...

Diego Calvanese; Giuseppe Giacomo; Domenico Lembo; Maurizio Lenzerini; Riccardo Rosati

2009-07-01T23:59:59.000Z

160

Rapid Risk-Based Evaluation of Competing Conceptual Designs  

SciTech Connect

In this paper, the authors have shown how a qualitative analysis can provide good input to a risk reduction design problem. Traditionally qualitative analyses such as the FMEA can be supplemented by qualitative fault trees and event trees to produce logic models of the accident sequences for the different design options. These models can be compared using rule-based manipulations of qualitative branch point probabilities. A qualitative evaluation of other considerations such as collateral safety effects, operational impacts and worker-safety impacts can provide a more complete picture of the trade-off between options. The authors believe that their risk-reduction analysis approach that combines logic models with qualitative and possibility metrics provides an excellent tool for incorporating safety concerns rapidly and effectively into a conceptual design evaluation.

Bott, T.F.; Butner, J.M.

1999-08-22T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Conceptual Safety Design RM  

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

Conceptual Safety Design Review Module Conceptual Safety Design Review Module March 2010 CD-0 O 0 OFFICE OF C C CD-1 F ENVIRO Standard R Conceptua Rev Critical Decis CD-2 M ONMENTAL Review Plan al Safety view Module sion (CD) Ap CD March 2010 L MANAGE n (SRP) y Design e pplicability D-3 EMENT CD-4 Post Ope eration Standard Review Plan, 2 nd Edition, March 2010 i FOREWORD The Standard Review Plan (SRP) 1 provides a consistent, predictable corporate review framework to ensure that issues and risks that could challenge the success of Office of Environmental Management (EM) projects are identified early and addressed proactively. The internal EM project review process encompasses key milestones established by DOE O 413.3A, Change 1, Program and Project Management for the Acquisition of Capital

162

Conceptual Design RM  

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

Conceptual Design Review Module Conceptual Design Review Module March 2010 CD-0 O 0 OFFICE OF C CD-1 F ENVIRO Standard R Concep Rev Critical Decis CD-2 M ONMENTAL Review Plan ptual De view Module sion (CD) Ap CD March 2010 L MANAGE n (SRP) sign e pplicability D-3 EMENT CD-4 Post Ope eration Standard Review Plan, 2 nd Edition, March 2010 i FOREWORD The Standard Review Plan (SRP) 1 provides a consistent, predictable corporate review framework to ensure that issues and risks that could challenge the success of Office of Environmental Management (EM) projects are identified early and addressed proactively. The internal EM project review process encompasses key milestones established by DOE O 413.3A, Change 1, Program and Project Management for the Acquisition of Capital Assets, DOE-STD-1189-2008,

163

Modeling and Analysis Session: Market, Value, and Policy Analysis (Presentation)  

DOE Green Energy (OSTI)

The Primary objectives: to provide a broad range of analytical support to the Solar Program; and to anticipate and respond to the rapidly evolving analytical needs of the Solar Program. Three broad types of analysis are being carried out under this project including: (1) Market analysis: Developing a PV market penetration model--the SolarDS model--and other tools, in order to gain insight into the factors influencing market penetration of PV technology in U.S. markets. (2) Value analysis: Providing inputs to, support for, and review of the annual GPRA benefits analysis. Also developing methods and tools for improving the quantification of the benefits and cost of solar technologies. (3) Policy analysis: Defining and carrying out analysis that meets the needs of the Solar Energy Technologies Program in a timely fashion, for example evaluating the potential role of solar in the energy economy in the long-term.

Margolis, R. M.

2008-04-01T23:59:59.000Z

164

DOE Hydrogen Analysis Repository: Hydrogen Transition Model ...  

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

Report ArticleAbstract Title: VII.11 Development of HyTrans Model and Integrated Scenario Analysis Page number(s): 1307 Publisher: U.S. Department of Energy Author...

165

DOE Hydrogen Analysis Repository: GREET Model  

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

GREET Model GREET Model Project Summary Full Title: Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) Model Project ID: 84 Principal Investigator: Michael Wang Keywords: Well-to-wheels (WTW); emissions; greenhouse gases (GHG); fuel cell vehicles (FCV) Purpose GREET supports Milestone 24 of the Systems Analysis activity of the DOE Hydrogen Program: Complete baseline economic, energy efficiency, and environmental targets for fossil, nuclear and renewable hydrogen production and delivery technologies. GREET also supports the 3rd objective listed in the DOE Hydrogen Program's Systems Analysis Plan: Well-to-Wheels Analysis: Conduct on-going, integrated well-to-wheels analysis of hydrogen pathways for introducing hydrogen as a transportation fuel. The analysis

166

Vehicle Technologies Office: Modeling, Testing and Analysis  

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

Modeling, Testing and Analysis Modeling, Testing and Analysis The Vehicle Technologies Office's robust portfolio is supported by modeling, testing, and analysis. This work complements the research on batteries, power electronics, and materials, helping researchers integrate these components and ensure the whole vehicle meets consumer and commercial needs. Modeling allows researchers to build "virtual vehicles" that simulate fuel economy, emissions and performance of a potential vehicle. The Office has supported the development of several software-based analytic tools that researchers can use or license. Integration and Validation allows researchers to test physical component and subsystem prototypes as if they are in a real vehicle. Laboratory and Fleet Testing provides data on PEVs through both dynamometer and on-the-road testing. Researchers use the data to benchmark current vehicles, as well as validate the accuracy of software models.

167

Combustion instability modeling and analysis  

DOE Green Energy (OSTI)

It is well known that the two key elements for achieving low emissions and high performance in a gas turbine combustor are to simultaneously establish (1) a lean combustion zone for maintaining low NO{sub x} emissions and (2) rapid mixing for good ignition and flame stability. However, these requirements, when coupled with the short combustor lengths used to limit the residence time for NO formation typical of advanced gas turbine combustors, can lead to problems regarding unburned hydrocarbons (UHC) and carbon monoxide (CO) emissions, as well as the occurrence of combustion instabilities. The concurrent development of suitable analytical and numerical models that are validated with experimental studies is important for achieving this objective. A major benefit of the present research will be to provide for the first time an experimentally verified model of emissions and performance of gas turbine combustors. The present study represents a coordinated effort between industry, government and academia to investigate gas turbine combustion dynamics. Specific study areas include development of advanced diagnostics, definition of controlling phenomena, advancement of analytical and numerical modeling capabilities, and assessment of the current status of our ability to apply these tools to practical gas turbine combustors. The present work involves four tasks which address, respectively, (1) the development of a fiber-optic probe for fuel-air ratio measurements, (2) the study of combustion instability using laser-based diagnostics in a high pressure, high temperature flow reactor, (3) the development of analytical and numerical modeling capabilities for describing combustion instability which will be validated against experimental data, and (4) the preparation of a literature survey and establishment of a data base on practical experience with combustion instability.

Santoro, R.J.; Yang, V.; Santavicca, D.A. [Pennsylvania State Univ., University Park, PA (United States); Sheppard, E.J. [Tuskeggee Univ., Tuskegee, AL (United States). Dept. of Aerospace Engineering

1995-12-31T23:59:59.000Z

168

Scripted Building Energy Modeling and Analysis (Presentation)  

SciTech Connect

Building energy analysis is often time-intensive, error-prone, and non-reproducible. Entire energy analyses can be scripted end-to-end using the OpenStudio Ruby API. Common tasks within an analysis can be automated using OpenStudio Measures. Graphical user interfaces (GUI's) and component libraries reduce time, decrease errors, and improve repeatability in energy modeling.

Macumber, D.

2012-10-01T23:59:59.000Z

169

Arabic texts analysis for topic modeling evaluation  

Science Conference Proceedings (OSTI)

Significant progress has been made in information retrieval covering text semantic indexing and multilingual analysis. However, developments in Arabic information retrieval did not follow the extraordinary growth of Arabic usage in the Web during the ... Keywords: Arabic stemming, Classification, Linguistic analysis, Test collections, Topic model

Abderrezak Brahmi; Ahmed Ech-Cherif; Abdelkader Benyettou

2012-02-01T23:59:59.000Z

170

Speech Under Stress: Analysis, Modeling and Recognition  

Science Conference Proceedings (OSTI)

In this chapter, we consider a range of issues associated with analysis, modeling, and recognition of speech under stress. We start by defining stress, what could be perceived as stress, and how it affects the speech production system. In the discussion ... Keywords: Lombard effect, Teager energy operator, hidden Markov models, pitch contours, robustness in speech recognition, speech technology, stress classification

John H. Hansen; Sanjay Patil

2007-02-01T23:59:59.000Z

171

Automated analysis of security-design models  

Science Conference Proceedings (OSTI)

We have previously proposed SecureUML, an expressive UML-based language for constructing security-design models, which are models that combine design specifications for distributed systems with specifications of their security policies. Here, we show ... Keywords: Formal analysis, Metamodels, OCL, SecureUML, Security policies, UML

David Basin; Manuel Clavel; Jürgen Doser; Marina Egea

2009-05-01T23:59:59.000Z

172

Modeling window optics for building energy analysis  

SciTech Connect

This report discusses modeling the optics of windows for the purposes of simulating building energy requirements or daylighting availability. The theory for calculating the optical performance of conventional windows is reviewed. The simplifications that might commonly be made in creating computational models are analyzed. Some of the possibilities for more complex windows are analyzed, and the type of model and data that would be necessary to simulate such windows in a building energy analysis program are determined. It is shown that the optical performance of different window types can be simulated with models which require varying amounts of memory or computing time. It is recommended that a building energy analysis program have all models available and use the most efficient for any given window.

Walton, G.N.

1986-07-01T23:59:59.000Z

173

Comparison of a NuScale SMR conceptual core design using CASMO5/simulate5 and MCNP5  

Science Conference Proceedings (OSTI)

A key issue during the initial start-ups of new Small Modular Reactors (SMRs) is the lack of operational data for reactor model validation. To help better understand the accuracy of the reactor analysis codes CASMO5 and SIMULATE5, higher order comparisons to MCNP5 have been performed. These comparisons are for an initial core conceptual design of the NuScale reactor. The data have been evaluated at Hot Zero Power (HZP) conditions. Comparisons of core reactivity, fuel temperature coefficient (FTC), and moderator temperature coefficients (MTC) have been performed. Comparison results show good agreement between CASMO5/SIMULATE5 and MCNP5 for the conceptual initial core design. (authors)

Haugh, B. [Studsvik Scandpower Inc., 1015 Ashes Drive, Wilmington, NC 28405 (United States); Mohamed, A. [NuScale Power Inc., 1100 NE Circle Blvd, Corvallis, OR 97330 (United States)

2012-07-01T23:59:59.000Z

174

Energy Analysis Models, Tools and Software Technologies - Energy ...  

Energy Analysis Models, Tools and Software Technology Marketing Summaries Here you’ll find marketing summaries of energy analysis models, tools, and software ...

175

An Integrated Modeling Analysis of Unsaturated Flow Patterns in Fractured Rock  

E-Print Network (OSTI)

Flint, E. L. , A. L. , Flint, and J. S. Selker, Influence ofResources Research, 39, (4), 4-1–4-17, Flint, A. L. , J. A.Hevesi, and L. E. Flint, Conceptual and numerical model of

Wu, Yu-Shu; Lu, Guoping; Zhang, Keni; Pan, Lehua; Bodvarsson, Gudmundur S.

2008-01-01T23:59:59.000Z

176

Cryogenic Fuel Tank Draining Analysis Model  

E-Print Network (OSTI)

One of the technological challenges in designing advanced hypersonic aircraft and the next generation of spacecraft is developing reusable flight-weight cryogenic fuel tanks. As an aid in the design and analysis of these cryogenic tanks, a computational fluid dynamics (CFD) model has been developed specifically for the analysis of flow in a cryogenic fuel tank. This model employs the full set of Navier-Stokes equations, except that viscous dissipation is neglected in the energy equation. An explicit finite difference technique in two-dimensional generalized coordinates, approximated to second-order accuracy in both space and time is used. The stiffness resulting from the low Mach number is resolved by using artificial compressibility. The model simulates the transient, two-dimensional draining of a fuel tank cross section. To calculate the slosh wave dynamics the interface between the ullage gas and liquid fuel is modeled as a free surface. Then, experimental data for free convection i...

Donald Greer Research; Donald Greer

1999-01-01T23:59:59.000Z

177

Event Model Interfaces for Heterogeneous System Analysis  

E-Print Network (OSTI)

Complex embedded systems consist of hardware and software components from different domains, such as control and signal processing, many of them supplied by different IP vendors. The embedded system designer faces the challenge to integrate, optimize and verify the resulting heterogeneous systems. While formal verification is available for some subproblems, the analysis of the whole system is currently limited to simulation or emulation. In this paper, we tackle the analysis of global resource sharing, scheduling, and buffer sizing in heterogeneous embedded systems. For many practically used preemptive and non-preemptive hardware and software scheduling algorithms of processors and busses, semi-formal analysis techniques are known. However, they cannot be used in system level analysis due to incompatibilities of their underlying event models. This paper presents a technique to couple the analysis of local scheduling strategies via an event interface model. We derive transformation rules between the most important event models and provide proofs where necessary. We use expressive examples to illustrate their application.

Kai Richter; Rolf Ernst

2002-01-01T23:59:59.000Z

178

Space Logistics Modeling and Simulation Analysis using SpaceNet: Four Application Cases  

E-Print Network (OSTI)

The future of space exploration will not be limited to sortie-style missions to single destinations. Even in present exploration taking place at the International Space Station in low-Earth orbit, logistics is complicated by flights arriving from five launch sites on Earth. The future challenges of space logistics given complex campaigns of interconnected missions in deep space will require innovative tools to aid planning and conceptual design. This paper presents a modeling framework to evaluate the propulsive and logistics feasibility of space exploration from the macro-logistics perspective, which covers the delivery of elements and resources to support demands generated during exploration. The modeling framework is implemented in a versatile and unifying software tool, SpaceNet, for general space exploration scenario analysis. Four space exploration scenarios are presented as application cases to highlight the applicability of the framework across vastly different scenarios. The first case investigates the resupply of the International Space Station between 2010 and 2015 using 77 missions combining NASA, European Space Agency, Japanese Space Agency, Russian Space Agency, and commercial space transportation. The second case models a lunar outpost build-up consisting of 17 flights to achieve continuous human presence over eight years. The third case models and evaluates a conceptual sortie-style mission to a near-Earth object, 1999 AO10. Finally, the fourth case models a flexible path type human exploration in the vicinity of Mars using a combination of human and tele-operated exploration. Taken together these cases demonstrate the challenges and logistical requirements of future human space exploration campaigns during the period from 2010-2050 and illustrate the ability of SpaceNet to model and simulate the feasibility of meeting these requirements. I.

Paul T. Grogan; Howard K. Yue; Olivier L. De Weck

2011-01-01T23:59:59.000Z

179

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...

180

NSLS-II Conceptual Design Report (CDR)  

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

Conceptual Design Report NSLS-II CDR cover Brookhaven National Laboratory has prepared a conceptual design for a world class user facility for scientific research using synchrotron...

Note: This page contains sample records for the topic "analysis conceptual model" 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

Update 6 to: A Dispersion Modeling Analysis of Downwash from...  

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

6 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant Modeling Baseload Units 3,4,5 Update 6 to: A Dispersion Modeling Analysis of Downwash from...

182

Update 3 to: A Dispersion Modeling Analysis of Downwash from...  

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

3 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Units 1 and 4 Together Update 3 to: A Dispersion Modeling Analysis of Downwash...

183

Update 1 to: A Dispersion Modeling Analysis of Downwash from...  

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

1 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Unit 1 Emissions in a Cycling Mode Update 1 to: A Dispersion Modeling Analysis of...

184

CONCEPTUAL DESIGN REPORT  

Science Conference Proceedings (OSTI)

Brookhaven National Laboratory has prepared a conceptual design for a world class user facility for scientific research using synchrotron radiation. This facility, called the ''National Synchrotron Light Source II'' (NSLS-II), will provide ultra high brightness and flux and exceptional beam stability. It will also provide advanced insertion devices, optics, detectors, and robotics, and a suite of scientific instruments designed to maximize the scientific output of the facility. Together these will enable the study of material properties and functions with a spatial resolution of {approx}1 nm, an energy resolution of {approx}0.1 meV, and the ultra high sensitivity required to perform spectroscopy on a single atom. The overall objective of the NSLS-II project is to deliver a research facility to advance fundamental science and have the capability to characterize and understand physical properties at the nanoscale, the processes by which nanomaterials can be manipulated and assembled into more complex hierarchical structures, and the new phenomena resulting from such assemblages. It will also be a user facility made available to researchers engaged in a broad spectrum of disciplines from universities, industries, and other laboratories.

ROBINSON,K.

2006-12-31T23:59:59.000Z

185

NREL: Energy Analysis - Models and Tools Archive  

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

Models and Tools Archive Models and Tools Archive Through the years, NREL has developed and supported several models and tools to assess, analyze, and optimize renewable energy and energy efficiency technologies. Some of these have been transferred to the private market. This page lists tools we have supported, but that are no longer active. See current models and tools here. ADVISOR (ADvanced VehIcle SimulatOR) Simulate and analyze conventional, advanced, light, and heavy vehicles, including hybrid electric and fuel cell vehicles. In 2003, ADVISOR was commercialized by AVL Powertrain Engineering, Inc. Hybrid2 Conduct detailed long-term performance and economic analysis on a wide variety of hybrid power systems. RET Finance Calculate the cost of energy of renewable electricity generation

186

A multiobjective, multidisciplinary design optimization methodology for the conceptual design of distributed satellite systems  

E-Print Network (OSTI)

A multiobjective, multidisciplinary design optimization methodology for mathematically modeling the distributed satellite system (DSS) conceptual design problem as an optimization problem has been developed to advance the ...

Jilla, Cyrus D., 1974-

2002-01-01T23:59:59.000Z

187

Scripted Building Energy Modeling and Analysis: Preprint  

SciTech Connect

Building energy modeling and analysis is currently a time-intensive, error-prone, and nonreproducible process. This paper describes the scripting platform of the OpenStudio tool suite (http://openstudio.nrel.gov) and demonstrates its use in several contexts. Two classes of scripts are described and demonstrated: measures and free-form scripts. Measures are small, single-purpose scripts that conform to a predefined interface. Because measures are fairly simple, they can be written or modified by inexperienced programmers.

Hale, E.; Macumber, D.; Benne, K.; Goldwasser, D.

2012-08-01T23:59:59.000Z

188

A versatile computer model for the design and analysis of electric and hybrid vehicles  

E-Print Network (OSTI)

The primary purpose of the work reported in this thesis was to develop a versatile computer model to facilitate the design and analysis of hybrid vehicle drive-trains. A hybrid vehicle is one in which power for propulsion comes from two distinct sources, usually an internal combustion engine and an electric motor. Because of the design flexibility inherent in a propulsion system that has more than one source of energy, computer er modeling is necessary to identify which parameters are mainly responsible for the performance of the power-plant and to determine which designs are most viable. The modeling system described i@ this thesis was developed to accommodate a wide range of vehicle components and modeling techniques. The modeling framework to which the drive-train component models are attached emphasizes the functional role of components and not their implementation. This creates a uniform component interface which limits access to the inner workings of a component model and improves compatibility between various types of models. Conceptual levels of abstraction are identified in this thesis which can be used to organize information in a hybrid vehicle model. By incorporating these levels into the modeling system, the tasks associated with creating a hybrid vehicle are separated allowing the designer to focus on one aspect at a time. The modeling of the various levels occurs at independent locations in the model and the interfaces between the conceptual levels are defined so that changing the implementation of a particular level does not affect its interaction with other levels. A simulation study is then detailed to show how the model can be used to create and analyze hybrid vehicle designs. The study focuses on two control algorithms which implement a sustainable, electrically-peaking, parallel hybrid design. The first algorithm reduces fuel consumption by minimizing the amount of time that the internal combustion engine is operated. The second algorithm reduces the load on the electric motor by operating the internal combustion engine over its entire speed range. The simulation results indicate that both algorithms can successfully maintain the battery state of charge over the given drive-cycle. Finally, conclusions about the model and recommendations for future studies are discussed.

Stevens, Kenneth Michael

1996-01-01T23:59:59.000Z

189

Grid-connected integrated community energy system. Phase II, Stage 1, final report. Conceptual design, demand and fuel projections and cost analysis  

DOE Green Energy (OSTI)

The Phase I Report, Grid ICES, presented the broad alternatives and implications for development of an energy system satisfying thermal demand with the co-generation of electric power, all predicated on the use of solid fuels. Participants of the system are the University of Minnesota, operator and primary thermal user, and Northern States Power Company, primary electrical user; with St. Mary's Hospital, Fairview Hospital, and Augsburg College as Add-on Customers for the thermal service (Option I). Included for consideration are the Options of (II) solid waste disposal by the Pyrolysis Method, with heat recovery, and (III) conversion of a portion of the thermal system from steam to hot water distribution to increase co-generation capability and as a demonstration system for future expansion. This report presents the conceptual design of the energy system and each Option, with the economic implications identified so that selection of the final system can be made. Draft outline of the Environmental Assessment for the project is submitted as a separate report.

Not Available

1978-03-08T23:59:59.000Z

190

Bayesian Analysis of Errors-in-Variables Growth Curve Models  

E-Print Network (OSTI)

Mixture Models. In Robust Bayesian Analysis. Lecture NotesA. (2004). Nonparametric Bayesian Data Analysis. Statistical95-110. West, M. (1990). Bayesian Kernel Density Estimation.

Huang, Hung-Jen

2010-01-01T23:59:59.000Z

191

Thermodynamic modeling of transcription: sensitivity analysis differentiates biological mechanism from mathematical model-induced effects  

E-Print Network (OSTI)

as: Dresch et al. : Thermodynamic modeling of transcription:ARTICLE Open Access Thermodynamic modeling of transcription:on the analysis of thermodynamic models, which have been

Dresch, Jacqueline M; Liu, Xiaozhou; Arnosti, David N; Ay, Ahmet

2010-01-01T23:59:59.000Z

192

Adaptive time-frequency analysis based on autoregressive modeling  

Science Conference Proceedings (OSTI)

A new adaptive method for discrete time-frequency analysis based on autoregressive (AR) modeling is introduced. The performance of AR modeling often depends upon a good selection of the model order. The predictive least squares (PLS) principle of Rissanen ... Keywords: Adaptive filters, Autoregressive modeling, Least squares methods, Model order, Time-frequency analysis

Antonio H. Costa; Stephan Hengstler

2011-04-01T23:59:59.000Z

193

DOE Hydrogen Analysis Repository: H2A Production Model  

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

Production Model Project Summary Full Title: H2A Hydrogen Production Cost Analysis Model Project ID: 219 Principal Investigator: Todd Ramsden Brief Description: The H2A Production...

194

SLUDGE TREATMENT PROJECT KOP CONCEPTUAL DESIGN CONTROL DECISION REPORT  

SciTech Connect

This control decision addresses the Knock-Out Pot (KOP) Disposition KOP Processing System (KPS) conceptual design. The KPS functions to (1) retrieve KOP material from canisters, (2) remove particles less than 600 {micro}m in size and low density materials from the KOP material, (3) load the KOP material into Multi-Canister Overpack (MCO) baskets, and (4) stage the MCO baskets for subsequent loading into MCOs. Hazard and accident analyses of the KPS conceptual design have been performed to incorporate safety into the design process. The hazard analysis is documented in PRC-STP-00098, Knock-Out Pot Disposition Project Conceptual Design Hazard Analysis. The accident analysis is documented in PRC-STP-CN-N-00167, Knock-Out Pot Disposition Sub-Project Canister Over Lift Accident Analysis. Based on the results of these analyses, and analyses performed in support of MCO transportation and MCO processing and storage activities at the Cold Vacuum Drying Facility (CVDF) and Canister Storage Building (CSB), control decision meetings were held to determine the controls required to protect onsite and offsite receptors and facility workers. At the conceptual design stage, these controls are primarily defined by their safety functions. Safety significant structures, systems, and components (SSCs) that could provide the identified safety functions have been selected for the conceptual design. It is anticipated that some safety SSCs identified herein will be reclassified based on hazard and accident analyses performed in support of preliminary and detailed design.

CARRO CA

2010-03-09T23:59:59.000Z

195

DOE Hydrogen Analysis Repository: FLOW Model  

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

FLOW Model FLOW Model Project Summary Full Title: Chemical Engineering Process Simulation Platform - FLOW Project ID: 131 Principal Investigator: Juan Ferrada Brief Description: FLOW is a steady-state chemical process simulator. Modules have been developed for supply chain calculations, micro-economic calculations, and other calculations. Purpose Simulate steady-state chemical processes to support hydrogen infrastructure and transition analysis. Performer Principal Investigator: Juan Ferrada Organization: Oak Ridge National Laboratory (ORNL) Address: Bethel Valley 1, Bldg 5700, N217 Oak Ridge, TN 37831-6166 Telephone: 865-574-4998 Email: ferradajj@ornl.gov Sponsor(s) Name: Fred Joseck Organization: DOE Hydrogen Program Telephone: 202-586-7932 Email: Fred.Joseck@ee.doe.gov

196

Managerial Coaching Behavior and Employee Outcomes: A Structural Equation Modeling Analysis  

E-Print Network (OSTI)

During the last two decades, managerial coaching has become increasingly popular in organizations. Despite its popularity, there is a paucity of empirical evidence in the study of managerial coaching outcomes. The purpose of this study was to examine the relationships between perceived managerial coaching behavior and employee self-reported affective and performance-related outcomes based on perceptions of selected organization employees. Three theories, path-goal leadership, career motivation, and organization support, were used to frame the hypothesized conceptual model of managerial coaching outcomes for the current study. The systematic review of relevant literature identified satisfaction with work, role ambiguity, satisfaction with manager, career commitment, job performance, and organization commitment for the potential outcomes of managerial coaching. A 36-item survey including seven existing instruments was utilized to collect data. An estimation of the readability level for the survey was Flesh-Kincaid Grade Level 7.1. The survey was sent electronically to all employees in the selected government organization. The sample included 431 respondents representing a population of 1,399 employees. Descriptive statistics, principal component analysis, Cronbach‘s alpha estimates for reliability, correlation analysis, two-step modeling techniques for structural equation modeling, and Sobel tests were the analysis methods used in the study. The results of the analyses indicated that the hypothesized conceptual model was adequately supported by the empirical data of the study sample (?2/df = 3.53; CFI = .91; IFI = .91; RMSEA = .08). The further investigations suggested that managerial coaching had a direct impact on employee satisfaction with work and role clarity and an indirect impact on satisfaction with work, career commitment, job performance, and organization commitment. Role clarity, as a direct outcome of managerial coaching, influenced job performance—such mediation was consistent with the hypothesized model for the study. The hypothesized model had clear and comprehensive illustrations of how managerial coaching affects work and organization-related variables, satisfaction with work, role clarity, career commitment, job performance, and organization commitment. This study provides empirical support to the proposed benefits of managerial coaching in organizations, and enhances the selected theories by offering additional empirical support to them.

Kim, Sewon

2010-08-01T23:59:59.000Z

197

MODELING ANALYSIS FOR GROUT HOPPER WASTE TANK  

SciTech Connect

The Saltstone facility at Savannah River Site (SRS) has a grout hopper tank to provide agitator stirring of the Saltstone feed materials. The tank has about 300 gallon capacity to provide a larger working volume for the grout nuclear waste slurry to be held in case of a process upset, and it is equipped with a mechanical agitator, which is intended to keep the grout in motion and agitated so that it won't start to set up. The primary objective of the work was to evaluate the flow performance for mechanical agitators to prevent vortex pull-through for an adequate stirring of the feed materials and to estimate an agitator speed which provides acceptable flow performance with a 45{sup o} pitched four-blade agitator. In addition, the power consumption required for the agitator operation was estimated. The modeling calculations were performed by taking two steps of the Computational Fluid Dynamics (CFD) modeling approach. As a first step, a simple single-stage agitator model with 45{sup o} pitched propeller blades was developed for the initial scoping analysis of the flow pattern behaviors for a range of different operating conditions. Based on the initial phase-1 results, the phase-2 model with a two-stage agitator was developed for the final performance evaluations. A series of sensitivity calculations for different designs of agitators and operating conditions have been performed to investigate the impact of key parameters on the grout hydraulic performance in a 300-gallon hopper tank. For the analysis, viscous shear was modeled by using the Bingham plastic approximation. Steady state analyses with a two-equation turbulence model were performed. All analyses were based on three-dimensional results. Recommended operational guidance was developed by using the basic concept that local shear rate profiles and flow patterns can be used as a measure of hydraulic performance and spatial stirring. Flow patterns were estimated by a Lagrangian integration technique along the flow paths from the material feed inlet.

Lee, S.

2012-01-04T23:59:59.000Z

198

Grounding Analysis in Heterogeneous Soil Models: Application to Underground Substations  

E-Print Network (OSTI)

Grounding Analysis in Heterogeneous Soil Models: Application to Underground Substations Ignasi in forthcoming publications. Keywords-grounding analysis; earthing analysis, underground substations; I to a river (at substations next to hydroelectric dams), or the grounding system of a buried electrical

Colominas, Ignasi

199

ATA diagnostic beam dump conceptual design  

Science Conference Proceedings (OSTI)

A diagnostic beam dump, able to withstand 72,000 pulses (10 kA, 50 MeV/pulse) per shift was designed and analyzed. The analysis shows that the conceptual beam dump design consisting of 80 vitreous carbon plate-foam elements is able to withstand the thermal and mechanical stresses generated. X-rays produced by bremsstrahlung are absorbed by a three element copper plate-foam x-ray absorber. Cooling between bursts of electron pulses is provided by pressurized helium.

Not Available

1981-09-01T23:59:59.000Z

200

Conceptual Spawning Habitat Model to Aid in ESA Recovery Plans for Snake River Fall Chinook Salmon, 2002-2003 Annual Report.  

DOE Green Energy (OSTI)

The goal of this project is to develop a spawning habitat model that can be used to determine the physical habitat factors that are necessary to define the production potential for fall chinook salmon that spawn in large mainstem rivers like the Columbia River's Hanford Reach and Snake River. This project addresses RPA 155 in the NMFS 2000 Biological Opinion: Action 155: BPA, working with BOR, the Corps, EPA, and USGS, shall develop a program to: (1) Identify mainstem habitat sampling reaches, survey conditions, describe cause-and-effect relationships, and identify research needs; (2) Develop improvement plans for all mainstem reaches; and (3) Initiate improvements in three mainstem reaches. During FY 2003 we continued to collect and analyze information on fall chinook salmon spawning habitat characteristics in the Hanford Reach that will be used to address RPA 155, i.e., items 1-3 above. For example, in FY 2003: (1) We continued to survey spawning habitat in the Hanford Reach and develop a 2-dimensional hydraulic and habitat model that will be capable of predicting suitability of fall chinook salmon habitat in the Hanford Reach; (2) Monitor how hydro operations altered the physical and chemical characteristics of the river and the hyporheic zone within fall chinook salmon spawning areas in the Hanford Reach; (3) Published a paper on the impacts of the Columbia River hydroelectric system on main-stem habitats of fall chinook salmon (Dauble et al. 2003). This paper was made possible with data collected on this project; (4) Continued to analyze data collected in previous years that will ultimately be used to identify cause-and-effect relationships and identify research needs that will assist managers in the improvement of fall chinook habitat quality in main-stem reaches. During FY 2004 we plan to: (1) Complete preliminary reporting and submit papers based on the results of the project through FY 2004. Although we have proposed additional analysis of data be conducted in FY 2005, we anticipate a significant number of key papers being prepared and submitted in FY 2004 which will go toward identifying the data gaps this RPA is intended to address; (2) Make available data from this project for use on Project 2003-038-00 ('Evaluate restoration potential of Snake River fall chinook salmon') which is a BPA-funded project that will start in FY 2004; and (3) Present results of our work at regional and national meetings in order to facilitate technology transfer and information sharing. The objective of this project is to define the production potential of fall chinook salmon that spawn in the Hanford Reach. We will provide fisheries and resource managers with the information they need to determine if the Hanford Reach fall chinook salmon population is indeed healthy, and whether this population will be capable of seeding other satellite populations in the future. We will accomplish this purpose by continuing our on-going research at determining the carrying capacity of the Hanford Reach for producing fall chinook salmon under current operational scenarios, and then begin an assessment of whether the Reach is functioning as a model of a normative river as is widely believed. The product of our research will be a better understanding of the key habitat features for mainstem populations of anadromous salmonids, as well as a better understanding of the measures that must be taken to ensure long-term protection of the Hanford Reach fall chinook population. Although the project was originally funded in FY 1994, it was significantly redefined in FY 2000. At that time five tasks were proposed to accomplish the project objective. The purpose of this progress report is to briefly describe the activities that have been completed on each of the five tasks from FY 2000 through FY 2003.

Geist, David (Pacific Northwest National Laboratory)

2005-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Kernel principal component analysis for stochastic input model generation  

Science Conference Proceedings (OSTI)

Stochastic analysis of random heterogeneous media provides useful information only if realistic input models of the material property variations are used. These input models are often constructed from a set of experimental samples of the underlying random ... Keywords: Data-driven models, Flow in random porous media, Kernel principal component analysis, Non-linear model reduction, Stochastic partial differential equations

Xiang Ma; Nicholas Zabaras

2011-08-01T23:59:59.000Z

202

Update 4 to: A Dispersion Modeling Analysis of Downwash from...  

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

4 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Unit 4 Emissions at Maximum and Minimum Loads Update 4 to: A Dispersion Modeling...

203

Update 2 to: A Dispersion Modeling Analysis of Downwash from...  

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

2 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Unit 1 Emissions at Maximum and Minimum Loads Update 2 to: A Dispersion Modeling...

204

Update 5 to: A Dispersion Modeling Analysis of Downwash from...  

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

5 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant: Modeling Cycling Units 1, 2 plus One Baseload Unit Update 5 to: A Dispersion Modeling...

205

Electricity Markets Analysis (EMA) Model | Open Energy Information  

Open Energy Info (EERE)

Electricity Markets Analysis (EMA) Model Electricity Markets Analysis (EMA) Model 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: Electricity Markets Analysis (EMA) Model Agency/Company /Organization: Research Triangle Institute Sector: Energy Topics: Co-benefits assessment, - Energy Access, Market analysis Resource Type: Software/modeling tools User Interface: Desktop Application Complexity/Ease of Use: Advanced Website: www.rti.org/page.cfm?objectid=DDC06637-7973-4B0F-AC46B3C69E09ADA9 RelatedTo: Applied Dynamic Analysis of the Global Economy (ADAGE) Model Electricity Markets Analysis (EMA) Model Screenshot References: Electricity Markets Analysis (EMA) Model[1]

206

A hierarchical analysis of terrestrial ecosystem model Biome-BGC: Equilibrium analysis and model calibration  

Science Conference Proceedings (OSTI)

The increasing complexity of ecosystem models represents a major difficulty in tuning model parameters and analyzing simulated results. To address this problem, this study develops a hierarchical scheme that simplifies the Biome-BGC model into three functionally cascaded tiers and analyzes them sequentially. The first-tier model focuses on leaf-level ecophysiological processes; it simulates evapotranspiration and photosynthesis with prescribed leaf area index (LAI). The restriction on LAI is then lifted in the following two model tiers, which analyze how carbon and nitrogen is cycled at the whole-plant level (the second tier) and in all litter/soil pools (the third tier) to dynamically support the prescribed canopy. In particular, this study analyzes the steady state of these two model tiers by a set of equilibrium equations that are derived from Biome-BGC algorithms and are based on the principle of mass balance. Instead of spinning-up the model for thousands of climate years, these equations are able to estimate carbon/nitrogen stocks and fluxes of the target (steady-state) ecosystem directly from the results obtained by the first-tier model. The model hierarchy is examined with model experiments at four AmeriFlux sites. The results indicate that the proposed scheme can effectively calibrate Biome-BGC to simulate observed fluxes of evapotranspiration and photosynthesis; and the carbon/nitrogen stocks estimated by the equilibrium analysis approach are highly consistent with the results of model simulations. Therefore, the scheme developed in this study may serve as a practical guide to calibrate/analyze Biome-BGC; it also provides an efficient way to solve the problem of model spin-up, especially for applications over large regions. The same methodology may help analyze other similar ecosystem models as well.

Thornton, Peter E [ORNL; Wang, Weile [ORNL; Law, Beverly E. [Oregon State University; Nemani, Ramakrishna R [NASA Ames Research Center

2009-01-01T23:59:59.000Z

207

EEMIS data sector correspondence with conceptual database design  

SciTech Connect

The purpose of this report is fivefold: (1) it provides an introduction to database systems and critieria that are important in the selection of a commercial database management system; (2) it demonstrates that the mapping of the EEMIS data sector structure into the conceptual database model is complete and preserves the hierarchies implied by the EEMIS data structure; (3) it describes all fields and associated field lengths; (4) it provides accurate formulae for estimating the computer storage requirements for the conceptual models at the facility level; and (5) it provides the details of the storage requirements for oil refineries, petroleum crude storage facilities, natural gas transmission and distribution facilities, and company description records.

Croteau, K; Kydes, A S; Maier, D

1979-07-01T23:59:59.000Z

208

MINIMARS conceptual design: Final report  

DOE Green Energy (OSTI)

This volume contains the following sections: (1) fueling systems; (2) blanket; (3) alternative blanket concepts; (4) halo scraper/direct converter system study and final conceptual design; (5) heat-transport and power-conversion systems; (6) tritium systems; (7) minimars air detritiation system; (8) appropriate radiological safety design criteria; and (9) cost estimate. (MOW)

Lee, J.D. (ed.)

1986-09-01T23:59:59.000Z

209

General system architecture for BIM: An integrated approach for design and analysis  

Science Conference Proceedings (OSTI)

One of the significant benefits of Building Information Modeling (BIM) is the ability to effectively use analysis and evaluation programs during design, as feedback. However, the current dominant approach to analysis and evaluation of design proposals ... Keywords: Automated building analysis, BIM integration, Building Information Modeling, Conceptual building design, Model View Definition

Paola Sanguinetti; Sherif Abdelmohsen; JaeMin Lee; JinKook Lee; Hugo Sheward; Chuck Eastman

2012-04-01T23:59:59.000Z

210

Impact of Enthalpy-Based Ensemble Filtering Sea Ice Data Assimilation on Decadal Predictions: Simulation with a Conceptual Pycnocline Prediction Model  

Science Conference Proceedings (OSTI)

The non-Gaussian probability distribution of sea ice concentration makes it difficult to directly assimilate sea ice observations into a climate model. Because of the strong impact of the atmospheric and oceanic forcing on the sea ice state, any ...

S. Zhang; M. Winton; A. Rosati; T. Delworth; B. Huang

2013-04-01T23:59:59.000Z

211

Developing a Process-Oriented Notation for Modeling Operational Risks - A Conceptual Metamodel Approach to Operational Risk Management in Knowledge Intensive Business Processes within the Financial Industry  

Science Conference Proceedings (OSTI)

According to the Basel II committee operational risks are the least understood and manageable risks in banks. Operational risks in banks are closely linked to the underlying business process landscape. Recently, researchers have suggested to model this ...

Burkhard Weiss; Axel Winkelmann

2011-01-01T23:59:59.000Z

212

Policy Analysis Modeling System (PAMS) | Open Energy Information  

Open Energy Info (EERE)

Analysis Modeling System (PAMS) Analysis Modeling System (PAMS) (Redirected from Policy Analysis Modeling System) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Policy Analysis Modeling System Agency/Company /Organization: Lawrence Berkeley National Laboratory Sector: Energy Focus Area: Buildings, Energy Efficiency Topics: Policies/deployment programs Resource Type: Software/modeling tools User Interface: Spreadsheet Website: clasponline.org/ResourcesTools/Tools/PolicyAnalysisModelingSystem Equivalent URI: cleanenergysolutions.org/content/policy-analysis-modeling-system-pams Regulations: "Appliance & Equipment Standards and Required Labeling,Net Metering & Interconnection" is not in the list of possible values (Agriculture Efficiency Requirements, Appliance & Equipment Standards and Required Labeling, Audit Requirements, Building Certification, Building Codes, Cost Recovery/Allocation, Emissions Mitigation Scheme, Emissions Standards, Enabling Legislation, Energy Standards, Feebates, Feed-in Tariffs, Fuel Efficiency Standards, Incandescent Phase-Out, Mandates/Targets, Net Metering & Interconnection, Resource Integration Planning, Safety Standards, Upgrade Requirements, Utility/Electricity Service Costs) for this property.

213

Global Trade and Analysis Project (GTAP) Model | Open Energy Information  

Open Energy Info (EERE)

Global Trade and Analysis Project (GTAP) Model Global Trade and Analysis Project (GTAP) Model 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: Global Trade Analysis Project (GTAP) Model Agency/Company /Organization: Purdue University Sector: Climate, Energy Topics: Baseline projection, - Macroeconomic, Market analysis, Pathways analysis Resource Type: Software/modeling tools User Interface: Desktop Application Complexity/Ease of Use: Moderate Website: www.gtap.agecon.purdue.edu/models/current.asp Cost: Free References: GTAP[1] Related Tools IGES GHG Calculator For Solid Waste ICCT Roadmap Model Applied Dynamic Analysis of the Global Economy (ADAGE) Model

214

Microgrid: A Conceptual Solution  

E-Print Network (OSTI)

Abstract — Application of individual distributed generators can cause as many problems as it may solve. A better way to realize the emerging potential of distributed generation is to take a system approach which views generation and associated loads as a subsystem or a “microgrid”. During disturbances, the generation and corresponding loads can separate from the distribution system to isolate the microgrid’s load from the disturbance (providing UPS services) without harming the transmission grid’s integrity. This ability to island generation and loads together has a potential to provide a higher local reliability than that provided by the power system as a whole. In this model it is also critical to be able to use the waste heat by placing the sources near the heat load. This implies that a unit can be placed at any point on the electrical system as required by the location of the heat load.

Robert H. Lasseter; Paolo Piagi

2004-01-01T23:59:59.000Z

215

Modular analysis and modelling of risk scenarios with dependencies  

Science Conference Proceedings (OSTI)

The risk analysis of critical infrastructures such as the electric power supply or telecommunications is complicated by the fact that such infrastructures are mutually dependent. We propose a modular approach to the modelling and analysis of risk scenarios ... Keywords: Critical infrastructure, Dependency, Modular risk analysis, Risk scenario, Threat modelling

Gyrd Brændeland; Atle Refsdal; Ketil Stølen

2010-10-01T23:59:59.000Z

216

Spatial Analysis of Contaminants in 200 West Area Groundwater in Support of the 200-ZP-1 Operable Unit Pre-Conceptual Remedy Design  

Science Conference Proceedings (OSTI)

This report documents a preliminary spatial and geostatistical analysis of the distribution of several contaminants of interest (COIs) in groundwater within the unconfined aquifer beneath the 200 West Area of the Hanford Site. The contaminant plumes of interest extend within the 200-ZP-1 and 200-UP-1 groundwater operable units. The COIs included in the PNNL study were carbon tetrachloride (CTET), technetium-99 (Tc-99), iodine-129 (I-129), chloroform, plutonium, uranium, trichloroethylene (TCE), and nitrate. The project included three tasks. Task 1 involved the development of a database that includes all relevant depth-discrete data on the distribution of COIs in the study area. The second task involved a spatial analysis of the three-dimensional (3D) distribution of data for the COIs in the study area. The main focus of the task was to determine if sufficient data are available for geostatistical mapping of the COIs in 3D. Task 3 involved the generation of numerical grids of the concentration of CTET, chloroform, and Tc-99.

Murray, Christopher J.; Bott, Yi-Ju

2008-12-30T23:59:59.000Z

217

Conceptual design summary  

Science Conference Proceedings (OSTI)

The Advanced Neutron Source (ANS) is a new basic and applied research facility based on a powerful steady-state research reactor that provides beams of neutrons for measurements and experiments in the fields of materials science and engineering, biology, chemistry, materials analysis, and nuclear science. The useful neutron flux for these experiments will be at least five times, and in some cases twenty times, more than is available at the world's best existing facilities. In addition, ANS will provide irradiation capabilities for the production of radioisotopes for medical applications, research, and industry and facilities for materials irradiation testing. The need for a new steady-state neutron research facility in the United States was emphasized by the 1984 National Academy Report and confirmed by the Department of Energy's (DOE's) Energy Research Advisory Board in 1985. These studies defined a minimum thermal neutron flux requirement of 5 {times} 10{sup 19} m{sup {minus}2} {center dot} s{sup {minus}1}. The National Steering Committee for an Advanced Neutron Source, with representation from the major fields of science that will use the facility, was established in 1986 and has continued to define the performance requirements and instrument layouts needed by the user community. To minimize technical risks and safety issues, the project adopted a policy of not relying upon new inventions to meet the minimum performance criteria, and the design presented in this report is built on technologies already used in other facilities and development programs: for example, the involute aluminum-clad fuel plates common to HFIR and ILL and the uranium silicide fuel developed in DOE's Reduced Enrichment for Research and Test Reactors program and tested in reactors worldwide. At the same time, every state-of-the-art technique has been implemented to optimize neutron beam delivery at the experiments.

Peretz, F.J.

1992-09-01T23:59:59.000Z

218

Conceptual design summary  

Science Conference Proceedings (OSTI)

The Advanced Neutron Source (ANS) is a new basic and applied research facility based on a powerful steady-state research reactor that provides beams of neutrons for measurements and experiments in the fields of materials science and engineering, biology, chemistry, materials analysis, and nuclear science. The useful neutron flux for these experiments will be at least five times, and in some cases twenty times, more than is available at the world`s best existing facilities. In addition, ANS will provide irradiation capabilities for the production of radioisotopes for medical applications, research, and industry and facilities for materials irradiation testing. The need for a new steady-state neutron research facility in the United States was emphasized by the 1984 National Academy Report and confirmed by the Department of Energy`s (DOE`s) Energy Research Advisory Board in 1985. These studies defined a minimum thermal neutron flux requirement of 5 {times} 10{sup 19} m{sup {minus}2} {center_dot} s{sup {minus}1}. The National Steering Committee for an Advanced Neutron Source, with representation from the major fields of science that will use the facility, was established in 1986 and has continued to define the performance requirements and instrument layouts needed by the user community. To minimize technical risks and safety issues, the project adopted a policy of not relying upon new inventions to meet the minimum performance criteria, and the design presented in this report is built on technologies already used in other facilities and development programs: for example, the involute aluminum-clad fuel plates common to HFIR and ILL and the uranium silicide fuel developed in DOE`s Reduced Enrichment for Research and Test Reactors program and tested in reactors worldwide. At the same time, every state-of-the-art technique has been implemented to optimize neutron beam delivery at the experiments.

Peretz, F.J.

1992-09-01T23:59:59.000Z

219

Multifaceted conceptual image indexing on the world wide web  

Science Conference Proceedings (OSTI)

In this paper, we describe a user-centered design of an automated multifaceted concept-based indexing framework which analyzes the semantics of the Web image contextual information and classifies it into five broad semantic concept facets: signal, object, ... Keywords: Conceptual image indexing, Content analysis, Semantic facets, User-centered design, WWW contextual information

Fariza Fauzi; Mohammed Belkhatir

2013-03-01T23:59:59.000Z

220

Function-based failure propagation for conceptual design  

Science Conference Proceedings (OSTI)

When designing a product, the earlier the potential risks can be identified, the more costs can be saved, as it is easier to modify a design in its early stages. Several methods exist to analyze the risk in a system, but all require a mature design. ... Keywords: Conceptual Design, Function-Based Design, Probabilistic Risk Analysis

Daniel Krus; Katie Grantham lough

2009-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Bayesian models for DNA microarray data analysis  

E-Print Network (OSTI)

Selection of signi?cant genes via expression patterns is important in a microarray problem. Owing to small sample size and large number of variables (genes), the selection process can be unstable. This research proposes a hierarchical Bayesian model for gene (variable) selection. We employ latent variables in a regression setting and use a Bayesian mixture prior to perform the variable selection. Due to the binary nature of the data, the posterior distributions of the parameters are not in explicit form, and we need to use a combination of truncated sampling and Markov Chain Monte Carlo (MCMC) based computation techniques to simulate the posterior distributions. The Bayesian model is ?exible enough to identify the signi?cant genes as well as to perform future predictions. The method is applied to cancer classi?cation via cDNA microarrays. In particular, the genes BRCA1 and BRCA2 are associated with a hereditary disposition to breast cancer, and the method is used to identify the set of signi?cant genes to classify BRCA1 and others. Microarray data can also be applied to survival models. We address the issue of how to reduce the dimension in building model by selecting signi?cant genes as well as assessing the estimated survival curves. Additionally, we consider the wellknown Weibull regression and semiparametric proportional hazards (PH) models for survival analysis. With microarray data, we need to consider the case where the number of covariates p exceeds the number of samples n. Speci?cally, for a given vector of response values, which are times to event (death or censored times) and p gene expressions (covariates), we address the issue of how to reduce the dimension by selecting the responsible genes, which are controlling the survival time. This approach enables us to estimate the survival curve when n << p. In our approach, rather than ?xing the number of selected genes, we will assign a prior distribution to this number. The approach creates additional ?exibility by allowing the imposition of constraints, such as bounding the dimension via a prior, which in e?ect works as a penalty. To implement our methodology, we use a Markov Chain Monte Carlo (MCMC) method. We demonstrate the use of the methodology with (a) di?use large B??cell lymphoma (DLBCL) complementary DNA (cDNA) data and (b) Breast Carcinoma data. Lastly, we propose a mixture of Dirichlet process models using discrete wavelet transform for a curve clustering. In order to characterize these time??course gene expresssions, we consider them as trajectory functions of time and gene??speci?c parameters and obtain their wavelet coe?cients by a discrete wavelet transform. We then build cluster curves using a mixture of Dirichlet process priors.

Lee, Kyeong Eun

2006-05-01T23:59:59.000Z

222

Specification of history based constraints for access control in conceptual level  

Science Conference Proceedings (OSTI)

An access control model for Semantic Web should take the semantic relationships among the entities, defined in the abstract conceptual level (i.e., ontology level), into account. Authorization and policy specification based on a logical model let us ...

Fathiyeh Faghih; Morteza Amini; Rasool Jalili

2010-12-01T23:59:59.000Z

223

Modeling and Simulation - Center for Transportation Analysis  

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

and route airlift (CAMPS), and key components for the Department of Energy's National Energy Modeling System. We have designed and developed models for personal computers,...

224

Conceptualization And Implementation Of A Tectonic Geomorphology Study For  

Open Energy Info (EERE)

Conceptualization And Implementation Of A Tectonic Geomorphology Study For Conceptualization And Implementation Of A Tectonic Geomorphology Study For Geothermal Exploration In The Great Basin, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Conceptualization And Implementation Of A Tectonic Geomorphology Study For Geothermal Exploration In The Great Basin, USA Details Activities (0) Areas (0) Regions (0) Abstract: Characterization of tectonic extension and extensional faulting in the Great Basin, U.S.A. has been identified as a priority for geothermal exploration. Geomorphometry can be used to characterize extension rates through the quantification of tectonically induced landforms. A number of geomorphometry-based studies, within the context of tectonic geomorphology, have shown the usefulness of this type of analysis in characterizing

225

Conceptual designs for a long term {sup 238}PuO{sub 2} storage vessel  

Science Conference Proceedings (OSTI)

This is a report on conceptual designs for a long term, 250 years, storage container for plutonium oxide ([sup 238]PuO[sub 2]). These conceptual designs are based on the use of a quartz filter to release the helium generated during the plutonium decay. In this report a review of filter material selection, design concepts, thermal modeling, and filter performance are discussed.

Kwon, D.M.; Replogle, W.C.

1996-08-01T23:59:59.000Z

226

Joint Meeting on Hydrogen Delivery Modeling and Analysis Meeting...  

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

on Hydrogen Delivery Modeling and Analysis FreedomCAR and Fuels Partnership Hydrogen Delivery, Storage and Fuel Pathway Integration Tech Teams May 8-9, 2007 Energetics...

227

System Design, Analysis, Modeling, and Media Engineering Properties...  

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

modeling and simulations of * various storage systems configurations. Lead the storage system energy analysis and provide * results. Compile and obtain media engineering...

228

ME EET Seminar: MODELING, SIMULATION AND ANALYSIS OF INTEGRATED...  

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

Contacts Media Contacts ME EET Seminar: MODELING, SIMULATION AND ANALYSIS OF INTEGRATED BUILDING ENERGY AND CONTROL SYSTEMS Speaker(s): Michael Wetter Date: October 21, 2009 -...

229

Modeling, Simulation and Analysis of Integrated Building Energy...  

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

Us Department Contacts Media Contacts Modeling, Simulation and Analysis of Integrated Building Energy and Control Systems Speaker(s): Michael Wetter Date: August 10, 2009 -...

230

TSPA Model Development and Sensitivity Analysis of Processes...  

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

Processes Affecting Performance of a Salt Repository for Disposal of Heat-Generating Nuclear Waste TSPA Model Development and Sensitivity Analysis of Processes Affecting...

231

Analysis of Timescales of Response of a Simple Climate Model  

Science Conference Proceedings (OSTI)

A detailed analysis is made of various analytic solutions to a 0D climate model coupled to an upwelling diffusion ocean model. In particular, the responses to impulse, step-function, exponential, and linear forcings are addressed. The coupled ...

Robert E. Dickinson; Kimberly J. Schaudt

1998-01-01T23:59:59.000Z

232

TIPPtool: Compositional Specification and Analysis of Markovian Performance Models  

Science Conference Proceedings (OSTI)

In this short paper we briefly describe a tool which is based on a Markovian stochastic process algebra. The tool offers both model specification and quantitative model analysis in a compositional fashion, wrapped in a userfriendly graphical front-end.

Holger Hermanns; Vassilis Mertsiotakis; Markus Siegle

1999-07-01T23:59:59.000Z

233

Modeling and Hazard Analysis Using Stpa  

E-Print Network (OSTI)

A joint research project between MIT and JAXA/JAMSS is investigating the application of a new hazard analysis to the system and software in the HTV. Traditional hazard analysis focuses on component failures but software ...

Ishimatsu, Takuto

234

System for the Analysis of Global Energy Markets - Vol. I, Model Documentation  

Reports and Publications (EIA)

Documents the objectives and the conceptual and methodological approach used in the development of projections for the International Energy Outlook. The first volume of this report describes the SAGE methodology and provides an in-depth explanation of the equations of the model.

Barry Kapilow-Cohen

2003-08-01T23:59:59.000Z

235

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

236

Policy Analysis Modeling System (PAMS) | Open Energy Information  

Open Energy Info (EERE)

Policy Analysis Modeling System (PAMS) Policy Analysis Modeling System (PAMS) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Policy Analysis Modeling System Agency/Company /Organization: Lawrence Berkeley National Laboratory Sector: Energy Focus Area: Buildings, Energy Efficiency Topics: Policies/deployment programs Resource Type: Software/modeling tools User Interface: Spreadsheet Website: clasponline.org/ResourcesTools/Tools/PolicyAnalysisModelingSystem Equivalent URI: cleanenergysolutions.org/content/policy-analysis-modeling-system-pams Regulations: "Appliance & Equipment Standards and Required Labeling,Net Metering & Interconnection" is not in the list of possible values (Agriculture Efficiency Requirements, Appliance & Equipment Standards and Required Labeling, Audit Requirements, Building Certification, Building Codes, Cost Recovery/Allocation, Emissions Mitigation Scheme, Emissions Standards, Enabling Legislation, Energy Standards, Feebates, Feed-in Tariffs, Fuel Efficiency Standards, Incandescent Phase-Out, Mandates/Targets, Net Metering & Interconnection, Resource Integration Planning, Safety Standards, Upgrade Requirements, Utility/Electricity Service Costs) for this property.

237

MIT Emissions Prediction and Policy Analysis (EPPA) Model | Open Energy  

Open Energy Info (EERE)

MIT Emissions Prediction and Policy Analysis (EPPA) Model MIT Emissions Prediction and Policy Analysis (EPPA) Model 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: MIT Emissions Prediction and Policy Analysis (EPPA) Model Agency/Company /Organization: Massachusetts Institute of Technology (MIT) Topics: Analysis Tools Complexity/Ease of Use: Not Available Website: dspace.mit.edu/handle/1721.1/29790 Cost: Free Related Tools IGES GHG Calculator For Solid Waste Energy and Power Evaluation Program (ENPEP) Regional Economic Models, Inc. (REMI) Model ... further results The part of the MIT Integrated Global Systems Model (IGSM) that represents human systems; a recursive-dynamic multi-regional general equilibrium model

238

Bayesian Analysis of MTD/BMTD Models  

E-Print Network (OSTI)

and Chinese Restaurant Process . . . . . . . . . . . . 107107 Posteriors Chinese Restaurant Partition Rules . . . . .Model with DP Chinese Restaurant Representation ix Determine

Song, Huiming

2011-01-01T23:59:59.000Z

239

NREL: Energy Analysis - Models and Tools  

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

wind resource data in 13 developing countries. Contact Dan Getman for more information. Scenario Evaluation, Regionalization and Analysis (SERA) Determine optimal production and...

240

Genome Analysis and Systems Modeling Group  

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

(Microbial Genomes) Pipeline, Comprehensive Genome Analysis Pipeline Genome Channel, Java applet for the comprehensive sequence-based view of genomes. Grail, a tool for the...

Note: This page contains sample records for the topic "analysis conceptual model" 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

Bayesian Analysis of MTD/BMTD Models  

E-Print Network (OSTI)

105 Bayesian Analysis and Chinese RestaurantFunction . . . . . . . . . . . 3.2.3 Bayesian Method and ItsPros . . . . . . . . . . . . . .3.3 Bayesian Method with EM

Song, Huiming

2011-01-01T23:59:59.000Z

242

MARCIE: model checking and reachability analysis done efficiently  

Science Conference Proceedings (OSTI)

MARCIE is a tool for the analysis of generalized stochastic Petri nets which can be augmented by rewards. The supported analysis methods range from qualitative and quantitative standard properties to model checking of established temporal logics. MARCIE's ... Keywords: generalized stochastic petri nets, model checking, simulation

Monika Heiner, Christian Rohr, Martin Schwarick

2013-06-01T23:59:59.000Z

243

Final Project Report - Coupled Biogeochemical Process Evaluation for Conceptualizing Trichloriethylene Co-Metabolism: Co-Metabolic Enzyme Activity Probes and Modeling Co-Metabolism and Attenuation  

Science Conference Proceedings (OSTI)

Trichloroethene (TCE) (also known as trichloroethylene) is a common contaminant in groundwater. TCE is regulated in drinking water at a concentration of 5 µg/L, and a small mass of TCE has the potential to contaminant large volumes of water. The physical and chemical characteristics of TCE allow it to migrate quickly in most subsurface environments, and thus large plumes of contaminated groundwater can form from a single release. The migration and persistence of TCE in groundwater can be limited by biodegradation. TCE can be biodegraded via different processes under either anaerobic or aerobic conditions. Anaerobic biodegradation is widely recognized, but aerobic degradation is less well recognized. Under aerobic conditions, TCE can be oxidized to non hazardous conditions via cometabolic pathways. This study applied enzyme activity probes to demonstrate that cometabolic degradation of TCE occurs in aerobic groundwater at several locations, used laboratory microcosm studies to determine aerobic degradation rates, and extrapolated lab-measured rates to in situ rates based on concentrations of microorganisms with active enzymes involved in cometabolic TCE degradation. Microcosms were constructed using basalt chips that were inoculated with microorganisms to groundwater at the Idaho National Laboratory Test Area North TCE plume by filling a set of Flow-Through In Situ Reactors (FTISRs) with chips and placing the FTISRs into the open interval of a well for several months. A parametric study was performed to evaluate predicted degradation rates and concentration trends using a competitive inhibition kinetic model, which accounts for competition for enzyme active sites by both a growth substrate and a cometabolic substrate. The competitive inhibition kinetic expression was programmed for use in the RT3D reactive transport package. Simulations of TCE plume evolution using both competitive inhibition kinetics and first order decay were performed.

Starr, Robert C; Orr, Brennon R; Lee, M Hope; Delwiche, Mark

2010-02-26T23:59:59.000Z

244

Conceptual design of retrieval systems for emplaced transuranic waste containers in a salt bed depository. Final report  

Science Conference Proceedings (OSTI)

The US Department of Energy and the Nuclear Regulatory Commission have jurisdiction over the nuclear waste management program. Design studies were previously made of proposed repository site configurations for the receiving, processing, and storage of nuclear wastes. However, these studies did not provide operational designs that were suitable for highly reliable TRU retrieval in the deep geologic salt environment for the required 60-year period. The purpose of this report is to develop a conceptual design of a baseline retrieval system for emplaced transuranic waste containers in a salt bed depository. The conceptual design is to serve as a working model for the analysis of the performance available from the current state-of-the-art equipment and systems. Suggested regulations would be based upon the results of the performance analyses.

Fogleman, S.F.

1980-04-01T23:59:59.000Z

245

Solar Advisor Model; Session: Modeling and Analysis (Presentation)  

DOE Green Energy (OSTI)

This project supports the Solar America Initiative by: (1) providing a consistent framework for analyzing and comparing power system costs and performance across the range of solar technologies and markets, PV, solar heat systems, CSP, residential, commercial and utility markets; (2) developing and validating performance models to enable accurate calculation of levelized cost of energy (LCOE); (3) providing a consistent modeling platform for all TPP's; and (4) supporting implementation and usage of cost models.

Blair, N.

2008-04-01T23:59:59.000Z

246

Linking Bayesian networks and PLS path modeling for causal analysis  

Science Conference Proceedings (OSTI)

Causal knowledge based on causal analysis can advance the quality of decision-making and thereby facilitate a process of transforming strategic objectives into effective actions. Several creditable studies have emphasized the usefulness of causal analysis ... Keywords: Bayesian network, Causal analysis, PLS path modeling

Wei Wen Wu

2010-01-01T23:59:59.000Z

247

Grounding Analysis in Heterogeneous Soil Models: Application to Underground Substations  

Science Conference Proceedings (OSTI)

Most of the research and development work done until now in earthing analysis is devoted to cases where the soil can be modelled in terms of an homogeneous and isotropic semi-infinite continuous medium, being the soil resistivity an order of magnitude ... Keywords: grounding analysis, earthing analysis, underground substations

Ignasi Colominas; Jose Paris; Xesus Nogueira; Fermin Navarrina; Manuel Casteleiro

2012-05-01T23:59:59.000Z

248

GCFR steam generator conceptual design  

SciTech Connect

The gas-cooled fast reactor (GCFR) steam generators are large once-through heat exchangers with helically coiled tube bundles. In the GCFR demonstration plant, hot helium from the reactor core is passed through these units to produce superheated steam, which is used by the turbine generators to produce electrical power. The paper describes the conceptual design of the steam generator. The major components and functions of the design are addressed. The topics discussed are the configuration, operating conditions, design criteria, and the design verification and support programs.

Holm, R.A.; Elliott, J.P.

1980-01-01T23:59:59.000Z

249

Partnership for Economic Policy Modeling and Policy Impact Analysis (MPIA)  

Open Energy Info (EERE)

Partnership for Economic Policy Modeling and Policy Impact Analysis (MPIA) Partnership for Economic Policy Modeling and Policy Impact Analysis (MPIA) 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: Modeling and Policy Impact Analysis (MPIA) Model Agency/Company /Organization: Partnership for Economic Policy Sector: Climate, Energy Complexity/Ease of Use: Advanced Website: www.pep-net.org/programs/mpia/ Cost: Free Related Tools Asia-Pacific Integrated Model (AIM) SEAGA Intermediate Level Handbook Poverty Social Impact Analysis ... further results A computable general equilibrium model that accounts for the interactions among sectors and institutions, and their links with the global economy. A

250

NREL: Energy Analysis - Energy Sciences Technology Analysis Models...  

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

of system flexibility. It can also evaluate the role of enabling technologies such as demand response and energy storage. It is an updated version of the PVFlex model described in...

251

Data analysis with R in an experimental physics environment  

E-Print Network (OSTI)

A software package has been developed to bridge the R analysis model with the conceptual analysis environment typical of radiation physics experiments. The new package has been used in the context of a project for the validation of simulation models, where it has demonstrated its capability to satisfy typical requirements pertinent to the problem domain.

Pfeiffer, Andreas

2013-01-01T23:59:59.000Z

252

Integrated simulation environment for unmanned autonomous systems: towards a conceptual framework  

Science Conference Proceedings (OSTI)

The paper initiates a comprehensive conceptual framework for an integrated simulation environment for unmanned autonomous systems (UAS) that is capable of supporting the design, analysis, testing, and evaluation from a "system of systems" perspective. ...

M. G. Perhinschi; M. R. Napolitano; S. Tamayo

2010-01-01T23:59:59.000Z

253

DOE Hydrogen Analysis Repository: VISION Model  

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

VISION Model VISION Model Project Summary Full Title: VISION Model Project ID: 77 Principal Investigator: Margaret Singh Brief Description: Estimates the potential energy use, oil use and carbon emission impacts of advanced light- and heavy-duty highway vehicles and alternative fuels through 2050. Keywords: Alternative fueled vehicles (AFV); hybrid electric vehicles (HEV); fuel cell vehicles (FCV); emissions; greenhouse gases (GHG) Purpose The VISION model has been developed by US DOE to provide estimates of the potential energy use, oil use and carbon emission impacts to 2050 of advanced light- and heavy-duty highway vehicles and alternative fuels. It is an Excel spreadsheet model which is particularly useful in responding to quick-turnaround requests for such estimates. It is updated annually to be

254

Mathematical Models in Landscape Ecology: Stability Analysis and Numerical Tests  

Science Conference Proceedings (OSTI)

In the present paper a review of some mathematical models for the ecological evaluation of environmental systems is considered. Moreover a new model, capable to furnish more detailed information at the level of landscape units, is proposed. Numerical ... Keywords: 34D05, 92F05, Landscape ecology, Mathematical models, Stability analysis

Federica Gobattoni; Giuliana Lauro; Roberto Monaco; Raffaele Pelorosso

2013-06-01T23:59:59.000Z

255

Settlement Prediction, Gas Modeling and Slope Stability Analysis  

E-Print Network (OSTI)

Settlement Prediction, Gas Modeling and Slope Stability Analysis in Coll Cardús Landfill Li Yu using mechanical models Simulation of gas generation, transport and extraction in MSW landfill 1 models Simulation of gas generation, transport and extraction in MSW landfill 1) Analytical solution

Politècnica de Catalunya, Universitat

256

Global sensitivity analysis of stochastic computer models with joint metamodels  

Science Conference Proceedings (OSTI)

The global sensitivity analysis method used to quantify the influence of uncertain input variables on the variability in numerical model responses has already been applied to deterministic computer codes; deterministic means here that the same set of ... Keywords: Computer experiment, Gaussian process, Generalized additive model, Joint modeling, Sobol indices, Uncertainty

Amandine Marrel; Bertrand Iooss; Sébastien Veiga; Mathieu Ribatet

2012-05-01T23:59:59.000Z

257

Analysis of Markov Reward Models using Zerosuppressed Multiterminal BDDs  

E-Print Network (OSTI)

. Performance variables (PV) enable the modeler to define complex per­ formance and dependabilityAnalysis of Markov Reward Models using Zero­suppressed Multi­terminal BDDs K. Lampka and M. Siegle of systems and quantitative measures of in­ terest. The underlying Markov reward models (MRMs) of­ ten

Lampka, Kai

258

Model Development and Loads Analysis of an Offshore Wind Turbine on a Tension Leg Platform with a Comparison to Other Floating Turbine Concepts: April 2009  

DOE Green Energy (OSTI)

This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. The report also provides a description of the development process of the TLP model. The model has been verified via comparisons to frequency-domain calculations. Important differences have been identified between the frequency-domain and time-domain simulations, and have generated implications for the conceptual design process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the IEC 61400-3 offshore wind turbine design standard was performed with the verified TLP model. This report compares the loads for the wind turbine on the TLP to those of an equivalent land-based turbine. Major instabilities for the TLP are identified and described.

Matha, D.

2010-02-01T23:59:59.000Z

259

TREC-3: Experience With Conceptual Relations in ...  

Science Conference Proceedings (OSTI)

... Britain, France, USSR, India, or China to control ... fighting drugs to market, from conceptualization to ... orcompany responsible for the drug project, the ...

260

TB-14 Section 4 - Conceptual Design Review  

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

requirements of the beamlines in a sector. All members of a Collaborative Access Team (CAT) should be involved in the development of the conceptual design because the primary...

Note: This page contains sample records for the topic "analysis conceptual model" 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

Nuclear Systems Modeling and Design Analysis - Nuclear Engineering Division  

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

Nuclear Systems Nuclear Systems Modeling and Design Analysis CAPABILITIES Overview Nuclear Systems Modeling and Design Analysis Nuclear Systems Technologies Risk and Safety Assessments Nonproliferation and National Security Materials Testing Engineering Computation & Design Engineering Experimentation Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Capabilities Nuclear Systems Modeling and Design Analysis Bookmark and Share Reactor Physics and Fuel Cycle Analysis Reactor Physics and Fuel Cycle Analysis We have played a major role in the design and analysis of most existing and past reactor types and of many

262

Trajectory Analysis and Semantic Region Modeling Using A Nonparametric Bayesian Model  

E-Print Network (OSTI)

We propose a novel nonparametric Bayesian model, Dual Hierarchical Dirichlet Processes (Dual-HDP), for trajectory analysis and semantic region modeling in surveillance settings, in an unsupervised way. In our approach, ...

Grimson, Eric

2008-06-24T23:59:59.000Z

263

Preliminary conceptual design of commercial geopressured geothermal fuel plants  

SciTech Connect

Previous feasibility studies Bechtel (1975), TRW (1975) for electric power generation utilizing geothermal resources have tended to focus primarily on the power plant and have neglected the fuel production and effluent disposal facilities. The Dow Chemical USA study (1974) for the Governor's Energy Advisory Council, State of Texas, placed equal emphasis on the power plant and the fuel plant. The study reported in Chapter II and in what follows in this chapter, also places equal emphasis on the two types of facilities. It is important that the fuel plant, the well field, the fuel processing plant, and the effluent disposal facility be the subject of a preliminary conceptual design and costing activity so that economic and net energetics analysis can be performed. The activity also serves to assess technological maturity of the fuel plant and to identify technical problems requiring further study. The resource considered was the model resource outlined in Sectio B, Chapter II. Fuel plants were outlined for three power generation plants: single-stage flash steam, two-stage flash steam, and propane secondary working fluid plant.

Underhill, Gary K.; Carlson, Ronald A.; Clendinning, William A.; Erdos, Jozsef, Erdos; Gault, John; Hall, James W.; Jones, Robert L.; Michael, Herbert K.; Powell, Paul H.; Riemann, Carl F.; Rios-Castellon, Lorenzo; Shepherd, Burchard P.; Wilson, John S.

1976-01-01T23:59:59.000Z

264

Conceptual Drawing CMRR Facility Past  

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

Volume 1 Volume 1 Chapters 1 through 10 Appendices A through D To submit questions regarding this CMRR-NF SEIS, or to request a copy, please contact: AVAILABILITY OF THE FINAL SUPPLEMENTAL ENVIRONMENTAL IMPACT STATEMENT FOR THE NUCLEAR FACILITY PORTION OF THE CHEMISTRY AND METALLURGY RESEARCH BUILDING REPLACEMENT PROJECT AT LOS ALAMOS NATIONAL LABORATORY, LOS ALAMOS, NEW MEXICO (CMRR-NF SEIS) Printed with soy ink on recycled paper John Tegtmeier, EIS Document Manager Los Alamos Site Office National Nuclear Security Administration U.S. Department of Energy 3747 West Jemez Road Los Alamos, NM 87544 Telephone: 505-665-0113 Conceptual Drawing CMRR Facility Past Present Future Past Final Supplemental Environmental Impact Statement for the

265

Modeling, Analysis, and Control of Demand Response Resources  

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

Modeling, Analysis, and Control of Demand Response Resources Speaker(s): Johanna Mathieu Date: April 27, 2012 - 12:00pm Location: 90-3122 Seminar HostPoint of Contact: Sila...

266

A Hybrid Model for Hydroturbine Generating Unit Trend Analysis  

Science Conference Proceedings (OSTI)

According to the nonlinear and nonstationary characteristics of hydroelectricity systems, an hybrid prediction model based on wavelet transform and support vector machines is proposed in this paper for the trend analysis of hydroturbine generating unit ...

Min Zou; Jianzhong Zhou; Zhong Liu; Liangliang Zhan

2007-08-01T23:59:59.000Z

267

DOE Hydrogen Analysis Repository: Macro-System Model  

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

Macro-System Model Macro-System Model Project Summary Full Title: Macro-System Model (MSM) Project ID: 66 Principal Investigator: Mark Ruth Brief Description: Federated object model framework is used to link other models to perform rapid cross-cutting analysis. Keywords: Transition; well-to-wheels (WTW); renewable; hydrogen production; emissions; cost Purpose Perform rapid cross-cutting analysis by utilizing and linking other models. This work will also improve consistency between models. Analyses that require the MSM will be used to support decisions regarding programmatic investments and focus of funding and to estimate program outputs and outcomes. Performer Principal Investigator: Mark Ruth Organization: National Renewable Energy Laboratory (NREL) Address: 1617 Cole Blvd.

268

TSPA Model Development and Sensitivity Analysis of Processes Affecting  

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

TSPA Model Development and Sensitivity Analysis of Processes TSPA Model Development and Sensitivity Analysis of Processes Affecting Performance of a Salt Repository for Disposal of Heat-Generating Nuclear Waste TSPA Model Development and Sensitivity Analysis of Processes Affecting Performance of a Salt Repository for Disposal of Heat-Generating Nuclear Waste The document describes the initial work on designing and developing requirements for a total system performance assessment (TSPA) model that can support preliminary safety assessments for a mined geologic repository for high-level waste (HLW) and spent nuclear fuel (SNF) in salt host rock at a generic site. A preliminary generic salt TSPA model for HLW/SNF disposal has been developed and tested for an isothermal repository in salt, for emplaced waste that is assumed to have no decay heat; for salt

269

On guided model-based analysis for ear biometrics  

Science Conference Proceedings (OSTI)

Ears are a new biometric with a major advantage in that they appear to maintain their structure with increasing age. Current approaches have exploited 2D and 3D images of the ear in human identification. Contending that the ear is mainly a planar shape ... Keywords: Biometrics, Ear biometrics, Ear embryology, Model-based analysis, Occlusion analysis

Banafshe Arbab-Zavar; Mark S. Nixon

2011-04-01T23:59:59.000Z

270

COMPUTATIONAL FLUID DYNAMICS MODELING ANALYSIS OF COMBUSTORS  

DOE Green Energy (OSTI)

In the current fiscal year FY01, several CFD simulations were conducted to investigate the effects of moisture in biomass/coal, particle injection locations, and flow parameters on carbon burnout and NO{sub x} inside a 150 MW GEEZER industrial boiler. Various simulations were designed to predict the suitability of biomass cofiring in coal combustors, and to explore the possibility of using biomass as a reburning fuel to reduce NO{sub x}. Some additional CFD simulations were also conducted on CERF combustor to examine the combustion characteristics of pulverized coal in enriched O{sub 2}/CO{sub 2} environments. Most of the CFD models available in the literature treat particles to be point masses with uniform temperature inside the particles. This isothermal condition may not be suitable for larger biomass particles. To this end, a stand alone program was developed from the first principles to account for heat conduction from the surface of the particle to its center. It is envisaged that the recently developed non-isothermal stand alone module will be integrated with the Fluent solver during next fiscal year to accurately predict the carbon burnout from larger biomass particles. Anisotropy in heat transfer in radial and axial will be explored using different conductivities in radial and axial directions. The above models will be validated/tested on various fullscale industrial boilers. The current NO{sub x} modules will be modified to account for local CH, CH{sub 2}, and CH{sub 3} radicals chemistry, currently it is based on global chemistry. It may also be worth exploring the effect of enriched O{sub 2}/CO{sub 2} environment on carbon burnout and NO{sub x} concentration. The research objective of this study is to develop a 3-Dimensional Combustor Model for Biomass Co-firing and reburning applications using the Fluent Computational Fluid Dynamics Code.

Mathur, M.P.; Freeman, Mark (U.S. DOE National Energy Technology Laboratory); Gera, Dinesh (Fluent, Inc.)

2001-11-06T23:59:59.000Z

271

An Empirical Analysis of Bulk Cn2 Models over Water  

Science Conference Proceedings (OSTI)

This article examines some of the difficulties associated with the determination of C2n over water in a coastal region using a bulk model. The analysis shows the need to supplement bulk models with elements that do not belong to traditional Monin–...

Guy Potvin; Denis Dion; Jacques Claverie; Paul A. Frederickson; Kenneth L. Davidson; J. Luc Forand

2008-12-01T23:59:59.000Z

272

Semiparametric Bayesian Analysis of Selection Models Jaeyong Lee  

E-Print Network (OSTI)

Semiparametric Bayesian Analysis of Selection Models Jaeyong Lee National Institute of Statistical Science James O. Berger Duke University Abstract Selection models are appropriate when a datum x enters it to be of some particular functional form. By introducing latent variables related to the selection mechanism

Berger, Jim

273

Modeling Tools for Solid Oxide Fuel Cell Analysis  

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

Tools for Solid Oxide Fuel Tools for Solid Oxide Fuel Cell Design and Analysis Moe A Khaleel BJ Koeppel, W Liu, K Lai, KP Recknagle, EM Ryan, EV Stephens, X Sun Pacific Northwest National Laboratory Richland, WA 99352 11 th Annual SECA Workshop Pittsburgh, PA July 27-29, 2009 1 PNNL SOFC Modeling Tools SOFC-MP Stack level model for fast analysis of co/counter-flow SOFC stack performance Detailed electrochemistry model Cell level model for the investigation of secondary reactions (degradation/contamination) mechanisms within the tri-layer Component-based design and performance modeling Contact material Interconnect Glass seal 2 SOFC-MP Stack Simulation Code Recent Accomplishments Major memory improvements of 3D model to accommodate 50-cell stacks on LINUX platform. Previously, developed a 2D (or stacked

274

DOE Hydrogen Analysis Repository: Policy Office Electricity Modeling System  

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

Policy Office Electricity Modeling System (POEMS) Policy Office Electricity Modeling System (POEMS) Project Summary Full Title: Policy Office Electricity Modeling System (POEMS) Project ID: 93 Principal Investigator: Lessly Goudarzi Purpose Designed and built by OnLocation specifically to address electricity industry restructuring issues Performer Principal Investigator: Lessly Goudarzi Organization: OnLocation, Inc. Address: Suite 300, 501 Church Street Vienna, VA 22180 Telephone: 703-938-5151 Email: goudarzi@onlocationinc.com Project Description Type of Project: Model Category: Energy Infrastructure Products/Deliverables Description: National Transmission Grid Study - Appendix A Publication Title: Policy Office Electricty Modeling System (POEMS) and Documentation for Transmission Analysis (PDF 461 KB) Download Adobe Reader.

275

MMA, A Computer Code for Multi-Model Analysis  

Science Conference Proceedings (OSTI)

This report documents the Multi-Model Analysis (MMA) computer code. MMA can be used to evaluate results from alternative models of a single system using the same set of observations for all models. As long as the observations, the observation weighting, and system being represented are the same, the models can differ in nearly any way imaginable. For example, they may include different processes, different simulation software, different temporal definitions (for example, steady-state and transient models could be considered), and so on. The multiple models need to be calibrated by nonlinear regression. Calibration of the individual models needs to be completed before application of MMA. MMA can be used to rank models and calculate posterior model probabilities. These can be used to (1) determine the relative importance of the characteristics embodied in the alternative models, (2) calculate model-averaged parameter estimates and predictions, and (3) quantify the uncertainty of parameter estimates and predictions in a way that integrates the variations represented by the alternative models. There is a lack of consensus on what model analysis methods are best, so MMA provides four default methods. Two are based on Kullback-Leibler information, and use the AIC (Akaike Information Criterion) or AICc (second-order-bias-corrected AIC) model discrimination criteria. The other two default methods are the BIC (Bayesian Information Criterion) and the KIC (Kashyap Information Criterion) model discrimination criteria. Use of the KIC criterion is equivalent to using the maximum-likelihood Bayesian model averaging (MLBMA) method. AIC, AICc, and BIC can be derived from Frequentist or Bayesian arguments. The default methods based on Kullback-Leibler information have a number of theoretical advantages, including that they tend to favor more complicated models as more data become available than do the other methods, which makes sense in many situations.

Eileen P. Poeter and Mary C. Hill

2007-08-20T23:59:59.000Z

276

QuantUM: Quantitative Safety Analysis of UML Models  

E-Print Network (OSTI)

When developing a safety-critical system it is essential to obtain an assessment of different design alternatives. In particular, an early safety assessment of the architectural design of a system is desirable. In spite of the plethora of available formal quantitative analysis methods it is still difficult for software and system architects to integrate these techniques into their every day work. This is mainly due to the lack of methods that can be directly applied to architecture level models, for instance given as UML diagrams. Also, it is necessary that the description methods used do not require a profound knowledge of formal methods. Our approach bridges this gap and improves the integration of quantitative safety analysis methods into the development process. All inputs of the analysis are specified at the level of a UML model. This model is then automatically translated into the analysis model, and the results of the analysis are consequently represented on the level of the UML model. Thus the analysi...

Leitner-Fischer, Florian; 10.4204/EPTCS.57.2

2011-01-01T23:59:59.000Z

277

Modeling and analysis of energy conversion systems  

DOE Green Energy (OSTI)

An investigation was conducted to assess the need for and the feasibility of developing a computer code that could model thermodynamic systems and predict the performance of energy conversion systems. To assess the market need for this code, representatives of a few industrial organizations were contacted, including manufacturers, system and component designers, and research personnel. Researchers and small manufacturers, designers, and installers were very interested in the possibility of using the proposed code. However, large companies were satisfied with the existing codes that they have developed for their own use. Also, a survey was conduced of available codes that could be used or possibly modified for the desired purpose. The codes were evaluated with respect to a list of desirable features, which was prepared as a result of the survey. A few publicly available codes were found that might be suitable. The development, verification, and maintenance of such a code would require a substantial, ongoing effort. 21 refs.

Den Braven, K.R. (Idaho Univ., Moscow, ID (USA). Dept. of Mechanical Engineering); Stanger, S. (EG and G Idaho, Inc., Idaho Falls, ID (USA))

1990-10-01T23:59:59.000Z

278

Agent-Based Modeling and Simulation for Hydrogen Transition Analysis  

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

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

279

FIREMAN: a toolkit for FIREwall Modeling and ANalysis  

E-Print Network (OSTI)

Security concerns are becoming increasingly critical in networked systems. Firewalls provide important defense for network security. However, misconfigurations in firewalls are very common and significantly weaken the desired security. This paper introduces FIREMAN, a static analysis toolkit for firewall modeling and analysis. By treating firewall configurations as specialized programs, FIREMAN applies static analysis techniques to check misconfigurations, such as policy violations, inconsistencies, and inefficiencies, in individual firewalls as well as among distributed firewalls. FIREMAN performs symbolic model checking of the firewall configurations for all possible IP packets and along all possible data paths. It is both sound and complete because of the finite state nature of firewall configurations. FIREMAN is implemented by modeling firewall rules using binary decision diagrams (BDDs), which have been used successfully in hardware verification and model checking. We have experimented with FIREMAN and used it to uncover several real misconfigurations in enterprise networks, some of which have been subsequently confirmed and corrected by the administrators of these networks. 1.

Lihua Yuan; Hao Chen

2006-01-01T23:59:59.000Z

280

Advanced conceptual design report. Phase II. Liquid effluent treatment and disposal Project W-252  

Science Conference Proceedings (OSTI)

This Advanced Conceptual Design Report (ACDR) provides a documented review and analysis of the Conceptual Design Report (CDR), WHC-SD-W252-CDR-001, June 30, 1993. The ACDR provides further design evaluation of the major design approaches and uncertainties identified in the original CDR. The ACDR will provide a firmer basis for the both the design approach and the associated planning for the performance of the Definitive Design phase of the project.

NONE

1995-01-31T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Systems Modeling | ornl.gov  

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

Computational Physics Communication Networks and Technologies Modeling and Simulation Innovative Signal Processing Algorithms Advanced Control Systems Econometrics Engineering Analysis Behavioral Sciences Geographic Information Science and Technology Quantum Information Science Supercomputing and Computation Home | Science & Discovery | Supercomputing and Computation | Research Areas | Systems Modeling SHARE Systems Modeling System modeling is the interdisciplinary study of the use of models to conceptualize and construct systems. A common type of systems modeling is function modeling, with specific techniques such as the functional flow block diagram. These models can be extended using functional decomposition, and can be linked to requirements models for further systems

282

NREL: Energy Analysis - Energy Forecasting and Modeling Staff  

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

Energy Forecasting and Modeling Energy Forecasting and Modeling The following includes summary bios of staff expertise and interests in analysis relating to energy economics, energy system planning, risk and uncertainty modeling, and energy infrastructure planning. Team Lead: Nate Blair Administrative Support: Geraly Amador Clayton Barrows Greg Brinkman Brian W Bush Stuart Cohen Carolyn Davidson Paul Denholm Victor Diakov Aron Dobos Easan Drury Kelly Eurek Janine Freeman Marissa Hummon Jennie Jorganson Jordan Macknick Trieu Mai David Mulcahy David Palchak Ben Sigrin Daniel Steinberg Patrick Sullivan Aaron Townsend Laura Vimmerstedt Andrew Weekley Owen Zinaman Photo of Clayton Barrows. Clayton Barrows Postdoctoral Researcher Areas of expertise Power system modeling Primary research interests Power and energy systems

283

Semantology as basis for conceptual knowledge processing  

Science Conference Proceedings (OSTI)

Semantology has been introduced as the theory of semantic structures and their connections which, in particular, covers the methodology of activating semantic structures for representing conceptual knowledge. It is the main aim of this paper to explain ...

Peter Eklund; Rudolf Wille

2007-02-01T23:59:59.000Z

284

Conceptual Phase Structural Design Tool for Microsatellites  

E-Print Network (OSTI)

Gaining traction or momentum in the conceptual design phase for a complex system can be an arduous and daunting process, whether the complex system being designed is a satellite, airplane, car, or one of countless other ...

McLinko, Ryan (Ryan M.)

2011-01-01T23:59:59.000Z

285

Conceptual design. Final report: TFE Verification Program  

DOE Green Energy (OSTI)

This report documents the TFE Conceptual Design, which provided the design guidance for the TFE Verification program. The primary goals of this design effort were: (1) establish the conceptual design of an in-core thermionic reactor for a 2 Mw(e) space nuclear power system with a 7-year operating lifetime; (2) demonstrate scalability of the above concept over the output power range of 500 kW(e) to 5 MW(e); and (3) define the TFE which is the basis for the 2 MW (e) reactor design. This TFE specification provided the basis for the test program. These primary goals were achieved. The technical approach taking in the conceptual design effort is discussed in Section 2, and the results are discussed in Section 3. The remainder of this introduction draws a perspective on the role that this conceptual design task played in the TFE Verification Program.

Not Available

1994-03-01T23:59:59.000Z

286

Model documentation of the Short-Term Coal Analysis System  

Science Conference Proceedings (OSTI)

The short-term coal analysis system (SCOAL) is used by the Data Analysis and Forecasting Branch (DAFB) as an analytic aid to support preparation of short-term projections of bituminous coal and lignite production at the state level, and anthracite production, domestic imports of coal, and domestic and export demand for US coal at the national level. A description of SCOAL is presented which includes a general overview of the model and its analytical capabilities. (DMC)

Not Available

1983-04-01T23:59:59.000Z

287

Analysis of price diffusion in financial markets using PUCK model  

E-Print Network (OSTI)

Based on the new type of random walk process called the Potentials of Unbalanced Complex Kinetics (PUCK) model, we theoretically show that the price diffusion in large scales is amplified 2/(2 + b) times, where b is the coefficient of quadratic term of the potential. In short time scales the price diffusion depends on the size M of the super moving average. Both numerical simulations and real data analysis of Yen-Dollar rates are consistent with theoretical analysis.

Mizuno, T; Takayasu, M; Mizuno, Takayuki; Takayasu, Hideki; Takayasu, Misako

2006-01-01T23:59:59.000Z

288

Sensitivity analysis of the fission gas behavior model in BISON.  

Science Conference Proceedings (OSTI)

This report summarizes the result of a NEAMS project focused on sensitivity analysis of a new model for the fission gas behavior (release and swelling) in the BISON fuel performance code of Idaho National Laboratory. Using the new model in BISON, the sensitivity of the calculated fission gas release and swelling to the involved parameters and the associated uncertainties is investigated. The study results in a quantitative assessment of the role of intrinsic uncertainties in the analysis of fission gas behavior in nuclear fuel.

Swiler, Laura Painton; Pastore, Giovanni [Idaho National Laboratory, Idaho Fall, ID; Perez, Danielle [Idaho National Laboratory, Idaho Fall, ID; Williamson, Richard [Idaho National Laboratory, Idaho Fall, ID

2013-05-01T23:59:59.000Z

289

Stochastic modelling of landfill leachate and biogas production incorporating waste heterogeneity. Model formulation and uncertainty analysis  

Science Conference Proceedings (OSTI)

A mathematical model simulating the hydrological and biochemical processes occurring in landfilled waste is presented and demonstrated. The model combines biochemical and hydrological models into an integrated representation of the landfill environment. Waste decomposition is modelled using traditional biochemical waste decomposition pathways combined with a simplified methodology for representing the rate of decomposition. Water flow through the waste is represented using a statistical velocity model capable of representing the effects of waste heterogeneity on leachate flow through the waste. Given the limitations in data capture from landfill sites, significant emphasis is placed on improving parameter identification and reducing parameter requirements. A sensitivity analysis is performed, highlighting the model's response to changes in input variables. A model test run is also presented, demonstrating the model capabilities. A parameter perturbation model sensitivity analysis was also performed. This has been able to show that although the model is sensitive to certain key parameters, its overall intuitive response provides a good basis for making reasonable predictions of the future state of the landfill system. Finally, due to the high uncertainty associated with landfill data, a tool for handling input data uncertainty is incorporated in the model's structure. It is concluded that the model can be used as a reasonable tool for modelling landfill processes and that further work should be undertaken to assess the model's performance.

Zacharof, A.I.; Butler, A.P

2004-07-01T23:59:59.000Z

290

Modeling, Analysis, and Control of Demand Response Resources  

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

Modeling, Analysis, and Control of Demand Response Resources Modeling, Analysis, and Control of Demand Response Resources Speaker(s): Johanna Mathieu Date: April 27, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Sila Kiliccote While the traditional goal of an electric power system has been to control supply to fulfill demand, the demand-side can play an active role in power systems via Demand Response (DR). Recent DR programs have focused on peak load reduction in commercial buildings and industrial facilities (C&I facilities). We present a regression-based baseline model, which allows us to quantify DR performance. We use this baseline model to understand the performance of C&I facilities participating in an automated dynamic pricing DR program in California. In this program, facilities are

291

Sensitivity analysis techniques for models of human behavior.  

SciTech Connect

Human and social modeling has emerged as an important research area at Sandia National Laboratories due to its potential to improve national defense-related decision-making in the presence of uncertainty. To learn about which sensitivity analysis techniques are most suitable for models of human behavior, different promising methods were applied to an example model, tested, and compared. The example model simulates cognitive, behavioral, and social processes and interactions, and involves substantial nonlinearity, uncertainty, and variability. Results showed that some sensitivity analysis methods create similar results, and can thus be considered redundant. However, other methods, such as global methods that consider interactions between inputs, can generate insight not gained from traditional methods.

Bier, Asmeret Brooke

2010-09-01T23:59:59.000Z

292

Category:Modeling Techniques | Open Energy Information  

Open Energy Info (EERE)

in this category, out of 5 total. A Analytical Modeling C Conceptual Model M Modeling-Computer Simulations N Numerical Modeling P Portfolio Risk Modeling Retrieved from "http:...

293

Multi-State Load Models for Distribution System Analysis  

Science Conference Proceedings (OSTI)

Recent work in the field of distribution system analysis has shown that the traditional method of peak load analysis is not adequate for the analysis of emerging distribution system technologies. Voltage optimization, demand response, electric vehicle charging, and energy storage are examples of technologies with characteristics having daily, seasonal, and/or annual variations. In addition to the seasonal variations, emerging technologies such as demand response and plug in electric vehicle charging have the potential to send control signals to the end use loads which will affect how they consume energy. In order to support time-series analysis over different time frames and to incorporate potential control signal inputs it is necessary to develop detailed end use load models which accurately represent the load under various conditions, and not just during the peak load period. This paper will build on previous work on detail end use load modeling in order to outline the method of general multi-state load models for distribution system analysis.

Schneider, Kevin P.; Fuller, Jason C.; Chassin, David P.

2011-11-01T23:59:59.000Z

294

Bottom/Side Lift Gantry Conceptual Design Rev. 01  

SciTech Connect

The purpose of this task is to update the existing bottom/side lift gantry analysis so that the design is consistent with Enhanced Design Alternative II (EDA II) design constraints listed in the Monitored Geologic Repository Project Description Document (CRWMS M and O 1999a, Section 2.2.1.1, p. 9a). This update is consistent with the requirements of the Technical Guidance Document for License Application Preparation (YMP 1999, Section 6.2.5.1). This update will also take into account the latest available equipment classification and Waste Emplacement/Retrieval System Description Document (SDD) (CRWMS M and O 2000c) requirements. The principal objective of this analysis is to verify that the newly developed bottom/side lift gantry concept continues to be a suitable design concept for the current Monitored Geologic Repository (MGR) design. This analysis includes an examination of the waste package (WP) transfer operation at the emplacement drift transfer dock. In addition, this analysis verifies that the gantry is compatible with the WP transporter, which has been redesigned to handle WPs sitting on pallets (CRWMS M and O 2000a). The scope of this work is to examine the existing analysis and to determine what, if any, modifications to the analysis may be required as a result of additional requirements imposed by the EDA II concept. Then, a revision will be made to the conceptual design accordingly. The analysis will also be revised to show the approximate sizes and locations of the electrical equipment and control cabinets, and to take into account the weight of that equipment in the total gantry weight. The analytical portions of the analysis are revised, as required, to address changes resulting from modifications to the conceptual design or from changes in classification and/or SDD requirements. Finally, the revised conceptual design is evaluated to verify that it continues to be a suitable method for handling the WPs within the emplacement drift. Except as noted, the scope of this work does not include any new analytical investigations or any detailed studies regarding the mechanical or electrical subsystems of the gantry beyond those in Revision 00 of this analysis. This analysis has been prepared in accordance with the requirements set forth in Bottom/Side Lift Gantry Analysis (CRWMS M and O 1999b). This analysis supports the MGR design that will be presented as part of the Site Recommendation.

Bair, P.S.

2000-04-11T23:59:59.000Z

295

State space modelling and data analysis exercises in LISA Pathfinder  

E-Print Network (OSTI)

LISA Pathfinder is a mission planned by the European Space Agency to test the key technologies that will allow the detection of gravitational waves in space. The instrument on-board, the LISA Technology package, will undergo an exhaustive campaign of calibrations and noise characterisation campaigns in order to fully describe the noise model. Data analysis plays an important role in the mission and for that reason the data analysis team has been developing a toolbox which contains all the functionalities required during operations. In this contribution we give an overview of recent activities, focusing on the improvements in the modelling of the instrument and in the data analysis campaigns performed both with real and simulated data.

M Nofrarias; F Antonucci; M Armano; H Audley; G Auger; M Benedetti; P Binetruy; J Bogenstahl; D Bortoluzzi; N Brandt; M Caleno; A Cavalleri; G Congedo; M Cruise; K Danzmann; F De Marchi; M Diaz-Aguilo; I Diepholz; G Dixon; R Dolesi; N Dunbar; J Fauste; L Ferraioli; V Ferroni W Fichter; E Fitzsimons; M Freschi; C García Marirrodriga; R Gerndt; L Gesa; F Gibert; D Giardini; C Grimani; A Grynagier; F Guzmán; I Harrison; G Heinzel; M Hewitson; D Hollington; D Hoyland; M Hueller; J Huesler; O Jennrich; P Jetzer; B Johlander; N Karnesis; N Korsakova; C Killow; X Llamas; I Lloro; A Lobo; R Maarschalkerweerd; S Madden; D Mance; I Mateos; P W McNamara; J Mendes; E Mitchell; D Nicolini; D Nicolodi; M Perreur-Lloyd; E Plagnol; P Prat; J Ramos-Castro; J Reiche; J A Romera Perez; D Robertson; H Rozemeijer; G Russano; A Schleicher; D Shaul; CF Sopuerta; T J Sumner; A Taylor; D Texier; C Trenkel; H-B Tu; S Vitale; G Wanner; H Ward; S Waschke; P Wass; D Wealthy; S Wen; W J Weber; T Ziegler; P Zweifel

2013-06-19T23:59:59.000Z

296

Empirical Study of MacroBIM and Conceptual Estimation  

E-Print Network (OSTI)

Building Information Modeling (BIM) has set up a mark in the construction industry over a decade. In order to gain benefit of BIM in estimating the project cost at the early stage of construction with the limited data available, a new concept of MacroBIM has been introduced in the industry. However, limited amount of research has been implemented to determine how MacroBIM has been accepted in the construction industry. Most research was focused on the accuracy of the conceptual estimation. This research attempted to determine the effectiveness of MacroBIM process applied at early stages of construction for conceptual cost estimation. Experts from the discipline of architecture, contractor and owners were interviewed and their professional opinions on MacroBIM were analyzed using grounded theory. The results show that, compared to the traditional conceptual estimating process, MacroBIM is an effective method for 1) saving labor hours, 2) conveying assumptions with the help of its visualization capabilities, 3) enhancing the collaboration among the project participants, and 4) evaluating multiple design scenarios. However, fear of using MacroBIM and trust in its outcome existed among some contractors, architects, and owners because this technology has not matured yet. Moreover, the need of interoperability between the MacroBIM tools and MicroBIM tools, such as Revit, has also surfaced in the study.

Gajbhiye, Anand Dhanraj

2010-05-01T23:59:59.000Z

297

Infiltration modeling guidelines for commercial building energy analysis  

SciTech Connect

This report presents a methodology for modeling air infiltration in EnergyPlus to account for envelope air barrier characteristics. Based on a review of various infiltration modeling options available in EnergyPlus and sensitivity analysis, the linear wind velocity coefficient based on DOE-2 infiltration model is recommended. The methodology described in this report can be used to calculate the EnergyPlus infiltration input for any given building level infiltration rate specified at known pressure difference. The sensitivity analysis shows that EnergyPlus calculates the wind speed based on zone altitude, and the linear wind velocity coefficient represents the variation in infiltration heat loss consistent with building location and weather data.

Gowri, Krishnan; Winiarski, David W.; Jarnagin, Ronald E.

2009-09-30T23:59:59.000Z

298

Fuel Cell Power Model for CHP and CHHP Economics and Performance Analysis (Presentation)  

DOE Green Energy (OSTI)

This presentation describes the fuel cell power model for CHP and CHHP economics and performance analysis.

Steward, D.; Penev, M.

2010-03-30T23:59:59.000Z

299

Analysis and Geochemical Modeling of Vanadium Contamination in Groundwater New Rifle Processing Site, Colorado  

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

Analysis and Geochemical Modeling of Vanadium Contamination in Groundwater New Rifle Processing Site, Colorado

300

Analysis of Attic Radiant Barrier Systems Using Mathematical Models  

E-Print Network (OSTI)

During the past six years, the Florida Solar Energy Center (FSEC) has conducted extensive experimental research on radiant barrier systems (RBS). This paper presents recent research on the development of mathematical attic models. Two levels of modeling capability have been developed. A very simplified model based on ASHRAE procedures in used to study the sensitivity of RBS performance parameters, and a very detailed finite element model is used to study highly complex phenomena, including moisture adsorption and desorption in attics. The speed of the simple model allows a large range of attic parameters to be studies quickly, and the finite element model provides a detailed understanding of combined heat and moisture transport in attics. This paper concentrates on a parametric analysis of attic RBS using the simplified model. The development of the model is described, and results of the parametric analyses are presented and discussed. Preliminary results from the finite element model are also compared with measurements from a test attic to illustrate the effects of moisture adsorption and desorption in common attics.

Fairey, P.; Swami, M.

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Integration of Facility Modeling Capabilities for Nuclear Nonproliferation Analysis  

Science Conference Proceedings (OSTI)

Developing automated methods for data collection and analysis that can facilitate nuclear nonproliferation assessment is an important research area with significant consequences for the effective global deployment of nuclear energy. Facility modeling that can integrate and interpret observations collected from monitored facilities in order to ascertain their functional details will be a critical element of these methods. Although improvements are continually sought, existing facility modeling tools can characterize all aspects of reactor operations and the majority of nuclear fuel cycle processing steps, and include algorithms for data processing and interpretation. Assessing nonproliferation status is challenging because observations can come from many sources, including local and remote sensors that monitor facility operations, as well as open sources that provide specific business information about the monitored facilities, and can be of many different types. Although many current facility models are capable of analyzing large amounts of information, they have not been integrated in an analyst-friendly manner. This paper addresses some of these facility modeling capabilities and illustrates how they could be integrated and utilized for nonproliferation analysis. The inverse problem of inferring facility conditions based on collected observations is described, along with a proposed architecture and computer framework for utilizing facility modeling tools. After considering a representative sampling of key facility modeling capabilities, the proposed integration framework is illustrated with several examples.

Humberto E. Garcia

2012-01-01T23:59:59.000Z

302

INTEGRATION OF FACILITY MODELING CAPABILITIES FOR NUCLEAR NONPROLIFERATION ANALYSIS  

SciTech Connect

Developing automated methods for data collection and analysis that can facilitate nuclear nonproliferation assessment is an important research area with significant consequences for the effective global deployment of nuclear energy. Facility modeling that can integrate and interpret observations collected from monitored facilities in order to ascertain their functional details will be a critical element of these methods. Although improvements are continually sought, existing facility modeling tools can characterize all aspects of reactor operations and the majority of nuclear fuel cycle processing steps, and include algorithms for data processing and interpretation. Assessing nonproliferation status is challenging because observations can come from many sources, including local and remote sensors that monitor facility operations, as well as open sources that provide specific business information about the monitored facilities, and can be of many different types. Although many current facility models are capable of analyzing large amounts of information, they have not been integrated in an analyst-friendly manner. This paper addresses some of these facility modeling capabilities and illustrates how they could be integrated and utilized for nonproliferation analysis. The inverse problem of inferring facility conditions based on collected observations is described, along with a proposed architecture and computer framework for utilizing facility modeling tools. After considering a representative sampling of key facility modeling capabilities, the proposed integration framework is illustrated with several examples.

Gorensek, M.; Hamm, L.; Garcia, H.; Burr, T.; Coles, G.; Edmunds, T.; Garrett, A.; Krebs, J.; Kress, R.; Lamberti, V.; Schoenwald, D.; Tzanos, C.; Ward, R.

2011-07-18T23:59:59.000Z

303

Integration of facility modeling capabilities for nuclear nonproliferation analysis  

SciTech Connect

Developing automated methods for data collection and analysis that can facilitate nuclear nonproliferation assessment is an important research area with significant consequences for the effective global deployment of nuclear energy. Facility modeling that can integrate and interpret observations collected from monitored facilities in order to ascertain their functional details will be a critical element of these methods. Although improvements are continually sought, existing facility modeling tools can characterize all aspects of reactor operations and the majority of nuclear fuel cycle processing steps, and include algorithms for data processing and interpretation. Assessing nonproliferation status is challenging because observations can come from many sources, including local and remote sensors that monitor facility operations, as well as open sources that provide specific business information about the monitored facilities, and can be of many different types. Although many current facility models are capable of analyzing large amounts of information, they have not been integrated in an analyst-friendly manner. This paper addresses some of these facility modeling capabilities and illustrates how they could be integrated and utilized for nonproliferation analysis. The inverse problem of inferring facility conditions based on collected observations is described, along with a proposed architecture and computer framework for utilizing facility modeling tools. After considering a representative sampling of key facility modeling capabilities, the proposed integration framework is illustrated with several examples.

Garcia, Humberto [Idaho National Laboratory (INL); Burr, Tom [Los Alamos National Laboratory (LANL); Coles, Garill A [ORNL; Edmunds, Thomas A. [Lawrence Livermore National Laboratory (LLNL); Garrett, Alfred [Savannah River National Laboratory (SRNL); Gorensek, Maximilian [Savannah River National Laboratory (SRNL); Hamm, Luther [Savannah River National Laboratory (SRNL); Krebs, John [Argonne National Laboratory (ANL); Kress, Reid L [ORNL; Lamberti, Vincent [Y-12 National Security Complex; Schoenwald, David [ORNL; Tzanos, Constantine P [ORNL; Ward, Richard C [ORNL

2012-01-01T23:59:59.000Z

304

PageCluster: Mining Conceptual Link Hierarchies from Web Log Files for  

E-Print Network (OSTI)

accurately than the bibliographic analysis method. Our user study also shows that the conceptual link link hierarchies, link similarity, clustering, Web site navigation, bibliographic analysis 1 and that copies show this notice on the first page or initial screen of a display along with the full citation

Zhu, Jianhan

305

Renewable Energy and Efficiency Modeling Analysis Partnership (REMAP): An Analysis of How Different Energy Models Addressed a Common High Renewable Energy Penetration Scenario in 2025  

Science Conference Proceedings (OSTI)

Energy system modeling can be intentionally or unintentionally misused by decision-makers. This report describes how both can be minimized through careful use of models and thorough understanding of their underlying approaches and assumptions. The analysis summarized here assesses the impact that model and data choices have on forecasting energy systems by comparing seven different electric-sector models. This analysis was coordinated by the Renewable Energy and Efficiency Modeling Analysis Partnership (REMAP), a collaboration among governmental, academic, and nongovernmental participants.

Blair, N.; Jenkin, T.; Milford, J.; Short, W.; Sullivan, P.; Evans, D.; Lieberman, E.; Goldstein, G.; Wright, E.; Jayaraman, K. R.; Venkatesh, B.; Kleiman, G.; Namovicz, C.; Smith, B.; Palmer, K.; Wiser, R.; Wood, F.

2009-09-01T23:59:59.000Z

306

Peer Review of NRC Standardized Plant Analysis Risk Models  

SciTech Connect

The Nuclear Regulatory Commission (NRC) Standardized Plant Analysis Risk (SPAR) Models underwent a Peer Review using ASME PRA standard (Addendum C) as endorsed by NRC in Regulatory Guide (RG) 1.200. The review was performed by a mix of industry probabilistic risk analysis (PRA) experts and NRC PRA experts. Representative SPAR models, one PWR and one BWR, were reviewed against Capability Category I of the ASME PRA standard. Capability Category I was selected as the basis for review due to the specific uses/applications of the SPAR models. The BWR SPAR model was reviewed against 331 ASME PRA Standard Supporting Requirements; however, based on the Capability Category I level of review and the absence of internal flooding and containment performance (LERF) logic only 216 requirements were determined to be applicable. Based on the review, the BWR SPAR model met 139 of the 216 supporting requirements. The review also generated 200 findings or suggestions. Of these 200 findings and suggestions 142 were findings and 58 were suggestions. The PWR SPAR model was also evaluated against the same 331 ASME PRA Standard Supporting Requirements. Of these requirements only 215 were deemed appropriate for the review (for the same reason as noted for the BWR). The PWR review determined that 125 of the 215 supporting requirements met Capability Category I or greater. The review identified 101 findings or suggestions (76 findings and 25 suggestions). These findings or suggestions were developed to identify areas where SPAR models could be enhanced. A process to prioritize and incorporate the findings/suggestions supporting requirements into the SPAR models is being developed. The prioritization process focuses on those findings that will enhance the accuracy, completeness and usability of the SPAR models.

Anthony Koonce; James Knudsen; Robert Buell

2011-03-01T23:59:59.000Z

307

Anaerobic digestion analysis model: User`s manual  

DOE Green Energy (OSTI)

The Anaerobic Digestion Analysis Model (ADAM) has been developed to assist investigators in performing preliminary economic analyses of anaerobic digestion processes. The model, which runs under Microsoft Excel{trademark}, is capable of estimating the economic performance of several different waste digestion process configurations that are defined by the user through a series of option selections. The model can be used to predict required feedstock tipping fees, product selling prices, utility rates, and raw material unit costs. The model is intended to be used as a tool to perform preliminary economic estimates that could be used to carry out simple screening analyses. The model`s current parameters are based on engineering judgments and are not reflective of any existing process; therefore, they should be carefully evaluated and modified if necessary to reflect the process under consideration. The accuracy and level of uncertainty of the estimated capital investment and operating costs are dependent on the accuracy and level of uncertainty of the model`s input parameters. The underlying methodology is capable of producing results accurate to within {+-} 30% of actual costs.

Ruth, M.; Landucci, R.

1994-08-01T23:59:59.000Z

308

Vehicle Transient Air Conditioning Analysis: Model Development& System Optimization Investigations  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL) has developed a transient air conditioning (A/C) system model using SINDA/FLUINT analysis software. It captures all the relevant physics of transient A/C system performance, including two-phase flow effects in the evaporator and condenser, system mass effects, air side heat transfer on the condenser/evaporator, vehicle speed effects, temperature-dependent properties, and integration with a simplified cabin thermal model. It has demonstrated robust and powerful system design optimization capabilities. Single-variable and multiple variable design optimizations have been performed and are presented. Various system performance parameters can be optimized, including system COP, cabin cool-down time, and system heat load capacity. This work presents this new transient A/C system analysis and optimization tool and shows some high-level system design conclusions reached to date. The work focuses on R-134a A/C systems, but future efforts will modify the model to investigate the transient performance of alternative refrigerant systems such as carbon dioxide systems. NREL is integrating its transient air conditioning model into NRELs ADVISOR vehicle system analysis software, with the objective of simultaneously optimizing A/C system designs within the overall vehicle design optimization.

Hendricks, T. J.

2001-06-01T23:59:59.000Z

309

Water Rights Analysis Package (WRAP) Modeling System Reference Manual  

E-Print Network (OSTI)

The Texas Water Resources Institute (TWRI), and many other agencies and organizations, have worked with Ralph Wurbs over the years to develop WRAP (the Water Rights Analysis Package). The WRAP model simulates management of the water resources of a river basin, or multiple-basin region, under a priority-based water allocation system. The model facilitates assessment of hydrologic and institutional water availability/reliability for existing and proposed requirements for water use and management. Basin-wide impacts of water resources development projects and management strategies may be evaluated. The software package is generalized for application to any river/reservoir/use system, with input files being developed for the particular river basin of concern. The model is documented by reference and users manuals that may be downloaded from this site along with the software. WRAP is incorporated in the Texas Commission on Environmental Quality (TCEQ) Water Availability Modeling (WAM) System.

Wurbs, R.

2012-10-01T23:59:59.000Z

310

Radiolysis Model Sensitivity Analysis for a Used Fuel Storage Canister  

SciTech Connect

This report fulfills the M3 milestone (M3FT-13PN0810027) to report on a radiolysis computer model analysis that estimates the generation of radiolytic products for a storage canister. The analysis considers radiolysis outside storage canister walls and within the canister fill gas over a possible 300-year lifetime. Previous work relied on estimates based directly on a water radiolysis G-value. This work also includes that effect with the addition of coupled kinetics for 111 reactions for 40 gas species to account for radiolytic-induced chemistry, which includes water recombination and reactions with air.

Wittman, Richard S.

2013-09-20T23:59:59.000Z

311

Solid waste integrated cost analysis model: 1991 project year report  

SciTech Connect

The purpose of the City of Houston's 1991 Solid Waste Integrated Cost Analysis Model (SWICAM) project was to continue the development of a computerized cost analysis model. This model is to provide solid waste managers with tool to evaluate the dollar cost of real or hypothetical solid waste management choices. Those choices have become complicated by the implementation of Subtitle D of the Resources Conservation and Recovery Act (RCRA) and the EPA's Integrated Approach to managing municipal solid waste;. that is, minimize generation, maximize recycling, reduce volume (incinerate), and then bury (landfill) only the remainder. Implementation of an integrated solid waste management system involving all or some of the options of recycling, waste to energy, composting, and landfilling is extremely complicated. Factors such as hauling distances, markets, and prices for recyclable, costs and benefits of transfer stations, and material recovery facilities must all be considered. A jurisdiction must determine the cost impacts of implementing a number of various possibilities for managing, handling, processing, and disposing of waste. SWICAM employs a single Lotus 123 spreadsheet to enable a jurisdiction to predict or assess the costs of its waste management system. It allows the user to select his own process flow for waste material and to manipulate the model to include as few or as many options as he or she chooses. The model will calculate the estimated cost for those choices selected. The user can then change the model to include or exclude waste stream components, until the mix of choices suits the user. Graphs can be produced as a visual communication aid in presenting the results of the cost analysis. SWICAM also allows future cost projections to be made.

Not Available

1991-01-01T23:59:59.000Z

312

Energy conserving Anisotropic Anhysteretic Magnetic Modelling for Finite Element Analysis  

E-Print Network (OSTI)

To model ferromagnetic material in finite element analysis a correct description of the constitutive relationship (BH-law) must be found from measured data. This article proposes to use the energy density function as a centrepiece. Using this function, which turns out to be a convex function of the flux density, guarantees energy conservative modelling. The magnetic field strength can be seen as a derivative with respect to the flux density. Especially for anisotropic materials (from lamination and/or grain orientation) this method has advantages. Strictly speaking this method is only valid for anhysteretic and thermodynamically stable material.

Jens Krause

2012-12-20T23:59:59.000Z

313

Foam computer model helps in analysis of underbalanced drilling  

Science Conference Proceedings (OSTI)

A new mechanistic model attempts to overcome many of the problems associated with existing foam flow analyses. The model calculates varying Fanning friction factors, rather than assumed constant factors, along the flow path. Foam generated by mixing gas and liquid for underbalanced drilling has unique rheological characteristics, making it very difficult to accurately predict the pressure profile. A user-friendly personal-computer program was developed to solve the mechanical energy balance equation for compressible foam flow. The program takes into account influxes of gas, liquid, and oil from formations. The pressure profile, foam quality, density, and cuttings transport are predicted by the model. A sensitivity analysis window allows the user to quickly optimize the hydraulics program by selecting the best combination of injection pressure, back pressure, and gas/liquid injection rates. This new model handles inclined and horizontal well bores and provides handy engineering and design tools for underbalanced drilling, well bore cleanout, and other foam operations. The paper describes rheological models, foam flow equations, equations of state, mechanical energy equations, pressure drop across nozzles, influx modeling, program operation, comparison to other models, to lab data, and to field data, and results.

Liu, G.; Medley, G.H. Jr. [Maurer Engineering Inc., Houston, TX (United States)

1996-07-01T23:59:59.000Z

314

Modeling and analysis of unsymmetrical transformer banks serving unbalanced loads  

SciTech Connect

It is a common practice to serve combination three-phase and single-phase loads from an unsymmetrical three-phase transformer bank and a four-wire secondary. Depending upon the loads and company standards, nine different transformer connections can be considered along with either an open four wire or a quadraplex secondary. The selection of the proper connection and transformer ratings can be achieved by the correct modeling and analysis of a system consisting of an equivalent source, transformer bank, secondary, and loads. This paper develops the models for the nine transformer connections, the secondary, and the loads. A computer program has been written that allows the analysis of the system for loading and short-circuit studies. The paper includes several examples of different normal and abnormal operating conditions on some of the transformer connections.

Kersting, W.H. [New Mexico State Univ., Las Cruces, NM (United States). Coll. of Engineering; Phillips, W.H. [WH Power Consultants, Las Cruces, NM (United States)

1996-05-01T23:59:59.000Z

315

Application of Bayesian Hierarchical Models in Genetic Data Analysis  

E-Print Network (OSTI)

Genetic data analysis has been capturing a lot of attentions for understanding the mechanism of the development and progressing of diseases like cancers, and is crucial in discovering genetic markers and treatment targets in medical research. This dissertation focuses on several important issues in genetic data analysis, graphical network modeling, feature selection, and covariance estimation. First, we develop a gene network modeling method for discrete gene expression data, produced by technologies such as serial analysis of gene expression and RNA sequencing experiment, which generate counts of mRNA transcripts in cell samples. We propose a generalized linear model to fit the discrete gene expression data and assume that the log ratios of the mean expression levels follow a Gaussian distribution. We derive the gene network structures by selecting covariance matrices of the Gaussian distribution with a hyper-inverse Wishart prior. We incorporate prior network models based on Gene Ontology information, which avails existing biological information on the genes of interest. Next, we consider a variable selection problem, where the variables have natural grouping structures, with application to analysis of chromosomal copy number data. The chromosomal copy number data are produced by molecular inversion probes experiments which measure probe-specific copy number changes. We propose a novel Bayesian variable selection method, the hierarchical structured variable se- lection (HSVS) method, which accounts for the natural gene and probe-within-gene architecture to identify important genes and probes associated with clinically relevant outcomes. We propose the HSVS model for grouped variable selection, where simultaneous selection of both groups and within-group variables is of interest. The HSVS model utilizes a discrete mixture prior distribution for group selection and group-specific Bayesian lasso hierarchies for variable selection within groups. We further provide methods for accounting for serial correlations within groups that incorporate Bayesian fused lasso methods for within-group selection. Finally, we propose a Bayesian method of estimating high-dimensional covariance matrices that can be decomposed into a low rank and sparse component. This covariance structure has a wide range of applications including factor analytical model and random effects model. We model the covariance matrices with the decomposition structure by representing the covariance model in the form of a factor analytic model where the number of latent factors is unknown. We introduce binary indicators for estimating the rank of the low rank component combined with a Bayesian graphical lasso method for estimating the sparse component. We further extend our method to a graphical factor analytic model where the graphical model of the residuals is of interest. We achieve sparse estimation of the inverse covariance of the residuals in the graphical factor model by employing a hyper-inverse Wishart prior method for a decomposable graph and a Bayesian graphical lasso method for an unrestricted graph.

Zhang, Lin

2012-12-01T23:59:59.000Z

316

Back analysis of microplane model parameters using soft computing methods  

E-Print Network (OSTI)

A new procedure based on layered feed-forward neural networks for the microplane material model parameters identification is proposed in the present paper. Novelties are usage of the Latin Hypercube Sampling method for the generation of training sets, a systematic employment of stochastic sensitivity analysis and a genetic algorithm-based training of a neural network by an evolutionary algorithm. Advantages and disadvantages of this approach together with possible extensions are thoroughly discussed and analyzed.

Kucerova, A; Zeman, J

2009-01-01T23:59:59.000Z

317

The Model Electric Restaurant: Volume 3: Analysis and Design  

Science Conference Proceedings (OSTI)

The Model Electric Restaurant Project was initiated in 1987 to study energy use in restaurants and other types of foodservice facilities. This report describes the second phase of the project, which ultimately involved testing a number of energy-efficient electric concepts in several restaurants in Los Angeles, California, as well as Phoenix and Mesa, Arizona. Field auditing, computer analysis, design, and testing activities revealed the best combination of electric equipment for minimizing site and sour...

1996-03-27T23:59:59.000Z

318

Bayesian analysis of inflation: Parameter estimation for single field models  

Science Conference Proceedings (OSTI)

Future astrophysical data sets promise to strengthen constraints on models of inflation, and extracting these constraints requires methods and tools commensurate with the quality of the data. In this paper we describe ModeCode, a new, publicly available code that computes the primordial scalar and tensor power spectra for single-field inflationary models. ModeCode solves the inflationary mode equations numerically, avoiding the slow roll approximation. It is interfaced with CAMB and CosmoMC to compute cosmic microwave background angular power spectra and perform likelihood analysis and parameter estimation. ModeCode is easily extendable to additional models of inflation, and future updates will include Bayesian model comparison. Errors from ModeCode contribute negligibly to the error budget for analyses of data from Planck or other next generation experiments. We constrain representative single-field models ({phi}{sup n} with n=2/3, 1, 2, and 4, natural inflation, and 'hilltop' inflation) using current data, and provide forecasts for Planck. From current data, we obtain weak but nontrivial limits on the post-inflationary physics, which is a significant source of uncertainty in the predictions of inflationary models, while we find that Planck will dramatically improve these constraints. In particular, Planck will link the inflationary dynamics with the post-inflationary growth of the horizon, and thus begin to probe the ''primordial dark ages'' between TeV and grand unified theory scale energies.

Mortonson, Michael J. [Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, Ohio 43210 (United States); Peiris, Hiranya V. [Institute of Astronomy and Kavli Institute for Cosmology, University of Cambridge, Cambridge CB3 0HA (United Kingdom); Department of Physics and Astronomy, University College London, London WC1E 6BT (United Kingdom); Easther, Richard [Department of Physics, Yale University, New Haven, Connecticut 06520 (United States)

2011-02-15T23:59:59.000Z

319

Crashworthiness analysis using advanced material models in DYNA3D  

DOE Green Energy (OSTI)

As part of an electric vehicle consortium, LLNL and Kaiser Aluminum are conducting experimental and numerical studies on crashworthy aluminum spaceframe designs. They have jointly explored the effect of heat treat on crush behavior and duplicated the experimental behavior with finite-element simulations. The major technical contributions to the state of the art in numerical simulation arise from the development and use of advanced material model descriptions for LLNL`s DYNA3D code. Constitutive model enhancements in both flow and failure have been employed for conventional materials such as low-carbon steels, and also for lighter weight materials such as aluminum and fiber composites being considered for future vehicles. The constitutive model enhancements are developed as extensions from LLNL`s work in anisotropic flow and multiaxial failure modeling. Analysis quality as a function of level of simplification of material behavior and mesh is explored, as well as the penalty in computation cost that must be paid for using more complex models and meshes. The lightweight material modeling technology is being used at the vehicle component level to explore the safety implications of small neighborhood electric vehicles manufactured almost exclusively from these materials.

Logan, R.W.; Burger, M.J.; McMichael, L.D. [Lawrence Livermore National Lab., CA (United States); Parkinson, R.D. [Kaiser Aluminum & Chemical Corp., Pleasanton, CA (United States). Center for Technology

1993-10-22T23:59:59.000Z

320

Bayesian Analysis of Inflation: Parameter Estimation for Single Field Models  

E-Print Network (OSTI)

Future astrophysical datasets promise to strengthen constraints on models of inflation, and extracting these constraints requires methods and tools commensurate with the quality of the data. In this paper we describe ModeCode, a new, publicly available code that computes the primordial scalar and tensor power spectra for single field inflationary models. ModeCode solves the inflationary mode equations numerically, avoiding the slow roll approximation. It is interfaced with CAMB and CosmoMC to compute cosmic microwave background angular power spectra and perform likelihood analysis and parameter estimation. ModeCode is easily extendable to additional models of inflation, and future updates will include Bayesian model comparison. Errors from ModeCode contribute negligibly to the error budget for analyses of data from Planck or other next generation experiments. We constrain representative single field models (phi^n with n=2/3, 1, 2, and 4, natural inflation, and "hilltop" inflation) using current data, and provide forecasts for Planck. From current data, we obtain weak but nontrivial limits on the post-inflationary physics, which is a significant source of uncertainty in the predictions of inflationary models, while we find that Planck will dramatically improve these constraints. In particular, Planck will link the inflationary dynamics with the post-inflationary growth of the horizon, and thus begin to probe the "primordial dark ages" between TeV and GUT scale energies.

Michael J. Mortonson; Hiranya V. Peiris; Richard Easther

2010-07-23T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

High-level open evolvable systems design by process-oriented modeling: application to DNA replication mechanism  

Science Conference Proceedings (OSTI)

Open Evolvable Systems' design requires a methodological [1] and conceptual paradigm different from the conventional software design. Evolvable Systems' research [2, 6, 16, and 17] has established itself as a new research field, but the content is more ... Keywords: abstractions, design, design patterns, evolvable systems, framework, method, methodologies, modeling, process-oriented modeling, requirements analysis, requirements and architecture modeling, software engineering, specification

Behzad Bastani; Hoda Bastani

2007-11-01T23:59:59.000Z

322

Mathematical modelling, analysis and computation of some complex and nonlinear flow problems.  

E-Print Network (OSTI)

???This thesis consists of two parts: (I) modelling, analysis and computation of sweat transport in textile media; (II) unconditional convergence and optimal error analysis of… (more)

Li, Buyang (???)

2012-01-01T23:59:59.000Z

323

Representative element modeling of fracture systems based on stochastic analysis  

DOE Green Energy (OSTI)

An important task associated with reservoir simulation is the development of a technique to model a large number of fractures with a single description. Representative elements must be developed before reservoir scale simulations can adequately address the effects of intersecting fracture systems on fluid migration. An effective element model will sharply reduce the cost and complexity of large scale simulations to bring these to manageable levels. Stochastic analysis is a powerful tool which can determine the hydraulic and transport characteristics of intersecting sets of statistically defined fractures. Hydraulic and transport characteristics are required to develop representative elements. Given an assumption of fully developed laminar flow, the net fracture conductivities and hence flow velocities can be determined from descriptive statistics of fracture spacing, orientation, aperture, and extent. The distribution of physical characteristics about their mean leads to a distribution of the associated conductivities. The variance of hydraulic conductivity induces dispersion into the transport process. The simplest of fracture systems, a single set of parallel fractures, is treated to demonstrate the usefulness of stochastic analysis. Explicit equations for conductivity of an element are developed and the dispersion characteristics are shown. The analysis reveals the dependence of the representative element properties on the various parameters used to describe the fracture system. 10 refs., 3 figs.

Clemo, T.M.

1986-01-01T23:59:59.000Z

324

Smart Grid Conceptual Actors/Data Flow Diagram- Cross Domain...  

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

Smart Grid Conceptual ActorsData Flow Diagram- Cross Domain Network Focued- Open SGSG-Network TF Smart Grid Conceptual ActorsData Flow Diagram- Cross Domain Network Focued- Open...

325

Design Considerations, Modeling and Analysis for the Multispectral Thermal Imager  

SciTech Connect

The design of remote sensing systems is driven by the need to provide cost-effective, substantive answers to questions posed by our customers. This is especially important for space-based systems, which tend to be expensive, and which generally cannot be changed after they are launched. We report here on the approach we employed in developing the desired attributes of a satellite mission, namely the Multispectral Thermal Imager. After an initial scoping study, we applied a procedure which we call: "End-to-end modeling and analysis (EEM)." We began with target attributes, translated to observable signatures and then propagated the signatures through the atmosphere to the sensor location. We modeled the sensor attributes to yield a simulated data stream, which was then analyzed to retrieve information about the original target. The retrieved signature was then compared to the original to obtain a figure of merit: hence the term "end-to-end modeling and analysis." We base the EEM in physics to ensure high fidelity and to permit scaling. As the actual design of the payload evolves, and as real hardware is tested, we can update the EEM to facilitate trade studies, and to judge, for example, whether components that deviate from specifications are acceptable.

Borel, C.C.; Clodius, W.B.; Cooke, B.J.; Smith, B.W.; Weber, P.G.

1999-02-01T23:59:59.000Z

326

Decline curve analysis in unconventional resource plays using logistic growth models.  

E-Print Network (OSTI)

??Current models used to forecast production in unconventional oil and gas formations are often not producing valid results. When traditional decline curve analysis models are… (more)

Clark, Aaron James

2011-01-01T23:59:59.000Z

327

Genome sequencing and analysis of the model grass Brachypodium distachyon  

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

Genome Genome sequencing and analysis of the model grass Brachypodium distachyon The International Brachypodium Initiative* Three subfamilies of grasses, the Ehrhartoideae, Panicoideae and Pooideae, provide the bulk of human nutrition and are poised to become major sources of renewable energy. Here we describe the genome sequence of the wild grass Brachypodium distachyon (Brachypodium), which is, to our knowledge, the first member of the Pooideae subfamily to be sequenced. Comparison of the Brachypodium, rice and sorghum genomes shows a precise history of genome evolution across a broad diversity of the grasses, and establishes a template for analysis of the large genomes of economically important pooid grasses such as wheat. The high-quality genome sequence, coupled with ease of cultivation and transformation, small size and rapid life cycle, will help Brachypodium reach its

328

Modeling and Analysis of Time-Varying Graphs  

E-Print Network (OSTI)

We live in a world increasingly dominated by networks -- communications, social, information, biological etc. A central attribute of many of these networks is that they are dynamic, that is, they exhibit structural changes over time. While the practice of dynamic networks has proliferated, we lag behind in the fundamental, mathematical understanding of network dynamism. Existing research on time-varying graphs ranges from preliminary algorithmic studies (e.g., Ferreira's work on evolving graphs) to analysis of specific properties such as flooding time in dynamic random graphs. A popular model for studying dynamic graphs is a sequence of graphs arranged by increasing snapshots of time. In this paper, we study the fundamental property of reachability in a time-varying graph over time and characterize the latency with respect to two metrics, namely store-or-advance latency and cut-through latency. Instead of expected value analysis, we concentrate on characterizing the exact probability distribution of routing l...

Basu, Prithwish; Ramanathan, Ram; Johnson, Matthew P

2010-01-01T23:59:59.000Z

329

Conceptual design assessment for the co-firing of bio-refinery supplied lignin project. Quarterly report, June 23--July 1, 2000  

DOE Green Energy (OSTI)

The Conceptual Design Assessment for the Co-Firing of Bio-Refinery Supplied Lignin Project was successfully kicked off on July 23, 2000 during a meeting at the TVA-PPI facility in Muscle Shoals, AL. An initial timeline for the study was distributed, issues of concern were identified and a priority actions list was developed. Next steps include meeting with NETL to discuss de-watering and lignin fuel testing, the development of the mass balance model and ethanol facility design criteria, providing TVA-Colbert with preliminary lignin fuel analysis and the procurement of representative feed materials for the pilot and bench scale testing of the hydrolysis process.

Berglund, T.; Ranney, J.T.; Babb, C.L.

2000-07-27T23:59:59.000Z

330

The Scope of Turing's Analysis of Effective Procedures  

Science Conference Proceedings (OSTI)

Turing's (1936) analysis of effective symbolic procedures is a model of conceptual clarity that plays an essential role in the philosophy of mathematics. Yet appeal is often made to the effectiveness of human procedures in other areas of philosophy. ... Keywords: Turing machine, decision problem, effective procedure, epistemic procedure, philosophy of computation

Jeremy Seligman

2002-05-01T23:59:59.000Z

331

Model Development and Analysis of the Fate and Transport of Water...  

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

Model Development and Analysis of the Fate and Transport of Water in a Salt Based Repository Model Development and Analysis of the Fate and Transport of Water in a Salt Based...

332

Modeling and Analysis using SAINT: A combined discrete/continuous network simulation language  

Science Conference Proceedings (OSTI)

SAINT, Systems Analysis of Integrated Networks of Tasks, is a network modeling and simulation technique developed to assist in the design and analysis of complex man-machine systems.* SAINT provides the concepts necessary to model systems that consist ...

David B. Wortman; Steven D. Duket; Deborah J. Seifert

1977-01-01T23:59:59.000Z

333

MODELING AND ANALYSIS OF CHEMILUMINESCENCE SENSING FOR SYNGAS, METHANE AND JET-A COMBUSTION  

E-Print Network (OSTI)

MODELING AND ANALYSIS OF CHEMILUMINESCENCE SENSING FOR SYNGAS, METHANE AND JET-A COMBUSTION of Technology August 2008 #12;MODELING AND ANALYSIS OF CHEMILUMINESCENCE SENSING FOR SYNGAS, METHANE AND JET

Seitzman, Jerry M.

334

Perfromance analysis of the Parallel Community Atmosphere Model (CAM) application  

E-Print Network (OSTI)

Efficient execution of parallel applications requires insight into how the parallel system features impact the performance of the application. Significant experimental analysis and the development of performance models enhance the understanding of such an impact. Deep understanding of an application’s major kernels and their design leads to a better understanding of the application’s performance, and hence, leads to development of better performance models. The Community Atmosphere Model (CAM) is the latest in a series of global atmospheric models developed at the National Center for Atmospheric Research (NCAR) as a community tool for NCAR and the university research community. This work focuses on analyzing CAM and understanding the impact of different architectures on this application. In the analysis of CAM, kernel coupling, which quantifies the interaction between adjacent and chains of kernels in an application, is used. All experiments are conducted on four parallel platforms: NERSC (National Energy Research Scientific Computing Center) Seaborg, SDSC (San Diego Supercomputer Center) DataStar P655, DataStar P690 and PSC (Pittsburgh Supercomputing Center) Lemieux. Experimental results indicate that kernel coupling gave an insight into many of the application characteristics. One important characteristic of CAM is that its performance is heavily dependent on a parallel platform memory hierarchy; different cache sizes and different cache policies had the major effect on CAM’s performance. Also, coupling values showed that although CAM’s kernels share many data structures, most of the coupling values are still destructive (i.e., interfering with each other so as to adversely affect performance). The kernel coupling results helps developers in pointing out the bottlenecks in memory usage in CAM. The results obtained from processor partitioning are significant in helping CAM users in choosing the right platform to run CAM.

Shawky Sharkawi, Sameh Sherif

2006-08-01T23:59:59.000Z

335

Development of a framework for truss-braced wing conceptual MDO  

Science Conference Proceedings (OSTI)

The paper describes the development of a multidisciplinary design optimization framework for conceptual design of truss-braced wing configurations. This unconventional configuration requires specialized analysis tools supported by a modular and flexible ... Keywords: Design environment, Framework, MDO, Truss-Braced Wing

Ohad Gur; Manav Bhatia; William H. Mason; Joseph A. Schetz; Rakesh K. Kapania; Taewoo Nam

2011-08-01T23:59:59.000Z

336

Southwestern Public Service Company Solar Repowering Program. Volume 1. Conceptual design and evaluation. Final technical report  

DOE Green Energy (OSTI)

The detailed conceptual design, subsystem characteristics, economic analysis, development plan, and user's assessment of repowering Southwest Public Service Company's Plant X located south of Amarillo, Texas, with a tower focus power plant are presented. The plant will utilize liquid sodium heat transfer fluids, thermal storage tanks, and a steam generator/turbine. Detailed economic and cost data are included. (WHK)

Not Available

1980-07-01T23:59:59.000Z

337

Conceptual design of a solar cogeneration facility at Pioneer Mill Co. , Ltd. Final report  

DOE Green Energy (OSTI)

A conceptual design study is made of the retrofit of a solar central receiver system to an existing cogeneration facility at a raw sugar factory in Hawaii. The existing facility is described and the studies for selecting the preferred system are presented. The conceptual design is described including requirements and load profile. Characteristics of the collector, receiver, thermal transport, master control, and nonsolar energy systems are described. An economic analysis was performed. Appendices include the system specification, site insolation, utility power purchase agreement, performance simulation results, interface data, and receiver flux maps. (LEW)

Not Available

1981-08-01T23:59:59.000Z

338

Conceptual design report, plutonium stabilization and handling,project W-460  

SciTech Connect

Project W-460, Plutonium Stabilization and Handling, encompasses procurement and installation of a Stabilization and Packaging System (SPS) to oxidize and package for long term storage remaining plutonium-bearing special nuclear materials currently in inventory at the Plutonium Finishing Plant (PFP), and modification of vault equipment to allow storage of resulting packages of stabilized SNM for up to fifty years. This Conceptual Design Report (CDR) provides conceptual design details for the vault modification, site preparation and site interface with the purchased SPS. Two concepts are described for vault configuration; acceleration of this phase of the project did not allow completion of analysis which would clearly identify a preferred approach.

Weiss, E.V.

1997-03-06T23:59:59.000Z

339

An efficient integrated approach for global sensitivity analysis of hydrological model parameters  

Science Conference Proceedings (OSTI)

Efficient sensitivity analysis, particularly for the global sensitivity analysis (GSA) to identify the most important or sensitive parameters, is crucial for understanding complex hydrological models, e.g., distributed hydrological models. In this paper, ... Keywords: DTVGM, Global sensitivity analysis, RSMSobol' method, Response surface model, Statistical emulator

Che-Sheng Zhan; Xiao-Meng Song; Jun Xia; Charles Tong

2013-03-01T23:59:59.000Z

340

Model and Seismic Analysis of Large-scale Wind Turbine Tower Structure  

Science Conference Proceedings (OSTI)

The working condition of wind turbine tower structure with a massive engine room and revolving wind wheels is very complex. The paper simplify the wind turbine tower model with finite element analysis software --ANSYS, completed modal analysis firstly, ... Keywords: wind turbine tower, model analysis, resonance, time-history analysis, dynamic

Xiang Liu; Jiangtao Kong

2012-05-01T23:59:59.000Z

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341

CFD MODELING ANALYSIS OF MECHANICAL DRAFT COOLING TOWER  

Science Conference Proceedings (OSTI)

Industrial processes use mechanical draft cooling towers (MDCT's) to dissipate waste heat by transferring heat from water to air via evaporative cooling, which causes air humidification. The Savannah River Site (SRS) has a MDCT consisting of four independent compartments called cells. Each cell has its own fan to help maximize heat transfer between ambient air and circulated water. The primary objective of the work is to conduct a parametric study for cooling tower performance under different fan speeds and ambient air conditions. The Savannah River National Laboratory (SRNL) developed a computational fluid dynamics (CFD) model to achieve the objective. The model uses three-dimensional steady-state momentum, continuity equations, air-vapor species balance equation, and two-equation turbulence as the basic governing equations. It was assumed that vapor phase is always transported by the continuous air phase with no slip velocity. In this case, water droplet component was considered as discrete phase for the interfacial heat and mass transfer via Lagrangian approach. Thus, the air-vapor mixture model with discrete water droplet phase is used for the analysis. A series of the modeling calculations was performed to investigate the impact of ambient and operating conditions on the thermal performance of the cooling tower when fans were operating and when they were turned off. The model was benchmarked against the literature data and the SRS test results for key parameters such as air temperature and humidity at the tower exit and water temperature for given ambient conditions. Detailed results will be presented here.

Lee, S; Alfred Garrett, A; James02 Bollinger, J; Larry Koffman, L

2008-03-03T23:59:59.000Z

342

Umatilla Satellite and Release Sites Project : Final Conceptual Design Report.  

DOE Green Energy (OSTI)

This report presents the results of site analysis for the Umatilla Satellite and Release Sites Project. The purpose of this project is to provide engineering services for the siting and conceptual design of satellite and release facilities for the Umatilla Basin hatchery program. The Umatilla Basin hatchery program consists of artificial production facilities for salmon and steelhead to enhance production in the Umatilla River as defined in the Umatilla master plan approved in 1989 by the Northwest Power Planning Council. Facilities identified in the master plan include adult salmon broodstock holding and spawning facilities, facilities for recovery, acclimation, and/or extended rearing of salmon juveniles, and development of river sites for release of hatchery salmon and steelhead. The historic and current distribution of fall chinook, summer chinook, and coho salmon and steelhead trout was summarized for the Umatilla River basin. Current and future production and release objectives were reviewed. Twenty seven sites were evaluated for the potential development of facilities. Engineering and environmental attributes of the sites were evaluated and compared to facility requirements for water and space. Site screening was conducted to identify the sites with the most potential for facility development. Alternative sites were selected for conceptual design of each facility type. A proposed program for adult holding facilities, final rearing/acclimation, and direct release facilities was developed.

Montgomery, James M.

1992-03-01T23:59:59.000Z

343

Northeast Oregon Hatchery Project, Conceptual Design Report, Final Report.  

DOE Green Energy (OSTI)

This report presents the results of site analysis for the Bonneville Power Administration Northeast Oregon Hatchery Project. The purpose of this project is to provide engineering services for the siting and conceptual design of hatchery facilities for the Bonneville Power Administration. The hatchery project consists of artificial production facilities for salmon and steelhead to enhance production in three adjacent tributaries to the Columbia River in northeast Oregon: the Grande Ronde, Walla Walla, and Imnaha River drainage basins. Facilities identified in the master plan include adult capture and holding facilities; spawning incubation, and early rearing facilities; full-term rearing facilities; and direct release or acclimation facilities. The evaluation includes consideration of a main production facility for one or more of the basins or several smaller satellite production facilities to be located within major subbasins. The historic and current distribution of spring and fall chinook salmon and steelhead was summarized for the Columbia River tributaries. Current and future production and release objectives were reviewed. Among the three tributaries, forty seven sites were evaluated and compared to facility requirements for water and space. Site screening was conducted to identify the sites with the most potential for facility development. Alternative sites were selected for conceptual design of each facility type. A proposed program for adult holding facilities, final rearing/acclimation, and direct release facilities was developed.

Watson, Montgomery (Montgomery Watson, Bellevue, WA)

1995-03-01T23:59:59.000Z

344

Conceptual Design of the Chornobyl New Safe Confinement - an Overview  

SciTech Connect

The Object Shelter, constructed over the Chornobyl nuclear power plant that was destroyed by a 1986 accident, is at risk of collapse. The Consortium of Bechtel, Electricité De France, and Battelle, in cooperation with subcontractor ???, recently completed the conceptual design for a New Safe Confinement (NSC) building to reduce Shelter corrosion, to mitigate the consequences of potential collapse, and to enable the safe deconstruction of unstable structures. The arch-shaped NSC will be constructed at a distance from the Shelter to minimize radiation exposure to construction workers, and then slid into place over the Shelter. After sliding, cranes and other tools inside the NSC will be remotely operated for deconstruction of the Shelter. The NSC is designed for a 100-year life. Bechtel designed the arch structure and was responsible for project management functions. Electricité De France designed the foundations and designed deconstruction of the Object Shelter unstable elements. Battelle performed safety analyses and environmental impact assessment. ??? (a consortium of ?I?? [KIEP], ??I?? [NIISK], and ???? [ISTC]), as a working partner in all aspects of the design and analysis processes, was the Ukrainian licensed engineer for conceptual design. The design is currently being reviewed by Ukrainian regulatory authorities. An open international tender for detailed design and construction is anticipated to be announced by the European Bank for Reconstruction and Development in December, 2003, with two-stage bid evaluation beginning in April, 2004.

Kulishenko, Valery N.; Hogg, Charles; Schmieman, Eric A.; Wrona, Matthew W.; Convert, Philippe; Nemchinov, Yuriy I.; Shenderovich, Victor; Shcherbin, Vladimir; Belicard, Pascal; Durst, Bruce M.

2006-05-01T23:59:59.000Z

345

Conceptual design study for a laser fusion hybrid  

SciTech Connect

Lawrence Livermore Laboratory and Bechtel Corporation have been involved in a joint effort to conceptually design a laser fusion hybrid reactor. The design which has evolved is a depleted-uranium fueled fast-fission blanket which produces fissile plutonium and electricity. A major objective of the design study was to evaluate the feasibility of producing fissile fuel with laser fusion. This feasibility evaluation was carried out by analyzing the integrated engineering performance of the complete conceptual design and by identifying the required laser/pellet performance. The performance of the laser fusion hybrid has also been compared to a typical fast breeder reactor. The results show that the laser fusion hybrid produces enough fissile material to fuel more than six light water reactors (LWR's) of equivalent thermal power while operating in a regime which requires an order of magnitude less laser and pellet performance than pure laser fusion. In comparison to a fast breeder reactor the hybrid produces 10 times more fissile fuel. An economic analysis of the design shows that the cost of electricity in a combined hybrid-LWR scenario is insensitive to the capital cost of the hybrid, increasing by only 20 to 40 percent when the capital cost of the hybrid ranges from 2 to 3 times more than an LWR.

Maniscalco, J.A.

1976-09-01T23:59:59.000Z

346

Sodium fast reactor gaps analysis of computer codes and models for accident analysis and reactor safety.  

SciTech Connect

This report summarizes the results of an expert-opinion elicitation activity designed to qualitatively assess the status and capabilities of currently available computer codes and models for accident analysis and reactor safety calculations of advanced sodium fast reactors, and identify important gaps. The twelve-member panel consisted of representatives from five U.S. National Laboratories (SNL, ANL, INL, ORNL, and BNL), the University of Wisconsin, the KAERI, the JAEA, and the CEA. The major portion of this elicitation activity occurred during a two-day meeting held on Aug. 10-11, 2010 at Argonne National Laboratory. There were two primary objectives of this work: (1) Identify computer codes currently available for SFR accident analysis and reactor safety calculations; and (2) Assess the status and capability of current US computer codes to adequately model the required accident scenarios and associated phenomena, and identify important gaps. During the review, panel members identified over 60 computer codes that are currently available in the international community to perform different aspects of SFR safety analysis for various event scenarios and accident categories. A brief description of each of these codes together with references (when available) is provided. An adaptation of the Predictive Capability Maturity Model (PCMM) for computational modeling and simulation is described for use in this work. The panel's assessment of the available US codes is presented in the form of nine tables, organized into groups of three for each of three risk categories considered: anticipated operational occurrences (AOOs), design basis accidents (DBA), and beyond design basis accidents (BDBA). A set of summary conclusions are drawn from the results obtained. At the highest level, the panel judged that current US code capabilities are adequate for licensing given reasonable margins, but expressed concern that US code development activities had stagnated and that the experienced user-base and the experimental validation base was decaying away quickly.

Carbajo, Juan (Oak Ridge National Laboratory, Oak Ridge, TN); Jeong, Hae-Yong (Korea Atomic Energy Research Institute, Daejeon, Korea); Wigeland, Roald (Idaho National Laboratory, Idaho Falls, ID); Corradini, Michael (University of Wisconsin, Madison, WI); Schmidt, Rodney Cannon; Thomas, Justin (Argonne National Laboratory, Argonne, IL); Wei, Tom (Argonne National Laboratory, Argonne, IL); Sofu, Tanju (Argonne National Laboratory, Argonne, IL); Ludewig, Hans (Brookhaven National Laboratory, Upton, NY); Tobita, Yoshiharu (Japan Atomic Energy Agency, Ibaraki-ken, Japan); Ohshima, Hiroyuki (Japan Atomic Energy Agency, Ibaraki-ken, Japan); Serre, Frederic (Centre d'%C3%94etudes nucl%C3%94eaires de Cadarache %3CU%2B2013%3E CEA, France)

2011-06-01T23:59:59.000Z

347

A Unified Technique for Dynamic Modeling and Stability Analysis of Microgrid Systems.  

E-Print Network (OSTI)

??This work presents a unified method for dynamic modeling and stability analysis of microgrid power systems. Using the automated state-model generation algorithm, a state-space model… (more)

Johnson, Brian B.

2010-01-01T23:59:59.000Z

348

The MIT Emissions Prediction and Policy Analysis (EPPA) Model: Version 4  

E-Print Network (OSTI)

The Emissions Prediction and Policy Analysis (EPPA) model is the part of the MIT Integrated Global Systems Model (IGSM) that represents the human systems. EPPA is a recursive-dynamic multi-regional general equilibrium model ...

Paltsev, Sergey.

349

A Forward Looking Version of the MIT Emissions Prediction and Policy Analysis (EPPA) Model  

E-Print Network (OSTI)

This paper documents a forward looking multi-regional general equilibrium model developed from the latest version of the recursive-dynamic MIT Emissions Prediction and Policy Analysis (EPPA) model. The model represents ...

Babiker, Mustafa M.H.

350

Analysis of WACSIS data using a directional hybrid wave model  

E-Print Network (OSTI)

This study focuses on the analysis of measured directional seas using a nonlinear model, named Directional Hybrid Wave Model (DHWM). The model has the capability of decomposing the directional wave field into its free wave components with different frequency, amplitude, direction and initial phase based on three or more time series of measured wave properties. With the information of free waves, the DHWM can predict wave properties accurately up to the second order in wave steepness. In this study, the DHWM is applied to the analyses of the data of Wave Crest Sensor Inter-comparison Study (WACSIS). The consistency between the measurements collected by different sensors in the WACSIS project was examined to ensure the data quality. The wave characteristics at the locations of selected sensors were predicted in time domain and were compared with those recorded at the same location. The degree of agreement between the predictions and the related measurements is an indicator of the consistency among different sensors. To analyze the directional seas in the presence of strong current, the original DHWM was extended to consider the Doppler effects of steady and uniform currents on the directional wave field. The advantage of extended DHWM originates from the use of the intrinsic frequency instead of the apparent frequency to determine the corresponding wavenumber and transfer functions relating wave pressure and velocities to elevation. Furthermore, a new approach is proposed to render the accurate and consistent estimates of the energy spreading parameter and mean wave direction of directional seas based on a cosine-2s model. In this approach, a Maximum Likelihood Method (MLM) is employed. Because it is more tolerant of errors in the estimated cross spectrum than a Directional Fourier Transfer (DFT) used in the conventional approach, the proposed approach is able to estimate the directional spreading parameters more accurately and consistently, which is confirmed by applying the proposed and conventional approach, respectively, to the time series generated by numerical simulation and recorded during the WACSIS project.

Zhang, Shaosong

2005-12-01T23:59:59.000Z

351

Converting Boundary Representation Solid Models to Half-Space Representation Models for Monte Carlo Analysis  

SciTech Connect

Solid modeling computer software systems provide for the design of three-dimensional solid models used in the design and analysis of physical components. The current state-of-the-art in solid modeling representation uses a boundary representation format in which geometry and topology are used to form three-dimensional boundaries of the solid. The geometry representation used in these systems is cubic B-spline curves and surfaces--a network of cubic B-spline functions in three-dimensional Cartesian coordinate space. Many Monte Carlo codes, however, use a geometry representation in which geometry units are specified by intersections and unions of half-spaces. This paper describes an algorithm for converting from a boundary representation to a half-space representation.

Davis JE, Eddy MJ, Sutton TM, Altomari TJ

2007-03-01T23:59:59.000Z

352

Iterated Function System Models in Data Analysis: Detection and Separation  

E-Print Network (OSTI)

We investigate the use of iterated function system (IFS) models for data analysis. An IFS is a discrete dynamical system in which each time step corresponds to the application of one of a finite collection of maps. The maps, which represent distinct dynamical regimes, may act in some pre-determined sequence or may be applied in random order. An algorithm is developed to detect the sequence of regime switches under the assumption of continuity. This method is tested on a simple IFS and applied to an experimental computer performance data set. This methodology has a wide range of potential uses: from change-point detection in time-series data to the field of digital communications.

Zachary Alexander; Elizabeth Bradley; Joshua Garland; James D. Meiss

2011-08-15T23:59:59.000Z

353

Improvements to Hydrogen Delivery Scenario Analysis Model (HDSAM) and Results  

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

to Hydrogen to Hydrogen Delivery Scenario Analysis Model (HDSAM) and Results May 8, 2007 Amgad Elgowainy Argonne National Laboratory Comparison of Delivery Pathways- V1.0 vs. V2.0 2 1 3 i delivery by a Loading, the plant Version 1.0 character zed components for 3 pathways with single mode. conditioning and storage are at or adjacent to Liquid Hydrogen (LH) Truck H2 Production 100 or 1500 kg/d Compressed H2 (CH) Truck H2 Production 3 or 7 kpsi 100 or 1500 kg/d H2 Production Gaseous H2 Pipeline 100 or 1500 kg/d HDSAM V1.0 Estimates Delivery Cost for 3 Pathways 4 H2 H2 1 2 3 H2 Distribution and Ci I. Liquid H2 Distribution: HDSAM V2.0 Simulates Nine Pathways Production Production LH Terminal LH Terminal Production LH Terminal Transmission Transmission Distribution

354

MDM Project: Analysis of the Micromechanics Damage Model Suite  

E-Print Network (OSTI)

This report extends a previous study of core algorithms and portability considerations associated with the Micromechanics Damage Model computer software developed by the AFRL Materials Directorate at Wright-Patterson Air Force Base. 1 The MDM analysis suite is comprised of four fracture mechanics codes used to establish design criteria for newly developed composite materials, particularly for brittle, heat-resistant composites associated with the fabrication of turbine blades. The MDM codes are based on a semi-analytical approach in which single coated fibers and the surrounding composite material are represented as a nested set of concentric shells (Fig. 1). Stresses and displacements at prescribed points along the length of the cylinder are determined by evaluation of a polynomial function. Numerically challenging conditions arise during the construction of this function. The calculation of matrix exponentials in terms of the full spectrum of eigenvalues associated with the pri...

D. C. O' neal; R. Luczak; N. J. Pagano; H. W. Brown Iii; G. P. Tandon

2000-01-01T23:59:59.000Z

355

Neutron scattering analysis with microscopic optical model potentials  

Science Conference Proceedings (OSTI)

A review of microscopic optical model potentials used in the analysis of neutron scattering and analyzing power data below 100 MeV (5 {le}E{sub n}{le}100 MeV) is presented. The quality of the fits to the data over a wide massd ({sup 6}Li-{sup 239}Pu) and energy range is discussed. It is shown that reasonably good agreement with the data is obtained with only three parameters, {lambda}{sub V}, {lambda}{sub W}, and {lambda}{sub SO}, which show a smooth mass and energy dependence. These parameters are normalizing constants to the real (V), and imaginary (W) central potentials and the real spin-orbit (V{sub SO}) potential. 14 refs., 7 figs.

Hansen, L.F.

1991-09-03T23:59:59.000Z

356

Genome sequencing and analysis of the model grass Brachypodium distachyon  

Science Conference Proceedings (OSTI)

Three subfamilies of grasses, the Ehrhartoideae, Panicoideae and Pooideae, provide the bulk of human nutrition and are poised to become major sources of renewable energy. Here we describe the genome sequence of the wild grass Brachypodium distachyon (Brachypodium), which is, to our knowledge, the first member of the Pooideae subfamily to be sequenced. Comparison of the Brachypodium, rice and sorghum genomes shows a precise history of genome evolution across a broad diversity of the grasses, and establishes a template for analysis of the large genomes of economically important pooid grasses such as wheat. The high-quality genome sequence, coupled with ease of cultivation and transformation, small size and rapid life cycle, will help Brachypodium reach its potential as an important model system for developing new energy and food crops.

Yang, Xiaohan [ORNL; Kalluri, Udaya C [ORNL; Tuskan, Gerald A [ORNL

2010-01-01T23:59:59.000Z

357

Scaling studies and conceptual experiment designs for NGNP CFD assessment  

SciTech Connect

The objective of this report is to document scaling studies and conceptual designs for flow and heat transfer experiments intended to assess CFD codes and their turbulence models proposed for application to prismatic NGNP concepts. The general approach of the project is to develop new benchmark experiments for assessment in parallel with CFD and coupled CFD/systems code calculations for the same geometry. Two aspects of the complex flow in an NGNP are being addressed: (1) flow and thermal mixing in the lower plenum ("hot streaking" issue) and (2) turbulence and resulting temperature distributions in reactor cooling channels ("hot channel" issue). Current prismatic NGNP concepts are being examined to identify their proposed flow conditions and geometries over the range from normal operation to decay heat removal in a pressurized cooldown. Approximate analyses have been applied to determine key non-dimensional parameters and their magnitudes over this operating range. For normal operation, the flow in the coolant channels can be considered to be dominant turbulent forced convection with slight transverse property variation. In a pressurized cooldown (LOFA) simulation, the flow quickly becomes laminar with some possible buoyancy influences. The flow in the lower plenum can locally be considered to be a situation of multiple hot jets into a confined crossflow -- with obstructions. Flow is expected to be turbulent with momentumdominated turbulent jets entering; buoyancy influences are estimated to be negligible in normal full power operation. Experiments are needed for the combined features of the lower plenum flows. Missing from the typical jet experiments available are interactions with nearby circular posts and with vertical posts in the vicinity of vertical walls - with near stagnant surroundings at one extreme and significant crossflow at the other. Two types of heat transfer experiments are being considered. One addresses the "hot channel" problem, if necessary. The second type will treat heated jets entering a model plenum. Unheated MIR (Matched-Index-of-Refraction) experiments are first steps when the geometry is complicated. One does not want to use a computational technique which will not even handle constant properties properly. The purpose of the fluid dynamics experiments is to develop benchmark databases for the assessment of CFD solutions of the momentum equations, scalar mixing and turbulence models for typical NGNP plenum geometries in the limiting case of negligible buoyancy and constant fluid properties. As indicated by the scaling studies, in normal full power operation of a typical NGNP conceptual design, buoyancy influences should be negligible in the lower plenum. The MIR experiment will simulate flow features of the paths of jets as they mix in flowing through the array of posts in a lower plenum en route to the single exit duct. Conceptual designs for such experiments are described.

D. M. McEligot; G. E. McCreery

2004-11-01T23:59:59.000Z

358

2H2A Hydrogen Delivery Infrastructure Analysis Models and Conventional Pathway Options Analysis Results - Interim Report  

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

H2A Hydrogen Delivery Infrastructure Analysis Models and H2A Hydrogen Delivery Infrastructure Analysis Models and Conventional Pathway Options Analysis Results DE-FG36-05GO15032 Interim Report Nexant, Inc., Air Liquide, Argonne National Laboratory, Chevron Technology Venture, Gas Technology Institute, National Renewable Energy Laboratory, Pacific Northwest National Laboratory, and TIAX LLC May 2008 Contents Section Page Executive Summary ................................................................................................................... 1-9 Delivery Options ...................................................................................................................... 1-9 Evaluation of Options 2 and 3 ................................................................................................. 1-9

359

Integrated dynamic landscape analysis and modeling system (IDLAMS) : installation manual.  

SciTech Connect

The Integrated Dynamic Landscape Analysis and Modeling System (IDLAMS) is a prototype, integrated land management technology developed through a joint effort between Argonne National Laboratory (ANL) and the US Army Corps of Engineers Construction Engineering Research Laboratories (USACERL). Dr. Ronald C. Sundell, Ms. Pamela J. Sydelko, and Ms. Kimberly A. Majerus were the principal investigators (PIs) for this project. Dr. Zhian Li was the primary software developer. Dr. Jeffrey M. Keisler, Mr. Christopher M. Klaus, and Mr. Michael C. Vogt developed the decision analysis component of this project. It was developed with funding support from the Strategic Environmental Research and Development Program (SERDP), a land/environmental stewardship research program with participation from the US Department of Defense (DoD), the US Department of Energy (DOE), and the US Environmental Protection Agency (EPA). IDLAMS predicts land conditions (e.g., vegetation, wildlife habitats, and erosion status) by simulating changes in military land ecosystems for given training intensities and land management practices. It can be used by military land managers to help predict the future ecological condition for a given land use based on land management scenarios of various levels of training intensity. It also can be used as a tool to help land managers compare different land management practices and further determine a set of land management activities and prescriptions that best suit the needs of a specific military installation.

Li, Z.; Majerus, K. A.; Sundell, R. C.; Sydelko, P. J.; Vogt, M. C.

1999-02-24T23:59:59.000Z

360

Integrated dynamic landscape analysis and modeling system (IDLAMS) : programmer's manual.  

SciTech Connect

The Integrated Dynamic Landscape Analysis and Modeling System (IDLAMS) is a prototype, integrated land management technology developed through a joint effort between Argonne National Laboratory (ANL) and the US Army Corps of Engineers Construction Engineering Research Laboratories (USACERL). Dr. Ronald C. Sundell, Ms. Pamela J. Sydelko, and Ms. Kimberly A. Majerus were the principal investigators (PIs) for this project. Dr. Zhian Li was the primary software developer. Dr. Jeffrey M. Keisler, Mr. Christopher M. Klaus, and Mr. Michael C. Vogt developed the decision analysis component of this project. It was developed with funding support from the Strategic Environmental Research and Development Program (SERDP), a land/environmental stewardship research program with participation from the US Department of Defense (DoD), the US Department of Energy (DOE), and the US Environmental Protection Agency (EPA). IDLAMS predicts land conditions (e.g., vegetation, wildlife habitats, and erosion status) by simulating changes in military land ecosystems for given training intensities and land management practices. It can be used by military land managers to help predict the future ecological condition for a given land use based on land management scenarios of various levels of training intensity. It also can be used as a tool to help land managers compare different land management practices and further determine a set of land management activities and prescriptions that best suit the needs of a specific military installation.

Klaus, C. M.; Li, Z.; Majerus, K. A.; Sundell, R. C.; Sydelko, P. J.; Vogt, M. C.

1999-02-24T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Conceptual and computational basis for the quantification of margins and uncertainty.  

Science Conference Proceedings (OSTI)

In 2001, the National Nuclear Security Administration of the U.S. Department of Energy in conjunction with the national security laboratories (i.e, Los Alamos National Laboratory, Lawrence Livermore National Laboratory and Sandia National Laboratories) initiated development of a process designated Quantification of Margins and Uncertainty (QMU) for the use of risk assessment methodologies in the certification of the reliability and safety of the nation's nuclear weapons stockpile. This presentation discusses and illustrates the conceptual and computational basis of QMU in analyses that use computational models to predict the behavior of complex systems. Topics considered include (1) the role of aleatory and epistemic uncertainty in QMU, (2) the representation of uncertainty with probability, (3) the probabilistic representation of uncertainty in QMU analyses involving only epistemic uncertainty, (4) the probabilistic representation of uncertainty in QMU analyses involving aleatory and epistemic uncertainty, (5) procedures for sampling-based uncertainty and sensitivity analysis, (6) the representation of uncertainty with alternatives to probability such as interval analysis, possibility theory and evidence theory, (7) the representation of uncertainty with alternatives to probability in QMU analyses involving only epistemic uncertainty, and (8) the representation of uncertainty with alternatives to probability in QMU analyses involving aleatory and epistemic uncertainty. Concepts and computational procedures are illustrated with both notional examples and examples from reactor safety and radioactive waste disposal.

Helton, Jon Craig (Arizona State University, Tempe, AZ)

2009-06-01T23:59:59.000Z

362

Advances in the identification of electrochemical transfer function models using Prony analysis  

Science Conference Proceedings (OSTI)

This paper further advances the usefulness and understanding of Prony analysis as a tool for identification of power system electromechanical oscillation models. These linear models are developed by analyzing power system ring-down data. The presented results allow more generality in the assumed model formulation. In addition, a comparison is made between Prony analysis and autoregressive moving-average (KARMA) modeling, which has also been proposed for analysis of system oscillations. Under the conditions investigated, the Prony algorithm performed more accurate identification.

Trudnowski, D.J. (Pacific Northwest Lab., Richland, WA (United States)); Donnelly, M.K. (Control Tech., Inc., Bozeman, MT (United States)); Hauer, J.F. (USDOE Bonneville Power Administration, Portland, OR (United States))

1993-02-01T23:59:59.000Z

363

Analysis of real-time reservoir monitoring : reservoirs, strategies, & modeling.  

Science Conference Proceedings (OSTI)

The project objective was to detail better ways to assess and exploit intelligent oil and gas field information through improved modeling, sensor technology, and process control to increase ultimate recovery of domestic hydrocarbons. To meet this objective we investigated the use of permanent downhole sensors systems (Smart Wells) whose data is fed real-time into computational reservoir models that are integrated with optimized production control systems. The project utilized a three-pronged approach (1) a value of information analysis to address the economic advantages, (2) reservoir simulation modeling and control optimization to prove the capability, and (3) evaluation of new generation sensor packaging to survive the borehole environment for long periods of time. The Value of Information (VOI) decision tree method was developed and used to assess the economic advantage of using the proposed technology; the VOI demonstrated the increased subsurface resolution through additional sensor data. Our findings show that the VOI studies are a practical means of ascertaining the value associated with a technology, in this case application of sensors to production. The procedure acknowledges the uncertainty in predictions but nevertheless assigns monetary value to the predictions. The best aspect of the procedure is that it builds consensus within interdisciplinary teams The reservoir simulation and modeling aspect of the project was developed to show the capability of exploiting sensor information both for reservoir characterization and to optimize control of the production system. Our findings indicate history matching is improved as more information is added to the objective function, clearly indicating that sensor information can help in reducing the uncertainty associated with reservoir characterization. Additional findings and approaches used are described in detail within the report. The next generation sensors aspect of the project evaluated sensors and packaging survivability issues. Our findings indicate that packaging represents the most significant technical challenge associated with application of sensors in the downhole environment for long periods (5+ years) of time. These issues are described in detail within the report. The impact of successful reservoir monitoring programs and coincident improved reservoir management is measured by the production of additional oil and gas volumes from existing reservoirs, revitalization of nearly depleted reservoirs, possible re-establishment of already abandoned reservoirs, and improved economics for all cases. Smart Well monitoring provides the means to understand how a reservoir process is developing and to provide active reservoir management. At the same time it also provides data for developing high-fidelity simulation models. This work has been a joint effort with Sandia National Laboratories and UT-Austin's Bureau of Economic Geology, Department of Petroleum and Geosystems Engineering, and the Institute of Computational and Engineering Mathematics.

Mani, Seethambal S.; van Bloemen Waanders, Bart Gustaaf; Cooper, Scott Patrick; Jakaboski, Blake Elaine; Normann, Randy Allen; Jennings, Jim (University of Texas at Austin, Austin, TX); Gilbert, Bob (University of Texas at Austin, Austin, TX); Lake, Larry W. (University of Texas at Austin, Austin, TX); Weiss, Chester Joseph; Lorenz, John Clay; Elbring, Gregory Jay; Wheeler, Mary Fanett (University of Texas at Austin, Austin, TX); Thomas, Sunil G. (University of Texas at Austin, Austin, TX); Rightley, Michael J.; Rodriguez, Adolfo (University of Texas at Austin, Austin, TX); Klie, Hector (University of Texas at Austin, Austin, TX); Banchs, Rafael (University of Texas at Austin, Austin, TX); Nunez, Emilio J. (University of Texas at Austin, Austin, TX); Jablonowski, Chris (University of Texas at Austin, Austin, TX)

2006-11-01T23:59:59.000Z

364

Design and Analysis of a Test Rig for Modeling the Bit/Formation Interface in Petroleum Drilling Applications  

E-Print Network (OSTI)

Equipment failure and well deviations are prevailing contributors to production delays within the petroleum industry. Particular monetary focus is given to the drilling operations of wells to overcome these deficits, in order to extract natural resources as efficiently, and as safely, as possible. The research presented here focuses on minimizing vibrations of the drill string near the bottom-hole assembly (BHA) by identifying the cause of external forcing on the drillstring in vertical and horizontal wells and measuring the effects of various factors on the stability of perturbations on the system. A test rig concept has been developed to accurately measure the interaction forces and torques between the bit, formation and fluids during drilling in order to clearly define a bit/formation interface law (BFIL) for the purpose vibrational analysis. As a secondary function, the rig will be able to measure the potential inputs to a drilling simulation code that can be used to model drillstring vibrations. All notable quantities will be measured including torque on bit (TOB), weight on bit (WOB), lateral impact loads (LIL), formation stiffness, bit specific properties, fluid damping coefficients and rate of penetration (ROP). The conceptual design has been analyzed and refined, in detail, to verify its operational integrity and range of measurement error. The operational envelope of the rig is such that a drill bit of up to 8 ½ inches in diameter can be effectively tested at desired operational parameters (WOB: 0-55,000 lbf, RPM: 60-200) with various rock formations and multiple fluid types. Future use and design possibilities are also discussed to enhance the functionality of the rig and the potential for further research in the area of oil and gas drilling and vibrational modeling.

Wilson, Joshua Kyle

2013-05-01T23:59:59.000Z

365

CDIF-MHD generator system conceptual design. Final report  

DOE Green Energy (OSTI)

The objective of this Program is to conduct a conceptual design of an MHD Generator System (MHD) to be coupled to candidate development coal-fired MHD combustion chambers at the MHD Component Development and Integration Facility (CDIF) for the purpose of developing design techniques utilized for the design of large MHD generators. The MHD is to be designed for continuous operation. A hexagonal cross section, diagonal conducting wall configuration operating in the supersonic mixed impulse-reaction mode with an inlet Mach number of 1.59 and with a uniform magnetic field of four Tesla throughout were selected. The design operating conditions and performance are presented, and a design analysis is included. (WHK)

Not Available

1977-03-01T23:59:59.000Z

366

Conceptual Design Plan SM-43 Replacement Project  

SciTech Connect

The Los Alamos National Laboratory Conceptual Design Plan for the SM-43 Replacement Project outlines plans for replacing the SM-43 Administration Building. Topics include the reasons that replacement is considered a necessity; the roles of the various project sponsors; and descriptions of the proposed site and facilities. Also covered in this proposal is preliminary information on the project schedule, cost estimates, acquisition strategy, risk assessment, NEPA strategy, safety strategy, and safeguards and security. Spreadsheets provide further detail on space requirements, project schedules, and cost estimates.

University of California, Los Alamos National Laboratory, SCC Project Office

2000-11-01T23:59:59.000Z

367

Controlled air incinerator conceptual design study  

SciTech Connect

This report presents a conceptual design study for a controlled air incinerator facility for incineration of low level combustible waste at Three Mile Island Unit 2 (TMI-2). The facility design is based on the use of a Helix Process Systems controlled air incinerator. Cost estimates and associated engineering, procurement, and construction schedules are also provided. The cost estimates and schedules are presented for two incinerator facility designs, one with provisions for waste ash solidification, the other with provisions for packaging the waste ash for transport to an undefined location.

Not Available

1982-01-01T23:59:59.000Z

368

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

369

Multidimensional Data Model Research for Data Mart Based Analysis System of Drilling Fluid  

Science Conference Proceedings (OSTI)

For the sake of complex analysis requirements of drilling fluid analysis system, this paper proposes a multidimensional data model and implement the solution of data mart due to the analyzing weaknesses of conventional information system. Since the database ... Keywords: drilling fluid, Data Mart, Multidimensional Data Model, Multi-Analysis, Fact Tables, Dimension Tables

Li Jian; Wang Bing; Xu Bihua; Liang Dachun

2010-12-01T23:59:59.000Z

370

Non-markovian analysis for model driven engineering of real-time software  

Science Conference Proceedings (OSTI)

Quantitative evaluation of models with stochastic timings can decisively support schedulability analysis and performance engineering of real-time concurrent systems. These tasks require modeling formalisms and solution techniques that can encompass stochastic ... Keywords: model driven development, non-markovian stochastic analysis, real-time systems, software performance engineering

Laura Carnevali; Marco Paolieri; Alessandro Santoni; Enrico Vicario

2013-04-01T23:59:59.000Z

371

TTP 289A Syllabus: Energy Modeling for Policy Analysis TTP 289A-002  

E-Print Network (OSTI)

TTP 289A Syllabus: Energy Modeling for Policy Analysis 1 TTP 289A-002 (CRN81927) Energy Modeling for Policy Analysis Quarter: Winter 2014 When: T/Th: 2:10-4 pm and Policy, will also provide a portion of the lectures, specifically on modeling energy infrastructure

California at Davis, University of

372

Comparative analysis of models integrating synoptic forecast data into potato late blight risk estimate systems  

Science Conference Proceedings (OSTI)

Determinacy analysis, logistic regression, discriminant analysis and neural network models were compared for their accuracy in 5-day (120h) forecasts of daily potato late blight risk according to a modified-Wallin disease severity model. For 12 locations ... Keywords: Expert systems, Forecasting, Neural network models, Risk mitigation

Kathleen M. Baker; William W. Kirk

2007-05-01T23:59:59.000Z

373

A fresh look at cost estimation, process models and risk analysis”, EDSER-1  

E-Print Network (OSTI)

Reliable cost estimation is indispensable for industrial software development. A detailed analysis shows why the existing cost models are unreliable. Cost estimation should integrate software process modelling and risk analysis. A novel approach based on probability theory is proposed. A probabilistic cost model could provide a solid basis for cost-benefit analyses. 1

Frank Padberg

1999-01-01T23:59:59.000Z

374

Advances in the identification of transfer function models using Prony analysis  

SciTech Connect

This paper further advances the usefulness and understanding of Prony analysis as a tool for identification of models. The presented results allow more generality in the assumed model formulation. In addition, a comparison is made between Prony analysis and autoregressive moving-average (ARMA) modeling. Special attention is given to system conditions often encountered with power system electromechanical dynamics.

Trudnowski, D.J.; Donnelly, M.K. [Pacific Northwest Lab., Richland, WA (US); Hauer, J.F. [Bonneville Power Administration, Portland, OR (US)

1993-06-01T23:59:59.000Z

375

Update 4 to: A Dispersion Modeling Analysis of Downwash from Mirant's  

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

4 to: A Dispersion Modeling Analysis of Downwash from 4 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Unit 4 Emissions at Maximum and Minimum Loads Update 4 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Unit 4 Emissions at Maximum and Minimum Loads Docket No. EO-05-01. This report describes dispersion modeling performed for Unit 4 at Mirant's Potomac River Generating Station. The modeling was performed according to the Protocol approved by the Virginia Deparment of Environmental Quality. The purpose of the modeling was to demonstrate that Unit 4, operating alone under minimum and maximum loads will not cause or contribute to exceedances of the National Ambient Air Quality Standards (NAAQS). Update 4 to: A Dispersion Modeling Analysis of Downwash from Mirant's

376

Update 3 to: A Dispersion Modeling Analysis of Downwash from Mirant's  

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

3 to: A Dispersion Modeling Analysis of Downwash from 3 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Units 1 and 4 Together Update 3 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Units 1 and 4 Together Docket No. EO-05-01. Docket No. EO-05-01. This report describes dispersion modeling performed for Units 1 and 4 at Mirant's Potomac River Generating Station. The purpose of the modeling was to demonstrate that Units 1 and 4, operating together under specific loads and during certain periods in a calendar day will not cause or contribut to excceedences of the National Ambient Air Quality Standards (NAAQS). Update 2 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Units 1 and 4 Together

377

Development and application of a conceptual approach for defining high-level waste  

SciTech Connect

This paper presents a conceptual approach to defining high-level radioactive waste (HLW) and a preliminary quantitative definition obtained from an example implementation of the conceptual approach. On the basis of the description of HLW in the Nuclear Waste Policy Act of 1982, we have developed a conceptual model in which HLW has two attributes: HLW is (1) highly radioactive and (2) requires permanent isolation via deep geologic disposal. This conceptual model results in a two-dimensional waste categorization system in which one axis, related to ''requires permanent isolation,'' is associated with long-term risks from waste disposal and the other axis, related to ''highly radioactive,'' is associated with short-term risks from waste management and operations; this system also leads to the specification of categories of wastes that are not HLW. Implementation of the conceptual model for defining HLW was based primarily on health and safety considerations. Wastes requiring permanent isolation via deep geologic disposal were defined by estimating the maximum concentrations of radionuclides that would be acceptable for disposal using the next-best technology, i.e., greater confinement disposal (GCD) via intermediate-depth burial or engineered surface structures. Wastes that are highly radioactive were defined by adopting heat generation rate as the appropriate measure and examining levels of decay heat that necessitate special methods to control risks from operations in a variety of nuclear fuel-cycle situations. We determined that wastes having a power density >200 W/m/sup 3/ should be considered highly radioactive. Thus, in the example implementation, the combination of maximum concentrations of long-lived radionuclides that are acceptable for GCD and a power density of 200 W/m/sup 3/ provides boundaries for defining wastes that are HLW.

Croff, A.G.; Forsberg, C.W.; Kocher, D.C.; Cohen, J.J.; Smith, C.F.; Miller, D.E.

1986-01-01T23:59:59.000Z

378

Microsoft Word - Conceptual Design Report Final.doc  

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

Battelle Energy Alliance Conceptual Design for a Large- Diameter Natural Gas Pipeline Inspection Platform Derek Wadsworth Matthew Anderson Douglas Few Allen Anderson James...

379

Multidisciplinary Conceptual Design of a Transonic High Pressure Compressor.  

E-Print Network (OSTI)

??The aim of this work is to develop a systematic approach for multidisciplinary high pressure transonic axial compressor conceptual design. Several aspects have to be… (more)

Ersavas, Funda

2011-01-01T23:59:59.000Z

380

Analysis of inverter models and harmonic propagation. Part III. Transient processes in inverter models  

SciTech Connect

Part III of a three part study presents the theoretical analysis and the experimental verification of transient processes that arise in the photovoltaic power system during its normal commutational operations. A general description of the transient processes problem and the method of analysis is presented. The transient processes in the inverter model with an inductive filter are analyzed for both the discontinuous and the continuous currents on the dc side of the inverter, and the problem of transient processes due to the change in illumination level is discussed. Transient processes in the inverter model with capacitive filter are analyzed with special emphasis on the process that arises in the photovoltaic power system immediately after the first ignition of the thyristors. The influence of the operating point of the solar cell array on the transient process is discussed. A sequence for optimal operations is recommended. Part I of the study (SAND 7040/1) contains a detailed description of the microcomputer based simulator that represents the output characteristics of the five commercially available types of solar cell arrays under different environmental conditions, and Part II (SAND 7040/2) describes the harmonics in the photovoltaic power system.

Slonim, M.A.; Stanek, E.K.

1984-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Dynamic social network analysis using latent space models  

Science Conference Proceedings (OSTI)

This paper explores two aspects of social network modeling. First, we generalize a successful static model of relationships into a dynamic model that accounts for friendships drifting over time. Second, we show how to make it tractable to learn such ...

Purnamrita Sarkar; Andrew W. Moore

2005-12-01T23:59:59.000Z

382

Applied Dynamic Analysis of the Global Economy (ADAGE) Model | Open Energy  

Open Energy Info (EERE)

Applied Dynamic Analysis of the Global Economy (ADAGE) Model Applied Dynamic Analysis of the Global Economy (ADAGE) Model 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: Applied Dynamic Analysis of the Global Economy (ADAGE) Model Agency/Company /Organization: Research Triangle Institute Sector: Climate, Energy Topics: Co-benefits assessment, - Macroeconomic, Pathways analysis Resource Type: Software/modeling tools User Interface: Desktop Application Complexity/Ease of Use: Advanced Website: www.rti.org/page.cfm?objectid=DDC06637-7973-4B0F-AC46B3C69E09ADA9 RelatedTo: Electricity Markets Analysis (EMA) Model Cost: Paid Applied Dynamic Analysis of the Global Economy (ADAGE) Model Screenshot

383

Sensitivity Analysis Using an Adjoint of the PSU-NCAR Mesoseale Model  

Science Conference Proceedings (OSTI)

An adjoint of the Pennsylvania State University-National Center for Atmospheric Research (PSU-NCAR) Mesoscale Model has been developed for use in sensitivity analysis following Cacuci. Sensitivity analysis is defined as the determination of the ...

Ronald M. Errico; Tomislava Vukicevic

1992-08-01T23:59:59.000Z

384

Risk analysis of nuclear safeguards regulations. [Aggregated Systems Model (ASM)  

Science Conference Proceedings (OSTI)

The Aggregated Systems Model (ASM), a probabilisitic risk analysis tool for nuclear safeguards, was applied to determine benefits and costs of proposed amendments to NRC regulations governing nuclear material control and accounting systems. The objective of the amendments was to improve the ability to detect insiders attempting to steal large quantities of special nuclear material (SNM). Insider threats range from likely events with minor consequences to unlikely events with catastrophic consequences. Moreover, establishing safeguards regulations is complicated by uncertainties in threats, safeguards performance, and consequences, and by the subjective judgments and difficult trade-offs between risks and safeguards costs. The ASM systematically incorporates these factors in a comprehensive, analytical framework. The ASM was used to evaluate the effectiveness of current safeguards and to quantify the risk of SNM theft. Various modifications designed to meet the objectives of the proposed amendments to reduce that risk were analyzed. Safeguards effectiveness was judged in terms of the probability of detecting and preventing theft, the expected time to detection, and the expected quantity of SNM diverted in a year. Data were gathered in tours and interviews at NRC-licensed facilities. The assessment at each facility was begun by carefully selecting scenarios representing the range of potential insider threats. A team of analysts and facility managers assigned probabilities for detection and prevention events in each scenario. Using the ASM we computed the measures of system effectiveness and identified cost-effective safeguards modifications that met the objectives of the proposed amendments.

Al-Ayat, R.A.; Altman, W.D.; Judd, B.R.

1982-06-01T23:59:59.000Z

385

Integration of facility modeling capabilities for nuclear nonproliferation analysis  

Science Conference Proceedings (OSTI)

Developing automated methods for data collection and analysis that can facilitate nuclearnonproliferation assessment is an important research area with significant consequences for the effective global deployment of nuclear energy. Facilitymodeling that can integrate and interpret observations collected from monitored facilities in order to ascertain their functional details will be a critical element of these methods. Although improvements are continually sought, existing facilitymodeling tools can characterize all aspects of reactor operations and the majority of nuclear fuel cycle processing steps, and include algorithms for data processing and interpretation. Assessing nonproliferation status is challenging because observations can come from many sources, including local and remote sensors that monitor facility operations, as well as open sources that provide specific business information about the monitored facilities, and can be of many different types. Although many current facility models are capable of analyzing large amounts of information, they have not been integrated in an analyst-friendly manner. This paper addresses some of these facilitymodelingcapabilities and illustrates how they could be integrated and utilized for nonproliferationanalysis. The inverse problem of inferring facility conditions based on collected observations is described, along with a proposed architecture and computer framework for utilizing facilitymodeling tools. After considering a representative sampling of key facilitymodelingcapabilities, the proposed integration framework is illustrated with several examples.

Burr, Tom [Los Alamos National Laboratory (LANL); Gorensek, M. B. [Savannah River National Laboratory (SRNL); Krebs, John [Argonne National Laboratory (ANL); Kress, Reid L [ORNL; Lamberti, Vincent [Y-12 National Security Complex; Schoenwald, David [ORNL; Ward, Richard C [ORNL

2012-01-01T23:59:59.000Z

386

DOE Hydrogen Analysis Repository: Automotive System Cost Model...  

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

Automotive System Cost Model (ASCM) Project Summary Full Title: Automotive System Cost Model (ASCM) Project ID: 118 Principal Investigator: Sujit Das Purpose Estimate current and...

387

DOE Hydrogen Analysis Repository: MetaNET Model  

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

of demands, resources, and market modules that has primarily been used for long term electricity market equilibrium modeling. METANET is a perfect foresight model and assumes...

388

Modeling and Analysis of CSP Systems (Fact Sheet), Thermal Systems...  

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

The models can also help analysts assess the potential market penetration and economic impact of CSP under different policy and deployment scenarios. The Solar Advisor Model (SAM)...

389

An ontological analysis of the notion of community in the RM-ODP enterprise language  

Science Conference Proceedings (OSTI)

In our past work, we have shown that a number of theories from conceptual modeling and ontological analysis can be used to clarify the definitions of role-related and goal-related concepts in the RM-ODP [1,2]. This paper builds up on our earlier efforts ... Keywords: Community, Enterprise language, Enterprise viewpoint, Foundational ontology, Social concepts

JoãO Paulo A. Almeida; Giancarlo Guizzardi

2013-03-01T23:59:59.000Z

390

Methodology for fault detection and diagnostics in an ocean turbine using vibration analysis and modeling.  

E-Print Network (OSTI)

??This thesis describes a methodology for mechanical fault detection and diagnostics in an ocean turbine using vibration analysis and modeling. This methodology relies on the… (more)

Mjit, Mustapha.

2009-01-01T23:59:59.000Z

391

Conceptual designs for modular OTEC SKSS. Final report  

DOE Green Energy (OSTI)

This volume presents the results of the first phase of the Station Keeping Subsystem (SKSS) design study for 40 MW/sub e/ capacity Modular Experiment OTEC Platforms. The objectives of the study were: (1) establishment of basic design requirements; (2) verification of technical feasibility of SKSS designs; (3) identification of merits and demerits; (4) estimates of sizes for major components; (5) estimates of life cycle costs; (6) deployment scenarios and time/cost/risk assessments; (7) maintenance/repair and replacement scenarios; (8) identifications of interface with other OTEC subsystems; (9) recommendations for and major problems in preliminary design; and (10) applicability of concepts to commercial plant SKSS designs. A brief site suitability study was performed with the objective of determining the best possible location at the Punta Tuna (Puerto Rico) site from the standpoint of anchoring. This involved studying the vicinity of the initial location in relation to the prevailing bottom slopes and distances from shore. All subsequent studies were performed for the final selected site. The two baseline OTEC platforms were the APL BARGE and the G and C SPAR. The results of the study are presented in detail. The overall objective of developing two conceptual designs for each of the two baseline OTEC platforms has been accomplished. Specifically: (1) a methodology was developed for conceptual designs and followed to the extent possible. At this stage, a full reliability/performance/optimization analysis based on a probabilistic approach was not used due to the numerous SKSS candidates to be evaluated. A deterministic approach was used. (2) For both of the two baseline platforms, the APL BARGE and the G and C SPAR, all possible SKSS candidate concepts were considered and matrices of SKSS concepts were developed.

None

1980-02-29T23:59:59.000Z

392

Modeling and Analysis for Control of Reactant and Water  

E-Print Network (OSTI)

conditions due to the inclusion of compressibility, we employ the simplifying evaporation/condensation model

Stefanopoulou, Anna

393

A multidimensional data model and OLAP analysis for agricultural production  

Science Conference Proceedings (OSTI)

In the paper a multidimensional data model called CULTEH is built. In the model are defined the dimensions, the hierarchies and the facts. Based on this model an OLAP cube called CUBECTH is built. The OLAP cube accepts queries on several dimensions and ... Keywords: OLAP operations, agricultural production, data cube, multidimensional data model, on-line analytical processing (OLAP)

Constanta Zoie Radulescu; Marius Radulescu; Adrian Turek Rahoveanu

2009-03-01T23:59:59.000Z

394

A Linear Stochastic Dynamical Model of ENSO. Part II: Analysis  

Science Conference Proceedings (OSTI)

In this study the behavior of a linear, intermediate model of ENSO is examined under stochastic forcing. The model was developed in a companion paper (Part I) and is derived from the Zebiak–Cane ENSO model. Four variants of the model are used ...

C. J. Thompson; D. S. Battisti

2001-02-01T23:59:59.000Z

395

The ICF, Inc. coal and electric utilities model : an analysis and evaluation  

E-Print Network (OSTI)

v.1. The Electric Power Research Institute (EPRI) is sponsoring a series of evaluations of important energy policy and electric utility industry models by the MIT Energy Model Analysis Program (EMAP). The subject of this ...

Wood, David O.

1981-01-01T23:59:59.000Z

396

Validation and Sensitivity Analysis of a New Atmosphere–Soil–Vegetation Model  

Science Conference Proceedings (OSTI)

This paper describes details, validation, and sensitivity analysis of a new atmosphere–soil–vegetation model. The model consists of one-dimensional multilayer submodels for atmosphere, soil, and vegetation and radiation schemes for the ...

Haruyasu Nagai

2002-02-01T23:59:59.000Z

397

Status Report on Modeling and Analysis of Small Modular Reactor Economics  

SciTech Connect

This report describes the work performed to generate the model for SMR economic analysis. The model is based on the G4-ECONS calculation tool developed for the Generation IV International Forum (GIF).

Harrison, Thomas J [ORNL; Hale, Richard Edward [ORNL; Moses, Rebecca J [ORNL

2013-04-01T23:59:59.000Z

398

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

Science Conference Proceedings (OSTI)

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

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

2012-07-01T23:59:59.000Z

399

Enhanced flux balance analysis to model metabolic networks  

Science Conference Proceedings (OSTI)

Flux Balance Analysis (FBA) is a widely used technique to predict rates of reactions in metabolic networks in cells under steady state using only stoichiometric information about the reactions. In this work, we introduce Enhanced Flux Balance Analysis ...

Nishanth Ulhas Nair; Navin Goyal; Nagasuma R. Chandra

2010-08-01T23:59:59.000Z

400

COMFAR III: Computer Model for Feasibility Analysis and Reporting | Open  

Open Energy Info (EERE)

COMFAR III: Computer Model for Feasibility Analysis and Reporting COMFAR III: Computer Model for Feasibility Analysis and Reporting Jump to: navigation, search Tool Summary Name: COMFAR III: Computer Model for Feasibility Analysis and Reporting Agency/Company /Organization: United Nations Industrial Development Organization Focus Area: Industry Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.unido.org/index.php?id=o3470 Language: "Arabic, Chinese, English, French, German, Japanese, Portuguese, Russian, Spanish; Castilian" is not in the list of possible values (Abkhazian, Achinese, Acoli, Adangme, Adyghe; Adygei, Afar, Afrihili, Afrikaans, Afro-Asiatic languages, Ainu, Akan, Akkadian, Albanian, Aleut, Algonquian languages, Altaic languages, Amharic, Angika, Apache languages, Arabic, Aragonese, Arapaho, Arawak, Armenian, Aromanian; Arumanian; Macedo-Romanian, Artificial languages, Assamese, Asturian; Bable; Leonese; Asturleonese, Athapascan languages, Australian languages, Austronesian languages, Avaric, Avestan, Awadhi, Aymara, Azerbaijani, Balinese, Baltic languages, Baluchi, Bambara, Bamileke languages, Banda languages, Bantu (Other), Basa, Bashkir, Basque, Batak languages, Beja; Bedawiyet, Belarusian, Bemba, Bengali, Berber languages, Bhojpuri, Bihari languages, Bikol, Bini; Edo, Bislama, Blin; Bilin, Blissymbols; Blissymbolics; Bliss, Bosnian, Braj, Breton, Buginese, Bulgarian, Buriat, Burmese, Caddo, Catalan; Valencian, Caucasian languages, Cebuano, Celtic languages, Central American Indian languages, Central Khmer, Chagatai, Chamic languages, Chamorro, Chechen, Cherokee, Cheyenne, Chibcha, Chichewa; Chewa; Nyanja, Chinese, Chinook jargon, Chipewyan; Dene Suline, Choctaw, Chuukese, Chuvash, Classical Newari; Old Newari; Classical Nepal Bhasa, Classical Syriac, Coptic, Cornish, Corsican, Cree, Creek, Creoles and pidgins , Crimean Tatar; Crimean Turkish, Croatian, Cushitic languages, Czech, Dakota, Danish, Dargwa, Delaware, Dinka, Divehi; Dhivehi; Maldivian, Dogri, Dogrib, Dravidian languages, Duala, Dutch; Flemish, Dyula, Dzongkha, Eastern Frisian, Efik, Egyptian (Ancient), Ekajuk, Elamite, English, Erzya, Esperanto, Estonian, Ewe, Ewondo, Fang, Fanti, Faroese, Fijian, Filipino; Pilipino, Finnish, Finno-Ugrian languages, Fon, French, Friulian, Fulah, Ga, Gaelic; Scottish Gaelic, Galibi Carib, Galician, Ganda, Gayo, Gbaya, Geez, Georgian, German, Germanic languages, Gilbertese, Gondi, Gorontalo, Gothic, Grebo, Greek, Modern, Guarani, Gujarati, Gwich'in, Haida, Haitian; Haitian Creole, Hausa, Hawaiian, Hebrew, Herero, Hiligaynon, Himachali languages; Western Pahari languages, Hindi, Hiri Motu, Hittite, Hmong; Mong, Hungarian, Hupa, Iban, Icelandic, Ido, Igbo, Ijo languages, Iloko, Inari Sami, Indic languages, Indo-European languages, Indonesian, Ingush, Interlingue; Occidental, Inuktitut, Inupiaq, Iranian languages, Irish, Iroquoian languages, Italian, Japanese, Javanese, Judeo-Arabic, Judeo-Persian, Kabardian, Kabyle, Kachin; Jingpho, Kalaallisut; Greenlandic, Kalmyk; Oirat, Kamba, Kannada, Kanuri, Kara-Kalpak, Karachay-Balkar, Karelian, Karen languages, Kashmiri, Kashubian, Kawi, Kazakh, Khasi, Khoisan languages, Khotanese; Sakan, Kikuyu; Gikuyu, Kimbundu, Kinyarwanda, Kirghiz; Kyrgyz, Klingon; tlhIngan-Hol, Komi, Kongo, Konkani, Korean, Kosraean, Kpelle, Kru languages, Kuanyama; Kwanyama, Kumyk, Kurdish, Kurukh, Kutenai, Ladino, Lahnda, Lamba, Land Dayak languages, Lao, Latin, Latvian, Lezghian, Limburgan; Limburger; Limburgish, Lingala, Lithuanian, Lojban, Lower Sorbian, Lozi, Luba-Katanga, Luba-Lulua, Luiseno, Lule Sami, Lunda, Luo (Kenya and Tanzania), Lushai, Luxembourgish; Letzeburgesch, Macedonian, Madurese, Magahi, Maithili, Makasar, Malagasy, Malay, Malayalam, Maltese, Manchu, Mandar, Mandingo, Manipuri, Manobo languages, Manx, Maori, Mapudungun; Mapuche, Marathi, Mari, Marshallese, Marwari, Masai, Mayan languages, Mende, Mi'kmaq; Micmac, Minangkabau, Mirandese, Mohawk, Moksha, Mon-Khmer languages, Mongo, Mongolian, Mossi, Multiple languages, Munda languages, N'Ko, Nahuatl languages, Nauru, Navajo; Navaho, Ndebele, North; North Ndebele, Ndebele, South; South Ndebele, Ndonga, Neapolitan, Nepal Bhasa; Newari, Nepali, Nias, Niger-Kordofanian languages, Nilo-Saharan languages, Niuean, North American Indian languages, Northern Frisian, Northern Sami, Norwegian, Nubian languages, Nyamwezi, Nyankole, Nyoro, Nzima, Occitan (post 1500); Provençal, Ojibwa, Oriya, Oromo, Osage, Ossetian; Ossetic, Otomian languages, Pahlavi, Palauan, Pali, Pampanga; Kapampangan, Pangasinan, Panjabi; Punjabi, Papiamento, Papuan languages, Pedi; Sepedi; Northern Sotho, Persian, Philippine languages, Phoenician, Pohnpeian, Polish, Portuguese, Prakrit languages, Pushto; Pashto, Quechua, Rajasthani, Rapanui, Rarotongan; Cook Islands Maori, Romance languages, Romanian; Moldavian; Moldovan, Romansh, Romany, Rundi, Russian, Salishan languages, Samaritan Aramaic, Sami languages, Samoan, Sandawe, Sango, Sanskrit, Santali, Sardinian, Sasak, Scots, Selkup, Semitic languages, Serbian, Serer, Shan, Shona, Sichuan Yi; Nuosu, Sicilian, Sidamo, Sign Languages, Siksika, Sindhi, Sinhala; Sinhalese, Sino-Tibetan languages, Siouan languages, Skolt Sami, Slave (Athapascan), Slavic languages, Slovak, Slovenian, Sogdian, Somali, Songhai languages, Soninke, Sorbian languages, Sotho, Southern, South American Indian (Other), Southern Altai, Southern Sami, Spanish; Castilian, Sranan Tongo, Sukuma, Sumerian, Sundanese, Susu, Swahili, Swati, Swedish, Swiss German; Alemannic; Alsatian, Syriac, Tagalog, Tahitian, Tai languages, Tajik, Tamashek, Tamil, Tatar, Telugu, Tereno, Tetum, Thai, Tibetan, Tigre, Tigrinya, Timne, Tiv, Tlingit, Tok Pisin, Tokelau, Tonga (Nyasa), Tonga (Tonga Islands), Tsimshian, Tsonga, Tswana, Tumbuka, Tupi languages, Turkish, Turkmen, Tuvalu, Tuvinian, Twi, Udmurt, Ugaritic, Uighur; Uyghur, Ukrainian, Umbundu, Uncoded languages, Undetermined, Upper Sorbian, Urdu, Uzbek, Vai, Venda, Vietnamese, Volapük, Votic, Wakashan languages, Walamo, Walloon, Waray, Washo, Welsh, Western Frisian, Wolof, Xhosa, Yakut, Yao, Yapese, Yiddish, Yoruba, Yupik languages, Zande languages, Zapotec, Zaza; Dimili; Dimli; Kirdki; Kirmanjki; Zazaki, Zenaga, Zhuang; Chuang, Zulu, Zuni) for this property.

Note: This page contains sample records for the topic "analysis conceptual model" 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

Underground Test Area Subproject Phase I Data Analysis Task. Volume VII - Tritium Transport Model Documentation Package  

SciTech Connect

Volume VII of the documentation for the Phase I Data Analysis Task performed in support of the current Regional Flow Model, Transport Model, and Risk Assessment for the Nevada Test Site Underground Test Area Subproject contains the tritium transport model documentation. Because of the size and complexity of the model area, a considerable quantity of data was collected and analyzed in support of the modeling efforts. The data analysis task was consequently broken into eight subtasks, and descriptions of each subtask's activities are contained in one of the eight volumes that comprise the Phase I Data Analysis Documentation.

None

1996-12-01T23:59:59.000Z

402

A multidimensional data model and OLAP analysis for soil physical characteristics  

Science Conference Proceedings (OSTI)

The paper describes the construction of a multidimensional data model intended for the analysis of soil physical properties. The data from the model are provided by two agricultural soil/land databases. Based on the multidimensional data model we build ... Keywords: OLAP operations, data cube, land use, multidimensional data model, on-line analytical processing (OLAP), soil physical properties

Constanta Zoie Radulescu; Marius Radulescu; Virgil Vlad; Dumitru Marian Motelica

2008-06-01T23:59:59.000Z

403

Empirical Models of End-User Network Behavior from NETI@home Data Analysis  

Science Conference Proceedings (OSTI)

The simulation of computer networks requires accurate models of user behavior. To this end, we present empirical models of end-user network traffic derived from the analysis of NETI@home (NETwork Intelligence at home) data. There are two forms of models ... Keywords: internet measurement, network traffic models, simulation

Charles R Simpson, Jr; Dheeraj Reddy; George F Riley

2008-10-01T23:59:59.000Z

404

EVAPORATIVE COOLING - CONCEPTUAL DESIGN FOR ATLAS SCT  

E-Print Network (OSTI)

The conceptual design of an evaporative two-phase flow cooling system for the ATLAS SCT detector is described, using perfluorinated propane (C3F8) as a coolant. Comparison with perfluorinated butane (C4F10) is made, although the detailed design is presented only for C3F8. The two-phase pressure drop and heat transfer coefficient are calculated in order to determine the dimensions of the cooling pipes and module contacts for the Barrel SCT. The region in which the flow is homogeneous is determined. The cooling cycle, pipework, compressor, heat exchangers and other main elements of the system are calculated in order to be able to discuss the system control, safety and reliability. Evaporative cooling appears to be substantially better than the binary ice system from the point of view of safety, reliability, detector thickness, heat transfer coefficient, cost and simplicity.

Niinikoski, T O

1998-01-01T23:59:59.000Z

405

Conceptual design of the FRIB cryogenic system  

SciTech Connect

The Facility for Rare Isotope Beams (FRIB) is a new nuclear science facility funded by the DOE Office of Science and Michigan State University (MSU). FRIB is currently under design and will be located on the MSU campus. The centerpiece of FRIB is a heavy ion linac utilizing superconducting RF cavities and magnets which in turn requires a large cryogenic system. The cryogenic system consists of a commercially produced helium refrigeration plant and an extensive distribution system. Superconducting components will operate at both 4.5 K and 2 K. This paper describes the conceptual design of the system including the expected heat loads and operating modes. The strategy for procuring a custom turnkey helium refrigeration plant from industry, an overview of the distribution system, the interface of the cryogenic system to the conventional facilities and the project schedule are also described.

Weisend II, J G; Bull, Brad; Burns, Chris; Fila, Adam; Kelley, Patrick; Laumer, Helmut; Mann, Thomas; McCartney, Allyn; Jones, S

2012-06-01T23:59:59.000Z

406

Conceptual design study of spheromak reactors  

SciTech Connect

Preliminary design studies are carried out for a spheromak fusion reactor. Simplified circuit theory is applied to obtain characteristic relations among various parameters of the spheromak configuration for an aspect ratio A greater than or equal to 1.6. These relations are used to calculate the parameters for the conceptual designs of three types of fusion reactor: (1) DT two-component, (2) DT ignited, and, (3) catalyzed DD ignited reactors. With a total wall loading of approx. 4 MWm/sup -2/, it is found that edge magnetic fields of only approx. 4T (DT) and approx. 9T (cat. DD) are required for ignited reactors of one-meter plasma (minor) radius with output powers in the gigawatt range. Assessment of various methods of generating reactor-grade spheromak plasmas is discussed briefly.

Katsurai, M.; Yamada, M.

1980-07-01T23:59:59.000Z

407

Hot conditioning equipment conceptual design report  

SciTech Connect

This report documents the conceptual design of the Hot Conditioning System Equipment. The Hot conditioning System will consist of two separate designs: the Hot Conditioning System Equipment; and the Hot Conditioning System Annex. The Hot Conditioning System Equipment Design includes the equipment such as ovens, vacuum pumps, inert gas delivery systems, etc.necessary to condition spent nuclear fuel currently in storage in the K Basins of the Hanford Site. The Hot Conditioning System Annex consists of the facility of house the Hot Conditioning System. The Hot Conditioning System will be housed in an annex to the Canister Storage Building. The Hot Conditioning System will consist of pits in the floor which contain ovens in which the spent nuclear will be conditioned prior to interim storage.

Bradshaw, F.W., Westinghouse Hanford

1996-08-06T23:59:59.000Z

408

Software Development, Modeling, and Analysis: We're Developing Advanced Design Tools to Support the Wind Industry with "State-of-the-Art" Analysis Capability (Fact Sheet)  

SciTech Connect

This fact sheet provides an overview of the software development, modeling, and analysis for wind turbine performance, loads, and stabiluty analysis.

2010-01-01T23:59:59.000Z

409

Software Development, Modeling, and Analysis: We're Developing Advanced Design Tools to Support the Wind Industry with "State-of-the-Art" Analysis Capability (Fact Sheet)  

DOE Green Energy (OSTI)

This fact sheet provides an overview of the software development, modeling, and analysis for wind turbine performance, loads, and stabiluty analysis.

Not Available

2010-01-01T23:59:59.000Z

410

Conceptualizations for cleaning OTEC heat exchangers  

DOE Green Energy (OSTI)

A critical operating aspect of Ocean Thermal Energy Conversion (OTEC) plants is the maintenance of clean surfaces on the seawater-side of the heat exchangers. The objective of this program was to assess the state of the art of biofouling control techniques and to evaluate the potential of these existing methods for solving the biofouling problems in the OTEC system. The first task of the program involved an in-depth review and discussion of various fouling control methods including water treatment, surface conditioning, and cleaning techniques. The methods considered applicable to OTEC were identified. This volume summarizes the second task of the program. The compatibility of the various cleaning and fouling control techniques with the different proposed heat exchanger designs and materials are discussed. Also provided are conceptual illustrations for adapting and incorporating the methods into an OTEC power plant. These conceptual designs suggest means for overcoming some of the shortcomings of the techniques which are considered suitable, however, detailed designs of the modified systems are beyond the scope of this report. Chlorination, chemical cleaning, Amertap recirculating sponge rubber balls, and MAN flow-driven brushes are the methods considered applicable for tubular heat exchangers with seawater inside the tubes. Water jets are suggested for the open-cycle and the ''trombone'' (Applied Physics Laboratory) heat exchanger designs. Although none of the methods are immediately applicable to OTEC in their present configuration, in several cases only minor developmental efforts should produce designs which can satisfy the stringent OTEC cleanliness requirements. Further research and development appear warranted for a number of other methods which indicate promise for long-range applicability. Specific recommendations are included.

Rice, M.S.; Hagel, D.; Conn, A.F.

1978-09-01T23:59:59.000Z

411

Willamina Project Report : Indirect-Fired, Biomass-Fueled, Combined-Cycle, Gas Turbine Power Plant Using a Ceramic Heat Exchanger. Volume 1. Conceptual Plant Design and Analysis. Final report. [Contains Glossary  

SciTech Connect

A new technology for a wood-fueled electrical generation plant was evaluated. The proposed plant utilizes an indirectly fired gas turbine (IFGT) using a ceramic heat exchanger for high efficiency, due to its high temperature capability. The proposed plant utilizes a wood-fueled furnace with a ceramic heat exchanger to heat compressed air for a gas turbine. The configuration proposed is a combined cycle power plant that can produce 6 to 12 MW, depending upon the amount of wood used to supplementally fire a heat recovery steam generator (HRSG), which in turn powers a steam turbine. Drawings, specifications, and cost estimates based on a combined cycle analysis and wood-fired HRSG were developed. The total plant capital cost was estimated to be $13.1 million ($1640/kW). The heat rate for a 8-MW plant was calculated to be 10,965 Btu/kW when using wood residues with a 42% moisture content. Levelized electric energy costs were estimated to be 6.9 cents/kWh.

F.W. Braun Engineers.

1984-05-01T23:59:59.000Z

412

Conceptual navigation in knowledge management environments using NavCon  

Science Conference Proceedings (OSTI)

This article presents conceptual navigation and NavCon, an architecture that implements this navigation in World Wide Web pages. NavCon architecture makes use of ontology as metadata to contextualize user search for information. Based on ontologies, ... Keywords: Conceptual navigation, Context-based navigation, Knowledge management, Ontology, Semantic Web

Jose Renato Villela Dantas; Pedro Porfirio Muniz Farias

2010-07-01T23:59:59.000Z

413

Modeling aviation's global emissions, uncertainty analysis, and applications to policy  

E-Print Network (OSTI)

(cont.) fuel burn results below 3000 ft. For emissions, the emissions indices were the most influential uncertainties for the variance in model outputs. By employing the model, this thesis examined three policy options for ...

Lee, Joosung Joseph, 1974-

2005-01-01T23:59:59.000Z

414

Drought Analysis Based on a Marked Cluster Poisson Model  

Science Conference Proceedings (OSTI)

This paper presents an operational definition of drought events based on an “excess over threshold” approach applied on rainfall series and develops a stochastic model for describing droughts defined in that way. The model consists of a Poisson ...

Ana C. Cebrián; Jesús Abaurrea

2006-08-01T23:59:59.000Z

415

An Error Analysis of Atlantic Tropical Cyclone Track Guidance Models  

Science Conference Proceedings (OSTI)

Mean track forecast errors over the 6-yr period 1983–88 are compared for four tropical cyclone-track forecast models in use at the National Hurricane Center (NHC). The model types represented are statistical, statistical-dynamical, barctropic-...

Mark Demaria; Miles B. Lawrence; James T. Kroll

1990-03-01T23:59:59.000Z

416

An Interpretable Stroke Prediction Model using Rules and Bayesian Analysis  

E-Print Network (OSTI)

We aim to produce predictive models that are not only accurate, but are also interpretable to human experts. Our models are decision lists, which consist of a series of if...then... statements (for example, if high blood ...

Letham, Benjamin

2013-11-15T23:59:59.000Z

417

Optioned Portfolio Selection: Models and Analysis Jianfeng LIANG  

E-Print Network (OSTI)

and Oldenkamp [8] proposed a linear programming model with a given level of guaranteed return. The so

Zhang, Shuzhong

418

Advanced turbine systems program conceptual design and product development. Quarterly report, August--October 1994  

SciTech Connect

This is a quarterly report on the Westinghouse Electric Corporation Advanced Turbine Systems Program--conceptual design and product development. The topics of the report include the management plan, National Energy Policy Act, selection of natural gas-fired advanced turbine systems, selection of coal-fired advanced turbine systems, market study, systems definition and analysis, design and test of critical components, and plans for the next reporting period.

1994-12-01T23:59:59.000Z

419

Analysis Model for Domestic Hot Water Distribution Systems: Preprint  

DOE Green Energy (OSTI)

A thermal model was developed to estimate the energy losses from prototypical domestic hot water (DHW) distribution systems for homes. The developed model, using the TRNSYS simulation software, allows researchers and designers to better evaluate the performance of hot water distribution systems in homes. Modeling results were compared with past experimental study results and showed good agreement.

Maguire, J.; Krarti, M.; Fang, X.

2011-11-01T23:59:59.000Z

420

Hydrogen Technology Analysis: H2A Production Model Update (Presentation)  

DOE Green Energy (OSTI)

This presentation by Todd Ramsden at the 2007 DOE Hydrogen Program Annual Merit Review Meeting provides information about NREL's hydrogen technology analysis activities.

Ramsden, T.

2007-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "analysis conceptual model" 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

Analysis & Projections - Models & Documentation - U.S. Energy...  

Annual Energy Outlook 2012 (EIA)

U.S. Energy Information Administration - EIA - Independent Statistics and Analysis Sources & Uses Petroleum & Other Liquids Crude oil, gasoline, heating oil, diesel, propane, and...

422

H2A Delivery Components Model and Analysis  

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

- Replacement capital includes for some components H2A Delivery Component Economic Analysis * The economic results presented assume specific scenario - Scenario refers to...

423

Bayesian Analysis in Applications of Hierarchical Models: Issues and Methods  

E-Print Network (OSTI)

A. S. Smith (Eds. ), Bayesian statistics 4 (pp. 336-338).Smith, A. F. (1993). Bayesian inference for generalizedat UCLA on May 23, 2011 Bayesian Analysis for Hierarchical

Michael Seltzer; Wing H. Wong; Anthony S. Bryk

2011-01-01T23:59:59.000Z

424

Enhanced oil recovery data base analysis by simplified predictive models  

Science Conference Proceedings (OSTI)

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

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

1982-11-01T23:59:59.000Z

425

Evaluating maintenance policies by quantitative modeling and analysis Enrico Zio1,2,*  

E-Print Network (OSTI)

. It is shown that modeling and analysis provide information useful for setting a maintenance policy. 1 of the energy market, which has forced the producers to be more competitive by reacting promptly and reliablyEvaluating maintenance policies by quantitative modeling and analysis Enrico Zio1,2,* , Michele

Paris-Sud XI, Université de

426

Original article: Overview of analytical models of permanent magnet electrical machines for analysis and design purposes  

Science Conference Proceedings (OSTI)

Generally, accurate modelling of electrical machines requires the use of finite-element method. However, FE analysis is too time consuming, especially at firsts design stages, from the point of view of engineers working in R&D departments in the electrical ... Keywords: Analytical modelling, Electromagnetic analysis, Permanent magnet machines

Huguette Tiegna, Yacine Amara, Georges Barakat

2013-04-01T23:59:59.000Z

427

Upper bound limit analysis model for FRP-reinforced masonry curved structures. Part II: Structural analyses  

Science Conference Proceedings (OSTI)

A homogenized full 3D limit analysis model for the evaluation of collapse loads of FRP-reinforced masonry vaults is presented. Six-noded rigid infinitely resistant wedges are used to model masonry. Three-noded rigid infinitely resistant triangles are ... Keywords: FRP-reinforcement, Homogenization, Kinematic approach, Limit analysis, Masonry, Vaults

Gabriele Milani; Enrico Milani; Antonio Tralli

2009-12-01T23:59:59.000Z

428

The diversity and molecular modelling analysis of B12-dependent and B12-independent glycerol dehydratases  

Science Conference Proceedings (OSTI)

To broaden our knowledge on the diversity of glycerol dehydratases, comprehensive sequence and molecular modelling analyses of these enzymes were performed. Our sequence analysis showed that B12-dependent and Bmodelling, sequence analysis, structure

Yuemin Liu; August A. Gallo; Rakesh K. Bajpai; Andrei Chistoserdov; Andrew T. Nelson; Leah N. Segura; Wu Xu

2010-01-01T23:59:59.000Z

429

Macro-System Model for Hydrogen Energy Systems Analysis in Transportation: Preprint  

DOE Green Energy (OSTI)

The Hydrogen Macro System Model (MSM) is a simulation tool that links existing and emerging hydrogen-related models to perform rapid, cross-cutting analysis. It allows analysis of the economics, primary energy-source requirements, and emissions of hydrogen production and delivery pathways.

Diakov, V.; Ruth, M.; Sa, T. J.; Goldsby, M. E.

2012-06-01T23:59:59.000Z

430

Computer analysis of the sensitivity of the integrated assessment model MERGE-5I  

Science Conference Proceedings (OSTI)

This paper reports on an application of a large-scale non-linear optimization model to the analysis of environmental problems. The authors present first results of the initial stage of the study, a sensitivity analysis of the model's input parameters. ...

Vyacheslav Maksimov; Leo Schrattenholzer; Yaroslav Minullin

2005-09-01T23:59:59.000Z

431

Fault Modeling and Analysis for Resistive Bridging Defects in a Synchronizer  

Science Conference Proceedings (OSTI)

This paper presents fault modeling and analysis for bridging defects in a synchronizer that is implemented by two D flip-flops. Bridging defects are injected into any two nodes of the synchronizer, and HSPICE is used to perform circuit analysis. The ... Keywords: Bridging defect, Fault modeling, Synchronizer

Hyoung-Kook Kim; Wen-Ben Jone; Laung-Terng Wang

2010-06-01T23:59:59.000Z

432

International Model for Policy Analysis of Agricultural Commodities and Trade (IMPACT): Model description  

E-Print Network (OSTI)

THE MODEL.................................................................................................................................7 I. Basic Methodology on Food............................................................................................. 7

Mark W. Rosegrant; Claudia Ringler; Siwa Msangi; Timothy B. Sulser; Tingju Zhu; Sarah A. Cline

2002-01-01T23:59:59.000Z

433

Analysis and reduction of chemical models under uncertainty.  

SciTech Connect

While models of combustion processes have been successful in developing engines with improved fuel economy, more costly simulations are required to accurately model pollution chemistry. These simulations will also involve significant parametric uncertainties. Computational singular perturbation (CSP) and polynomial chaos-uncertainty quantification (PC-UQ) can be used to mitigate the additional computational cost of modeling combustion with uncertain parameters. PC-UQ was used to interrogate and analyze the Davis-Skodje model, where the deterministic parameter in the model was replaced with an uncertain parameter. In addition, PC-UQ was combined with CSP to explore how model reduction could be combined with uncertainty quantification to understand how reduced models are affected by parametric uncertainty.

Oxberry, Geoff; Debusschere, Bert J.; Najm, Habib N.

2008-08-01T23:59:59.000Z

434

Update 1 to: A Dispersion Modeling Analysis of Downwash from Mirant's  

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

Update 1 to: A Dispersion Modeling Analysis of Downwash from Update 1 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Unit 1 Emissions in a Cycling Mode Update 1 to: A Dispersion Modeling Analysis of Downwash from Mirant's Potomac River Power Plant, Modeling Unit 1 Emissions in a Cycling Mode Docket No. EO-05-01. This report describes dispersion modeling performed for Unit 1 at Mirant's Potomac River Generating Station. The modeling was performed according to the Protocol approved by the Virginia Department of Environmental Quality. The purpose of the modeling was to demonstrate that Unit 1 operating alone under specific loads and during certain periods in a calendar day will not cause or contribute to exceedances of the National Ambient Air Quality Standards (NAAQS).

435

Stability Analysis of a Simplified Yet Complete Model for Chronic Myelegenous Leukemia  

E-Print Network (OSTI)

We analyze the asymptotic behavior of a partial differential equation (PDE) model for hematopoiesis. This PDE model is derived from the original agent-based model formulated by (Roeder et al., Nat. Med., 2006), and it describes the progression of blood cell development from the stem cell to the terminally differentiated state. To conduct our analysis, we start with the PDE model of (Kim et al, JTB, 2007), which coincides very well with the simulation results obtained by Roeder et al. We simplify the PDE model to make it amenable to analysis and justify our approximations using numerical simulations. An analysis of the simplified PDE model proves to exhibit very similar properties to those of the original agent-based model, even if for slightly different parameters. Hence, the simplified model is of value in understanding the dynamics of hematopoiesis and of chronic myelogenous leukemia, and it presents the advantage of having fewer parameters, which makes comparison with both experimental data and alternative...

Jauffret, Marie Doumic; Perthame, Benoît

2009-01-01T23:59:59.000Z

436

Evaluation of fluid-modeling techniques in the seismic analysis of LMFBR reactors  

Science Conference Proceedings (OSTI)

Fluid modeling is of great importance in the seismic analysis of the LMFBR primary system. If the fluid model used in the analysis is too simplified, the results could be very uncertain. On the other hand, if the model is too detailed, considerable difficulty might be encountered in the analysis. The objectives of this study are to examine the validity of the two commonly used fluid modeling techniques. i.e. simplified added mass method and lumped mass method and to provide some useful information on the treatment of fluid in seismic analysis. The validity of these two methods of analysis is examined by comparing the calculated seismic responses of a fluid-structure system based on these two methods with that calculated from a coupled fluid-structure interaction analysis in which the fluid is treated by continuum fluid elements.

Ma, D.C.; Gvildys, J.; Chang, Y.W.

1983-01-01T23:59:59.000Z

437

Global horizontal irradiance clear sky models : implementation and analysis.  

SciTech Connect

Clear sky models estimate the terrestrial solar radiation under a cloudless sky as a function of the solar elevation angle, site altitude, aerosol concentration, water vapor, and various atmospheric conditions. This report provides an overview of a number of global horizontal irradiance (GHI) clear sky models from very simple to complex. Validation of clear-sky models requires comparison of model results to measured irradiance during clear-sky periods. To facilitate validation, we present a new algorithm for automatically identifying clear-sky periods in a time series of GHI measurements. We evaluate the performance of selected clear-sky models using measured data from 30 different sites, totaling about 300 site-years of data. We analyze the variation of these errors across time and location. In terms of error averaged over all locations and times, we found that complex models that correctly account for all the atmospheric parameters are slightly more accurate than other models, but, primarily at low elevations, comparable accuracy can be obtained from some simpler models. However, simpler models often exhibit errors that vary with time of day and season, whereas the errors for complex models vary less over time.

Stein, Joshua S.; Hansen, Clifford W.; Reno, Matthew J.

2012-03-01T23:59:59.000Z

438

A long-term sensitivity analysis of the denitrification and decomposition model  

Science Conference Proceedings (OSTI)

Although sensitivity analysis (SA) was conducted on the DeNitrification-DeComposition (DNDC) model, a global SA over a long period of time is lacking. We used a method of Bayesian analysis of computer code outputs (BACCO) with the Gaussian emulation ... Keywords: BACCO, BACCO GEM-SA, DNDC, GEM-SA, GSA, Global sensitivity analysis, Long-term, SA

Xiaobo Qin; Hong Wang; Yu'E Li; Yong Li; Brian Mcconkey; Reynald Lemke; Changsheng Li; Kelsey Brandt; Qingzhu Gao; Yunfan Wan; Shuo Liu; Yuntong Liu; Chao Xu

2013-05-01T23:59:59.000Z

439

Polarimetric remote sensing system analysis: Digital Imaging and Remote Sensing Image Generation (DIRSIG) model  

E-Print Network (OSTI)

i Polarimetric remote sensing system analysis: Digital Imaging and Remote Sensing Image Generation CENTER FOR IMAGING SCIENCE Title of Dissertation: Polarimetric remote sensing system analysis: DIRSIG____________________________________________________________ Date #12;vi #12;vii Polarimetric remote sensing system analysis: DIRSIG model validation and impact

Salvaggio, Carl

440

Shape Analysis and Spatio-Temporal Tracking of Mesoscale Eddies in Miami Isopycnic Coordinate Ocean Model  

Science Conference Proceedings (OSTI)

Detection and analysis of ocean surface phenomena have so far relied on manual analysis of long sequences of satellite images or images produced from the mathematical models. In this paper a technique for the three-dimensional shape analysis and spato-temporall ...

Veena Moolani; Ramprasad Balasubramanian; Li Shen; Amit Tandon

2006-06-01T23:59:59.000Z

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441

A unified model for detecting efficient and inefficient outliers in data envelopment analysis  

Science Conference Proceedings (OSTI)

Data envelopment analysis (DEA) uses extreme observations to identify superior performance, making it vulnerable to outliers. This paper develops a unified model to identify both efficient and inefficient outliers in DEA. Finding both types is important ... Keywords: Data envelopment analysis, Outlier, Post analysis

Wen-Chih Chen; Andrew L. Johnson

2010-02-01T23:59:59.000Z

442

Model Development and Analysis of the Fate and Transport of Water in a Salt  

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

Model Development and Analysis of the Fate and Transport of Water Model Development and Analysis of the Fate and Transport of Water in a Salt Based Repository Model Development and Analysis of the Fate and Transport of Water in a Salt Based Repository The study summarizes the initial work on numerical modeling, simulations, and experimental results related to nuclear waste storage in a salt repository. The study reflects the project's preliminary effort at simulating the fluid flow and heat transport processes, before treating the fully coupled thermal-mechanical-hydrologic-chemical (TMHC) coupled processes in the future. Model Development and Analysis of the Fate and Transport of Water in a Salt Based Repository More Documents & Publications Coupled Model for Heat and Water Transport in a High Level Waste Repository

443

Centrifuge Modeling and Analysis of Concrete Gravity Dams  

Science Conference Proceedings (OSTI)

This report contains general background information on centrifuge experimentation and linear elastic fracture mechanics pertaining to concrete gravity dam models, and explains in detail the experimental methodology and procedures developed for testing concrete gravity dam models in centrifuges. An important detail in the experimental procedure is that the models are loaded upstream with water and, at fracture, have water uplift pressure within any cracks. Finally, test results and comparisons to analytic...

1995-12-14T23:59:59.000Z

444

Modeling and Analysis of Renewable Generation in a Sustainable Portfolio  

Science Conference Proceedings (OSTI)

This Technical Update reports the results of work to enhance EPRIs financial model of the U.S. electric sector by improving the representations for the role wind and biomass generation in the future U.S. generation mix. The model simulates generation capacity expansion and dispatch at the national and regional levels over the period 2010 to 2050. The model evaluates the possible effects of climate policy, renewable portfolio standard (RPS), energy efficiency, technology availability, and market scenarios...

2010-12-17T23:59:59.000Z

445

Modeling, Analysis, and Control of Demand Response Resources  

E-Print Network (OSTI)

4.2.1 Individual TCL model . . . . . . . . . . . . . .4.2.2 Plant: The TCL population . . . . . . . .5 TCL Resource, Revenues & Costs 5.1 Chapter

Mathieu, Johanna L.

2012-01-01T23:59:59.000Z