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1

Extended-Range Atmospheric Prediction and the Lorenz Model  

Science Conference Proceedings (OSTI)

The physical basis for extended-range prediction is explored using the famous three-component Lorenz convection model, taken as a conceptual representation of the chaotic extratropical circulation, and extended by coupling to a linear oscillator ...

T. N. Palmer

1993-01-01T23:59:59.000Z

2

Fair Model Checking of Abstractions (Extended Abstract)  

E-Print Network (OSTI)

. The abstract transitions (dashed and fat arrows) are explained further on. A transition system models of a model by ignoring certain static aspects. Such a reduction is usually necessary to render model checking

Dams, Dennis

3

Extended finite state models of language  

Science Conference Proceedings (OSTI)

In spite of the wide availability of more powerful (context free, mildly context sensitive, and even Turing-equivalent) formalisms, the bulk of the applied work on language and sublanguage modeling, especially for the purposes of recognition and topic ...

András Kornai

1996-12-01T23:59:59.000Z

4

Does increasing model stratospheric resolution improve extended range forecast skill?  

E-Print Network (OSTI)

Does increasing model stratospheric resolution improve extended range forecast skill? Greg Roff,1 forecast skill at high Southern latitudes is explored. Ensemble forecasts are made for two model configurations that differ only in vertical resolution above 100 hPa. An ensemble of twelve 30day forecasts

5

Extending object-oriented databases for fuzzy information modeling  

Science Conference Proceedings (OSTI)

In this paper, based on possibility distribution and the semantic measure of fuzzy data, we introduce an extended object-oriented database model to handle imperfect as well as complex objects in the real world. Some major notions in object-oriented databases ... Keywords: fuzzy data, fuzzy object-oriented database model, object-oriented databases, operations, semantic measure

Z. M. Ma; W. J. Zhang; W. Y. Ma

2004-07-01T23:59:59.000Z

6

Measuring extended Higgs sectors as a consistent free couplings model  

E-Print Network (OSTI)

Extended Higgs sectors appear in many models for physics beyond the Standard Model. Current Higgs measurements at the LHC are starting to significantly constrain them. We study their Higgs coupling patterns at tree level as well as including quantum corrections. Our benchmarks include a dark singlet-doublet extension and several two-doublet setups. Using SFitter we translate the current Higgs coupling measurements for one light Higgs state into their respective parameter spaces. Finally, we show how two-Higgs-doublet models can serve as a consistent ultraviolet completion of an assumed single Standard-Model-like Higgs boson with free couplings.

David Lopez-Val; Tilman Plehn; Michael Rauch

2013-08-08T23:59:59.000Z

7

Polynomial fusion rings of W-extended logarithmic minimal models  

E-Print Network (OSTI)

The countably infinite number of Virasoro representations of the logarithmic minimal model LM(p,p') can be reorganized into a finite number of W-representations with respect to the extended Virasoro algebra symmetry W. Using a lattice implementation of fusion, we recently determined the fusion algebra of these representations and found that it closes, albeit without an identity for p>1. Here, we provide a fusion-matrix realization of this fusion algebra and identify a fusion ring isomorphic to it. We also consider various extensions of it and quotients thereof, and introduce and analyze commutative diagrams with morphisms between the involved fusion algebras and the corresponding quotient polynomial fusion rings. One particular extension is reminiscent of the fundamental fusion algebra of LM(p,p') and offers a natural way of introducing the missing identity for p>1. Working out explicit fusion matrices is facilitated by a further enlargement based on a pair of mutual Moore-Penrose inverses intertwining between the W-fundamental and enlarged fusion algebras.

Jorgen Rasmussen

2008-12-05T23:59:59.000Z

8

Extending the Petrel Model Builder for Educational and Research Purposes  

E-Print Network (OSTI)

Reservoir Simulation is a very powerful tool used in the Oil and Gas industry to perform and provide various functions including but not limited to predicting reservoir performance, conduct sensitivity analysis to quantify uncertainty, production optimization and overall reservoir management. Compared to explored reservoirs in the past, current day reservoirs are more complex in extent and structure. As a result, reservoir simulators and algorithms used to represent dynamic systems of flow in porous media have invariably got just as complex. In order to provide the best solutions for analyzing reservoir performance, there is a need to continuously develop reservoir simulators and reservoir simulation algorithms that best represent the performance of the reservoir without compromising efficiency and accuracy. There exists several commercial reservoir simulation packages in the market that have been proven to be extremely resourceful with functionality that covers a wide range of interests in reservoir simulation yet there is the constant need to provide better and more efficient methods and algorithms to study and manage our reservoirs. This thesis aims at bridging the gap in the framework for developing these algorithms. To this end, this project has both an educational and research component. Educational because it leads to a strong understanding of the topic of reservoir simulation for students which can be daunting especially for those who require a more direct experience to fully comprehend the subject matter. It is research focused because it will serve as the foundation for developing a framework for integrating custom built external simulators and algorithms with the workflow of the model builder of our reservoir simulation package of choice i.e. Petrel with the Ocean programming environment in a seamless manner for simulating large scale multi-physics problems of flow in highly heterogeneous flow of porous media. Of particular interest are the areas of model order reduction and production optimization. In-house algorithms are being developed for these areas of interest and with the completion of this project. We hope to have developed a framework whereby we can take our algorithms specifically developed for areas of interest and add them to the workflow of the Petrel Model Builder. Currently, we have taken one of our in-house simulators i.e. a two dimensional, oil-water five-spot water flood pattern as a starting point and have been able to integrate it successfully into the “Define Simulation Case” process of Petrel as an additional choice for simulation by an end user. In the future, we will expand this simulator with updates to improve its performance, efficiency and extend its capabilities to incorporate areas of research interest.

Nwosa, Obiajulu C

2013-05-01T23:59:59.000Z

9

An Extended Model for the Potential Intensity of Tropical Cyclones  

Science Conference Proceedings (OSTI)

Emanuel’s theory of hurricane potential intensity (E-PI) makes use of the assumption that slantwise convective instability vanishes in a steady-state vortex of a tropical cyclone. In the framework of an extended mathematical potential intensity ...

Thomas Frisius; Daria Schönemann

2012-02-01T23:59:59.000Z

10

A new extended Birnbaum-Saunders regression model for lifetime modeling  

Science Conference Proceedings (OSTI)

A new class of extended Birnbaum-Saunders regression models is introduced. It can be applied to censored data and be used more effectively in survival analysis and fatigue life studies. Maximum likelihood estimation of the model parameters with censored ... Keywords: Birnbaum-Saunders distribution, Censored data, Fatigue life distribution, Lifetime data, Local influence analysis

Artur J. Lemonte

2013-08-01T23:59:59.000Z

11

The classically conformal B - L extended standard model  

SciTech Connect

I investigated the minimal B - L extended SM with classically conformal symmetry. The baryogenesis is realized thorough the resonant leptogenesis. I found that a fixed CP-phase can simultaneously reproduce all neutrino oscillation data and the observed baryon asymmetry in the present Universe.

Orikasa, Yuta

2012-07-27T23:59:59.000Z

12

Consistent data operations for multi-databases in extended possibility-based data models  

Science Conference Proceedings (OSTI)

This paper considers the data operation for multi-databases in an extended possibility-based data model. Owing to the complexity of the data model considered, inconsistent redundancy of tuples may occur when database relations being operated are associated ... Keywords: Data operation, Extended possibility-based data model, Fuzzy databases, Proximity relations

Julie Yu-Chih Liu; Pei-Chann Chang; Clark P. C. Yeh

2009-04-01T23:59:59.000Z

13

Modelling well leakage in multilayer aquifer systems using the extended finite element method  

Science Conference Proceedings (OSTI)

The extended finite element method (XFEM) is applied to the problem of predicting the steady-state leakage from layered sedimentary aquifer systems perforated by abandoned wells. Multi-aquifer systems are modelled using a quasi-three-dimensional model ... Keywords: Extended finite element method, GFEM, Generalised finite element method, Leakage, Multi-aquifer systems, XFEM

Robert Gracie; James R. Craig

2010-06-01T23:59:59.000Z

14

Does increasing model stratospheric resolution improve5 extended-range forecast skill?6  

E-Print Network (OSTI)

1 1 2 3 4 Does increasing model stratospheric resolution improve5 extended-range forecast skill?6 7 The effect of stratospheric resolution on extended-range forecast skill at high latitudes2 in the Southern Hemisphere is explored. Ensemble forecasts are made for two model3 configurations that differ only

Birner, Thomas

15

Damage Modeling and Life Extending Control of a Boiler-Turbine System1  

E-Print Network (OSTI)

Damage Modeling and Life Extending Control of a Boiler-Turbine System1 Donglin Li Tongwen Chen2 hierarchical LEC structure and apply it to a typ- ical boiler system. There are two damage models

Marquez, Horacio J.

16

Route to supersolidity for the extended Bose-Hubbard model  

Science Conference Proceedings (OSTI)

We use the Gutzwiller ansatz and analyze the phase diagram of the extended Bose-Hubbard Hamiltonian with on-site (U) and nearest-neighbor (V) repulsions. For d-dimensional hypercubic lattices, when 2dVphase occupies small regions around the CDW insulators. However, when 2dV>U, in this Rapid Communication, we show that the ground state has only CDW insulators, and more importantly, the SS phase occupies a much larger region in the phase diagram, existing up to very large hopping values which could be orders of magnitude higher than that of the well-known case. In particular, the SS-superfluid phase boundary increases linearly as a function of hopping when 2dV > or approx. 1.5U, for which the prospects of observing the SS phase with dipolar Bose gases loaded into optical lattices is much higher.

Iskin, M. [Department of Physics, Koc University, Rumelifeneri Yolu, TR-34450 Sariyer, Istanbul (Turkey)

2011-05-15T23:59:59.000Z

17

Modelling light curves of binary systems: accounting for extended winds  

E-Print Network (OSTI)

We suggest a simple synthesis model of an eclipsing binary system which includes one component with strong stellar wind. Numerical simulations show that the shape of the light curve (and in particularly the widths of the minima) strongly depends on wind parameters. Wind effects are crucial in modelling light curves of binaries including e.g., WR stars.

Antokhina, E A; Cherepashchuk, A M

2013-01-01T23:59:59.000Z

18

Extended Supersymmetry and BPS solutions in baby Skyrme models  

E-Print Network (OSTI)

We continue the investigation of supersymmetric extensions of baby Skyrme models in d=2+1 dimensions. In a first step, we show that the CP(1) form of the baby Skyrme model allows for the same N=1 SUSY extension as its O(3) formulation. Then we construct the N=1 SUSY extension of the gauged baby Skyrme model, i.e., the baby Skyrme model coupled to Maxwell electrodynamics. In a next step, we investigate the issue of N=2 SUSY extensions of baby Skyrme models. We find that all gauged and ungauged submodels of the baby Skyrme model which support BPS soliton solutions allow for an N=2 extension such that the BPS solutions are one-half BPS states (i.e., annihilated by one-half of the SUSY charges). In the course of our investigation, we also derive the general BPS equations for completely general N=2 supersymmetric field theories of (both gauged and ungauged) chiral superfields, and apply them to the gauged nonlinear sigma model as a further, concrete example.

Adam, C; Sanchez-Guillen, J; Wereszczynski, A

2013-01-01T23:59:59.000Z

19

Extended-Range Probability Forecasts Based on Dynamical Model Output  

Science Conference Proceedings (OSTI)

A probability forecast has advantages over a deterministic forecast as the former offers information about the probabilities of various possible future states of the atmosphere. As physics-based numerical models find their success in modern ...

Jianfu Pan; Huug van den Dool

1998-12-01T23:59:59.000Z

20

Software process simulation modeling: an extended systematic review  

Science Conference Proceedings (OSTI)

Software Process Simulation Modeling (SPSM) research has increased in the past two decades, especially since the first ProSim Workshop held in 1998. Our research aims to systematically assess how SPSM has evolved during the past 10 years in particular ...

He Zhang; Barbara Kitchenham; Dietmar Pfahl

2010-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Non-leptonic decays in an extended chiral quark model  

Science Conference Proceedings (OSTI)

We consider the color suppressed (nonfactorizable) amplitude for the decay mode B{sub d}{sup 0}{yields}{pi}{sup 0}{pi}{sup 0}. We treat the b-quark in the heavy quark limit and the energetic light (u,d,s) quarks within a variant of Large Energy Effective Theory combined with an extension of chiral quark models. Our calculated amplitude for B{sub d}{sup 0}{yields}{pi}{sup 0}{pi}{sup 0} is suppressed by a factor of order {Lambda}{sub QCD}/m{sub b} with respect to the factorized amplitude, as it should according to QCD-factorization. Further, for reasonable values of the (model dependent) gluon condensate and the constituent quark mass, the calculated nonfactorizable amplitude for B{sub d}{sup 0}{yields}{pi}{sup 0}{pi}{sup 0} can easily accomodate the experimental value. Unfortunately, the color suppressed amplitude is very sensitive to the values of these model dependent parameters. Therefore fine-tuning is necessary in order to obtain an amplitude compatible with the experimental result for B{sub d}{sup 0}{yields}{pi}{sup 0}{pi}{sup 0}.

Eeg, J. O. [Dept. of Physics, Univ. of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo (Norway)

2012-10-23T23:59:59.000Z

22

Session 4: EER: Extended (or Enhanced) ER Model (CH-2 and 3)  

E-Print Network (OSTI)

Session 4: EER: Extended (or Enhanced) ER Model (CH-2 and 3) CSCI-585 , Cyrus Shahabi · Example ER to no subclass. EER-to-Relational Mapping · Option 1: One table for superclass + two tables for subclasses (one

Shahabi, Cyrus

23

Parameter sensitivity analysis of crop growth models based on the extended Fourier Amplitude Sensitivity Test method  

Science Conference Proceedings (OSTI)

Sensitivity analysis (SA) has become a basic tool for the understanding, application and development of models. However, in the past, little attention has been paid to the effects of the parameter sample size and parameter variation range on the parameter ... Keywords: Extended FAST, Multivariable output, Parameter variation range, Sample size, Time-dependent properties, WOFOST crop growth models

Jing Wang, Xin Li, Ling Lu, Feng Fang

2013-10-01T23:59:59.000Z

24

Beyond the No Core Shell Model: Extending the NCSM to Heavier Nuclei  

Science Conference Proceedings (OSTI)

The No Core Shell Model (NCSM) is an ab initio method for calculating the properties of light nuclei, up to about A = 20, in which all A nucleons are treated as being active. It is difficult to go to larger A values due to the rapid grow of the basis spaces required in order to obtain converged results. In this presentation we briefly discuss three new techniques for extending the NCSM to heavier mass nuclei.

Barrett, Bruce R. [Department of Physics, P.O. Box 210081, University of Arizona, Tucson, AZ 85721-0081 (United States)

2011-05-06T23:59:59.000Z

25

An Extended Grid of Nova Models: II. The Parameter Space of Nova Outbursts  

E-Print Network (OSTI)

This paper is a sequel to an earlier paper devoted to multiple, multicycle nova evolution models (Prialnik & Kovetz 1995, first paper of the series), which showed that the different characteristics of nova outbursts can be reproduced by varying the values of three basic and independent parameters: the white dwarf mass-M_{WD}, the temperature of its isothermal core-T_{WD} and the mass transfer rate-Mdot. Apart from being the largest computational classical novae parameter-space survey, we show here that the parameter space is constrained by several analytical considerations and find its limiting surfaces. Consequently, we extend the grid of multicycle nova evolution models presented in Paper I almost to its limits, adding multicycle nova outburst calculations for a considerable number of new parameter combinations. In particular, the extended parameter pace that produces nova eruptions includes low mass transfer rates down to 5e-13 Msun/yr, and more models for low T_{WD}. Resulting characteristics of these...

Yaron, O; Shara, M M; Kovetz, A

2005-01-01T23:59:59.000Z

26

Integrable, molecular-type solutions of the extended Skyrme-Faddeev model  

E-Print Network (OSTI)

We construct molecular type vortex solutions in the integrable sector of the extended Skyrme-Faddeev (ESF) model.The solutions are a holomorphic type which satisfies the zero curvature condition.For some constrained values of the coupling constants, special vortex solutions exist.For other values, special forms of the potential are employed for the stability of the molecular type solution.The solutions satisfy the zero curvature condition, and then they necessarily have an infinite number of conserved current. We numerically check their existence in terms of the simulated annealing method.

Nobuyuki Sawado; Yuta Tamaki

2013-09-23T23:59:59.000Z

27

Extended three-dimensional ADCIRC hydrodynamic model to include baroclinic flow and sediment transport  

E-Print Network (OSTI)

The objective of this research is to identify the circulation patterns of the water and sediment fluxes in coastal and estuarine zones, where the shoaling processes correlate with tide generating flow patterns. The research provides a better understanding of the characteristics of spatial and temporal variability of currents. An important deviation from previous research is the inclusion of the baroclinic term, which becomes very important in density driven flows. The understanding of this process provides a basis for determining how the water circulation three-dimensionally controls the hydrodynamics of the system and ultimately transports the suspended and soluble materials due to combined currents and waves. A three-dimensional circulation model is used to calculate the water circulation. The model is based on the three-dimensional (3D) version of Advanced Circulation (AD-CIRC) Hydrodynamic Model with extending the Sediment Transport module. The model is based on the finite element method on unstructured grids. The output of the hydrody-namic model is used to estimate spatial and temporal advections, dispersions and bottom shear stress for the erosion, suspension, deposition and transport of sediment. The model development includes extending the existing three-dimensional (3D) ADCIRC Model with (1) baroclinic forcing term and (2) transport module of suspended and soluble materials. The transport module covers the erosion, material suspension and deposition processes for both cohesive and non-cohesive type sediments. The inclusion of the baroclinic demonstrates the potential of over or underpredicting the total net transport of suspended cohesive sediment under influence of currents. The model provides less than 6% error of theoretical mass conservation for eroded, suspended and deposited sediment material. The inclusion of the baroclinic term in stratified water demonstrates the prevailing longshore sediment transport. It is shown that the model has an application to the transport of the cohesive sediments from the mouth of the Mississippi River along the north shore of the Gulf of Mexico towards and along the Texas coast. The model is also applicable to determine the design erosion thickness of a cap for isolating contaminated dredged material and to evaluate the appro-priate grain size of cap sediments to minimize the erosion.

Pandoe, Wahyu Widodo

2003-05-01T23:59:59.000Z

28

A Hybrid Query Language for an Extended Entity-Relationship Model  

E-Print Network (OSTI)

We present the hybrid query language HQL/EER for an Extended Entity-Relationship model. As its main characteristic, this language allows a user to use both graphical and textual elements in the formulation of one and the same query. We demonstrate the lookand -feel of this query language by means of examples, and show how syntax and semantics of this language are formally defined using programmed graph rewriting systems. Although we present the language in the context of the EER model, the concept of hybrid languages is applicable in the context of other database models as well. We illustrate this claim by discussing a prototype implementation of a Hybrid Query Tool based on an object-oriented approach, namely the Object Modeling Technique (OMT). 1 Introduction The database research efforts of the past decade have provided us with a wide range of both database models and systems, allowing the user to perform complex manipulations on data structures of high modeling power. Th...

Marc Andries; Gregor Engels

1993-01-01T23:59:59.000Z

29

An extended finite element method for hydraulic fracture propagation in deformable porous media with the cohesive crack model  

Science Conference Proceedings (OSTI)

In this paper, a fully coupled numerical model is developed for the modeling of the hydraulic fracture propagation in porous media using the extended finite element method in conjunction with the cohesive crack model. The governing equations, which account ... Keywords: Cohesive crack propagation, Fluid flow, Fracturing porous media, Fully coupled model, Hydraulic fracturing, XFEM

T. Mohammadnejad, A. R. Khoei

2013-10-01T23:59:59.000Z

30

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

Science Conference Proceedings (OSTI)

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

Evgeni Fedorovich

1995-09-01T23:59:59.000Z

31

An Extended Grid of Nova Models: II. The Parameter Space of Nova Outbursts  

E-Print Network (OSTI)

This paper is a sequel to an earlier paper devoted to multiple, multicycle nova evolution models (Prialnik & Kovetz 1995, first paper of the series), which showed that the different characteristics of nova outbursts can be reproduced by varying the values of three basic and independent parameters: the white dwarf mass-M_{WD}, the temperature of its isothermal core-T_{WD} and the mass transfer rate-Mdot. Apart from being the largest computational classical novae parameter-space survey, we show here that the parameter space is constrained by several analytical considerations and find its limiting surfaces. Consequently, we extend the grid of multicycle nova evolution models presented in Paper I almost to its limits, adding multicycle nova outburst calculations for a considerable number of new parameter combinations. In particular, the extended parameter pace that produces nova eruptions includes low mass transfer rates down to 5e-13 Msun/yr, and more models for low T_{WD}. Resulting characteristics of these runs are added to the former parameter combination results, to provide a full grid spanning the entire parameter space for Carbon-Oxygen white dwarfs. The full grid covers the entire range of observed nova characteristics, even those of peculiar objects, which have not been numerically reproduced until now. Most remarkably, runs for very low Mdot lead to very high values for some characteristics, such as outburst amplitude A>~20, high super-Eddington luminosities at maximum, heavy element abundance of the ejecta Z_{ej}~0.63 and high ejected masses m_{ej}~7e-4 Msun.

O. Yaron; D. Prialnik; M. M. Shara; A. Kovetz

2005-03-07T23:59:59.000Z

32

Extended Bose Hubbard model of interacting bosonic atoms in optical lattices: From superfluidity to density waves  

Science Conference Proceedings (OSTI)

For systems of interacting, ultracold spin-zero neutral bosonic atoms, harmonically trapped and subject to an optical lattice potential, we derive an Extended Bose Hubbard (EBH) model by developing a systematic expansion for the Hamiltonian of the system in powers of the lattice parameters and of a scale parameter, the lattice attenuation factor. We identify the dominant terms that need to be retained in realistic experimental conditions, up to nearest-neighbor interactions and nearest-neighbor hoppings conditioned by the on-site occupation numbers. In the mean field approximation, we determine the free energy of the system and study the phase diagram both at zero and at finite temperature. At variance with the standard on site Bose Hubbard model, the zero-temperature phase diagram of the EBH model possesses a dual structure in the Mott insulating regime. Namely, for specific ranges of the lattice parameters, a density wave phase characterizes the system at integer fillings, with domains of alternating mean occupation numbers that are the atomic counterparts of the domains of staggered magnetizations in an antiferromagnetic phase. We show as well that in the EBH model, a zero-temperature quantum phase transition to pair superfluidity is, in principle, possible, but completely suppressed at the lowest order in the lattice attenuation factor. Finally, we determine the possible occurrence of the different phases as a function of the experimentally controllable lattice parameters.

Mazzarella, G.; Giampaolo, S. M.; Illuminati, F. [Dipartimento di Fisica 'E. R. Caianiello', Universita di Salerno, Coherentia CNR-INFM, and INFN Sezione di Napoli, Gruppo Collegato di Salerno, Via S. Allende, 84081 Baronissi (Saudi Arabia) (Italy)

2006-01-15T23:59:59.000Z

33

Extended Bose Hubbard model of interacting bosonic atoms in optical lattices: from superfluidity to density waves  

E-Print Network (OSTI)

For systems of interacting, ultracold spin-zero neutral bosonic atoms, harmonically trapped and subject to an optical lattice potential, we derive an Extended Bose Hubbard (EBH) model by developing a systematic expansion for the Hamiltonian of the system in powers of the lattice parameters and of a scale parameter, the {\\it lattice attenuation factor}. We identify the dominant terms that need to be retained in realistic experimental conditions, up to nearest-neighbor interactions and nearest-neighbor hoppings conditioned by the on site occupation numbers. In mean field approximation, we determine the free energy of the system and study the phase diagram both at zero and at finite temperature. At variance with the standard on site Bose Hubbard model, the zero temperature phase diagram of the EBH model possesses a dual structure in the Mott insulating regime. Namely, for specific ranges of the lattice parameters, a density wave phase characterizes the system at integer fillings, with domains of alternating mean occupation numbers that are the atomic counterparts of the domains of staggered magnetizations in an antiferromagnetic phase. We show as well that in the EBH model, a zero-temperature quantum phase transition to pair superfluidity is in principle possible, but completely suppressed at lowest order in the lattice attenuation factor. Finally, we determine the possible occurrence of the different phases as a function of the experimentally controllable lattice parameters.

G. Mazzarella; S. M. Giampaolo; F. Illuminati

2005-09-06T23:59:59.000Z

34

New particle-hole symmetries and the extended interacting boson model  

E-Print Network (OSTI)

We describe shape coexistence and intruder many-particle-hole (mp-nh)excitations in the extended interacting boson model EIBM and EIBM-2,combining both the particle-hole and the charge degree of freedom.Besides the concept of I-spin multiplets and subsequently $SU(4)$ multiplets, we touch upon the existence of particle-hole mixed symmetry states. We furthermore describe regular and intrudermany-particle-hole excitations in one nucleus on an equal footing, creating (annihilating) particle-hole pairs using the K-spin operatorand studying possible mixing between these states. As a limiting case,we treat the coupling of two IBM-1 Hamiltonians, each decribing the regular and intruder excitations respectively, in particular lookingat the $U(5)$-$SU(3)$ dynamical symmetry coupling. We apply such coupling scheme to the Po isotopes.

De Coster, C; Decroix, B; Heyde, Kris L G; Oros, A M

1998-01-01T23:59:59.000Z

35

Problem Specification for FY12 Modeling of UNF During Extended Storage  

SciTech Connect

The Nuclear Energy Advanced Modeling and Simulation (NEAMS) program of the Advanced Modeling and Simulation Office (AMSO) of the US Department of Energy, Office of Nuclear Energy (DOE/NE) has invested in the initial extension and application of advanced nuclear simulation tools to address relevant needs in evaluating the performance of used nuclear fuel (UNF) during extended periods of dry storage. There are many significant challenges associated with the prediction of the behavior of used fuel during extended periods of dry storage and subsequent transportation. The initial activities are focused on integrating with the Used Fuel Disposition (UFD) Campaign of the DOE/NE and a demonstration that the Advanced Multi-Physics (AMP) Nuclear Fuel Performance code (AMPFuel) for modeling the mechanical state of the cladding after decades of storage. This initial focus will model the long-term storage of the UNF and account for the effect, and generation, of radially and circumferentially oriented hydride precipitates within the cladding and predict the end of storage (EOS) mechanical state (stress, strain) of the cladding. Predicting the EOS state of the cladding is significant because it (1) provides an estimate of the margin to failure of the cladding during nominal storage operation and it (2) establishes the initial state of the fuel for post-storage transportation. Because there are significant uncertainties associated with the storage conditions, hydride precipitate formation, and the beginning of storage (BOS) condition of the UNF, this will also allow for the development of a rigorous capability to evaluate the relative sensitivities of the uncertainties and can help to guide the experimental and analysis efforts of the UFD Campaign. This document is focused on specifying the problem that will be solved with AMPFuel. An associated report, documents the specifics of the constitutive model that will be developed and implemented in AMPFuel to account for the presence and predict the generation of the hydride precipitates. This report satisfies the deliverable for the DOE Office of Nuclear Energy, Advanced Modeling and Simulation Office, milestone M3MS-12OR0605083, 'Definition of Problem Specification,' which defines the problem to be solved that will satisfy milestone M2MS-12OR0605081, 'Demonstration of the Advanced Multi-Physics (AMP) Nuclear Fuel Performance code for modeling UFD.' This document should provide sufficient detail to model a high burnup pressurized water reactor (PWR) fuel rod to provide an estimate of the end of storage (EOS) mechanical state of the cladding. The fuel rod and irradiation history are based on seven cycles of irradiation in the CP and L H.B. Robinson nuclear reactor, which achieved a discharge burnup of 66.682 MWd/kgU. The fuel has been experimentally examined for storage conditions by Argonne National Laboratory for the NRC. In addition, we have compiled a list of key factors that have been shown to strongly influence the EOS state of the fuel and have identified baseline values and ranges of uncertainties that will be considered. The simulations that will be performed have been described in detail and include the modeling assumptions and boundary conditions.

Clarno, Kevin T [ORNL; Howard, Rob L [ORNL

2012-03-01T23:59:59.000Z

36

THERMAL PERFORMANCE SENSITIVITY STUDIES IN SUPPORT OF MATERIAL MODELING FOR EXTENDED STORAGE OF USED NUCLEAR FUEL  

SciTech Connect

The work reported here is an investigation of the sensitivity of component temperatures of a storage system, including fuel cladding temperatures, in response to age-related changes that could degrade the design-basis thermal behavior of the system. Three specific areas of interest were identified for this study. • degradation of the canister backfill gas from pure helium to a mixture of air and helium, resulting from postulated leakage due to stress corrosion cracking (SCC) of canister welds • changes in surface emissivity of system components, resulting from corrosion or other aging mechanisms, which could cause potentially significant changes in temperatures and temperature distributions, due to the effect on thermal radiation exchange between components • changes in fuel and basket temperatures due to changes in fuel assembly position within the basket cells in the canister The purpose of these sensitivity studies is to provide a realistic example of how changes in the physical properties or configuration of the storage system components can affect temperatures and temperature distributions. The magnitudes of these sensitivities can provide guidance for identifying appropriate modeling assumptions for thermal evaluations extending long term storage out beyond 50, 100, 200, and 300 years.

Cuta, Judith M.; Suffield, Sarah R.; Fort, James A.; Adkins, Harold E.

2013-08-15T23:59:59.000Z

37

Extending the Numerical Stability Limit of Terrain-Following Coordinate Models over Steep Slopes  

Science Conference Proceedings (OSTI)

To extend the numerical stability limit over steep slopes, a truly horizontal pressure-gradient discretization based on the ideas formulated by Mahrer in the 1980s has been developed. Conventionally, the pressure gradient is evaluated in the ...

Günther Zängl

2012-11-01T23:59:59.000Z

38

Modeling infrastructure interdependency among floodplain infrastructures with extended Petri-Net  

Science Conference Proceedings (OSTI)

Safety assessment of the infrastructures in a network can be predicted using the extended Petri-Net analysis. The analysis has been applied to a system of floodplain infrastructures consisting of power generating infrastructures, e.g., water storage ... Keywords: Markov chain, infrastructure, interdependency, reachability graph, transition probability

S. Sultana; Z. Chen

2007-08-01T23:59:59.000Z

39

Applying and extending a semantic foundation for role-related concepts in enterprise modelling  

Science Conference Proceedings (OSTI)

In this paper, we provide a semantic foundation for role-related concepts in enterprise modelling. We use a conceptual modelling framework to provide a well-founded underpinning for these concepts. We review a number of enterprise modelling approaches ... Keywords: actors, conceptual modelling, enterprise modelling, object modelling, roles

Joao Paulo A. Almeida; Giancarlo Guizzardi; Paulo Sergio Santos, Jr

2009-08-01T23:59:59.000Z

40

Extended macroscopic dispersion model with applications to confined packed beds and capillary column inverse gas chromatography.  

E-Print Network (OSTI)

??Until present, many researchers relied on the conventional plug flow dispersion models to analyse the concentration profiles obtained from the tracer injection experiments to evaluate… (more)

Hamdan, Emad

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

An Analytical Model for the IEEE 802.1le EDCF Extended Abstract  

E-Print Network (OSTI)

to the capability of supporting QoS. [9] presents an analytic model for p-DCF, which uses a different backoff

Panwar, Shivendra S.

42

Extending Simulation Modeling to Activity-Based Costing for Clinical Procedures  

Science Conference Proceedings (OSTI)

A simulation model was developed to measure costs in an Emergency Department setting for patients presenting with possible cervical-spine injury who needed radiological imaging. Simulation, a tool widely used to account for process variability but typically ... Keywords: activity-based costing, animated simulation modeling

Noah D. Glick; C. Craig Blackmore; William N. Zelman

2000-04-01T23:59:59.000Z

43

Numerical Extended-Range Prediction: Forecast Skill Using a Low-Resolution Climate Model  

Science Conference Proceedings (OSTI)

A pilot study that evaluates the potential forecast skill of winter 10–30-day time-mean flow from a low-resolution (R15) climate simulation model is presented. The hypothesis tested is that low-resolution climate model forecasts might be as ...

David P. Baumhefner

1996-09-01T23:59:59.000Z

44

Incorporating Radiation Effects into Edge Plasma Transport Models with Extended Atomic Data Tables  

DOE Green Energy (OSTI)

Plasmas at the tokamak edge can be very optically thick to hydrogen resonance lines. The resulting strong line radiation can significantly affect the ionization and energy balance in these plasmas. One method of account for effects is to self-consistently couple a partially ionized plasma transport model with a nonlocal thermodynamic equilibrium (NLTE) model incorporating line radiation transfer. This approach has been implemented in one dimension, but would be computationally challenging and expensive to implement in multiple dimensions. Approximate treatments of radiation transfer can decrease the computational time, but would still require coupling to a multidimensional plasma transport model to address realistic geometries, e.g. the tokamak divertor. Here, we consider the development of atomic hydrogen data tables that include radiation interactions and can be easily applied to multidimensional geometries.

Scott, H A; Adams, M L

2004-06-14T23:59:59.000Z

45

Speculation  

Gasoline and Diesel Fuel Update (EIA)

Market Market Luciana Juvenal (Federal Reserve Bank of St. Louis and International Monetary Fund) Ivan Petrella (Birkbeck College, University of London) Motivation Introduction Econometric Method Data and Speci...cation VAR and FAVAR Extended Model Conclusion Appendix Disclaimer The views expressed are those of the individual authors and do not necessarily re‡ect o¢ cial positions of the Federal Reserve Bank of St. Louis, the Federal Reserve System, the Board of Governors, or the International Monetary Fund. Motivation Introduction Econometric Method Data and Speci...cation VAR and FAVAR Extended Model Conclusion Appendix Big picture ! Increase in oil prices since 2004 coincided with: Large ‡ow of investment into commodity markets Financial institutions invested billions of dollars in futures markets Assets allocated to commodity index trading increased from

46

An extended SMLD approach for presumed probability density function in flamelet combustion model  

E-Print Network (OSTI)

This paper provides an extension of the standard flamelet progress variable (FPV) approach for turbulent combustion, applying the statistically most likely distribution (SMLD) framework to the joint PDF of the mixture fraction, Z, and the progress variable, C. In this way one does not need to make any assumption about the statistical correlation between Z and C and about the behaviour of the mixture fraction, as required in previous FPV models. In fact, for state-of-the-art models, with the assumption of very-fast-chemistry,Z is widely accepted to behave as a passive scalar characterized by a $\\beta$-distribution function. Instead, the model proposed here, evaluates the most probable joint distribution of Z and C without any assumption on their behaviour and provides an effective tool to verify the adequateness of widely used hypotheses, such as their statistical independence. The model is validated versus three well-known test cases, namely, the Sandia flames. The results are compared with those obtained by ...

Coclite, Alessandro; De Palma, Pietro; Cutrone, Luigi

2013-01-01T23:59:59.000Z

47

Extended Foerster-Dexter model for correlated donor-acceptor placement in solid state materials  

Science Conference Proceedings (OSTI)

The current theory of donor-acceptor interactions in solid-state materials is based on a random distribution of donors and acceptors through the crystal. In this paper, we present a model to calculate the observable transfer rates for the correlated positioning of donors and acceptors in laser materials. Chemical effects leading to such correlations are discussed.

Rotman, S.R.; Hartmann, F.X.

1987-09-25T23:59:59.000Z

48

Study of lattice QCD form factors using the extended Gari-Kruempelmann model  

Science Conference Proceedings (OSTI)

We explore the suitability of a modern vector meson dominance (VMD) model as a method for chiral extrapolation of nucleon electromagnetic form factor simulations in lattice QCD. It is found that the VMD fits to experimental data can be readily generalized to describe the lattice simulations. However, the converse is not true. That is, the VMD form is unsuitable as a method of extrapolation of lattice simulations at large quark mass to the physical regime.

Matevosyan, Hrayr H. [Louisiana State University, Department of Physics and Astronomy, 202 Nicholson Hall, Tower Dr., Baton Rouge, Louisiana 70803 (United States); Thomas Jefferson National Accelerator Facility, 12000 Jefferson Ave., Newport News, Virginia 23606 (United States); Laboratory of Theoretical Physics, JINR, Dubna (Russian Federation); Thomas, Anthony W. [Thomas Jefferson National Accelerator Facility, 12000 Jefferson Ave., Newport News, Virginia 23606 (United States); Miller, Gerald A. [University of Washington, Department of Physics, Box 351560, Seattle, Washington 98195-1560 (United States)

2005-12-15T23:59:59.000Z

49

Rate of reduction of ore-carbon composites: Part II. Modeling of reduction in extended composites  

Science Conference Proceedings (OSTI)

A new process for ironmaking was proposed using a rotary hearth furnace and an iron bath smelter to produce iron employing wood charcoal as an energy source and reductant. This paper examines reactions in composite pellet samples with sizes close to sizes used in industrial practice (10 to 16 min in diameter). A model was constructed using the combined kinetic mechanism developed in Part I of this series of articles along with equations for the computation of pellet temperature and shrinkage during the reaction. The analysis of reaction rates measured for pellets with wood charcoal showed that heat transfer plays a significant role in their overall rate of reaction at elevated temperatures. The slower rates measured in pellets containing coal char show that the intrinsic kinetics of carbon oxidation is more significant than heat transfer. Model calculations suggest that the rates are highly sensitive to the thermal conductivity of pellets containing wood charcoal and are less sensitive to the external conditions of heat transfer. It was seen that the changes in pellet surface area and diameter due to shrinkage introduce little change on reaction rates. The model developed provides an adequate description of pellets of wood charcoal up to circa 90% of reduction. Experimentally determined rates of reduction of iron oxide by wood charcoal were approximately 5 to 10 times faster than rates measured in pellets with coal char.

Fortini, O.M.; Fruehan, R.J. [US Steel Research & Technological Center, Monroeville, PA (United States)

2005-12-01T23:59:59.000Z

50

The Climatology of the Middle Atmosphere in a Vertically Extended Version of the Met Office’s Climate Model. Part II: Variability  

Science Conference Proceedings (OSTI)

Stratospheric variability is examined in a vertically extended version of the Met Office global climate model. Equatorial variability includes the simulation of an internally generated quasi-biennial oscillation (QBO) and semiannual oscillation (...

Scott M. Osprey; Lesley J. Gray; Steven C. Hardiman; Neal Butchart; Andrew C. Bushell; Tim J. Hinton

2010-11-01T23:59:59.000Z

51

Well-posedness of an extended model for water-ice phase transitions  

E-Print Network (OSTI)

We propose an improved model explaining the occurrence of high stresses due to the difference in specific volumes during phase transitions between water and ice. The unknowns of the resulting evolution problem are the absolute temperature, the volume increment, and the liquid fraction. The main novelty here consists in including the dependence of the specific heat and of the speed of sound upon the phase. These additional nonlinearities bring new mathematical difficulties which require new estimation techniques based on Moser iteration. We establish the existence of a global solution to the corresponding initial-boundary value problem, as well as lower and upper bounds for the absolute temperature. Assuming constant heat conductivity, we also prove uniqueness and continuous data dependence of the solution.

Krejci, Pavel

2011-01-01T23:59:59.000Z

52

Extended defense systems :I. adversary-defender modeling grammar for vulnerability analysis and threat assessment.  

SciTech Connect

Vulnerability analysis and threat assessment require systematic treatments of adversary and defender characteristics. This work addresses the need for a formal grammar for the modeling and analysis of adversary and defender engagements of interest to the National Nuclear Security Administration (NNSA). Analytical methods treating both linguistic and numerical information should ensure that neither aspect has disproportionate influence on assessment outcomes. The adversary-defender modeling (ADM) grammar employs classical set theory and notation. It is designed to incorporate contributions from subject matter experts in all relevant disciplines, without bias. The Attack Scenario Space U{sub S} is the set universe of all scenarios possible under physical laws. An attack scenario is a postulated event consisting of the active engagement of at least one adversary with at least one defended target. Target Information Space I{sub S} is the universe of information about targets and defenders. Adversary and defender groups are described by their respective Character super-sets, (A){sub P} and (D){sub F}. Each super-set contains six elements: Objectives, Knowledge, Veracity, Plans, Resources, and Skills. The Objectives are the desired end-state outcomes. Knowledge is comprised of empirical and theoretical a priori knowledge and emergent knowledge (learned during an attack), while Veracity is the correspondence of Knowledge with fact or outcome. Plans are ordered activity-task sequences (tuples) with logical contingencies. Resources are the a priori and opportunistic physical assets and intangible attributes applied to the execution of associated Plans elements. Skills for both adversary and defender include the assumed general and task competencies for the associated plan set, the realized value of competence in execution or exercise, and the opponent's planning assumption of the task competence.

Merkle, Peter Benedict

2006-03-01T23:59:59.000Z

53

Pressure Calculation in Polar and Charged Systems using Ewald Summation Results for the Extended Simple Point Charge Model of Water  

E-Print Network (OSTI)

Ewald summation and physically equivalent methods such as particle-mesh Ewald, kubic-harmonic expansions, or Lekner sums are commonly used to calculate long-range electrostatic interactions in computer simulations of polar and charged substances. The calculation of pressures in such systems is investigated. We find that the virial and thermodynamic pressures differ because of the explicit volume dependence of the effective, resummed Ewald potential. The thermodynamic pressure, obtained from the volume derivative of the Helmholtz free energy, can be expressed easily for both ionic and rigid molecular systems. For a system of rigid molecules, the electrostatic energy and the forces at the atom positions are required, both of which are readily available in molecular dynamics codes. We then calculate the virial and thermodynamic pressures for the extended simple point charge (SPC/E) water model at standard conditions. We find that the thermodynamic pressure exhibits considerably less system size dependence than t...

Hummer, G; Neumann, M; Hummer, Gerhard; Gr{ø}nbech-Jensen, Niels; Neumann, Martin

1998-01-01T23:59:59.000Z

54

Pressure Calculation in Polar and Charged Systems using Ewald Summation: Results for the Extended Simple Point Charge Model of Water  

E-Print Network (OSTI)

Ewald summation and physically equivalent methods such as particle-mesh Ewald, kubic-harmonic expansions, or Lekner sums are commonly used to calculate long-range electrostatic interactions in computer simulations of polar and charged substances. The calculation of pressures in such systems is investigated. We find that the virial and thermodynamic pressures differ because of the explicit volume dependence of the effective, resummed Ewald potential. The thermodynamic pressure, obtained from the volume derivative of the Helmholtz free energy, can be expressed easily for both ionic and rigid molecular systems. For a system of rigid molecules, the electrostatic energy and the forces at the atom positions are required, both of which are readily available in molecular dynamics codes. We then calculate the virial and thermodynamic pressures for the extended simple point charge (SPC/E) water model at standard conditions. We find that the thermodynamic pressure exhibits considerably...

Gerhard Hummer; Niels Grønbech-Jensen; Martin Neumann

1998-01-01T23:59:59.000Z

55

Conditional solvation of isoleucine in model extended and helical peptides: context dependence of hydrophobic hydration and the failure of the group-transfer model  

E-Print Network (OSTI)

The hydration thermodynamics of the GXG tripeptide relative to the reference GGG defines the \\textit{conditional} hydration contribution of X. This quantity or the hydration thermodynamics of a small molecule analog of the side-chain or some combination of such estimates, have anchored the interpretation of many of the seminal experiments on protein stability and folding and in the genesis of the current views on dominant interactions stabilizing proteins. We show that such procedures to model protein hydration have significant limitations. We study the conditional hydration thermodynamics of the isoleucine side-chain in an extended pentapeptide and in helical deca-peptides, using as appropriate an extended penta-glycine or appropriate helical deca-peptides as reference. Hydration of butane in the gauche conformation provides a small molecule reference for the side-chain. We use the quasichemical theory to parse the hydration thermodynamics into chemical, packing, and long-range interaction contributions. The...

Tomar, Dheeraj; Pettitt, B M; Asthagiri, D

2013-01-01T23:59:59.000Z

56

New extended atomic data in cool star model atmospheres - Using Kurucz's new iron data in MAFAGS-OS models  

E-Print Network (OSTI)

Context. Cool star model atmospheres are a common tool for the investigation of stellar masses, ages and elemental abundance composition. Theoretical atmospheric models strongly depend on the atomic data used when calculating them. Aims. We present the changes in flux and temperature stratification when changing from iron data computed by R.L. Kurucz in the mid 90s to the Kurucz 2009 iron computations. Methods. MAFAGS-OS opacity sampling atmospheres were recomputed with Kurucz 2009 iron atomic data as implemented in the VALD database by Ryabchikova. Temperature stratification and emergent flux distribution of the new version, called MAFAGS-OS9, is compared to the former version and to solar flux measurements. Results. Using the Kurucz line lists converted into the VALD format and new bound-free opacities for Mg i and Al i leads to changes in the solar temperature stratification by not more than 28 K. At the same time, the calculated solar flux distribution shows significantly better agreement between observat...

Grupp, F; Tan, K

2009-01-01T23:59:59.000Z

57

Pressure Calculation in Polar and Charged Systems using Ewald Summation: Results for the Extended Simple Point Charge Model of Water  

E-Print Network (OSTI)

Ewald summation and physically equivalent methods such as particle-mesh Ewald, kubic-harmonic expansions, or Lekner sums are commonly used to calculate long-range electrostatic interactions in computer simulations of polar and charged substances. The calculation of pressures in such systems is investigated. We find that the virial and thermodynamic pressures differ because of the explicit volume dependence of the effective, resummed Ewald potential. The thermodynamic pressure, obtained from the volume derivative of the Helmholtz free energy, can be expressed easily for both ionic and rigid molecular systems. For a system of rigid molecules, the electrostatic energy and the forces at the atom positions are required, both of which are readily available in molecular dynamics codes. We then calculate the virial and thermodynamic pressures for the extended simple point charge (SPC/E) water model at standard conditions. We find that the thermodynamic pressure exhibits considerably less system size dependence than the virial pressure. From an analysis of the cross correlation between the virial and thermodynamic pressure, we conclude that the thermodynamic pressure should be used to drive volume fluctuations in constant-pressure simulations.

Gerhard Hummer; Niels Grønbech-Jensen; Martin Neumann

1998-06-23T23:59:59.000Z

58

Pressure calculation in polar and charged systems using Ewald summation: Results for the extended simple point charge model of water  

SciTech Connect

Ewald summation and physically equivalent methods such as particle-mesh Ewald, kubic-harmonic expansions, or Lekner sums are commonly used to calculate long-range electrostatic interactions in computer simulations of polar and charged substances. The calculation of pressures in such systems is investigated. We find that the virial and thermodynamic pressures differ because of the explicit volume dependence of the effective, resummed Ewald potential. The thermodynamic pressure, obtained from the volume derivative of the Helmholtz free energy, can be expressed easily for both ionic and rigid molecular systems. For a system of rigid molecules, the electrostatic energy and the forces at the atom positions are required, both of which are readily available in molecular dynamics codes. We then calculate the virial and thermodynamic pressures for the extended simple point charge (SPC/E) water model at standard conditions. We find that the thermodynamic pressure exhibits considerably less system size dependence than the virial pressure. From an analysis of the cross correlation between the virial and thermodynamic pressure, we conclude that the thermodynamic pressure should be used to drive volume fluctuations in constant-pressure simulations. {copyright} {ital 1998 American Institute of Physics.}

Hummer, G.; Gro/nbech-Jensen, N. [Theoretical Division, MS K710, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Neumann, M. [Institut fuer Experimentalphysik, Universitaet Wien, A-1090 Vienna (Austria)] [Institut fuer Experimentalphysik, Universitaet Wien, A-1090 Vienna (Austria)

1998-08-01T23:59:59.000Z

59

Models for aqueous electrolyte mixtures for systems extending from dilute range to the fused salt: Evaluation of parameters to high temperatures and pressures  

DOE Green Energy (OSTI)

Models based on general equations for the excess Gibbs energy of the aqueous fluid provide thermodynamically consistent structures for evaluating and predicting aqueous electrolyte properties. These equations yield other quantities upon appropriate differentiation, including osmotic and activity coefficients, excess enthalpies, heat capacities, and volumes. For this reason a wide array of experimental data are available from which model parameters and their temperature or pressure dependence can be evaluated. For systems of moderate concentration, the most commonly used model at present is the ion-interaction approach and coworkers. For more concentrated solutions, including those extending to the fused salt, an alternate model based on a Margules-expansion and commonly used for nonelectrolytes was proposed. We discuss these two models and give examples of parameter evaluations for some geologically relevant systems to high temperatures and pressures; also we show applications of the models to calculations of solubility equilibria.

Pabalan, R.T.; Pitzer, K.S.

1988-09-01T23:59:59.000Z

60

Sequential Assimilation of ERS-1 SAR Data into a Coupled Land Surface–Hydrological Model Using an Extended Kalman Filter  

Science Conference Proceedings (OSTI)

A first attempt to sequentially assimilate European Space Agency (ESA) Remote Sensing Satellite (ERS) synthetic aperture radar (SAR) estimations of surface soil moisture in the production scheme of a lumped rainfall–runoff model has been ...

C. Francois; A. Quesney; C. Ottlé

2003-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

A Comparison between Raw Ensemble Output, (Modified) Bayesian Model Averaging, and Extended Logistic Regression Using ECMWF Ensemble Precipitation Reforecasts  

Science Conference Proceedings (OSTI)

Using a 20-yr ECMWF ensemble reforecast dataset of total precipitation and a 20-yr dataset of a dense precipitation observation network in the Netherlands, a comparison is made between the raw ensemble output, Bayesian model averaging (BMA), and ...

Maurice J. Schmeits; Kees J. Kok

2010-11-01T23:59:59.000Z

62

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

E-Print Network (OSTI)

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

Guenther, A. B.

63

Laboratory H2O:CO2 ice desorption data: entrapment dependencies and its parameterization with an extended three-phase model  

E-Print Network (OSTI)

Ice desorption affects the evolution of the gas-phase chemistry during the protostellar stage, and also determines the chemical composition of comets forming in circumstellar disks. From observations, most volatile species are found in H2O-dominated ices. The aim of this study is first to experimentally determine how entrapment of volatiles in H2O ice depends on ice thickness, mixture ratio and heating rate, and second, to introduce an extended three-phase model (gas, ice surface and ice mantle) to describe ice mixture desorption with a minimum number of free parameters. Thermal H2O:CO2 ice desorption is investigated in temperature programmed desorption experiments of thin (10 - 40 ML) ice mixtures under ultra-high vacuum conditions. Desorption is simultaneously monitored by mass spectrometry and reflection-absorption infrared spectroscopy. The H2O:CO2 experiments are complemented with selected H2O:CO, and H2O:CO2:CO experiments. The results are modeled with rate equations that connect the gas, ice surface an...

Fayolle, Edith C; Cuppen, Herma M; Visser, Ruud; Linnartz, Harold; 10.1051/0004-6361/201016121

2011-01-01T23:59:59.000Z

64

Quantum extended crystal PDE's  

E-Print Network (OSTI)

Our recent results on {\\em extended crystal PDE's} are generalized to PDE's in the category $\\mathfrak{Q}_S$ of quantum supermanifolds. Then obstructions to the existence of global quantum smooth solutions for such equations are obtained, by using algebraic topologic techniques. Applications are considered in details to the quantum super Yang-Mills equations. Furthermore, our geometric theory of stability of PDE's and their solutions, is also generalized to quantum extended crystal PDE's. In this way we are able to identify quantum equations where their global solutions are stable at finite times. These results, are also extended to quantum singular (super)PDE's, introducing ({\\em quantum extended crystal singular (super) PDE's}).

Agostino Prástaro

2011-05-01T23:59:59.000Z

65

Battery life extender  

SciTech Connect

A battery life extender is described which comprises: (a) a housing disposed around the battery with terminals of the battery extending through top of the housing so that battery clamps can be attached thereto, the housing having an access opening in the top thereof; (b) means for stabilizing temperature of the battery within the housing during hot and cold weather conditions so as to extend operating life of the battery; and (c) a removable cover sized to fit over the access opening in the top of the housing so that the battery can be serviced without having to remove the housing or any part thereof.

Foti, M.; Embry, J.

1989-06-20T23:59:59.000Z

66

Extending the resynchronization attack  

Science Conference Proceedings (OSTI)

Synchronous stream ciphers need perfect synchronization between sender and receiver. In practice, this is ensured by a resync mechanism. Daemen et al. [10] first described attacks on ciphers using such a resync mechanism. In this paper, we extend their ...

Frederik Armknecht; Joseph Lano; Bart Preneel

2004-08-01T23:59:59.000Z

67

Extendable pipe crawler  

DOE Patents (OSTI)

A pipe crawler is described having a front leg assembly and a back leg assembly connected together by two air cylinders, each leg assembly having four extendable legs and a pair of actuators for sliding the extendable legs radially outward to increase the range of the legs when the pipe crawler enters a section of a pipe having a larger diameter. The crawler crawls by inchworm'-like motion, the front leg assembly and back leg assembly alternately engaging and disengaging the wall of the pipe to hold the pipe crawler as the air cylinders alternately advance the front leg assembly and bring up the rear leg assembly. The pair of actuators of each leg assembly are parallel, adjacent and opposing acting so that each slides two adjacent extendable legs radially outward. 5 figures.

Hapstack, M.

1991-05-28T23:59:59.000Z

68

Extendable pipe crawler  

DOE Patents (OSTI)

A pipe crawler having a front leg assembly and a back leg assembly connected together by two air cylinders, each leg assembly having four extendable legs and a pair of actuators for sliding the extendable legs radically outward to increase the range of the legs when the pipe crawler enters a section of pipe having a larger diameter. The crawler crawls by inchworm''-like motion, the front leg assembly and back leg assembly alternately engaging and disengaging the wall of the pipe to hold the pipe crawler as the air cylinders alternately advance the front leg assembly and bring up the rear leg assembly. The pair of actuators of each leg assembly are parallel, adjacent and opposing acting so that each slides two adjacent extendable legs radially outward. 5 figs.

Hapstack, M.

1990-05-01T23:59:59.000Z

69

facial reduction and extended duals  

E-Print Network (OSTI)

Facial reduction and extended duals Here we study two fundamental approaches ...... denberghe, and Henry Wolkowicz, editors, Handbook of semidefinite ...

70

Quantum melting of charge ice and non-Fermi-liquid behavior: An exact solution for the extended Falicov-Kimball model in the ice-rule limit  

E-Print Network (OSTI)

An exact solution is obtained for a model of itinerant electrons coupled to ice-rule variables on the tetrahedron Husimi cactus, an analogue of the Bethe lattice of corner-sharing tetrahedra. It reveals a quantum critical point with the emergence of non-Fermi-liquid behavior in melting of the "charge ice" insulator. The electronic structure is compared with the numerical results for the pyrochlore-lattice model to elucidate the physics of electron systems interacting with the tetrahedron ice rule.

Masafumi Udagawa; Hiroaki Ishizuka; Yukitoshi Motome

2010-06-04T23:59:59.000Z

71

New results in extended thermodynamics.  

E-Print Network (OSTI)

??The subject of this thesis lays in the context of Extended Thermodynamics. The classical methodology to solve the system of balance equations, in E.T., leads… (more)

Carrisi, Maria Cristina

2008-01-01T23:59:59.000Z

72

Extending the entity grid with entity-specific features  

Science Conference Proceedings (OSTI)

We extend the popular entity grid representation for local coherence modeling. The grid abstracts away information about the entities it models; we add discourse prominence, named entity type and coreference features to distinguish between important ...

Micha Eisner; Eugene Charniak

2011-06-01T23:59:59.000Z

73

Extending algebraic modelling languages for Stochastic Programming  

E-Print Network (OSTI)

production costs, transportation costs, inventory costs for the next month with certainty. For simplicity it is assumed that all costs, production and inventory ...

74

Developing and Extending a Cyberinfrastructure Model  

E-Print Network (OSTI)

is composed of high performance computing systems, massivelandscape of high performance computing presents a similarincrease in high performance computing and high performance

Alvarez, Rosio

2010-01-01T23:59:59.000Z

75

Extender for securing a closure  

DOE Patents (OSTI)

An apparatus for securing a closure such as door or a window that opens and closes by movement relative to a fixed structure such as a wall or a floor. Many embodiments provide a device for relocating a padlock from its normal location where it secures a fastener (such as a hasp) to a location for the padlock that is more accessible for locking and unlocking the padlock. Typically an extender is provided, where the extender has a hook at a first end that is disposed through the eye of the staple of the hasp, and at an opposing second end the extender has an annulus, such as a hole in the extender or a loop or ring affixed to the extender. The shackle of the padlock may be disposed through the annulus and may be disposed through the eye of a second staple to secure the door or window in a closed or open position. Some embodiments employ a rigid sheath to enclose at least a portion of the extender. Typically the rigid sheath has an open state where the hook is exposed outside the sheath and a closed state where the hook is disposed within the sheath.

Thomas, II, Patrick A.

2012-10-02T23:59:59.000Z

76

Polymers in anisotropic environment with extended defects  

E-Print Network (OSTI)

The conformational properties of flexible polymers in d dimensions in environments with extended defects are analyzed both analytically and numerically. We consider the case, when structural defects are correlated in \\varepsilon_d dimensions and randomly distributed in the remaining d-\\varepsilon_d. Within the lattice model of self-avoiding random walks (SAW), we apply the pruned enriched Rosenbluth method (PERM) and find the estimates for scaling exponents and universal shape parameters of polymers in environment with parallel rod-like defects (\\varepsilon_d=1). An analytical description of the model is developed within the des Cloizeaux direct polymer renormalization scheme.

V. Blavatska; K. Haydukivska

2012-12-17T23:59:59.000Z

77

Adjustable extender for instrument module  

DOE Patents (OSTI)

A blank extender module used to mount an instrument module in front of its console for repair or test purposes has been equipped with a rotatable mount and means for locking the mount at various angles of rotation for easy accessibility. The rotatable mount includes a horizontal conduit supported by bearings within the blank module. The conduit is spring-biased in a retracted position within the blank module and in this position a small gear mounted on the conduit periphery is locked by a fixed pawl. The conduit and instrument mount can be pulled into an extended position with the gear clearing the pawl to permit rotation and adjustment of the instrument.

Sevec, J.B.; Stein, A.D.

1975-11-01T23:59:59.000Z

78

Extending Efficiency Services to Underserved Households: NYSERDA...  

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

Extending Efficiency Services to Underserved Households: NYSERDA's Assisted Home Performance with ENERGY STAR Program Title Extending Efficiency Services to Underserved Households:...

79

Querying Incomplete Data over Extended ER Schemata  

E-Print Network (OSTI)

Since Chen's Entity-Relationship (ER) model, conceptual modeling has been playing a fundamental role in relational data design. In this paper we consider an extended ER (EER) model enriched with cardinality constraints, disjointness assertions, and is-a relations among both entities and relationships. In this setting, we consider the case of incomplete data, which is likely to occur, for instance, when data from different sources are integrated. In such a context, we address the problem of providing correct answers to conjunctive queries by reasoning on the schema. Based on previous results about decidability of the problem, we provide a query answering algorithm that performs rewriting of the initial query into a recursive Datalog query encoding the information about the schema. We finally show extensions to more general settings.

Cali, Andrea

2010-01-01T23:59:59.000Z

80

Speculation  

Gasoline and Diesel Fuel Update (EIA)

of oil shocks in a FAVAR with sign restrictions Shocks: supply, global demand, oil inventory demand, speculation FAVAR: small-scale VAR is not informationally su cient to...

Note: This page contains sample records for the topic "favar extended 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

Pipe crawler with extendable legs  

DOE Patents (OSTI)

This invention is comprised of a pipe crawler for moving through a pipe in inchworm fashion having front and rear leg assemblies separated by air cylinders to increase and decrease the spacing. between assemblies. Each leg of the four legs of an assembly is moved between a wall-engaging, extended position and a retracted position by a separate air cylinder. The air cylinders of the leg assemblies are preferably arranged in pairs of oppositely directed cylinders with no pair laying in the same axial plane as another pair. Therefore, the cylinders can be as long as a leg assembly is wide and the crawler can crawl through sections of pipes where the diameter is twice that of other sections. The crawler carries a valving system, a manifold to distribute air supplied by a single umbilical air hose to the various air cylinders in a sequence controlled electrically by a controller. The crawler also utilizes a rolling mechanism, casters in this case, to reduce friction between the crawler and pipe wall thereby further extending the range of the pipe crawler.

Zollinger, W.T.

1991-04-02T23:59:59.000Z

82

Predictability in the Extended Range  

Science Conference Proceedings (OSTI)

A two-level spherical quasi-geostrophic model is formulated for predictability experiments. The stationary external forcing for this model is calculated from observations. Both barotropic and baroclinic forcings are required in order to achieve a ...

John O. Roads

1987-12-01T23:59:59.000Z

83

Extended Electrodynamics: A Brief Review  

E-Print Network (OSTI)

This paper presents a brief review of the newly developed \\emph{Extended Electrodynamics}. The relativistic and non-relativistic approaches to the extension of Maxwell equations are considered briefly, and the further study is carried out in relativistic terms in Minkowski space-time. The non-linear vacuum solutions are considered and fully described. It is specially pointed out that solitary waves with various, in fact arbitrary, spatial structure and photon-like propagation properties exist. The {\\it null} character of all non-linear vacuum solutions is established and extensively used further. Coordinate-free definitions are given to the important quantities {\\it amplitude} and {\\it phase}. The new quantity, named {\\it scale factor}, is introduced and used as a criterion for availability of rotational component of propagation of some of the nonlinear, i.e. nonmaxwellian, vacuum solutions. The group structure properties of the nonlinear vacuum solutions are analyzed in some detail, showing explicitly the co...

Donev, S; Donev, Stoil; Tashkova, Maria

2004-01-01T23:59:59.000Z

84

Extended shelf-life battery  

SciTech Connect

A lead-acid battery having extended shelf-life is described comprising: a battery housing containing positive and negative lead-acid electrode elements and separators; sulfuric acid electrolyte contained within the housing in a quantity sufficient to maintain the electrode elements in a damp, but not flooded, condition; a desiccant within the housing located out of contact with the elements and in a position to absorb water vapor present in the housing the desiccant being located in container at least a portion of water is permeable to water vapor; the electrode positive and negative materials being formed - that a charge exists on the battery and so that self-discharge reactions will occur within the housing producing water vapor; the electrolyte having a specific gravity ranging from about 1.015 to about 1.320 and the quantity of the desiccant being sufficient to absorb the water vapor created during the self-discharge reactions to maintain the specific gravity of the electrolyte within the range. A method for extending the storage life of a lead-acid battery comprising the steps of: preparing a formed, lead-acid battery including electrode elements and a flooding quantity of sulfuric acid electrolyte; removing from the battery a substantial quantity of the electrolyte to leave damp elements; placing in the battery a quantity of desiccant in a container, at least a portion of which is permeable to water vapor, the container being in a position to absorb water vapor generated in the battery during self-discharge and at a location out of contact with the electrode elements; and controlling the specific gravity of the electrolyte remaining in the battery after the removal step within a range of about 1.015 and 1.320 during discharge reactions by absorbing water vapor produced thereby in the desiccant.

Bullock, N.K.; Symumski, J.S.

1993-06-15T23:59:59.000Z

85

Downscaling Extended Weather Forecasts for Hydrologic Prediction  

SciTech Connect

Weather and climate forecasts are critical inputs to hydrologic forecasting systems. The National Center for Environmental Prediction (NCEP) issues 8-15 days outlook daily for the U.S. based on the Medium Range Forecast (MRF) model, which is a global model applied at about 2? spatial resolution. Because of the relatively coarse spatial resolution, weather forecasts produced by the MRF model cannot be applied directly to hydrologic forecasting models that require high spatial resolution to represent land surface hydrology. A mesoscale atmospheric model was used to dynamically downscale the 1-8 day extended global weather forecasts to test the feasibility of hydrologic forecasting through this model nesting approach. Atmospheric conditions of each 8-day forecast during the period 1990-2000 were used to provide initial and boundary conditions for the mesoscale model to produce an 8-day atmospheric forecast for the western U.S. at 30 km spatial resolution. To examine the impact of initialization of the land surface state on forecast skill, two sets of simulations were performed with the land surface state initialized based on the global forecasts versus land surface conditions from a continuous mesoscale simulation driven by the NCEP reanalysis. Comparison of the skill of the global and downscaled precipitation forecasts in the western U.S. showed higher skill for the downscaled forecasts at all precipitation thresholds and increasingly larger differences at the larger thresholds. Analyses of the surface temperature forecasts show that the mesoscale forecasts generally reduced the root-mean-square error by about 1.5 C compared to the global forecasts, because of the much better resolved topography at 30 km spatial resolution. In addition, initialization of the land surface states has large impacts on the temperature forecasts, but not the precipitation forecasts. The improvements in forecast skill using downscaling could be potentially significant for improving hydrologic forecasts for managing river basins.

Leung, Lai-Yung R.; Qian, Yun

2005-03-01T23:59:59.000Z

86

The Physics Case for Extended Tevatron Running  

SciTech Connect

Run II of the Tevatron collider at Fermilab is currently scheduled to end late in 2011. Given the current performance of the collider and of the CDF and D0 detectors, it is estimated that the current data set could be approximately doubled with a run extended into 2014. A few examples are presented of the physics potential of these additional statistics. These are discussed in the context of the expected reach of the LHC 7 TeV data and the existing Tevatron data. In particular, an extraordinary opportunity is described which could probe the existence of a standard model Higgs boson with mass in the currently preferred region between 115 GeV and 150 GeV.

Wood, Darien R.

2010-11-01T23:59:59.000Z

87

Extended foil capacitor with radially spoked electrodes  

DOE Patents (OSTI)

An extended foil capacitor has a conductive disk electrically connected in noncrushing contact to the extended foil. A conductive paste is placed through spaces between radial spokes on the disk to electrically and mechanically connect the extended foil to the disk.

Foster, J.C.

1989-04-20T23:59:59.000Z

88

Extended Electrodynamics: A Brief Review  

E-Print Network (OSTI)

This paper presents a brief review of the newly developed \\emph{Extended Electrodynamics}. The relativistic and non-relativistic approaches to the extension of Maxwell equations are considered briefly, and the further study is carried out in relativistic terms in Minkowski space-time. The non-linear vacuum solutions are considered and fully described. It is specially pointed out that solitary waves with various, in fact arbitrary, spatial structure and photon-like propagation properties exist. The {\\it null} character of all non-linear vacuum solutions is established and extensively used further. Coordinate-free definitions are given to the important quantities {\\it amplitude} and {\\it phase}. The new quantity, named {\\it scale factor}, is introduced and used as a criterion for availability of rotational component of propagation of some of the nonlinear, i.e. nonmaxwellian, vacuum solutions. The group structure properties of the nonlinear vacuum solutions are analyzed in some detail, showing explicitly the connection of the vacuum solutions with some complex valued functions. Connection-curvature interpretations are given and a special attention is paid to the curvature interpretation of the intrinsic rotational (spin) properties of some of the nonlinear solutions. Several approaches to coordinate-free local description and computation of the integral spin momentum are considered. Finally, a large family of nonvacuum spatial soliton-like solutions is explicitly written down, and a procedure to get (3+1) versions of the known (1+1) soliton solutions is obtained.

Stoil Donev; Maria Tashkova

2004-03-24T23:59:59.000Z

89

Extended Storage Collaboration Program International Subcommittee Report  

Science Conference Proceedings (OSTI)

With the prospect of spent nuclear fuel being stored at reactor sites for the foreseeable future, EPRI established the Extended Storage Collaboration Program (ESCP) in 2009 to investigate aging effects and mitigation options for the extended storage and transportation of spent nuclear fuel. ESCP’s International Subcommittee developed this summary of the regulatory status, operational status, fuel inventory, and technical gaps identified for extended storage of spent fuel for each ...

2012-11-12T23:59:59.000Z

90

Optimization Online - Column Generation for Extended Formulations  

E-Print Network (OSTI)

Jul 8, 2011 ... We compare numerically a direct handling of the extended formulation, a standard column generation approach, and the ``column-and-row ...

91

State-Aware Performance Analysis with eXtended Stochastic Probes  

Science Conference Proceedings (OSTI)

We define a mechanism for specifying performance queries which combine instantaneous observations of model states and finite sequences of observations of model activities. We realise these queries by composing the state-aware observers (called eXtended ...

Allan Clark; Stephen Gilmore

2008-08-01T23:59:59.000Z

92

Apparatus and methods for a human extender  

SciTech Connect

A human extender controller for interface between a human operator and a physical object through a physical plant. The human extender controller uses an inner-feedback loop to increase the equivalent damping of the operating system to stabilize the system when it contacts with the environment and reduces the impact of the environment variation by utilizing a high feedback gain, determined by a root locus sketch. Because the stability of the human extender controller of the present invention is greatly enhanced over that of the prior art, the present invention is able to achieve a force reflection ratio 500 to 1 and capable of handling loads above the two (2) ton range.

Jansen, John F. (Knoxville, TN)

2001-01-01T23:59:59.000Z

93

Examples of Extended Empirical Orthogonal Function Analyses  

Science Conference Proceedings (OSTI)

An extended empirical orthogonal function analysis technique is described which expands a data set in terms of functions which are the “best” representation of that data set for a sequence of time points. The method takes advantage of the fact ...

Bryan C. Weare; John S. Nasstrom

1982-06-01T23:59:59.000Z

94

Strategic control in the extended enterprise  

Science Conference Proceedings (OSTI)

The strategic role of information systems in "extending" the enterprise is examined. A number of issues emergea s essential considerations in the strategic alignment of the investment in information technology and business strategy. Information technologies ...

B. R. Konsynski

1993-01-01T23:59:59.000Z

95

Shock wave formation in Rosenau's extended hydrodynamics  

E-Print Network (OSTI)

We study the extended hydrodynamics proposed by Philip Rosenau [Phys. Rev. A 40, 7193 (1989)] in the context of a regularization of the Chapman-Enskog expansion. We are able to prove that shock waves appear in finite time in Rosenau's extended Burgers' equation, and we discuss the physical implications of this fact and its connection with a possible extension of hydrodynamics to the short wavelength domain.

Carlos Escudero

2004-12-30T23:59:59.000Z

96

Fast relaxation phenomena and slow mode in extended thermodynamics of superfluids  

Science Conference Proceedings (OSTI)

A macroscopic monofluid model of liquid helium II which is based on extended thermodynamics was formulated in previous works, both in the presence and in the absence of dissipative phenomena. In all these studies, the time evolution of the nonequilibrium ... Keywords: Extended thermodynamics, Liquid helium II, Superfluids

M. S. Mongioví; R. A. Peruzza

2003-08-01T23:59:59.000Z

97

Extended Defects in Cdznte Radiation Detectors  

Science Conference Proceedings (OSTI)

Large-volume CdZnTe (CZT) single crystals with electron lifetime exceeding 10 mus have recently become commercially available. This opened the opportunity for making room temperature CZT gamma-ray detectors with extended thicknesses and larger effective areas. However, the extended defects that are present even in the highest-quality material remain a major drawback which affects the availability and cost of large CZT detectors. In contrast to the point defects that control electron lifetime and whose effects on the charge collection can be electronically corrected, the extended defects introduce significant fluctuations in the collected charge, which increase with a crystal's thickness. The extended defects limit the uniformity in the electrons' drift distance in CZT crystals, above which electron trapping cannot effectively be corrected. In this paper, we illustrate the roles of the extended defects in CZT detectors with different geometries. We emphasize that the crystallinity of commercial CZT materials remains a major obstacle on the path to developing thick, large-volume CZT detectors for gamma-ray imaging and spectroscopy.

Bolotnikov, A.; Babalola, S; Camarda, G; Chen, H; Awadalla, S; Cui, Y; Egarievwe, S; Fochuk, P; Hawrami, R; et. al.

2009-01-01T23:59:59.000Z

98

Extended-Range Probabilistic Forecasts of Ganges and Brahmaputra Floods in Bangladesh  

Science Conference Proceedings (OSTI)

The authors have developed a new extended-range flood forecasting system for large river basins that uses satellite data and statistically rendered probabilistic weather and climate predictions to initialize basin-scale hydrological models. The ...

Peter J. Webster; Jun Jian; Thomas M. Hopson; Carlos D. Hoyos; Paula A. Agudelo; Hai-Ru Chang; Judith A. Curry; Robert L. Grossman; Timothy N. Palmer; A. R. Subbiah

2010-11-01T23:59:59.000Z

99

Sensitivity of the Systematic Error of Extended Range Forecasts to Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The sensitivity of the systematic error of extended-range forecasts to sea surface temperature (SST) anomalies is investigated. General circulation model (GCM) experiments were performed to quantify error patterns for warm, normal, and cold SST ...

Kingtse C. Mo; X. L. Wang

1995-06-01T23:59:59.000Z

100

Extended Chaos Theory and Multiparticle Production  

E-Print Network (OSTI)

First, using the method of the soliton-solution, the fermion probability density equation, which corresponds to the Dirac equation, is derived. Next, we extend the chaos theory, in which the period bifurcation is equivalent to the particle production. Then this extended chaos theory can be used for description of the multiparticle production and the extensive air showers at high energy. Let the parameter takes a suitable value, the quantitative results will be obtained, and an approximate formula will be derived. Many properties of the multiparticle production and of the chaos theory are universal.

Yi-Fang Chang

2008-08-02T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Motion of extended charges in classical electrodynamics  

SciTech Connect

The Lorentz--Dirac theory of radiation reaction on the motion of point charges is beset by the well known problems of runaway solutions and preacceleration. We examine the classical theory of extended charged particles and obtain a differential-difference type equation of motion. Analysis of this equation reveals that the theory is internally consistent (i.e., no runaways or acausality) whenever the size of the particle exceeds the classical radius (defined as the radius for which the electrostatic self-energy equals the mass of the particle). A specific example is presented which explicitly shows the different character of the extended and point charge solutions. (AIP)

Levine, H.; Moniz, E.J.; Sharp, D.H.

1977-01-01T23:59:59.000Z

102

Extending soft sets with description logics  

Science Conference Proceedings (OSTI)

Molodtsov initiated the concept of soft set theory, which can be used as a generic mathematical tool for dealing with uncertainty. Description Logics (DLs) are a family of knowledge representation languages which can be used to represent the terminological ... Keywords: Description logics, Extended soft sets, Soft sets, Terminology

Yuncheng Jiang; Yong Tang; Qimai Chen; Ju Wang; Suqin Tang

2010-03-01T23:59:59.000Z

103

SF STATE Extended Learning INFORMATION SYSTEMS (GIS)  

E-Print Network (OSTI)

, state agencies such as the Department of Fish and Game, and federal agencies such as the US ForestSF STATE Extended Learning 2013/2014 GEOGRAPHIC INFORMATION SYSTEMS (GIS) at San Francisco State of environmental decision making is being increasingly relied upon by businesses and agencies in Northern

104

SF STATE Extended Learning SPANISH/ENGLISH  

E-Print Network (OSTI)

skills necessary for service in the courts, in state agencies, and in the medical evaluation system and freelance for state agencies, health organiza- tions, private companies, law firms, and interpretingSF STATE Extended Learning 2013/2014 SPANISH/ENGLISH INTERPRETATION (SEI) ACADEMIC CERTIFICATE

105

Unification of Concept Terms --Extended Abstract --  

E-Print Network (OSTI)

Unification of Concept Terms -- Extended Abstract -- Franz Baader \\Lambda LuFg Theoretical Computer of the domain can be described by concept terms, i.e., expressions that are built from atomic concepts (unary. The atomic concepts and concept terms represent sets of individuals, whereas roles represent binary relations

Baader, Franz

106

SF STATE Extended Learning EXECUTIVE CERTIFICATE  

E-Print Network (OSTI)

Participants in the certificate program must have a four-year degree or equivalent work experience. AnySF STATE Extended Learning 2013/2014 EXECUTIVE CERTIFICATE in FINANCIAL PLANNING PROGRAM FREE as a webcast. For exact dates and times, visit www.cel.sfsu.edu/financial. · Learn about the program · Meet

107

Quantum one-time programs (extended abstract)  

E-Print Network (OSTI)

Quantum one-time programs (extended abstract) Anne Broadbent1 , Gus Gutoski2 , and Douglas Stebila3 1 Institute for Quantum Computing and Department of Combinatorics and Optimization University of Waterloo, Waterloo, Ontario, Canada albroadb@iqc.ca 2 Institute for Quantum Computing and School

International Association for Cryptologic Research (IACR)

108

RTP Control Protocol Extended Reports (RTCP XR)  

Science Conference Proceedings (OSTI)

This document defines the Extended Report (XR) packet type for the RTP Control Protocol (RTCP), and defines how the use of XR packets can be signaled by an application if it employs the Session Description Protocol (SDP). XR packets are composed of ...

T. Friedman; R. Caceres; A. Clark

2003-11-01T23:59:59.000Z

109

A Research on Engine Speed Control for Extended-range Electric Vehicle  

Science Conference Proceedings (OSTI)

in the powertrain of extended-rang electric vehicle, an optimum operating point is needed for improving the efficiency of the engine. In this paper, base on the physical model and practical data of engine, a nonlinear engine model was built. Then use ... Keywords: Electric Vehicle, Engine Modeling, Engine Speed, enDYNA

Yan Jing, Zhiyuan Liu

2012-07-01T23:59:59.000Z

110

DOE Extends Public Comment Period for the Draft Uranium Leasing...  

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

Other Agencies You are here Home DOE Extends Public Comment Period for the Draft Uranium Leasing Program Programmatic Environmental Impact Statement DOE Extends Public...

111

DOE Extends Public Comment Period for Uranium Program Environmental...  

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

Other Agencies You are here Home DOE Extends Public Comment Period for Uranium Program Environmental Impact Statement DOE Extends Public Comment Period for Uranium...

112

Clinton Extends Moratorium on Nuclear Weapons Testing | National...  

National Nuclear Security Administration (NNSA)

Weapons Testing Clinton Extends Moratorium on Nuclear Weapons Testing July 03, 1993 Washington, DC Clinton Extends Moratorium on Nuclear Weapons Testing President Clinton...

113

EIS-0403: Notice to Extend Public Comment Period | Department...  

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

Notice to Extend Public Comment Period EIS-0403: Notice to Extend Public Comment Period Solar Energy Development in Six Southwestern States The Department of Energy and the Bureau...

114

EIS-0403: Notice to Extend Public Scoping | Department of Energy  

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

Scoping EIS-0403: Notice to Extend Public Scoping Solar Energy Development in Six Southwestern States DOE and BLM (the Agencies) extended the comment period for public scoping for...

115

Topological Phase Transition in the Extended Cluster Compass Ladder  

E-Print Network (OSTI)

We have studied the exact solution of the extended cluster compass ladder, which is equivalent to extended quantum compass model with cluster interaction between next-nearest-neighbor (NNN) spins, by using the Jordan-Wigner transformation. We show that this model is always gapfull except at the critical surfaces where the energy gap disappears. We obtain the analytic expressions of all critical couplings which drive quantum phase transitions. This model shows a rich phase diagram which includes spin-flop, strip antiferromagnetic and topological order on the legs, in addition to the phase with antiparallel ordering of spin y component on the rungs. We study also the universality and scaling properties of the nearest-neighbor correlation functions derivatives in different regions to confirm the results obtained using the energy gap analysis. On the other hand, we have replaced the cluster interaction with usual form and using the Lanczos method a numerical experiment is done. Analyzing the numerical results, we show that the effect of the cluster interaction between NNN spins is completely different from the usual form.

R. Jafari; S. Mahdavifar

2013-10-21T23:59:59.000Z

116

60-DAY Federal Register Notice - Extended  

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

Extension Extension [6450-01-P] DEPARTMENT OF ENERGY Agency Information Collection Extension AGENCY: U.S. Department of Energy ACTION: Notice and Request for Comments SUMMARY: The Department of Energy (DOE), pursuant to the Paperwork Reduction Act of 1995), intends to extend for three years, an information collection request with the Office of Management and Budget (OMB). Comments are invited on: (a) whether the extended collection of information is necessary for the proper performance of the functions of the agency, including whether the information shall have practical utility; (b) the accuracy of the agency's estimate of the burden of the proposed collection of information, including the validity of the methodology and assumptions used; (c) ways to

117

Optimizing Extender Code for NCSX Analyses  

SciTech Connect

Extender is a parallel C++ code for calculating the magnetic field in the vacuum region of a stellarator. The code was optimized for speed and augmented with tools to maintain a specialized NetCDF database. Two parallel algorithms were examined. An even-block work-distribution scheme was comparable in performance to a master-slave scheme. Large speedup factors were achieved by representing the plasma surface with a spline rather than Fourier series. The accuracy of this representation and the resulting calculations relied on the density of the spline mesh. The Fortran 90 module db access was written to make it easy to store Extender output in a manageable database. New or updated data can be added to existing databases. A generalized PBS job script handles the generation of a database from scratch

M. Richman, S. Ethier, and N. Pomphrey

2008-01-22T23:59:59.000Z

118

On chiral symmetry in extended nonlinear supersymmetry  

E-Print Network (OSTI)

We study the equations of the motion for Nambu-Goldstone (NG) fermions in the nonlinear representation of supersymmetry (NLSUSY) and show in N-extended NLSUSY that those equations under massless conditions are satisfied, provided the NG fermions are chiral eigenstates. The physical significance of the result is discussed in the context of NLSUSY general relativity through the relations between nonlinear and linear SUSY theories, which gives a new insight into the chiral symmetry for the low energy particle physics.

Kazunari Shima; Motomu Tsuda

2013-11-18T23:59:59.000Z

119

Extended Longitudinal Scaling: direct evidence of saturation  

E-Print Network (OSTI)

Multiparticle production of charged particles at high energies exhibit the phenomenon of Limiting Fragmentation. Furthermore, the region in rapidity over which the production of particles appears to be independent of energy, increases with energy. It is argued that this phenomenon, known as Extended Longitudinal Scaling, is a direct manifestation of some kind of saturation, akin to that in the Color Glass Condensate picture of particle production.

Wit Busza

2011-02-18T23:59:59.000Z

120

Fastbus cable segment extender based on TTL  

Science Conference Proceedings (OSTI)

A method to drive a FASTBUS cable segment over long distance is described. The signal level transmitted is converted from standard FASTBUS cable segment signal to a TTL differential output; the scheme increases noise immunity. In addition, the receiver has a wide tolerance of common mode range of +/-15 V. By applying a deskewing mechanism in the extender module, we have achieved more than 10/sup 10/ transactions of FASTBUS without any error with a cable length of 100 m.

Ikeda, H.; Yamauchi, M.

1986-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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.


121

Extending an Algebraic Modeling Language to Support Constraint ...  

E-Print Network (OSTI)

the computer receives as data not only numerical values of some parame- ters but ... problems, with the option of automatic conversion to equivalent integer program- ... herein is publicly available from netlib.bell-labs.com/netlib/AMPL/

122

Extending the Model of Residential Water Conservation Nature and Scope  

E-Print Network (OSTI)

d e l of Residential Water Conservation Nature and Scope ByK e y W o r d s : Urban Water conservation and demand, waterof price-induced water conservation with other drought

Corral, Leonardo; Fisher, Anthony; Hatch, Nile W

1995-01-01T23:59:59.000Z

123

From Electromagnetic Duality to Extended Electrodynamics  

E-Print Network (OSTI)

This paper presents the transition from Classical Electrodynamics (CED) to Extended Electrodynamics (EED) from the electromagnetic duality point of view, and emphasizes the role of the canonical complex structure in ${\\cal R}^2$ in, both, nonrelativistic and relativistic formulations of CED and EED. We begin with summarizing the motivations for passing to EED, as well as we motivate and outline the way to be followed in pursuing the right extension of Maxwell equations. Further we give the nonrelativistic and relativistic approaches to the extension and give explicitly the new equations as well as some properties of the nonlinear vacuum solutions.

Donev, S

2001-01-01T23:59:59.000Z

124

From Electromagnetic Duality to Extended Electrodynamics  

E-Print Network (OSTI)

This paper presents the transition from Classical Electrodynamics (CED) to Extended Electrodynamics (EED) from the electromagnetic duality point of view, and emphasizes the role of the canonical complex structure in ${\\cal R}^2$ in, both, nonrelativistic and relativistic formulations of CED and EED. We begin with summarizing the motivations for passing to EED, as well as we motivate and outline the way to be followed in pursuing the right extension of Maxwell equations. Further we give the nonrelativistic and relativistic approaches to the extension and give explicitly the new equations as well as some properties of the nonlinear vacuum solutions.

Stoil Donev

2001-01-20T23:59:59.000Z

125

Extending Document Summarization to Information Graphics  

E-Print Network (OSTI)

Information graphics (non-pictorial graphics such as bar charts or line graphs) are an important component of multimedia documents. Often such graphics convey information that is not contained elsewhere in the document. Thus document summarization must be extended to include summarization of information graphics. This paper addresses our work on graphic summarization. It argues that the message that the graphic designer intended to convey must play a major role in determining the content of the summary, and it outlines our approach to identifying this intended message and using it to construct the summary. 1

Ra Carberry; Stephanie Elzer; Nancy Green; Kathleen Mccoy; Daniel Chester

2004-01-01T23:59:59.000Z

126

Skill and Return of Skill in Dynamic Extended-Range Forecasts  

Science Conference Proceedings (OSTI)

The skill of a set of extended-range dynamical forecasts made with a modern numerical forecast model is examined. A forecast is said to be skillful if it produces a high quality forecast by correctly modeling some aspects of the dynamics of the ...

Jeffrey L. Anderson; Huug M. van den Dool

1994-03-01T23:59:59.000Z

127

The search for extended air showers at the Jicamarca Radio Observatory  

SciTech Connect

This paper presents the status of the project to detect extended air showers at the Jicamarca Radio Observatory. We report on detected anomalous signals and present a toy model to estimate at what altitudes we might expect to see air shower signals. According to this model, a significant number of high altitude horizontal air showers could be observed by radar techniques.

Wahl, D. [Radio Observatorio de Jicamarca, Instituto Geofisico del Peru (Peru); Instituto de Fisica, Universidad Nacional de Ingenieria, Lima (Peru); Chau, J.; Galindo, F.; Huaman, A. [Radio Observatorio de Jicamarca, Instituto Geofisico del Peru (Peru); Solano, C. J. [Instituto de Fisica, Universidad Nacional de Ingenieria, Lima (Peru); Instituto Nacional de Investigacion y Capacitacion de Telecomunicaciones, UNI, Lima (Peru)

2009-04-30T23:59:59.000Z

128

Dynamical Extended Range Forecasting (DERF) at the National Meteorological Center  

Science Conference Proceedings (OSTI)

Early results are presented of an experimental program in Dynamical Extended Range Forecasting at the National Meteorological Center. The primary objective of this program is to assess the feasibility of extending operational numerical weather ...

M. Steven Tracton; Kingtse Mo; Wilbur Chen; Eugenia Kalnay; Robert Kistler; Glenn White

1989-07-01T23:59:59.000Z

129

Low power image based triggering for extended operation surveillance  

E-Print Network (OSTI)

It is desirable for many surveillance applications to have a portable high quality imaging system capable of continuous monitoring in remote locations, often for extended periods of time. Extended operation can be achieved ...

Waldon, Matthew C., 1981-

2004-01-01T23:59:59.000Z

130

Direct Semantics of Extended State Machines  

E-Print Network (OSTI)

In this paper we present semantic profiles for UML 2 state machines, which are based directly upon the structure of a state machine model, without requiring flattening or other transformations on these models. The approach addresses many of the semantic problems identified for state machines, and provides a basis for semantic analysis and proof of behavioural compatibility between state machines. 1

K. Lano; D. Clark

2007-01-01T23:59:59.000Z

131

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

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

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

132

Multi-Flip Networks: Extending Symmetric Networks to Real Parallelism  

E-Print Network (OSTI)

In general, neural networks are regarded as models for massively parallel computation. But very often, this parallelism is rather limited, especially when considering symmetric networks. For instance, Hopfield networks do not really compute in parallel as their updating algorithm always requires sequential execution. Nevertheless, Hopfield networks can be used as auto-associative memories, were shown to have an expressive power equivalent to propositional logic, and can be used to solve several combinatorial problems. Extensions like the Boltzmann Machine with continuous activation functions can additionally be used to solve optimization problems. But, all of these approaches suffer from one disadvantage, namely the impossibility to perform simultaneous computations of more than one unit, i.e. real parallelism. We describe a recurrent network corresponding to a symmetric network and introduce a method of parallel updating multiple units. We show how this may be extended to ...

Antje Strohmaier; Fachgebiet Intellektik; Fachbereich Informatik; Technische Hochschule Darmstadt

1996-01-01T23:59:59.000Z

133

Extending the Sensitivity of Air Cerenkov Telescopes  

E-Print Network (OSTI)

Over the last decade, the Imaging Air Cerenkov technique has proven itself to be an extremely powerful means to study very energetic gamma-radiation from a number of astrophysical sources in a regime which is not practically accessible to satellite-based instruments. The further development of this approach in recent years has generally concentrated on increasing the density of camera pixels, increasing the mirror area and using multiple telescopes. Here we present a practical method to substantially improve the sensitivity of Atmospheric Cerenkov Telescopes using wide-field cameras with a relatively course density of photomultiplier tubes. The 2-telescope design considered here is predicted to be more than ~3 times more sensitive than existing/planned arrays in the regime above 300 GeV for continuously emitting sources; up to ~10 times more sensitive for hour-scale emission (relevant for episodic sources, such as AGN); significantly more sensitive in the regime above 10 TeV; and possessing a sky coverage which is roughly an order of magnitude larger than existing instruments. It should be possible to extend this approach for even further improvement in sensitivity and sky coverage.

I. de la Calle Perez; S. D. Biller

2006-02-13T23:59:59.000Z

134

Tempest gas turbine extends EGT product line  

SciTech Connect

With the introduction of the 7.8 MW (mechanical output) Tempest gas turbine, ECT has extended the company`s line of its small industrial turbines. The new Tempest machine, featuring a 7.5 MW electric output and a 33% thermal efficiency, ranks above the company`s single-shaft Typhoon gas turbine, rated 3.2 and 4.9 MW, and the 6.3 MW Tornado gas turbine. All three machines are well-suited for use in combined heat and power (CHP) plants, as demonstrated by the fact that close to 50% of the 150 Typhoon units sold are for CHP applications. This experience has induced EGT, of Lincoln, England, to announce the introduction of the new gas turbine prior to completion of the testing program. The present single-shaft machine is expected to be used mainly for industrial trial cogeneration. This market segment, covering the needs of paper mills, hospitals, chemical plants, ceramic industry, etc., is a typical local market. Cogeneration plants are engineered according to local needs and have to be assisted by local organizations. For this reason, to efficiently cover the world market, EGT has selected a number of associates that will receive from Lincoln completely engineered machine packages and will engineer the cogeneration system according to custom requirements. These partners will also assist the customer and dispose locally of the spares required for maintenance operations.

Chellini, R.

1995-07-01T23:59:59.000Z

135

Coupled and Extended Quintessence: theoretical differences and structure formation  

E-Print Network (OSTI)

The case of a coupling between dark energy and matter (Coupled Quintessence) or gravity (Extended Quintessence) has recently attracted a deep interest and has been widely investigated both in the Einstein and in the Jordan frames (EF, JF), within scalar tensor theories. Focusing on the simplest models proposed so far, in this paper we study the relation existing between the two scenarios, isolating the Weyl scaling which allows to express them in the EF and JF. Moreover, we perform a comparative study of the behavior of linear perturbations in both scenarios, which turn out to behave in a markedly different way. In particular, while the clustering is enhanced in the considered CQ models with respect to the corresponding Quintessence ones where the coupling is absent and to the ordinary cosmologies with a Cosmological Constant and Cold Dark Matter (LCDM), structures in EQ models may grow slower. This is likely to have direct consequences on the inner properties of non-linear structures, like cluster concentration, as well as on the weak lensing shear on large scales. Finally, we specialize our study for interfacing linear dynamics and N-body simulations in these cosmologies, giving a recipe for the corrections to be included in N-body codes in order to take into account the modifications to the expansion rate, growth of structures, and strength of gravity.

Valeria Pettorino; Carlo Baccigalupi

2008-02-08T23:59:59.000Z

136

Dynamic Analysis of Wind Turbine Planetary Gears Using an Extended Harmonic Balance Approach: Preprint  

DOE Green Energy (OSTI)

The dynamics of wind turbine planetary gears with gravity effects are investigated using an extended harmonic balance method that extends established harmonic balance formulations to include simultaneous internal and external excitations. The extended harmonic balance method with arc-length continuation and Floquet theory is applied to a lumped-parameter planetary gear model including gravity, fluctuating mesh stiffness, bearing clearance, and nonlinear tooth contact to obtain the planetary gear dynamic response. The calculated responses compare well with time domain integrated mathematical models and experimental results. Gravity is a fundamental vibration source in wind turbine planetary gears and plays an important role in system dynamics, causing hardening effects induced by tooth wedging and bearing-raceway contacts. Bearing clearance significantly reduces the lowest resonant frequencies of translational modes. Gravity and bearing clearance together lowers the speed at which tooth wedging occurs lower than the resonant frequency.

Guo, Y.; Keller, J.; Parker, R. G.

2012-06-01T23:59:59.000Z

137

Extended quintessence with an exponential coupling  

E-Print Network (OSTI)

We study a class of extended quintessence cosmologies where the scalar field playing the role of the dark energy is exponentially coupled to the Ricci scalar. We find that the dynamics induced by the effective gravitational potential in the Klein-Gordon equation dominates the motion of the field in the early universe. The resulting "R-boost" trajectory is characterized by a kinetic dark energy density, given by [3\\rhomnr0(1+z)]^2 [ 32 rhor0 omegaJBD0]^(-1), where omegaJBD0, rhor0 and rhomnr0 are calculated at present, and represent the Jordan Brans Dicke parameter, the density of relativistic matter and of those species which are non-relativistic at redshift z, respectively. We show that such a trajectory represents an attractor, equivalent to a tracking solution with equation of state w=-1/3, providing a large basin of attraction for the initial dark energy density regardless of the properties of the potential energy yielding acceleration today. We derive the up to date constraints from Big Bang Nucleosynthesis (BBN) on the present scenario, and we show that they are largely satisfied for interesting trajectories of the dark energy scalar field in the early universe. We compute the cosmological perturbation spectra in these cosmologies. For a fixed value of omegaJBD0, the projection and Integrated Sachs-Wolfe effects on the cosmic microwave background anisotropy are considerably larger in the exponential case with respect to a quadratic non-minimal coupling, reflecting the fact that the effective gravitational constant depends exponentially on the dynamics of the field.

Valeria Pettorino; Carlo Baccigalupi; Gianpiero Mangano

2004-12-14T23:59:59.000Z

138

Extending Behavior Protocols With Data and Multisynchronization  

E-Print Network (OSTI)

of a program piece, in particular a component, often depends on data values. Therefore, to model the behaviorCallback.IpAddressInvalidated 2 ) + NULL ) ) } ) 15 #12;) | ?IManagement.UsePermanentIpDatabase^ ); !IManagement; ( ( !IIpMacTransientDb.Remove 2; !IDhcpCallback.IpAddressInvalidated 2 ) + NULL ) ) } ) ) | ?IManagement

139

RECALIBRATION OF H CANYON ONLINE SPECTROPHOTOMETER AT EXTENDED URANIUM CONCENTRATION  

SciTech Connect

The H Canyon online spectrophotometers are calibrated for measurement of the uranium and nitric acid concentrations of several tanks in the 2nd Uranium Cycle.[1] The spectrometers, flow cells, and prediction models are currently optimized for a process in which uranium concentrations are expected to range from 0-15 g/L and nitric acid concentrations from 0.05-6 M. However, an upcoming processing campaign will involve 'Super Kukla' material, which has a lower than usual enrichment of fissionable uranium. Total uranium concentrations will be higher, spanning approximately 0-30 g/L U, with no change in the nitric acid concentrations. The new processing conditions require the installation of new flow cells with shorter path lengths. As the process solutions have a higher uranium concentration, the shorter path length is required to decrease the absorptivity to values closer to the optimal range for the instrument. Also, new uranium and nitric acid prediction models are required to span the extended uranium concentration range. The models will be developed for the 17.5 and 15.4 tanks, for which nitric acid concentrations will not exceed 1 M. The restricted acid range compared to the original models is anticipated to reduce the measurement uncertainty for both uranium and nitric acid. The online spectrophotometers in H Canyon Second Uranium Cycle were modified to allow measurement of uranium and nitric acid for the Super Kukla processing campaign. The expected uranium concentrations, which are higher than those that have been recently processed, required new flow cells with one-third the optical path length of the existing cells. Also, new uranium and nitric acid calibrations were made. The estimated reading uncertainties (2{sigma}) for Tanks 15.4 and 17.5 are {approx}5% for uranium and {approx}25% for nitric acid.

Lascola, R

2008-10-29T23:59:59.000Z

140

Extending Sensor Calibration Intervals in Nuclear Power Plants  

SciTech Connect

Currently in the USA, sensor recalibration is required at every refueling outage, and it has emerged as a critical path item for shortening outage duration. International application of calibration monitoring, such as at the Sizewell B plant in UK, has shown that sensors may operate for eight years, or longer, within calibration tolerances. Online monitoring can be employed to identify those sensors which require calibration, allowing for calibration of only those sensors which need it. The US NRC accepted the general concept of online monitoring for sensor calibration monitoring in 2000, but no plants have been granted the necessary license amendment to apply it. This project addresses key issues in advanced recalibration methodologies and provides the science base to enable adoption of best practices for applying online monitoring, resulting in a public domain standardized methodology for sensor calibration interval extension. Research to develop this methodology will focus on three key areas: (1) quantification of uncertainty in modeling techniques used for calibration monitoring, with a particular focus on non-redundant sensor models; (2) accurate determination of acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and (3) the use of virtual sensor estimates to replace identified faulty sensors to extend operation to the next convenient maintenance opportunity.

Coble, Jamie B.; Meyer, Ryan M.; Ramuhalli, Pradeep; Bond, Leonard J.; Shumaker, Brent; Hashemian, Hash

2012-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Department of Energy Announces Intent to Extend Hanford Site Contract |  

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

Department of Energy Announces Intent to Extend Hanford Site Department of Energy Announces Intent to Extend Hanford Site Contract Department of Energy Announces Intent to Extend Hanford Site Contract April 25, 2012 - 12:00pm Addthis Media Contact Cameron Hardy, DOE (509) 376-5365, Cameron.Hardy@rl.doe.gov RICHLAND, Wash. - The Department of Energy (DOE) plans to extend CH2M HILL Plateau Remediation Company's contract for environmental cleanup at the Hanford Site by another five years. In 2008, following a competitive bid, DOE awarded CH2M HILL a cost-plus, award-fee contract valued at approximately $4.5 billion over ten years, including a five-year base period with the option to extend the contract for another five years. DOE evaluated whether or not extending the contract was in the best interest of the government.

142

DOE intends to extend the Advanced Mixed Waste Treatment Project...  

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

DOE intends to extend the Advanced Mixed Waste Treatment Project contract for four months as competition for long-term contract continues. Scene from inside the Advanced Mixed...

143

Uranium Leasing Program Draft PEIS Public Comment Period Extended...  

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

Centers Field Sites Power Marketing Administration Other Agencies You are here Home Uranium Leasing Program Draft PEIS Public Comment Period Extended to May 31, 2013 Uranium...

144

Upper crustal faulting in an obliquely extending orogen, structural...  

Open Energy Info (EERE)

faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Jump to: navigation, search...

145

The Extended Q-Range Small Angle Neutron Scattering ...  

Science Conference Proceedings (OSTI)

Abstract Scope, The Extended Q-Range Small Angle Neutron Scattering Diffractometer (EQ-SANS) at the Spallation Neutron Source (SNS) is a high intensity ...

146

Lattice based extended formulations for integer linear equality systems  

E-Print Network (OSTI)

Feb 28, 2007 ... Lattice based extended formulations for integer linear equality systems. Karen Aardal (karen.aardal ***at*** cwi.nl) Laurence A. Wolsey (wolsey ...

147

Clinton Extends Moratorium on Nuclear Weapons Testing | National...  

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

Clinton Extends Moratorium on Nuclear Weapons Testing | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear...

148

Exclusive Signals of an Extended Higgs Sector  

E-Print Network (OSTI)

Expectations for the magnitude of Higgs boson signals in standard Higgs search channels at the LHC relative to Standard Model (SM) expectations are investigated within the framework of various types of CP and flavor conserving two Higgs doublet models (2HDMs). Signals of the SM-like Higgs boson in different classes of 2HDM may be parameterized in terms of particular two-dimensional sub-spaces of the general four-dimensional space of Higgs couplings to the massive vector bosons, top quark, bottom quark, and tau lepton. We find fairly strong correlations among the inclusive di-photon channel and the exclusive di-photon and di-tau channels from vector boson fusion or associated production. Order one deviations from SM expectations in some of these channels could provide discriminating power among various types of 2HDMs. The ratio of exclusive di-photon to di-tau channels is particularly sensitive to deviations from SM expectations. We also emphasize that deviations from SM expectations in standard Higgs search c...

Craig, Nathaniel

2012-01-01T23:59:59.000Z

149

Suppression of dynamics in coupled discrete systems in interaction with an extended environment  

E-Print Network (OSTI)

We report the suppression of dynamics and occurrence of quiescent states in an extended system of coupled discrete dynamical systems. This phenomenon is induced by interaction with another similar system with a different and damped dynamics which we call an extended environment. Both the system and the environment are in a feedback loop and their mutual influence leads to suppression of dynamic activity. We illustrate this in the specific case of a system of coupled neurons modelled by a 2-dimensional discrete system called Rulkov maps. A detailed analysis is carried out by considering single units of discrete systems where control to steady states is induced by an external damped system. This is then extended to rings and lattices. As an important application, we also present how the excitation waves produced due to defect neurons can be suppressed by interaction with a system of passive cells.

Snehal M. Shekatkar; G. Ambika

2013-06-10T23:59:59.000Z

150

Extended Electrodynamics I. Basic Notions, Principles and Equations  

E-Print Network (OSTI)

This paper aims to present an elaborate view on the motivation and realization of the idea to extend Maxwell's electrodynamics to Extended Electrodynamics in a reasonable and appropriate way in order to make it possible to describe electromagnetic (3+1)-soliton-like objects in vacuum and in the presence of continuous media (external fields), exchanging energy-momentum with the electromagnetic field.

S. Donev; M. Tashkova

1997-10-02T23:59:59.000Z

151

Extended Fuzzy Logic Programs with Fuzzy Answer Set Semantics  

Science Conference Proceedings (OSTI)

This paper extends fuzzy logic programs [12, 24] to allow the explicit representation of classical negation as well as non-monotonic negation, by introducing the notion of extended fuzzy logic programs. We present the fuzzy answer set semantics for the ...

Emad Saad

2009-08-01T23:59:59.000Z

152

CHI '06 Extended Abstracts on Human Factors in Computing Systems  

Science Conference Proceedings (OSTI)

Welcome to the CHI 2006 Extended Abstracts. We hope that you will enjoy this year's extended abstracts and the changes that we have made. For the first time this year, we encouraged submissions from six different sub-communities of the human-computer ...

Gary Olson; Robin Jeffries

2006-04-01T23:59:59.000Z

153

Design, implementation and testing of extended and mixed precision BLAS  

Science Conference Proceedings (OSTI)

This article describes the design rationale, a C implementation, and conformance testing of a subset of the new Standard for the BLAS (Basic Linear Algebra Subroutines): Extended and Mixed Precision BLAS. Permitting higher internal precision and mixed ... Keywords: BLAS, double-double arithmetic, extended and mixed precision

Xiaoye S. Li; James W. Demmel; David H. Bailey; Greg Henry; Yozo Hida; Jimmy Iskandar; William Kahan; Suh Y. Kang; Anil Kapur; Michael C. Martin; Brandon J. Thompson; Teresa Tung; Daniel J. Yoo

2002-06-01T23:59:59.000Z

154

Restoration of audio documents by means of extended Kalman filter  

Science Conference Proceedings (OSTI)

We present some results on audio restoration obtained with an algorithm that solves the problems of broadband noise filtering, signal parameters tracking, and impulsive noise removal by using the Extended Kalman Filter (EKF) theory. We show that, to ... Keywords: Kalman filtering, audio restoration, audio signal processing, extended Kalman filter (EKF), identification of time-varying autoregressive processes

Sergio Canazza; Giovanni De Poli; Gian Antonio Mian

2010-08-01T23:59:59.000Z

155

WILSON-BAPPU EFFECT: EXTENDED TO SURFACE GRAVITY  

SciTech Connect

In 1957, Wilson and Bappu found a tight correlation between the stellar absolute visual magnitude (M{sub V} ) and the width of the Ca II K emission line for late-type stars. Here, we revisit the Wilson-Bappu relationship (WBR) to claim that the WBR can be an excellent indicator of stellar surface gravity of late-type stars as well as a distance indicator. We have measured the width (W) of the Ca II K emission line in high-resolution spectra of 125 late-type stars obtained with the Bohyunsan Optical Echelle Spectrograph and adopted from the Ultraviolet and Visual Echelle Spectrograph archive. Based on our measurement of the emission line width (W), we have obtained a WBR of M{sub V} = 33.76 - 18.08 log W. In order to extend the WBR to being a surface gravity indicator, stellar atmospheric parameters such as effective temperature (T{sub eff}), surface gravity (log g), metallicity ([Fe/H]), and micro-turbulence ({xi}{sub tur}) have been derived from self-consistent detailed analysis using the Kurucz stellar atmospheric model and the abundance analysis code, MOOG. Using these stellar parameters and log W, we found that log g = -5.85 log W+9.97 log T{sub eff} - 23.48 for late-type stars.

Park, Sunkyung; Kang, Wonseok; Lee, Jeong-Eun [School of Space Research, Kyung Hee University, Yongin-Si, Gyeonggi-Do 446-701 (Korea, Republic of); Lee, Sang-Gak, E-mail: sunkyung@khu.ac.kr, E-mail: wskang@khu.ac.kr, E-mail: jeongeun.lee@khu.ac.kr, E-mail: sanggak@snu.ac.kr [Astronomy Program, Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of)

2013-10-01T23:59:59.000Z

156

Management Alert - Extended Assignments at Princeton Plasma Physics Laboratory  

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

Extended Assignments at Princeton Extended Assignments at Princeton Plasma Physics Laboratory DOE/IG-0864 May 2012 U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Department of Energy Washington, DC 20585 May 17, 2012 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Management Alert on "Extended Assignments at Princeton Plasma Physics Laboratory" BACKGROUND Princeton University operates the Princeton Plasma Physics Laboratory (Princeton) under a contract with the Department of Energy's Office of Science. Princeton works with partners around the world to develop fusion as an energy source. The Laboratory's annual operating costs

157

Notice of OMB Action Approving DOE Submission to Extend Information  

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

OMB Action Approving DOE Submission to Extend Information OMB Action Approving DOE Submission to Extend Information Collection Request Title: OE Recovery Act Financial Assistance Grants Notice of OMB Action Approving DOE Submission to Extend Information Collection Request Title: OE Recovery Act Financial Assistance Grants The Office of Management and Budget (OMB) has issued a Notice of OMB Action approving the Department of Energy's request to extend for three years the Information Collection Request Title: OE Recovery Act Financial Assistance Grants, OMB Control No. 1910-5149 that DOE is developing for submission to OMB pursuant to the Paperwork Reduction Act of 1995. Supporting documentation for the request was submitted in September and October, 2011. Comments were due on or before November 7, 2011. ICR Supporting Statement (PDF). OMB Form 83-I (PDF). SGIG Reporting Guidance

158

Department of Energy Extends Renewable Energy Loan Guarantee Solicitation |  

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

Extends Renewable Energy Loan Guarantee Extends Renewable Energy Loan Guarantee Solicitation Department of Energy Extends Renewable Energy Loan Guarantee Solicitation August 20, 2010 - 12:00am Addthis WASHINGTON, DC - Secretary Steven Chu announced today that the Department of Energy is extending the application deadline for the July 2009 energy efficiency, renewable energy and advanced transmission and distribution technologies solicitation. The Round 8, Part 1 application deadline is October 5, 2010. This gives companies an additional six weeks to apply for a loan guarantee under Section 1703, and if qualified, under Section 1705, provided by the American Recovery and Reinvestment Act. "The Department is committed to bringing as many commercial renewable projects online as possible to help us meet our clean energy goals and

159

Department of Energy Extends Renewable Energy Loan Guarantee Solicitation |  

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

Extends Renewable Energy Loan Guarantee Extends Renewable Energy Loan Guarantee Solicitation Department of Energy Extends Renewable Energy Loan Guarantee Solicitation August 5, 2010 - 12:00am Addthis Please view the UPDATED PRESS RELEASE for the most currently information. WASHINGTON, DC - Secretary Steven Chu announced today that the Department of Energy is extending the application deadline for the July 2009 energy efficiency, renewable energy and advanced transmission and distribution technologies solicitation. The Round 8, Part 1 application deadline is October 5, 2010. This gives companies an additional six weeks to apply for a loan guarantee under Section 1705, provided by the American Recovery and Reinvestment Act. "The Department is committed to bringing as many commercial renewable

160

Extended Edited Synoptic Cloud Reports from Ships and Land Stations...  

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

Extended Edited Synoptic Cloud Reports from Ships and Land Stations Over the Globe, 1952-2009 (NDP-026C) Data graphic Data Files PDF graphic Original NDP-026C Documentation PDF...

Note: This page contains sample records for the topic "favar extended 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

Extended core for motor/generator - Energy Innovation Portal  

An extended stator core in a motor/generator can be utilized to mitigate losses in end regions of the core and a frame of the motor/generator. To mitigate the losses ...

162

DOE Extends Comment Period on Certification and Enforcement Notice of  

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

Certification and Enforcement Notice Certification and Enforcement Notice of Proposed Rulemaking DOE Extends Comment Period on Certification and Enforcement Notice of Proposed Rulemaking October 15, 2010 - 10:22am Addthis In response to a formal request, the Department has extended to October 29, 2010, the deadline for submission of comments in response to the Notice or Proposed Rulemaking on the certification and enforcement of the Department's energy conservation standards. (75 FR 56796). The signed extension provided here will be published shortly in the Federal Register. Addthis Related Articles DOE Extends Comment Period on Notice of Inquiry Under the Energy Independence and Security Act DOE Extends Comment Period on Notice of Inquiry Under the Energy Independence and Security Act Department of Energy Issues Final Rule on Loan Guarantees

163

DOE Media Advisory - DOE extends public comment period on Draft  

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

Media Advisory - DOE extends public comment period on Draft Media Advisory - DOE extends public comment period on Draft Environmental Assessment for Replacement Capability for Disposal of Remote-Handled Low-Level Radioactive Waste Generated at the U.S. Department of Energy's Idaho Site DOE Media Advisory - DOE extends public comment period on Draft Environmental Assessment for Replacement Capability for Disposal of Remote-Handled Low-Level Radioactive Waste Generated at the U.S. Department of Energy's Idaho Site October 13, 2011 - 12:00pm Addthis Media Contact Tim Jackson 208-526-8484 In response to requests from people interested in National Environmental Policy Act activities occurring at the U.S. Department of Energy's Idaho Operations Office, the department has extended the public comment period that began September 1 on the Draft Environmental Assessment for

164

Successful Oil and Gas Technology Transfer Program Extended to 2015 |  

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

Successful Oil and Gas Technology Transfer Program Extended to 2015 Successful Oil and Gas Technology Transfer Program Extended to 2015 Successful Oil and Gas Technology Transfer Program Extended to 2015 June 23, 2010 - 1:00pm Addthis Washington, D.C. - The Stripper Well Consortium (SWC) - a program that has successfully provided and transferred technological advances to small, independent oil and gas operators over the past nine years - has been extended to 2015 by the U.S. Department of Energy (DOE). An industry-driven consortium initiated in 2000, SWC's goal is to keep "stripper wells" productive in an environmentally safe manner, maximizing the recovery of domestic hydrocarbon resources. The consortium is managed and administered by The Pennsylvania State University on behalf of DOE; the Office of Fossil Energy's (FE) National Energy Technology Laboratory (NETL)

165

Department of Energy Extends Public Comment Period | Department of Energy  

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

Department of Energy Extends Public Comment Period Department of Energy Extends Public Comment Period Department of Energy Extends Public Comment Period September 29, 2011 - 12:00pm Addthis Media Contacts Darwin J. Morgan morgan@nv.doe.gov 702-295-3521 Kelly K. Snyder snyderk@nv.doe.gov 702-295-3521 In response to public comments and requests, the U.S. Department of Energy National Nuclear Security Administration Nevada Site Office is extending the public comment period for the Draft Site-Wide Environmental Impact Statement (SWEIS) for the Nevada National Security Site (NNSS) and Off-Site Locations in Nevada. The formal comment period will close on December 2, 2011, rather than October 27. Within the draft SWEIS, the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office presents a formal analysis of

166

Clinton Extends Moratorium on Nuclear Weapons Testing | National Nuclear  

National Nuclear Security Administration (NNSA)

Clinton Extends Moratorium on Nuclear Weapons Testing | National Nuclear Clinton Extends Moratorium on Nuclear Weapons Testing | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > Clinton Extends Moratorium on Nuclear Weapons Testing Clinton Extends Moratorium on Nuclear Weapons Testing July 03, 1993 Washington, DC

167

Department of Energy Extends Public Comment Period | Department of Energy  

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

Department of Energy Extends Public Comment Period Department of Energy Extends Public Comment Period Department of Energy Extends Public Comment Period September 29, 2011 - 12:00pm Addthis Media Contacts Darwin J. Morgan morgan@nv.doe.gov 702-295-3521 Kelly K. Snyder snyderk@nv.doe.gov 702-295-3521 In response to public comments and requests, the U.S. Department of Energy National Nuclear Security Administration Nevada Site Office is extending the public comment period for the Draft Site-Wide Environmental Impact Statement (SWEIS) for the Nevada National Security Site (NNSS) and Off-Site Locations in Nevada. The formal comment period will close on December 2, 2011, rather than October 27. Within the draft SWEIS, the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office presents a formal analysis of

168

Extending the BLEU MT evaluation method with frequency weightings  

Science Conference Proceedings (OSTI)

We present the results of an experiment on extending the automatic method of Machine Translation evaluation BLUE with statistical weights for lexical items, such as tf.idf scores. We show that this extension gives additional information about evaluated ...

Bogdan Babych; Anthony Hartley

2004-07-01T23:59:59.000Z

169

A low-power-extended-linear-range magnetic levitator  

E-Print Network (OSTI)

In this thesis, I designed and built analog circuits to extend the linear range of a magnetic levitator. Analog Devices AD633 multipliers are used to implement nonlinear terms which compensate for the electromagnet and ...

Johnson, Rayal St. Patrick

2007-01-01T23:59:59.000Z

170

One-Electron Reduction of an "Extended Viologen"  

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

Pawel Rempala, and Josef Michl J. Phys. Chem. B, 109, 10862-10869 (2005). Find paper at ACS Publications Abstract: One-electron reduction of the "extended viologen" dication 1...

171

Extended outages at several nuclear plants led to high outage ...  

U.S. Energy Information Administration (EIA)

Outages at U.S. nuclear power plants so far in 2012 are generally higher than in recent years because of extended forced outages at four nuclear power plants.

172

Moist Dynamics of Extended Monsoon Breaks over South Asia  

Science Conference Proceedings (OSTI)

In the present research to identify moist processes that initiate and maintain extended monsoon breaks over South Asia moisture and moist static energy (MSE) budgets are performed on the newly available European Centre for Medium-Range Weather ...

V. Prasanna; H. Annamalai

2012-06-01T23:59:59.000Z

173

Managing Aging Effects on Dry Cask Storage Systems for Extended...  

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

Managing Aging Effects on Dry Cask Storage Systems for Extended Long Term Storage and Transportation of Used Fuel Rev0 Managing Aging Effects on Dry Cask Storage Systems for...

174

CHI '05 Extended Abstracts on Human Factors in Computing Systems  

Science Conference Proceedings (OSTI)

On behalf of the Technical Program Committee, welcome to the CHI 2005 conference DVD! The Extended Abstracts portion of this disc includes submissions from all conference venues except Papers (which you can find in the Conference Proceedings section). ...

Gerrit van der Veer; Carolyn Gale

2005-04-01T23:59:59.000Z

175

Accelerating the development of complex products in extended enterprises  

E-Print Network (OSTI)

This thesis examines strategies to accelerate product development in a large commercial aerospace program structured as an extended enterprise where first and second tier suppliers perform most of the detailed product ...

Dawson, Benjamin Alan

2011-01-01T23:59:59.000Z

176

Racoro Extended-Term Aircraft Observations of Boundary Layer Clouds  

Science Conference Proceedings (OSTI)

A first-of-a-kind, extended-term cloud aircraft campaign was conducted to obtain an in situ statistical characterization of continental boundary layer clouds needed to investigate cloud processes and refine retrieval algorithms. Coordinated by the ...

Andrew M. Vogelmann; Greg M. McFarquhar; John A. Ogren; David D. Turner; Jennifer M. Comstock; Graham Feingold; Charles N. Long; Haflidi H. Jonsson; Anthony Bucholtz; Don R. Collins; Glenn S. Diskin; Hermann Gerber; R. Paul Lawson; Roy K. Woods; Elisabeth Andrews; Hee-Jung Yang; J. Christine Chiu; Daniel Hartsock; John M. Hubbe; Chaomei Lo; Alexander Marshak; Justin W. Monroe; Sally A. McFarlane; Beat Schmid; Jason M. Tomlinson; Tami Toto

2012-06-01T23:59:59.000Z

177

Extended versus Ensemble Kalman Filtering for Land Data Assimilation  

Science Conference Proceedings (OSTI)

The performance of the extended Kalman filter (EKF) and the ensemble Kalman filter (EnKF) are assessed for soil moisture estimation. In a twin experiment for the southeastern United States synthetic observations of near-surface soil moisture are ...

Rolf H. Reichle; Jeffrey P. Walker; Randal D. Koster; Paul R. Houser

2002-12-01T23:59:59.000Z

178

Extended cage adjustable speed electric motors and drive packages  

DOE Patents (OSTI)

The rotor cage of a motor is extended, a second stator is coupled to this extended rotor cage, and the windings have the same number of poles. The motor torque and speed can be controlled by either injecting energy into or extracting energy out from the rotor cage. The motor produces less harmonics than existing doubly-fed motors. Consequently, a new type of low cost, high efficiency drive is produced.

Hsu, John S. (Oak Ridge, TN)

1999-01-01T23:59:59.000Z

179

Extended cage adjustable speed electric motors and drive packages  

DOE Patents (OSTI)

The rotor cage of a motor is extended, a second stator is coupled to this extended rotor cage, and the windings have the same number of poles. The motor torque and speed can be controlled by either injecting energy into or extracting energy out from the rotor cage. The motor produces less harmonics than existing doubly-fed motors. Consequently, a new type of low cost, high efficiency drive is produced. 12 figs.

Hsu, J.S.

1999-03-23T23:59:59.000Z

180

Models  

E-Print Network (OSTI)

• A very typical statistical/econometric model assumes something like yt ? i.i.d. f (y, x, ?) (1) where f (·) is a parametric family known up to parameters ?. • Parameter estimation: maximum likelihood ˆ?n = arg max ? ln f (Yt, Xt, ?) (2) t • What if the basic model assumptions of (1) are violated? The parametric family may not contain the true model f0(x, y) that generated the data; or the data may not be i.i.d.; etc. Misspecified

Stas Kolenikov; U Of Missouri; U Of Missouri

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Minimally extended elctroweak gauge theories in SO(10) and E/sub 6/  

SciTech Connect

The possibility of minimally extending the standard SU(2)/sub L/xU(1) electroweak theory within the context of SO(10) and E/sub 6/ grand unification by adding U(1) factors is explored. The neutrino neutral-current interactions in these schemes are arranged to coincide with the standard-model predictions. Limits on the masses of the extra Z's generated by these U(1) factors are obtained by considering other parity-violating effects. Additional Z's as light as 2.5 to 3.0 times the standard model Z/sup 0/ mass are allowed.

Robinett, R.W.; Rosner, J.L.

1982-11-01T23:59:59.000Z

182

Technology to Extend Battery Life Coming Soon | Department of Energy  

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

Technology to Extend Battery Life Coming Soon Technology to Extend Battery Life Coming Soon Technology to Extend Battery Life Coming Soon December 7, 2009 - 9:46am Addthis Joshua DeLung What are the key facts? A firm in Albany, New York is developing a clean source of energy -- fuel cells -- for portable electronics. A cost-sharing award through the Recovery Acy will help MTI demonstrate a commercially viable, methanol fuel cell-powered charger for the consumer electronics market. Many Americans across the country rely on handheld devices each day to get their jobs done or stay in touch with friends and family, and now some companies are pushing technologies that power that hardware from concept to reality faster than ever. One such firm in Albany, N.Y., has developed a clean source of energy for portable electronics designed for anybody

183

Upper crustal faulting in an obliquely extending orogen, structural control  

Open Energy Info (EERE)

faulting in an obliquely extending orogen, structural control faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Upper crustal faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Details Activities (1) Areas (1) Regions (0) Abstract: New multifold seismic reflection data from the Coso geothermal field in the central Coso Range, eastern California, image brittle faults and other structures in a zone of localized crustal extension between two major strike-slip faults. The Coso Wash fault, a Quaternary-active normal fault that is a locus of surface geothermal activity, is well-imaged as a

184

Upper crustal structure of an obliquely extending orogen, central Coso  

Open Energy Info (EERE)

structure of an obliquely extending orogen, central Coso structure of an obliquely extending orogen, central Coso Range, eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Upper crustal structure of an obliquely extending orogen, central Coso Range, eastern California Details Activities (1) Areas (1) Regions (0) Abstract: The Coso Range is an extensional domain in a releasing stepover between major dextral strike-slip faults along the southeastern margin of the Sierra Nevada Microplate. New multifold seismic reflection data from the Coso geothermal field in the central Coso Range image reflectors that resemble suites of structural and magmatic features exposed in many exhumed metamorphic core complexes (MCC). The Coso Wash Fault, a Holocene-active normal fault that is a locus of surface geothermal activity, is imaged as a

185

Construction or Extended Operation of Nuclear Plant (Vermont) | Department  

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

Construction or Extended Operation of Nuclear Plant (Vermont) Construction or Extended Operation of Nuclear Plant (Vermont) Construction or Extended Operation of Nuclear Plant (Vermont) < Back Eligibility Investor-Owned Utility Utility Program Info State Vermont Program Type Siting and Permitting Any petition for approval of construction of a nuclear energy generating plant within the state, or any petition for approval of the operation of a nuclear energy generating plant beyond the date established in a certificate of public good issued under this title, must be submitted to the public service board no later than four years before the date upon which the approval may take effect. Upon receipt of a petition for approval of construction or operation as provided under this section, the public service board shall notify the

186

LEP: Extending stockpile life | Y-12 National Security Complex  

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

LEP: Extending stockpile ... LEP: Extending stockpile ... LEP: Extending stockpile life Posted: February 7, 2013 - 6:10pm | Y-12 Report | Volume 9, Issue 2 | 2013 The Life Extension Program allows safe, effective weapons to remain in the stockpile well beyond their original service life. Nuclear weapons are intricate and, in a sense, handmade devices that cannot be stored indefinitely - and be expected to function - without ongoing care and maintenance. Weapon components periodically require evaluation and replacement. Fifteen years ago the Life Extension Program, or LEP, funded by Defense Programs, was established to care for and prolong the safety and effectiveness of the nuclear stockpile. Today Y-12 and other sites across the Nuclear Security Enterprise collaborate in that effort.

187

EIA - AEO2010 - No Sunset and Extended Policies cases  

Gasoline and Diesel Fuel Update (EIA)

No Sunset and Extended Policies cases No Sunset and Extended Policies cases Annual Energy Outlook 2010 with Projections to 2035 No Sunset and Extended Policies cases Background The AEO2010 Reference case is best described as a “current laws and regulations” case, because it generally assumes that existing laws and fully promulgated regulations will remain unchanged throughout the projection period, unless the legislation establishing them specifically calls for them to end or change. The Reference case often serves as a starting point for the analysis of proposed legislative or regulatory changes, a task that would be difficult if the Reference case included “projected” legislative or regulatory changes. As might be expected, it is sometimes difficult to draw a line between what should be included or excluded from the Reference case. Areas of particular uncertainty include:

188

Extended Linear Response for Bioanalytical Applications Using Multiple Enzymes  

E-Print Network (OSTI)

We develop a framework for optimizing a novel approach to extending the linear range of bioanalytical systems and biosensors by utilizing two enzymes with different kinetic responses to the input chemical as their substrate. Data for the flow-injection amperometric system devised for detection of lysine based on the function of L-Lysine-alpha-Oxidase and Lysine-2-monooxygenase are analyzed. Lysine is a homotropic substrate for the latter enzyme. We elucidate the mechanism for extending the linear response range and develop optimization techniques for future applications of such systems.

Privman, Vladimir; Simonian, Aleksandr

2013-01-01T23:59:59.000Z

189

Extended Linear Response for Bioanalytical Applications Using Multiple Enzymes  

E-Print Network (OSTI)

We develop a framework for optimizing a novel approach to extending the linear range of bioanalytical systems and biosensors by utilizing two enzymes with different kinetic responses to the input chemical as their substrate. Data for the flow-injection amperometric system devised for detection of lysine based on the function of L-Lysine-alpha-Oxidase and Lysine-2-monooxygenase are analyzed. Lysine is a homotropic substrate for the latter enzyme. We elucidate the mechanism for extending the linear response range and develop optimization techniques for future applications of such systems.

Vladimir Privman; Oleksandr Zavalov; Aleksandr Simonian

2013-05-25T23:59:59.000Z

190

Extended, Continuous Pt Nanostructures in Thick, Dispersed Electrodes  

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

Bryan Pivovar (PI) Bryan Pivovar (PI) National Renewable Energy Laboratory Sept 30, 2009 Extended, Continuous Pt Nanostructures in Thick, Dispersed Electrodes This presentation does not contain any proprietary, confidential, or otherwise restricted information Objectives To assist the DOE Fuel Cell Technologies (FCT) Program in meeting cost, durability, and performance targets in the areas of Electrocatalysts and MEAs. Approach: Novel Synthesis and Electrode Studies Pt nanotubes (UC-R) Pt coated carbon nanotubes Synthesis of novel catalysts based on extended surfaces due to 3M's demonstrated improvements in specific activity and durability using similar systems. Electrode architecture design, based on novel catalyst structures that allow thick (~10 µm), dispersed electrodes to

191

Extending Mobile Computer Battery Life through Energy-Aware Adaptation  

E-Print Network (OSTI)

supply and demand, providing a history of past energy usage, and soliciting user preferences. The system of application energy usage. It describes how the history of energy usage allows the system to support a widerExtending Mobile Computer Battery Life through Energy-Aware Adaptation Jason Flinn CMU-CS-01

192

The Extended Higgs System in $R$-symmetric Supersymmetry Theories  

E-Print Network (OSTI)

The Higgs sector is extended in $R$-symmetric supersymmetry theories by two iso-doublets $R_{d,u}$ which complement the standard iso-doublets $H_{d,u}$. We have analyzed masses and interactions of these novel states and describe their [non-standard] decay modes and their production channels at the LHC and $e^+e^-$ colliders.

S. Y. Choi; D. Choudhury; A. Freitas; J. Kalinowski; P. M. Zerwas

2010-12-13T23:59:59.000Z

193

US Biofuels Baseline and impact of extending the  

E-Print Network (OSTI)

June 2011 US Biofuels Baseline and impact of extending the $0.45 ethanol blenders baseline projections for agricultural and biofuel markets.1 That baseline assumed current biofuel policy for cellulosic biofuels was assumed to expire at the end of 2012. This report compares a slightly modified

Noble, James S.

194

State estimation in bioprocesses: extended Kalman filter vs. neural network  

Science Conference Proceedings (OSTI)

In biotechnology the demand for process control strategies has increased during the last decades. As fermentation processes become more and more complex, increasing requirements are posed to the control tools. A high-level process control depends on ... Keywords: streptococcus thermophilus, bio-engineering, extended Kalman filter, neural networks, state estimation

J. Hörrmann; D. Barth; M. Kräling; H. Röck

2007-05-01T23:59:59.000Z

195

An extended level set method for shape and topology optimization  

Science Conference Proceedings (OSTI)

In this paper, the conventional level set methods are extended as an effective approach for shape and topology optimization by the introduction of the radial basis functions (RBFs). The RBF multiquadric splines are used to construct the implicit level ... Keywords: Extension velocity, Gradient-based optimization, Level set method, Radial basis functions, Shape optimization, Topology optimization

S. Y. Wang; K. M. Lim; B. C. Khoo; M. Y. Wang

2007-01-01T23:59:59.000Z

196

Modeling  

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

ALE-AMR ALE-AMR code Wangyi Liu, John Bernard, Alex Friedman, Nathan Masters, Aaron Fisher, Velemir Mlaker, Alice Koniges, David Eder June 4, 2011 Abstract In this paper we describe an implementation of a single-fluid inter- face model in the ALE-AMR code to simulate surface tension effects. The model does not require explicit information on the physical state of the two phases. The only change to the existing fluid equations is an additional term in the stress tensor. We show results of applying the model to an expanding Al droplet surrounded by an Al vapor, where additional droplets are created. 1 Introduction The Neutralized Drift Compression Experiment II (NDCX II) is an induction accelerator planned for initial commissioning in 2012. The final design calls for a 3 MeV, Li+ ion beam, delivered in a bunch with characteristic pulse duration of 1 ns, and transverse dimension of order 1 mm. The

197

Extending current energy policies would reduce U.S. energy use ...  

U.S. Energy Information Administration (EIA)

The Extended Policies case, released today as part of EIA's Annual Energy Outlook 2013 (AEO2013), shows that extending certain federal energy ...

198

DOE Extends Public Comment Period for Uranium Program Environmental Impact  

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

Uranium Program Environmental Uranium Program Environmental Impact Statement DOE Extends Public Comment Period for Uranium Program Environmental Impact Statement April 18, 2013 - 1:08pm Addthis Contractor, Bob Darr, S.M. Stoller Corporation Public Affairs, (720) 377-9672, ULinfo@lm.doe.gov GRAND JUNCTION, Colo. - The U.S. Department of Energy (DOE) today announced that the public comment period for the Draft Uranium Leasing Program Programmatic Environmental Impact Statement (ULP PEIS) has been extended to May 31, 2013. Under the Uranium Leasing Program, DOE's Office of Legacy Management manages 31 tracts of land in Mesa, Montrose, and San Miguel counties in Colorado - approximately 25,000 acres - that are leased to private entities for uranium and vanadium mining. No mining operations are active

199

Extended-Lorentz Quantum-Cosmology Symmetry Group  

E-Print Network (OSTI)

Unitarily representable by transformations of Milne quantum-universe (MQU) Hilbert-space vectors is a 9-parameter 'extended-Lorentz' Lie group whose algebra comprises 9 conserved MQU-constituent ('quc') attributes: electric charge, energy, spirality, 3-vector momentum and 3-vector angular momentum. Commutation with the full symmetry algebra by the 3-element Lorentz-extending sub-algebra identifies any quc by its (permanent) trio of charge, spirality and energy integers. Milne's redshift-specifying 'universe age' is invariant under the MQU symmetry group. Also invariant is the (elsewhere specified) universe hamiltonian--a self-adjoint age-dependent Hilbert-space operator (not a symmetry-algebra member) that generates universe evolution with increasing age through a 'Schrodinger' (first-order) differential equation.

Chew, Geoffrey F

2013-01-01T23:59:59.000Z

200

Extended-Lorentz Quantum-Cosmology Symmetry Group  

E-Print Network (OSTI)

Unitarily representable by transformations of Milne quantum-universe (MQU) Hilbert-space vectors is a 9-parameter 'extended-Lorentz' Lie group whose algebra comprises 9 conserved MQU-constituent ('quc') attributes: electric charge, energy, spirality, 3-vector momentum and 3-vector angular momentum. Commutation with the full symmetry algebra by the 3-element Lorentz-extending sub-algebra identifies any quc by its (permanent) trio of charge, spirality and energy integers. Milne's redshift-specifying 'universe age' is invariant under the MQU symmetry group. Also invariant is the (elsewhere specified) universe hamiltonian--a self-adjoint age-dependent Hilbert-space operator (not a symmetry-algebra member) that generates universe evolution with increasing age through a 'Schrodinger' (first-order) differential equation.

Geoffrey F. Chew

2013-08-17T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Search for Spatially Extended Fermi-LAT Sources Using Two Years of Data  

SciTech Connect

Spatial extension is an important characteristic for correctly associating {gamma}-ray-emitting sources with their counterparts at other wavelengths and for obtaining an unbiased model of their spectra. We present a new method for quantifying the spatial extension of sources detected by the Large Area Telescope (LAT), the primary science instrument on the Fermi Gamma-ray Space Telescope (Fermi). We perform a series of Monte Carlo simulations to validate this tool and calculate the LAT threshold for detecting the spatial extension of sources. We then test all sources in the second Fermi -LAT catalog (2FGL) for extension. We report the detection of seven new spatially extended sources.

Lande, Joshua; Ackermann, Markus; Allafort, Alice; Ballet, Jean; Bechtol, Keith; Burnett, Toby; Cohen-Tanugi, Johann; Drlica-Wagner, Alex; Funk, Stefan; Giordano, Francesco; Grondin, Marie-Helene; Kerr, Matthew; Lemoine-Goumard, Marianne

2012-07-13T23:59:59.000Z

202

Risk Impact Assessment of Extended Integrated Leak Rate Testing Intervals  

Science Conference Proceedings (OSTI)

This report presents a risk impact assessment for extending integrated leak rate test (ILRT) surveillance intervals to 15 years. The assessment demonstrates that on an industry-wide basis there is small risk associated with the extension, provided that the performance bases and defense-in-depth are maintained. There is an obvious benefit in not performing costly, critical-path, time-consuming tests that provide a limited benefit from a risk perspective.

2008-10-31T23:59:59.000Z

203

Extended Poincare supersymmetry in three dimensions and supersymmetric anyons  

SciTech Connect

We classify the unitary representations of the extended Poincare supergroups in three dimensions. Irreducible unitary representations of any spin can appear, which correspond to supersymmetric anyons. Our results also show that all irreducible unitary representations necessarily have physical momenta. This is in sharp contrast to the ordinary Poincare group that admits in addition irreducible unitary representations with nonphysical momenta, which are discarded on physical grounds.

Chaichian, M.; Tureanu, A. [Department of Physics, University of Helsinki, P.O. Box 64, 00014 Helsinki (Finland) and School of Mathematics and Statistics, University of Sydney, Sydney (Australia); Zhang, R. B. [School of Mathematics and Statistics, University of Sydney, Sydney (Australia)

2012-07-15T23:59:59.000Z

204

Invariants of Lie algebras extended over commutative algebras without unit.  

E-Print Network (OSTI)

We establish results about the second cohomology with coefficients in the trivial module, symmetric invariant bilinear forms and derivations of a Lie algebra extended over a commutative associative algebra without unit. These results provide a simple unified approach to a number of questions treated earlier in completely separated ways: periodization of semisimple Lie algebras (Anna Larsson), derivation algebras, with prescribed semisimple part, of nilpotent Lie algebras (Benoist), and presentations of affine Kac-Moody algebras.

Pasha Zusmanovich.; Suppl. 1; 87-102

205

Black Holes in Born-Infeld Extended New Massive Gravity  

E-Print Network (OSTI)

In this paper we find different types of black holes for the Born-Infeld extended new massive gravity. Our solutions include (un)charged (A)dS warped black holes for four and six derivative expanded action. We also look at the black holes in unexpanded action. In each case we calculate the entropy, angular momentum and the mass of the black holes.

Ghodsi, Ahmad

2010-01-01T23:59:59.000Z

206

Agencies extend deadline for draft Record of Decision  

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

Department of Energy Idaho Department of Energy Idaho News Release For Immediate Release Date: June 2, 2008 Media Contact: Danielle Miller, (208) 526-5709 Agencies extend deadline for draft Record of Decision for Radioactive Waste Management Complex remediation The U.S. Department of Energy (DOE), the U.S. Environmental Protection Agency (EPA) and the Idaho Department of Environmental Quality (DEQ) have further extended the deadline for completing a draft Record of Decision (ROD) for the radioactive and hazardous waste landfill remediation project at DOE's Idaho cleanup site until June 30, 2008 in order to complete the necessary consultations and analysis of the public comments on the proposed plan. On April 1, 2008 the agencies extended the deadline for the first time to June 2, 2008. Under the original agreement, DOE was to submit the draft Record of Decision to the state of Idaho and EPA for review by March 31, 2008. In October 2007, the agencies issued a proposed plan for public comment outlining the preferred alternative for addressing buried radioactive and hazardous waste at the Radioactive Waste Management Complex (RWMC). DOE proposed expanding current targeted waste exhumations at the landfill to 4.8 acres. The state of Idaho awaited public comments before determining the appropriate acreage for waste retrieval.

207

Group theoretical construction of extended baryon operators in lattice QCD  

SciTech Connect

The design and implementation of large sets of spatially-extended, gauge-invariant operators for use in determining the spectrum of baryons in lattice QCD computations are described. Group theoretical projections onto the irreducible representations of the symmetry group of a cubic spatial lattice are used in all isospin channels. The operators are constructed to maximize overlaps with the low-lying states of interest, while minimizing the number of sources needed in computing the required quark propagators. Issues related to the identification of the spin quantum numbers of the states in the continuum limit are addressed.

Subhasish Basak; Robert Edwards; George Fleming; Urs Heller; Colin Morningstar; David Richards; Ikuro Sato; Stephen Wallace

2005-06-01T23:59:59.000Z

208

Combining Quark and Link Smearing to Improve Extended Baryon Operators  

SciTech Connect

The effects of Gaussian quark-field smearing and analytic stout-link smearing on the correlations of gauge-invariant extended baryon operators are studied. Gaussian quark-field smearing substantially reduces contributions from the short wavelength modes of the theory, while stout-link smearing significantly reduces the noise from the stochastic evaluations. The use of gauge-link smearing is shown to be crucial for baryon operators constructed of covariantly-displaced quark fields. Preferred smearing parameters are determined for a lattice spacing a_s ~ 0.1 fm.

Adam Lichtl; Subhasish Basak; Robert Edwards; George T. Fleming; Urs M. Heller; Colin Morningstar; David Richards; Ikuro Sato; Stephen Wallace

2005-09-29T23:59:59.000Z

209

Chinese tallow seed oil as a diesel fuel extender  

SciTech Connect

Chinese tallow and stillingia oil are products obtained from the seed of the unmerchantable, but high yielding Chinese tallow tree. Short-term diesel engine performance tests using mixtures 25%:75% and 50%:50% of Chinese tallow tree seed oil and tallow to diesel fuel gave engine power output, brake thermal efficiencies, and fuel consumption rates within 7% of those obtained using pure diesel fuel. Fuel property values of the extended fuels were found to be within limits proposed for diesel engines. 12 references.

Samson, W.D.; Vidrine, C.G.; Robbins, J.W.D.

1985-09-01T23:59:59.000Z

210

Fluidized bed heat exchanger utilizing angularly extending heat exchange tubes  

DOE Patents (OSTI)

A fluidized bed heat exchanger in which air is passed through a bed of particulate material containing fuel disposed in a housing. A steam/water natural circulation system is provided and includes a steam drum disposed adjacent the fluidized bed and a series of tubes connected at one end to the steam drum. A portion of the tubes are connected to a water drum and in the path of the air and the gaseous products of combustion exiting from the bed. Another portion of the tubes pass through the bed and extend at an angle to the upper surface of the bed.

Talmud, Fred M. (Berkeley Heights, NJ); Garcia-Mallol, Juan-Antonio (Morristown, NJ)

1980-01-01T23:59:59.000Z

211

Extending gear life in a coal pulverizer gearbox  

Science Conference Proceedings (OSTI)

A coal-fired power plant in the Western United States experienced short gearbox life in the 13 coal pulverizers operating at the plant. Wear on the bronze bull gear faces was suspected to have been caused by high particulate loading of coal dust and dirt in the gear oil, catalytic reaction between gear oil additives and some of the particulates generated, and high levels of copper in the gear oil. By addressing particulate ingress, adding filtration and switching to a synthetic gear oil, significant benefits were made to the power plant and gear oil life was extended. 2 photos., 1 tab.

Hansen, T.

2007-08-15T23:59:59.000Z

212

AEGIS20: a radio survey of the Extended Groth Strip  

E-Print Network (OSTI)

We describe AEGIS20 - a radio survey of the Extended Groth Strip (EGS) conducted with the Very Large Array (VLA) at 1.4GHz. The resulting catalog contains 1,123 emitters and is sensitive to ultraluminous starbursts to z1 where correcting for contamination by radio-loud active galactic nuclei (AGN) comes at the price of rejecting luminous starbursts. Whilst stacking radio images is a useful technique, accurate radio-based SFRs for z>>1 galaxies require precise redshifts and extraordinarily high-fidelity radio data to identify and remove accretion-related emission.

R. J. Ivison; S. C. Chapman; S. M. Faber; Ian Smail; A. D. Biggs; C. J. Conselice; G. Wilson; S. Salim; J. -S. Huang; S. P. Wilner

2006-07-12T23:59:59.000Z

213

CMS Data Processing Workflows during an Extended Cosmic Ray Run  

Science Conference Proceedings (OSTI)

The CMS Collaboration conducted a month-long data taking exercise, the Cosmic Run At Four Tesla, during October-November 2008, with the goal of commissioning the experiment for extended operation. With all installed detector systems participating, CMS recorded 270 million cosmic ray events with the solenoid at a magnetic field strength of 3.8 T. This paper describes the data flow from the detector through the various online and offline computing systems, as well as the workflows used for recording the data, for aligning and calibrating the detector, and for analysis of the data.

Not Available

2009-11-01T23:59:59.000Z

214

Limit of concentration under extended nonhomogeneous light sources  

SciTech Connect

Static photovoltaic concentrators, which see the sky as an extended distribution of radiance, are analyzed in a general way. The rules for achieving the highest energy on the cell are derived and the appropriate figures of merit are defined. It is concluded that casting increasingly high values of energy on the cell, which would be bifacial, require collecting a lower portion of the total sky energy. The corresponding figures of merit for the concentrators of the CPC family are analyzed, concluding that a better type of concentrator should be developed for photovoltaic applications.

Minano, J.C.; Luque, A.

1983-09-01T23:59:59.000Z

215

SIC-POVMs and the Extended Clifford Group  

E-Print Network (OSTI)

We describe the structure of the extended Clifford Group (defined to be the group consisting of all operators, unitary and anti-unitary, which normalize the generalized Pauli group (or Weyl-Heisenberg group as it is often called)). We also obtain a number of results concerning the structure of the Clifford Group proper (i.e. the group consisting just of the unitary operators which normalize the generalized Pauli group). We then investigate the action of the extended Clifford group operators on symmetric informationally complete POVMs (or SIC-POVMs) covariant relative to the action of the generalized Pauli group. We show that each of the fiducial vectors which has been constructed so far (including all the vectors constructed numerically by Renes et al) is an eigenvector of one of a special class of order 3 Clifford unitaries. This suggests a strengthening of a conjuecture of Zauner's. We give a complete characterization of the orbits and stability groups in dimensions 2-7. Finally, we show that the problem of constructing fiducial vectors may be expected to simplify in the infinite sequence of dimensions 7, 13, 19, 21, 31,... . We illustrate this point by constructing exact expressions for fiducial vectors in dimensions 7 and 19.

D. M. Appleby

2004-12-01T23:59:59.000Z

216

JR: Flexible Distributed Programming in an Extended Java  

Science Conference Proceedings (OSTI)

Abstract: Java provides a clean object-oriented programming model and allows for inherently system-independent programs. Unfortunately, Java has a limited concurrency model, providing only threads and remote method invocation (RMI). The JR programming ...

2001-04-01T23:59:59.000Z

217

HUBBLE SPACE TELESCOPE NARROWBAND SEARCH FOR EXTENDED Ly{alpha} EMISSION AROUND TWO z > 6 QUASARS  

Science Conference Proceedings (OSTI)

We search for extended Ly{alpha} emission around two z > 6 quasars, SDSS J1030+0524 (z = 6.309) and SDSS J1148+5251 (z = 6.419) using Wide Field Camera 3 narrowband filters on board the Hubble Space Telescope. For each quasar, we collected two deep, narrowband images, one sampling the Ly{alpha} line+continuum at the quasar redshifts and one of the continuum emission redward of the line. After carefully modeling the point-spread function, we find no evidence for extended Ly{alpha} emission. These observations set 2{sigma} limits of L(Ly{alpha}, extended) rates typically inferred from (rest-frame) far-infrared measurements of z {approx} 6 quasars, these limits are well below the intrinsic bright Ly{alpha} emission expected from the recombination of gas photoionized by the quasars or by the star formation in the host galaxies, and point toward significant Ly{alpha} suppression or dust attenuation. However, small extinction values have been observed along the line of sight to the nuclei, thus reddening has to be coupled with other mechanisms for Ly{alpha} suppression (e.g., resonance scattering). No Ly{alpha} emitting companions are found, down to a 5{sigma} sensitivity of {approx}1 Multiplication-Sign 10{sup -17} erg s{sup -1} cm{sup -2} arcsec{sup -2} (surface brightness) and {approx}5 Multiplication-Sign 10{sup -17} erg s{sup -1} cm{sup -2} (assuming point sources).

Decarli, Roberto; Walter, Fabian; Yang Yujin; Hennawi, Joseph F.; Rix, Hans-Walter; Venemans, Bram P. [Max-Planck Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Carilli, Chris L. [NRAO, Pete V. Domenici Array Science Center, P.O. Box O, Socorro, NM 87801 (United States); Fan Xiahoui [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Kurk, Jaron [Max-Planck-Institut fuer Extraterrestrische Physik, Giessenbachstrasse 1, D-85748 Garching (Germany); Riechers, Dominik [Astronomy Department, Caltech, 1200 East California boulevard, Pasadena, CA 91125 (United States); Strauss, Michael A., E-mail: decarli@mpia.de [Department of Astrophysical Sciences, Princeton University, Peyton Hall, Ivy Lane, Princeton, NJ 08544 (United States)

2012-09-10T23:59:59.000Z

218

An Alternative Approach to Nonhydrostatic Modeling  

Science Conference Proceedings (OSTI)

An alternative approach to the design of nonhydrostatic numerical weather prediction (NWP) models is presented. Instead of extending mesoscale nonhydrostatic modeling concepts to the synoptic scales and beyond, a hydrostatic NWP model using the ...

Z. I. Janjic; J. P. Gerrity Jr.; S. Nickovic

2001-05-01T23:59:59.000Z

219

Developing a Regulatory Framework for Extended Storage and Transportation  

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

Developing a Regulatory Framework Developing a Regulatory Framework for Extended Storage and Transportation National Transportation Stakeholders Forum May 10-12, 2011 Denver, Colorado Earl Easton Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Outline * Current Regulatory Framework * Future Regulatory Needs * Technical Basis (with some examples) * Path Forward 2 Current NRC Regulatory Framework for Storage * Renewable Term Licenses * Aging Management Plan - Time-limited aging analyses - Design for prevention - Monitoring - how, how often, in-situ - Maintenance - what type - Corrective Actions - when 3 Dry Cask Storage * 63 licensed ISFSIs (8 more than 2010) * Expect 10 sites pursuing General License * Over 1400 loaded storage casks 0 10 20 30 40 50 60 70 80 Number of ISFSIs Year Specific Licensees

220

Unraveling gravity beyond Einstein with extended test bodies  

E-Print Network (OSTI)

The motion of test bodies in gravity is tightly linked to the conservation laws. This well-known fact in the context of General Relativity is also valid for gravitational theories which go beyond Einstein's theory. Here we derive the equations of motion for test bodies for a very large class of gravitational theories with a general nonminimal coupling to matter. These equations form the basis for future systematic tests of alternative gravity theories. Our treatment is covariant and generalizes the classic Mathisson-Papapetrou-Dixon result for spinning (extended) test bodies. The equations of motion for structureless test bodies turn out to be surprisingly simple, despite the very general nature of the theories considered.

Dirk Puetzfeld; Yuri N. Obukhov

2013-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

COLUMBIA RADIATION LABORATORY RESEARCH INVESTIGATION DIRECTED TOWARD EXTENDING  

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

iVP-^"^^? iVP-^"^^? COLUMBIA RADIATION LABORATORY RESEARCH INVESTIGATION DIRECTED TOWARD EXTENDING THE USEFUL RANGE OF THE ELECTROMAGNETIC SPECTRUM Special Technical Report Signal Corps Contract DA-36-039 SC-64630 DA Project No. 3-99-10-022 SC Project No. 102B U. S. Army Laboratory Procurement Office Signal Corps Supply Agency Fort Monmouth, New Jersey The Trustees of Columbia University in the City of New York Box 6, Low Memorial Library New York 27, New York March 1, 1956 DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. COLUMBIA RADIATION LABORATORY Collected Papers on the AAASER (Microwave Amplification by Stimulated Emission of Radiation) Special Technical Report

222

NETL: News Release - DOE Oil Recovery Project Extends Success through  

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

5 , 2007 5 , 2007 DOE Oil Recovery Project Extends Success through Technology Transfer New Technologies & Techniques Boost U.S. Proved Oil Reserves, Travel the Globe WASHINGTON, DC - A groundbreaking oil-recovery project funded by the U.S. Department of Energy (DOE) is coming to a close, but its success will continue to be felt throughout the United States and the world. MORE INFO Read 03.10.06 Techline: DOE-Funded Project Revives Aging California Oilfield The project, titled "Increasing Heavy Oil Reserves in the Wilmington Oil Field Through Advanced Reservoir Characterizations and Thermal Production Technologies," began in 1995 with the goal of increasing recoverable heavy oil reserves in those sections of the Wilmington oilfield operated by Long

223

Extending Resonant Diffraction to Very High Energies for Structural Studies  

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

Tuning the Collective Properties of Artificial Nanoparticle Supercrystals Tuning the Collective Properties of Artificial Nanoparticle Supercrystals The Workings of a Key Staph Enzyme and How to Block It Simple Lithium Is Good For Many Surprises Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Extending Resonant Diffraction to Very High Energies for Structural Studies of Complex Materials MARCH 15, 2011 Bookmark and Share Systems investigated using the high-energy resonant PDF method: the (dis)ordered phases of Cu3Au, PtPd random-alloy and core-shell nanoparticles (upper part), and the BiFeO3 perovskite structure (undistorted and distorted; lower part). Researchers utilizing the U.S. Department of Energy's Argonne Advanced

224

Optimal Multicarrier Phase-Coded Waveform Design for Detection of Extended Targets  

SciTech Connect

We design a parametric multicarrier phase-coded (MCPC) waveform that achieves the optimal performance in detecting an extended target in the presence of signal-dependent interference. Traditional waveform design techniques provide only the optimal energy spectral density of the transmit waveform and suffer a performance loss in the synthesis process of the time-domain signal. Therefore, we opt for directly designing an MCPC waveform in terms of its time-frequency codes to obtain the optimal detection performance. First, we describe the modeling assumptions considering an extended target buried within the signal-dependent clutter with known power spectral density, and deduce the performance characteristics of the optimal detector. Then, considering an MCPC signal transmission, we express the detection characteristics in terms of the phase-codes of the MCPC waveform and propose to optimally design the MCPC signal by maximizing the detection probability. Our numerical results demonstrate that the designed MCPC signal attains the optimal detection performance and requires a lesser computational time than the other parametric waveform design approach.

Sen, Satyabrata [ORNL; Glover, Charles Wayne [ORNL

2013-01-01T23:59:59.000Z

225

Extended Source Gamma-Ray Emission from WIMP Annihilation in the Sagittarius Dwarf Elliptical Galaxy (SULI paper)  

SciTech Connect

The proximity of the dark matter dominated Sagittarius Dwarf Elliptical Galaxy (position (l,b) = 5.6{sup o}, -14{sup o}) allows it to act as an ideal laboratory for the exploration of extended gamma-ray emission from Weakly Interacting Massive Particle (WIMP) annihilation processes in a dark matter-dominated system. Since the matter in our universe is predominantly dark, exploring such processes as WIMP annihilation will lead to a better understanding of cosmology. In order to study this gamma-ray emission, a model for the diffuse background gamma-radiation in the dwarf galaxy's region is extracted from the Energetic Gamma Ray Experiment Telescope (EGRET) data. After validating this model and comparing it to the EGRET diffuse model, the background model is added to effective bleeding-contamination from external point sources and multiple models for the signal-above-background emission. Various models of this emission are tested: (a) no source located in region, (b) unidentified point source 3EG J1847-3219 from the Third EGRET Catalog responsible for the emission and (c) extended emission resulting from WIMP annihilation responsible for the signal above background. These models are created through the employment of Monte Carlo simulation methods, utilizing the response functions of the EGRET instrument to simulate the point spread function, energy dispersion and effects of variable effective area depending on angle of incidence. Energy spectra for point sources are generated from the best predictions of spectral indices listed in the Third EGRET Catalog and the spectrum for the extended dark matter source is generated from Pythia high energy annihilation simulations. Hypothesis testing is conducted to assess the goodness-of-fit of these models to the data taken by EGRET. Additionally, we hope to expand our analysis by employing the response functions of the imminent Gamma Ray Large Area Space Telescope (GLAST) to our models. This extension should highlight the sensitivity disparities between GLAST and EGRET and show GLAST's potential enhancement of this analysis. This process will allow for forecasting of extended WIMP annihilation emission signatures for the GLAST detector.

Vasu-Devan, Vidya; /Columbia U. /SLAC

2006-01-04T23:59:59.000Z

226

Extending the cereus group genomics to putative food-borne pathogens of different toxicity  

E-Print Network (OSTI)

Extending the cereus group genomics to putative food- borneGoltsman, et al Author(s) Division Genomics Extending thecereus group genomics to putative food-borne pathogens of

2008-01-01T23:59:59.000Z

227

A step-by-step extending parallelism approach for enumeration of combinatorial objects  

Science Conference Proceedings (OSTI)

We present a general step-by-step extending approach to parallel execution of enumeration of combinatorial objects (ECO) The methodology extends a famous enumeration algorithm, OrderlyGeneration, which allows concurrently generating all objects ...

Hien Phan; Ben Soh; Man Nguyen

2010-05-01T23:59:59.000Z

228

JR: Flexible distributed programming in an extended Java  

Science Conference Proceedings (OSTI)

Java provides a clean object-oriented programming model and allows for inherently system-independent programs. Unfortunately, Java has a limited concurrency model, providing only threads and remote method invocation (RMI).The JR programming language ... Keywords: Concurrency, Java, SR, concurrent object-oriented programming

Aaron W. Keen; Tingjian Ge; Justin T. Maris; Ronald A. Olsson

2004-05-01T23:59:59.000Z

229

Screw Photon-Like (3+1)-Solitons in Extended Electrodynamics  

E-Print Network (OSTI)

This paper aims to present explicit photon-like (3+1) spatially finite soliton solutions of screw type to the vacuum field equations of Extended Electrodynamics (EED) in relativistic formulation. We begin with emphasizing the need for spatially finite soliton modelling of microobjects. Then we briefly comment the properties of solitons and photons and recall some facts from EED. Making use of the localizing functions from differential topology (used in the partition of unity) we explicitly construct spatially finite screw solutions. Further a new description of the spin momentum inside EED, based on the notion for energy-momentum exchange between $F$ and $*F$, isintroduced and used to compute the integral spin momentum of a screw soliton. The consistency between the spatial and time periodicity naturally leads to a particular relation between the longitudinal and transverse sizes of the screw solution, namely, it is equal to $\\pi$. The Planck's formula $E=h\

Donev, S

2001-01-01T23:59:59.000Z

230

Screw Photon-Like (3+1)-Solitons in Extended Electrodynamics  

E-Print Network (OSTI)

This paper aims to present explicit photon-like (3+1) spatially finite soliton solutions of screw type to the vacuum field equations of Extended Electrodynamics (EED) in relativistic formulation. We begin with emphasizing the need for spatially finite soliton modelling of microobjects. Then we briefly comment the properties of solitons and photons and recall some facts from EED. Making use of the localizing functions from differential topology (used in the partition of unity) we explicitly construct spatially finite screw solutions. Further a new description of the spin momentum inside EED, based on the notion for energy-momentum exchange between $F$ and $*F$, isintroduced and used to compute the integral spin momentum of a screw soliton. The consistency between the spatial and time periodicity naturally leads to a particular relation between the longitudinal and transverse sizes of the screw solution, namely, it is equal to $\\pi$. The Planck's formula $E=h\

Stoil Donev

2001-04-10T23:59:59.000Z

231

Control of unstable steady states by extended time-delayed feedback  

E-Print Network (OSTI)

Time-delayed feedback methods can be used to control unstable periodic orbits as well as unstable steady states. We present an application of extended time delay autosynchronization introduced by Socolar et al. to an unstable focus. This system represents a generic model of an unstable steady state which can be found for instance in a Hopf bifurcation. In addition to the original controller design, we investigate effects of control loop latency and a bandpass filter on the domain of control. Furthermore, we consider coupling of the control force to the system via a rotational coupling matrix parametrized by a variable phase. We present an analysis of the domain of control and support our results by numerical calculations.

Thomas Dahms; Philipp Hoevel; Eckehard Schoell

2007-08-01T23:59:59.000Z

232

An Overview of the Lawrence Berkeley Laboratory Extended Entity-Relationship Database Tools  

E-Print Network (OSTI)

In this overview we briefly describe a collection of tools developed at Lawrence Berkeley Laboratory (LBL) for aiding users in specifying database structures and in querying databases using object-oriented concepts on top of commercial relational database management systems. These tools are based on an Extended Entity-Relationship (EER) model and allow users to deal with concise EER structures and queries rather than relational database definitions and queries which are usually large, hard to maintain, and involve terms that obscure the semantics of the application. Using the LBL/EER database tools users are insulated from the underlying database management system, and thus can avoid learning database management specific concepts and query languages. 1 Introduction Database applications involve large amounts of data that must be maintained and made available to users for analysis and manipulation. Database management systems (DBMSs) provide the capabilities required for stor...

Victor M. Markowitz; Arie Shoshani

1993-01-01T23:59:59.000Z

233

An extended dust disk in a spiral galaxy; An occulting galaxy pair in ANGST  

E-Print Network (OSTI)

We present an analysis of an occulting galaxy pair, serendipitously discovered in ACS Nearby Galaxy Survey Treasury (ANGST) observations of NGC 253 taken with Hubble Space Telescope's Advanced Camera for Survey in F475W, F606W$ and F814W (SDSS-g, broad V and I). The foreground disk system (at z < 0.06) shows a dusty disk much more extended than the starlight, with spiral lanes seen in extinction out to 1.5 R\\_25, approximately six half-light radii. This pair is the first where extinction can be mapped reliably out to this distance from the center. The spiral arms of the extended dust disk show typical extinction values of A\\_F475W ~ 0.25, A\\_F606W ~ 0.25, and A\\_F814W ~ 0.15. The extinction law inferred from these measures is similar to the local Milky Way one, and we show that the smoothing effects of sampling at limited spatial resolution (<57 pc, in these data) flattens the observed function through mixing of regions with different extinction. This galaxy illustrates the diversity of dust distributions in spirals, and the limitations of adopting a single dust model for optically similar galaxies. The ideal geometry of this pair of overlapping galaxies and the high sampling of HST data make this dataset ideal to analyze this pair with three separate approaches to overlapping galaxies: (A) a combined fit, rotating copies of both galaxies, (B) a simple flip of the background image and (C) an estimate of the original fluxes for the individual galaxies based on reconstructions of their proper isophotes. We conclude that in the case of high quality data such as these, isophotal models are to be preferred.

B. W. Holwerda; W. C. Keel; B. Williams; J. J. Dalcanton; R. S. de Jong

2008-10-15T23:59:59.000Z

234

Extending the lifetime of fuel cell based hybrid systems  

E-Print Network (OSTI)

Fuel cells are clean power sources that have much higher energy densities and lifetimes compared to batteries. However, fuel cells have limited load following capabilities and cannot be efficiently utilized if used in isolation. In this work, we consider a hybrid system where a fuel cell based hybrid power source is used to provide power to a DVFS processor. The hybrid power source consists of a room temperature fuel cell operating as the primary power source and a Li-ion battery (that has good load following capability) operating as the secondary source. Our goal is to develop polices to extend the lifetime of the fuel cell based hybrid system. First, we develop a charge based optimization framework which minimizes the charge loss of the hybrid system (and not the energy consumption of the DVFS processor). Next, we propose a new algorithm to minimize the charge loss by judiciously scaling the load current. We compare the performance of this algorithm with one that has been optimized for energy, and demonstrate its superiority. Finally, we evaluate the performance of the hybrid system under different system configurations and show how to determine the best combination of fuel cell size and battery capacity for a given embedded application.

Jianli Zhuo; Chaitali Chakrabarti; Naehyuck Chang; Sarma Vrudhula

2006-01-01T23:59:59.000Z

235

The Search for High Energy Extended Emission by Fermi-LAT from Swift-Localized Gamma-Ray Bursts  

SciTech Connect

The brighter Fermi-LAT bursts have exhibited emission at energies >0.1 GeV that persists as late as {approx}2 ks after the prompt phase has nominally ended. This so-called 'extended emission' could arise from continued activity of the prompt burst mechanism or it could be the start of a high energy afterglow component. The high energy extended emission seen by the LAT has typically followed a t{sup -}{gamma} power-law temporal decay where {gamma} {approx} 1.2-1.7 and has shown no strong indication of spectral evolution. In contrast, the prompt burst emission generally displays strong spectral variability and more complex temporal changes in the LAT band. This differing behavior suggests that the extended emission likely corresponds to an early afterglow phase produced by an external shock. In this study, we look for evidence of high energy extended emission from 145 Swift-localized GRBs that have occurred since the launch of Fermi. A majority of these bursts were either outside of the LAT field-of-view or were otherwise not detected by the LAT during the prompt phase. However, because of the scanning operation of the Fermi satellite, the long-lived extended emission of these bursts may be detectable in the LAT data on the {approx}few ks time scale. We will look for emission from individual bursts and will perform a stacking analysis in order to set bounds on this emission for the sample as a whole. The detection of such emission would have implications for afterglow models and for the overall energy budget of GRBs.

Chiang, J.; /Stanford U., HEPL /SLAC; Racusin, J.L.; /NASA, Goddard

2012-05-01T23:59:59.000Z

236

Extended Simulations of Graphene Growth with Updated Rate Coefficients  

DOE Green Energy (OSTI)

New simulations of graphene growth in flame environments are presented. The simulations employ a kinetic Monte Carlo (KMC) algorithm coupled to molecular mechanics (MM) geometry optimization to track individual graphenic species as they evolve. Focus is given to incorporation of five-member rings and resulting curvature and edge defects. The model code has been re-written to be more computationally efficient enabling a larger set of simulations to be run, decreasing stochastic fluctuations in the averaged results. The model also includes updated rate coefficients for graphene edge reactions recently published in the literature. The new simulations are compared to results from the previous model as well as to hydrogen to carbon ratios recorded in experiment and calculated with alternate models.

Whitesides, R; You, X; Frenklach, M

2010-03-18T23:59:59.000Z

237

Extending client-server infrastructure using middleware components  

Science Conference Proceedings (OSTI)

Embracing inapt infrastructure technology is a major threat in developing extensive and efficient Web-based systems. The architectural strength of all business models demands an effective integration of various technological components. Middleware, the ...

Qiyang Chen; John Wang

2003-01-01T23:59:59.000Z

238

Quasi light fields: Extending the light field to coherent radiation  

E-Print Network (OSTI)

Imaging technologies such as dynamic viewpoint generation are engineered for incoherent radiation using the traditional light field, and for coherent radiation using electromagnetic field theory. We present a model of ...

Accardi, Anthony J.

239

Cumulative Results of Extended Forecast Experiment. III: Precipitation  

Science Conference Proceedings (OSTI)

A diagnostic analysis and an appraisal of the precipitation calculation by the GFDL (Geophysical Fluid Dynamics Laboratory) 1967 version prediction model are presented, using two-week forecasts of 12 January and 12 July cases. The geographical ...

K. Miyakoda; R. F. Strickler

1981-04-01T23:59:59.000Z

240

Alfvenic Turbulence in the Extended Solar Corona: Kinetic Effects and Proton Heating  

E-Print Network (OSTI)

We present a model of magnetohydrodynamic (MHD) turbulence in the extended solar corona that contains the effects of collisionless dissipation and anisotropic particle heating. Measurements made by UVCS/SOHO have revived interest in the idea that ions are energized by the dissipation of ion cyclotron resonant waves, but such high-frequency (i.e., small wavelength) fluctuations have not been observed. A turbulent cascade is one possible way of generating small-scale fluctuations from a pre-existing population of low-frequency MHD waves. We model this cascade as a combination of advection and diffusion in wavenumber space. The dominant spectral transfer occurs in the direction perpendicular to the background magnetic field. As expected from earlier models, this leads to a highly anisotropic fluctuation spectrum with a rapidly decaying tail in parallel wavenumber. The wave power that decays to high enough frequencies to become ion cyclotron resonant depends on the relative strengths of advection and diffusion in the cascade. For the most realistic values of these parameters, though, there is insufficient power to heat protons and heavy ions. The dominant oblique fluctuations (with dispersion properties of kinetic Alfven waves) undergo Landau damping, which implies strong parallel electron heating. We discuss the probable nonlinear evolution of the electron velocity distributions into parallel beams and discrete phase-space holes (similar to those seen in the terrestrial magnetosphere) which can possibly heat protons via stochastic interactions.

S. R. Cranmer; A. A. van Ballegooijen

2003-05-08T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

High Pressure Materials Research: Novel Extended Phases of Molecular Triatomics  

DOE Green Energy (OSTI)

Application of high pressure significantly alters the interatomic distance and thus the nature of intermolecular interaction, chemical bonding, molecular configuration, crystal structure, and stability of solid [1]. With modern advances in high-pressure technologies [2], it is feasible to achieve a large (often up to a several-fold) compression of lattice, at which condition material can be easily forced into a new physical and chemical configuration [3]. The high-pressure thus offers enhanced opportunities to discover new phases, both stable and metastable ones, and to tune exotic properties in a wide-range of atomistic length scale, substantially greater than (often being several orders of) those achieved by other thermal (varying temperatures) and chemical (varying composition or making alloys) means. Simple molecular solids like H{sub 2}, C, CO{sub 2}, N{sub 2}, O{sub 2}, H{sub 2}O, CO, NH{sub 3}, and CH{sub 4} are bounded by strong covalent intramolecular bonds, yet relatively weak intermolecular bonds of van der Waals and/or hydrogen bonds. The weak intermolecular bonds make these solids highly compressible (i.e., low bulk moduli typically less than 10 GPa), while the strong covalent bonds make them chemically inert at least initially at low pressures. Carbon-carbon single bonds, carbon-oxygen double bonds and nitrogen-nitrogen triple bonds, for example, are among the strongest. These molecular forms are, thus, often considered to remain stable in an extended region of high pressures and high temperatures. High stabilities of these covalent molecules are also the basis of which their mixtures are often presumed to be the major detonation products of energetic materials as well as the major constituents of giant planets. However, their physical/chemical stabilities are not truly understood at those extreme pressure-temperature conditions. In fact, an increasing amount of experimental evidences contradict the assumed stability of these materials at high pressures and temperatures.

Yoo, C

2004-05-26T23:59:59.000Z

242

Engine Selection, Modeling, and Control Development for an Extended Range Electric Vehicle.  

E-Print Network (OSTI)

??Increased pressure for fuel economy improvement in combination with rapid development of battery technology has brought focus to new vehicle architectures like: hybrid electric vehicles… (more)

Cooley, Robert Bradley

2010-01-01T23:59:59.000Z

243

GA-GPU: extending a library-based global address spaceprogramming model for scalable heterogeneouscomputing systems  

Science Conference Proceedings (OSTI)

Scalable heterogeneous computing (SHC) architectures are emerging as a response to new requirements for low cost, power efficiency, and high performance. For example, numerous contemporary HPC systems are using commodity Graphical Processing Units (GPU) ... Keywords: armci, ga, gas, global address space, global arrays, gpu, nwchem, pgas

Vinod Tipparaju; Jeffrey S. Vetter

2012-05-01T23:59:59.000Z

244

Control Engineering Practice 14 (2006) 319326 Life extending control of boilerturbine systems via model  

E-Print Network (OSTI)

, fuel flow, attemperator spray flow and air flow. Like a traditional controller design, difficulties : fuel flow (kg/s), u3 : attemperator spray flow (kg/s), u4 : air flow (kg/s), y1 : drum level (m), y2, the attemperator of CO boiler in the utility power plant of SCL has been chosen as the controlled object of our

Marquez, Horacio J.

245

Numerical Modeling of Damage in Al-SiC Composites by Extended ...  

Science Conference Proceedings (OSTI)

Integrating Advanced Materials Simulation Techniques into an Automated Data Analysis Workflow at the Spallation Neutron Source · Intersecting Slip for ...

246

A distribution-free risk-reward newsvendor model: Extending Scarf's ...  

E-Print Network (OSTI)

Scarf's min-max order formula for the distribution-free risk-neutral newsvendor problem is a classical result in the field of inventory management. The min-max ...

247

Extended study on limit analysis of masonry wall with openings  

Science Conference Proceedings (OSTI)

The present study deals with limit analysis of masonry walls with rectangular openings subject to vertical and horizontal loading by means of the genetic algorithm (GA). Herein, an equivalent shear truss model whose structural parameters should be defined ... Keywords: genetic algorithm, limit analysis, masonry structure

A. Miyamura; A. DeStefano; Y. Kohama; T. Takada

2001-09-01T23:59:59.000Z

248

Forecasting ENSO Events: A Neural Network–Extended EOF Approach  

Science Conference Proceedings (OSTI)

The authors constructed neural network models to forecast the sea surface temperature anomalies (SSTA) for three regions: Niño 4, Niño 3.5, and Niño 3, representing the western-central, the central, and the eastern-central parts of the equatorial ...

Fredolin T. Tangang; Benyang Tang; Adam H. Monahan; William W. Hsieh

1998-01-01T23:59:59.000Z

249

The Skill of Extended-Range Extratropical Winter Dynamical Forecasts  

Science Conference Proceedings (OSTI)

The global T42 version of the French numerical weather prediction model has been used to produce monthly mean forecasts. A study based on 21 cases of 44-day forecasts (for winter months from 1983 to 1990) is presented. Nine forecasts in this ...

M. Déquá; J. F. Royer

1992-11-01T23:59:59.000Z

250

Extending the frontiers of mass spectrometric instrumentation and methods  

SciTech Connect

The focus of this dissertation is two-fold: developing novel analysis methods using mass spectrometry and the implementation and characterization of a novel ion mobility mass spectrometry instrumentation. The novel mass spectrometry combines ion trap for ion/ion reactions coupled to an ion mobility cell. The long term goal of this instrumentation is to use ion/ion reactions to probe the structure of gas phase biomolecule ions. The three ion source - ion trap - ion mobility - qTOF mass spectrometer (IT - IM - TOF MS) instrument is described. The analysis of the degradation products in coal (Chapter 2) and the imaging plant metabolites (Appendix III) fall under the methods development category. These projects use existing commercial instrumentation (JEOL AccuTOF MS and Thermo Finnigan LCQ IT, respectively) for the mass analysis of the degraded coal products and the plant metabolites, respectively. The coal degradation paper discusses the use of the DART ion source for fast and easy sample analysis. The sample preparation consisted of a simple 50 fold dilution of the soluble coal products in water and placing the liquid in front of the heated gas stream. This is the first time the DART ion source has been used for analysis of coal. Steven Raders under the guidance of John Verkade came up with the coal degradation projects. Raders performed the coal degradation reactions, worked up the products, and sent them to me. Gregg Schieffer developed the method and wrote the paper demonstrating the use of the DART ion source for the fast and easy sample analysis. The plant metabolite imaging project extends the use of colloidal graphite as a sample coating for atmospheric pressure LDI. DC Perdian and I closely worked together to make this project work. Perdian focused on building the LDI setup whereas Schieffer focused on the MSn analysis of the metabolites. Both Perdian and I took the data featured in the paper. Perdian was the primary writer of the paper and used it as a chapter in his dissertation. Perdian and Schieffer worked together to address the revisions and publish it in Rapid Communications in Mass Spectrometry Journal.

Schieffer, Gregg

2010-12-15T23:59:59.000Z

251

RACORO Extended-Term Aircraft Observations of Boundary-Layer Clouds  

SciTech Connect

A first-of-a-kind, extended-term cloud aircraft campaign was conducted to obtain an in-situ statistical characterization of boundary-layer clouds needed to investigate cloud processes and refine retrieval algorithms. Coordinated by the Atmospheric Radiation Measurement (ARM) Aerial Facility (AAF), the Routine AAF Clouds with Low Optical Water Depths (CLOWD) Optical Radiative Observations (RACORO) field campaign operated over the ARM Southern Great Plains (SGP) site from 22 January to 30 June 2009, collecting 260 h of data during 59 research flights. A comprehensive payload aboard the Center for Interdisciplinary Remotely-Piloted Aircraft Studies (CIRPAS) Twin Otter aircraft measured cloud microphysics, solar and thermal radiation, aerosol properties, and atmospheric state parameters. Proximity to the SGP's extensive complement of surface measurements provides ancillary data that supports modeling studies and enables evaluating a variety of surface retrieval algorithms. The five-month duration enabled sampling a range of conditions associated with the seasonal transition from winter to summer. Although about two-thirds of the cloud flights occurred in May and June, boundary-layer cloud fields were sampled under a variety of environmental and aerosol conditions, with about 75% of the flights occurring in cumulus and stratocumulus. Preliminary analyses show how these data are being used to analyze cloud-aerosol relationships, determine the aerosol sizes that are responsible for nucleating cloud drops, characterize the horizontal variability of the cloud radiative impacts, and evaluate air-borne and surface-based cloud property retrievals. We discuss how conducting an extended-term campaign requires a simplified operating paradigm that is different from that used for typical, short-term, intensive aircraft field programs.

Vogelmann, A. M.; McFarquhar, Greg; Ogren, John A.; Turner, David D.; Comstock, Jennifer M.; Feingold, G.; Long, Charles N.; Jonsson, Haf; Bucholtz, Anthony; Collins, Donald R.; Diskin, G. S.; Gerber, H.; Lawson, Paul; Woods, Roy; Andrews, Elizabeth; Yang, Hee-Jung; Chiu, Christine J.; Hartsock, Daniel; Hubbe, John M.; Lo, Chaomei; Marshak, A.; Monroe, Justin; McFarlane, Sally A.; Schmid, Beat; Tomlinson, Jason M.; Toto, Tami

2012-06-30T23:59:59.000Z

252

Extending an object-oriented design method: a C++extension for IDEF4  

E-Print Network (OSTI)

This research introduces an object-oriented implementation design method IDEF4/C++. IDEF4/C++ is an extension of the IDEF4 object-oriented design method that incorporates C++ language considerations and practice to provide guidance and structure to ease the transition from an IDEF4 conceptual design to its implementation in C++. To guide the development of IDEF4/C++, three IDEF5 ontological models are built: (1) an ontology of general object-oriented concepts; (2) an ontology of the IDEF4 method concepts; and (3) an ontology of the C++ programming language. Together these ontologies form the conceptual foundation of this research effort. They also provide a formal platform for understanding the mappings between the terminology and primitive concepts in these domains. Extensions included in the IDEF4/C++ are: (1) an extended method syntax; (2) a transformation heuristic for transforming an IDEF4 conceptual design to an IDEF4/C++ implementation specification; (3) an IDEF3 model of the IDEF4/C++ design process with design evolution configuration management; and (4) best practice guidelines for the application of IDEF4/C++, especially focusing on design reuse. The thesis concludes with a discussion of an integrated framework for object-oriented system development. Without increasing the complexity of the IDDEF4 method, IDEF4/C++ takes advantage of C++ language features and best practice experience to bridge the gap between the conceptual design phase and the implementation phase in a software development project.

Hsieh, Li-Tsung

1994-01-01T23:59:59.000Z

253

EIS-0305: Notice Extending the Public Scoping Period for the Environmental  

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

Notice Extending the Public Scoping Period for the Notice Extending the Public Scoping Period for the Environmental Impact Statement EIS-0305: Notice Extending the Public Scoping Period for the Environmental Impact Statement Transuranic Waste Treatment Facility at Oak Ridge, Tennessee The Department extends the public scoping period for a Transuranic Waste Treatment Facility at Oak Ridge, Tennessee. To ensure that the public has ample opportunity to provide comments since the public scoping meeting, the comment period is being extended until March 18, 1999. Notice of Intent To Prepare an Environmental Impact Statement for a Transuranic Waste Treatment Facility at Oak Ridge, Tennessee; Notice Extending the Public Scoping Period More Documents & Publications Audit Report: IG-0443 EIS-0309: Notice of Intent to Prepare a Site-Wide Environmental Impact

254

Final Report for "Extending BOUT++ for Solution of Edge Plasma Equations for Use in Whole Device Simulation of Tokamaks"  

SciTech Connect

In this Phase I project we have extended the BOUT++ code to solve edge fluid equations. We added a simple neutral fluid model, created a mesh generator as well as collected a set of difficult test problems for benchmarking edge codes. The work in this project should be useful as a starting point to build a complete set of edge fluid equations in BOUT++ that would enhance its ability to not only perform edge turbulence calculations, but also allow the coupled transport-turbulence equations evolved in an efficient manner.

Ammar H Hakim

2011-10-20T23:59:59.000Z

255

Extending Metadata Definitions by Automatically Extracting and Organizing Glossary Definitions  

E-Print Network (OSTI)

Metadata descriptions of database contents are required to build and use systems that access and deliver data in response to user requests. When numerous heterogeneous databases are brought together in a single system, their various metadata formalizations must be homogenized and integrated in order to support the access planning and delivery system. This integration is a tedious process that requires human expertise and attention. In this paper we describe a method of speeding up the formalization and integration of new metadata. The method takes advantage of the fact that databases are often described in web pages containing natural language glossaries that define pertinent aspects of the data. Given a root URL, our method identifies likely glossaries, extracts and formalizes aspects of relevant concepts defined in them, and automatically integrates the new formalized metadata concepts into a large model of the domain and associated conceptualizations.

Eduard Hovy; Andrew Philpot; Judith Klavans; Ulrich Germann; Peter Davis; Samuel Popper

2003-01-01T23:59:59.000Z

256

Algebraic specification and program development by stepwise refinement (Extended Abstract)  

E-Print Network (OSTI)

. Various formalizations of the concept of "refinement step" as used in the formal development of programs from algebraic specifications are presented and compared. 1 Introduction Algebraic specification aims to provide a formal basis to support the systematic development of correct programs from specifications by means of verified refinement steps. Obviously, a central piece of the puzzle is how best to formalize concepts like "specification", "program" and "refinement step". Answers are required that are simple, elegant and general and which enjoy useful properties, while at the same time taking proper account of the needs of practice. Here I will concentrate on the last of these concepts, but first I need to deal with the other two. For "program", I take the usual approach of algebraic specification whereby programs are modelled as many-sorted algebras consisting of a collection of sets of data values together with functions over those sets. This level of abstraction is commens...

Donald Sannella

1999-01-01T23:59:59.000Z

257

Modeling Entrainment and Finescale Mixing in Cumulus Clouds  

Science Conference Proceedings (OSTI)

A model used to study entrainment and mixing of thermodynamic properties in the stratus-topped boundary layer has been extended to represent these processes in cumulus clouds. The new model, called the “explicit mixing parcel model” (EMPM), ...

Steven K. Krueger; Chwen-Wei Su; Patrick A. McMurtry

1997-12-01T23:59:59.000Z

258

Multistep speaker identification using gibbs-distribution-based extended bayesian inference for rejecting unregistered speaker  

Science Conference Proceedings (OSTI)

This paper presents a method of multistep speaker identification using Gibbs-distribution-based extended Bayesian inference (GEBI) for rejecting unregistered speaker. The method is developed for our speaker recognition system which utilizes competitive ... Keywords: Gibbs-distribution-based extended bayesian inference, competitive associative net, multistep speaker identification

Yuta Mizobe; Shuichi Kurogi; Tomohiro Tsukazaki; Takeshi Nishida

2012-11-01T23:59:59.000Z

259

Real-Time Dynamic Visual Tracking Using PSD Sensors and Extended Trapezoidal Motion Planning  

Science Conference Proceedings (OSTI)

A real-time visual servo tracking system for an industrial robot has been implemented using PSD (Position Sensitive Detector) cameras, neural networks, and an extended trapezoidal motion planning method. PSD and directly transduces the light‘s ... Keywords: extended trapezoidal motion planning, locally activated neural network, position sensitive detectors, target tracking, visual servoing

Soo-Hyuk Nam; Se-Young Oh

1999-01-01T23:59:59.000Z

260

Extended Kantorovich method for static analysis of moderately thick functionally graded sector plates  

Science Conference Proceedings (OSTI)

In this paper, an iterative procedure based on the extended Kantorovich method (EKM) is presented to gain highly accurate solution for bending of moderately thick functionally graded (FG) fully clamped sector plates. Effective mechanical properties of ... Keywords: Bending analysis, Extended Kantorovich method, Fully clamped sector plates, Functionally graded material

M. M. Aghdam; N. Shahmansouri; M. Mohammadi

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Computer correction of turbulent distortions of image of extended objects on near-Earth paths  

Science Conference Proceedings (OSTI)

An algorithm of computer-based correction of images of extended objects distorted by turbulent atmosphere is developed. The method of computer correction is used to correct a distorted image of an extended object on a horizontal 2300-m-long observation path. The angular size of the corrected-image region was 15'. (image processing)

Averin, A P; Morozov, Yu B; Pryanichkov, V S; Tyapin, V V [Federal State Unitary Enterprise 'I.S.Kos'minov State Scientific-Research Test Laser Centre of Russian Federation 'Raduga' (Russian Federation)

2011-05-31T23:59:59.000Z

262

Borehole Miner - Extendible Nozzle Development for Radioactive Waste Dislodging and Retrieval from Underground Storage Tanks  

Science Conference Proceedings (OSTI)

This report summarizes development of borehole-miner extendible-nozzle water-jetting technology for dislodging and retrieving salt cake, sludge} and supernate to remediate underground storage tanks full of radioactive waste. The extendible-nozzle development was based on commercial borehole-miner technology.

CW Enderlin; DG Alberts; JA Bamberger; M White

1998-09-25T23:59:59.000Z

263

Transport Model with Quasipions  

E-Print Network (OSTI)

We extend the normal transport model to include the medium effect on pions by treating them as quasiparticles. The property of the quasipion is determined using the delta-hole model. Modelling heavy-ion collisions at intermediate energies with the new transport equations, we find that it leads to an enhanced production of pions with low kinetic energies. This gives a plausible explanation for the observed enhancement of soft pions in the Bevalac experiments.

Xiong, L.; Ko, Che Ming; Koch, V.

1993-01-01T23:59:59.000Z

264

DOE extends the Idaho Cleanup Project Contract for Three Years | Department  

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

extends the Idaho Cleanup Project Contract for Three Years extends the Idaho Cleanup Project Contract for Three Years DOE extends the Idaho Cleanup Project Contract for Three Years September 25, 2012 - 12:00pm Addthis Media Contacts Brad Bugger 208-526-0833 Danielle Miller 208-526-5709 Idaho Falls, ID - The U.S. Department of Energy has extended by three years its contract with the company currently operating the Idaho Cleanup Project at the department's Idaho Site. CH2M-WG Idaho, LLC's (CWI) period of performance on the current contract ends September 30, 2012. DOE extended their contract through September 30, 2015, and the anticipated dollar value of this extension is $730 million. This extension will help ensure that the government receives the highest return on investment for its environmental restoration work. Since 2005,

265

DOE extends the Idaho Cleanup Project Contract for Three Years | Department  

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

extends the Idaho Cleanup Project Contract for Three Years extends the Idaho Cleanup Project Contract for Three Years DOE extends the Idaho Cleanup Project Contract for Three Years September 25, 2012 - 12:00pm Addthis Media Contacts Brad Bugger 208-526-0833 Danielle Miller 208-526-5709 Idaho Falls, ID - The U.S. Department of Energy has extended by three years its contract with the company currently operating the Idaho Cleanup Project at the department's Idaho Site. CH2M-WG Idaho, LLC's (CWI) period of performance on the current contract ends September 30, 2012. DOE extended their contract through September 30, 2015, and the anticipated dollar value of this extension is $730 million. This extension will help ensure that the government receives the highest return on investment for its environmental restoration work. Since 2005,

266

U.S. Department of Energy to Extend Pacific Northwest National Laboratory  

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

to Extend Pacific Northwest National to Extend Pacific Northwest National Laboratory Management and Operating Contract U.S. Department of Energy to Extend Pacific Northwest National Laboratory Management and Operating Contract October 3, 2008 - 4:14pm Addthis Washington, DC - Secretary of Energy Samuel W. Bodman today announced his decision to authorize a four-year contract extension for the management and operation of the U.S. Department of Energy's (DOE) Pacific Northwest National Laboratory (PNNL), located in Richland, Washington, to Battelle Memorial Institute, a non-profit organization based in Columbus, Ohio. The Battelle management and operating (M&O) contract will be extended through September 30, 2012. DOE's decision would also extend a companion contract, the Battelle "Use

267

EIS-0385: Notice to Extend the Public Scoping Period and Reschedule Public  

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

EIS-0385: Notice to Extend the Public Scoping Period and Reschedule EIS-0385: Notice to Extend the Public Scoping Period and Reschedule Public Scoping Meetings EIS-0385: Notice to Extend the Public Scoping Period and Reschedule Public Scoping Meetings Strategic Petroleum Reserve Due to the extraordinary circumstances created by Hurricane Katrina in the region where the proposed action and public scoping meetings will take place, DOE has extended the public scoping period and revised the dates and locations of the public scoping meetings originally announced in the Notice of Intent to Prepare an Environmental Impact Statement 70 FR 52088; September 1, 2005). DOE/EIS-0385, Department of Energy, Environmental Impact Statement: Site Selection for the Expansion of the Strategic Petroleum Reserve, Notice to Extend the Public Scoping Period and Reschedule Public Scoping Meetings, 70

268

EIS-0385: Notice to Extend the Public Scoping Period and Reschedule Public  

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

Notice to Extend the Public Scoping Period and Reschedule Notice to Extend the Public Scoping Period and Reschedule Public Scoping Meetings EIS-0385: Notice to Extend the Public Scoping Period and Reschedule Public Scoping Meetings Strategic Petroleum Reserve Due to the extraordinary circumstances created by Hurricane Katrina in the region where the proposed action and public scoping meetings will take place, DOE has extended the public scoping period and revised the dates and locations of the public scoping meetings originally announced in the Notice of Intent to Prepare an Environmental Impact Statement 70 FR 52088; September 1, 2005). DOE/EIS-0385, Department of Energy, Environmental Impact Statement: Site Selection for the Expansion of the Strategic Petroleum Reserve, Notice to Extend the Public Scoping Period and Reschedule Public Scoping Meetings, 70

269

Extended Coronal Heating and Solar Wind Acceleration Over the Solar Cycle  

E-Print Network (OSTI)

This paper reviews our growing understanding of the physics behind coronal heating (in open-field regions) and the acceleration of the solar wind. Many new insights have come from the last solar cycle's worth of observations and theoretical work. Measurements of the plasma properties in the extended corona, where the primary solar wind acceleration occurs, have been key to discriminating between competing theories. We describe how UVCS/SOHO measurements of coronal holes and streamers over the last 14 years have provided clues about the detailed kinetic processes that energize both fast and slow wind regions. We also present a brief survey of current ideas involving the coronal source regions of fast and slow wind streams, and how these change over the solar cycle. These source regions are discussed in the context of recent theoretical models (based on Alfven waves and MHD turbulence) that have begun to successfully predict both the heating and acceleration in fast and slow wind regions with essentially no fre...

Cranmer, Steven R; Miralles, Mari Paz; van Ballegooijen, Adriaan A

2010-01-01T23:59:59.000Z

270

PU/SS EUTECTIC ASSESSMENT IN 9975 PACKAGINGS IN A STORAGE FACILITY DURING EXTENDED FIRE  

SciTech Connect

In a radioactive material (RAM) packaging, the formation of eutectic at the Pu/SS (plutonium/stainless steel) interface is a serious concern and must be avoided to prevent of leakage of fissile material to the environment. The eutectic temperature for the Pu/SS is rather low (410 C) and could seriously impact the structural integrity of the containment vessel under accident conditions involving fire. The 9975 packaging is used for long term storage of Pu bearing materials in the DOE complex where the Pu comes in contact with the stainless steel containment vessel. Due to the serious consequences of the containment breach at the eutectic site, the Pu/SS interface temperature is kept well below the eutectic formation temperature of 410 C. This paper discusses the thermal models and the results for the extended fire conditions (1500 F for 86 minutes) that exist in a long term storage facility and concludes that the 9975 packaging Pu/SS interface temperature is well below the eutectic temperature.

Gupta, N.

2012-03-26T23:59:59.000Z

271

Chandra Observations of MRK 273 Unveiling the Central AGN and the Extended Hot Gas Halo  

E-Print Network (OSTI)

We report X-ray observations of the field containing the ultraluminous IRAS galaxy Mrk~273 Using the ACIS-S3 instrument on board Chandra. The high resolution X-ray image, for the first time, reveals a compact hard X-ray nucleus in Mrk~273. Its X-ray energy distribution is well described by a heavily obscured power-law spectrum plus a narrow $\\Feka$ emission line at 6.4 keV. The neutral hydrogen column density is about $4\\times10^{23}\\cm^{-2}$, implying an absorption -corrected X-ray luminosity (0.1--10 keV) for the nucleus of $\\Lx\\approx 6.5\\times 10^{43} \\ergs$. There are also bright soft X-ray clumps and diffuse soft X-ray emissions surrounding the central hard X-ray nucleus within the $10\\arcsec$ of the nuclear region. Its spectrum can be fitted by a MEKAL thermal model with temperature of about 0.8 keV and high metallicity ($Z\\sim 1.5Z_\\odot$) plus emission lines from $\\alpha$ elements and ions. Further outside the central region, the Chandra observations reveal a very extended hot gas halo with a project...

Xia, X Y; Mao, S; Boller, T; Deng, Z G; Wu, H; Boller, Th.

2001-01-01T23:59:59.000Z

272

The Macroscopic Approach to Extended Thermodynamics with 14 Moments, Up to Whatever Order  

E-Print Network (OSTI)

Extended Thermodynamics is the natural framework in which to study the physics of fluids, because it leads to symmetric hyperbolic systems of field laws, thus assuming important properties such as finite propagation speeds of shock waves and well posedness of the Cauchy problem. The closure of the system of balance equations is obtained by imposing the entropy principle and that of galilean relativity. If we take the components of the mean field as independent variables, these two principles are equivalent to some conditions on the entropy density and its flux. The method until now used to exploit these conditions, with the macroscopic approach, has not been used up to whatever order with respect to thermodynamical equilibrium. This is because it leads to several difficulties in calculations. Now these can be overcome by using a new method proposed recently by Pennisi and Ruggeri. Here we apply it to the 14 moments model. We will also show that the 13 moments case can be obtained from the present one by using the method of subsystems.

Sebastiano Pennisi; Maria Cristina Carrisi

2007-03-01T23:59:59.000Z

273

Integrable Scalar Cosmologies II. Can they fit into Gauged Extended Supergavity or be encoded in N=1 superpotentials?  

E-Print Network (OSTI)

The question whether the integrable one-field cosmologies classified in a previous paper by Fre, Sagnotti and Sorin can be embedded as consistent one-field truncations into Extended Gauged Supergravity or in N=1 supergravity gauged by a superpotential without the use of D-terms is addressed in this paper. The answer is that such an embedding is very difficult and rare but not impossible. Indeed we were able to find two examples of integrable models embedded in Supergravity in this way. Both examples are fitted into N=1 Supergravity by means of a very specific and interesting choice of the superpotential W(z). The question whether there are examples of such an embedding in extended Gauged Supergravity remains open. In the present paper, relying on the embedding tensor formalism we classified all gaugings of the N=2 STU model, confirming, in the absence on hypermultiplets, the uniqueness of the stable de Sitter vacuum found several years ago by Fre, Trigiante and Van Proeyen and excluding the embedding of any i...

Fre, P; Trigiante, M

2013-01-01T23:59:59.000Z

274

Tuning Band Gap Energies in Pb3(C6X6) Extended Solid-State Structures  

SciTech Connect

A detailed plane-wave density functional theory investigation of the solid-state properties of the extended organometallic system Pb{sub 3}C{sub 6}X{sub 6} for X = O, S, Se, and Te has been performed. Initial geometry parameters for the Pb-X and C-X bond distances were obtained from optimized calculations on molecular fragment models. The Pb{sub 3}C{sub 6}X{sub 6} extended solid molecular structures were constructed in the space group P6/mmm on the basis of the known structure for X = S. Ground-state geometries, band gap energies, densities of states, and charge densities were calculated with the PBE-generalized gradient exchange-correlation functional and the HSE06 hybrid exchange-correlation functional. The PBE band gap energies were found to be lower than the HSE06 values by >0.7 eV. The band energies at points of high symmetry along the first Brillouin zone in the crystal were larger than the overall band gap of the system. Pb{sub 3}C{sub 6}O{sub 6} was predicted to be a direct semiconductor ({Lambda} point) with a PBE band gap of 0.28 eV and an HSE06 band gap of 1.06 eV. Pb{sub 3}C{sub 6}S{sub 6} and Pb{sub 3}C{sub 6}Se{sub 6} were predicted to have indirect band gaps. The PBE band gap for Pb{sub 3}C{sub 6}S{sub 6} was 0.98 eV, and the HSE06 band gap was 1.91 eV. The HSE06 value is in good agreement with the experimentally observed band gap of 1.7 eV. Pb{sub 3}C{sub 6}Se{sub 6} has a PBE band gap of 0.56 eV and a HSE06 band gap of 1.41 eV. Pb{sub 3}C{sub 6}Te{sub 6} was predicted to be metallic with both of the PBE and HSE06 functionals. A detailed analysis of the PBE band structure and partial density of states at two points before and after the metallic behavior reveals a change in orbital character indicative of band crossing in Pb{sub 3}C{sub 6}Te{sub 6}. These results show that the band gap energies can be fine-tuned by changing the substituent X atom.

Stott, Amanda C.; Vaid, Thomas P.; Bylaska, Eric J.; Dixon, David A.

2012-04-19T23:59:59.000Z

275

Development of an extender protocol to enhance the viability of frozen-thawed bovine spermatozoa  

E-Print Network (OSTI)

Determination of an extender protocol which will enhance the viability of frozenthawed bovine spermatozoa will allow producers to obtain higher conception rates due to the increased survival rate of the spermatozoa. Ejaculates of six Brangus bulls (age=18 months) were evaluated for spermatozoal motility, acrosomal integrity, and morphological characteristics (collectively called spermatozoal viability) in two experiments to test our hypotheses that (1) the treatment combination of a 4 hr cooling duration and a 2 hr equilibration with glycerol will result in optimum spermatozoal characteristics after freezing and thawing and (2) rank of three selected extenders relative to their effects on spermatozoal viability after freezing and thawing will be egg yolk-citrate (EC), egg yolk-tris (IMV), and skim milk (milk). In experiment 1, an ejaculate from each bull was partially extended and cooled to 4 ºC for either 2 or 4 hr and then allowed to equilibrate with the glycerolated extender for 2, 4, or 6 hr. Spermatozoal viability was assessed at 0, 3, 6, and 9 hr after thawing. In experiment 1, 4 hr of cooling resulted in a higher percentage of motile spermatozoa than did 2 hr of cooling. The 2 hr equilibration with glycerol yielded lower percentages of motile spermatozoa, acrosomal integrity, and morphologically normal spermatozoa than 4 and 6 hr equilibration durations with glycerol. In experiment 2, we observed a decrease in spermatozoal viability for all three extenders upon freezing and thawing. Viability of frozen-thawed spermatozoa extended in the milk was reduced for all incubation durations, and the IMV extender had a higher percentage of motile spermatozoa than the EC extender at 6 hr of incubation. A higher percentage of intact acrosomes was observed with the IMV extender; however, the EC extender had a higher percentage of morphologically normal spermatozoa than the IMV extender. Our results indicate that at cooling duration of 4 hr and a 4 hr equilibration with glycerol provide the highest level of spermatozoal viability post-thaw of the treatments evaluated and that the IMV extender enhances the percentage of spermatozoa with an intact acrosome for frozenthawed spermatozoa over the EC and skim milk extenders.

Griffin, Erin Michelle

2004-12-01T23:59:59.000Z

276

Integrable Scalar Cosmologies II. Can they fit into Gauged Extended Supergavity or be encoded in N=1 superpotentials?  

E-Print Network (OSTI)

The question whether the integrable one-field cosmologies classified in a previous paper by Fre, Sagnotti and Sorin can be embedded as consistent one-field truncations into Extended Gauged Supergravity or in N=1 supergravity gauged by a superpotential without the use of D-terms is addressed in this paper. The answer is that such an embedding is very difficult and rare but not impossible. Indeed we were able to find two examples of integrable models embedded in Supergravity in this way. Both examples are fitted into N=1 Supergravity by means of a very specific and interesting choice of the superpotential W(z). The question whether there are examples of such an embedding in extended Gauged Supergravity remains open. In the present paper, relying on the embedding tensor formalism we classified all gaugings of the N=2 STU model, confirming, in the absence on hypermultiplets, the uniqueness of the stable de Sitter vacuum found several years ago by Fre, Trigiante and Van Proeyen and excluding the embedding of any integrable cosmological model. A detailed analysis of the space of exact solutions of the first Supergravity embedded integrable cosmological model revealed several new features worth an in depth consideration. When the scalar potential has an extremum at a negative value, the universe necessarily collapses into a Big Crunch notwithstanding its spatial flatness. The causal structure of these universes is quite different from that of the closed, positive curved, universe: indeed in this case the particle and event horizons do not coincide and develop complicated patterns. The cosmological consequences of this unexpected mechanism deserve careful consideration.

P. Fre; A. S. Sorin; M. Trigiante

2013-10-20T23:59:59.000Z

277

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

278

Source Characterization with a Genetic Algorithm–Coupled Dispersion–Backward Model Incorporating SCIPUFF  

Science Conference Proceedings (OSTI)

This paper extends the approach of coupling a forward-looking dispersion model with a backward model using a genetic algorithm (GA) by incorporating a more sophisticated dispersion model [the Second-Order Closure Integrated Puff (SCIPUFF) model] ...

Christopher T. Allen; Sue Ellen Haupt; George S. Young

2007-03-01T23:59:59.000Z

279

Managing Aging Effects on Dry Cask Storage Systems for Extended Long Term  

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

Managing Aging Effects on Dry Cask Storage Systems for Extended Managing Aging Effects on Dry Cask Storage Systems for Extended Long Term Storage and Transportation of Used Fuel Rev0 Managing Aging Effects on Dry Cask Storage Systems for Extended Long Term Storage and Transportation of Used Fuel Rev0 The report is intended to help assess and establish the technical basis for extended long-term storage and transportation of used nuclear fuel. It provides: 1) an overview of the ISFSI license renewal process based on 10 CFR 72 and the guidance provided in NUREG-1927; 2) definitions and terms for structures and components in DCSSs, materials, environments, aging effects, and aging mechanisms; 3) TLAAs and AMPs, respectively, that have been developed for managing aging effects on the SSCs important to safety in the dry cask storage system designs; and 4) AMPs and TLAAs for the SSCs

280

DOE to Extend Savannah River Nuclear Solutions Contract at Savannah River  

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

to Extend Savannah River Nuclear Solutions Contract at Savannah to Extend Savannah River Nuclear Solutions Contract at Savannah River Site to September 2016 DOE to Extend Savannah River Nuclear Solutions Contract at Savannah River Site to September 2016 September 6, 2012 - 12:00pm Addthis Media Contact Bill Taylor 803-952-8564 bill.taylor@srs.gov Aiken, SC -- The Department of Energy's (DOE) Savannah River Operations Office today exercised its option to extend the current Savannah River Site Management and Operating contract with Savannah River Nuclear Solutions, LLC (SRNS) for an additional 38 months, from August 1, 2013 to September 2016. The SRNS contract was competatviely awareded January 10, 2008. The total value of the SRNS contract with the extension is approximately $8 billion. The current contract provides for management and operations of Savannah

Note: This page contains sample records for the topic "favar extended 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

FAQs: Have Tax Credits Been Extended Into 2012? | Department of Energy  

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

Have Tax Credits Been Extended Into 2012? Have Tax Credits Been Extended Into 2012? FAQs: Have Tax Credits Been Extended Into 2012? January 6, 2012 - 4:29pm Addthis It hasn't been 2012 very long, and we're already getting inquiries regarding federal tax credits. Since we know everyone likes to save money and energy - preferably at the same time - here is the rundown on what you can get tax credits for, and how long you have to get them. First, we'll answer the question: Have the 2011 federal tax credits been extended into 2012? The short answer is, no. There have been no extensions to the federal tax credits. If that changes, however, we will update you here on the blog and on our Tax Credits for Energy Efficiency page. Next, we'll add some clarification about the tax credits: The Products Eligible for Tax Credits Through 2011 are documented in Part I

282

Report on Assessment of Environmentally--Assisted Fatigue for LWR Extended  

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

on Assessment of Environmentally--Assisted Fatigue for LWR on Assessment of Environmentally--Assisted Fatigue for LWR Extended Service Conditions Report on Assessment of Environmentally--Assisted Fatigue for LWR Extended Service Conditions This report provides an update on the assessment of environmentally-assisted fatigue for light water reactor (LWR) extended service conditions. The report is a deliverable in FY11 under the work package for LWRS under the Advanced Reactor Concepts. Most of the current fleet of aging LWRs were designed using the 1970s version of the ASME Boiler and Pressure Vessels Code, Section III, and are reaching their design lifetime of 30-40 yrs. For economic reasons, the utilities have great interest in extending the operating life of the plants via the Nuclear Regulatory Commission (NRC) licensing renewal application

283

Department of Energy Extends Comment Period on Proposed Revisions to its  

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

Extends Comment Period on Proposed Revisions Extends Comment Period on Proposed Revisions to its NEPA Rules Department of Energy Extends Comment Period on Proposed Revisions to its NEPA Rules February 17, 2011 - 5:29pm Addthis The Department of Energy today announced that, in response to requests from a number of parties, it has re-opened the public comment period on its proposed revisions to the Department's NEPA rules. The public comment period will be extended three weeks and will now close on March 7, 2011. DOE, on January 3, 2011, issued a Notice of Proposed Rulemaking to amend its regulations governing compliance with the National Environmental Policy Act (NEPA). The proposals focus primarily on the Department's categorical exclusion provisions, and reflect the first update to these provisions in

284

EIS-0380: Notice to Extend Comment Period on the Draft Site-Wide  

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

to Extend Comment Period on the Draft Site-Wide to Extend Comment Period on the Draft Site-Wide Environmental Impact Statement EIS-0380: Notice to Extend Comment Period on the Draft Site-Wide Environmental Impact Statement Continued Operation of Los Alamos National Laboratory, Los Alamos, New Mexico In response to requests for additional time to review and comment on the document, NNSA is extending the public comment period until September 20, 2006. DOE/EIS-0380, Department of Energy, National Nuclear Security Administration, Extension of Comment Period on the Draft Site-Wide Environmental Impact Statement for Continued Operation of Los Alamos National Laboratory, Los Alamos, New Mexico, 76 FR 40352 (August 2006) More Documents & Publications EIS-0380: DOE Notice of Availability of the Draft Site-Wide Environmental

285

V-098: Linux Kernel Extended Verification Module Bug Lets Local Users Deny  

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

8: Linux Kernel Extended Verification Module Bug Lets Local 8: Linux Kernel Extended Verification Module Bug Lets Local Users Deny Service V-098: Linux Kernel Extended Verification Module Bug Lets Local Users Deny Service February 25, 2013 - 12:12am Addthis PROBLEM: Linux Kernel Extended Verification Module Bug Lets Local Users Deny Service PLATFORM: The Linux Kernel prior to 3.7.5 ABSTRACT: A vulnerability was reported in the Linux Kernel. REFERENCE LINKS: The Linux Kernel Archives Linux Kernel Red Hat Bugzilla - Bug 913266 SecurityTracker Alert ID: 1028196 CVE-2013-0313 IMPACT ASSESSMENT: Medium DISCUSSION: A local user can exploit a null pointer dereference in the evm_update_evmxattr() function in 'security/integrity/evm/evm_crypto.c' to cause the target system to crash. IMPACT: A local user can cause denial of service conditions.

286

Report on Assessment of Environmentally--Assisted Fatigue for LWR Extended  

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

on Assessment of Environmentally--Assisted Fatigue for LWR on Assessment of Environmentally--Assisted Fatigue for LWR Extended Service Conditions Report on Assessment of Environmentally--Assisted Fatigue for LWR Extended Service Conditions This report provides an update on the assessment of environmentally-assisted fatigue for light water reactor (LWR) extended service conditions. The report is a deliverable in FY11 under the work package for LWRS under the Advanced Reactor Concepts. Most of the current fleet of aging LWRs were designed using the 1970s version of the ASME Boiler and Pressure Vessels Code, Section III, and are reaching their design lifetime of 30-40 yrs. For economic reasons, the utilities have great interest in extending the operating life of the plants via the Nuclear Regulatory Commission (NRC) licensing renewal application

287

Extended Reconstruction of Global Sea Surface Temperatures Based on COADS Data (1854–1997)  

Science Conference Proceedings (OSTI)

A monthly extended reconstruction of global SST (ERSST) is produced based on Comprehensive Ocean–Atmosphere Data Set (COADS) release 2 observations from the 1854–1997 period. Improvements come from the use of updated COADS observations with new ...

Thomas M. Smith; Richard W. Reynolds

2003-05-01T23:59:59.000Z

288

Structure and Effects of Extended Defects in Polycrystalline Si Thin Films  

DOE Green Energy (OSTI)

The structure and effects of extended defects in rapid deposited polycrystalline Si thin films were studied using a combination of high-resolution transmission electron microscopy and first-principles total energy calculations.

Yan, Y.; Al-Jassim, M. M.; Wang, T. H.; Ciszek, T. F.

2000-01-01T23:59:59.000Z

289

Tab-Trees: A CASE Tool for the Design of Extended Tabular Systems  

Science Conference Proceedings (OSTI)

Tabular Systems constitute a particular form of rule-based systems. They follow the pattern of Relational Databases and Attributive Decision Tables. In Extended Tabular Systems non-atomic values of attributes are allowed. In order to assure safe, reliable ...

Antoni Ligeza; Igor Wojnicki; Grzegorz J. Nalepa

2001-09-01T23:59:59.000Z

290

Creating supply chain visibility : a case study on extending Intel's Unit Level Traceability to customers  

E-Print Network (OSTI)

In an effort to enable supply chain visibility for Intel products, the Customer Unit Level Traceability (ULT) Program was formed to help extend Intel's ULT capability to the customer level. Increased traceability of Intel ...

Kang, Annie

2012-01-01T23:59:59.000Z

291

Calibrated Short-Range Ensemble Precipitation Forecasts Using Extended Logistic Regression with Interaction Terms  

Science Conference Proceedings (OSTI)

Extended logistic regression has been shown to be a method well suited to calibrating precipitation forecasts from medium-range ensemble prediction systems. The extension of the logistic regression unifies the separate predictive equations for ...

Zied Ben Bouallègue

2013-04-01T23:59:59.000Z

292

Reducing inventory and order delivery time in an internal extended value chain  

E-Print Network (OSTI)

The extended value stream for the ABB Power Technologies Medium Voltage Business Area consists of numerous factories situated across various different countries. Most of these facilities were originally acquired by ABB to ...

Siefering, Brian W

2005-01-01T23:59:59.000Z

293

Memory technology for extended large-scale integration in future electronics applications  

Science Conference Proceedings (OSTI)

Extending 2-D planar topologies in integrated circuits (ICs) to a 3-D implementation has the obvious benefits of reducing the overall footprint and average interconnection length, with associated improvements in cost, and delay and energy consumption, ...

Dinesh Pamunuwa

2008-03-01T23:59:59.000Z

294

Does Extending Daylight Saving Time Save Energy? Evidence from an Australian Experiment  

E-Print Network (OSTI)

CSEM WP 163 Does Extending Daylight Saving Time Save Energy?advantage of the fact that DST does not affect electricityHowever, the simulation does not include non-residential

KELLOGG, RYAN M; Wolff, Hendrik

2007-01-01T23:59:59.000Z

295

DOE Extends Public Comment Period for the Draft Uranium Leasing Program Programmatic Environmental Impact Statement  

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

The U.S. Department of Energy (DOE) today announced that the public comment period for the Draft Uranium Leasing Program Programmatic Environmental Impact Statement (ULP PEIS) has been extended to May 31, 2013.

296

An Extended Procedure for Implementing the Relative Operating Characteristic Graphical Method  

Science Conference Proceedings (OSTI)

The functional relationship between the relative operating characteristic (ROC) and the economic value (EV) graphical methods have been exploited to develop a hybrid procedure called the extended ROC (EROC) method. The EROC retains the appealing ...

Fredrick H. M. Semazzi; Roberto J. Mera

2006-09-01T23:59:59.000Z

297

An Extended Kalman Filter Framework for Polarimetric X-Band Weather Radar Data Processing  

Science Conference Proceedings (OSTI)

The different quantities measured by dual-polarization radar systems are closely linked to each other. An extended Kalman filter framework is proposed in order to make use of constraints on individual radar observables that are induced by these ...

Marc Schneebeli; Alexis Berne

2012-05-01T23:59:59.000Z

298

extended abstract  

Science Conference Proceedings (OSTI)

temperature is lowered to 700 ºC prior to flowing propane into the chamber. ... of propane gas at higher temperature enhances void formation, leading to ...

299

Impact of Extended Daylight Saving Time on National Energy Consumption Report to Congress  

SciTech Connect

The Energy Policy Act of 2005 (Pub. L. No. 109-58; EPAct 2005) amended the Uniform Time Act of 1966 (Pub. L. No. 89-387) to increase the portion of the year that is subject to Daylight Saving Time. (15 U.S.C. 260a note) EPAct 2005 extended the duration of Daylight Saving Time in the spring by changing its start date from the first Sunday in April to the second Sunday in March, and in the fall by changing its end date from the last Sunday in October to the first Sunday in November. (15 U.S.C. 260a note) EPAct 2005 also called for the Department of Energy to evaluate the impact of Extended Daylight Saving Time on energy consumption in the United States and to submit a report to Congress. (15 U.S.C. 260a note) This report presents the results of impacts of Extended Daylight Saving Time on the national energy consumption in the United States. The key findings are: (1) The total electricity savings of Extended Daylight Saving Time were about 1.3 Tera Watt-hour (TWh). This corresponds to 0.5 percent per each day of Extended Daylight Saving Time, or 0.03 percent of electricity consumption over the year. In reference, the total 2007 electricity consumption in the United States was 3,900 TWh. (2) In terms of national primary energy consumption, the electricity savings translate to a reduction of 17 Trillion Btu (TBtu) over the spring and fall Extended Daylight Saving Time periods, or roughly 0.02 percent of total U.S. energy consumption during 2007 of 101,000 TBtu. (3) During Extended Daylight Saving Time, electricity savings generally occurred over a three- to five-hour period in the evening with small increases in usage during the early-morning hours. On a daily percentage basis, electricity savings were slightly greater during the March (spring) extension of Extended Daylight Saving Time than the November (fall) extension. On a regional basis, some southern portions of the United States exhibited slightly smaller impacts of Extended Daylight Saving Time on energy savings compared to the northern regions, a result possibly due to a small, offsetting increase in household air conditioning usage. (4) Changes in national traffic volume and motor gasoline consumption for passenger vehicles in 2007 were determined to be statistically insignificant and therefore, could not be attributed to Extended Daylight Saving Time.

Belzer, D. B.; Hadley, S. W.; Chin, S-M.

2008-10-01T23:59:59.000Z

300

09/13/2007 08:42 PMTweaking Genes Could Extend ALS Survival Page 1 of 1http://health.usnews.com/usnews/health/healthday/070913/tweaking-genes-could-extend-als-survival.htm  

E-Print Network (OSTI)

09/13/2007 08:42 PMTweaking Genes Could Extend ALS Survival Page 1 of 1http://health.usnews.com/usnews/health/healthday/070913/tweaking-genes-could-extend-als-survival.htm Tweaking Genes Could Extend ALS Survival Mouse study.S. scientists say they've spotted genes that influence survival in mice with amyotrophic lateral sclerosis (ALS

Engelhardt, John F.

Note: This page contains sample records for the topic "favar extended 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

3D Extended Logging for Geothermal Resources: Field Trials with the Geo-Bilt System  

DOE Green Energy (OSTI)

Geo-BILT (Geothermal Borehole Induction Logging Tool) is an extended induction logging tool designed for 3D resistivity imaging around a single borehole. The tool was developed for deployment in high temperature geothermal wells under a joint program funded by the California Energy Commission, Electromagnetic Instruments (EMI) and the U.S. Department of Energy. EM1 was responsible for tool design and manufacture, and numerical modeling efforts were being addressed at Lawrence Livermore Laboratory (LLNL) and other contractors. The field deployment was done by EM1 and LLNL. The tool operates at frequencies from 2 to 42 kHz, and its design features a series of three-component magnetic sensors offset at 2 and 5 meters from a three-component magnetic source. The combined package makes it possible to do 3D resistivity imaging, deep into the formation, from a single well. The manufacture and testing of the tool was completed in spring of 2001, and the initial deployment of Geo-BILT occurred in May 2001 at the Lost Hills oil field in southern California at leases operated by Chevron USA. This site was chosen for the initial field test because of the favorable geological conditions and the availability of a number of wells suitable for tool deployment. The second deployment occurred in April 2002 at the Dixie Valley geothermal field, operated by Caithness Power LLC, in central Nevada. This constituted the first test in a high temperature environment. The Chevron site features a fiberglass-cased observation well in the vicinity of a water injector. The injected water, which is used for pressure maintenance and for secondary sweep of the heavy oil formation, has a much lower resistivity than the oil bearing formation. This, in addition to the non-uniform flow of this water, creates a 3D resistivity structure, which is analogous to conditions produced from flowing fractures adjacent to geothermal boreholes. Therefore, it is an excellent site for testing the 3D capability of the tool in a low risk environment. The Dixie Valley site offered an environment where the tool could locate near-well fractures associated with steam development. The Lost Hills field measurements yielded a data set suitable for 3D imaging. The Geo-BLT data corresponded to existing conventional logging data and showed clear indications, in several depth intervals, of near-well 3D structure. Subsequent 3D inversion of these data produced a model consistent with non-planar water flow in specific layers. The Dixie Valley measurements identified structures associated with dike intrusions and water inflow at particular depths. Preliminary analysis suggests these structures are steeply dipping, which is consistent with the geology.

Mallan, R; Wilt, M; Kirkendall, B; Kasameyer, P

2002-05-29T23:59:59.000Z

302

Simulating animal spirits in actor-based environmental models  

Science Conference Proceedings (OSTI)

As a first step towards extending the MADIAM model reported previously to a model hierarchy MADIAMS (Multi-Actor Dynamic Integrated Assessment Model System), we upgrade the basic economic model M2 of the three model levels M1-M3 of MADIAMS to include ... Keywords: Actor-based model, Climate change, Instability, Integrated assessment, System dynamics

Klaus Hasselmann, Dmitry V. Kovalevsky

2013-06-01T23:59:59.000Z

303

A Discontinuous Galerkin Global Shallow Water Model  

Science Conference Proceedings (OSTI)

A discontinuous Galerkin shallow water model on the cubed sphere is developed, thereby extending the transport scheme developed by Nair et al. The continuous flux form nonlinear shallow water equations in curvilinear coordinates are employed. The ...

Ramachandran D. Nair; Stephen J. Thomas; Richard D. Loft

2005-04-01T23:59:59.000Z

304

A Multiscale Anelastic Model for Meteorological Research  

Science Conference Proceedings (OSTI)

The recently reported nonhydrostatic anelastic numerical model for simulating a range of atmospheric processes on scales from micro to planetary is extended to moist processes. A theoretical formulation of moist precipitating thermodynamics ...

Wojciech W. Grabowski; Piotr K. Smolarkiewicz

2002-04-01T23:59:59.000Z

305

Policy Core Information Model (PCIM) Extensions  

Science Conference Proceedings (OSTI)

This document specifies a number of changes to the Policy Core Information Model (PCIM, RFC 3060). Two types of changes are included. First, several completely new elements are introduced, for example, classes for header filtering, that extend PCIM ...

B. Moore

2003-01-01T23:59:59.000Z

306

The Community Earth System Model: A Framework for Collaborative Research  

Science Conference Proceedings (OSTI)

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

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

2013-09-01T23:59:59.000Z

307

Gap Analysis to Support Extended Storage of Used Nuclear Fuel | Department  

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

Gap Analysis to Support Extended Storage of Used Nuclear Fuel Gap Analysis to Support Extended Storage of Used Nuclear Fuel Gap Analysis to Support Extended Storage of Used Nuclear Fuel The U.S. Department of Energy Office of Nuclear Energy (DOE-NE), Office of Fuel Cycle Technology, has established the Used Fuel Disposition Campaign (UFDC) to conduct the research and development activities related to storage, transportation, and disposal of used nuclear fuel and high-level radioactive waste. The mission of the UFDC is to identify alternatives and conduct scientific research and technology development to enable storage, transportation and disposal of used nuclear fuel (UNF) and wastes generated by existing and future nuclear fuel cycles. The Storage and Transportation staff within the UFDC are responsible for addressing issues regarding the

308

DOE Extends Comment Period on Notice of Inquiry Under the Energy  

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

Notice of Inquiry Under the Energy Notice of Inquiry Under the Energy Independence and Security Act DOE Extends Comment Period on Notice of Inquiry Under the Energy Independence and Security Act August 18, 2010 - 4:33pm Addthis Today, in response to a formal request, General Counsel Scott Blake Harris approved a 30-day extension of the public comment period on DOE's Notice of Inquiry (75 FR 43945) soliciting comment on the development of regulations to carry out section 934 of the Energy Independence and Security Act of 2007, which implements the Convention on Supplementary Compensation for Nuclear Damage. The public comment period will be extended to October 27, 2010. The signed extension which is provided here, will be published shortly in the Federal Register. Addthis Related Articles DOE Extends Comment Period on Notice of Inquiry Under the Energy

309

DOE Extends Public Comment Period for the Draft Uranium Leasing Program  

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

the Draft Uranium Leasing the Draft Uranium Leasing Program Programmatic Environmental Impact Statement DOE Extends Public Comment Period for the Draft Uranium Leasing Program Programmatic Environmental Impact Statement June 3, 2013 - 3:05pm Addthis Contractor, Bob Darr, S.M. Stoller Corporation Public Affairs, (720) 377-9672, ULinfo@lm.doe.gov May 29, 2013 DOE Extends Public Comment Period for Uranium Program Environmental Impact Statement The U.S. Department of Energy (DOE) today announced that the public comment period for the Draft Uranium Leasing Program Programmatic Environmental Impact Statement (ULP PEIS) has been extended to July 1, 2013. Under the Uranium Leasing Program, DOE's Office of Legacy Management manages 31 tracts of land in Mesa, Montrose, and San Miguel counties in

310

What You Need to Know About the Extended Federal Tax Credits for Energy  

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

What You Need to Know About the Extended Federal Tax Credits for What You Need to Know About the Extended Federal Tax Credits for Energy Efficiency What You Need to Know About the Extended Federal Tax Credits for Energy Efficiency February 27, 2013 - 4:14pm Addthis You may qualify for tax credits for energy-efficient purchases. | Photo courtesy of ©iStockphoto.com/Tsuji You may qualify for tax credits for energy-efficient purchases. | Photo courtesy of ©iStockphoto.com/Tsuji Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy How can I participate? Check to see if energy-efficient products that you purchased in 2012 or plan to purchase in 2013 qualify for a 2012 tax credit. For federal and state-specific tax credits and rebates, check out our Savings page. There's good news for consumers this tax return season. As part of the

311

DOE Hydrogen and Fuel Cells Program: Deadline Extended for Early Market  

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

Deadline Extended for Early Market Hydrogen and Fuel Cell Funding Deadline Extended for Early Market Hydrogen and Fuel Cell Funding Opportunity Jun 26, 2013 DOE has extended the application deadline for the "Fuel Cell Hybrid Electric Medium Duty Trucks, Roof-top Backup Power, and Advanced Hydrogen Refueling Components" funding opportunity announcement. Applications are now due by 5:00 p.m. EDT on July 25, 2013. Letters of intent are due on July 12, 2013. In support of the Obama Administration's all-of-the-above energy strategy, on June 11 the Energy Department announced up to $9 million in new funding to accelerate the development of hydrogen and fuel cell technologies for use in vehicles, backup power systems, and hydrogen refueling components. These investments will strengthen U.S. leadership in cost-effective

312

EQ-SANS: the Extended Q-Range Small-Angle Neutron Scattering Diffractometer  

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

The Extended Q-Range Small-Angle Neutron Scattering Diffractometer at SNS The Extended Q-Range Small-Angle Neutron Scattering Diffractometer at SNS Extended Q-Range Small Angle Diffractometer EQ-SANS detector array The EQ-SANS Diffractometer is designed to study non-crystalline, nano-sized materials in solid, liquid, or gas forms such as polymers, micelles, proteins, and other large biological molecular complexes in solution. It offers high neutron flux, high wavelength resolution (precision), and wide Q-coverage. EQSANS is located on beam line 6, viewing the top-downstream, coupled supercritical hydrogen moderator. It has a curved multichannel beam bender to avoid the direct line of sight of the moderator, which cleans out the background from the prompt neutron pulse quite effectively. The cutoff wavelength of the optics is ~1.5 Å. Above this minimum wavelength, the

313

Search for relationship between duration of the extended solar cycles and amplitude of sunspot cycle  

E-Print Network (OSTI)

Duration of the extended solar cycles is taken into the consideration. The beginning of cycles is counted from the moment of polarity reversal of large-scale magnetic field in high latitudes, occurring in the sunspot cycle n till the minimum of the cycle n+2. The connection between cycle duration and its amplitude is established. Duration of the "latent" period of evolution of extended cycle between reversals and a minimum of the current sunspot cycle is entered. It is shown, that the latent period of cycles evolution is connected with the next sunspot cycle amplitude and can be used for the prognosis of a level and time of a sunspot maximum. The 24-th activity cycle prognosis is done. Long-term behavior of extended cycle's lengths is considered.

Tlatov, A G

2007-01-01T23:59:59.000Z

314

Search for relationship between duration of the extended solar cycles and amplitude of sunspot cycle  

E-Print Network (OSTI)

Duration of the extended solar cycles is taken into the consideration. The beginning of cycles is counted from the moment of polarity reversal of large-scale magnetic field in high latitudes, occurring in the sunspot cycle n till the minimum of the cycle n+2. The connection between cycle duration and its amplitude is established. Duration of the "latent" period of evolution of extended cycle between reversals and a minimum of the current sunspot cycle is entered. It is shown, that the latent period of cycles evolution is connected with the next sunspot cycle amplitude and can be used for the prognosis of a level and time of a sunspot maximum. The 24-th activity cycle prognosis is done. Long-term behavior of extended cycle's lengths is considered.

A. G. Tlatov

2007-03-27T23:59:59.000Z

315

Optimal Lyapunov quantum control on two-level systems: convergence and extended techniques  

E-Print Network (OSTI)

Taking a two-level system as an example, we show that a strong control field may enhance the efficiency of optimal Lyapunov quantum control in [Hou et al., Phys. Rev. A \\textbf{86}, 022321 (2012)] but could decrease its control fidelity. A relationship between the strength of the control field and the control fidelity is established. An extended technique, which combines free evolution and external control, is proposed to improve the control fidelity. We analytically demonstrate that the extended technique can be used to design a control law for steering a two-level system exactly to the target state. In such a way, the convergence of the extended optimal Lyapunov quantum control can be guaranteed.

L. C. Wang; S. C. Hou; X. X. Yi; Daoyi Dong; Ian R. Petersen

2013-06-04T23:59:59.000Z

316

Devices with extended area structures for mass transfer processing of fluids  

DOE Patents (OSTI)

A microchannel device includes several mass transfer microchannels to receive a fluid media for processing at least one heat transfer microchannel in fluid communication with a heat transfer fluid defined by a thermally conductive wall, and at several thermally conductive fins each connected to the wall and extending therefrom to separate the mass transfer microchannels from one another. In one form, the device may optionally include another heat transfer microchannel and corresponding wall that is positioned opposite the first wall and has the fins and the mass transfer microchannels extending therebetween.

TeGrotenhuis, Ward E. (Kennewick, WA); Wegeng, Robert S. (Richland, WA); Whyatt, Greg A. (West Richland, WA); King, David L. (Richland, WA); Brooks, Kriston P. (Kennewick, WA); Stenkamp, Victoria S. (Richland, WA)

2009-04-21T23:59:59.000Z

317

Chandra Observations of MRK 273: Unveiling the Central AGN and the Extended Hot Gas Halo  

E-Print Network (OSTI)

We report X-ray observations of the field containing the ultraluminous IRAS galaxy Mrk~273 Using the ACIS-S3 instrument on board Chandra. The high resolution X-ray image, for the first time, reveals a compact hard X-ray nucleus in Mrk~273. Its X-ray energy distribution is well described by a heavily obscured power-law spectrum plus a narrow $\\Feka$ emission line at 6.4 keV. The neutral hydrogen column density is about $4\\times10^{23}\\cm^{-2}$, implying an absorption -corrected X-ray luminosity (0.1--10 keV) for the nucleus of $\\Lx\\approx 6.5\\times 10^{43} \\ergs$. There are also bright soft X-ray clumps and diffuse soft X-ray emissions surrounding the central hard X-ray nucleus within the $10\\arcsec$ of the nuclear region. Its spectrum can be fitted by a MEKAL thermal model with temperature of about 0.8 keV and high metallicity ($Z\\sim 1.5Z_\\odot$) plus emission lines from $\\alpha$ elements and ions. Further outside the central region, the Chandra observations reveal a very extended hot gas halo with a projected diameter of about $108 \\kpc\\times 68 \\kpc$ and soft X-ray luminosity of $\\Lx\\approx 1.9\\times 10^{41} \\ergs$. The temperature of the hot gas is about 0.62 keV with a low metallicity ($Z \\sim 0.1 Z_\\odot$). We discuss the nature of the AGN in Mrk~273 and the implications of our results on the origin of X-ray halos in elliptical galaxies. We also discuss the properties of Mrk~273x, a background AGN in the Mrk~273 field. The AGN has an X-ray luminosity of $\\Lx \\approx 2.43\\times 10^{44}\\ergs$ in the 0.5-10 keV band. Its X-ray properties resemble those of Seyfert 1 galaxies while its optical properties are similar to Seyfert 2 galaxies. Such mixed classifications may be a challenge for the unification scheme of AGNs.

X. Y. Xia; S. J. Xue; S. Mao; Th. Boller; Z. G. Deng; H. Wu

2001-07-30T23:59:59.000Z

318

The Ocean–Land–Atmosphere Model (OLAM). Part I: Shallow-Water Tests  

Science Conference Proceedings (OSTI)

The Ocean–Land–Atmosphere Model (OLAM) has been developed to extend the capabilities of the Regional Atmospheric Modeling System (RAMS) to a global model domain. OLAM adopts many features of its predecessor, including physical parameterizations, ...

Robert L. Walko; Roni Avissar

2008-11-01T23:59:59.000Z

319

Development and Application of a Multipollutant Model for Atmospheric Mercury Deposition  

Science Conference Proceedings (OSTI)

A multipollutant model, the Community Multiscale Air Quality model paired with the Model of Aerosol Dynamics, Reaction, Ionization, and Dissolution (CMAQ-MADRID), is extended to include a comprehensive treatment of mercury processes and is ...

Krish Vijayaraghavan; Christian Seigneur; Prakash Karamchandani; Shu-Yun Chen

2007-09-01T23:59:59.000Z

320

International thermonuclear experimental reactor-like extended Solovev equilibria with parallel flow  

SciTech Connect

A Solovev-like equilibrium solution is extended to plasmas with incompressible flow parallel to the magnetic field. ITER-like configurations are constructed for Alfven Mach functions peaked either on or off the magnetic axis. The linear stability of the equilibrium is also examined by applying a sufficient condition.

Throumoulopoulos, G. N. [Section of Theoretical Physics, University of Ioannina, Association Euratom-Hellenic Republic, GR 451 10 Ioannina (Greece); Tasso, H. [Max-Planck-Institut fuer Plasmaphysik, Euratom Association, D-85748 Garching (Germany)

2012-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Extended Electrodynamics: II. Properties and invariant characteristics of the non-linear vacuum solutions  

E-Print Network (OSTI)

This paper aims to consider the general properties of the non-linear solutions to the vacuum equations of Extended Electrodynamics. The *-invariance and the conformal invariance of the equations are mentioned. It is also proved that all non-linear solutions have zero invariants: F_{\\mu\

S. Donev; M. Tashkova

1997-10-03T23:59:59.000Z

322

Extending the notion of quality from physical metrology to information and sustainability  

Science Conference Proceedings (OSTI)

In this paper we intend to demonstrate the need for extending the notion of quality from the physical domain to information and, more comprehensively, to sustainability. In physical metrology there are well established principles such as fundamental ... Keywords: Information quality, Metrology, Quality, Sustain ability

Gaurav Ameta; Sudarsan Rachuri; Xenia Fiorentini; Mahesh Mani; Steven J. Fenves; Kevin W. Lyons; Ram D. Sriram

2011-10-01T23:59:59.000Z

323

SAT(ID): satisfiability of propositional logic extended with inductive definitions  

Science Conference Proceedings (OSTI)

We investigate the satisfiability problem, SAT(ID), of an extension of propositional logic with inductive definitions. We demonstrate how to extend existing SAT solvers to become SAT(ID) solvers, and provide an implementation on top of MiniSat. We also ...

Maarten Mariën; Johan Wittocx; Marc Denecker; Maurice Bruynooghe

2008-05-01T23:59:59.000Z

324

Hdrug. A Flexible and Extendible Development Environment for Natural Language Processing.  

E-Print Network (OSTI)

. The package is written in Sic- stus Prolog and Tcl/Tk. The system pro- vides a graphical user interface of the functionality provided by Hdrug. The system is easily extendible because of the use of the Tcl/Tk scripting of non-experts. Hdrug is implemented in SICStus Prolog version 3, exploiting the built-in Tcl/Tk library

325

Equilibrium free energy estimates based on nonequilibrium work relations and extended dynamics  

E-Print Network (OSTI)

Equilibrium free energy estimates based on nonequilibrium work relations and extended dynamics the equilibrium free energy and the nonequilibrium work is useful for computer simulations. In this paper, we exploit the fact that the free energy is a state function, independent of the pathway taken to change

Sun, Sean

326

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems  

E-Print Network (OSTI)

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems Thierry Gallay the energy density e # 0 satisfies an evolution law of the form # t e = div x f -d, where -f is the energy flux and d # 0 the energy dissipation rate. We also suppose that |f | 2 # b(e)d for some nonnegative

Gallay, Thierry

327

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems  

E-Print Network (OSTI)

Distribution of Energy and Convergence to Equilibria in Extended Dissipative Systems Thierry Gallay partial differential equa- tions on unbounded spatial domains. We consider systems for which the energy density e 0 satisfies an evolution law of the form te = divxf - d, where -f is the energy flux and d 0

Gallay, Thierry

328

Stability Analysis of a New Extended L1 Controller with Experimental Validation on an Underwater Vehicle  

E-Print Network (OSTI)

Stability Analysis of a New Extended L1 Controller with Experimental Validation on an Underwater on an underwater vehicle subjected to a varying trajectory under several dis- turbances are then displayed. Moreover, experimental results are provided on an underwater vehicle in depth. The robot is expected

329

Extended abstracts. Volume 78-1. [Seattle, Wash. , May 21--26, 1978  

SciTech Connect

Extended abstracts (2 or 3 pages in length) are presented for 581 papers presented at this meeting. Sessions of the following divisions are included: Corrosion, Dielectrics and Insulation, Electronics, Electrothermics and Metallurgy, Energy Technology Group, Industrial Electrolytic, Organic and Biological Electrochemistry, and Physical Electrochemistry. (RWR)

1978-01-01T23:59:59.000Z

330

Comparison of extended Jones matrices for twisted nematic liquid-crystal  

E-Print Network (OSTI)

Engineering, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong Received April derived by using Yeh's formulation of the extended 2 2 Jones matrix and applied to twisted nematic liquid birefringent layers. We show that Yeh's version is a more accurate approximation to the full 4 4 matrix

331

Design and implementation of aggregation platform for extended ethernet transport and services  

Science Conference Proceedings (OSTI)

This paper describes an industry best practice of edge routing and switching platform development for extended high-speed Ethernet transport and services. This is the first system designed to provide integrated 10Gb/s LAN/WAN PHY and OTN G.709 digital ...

Shu Xiao; Chaoping Wu; Sathish Teganahalli; Shakeel Ahmed; Hao Tran; Rajashekhar Reddy

2009-11-01T23:59:59.000Z

332

An Extended Solar Cycle 23 with Deep Minimum Transition to Cycle 24: Assessments and Climatic Ramifications  

Science Conference Proceedings (OSTI)

The extended length of solar cycle 23 and the associated deep quiet period (QP) between cycles 23 and 24 have been examined using the international sunspot record from 1755 to 2010. This study has also introduced a QP definition based on a (...

Ernest M. Agee; Emily Cornett; Kandace Gleason

2010-11-01T23:59:59.000Z

333

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2012  

E-Print Network (OSTI)

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY increased our forecast slightly from early April, due to large amounts of uncertainty in both the phase and William M. Gray2 This forecast as well as past forecasts and verifications are available via the World

334

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2013  

E-Print Network (OSTI)

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY activity is predicted. (as of 10 April 2013) By Philip J. Klotzbach1 and William M. Gray2 This forecast as well as past forecasts and verifications are available via the World Wide Web at http://hurricane.atmos.colostate.edu/Forecasts

335

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2013  

E-Print Network (OSTI)

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY-average forecast, we are calling for an above-average probability of United States and Caribbean major hurricane landfall. (as of 3 June 2013) By Philip J. Klotzbach1 and William M. Gray2 This forecast as well as past

336

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2012  

E-Print Network (OSTI)

EXTENDED RANGE FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY activity is predicted. (as of 4 April 2012) By Philip J. Klotzbach1 and William M. Gray2 This forecast as well as past forecasts and verifications are available via the World Wide Web at http://hurricane.atmos.colostate.edu/Forecasts

337

SF STATE Extended Learning SF State ABA Approved Academic Certificate Program  

E-Print Network (OSTI)

SF STATE Extended Learning 2013/2014 SF State ABA Approved Academic Certificate Program PARALEGAL STUDIES www.cel.sfsu.edu/paralegal/ "The program holds you to top standards: if you can succeed in it, you will be well prepared for paralegal work anywhere. For instance, I found the assignments to be very realistic

338

Extending the operating system at the user level: the Ufo global file system  

Science Conference Proceedings (OSTI)

In this paper we show how to extend the functionality of standard operating systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the /proc file system provided ... Keywords: /proc file system, file caching, global file system, global name space, operating systems, user-level extensions

Albert D. Alexandrov; Maximilian Ibel; Klaus E. Schauser; Chris J. Scheiman

1997-01-01T23:59:59.000Z

339

Switching algorithms for extending battery life in Electric Vehicles Ron Adany a,*, Doron Aurbach b  

E-Print Network (OSTI)

of automobiles. The propulsion solutions for EVs are based on hybrid or fully battery powered electric vehiclesSwitching algorithms for extending battery life in Electric Vehicles Ron Adany a,*, Doron Aurbach b 27 December 2012 Keywords: Electric Vehicles (EV) Switching algorithms Battery life Lithium ion

Kraus, Sarit

340

What is the Issue? The Marcellus Shale is a geologic shale bed that extends across much  

E-Print Network (OSTI)

What is the Issue? The Marcellus Shale is a geologic shale bed that extends across much of the Marcellus Shale. Energy companies plan to nearly double the number of drilling rigs by the end of the year, this development illustrates the attractiveness of market proximity and the quality of Marcellus Shale gas

Wang, Z. Jane

Note: This page contains sample records for the topic "favar extended 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.


341

Wake II model for hydrodynamic forces on marine pipelines for the wave plus current case.  

E-Print Network (OSTI)

??The concept of the Wake II model for the determination of the hydrodynamic forces on marine pipelines is extended to include the wave plus current… (more)

Ramirez Sabag, Said

2012-01-01T23:59:59.000Z

342

Modeling Compressed Turbulence  

Science Conference Proceedings (OSTI)

From ICE to ICF, the effect of mean compression or expansion is important for predicting the state of the turbulence. When developing combustion models, we would like to know the mix state of the reacting species. This involves density and concentration fluctuations. To date, research has focused on the effect of compression on the turbulent kinetic energy. The current work provides constraints to help development and calibration for models of species mixing effects in compressed turbulence. The Cambon, et al., re-scaling has been extended to buoyancy driven turbulence, including the fluctuating density, concentration, and temperature equations. The new scalings give us helpful constraints for developing and validating RANS turbulence models.

Israel, Daniel M. [Los Alamos National Laboratory

2012-07-13T23:59:59.000Z

343

Computation of the spectrum of spatial Lyapunov exponents for the spatially extended beam-plasma systems and electron-wave devices  

E-Print Network (OSTI)

The spectrum of Lyapunov exponents is powerful tool for the analysis of the complex system dynamics. In the general framework of nonlinear dynamical systems a number of the numerical technics have been developed to obtain the spectrum of Lyapunov exponents for the complex temporal behavior of the systems with a few degree of freedom. Unfortunately, these methods can not apply directly to analysis of complex spatio-temporal dynamics in plasma devices which are characterized by the infinite phase space, since they are the spatially extended active media. In the present paper we propose the method for the calculation of the spectrum of the spatial Lyapunov exponents (SLEs) for the spatially extended beam-plasma systems. The calculation technique is applied to the analysis of chaotic spatio-temporal oscillations in three different beam-plasma model: (1) simple plasma Pierce diode, (2) coupled Pierce diodes, and (3) electron-wave system with backward electromagnetic wave. We find an excellent agreement between the system dynamics and the behavior of the spectrum of the spatial Lyapunov exponents. Along with the proposed method, the possible problems of SLEs calculation are also discussed. It is shown that for the wide class of the spatially extended systems the set of quantities included in the system state for SLEs calculation can be reduced using the appropriate feature of the plasma systems.

Alexander E. Hramov; Alexey A. Koronovskii; Vladimir A. Maximenko; Olga I. Moskalenko

2013-02-17T23:59:59.000Z

344

DOE Extends Deadline for Submission of Smart Grid RFI Reply Comments |  

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

Deadline for Submission of Smart Grid RFI Reply Deadline for Submission of Smart Grid RFI Reply Comments DOE Extends Deadline for Submission of Smart Grid RFI Reply Comments July 16, 2010 - 3:20pm Addthis Due to an unexpectedly large public response, the Department of Energy will extend by two weeks the deadline for submission of reply comments in response to its two Smart Grid RFIs. Originally set at July 26, the new deadline will be August 9, 2010. The Department's Smart Grid RFIs (both released in May 2010) were intended to inform the Department as it develops policies regarding the integration of broadband technologies with the Smart Grid. The first RFI solicited comments from electric utilities, consumer groups, and other stakeholders on ongoing federal, state, and private efforts to use or allow

345

DOE Extends Comment Period on Notice of Inquiry Under the Energy  

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

October 14, 2010 - 10:17am October 14, 2010 - 10:17am Addthis Today, in response to a formal request, General Counsel Scott Blake Harris approved a second and final extension of the public comment period to November 30, 2010 on DOE's Notice of Inquiry (75 FR 43945) soliciting comment on the development of regulations to carry out section 934 of the Energy Independence and Security Act of 2007, which implements the Convention on Supplementary Compensation for Nuclear Damage. The original deadline of September 27, 2010 was extended to October 27, 2010 (75 FR 51986) in response to public comment. The signed extension provided here will be published shortly in the Federal Register. Addthis Related Articles DOE Extends Comment Period on Notice of Inquiry Under the Energy Independence and Security Act

346

Effect of Extended Defects in Planar and Pixelated CdZnTe Detectors  

Science Conference Proceedings (OSTI)

We evaluated a spectroscopy-grade 15 x 15 x 7 mm{sup 3} CdZnTe (CZT) crystal with a high {mu}{tau}-product, > 10{sup -2} cm{sup 2}/V, but impaired by microscopic extended defects, such as walls of dislocations, low-angle and sub-grain boundaries, and Te inclusions. First, we evaluated a planar detector fabricated from this crystal using a Microscale X-ray Detector Mapping (MXDM) technique. Then, we fabricated from the same crystal a pixel detector to study local non-uniformities of the electric field. The measured X-ray response maps confirmed the presence of non-uniformities in the charge transport, and they showed that the global- and local-distortions of the internal E-field correlated to the extended defects and space-charge buildup on the side surfaces.

C Camarda; K Andreini; A Bolotnikov; Y Cui; A Hossain; R Gul; K Kim; L Marchini; L Xu; et al.

2011-12-31T23:59:59.000Z

347

Extending Efficiency Services to Underserved Households: NYSERDAs Assisted Home Performance with ENERGY STAR Program  

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

N April 4, 2012 Extending Efficiency Services to Underserved Households: NYSERDA's Assisted Home Performance with ENERGY STAR Program Since 2001, New York residents have completed over 39,000 energy upgrades through NYSERDA's Home Performance with ENERGY STAR (HPwES) initiative. Approximately one third of these projects have been completed through the Assisted HPwES track, which offers large incentives to middle income

348

DETERMINING THE NATURE OF THE EXTENDED H I STRUCTURE AROUND LITTLE THINGS DWARF GALAXY NGC 1569  

SciTech Connect

This work presents an extended, neutral hydrogen emission map around Magellanic-type dwarf irregular galaxy (dIm) NGC 1569. In the spring of 2010, the Robert C. Byrd Green Bank Telescope was used to map a 9 Degree-Sign Multiplication-Sign 2 Degree-Sign region in H I line emission that includes NGC 1569 and IC 342 as well as two other dwarf galaxies. The primary objective for these observations was to search for structures potentially connecting NGC 1569 with IC 342 group members in order to trace previous interactions and thus, provide an explanation for the starburst and peculiar kinematics prevalent in NGC 1569. A large, half-degree diameter H I cloud was detected that shares the same position and velocity as NGC 1569. Also, two long structures were discovered that are reminiscent of intergalactic filaments extending out in a V-shaped manner from NGC 1569 toward UGCA 92, a nearby dwarf galaxy. These filamentary structures extend for about 1. Degree-Sign 5, which is 77 kpc at NGC 1569. There is a continuous velocity succession with the 0. Degree-Sign 5 H I cloud, filaments, and main body of the galaxy. The 0. Degree-Sign 5 H I cloud and filamentary structures may be foreground Milky Way, but are suggestive as possible remnants of an interaction between NGC 1569 and UGCA 92. The data also show two tidal tails extending from UGCA 86 and IC 342, respectively. These structures may be part of a continuous H I bridge but more data are needed to determine if this is the case.

Johnson, Megan, E-mail: mjohnson@nrao.edu [Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001 (United States); National Radio Astronomy Observatory, P.O. Box 2, Green Bank, WV 24915 (United States)

2013-06-15T23:59:59.000Z

349

Interim Storage of Low and Intermediate Level Wastes: Guidelines for Extended Storage  

Science Conference Proceedings (OSTI)

Domestic utilities are responding to impending changes in low-level waste (LLW) disposal site facility availability by extending their capabilities for interim on-site storage of LLW. International utilities likewise face challenges in implementing complete low and intermediate waste disposal options. Therefore, our members asked EPRI to revise and update our series of documents devoted to on-site interim LLW storage. This report represents the key guidelines document for the series.

2002-10-30T23:59:59.000Z

350

A nonlinear relativistic approach to mathematical representation of vacuum electromagnetism based on extended Lie derivative  

E-Print Network (OSTI)

This paper presents an alternative {\\it relativistic nonlinear} approach to the vacuum case of classical electrodynamics. Our view is based on the understanding that the corresponding differential equations should be dynamical in nature. So, they must represent local energy-momentum balance relations. Formally, the new equations are in terms of appropriately extended Lie derivative of $\\mathbb{R}^2$-valued differential 2-form along a $\\mathbb{R}^2$-valued 2-vector on Minkowski space-time.

Stoil Donev; Maria Tashkova

2013-05-15T23:59:59.000Z

351

A nonlinear relativistic approach to mathematical representation of vacuum electromagnetism based on extended Lie derivative  

E-Print Network (OSTI)

This paper presents an alternative {\\it relativistic nonlinear} approach to the vacuum case of classical electrodynamics. Our view is based on the understanding that the corresponding differential equations should be dynamical in nature. So, they must represent local energy-momentum balance relations. Formally, the new equations are in terms of appropriately extended Lie derivative of $\\mathbb{R}^2$-valued differential 2-form along a $\\mathbb{R}^2$-valued 2-vector on Minkowski space-time.

Donev, Stoil

2013-01-01T23:59:59.000Z

352

Extending the boundaries of the usage of NMR chemical shifts in deciphering biomolecular structure and dynamics  

E-Print Network (OSTI)

Extending the Boundaries of the Usage of NMR Chemical Shifts in Deciphering Biomolecular Structure and Dynamics Aleksandr B. Sahakyan A thesis submitted for the degree of Doctor of Philosophy Department of Chemistry University of Cambridge Darwin 9... ? and ? dihedral angles. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 1.3 The gas-phase optimised structures of the selected representative conformations of Ace-Ala-Nme with the fixed ? and ? angles and the corresponding secondary...

Sahakyan, Aleksandr B.

2012-07-03T23:59:59.000Z

353

Water Velocity Measurement on an Extended-Length Submerged Bar Screen at John Day Dam  

DOE Green Energy (OSTI)

This report describes a study of water velocity around an extended-length submerged bar screen (ESBS) at John Day Dam. The study was conducted for the U.S. Army Corps of Engineers by AScI Corporation and MEVATEC Corporation in March of 2000. This report was prepared by Pacific Northwest National Laboratory. ESBS are being studied as one method for diverting juvenile migrating fish from the dam's turbine intakes into the gate well and through the juvenile fish bypass channels.

Weiland, Mark A

2001-04-02T23:59:59.000Z

354

Extended TOPSIS with Correlation Coefficient of Triangular Intuitionistic Fuzzy Sets for Multiple Attribute Group Decision Making  

Science Conference Proceedings (OSTI)

This paper extends the technique for order preference by similarity to ideal solution TOPSIS for solving multi-attribute group decision making MAGDM problems under triangular intuitionistic fuzzy sets by using its correlation coefficient. In situations ... Keywords: Correlation of Triangular Intuitionistic Fuzzy Number, Multi-Attribute Group Decision Making MAGDM, TOPSIS, Triangular Intuitionistic Fuzzy Hybrid Aggregation TIFHA Operator, Triangular Intuitionistic Fuzzy Ordered Weighted Averaging TIFOWA Operator

John Robinson P.; Henry AmirtharajE. C.

2011-07-01T23:59:59.000Z

355

Waste Containers for Extended Storage of Class A, B and C Wastes, Rev. 1  

Science Conference Proceedings (OSTI)

In response to the potential loss of low-level waste (LLW) disposal capacity for Class B and C Wastes in 2008, EPRI is updating its guidance documents on the interim storage of LLW wastes. This volume provides a comprehensive review of LLW containers and container technologies to help utilities evaluate their options and make selections for extended on-site storage. This revision updates the listings of commercially available containers, adds international containers, and provides minor technical changes...

2003-08-26T23:59:59.000Z

356

An extended segment pattern dictionary for pattern matching tracking algorithm at BESIII  

E-Print Network (OSTI)

A pattern matching based tracking algorithm, named MdcPatRec, is used for the reconstruction of charged tracks in the drift chamber of the BESIII detector. This paper addresses the shortage of segment finding in MdcPatRec algorithm. An extended segment construction scheme and the corresponding pattern dictionary are presented. Evaluation with Monte-Carlo and experimental data show that the new method can achieve higher efficiency for low transverse momentum tracks.

Changli Ma; Yao Zhang; Ye Yuan; Xiao-Rui LU; Yangheng Zheng; Kanglin He; Weidong Li; Huaiming Liu; Qiumei Ma; Linghui Wu

2013-05-04T23:59:59.000Z

357

Extended storage of low-level radioactive waste: potential problem areas  

DOE Green Energy (OSTI)

If a state or state compact does not have adequate disposal capacity for low-level radioactive waste (LLRW) by 1986 as required by the Low-Level Waste Policy Act, then extended storage of certain LLRW may be necessary. The issue of extended storage of LLRW is addressed in order to determine for the Nuclear Regulatory Commission the areas of concern and the actions recommended to resolve these concerns. The focus is on the properties and behavior of the waste form and waste container. Storage alternatives are considered in order to characterize the likely storage environments for these wastes. The areas of concern about extended storage of LLRW are grouped into two categories: 1. Behavior of the waste form and/or container during storage, e.g., radiolytic gas generation, radiation-enhanced degradation of polymeric materials, and corrosion. 2. Effects of extended storage on the properties of the waste form and/or container that are important after storage (e.g., radiation-induced oxidative embrittlement of high-density polyethylene and the weakening of steel containers resulting from corrosion by the waste). The additional information and actions required to address these concerns are discussed and, in particular, it is concluded that further information is needed on the rates of corrosion of container material by Class A wastes and on the apparent dose-rate dependence of radiolytic processes in Class B and C waste packages. Modifications to the guidance for solidified wastes and high-integrity containers in NRC's Technical Position on Waste Form are recommended. 27 references.

Siskind, B.; Dougherty, D.R.; MacKenzie, D.R.

1985-01-01T23:59:59.000Z

358

Extending quantum control of time-independent systems to time-dependent systems  

E-Print Network (OSTI)

We establish that if a scheme can control a time-independent system arbitrarily coupled to a generic finite bath over a short period of time $T$ with control precision $O(T^{N+1})$, it can also realize the control with the same order of precision on smoothly time-dependent systems. This result extends the validity of various universal dynamical control schemes to arbitrary analytically time-dependent systems.

Zhen-Yu Wang; Ren-Bao Liu

2011-01-27T23:59:59.000Z

359

Used Fuel and High-Level Radioactive Waste Extended Storage Collaboration Program  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) convened a workshop of over 40 representatives of the nuclear industry, federal government, national laboratories, and suppliers of used-fuel dry-storage systems to discuss the potential issues associated with extended dry storage of used fuel, that is, storage considerably beyond the term of current and recently proposed U.S. Nuclear Regulatory Commission (NRC) regulations. The workshop was held November 18-19, 2009, at EPRI's offices in Washington, DC.

2010-03-02T23:59:59.000Z

360

Question of the Week: How Do You Feel About the Extended Daylight Saving  

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

Feel About the Extended Daylight Feel About the Extended Daylight Saving Time? Question of the Week: How Do You Feel About the Extended Daylight Saving Time? March 12, 2009 - 6:00am Addthis Have you been drinking extra coffee this week? The spring switch to Daylight Saving Time can be rough-especially for those of us who aren't morning people-but that extra time in the afternoon sun sure is nice! The change took a few people by surprise-this is only the third year that Daylight Saving Time started the second Sunday in March, rather than the first Sunday in April. The Energy Policy Act of 2005 changed the start and end dates of Daylight Saving Time in order to save energy, and DOE has found that it worked. The savings from the shift, while small percentage-wise, are enough to power about 122,000 average U.S. homes for a year. See the article in EERE

Note: This page contains sample records for the topic "favar extended 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

NYSERDA's Green Jobs-Green New York Program: Extending Energy Efficiency  

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

NYSERDA's Green Jobs-Green New York Program: Extending Energy Efficiency NYSERDA's Green Jobs-Green New York Program: Extending Energy Efficiency Financing To Underserved Households Title NYSERDA's Green Jobs-Green New York Program: Extending Energy Efficiency Financing To Underserved Households Publication Type Policy Brief Authors Zimring, Mark, and Merrian C. Fuller Tertiary Authors Borgeson, Merrian Secondary Title Clean Energy Program Policy Brief Publisher LBNL Place Published Berkeley Year of Publication 2011 Pagination 7 Date Published 01/2011 Abstract The New York legislature passed the Green Jobs-Green New York (GJGNY) Act in 2009. Administered by the New York State Energy Research and Development Authority (NYSERDA), GJGNY programs provide New Yorkers with access to free or low-cost energy assessments, energy upgrade services, low-cost financing, and training for various "green-collar" careers. Launched in November 2010, GJGNY"s residential initiative is notable for its use of novel underwriting criteria to expand access to energy efficiency financing for households seeking to participate in New York"s Home Performance with Energy Star (HPwES) program. The GJGNY financing program is a valuable test of whether alternatives to credit scores can be used to responsibly expand credit opportunities for households that do not qualify for traditional lending products and, in doing so, enable more households to make energy efficiency upgrades.

362

Extended CO Solid: A New Class of High Energy Density Material  

DOE Green Energy (OSTI)

Covalently bonded extended phases of molecular solids made of first- and second-row elements at high pressures are a new class of materials with advanced optical, mechanical and energetic properties. The existence of such extended solids has recently been demonstrated using diamond anvil cells in several systems, including N{sub 2}, CO{sub 2},and CO. However, the microscopic quantities produced at the formidable high-pressure/temperature conditions have limited the characterization of their predicted novel properties including high-energy content. In this paper, we present the first experimental evidence that these extended low-Z solids are indeed high energy density materials via milligram-scale high-pressure synthesis, recovery and characterization of polymeric CO (p-CO). Our spectroscopic data reveal that p-CO is a random polymer made of lactonic entities and conjugated C=C with an energy content rivaling or exceeding that of HMX. Solid p-CO explosively decomposes to CO{sub 2} and glassy carbon and thus might be used as an advanced energetic material.

Lipp, M J; Evans, W J; Baer, B J; Yoo, C

2004-10-14T23:59:59.000Z

363

EXTENDED STAR FORMATION IN THE INTERMEDIATE-AGE LARGE MAGELLANIC CLOUD STAR CLUSTER NGC 2209  

SciTech Connect

We present observations of the 1 Gyr old star cluster NGC 2209 in the Large Magellanic Cloud made with the GMOS imager on the Gemini South Telescope. These observations show that the cluster exhibits a main-sequence turnoff that spans a broader range in luminosity than can be explained by a single-aged stellar population. This places NGC 2209 amongst a growing list of intermediate-age (1-3 Gyr) clusters that show evidence for extended or multiple epochs of star formation of between 50 and 460 Myr in extent. The extended main-sequence turnoff observed in NGC 2209 is a confirmation of the prediction in Keller et al. made on the basis of the cluster's large core radius. We propose that secondary star formation is a defining feature of the evolution of massive star clusters. Dissolution of lower mass clusters through evaporation results in only clusters that have experienced secondary star formation surviving for a Hubble time, thus providing a natural connection between the extended main-sequence turnoff phenomenon and the ubiquitous light-element abundance ranges seen in the ancient Galactic globular clusters.

Keller, Stefan C.; Mackey, A. Dougal; Da Costa, Gary S. [Research School of Astronomy and Astrophysics, Australian National University, Canberra (Australia)

2012-12-10T23:59:59.000Z

364

Extended Common Information Model (CIM) Standard for Planning Applications: CIM Interface, PC Upgrade, and Enhancements for Competit ive Electricity Markets  

Science Conference Proceedings (OSTI)

EPRI developed the DYNAMICS Unit Commitment program as a scheduling tool for the economic operation of electric utilities. DYNAMICS provides an optimized hourly generation schedule for a time horizon of up to five weeks. Resource performance characteristics guide scheduling decisions so that total operating costs are minimized while system energy and reserve demands are met. Additional constraints necessary for emissions compliance can also be incorporated into scheduling decisions. DYNAMICS can create a...

2000-12-04T23:59:59.000Z

365

Extending the Model of KH 15D: Estimating the Effects of Forward Scattering and Curvature of the Occulting Ring Edge  

E-Print Network (OSTI)

The periodic eclipses of the pre-main-sequence binary, KH 15D, have been explained by a circumbinary dust ring inclined to the orbital plane, which causes occultations of the stars as they pass behind the ring edge. We compute the extinction and forward scattering of light by the edge of the dust ring to explain (1) the gradual slope directly preceding total eclipse, (2) the gradual decline at the end of ingress, and (3) the slight rise in flux at mid-eclipse. The size of the forward scattering halo indicates that the dust grains have a radius of a ~ 6 (D/3 AU) microns, where D is the distance of the edge of the ring from the system barycenter. This dust size estimate agrees well with estimates of the dust grain size from polarimetry, adding to the evidence that the ring lies at several AU. Finally, the ratio of the fluxes inside and outside eclipse independently indicates that the ring lies at a few astronomical units.

D. W. Silvia; E. Agol

2008-03-31T23:59:59.000Z

366

draft41.pdf  

Gasoline and Diesel Fuel Update (EIA)

Market Market Luciana Juvenal y Federal Reserve Bank of St. Louis Ivan Petrella z Birkbeck, University of London 26 June 2012 Abstract The run-up in oil prices since 2004 coincided with growing investment in commod- ity markets and increased price comovement among di¤erent commodities. We assess whether speculation in the oil market played a role in driving this salient empirical pattern. We identify oil shocks from a large dataset using a factor-augmented vector autoregressive (FAVAR) model. This method is motivated by the fact that a small scale VAR is not infomationally su¢ cient to identify the shocks. The main results are as follows: (i) While global demand shocks account for the largest share of oil price ‡ uc- tuations, speculative shocks are the second most important driver. (ii) The comovement between oil prices and the prices of other commodities is mainly explained by global

367

Extended-burnup LWR (light-water reactor) fuel: The amount, characteristics, and potential effects on interim storage  

Science Conference Proceedings (OSTI)

The results of a study on extended-burnup, light-water reactor (LWR) spent fuel are described in this report. The study was performed by Pacific Northwest Laboratory for the US Department of Energy (DOE). The purpose of the study was to collect and evaluate information on the status of in-reactor performance and integrity of extended-burnup LWR fuel and initiate the investigation of the effects of extending fuel burnup on the subsequent handling, interim storage, and other operations (e.g., rod consolidation and shipping) associated with the back end of the fuel cycle. The results of this study will aid DOE and the nuclear industry in assessing the effects on waste management of extending the useful in-reactor life of nuclear fuel. The experience base with extended-burnup fuel is now substantial and projections for future use of extended-burnup fuel in domestic LWRs are positive. The basic performance and integrity of the fuel in the reactor has not been compromised by extending the burnup, and the potential limitations for further extending the burnup are not severe. 104 refs., 15 tabs.

Bailey, W.J.

1989-03-01T23:59:59.000Z

368

Modeling and prediction of nonlinear environmental system using Bayesian methods  

Science Conference Proceedings (OSTI)

An environmental dynamic system is usually modeled as a nonlinear system described by a set of nonlinear ODEs. A central challenge in computational modeling of environmental systems is the determination of the model parameters. In these cases, estimating ... Keywords: Extended Kalman filter, Leaf area index and soil moisture model, Nonlinear environmental system, Particle filter, State and parameter estimation, Variational filter

Majdi Mansouri; Benjamin Dumont; Marie-France Destain

2013-03-01T23:59:59.000Z

369

A DEEP SEARCH FOR EXTENDED RADIO CONTINUUM EMISSION FROM DWARF SPHEROIDAL GALAXIES: IMPLICATIONS FOR PARTICLE DARK MATTER  

Science Conference Proceedings (OSTI)

We present deep radio observations of four nearby dwarf spheroidal (dSph) galaxies, designed to detect extended synchrotron emission resulting from weakly interacting massive particle (WIMP) dark matter annihilations in their halos. Models by Colafrancesco et al. (CPU07) predict the existence of angularly large, smoothly distributed radio halos in such systems, which stem from electron and positron annihilation products spiraling in a turbulent magnetic field. We map a total of 40.5 deg{sup 2} around the Draco, Ursa Major II, Coma Berenices, and Willman 1 dSphs with the Green Bank Telescope (GBT) at 1.4 GHz to detect this annihilation signature, greatly reducing discrete-source confusion using the NVSS catalog. We achieve a sensitivity of {sigma}{sub sub} {approx}energies from the two-year Fermi Large Area Telescope data. We discuss three avenues for improving the constraints on ({sigma}v){sub {chi}} presented here, and conclude that deep radio observations of dSphs are highly complementary to indirect WIMP searches at higher energies.

Spekkens, Kristine [Department of Physics, Royal Military College of Canada, P.O. Box 17000, Station Forces, Kingston, Ontario K7K 7B4 (Canada); Mason, Brian S. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-2475 (United States); Aguirre, James E. [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Nhan, Bang, E-mail: kristine.spekkens@rmc.ca [Department of Astrophysical and Planetary Sciences, University of Colorado, 391 UCB, Boulder, CO 80309 (United States)

2013-08-10T23:59:59.000Z

370

Study of Oil Degradation in Extended Idle Operation Heavy Duty Vehicles  

E-Print Network (OSTI)

Advances in engine oil technology and increased combustion efficiency has resulted in the longer oil intervals in vehicles. Current oil change interval practice only takes into account the mileage a vehicle has driven and does not consider other vehicle operations that affect oil life like extended idle. Routine oil sampling is one way to ensure optimal oil intervals, but the price continuous analysis can be prohibitive. It is possible to use on board diagnostic (OBD) data to correlate oil degradation to engine usage in order to develop an algorithm that is applicable to many vehicles. While much research has been conducted for light duty vehicles, little has been completed for heavy duty vehicles, in particular vehicles that idle a majority of their time. This study uses multiple heavy duty vehicles that are monitored by monthly routine oil analysis and logging of on board diagnostic data to determine the effects extended idle has on the wear rate of oil. The vehicles were used in their normal operation; this resulted in an average idle run time of 60% of run time and no less than 50% in a single vehicle. At each sample the quality of the oil and the operation of the engines were assessed. The results of the oil analysis showed very little degradation of oil. As expected, a negative correlation was seen in viscosity and total base number (TBN) but not abnormal when compared to base oil. Significant degradation was not seen even after using the vehicle passed the manufacturer recommended oil intervals. Analysis of engine operation showed that the temperature of the oil was optimal for 85% of idle operation. In addition, oil pressures at idle were sufficiently higher than the minimum pressure recommended by the manufacturer, but was less than half of the average in use oil pressure. The combination of low pressure and optimal temperature has resulted in little oil degradation. The results from the study have shown that extended idling in the study vehicles can be treated similar to long trip interval service for oil degradation. Additionally, extended idling did not result in abnormal engine wear or excessive contamination.

Kader, Michael Kirk

2013-05-01T23:59:59.000Z

371

The nature of the extreme kinematics in the extended gas of high redshift radio galaxies  

E-Print Network (OSTI)

We present UV rest frame spectra of 3 powerful narrow line radio galaxies and the hyperluminous type 2 active galaxy SMM02399-0136, all at high redshift (z>2). We find high velocities (FWHM>1000, km/s) in the extended gas of all objects. A natural explanation is the interaction between the radio jet and the ambient gas, that drives shocks into the gas and accelerates the clouds. However, the existence of high velocities in regions where such interactions are not taking place implies that other processes can play a role. We discuss here several possible mechanisms.

M. Villar-Martin; L. Binette; R. A. E. Fosbury

1999-03-09T23:59:59.000Z

372

PREPARING THE HIGH FLUX ISOTOPE REACTOR FOR CONVERSION TO LOW ENRICHED URANIUM FUEL ? EXTENDING CYCLE BURNUP  

Science Conference Proceedings (OSTI)

Reactor performance studies have been completed for conceptual plate designs and show that maintaining reactor performance while converting HFIR from high enriched to low enriched uranium (20 wt % 235U) fuel requires extending the end-of-life burnup value for HFIR fuel from the current nominal value of 2200 MWD to 2600 MWD. The current fuel fabrication procedure is discussed and changes that would be required to this procedure are identified. Design and safety related analyses that are required for the certification of a new fuel are identified. Qualification tests and comments regarding the regulatory approval process are provided along with a conceptual schedule.

Primm, Trent [ORNL; Chandler, David [ORNL

2009-01-01T23:59:59.000Z

373

An odd-number limitation of extended time-delayed feedback control in autonomous systems  

E-Print Network (OSTI)

We propose a necessary condition for the successful stabilisation of a periodic orbit using the extended version of time-delayed feedback control. This condition depends on the number of real Floquet multipliers larger than unity and is therefore related to the well-known odd-number limitation in non-autonomous systems. We show that the period of the orbit which is induced by mismatching the delay-time of the control scheme and the period of the uncontrolled orbit plays an important role in the formulation of the odd-number limitation in the autonomous case.

Andreas Amann; Edward W. Hooton

2013-07-31T23:59:59.000Z

374

Serial model for attack tree computations  

Science Conference Proceedings (OSTI)

In this paper we extend the standard attack tree model by introducing temporal order to the attacker's decision making process. This will allow us to model the attacker's behaviour more accurately, since this way it is possible to study his actions related ...

Aivo Jürgenson; Jan Willemson

2009-12-01T23:59:59.000Z

375

Modeling Linear Kinematic Features in Sea Ice  

Science Conference Proceedings (OSTI)

Sea ice deformation is localized in narrow zones of high strain rate that extend hundreds of kilometers, for example, across the Arctic Basin. This paper demonstrates that these failure zones may be modeled with a viscous–plastic sea ice model, ...

Jennifer K. Hutchings; Petra Heil; William D. Hibler III

2005-12-01T23:59:59.000Z

376

Agegraphic Chaplygin gas model of dark energy  

E-Print Network (OSTI)

We establish a connection between the agegraphic models of dark energy and Chaplygin gas energy density in non-flat universe. We reconstruct the potential of the agegraphic scalar field as well as the dynamics of the scalar field according to the evolution of the agegraphic dark energy. We also extend our study to the interacting agegraphic generalized Chaplygin gas dark energy model.

Ahmad Sheykhi

2010-02-07T23:59:59.000Z

377

Vlasov fluid model with electron pressure  

SciTech Connect

The Vlasov-ion, fluid-electron model of Freidberg for studying the linear stability of hot-ion pinch configurations is here extended to include electron pressure. Within the framework of an adiabatic electron-gas picture, it is shown that this model is still amenable to the numerical methods described by Lewis and Freidberg. (auth)

Gerwin, R.

1975-11-01T23:59:59.000Z

378

Note: The Newsvendor Model with Endogenous Demand  

Science Conference Proceedings (OSTI)

This paper considers a firm's price and inventory policy when it faces uncertain demand that depends on both price and inventory level. The authors extend the classic newsvendor model by assuming that expected utility maximizing consumers choose between ... Keywords: Demand Uncertainty, Fill Rate Competition, Inventory, Newsvendor Model, Pricing, Service Levels, Service Rate Competition

James D. Dana; Nicholas C. Petruzzi

2001-11-01T23:59:59.000Z

379

A Numerical Model for the Equilibrium Shape of Electrified Raindrops  

Science Conference Proceedings (OSTI)

The model Beard Chuang, using the differential form of Laplace's formula, has been extended to raindrop shapes under the influence of vertical electric fields and drop charges. A finite volume method was used with a boundary-fitted coordinate ...

Catherine C. Chuang; Kenneth V. Beard

1990-06-01T23:59:59.000Z

380

The Diabatic Contour Advective Semi-Lagrangian Model  

Science Conference Proceedings (OSTI)

This article describes a novel algorithmic development extending the contour advective semi-Lagrangian model to include nonconservative effects. The Lagrangian contour representation of finescale tracer fields, such as potential vorticity, allows ...

David G. Dritschel; Maarten H. P. Ambaum

2006-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Periodic Solutions in Low-Dimensional Climatic Models  

Science Conference Proceedings (OSTI)

Classic climatic models use constitutive laws without any response time. A more realistic approach to the natural processes governing climate dynamics must introduce response time for heat and radiation fluxes. Extended irreversible ...

Toni Pujol; Josep Enric Llebot

1999-02-01T23:59:59.000Z

382

Representation of Velocity Gradient Effects in a Gaussian Puff Model  

Science Conference Proceedings (OSTI)

The Gaussian puff model framework is extended to provide a description of velocity shear distortion effects. An efficient splitting-merging algorithm is presented so that a maximum puff size can be specified for a calculation. This localizes the ...

R. I. Sykes; D. S. Henn

1995-12-01T23:59:59.000Z

383

Quasi Light Fields: A Model of Coherent Image Formation  

E-Print Network (OSTI)

We develop a model of coherent image formation that strikes a balance between the simplicity of the light field and the comprehensive predictive power of Maxwell's equations, by extending the light field to coherent radiation.

Accardi, Anthony J.

384

Accelerating the Convergence to Equilibrium of Ocean-Climate Models  

Science Conference Proceedings (OSTI)

Solutions corresponding to climatic equilibrium are usually obtained from atmospheric general circulation models by extended numerical integration with respect to time. Because the ocean contains a much wider range of time scales the same ...

Kirk Bryan

1984-04-01T23:59:59.000Z

385

The extended atmosphere and evolution of the RV Tau star R Scuti  

E-Print Network (OSTI)

We analyze ISO/SWS spectra of the RV Tau star R Scuti. The infrared spectra are dominated by H2O emission bands. The near- and mid-infrared excess is attributed to H2O; the dust contribution is less important. We also identify CO, SiO and CO2 bands. The various molecular emission bands originate from an extended atmosphere, an atmosphere above the photosphere. The extended atmosphere of R Sct is formed from matter which gradually have lifted up from the photosphere through the pulsations of the star. In contrast to the abundant molecules around the star, the silicate dust feature is weak and the dust mass-loss rate is only 10^{-11} solar mass per year. This implies that there might be a process to inhibit dust formation from molecules. RV Tau stars are commonly considered as post-AGB stars. While a detached dust envelope around R Sct is consistent with such an interpretation, we show that its period evolution is slower than expected. We argue that R Sct may be a thermal-pulsing AGB star, observed in a helium-burning phase.

M. Matsuura; I. Yamamura; A. A. Zijlstra; T. R. Bedding

2002-03-14T23:59:59.000Z

386

Rock bits equipped with extended nozzles lower drilling cost in the Middle East region  

Science Conference Proceedings (OSTI)

An analysis of three-cone rock bit runs using extended jet nozzles (EN) in the Middle East Region is presented. These runs were made from 1982 to 1984 in several Middle East countries. They represent wells drilled onshore and offshore, vertical and deviated, using oil and water based mud systems. The improvements in performance gained by enhanced hole cleaning with extended nozzles are well documented. This feature has been widely used in the South East Asia - Far East region and in certain areas of the continental U.S.A. and Alaska since the mid - 1970's. The result of the EN runs in the Middle East correlate well with results in the proven areas elsewhere in the world. Penetration rate increases over regular jet bits of 7-80% have been recorded. The high daily rig costs characteristic of Mideast drilling operations make it fairly easy to show a cost per foot decrease with only slight increases in performance. The increased bit cost due to the EN feature is found to be virtually negligible.

Selby, B.A.; Sauvageot, W.A.

1985-03-01T23:59:59.000Z

387

A Water Maser and Ammonia Survey of GLIMPSE Extended Green Objects (EGOs)  

E-Print Network (OSTI)

We present the results of a Nobeyama 45-m water maser and ammonia survey of all 94 northern GLIMPSE Extended Green Objects (EGOs), a sample of massive young stellar objects (MYSOs) identified based on their extended 4.5 micron emission. We observed the ammonia (1,1), (2,2), and (3,3) inversion lines, and detect emission towards 97%, 63%, and 46% of our sample, respectively (median rms ~50 mK). The water maser detection rate is 68% (median rms ~0.11 Jy). The derived water maser and clump-scale gas properties are consistent with the identification of EGOs as young MYSOs. To explore the degree of variation among EGOs, we analyze subsamples defined based on MIR properties or maser associations. Water masers and warm dense gas, as indicated by emission in the higher-excitation ammonia transitions, are most frequently detected towards EGOs also associated with both Class I and II methanol masers. 95% (81%) of such EGOs are detected in water (ammonia(3,3)), compared to only 33% (7%) of EGOs without either methanol m...

Cyganowski, C J; Rosolowsky, E; Towers, S; Meyer, J Donovan; Egusa, F; Momose, R; Robitaille, T P

2012-01-01T23:59:59.000Z

388

The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets  

E-Print Network (OSTI)

In this the first of a series of Letters, we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey, the All-wavelength Extended Groth strip International Survey (AEGIS), is intended to study the physical properties and evolutionary processes of galaxies at z ~ 1. It includes the following deep, wide-field imaging data sets: Chandra/ACIS X-ray (0.5 - 10 keV), GALEX ultraviolet (1200 - 2500 Angstrom), CFHT/MegaCam Legacy Survey optical (3600 - 9000 Angstroms), CFHT/CFH12K optical (4500 - 9000 Angstroms), Hubble Space Telescope/ACS optical (4400 - 8500 Angstroms), Palomar/WIRC near-infrared (1.2 - 2.2 microns), Spitzer/IRAC mid-infrared (3.6 - 8.0 microns), Spitzer/MIPS far-infrared (24 - 70 microns), and VLA radio continuum (6 - 20 cm). In addition, this region of the sky has been targeted for extensive spectroscopy using the DEIMOS spectrograph on the Keck II 10 m telescope. Our survey is compared to other large multiwavelength surveys in terms of depth and sky coverage.

M. Davis; P. Guhathakurta; N. Konidaris; J. A. Newman; M. L. N. Ashby; A. D. Biggs; P. Barmby; K. Bundy; S. Chapman; A. L. Coil; C. Conselice; M. Cooper; D. Croton; P. Eisenhardt; R. Ellis; S. Faber; T. Fang; G. G. Fazio; A. Georgakakis; B. Gerke; W. M. Goss; S. Gwyn; J. Harker; A. Hopkins; J. -S. Huang; R. J. Ivison; S. A. Kassin; E. Kirby; A. Koekemoer; D. C. Koo; E. Laird; E. Le Floc'h; L. Lin; J. Lotz; P. J. Marshall; D. C. Martin; A. Metevier; L. A. Moustakas; K. Nandra; K. Noeske; C. Papovich; A. C. Phillips; R. M. Rich; G. H. Rieke; D. Rigopoulou; S. Salim; D. Schiminovich; L. Simard; I. Smail; T. A. Small; B. Weiner; C. N. A. Willmer; S. P. Willner; G. Wilson; E. Wright; R. Yan

2006-07-15T23:59:59.000Z

389

The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets  

SciTech Connect

In this the first of a series of ''Letters'', we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey, the All-wavelength Extended Groth Strip International Survey (AEGIS), is intended to study the physical properties and evolutionary processes of galaxies at z {approx} 1. It includes the following deep, wide-field imaging data sets: Chandra/ACIS{sup 30} X-ray (0.5-10 keV), GALEX{sup 31} ultraviolet (1200-2500 A), CFHT/MegaCam Legacy Survey{sup 32} optical (3600-9000 {angstrom}), CFHT/CFH12K optical (4500-9000 {angstrom}), Hubble Space Telescope/ACS{sup 33} optical (4400-8500 {angstrom}), Palomar/WIRC{sup 34} near-infrared (1.2-2.2 {micro}m), Spitzer/IRAC{sup 35} mid-infrared (3.6-8.0 {micro}m), Spitzer/MIPS far-infrared (24-70 {micro}m), and VLA{sup 36} radio continuum (6-20 cm). In addition, this region of the sky has been targeted for extensive spectroscopy using the DEIMOS spectrograph on the Keck II 10 m telescope{sup 37}. Our survey is compared to other large multiwavelength surveys in terms of depth and sky coverage.

Davis, M.; Guhathakurta, P.; Konidaris, N.; Newman, J.A.; Ashby, M.L.N.; Biggs, A.D.; Barmby, P.; Bundy, K.; Chapman, S.; Coil, A.L.; Conselice, C.; Cooper, M.; Croton, D.; Eisenhardt, P.; Ellis, R.; Faber, S.; Fang, T.; Fazio, G.G.; Georgakakis, A.; Gerke, B.; Goss, W.M.; /UC, Berkeley, Astron. Dept. /Lick Observ. /LBL, Berkeley /Harvard-Smithsonian Ctr. Astrophys. /Royal Observ., Edinburgh /Caltech /Arizona U., Astron. Dept. - Steward Observ. /Nottingham U. /Caltech, JPL /Imperial Coll., London /UC, Berkeley /NRAO, Socorro /Victoria U. /Sydney U. /Baltimore, Space Telescope Sci. /Taiwan, Natl. Taiwan U. /NOAO, Tucson /KIPAC, Menlo Park /UCLA /Oxford U. /Columbia U., Astron. Astrophys.

2006-07-21T23:59:59.000Z

390

The All-Wavelength Extended Groth Strip International Survey(AEGIS) Data Sets  

Science Conference Proceedings (OSTI)

In this the first of a series of Letters, we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey, the All-wavelength Extended Groth Strip International Survey (AEGIS), is intended to study the physical properties and evolutionary processes of galaxies at z{approx}1. It includes the following deep, wide-field imaging data sets: Chandra/ACIS X-ray (0.5-10 keV), GALEX ultraviolet (1200-2500 Angstroms), CFHT/MegaCam Legacy Survey optical (3600-9000 Angstroms), CFHT/CFH12K optical (4500-9000 Angstroms), Hubble Space Telescope/ACS optical (4400-8500 Angstroms), Palomar/WIRC near-infrared (1.2-2.2 {micro}m), Spitzer/IRAC mid-infrared (3.6-8.0 {micro}m), Spitzer/MIPS far-infrared (24-70 {micro}m), and VLA radio continuum (6-20 cm). In addition, this region of the sky has been targeted for extensive spectroscopy using the DEIMOS spectrograph on the Keck II 10 m telescope. Our survey is compared to other large multiwavelength surveys in terms of depth and sky coverage.

Davis, M.; Guhathakurta, P.; Konidaris, N.P.; Newman, J.A.; Ashby, M.L.N.; Biggs, A.D.; Barmby, P.; Bundy, K.; Chapman, S.C.; Coil,A.L.; Conselice, C.J.; Cooper, M.C.; Croton, D.J.; Eisenhardt, P.R.M.; Ellis, R.S.; Faber, S.M.; Fang, T.; Fazio, G.G.; Georgakakis, A.; Gerke,B.F.; Goss, W.M.; Gwyn, S.; Harker, J.; Hopkins, A.M.; Huang, J.-S.; Ivison, R.J.; Kassin, S.A.; Kirby, E.N.; Koekemoer, A.M.; Koo, D.C.; Laird, E.S.; Le Floc'h, E.; Lin, L.; Lotz, J.M.; Marshall, P.J.; Martin,D.C.; Metevier, A.J.; Moustakas, L.A.; Nandra, K.; Noeske, K.G.; Papovich, C.; Phillips, A.C.; Rich,R. M.; Rieke, G.H.; Rigopoulou, D.; Salim, S.; Schiminovich, D.; Simard, L.; Smail, I.; Small,T.A.; Weiner,B.J.; Willmer, C.N.A.; Willner, S.P.; Wilson, G.; Wright, E.L.; Yan, R.

2006-10-13T23:59:59.000Z

391

Numerical Model Studies of the Winter-Storm Response of the West Florida Shelf  

Science Conference Proceedings (OSTI)

The wintertime, wind-driven Ocean circulation on the West Florida Continental Shelf is studied within the framework of a linearized storm-surge model. The model bathymetry incorporates a realistic shelf, extending from New Orleans to the southern ...

Ya Hsueh; G. O. Marmorino; Linda L. Vansant

1982-10-01T23:59:59.000Z

392

Time-Dependent Adjustment in a Simple Model of the Mid-Depth Meridional Overturning Cell  

Science Conference Proceedings (OSTI)

A recently proposed reduced-gravity model of the warm-water branch of the middepth meridional overturning circulation in a rectangular basin with a circumpolar connection is extended to include time dependence. The model describes the balance ...

R. M. Samelson

2011-05-01T23:59:59.000Z

393

Ontologies are us: a unified model of social networks and semantics  

Science Conference Proceedings (OSTI)

In our work we extend the traditional bipartite model of ontologies with the social dimension, leading to a tripartite model of actors, concepts and instances. We demonstrate the application of this representation by showing how community-based semantics ...

Peter Mika

2005-11-01T23:59:59.000Z

394

Modeling spatial variability of 137Cs surface activity in a mountain zone  

Science Conference Proceedings (OSTI)

Based on 137Cs surface activity field studies performed on a workshop zone, we succeeded in identifying the main criterion permitting surface activity modeling to be extended. Geomorphometric data derived from the Digital Elevation Model (slope, ...

J. M. Métivier; L. Pourcelot

2002-01-01T23:59:59.000Z

395

Implementation of an Urban Parameterization Scheme into the Regional Climate Model COSMO-CLM  

Science Conference Proceedings (OSTI)

As the nonhydrostatic regional model of the Consortium for Small-Scale Modelling in Climate Mode (COSMO-CLM) is increasingly employed for studying the effects of urbanization on the environment, the authors extend its surface-layer ...

Kristina Trusilova; Barbara Früh; Susanne Brienen; Andreas Walter; Valéry Masson; Grégoire Pigeon; Paul Becker

2013-10-01T23:59:59.000Z

396

Numerical Simulation of ANATEX Tracer Data Using a Turbulence Closure Model for Long-Range Dispersion  

Science Conference Proceedings (OSTI)

A long-range transport model based on turbulence closure concepts is described. The model extends the description of planetary boundary layer turbulent diffusion to the larger scales and uses statistical wind information to predict contaminant ...

R. I. Sykes; S. F. Parker; D. S. Henn; W. S. Lewellen

1993-05-01T23:59:59.000Z

397

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

398

An Inertial Model of the Interaction of Ekman Layers and Planetary Islands  

Science Conference Proceedings (OSTI)

An adiabatic, inertial, and quasigeostrophic model is used to discuss the interaction of surface Ekman transport with an island. The theory extends the recent work of Spall and Pedlosky to include an analytical and nonlinear model for the ...

Joseph Pedlosky

2013-07-01T23:59:59.000Z

399

The HybridTree: a hybrid constructive shape representation for free-form modeling  

Science Conference Proceedings (OSTI)

In this paper, we describe a hybrid modeling framework for creating complex 3D objects incrementally. Our system relies on an extended CSG tree that assembles skeletal implicit primitives, triangle meshes and point set models in a coherent fashion: we ...

Rémi Allègre; Eric Galin; Raphaëlle Chaine; Samir Akkouche

2008-01-01T23:59:59.000Z

400

Determination of Extratropical Tropopause Height in an Idealized Gray Radiation Model  

Science Conference Proceedings (OSTI)

This paper investigates the mechanisms that determine the extratropical tropopause height, extending previous results with a Newtonian cooling model. A primitive equation model forced by a meridional gradient of incoming solar radiation, with the ...

Pablo Zurita-Gotor; Geoffrey K. Vallis

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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

Variability in a Nonlinear Model of the Atmosphere with Zonally Symmetric Forcing  

Science Conference Proceedings (OSTI)

The variability in a two-level nonlinear atmospheric model is examined. The model domain is spherical. The sole forcing is a zonally symmetric parameterization of the December-February insulation. An extended 1500 day run is carefully analyzed.

Harry H. Hendon; Dennis L. Hartmann

1985-12-01T23:59:59.000Z

402

Potential Predictability and AMIP Implications of Midlatitude Climate Variability in Two General Circulation Models  

Science Conference Proceedings (OSTI)

Ensembles of extended Atmospheric Model Intercomparison Project (AMIP) runs from the general circulation models of the National Centers for Environmental Prediction (formerly the National Meteorological Center) and the Max-Planck Institute (...

T. P. Barnett; K. Arpe; L. Bengtsson; M. Ji; A. Kumar

1997-09-01T23:59:59.000Z

403

Extending the Lifetime of a Network ofExtending the Lifetime of a Network of BatteryBattery--Powered Mobile Devices byPowered Mobile Devices by  

E-Print Network (OSTI)

!! Generator matrixGenerator matrix ""Represents the state transition rateRepresents the state transition rate: represents the expectedthe expected packet error ratepacket error rate !! State transition: models theStateCost function components ""Power consumptionPower consumption ""Transition energyTransition energy Background

Pedram, Massoud

404

An extension of the relational data model to incorporate ordered domains  

Science Conference Proceedings (OSTI)

We extend the relational data model to incorporate partial orderings into data domains, which we call the ordered relational model. Within the extended model, we define the partially ordered relational algebra (the PORA) by allowing the ordering predicate ... Keywords: Axiom system, chase rules, implication problem, language expressiveness, lexicographical ordering, mixed ordering, nonuniform completeness, order-preserving database automorphism, ordered SQL, ordered functional dependencies, ordered relational model, ordered relations, partially ordered domains, partially ordered relational algebra, pointwise ordering, tableaux, valuation mapping

Wilfred Ng

2001-09-01T23:59:59.000Z

405

Discrete Scale Invariance and Other Cooperative Phenomena in Spatially Extended Systems With Threshold Dynamics  

E-Print Network (OSTI)

Contents 1 Introduction 5 1.1 Imitation and Synchronisation . . . . . . . . . . . . . . . . . . . . 6 1.2 Fractals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.3 Hierarchical systems . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.4 1=f-noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.5 Scale invariance and discrete scale invariance . . . . . . . . . . . . 11 1.6 Exactly solvable models with discrete scale invariance . . . . . . 14 1.6.1 Potts model on a hierarchical lattice . . . . . . . . . . . . 14 1.6.2 Diffusion on a random lattice . . . . . . . . . . . . . . . . 19 1.6.3 An experimental hierarchical model . . . . . . . . . . . . . 21 1.7 Possible log-periodic signatures in cracking 1 . . . . . . . . . . . . 22 2 Hierarchical structures in growth models 27 2.1 Laplacian growth models . . . . . . . . . . . . . . . . . . . . . . . 27 2.1.1 Numerical results . . .

Anders Johansen; Anders Johansen

1997-01-01T23:59:59.000Z

406

Extended Sawyer–Eliassen Equation for Frontal Circulations in the Presence of small Viscous Moist Symmetric Stability  

Science Conference Proceedings (OSTI)

The Sawyer–Eliassen (S–E) equation for frontal circulations forced by a geostrophic stretching deformation is extended to include the effects of both negative moist potential vorticity (MPV) and eddy viscosity. Since the moist (precipitation) ...

Qin Xu

1989-09-01T23:59:59.000Z

407

Charging Algorithm Extends the Life of Lead-acid Batteries: 2001 R and D 100 Award Recipient  

DOE Green Energy (OSTI)

Fact sheet describing NREL's work with Recombination Technologies and Optima Batteries to develop a current interrupt charging algorithm to extend the deep life cycle of valve-regulated lead-acid batteries.

Pesaran, A.

2001-09-27T23:59:59.000Z

408

Estimating the Wind Field from Chemical Constituent Observations: Experiments with a One-Dimensional Extended Kalman Filter  

Science Conference Proceedings (OSTI)

Modern data assimilation algorithms such as the four-dimensional variational algorithm or the extended Kalman filter (EKF) can, in theory, estimate the wind field from chemical constituent observations. This seems to be possible because of the ...

Roger Daley

1995-01-01T23:59:59.000Z

409

Interpretation of Extended Techniques in Unaccompanied flute Works by East-Asian Composers: Isang Yun, Toru Takemitsu, and Kazuo Fukushima.  

E-Print Network (OSTI)

??Extended flute techniques include many different ways of producing non-traditional sonorities and effects on the flute and have been an important compositional staple of Avant-garde… (more)

Jang, Seon Hee

2010-01-01T23:59:59.000Z

410

PSI-1402/ TR-1979 Extended Performance Handheld and Mobile Sensors for  

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

02/ 02/ TR-1979 Extended Performance Handheld and Mobile Sensors for Remote Detection of Natural Gas Leaks Phase II Final Report Reporting Period Start Date: 10/01/02 Reporting Period End Date: 12/31/04 Prepared by Michael B. Frish, B. David Green, Richard T. Wainner, Francesca Scire-Scappuzzo, Paul Cataldi, and Matthew C. Laderer May 2005 Under Cooperative Research Agreement DE-FC26-02NT41603 Between Physical Sciences Inc. and DoE NETL Physical Sciences Inc. 20 New England Business Center Andover, MA 01810-1077 Graham Midgley Heath Consultants, Inc. 9030 Monroe Road Houston, TX ACKNOWLEDGMENT STATEMENT: This Final Report was prepared with the support of the U.S. Department of Energy, under Award No. DE-FC26- 02NT41603. However, any opinions, findings, conclusions, or recommendations expressed herein are those of the

411

Extending synchrotron-based atomic physics experiments into the hard X-ray region  

Science Conference Proceedings (OSTI)

The high-brightness, hard x-ray beams available from third-generation synchrotron sources are opening new opportunities to study the deepest inner shells of atoms, an area where little work has been done and phenomena not observed in less tightly bound inner-shells are manifested. In addition scattering processes which are weak at lower energies become important, providing another tool to investigate atomic structure as well as an opportunity to study photon/atom interactions beyond photoabsorption. In this contribution the authors discuss some of the issues related to extending synchrotron-based atomic physics experiments into the hard x-ray region from the physical and the experimental point of view. They close with a discussion of a technique, resonant Raman scattering, that may prove invaluable in determining the spectra of the very highly-excited states resulting from the excitation of deep inner shells.

LeBrun, T. [Argonne National Lab., IL (United States). Physics Div.

1996-12-31T23:59:59.000Z

412

X-Ray Imaging Crystal Spectrometer for Extended X-Ray Sources  

DOE Patents (OSTI)

Spherically or toroidally curved, double focusing crystals are used in a spectrometer for X-ray diagnostics of an extended X-ray source such as a hot plasma produced in a tokamak fusion experiment to provide spatially and temporally resolved data on plasma parameters such as ion temperature, toroidal and poloidal rotation, electron temperature, impurity ion charge-state distributions, and impurity transport. The imaging properties of these spherically or toroidally curved crystals provide both spectrally and spatially resolved X-ray data from the plasma using only one small spherically or toroidally curved crystal, thus eliminating the requirement for a large array of crystal spectrometers and the need to cross-calibrate the various crystals.

Bitter, Manfred L.; Fraekel, Benjamin; Gorman, James L.; Hill, Kenneth W.; Roquemore, Lane A.; Stodiek, Wolfgang; Goeler, Schweickhard von

1999-05-01T23:59:59.000Z

413

Extended Lagrangian quantum molecular dynamics simulations of shock-induced chemistry in hydrocarbons  

SciTech Connect

A set of interatomic potentials for hydrocarbons that are based upon the self-consistent charge transfer tight-binding approximation to density functional theory have been developed and implemented into the quantum molecular dynamics code ''LATTE''. The interatomic potentials exhibit an outstanding level of transferability and have been applied in molecular dynamics simulations of tert-butylacetylene under thermodynamic conditions that correspond to its single-shock Hugoniot. We have achieved precise conservation of the total energy during microcanonical molecular dynamics trajectories under incomplete convergence via the extended Lagrangian Born-Oppenheimer molecular dynamics formalism. In good agreement with the results of a series of flyer-plate impact experiments, our SCC-TB molecular dynamics simulations show that tert-butylactylene molecules polymerize at shock pressures around 6.1 GPa.

Sanville, Edward J [Los Alamos National Laboratory; Bock, Nicolas [Los Alamos National Laboratory; Challacombe, William M [Los Alamos National Laboratory; Cawkwell, Marc J [Los Alamos National Laboratory; Niklasson, Anders M N [Los Alamos National Laboratory; Dattelbaum, Dana M [Los Alamos National Laboratory; Sheffield, Stephen [Los Alamos National Laboratory; Sewell, Thomas D [UNIV OF MISSOURI

2010-01-01T23:59:59.000Z

414

Extended Power Uprates and 2-yr Cycles for BWRs - Where Do We Go from Here?  

SciTech Connect

Boiling water reactors (BWRs) in the United States have transitioned over the past 30 yr from 7 x 7 and 8 x 8 fuels, 12-month cycles, and batch average burnups of 30 GWd/tonne U to 10 x 10 fuel, 18- to 24-month cycles, batch average burnups of 50 GWd/tonne U, and 5% power uprates in the 1990s. The next step for BWRs in the new millennium is 24-month cycles and extended power uprates as high as 120% power. These operating conditions lead to large reload fuel batch sizes (up to 45% of the core) that result in lower batch average discharge burnups ({approx}45 GWd/tonne U). Parameters driving the drop in fuel burnup include enrichment limitations and the need for fuel performance improvements. The next steps to achieve better BWR fuel cycle economics and their associated benefits and implementation challenges are discussed in this paper.

Brown, Craig; Hartley, Ken; Hulsman, Jim [Framatome ANP (France)

2005-08-15T23:59:59.000Z

415

Method using CO for extending the useful shelf-life of refrigerated red blood cells  

DOE Patents (OSTI)

Method using CO for extending the useful shelf-life of refrigerated red blood cells. Carbon monoxide is utilized for stabilizing hemoglobin in red blood cells to be stored at low temperature. Changes observed in the stored cells are similar to those found in normal red cell aging in the body, the extent thereof being directly related to the duration of refrigerated storage. Changes in cell buoyant density, vesiculation, and the tendency of stored cells to bind autologous IgG antibody directed against polymerized band 3 IgG, all of which are related to red blood cell senescence and increase with refrigerated storage time, have been substantially slowed when red blood cells are treated with CO. Removal of the carbon monoxide from the red blood cells is readily and efficiently accomplished by photolysis in the presence of oxygen so that the stored red blood cells may be safely transfused into a recipient.

Bitensky, Mark W. (Los Alamos, NM)

1995-01-01T23:59:59.000Z

416

Method using CO for extending the useful shelf-life of refrigerated red blood cells  

DOE Patents (OSTI)

A method is disclosed using CO for extending the useful shelf-life of refrigerated red blood cells. Carbon monoxide is utilized for stabilizing hemoglobin in red blood cells to be stored at low temperature. Changes observed in the stored cells are similar to those found in normal red cell aging in the body, the extent thereof being directly related to the duration of refrigerated storage. Changes in cell buoyant density, vesiculation, and the tendency of stored cells to bind autologous IgG antibody directed against polymerized band 3 IgG, all of which are related to red blood cell senescence and increase with refrigerated storage time, have been substantially slowed when red blood cells are treated with CO. Removal of the carbon monoxide from the red blood cells is readily and efficiently accomplished by photolysis in the presence of oxygen so that the stored red blood cells may be safely transfused into a recipient. 5 figs.

Bitensky, M.W.

1995-12-19T23:59:59.000Z

417

Cerenkov Line-like Radiation, The Extended and Improved Formulae System  

E-Print Network (OSTI)

You & Cheng (1980) argued that, for relativistic electrons moving through a dense gas, the Cerenkov effect will produce peculiar atomic and/or molecular emission lines--Cerenkov lines. They presented a series of formulae to describe the new line-mechanism. Elegant experimental confirmation has been obtained by Xu. et al. in the laboratory which definitely verified the existence of Cerenkov lines. Owing to the potential importance in high energy astrophysics, in this paper we give a more detailed physical discussion of the emission mechanisms and improve the previous formulae system into a form which is more convenient for astrophysical application. Specifically, the extended formulae in this paper can be applied to other species of atoms and/or ions rather than hydrogen as in the previous paper, and also to X-ray astronomy. They can also be used for the calculation of a nonuniform plane-parallel slab of the emissive gas.

J. H. You; Y. D. Xu; D. B. Liu; J. R. Shi; G. X. Jin

2000-09-07T23:59:59.000Z

418

Eighth workshop on crystalline silicon solar cell materials and processes: Extended abstracts and papers  

DOE Green Energy (OSTI)

The theme of this workshop is Supporting the Transition to World Class Manufacturing. This workshop provides a forum for an informal exchange of information between researchers in the photovoltaic and non-photovoltaic fields on various aspects of impurities and defects in silicon, their dynamics during device processing, and their application in defect engineering. This interaction helps establish a knowledge base that can be used for improving device fabrication processes to enhance solar-cell performance and reduce cell costs. It also provides an excellent opportunity for researchers from industry and universities to recognize mutual needs for future joint research. The workshop format features invited review presentations, panel discussions, and two poster sessions. The poster sessions create an opportunity for both university and industrial researchers to present their latest results and provide a natural forum for extended discussions and technical exchanges.

NONE

1998-08-01T23:59:59.000Z

419

Extending the Operating System at the User Level: the Ufo Global File System  

E-Print Network (OSTI)

In this paper we show how to extend the functionality of standard operating systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the /proc file system provided by many Unix operating systems. The behavior of some intercepted system calls is then modified to implement new functionality. This approach does not require any re-linking or recompilation of existing applications. In fact, the extensions can even be dynamically "installed" into already running processes. The extensions work completely at the user level and install without system administrator assistance. We used this approach to implement a global file system, called Ufo, which allows users to treat remote files exactly as if they were local. Currently, Ufo supports file access through the FTP and HTTP protocols and allows new protocols to be plugged in. While several other projects have implemented global file system abstractions, t...

Albert Alexandrov Maximilian; Ian E. Schauser; Chris J. Scheima; Albert D. Alex; Albert D. Alex; Maximilian Ibel; Maximilian Ibel; Klaus E. Schauser; Chris J. Scheiman

1997-01-01T23:59:59.000Z

420

Extending the Operating System at the User Level: the Ufo Global File System  

E-Print Network (OSTI)

In this paper we show how to extend the functionality of standard operating systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the /proc file system provided by many Unix operating systems. The behavior of some intercepted system calls is then modified to implement new functionality. This approach does not require any re-linking or recompilation of existing applications. In fact, the extensions can even be dynamically "installed" into already running processes. The extensions work completely at the user level and install without system administrator assistance. We used this approach to implement a global file system, called Ufo, which allows users to treat remote files exactly as if they were local. Currently, Ufo supports file access through the FTP and HTTP protocols and allows new protocols to be plugged in. While several other projects have implemented global file system abstractions, th...

Albert D. Alexandrov; Maximilian Ibel; Klaus E. Schauser; Chris J. Scheiman

1997-01-01T23:59:59.000Z

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421

A catalog of mid-infrared sources in the Extended Groth Strip  

E-Print Network (OSTI)

The Extended Groth Strip (EGS) is one of the premier fields for extragalactic deep surveys. Deep observations of the EGS with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope cover an area of 0.38 square degrees to a 50% completeness limit of 1.5 uJy at 3.6 um. The catalog comprises 57434 objects detected at 3.6 um, with 84%, 28%, and 24% also detected at 4.5, 5.8, and 8.0 um. Number counts are consistent with results from other Spitzer surveys. Color distributions show that the EGS IRAC sources comprise a mixture of populations: low-redshift star-forming galaxies, quiescent galaxies dominated by stellar emission at a range of redshifts, and high redshift galaxies and AGN.

P. Barmby; J. -S. Huang; M. L. N. Ashby; P. R. M. Eisenhardt; G. G. Fazio; E. L. Wright

2008-03-05T23:59:59.000Z

422

Properties of the extended Clifford group with applications to SIC-POVMs and MUBs  

E-Print Network (OSTI)

We consider a version of the extended Clifford Group which is defined in terms of a finite Galois field in odd prime power dimension. We show that Neuhauser's result, that with the appropriate choice of phases the standard (or metaplectic) representation of the discrete symplectic group is faithful also holds for the anti-unitary operators of the extended group. We also improve on Neuhauser's result by giving explicit formulae for the (anti-)unitary corresponding to an arbitrary (anti-)symplectic matrix. We then go on to find the eigenvalues and the order of an arbitrary (anti-)symplectic matrix. The fact that in prime power dimension the matrix elements belong to a field means that this can be done using the same techniques which are used to find the eigenvalues of a matrix defined over the reals-including the use of an extension field (the analogue of the complex numbers) when the eigenvalues are not in the base field. We then give an application of these results to SIC-POVMs (symmetric informationally complete positive operator valued measures). We show that in prime dimension our results can be used to find a natural basis for the eigenspace of the Zauner unitary in which SIC-fiducials are expected to lie. Finally, we apply our results to the MUB cycling problem. We show that in odd prime power dimension d, although there is no Clifford unitary, there is a Clifford anti-unitary which cycles through the full set of Wootters-Fields MUBs if d=3 (mod 4). Also, irrespective of whether d=1 or 3 (mod 4), the Wootters-Fields MUBs split into two groups of (d+1)/2 bases in such a way that there is a single Clifford unitary which cycles through each group separately.

D. M. Appleby

2009-09-28T23:59:59.000Z

423

ON THE POPULATIONS OF RADIO GALAXIES WITH EXTENDED MORPHOLOGY AT z < 0.3  

Science Conference Proceedings (OSTI)

Extended extragalactic radio sources have traditionally been classified into Fanaroff and Riley (FR) I and II types, based on the ratio r{sub s} of the separation S between the brightest regions on either sides of the host galaxy and the total size T of the radio source (r{sub s} {identical_to} S/T). In this paper, we examine the distribution of various physical properties as a function of r{sub s} of 1040 luminous (L {approx}> L{sub *}) extended radio galaxies (RGs) at z 0.8 and [O III] {lambda}5007 line luminosity >10{sup 6} L{sub sun} are markedly different on average from the rest of the RGs, in the sense that they are hosted in lower mass galaxies, live in relatively sparse environments, and likely have higher accretion rates onto the central supermassive black hole (SMBH). Thus, these high emission line luminosity, high-r{sub s} LD RGs, and the rest of RGs form a well-defined dichotomy. Motivated by the stark differences in the nuclear emission line properties of the RG subsamples, we suggest that the accretion rate onto the SMBH may play the primary role in creating the different morphologies. At relatively high accretion rates, the accretion system may produce powerful jets that create the 'classical double' morphology (roughly corresponding to the LD sources with r{sub s} {approx}> 0.8 and emission lines); at lower accretion rates, the jets from a radiatively inefficient accretion flow generate radio lobes without apparent 'hot spots' at the edge (corresponding to the majority of LD sources). At slightly lower accretion rates and in galaxies with dense galactic structure, sources with prominent jets result. It is possible that while the high accretion rate systems could affect sub-Mpc scale environments, the jets from lower accretion rate systems may efficiently suppress activity within the host galaxies.

Lin, Yen-Ting [Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa, Chiba (Japan); Shen Yue; Strauss, Michael A.; Lunnan, Ragnhild [Princeton University Observatory, Princeton, NJ 08544 (United States); Richards, Gordon T., E-mail: yen-ting.lin@ipmu.j [Department of Physics, Drexel University, Philadelphia, PA 19104 (United States)

2010-11-10T23:59:59.000Z

424

The GISS Global Climate-Middle Atmosphere Model. Part I: Model Structure and Climatology  

Science Conference Proceedings (OSTI)

The GISS global climate model (Hansen et al.) has been extended to include the middle atmosphere up to an altitude of approximately 85 km. The model has the full array of processes used for climate research, i.e., numerical solutions of the ...

D. Rind; R. Suozzo; N. K. Balachandran; A. Lacis; G. Russell

1988-02-01T23:59:59.000Z

425

Extend EnergyPlus to Support Evaluation, Design, and Operation of Low Energy Buildings  

SciTech Connect

During FY10-11, Pacific Northwest National Laboratory in collaboration with the EnergyPlus development team implemented the following high priority enhancements to support the simulation of high performance buildings: (1) Improve Autosizing of Heating, Ventilation, and Air Conditioning (HVAC) Components; (2) Life-Cycle Costing to Evaluate Energy Efficiency Upgrades; (3) Develop New Model to Capture Transformer Losses; (4) Enhance the Model for Electric Battery Storage; and (5) Develop New Model for Chiller-Tower Optimization. This report summarizes the technical background, new feature development and implementation details, and testing and validation process for these enhancements. The autosizing, life-cycle costing and transformer model enhancements/developments were included in EnergyPlus release Version 6.0, and the electric battery model development will be included in Version 7.0. The model development of chiller-tower optimization will be included in a later version (after Version 7.0).

Cho, Heejin; Wang, Weimin; Makhmalbaf, Atefe; Yun, Kyung Tae; Glazer, Jason; Scheier, Larry; Srivastava, Viraj; Gowri, Krishnan

2011-12-21T23:59:59.000Z

426

A Model to Predict the Probability of Precipitation  

Science Conference Proceedings (OSTI)

A model to predict the probability of a specific amount of accumulated precipitation at a point in an area of extended convective precipitation has been developed. The model has been used in conjunction with a large-scale numerical forecast model ...

Ulla Hammarstrand

1980-06-01T23:59:59.000Z

427

Detection of Device-Process Induced Extended Defects in 4H-SiC  

Science Conference Proceedings (OSTI)

Accelerated Light Induced Degradation, ALID, for Monitoring of Defects in PV Silicon ... Silicon Solar Cells Evaluated by LBIC and Equivalent Circuit Model.

428

A lattice Boltzmann model for electromagnetic waves propagating in a one-dimensional dispersive medium  

Science Conference Proceedings (OSTI)

A first-order extended lattice Boltzmann (LB) model with special forcing terms for one-dimensional Maxwell equations exerting on a dispersive medium, described either by the Debye or Drude model, is proposed in this study. The time dependent dispersive ... Keywords: Debye model, Dispersive medium, Drude model, Electromagnetic waves, Lattice Boltzmann method, Lorentz model

Poting Chen; Chen-Hao Wang; Jeng-Rong Ho

2013-03-01T23:59:59.000Z

429

Objective 1: Extend Life, Improve Performance, and Maintain Safety of the Current Fleet Implementation Plan  

Science Conference Proceedings (OSTI)

Nuclear power has reliably and economically contributed almost 20% of electrical generation in the United States over the past two decades. It remains the single largest contributor (more than 70%) of non-greenhouse-gas-emitting electric power generation in the United States. By the year 2030, domestic demand for electrical energy is expected to grow to levels of 16 to 36% higher than 2007 levels. At the same time, most currently operating nuclear power plants will begin reaching the end of their 60 year operating licenses. Figure E 1 shows projected nuclear energy contribution to the domestic generating capacity. If current operating nuclear power plants do not operate beyond 60 years, the total fraction of generated electrical energy from nuclear power will begin to decline—even with the expected addition of new nuclear generating capacity. The oldest commercial plants in the United States reached their 40th anniversary in 2009. The U.S. Department of Energy Office of Nuclear Energy’s Research and Development (R&D) Roadmap has organized its activities in accordance with four objectives that ensure nuclear energy remains a compelling and viable energy option for the United States. The objectives are as follows: (1) develop technologies and other solutions that can improve the reliability, sustain the safety, and extend the life of the current reactors; (2) develop improvements in the affordability of new reactors to enable nuclear energy to help meet the Administration’s energy security and climate change goals; (3) develop sustainable nuclear fuel cycles; and (4) understand and minimize risks of nuclear proliferation and terrorism. The Light Water Reactor Sustainability (LWRS) Program is the primary programmatic activity that addresses Objective 1. This document describes how Objective 1 and the LWRS Program will be implemented. The existing U.S. nuclear fleet has a remarkable safety and performance record and today accounts for 70% of the low greenhouse gas emitting domestic electricity production. Extending the operating lifetimes of current plants beyond 60 years and, where possible, making further improvements in their productivity will generate early benefits from research, development, and demonstration investments in nuclear power. DOE’s role in Objective 1 is to partner with industry and the Nuclear Regulatory Commission in appropriate ways to support and conduct the long-term research needed to inform major component refurbishment and replacement strategies, performance enhancements, plant license extensions, and age-related regulatory oversight decisions. The DOE research, development, and demonstration role will focus on aging phenomena and issues that require long-term research and are generic to reactor type. Cost-shared demonstration activities will be conducted when appropriate.

Robert Youngblood

2011-01-01T23:59:59.000Z

430

Objective 1: Extend Life, Improve Performance, and Maintain Safety of the Current Fleet Implementation Plan  

Science Conference Proceedings (OSTI)

Nuclear power has reliably and economically contributed almost 20% of electrical generation in the United States over the past two decades. It remains the single largest contributor (more than 70%) of non-greenhouse-gas-emitting electric power generation in the United States. By the year 2030, domestic demand for electrical energy is expected to grow to levels of 16 to 36% higher than 2007 levels. At the same time, most currently operating nuclear power plants will begin reaching the end of their 60 year operating licenses. Figure E 1 shows projected nuclear energy contribution to the domestic generating capacity. If current operating nuclear power plants do not operate beyond 60 years, the total fraction of generated electrical energy from nuclear power will begin to decline—even with the expected addition of new nuclear generating capacity. The oldest commercial plants in the United States reached their 40th anniversary in 2009. The U.S. Department of Energy Office of Nuclear Energy’s Research and Development (R&D) Roadmap has organized its activities in accordance with four objectives that ensure nuclear energy remains a compelling and viable energy option for the United States. The objectives are as follows: (1) develop technologies and other solutions that can improve the reliability, sustain the safety, and extend the life of the current reactors; (2) develop improvements in the affordability of new reactors to enable nuclear energy to help meet the Administration’s energy security and climate change goals; (3) develop sustainable nuclear fuel cycles; and (4) understand and minimize risks of nuclear proliferation and terrorism. The Light Water Reactor Sustainability (LWRS) Program is the primary programmatic activity that addresses Objective 1. This document describes how Objective 1 and the LWRS Program will be implemented. The existing U.S. nuclear fleet has a remarkable safety and performance record and today accounts for 70% of the low greenhouse gas emitting domestic electricity production. Extending the operating lifetimes of current plants beyond 60 years and, where possible, making further improvements in their productivity will generate early benefits from research, development, and demonstration investments in nuclear power. DOE’s role in Objective 1 is to partner with industry and the Nuclear Regulatory Commission in appropriate ways to support and conduct the long-term research needed to inform major component refurbishment and replacement strategies, performance enhancements, plant license extensions, and age-related regulatory oversight decisions. The DOE research, development, and demonstration role will focus on aging phenomena and issues that require long-term research and are generic to reactor type. Cost-shared demonstration activities will be conducted when appropriate.

Robert Youngblood

2011-02-01T23:59:59.000Z

431

A WATER MASER AND NH{sub 3} SURVEY OF GLIMPSE EXTENDED GREEN OBJECTS  

SciTech Connect

We present the results of a Nobeyama 45 m H{sub 2}O maser and NH{sub 3} survey of all 94 northern GLIMPSE extended green objects (EGOs), a sample of massive young stellar objects (MYSOs) identified based on their extended 4.5 {mu}m emission. We observed the NH{sub 3}(1,1), (2,2), and (3,3) inversion lines, and detected emission toward 97%, 63%, and 46% of our sample, respectively (median rms {approx} 50 mK). The H{sub 2}O maser detection rate is 68% (median rms {approx} 0.11 Jy). The derived H{sub 2}O maser and clump-scale gas properties are consistent with the identification of EGOs as young MYSOs. To explore the degree of variation among EGOs, we analyze subsamples defined based on mid-infrared (MIR) properties or maser associations. H{sub 2}O masers and warm dense gas, as indicated by emission in the higher-excitation NH{sub 3} transitions, are most frequently detected toward EGOs also associated with both Class I and II CH{sub 3}OH masers. Ninety-five percent (81%) of such EGOs are detected in H{sub 2}O (NH{sub 3}(3,3)), compared to only 33% (7%) of EGOs without either CH{sub 3}OH maser type. As populations, EGOs associated with Class I and/or II CH{sub 3}OH masers have significantly higher NH{sub 3} line widths, column densities, and kinetic temperatures than EGOs undetected in CH{sub 3}OH maser surveys. However, we find no evidence for statistically significant differences in H{sub 2}O maser properties (such as maser luminosity) among any EGO subsamples. Combining our data with the 1.1 mm continuum Bolocam Galactic Plane Survey, we find no correlation between isotropic H{sub 2}O maser luminosity and clump number density. H{sub 2}O maser luminosity is weakly correlated with clump (gas) temperature and clump mass.

Cyganowski, C. J. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)] [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Koda, J.; Towers, S.; Meyer, J. Donovan [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794 (United States)] [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794 (United States); Rosolowsky, E. [Department of Physics and Astronomy, University of British Columbia, Okanagan, Kelowna BC V1V 1V7 (Canada)] [Department of Physics and Astronomy, University of British Columbia, Okanagan, Kelowna BC V1V 1V7 (Canada); Egusa, F. [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan)] [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan); Momose, R. [Department of Astronomy, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)] [Department of Astronomy, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Robitaille, T. P., E-mail: ccyganowski@cfa.harvard.edu [Max Planck Institute for Astronomy, Heidelberg (Germany)

2013-02-10T23:59:59.000Z

432

Design, implementation and testing of extended and mixed precisionBLAS  

SciTech Connect

This article describes the design rationale, a C implementation, and conformance testing of a subset of the new Standard for the BLAS (Basic Linear Algebra Subroutines): Extended and Mixed Precision BLAS. Permitting higher internal precision and mixed input/output types and precisions allows us to implement some algorithms that are simpler, more accurate, and sometimes faster than possible without these features. The new BLAS are challenging to implement and test because there are many more subroutines than in the existing Standard, and because we must be able to assess whether a higher precision is used for internal computations than is used for either input or output variables. We have therefore developed an automated process of generating and systematically testing these routines. Our methodology is applicable to languages besides C. In particular, our algorithms used in the testing code will be valuable to all other BLAS implementors. Our extra precision routines achieve excellent performance--close to half of the machine peak Megaflop rate even for the Level 2 BLAS, when the data access is stride one.

Li, X.S.; Demmel, J.W.; Bailey, D.H.; Henry, G.; Hida, Y.; Iskandar, J.; Kahan, W.; Kapur, A.; Martin, M.C.; Tung, T.; Yoo, D.J.

2000-10-20T23:59:59.000Z

433

Extending a CAD-Based Cartesian Mesh Generator for the Lattice Boltzmann Method  

SciTech Connect

This paper describes the development of a custom preprocessor for the PaRAllel Thermal Hydraulics simulations using Advanced Mesoscopic methods (PRATHAM) code based on an open-source mesh generator, CartGen [1]. PRATHAM is a three-dimensional (3D) lattice Boltzmann method (LBM) based parallel flow simulation software currently under development at the Oak Ridge National Laboratory. The LBM algorithm in PRATHAM requires a uniform, coordinate system-aligned, non-body-fitted structured mesh for its computational domain. CartGen [1], which is a GNU-licensed open source code, already comes with some of the above needed functionalities. However, it needs to be further extended to fully support the LBM specific preprocessing requirements. Therefore, CartGen is being modified to (i) be compiler independent while converting a neutral-format STL (Stereolithography) CAD geometry to a uniform structured Cartesian mesh, (ii) provide a mechanism for PRATHAM to import the mesh and identify the fluid/solid domains, and (iii) provide a mechanism to visually identify and tag the domain boundaries on which to apply different boundary conditions.

Cantrell, J Nathan [ORNL; Inclan, Eric J [ORNL; Joshi, Abhijit S [ORNL; Popov, Emilian L [ORNL; Jain, Prashant K [ORNL

2012-01-01T23:59:59.000Z

434

On the Structure of the Nonlinear Vacuum Solutions in Extended Electrodynamics  

E-Print Network (OSTI)

In this paper, in the frame of Extended Electrodynamics (EED), we study some of the consequences that can be obtained from the introduced and used by Maxwell equations complex structure \\mathcal{J} in the space of 2-forms on \\mathbb{R}^4, and also used in EED. First we give the vacuum EED equations with some comments. Then we recall some facts about the invariance group $G$ (with Lie algebra \\mathcal{G}) of the standard complex structure $J$ in \\mathbb{R}^2. After defining and briefly studying a representation of $G$ in the space of 2-forms on \\mathbb{R}^4 and the joint action of $G$ in the space of \\mathcal{G}-valued 2-forms on \\mathbb{R}^4 we consider its connection with the vacuum solutions of EED. Finally we consider the case with point dependent group parameters and show that the set of the nonlinear vacuum EED solutions is a disjoint union of orbits of the $G$-action, noting some similarities with the quantim mechanical eigen picture and with the QFT creation and anihilation operators.

Donev, S; Donev, Stoil; Tashkova, Maria

2002-01-01T23:59:59.000Z

435

On the Structure of the Nonlinear Vacuum Solutions in Extended Electrodynamics  

E-Print Network (OSTI)

In this paper, in the frame of Extended Electrodynamics (EED), we study some of the consequences that can be obtained from the introduced and used by Maxwell equations complex structure \\mathcal{J} in the space of 2-forms on \\mathbb{R}^4, and also used in EED. First we give the vacuum EED equations with some comments. Then we recall some facts about the invariance group $G$ (with Lie algebra \\mathcal{G}) of the standard complex structure $J$ in \\mathbb{R}^2. After defining and briefly studying a representation of $G$ in the space of 2-forms on \\mathbb{R}^4 and the joint action of $G$ in the space of \\mathcal{G}-valued 2-forms on \\mathbb{R}^4 we consider its connection with the vacuum solutions of EED. Finally we consider the case with point dependent group parameters and show that the set of the nonlinear vacuum EED solutions is a disjoint union of orbits of the $G$-action, noting some similarities with the quantim mechanical eigen picture and with the QFT creation and anihilation operators.

Stoil Donev; Maria Tashkova

2002-04-25T23:59:59.000Z

436

The Thermal Regulation of Gravitational Instabilities in Protoplanetary Disks II. Extended Simulations with Varied Cooling Rates  

E-Print Network (OSTI)

In order to investigate mass transport and planet formation by gravitational instabilities (GIs), we have extended our 3-D hydrodynamic simulations of protoplanetary disks from a previous paper. Our goal is to determine the asymptotic behavior of GIs and how it is affected by different constant cooling times. Initially, Rdisk = 40 AU, Mdisk = 0.07 Mo, M* = 0.5 Mo, and Qmin = 1.8. Sustained cooling, with tcool = 2 orps (outer rotation periods, 1 orp ~ 250 yrs), drives the disk to instability in ~ 4 orps. This calculation is followed for 23.5 orps. After 12 orps, the disk settles into a quasi-steady state with sustained nonlinear instabilities, an average Q = 1.44 over the outer disk, a well-defined power-law Sigma(r), and a roughly steady Mdot ~ 5(-7) Mo/yr. The transport is driven by global low-order spiral modes. We restart the calculation at 11.2 orps with tcool = 1 and 1/4 orp. The latter case is also run at high azimuthal resolution. We find that shorter cooling times lead to increased Mdots, denser and t...

Mejia, A C; Pickett, M K; Cai, K; Mejia, Annie C.; Durisen, Richard H.; Pickett, Megan K.; Cai, Kai

2003-01-01T23:59:59.000Z

437

ATLAS Upgrades Towards the High Luminosity LHC: Extending the Discovery Potential  

E-Print Network (OSTI)

After successful LHC operation at the center-of-mass energy of 7 and 8 TeV in 2011 and 2012, plans are actively advancing for a series of upgrades, culminating roughly 10 years from now in the high luminosity LHC (HL-LHC) project, delivering of order five times the LHC nominal instantaneous luminosity along with luminosity levelling. The final goal is to extend the data set from about few hundred fb?1 expected for LHC running to 3000 fb?1 by around 2030. Current planning in ATLAS also has significant upgrades to the detector during the consolidation of the LHC to reach full LHC energy and further upgrades to accommodate running already beyond nominal luminosity this decade. The challenge of coping with HL-LHC instantaneous and integrated luminosity, along with the associated radiation levels, requires further major changes to the ATLAS detector. The designs are developing rapidly for an all-new inner-tracker, significant upgrades in the calorimeter and muon systems, as well as improved triggers and data a...

Vankov, P; The ATLAS collaboration

2013-01-01T23:59:59.000Z

438

ATLAS Upgrades Towards the High Luminosity LHC: extending the discovery potential  

E-Print Network (OSTI)

After successful LHC operation at the center-of-mass energy of 7 and 8 TeV in 2011 and 2012, plans are actively advancing for a series of upgrades, cul- minating roughly 10 years from now in the high luminosity LHC (HL-LHC) project, delivering of order five times the LHC nominal instantaneous lumi- nosity along with luminosity leveling. The final goal is to extend the data set from about few hundred fb?1 expected for LHC running to 3000 fb?1 by around 2030. Current planning in ATLAS also has significant upgrades to the detector during the consolidation of the LHC to reach full LHC energy and further upgrades to accommodate running already beyond nominal luminosity this decade. The challenge of coping with HL-LHC instantaneous and inte- grated luminosity, along with the associated radiation levels, requires further major changes to the ATLAS detector. The designs are developing rapidly for an all-new inner-tracker, significant upgrades in the calorimeter and muon systems, as well as improved triggers and d...

Valero, A; The ATLAS collaboration

2013-01-01T23:59:59.000Z

439

ATLAS Upgrades Towards the High Luminosity LHC: extending the discovery potential  

E-Print Network (OSTI)

After successful LHC operation at the center-of-mass energy of 7 and 8TeV in 2011 and 2012, plans are actively advancing for a series of upgrades, culminating roughly 10 years from now in the high luminosity LHC (HL-LHC) project, delivering of order five times the LHC nominal instantaneous luminosity along with luminosity leveling. The final goal is to extend the data set from about few hundred fb-1 expected for LHC running to 3000 fb-1 by around 2030. Current planning in ATLAS also has significant upgrades to the detector during the consolidation of the LHC to reach full LHC energy and further upgrades to accommodate running already beyond nominal luminosity this decade. The challenge of coping with HL-LHC instantaneous and integrated luminosity, along with the associated radiation levels, requires further major changes to the ATLAS detector. The designs are developing rapidly for an all-new inner-tracker, significant upgrades in the calorimeter and muon systems, as well as improved triggers and data acquisi...

Valero, A; The ATLAS collaboration

2013-01-01T23:59:59.000Z

440

Extending the redshift-distance relation in Cosmological General Relativity to higher redshifts  

E-Print Network (OSTI)

The redshift-distance modulus relation, the Hubble Diagram, derived from Cosmological General Relativity has been extended to arbitrarily large redshifts. Numerical methods were employed and a density function was found that results in a valid solution of the field equations at all redshifts. The extension has been compared to 302 type Ia supernova data as well as to 69 Gamma-ray burst data. The latter however do not not truly represent a `standard candle' as the derived distance modulii are not independent of the cosmology used. Nevertheless the analysis shows a good fit can be achieved without the need to assume the existence of dark matter. The Carmelian theory is also shown to describe a universe that is always spatially flat. This results from the underlying assumption of the energy density of a cosmological constant $\\Omega_{\\Lambda} = 1$, the result of vacuum energy. The curvature of the universe is described by a \\textit{spacevelocity} metric where the energy content of the curvature at any epoch is $\\Omega_K = \\Omega_{\\Lambda} - \\Omega = 1-\\Omega$, where $\\Omega$ is the matter density of the universe. Hence the total density is always $\\Omega_K + \\Omega = 1$

John G. Hartnett

2007-05-22T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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.


441

Central receiver solar thermal power system: collector subsystem extended life test. Final report  

SciTech Connect

To evaluate long term durability and stability of heliostat reflector and enclosure materials an extended life test program was performed on Research Experiment Heliostats by Boeing Engineering and Construction. The reflectors and enclosures were periodically evaluated and analyzed for the effects of dirt, sunlight, wind and thermal cycling on the mechanical and optical properties of Tedlar and changes in the Mylar reflector tension and reflectivity. During testing the heliostats were maintained and semi-annualy evaluated for optical and mechanical stability. The heliostats tested were located at the Boeing Boardman, Oregon test facility. The purpose of the program was to obtain data through measurements and observation to aid in heliostat design improvement. Certain weather and time related information, most reliably acquired by real time exposure testing, was sought through performance of mechanical and optical testing of the Boardman heliostats. The key areas of technical concern were: (1) enclosure and reflector optical property retention; (2) enclosure and reflector mechanical property retention; and (3) reflector creep (or loss in membrane tension) using bonded joints. In-place optical measurements as well as laboratory optical measurements on coupons cut from a heliostat, mechanical measurements from heliostat coupons, reflector sag measurements, and observations of the air supply system pressure stability and filter condition were made during the initial and two semi-annual test samplings. Results are summarized and discussed. (WHK)

1979-05-18T23:59:59.000Z

442

Online Condition Monitoring to Enable Extended Operation of Nuclear Power Plants  

SciTech Connect

Safe, secure, and economic operation of nuclear power plants will remain of strategic significance. New and improved monitoring will likely have increased significance in the post-Fukushima world. Prior to Fukushima, many activities were already underway globally to facilitate operation of nuclear power plants beyond their initial licensing periods. Decisions to shut down a nuclear power plant are mostly driven by economic considerations. Online condition monitoring is a means to improve both the safety and economics of extending the operating lifetimes of nuclear power plants, enabling adoption of proactive aging management. With regard to active components (e.g., pumps, valves, motors, etc.), significant experience in other industries has been leveraged to build the science base to support adoption for online condition-based maintenance and proactive aging management in the nuclear industry. Many of the research needs are associated with enabling proactive management of aging in passive components (e.g., pipes, vessels, cables, containment structures, etc.). This paper provides an overview of online condition monitoring for the nuclear power industry with an emphasis on passive components. Following the overview, several technology/knowledge gaps are identified, which require addressing to facilitate widespread online condition monitoring of passive components.

Meyer, Ryan M.; Bond, Leonard J.; Ramuhalli, Pradeep

2012-03-31T23:59:59.000Z

443

Discovery of an HI Counterpart to the Extended Tail of Mira  

E-Print Network (OSTI)

We report the detection of an HI counterpart to the extended, far-ultraviolet-emitting tail associated with the asymptotic giant branch star Mira (o Ceti). Using the Nancay Radio Telescope (NRT), we have detected emission as far as 88' north of the star, confirming that the tail contains a significant atomic component (M_HI ~ 4x10e-3 M_sun). The NRT spectra reveal a deceleration of the tail gas caused by interaction with the local interstellar medium. We estimate an age for the tail of ~1.2x10e5 years, suggesting that the mass-loss history of Mira has been more prolonged than previous observational estimates. Using the Very Large Array (VLA) we have also imaged the HI tail out to ~12' (0.4 pc) from the star. The detected emission shows a ``head-tail'' morphology, but with complex substructure. Regions with detected HI emission correlate with far-ultraviolet-luminous regions on large scales, but the two tracers are not closely correlated on smaller scales (<1'). We propose that detectable tails of HI are li...

Matthews, L D; Gerard, E; Bertre, T Le; Reid, M J

2008-01-01T23:59:59.000Z

444

Discovery of an HI Counterpart to the Extended Tail of Mira  

E-Print Network (OSTI)

We report the detection of an HI counterpart to the extended, far-ultraviolet-emitting tail associated with the asymptotic giant branch star Mira (o Ceti). Using the Nancay Radio Telescope (NRT), we have detected emission as far as 88' north of the star, confirming that the tail contains a significant atomic component (M_HI ~ 4x10e-3 M_sun). The NRT spectra reveal a deceleration of the tail gas caused by interaction with the local interstellar medium. We estimate an age for the tail of ~1.2x10e5 years, suggesting that the mass-loss history of Mira has been more prolonged than previous observational estimates. Using the Very Large Array (VLA) we have also imaged the HI tail out to ~12' (0.4 pc) from the star. The detected emission shows a ``head-tail'' morphology, but with complex substructure. Regions with detected HI emission correlate with far-ultraviolet-luminous regions on large scales, but the two tracers are not closely correlated on smaller scales (<1'). We propose that detectable tails of HI are likely to be a common feature of red giants undergoing mass-loss.

L. D. Matthews; Y. Libert; E. Gerard; T. Le Bertre; M. J. Reid

2008-05-12T23:59:59.000Z

445

Improvement and Implementation of a Parameterization for Shallow Cumulus in the Global Climate Model ECHAM5-HAM  

Science Conference Proceedings (OSTI)

A transient shallow-convection scheme is implemented into the general circulation model ECHAM5 and the coupled aerosol model HAM, developed at the Max Planck Institute for Meteorology in Hamburg. The shallow-convection scheme is extended to take ...

Francesco A. Isotta; P. Spichtinger; U. Lohmann; K. von Salzen

2011-03-01T23:59:59.000Z

446

A Semigeostrophic Eady-Wave Frontal Model Incorporating Momentum Diffusion. Part II: Kinetic Energy and Enstrophy Dissipation  

Science Conference Proceedings (OSTI)

Momentum diffusion has been introduced into a semigeostrophic Eady-wave frontal model by Blumen (Part I). This model is used to determine the kinetic energy and enstrophy dissipations within a frontal zone that extends from the ground to a ...

William Blumen

1990-12-01T23:59:59.000Z

447

Predictability of Linear Coupled Systems. Part II: An Application to a Simple Model of Tropical Atlantic Variability  

Science Conference Proceedings (OSTI)

A predictability analysis developed within a general framework of linear stochastic dynamics in a companion paper is applied to a simple coupled climate model of tropical Atlantic variability (TAV). The simple model extends the univariate ...

Ping Chang; R. Saravanan; Faming Wang; Link Ji

2004-04-01T23:59:59.000Z

448

Extending the Antarctic Meteorological Record Using Ice-Sheet Temperature Profiles  

Science Conference Proceedings (OSTI)

Two vertical ice temperature profiles from locations in the Antarctic Peninsula unaffected by meltwater are presented. A simple time-dependent heat diffusion-advection model is used to infer broad surface temperature variations in the Antarctic ...

K. W. Nicholls; J. G. Paren

1993-01-01T23:59:59.000Z

449

Extending JML for modular specification and verification of multi-threaded programs  

Science Conference Proceedings (OSTI)

The Java Modeling Language (JML) is a formal specification language for Java that allows developers to specify rich software contracts for interfaces and classes, using pre- and postconditions and invariants. Although JML has been widely studied and ...

Edwin Rodríguez; Matthew Dwyer; Cormac Flanagan; John Hatcliff; Gary T. Leavens; Robby

2005-07-01T23:59:59.000Z

450

Extending the Virtual Trackball Metaphor to Rear Touch Input Deutsche Telekom Laboratories, TU Berlin  

E-Print Network (OSTI)

and 3D model inspection. The hardware capabilities of mobile devices for rendering 3D content-based touch interaction. This problem has been named the "fat finger problem" [1]. Sev- eral solutions have

451

Dynamical Extended-Range Prediction of Early Monsoon Rainfall over India  

Science Conference Proceedings (OSTI)

The 15-member ensembles of 46-day dynamical forecasts starting on each 15 May from 1991 to 2007 have been produced, using the ECMWF Variable Resolution Ensemble Prediction System monthly forecasting system (VarEPS-monthy). The dynamical model ...

Frédéric Vitart; Franco Molteni

2009-04-01T23:59:59.000Z

452

Qualitative knowledge construction for engineering systems : extending the design structure matrix methodology in scope and procedure  

E-Print Network (OSTI)

This thesis presents a new modeling framework and research methodology for the study of engineering systems. The thesis begins with a formal conceptualization of Engineering Systems based upon a synthesis of various ...

Bartolomei, Jason E

2007-01-01T23:59:59.000Z

453

Multi-hop routing is order-optimal in underwater extended networks  

E-Print Network (OSTI)

Capacity scaling laws are analyzed in an underwater acoustic network with n regularly located nodes. A narrow-band model is assumed where the carrier frequency is allowed to scale as a function of n. In the network, we ...

Shin, Won-Yong

454

Extending the Limits of Ensemble Forecast Verification with the Minimum Spanning Tree  

Science Conference Proceedings (OSTI)

Uncertainty in the initial condition is one of the factors that limits the utility of single-model-run predictions of even deterministic nonlinear systems. In practice, an ensemble of initial conditions is often used to generate forecasts with ...

Leonard A. Smith; James A. Hansen

2004-06-01T23:59:59.000Z

455

The Impact of El Niño on an Ensemble of Extended-Range Forecasts  

Science Conference Proceedings (OSTI)

Two ensembles of 90-day forecasts for 1982–83 have been made with the UK Meteorological Office 11-layer atmospheric general circulation model. Each ensemble comprised three integrations initialized one day apart, using analyses from December ...

J. A. Owen; T. N. Palmer

1987-09-01T23:59:59.000Z

456

Piecewise linear car-following modeling  

E-Print Network (OSTI)

We present a traffic model which extends the linear car-following model as well as the min-plus traffic model (a model based on the min-plus algebra). A discrete-time car-dynamics describing the traffic on a 1-lane road without passing is interpreted as a dynamic programming equation of a stochastic optimal control problem of a Markov chain. This variational formulation permits to characterize the stability of the car-dynamics and to calculte the stationary regimes when they exist. The model is based on a piecewise linear approximation of the fundamental traffic diagram.

Farhi, Nadir

2011-01-01T23:59:59.000Z

457

Prioritization and Implementation Plan for Collaborative Case Study on RPV Steels During Extended Service  

Science Conference Proceedings (OSTI)

Nuclear power currently provides a significant fraction of the United States non-carbon emitting power generation. In future years, nuclear power must continue to generate a significant portion of the nation's electricity to meet the growing electricity demand, clean energy goals, and ensure energy independence. New reactors will be an essential part of the expansion of nuclear power. However, given limits on new builds imposed by economics and industrial capacity, the extended service of the existing fleet will also be required. Ensuring public safety and environmental protection is a prerequisite to all nuclear power plant operating and licensing decisions at all stages of reactor life. This includes the original license period of 40 years, the first license extension to 60 years, and certainly for any consideration of life beyond 60 years. For extended operating periods, it must be shown that adequate aging management programs are present or planned and that appropriate safety margins exist throughout the subsequent license renewal periods. Materials degradation can impact reactor reliability, availability, and potentially, safe operation. Components within a reactor must tolerate the harsh environment of high temperature water, stress, vibration, and/or an intense neutron field. Degradation of materials in this environment can lead to reduced performance, and in some cases, sudden failure. Clearly, understanding materials degradation and accounting for the effects of a reactor environment in operating and regulatory limits is essential. The Light Water Reactor Sustainability (LWRS) Program is designed to support the long-term operation (LTO) of existing domestic nuclear power generation with targeted collaborative research programs into areas beyond current short-term optimization opportunities. Within the LWRS program, two pathways have been initiated to perform research essential to informing relicensing decisions. The Materials Aging and Degradation Pathway is designed to help develop the scientific basis for understanding and predicting long-term environmental degradation behavior of materials in nuclear power plants and to provide data and methods to assess performance of systems, structures, and components essential to safe and sustained operation. The Risk-Informed Safety Margins Characterization Pathway (RISMC) seeks to merge fundamental scientific understanding of critical phenomenological conditions and deterministic predictions of nuclear power plant performance with risk-informed characterization tools. This will provide an integrated characterization of public safety margins in an optimization of nuclear safety, plant performance, and long-term asset management. Clearly, these two pathways have many synergies in goals and outcomes. The data and mechanisms generated in the Materials Pathway may feed into and mold efforts within the RISMC Pathway. In addition, insights from the characterization tools developed in RISMC tasks may inform materials testing needs and experiments. To demonstrate this potentially powerful interaction, a joint case study has been proposed and initiated. This document describes the initial planning for a coordinated study between the Materials and the RISMC Pathways. A brief description of each Pathway is presented along with a more detailed description of the needs and requirements of this collaborative task. A list of criteria for any case-study candidate are then listed, along with the rationale for choosing pressurized thermal shock as the prime candidate an inter-pathway collaboration. A proposed timeline and organization of future interactions on this subject area is also presented.

Busby, Jeremy T [ORNL; Nanstad, Randy K [ORNL

2010-02-01T23:59:59.000Z

458

Use of Irrigation to Extend the Seeding Window for Final Reclamation at Yucca Mountain, Nevada  

SciTech Connect

The U.S. Department of Energy has implemented a program to investigate the feasibility of various techniques for reclaiming lands disturbed during site characterization at Yucca Mountain. As part of this program, two studies were conducted in 1997 to assess the effects of combinations of seeding date (date that seeds are planted) and supplemental irrigation on densities of native plant species at Yucca Mountain. Study objectives were to (1) determine whether the traditional seeding window (October-December) could be extended through combinations of seeding date and irrigation date, (2) determine which combination of seeding date and irrigation was most successful, and (3) assess the effects of irrigation versus natural precipitation on seedling establishment. In the first study, a multi-species seed mix of 16 native species was sown into plots on four dates (12/96, 2/97, 3/97, and 4/97). Irrigation treatments were control (no irrigation) or addition of 80 mm of supplemental water applied over a one month period. Plant densities were sampled in August and again in October, 1997. In the second study, Larrea tridentata and Lycium andersonii, two species that are common at Yucca Mountain, but difficult to establish from seed, were sown together into plots in January and August, 1997. Half the plots were irrigated with approximately 250 mm of water between August 18 and September 11, while the remaining plots received no irrigation (control). Plant densities were sampled in October, 1997. The August census for the multi-species mix study showed irrigated plots that were sown in February, March and April had higher plant densities and more species than plots that were not irrigated. Irrigation had no effect on plant densities on plots that were seeded in December. Plots were used again in October following 18 mm of precipitation in September. Densities of three species, Ambrosia dumosa, Hymenoclea salsola, and L. tridentata, (warm-season species) were lower on irrigated plots sown in December, February, and March, and showed no response to irrigation on plots sown in April. Therefore, early spring irrigation did not facilitate establishment of warm-season species. These results suggest that these species are dependent upon precipitation while temperatures are warm in late summer or fall. However, control plots that were seeded in December had acceptable densities of these species. A more practical approach might be to avoid irrigation costs by seeding in December and waiting for fall precipitation. The remaining species (cool-season species) showed an opposite response to supplemental water with greater densities on irrigated plots sown in February, March, and April, and no response to irrigation on plots sown in December. While these results show that irrigation can extend the seeding window for cool-season species should it be necessary, it was also apparent that if seeds are sown by late December, irrigation is not necessary to achieve acceptable plant densities.

TRW Environmental Safety

2000-08-01T23:59:59.000Z

459

The Thermal Regulation of Gravitational Instabilities in Protoplanetary Disks II. Extended Simulations with Varied Cooling Rates  

E-Print Network (OSTI)

In order to investigate mass transport and planet formation by gravitational instabilities (GIs), we have extended our 3-D hydrodynamic simulations of protoplanetary disks from a previous paper. Our goal is to determine the asymptotic behavior of GIs and how it is affected by different constant cooling times. Initially, Rdisk = 40 AU, Mdisk = 0.07 Mo, M* = 0.5 Mo, and Qmin = 1.8. Sustained cooling, with tcool = 2 orps (outer rotation periods, 1 orp ~ 250 yrs), drives the disk to instability in ~ 4 orps. This calculation is followed for 23.5 orps. After 12 orps, the disk settles into a quasi-steady state with sustained nonlinear instabilities, an average Q = 1.44 over the outer disk, a well-defined power-law Sigma(r), and a roughly steady Mdot ~ 5(-7) Mo/yr. The transport is driven by global low-order spiral modes. We restart the calculation at 11.2 orps with tcool = 1 and 1/4 orp. The latter case is also run at high azimuthal resolution. We find that shorter cooling times lead to increased Mdots, denser and thinner spiral structures, and more violent dynamic behavior. The asymptotic total internal energy and the azimuthally averaged Q(r) are insensitive to tcool. Fragmentation occurs only in the high-resolution tcool = 1/4 orp case; however, none of the fragments survive for even a quarter of an orbit. Ring-like density enhancements appear and grow near the boundary between GI active and inactive regions. We discuss the possible implications of these rings for gas giant planet formation.

Annie C. Mejia; Richard H. Durisen; Megan K. Pickett; Kai Cai

2004-07-01T23:59:59.000Z

460

General-Purpose Heat Source development: Extended series test program large fragment tests  

SciTech Connect

General-Purpose Heat Source radioisotope thermoelectric generators (GPHS-RTGs) will provide electric power for the NASA Galileo and European Space Agency Ulysses missions. Each GPHS-RTG comprises two major components: GPHS modules, which provide thermal energy, and a thermoelectric converter, which converts the thermal energy into electric power. Each of the 18 GPHS modules in a GPHS-RTG contains four /sup 238/PuO/sub 2/-fueled capsules. LANL conducted a series of safety verification tests on the GPHS-RTG before the scheduled May 1986 launch of the Galileo spacecraft to assess the ability of the GPHS modules to contain the plutonia in potential accident environments. As a result of the Challenger 51-L accident in January 1986, NASA postponed the launch of Galileo; the launch vehicle was reconfigured and the spacecraft trajectory was modified. These actions prompted NASA to reevaluate potential mission accidents, and an extended series safety test program was initiated. The program included a series of large fragment tests that simulated the collision of solid rocket booster (SRB) fragments, generated in an SRB motor case rupture or resulting from a range safety officer SRB destruct action, with the GPHS-RTG. The tests indicated that fueled clads, inside a converter, will not breach or release fuel after a square (142 cm on a side) SRB fragment impacts flat-on at velocities up to 212 m/s, and that only the leading fueled capsules breach and release fuel after the square SRB fragment impacts the modules, inside the converter, edge-on at 95 m/s. 8 refs., 32 figs., 7 tabs.

Cull, T.A.

1989-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "favar extended 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.


461

GaSb substrates with extended IR wavelength for advanced space based applications  

SciTech Connect

GaSb substrates have advantages that make them attractive for implementation of a wide range of infrared (IR) detectors with higher operating temperatures for stealth and space based applications. A significant aspect that would enable widespread commercial application of GaSb wafers for very long wavelength IR (VLWIR) applications is the capability for transmissivity beyond 15 m. Due largely to the GaSb (antisite) defect and other point defects in undoped GaSb substrates, intrinsic GaSb is still slightly p-type and strongly absorbs in the VLWIR. This requires backside thinning of the GaSb substrate for IR transmissivity. An extremely low n-type GaSb substrate is preferred to eliminate thinning and provide a substrate solution for backside illuminated VLWIR devices. By providing a more homogeneous radial distribution of the melt solute to suppress GaSb formation and controlling the cooling rate, ultra low doped n:GaSb has been achieved. This study examines the surface properties and IR transmission spectra of ultra low doped GaSb substrates at both room and low temperatures. Atomic force microscopy (AFM), homoepitaxy by MBE, and infrared Fourier transform (FTIR) analysis was implemented to examine material quality. As compared with standard low doped GaSb, the ultra low doped substrates show over 50% transmission and consistent wavelength transparency past 23 m with improved %T at low temperature. Homoepitaxy and AFM results indicate the ultra low doped GaSb has a low thermal desorbtion character and qualified morphology. In summary, improvements in room temperature IR transmission and extended wavelength characteristics have been shown consistently for ultra low doped n:GaSb substrates.

Allen, Lisa P.; Flint, Patrick; Dallas, Gordon; Bakken, Daniel; Blanchat, Kevin; Brown, Gail J.; Vangala, Shivashankar R.; Goodhue, William D.; Krishnaswami, Kannan

2009-05-01T23:59:59.000Z

462

Brief Equivalence of hybrid dynamical models  

Science Conference Proceedings (OSTI)

This paper establishes equivalences among five classes of hybrid systems: mixed logical dynamical (MLD) systems, linear complementarity (LC) systems, extended linear complementarity (ELC) systems, piecewise affine (PWA) systems, and max-min-plus-scaling ... Keywords: Equivalent models, Hybrid systems, Piecewise affine systems

W. P. M. H. Heemels; B. De Schutter; A. Bemporad

2001-07-01T23:59:59.000Z

463

Extending and automating a Systems-Theoretic hazard analysis for requirements generation and analysis.  

SciTech Connect

Systems Theoretic Process Analysis (STPA) is a powerful new hazard analysis method designed to go beyond traditional safety techniques - such as Fault Tree Analysis (FTA) - that overlook important causes of accidents like flawed requirements, dysfunctional component interactions, and software errors. While proving to be very effective on real systems, no formal structure has been defined for STPA and its application has been ad-hoc with no rigorous procedures or model-based design tools. This report defines a formal mathematical structure underlying STPA and describes a procedure for systematically performing an STPA analysis based on that structure. A method for using the results of the hazard analysis to generate formal safety-critical, model-based system and software requirements is also presented. Techniques to automate both the analysis and the requirements generation are introduced, as well as a method to detect conflicts between the safety and other functional model-based requirements during early development of the system.

Thomas, John (Massachusetts Institute of Technology)

2012-05-01T23:59:59.000Z

464

Immersive Virtual Reality System Using BIM Application With Extended Vertical Field Of View  

E-Print Network (OSTI)

Building Information Modeling (BIM) model contains information about structural, architectural, MEP (Mechanical Electrical and Plumbing) and other numerous components of a building. Among these components, MEP constitutes about 50% of the project cost, and its design is relatively more complex because of the limited headroom available to locate these components. The coordination of these systems involves locating and routing several subcomponents in a manner that satisfies different types of constraints. The earlier version of BIM Computer Aided Virtual Environment (CAVE) did not have provisions to show the overhead components of a BIM model. Conventionally, models had to be tilted to visualize the overhead components. The process of tilting the models to look up is considered counterintuitive. Some of the popular CAVEs developed by leading Universities have a screen on top to show the overhead components but they have a major shortcoming with them. The BIM models had to be converted to a specific format before they can be visualized in the CAVE environments. This study is an attempt to address the shortcomings of the previous version of the BIM CAVE by suggesting a prototype setup with a 55" LCD screen on top of the existing three vertically placed LCD screens. The addition of one more screen on top increases the vertical field of view, that is, the extent to which the user can see vertically in a BIM model. The new BIM CAVE setup is run by a custom built application that makes use of the .Net API (Application Programming Interface) of the commercially available BIM application, Autodesk Navisworks 2012, to control the camera views for achieving an almost seamless semi-immersive virtual environment. The main objective of this research is to validate the effectiveness of the new setup suggested by using a qualitative research methodology called phenomenological study. Semi-structured informal interviews were conducted with the subject matter experts (SMEs) who are experienced in the field of BIM to know about the differences in the user experience after adding a screen on top of the earlier BIM CAVE setup. The main idea behind this qualitative research technique is to develop an understanding of how the SMEs perceived the idea of looking up to see the overhead components of the BIM model. This thesis explains the steps followed to develop the modified BIM CAVE setup in detail and findings of the qualitative study to know about the effectiveness of the suggested new setup.

Ganapathi Subramanian, Adithya

2012-08-01T23:59:59.000Z

465

The Retrieval of Asymmetric Tropical Cyclone Structures Using Doppler Radar Simulations and Observations with the Extended GBVTD Technique  

Science Conference Proceedings (OSTI)

The ground-based velocity track display (GBVTD) technique is extended to two Doppler radars to retrieve the structure of a tropical cyclone’s (TC’s) circulation. With this extension, it is found that the asymmetric part of the TC radial wind ...

Yu-Chieng Liou; Tai-Chi Chen Wang; Wen-Chau Lee; Ya-Ju Chang

2006-04-01T23:59:59.000Z

466

A Comparison of Extended and Quasigeostrophic Dynamics for a Case of Small–Rossby Number Extratropical Cyclone Development  

Science Conference Proceedings (OSTI)

This note compares the extended (EXT) and quasigeostrophic (QG) dynamics of a small–Rossby number extratropical cyclone using the Zwack–Okossi (ZO) equation. Applied to a cyclone that occurred on 8–9 November 1985 over the North Atlantic Ocean, ...

James M. Vasilj; Phillip J. Smith

1997-12-01T23:59:59.000Z

467

Numerical simulation of four-field extended magnetohydrodynamics in dynamically adaptive curvilinear coordinates via Newton-Krylov-Schwarz  

Science Conference Proceedings (OSTI)

Numerical simulations of the four-field extended magnetohydrodynamics (MHD) equations with hyper-resistivity terms present a difficult challenge because of demanding spatial resolution requirements. A time-dependent sequence of r-refinement adaptive ... Keywords: Dynamically adaptive grid, Equidistribution principle, MHD, Magnetic reconnection, Monge-Ampère equation, Monge-Kantorovich optimization, NKS, Structured grid, r-Refinement

Xuefei Yuan; Stephen C. Jardin; David E. Keyes

2012-07-01T23:59:59.000Z

468

Sensorless Direct Torque Control For Salient Pole PMSM Based on Extended Kalman Filter Fed By AC/DC/AC Converter  

E-Print Network (OSTI)

, Algeria Abstract -- In this paper, a new sensorless Interior Permanent Magnet Synchronous Motor (IPMSM. Key words-- DTC; sensorless control; extended Kalman filter; Permanent Magnet Synchronous Motor; boost-rectifier. I. INTRODUCTION Permanent magnet synchronous motors (PMSMS) are widely used in many applications

Paris-Sud XI, Université de

469

Extending a facility training program to include a minority skills training program  

Science Conference Proceedings (OSTI)

The Stanford Linear Accelerator Center (SLAC) is a laboratory performing basic research in high-energy physics, operated by Stanford University under contract to the Atomic Energy Commission. The major computer system at SLAC is an IBM 360 Model 91 operating ...

Mel D. Ray

1970-06-01T23:59:59.000Z

470

An inter-market arbitrage trading system based on extended classifier systems  

Science Conference Proceedings (OSTI)

Traditionally, the most popular arbitrage strategy is derived from the cost of carry model or by using the econometrics approach. However, these approaches have difficulty in dealing with intra-day 1-min trading data and capturing inter-market arbitrage ... Keywords: Data stream, High frequency data, Intra-day trading, Trading rule, XCS

Yu-Chia Hsu; An-Pin Chen; Jia-Haur Chang

2011-04-01T23:59:59.000Z

471

RINSE: The Real-Time Immersive Network Simulation Environment for Network Security Exercises (Extended Version)  

Science Conference Proceedings (OSTI)

The Real-Time Immersive Network Simulation Environment (RINSE) simulator is being developed to support large-scale network security preparedness and training exercises, involving hundreds of players and a modeled network composed of hundreds of local-area ... Keywords: Simulation, emulation, networking, security

Michael Liljenstam; Jason Liu; David M. Nicol; Yougu Yuan; Guanhua Yan; Chris Grier

2006-01-01T23:59:59.000Z

472

Tracking time-varying parameters in software systems with extended Kalman filters  

Science Conference Proceedings (OSTI)

Autonomic control of a service system can take advantage of a performance model only if a way can be found to track the changes in the system. A Kalman Filter provides a framework for integrating various kinds of measured data, and for tracking changes ...

Tao Zheng; Jinmei Yang; Murray Woodside; Marin Litoiu; Gabriel Iszlai

2005-10-01T23:59:59.000Z

473

Energy Injection in GRB Afterglow Models  

E-Print Network (OSTI)

We extend the standard fireball model, widely used to interpret gamma-ray burst (GRB) afterglow light curves, to include energy injections, and apply the model to the afterglow light curves of GRB 990510, GRB 000301C and GRB 010222. We show that discrete energy injections can cause temporal variations in the optical light curves and present fits to the light curves of GRB 000301C as an example. A continuous injection may be required to interpret other bursts such as GRB 010222. The extended model accounts reasonably well for the observations in all bands ranging from X-rays to radio wavelengths. In some cases, the radio light curves indicate that additional model ingredients may be needed.

Gudlaugur Johannesson; Gunnlaugur Bjornsson; Einar H. Gudmundsson

2006-05-11T23:59:59.000Z

474

Application of Interactive Genetic Algorithms to Boid Model Based Artificial Fish Schools  

Science Conference Proceedings (OSTI)

In this paper, we present an extended boid model for simulating the aggregate moving of fish schools in a complex environment. The boids model is an example of an individual-based model. The global behavior of the school is simulated by a large number ... Keywords: Boid model, aggregate moving, behavior rule, fish school, interactive genetic algorithm (IGA)

Yen-Wei Chen; Kanami Kobayashi; Hitoshi Kawabayashi; Xinyin Huang

2008-09-01T23:59:59.000Z

475

MULTI - TRACER CONTROL ROOM AIR INLEAKAGE PROTOCOL AND SIMULATED PRIMARY AND EXTENDED MULTI - ZONE RESULTS.  

SciTech Connect

The perfluorocarbon tracer (PFT) technology can be applied simultaneously to the wide range in zonal flowrates (from tens of cfms in some Control Rooms to almost 1,000,000 cfm in Turbine Buildings), to achieve the necessary uniform tagging for subsequent determination of the desired air inleakage and outleakage from all zones surrounding a plant's Control Room (CR). New types of PFT sources (Mega sources) were devised and tested to handle the unusually large flowrates in a number of HVAC zones in power stations. A review of the plans of a particular nuclear power plant and subsequent simulations of the tagging and sampling results confirm that the technology can provide the necessary concentration measurement data to allow the important ventilation pathways involving the Control Room and its air flow communications with all adjacent zones to be quantitatively determined with minimal uncertainty. Depending on need, a simple single or 3-zone scheme (involving the Control Room alone or along with the Aux. Bldg. and Turbine Bldg.) or a more complex test involving up to 7 zones simultaneously can be accommodated with the current revisions to the technology; to test all the possible flow pathways, several different combinations of up to 7 zones would need to be run. The potential exists that for an appropriate investment, in about 2 years, it would be possible to completely evaluate an entire power plant in a single extended multizone test with up to 12 to 13 separate HVAC zones. With multiple samplers in the Control Room near each of the contiguous zones, not only will the prevalent inleakage or outleakage zones be documented, but the particular location of the pathway's room of ingress can be identified. The suggested protocol is to perform a 3-zone test involving the Control Room, Aux. Bldg., and Turbine Bldg. to (1) verify CR total inleakage and (2) proportion that inleakage to distinguish that from the other 2 major buildings and any remaining untagged locations. These results would then direct the next subsequent tests. Final results would point to where mitigation steps should be initiated. Protocols for repeat testing as well as long term continual testing are suggested.

DIETZ,R.N.

2002-01-01T23:59:59.000Z

476

Design, Control and Motion Planning for a Novel Modular Extendable Robotic Manipulator  

E-Print Network (OSTI)

This dissertation discusses an implementation of a design, control and motion planning for a novel extendable modular redundant robotic manipulator in space constraints, which robots may encounter for completing required tasks in small and constrained environment. The design intent is to facilitate the movement of the proposed robotic manipulator in constrained environments, such as rubble piles. The proposed robotic manipulator with multi Degree of Freedom (m-DOF) links is capable of elongating by 25% of its nominal length. In this context, a design optimization problem with multiple objectives is also considered. In order to identify the benefits of the proposed design strategy, the reachable workspace of the proposed manipulator is compared with that of the Jet Propulsion Laboratory (JPL) serpentine robot. The simulation results show that the proposed manipulator has a relatively efficient reachable workspace, needed in constrained environments. The singularity and manipulability of the designed manipulator are investigated. In this study, we investigate the number of links that produces the optimal design architecture of the proposed robotic manipulator. The total number of links decided by a design optimization can be useful distinction in practice. Also, we have considered a novel robust bio-inspired Sliding Mode Control (SMC) to achieve favorable tracking performance for a class of robotic manipulators with uncertainties. To eliminate the chattering problem of the conventional sliding mode control, we apply the Brain Emotional Learning Based Intelligent Control (BELBIC) to adaptively adjust the control input law in sliding mode control. The on-line computed parameters achieve favorable system robustness in process of parameter uncertainties and external disturbances. The simulation results demonstrate that our control strategy is effective in tracking high speed trajectories with less chattering, as compared to the conventional sliding mode control. The learning process of BLS is shown to enhance the performance of a new robust controller. Lastly, we consider the potential field methodology to generate a desired trajectory in small and constrained environments. Also, Obstacle Collision Avoidance (OCA) is applied to obtain an inverse kinematic solution of a redundant robotic manipulator.

Yi, Hak 1979-

2012-12-01T23:59:59.000Z

477

Residential Sector Demand Module 1998, Model Documentation  

Reports and Publications (EIA)

This is the fourth edition of the Model Documentation Report: Residential Sector DemandModule of the National Energy Modeling System (NEMS). It reflects changes made to themodule over the past year for the Annual Energy Outlook 1998. Since last year, severalnew end-use services were added to the module, including: Clothes washers,dishwashers, furnace fans, color televisions, and personal computers. Also, as with allNEMS modules, the forecast horizon has been extended to the year 2020.

John H. Cymbalsky

1998-01-01T23:59:59.000Z

478

ATLAS Inner Detector Event Data Model  

Science Conference Proceedings (OSTI)

The data model for event reconstruction (EDM) in the Inner Detector of the ATLAS experiment is presented. Different data classes represent evolving stages in the reconstruction data flow, and specific derived classes exist for the sub-detectors. The Inner Detector EDM also extends the data model for common tracking in ATLAS and is integrated into the modular design of the ATLAS high-level trigger and off-line software.

ATLAS; Akesson, F.; Costa, M.J.; Dobos, D.; Elsing, M.; Fleischmann, S.; Gaponenko, A.; Gnanvo, K.; Keener, P.T.; Liebig, W.; Moyse, E.; Salzburger, A.; Siebel, M.; Wildauer, A.

2007-12-12T23:59:59.000Z

479

Directory of Energy Information Administration Models 1993  

SciTech Connect

This directory contains descriptions about each model, including the title, acronym, purpose, followed by more detailed information on characteristics, uses, and requirements. Sources for additional information are identified. Included in this directory are 35 EIA models active as of May 1, 1993. Models that run on personal computers are identified by ``PC`` as part of the acronym. EIA is developing new models, a National Energy Modeling System (NEMS), and is making changes to existing models to include new technologies, environmental issues, conservation, and renewables, as well as extend forecast horizon. Other parts of the Department are involved in this modeling effort. A fully operational model is planned which will integrate completed segments of NEMS for its first official application--preparation of EIA`s Annual Energy Outlook 1994. Abstracts for the new models will be included in next year`s version of this directory.

Not Available

1993-07-06T23:59:59.000Z

480

Testing alternative models of individuals' social media involvement and satisfaction  

Science Conference Proceedings (OSTI)

This study extends the Technology Acceptance Model 3 (TAM 3) within the context of the rapidly evolving area of social media. Since social media requires the user's active participation and processing of information as well as the creation of user-generated ... Keywords: Involvement, Social media sites, Social media usage intention, TAM 3, Three alternative models, User satisfaction

Jeen-Su Lim, Abdulrahman Al-Aali, John H. Heinrichs, Kee-Sook Lim

2013-11-01T23:59:59.000Z

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481

Exact cosmological solutions of models with an interacting dark sector  

E-Print Network (OSTI)

We extend the First Order Formalism for cosmological models, developed including an interaction between a fermionic and a scalar field. Cosmological exact solutions, describing universes filled with interacting dark energy and dark matter, have been obtained. We suggest some alternative couplings that yield solutions for the scalar field that could model the present expansion of our universe.

Pavan, A B; Micheletti, S; Ferreira, E G M; de Souza, J C C

2011-01-01T23:59:59.000Z