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1

Dynamics and Spatial Distribution of Electrons in Quantum Wells at Interfaces Determined by Femtosecond Photoemission Spectroscopy  

SciTech Connect (OSTI)

The dynamics of excited electrons in insulator quantum well states on a metal substrate were determined by femtosecond two-photon photoemission for the first time. Lifetimes are reported for the first three excited states for 1{endash}6 atomic layers of Xe on Ag(111). As the image states evolve into quantum well states with increasing coverage, the lifetimes undergo an oscillation as the layer boundary crosses each node of the wave function. The lifetime data are modeled by extending the two-band nearly free-electron approximation to account for the presence of a dielectric layer. The lifetimes are shown to depend on the spatial distribution of the interfacial electron. {copyright} {ital 1997} {ital The American Physical Society}

McNeill, J.D.; Lingle, R.L. Jr.; Ge, N.; Wong, C.M.; Jordan, R.E.; Harris, C.B. [Department of Chemistry, University of California, Berkeley, California 94720, and Chemical Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)] [Department of Chemistry, University of California, Berkeley, California 94720, and Chemical Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

1997-12-01T23:59:59.000Z

2

A feasibility study for experimentally determining dynamic force distribution in a lap joint.  

SciTech Connect (OSTI)

Developing constitutive models of the physics in mechanical joints is currently stymied by inability to measure forces and displacements within the joint. The current state of the art estimates whole joint stiffness and energy loss per cycle from external measured force input and one or two acceleration responses. To validate constitutive models beyond this state requires a measurement of the distributed forces and displacements at the joint interface. Unfortunately, introducing measurement devices at the interface completely disrupts the desired physics. A feasibility study is presented for a non-intrusive method of solving for the interface dynamic forces from an inverse problem using full field measured responses. The responses come from the viewable surface of a beam. The noise levels associated with digital image correlation and continuous scanning laser Doppler velocimetry are evaluated from typical beam experiments. Two inverse problems are simulated. One utilizes the extended Sum of Weighted Accelerations Technique (SWAT). The second is a new approach dubbed the method of truncated orthogonal forces. These methods are much more robust if the contact patch geometry is well identified. Various approaches to identifying the contact patch are investigated, including ion marker tracking, Prussian blue and ultrasonic measurements. A typical experiment is conceived for a beam which has a lap joint at one end with a single bolt connecting it to another identical beam. In a virtual test using the beam finite element analysis, it appears that the SWAT inverse method requires evaluation of too many coefficients to adequately identify the force distribution to be viable. However, the method of truncated orthogonal forces appears viable with current digital image correlation (and probably other) imaging techniques.

Mayes, Randall Lee

2013-11-01T23:59:59.000Z

3

Compiler Techniques for Determining Data Distribution and Generating Communication Sets on DistributedMemory Multicomputers 1  

E-Print Network [OSTI]

Compiler Techniques for Determining Data Distribution and Generating Communication Sets and generating communication sets on distributed memory multicomputers. First, we propose a dynamic programming; 1 Introduction Arrays distribution and communication sets generation are two problems we must solve

Chen, Sheng-Wei

4

Dynamics of spectral algorithms for distributed routing  

E-Print Network [OSTI]

In the past few decades distributed systems have evolved from man-made machines to organically changing social, economic and protein networks. This transition has been overwhelming in many ways at once. Dynamic, heterogeneous, ...

Maymounkov, Petar (Petar Borissov)

2012-01-01T23:59:59.000Z

5

Distributed and Networked Dynamic Resource Allocation, Scheduling, and Control Experiments  

E-Print Network [OSTI]

Distributed and Networked Dynamic Resource Allocation, Scheduling, and Control Experiments Nicanor into decentralized and networked dynamic resource allocation, scheduling, and control. 2 Questions 1. What, "Experiments for decentralized and networked dynamic resource allocation, scheduling, and control," Submitted

6

Determining the extent and dynamics of  

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

the extent and dynamics of the extent and dynamics of surface water for the ABoVE field campaign M.L. Carroll 1 , C.M. DiMiceli 2 , J.R.G. Townshend 2 , R.A. Sohlberg 2 1: Sigma Space Corporation 2:University of Maryland The following Data Management Plan was part of the NASA ROSES 2012 Proposal "Determining the extent and dynamics of surface water for the ABoVE field campaign" (Abstract) submitted to the Terrestrial Ecology Program. It is presented as an example plan. Data Management Plan The proposed project will generate 3 new maps of surface water extent in the North American Arctic representing 3 time periods 1991, 2001 and 2011. These maps will be derived from a

7

Local dynamic update for component-based distributed systems  

Science Journals Connector (OSTI)

Dynamic evolution is a key aspect of the design, development, and maintenance of complex and distributed software systems built by integrating components. Evolution, traditionally obtained by producing software upgrades, may derive from changes in the ... Keywords: component-based distributed system, dynamic reconfiguration, dynamic software update, software evolution

Valerio Panzica La Manna

2012-06-01T23:59:59.000Z

8

Dynamic software update for component-based distributed systems  

Science Journals Connector (OSTI)

Dynamic evolution is a key aspect of the design, development, and maintenance of complex and distributed software systems built by integrating components. Evolution, tradi- tionally obtained by producing software upgrades, may de- rive from changes in ... Keywords: component-based distributed system, dynamic reconfiguration, dynamic software update, software evolution

Valerio Panzica La Manna

2011-06-01T23:59:59.000Z

9

Effects of dynamical evolution on the distribution of substructures  

E-Print Network [OSTI]

We develop a semi-analytical model that determines the evolution of the mass, position and internal structure of dark matter substructures orbiting in dark matter haloes. We apply this model to the case of the Milky Way. We focus in particular on the effects of mass loss, dynamical friction and substructure--substructure interactions, the last of which has previously been ignored in analytic models of substructure evolution. Our semi-analytical treatment reproduces both the spatial distribution of substructures and their mass function as obtained from the most recent N-body cosmological calculations of Gao et al. (2004). We find that, if mass loss is taken into account, the present distribution of substructures is practically insensitive to dynamical friction and scatterings from other substructures. Implementing these phenomena leads to a slight increase (~5%) in the number of substructures at r0.35 r_vir reflects the orbital properties at infall and is, therefore, purely determined by the dark matter environment around the host halo and has not been altered by dynamical evolution.

J. Penarrubia; A. J. Benson

2004-12-15T23:59:59.000Z

10

Dynamic Resource Management for Adaptive Distributed Information Fusion in  

E-Print Network [OSTI]

Dynamic Resource Management for Adaptive Distributed Information Fusion in Large Volume for distributed information fusion to address large volume surveil- lance challenges, assuming a multitude of different sensor types on multi- ple mobile platforms for intelligence, surveillance and reconnaissance. Our

Zhang, Richard "Hao"

11

Determination of stress levels for dynamic fracture of oil shale  

Science Journals Connector (OSTI)

The dynamic tensile-stress amplitudes necessary to cause complete spall in unconfined oil-shale samples were experimentally determined in the laboratory...

Michael P. Felix

1977-10-01T23:59:59.000Z

12

Method of determining interwell oil field fluid saturation distribution  

DOE Patents [OSTI]

A method of determining the oil and brine saturation distribution in an oil field by taking electrical current and potential measurements among a plurality of open-hole wells geometrically distributed throughout the oil field. Poisson's equation is utilized to develop fluid saturation distributions from the electrical current and potential measurement. Both signal generating equipment and chemical means are used to develop current flow among the several open-hole wells.

Donaldson, Erle C. (Bartlesville, OK); Sutterfield, F. Dexter (Bartlesville, OK)

1981-01-01T23:59:59.000Z

13

Determination of tritium distribution in labeled compounds using EPR spectrometry  

SciTech Connect (OSTI)

Usually, the tritium distribution in a labeled compound is analyzed by T-NMR spectrometry. NMR equipment is expensive and its sensitivity is lower in comparison to EPR spectrometry. In this paper, the possibility of determining the distribution of tritium in a labeled molecule using self-radiolytic decay processes was analyzed. (authors)

Postolache, C.; Matei, L.; Georgescu, R. [Horia Hulubei, National Inst. for Physics and Nuclear Engineering IFIN HH, 407 Atomistilor street, 077125 Magurele Ilfov (Romania)

2008-07-15T23:59:59.000Z

14

E-Print Network 3.0 - approximate distributed dynamic Sample...  

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

equilibrium distribution by construction... Infinite heat reservoir, T 12;Microscopic Ising Dynamics... ;Microscopic Ising Dynamics Relaxes to the correct equilibrium...

15

Scalable Load Distribution and Load Balancing for Dynamic Parallel Programs  

E-Print Network [OSTI]

shown that the algorithm scales according to the definition of scalability given following. LoadScalable Load Distribution and Load Balancing for Dynamic Parallel Programs E. Berger and J. C of an integrated load distribution-load balancing algorithm which was targeted to be both efficient and scalable

Berger, Emery

16

Dynamic Load Balancing for the Distributed Mining of Molecular Structures  

E-Print Network [OSTI]

Dynamic Load Balancing for the Distributed Mining of Molecular Structures Giuseppe Di Fatta, Member the data mining community, where algorithms to find frequent graphs have received increasing attention over a distributed approach to the frequent subgraph mining problem to discover interesting patterns in molecular

Berthold, Michael R.

17

Distributed dynamic load balancing for pipelined computations on heterogeneous systems  

Science Journals Connector (OSTI)

One of the most significant causes for performance degradation of scientific and engineering applications on high performance computing systems is the uneven distribution of the computational work to the resources of the system. This effect, which is ... Keywords: Distributed model, Dynamic load balancing algorithms, Loops with dependencies, Master-worker model, Non-dedicated heterogeneous systems, Synchronization, Weighting

Ioannis Riakiotakis; Florina M. Ciorba; Theodore Andronikos; George Papakonstantinou

2011-10-01T23:59:59.000Z

18

Determination analysis of energy conservation standards for distribution transformers  

SciTech Connect (OSTI)

This report contains information for US DOE to use in making a determination on proposing energy conservation standards for distribution transformers as required by the Energy Policy Act of 1992. Potential for saving energy with more efficient liquid-immersed and dry-type distribution transformers could be significant because these transformers account for an estimated 140 billion kWh of the annual energy lost in the delivery of electricity. Objective was to determine whether energy conservation standards for distribution transformers would have the potential for significant energy savings, be technically feasible, and be economically justified from a national perspective. It was found that energy conservation for distribution transformers would be technically and economically feasible. Based on the energy conservation options analyzed, 3.6-13.7 quads of energy could be saved from 2000 to 2030.

Barnes, P.R.; Van Dyke, J.W.; McConnell, B.W.; Das, S.

1996-07-01T23:59:59.000Z

19

Methods to determine the size distribution of airborne rhinovirus  

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

Methods to determine the size distribution of airborne rhinovirus Methods to determine the size distribution of airborne rhinovirus Title Methods to determine the size distribution of airborne rhinovirus Publication Type Report Year of Publication 2004 Authors Russell, Marion L., Regine Goth-Goldstein, Michael G. Apte, and William J. Fisk Publisher Lawrence Berkeley National Laboratory Abstract About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Prior research has demonstrated that rhinovirus infections can be transmitted via person-to-person contact and via inhalation of infectious aerosols. Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. To detect airborne HRV, we developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine the assay detection limit of 5 fg of HRV RNA with a linear range over 10,000-fold. This assay was used to quantify the size distribution of an artificially-produced HRV aerosol captured with an Andersen six-stage cascade impactor. In future studies, we hope to use the methods developed here to characterize the size distribution of naturally occurring viral-aerosols

20

Dynamic radial distribution function from inelastic neutron scattering  

Science Journals Connector (OSTI)

A real-space, local dynamic structure function g(r,?) is defined from the dynamic structure function S(Q,?), which can be measured using inelastic neutron scattering. At any particular frequency ?, S(Q,?) contains Q-dependent intensity oscillations which reflect the spatial distribution and relative displacement directions for the atoms vibrating at that frequency. Information about local and dynamic atomic correlations is obtained from the Fourier transform of these oscillations g(r,?) at the particular frequency. g(r,?) can be formulated such that the elastic and frequency-summed limits correspond to the average and instantaneous radial distribution function, respectively, and is thus called the dynamic radial distribution function. As an example, the dynamic radial distribution function is calculated for fcc nickel in a model which considers only the harmonic atomic displacements due to phonons. The results of these calculations demonstrate that the magnitude of the atomic correlations can be quantified and g(r,?) is a well-defined correlation function. This leads to a simple prescription for investigating local lattice dynamics.

R. J. McQueeney

1998-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Determining the Adequate Level of Distributed Generation Penetration in  

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

Determining the Adequate Level of Distributed Generation Penetration in Determining the Adequate Level of Distributed Generation Penetration in Future Grids Speaker(s): Johan Driesen Date: March 18, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare In this talk, Johan will discuss the technical barriers met while deploying distributed generation (DG) technology in the grid. These are related to voltage quality, reliability, stability of the grid, but also safety, environmental and economic issues are important. Eventually, the question 'how far can you go ?' is addressed. The range from small-scale local DG such as photovoltaics to large-scale (off-shore) wind farms are dealt with, each with their specific issues. The talk is illustrated with examples from research projects at the KULeuven financied by national and European

22

Conformational statistics of poly(dimethylsiloxane). 1. Probability distribution of rotational isomers from molecular dynamics simulations  

Science Journals Connector (OSTI)

Conformational statistics of poly(dimethylsiloxane). 1. Probability distribution of rotational isomers from molecular dynamics simulations ...

Ivet Bahar; Ignacio Zuniga; Robert Dodge; Wayne L. Mattice

1991-05-01T23:59:59.000Z

23

Portable lamp with dynamically controlled lighting distribution  

DOE Patents [OSTI]

A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) arranged vertically with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum insures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. The lighting system may be designed for the home, hospitality, office or other environments.

Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

2001-01-01T23:59:59.000Z

24

Distributed Dynamics of Systems with Closed Kinematic Chains  

E-Print Network [OSTI]

) ­ Orin and Walker (1982): Efficient dynamic computer simulation of robotic mechanisms ­ Featherstone block predictor-corrector methods of ODE's Chain-level distribution ­ McMillan, Sadayappan and Orin Two NASA robots carrying a metal beam (a) (b) Figure 2.10: ARNOLD, MDOF vehicle with compliant linkage

Krovi, Venkat

25

Building Dynamic Computing Infrastructures over Distributed Clouds Pierre Riteau  

E-Print Network [OSTI]

, known as private clouds. Combining both public and private infrastructures creates so- called hybridBuilding Dynamic Computing Infrastructures over Distributed Clouds Pierre Riteau University--The emergence of cloud computing infrastructures brings new ways to build and manage computing systems

Paris-Sud XI, Université de

26

Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems  

E-Print Network [OSTI]

Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems Rekha Bachwani,ricardob}@cs.rutgers.edu {gryz,dubnicki}@nec-labs.com Abstract In this paper, we argue that the reliability of large-scale storage systems can be significantly improved by using bet- ter reliability metrics and more efficient

Bianchini, Ricardo

27

Dynamic Program Phase Detection in Distributed Shared-Memory Multiprocessors  

SciTech Connect (OSTI)

We present a novel hardware mechanism for dynamic program phase detection in distributed shared-memory (DSM) multiprocessors. We show that successful hardware mechanisms for phase detection in uniprocessors do not necessarily work well in DSM systems, since they lack the ability to incorporate the parallel application's global execution information and memory access behavior based on data distribution. We then propose a hardware extension to a well-known uniprocessor mechanism that significantly improves phase detection in the context of DSM multiprocessors. The resulting mechanism is modest in size and complexity, and is transparent to the parallel application.

Ipek, E; Martinez, J F; de Supinski, B R; McKee, S A; Schulz, M

2006-03-06T23:59:59.000Z

28

First JAM results on the determination of polarized parton distributions  

SciTech Connect (OSTI)

The Jefferson Lab Angular Momentum (JAM) Collaboration is a new initiative to study the angular momentum dependent structure of the nucleon. First results on the determination of spin-dependent parton distribution functions at intermediate and large x from world data on polarized deep-inelastic scattering are presented. Different aspects of global QCD analysis are discussed, including the effects of nuclear structure of deuterium and {sup 3}He targets, target mass corrections and higher twist contributions to the g{sub 1} and g{sub 2} structure functions.

Accardi, Alberto [Hampton Univ., VA and JLAB, Newport News, VA (United States); Jimenez-Delgado, Pedro [JLAB, Newport News, VA (United States); Melnitchouk, Wally [JLAB, Newport News, VA (United States)

2014-01-01T23:59:59.000Z

29

Molecular Determinants and Dynamics of Hepatitis C Virus Secretion  

E-Print Network [OSTI]

Molecular Determinants and Dynamics of Hepatitis C Virus Secretion Kelly E. Coller, Nicholas S virus (HCV) production involves the assembly of virions on or near the surface of lipid droplets. However, the cellular requirements for and a mechanistic understanding of HCV secretion are incomplete

30

Political dynamics determined by interactions between political leaders and voters.  

SciTech Connect (OSTI)

The political dynamics associated with an election are typically a function of the interplay between political leaders and voters, as well as endogenous and exogenous factors that impact the perceptions and goals of the electorate. This paper describes an effort by Sandia National Laboratories to model the attitudes and behaviors of various political groups along with that population's primary influencers, such as government leaders. To accomplish this, Sandia National Laboratories is creating a hybrid system dynamics-cognitive model to simulate systems- and individual-level political dynamics in a hypothetical society. The model is based on well-established psychological theory, applied to both individuals and groups within the modeled society. Confidence management processes are being incorporated into the model design process to increase the utility of the tool and assess its performance. This project will enhance understanding of how political dynamics are determined in democratic society.

Bernard, Michael Lewis; Bier, Asmeret; Backus, George A.; Hills, Richard Guy

2010-03-01T23:59:59.000Z

31

Tomographic determination of the power distribution in electron beams  

DOE Patents [OSTI]

A tomographic technique for determining the power distribution of an electron beam using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams. A refractory metal disk with a number of radially extending slits is placed above a Faraday cup. The beam is swept in a circular pattern so that its path crosses each slit in a perpendicular manner, thus acquiring all the data needed for a reconstruction in one circular sweep. Also, a single computer is used to generate the signals actuating the sweep, to acquire that data, and to do the reconstruction, thus reducing the time and equipment necessary to complete the process.

Teruya, Alan T. (Livermore, CA); Elmer, John W. (Pleasanton, CA)

1996-01-01T23:59:59.000Z

32

Determination of dynamic fracture parameters for HF?1 steel  

Science Journals Connector (OSTI)

Dynamic fracture parameters have been determined for two heat treatments of HF?1 steel. A gas gun was used for the experiments. Different amounts of fracture damage were produced in HF?1 steel specimens under known impact conditions. The specimens were soft recovered sectioned and polished to reveal any internal microscopic fracture. The fracturecracks were then digitized. The velocities of the 1.15? 1.59? and 2.37?mm?thick impactor disks range from 0.120 to 0.276 km/s. The specimen disks were 3.18? and 6.35?mm thick. An SRI stress wave propagationcomputer program with a brittlefracturemodel was used for calculating the dynamic fracture parameters. A series of Hugoniot experiments was performed for HF?1 steel to determine equation of state input data for the computer program. The Hugoniot elastic limits were 2.2 and 2.4 GPa for the two heat treatments.

Willis Mock Jr.; William H. Holt

1982-01-01T23:59:59.000Z

33

Identification of Critical Parameters for Distribution Networks with DFIG and Dynamic loads  

E-Print Network [OSTI]

Identification of Critical Parameters for Distribution Networks with DFIG and Dynamic loads M. S of distribution network with Doubly Fed Induction Generator (DFIG) is presented in a different way where an analysis to investigate the critical parameters for distribution systems with dynamic loads where DFIGs

Pota, Himanshu Roy

34

Multi-objective planning of electrical distribution systems using dynamic programming  

Science Journals Connector (OSTI)

This paper presents a novel dynamic programming approach for multi-objective planning of electrical distribution systems. In this planning, the optimal feeder routes and branch conductor sizes of a distribution system are determined by simultaneous optimization of cost and reliability. The multiple planning objectives are minimization of: (i) installation and operational cost, and (ii) interruption cost. The first objective function consists of the installation cost of new feeder branches and substations, maintenance cost of the existing and new feeder branches, and the cost of energy losses. The second objective function measures the reliability of the distribution network in terms of the associated interruption costs for all the branches, which includes the cost of non-delivered energy, cost of repair, and the customer damage cost due to interruptions. A dynamic programming based planning algorithm for optimization of the feeder routes and branch conductor sizes is proposed. A set of Pareto solutions is obtained using a weighted aggregation of the two objectives with different weight settings. The proposed approach is evaluated on 21-, 54-, and 100-node distribution systems. The simulation test results are analyzed with various case studies and are compared with those of two existing planning approaches based on multi-objective evolutionary algorithm.

S. Ganguly; N.C. Sahoo; D. Das

2013-01-01T23:59:59.000Z

35

Determining the Potential Distribution of Vegetation, Crops and Agricultural Productivity  

Science Journals Connector (OSTI)

The terrestrial biosphere component of the Integrated Model to Assess the Greenhouse Effect (IMAGE 2.0) uses changes in land cover to compute dynamically the greenhouse gas fluxes between the terrestrial biosp...

R. Leemans; G. J. van den Born

1994-01-01T23:59:59.000Z

36

Determining the potential distribution of vegetation, crops and agricultural productivity  

Science Journals Connector (OSTI)

The terrestrial biosphere component of the Integrated Model to Assess the Greenhouse Effect (IMAGE 2.0) uses changes in land cover to compute dynamically the greenhouse gas fluxes between the terrestrial biosp...

R. Leemans; G. J. van den Born

1994-07-01T23:59:59.000Z

37

A dynamic slack management technique for real-time distributed embedded systems  

E-Print Network [OSTI]

This work presents a novel slack management technique, the Service Rate Based Slack Distribution Technique, for dynamic real-time distributed embedded systems targeting the reduction and management of energy consumption. Energy minimization...

Acharya, Subrata

2006-04-12T23:59:59.000Z

38

Left-ventricular shape determines intramyocardial stroke work distribution  

Science Journals Connector (OSTI)

The left-ventricle often undergoes large shape changes in the remodelling process, which is now considered to be an important indication of disease progression. Therefore, the influence on intramyocardial work load distribution was examined in a finite-element ...

Hon Fai Choi; Frank E. Rademakers; Piet Claus

2011-05-01T23:59:59.000Z

39

Dark Matter distribution in the Milky Way: microlensing and dynamical constraints  

SciTech Connect (OSTI)

We show that current microlensing and dynamical observations of the Galaxy permit to set interesting constraints on the Dark Matter local density and profile slope towards the galactic centre. Assuming state-of-the-art models for the distribution of baryons in the Galaxy, we find that the most commonly discussed Dark Matter profiles (viz. Navarro-Frenk-White and Einasto) are consistent with microlensing and dynamical observations, while extreme adiabatically compressed profiles are robustly ruled out. When a baryonic model that also includes a description of the gas is adopted, our analysis provides a determination of the local Dark Matter density, ?{sub 0} = 0.20?0.56 GeV/cm{sup 3} at 1?, that is found to be compatible with estimates in the literature based on different techniques.

Iocco, Fabio; Bertone, Gianfranco [Institut d'Astrophysique de Paris, UMR 7095-CNRS, Univ. Pierre and Marie Curie, 98bis Bd Arago 75014 Paris (France); Pato, Miguel; Jetzer, Philippe, E-mail: iocco@iap.fr, E-mail: migpato@physik.uzh.ch, E-mail: gf.bertone@gmail.com, E-mail: jetzer@physik.uzh.ch [Institute for Theoretical Physics, University of Zrich, Winterthurerstrasse 190, 8057 Zrich (Switzerland)

2011-11-01T23:59:59.000Z

40

Experimental determination of the distribution of tail states of hydrogenated amorphous silicon: A transient photocurrent analysis  

SciTech Connect (OSTI)

Recent experimental developments have cast doubt on the validity of the common assumption that the distribution of tail states of hydrogenated amorphous silicon exhibits a single exponential functional form. The authors employ transient photocurrent decay measurements to determine this distribution of tail states. In their approach, however, they determine the distribution of tail states directly from the experimental data, without assuming, a priori, a specific functional form. It is found that these experimental results are consistent with other more recent experimental determinations of the distribution of tail states, suggesting the possibility of deviations from a single exponential distribution of tail states in hydrogenated amorphous silicon.

Webb, D.P.; Chan, F.Y.M.; Zou, X.C.; Chan, Y.C.; Lam, Y.W.; Lin, S.H.; O'Leary, S.K.; Lim, P.K.

1997-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Small-Signal Stability Assessment of Active Distribution Networks with Dynamic Loads  

E-Print Network [OSTI]

. Index Terms-- Distributed generation, eigenvalue, induction motor, small-signal stability, voltage mode-- This paper investigates small-signal stability of a distribution system with distributed generator and induction motor load, as a dynamic element. The analysis is carried out over a distribution test system

Pota, Himanshu Roy

42

Probability distribution of wave run up and dynamic response on a large volume semi-submersible  

Science Journals Connector (OSTI)

Abstract The wave run up under semi-submersible platform deck and the dynamic response are important design factors, and determine the expected minimum air gap in extreme design conditions. For a semi-submersible, the prediction of probabilities wave run up in harsh environments is a challenging task. This paper addresses the problem of expressing the probability density and cumulative distribution functions that utilize Weibull distribution to model estimates the waves run up for a large volume semi-submersible squared-section columns platform in two sea states. The two parameters Weibull distribution, namely shape parameter and scale parameter were considered. The analysis interpreted the measured data of 9 realizations with different seeds in the moored model experiments. The length of total measured data analyzed included approximately 9 times 250 waves for each sea state. The wave run up was found by model estimates using a Rayleigh distribution, and some waves run up were identical apart from one another for different seeds. Finally, by this model with a sequence return for two sea states the associated motions distribution for the large volume semi-submersible platform were numerically predicted.

A. Priyanto; A. Maimun; A.S.A. Kader; I. Nasrudin; M.P.A. Ghani; Izzudin Nur; K. Jaswar

2014-01-01T23:59:59.000Z

43

Economic and sensitivity analyses of dynamic distributed generation dispatch to reduce building energy cost  

Science Journals Connector (OSTI)

Abstract The practicality of any particular distributed generation (DG) installation depends upon its ability to reduce overall energy costs. A parametric study summarizing DG performance capabilities is developed using an economic dispatch strategy that minimizes building energy costs. Various electric rate structures are considered and applied to simulate meeting various measured building demand dynamics for heat and power. A determination of whether investment in DG makes economic sense is developed using a real-time dynamic dispatch and control strategy to meet real building demand dynamics. Under the economic dispatch strategy, capacity factor is influenced by DG electrical efficiency, operations and maintenance cost, and fuel price. Under a declining block natural gas rate structure, a large local thermal demand improves DG economics. Increasing capacity for DG that produces low cost electricity increases savings, but installing further capacity beyond the average building electrical demand reduces savings. For DG that produces high cost electricity, reducing demand charges can produce savings. Heat recovery improves capacity factor and DG economics only if thermal and electrical demand is coincident and DG heat is utilized. Potential DG economic value can be improved or impaired depending upon how the utility electricity cost is determined.

Robert J. Flores; Brendan P. Shaffer; Jacob Brouwer

2014-01-01T23:59:59.000Z

44

Adaptive and Dynamic Ant Colony Search Algorithm for Optimal Distribution Systems Reinforcement Strategy  

Science Journals Connector (OSTI)

The metaheuristic technique of Ant Colony Search has been revised here in order to deal with dynamic search optimization problems having a large search space and mixed integer variables. The problem to which it has been applied is an electrical distribution ... Keywords: ant colony search, dynamic optimization problems, electrical distribution systems

S. Favuzza; G. Graditi; E. Riva Sanseverino

2006-02-01T23:59:59.000Z

45

ROSA: Distributed Joint Routing and Dynamic Spectrum Allocation in Cognitive Radio Ad Hoc Networks  

E-Print Network [OSTI]

ROSA: Distributed Joint Routing and Dynamic Spectrum Allocation in Cognitive Radio Ad Hoc Networks opportunistic spectrum access and dynamic routing algorithm for cognitive radio networks is proposed, called Keywords Cognitive Radio Networks, routing, dynamic spectrum allocation, cross-layer design 1. INTRODUCTION

Melodia, Tommaso

46

ReDAC Dynamic Reconfiguration of Distributed Component-Based Applications with Cyclic Dependencies  

Science Journals Connector (OSTI)

This paper introduces ReDAC, a new algorithm for dynamic reconfiguration of multi-threaded applications. In order to achieve high reliability and availability, distributed component software has to support dynamic reconfiguration. Typical examples include ... Keywords: dynamic reconfiguration, component-based development

Andreas Rasche; Andreas Polze

2008-05-01T23:59:59.000Z

47

Determination of the current density distribution in Josephson junctions.  

SciTech Connect (OSTI)

A technique is described for recovering the missing phase information for a set of critical current measurements as a function of an applied magnetic field I{sub c}(B). In many cases the current density j(x) across the boundary for a Josephson junction can be determined.

Carmody, M; Landree, E.; Marks, L. D.; Merkle, K. L.; Northwestern Univ.

1999-01-01T23:59:59.000Z

48

The Effects of Fuel Distribution, Velocity Distribution, and Fuel Composition on Static and Dynamic Instabilities and NOx Emissions in Lean Premixed Combustors  

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

Distribution, and Fuel Composition on Static and Dynamic Instabilities and NO x Emissions in Lean Premixed Combustors Principal Investigator: Domenic A. Santavicca SCIES Project 03-01-SR109 DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manager, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (7/01/03, 36 month duration) $403,777 Total Contract Value ($403,777 DOE) * Lower Emissions * Improved Static and Dynamic Stability * Fuel Versatility * Improved Design Methodology UTSR Workshop,10-18-05,DAS Gas Turbine Technology Needs * to determine the effect of combustor operating conditions on the static and dynamic stability characteristics of lean premixed combustors operating on natural gas and coal-derived syngas fuels * to develop a methodology for predicting the effect of

49

The role of naturally occurring waterholes in determining the distribution of Florida Key Deer  

E-Print Network [OSTI]

The purpose of my research was to test the hypothesis that the availability of fresh, naturally occurring water may limit the distribution of Florida Key Deer (Odocoileus virginianus clavium). More specifically, I was trying to determine...

Kim, Ji Yeon

2009-05-15T23:59:59.000Z

50

Dynamical Distribution of Capacities Strategy for Suppressing Cascading Failure in Power Grid  

Science Journals Connector (OSTI)

This paper studies the suppressing effect of Dynamical distribution of capacities (DDC) strategy in cascading failure of power grid. This strategy is proposed based on load characteristics and transmission method...

Zhi-Juan Jia; Yu Zhang; Cong Feng; Ming-Sheng Hu

2014-01-01T23:59:59.000Z

51

Robust Distributed Routing in Dynamical Networks - Part II: Strong Resilience, Equilibrium Selection and Cascaded Failures  

E-Print Network [OSTI]

Strong resilience properties of dynamical networks are analyzed for distributed routing policies. The latter are characterized by the property that the way the outflow at a non-destination node gets split among its outgoing ...

Como, Giacomo

52

Research on the Torque Dynamic Distribution Algorithm of In-Wheel-Motor Electric Vehicle  

Science Journals Connector (OSTI)

This paper focuses on developing the torque dynamic distribution algorithm of In-Wheel-Motor electric vehicle. The algorithm is developed to regulate ... the vehicle body yaw rate by changing the motor drive torq...

Zhengyi He; Yang Ou; Jingming Yuan

2013-01-01T23:59:59.000Z

53

Determination of pore-size distribution in low-dielectric thin films D. W. Gidleya)  

E-Print Network [OSTI]

-size distribution on pore shape/dimensionality and sample temperature is predicted using a simple quantum mechanicalDetermination of pore-size distribution in low-dielectric thin films D. W. Gidleya) and W. E. Frieze Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 T. L. Dull, J. Sun, and A

Gidley, David

54

The Astrophysical Journal, in press A Determination of the Coronal Emission Measure Distribution in the Young  

E-Print Network [OSTI]

to this temperature regime. We argue that the DEM distribution seen in EK Dra is induced by the propertiesThe Astrophysical Journal, in press A Determination of the Coronal Emission Measure Distribution of a coronal differential emission measure (DEM) analysis of the nearby analog of the young Sun, EK Draconis

Guedel, Manuel

55

Quantification of model mismatch errors of the dynamic energy distribution in a stirred-tank reactor  

E-Print Network [OSTI]

QUANTIFICATION OF MODEL MISMATCH ERRORS OF THE DYNAMIC ENERGY DISTRIBUTION IN A STIRRED- TANK REACTOR A Thesis by MARK RAYMOND KIMMICH Submitted to the Graduate College of Texas AkM University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August 198i Major Subject: Chemical Engineering QUANTIFICATION OF MODEL MISMATCH ERRORS OF THE DYNAMIC ENERGY DISTRIBUTION IN A STIRRED-TANK REACTOR A Thesis by MARK RAYMOND KIMMICH Approved as to style and content by...

Kimmich, Mark Raymond

1987-01-01T23:59:59.000Z

56

Parcel Manipulation and Dynamics with a Distributed Actuator Array: The Virtual Vehicle  

E-Print Network [OSTI]

Parcel Manipulation and Dynamics with a Distributed Actuator Array: The Virtual Vehicle Jonathan E. In essence, this system is an improvement over traditional conveyor systems in that objects can be re. Towards the goal of motion planning, in this paper we consider the dynamics of parcel transport

Choset, Howie

57

Distributed interface bits: dynamic dialogue composition from ambient computing resources  

Science Journals Connector (OSTI)

This paper discusses a particular issue in the context of disappearing computing, namely, user mobility. Mobile users may carry with them a variety of wireless gadgets while being immersed in a physical environment encompassing numerous computing devices. ... Keywords: Abstract dialogue elements, Adaptive interaction, Ambient dialogues, Dynamic user interface composition, Wearable interfaces

Anthony Savidis; Constantine Stephanidis

2005-05-01T23:59:59.000Z

58

On Dynamic Fragmentation of Distributed Databases Using Partial Replication  

E-Print Network [OSTI]

changing access patterns. Comisión Federal de Electricidad (CFE) is one of them that has required-master search (SMS) to reduce the search space to only two computers. 2 Problem Formulation CFE is an enterprise cannot do the payment, specially at weekends. CFE has distributed their database in regions, assuming

Pinto, David Eduardo

59

Supplementary information Tissue Specific Distribution and Dynamic Changes of 5-  

E-Print Network [OSTI]

of MspI with 5-hydroxymethylcytosine containing synthetic DNA as shown in Figure 2A. Units of MspI enzyme synthetic DNA for determination of complete cleavage. Units of enzyme used are shown at the bottom. Uncut

Jacobsen, Steve

60

Nonlinear dynamics of resonant interactions between wave packets and particle distributions with loss-cone-like structures  

SciTech Connect (OSTI)

The paper studies the nonlinear mechanisms at work in magnetized plasmas when wave packets interact resonantly with particle distributions presenting loss-cone-like structures. Lower hybrid waves are considered in view of the great importance, in space and laboratory plasmas, of waves with frequencies below the electron cyclotron frequency. Owing to a three-dimensional Hamiltonian model and a numerical symplectic code, the authors study the nonlinear stage of the loss-cone instability for various particle distributions and wave spectra involving symmetric and asymmetric features. In particular, the wave-particle interaction process of dynamical resonance merging, which results from an instability of the trapped particles' motion and leads to complex stochastic phenomena, is discussed. Whereas interactions at normal cyclotron resonances are mostly considered, the role of the Landau and the anomalous cyclotron resonances is also studied to explain thoroughly the nonlinear wave-particle dynamics as well as the competition between loss-cone, fan, and beam instabilities. The relaxed particle distributions and the saturated wave spectra are analyzed. The time necessary for filling the loss-cone structures is determined as a function of the characteristics of the particle distributions. Whereas most of the previous works analyzed the asymptotic stage of the system's evolution in the frame of the well-known quasilinear theory, the paper considers the case when the energy carried by the wave packet is sufficiently large so that the description of the physical processes at work cannot be limited to the frame of weak turbulence theories.

Krafft, C. [Laboratoire de Physique des Plasmas, Ecole Polytechnique, 91128 Palaiseau Cedex (France); Paris South University, 91405 Orsay Cedex (France); Volokitin, A. [Space Research Institute (IKI), 84/32 Profsoyuznaya Str., Moscow 117997 (Russian Federation); Zaslavsky, A. [LESIA, Observatoire de Paris, 92195 Meudon Cedex (France)

2010-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Distributed Array of GPS Receivers for 3D Wind Profile Determination in Wind Farms  

E-Print Network [OSTI]

Distributed Array of GPS Receivers for 3D Wind Profile Determination in Wind Farms Derek Chen to pursue further graduate studies. His research interests are in autonomous systems, remote sensing presentation awards at ION GNSS conferences. ABSTRACT Wind energy is currently one of the fastest growing

Gao, Grace Xingxin

62

An Energy-Aware Simulation Model and Transaction Protocol for Dynamic Workload Distribution in Mobile Ad Hoc Networks1  

E-Print Network [OSTI]

An Energy-Aware Simulation Model and Transaction Protocol for Dynamic Workload Distribution California {tari, prong, pedram}@usc.edu Abstract This paper introduces a network simulation model

Pedram, Massoud

63

Dynamical robustness of biological networks with hierarchical distribution of time scales  

E-Print Network [OSTI]

]. Networks of regulating micro-RNA could be key players in canalising genetic developmental programmes [15Dynamical robustness of biological networks with hierarchical distribution of time scales A, the robustness of the relax- ation time using a chemical reaction description of genetic and signalling networks

Radulescu, Ovidiu

64

Modeling the Complex Dynamics of Distributed Communities of the Web with Pretopology  

E-Print Network [OSTI]

Modeling the Complex Dynamics of Distributed Communities of the Web with Pretopology Vincent analysis of web communities. This approach is based upon the pretopological concepts of pseudoclosure through the actual limits of graph theory modeling. The problem of modeling and understanding web

65

Capacity Limits of Cognitive Radio with Distributed and Dynamic Spectral Activity  

E-Print Network [OSTI]

Cognitive radio technology has tremendous potential for improving the utilization of radio spectrum. Derived that are licensed to their primary users [2]. It is driven by software defined radio technology whichCapacity Limits of Cognitive Radio with Distributed and Dynamic Spectral Activity Syed Ali Jafar

Jafar, Syed A.

66

Locality-Preserving Dynamic Load Balancing for Data-Parallel Applications on Distributed-Memory Multiprocessors  

E-Print Network [OSTI]

Locality-Preserving Dynamic Load Balancing for Data-Parallel Applications on Distributed Chung Cheng University, Chiayi, Taiwan, R.O.C. pangfeng@cs.ccu.edu.tw Abstract Load balancing and data the load balancing prob- lem of data-parallel loops with predictable neigh- borhood data references

Liu, Pangfeng

67

White pine (Pinus strobus L.) regeneration dynamics at the species' northern limit of continuous distribution  

E-Print Network [OSTI]

White pine (Pinus strobus L.) regeneration dynamics at the species' northern limit of continuous white pine (Pinus strobus L.) has been significantly reduced across its distribution range over the past quantified natural white pine regeneration in unmanaged mature stands, identified the most important

Asselin, Hugo

68

ReDAC -Dynamic Reconfiguration of distributed component-based applications with cyclic dependencies  

E-Print Network [OSTI]

ReDAC - Dynamic Reconfiguration of distributed component-based applications with cyclic, Germany {andreas.rasche|andreas.polze}@hpi.uni-potsdam.de Abstract This paper introduces ReDAC, a new reconfiguration. Typical examples include the application of hot-fixes to deal with security vulnera- bilities. ReDAC

Weske, Mathias

69

Experimental Determination of the Gain Distribution of an Avalanche Photodiode at Low Gains  

E-Print Network [OSTI]

A measurement system for determining the gain distributions of avalanche photodiodes (APDs) in a low gain range is presented. The system is based on an ultralow-noise charge--sensitive amplifier and detects the output carriers from an APD. The noise of the charge--sensitive amplifier is as low as 4.2 electrons at a sampling rate of 200 Hz. The gain distribution of a commercial Si APD with low average gains are presented, demonstrating the McIntyre theory in the low gain range.

Kenji Tsujino; Makoto Akiba; Masahide Sasaki

2008-12-04T23:59:59.000Z

70

Dynamic Control of Electricity Cost with Power Demand Smoothing and Peak Shaving for Distributed Internet Data Centers  

E-Print Network [OSTI]

Dynamic Control of Electricity Cost with Power Demand Smoothing and Peak Shaving for Distributed a major part of their running costs. Modern electric power grid provides a feasible way to dynamically and efficiently manage the electricity cost of distributed IDCs based on the Locational Marginal Pricing (LMP

Rahman, A.K.M. Ashikur

71

Determination of desorption efficiency utilizing direct injection: a dynamic calibration system and phase equilibrium  

E-Print Network [OSTI]

) Ronald H. Williams B. S. , Purdue University B. S. , University of Arkansas Chairman of Advisory Committee: Dr . R. B. Konzen Three methods for determining desorption efficiency for or ganic solvents adsorbed on activated charcoal were compared.... The three methods involved a dynamic calibra- tion system, direct injection, and phase equilibrium. The methods differed in the manner in which the analyte was placed on the adsorbent. The desorption efficiencies ob- tained using the dynamic calibration...

Williams, Ronald H

2012-06-07T23:59:59.000Z

72

Provisioning of dynamic traffic in mixed-line-rate optical networks with launch power determination  

Science Journals Connector (OSTI)

In mixed-line-rate (MLR) networks, different line rates on different wavelengths can coexist on the same fiber. MLR architectures can be built over transparent optical networks, where the transmitted signals remain in the optical domain along the entire ... Keywords: Dynamic lightpath provisioning, Impairment-aware provisioning, Launch power determination, Mixed-line-rate optical WDM networks

Haydar Cukurtepe, Massimo Tornatore, Aysegul Yayimli, Biswanath Mukherjee

2014-06-01T23:59:59.000Z

73

Determination of High-Frequency Current Distribution Using EMTP-Based Transmission Line Models with Resulting Radiated Electromagnetic Fields  

SciTech Connect (OSTI)

Application of BPL technologies to existing overhead high-voltage power lines would benefit greatly from improved simulation tools capable of predicting performance - such as the electromagnetic fields radiated from such lines. Existing EMTP-based frequency-dependent line models are attractive since their parameters are derived from physical design dimensions which are easily obtained. However, to calculate the radiated electromagnetic fields, detailed current distributions need to be determined. This paper presents a method of using EMTP line models to determine the current distribution on the lines, as well as a technique for using these current distributions to determine the radiated electromagnetic fields.

Mork, B; Nelson, R; Kirkendall, B; Stenvig, N

2009-11-30T23:59:59.000Z

74

Determination of Non-thermal Velocity Distributions from SERTS Linewidth Observations  

Science Journals Connector (OSTI)

Non-thermal velocities obtained from the measurement of coronal Extreme Ultraviolet (EUV) linewidths have been consistently observed in solar EUV spectral observations and have been theorized to result from many plausible scenarios including wave motions, turbulence, or magnetic reconnection. Constraining these velocities can provide a physical limit for the available energy resulting from unresolved motions in the corona. We statistically determine a series of non-thermal velocity distributions from linewidth measurements of 390 emission lines from a wide array of elements and ionization states observed during the Solar Extreme Ultraviolet Research Telescope and Spectrograph 1991-1997 flights covering the spectral range 174-418 and a temperature range from 80,000K to 12.6MK. This sample includes 248 lines from active regions, 101 lines from quiet-Sun regions, and 41 lines were observed from plasma off the solar limb. We find a strongly peaked distribution corresponding to a non-thermal velocity of 19-22kms1 in all three of the quiet-Sun, active region, and off-limb distributions. For the possibility of Alfvn wave resonance heating, we find that velocities in the core of these distributions do not provide sufficient energy, given typical densities and magnetic field strengths for the coronal plasma, to overcome the estimated coronal energy losses required to maintain the corona at the typical temperatures working as the sole mechanism. We find that at perfect efficiency 50%-60% of the needed energy flux can be produced from the non-thermal velocities measured.

Aaron J. Coyner; Joseph M. Davila

2011-01-01T23:59:59.000Z

75

DETERMINATION OF NON-THERMAL VELOCITY DISTRIBUTIONS FROM SERTS LINEWIDTH OBSERVATIONS  

SciTech Connect (OSTI)

Non-thermal velocities obtained from the measurement of coronal Extreme Ultraviolet (EUV) linewidths have been consistently observed in solar EUV spectral observations and have been theorized to result from many plausible scenarios including wave motions, turbulence, or magnetic reconnection. Constraining these velocities can provide a physical limit for the available energy resulting from unresolved motions in the corona. We statistically determine a series of non-thermal velocity distributions from linewidth measurements of 390 emission lines from a wide array of elements and ionization states observed during the Solar Extreme Ultraviolet Research Telescope and Spectrograph 1991-1997 flights covering the spectral range 174-418 A and a temperature range from 80,000 K to 12.6 MK. This sample includes 248 lines from active regions, 101 lines from quiet-Sun regions, and 41 lines were observed from plasma off the solar limb. We find a strongly peaked distribution corresponding to a non-thermal velocity of 19-22 km s{sup -1} in all three of the quiet-Sun, active region, and off-limb distributions. For the possibility of Alfven wave resonance heating, we find that velocities in the core of these distributions do not provide sufficient energy, given typical densities and magnetic field strengths for the coronal plasma, to overcome the estimated coronal energy losses required to maintain the corona at the typical temperatures working as the sole mechanism. We find that at perfect efficiency 50%-60% of the needed energy flux can be produced from the non-thermal velocities measured.

Coyner, Aaron J. [Department of Physics, Catholic University of America, 620 Michigan Avenue, Washington, DC 20064 (United States); Davila, Joseph M., E-mail: aaron.j.coyner@nasa.gov [Code 671, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2011-12-01T23:59:59.000Z

76

A Computational Method for Determining Distributed Aerodynamic Loads on Planforms of Arbitrary Shape in Compressible Subsonic Flow  

E-Print Network [OSTI]

The methods presented in this work are intended to provided an easy to understand and easy to apply method for determining the distributed aerodynamic loads and aerodynamic characteristics of planforms of nearly arbitrary shape. Through application...

Brown, Matthew Alan

2013-12-31T23:59:59.000Z

77

Automated Data Collection for Determining Statistical Distributions of Module Power Undergoing Potential-Induced Degradation: Preprint  

SciTech Connect (OSTI)

We propose a method for increasing the frequency of data collection and reducing the time and cost of accelerated lifetime testing of photovoltaic modules undergoing potential-induced degradation (PID). This consists of in-situ measurements of dark current-voltage curves of the modules at elevated stress temperature, their use to determine the maximum power at 25 degrees C standard test conditions (STC), and distribution statistics for determining degradation rates as a function of stress level. The semi-continuous data obtained by this method clearly show degradation curves of the maximum power, including an incubation phase, rates and extent of degradation, precise time to failure, and partial recovery. Stress tests were performed on crystalline silicon modules at 85% relative humidity and 60 degrees C, 72 degrees C, and 85 degrees C. Activation energy for the mean time to failure (1% relative) of 0.85 eV was determined and a mean time to failure of 8,000 h at 25 degrees C and 85% relative humidity is predicted. No clear trend in maximum degradation as a function of stress temperature was observed.

Hacke, P.; Spataru, S.

2014-08-01T23:59:59.000Z

78

Dynamic Windowing Algorithm for the Fast and Accurate Determination of Luminescence Lifetimes  

Science Journals Connector (OSTI)

Dynamic Windowing Algorithm for the Fast and Accurate Determination of Luminescence Lifetimes ... The window size is initially set to a small value so that a maximum window change is only used for increases in window width. ... From the simulated response profile (Figure 6), all of the methods appear to be very accurate at low oxygen concentrations: that is when the windows are able to cover most of the decay. ...

Bradley B. Collier; Michael J. McShane

2012-04-17T23:59:59.000Z

79

Ignition quality determination of diesel fuels from hydrogen type distribution of hydrocarbons  

SciTech Connect (OSTI)

Hydrogen types of diesel like hydrocarbon fuels which have dominant effect on the ignition quality have been identified. A scheme of characterizing the chemistry of hydrocarbon fuels in terms of these hydrogen types using proton nuclear resonance spectrometry has been proposed. Using this analysis technique on 70 different diesel fuels, whose cetane numbers were determined on a number of standard cetane rating engines, an empirical expression which relates the ignition quality to the hydrogen type distribution of the fuels has been developed. The developed expression and the relationship between the ignition delay and cetane number imply that the effective activation energy term in the usual semiempirical ignition delay expression is not a constant for a given fuel but is a function of pressure and temperature as well as the fuel chemistry.

Gulder, O.L.; Glavincevski, B.

1986-02-01T23:59:59.000Z

80

Lateral distribution and the energy determination of showers along the ankle  

E-Print Network [OSTI]

The normalization constant of the lateral distribution function (LDF) of an extensive air shower is a monotonous (almost linear) increasing function of the energy of the primary. Therefore, the interpolated signal at some fixed distance from the core can be calibrated to estimate the energy of the shower. There is, somehow surprisingly, a reconstructed optimal distance, r_{opt}, at which the effects on the inferred signal, S(r_{opt}), of the uncertainties on true core location, LDF functional form and shower-to-shower fluctuations are minimized. We calculate the value of r_{opt} as a function of surface detector separation, energy and zenith angle and we demonstrate the advantage of using the r_{opt} value of each individual shower instead of a same fixed distance for every shower, specially in dealing with events with saturated stations. The effects on the determined spectrum are also shown.

G. Ros; G. A. Medina-Tanco; C. De Donato; L. del Peral; D. Rodrguez-Fras; J. C. D'Olivo; J. F. Valds-Galicia; F. Arqueros; .

2007-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Lateral distribution and the energy determination of showers along the ankle  

E-Print Network [OSTI]

The normalization constant of the lateral distribution function (LDF) of an extensive air shower is a monotonous (almost linear) increasing function of the energy of the primary. Therefore, the interpolated signal at some fixed distance from the core can be calibrated to estimate the energy of the shower. There is, somehow surprisingly, a reconstructed optimal distance, r_{opt}, at which the effects on the inferred signal, S(r_{opt}), of the uncertainties on true core location, LDF functional form and shower-to-shower fluctuations are minimized. We calculate the value of r_{opt} as a function of surface detector separation, energy and zenith angle and we demonstrate the advantage of using the r_{opt} value of each individual shower instead of a same fixed distance for every shower, specially in dealing with events with saturated stations. The effects on the determined spectrum are also shown.

Ros, G; De Donato, C; Del Peral, L; Rodrguez-Fras, D; D'Olivo, J C; Valds-Galicia, J F; Arqueros, F

2007-01-01T23:59:59.000Z

82

Using rf impedance probe measurements to determine plasma potential and the electron energy distribution  

SciTech Connect (OSTI)

Earlier work has demonstrated the usefulness of a network analyzer in plasma diagnostics using spherical probes in the thin sheath limit. The rf signal applied to the probe by the network analyzer is small in magnitude compared to probe bias voltages, and the instrument returns both real and imaginary parts of the complex plasma impedance as a function of frequency for given bias voltages. This information can be used to determine sheath resistance, sheath density profiles, and a technique for measuring electron temperature. The present work outlines a method for finding plasma potential and the electron energy distribution within a limited energy range. The results are compared to those using conventional Langmuir probe techniques. The rf method has general application to diverse areas of plasma investigations when the plasma is uniform and probe dimensions are much less than the size of the plasma. These applications include laboratory and space environments.

Walker, D. N. [Global Strategies Group, Inc., Crofton, Maryland 21114 (United States); Fernsler, R. F.; Blackwell, D. D.; Amatucci, W. E. [Plasma Physics Division, Naval Research Laboratory, 4555 Overlook Ave., Washington, DC 20375 (United States)

2010-11-15T23:59:59.000Z

83

An ab initio quasi-classical direct dynamics investigation of the product energy distributionsF + C  

E-Print Network [OSTI]

An ab initio quasi-classical direct dynamics investigation of the product energy distributionsF + C at the UHF/6?31G* level of theory, was used to investigate product energy distributions of the collisionF ] C 2 H 4 ] C 2 H 3 F ] H reaction. The shifting and broadening of the product translational energy

Schlegel, H. Bernhard

84

Dynamic Heat Flow Measurements to Study the Distribution of Phase-Change Material in an Insulation Matrix  

SciTech Connect (OSTI)

Phase change materials (PCMs) are used in building envelopes in many forms. The PCMs may be encased in discrete pouches or containers, or they may be distributed within another medium, such as in a board or within a loose fill product. In addition, most PCM products are blends containing fire retardants and chemical stabilizers. However, the current test method to measure the dynamic characteristics of PCMs, the differential scanning calorimeter (DSC), requires specimens that are relatively uniform and very small. Considering the limitations of DSC test results when applied to more complex PCM building envelope applications, we developed a combined experimental analytical protocol to determine the amount of phase-change energy actually available to provide thermal storage. This paper presents this new methodology for performing dynamic heat flow analysis of complex PCM-enhanced building materials. The experimental analytical protocol uses a conventional heat-flow apparatus and three-dimensional (3-D), finite-difference modeling. Based upon results from this methodology, ORNL researchers developed a simplified one-dimensional (1-D) model that can be easily used in whole-building simulations. This paper describes this methodology as applied to an insulation assembly containing a complex array of PCM pouches.

Kosny, Jan [ORNL] [ORNL; Stovall, Therese K [ORNL] [ORNL; Yarbrough, David W [ORNL] [ORNL

2010-01-01T23:59:59.000Z

85

Molecular Dynamics Simulations of the Nucleation of Water: Determining the Sticking Probability and Formation Energy of a Cluster  

E-Print Network [OSTI]

We performed molecular dynamics (MD) simulations of the nucleation of water vapor in order to test nucleation theories. Simulations were performed for a wide range of supersaturation ratios (S = 3-25) and water temperatures (Tw=300-390K). We obtained the nucleation rates and the formation free energies of a subcritical cluster from the cluster size distribution. The classical nucleation theory (CNT) and the modified classical nucleation theory (MCNT) overestimate the nucleation rates in all cases. The semi-phenomenological (SP) model, which corrects the MCNT prediction using the second virial coefficient of a vapor, reproduces the formation free energy of a cluster with the size < 20 to within 10 % and the nucleation rate and cluster size distributions to within one order of magnitude. The sticking probability of the vapor molecules to the clusters was also determined from the growth rates of the clusters. The sticking probability rapidly increases with the supersaturation ratio S, which is similar to the Lennard-Jones system.

Kyoko K. Tanaka; Akio Kawano; Hidekazu Tanaka

2014-02-26T23:59:59.000Z

86

Muon energy-loss distribution and its applications to muon energy determination  

Science Journals Connector (OSTI)

For measurements of the cosmic-ray muon spectrum at energies above 100 TeV and for observations of high-energy astronomical neutrinos a big detector is necessary. In both cases, information on the muon energy plays an important role. The method for estimating the muon energy from the energy loss should yield accurate values with a big detector. To evaluate the method we measured the muon energy-loss distribution in the MUTRON detector and applied the results to a big detector proposed for deployment in the ocean. When estimating the muon energy we divided the muon track into several segments and discarded the segment with the maximum energy loss. If a detector with a volume of (500m)3 is constructed in the ocean using strings of detectors with 50-m spacing between adjacent strings, and 10-m spacing between detectors on a string, muon energies could be measured with a relative error of about 30%. For muons produced by the charged-current interaction (??+N??+X), the neutrino direction can be determined with an error less than 1 for muon energies above 1 TeV.

K. Mitsui

1992-05-01T23:59:59.000Z

87

DETERMINING ALL GAS PROPERTIES IN GALAXY CLUSTERS FROM THE DARK MATTER DISTRIBUTION ALONE  

SciTech Connect (OSTI)

We demonstrate that all properties of the hot X-ray emitting gas in galaxy clusters are completely determined by the underlying dark matter (DM) structure. Apart from the standard conditions of spherical symmetry and hydrostatic equilibrium for the gas, our proof is based on the Jeans equation for the DM and two simple relations which have recently emerged from numerical simulations: the equality of the gas and DM temperatures, and the almost linear relation between the DM velocity anisotropy profile and its density slope. For DM distributions described by the Navarro-Frenk-White or the Sersic profiles, the resulting gas density profile, the gas-to-total-mass ratio profile, and the entropy profile are all in good agreement with X-ray observations. All these profiles are derived using zero free parameters. Our result allows us to predict the X-ray luminosity profile of a cluster in terms of its DM content alone. As a consequence, a new strategy becomes available to constrain the DM morphology in galaxy clusters from X-ray observations. Our results can also be used as a practical tool for creating initial conditions for realistic cosmological structures to be used in numerical simulations.

Frederiksen, Teddy F.; Hansen, Steen H.; Host, Ole [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen (Denmark); Roncadelli, Marco [INFN, Sezione di Pavia, Via A. Bassi 6, 27100 Pavia (Italy)

2009-08-01T23:59:59.000Z

88

Essays on Dynamic Value Change Perspective in Resource Based View, Determinants of Alliance Formation and Risk Preference in Alliance Formation  

E-Print Network [OSTI]

ESSAYS ON DYNAMIC VALUE CHANGE PERSPECTIVE IN RESOURCE BASED VIEW, DETERMINANTS OF ALLIANCE FORMATION AND RISK PREFERENCE IN ALLIANCE FORMATION A Dissertation by IK SU JUN Submitted to the Office of Graduate Studies of Texas A...&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2009 Major Subject: Agricultural Economics ESSAYS ON DYNAMIC VALUE CHANGE PERSPECTIVE IN RESOURCE BASED VIEW, DETERMINANTS OF ALLIANCE...

Jun, Ik Su

2011-02-22T23:59:59.000Z

89

DETERMINATION OF PROMINENCE PLASMA {beta} FROM THE DYNAMICS OF RISING PLUMES  

SciTech Connect (OSTI)

Observations by the Hinode satellite show in great detail the dynamics of rising plumes, dark in chromospheric lines, in quiescent prominences that propagate from large ({approx}10 Mm) bubbles that form at the base of the prominences. These plumes present a very interesting opportunity to study magnetohydrodynamic (MHD) phenomena in quiescent prominences, but obstacles still remain. One of the biggest issues is that of the magnetic field strength, which is not easily measurable in prominences. In this paper we present a method that may be used to determine a prominence's plasma {beta} when rising plumes are observed. Using the classic fluid dynamic solution for flow around a circular cylinder with an MHD correction, the compression of the prominence material can be estimated. This has been successfully confirmed through simulations; application to a prominence gave an estimate of the plasma {beta} as {beta} = 0.47 {+-} 0.079 to 1.13 {+-} 0.080 for the range {gamma} = 1.4-1.7. Using this method it may be possible to estimate the plasma {beta} of observed prominences, therefore helping our understanding of a prominence's dynamics in terms of MHD phenomena.

Hillier, Andrew [Kwasan and Hida Observatories, Kyoto University, Kyoto (Japan); Hillier, Richard [Department of Aeronautics, Imperial College, London (United Kingdom); Tripathi, Durgesh, E-mail: andrew@kwasan.kyoto-u.ac.jp [Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007 (India)

2012-12-20T23:59:59.000Z

90

Modeling the dynamic response of pressures in a distributed helium refrigeration system  

SciTech Connect (OSTI)

A mathematical model is created of the dynamic response of pressures caused by flow inputs to an existing distributed helium refrigeration system. The dynamic system studied consists of the suction and discharge pressure headers and compressor portions of the refrigeration system used to cool the superconducting magnets of the Tevatron accelerator at the Fermi National Accelerator Laboratory. The modeling method involves identifying the system from data recorded during a series of controlled tests, with effort made to detect locational differences in pressure response around the four mile accelerator circumference. A review of the fluid mechanics associated with the system indicates linear time invariant models are suitable for the identification, particularly since the governing equations of one dimensional fluid flow are approximated by linear differential equations. An outline of the experimental design and the data acquisition system are given, followed by a detailed description of the modeling, which utilized the Matlab programming language and associated System Identification Toolbox. Two representations of the system are presented. One, a black box model, provides a multi-input, multi-output description assembled from the results of single input step function testing. This description indicates definite variation in pressure response with distance from the flow input location, and also suggests subtle differences in response with the input location itself. A second system representation is proposed which details the relation between continuous flow changes and pressure response, and provides explanation of a previously unappreciated pressure feedback internal to the system.

Brubaker, J.C.

1997-12-01T23:59:59.000Z

91

Dynamic Distributed Flow Scheduling with Load Balancing for Data Center Networks  

Science Journals Connector (OSTI)

Abstract Current Flow Scheduling techniques in Data Center Networks(DCN) results in overloaded or underutilized links. Static flow scheduling techniques such as ECMP and VLB use hashing techniques for scheduling the flows. In case of hash collision a path gets selected number of times resulting overloading of that path and underutilization of other paths. Dynamic flow scheduling techniques like global first fit employ centralized scheduler and always selects first fittest candidate path for scheduling. Thus in addition to single-point-of-failure the overall link uti- lization also remains a problem as the flows are not scheduled on the best available candidate path. This paper presents firstly a Dynamic Distributed Flow Scheduling(DDFS) mechanism that will lead to fair link utilization in globally used fat-tree topology of DCN. Secondly, it presents a mechanism to restrict the flow scheduling de- cisions to the lower layers thus avoiding saturation of core switches. The entire DCN is simulated using Colored Petri Nets (CPN). The load measured at the aggregate switches for various flow patterns in DCN reveals that the load factors at the aggregate switches vary by at most 0.11 which signifies the fair utilization of links.

Sourabh Bharti; K.K. Pattanaik

2013-01-01T23:59:59.000Z

92

DETERMINATION OF THE DISTRIBUTION AND INVENTORY OF RADIONUCLIDES WITHIN A SAVANNAH RIVER SITE WATERWAY  

SciTech Connect (OSTI)

An investigation was conducted to evaluate the radionuclide inventory within the Lower Three Runs (LTR) Integrator Operable Unit (IOU) at the U.S. Department of Energys (DOEs) Savannah River Site (SRS). The scope of this effort included the analysis of previously existing sampling and analysis data as well as additional streambed and floodplain sampling and analysis data acquired to delineate horizontal and vertical distributions of the radionuclide as part of the ongoing SRS environmental restoration program, and specifically for the LTR IOU program. While cesium-137 (Cs-137) is the most significant and abundant radionuclide associated with the LTR IOU it is not the only radionuclide, hence the scope included evaluating all radionuclides present and includes an evaluation of inventory uncertainty for use in sensitivity and uncertainty analyses. The scope involved evaluation of the radionuclide inventory in the P-Reactor and RReactor cooling water effluent canal systems, PAR Pond (including Pond C) and the floodplain and stream sediment sections of LTR between the PAR Pond Dam and the Savannah River. The approach taken was to examine all of the available Sediment and Sediment/Soil analysis data available along the P- and R-Reactor cooling water re-circulation canal system, the ponds situated along those canal reaches and along the length of LTR below Par Pond dam. By breaking the IOU into a series of sub-components and sub-sections, the mass of contaminated material was estimated and a representative central concentration of each radionuclide was computed for each compartment. The radionuclide inventory associated with each sub-compartment was then aggregated to determine the total radionuclide inventory that represented the full LTR IOU. Of special interest was the inventory of Cs-137 due to its role in contributing to the potential dose to an offsite member of the public. The overall LTR IOU inventory of Cs-137 was determined to be 75.5 Ci, which is similar to two earlier estimates. This investigation provides an independent, ground-up estimate of Cs-137 inventory in LTR IOU utilizing the most recent field data.

Hiergesell, R.; Phifer, M.

2012-11-09T23:59:59.000Z

93

A numerical technique for the determination of the pressure distribution in the presence of convective motion  

E-Print Network [OSTI]

, . . . . . . . . . , SECTION 7 SUNMARY 'Page 48 REFERENCES. APPENDIX A. APPENDIX B. 51 52 55 APPENDIX C. 61 VITA 66 LIST OF FIGURRS Figure The finite difference grid over R. . 3. The matrix T n Actual potential temperature distribution, T, fcr the hydrostatic... case. 18 40 n distribution (solid line) and 9 distribution (dashed line) for the hydrostatic case. . . . . . , . . . . C. l. Solution surface for the motion case with y=l/10. Method of storage of values in arrays F and U. . . . 45 64 LIST...

Croft, Robert Landis

2012-06-07T23:59:59.000Z

94

The density-of-states concept versus the experimentally determined distribution of activation energies  

SciTech Connect (OSTI)

Random fluctuations of localized state energies will result in thermal release of carriers trapped in those states at shorter times than would be observed from a stationary distribution of the same energies. An experimentally observed distribution of activation energies will hence differ from the distribution of average energies of the states involved. It will also be temperature-dependent. In a-Si:H, low-frequency fluctuations with a spectrum comparable to the one of 1/f noise, can account for the measured temperature dependence of the distribution. They also explain the apparent shift in localized-state energy under steady-state illumination.

Adriaenssens, G.J.; Arkhipov, V.I. [Katholieke Univ. Leuven, Heverlee-Leuven (Belgium). Lab. voor Halfgeleiderfysica

1996-12-31T23:59:59.000Z

95

Determining Space from Place for Natural History Collections: In a Distributed Digital Library Environment Search | Back Issues | Author Index | Title Index | Contents  

E-Print Network [OSTI]

Determining Space from Place for Natural History Collections: In a Distributed Digital Library Space from Place for Natural History Collections: In a Distributed Digital Library Environment Managing Number 5 ISSN 1082-9873 Determining Space from Place for Natural History Collections In a Distributed

Hardy, Christopher R.

96

Dynamics and Energy Balance of the Hadley Circulation and the Tropical Precipitation Zones. Part II: Sensitivity to Meridional SST Distribution  

Science Journals Connector (OSTI)

A series of GCM experiments is performed in order to examine the dynamics of the time-averaged distribution of precipitation and Hadley circulation in low-latitude areas. As an extension to Part I of this study, the sensitivity to the latitudinal ...

Atusi Numaguti

1995-04-01T23:59:59.000Z

97

Individual eigenvalue distributions for chGSE-chGUE crossover and determination of low-energy constants in two-color QCD+QED  

E-Print Network [OSTI]

We compute statistical distributions of individual low-lying eigenvalues of random matrix ensembles interpolating chiral Gaussian symplectic and unitary ensembles. To this aim we use the Nystrom-type discretization of Fredholm Pfaffians and resolvents of the dynamical Bessel kernel containing a single crossover parameter \\rho. The \\rho-dependent distributions of the four smallest eigenvalues are then used to fit the Dirac spectra of modulated SU(2) lattice gauge theory, in which the reality of the staggered SU(2) Dirac operator is weakly violated either by the U(1) gauge field or by a constant background flux. Combined use of individual eigenvalue distributions is effective in reducing statistical errors in \\rho; its linear dependence on the imaginary chemical potential \\mu_I enables precise determination of the pseudo-scalar decay constant F of the SU(2) gauge theory from a small lattice. The U(1)-coupling dependence of an equivalent of F^2 \\mu_I^2 in the SU(2) x U(1) theory is also obtained.

Nishigaki, Shinsuke M

2015-01-01T23:59:59.000Z

98

Application of the Grillage Methodology to Determine Load Distribution Factors for Spread Slab Beam Bridges  

E-Print Network [OSTI]

Transverse load distribution behavior amongst bridge girders is influenced by many parameters including girder material properties, spacing, skew, deck design, and stiffening element interactions. In order to simply and conservatively approximate...

Petersen-Gauthier, Joel

2013-08-09T23:59:59.000Z

99

The uncertainties due to quark energy loss on determining nuclear sea quark distribution from nuclear Drell-Yan data  

E-Print Network [OSTI]

By means of two different parametrizations of quark energy loss and the nuclear parton distributions determined only with lepton-nuclear deep inelastic scattering experimental data, a leading order phenomenological analysis is performed on the nuclear Drell-Yan differential cross section ratios as a function of the quark momentum fraction in the beam proton and target nuclei for E772 experimental data. It is shown that there is the quark energy loss effect in nuclear Drell-Yan process apart from the nuclear effects on the parton distribution as in deep inelastic scattering. The uncertainties due to quark energy loss effect is quantified on determining nuclear sea quark distribution by using nuclear Drell-Yan data. It is found that the quark energy loss effect on nuclear Drell-Yan cross section ratios make greater with the increase of quark momentum fraction in the target nuclei. The uncertainties from quark energy loss become bigger as the nucleus A come to be heavier. The Drell-Yan data on proton incident middle and heavy nuclei versus deuterium would result in an overestimate for nuclear modifications on sea quark distribution functions with neglecting the quark energy loss. Our results are hoped to provide good directional information on the magnitude and form of nuclear modifications on sea quark distribution functions by means of the nuclear Drell-Yan experimental data.

C. G. Duan; N. Liu; G. L. Li

2008-11-05T23:59:59.000Z

100

Complex dynamics of an oscillator ensemble with uniformly distributed natural frequencies and global nonlinear coupling  

Science Journals Connector (OSTI)

We consider large populations of phase oscillators with global nonlinear coupling. For identical oscillators such populations are known to demonstrate a transition from completely synchronized state to the state of self-organized quasiperiodicity. In this state phases of all units differ, yet the population is not completely incoherent but produces a nonzero mean field; the frequency of the latter differs from the frequency of individual units. Here we analyze the dynamics of such populations in case of uniformly distributed natural frequencies. We demonstrate numerically and describe theoretically (i) states of complete synchrony, (ii) regimes with coexistence of a synchronous cluster and a drifting subpopulation, and (iii) self-organized quasiperiodic states with nonzero mean field and all oscillators drifting with respect to it. We analyze transitions between different states with the increase of the coupling strength; in particular we show that the mean field arises via a discontinuous transition. For a further illustration we compare the results for the nonlinear model with those for the Kuramoto-Sakaguchi model.

Yernur Baibolatov; Michael Rosenblum; Zeinulla Zh. Zhanabaev; Arkady Pikovsky

2010-07-19T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Supplement to the ``determination analysis`` (ORNL-6847) and analysis of the NEMA efficiency standard for distribution transformers  

SciTech Connect (OSTI)

This report contains additional information for use by the US Department of Energy in making a determination on proposing energy conservation standards for distribution transformers as required by the Energy Policy Act of 1992. An earlier determination study by the Oak Ridge National Laboratory determined that cost-effective, technically feasible energy savings could be achieved by distribution transformer standards and that these savings are significant relative to other product conservation standards. This study was documented in a final report, ``Determination Analysis of Energy Conservation Standards for Distribution Transformers`` (ORNL-6847, July 1996). The energy conservation options analyzed in this study were estimated to save 5.2 to 13.7 quads from 2000--2030. The energy savings for the determination study cases have been revised downward for a number of reasons. The transformer market, both present and future, was overestimated in the previous study, particularly for dry-type transformers, which have the greatest energy-saving potential. Moreover, a revision downwards of the effective annual loads for utility owned transformers also results in lower energy savings. The present study assesses four of the five conservation cases from the earlier determination study as well as the National Electrical Manufacturers Association energy efficiency standard NEMA TP 1-1996 using the updated data and a more accurate disaggregated analysis model. According to these new estimates, the savings ranged from 2.5 to 10.7 quads of primary energy for the 30-year period 2004 to 2034. For the TP-1 case, data were available to calculate the payback period required to recover the extra cost from the value of the energy saved. The average payback period based on the average national cost of electricity is 2.76 years. 15 figs., 23 tabs.

Barnes, P.R.; Das, S.; McConnell, B.W.; Van Dyke, J.W.

1997-09-01T23:59:59.000Z

102

Determination of the interaction potential from the pair distribution function: An inverse Monte Carlo technique  

Science Journals Connector (OSTI)

In this work we present an efficient procedure to evaluate effective pair potentials compatible with experimental distribution functions using a Monte Carlo simulation scheme. Using computer simulation results for the pair distribution functions, we have applied the method to a Lennard-Jones fluid and to a model of liquid aluminum. In both cases the procedure was able to recover with high accuracy the actual interaction potential of the systems. Moreover, the procedure can easily incorporate additional information, for instance, thermodynamic properties, in order to improve the reliability of the results.

N. G. Almarza and E. Lomba

2003-07-03T23:59:59.000Z

103

On the degree distribution of horizontal visibility graphs associated to Markov processes and dynamical systems: diagrammatic and variational approaches  

E-Print Network [OSTI]

Dynamical processes can be transformed into graphs through a family of mappings called visibility algorithms, enabling the possibility of (i) making empirical data analysis and signal processing and (ii) characterising classes of dynamical systems and stochastic processes using the tools of graph theory. Recent works show that the degree distribution of these graphs encapsulates much information on the signals variability, and therefore constitutes a fundamental feature for statistical learning purposes. However, exact solutions for the degree distributions are only known in a few cases, such as for uncorrelated random processes. Here we analytically explore these distributions in a list of situations. We present a diagrammatic formalism which computes for all degrees their corresponding probability as a series expansion in a coupling constant which is the number of hidden variables. We offer a constructive solution for general Markovian stochastic processes and deterministic maps. As case tests we focus on Ornstein-Uhlenbeck processes, fully chaotic and quasiperiodic maps. Whereas only for certain degree probabilities can all diagrams be summed exactly, in the general case we show that the perturbation theory converges. In a second part, we make use of a variational technique to predict the complete degree distribution for special classes of Markovian dynamics with fast-decaying correlations. In every case we compare the theory with numerical experiments.

Lucas Lacasa

2014-02-21T23:59:59.000Z

104

Calculation of the distribution of eigenvalues and eigenvectors in Markovian state models for molecular dynamics  

E-Print Network [OSTI]

such as Folding@Home.1 After generating large ensembles of molecular dynamics simulations, we wish to analyze

Hinrichs, Nina Singhal

105

A study to determine the most effective actuation valve and water distribution head combination for emergency showers  

E-Print Network [OSTI]

for corrosion and wear. Pressure test to determine strength. (5) Remove shower head and dismantle. Clean scale and rust, from the head inlet and from the slots or orifices in the baffle plate. (6) Reassemble. (7) Open OSBY valve and replace seal..., and orifice sprinkler water distribution heads to determine which valve/head combination produced the greatest flow rate at varying static water pressures. Flow rates were measured at static pressures of 20, 30. 40, 50, and 60 pounds per square inch gauge...

Presswood, James Columbus

1977-01-01T23:59:59.000Z

106

Dynamic determination of vessel speed and selection of bunkering ports for liner shipping under stochastic environment  

Science Journals Connector (OSTI)

We obtain the speed and refueling decisions given by the stationary model, direct solving of the dynamic model and dynamic model solved by the modified rolling horizon approach, respectively, under all three cases

Xiaoming Sheng; Loo Hay Lee; Ek Peng Chew

2014-03-01T23:59:59.000Z

107

Computing leakage current distributions and determination of minimum leakage vectors for combinational designs  

E-Print Network [OSTI]

approach to determine and implicitly represent the leakage value for all input vectors of a combinational circuit is presented. In its exact form, this technique can compute the leakage value of each input vector, by storing these leakage values implicitly...

Gulati, Kanupriya

2006-08-16T23:59:59.000Z

108

System for tomographic determination of the power distribution in electron beams  

DOE Patents [OSTI]

A tomographic technique is disclosed for measuring the current density distribution in electron beams using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams. The modified Faraday cup includes a narrow slit and is rotated by a stepper motor and can be moved in the x, y and z directions. The beam is swept across the slit perpendicular thereto and controlled by deflection coils, and the slit rotated such that waveforms are taken every few degrees form 0[degree] to 360[degree] and the waveforms are recorded by a digitizing storage oscilloscope. Two-dimensional and three-dimensional images of the current density distribution in the beam can be reconstructed by computer tomography from this information, providing quantitative information about the beam focus and alignment. 12 figures.

Elmer, J.W.; Teruya, A.T.; O'Brien, D.W.

1995-01-17T23:59:59.000Z

109

System for tomographic determination of the power distribution in electron beams  

DOE Patents [OSTI]

A tomographic technique for measuring the current density distribution in electron beams using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams. The modified Faraday cup includes a narrow slit and is rotated by a stepper motor and can be moved in the x, y and z directions. The beam is swept across the slit perpendicular thereto and controlled by deflection coils, and the slit rotated such that waveforms are taken every few degrees form 0.degree. to 360.degree. and the waveforms are recorded by a digitizing storage oscilloscope. Two-dimensional and three-dimensional images of the current density distribution in the beam can be reconstructed by computer tomography from this information, providing quantitative information about the beam focus and alignment.

Elmer, John W. (Pleasanton, CA); Teruya, Alan T. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1995-01-01T23:59:59.000Z

110

System for tomographic determination of the power distribution in electron beams  

DOE Patents [OSTI]

A tomographic technique for measuring the current density distribution in electron beams using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams. The modified Faraday cup includes a narrow slit and is rotated by a stepper motor and can be moved in the x, y and z directions. The beam is swept across the slit perpendicular thereto and controlled by deflection coils, and the slit rotated such that waveforms are taken every few degrees form 0{degree} to 360{degree} and the waveforms are recorded by a digitizing storage oscilloscope. Two-dimensional and three-dimensional images of the current density distribution in the beam can be reconstructed by computer tomography from this information, providing quantitative information about the beam focus and alignment. 12 figs.

Elmer, J.W.; Teruya, A.T.; O`Brien, D.W.

1995-11-21T23:59:59.000Z

111

The development of MRI for the determination of porosity distribution in reservoir core samples  

E-Print Network [OSTI]

scale porosity distributions. The existence of similarities between the different scales may indicate that porosity follows a fractal geometry. A key feature of fractals is their resemblance at various scales. I If evidence could be found... that the porosity does indeed follow a fractal geometry, this knowledge could be used to improve reservoir estimation procedures. & 2 Foot by foot porosity data was obtained using a Helium porosimeter for a three hundred foot vertical section of whole core...

Shivers, Jon Blake

2012-06-07T23:59:59.000Z

112

Globally Distributed Engineering Teams in Computational Fluid Dynamics and in Product Development  

E-Print Network [OSTI]

, experimental research on idea generation methods used in globally distributed teams during the conceptual design phase of the product development process is presented. An experimental study simulating the global distribution of a three person Computational...

Schmidt, Susanne R.

2010-10-12T23:59:59.000Z

113

Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by Dynamic Neutron Radiography  

Broader source: Energy.gov [DOE]

Quantitative analysis of the soot loading and soot distribution for Cordierite type DPFs are studied under controlled conditions.

114

Distribution:  

Office of Legacy Management (LM)

JAN26 19% JAN26 19% Distribution: OR00 Attn: h.H.M.Roth DFMusser ITMM MMMann INS JCRyan FIw(2) Hsixele SRGustavson, Document rocm Formal file i+a@mmm bav@ ~@esiaw*cp Suppl. file 'Br & Div rf's s/health (lic.only) UNITED STATES ATOMIC ENERGY COMMISSION SPECIAL NUCLEAB MATERIAL LICENSE pursuant to the Atomic Energy Act of 1954 and Title 10, Code of Federal Regulations, Chapter 1, P&t 70, "Special Nuclear Material Reg)llatiqm," a license is hereby issued a$hortztng the licensee to rekeive and possess the special nuclear material designated below; to use such special nuclear mat&ial for the purpose(s) and at the place(s) designated below; and to transfer such material to per&s authorized to receive it in accordance with the regula,tions in said Part.

115

Experimental determination of the angular distribution of transition radiation following photoeffect  

Science Journals Connector (OSTI)

Theoretical considerations led to the prediction that the transition radiation following inner-shell photoionization has an angular dependence I(?)?1+?P2(cos?). The asymmetry parameter ? was determined experimentally for the L-III transitions (Ll and L?) of uranium. A comparison with the calculations of Scofield indicates that the measured asymmetry (Ll=0.062) is 40% greater than predicted. Our experiment was not sensitive enough to detect asymmetry in the L? radiation.

R. J. Grader, A. J. Oliver, and P. J. Ebert

1977-12-01T23:59:59.000Z

116

Dynamic Service Placement in Geographically Distributed Clouds Qi Zhang, Quanyan Zhu, Mohamed Faten Zhani, Raouf Boutaba  

E-Print Network [OSTI]

performance requirements (e.g. response time) are assured. Furthermore, the dynamic nature of both demand the desired objective dynamically over time according to both demand and resource price fluctuations. We on realistic topologies, demand and resource prices, we demonstrate the effectiveness of our solution

Boutaba, Raouf

117

Policy Building Blocks: Helping Policymakers Determine Policy Staging for the Development of Distributed PV Markets: Preprint  

SciTech Connect (OSTI)

There is a growing body of qualitative and a limited body of quantitative literature supporting the common assertion that policy drives development of clean energy resources. Recent work in this area indicates that the impact of policy depends on policy type, length of time in place, and economic and social contexts of implementation. This work aims to inform policymakers about the impact of different policy types and to assist in the staging of those policies to maximize individual policy effectiveness and development of the market. To do so, this paper provides a framework for policy development to support the market for distributed photovoltaic systems. Next steps include mathematical validation of the framework and development of specific policy pathways given state economic and resource contexts.

Doris, E.

2012-04-01T23:59:59.000Z

118

Method and apparatus for determining the content and distribution of a thermal neutron absorbing material in an object  

DOE Patents [OSTI]

The disclosure is directed to an apparatus and method for determining the content and distribution of a thermal neutron absorbing material within an object. Neutrons having an energy higher than thermal neutrons are generated and thermalized. The thermal neutrons are detected and counted. The object is placed between the neutron generator and the neutron detector. The reduction in the neutron flux corresponds to the amount of thermal neutron absorbing material in the object. The object is advanced past the neutron generator and neutron detector to obtain neutron flux data for each segment of the object. The object may comprise a space reactor heat pipe and the thermal neutron absorbing material may comprise lithium.

Crane, T.W.

1983-12-21T23:59:59.000Z

119

Method and apparatus for determining the content and distribution of a thermal neutron absorbing material in an object  

DOE Patents [OSTI]

The disclosure is directed to an apparatus and method for determining the content and distribution of a thermal neutron absorbing material within an object. Neutrons having an energy higher than thermal neutrons are generated and thermalized. The thermal neutrons are detected and counted. The object is placed between the neutron generator and the neutron detector. The reduction in the neutron flux corresponds to the amount of thermal neutron absorbing material in the object. The object is advanced past the neutron generator and neutron detector to obtain neutron flux data for each segment of the object. The object may comprise a space reactor heat pipe and the thermal neutron absorbing material may comprise lithium.

Crane, Thomas W. (Los Alamos, NM)

1986-01-01T23:59:59.000Z

120

Applications of radon distribution and radon flux for the determination of oceanic mixing and air-sea gas exchange  

E-Print Network [OSTI]

APPLICATIONS OF RADON DISTRIBUTION AND RADON FLUX FOR THE DETERS 1INATION Ol OCEANIC IvfIXING AND AIR -SEA GAS EXCHA NGE A Thesis by ROBERT I. EWIS BREWER Submitted to the Graduate College oi T e xa s A '4 I'. 1 Univ c r s i ty in partial... luiiillment of the requirement for the degree of KIASTER OF SCIENCE May 1977 Major Subject: Oceanography APPLICATIONS OF RADON DIS TBIBUTION AND RADON FLUX FOR THE DETERMINATION OF OCEANIC MIXING A ND AIR ? SEA GAS EXCIdA NGE A Thesis by ROBERT LEWIS...

Brewer, Robert Lewis

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Standard for the determination of steady-state neutron reaction-rate distributions and reactivity of nuclear power reactors  

SciTech Connect (OSTI)

American National Standard ANSI/ANS*-19.3-2005 [1] covers 'The Determination of Steady-State Neutron Reaction-Rate Distributions and Reactivity of Nuclear Power Reactors'. The 2005 version is a new revision of this Standard, which had previously been issued in 1995. In this revision, the sections on the various types of power reactors have been updated to cover the latest methodologies of calculation in current use, and a section on HWR [CANDU{sup R}] reactors has been added. Also, the sections on verification and validation were revised to more fully define, discuss, and distinguish between these topics, and describe actions related to them. (authors)

Rouben, B. [Atomic Energy of Canada Limited, 2251 Speakman Drive, Mississauga, Ont. L5K 1B2 (Canada)

2006-07-01T23:59:59.000Z

122

An evaluation of invertebrate dynamics in a drinking water distribution system: a South African perspective .  

E-Print Network [OSTI]

??The occurrence of invertebrates in drinking water supplies is a common consumer complaint with studies showing that very few drinking water distribution networks are totally (more)

Shaddock, Bridget

2008-01-01T23:59:59.000Z

123

Scaling of distributions of sums of positions for chaotic dynamics at band-splitting points  

E-Print Network [OSTI]

The stationary distributions of sums of positions of trajectories generated by the logistic map have been found to follow a basic renormalization group (RG) structure: a nontrivial fixed-point multi-scale distribution at the period-doubling onset of chaos and a Gaussian trivial fixed-point distribution for all chaotic attractors. Here we describe in detail the crossover distributions that can be generated at chaotic band-splitting points that mediate between the aforementioned fixed-point distributions. Self affinity in the chaotic region imprints scaling features to the crossover distributions along the sequence of band splitting points. The trajectories that give rise to these distributions are governed first by the sequential formation of phase-space gaps when, initially uniformly-distributed, sets of trajectories evolve towards the chaotic band attractors. Subsequently, the summation of positions of trajectories already within the chaotic bands closes those gaps. The possible shapes of the resultant distributions depend crucially on the disposal of sets of early positions in the sums and the stoppage of the number of terms retained in them.

Alvaro Diaz-Ruelas; Miguel Angel Fuentes; Alberto Robledo

2014-09-26T23:59:59.000Z

124

Trigger probe for determining the orientation of the power distribution of an electron beam  

DOE Patents [OSTI]

The present invention relates to a probe for determining the orientation of electron beams being profiled. To accurately time the location of an electron beam, the probe is designed to accept electrons from only a narrowly defined area. The signal produced from the probe is then used as a timing or triggering fiducial for an operably coupled data acquisition system. Such an arrangement eliminates changes in slit geometry, an additional signal feedthrough in the wall of a welding chamber and a second timing or triggering channel on a data acquisition system. As a result, the present invention improves the accuracy of the resulting data by minimizing the adverse effects of current slit triggering methods so as to accurately reconstruct electron or ion beams.

Elmer, John W. (Danville, CA); Palmer, Todd A. (Livermore, CA); Teruya, Alan T. (Livermore, CA)

2007-07-17T23:59:59.000Z

125

From Balanced Initial Occupant Distribution to Balanced Exit Usage in a Simulation Model of Pedestrian Dynamics  

E-Print Network [OSTI]

It is tested in this contribution if and to which extend a method of a pedestrian simulation tool that attempts to make pedestrians walk into the direction of estimated earliest arrival can help to automatically distribute pedestrians - who are initially distributed arbitrarily in the scenario - equally on the various exits of the scenario.

Kretz, Tobias

2012-01-01T23:59:59.000Z

126

Determination of the Dynamic Characteristics in the CO Transient Process in a PEM Fuel Cell Woo-kum Lee and J. W. Van Zee  

E-Print Network [OSTI]

Determination of the Dynamic Characteristics in the CO Transient Process in a PEM Fuel Cell Woo Road, Elkton, MD 21922-1488 Key words: PEM Fuel Cell, CO transient, Time constant Prepared publications #12;1 Determination of the Dynamic Characteristics in the CO Transient Process in a PEM Fuel Cell

Van Zee, John W.

127

A Parallel Tree code for large Nbody simulation: dynamic load balance and data distribution on CRAY T3D system  

E-Print Network [OSTI]

N-body algorithms for long-range unscreened interactions like gravity belong to a class of highly irregular problems whose optimal solution is a challenging task for present-day massively parallel computers. In this paper we describe a strategy for optimal memory and work distribution which we have applied to our parallel implementation of the Barnes & Hut (1986) recursive tree scheme on a Cray T3D using the CRAFT programming environment. We have performed a series of tests to find an " optimal data distribution " in the T3D memory, and to identify a strategy for the " Dynamic Load Balance " in order to obtain good performances when running large simulations (more than 10 million particles). The results of tests show that the step duration depends on two main factors: the data locality and the T3D network contention. Increasing data locality we are able to minimize the step duration if the closest bodies (direct interaction) tend to be located in the same PE local memory (contiguous block subdivison, high granularity), whereas the tree properties have a fine grain distribution. In a very large simulation, due to network contention, an unbalanced load arises. To remedy this we have devised an automatic work redistribution mechanism which provided a good Dynamic Load Balance at the price of an insignificant overhead.

U. Becciani; R. Ansaloni; V. Antonuccio-Delogu; G. Erbacci; M. Gambera; A. Pagliaro; -

1997-09-02T23:59:59.000Z

128

Quantitative Determination of Chemical Processes by Dynamic Nuclear Polarization Enhanced Nuclear Magnetic Resonance Spectroscopy  

E-Print Network [OSTI]

Dissolution dynamic nuclear polarization (DNP) provides several orders of magnitude of NMR signal enhancement by converting the much larger electron spin polarization to nuclear spin polarization. Polarization occurs at low temperature (1.4K...

Zeng, Haifeng

2012-07-16T23:59:59.000Z

129

Acoustic emission (AE) measurements to determine the dynamic flying characteristics of optical sliders  

Science Journals Connector (OSTI)

Flying heads carrying a magnetic coil and a ... approach to dynamically evaluate the flight attitude of flying heads in data storage is acoustic emission (AE) testing of the head/disk interaction using special gl...

Norman Muenter; Stephan Knappmann; Caspar Morsbach

2007-01-01T23:59:59.000Z

130

JET: Electricity cost-aware dynamic workload management in geographically distributed datacenters  

Science Journals Connector (OSTI)

Abstract The ever-increasing operational cost of geographically distributed datacenters has become a critical issue for cloud service providers. To cut the electricity cost of geographically distributed datacenters, several workload management schemes have been proposed. These include Electricity price-aware InteR-datacenter load balancing (EIR), which reduces the electricity cost of active servers by dispatching the workload to datacenters with lower electricity prices, and Cooling-aware IntrA-datacenter load balancing (CIA), which decreases the power consumption of a datacenter by consolidating the workload on servers with high cooling efficiency. However, these existing schemes could incur some undesired results. For example, EIR may result in high electricity cost of cooling systems due to random workload distribution in datacenters. CIA could lead to high electricity cost of active servers since it does not consider the variation of electricity prices. In this paper, we propose a joint inter- and intra-datacenter workload management scheme, Joint ElectriciTy price-aware and cooling efficiency-aware load balancing (JET), to cut the electricity cost of geographically distributed datacenters. JET uses a short processing time to calculate the optimal workload distribution, which trades off the electricity cost of active servers and cooling systems by alternately selecting the electricity prices or the efficiency of a cooling system as the dominating factor to the electricity cost of geographically distributed datacenters. Extensive evaluations show that JET outperforms the existing schemes and achieves substantial reduction in the electricity cost of geographically distributed datacenters.

Zehua Guo; Zhemin Duan; Yang Xu; H. Jonathan Chao

2014-01-01T23:59:59.000Z

131

Validation of a Fast-Fluid-Dynamics Model for Predicting Distribution of Particles with Low Stokes Number  

SciTech Connect (OSTI)

To design a healthy indoor environment, it is important to study airborne particle distribution indoors. As an intermediate model between multizone models and computational fluid dynamics (CFD), a fast fluid dynamics (FFD) model can be used to provide temporal and spatial information of particle dispersion in real time. This study evaluated the accuracy of the FFD for predicting transportation of particles with low Stokes number in a duct and in a room with mixed convection. The evaluation was to compare the numerical results calculated by the FFD with the corresponding experimental data and the results obtained by the CFD. The comparison showed that the FFD could capture major pattern of particle dispersion, which is missed in models with well-mixed assumptions. Although the FFD was less accurate than the CFD partially due to its simplification in numeric schemes, it was 53 times faster than the CFD.

Zuo, Wangda; Chen, Qingyan

2011-06-01T23:59:59.000Z

132

Use of the formula of dynamic discounted costs for determining the replacement cost of electrical energy  

Science Journals Connector (OSTI)

Determination of the replacement costs of fuel and electrical energy is of great theoretical and practical importance.

D. S. Shchavelev

1988-08-01T23:59:59.000Z

133

NEEMON Algorithm Based on Data Locality for Priority Based Dynamic Load Balancing in Distributed Database  

Science Journals Connector (OSTI)

A load balancing scheme comprises of three phases: information ... collection, decision making based on information and data migration. In distributed database, it is important to take data locality into account,...

Neera Batra; A. K. Kapil

2010-01-01T23:59:59.000Z

134

Numerical solutions of ideal quantum gas dynamical flows governed by semiclassical ellipsoidal-statistical distribution  

Science Journals Connector (OSTI)

...to cover the high-energy tail of the distribution...mass, momentum and energy, but differs from the...2000 Fundamentals of carrier transport, 2nd edn...G . 2005 Nanoscale energy transport and conversion : a parallel treatment...

2014-01-01T23:59:59.000Z

135

Solvent Dependence on Bond Length Alternation and Charge Distribution in Phenol Blue: A Car?Parrinello Molecular Dynamics Investigation  

Science Journals Connector (OSTI)

Solvent Dependence on Bond Length Alternation and Charge Distribution in Phenol Blue: A Car?Parrinello Molecular Dynamics Investigation ... (4) The probing nature of these molecules is due to the effect of the polarity of the solvation shell in changing the electron excitation energy of the indicator dye. ... (23) The usual theoretical approach to tune the bond length alternation was to apply a static electric field(20, 25) or to optimize the structure by placing sparkles (negative or positive ions) close to the donor or acceptor groups of these conjugated systems. ...

N. Arul Murugan; Zilvinas Rinkevicius; Hans gren

2009-04-02T23:59:59.000Z

136

Dynamically generated electric charge distributions in Abelian projected SU(2) lattice gauge theories  

E-Print Network [OSTI]

We show in the maximal Abelian gauge the dynamical electric charge density generated by the coset fields, gauge fixing and ghosts shows antiscreening as in the case of the non-Abelian charge. We verify that with the completion of the ghost term all contributions to flux are accounted for in an exact lattice Ehrenfest relation.

A. Hart; R. W. Haymaker; Y. Sasai

1998-08-28T23:59:59.000Z

137

Contact angle determined by spontaneous dynamic capillary rises with hydrostatic effects: Experiment and theory  

E-Print Network [OSTI]

are still a practical approach widely used to characterize such systems by measuring the rate of liquid penetration within the porous structure, due to its handleability and feasibility [8,9]. The dynamics, the contact angle may be calculated. The Lucas­Washburn equation for the penetration of a liquid

Huang, Ji-Ping

138

Determination of fault operation dynamical constraints for the design of wind turbine DFIG drives  

Science Journals Connector (OSTI)

This paper presents an efficient design tool for the estimation of the transient electromagnetic peak torque and transient rotor over-voltages of wind turbines (WT) doubly-fed induction generators (DFIG) during severe fault conditions on the grid side. ... Keywords: Dynamical constraint, Integrated design, Non-linear optimization, Wind turbine

Davide Aguglia; Philippe Viarouge; Ren Wamkeue; Jrme Cros

2010-10-01T23:59:59.000Z

139

Price Discovery in Dynamic Power Markets with Low-Voltage Distribution-Network Participants  

E-Print Network [OSTI]

. The potential of smart appliance demand response has been recognized and studied extensively under DOE funding, intertemporal scheduling of demand and optimal location signals to distributed renewable generation and last, and more. Nevertheless, mature, yet unexploited opportunities can be sought in the potential of extensive

Caramanis, Michael

140

Rate of deformation in the Pasco Basin during the Miocene as determined by distribution of Columbia River basalt flows  

SciTech Connect (OSTI)

Detailed mapping of over 8000 square kilometers and logs from 20 core holes were used to determine the distribution and thickness of basalt flows and interbeds in the Pasco Basin. The data indicate the high-MgO Grande Ronde Basalt and Wanapum Basalt thicken from the northeast to the southwest. Deformation began in late Frenchman Springs time in the Saddle Mountains along a northwest-southeast trend and in Roza time along an east-west trend. By late Wanapum time, basalt flows were more restricted on the east side. Saddle Mountains Basalt flows spread out in the basin from narrow channels to the east. The Umatilla Member entered from the southeast and is confined to the south-central basin, while the Wilbur Creek, Asotin, Esquatzel, Pomona, and Elephant Mountain Members entered from the east and northeast. The distribution of these members is controlled by flow volume, boundaries of other flows, and developing ridges. The Wilbur Creek, Asotin, and Esquatzel flows exited from the basin in a channel along the northern margin of the Umatilla flow, while the Pomona and Elephant Mountain flows exited between Umtanum Ridge and Wallula Gap. The thickness of sedimentary interbeds and basalt flows indicated subsidence and/or uplift began in post-Grande Ronde time (14.5 million years before present) and continued through Saddle Mountains time (10.5 million years before present). Maximum subsidence occurred 40 kilometers (24 miles) north of Richland, Washington with an approximate rate of 25 meters (81 feet) per million years during the eruption of the basalt. Maximum uplift along the developing ridges was 70 meters (230 feet) per million years.

Reidel, S.P.; Ledgerwood, R.K.; Myers, C.W.; Jones, M.G.; Landon, R.D.

1980-03-01T23:59:59.000Z

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141

Numerical determination of the basin of attraction for exponentially asymptotically autonomous dynamical  

E-Print Network [OSTI]

Numerical determination of the basin of attraction for exponentially asymptotically autonomous the basin of attraction for autonomous equations focus on a bounded subset of the phase space. For non-autonomous asymptotically autonomous systems, we can map the infinite time interval to a finite, compact one. The basin

Dettweiler, Michael

142

Neutron to proton mass difference, parton distribution functions and baryon resonances from dynamics on the Lie group u(3)  

E-Print Network [OSTI]

We present a hamiltonian structure on the Lie group u(3) to describe the baryon spectrum. The ground state is identified with the proton. From this single fit we calculate approximately the relative neutron to proton mass shift to within half a percentage of the experimental value. From the same fit we calculate the nucleon and delta resonance spectrum with correct grouping and no missing resonances. For specific spin eigenfunctions we calculate the delta to nucleon mass ratio to within one percent. Finally we derive parton distribution functions that compare well with those for the proton valence quarks. The distributions are generated by projecting the proton state to space via the exterior derivative on u(3). We predict scarce neutral flavour singlets which should be visible in neutron diffraction dissociation experiments or in invariant mass spectra of protons and negative pions in B-decays and in photoproduction on neutrons. The presence of such singlet states distinguishes experimentally the present model from the standard model as does the prediction of the neutron to proton mass splitting. Conceptually the Hamiltonian may describe an effective phenomenology or more radically describe interior dynamics implying quarks and gluons as projections from u(3) which we then call allospace.

Ole L. Trinhammer

2011-09-22T23:59:59.000Z

143

Light distribution in dynamic street lighting: Two experimental studies on its effects on perceived safety, prospect, concealment, and escape  

Science Journals Connector (OSTI)

The relationship between light and perceived safety at night is intuitively strong, yet theoretically and empirically its workings are largely unknown. Intelligent dynamic road lighting, which continuously adapts to the presence and behavior of users, can light the street only when and where it is needed. As such, it offers a solution to the energy waste and luminous pollution associated with conventional road lighting. With this innovation, however, new questions emerge about the effect of lighting on perceived safety. We need to consider not only how much lighting pedestrians need to feel safe, but also which parts of the street should be lit. In two experiments, we investigated the effect of different light distributions on perceived safety, and explored mediation by people's appraisal of three safety-related cues suggested in the literature: prospect (having an overview), escape (perceived escape possibilities), and refuge/concealment (perceived hiding places for offenders). Both experiments, one with stationary and one with walking participants, demonstrated that people prefer having light in their own immediate surroundings rather than on the road that lies ahead. This could be explained, partially, by changes in prospect, escape, and concealment. Against expectations, prospect was higher with lighting distributions in which participants' immediate surroundings, but not the more distant parts of the road, were most strongly lit.

Antal Haans; Yvonne A.W. de Kort

2012-01-01T23:59:59.000Z

144

Molecular dynamics studies on the NMR structures of rabbit prion protein wild-type and mutants: surface electrostatic charge distributions  

E-Print Network [OSTI]

Prion is a misfolded protein found in mammals that causes infectious diseases of the nervous system in humans and animals. Prion diseases are invariably fatal and highly infectious neurodegenerative diseases that affect a wide variety of mammalian species such as sheep and goats, cattle, deer, elk and humans etc. Recent studies have shown that rabbits have a low susceptibility to be infected by prion diseases with respect to other animals including humans. The present study employs molecular dynamics (MD) means to unravel the mechanism of rabbit prion proteins (RaPrPC) based on the recently available rabbit NMR structures (of the wild-type and its two mutants of two surface residues). The electrostatic charge distributions on the protein surface are the focus when analysing the MD trajectories. It is found that we can conclude that surface electrostatic charge distributions indeed contribute to the structural stability of wild-type RaPrPC; this may be useful for the medicinal treatment of prion diseases.

Zhang, Jiapu

2014-01-01T23:59:59.000Z

145

Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade  

DOE Patents [OSTI]

A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) or other lamps arranged vertically, i.e. one lamp above the other, with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum ensures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. In a particular configuration, the reflective septum is bowl shaped, with the upper CFL sitting in the bowl, and a luminous shade hanging down from the bowl. The lower CFL provides both task lighting and uniform shade luminance. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. However, other types of lamps, including incandescent, halogen, and LEDs can also be used in the fixture. The lighting system may be designed for the home, hospitality, office or other environments.

Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

2002-01-01T23:59:59.000Z

146

The Molecular Structure of a Phosphatidylserine Bilayer Determined by Scattering and Molecular Dynamics Simulations  

SciTech Connect (OSTI)

Phosphatidylserine (PS) lipids play essential roles in biological processes, including enzyme activation and apoptosis. We report on the molecular structure and atomic scale interactions of a fluid bilayer composed of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidylserine (POPS). A scattering density profile model, aided by molecular dynamics (MD) simulations, was developed to jointly refine different contrast small-angle neutron and X-ray scattering data, which yielded a lipid area of 62.7 A2 at 25 C. MD simulations with POPS lipid area constrained at different values were also performed using all-atom and aliphatic united-atom models. The optimal simulated bilayer was obtained using a model-free comparison approach. Examination of the simulated bilayer, which agrees best with the experimental scattering data, reveals a preferential interaction between Na+ ions and the terminal serine and phosphate moieties. Long-range inter-lipid interactions were identified, primarily between the positively charged ammonium, and the negatively charged carboxylic and phosphate oxygens. The area compressibility modulus KA of the POPS bilayer was derived by quantifying lipid area as a function of surface tension from area-constrained MD simulations. It was found that POPS bilayers possess a much larger KA than that of neutral phosphatidylcholine lipid bilayers. We propose that the unique molecular features of POPS bilayers may play an important role in certain physiological functions.

Pan, Jianjun [University of South Florida, Tampa (USF)] [University of South Florida, Tampa (USF); Cheng, Xiaolin [ORNL] [ORNL; Monticelli, Luca [Institut National de la Sant et de la Recherche Mdicale (INSERM) and INTS, France] [Institut National de la Sant et de la Recherche Mdicale (INSERM) and INTS, France; Heberle, Frederick A [ORNL] [ORNL; Kucerka, Norbert [Atomic Energy of Canada Limited (AECL), Canadian Neutron Beam Centre (CNBC) and Comenius University,] [Atomic Energy of Canada Limited (AECL), Canadian Neutron Beam Centre (CNBC) and Comenius University,; Tieleman, D. Peter [University of Calgary, ALberta, Canada] [University of Calgary, ALberta, Canada; Katsaras, John [ORNL] [ORNL

2014-01-01T23:59:59.000Z

147

Pilot Phase of a Field Study to Determine Waste of Water and Energy in Residential Hot-Water Distribution Systems  

E-Print Network [OSTI]

understanding the waste of energy and water in residentialStudy to Determine Waste of Water and Energy in ResidentialStudy to Determine Waste of Water and Energy in Residential

Lutz, Jim

2012-01-01T23:59:59.000Z

148

Dynamic  

Office of Legacy Management (LM)

Dynamic Dynamic , and Static , Res.ponse of the Government Oil Shale Mine at ' , . , Rifle, Colorado, to the Rulison Event. , . ; . . DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. p ( y c - - a 2-1 0 -4- REPORT AT (29-2) 914 USBM 1 0 0 1 UNITED STATES DEPARTMENT O F THE I NTERIOR BUREAU OF MINES e s.09 P. L. R U S S E L L RESEARCH D l RECTOR Februory 2, lB7O DYNAMIC AND STATIC RESPONSE 'OF THE GOVERNMENT OIL SHALE MINE A T RIFLE, COLORADO, T O THE, RULISON EVENT ORDER FROM CFSTl A S ~ B ~ &J C / This page intentionally left blank CONTENTS Page . . . . . . . . . . . . . . . . . . . . . . . . . H i s t o r i c . a l Des c r i p t i o n 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction 3

149

High Resolution Quantitative Auto-Radiography to determine microscopic distributions of B-10 in neutron capture therapy  

E-Print Network [OSTI]

The success of Boron Neutron Capture Therapy (BNCT) is heavily dependent on the microscopic distribution of B-10 in tissue. High Resolution Quantitative Auto-Radiography (HRQAR) is a potentially valuable analytical tool ...

Harris, Thomas C. (Thomas Cameron)

2006-01-01T23:59:59.000Z

150

Validity of automated x-ray photoelectron spectroscopy algorithm to determine the amount of substance and the depth distribution of atoms  

Science Journals Connector (OSTI)

The author reports a systematic study of the range of validity of a previously developed algorithm for automated x-ray photoelectron spectroscopy analysis which takes into account the variation in both peak intensity and the intensity in the background of inelastically scattered electrons. This test was done by first simulating spectra for the Au4d peak with gold atoms distributed in the form of a wide range of nanostructures which includes overlayers with varying thickness a 5? layer of atoms buried at varying depths and a substrate covered with an overlayer of varying thickness. Next the algorithm was applied to analyze these spectra. The algorithm determines the number of atoms within the outermost 3 ? of the surface. This amount of substance is denoted AOS 3 ? (where ? is the electron inelastic mean free path). In general the determined AOS 3 ? is found to be accurate to within ?1020% depending on the depth distribution of the atoms. The algorithm also determines a characteristic length L which was found to give unambiguous information on the depth distribution of the atoms for practically all studied cases. A set of rules for this parameter which relates the value of L to the depths where the atoms are distributed was tested and these rules were found to be generally valid with only a few exceptions. The results were found to be rather independent of the spectral energy range (from 20 to 40?eV below the peak energy) used in the analysis.

Sven Tougaard

2013-01-01T23:59:59.000Z

151

Determination of the relative power density distribution in a heterogeneous reactor from the results of measurements of the reactivity effects and the neutron importance function  

SciTech Connect (OSTI)

A method for experimental determination of the relative power density distribution in a heterogeneous reactor based on measurements of fuel reactivity effects and importance of neutrons from a californium source is proposed. The method was perfected on two critical assembly configurations at the NARCISS facility of the Kurchatov Institute, which simulated a small-size heterogeneous nuclear reactor. The neutron importance measurements were performed on subcritical and critical assemblies. It is shown that, along with traditionally used activation methods, the developed method can be applied to experimental studies of special features of the power density distribution in critical assemblies and reactors.

Bobrov, A. A.; Glushkov, E. S.; Zimin, A. A.; Kapitonova, A. V.; Kompaniets, G. V.; Nosov, V. I., E-mail: rpp@adis.vver.kiae.ru; Petrushenko, R. P.; Smirnov, O. N. [Russian Research Centre Kurchatov Institute (Russian Federation)

2012-12-15T23:59:59.000Z

152

Dynamics  

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

Hydration Hydration Water on Rutile Studied by Backscattering Neutron Spectroscopy and Molecular Dynamics Simulation E. Mamontov,* ,† D. J. Wesolowski, ‡ L. Vlcek, § P. T. Cummings, §,| J. Rosenqvist, ‡ W. Wang, ⊥ and D. R. Cole ‡ Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, Chemical Sciences DiVision, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6110, Department of Chemical Engineering, Vanderbilt UniVersity, NashVille, Tennessee 37235-1604, Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6496, and EnVironmental Sciences DiVision, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6036 ReceiVed: December 20, 2007; ReVised Manuscript ReceiVed: June 4, 2008 The high energy resolution, coupled with the wide dynamic range, of the new backscattering

153

Performance of a Dynamically Controlled Inverter in a Photovoltaic System Interconnected with a Secondary Network Distribution System  

SciTech Connect (OSTI)

In 2008, a 300 kW{sub peak} photovoltaic (PV) system was installed on the rooftop of the Colorado Convention Center (CCC). The installation was unique for the electric utility, Xcel Energy, as it had not previously permitted a PV system to be interconnected on a building served by the local secondary network distribution system (network). The PV system was installed with several provisions; one to prevent reverse power flow, another called a dynamically controlled inverter (DCI), that curtails the output of the PV inverters to maintain an amount of load supplied by Xcel Energy at the CCC. The DCI system utilizes current transformers (CTs) to sense power flow to insure that a minimum threshold is maintained from Xcel Energy through the network transformers. The inverters are set to track the load on each of the three phases and curtail power from the PV system when the generated PV system current reaches 95% of the current on any phase. This is achieved by the DCI, which gathers inputs from current transformers measuring the current from the PV array, Xcel, and the spot network load. Preventing reverse power flow is a critical technical requirement for the spot network which serve this part of the CCC. The PV system was designed with the expectation that the DCI system would not curtail the PV system, as the expected minimum load consumption was historically higher than the designed PV system size. However, the DCI system has operated many days during the course of a year, and the performance has been excellent. The DCI system at the CCC was installed as a secondary measure to insure that a minimum level of power flows to the CCC from the Xcel Energy network. While this DCI system was intended for localized control, the system could also reduce output percent if an external smart grid control signal was employed. This paper specifically focuses on the performance of the innovative design at this installation; however, the DCI system could also be used for new s- art grid-enabled distribution systems where renewables power contributions at certain conditions or times may need to be curtailed.

Coddington, M. H.; Kroposki, B. D.; Basso, T.; Berger, D.; Crowell, K.; Hayes, J.

2011-01-01T23:59:59.000Z

154

Multisoliton solutions in terms of double Wronskian determinant for a generalized variable-coefficient nonlinear Schroedinger equation from plasma physics, arterial mechanics, fluid dynamics and optical communications  

SciTech Connect (OSTI)

In this paper, the multisoliton solutions in terms of double Wronskian determinant are presented for a generalized variable-coefficient nonlinear Schroedinger equation, which appears in space and laboratory plasmas, arterial mechanics, fluid dynamics, optical communications and so on. By means of the particularly nice properties of Wronskian determinant, the solutions are testified through direct substitution into the bilinear equations. Furthermore, it can be proved that the bilinear Baecklund transformation transforms between (N - 1)- and N-soliton solutions.

Lue Xing [School of Science, P.O. Box 122, Beijing University of Posts and Telecommunications, Beijing 100876 (China)], E-mail: xinglv655@yahoo.com.cn; Zhu Hongwu; Yao Zhenzhi; Meng Xianghua; Zhang Cheng [School of Science, P.O. Box 122, Beijing University of Posts and Telecommunications, Beijing 100876 (China); Zhang Chunyi [Ministry-of-Education Key Laboratory of Fluid Mechanics and National Laboratory for Computational Fluid Dynamics, Beijing University of Aeronautics and Astronautics, Beijing 100083 (China); Meteorology Center of Air Force Command Post, Changchun 130051 (China); Tian Bo [School of Science, P.O. Box 122, Beijing University of Posts and Telecommunications, Beijing 100876 (China); State Key Laboratory of Software Development Environment, Beijing University of Aeronautics and Astronautics, Beijing 100083 (China); Key Laboratory of Optical Communication and Lightwave Technologies, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876 (China)], E-mail: gaoyt@public.bta.net.cn

2008-08-15T23:59:59.000Z

155

Determination of Optical-Field Ionization Dynamics in Plasmas through the Direct Measurement of the Optical Phase Change  

SciTech Connect (OSTI)

This is the final report of a three-year Laboratory Directed Research and Development (LDRD) Project at Los Alamos National Laboratory (LANL). The detailed dynamics of an atom in a strong laser field is rich in both interesting physics and potential applications. The goal of this project was to develop a technique for characterizing high-field laser-plasma interactions with femtosecond resolution based on the direct measurement of the phase change of an optical pulse. The authors developed the technique of Multi-pulse Interferometric Frequency Resolved Optical Gating (MI-FROG), which recovers (to all orders) the phase difference between pumped and unpumped probe pulses, enabling the determination of sub-pulsewidth time-resolved phase and frequency shifts impressed by a pump pulse on a weak probe pulse. Using MI-FROG, the authors obtained the first quantitative measurements of high-field ionization rates in noble gases and diatomic molecules. They obtained agreement between the measured ionization rates an d those calculated for the noble gases and diatomic nitrogen and hydrogen using a one-dimensional fluid model and rates derived from tunneling theory. However, much higher rates are measured for diatomic oxygen than predicted by tunneling theory calculations.

Taylor, A.J.; Omenetto, G.; Rodriguez, G.; Siders, C.W.; Siders, J.L.W.; Downer, C.

1999-07-16T23:59:59.000Z

156

Dynamical friction in modified Newtonian dynamics  

E-Print Network [OSTI]

We have tested a previous analytical estimate of the dynamical friction timescale in Modified Newtonian Dynamics (MOND) with fully non-linear N-body simulations. The simulations confirm that the dynamical friction timescale is significantly shorter in MOND than in equivalent Newtonian systems, i.e. systems with the same phase-space distribution of baryons and additional dark matter. An apparent conflict between this result and the long timescales determined for bars to slow and mergers to be completed in previous N-body simulations of MOND systems is explained. The confirmation of the short dynamical-friction timescale in MOND underlines the challenge that the Fornax dwarf spheroidal poses to the viability of MOND.

C. Nipoti; L. Ciotti; J. Binney; P. Londrillo

2008-02-08T23:59:59.000Z

157

Numerical Simulation of Squeeze Film Dampers and Study of the Effect of Central Groove on the Dynamic Pressure Distribution  

E-Print Network [OSTI]

. The behavior of dynamic pressure profiles at different operating conditions, and the effect of a central groove on dynamic pressure profiles were also studied. Simulation results of a 3D case which is similar to the one experimentally studied by Delgado were...

Boppa, Praneetha

2012-10-19T23:59:59.000Z

158

Experimental determination of the radial dose distribution in high gradient regions around {sup 192}Ir wires: Comparison of electron paramagnetic resonance imaging, films, and Monte Carlo simulations  

SciTech Connect (OSTI)

Purpose: The experimental determination of doses at proximal distances from radioactive sources is difficult because of the steepness of the dose gradient. The goal of this study was to determine the relative radial dose distribution for a low dose rate {sup 192}Ir wire source using electron paramagnetic resonance imaging (EPRI) and to compare the results to those obtained using Gafchromic EBT film dosimetry and Monte Carlo (MC) simulations. Methods: Lithium formate and ammonium formate were chosen as the EPR dosimetric materials and were used to form cylindrical phantoms. The dose distribution of the stable radiation-induced free radicals in the lithium formate and ammonium formate phantoms was assessed by EPRI. EBT films were also inserted inside in ammonium formate phantoms for comparison. MC simulation was performed using the MCNP4C2 software code. Results: The radical signal in irradiated ammonium formate is contained in a single narrow EPR line, with an EPR peak-to-peak linewidth narrower than that of lithium formate ({approx}0.64 and 1.4 mT, respectively). The spatial resolution of EPR images was enhanced by a factor of 2.3 using ammonium formate compared to lithium formate because its linewidth is about 0.75 mT narrower than that of lithium formate. The EPRI results were consistent to within 1% with those of Gafchromic EBT films and MC simulations at distances from 1.0 to 2.9 mm. The radial dose values obtained by EPRI were about 4% lower at distances from 2.9 to 4.0 mm than those determined by MC simulation and EBT film dosimetry. Conclusions: Ammonium formate is a suitable material under certain conditions for use in brachytherapy dosimetry using EPRI. In this study, the authors demonstrated that the EPRI technique allows the estimation of the relative radial dose distribution at short distances for a {sup 192}Ir wire source.

Kolbun, N.; Leveque, Ph.; Abboud, F.; Bol, A.; Vynckier, S.; Gallez, B. [Biomedical Magnetic Resonance Unit, Louvain Drug Research Institute, Universite catholique de Louvain, Avenue Mounier 73.40, B-1200 Brussels (Belgium); Molecular Imaging and Experimental Radiotherapy Unit, Institute of Experimental and Clinical Research, Universite catholique de Louvain, Avenue Hippocrate 55, B-1200 Brussels (Belgium); Biomedical Magnetic Resonance Unit, Louvain Drug Research Institute, Universite catholique de Louvain, Avenue Mounier 73.40, B-1200 Brussels (Belgium)

2010-10-15T23:59:59.000Z

159

Impact of SCIG and DFIG Type Wind Turbine on the Stability of Distribution Networks: static and dynamic  

E-Print Network [OSTI]

Impact of SCIG and DFIG Type Wind Turbine on the Stability of Distribution Networks: static fed induction generator (DFIG) type wind turbine in distribution networks. The analysis is carried out and DFIG type wind turbines have significant impact on the static voltage stability, power loss

Pota, Himanshu Roy

160

Vacancy diffusion in colloidal crystals as determined by dynamical density-functional theory and the phase-field-crystal model  

E-Print Network [OSTI]

A two-dimensional crystal of repulsive dipolar particles is studied in the vicinity of its melting transition by using Brownian dynamics computer simulation, dynamical density functional theory and phase-field crystal modelling. A vacancy is created by taking out a particle from an equilibrated crystal and the relaxation dynamics of the vacancy is followed by monitoring the time-dependent one-particle density. We find that the vacancy is quickly filled up by diffusive hopping of neighbouring particles towards the vacancy center. We examine the temperature dependence of the diffusion constant and find that it decreases with decreasing temperature in the simulations. This trend is reproduced by the dynamical density functional theory. Conversely, the phase field crystal calculations predict the opposite trend. Therefore, the phase-field model needs a temperature-dependent expression for the mobility to predict trends correctly.

Sven van Teeffelen; Cristian Vasile Achim; Hartmut Lwen

2013-02-05T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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
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161

A one-dimensional Lattice Boltzmann method for modeling the dynamic pole-to-pole oscillations of Min proteins for determining the position of the midcell division plane  

E-Print Network [OSTI]

Determining the middle of the bacteria cell and the proper placement of the septum is essential to the division of the bacterial cell. In E. coli, this process depends on the proteins MinC, MinD, and MinE. Here, the Lattice Boltzmann method (LBM) is used to study the dynamics of the oscillations of the min proteins from pole to pole. This determines the midcell division plane at the cellular level. The LBM is applied to the set of the deterministic reaction diffusion equations proposed by Howard et. al. [1] to describe the dynamics of the Min proteins. The LBM results are in good agreement with those of Howard et al, and agree qualitatively with the experimental results. Our good results indicate that the LBM can be an alternative computational tool for simulating problems dealing with complex biological system which are described by the reaction-diffusion equations.

Waipot Ngamsaad; Wannapong Triampo; Paisan Kanthang; I-Ming Tang; Narin Nuttawut; Charin Modjung

2004-12-09T23:59:59.000Z

162

Determination of Fe charge-state distributions in the Princeton large torus by Bragg crystal x-ray spectroscopy  

Science Journals Connector (OSTI)

A curved-crystal Bragg x-ray spectrometer has been used to measure K? or 1s-2p radiation from highly stripped Fexviii-Fexxv impurity ions in the Princeton large torus tokamak. The spectrometer has sufficient energy resolution (?4 eV at 6400 eV) to distinguish between the different ionization states of iron by measuring the energy shift of the K? x rays. The measured wavelengths agree well with theory and with spectra from solar flares and from laser-produced plasmas. The distribution of Fe charge states in the center of the discharge has been inferred from a comparison of the measured x-ray spectrum with theory. The shape of the spectrum depends strongly on electron temperature (Te) in the range Te=800-1500 eV. Within the factor of 2 uncertainty in L-shell ionization cross sections, measured intensities agree with theory, which is based on coronal equilibrium, indicating that the ion lifetime in the center of the plasma is approximately equal to or greater than the equilibration time.

K. W. Hill; S. von Goeler; M. Bitter; L. Campbell; R. D. Cowan; B. Fraenkel; A. Greenberger; R. Horton; J. Hovey; W. Roney; N. R. Sauthoff; W. Stodiek

1979-04-01T23:59:59.000Z

163

J. Phys. A: Math. Gen. 29 (1996) 51575179. Printed in the UK The spatial distribution of the illumination of dynamic  

E-Print Network [OSTI]

and Mathematics, Faculty of Engineering, Cairo University, Giza, Egypt Electromagnetics Laboratory, Department been demonstrated that finite-energy causal localized waves (LW) can be generated from dynamic Gaussian the source-free FWM pulse [2] has to be imposed in order to ensure that a localized pulse is efficiently

Ziolkowski, Richard W.

164

Determination of Migration Parameters for Volatile Organic Compounds in Polyethylene Terephthalate and Nylon 6 by Dynamic Permeation Cell Method  

E-Print Network [OSTI]

Determination of Migration Parameters for Volatile Organic Compounds in Polyethylene Terephthalate, such as low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP); however

Heller, Barbara

165

Dynamics and energy balance of the Hadly circulation and the tropical precipitation zones: Significance of the distribution of evaporation  

SciTech Connect (OSTI)

A series of numerical experiments is performed using a general circulation model with an idealistic ocean-covered boundary condition. The meridional structure of the Hadley circulation system, which is a combined structure of the Hadley circulation and the tropical precipitation zone, is examined from the standpoints of the water vapor and the energy budgets. Although the prescribed SST distribution has a broad peak centered at the equator, the distribution of the precipitation has two peaks straddling the equator. The distribution of the evaporation rate is an important factor in the formation of this structure. The evaporation rate is smaller near the equator than in the subtropics because of its dependence upon the wind speed. If this dependence is removed, the latitudinal distribution of evaporation becomes flat and the precipitation concentrates at the equator to form a single band structure. Qualitatively similar results are obtained in experiments with an axisymmetric two-dimensional model without the effect of disturbances. The net supply of the moist static energy must balance with the divergence of the meridional transport of moist static energy. A small fractional change in the evaporation rate causes a large change in the net energy supply and thus results in a strong modification of the meridional structure of the system. A strong positive feedback between the strength of the Hadley circulation and the latitudinal concentration of the precipitation provides the high sensitivity of the Hadley circulation system to the distribution of the evaporation, which is the principal energy source of the system. A set of comparative experiments with different cumulus parameterization schemes is performed. It is shown that the difference in the vertical stratification significantly modifies the energy budget of the Hadley circulation system and causes a large difference in the distribution of precipitation. 27 refs., 21 figs.

Numaguti, A. (National Institute for Environmental Studies, Tsukuba, Ibaraki (Japan))

1993-07-01T23:59:59.000Z

166

Design of a Particle Shadowgraph Velocimetry and Size (PSVS) System to Determine Particle Size and Density Distributions (PSDD) in Hanford Nuclear Tank Wastes  

SciTech Connect (OSTI)

An accurate particle size and density distribution (PSDD) for nuclear tank wastes is an essential piece of information that helps determine the engineering requirements for a host of waste management unit operations including tank mixing, pipeline transport, and filtration. The existing approach has involved a laborious approach in which individual particles are identified using SEM/XRD methods and the density of these materials obtained from the technical literature. Further, some methods simply approximate individual particle densities by assuming chemical composition rather than actual measurements of particle density. A particle shadowgraph velocimetry and size (PSVS) system has been designed to obtain representative PSDDs for a broad range of Hanford tank waste materials existing as both individual particles and agglomerates. The PSVS utilizes optical hardware, a temperature controlled settling column, and particle introduction chamber to accurately and reproducibly obtain images of settling particles. Image analysis software then provides a highly accurate determination of both particle terminal velocity and equivalent spherical particle diameter. The particle/agglomerate density is then calculated from Newtons terminal settling theory. The PSVS was designed to accurately image particle/agglomerate sizes between 10-1000m and particle/agglomerate densities ranging from 1.4-11.5g/cm3 where the maximum terminal velocity does not exceed 20cm/s. Preliminary testing was completed and results were in good agreement with terminal settling theory. Recent results of this method development are presented, as well as experimental design, and future proposed work.

Fountain, Matthew S.; Blanchard, Jeremy; Erikson, Rebecca L.; Kurath, Dean E.; Howe, Daniel T.; Adkins, Harold E.; Jenks, Jeromy WJ

2012-01-10T23:59:59.000Z

167

Dynamic simulation of a circulating fluidized bed boiler of low circulating ratio with wide particle size distributions  

SciTech Connect (OSTI)

A steady state model of a coal fired CFB boiler considering the hydrodynamics, heat transfer and combustion is presented. This model predicts the flue gas temperature, the chemical gas species (O{sub 2}, H{sub 2}O, CO, CO{sub 2} and SO{sub 2}) and char concentration distributions in both the axial and radial location along the furnace including the bottom and upper portion. The model was validated against experimental data generated in a 35 t/h commercial CFB boiler with low circulating ratio.

Lu Huilin; Yang Lidan; Bie Rushan; Zhao Guangbo

1999-07-01T23:59:59.000Z

168

Influence of Electron-Impact Multiple Ionization on Equilibrium and Dynamic Charge State Distributions: A Case Study Using Iron  

E-Print Network [OSTI]

We describe the influence of electron-impact multiple ionization (EIMI) on the ionization balance of collisionally ionized plasmas. We are unaware of any previous ionization balance calculations that have included EIMI, which is usually assumed to be unimportant. Here, we incorporate EIMI cross-section data into calculations of both equilibrium and non-equilibrium charge-state distributions (CSDs). For equilibrium CSDs, we find that EIMI has only a small effect and can usually be ignored. However, for non-equilibrium plasmas the influence of EIMI can be important. In particular, we find that for plasmas in which the temperature oscillates there are significant differences in the CSD when including versus neglecting EIMI. These results have implications for modeling and spectroscopy of impulsively heated plasmas, such as nanoflare heating of the solar corona.

Hahn, Michael

2014-01-01T23:59:59.000Z

169

Importance of carrier dynamics and conservation of momentum in atom-selective STM imaging and band gap determination of GaAs(110)  

Science Journals Connector (OSTI)

Scanning tunneling microscopy and spectroscopy measurements on the GaAs(110) surface with complementary theoretical calculations are performed to clarify the effects involved in the tunneling of unpinned semiconductor surfaces. We show that the flatband and tip-induced band bending as well as equilibrium conditions are insufficient to describe the effects involved. Instead, carrier dynamics and conservation of momentum of the tunneling electrons need to be taken into account for a complete description of the contributions of the valence or conduction band states. The results allow us to understand the unique properties needed to achieve the atom-selective imaging observed on these surfaces as well as the determination of the band gap energy.

N. D. Jger, E. R. Weber, K. Urban, and Ph. Ebert

2003-04-29T23:59:59.000Z

170

VUV studies of molecular photofragmentation dynamics  

SciTech Connect (OSTI)

State-resolved, photoion and photoelectron methods are used to study the neutral fragmentation and ionization dynamics of small molecules relevant to atmospheric and combustion chemistry. Photodissociation and ionization are initiated by coherent VUV radiation and the fragmentation dynamics are extracted from measurements of product rovibronic state distributions, kinetic energies and angular distributions. The general aim of these studies is to investigate the multichannel interactions between the electronic and nuclear motions which determine the evolution of the photoexcited {open_quotes}complex{close_quotes} into the observed asymptotic channels.

White, M.G. [Brookhaven National Laboratory, Upton, NY (United States)

1993-12-01T23:59:59.000Z

171

Dynamics of the Eley-Rideal Reaction of D Atoms with H Atoms Adsorbed on Cu(111): Vibrational and Rotational State Distributions of the HD Product  

Science Journals Connector (OSTI)

We have determined the internal-state distribution for the HD product of the reaction of gas-phase D atoms with H atoms chemisorbed on Cu(111). The populations of the vibrational states v=0, 1, 2, and 3 are comparable, while that for v=4 is considerably smaller, giving a mean vibrational energy of ?0.7 eV. The mean rotational energy falls with increasing v, from ?0.5 eV for v=0 to <0.2 eV for v=4, with an overall mean rotational energy of ?0.4 eV. The maximum internal energy observed is ?2.3 eV, consistent with the total energy available to the product. Results are compared with recent calculations.

C. T. Rettner and D. J. Auerbach

1995-05-29T23:59:59.000Z

172

Characterization of fracture reservoirs using static and dynamic data: From sonic and 3D seismic to permeability distribution. Annual report, March 1, 1996--February 28, 1997  

SciTech Connect (OSTI)

In low porosity, low permeability zones, natural fractures are the primary source of permeability which affect both production and injection of fluids. The open fractures do not contribute much to porosity, but they provide an increased drainage network to any porosity. They also may connect the borehole to remote zones of better reservoir characteristics. An important approach to characterizing the fracture orientation and fracture permeability of reservoir formations is one based on the effects of such conditions on the propagation of acoustic and seismic waves in the rock. The project is a study directed toward the evaluation of acoustic logging and 3D-seismic measurement techniques as well as fluid flow and transport methods for mapping permeability anisotropy and other petrophysical parameters for the understanding of the reservoir fracture systems and associated fluid dynamics. The principal application of these measurement techniques and methods is to identify and investigate the propagation characteristics of acoustic and seismic waves in the Twin Creek hydrocarbon reservoir owned by Union Pacific Resources (UPR) and to characterize the fracture permeability distribution using production data. This site is located in the overthrust area of Utah and Wyoming. UPR drilled six horizontal wells, and presently UPR has two rigs running with many established drill hole locations. In addition, there are numerous vertical wells that exist in the area as well as 3D seismic surveys. Each horizontal well contains full FMS logs and MWD logs, gamma logs, etc.

Parra, J.O.; Collier, H.A.; Owen, T.E. [and others

1997-06-01T23:59:59.000Z

173

Using Thermally-Degrading, Partitioning, and Nonreactive Tracers to Determine Temperature Distribution and Fracture/Heat Transfer Surface Area in Geothermal Reservoirs  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Project Summary. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate quantitative characterization of temperature distributions and surface area available for heat transfer in EGS.

174

Determination of the Mechanical Amplitude Distribution of Quartz Crystal Resonators by Use of a New Noninterferometric Laser Speckle Vibration Measurement System  

Science Journals Connector (OSTI)

Using quartz crystals as sensors in thickness monitors the knowledge of the distribution of the mechanical vibration amplitude is of particular importance [1]. ... the thickness of the thin film. This measurement

S. Hertl; L. Wimmer; E. Benes

1984-01-01T23:59:59.000Z

175

Synchronized dynamic dose reconstruction  

SciTech Connect (OSTI)

Variations in target volume position between and during treatment fractions can lead to measurable differences in the dose distribution delivered to each patient. Current methods to estimate the ongoing cumulative delivered dose distribution make idealized assumptions about individual patient motion based on average motions observed in a population of patients. In the delivery of intensity modulated radiation therapy (IMRT) with a multi-leaf collimator (MLC), errors are introduced in both the implementation and delivery processes. In addition, target motion and MLC motion can lead to dosimetric errors from interplay effects. All of these effects may be of clinical importance. Here we present a method to compute delivered dose distributions for each treatment beam and fraction, which explicitly incorporates synchronized real-time patient motion data and real-time fluence and machine configuration data. This synchronized dynamic dose reconstruction method properly accounts for the two primary classes of errors that arise from delivering IMRT with an MLC: (a) Interplay errors between target volume motion and MLC motion, and (b) Implementation errors, such as dropped segments, dose over/under shoot, faulty leaf motors, tongue-and-groove effect, rounded leaf ends, and communications delays. These reconstructed dose fractions can then be combined to produce high-quality determinations of the dose distribution actually received to date, from which individualized adaptive treatment strategies can be determined.

Litzenberg, Dale W.; Hadley, Scott W.; Tyagi, Neelam; Balter, James M.; Ten Haken, Randall K.; Chetty, Indrin J. [University of Michigan, Ann Arbor, Michigan 48109 (United States)

2007-01-15T23:59:59.000Z

176

Evaluation of dual energy quantitative CT for determining the spatial distributions of red marrow and bone for dosimetry in internal emitter radiation therapy  

SciTech Connect (OSTI)

Purpose: To evaluate a three-equation three-unknown dual-energy quantitative CT (DEQCT) technique for determining region specific variations in bone spongiosa composition for improved red marrow dose estimation in radionuclide therapy. Methods: The DEQCT method was applied to 80/140 kVp images of patient-simulating lumbar sectional body phantoms of three sizes (small, medium, and large). External calibration rods of bone, red marrow, and fat-simulating materials were placed beneath the body phantoms. Similar internal calibration inserts were placed at vertebral locations within the body phantoms. Six test inserts of known volume fractions of bone, fat, and red marrow were also scanned. External-to-internal calibration correction factors were derived. The effects of body phantom size, radiation dose, spongiosa region segmentation granularity [single (?17 17 mm) region of interest (ROI), 2 2, and 3 3 segmentation of that single ROI], and calibration method on the accuracy of the calculated volume fractions of red marrow (cellularity) and trabecular bone were evaluated. Results: For standard low dose DEQCT x-ray technique factors and the internal calibration method, the RMS errors of the estimated volume fractions of red marrow of the test inserts were 1.21.3 times greater in the medium body than in the small body phantom and 1.31.5 times greater in the large body than in the small body phantom. RMS errors of the calculated volume fractions of red marrow within 2 2 segmented subregions of the ROIs were 1.61.9 times greater than for no segmentation, and RMS errors for 3 3 segmented subregions were 2.32.7 times greater than those for no segmentation. Increasing the dose by a factor of 2 reduced the RMS errors of all constituent volume fractions by an average factor of 1.40 0.29 for all segmentation schemes and body phantom sizes; increasing the dose by a factor of 4 reduced those RMS errors by an average factor of 1.71 0.25. Results for external calibrations exhibited much larger RMS errors than size matched internal calibration. Use of an average body size external-to-internal calibration correction factor reduced the errors to closer to those for internal calibration. RMS errors of less than 30% or about 0.01 for the bone and 0.1 for the red marrow volume fractions would likely be satisfactory for human studies. Such accuracies were achieved for 3 3 segmentation of 5 mm slice images for: (a) internal calibration with 4 times dose for all size body phantoms, (b) internal calibration with 2 times dose for the small and medium size body phantoms, and (c) corrected external calibration with 4 times dose and all size body phantoms. Conclusions: Phantom studies are promising and demonstrate the potential to use dual energy quantitative CT to estimate the spatial distributions of red marrow and bone within the vertebral spongiosa.

Goodsitt, Mitchell M., E-mail: goodsitt@umich.edu; Shenoy, Apeksha; Howard, David; Christodoulou, Emmanuel; Dewaraja, Yuni K. [Department of Radiology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States)] [Department of Radiology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States); Shen, Jincheng [Department of Biostatistics, University of Michigan, 1415 Washington Heights, Ann Arbor, Michigan 48109 (United States)] [Department of Biostatistics, University of Michigan, 1415 Washington Heights, Ann Arbor, Michigan 48109 (United States); Schipper, Matthew J. [Department of Radiation Oncology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States)] [Department of Radiation Oncology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States); Wilderman, Scott [Department of Nuclear Engineering, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States)] [Department of Nuclear Engineering, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States); Chun, Se Young [Ulsan National Institute of Science and Technology (UNIST), School of Electrical and Computer Engineering, Ulsan 689-798 (Korea, Republic of)] [Ulsan National Institute of Science and Technology (UNIST), School of Electrical and Computer Engineering, Ulsan 689-798 (Korea, Republic of)

2014-05-15T23:59:59.000Z

177

Distributed Algorithms Distributed Transactions  

E-Print Network [OSTI]

Algorithms© Gero Mühl 8 Concurrency Control serial RC (ReCoverable) ACA (Avoiding Cascading Aborts) ST (StricDistributed Algorithms Distributed Transactions PD Dr.-Ing. Gero Mühl Kommunikations- und Betriebssysteme Fakultät für Elektrotechnik u. Informatik Technische Universität Berlin #12;Distributed Algorithms

Wichmann, Felix

178

The economics of US greenhouse gas emissions reduction policy : assessing distributional effects across households and the 50 United States using a recursive dynamic computable general equilibrium (CGE) model  

E-Print Network [OSTI]

The political economy of US climate policy has revolved around state- and district- level distributional economics, and to a lesser extent household-level distribution questions. Many politicians and analysts have suggested ...

Look, Wesley Allen

2013-01-01T23:59:59.000Z

179

Parton distributions for the LHC  

E-Print Network [OSTI]

We present updated leading-order, next-to-leading order and next-to-next-to-leading order parton distribution functions ("MSTW 2008") determined from global analysis of hard-scattering data within the standard framework of leading-twist fixed-order collinear factorisation in the MSbar scheme. These parton distributions supersede the previously available "MRST" sets and should be used for the first LHC data-taking and for the associated theoretical calculations. New data sets fitted include CCFR/NuTeV dimuon cross sections, which constrain the strange quark and antiquark distributions, and Tevatron Run II data on inclusive jet production, the lepton charge asymmetry from W decays and the Z rapidity distribution. Uncertainties are propagated from the experimental errors on the fitted data points using a new dynamic procedure for each eigenvector of the covariance matrix. We discuss the major changes compared to previous MRST fits, briefly compare to parton distributions obtained by other fitting groups, and giv...

Martin, A D; Thorne, R S; Watt, G

2009-01-01T23:59:59.000Z

180

The Application and Verification of ASHRAE 152-2004 (Method of Test for Determining the Design and Seasonal Efficiencies of Residential Thermal Distribution Systems) to DOE-2-1e Simulation Program  

E-Print Network [OSTI]

ESL-TR-08-06-01 THE APPLICATION AND VERIFICATION OF ASHRAE 152-2004 (Method of Test for Determining the Design and Seasonal Efficiencies of Residential Thermal Distribution Systems) TO DOE-2.1e SIMULATION PROGRAM Jeff S... Systems Laboratory, Texas A&M University System 1 EXECUTIVE SUMMARY This report describes the application and verification of duct model on DOE 2.1e version 119 using ASHRAE 152-2004 (Method of Test for Determining the Design and Seasonal...

Kim, S.; Haberl, J. S.

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Determination of nanoparticle structure type, size and strain distribution from X-ray data for monatomic f.c.c.-derived non-crystallographic nanoclusters  

Science Journals Connector (OSTI)

Whole-profile-fitting least-squares techniques are successfully applied to simulated and experimental diffraction patterns of monatomic f.c.c.-derived non-crystallographic nanoclusters, with the aim of extracting information about structure-type concentration, size and strain distribution.

Cervellino, A.

2003-09-08T23:59:59.000Z

182

CX-012136: Categorical Exclusion Determination | Department of...  

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

Exclusion Determination CX-012136: Categorical Exclusion Determination Distributed Fiber Optic Arrays: Integrated Temperature and Seismic Sensing for Detection of Carbon...

183

CX-011013: Categorical Exclusion Determination | Department of...  

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

Exclusion Determination CX-011013: Categorical Exclusion Determination Distributed Fiber Optic Arrays: Integrated Temperature and Seismic Sensing for Detection of Carbon...

184

CX-011017: Categorical Exclusion Determination | Department of...  

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

Exclusion Determination CX-011017: Categorical Exclusion Determination Distributed Fiber Optic Arrays: Integrated Temperature and Seismic Sensing for Detection of Carbon...

185

Using Sediment Records to Determine Sources, Distribution, Bioavailability, and Potential Toxicity of Dioxins in the Houston Ship Channel: A Multi-proxy Approach  

E-Print Network [OSTI]

contaminants (HOC). Analytical data on total organic carbon (TOC), BC, PAHs, dioxins and lignin (likely discarded from a pulp and paper mill along the Channel) were determined. This multi-proxy approach revealed that over the last several decades, HOC inputs...

Seward, Shaya M.

2012-07-16T23:59:59.000Z

186

Three-dimensional echocardiographic determination of left ventricular volumes and function by multiplane transesophageal transducer: dynamic in vitro validation and in vivo comparison with angiography and thermodilution  

Science Journals Connector (OSTI)

The goal of this study was to validate 3-dimensional echocardiography by multiplane transesophageal transducer for the determination of left ventricular volumes and ejection fraction in an in vitro experiment and to compare the method in vivo with biplane angiography and the continuous thermodilution method. In the dynamic in vitro experiment, we scanned rubber balloons in a water tank by using a pulsatile flow model. Twenty-nine measurements of volumes and ejection fractions were performed at increasing heart rates. Three-dimensional echocardiography showed a very high accuracy for volume measurements and ejection fraction calculation (correlation coefficient, standard error of estimate, and mean difference for end-diastolic volume 0.998, 2.3 mL, and 0.1 mL; for end-systolic volume 0.996, 2.7 mL, and 0.5 mL; and for ejection fraction 0.995, 1.0%, and ?0.4%, respectively). However, with increasing heart rate there was progressive underestimation of ejection fraction calculation (percent error for heart rate below and above 100 bpm 0.59% and ?8.6%, P<.001). In the in vivo study, left ventricular volumes and ejection fraction of 24 patients with symmetric and distorted left ventricular shape were compared with angiography results. There was good agreement for the subgroup of patients with normal left ventricular shape (mean difference 95% confidence interval for end-diastolic volume 5.26.7 mL, P<.05; for end-systolic volume ?0.58.4 mL, P=not significant; for ejection fraction 2.4%7.2%, P=not significant) and significantly more variability in the patients with left ventricular aneurysms (end-diastolic volume 23.156.4 mL, P<.01; end-systolic volume 5.641.0 mL, P=not significant; ejection fraction 4.9%16.0%, P<.05). Additionally, in 20 critically ill, ventilated patients, stroke volume and cardiac output measurements were compared with measurement from continuous thermodilution. Stroke volume as well as cardiac output correlated well to thermodilution (r=0.89 and 0.84, respectively, P<.001), although both parameters were significantly underestimated by 3-dimensional echocardiography (mean difference 95% confidence interval =?6.416.0 mL and ?0.61.6 L/min, respectively, P<.005)

Harald P. Khl; Andreas Franke; Uwe Janssens; Marc Merx; Jrgen Graf; Winfried Krebs; Helmut Reul; Gnter Rau; Rainer Hoffmann; Heinrich G. Klues; Peter Hanrath

1998-01-01T23:59:59.000Z

187

Experimental determination of dynamic Young's modulus and mechanical damping, and theoretical prediction of dislocation density for depleted uranium-0.75 wt% titanium using the PUCOT  

Science Journals Connector (OSTI)

Dynamic Young's modulus (E) and mechanical damping (Q ?1) measurements were made for three microstructures (?, ? + ?, and ??) of a depleted uranium-0.75 wt% titanium alloy. The...E and Q ...

K. H. Keene; A. Wolfenden; G. M. Ludtka

1988-08-01T23:59:59.000Z

188

Patch-occupancy models indicate human activity as major determinant of forest elephant Loxodonta cyclotis seasonal distribution in an industrial corridor in Gabon  

Science Journals Connector (OSTI)

The importance of human activity and ecological features in influencing African forest elephant ranging behaviour was investigated in the RabiNdogo corridor of the Gamba Complex of Protected Areas in southwest Gabon. Locations in a wide geographical area with a range of environmental variables were selected for patch-occupancy surveys using elephant dung to assess seasonal presence and absence of elephants. Patch-occupancy procedures allowed for covariate modelling evaluating hypotheses for both occupancy in relation to human activity and ecological features, and detection probability in relation to vegetation density. The best fitting models for old and fresh dung data sets indicate that (1) detection probability for elephant dung is negatively related to the relative density of the vegetation, and (2) human activity, such as presence and infrastructure, are more closely associated with elephant distribution patterns than are ecological features, such as the presence of wetlands and preferred fresh fruit. Our findings emphasize the sensitivity of elephants to human disturbance, in this case infrastructure development associated with gas and oil production. Patch-occupancy methodology offers a viable alternative to current transect protocols for monitoring programs with multiple covariates.

Ralph Buij; William J. McShea; Patrick Campbell; Michelle E. Lee; Francisco Dallmeier; Sylvain Guimondou; Loc Mackaga; Nicaise Guisseougou; Serge Mboumba; James E. Hines; James D. Nichols; Alfonso Alonso

2007-01-01T23:59:59.000Z

189

Vehicle System Dynamics, Vol. 26, No.4, October 1996, pp.301-320. Traction/Braking Force Distribution for Optimal Longitudinal  

E-Print Network [OSTI]

as the desired level of vehicle yaw motion, and the control system was designed to follow the yaw motion commandVehicle System Dynamics, Vol. 26, No.4, October 1996, pp.301-320. Traction/Braking Force in the past twenty years through the use of electronic devices. Four-wheel-steering (4WS) systems have been

Peng, Huei

190

Local Soot Loading Distribution in Cordierite Diesel Particulate...  

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

Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by Dynamic Neutron Radiography Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by...

191

Modeling Molecular Dynamics from Simulations  

SciTech Connect (OSTI)

Many important processes in biology occur at the molecular scale. A detailed understanding of these processes can lead to significant advances in the medical and life sciences. For example, many diseases are caused by protein aggregation or misfolding. One approach to studying these systems is to use physically-based computational simulations to model the interactions and movement of the molecules. While molecular simulations are computationally expensive, it is now possible to simulate many independent molecular dynamics trajectories in a parallel fashion by using super- or distributed- computing methods such as Folding@Home or Blue Gene. The analysis of these large, high-dimensional data sets presents new computational challenges. In this seminar, I will discuss a novel approach to analyzing large ensembles of molecular dynamics trajectories to generate a compact model of the dynamics. This model groups conformations into discrete states and describes the dynamics as Markovian, or history-independent, transitions between the states. I will discuss why the Markovian state model (MSM) is suitable for macromolecular dynamics, and how it can be used to answer many interesting and relevant questions about the molecular system. I will also discuss many of the computational and statistical challenges in building such a model, such as how to appropriately cluster conformations, determine the statistical reliability, and efficiently design new simulations.

Hinrichs, Nina Singhal (University of Chicago) [University of Chicago

2009-01-28T23:59:59.000Z

192

CX-100004: Categorical Exclusion Determination | Department of...  

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

Categorical Exclusion Determination Leveraging a Fundamental Understanding of Fracture Flow, Dynamic Permeability Enhancement, and Induced Seismicity to Improve Geothermal...

193

CX-011824: Categorical Exclusion Determination | Department of...  

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

Exclusion Determination CX-011824: Categorical Exclusion Determination Dynamic Mechanical Analyzer CX(s) Applied: B3.6 Date: 01062014 Location(s): South Carolina...

194

Hierarchical Network Structure Promotes Dynamical Robustness  

E-Print Network [OSTI]

The analysis of dynamical systems that attempts to model chemical reaction, gene-regulatory, population, and ecosystem networks all rely on models having interacting components. When the details of these interactions are unknown for biological systems of interest, one effective approach is to study the dynamical properties of an ensemble of models determined by evolutionary constraints that may apply to all such systems. One such constraint is that of dynamical robustness. Despite previous investigations, the relationship between dynamical robustness-an important functional characteristic of many biological systems-and network structure is poorly understood. Here we analyze the stability and robustness of a large class of dynamical systems and demonstrate that the most hierarchical network structures, those equivalent to the total ordering, are the most robust. In particular, we determine the probability distribution of robustness over system connectivity and show that robustness is maximized by maximizing the number of links between strongly connected components of the graph representing the underlying system connectivity. We demonstrate that this can be understood in terms of the fact that permutation of strongly connected components is a fundamental symmetry of dynamical robustness, which applies to networks of any number of components and is independent of the distribution from which the strengths of interconnection among components are sampled. The classification of dynamical robustness based upon a purely topological property provides a fundamental organizing principle that can be used in the context of experimental validation to select among models that break or preserve network hierarchy. This result contributes to an explanation for the observation of hierarchical modularity in biological networks at all scales.

Cameron Smith; Raymond S. Puzio; Aviv Bergman

2014-12-01T23:59:59.000Z

195

Electricity Distribution  

Science Journals Connector (OSTI)

High voltage (HV) distribution grids have nominal voltages of up ... the grid that connects distribution to the transmission substations and also supplies large industrial customers requiri...

Toms Gmez

2013-01-01T23:59:59.000Z

196

CX-011256: Categorical Exclusion Determination | Department of...  

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

Determination CX-011256: Categorical Exclusion Determination Foundations for Engineer Education for Distributed Energy Resources CX(s) Applied: A9, A11 Date: 09162013...

197

Topology optimization of piezoelectric energy harvesting devices considering static and harmonic dynamic loads  

Science Journals Connector (OSTI)

A topology optimization (TO) procedure is developed to design optimal layouts for piezoelectric energy harvesting devices (EHDs) by considering the effect of static and harmonic dynamic mechanical loads. To determine the optimal material distributions ... Keywords: Energy harvesting device, Harmonic load, Piezoelectric material with penalization, Static load, Structural optimization, Topology optimization

Jin Yee Noh; Gil Ho Yoon

2012-11-01T23:59:59.000Z

198

Molecular beam studies of reaction dynamics  

SciTech Connect (OSTI)

Purpose of this research project is two-fold: (1) to elucidate detailed dynamics of simple elementary reactions which are theoretically important and to unravel the mechanism of complex chemical reactions or photo chemical processes which play an important role in many macroscopic processes and (2) to determine the energetics of polyatomic free radicals using microscopic experimental methods. Most of the information is derived from measurement of the product fragment translational energy and angular distributions using unique molecular beam apparati designed for these purposes.

Lee, Y.T.

1987-03-01T23:59:59.000Z

199

Distribution Workshop  

Broader source: Energy.gov [DOE]

On September 24-26, 2012, the GTT presented a workshop on grid integration on the distribution system at the Sheraton Crystal City near Washington, DC.

200

Distributed Delays Stabilize Ecological Feedback Systems  

Science Journals Connector (OSTI)

We consider the effect of distributed delays in predator-prey models and ecological food webs. Whereas the occurrence of delays in population dynamics is usually regarded a destabilizing factor leading to the extinction of species, we here demonstrate complementarily that delay distributions yield larger stability regimes than single delays. Food webs with distributed delays closely resemble nondelayed systems in terms of ecological stability measures. Thus, we state that dependence of dynamics on multiple instances in the past is an important, but so far underestimated, factor for stability in dynamical systems.

Christian W. Eurich; Andreas Thiel; Lorenz Fahse

2005-04-22T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Quantitatively Probing the Al Distribution in Zeolites  

SciTech Connect (OSTI)

The degree of substitution of Si4+ by Al3+ in the oxygen-terminated tetrahedra (Al T-sites) of zeolites determines the concentration of ion-exchange and Brnsted acid sites. As the location of the tetrahedra and the associated subtle variations in bond angles influence the acid strength, quantitative information about Al T-sites in the framework is critical to rationalize catalytic properties and to design new catalysts. A quantitative analysis is reported that uses a combination of extended X-ray absorption fine structure (EXAFS) analysis and 27Al MAS NMR spectroscopy supported by DFT-based molecular dynamics simulations. To discriminate individual Al atoms, sets of ab initio EXAFS spectra for various T-sites are generated from DFT-based molecular dynamics simulations allowing quantitative treatment of the EXAFS single- and multiple-photoelectron scattering processes out to 3-4 atom shells surrounding the Al absorption center. It is observed that identical zeolite types show dramatically different Al-distributions. A preference of Al for T-sites that are part of one or more 4-member rings in the framework over those T-sites that are part of only 5- and 6-member rings in the HBEA150 sample has been determined from a combination of these methods. This work was supported by the U. S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences.

Vjunov, Aleksei; Fulton, John L.; Huthwelker, Thomas; Pin, Sonia; Mei, Donghai; Schenter, Gregory K.; Govind, Niranjan; Camaioni, Donald M.; Hu, Jian Z.; Lercher, Johannes A.

2014-06-11T23:59:59.000Z

202

Marine Protists : : Distributions, Diversity and Dynamics  

E-Print Network [OSTI]

as well as the Guaymas Basin (Stiller et al. 2013). Onesampled in this study and by Stiller et al. (2013) is thatRAxML-Manual.7.0.4.pdf. Stiller J, Roussett V, Pleijel F,

Pasulka, Alexis Leah

2013-01-01T23:59:59.000Z

203

Dynamic Modeling and Resilience for Power Distribution  

E-Print Network [OSTI]

@gatech.edu jichuanyi@gatech.edu Floyd Galvan, Stephen Couvillon and George Orellana Entergy Services, Inc. New Orleans, LA 70053 Email: fgalvan@entergy.com scouvi1@entergy.com gorella@entergy.com Abstract

Ji, Chuanyi

204

Distributed computational fluid dynamics Karl Jenkins  

E-Print Network [OSTI]

of large and complex datasets. Thus, remote access to this information is an integral part of the CFD turbulent combustion pro- cesses is a strong coupling between turbulence, chemical kinetics and heat release provides a route around the departmental firewalls. The clusters run Globus and Condor for remote job

de Gispert, Adrià

205

Wealth Distribution  

Science Journals Connector (OSTI)

Walter: What is a just wealth distribution? In my view, it is one that results from respect for proper initial homesteading, for resulting private property rights, and, finally, from any legitimate subsequent ...

Four Arrows; Walter Block

2011-01-01T23:59:59.000Z

206

Special Distribution  

Office of Legacy Management (LM)

Special Distribution Special Distribution Issued: December 1977 ',, Radiological Survey and Decontamination of the Former Main Technical Area (TA-1) at Los Alamos, New Mexico Compiled by A. John Ahlquist Alan K. Stoker Linda K. Trocki c laboratory of, the University of California LOS ALAMOS, NEW MEXICO 87545 An Alfirmdve Action/Equal Opportunity Employer ..-_- .-- .--.-. c T -,--... _ _._-r..l __,.. - .-,_.. ..- _._ -- .--. " . . _ . - . c- - . . . _ -. . _ . - . - . _ - - n - _ _~ ~_. __ _ ~~_ --..&e+ L.';; CONTENTS ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._____ 1 EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._... _._ 2 I. BACKGROUND .............................................. 15

207

Parton Distributions for the LHC  

E-Print Network [OSTI]

We present a preliminary set of updated NLO parton distributions. For the first time we have a quantitative extraction of the strange quark and antiquark distributions and their uncertainties determined from CCFR and NuTeV dimuon cross sections. Additional jet data from HERA and the Tevatron improve our gluon extraction. Lepton asymmetry data and neutrino structure functions improve the flavour separation, particularly constraining the down quark valence distribution.

Thorne, R S; Stirling, W J; Watt, G

2007-01-01T23:59:59.000Z

208

CX-010493: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Determining Distribution Coefficients by Surface-Enhanced Raman Spectroscopy (SERS) CX(s) Applied: B3.6 Date: 05/14/2013 Location(s): South Carolina Offices(s): Savannah River Operations Office

209

Determination hydrophobic  

E-Print Network [OSTI]

of royalty provided that (1) each reproduction is done without alteration and (2) the Journal reference, of this paper may be copied or distributed royalty free without further permission by computer-based and other

Levitt, Michael

210

CX-001172: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Distributed Dynamic State Estimators, Generator Parameter Estimation and Stability Monitoring DemonstrationCX(s) Applied: B3.6, B5.1Date: 03/10/2010Location(s): Blenheim, New YorkOffice(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory

211

SciTech Connect: Taming the Grid: Dynamic Load Composition Quantificat...  

Office of Scientific and Technical Information (OSTI)

Taming the Grid: Dynamic Load Composition Quantification at the Distribution-Transformer Level Citation Details In-Document Search Title: Taming the Grid: Dynamic Load Composition...

212

CX-007625: Categorical Exclusion Determination | Department of...  

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

CX-007625: Categorical Exclusion Determination Flush Fire Water Distribution Lines to Remove Sediment CX(s) Applied: B1.3 Date: 01242012 Location(s): South Carolina...

213

Coal Distribution Database, 2006  

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

7 7 December 2008 2007 Changes in Coal Distribution Table Format and Data Sources The changes in the coal distribution data sources made in 2006 are carried over to the 2007 tables. As in 2006, EIA used data from the EIA-3 survey to distribute synfuel to the electric generation sector on a state level, aggregated with all of the other coal (such as bituminous, subbituminous, and lignite coal) sent to electric generating plants. EIA supplemented the EIA-3 data with previously collected information to determine the mode of transportation from the synfuel plant to the electric generating consumer, which was not reported on the EIA-3A survey form. Although not contained in the EIA-6A master file, this information has been documented in an ancillary spreadsheet in the EIA

214

Impacts of dynamic reactive power compensation devices on the performance of wind power generators  

Science Journals Connector (OSTI)

This paper investigates the main impacts of dynamic reactive power compensation devices on the performance of induction machine-based wind power generators. The dynamic reactive power compensation devices analysed are the SVC (Static Var Compensator) and the DSTATCOM (Distributed Static Synchronous Compensator). The usage of these devices as a power factor regulator or a voltage regulator is investigated. The technical factors analysed are small-signal voltage stability, transient stability and interactions with the anti-islanding protection system. The analyses are carried out by using a wind farm composed of 30 units of 1 MW induction generators. Such wind farm is connected to a 60 Hz, 33 kV distribution system. The results are a useful guideline to evaluate which control strategy and device are suitable for a determined application as well as to understand the dynamic interactions that can occur.

Walmir Freitas; Mauricio B.C. Salles; Jose C.M. Vieira; Andre Morelato; Luiz Carlos Pereira Da Silva; Vivaldo Fernando Da Costa

2005-01-01T23:59:59.000Z

215

CX-005321: Categorical Exclusion Determination | Department of...  

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

Categorical Exclusion Determination CX-005321: Categorical Exclusion Determination Boeing Distribution Management System (BDMS) CX(s) Applied: A1, A9, A11, B1.2, B1.7 Date: 0224...

216

CX-005326: Categorical Exclusion Determination | Department of...  

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

Categorical Exclusion Determination CX-005326: Categorical Exclusion Determination Boeing Distribution Management System (BDMS) CX(s) Applied: A1, A9, A11, B1.2, B1.7 Date: 0224...

217

CX-005325: Categorical Exclusion Determination | Department of...  

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

Categorical Exclusion Determination CX-005325: Categorical Exclusion Determination Boeing Distribution Management System (BDMS) CX(s) Applied: A1, A9, A11, B1.2, B1.7 Date: 0224...

218

CX-005324: Categorical Exclusion Determination | Department of...  

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

Categorical Exclusion Determination CX-005324: Categorical Exclusion Determination Boeing Distribution Management System (BDMS) CX(s) Applied: A1, A9, A11, B1.2, B1.7 Date: 0224...

219

DISTRIBUTION CATEGORY  

Office of Scientific and Technical Information (OSTI)

DISTRIBUTION CATEGORY DISTRIBUTION CATEGORY uc-11 I A W E N C E LIVERMORE IABORATORY University of Cahfmia/Livermore, California/94550 UCRL-52658 CALCULATION OF CHEMICAL EQUILIBRIUM BETWEEN AQUEOUS SOLUTION AND MINERALS: THE EQ3/6 - - SOFTWARE PACKAGE T. J. Wolery MS. date: February 1, 1979 . . - . . - . Tho rcpon rn prepared as an account of work sponsored by the United Stater Government. Seither Lhc Urutcd Stater nor the Umted Stater Department of Energy, nor any of their employees. nor any of their E O ~ ~ ~ B C I O I S . rubcontracton. o r their employees. makes any warranr)., exprcs or !mplwd. or assumes any legal liability or respanability io: the ~ c c u o c y . complctencn or uvfulneu of any miormarlon. apparatcr. product or p r o m s dtwlorcd. or r c p r e v n u that its UP would not infringe privately owned r

220

Delineating parton distributions and the strong coupling  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Global fits for precision determinations of parton distributions, together with the highly correlated strong coupling ?s, are presented up to next-to-next-to- leading order (NNLO) of QCD utilizing most world data (charm and jet production data are used where theoretically possible), except Tevatron gauge boson production data and LHC data which are left for genuine predictions. This is done within the 'dynamical' (valencelike input at Q02 = 0.8 GeV2 ) and 'standard' (input at Q02 = 2 GeV2) approach. The stability and reliability of the results are ensured by including nonperturbative higher-twist terms, nuclear corrections as well as target mass corrections, and by applying various (Q2, W2) cuts on available data. In addition, the Q02 dependence of the results is studied in detail. Predictions are given, in particular for LHC, on gauge and Higgs boson as well as for top-quark pair production. At NNLO the dynamical approach results in ?s(MZ2) = 0.1136 0.0004, whereas the somewhat less constrained standard fit gives ?s(MZ2) = 0.1162 0.0006.

Jimenez-Delgado, Pedro [JLAB; Reya, Edwald [Technische Universitat Dortmund

2014-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

A Task Context Aware Physical Distribution Knowledge Service System  

Science Journals Connector (OSTI)

A physical distribution task has typical characteristics of dynamic mobility: dynamic locations, time criticality, and environmental complexity. Research has focused on creating an environmental and task adaptive knowledge service system to support collaborative ... Keywords: Collaborative Physical Distribution, Context Awareness, Knowledge Services, Service Systems, Task Context

Liang Xiao, Yanli Pei

2011-01-01T23:59:59.000Z

222

Chemical dynamics in the gas phase: Time-dependent quantum mechanics of chemical reactions  

SciTech Connect (OSTI)

A major goal of this research is to obtain an understanding of the molecular reaction dynamics of three and four atom chemical reactions using numerically accurate quantum dynamics. This work involves: (i) the development and/or improvement of accurate quantum mechanical methods for the calculation and analysis of the properties of chemical reactions (e.g., rate constants and product distributions), and (ii) the determination of accurate dynamical results for selected chemical systems, which allow one to compare directly with experiment, determine the reliability of the underlying potential energy surfaces, and test the validity of approximate theories. This research emphasizes the use of recently developed time-dependent quantum mechanical methods, i.e. wave packet methods.

Gray, S.K. [Argonne National Laboratory, IL (United States)

1993-12-01T23:59:59.000Z

223

Nonperturbative short-range dynamics in TMDs  

SciTech Connect (OSTI)

This presentation covers: deep inelastic processes and transverse momentum distributions; chiral symmetry breaking, including the physical picture, the dynamical model, and parton distributions; partonic structures, including transverse momentum distributions, coordinate space correlator, and short range correlations; and measurements of semi-inclusive deep inelastic scattering, correlations, and multi-parton processes in pp interactions.

Weiss, Christian [JLAB

2013-05-01T23:59:59.000Z

224

Percent Distribution  

Gasoline and Diesel Fuel Update (EIA)

. . Percent Distribution of Natural Gas Supply and Disposition by State, 1996 Table State Estimated Proved Reserves (dry) Marketed Production Total Consumption Alabama................................................................... 3.02 2.69 1.48 Alaska ...................................................................... 5.58 2.43 2.04 Arizona..................................................................... NA 0 0.55 Arkansas.................................................................. 0.88 1.12 1.23 California.................................................................. 1.25 1.45 8.23 Colorado .................................................................. 4.63 2.90 1.40 Connecticut.............................................................. 0 0 0.58 D.C...........................................................................

225

Distributed Generation  

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

Untapped Value of Backup Generation Untapped Value of Backup Generation While new guidelines and regulations such as IEEE (Institute of Electrical and Electronics Engineers) 1547 have come a long way in addressing interconnection standards for distributed generation, utilities have largely overlooked the untapped potential of these resources. Under certain conditions, these units (primarily backup generators) represent a significant source of power that can deliver utility services at lower costs than traditional centralized solutions. These backup generators exist today in large numbers and provide utilities with another option to reduce peak load, relieve transmission congestion, and improve power reliability. Backup generation is widely deployed across the United States. Carnegie Mellon's Electricity

226

Surface Chemical Dynamics  

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

Surface Chemical Dynamics Surface Chemical Dynamics The goal of the Surface Chemical Dynamics Program is to elucidate the underlying physical processes that determine the products (selectivity) and yield (efficiency) of chemical transformations relevant to energy-related chemistry on catalytic and nanostructured surfaces. Achieving this end requires understanding the evolution of the reactant-molecule/surface complex as molecules adsorb, bonds dissociate, surface species diffuse, new bonds form and products desorb. The pathways and time scales of these processes are ultimately determined by a multidimensional potential energy surface that is a function of the geometric and electronic structures of the surface and the reactant, product, intermediate and transition-state molecular and atomic species.

227

Cluster Dynamics of Planetary Waves  

E-Print Network [OSTI]

The dynamics of nonlinear atmospheric planetary waves is determined by a small number of independent wave clusters consisting of a few connected resonant triads. We classified the different types of connections between neighboring triads that determine the general dynamics of a cluster. Each connection type corresponds to substantially different scenarios of energy flux among the modes. The general approach can be applied directly to various mesoscopic systems with 3-mode interactions, encountered in hydrodynamics, astronomy, plasma physics, chemistry, medicine, etc.

Elena Kartashova; Victor S. L'vov

2008-11-05T23:59:59.000Z

228

Percent Distribution  

Gasoline and Diesel Fuel Update (EIA)

. . Percent Distribution of Natural Gas Delivered to Consumers by State, 1996 Table State Residential Commercial Industrial Vehicle Fuel Electric Utilities Alabama..................................... 1.08 0.92 2.27 0.08 0.23 Alaska ........................................ 0.31 0.87 0.85 - 1.16 Arizona....................................... 0.53 0.92 0.30 3.91 0.70 Arkansas.................................... 0.88 0.98 1.59 0.11 1.24 California.................................... 9.03 7.44 7.82 43.11 11.64 Colorado .................................... 2.12 2.18 0.94 0.58 0.20 Connecticut................................ 0.84 1.26 0.37 1.08 0.38 D.C............................................. 0.33 0.52 - 0.21 - Delaware.................................... 0.19 0.21 0.16 0.04 0.86 Florida........................................

229

Distribution Category:  

Office of Legacy Management (LM)

- - Distribution Category: Remedial Action and Decommissioning Program (UC-70A) DOE/EV-0005/48 ANL-OHS/HP-84-104 ARGONNE NATIONAL LABORATORY 9700 South Cass Avenue Argonne, Illinois 60439 FORMERLY UTILIZED MXD/AEC SITES REMEDIAL ACTION PROGRAM RADIOLOGICAL SURVEY OF THE HARSHAW CHEMICAL COMPANY CLEVELAND. OHIO Prepared by R. A. Wynveen Associate Division Director, OHS W. H. Smith Senior Health Physicist C. M. Sholeen Health Physicist A. L. Justus Health Physicist K. F. Flynn Health Physicist Radiological Survey Group Health Physics Section Occupational Health and Safety Division April 1984 Work Performed under Budget Activity DOE KN-03-60-40 and ANL 73706 iii PREFACE AND EXECUTIVE SUMMARY This is one in a series of reports resulting from a program initiated

230

Dynamic heart-in-thorax phantom for functional SPECT  

SciTech Connect (OSTI)

We have designed and built a dynamic heart-in-thorax phantom to be used as a primary tool during the experimental verification of the performance of the quantitative dynamic functional imaging method we are developing for standard rotating single photon emission computed tomography (SPECT) cameras. The phantom consists of two independent parts (i) a dynamic heart model with the possibility of mounting {open_quotes}defects{close_quotes} inside it and (ii) a non-uniform thorax model with lungs and spinal cord, and uses the fact that the washout of a tracer by dilution is governed by a linear first order equation, the same type of equation as is used to model time-activity distribution in myocardial viability studies. Tests of the dynamic performance of the phantom in planar scanning mode have confirmed the validity of these assumptions. Also the preliminary results obtained in SPECT mode show that the values of characteristic times could be experimentally determined and that these values agreed well with the values preset on the phantom. We consider that the phantom is ready for extensive use in studies into development of the dynamic SPECT method.

Celler, A.; Lyster, D. [Vancouver Hospital and Health Sciences Centre (Canada); Farncombe, T. [Univ. of British Columbia, Vancouver (Canada)] [and others

1996-12-31T23:59:59.000Z

231

Determinants of Meme Popularity  

E-Print Network [OSTI]

Online social media have greatly affected the way in which we communicate with each other. However, little is known about what are the fundamental mechanisms driving dynamical information flow in online social systems. Here, we introduce a generative model for online sharing behavior and analytically show, using techniques from mathematical population genetics, that competition between memes for the limited resource of user attention leads to a type of self-organized criticality, with heavy-tailed distributions of meme popularity: a few memes "go viral" but the majority become only moderately popular. The time-dependent solutions of the model are shown to fit empirical micro-blogging data on hashtag usage, and to predict novel scaling features of the data. The presented framework, in contrast to purely empirical studies or simulation-based models, clearly distinguishes the roles of two distinct factors affecting meme popularity: the memory time of users and the connectivity structure of the social network.

Gleeson, James P; Baos, Raquel A; Moreno, Yamir

2015-01-01T23:59:59.000Z

232

Fission dynamics at low excitation energy  

Science Journals Connector (OSTI)

The mass asymmetry in the fission of U236 at low excitation energy is clarified by the analysis of the trajectories obtained by solving the Langevin equations for the shape degrees of freedom. It is demonstrated that the position of the peaks in the mass distribution of fission fragments is determined mainly by the saddle point configuration originating from the shell correction energy. The width of the peaks, on the other hand, results from the shape fluctuations close to the scission point caused by the random force in the Langevin equation. We have found out that the fluctuations between elongated and compact shapes are essential for the fission process. According to our results the fission does not occur with continuous stretching in the prolate direction, similarly to that observed in starch syrup, but is accompanied by the fluctuations between elongated and compact shapes. This picture presents a new viewpoint of fission dynamics and the splitting mechanism.

Y. Aritomo; S. Chiba; F. Ivanyuk

2014-11-18T23:59:59.000Z

233

Flicker attenuation and transfer study for induction generator integrated into distribution network  

Science Journals Connector (OSTI)

Abstract Squirrel-cage induction generators (IGs) are widely used in distributed generation (DG). When the voltage at the point of common coupling is fluctuant, the embedded IG will show the impedance characteristic with dynamic changes under the different fluctuation frequencies. In addition, the drive train of IG set has great impact on the voltage flicker attenuation. This paper observes the dynamic response of IG to the voltage flicker through the experiments and further defines the flicker attenuation factor and transfer coefficient. A linearization model of IG with two-mass equivalent drive train is constructed through comparing the impacts of different drive trains (such as diesel engine, wind turbine) on the voltage flicker attenuation. Then an analytical method is proposed to determine the dynamic impedance, attenuation factor, transfer coefficient and flicker limit for IG integrated into distribution network. The correctness of the proposed method is verified by the experimental tests and the dynamic simulation using the detailed model of IG set. The parameters sensitivities of drive train and generator to the voltage flicker attenuation effect are analyzed and discussed in the paper.

Qianggang Wang; Niancheng Zhou; Jizhong Zhu; Wei Yan; Shu Pan

2014-01-01T23:59:59.000Z

234

A Dynamic Model of Thundercloud Electric Fields  

Science Journals Connector (OSTI)

A dynamic interactive computer model of the electrical behavior of a thundercloud surrounded by the distributed atmosphere, earth, ionosphere circuit is described. The electrification mechanisms in the model are represented by current or voltage ...

John S. Nisbet

1983-12-01T23:59:59.000Z

235

Determining size-specific emission factors for environmental tobacco smoke  

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

Determining size-specific emission factors for environmental tobacco smoke Determining size-specific emission factors for environmental tobacco smoke particles Title Determining size-specific emission factors for environmental tobacco smoke particles Publication Type Journal Article Year of Publication 2003 Authors Klepeis, Neil E., Michael G. Apte, Lara A. Gundel, Richard G. Sextro, and William W. Nazaroff Journal Aerosol Science & Technology Volume 37 Start Page Chapter Pagination 780-790 Date Published October 2003 Abstract Because size is a major controlling factor for indoor airborne particle behavior, human particle exposure assessments will benefit from improved knowledge of size-specific particle emissions. We report a method of inferring size-specific mass emission factors for indoor sources that makes use of an indoor aerosol dynamics model, measured particle concentration time series data, and an optimization routine. This approach provides -- in addition to estimates of the emissions size distribution and integrated emission factors -- estimates of deposition rate, an enhanced understanding of particle dynamics, and information about model performance. We applied the method to size-specific environmental tobacco smoke (ETS) particle concentrations measured every minute with an 8-channel optical particle counter (PMS-LASAIR; 0.1-2+ micrometer diameters) and every 10 or 30 min with a 34-channel differential mobility particle sizer (TSI-DMPS; 0.01-1+ micrometer diameters) after a single cigarette or cigar was machine-smoked inside a low air-exchange rate 20m^3 chamber. The aerosol dynamics model provided good fits to observed concentrations when using optimized values of mass emission rate and deposition rate for each particle size range as input. Small discrepancies observed in the first 1-2 hours after smoking are likely due to the effect of particle evaporation, a process neglected by the model. Size-specific ETS particle emission factors were fit with log-normal distributions, yielding an average mass median diameter of 0.2 micrometers and an average geometric standard deviation of 2.3 with no systematic differences between cigars and cigarettes. The equivalent total particle emission rate, obtained by integrating each size distribution, was 0.2-0.7 mg/min for cigars and 0.7-0.9 mg/min for cigarettes

236

Biosystem Dynamics & Design | EMSL  

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

Biosystem Dynamics & Design Overview Atmospheric Aerosol Systems Biosystem Dynamics & Design Energy Materials & Processes Terrestrial & Subsurface Ecosystems Biosystem Dynamics &...

237

Distributed Parallel Particle Advection using Work Requesting  

SciTech Connect (OSTI)

Particle advection is an important vector field visualization technique that is difficult to apply to very large data sets in a distributed setting due to scalability limitations in existing algorithms. In this paper, we report on several experiments using work requesting dynamic scheduling which achieves balanced work distribution on arbitrary problems with minimal communication overhead. We present a corresponding prototype implementation, provide and analyze benchmark results, and compare our results to an existing algorithm.

Muller, Cornelius; Camp, David; Hentschel, Bernd; Garth, Christoph

2013-09-30T23:59:59.000Z

238

The Metallicity Distribution of Intracluster Stars in Virgo  

E-Print Network [OSTI]

We have used the Hubble Space Telescope's Advanced Camera for Surveys (ACS) to detect and measure ~5300 stars in a single intracluster field in the Virgo Cluster. By performing F606W and F814W photometry on these stars, we have determined their metallicity distribution function, and constrained the types of stars present in this portion of Virgo's intracluster space. Based on the small number of stars detected brighter than the red giant branch (RGB) tip, we suggest that in this region, Virgo's intracluster stars are mostly old (>~10 Gyr). Through analysis of the RGB stars themselves, we determine that the population contains the full range of metallicities probed (-2.3-0.5. The spatial distribution of the most metal-poor stars in the field shows significantly more structure than that of the metal-rich stars, indicating that the intracluster population is not well-mixed. We discuss the implications these observations have for the production of intracluster stars and the dynamical evolution of the Virgo Cluster.

Benjamin F. Williams; Robin Ciardullo; Patrick R. Durrell; Matt Vinciguerra; John J. Feldmeier; George H. Jacoby; Steinn Sigurdsson; Ted von Hippel; Henry C. Ferguson; Nial R. Tanvir; Magda Arnaboldi; Ortwin Gerhard; J. Alfonso L. Aguerri; Ken Freeman

2006-10-12T23:59:59.000Z

239

Western Red-tailed Skink Distribution in Southern Nevada  

SciTech Connect (OSTI)

This slide show reports a study to: determine Western Red-tailed Skink (WRTS) distribution on Nevada National Security Site (NNSS); identify habitat where WRTS occur; learn more about WRTS natural history; and document distribution of other species.

Hall, D. B. and Gergor, P. D.

2011-11-01T23:59:59.000Z

240

CX-005446: Categorical Exclusion Determination | Department of...  

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

Categorical Exclusion Determination Plug and Play Distributed Power Systems for Smart-Grid Connected Buildings CX(s) Applied: A9, B2.2, B5.1 Date: 03172011 Location(s):...

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Lattice Boltzmann scheme for fluids with dynamic heterogeneities  

Science Journals Connector (OSTI)

We introduce and discuss a three-dimensional mesoscopic lattice Boltzmann model for the numerical simulation of strongly-interacting fluids with dynamic inhomogeneities. The model is based on an extension of the standard lattice Boltzmann dynamics in which streaming between neighboring lattice sites is constrained by the value of the nonlocal density of the surrounding fluid. The resulting dynamics exhibits typical features of dynamically heterogeneous fluids, such as long-time relaxation, non-Gaussian density distributions and dynamic heterogeneities. Due to its intrinsically parallel dynamics and absence of statistical noise, the method is expected to compute significantly faster than molecular dynamics, Monte Carlo, and lattice glass models.

A. Lamura and S. Succi

2006-06-28T23:59:59.000Z

242

Unifying distribution functions: some lesser known distributions  

E-Print Network [OSTI]

We show that there is a way to unify distribution functions that describe simultaneously a signal in space and (spatial) frequency. Probably the most known of them is the Wigner distribution function. Here we show how to unify functions of the Cohen class, Rihacek's complex energy function, Husimi and Glauber-Sudarshan distribution functions.

Moya-Cessa, J R; Berriel-Valdos, L R; Aguilar-Loreto, O; Barberis-Blostein, P

2008-01-01T23:59:59.000Z

243

Cooperative Fault Tolerant Distributed Computing  

SciTech Connect (OSTI)

HARNESS was proposed as a system that combined the best of emerging technologies found in current distributed computing research and commercial products into a very flexible, dynamically adaptable framework that could be used by applications to allow them to evolve and better handle their execution environment. The HARNESS system was designed using the considerable experience from previous projects such as PVM, MPI, IceT and Cumulvs. As such, the system was designed to avoid any of the common problems found with using these current systems, such as no single point of failure, ability to survive machine, node and software failures. Additional features included improved inter-component connectivity, with full support for dynamic down loading of addition components at run-time thus reducing the stress on application developers to build in all the libraries they need in advance.

Fagg, Graham E.

2006-03-15T23:59:59.000Z

244

A distributed boundary detection algorithm for multi-robot systems  

E-Print Network [OSTI]

We describe a distributed boundary detection algorithm suitable for use on multi-robot systems with dynamic network topologies. We assume that each robot has access to its local network geometry, which is the combination ...

McLurkin, James

245

Dynamic changes in the distribution and time course of bloodbrain barrier-permeative nitroxides in the mouse head with EPR imaging: visualization of blood flow in a mouse model of ischemia  

Science Journals Connector (OSTI)

Abstract Electron paramagnetic resonance (EPR) imaging using nitroxides as redox-sensitive probes is a powerful, noninvasive method that can be used under various physiological conditions to visualize changes in redox status that result from oxidative damage. Two bloodbrain barrier-permeative nitroxides, 3-hydroxymethyl-2,2,5,5-tetramethylpyrrolidine-1-oxyl (HMP) and 3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine-1-yloxy (MCP), have been widely used as redox-sensitive probes in the brains of small animals, but their in vivo distribution and properties have not yet been analyzed in detail. In this study, a custom-made continuous-wave three-dimensional (3D) EPR imager was used to obtain 3D EPR images of mouse heads using MCP or HMP. This EPR imager made it possible to take 3D EPR images reconstructed from data from 181 projections acquired every 60s. Using this improved EPR imager and magnetic resonance imaging, the distribution and reduction time courses of HMP and MCP were examined in mouse heads. EPR images of living mice revealed that HMP and MCP have different distributions and different time courses for entering the brain. Based on the pharmacokinetics of the reduction reactions of HMP and MCP in the mouse head, the half-lives of HMP and MCP were clearly and accurately mapped pixel by pixel. An ischemic mouse model was prepared, and the half-life of MCP was mapped in the mouse head. Compared to the half-life in control mice, the half-life of MCP in the ischemic model mouse brain was significantly increased, suggesting a shift in the redox balance. This in vivo EPR imaging method using BBB-permeative MCP is a useful noninvasive method for assessing changes in the redox status in mouse brains under oxidative stress.

Miho C. Emoto; Hideo Sato-Akaba; Hiroshi Hirata; Hirotada G. Fujii

2014-01-01T23:59:59.000Z

246

DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL  

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

DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL SIZE DISTRIBUTION FROM MEASUREMENTS OF LIGHT TRANSMITTANCE AND SCATTERING Ernie R. Lewis and Stephen E. Schwartz Brookhaven National Laboratory, Upton, NY 11933 ses@bnl.gov elewis@bnl.gov MOMENTS FROM MEASUREMENTS As each of the measured quantities is linear in the size distribution dn/dr, it is possible to construct linear combinations of measurements that yield

247

Distributed Energy Communications & Controls, Lab Activities - Summary  

SciTech Connect (OSTI)

The purpose is to develop controls for inverter-based renewable and non-renewable distributed energy systems to provide local voltage, power and power quality support for loads and the power grid. The objectives are to (1) develop adaptive controls for inverter-based distributed energy (DE) systems when there are multiple inverters on the same feeder and (2) determine the impact of high penetration high seasonal energy efficiency ratio (SEER) air conditioning (A/C) units on power systems during sub-transmission faults which can result in an A/C compressor motor stall and assess how inverter-based DE can help to mitigate the stall event. The Distributed Energy Communications & Controls Laboratory (DECC) is a unique facility for studying dynamic voltage, active power (P), non-active power (Q) and power factor control from inverter-based renewable distributed energy (DE) resources. Conventionally, inverter-based DE systems have been designed to provide constant, close to unity power factor and thus not provide any voltage support. The DECC Lab interfaces with the ORNL campus distribution system to provide actual power system testing of the controls approach. Using mathematical software tools and the DECC Lab environment, we are developing and testing local, autonomous and adaptive controls for local voltage control and P & Q control for inverter-based DE. We successfully tested our active and non-active power (P,Q) controls at the DECC laboratory along with voltage regulation controls. The new PQ control along with current limiter controls has been tested on our existing inverter test system. We have tested both non-adaptive and adaptive control modes for the PQ control. We have completed several technical papers on the approaches and results. Electric power distribution systems are experiencing outages due to a phenomenon known as fault induced delayed voltage recovery (FIDVR) due to air conditioning (A/C) compressor motor stall. Local voltage collapse from FIDVR is occurring in part because modern air-conditioner and heat pump compressor motors are much more susceptible to stalling during a voltage sag or dip than older motors. These motors can stall in less than three cycles (0.05 s) when a fault, for example, on the sub-transmission system, causes voltage on the distribution system to sag to 70% or less of nominal. We completed a new test system for A/C compressor motor stall testing at the DECC Lab. The A/C Stall test system is being used to characterize when and how compressor motors stall under low voltage and high compressor pressure conditions. However, instead of using air conditioners, we are using high efficiency heat pumps. We have gathered A/C stall characterization data for both sustained and momentary voltage sags of the test heat pump. At low enough voltage, the heat pump stalls (compressor motor stops and draws 5-6 times normal current in trying to restart) due to low inertia and low torque of the motor. For the momentary sag, we are using a fast acting contactor/switch to quickly switch from nominal to the sagged voltage in cycles.

Rizy, D Tom [ORNL

2010-01-01T23:59:59.000Z

248

Water-Peptide Dynamics during Conformational Transitions Dmitry Nerukh*,  

E-Print Network [OSTI]

Water-Peptide Dynamics during Conformational Transitions Dmitry Nerukh*, and Sergey Karabasov are investigated using classical molecular dynamics simulation with explicit water molecules. The distribution of the surrounding water at different moments before the transitions and the dynamical correlations of water

Nerukh, Dmitry

249

Event-Based Approach to Modelling Dynamic Architecture  

E-Print Network [OSTI]

Event-Based Approach to Modelling Dynamic Architecture: Application to Mobile Ad-Hoc Network.Attiogbe@univ-nantes.fr Abstract. We describe an event-based approach to specifiy systems with dynamically evolving architecture tools. Keywords: Specification, Verification, Dynamic Architecture, Event B. 1 Introduction Distributed

Paris-Sud XI, Université de

250

Introduction Basic dynamics  

E-Print Network [OSTI]

Introduction Basic dynamics The Gulf Stream The thermohaline circulation Ocean currents: some Ocean currents: some misconceptions and some dynamics #12;Introduction Basic dynamics The Gulf Stream. Geosciences Ocean currents: some misconceptions and some dynamics #12;Introduction Basic dynamics The Gulf

LaCasce, Joseph H.

251

A Dynamical Approach to Temperature  

E-Print Network [OSTI]

We present a new dynamical approach for measuring the temperature of a Hamiltonian dynamical system in the micro canonical ensemble of thermodynamics. We show that under the hypothesis of ergodicity the temperature can be computed as a time-average of the functional, div(grad H/|grad H|^2), on the energy-surface. Our method not only yields an efficient computational approach for determining the temperature it also provides an intrinsic link between dynamical systems theory and the statistical mechanics of Hamiltonian systems.

Hans Henrik Rugh

1997-01-30T23:59:59.000Z

252

Longitudinal Dynamics and Tomography in the Tevatron  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Motivated by the desire to understand the longitudinal effects of beam-beam forces, we study the longitudinal dynamics of protons and anti-protons at injection and top energy in the Tevatron. Multi-turn data of the longitudinal profiles are captured to reveal information about frequencies of oscillation, and changes in the bunch distributions. Tomographic reconstruction is used to create phase space maps which are subsequently used to find the momentum distributions. Changes in these distributions for both proton and anti-proton beams are also followed through the operational cycle. We report on the details of interesting dynamics and some unexpected findings.

Stogin, J [Princeton U.; Sen, T [Fermilab; Moore, R S [Fermilab

2012-01-10T23:59:59.000Z

253

Planning of distribution networks for medium voltage and low voltage.  

E-Print Network [OSTI]

??Determination of the placement and rating of transformers and feeders are the main objective of the basic distribution network planning. The bus voltage and the (more)

Ziari, Iman

2011-01-01T23:59:59.000Z

254

Annual Coal Distribution Report  

Gasoline and Diesel Fuel Update (EIA)

Distribution Report Release Date: December 19, 2013 | Next Release Date: December 12, 2014 | full report | RevisionCorrection Revision to the Annual Coal Distribution Report...

255

Distribution Grid Integration  

Broader source: Energy.gov [DOE]

The DOE Systems Integration team funds distribution grid integration research and development (R&D) activities to address the technical issues that surround distribution grid planning,...

256

Regional Dynamics Model (REDYN) | Open Energy Information  

Open Energy Info (EERE)

Regional Dynamics Model (REDYN) Regional Dynamics Model (REDYN) Jump to: navigation, search Tool Summary Name: REDYN Agency/Company /Organization: Regional Dynamics Inc. Sector: Energy Phase: Determine Baseline, "Evaluate Options and Determine Feasibility" is not in the list of possible values (Bring the Right People Together, Create a Vision, Determine Baseline, Evaluate Options, Develop Goals, Prepare a Plan, Get Feedback, Develop Finance and Implement Projects, Create Early Successes, Evaluate Effectiveness and Revise as Needed) for this property., Develop Goals Topics: Market analysis, Policies/deployment programs, Co-benefits assessment, - Macroeconomic Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.regionaldynamics.com/

257

Hydration water dynamics and instigation of protein structuralrelaxation  

SciTech Connect (OSTI)

Until a critical hydration level is reached, proteins do not function. This critical level of hydration is analogous to a similar lack of protein function observed for temperatures below a dynamical temperature range of 180-220K that also is connected to the dynamics of protein surface water. Restoration of some enzymatic activity is observed in partially hydrated protein powders, sometimes corresponding to less than a single hydration layer on the protein surface, which indicates that the dynamical and structural properties of the surface water is intimately connected to protein stability and function. Many elegant studies using both experiment and simulation have contributed important information about protein hydration structure and timescales. The molecular mechanism of the solvent motion that is required to instigate the protein structural relaxation above a critical hydration level or transition temperature has yet to be determined. In this work we use experimental quasi-elastic neutron scattering (QENS) and molecular dynamics simulation to investigate hydration water dynamics near a greatly simplified protein system. We consider the hydration water dynamics near the completely deuterated N-acetyl-leucine-methylamide (NALMA) solute, a hydrophobic amino acid side chain attached to a polar blocked polypeptide backbone, as a function of concentration between 0.5M-2.0M under ambient conditions. We note that roughly 50-60% of a folded protein's surface is equally distributed between hydrophobic and hydrophilic domains, domains whose lengths are on the order of a few water diameters, that justify our study of hydration dynamics of this simple model protein system. The QENS experiment was performed at the NIST Center for Neutron Research, using the disk chopper time of flight spectrometer (DCS). In order to separate the translational and rotational components in the spectra, two sets of experiments were carried out using different incident neutron wavelengths of 7.5{angstrom} and 5.5{angstrom} to give two different time resolutions. All the spectra have been measure at room temperature. The spectra were corrected for the sample holder contribution and normalized using the vanadium standard. The resulting data were analyzed with DAVE programs (http://www.ncnr.nist.gov/dave/). The AMBER force field and SPCE water model were used for modeling the NALMA solute and water, respectively. For the analysis of the water dynamics in the NALMA aqueous solutions, we performed simulations of a dispersed solute configuration consistent with our previous structural analysis, where we had primarily focused on the structural organization of these peptide solutions and their connection to protein folding. Further details of the QENS experiment and molecular dynamics simulations are reported elsewhere.

Russo, Daniela; Hura, Greg; Head-Gordon, Teresa

2003-09-01T23:59:59.000Z

258

Distributed Approaches for Determination of Reconfiguration Algorithm Termination  

E-Print Network [OSTI]

, Karl Schoder, Ali Feliachi, Hong-Jian Lai Advanced Power and Electricity Research Center, West Virginia University Morgantown, WV 26506-6109 Abstract-- The automatic reconfiguration of electric shipboard power systems is an important step toward improved fight- through and self-healing capabilities of all-electric

Lai, Hong-jian

259

Left-Ventricular Shape Determines Intramyocardial Stroke Work Distribution  

Science Journals Connector (OSTI)

The left-ventricle often undergoes large shape changes in the remodelling process, which is now considered to be an important indication of disease progression. Therefore, the influence on intramyocardial work...

Hon Fai Choi; Frank E. Rademakers

2011-01-01T23:59:59.000Z

260

Abstract--This paper proposes an effective VAR planning based on reactive power margin for the enhancement of dynamic  

E-Print Network [OSTI]

networks. Distributed generation based on renewable energy sources offers a promising solution1 Abstract-- This paper proposes an effective VAR planning based on reactive power margin for the enhancement of dynamic voltage stability in distribution networks with distributed wind generation

Pota, Himanshu Roy

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Flow distribution in a solar collector panel with horizontally inclined absorber strips  

Science Journals Connector (OSTI)

The objective of this work is to theoretically and experimentally investigate the flow and temperature distribution in a solar collector panel with an absorber consisting of horizontally inclined strips. Fluid flow and heat transfer in the collector panel are studied by means of computational fluid dynamics (CFD) calculations. Further, experimental investigations of a 12.5m2 solar collector panel with 16 parallel connected horizontal fins are carried out. The flow distribution through the absorber is evaluated by means of temperature measurements on the backside of the absorber tubes. The measured temperatures are compared to the temperatures determined by the CFD model and there is a good similarity between the measured and calculated results. Calculations with the CFD model elucidate the flow and temperature distribution in the collector. The influences of different operating conditions such as flow rate, properties of solar collector fluid, solar collector fluid inlet temperature and collector tilt angle are shown. The flow distribution through the absorber fins is uniform if high flow rates are used. By decreased flow rate and decreased content of glycol in the glycol/water mixture used as solar collector fluid, and by increased collector tilt and inlet temperature, the flow distribution gets worse resulting in an increased risk of boiling in the upper part of the collector panel.

Jianhua Fan; Louise Jivan Shah; Simon Furbo

2007-01-01T23:59:59.000Z

262

Determination of Longitudinal Dispersion Coefficient and Net  

E-Print Network [OSTI]

climatically forced variables (e.g., changes in freshwater runoff) as well as spills of contaminants related play important roles in determining the movement and change in concentration of contaminants discharged the change in the second moment of the tracer distribution with time, we determined the mean longitudinal

Ho, David

263

" A Heterodyne Laser-induced Fluorescence Technique to Determine  

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

A Heterodyne Laser-induced Fluorescence Technique to Determine A Heterodyne Laser-induced Fluorescence Technique to Determine Simultaneously the Bulk and Time Varying Molecule Velocity Distribution." Inventors Ahmed Diallo, Stephane Mazouffre.The method's primary goal is to determine simultaneously the bulk a The method's primary goal is to determine simultaneously the bulk and the time verying part of the molecule velocity distribution using a heterodyne laser induced fluorescence technique. Used in biology, chemistry and plasma physics laser-induced fluorescence is a well known technique to resolve the bulk velocity distribution of probed molecules and atoms in a medium. The novel approach is aimed at determining not only the bulk distribution, but also the time-varying velocity distribution. The two parts of the velocity distribution are key in the characterization of a

264

Fairness and dynamic pricing: comments  

SciTech Connect (OSTI)

In ''The Ethics of Dynamic Pricing,'' Ahmad Faruqui lays out a case for improved efficiency in using dynamic prices for retail electricity tariffs and addresses various issues about the distributional effects of alternative pricing mechanisms. The principal contrast is between flat or nearly constant energy prices and time-varying prices that reflect more closely the marginal costs of energy and capacity. The related issues of fairness criteria, contracts, risk allocation, cost allocation, means testing, real-time pricing, and ethical policies of electricity market design also must be considered. (author)

Hogan, William W.

2010-07-15T23:59:59.000Z

265

Model system for slow dynamics  

Science Journals Connector (OSTI)

Systems whose dynamics are described by a quasilogarithmic or stretched-exponential time dependence are usually fitted by models which use disorder to create a distribution of relaxation times. Here we describe a model which decays slowly towards equilibrium but does not require disorder to provide the slow dynamics. The model consists of a spin system with the spins interacting via the dipole-dipole interaction. The model is able to replicate the more pronounced features observed in the magnetization decay of magnetic systems and high-temperature superconductors.

D. K. Lottis; R. M. White; E. Dan Dahlberg

1991-07-15T23:59:59.000Z

266

A Smart Energy System: Distributed Resource Management, Control and Optimization  

E-Print Network [OSTI]

A Smart Energy System: Distributed Resource Management, Control and Optimization Yong Ding, Student of distributed energy resource and consumption management, which proposes to design a networked and embedded platform for realizing a dynamic energy mix and optimizing the energy consumption dy- namically. Based

Beigl, Michael

267

Symbolic dynamics  

E-Print Network [OSTI]

This chapter presents some of the links between automata theory and symbolic dynamics. The emphasis is on two particular points. The first one is the interplay between some particular classes of automata, such as local automata and results on embeddings of shifts of finite type. The second one is the connection between syntactic semigroups and the classification of sofic shifts up to conjugacy.

Bal, M -P; Eilers, S; Perrin, D

2010-01-01T23:59:59.000Z

268

SDI: Statistical dynamic interactions  

SciTech Connect (OSTI)

We focus on the combined statistical and dynamical aspects of heavy ion induced reactions. The overall picture is illustrated by considering the reaction {sup 36}Ar + {sup 238}U at a projectile energy of 35 MeV/nucleon. We illustrate the time dependent bound excitation energy due to the fusion/relaxation dynamics as calculated with the Boltzmann master equation. An estimate of the mass, charge and excitation of an equilibrated nucleus surviving the fast (dynamic) fusion-relaxation process is used as input into an evaporation calculation which includes 20 heavy fragment exit channels. The distribution of excitations between residue and clusters is explicitly calculated, as is the further deexcitation of clusters to bound nuclei. These results are compared with the exclusive cluster multiplicity measurements of Kim et al., and are found to give excellent agreement. We consider also an equilibrated residue system at 25% lower initial excitation, which gives an unsatisfactory exclusive multiplicity distribution. This illustrates that exclusive fragment multiplicity may provide a thermometer for system excitation. This analysis of data involves successive binary decay with no compressional effects nor phase transitions. Several examples of primary versus final (stable) cluster decay probabilities for an A = 100 nucleus at excitations of 100 to 800 MeV are presented. From these results a large change in multifragmentation patterns may be understood as a simple phase space consequence, invoking neither phase transitions, nor equation of state information. These results are used to illustrate physical quantities which are ambiguous to deduce from experimental fragment measurements. 14 refs., 4 figs.

Blann, M.; Mustafa, M.G. (Lawrence Livermore National Lab., CA (USA)); Peilert, G.; Stoecker, H.; Greiner, W. (Frankfurt Univ. (Germany, F.R.). Inst. fuer Theoretische Physik)

1991-04-01T23:59:59.000Z

269

Nonstatistical dynamics on the caldera  

E-Print Network [OSTI]

We explore both classical and quantum dynamics of a model potential exhibiting a caldera: that is, a shallow potential well with two pairs of symmetry related index one saddles associated with entrance/exit channels. Classical trajectory simulations at several different energies confirm the existence of the `dynamical matching' phenomenon originally proposed by Carpenter, where the momentum direction associated with an incoming trajectory initiated at a high energy saddle point determines to a considerable extent the outcome of the reaction (passage through the diametrically opposing exit channel). By studying a `stretched' version of the caldera model, we have uncovered a generalized dynamical matching: bundles of trajectories can reflect off a hard potential wall so as to end up exiting predominantly through the transition state opposite the reflection point. We also investigate the effects of dissipation on the classical dynamics. In addition to classical trajectory studies, we examine the dynamics of quantum wave packets on the caldera potential (stretched and unstretched). These computations reveal a quantum mechanical analogue of the `dynamical matching' phenomenon, where the initial expectation value of the momentum direction for the wave packet determines the exit channel through which most of the probability density passes to product.

Peter Collins; Zeb C. Kramer; Barry K. Carpenter; Gregory S. Ezra; Stephen Wiggins

2014-05-09T23:59:59.000Z

270

A marketplace game with neither distribution costs nor distribution-capacity constraints  

E-Print Network [OSTI]

neither distribution costs nor distribution-capacity constraints. II. THE CLEARING PRICE FOR LINEAR DEMAND-RESPONSE-sensitive demand. In turn, based on this demand response, the suppliers determine their optimal prices). We model aggregate consumer demand to be linear in response to clearing price1, D() = Dmax(1-/max

Squicciarini, Anna Cinzia

271

Parton distributions with LHC data  

E-Print Network [OSTI]

We present the first determination of parton distributions of the nucleon at NLO and NNLO based on a global data set which includes LHC data: NNPDF2.3. Our data set includes, besides the deep inelastic, Drell-Yan, gauge boson production and jet data already used in previous global PDF determinations, all the relevant LHC data for which experimental systematic uncertainties are currently available: ATLAS and LHCb W and Z lepton rapidity distributions from the 2010 run, CMS W electron asymmetry data from the 2011 run, and ATLAS inclusive jet cross-sections from the 2010 run. We introduce an improved implementation of the FastKernel method which allows us to fit to this extended data set, and also to adopt a more effective minimization methodology. We present the NNPDF2.3 PDF sets, and compare them to the NNPDF2.1 sets to assess the impact of the LHC data. We find that all the LHC data are broadly consistent with each other and with all the older data sets included in the fit. We present predictions for various standard candle cross-sections, and compare them to those obtained previously using NNPDF2.1, and specifically discuss the impact of ATLAS electroweak data on the determination of the strangeness fraction of the proton. We also present collider PDF sets, constructed using only data from HERA, Tevatron and LHC, but find that this data set is neither precise nor complete enough for a competitive PDF determination.

Richard D. Ball; Valerio Bertone; Stefano Carrazza; Christopher S. Deans; Luigi Del Debbio; Stefano Forte; Alberto Guffanti; Nathan P. Hartland; Jose I. Latorre; Juan Rojo; Maria Ubiali

2012-07-05T23:59:59.000Z

272

Dynamic Fracture Toughness of Polymer Composites  

E-Print Network [OSTI]

that of defense or transport. In this project, the focus is on determining dynamic fracture toughness property of fiber reinforced polymer composites by using a combined numerical- experimental methodology. Impact tests are conducted on Split-Hopkinson pressure...

Harmeet Kaur

2012-02-14T23:59:59.000Z

273

High-Performance, Power-Aware Distributed Computing for Scientific Applications  

Science Journals Connector (OSTI)

The PowerPack framework enables distributed systems to profile, analyze, and conserve energy in scientific applications using dynamic voltage scaling. For one common benchmark, the framework achieves more than 30 percent energy savings with minimal performance ... Keywords: Power-aware computing, Distributed systems, Dynamic voltage scaling, PowerPack framework

Kirk W. Cameron; Rong Ge; Xizhou Feng

2005-11-01T23:59:59.000Z

274

Coal Distribution Database, 2006  

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

2009 Final February 2011 2 Overview of 2009 Coal Distribution Tables Introduction The Coal Distribution Report - Annual provides detailed information on domestic coal distribution by origin state, destination state, consumer category, and method of transportation. Also provided is a summary of foreign coal distribution by coal-producing State. This Final 2009 Coal Distribution Report - Annual, supersedes the data contained in the four Quarterly Coal Distribution Reports previously issued for 2009. This report relies on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. In addition, the report

275

A Dynamic Management Framework for Security Policies in Open Grid Computing Environments  

Science Journals Connector (OSTI)

A computational grid is a kind of open and distributed ... dynamic virtual organization (VO) membership. Dynamic security policy management for multiple VOs in grids is challenging due to the heterogeneous nature...

Chiu-Man Yu; Kam-Wing Ng

2004-01-01T23:59:59.000Z

276

Generalized Kapchinskij-Vladimirskij Distribution and Envelope Equation for High-Intensity Beams in a Coupled Transverse Focusing Lattice  

SciTech Connect (OSTI)

In an uncoupled lattice, the Kapchinskij-Vladimirskij (KV) distribution function first analyzed in 1959 is the only known exact solution of the nonlinear Vlasov-Maxwell equations for high-intensity beams including self-fields in a self-consistent manner. The KV solution is generalized here to high-intensity beams in a coupled transverse lattice using the recently developed generalized Courant-Snyder invariant for coupled transverse dynamics. This solution projects to a rotating, pulsating elliptical beam in transverse configuration space, determined by the generalized matrix envelope equation.

Qin Hong; Davidson, Ronald C. [Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States); Chung, Moses [Accelerator Physics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)

2009-11-27T23:59:59.000Z

277

Generalized Kapchinskij-Vladimirskij Distribution and Envelope Equation for High-intensity Beams in a Coupled Transverse Focusing Lattice  

SciTech Connect (OSTI)

In an uncoupled lattice, the Kapchinskij-Vladimirskij (KV) distribution function first analyzed in 1959 is the only known exact solution of the nonlinear Vlasov-Maxwell equations for high- intensity beams including self-fields in a self-consistent manner. The KV solution is generalized here to high-intensity beams in a coupled transverse lattice using the recently developed generalized Courant-Snyder invariant for coupled transverse dynamics. This solution projects to a rotating, pulsating elliptical beam in transverse configuration space, determined by the generalized matrix envelope equation.

Hong Qin, Moses Chung, and Ronald C. Davidson

2009-11-20T23:59:59.000Z

278

Optimal allocation of stochastically dependent renewable energy based distributed generators in unbalanced distribution networks  

Science Journals Connector (OSTI)

Abstract This paper proposes an algorithm for modeling stochastically dependent renewable energy based distributed generators for the purpose of proper planning of unbalanced distribution networks. The proposed algorithm integrate the diagonal band Copula and sequential Monte Carlo method in order to accurately consider the multivariate stochastic dependence between wind power, photovoltaic power and the system demand. Secondly, an efficient algorithm based on modification of the traditional Big Bang-Big crunch method is proposed for optimal placement of renewable energy based distributed generators in the presence of dispatchable distributed generation. The proposed optimization algorithm aims to minimize the energy loss in unbalanced distribution systems by determining the optimal locations of non-dispatchable distributed generators and the optimal hourly power schedule of dispatchable distributed generators. The proposed algorithms are implemented in MATLAB environment and tested on the IEEE 37-node feeder. Several case studies are done and the subsequent discussions show the effectiveness of the proposed algorithms.

A.Y. Abdelaziz; Y.G. Hegazy; Walid El-Khattam; M.M. Othman

2015-01-01T23:59:59.000Z

279

Patterns, determinants and models of woody plant diversity in China  

Science Journals Connector (OSTI)

...determine the distributions of species and...mean monthly temperature. RAIN is the...tolerate the low temperature of C to C...and vegetation distributions has long been...Fang 2009 Temperature dependence...plants in China: distribution and climate...Zhou, H. Sun, D. Z. Li...

2011-01-01T23:59:59.000Z

280

Coal Distribution Database, 2006  

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

Domestic Distribution of U.S. Coal by Origin State, Domestic Distribution of U.S. Coal by Origin State, Consumer, Destination and Method of Transportation, 2009 Final February 2011 2 Overview of 2009 Coal Distribution Tables Introduction The Coal Distribution Report - Annual provides detailed information on domestic coal distribution by origin state, destination state, consumer category, and method of transportation. Also provided is a summary of foreign coal distribution by coal-producing State. This Final 2009 Coal Distribution Report - Annual, supersedes the data contained in the four Quarterly Coal Distribution Reports previously issued for 2009. This report relies on the most current data available from EIA's various monthly, quarterly and annual surveys

Note: This page contains sample records for the topic "determination distributed dynamic" 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

CONSULTANT REPORT DISTRIBUTED GENERATION  

E-Print Network [OSTI]

Energy Jobs Plan, Governor Brown established a 2020 goal of 12,000 megawatts of localized renewable energy development, or distributed generation, in California. In May 2012, Southern California Edison, renewables, interconnection, integration, electricity, distribution, transmission, costs. Please use

282

Distributed Wind 2015  

Broader source: Energy.gov [DOE]

Distributed Wind 2015 is committed to the advancement of both distributed and community wind energy. This two day event includes a Business Conference with sessions focused on advancing the...

283

Introduction Dynamic Risk Measures  

E-Print Network [OSTI]

Introduction Dynamic Risk Measures Dynamic Risk Measures from BMO martingales Bid-Ask Dynamic Pricing Procedure Conclusion MESURES DE RISQUE DYNAMIQUES DYNAMIC RISK MEASURES Jocelyne Bion-Nadal CNRS Risk Measures Dynamic Risk Measures from BMO martingales Bid-Ask Dynamic Pricing Procedure Conclusion

Bion-Nadal, Jocelyne

284

Goodman Manufacturing: Noncompliance Determination (2011-SE-4301) |  

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

Noncompliance Determination (2011-SE-4301) Noncompliance Determination (2011-SE-4301) Goodman Manufacturing: Noncompliance Determination (2011-SE-4301) October 17, 2011 DOE issued a Notice of Noncompliance Determination to Goodman Manufacturing finding that model CPC180XXX3BXXXAA (CPC180*) of commercial package air conditioner does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing . Goodman must immediately notify each person (or company) to whom Goodmany distributed the noncompliant products that the product does not meet Federal standards. In addition, Goodman must provide to DOE documents and records showing the number of units Goodman distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil

285

Summit Manufacturing: Noncompliance Determination (2010-SE-0303) |  

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

Summit Manufacturing: Noncompliance Determination (2010-SE-0303) Summit Manufacturing: Noncompliance Determination (2010-SE-0303) Summit Manufacturing: Noncompliance Determination (2010-SE-0303) May 28, 2010 DOE issued a Notice of Noncompliance Determination to Summit Manufacturing, Inc. finding that 4SHP13LE136P + 15001+CA042A964+TDR basic model, a split-system air conditioning heat pump with a heat pump coil, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Summit must immediately notify each person (or company) to whom Summit distributed the noncompliant products that the product does not meet Federal standards. In addition, Summit must provide to DOE documents and records showing the number of units Summit distributed and to whom. The manufacturer and/or

286

Freezing distributed entanglement in spin chains  

Science Journals Connector (OSTI)

We show how to freeze distributed entanglement that has been created from the natural dynamics of spin chain systems. The technique that we propose simply requires single-qubit operations and isolates the entanglement in specific qubits at the ends of branches. Such frozen entanglement provides a useful resource, for example for teleportation or distributed quantum processing. The scheme can be applied to a wide range of systemsincluding actual spin systems and alternative qubit embodiments in strings of quantum dots, molecules, or atoms.

Irene DAmico; Brendon W. Lovett; Timothy P. Spiller

2007-09-12T23:59:59.000Z

287

Fractal distributions of dark matter and gas in the MareNostrum Universe  

E-Print Network [OSTI]

We develop a method of multifractal analysis of N-body cosmological simulations that improves on the customary counts-in-cells method by taking special care of the effects of discreteness and large scale homogeneity. The analysis of the Mare-Nostrum simulation with our method provides strong evidence of self-similar multifractal distributions of dark matter and gas, with a halo mass function that is of Press-Schechter type but has a power-law exponent -2, as corresponds to a multifractal. Furthermore, our analysis shows that the dark matter and gas distributions are indistinguishable as multifractals. To determine if there is any gas biasing, we calculate the cross-correlation coefficient, with negative but inconclusive results. Hence, we develop an effective Bayesian analysis connected with information theory, which clearly demonstrates that the gas is biased in a long range of scales, up to the scale of homogeneity. However, entropic measures related to the Bayesian analysis show that this gas bias is small (in a precise sense) and is such that the fractal singularities of both distributions coincide and are identical. We conclude that this common multifractal cosmic web structure is determined by the dynamics and is independent of the initial conditions.

Jose Gaite

2010-03-15T23:59:59.000Z

288

Fractal analysis of the dark matter and gas distributions in the Mare-Nostrum universe  

SciTech Connect (OSTI)

We develop a method of multifractal analysis of N-body cosmological simulations that improves on the customary counts-in-cells method by taking special care of the effects of discreteness and large scale homogeneity. The analysis of the Mare-Nostrum simulation with our method provides strong evidence of self-similar multifractal distributions of dark matter and gas, with a halo mass function that is of Press-Schechter type but has a power-law exponent -2, as corresponds to a multifractal. Furthermore, our analysis shows that the dark matter and gas distributions are indistinguishable as multifractals. To determine if there is any gas biasing, we calculate the cross-correlation coefficient, with negative but inconclusive results. Hence, we develop an effective Bayesian analysis connected with information theory, which clearly demonstrates that the gas is biased in a long range of scales, up to the scale of homogeneity. However, entropic measures related to the Bayesian analysis show that this gas bias is small (in a precise sense) and is such that the fractal singularities of both distributions coincide and are identical. We conclude that this common multifractal cosmic web structure is determined by the dynamics and is independent of the initial conditions.

Gaite, Jos, E-mail: jose.gaite@upm.es [Instituto de Microgravedad IDR, EIAE, Universidad Politcnica de Madrid, Pza. Cardenal Cisneros 3, E-28040 Madrid (Spain)

2010-03-01T23:59:59.000Z

289

The Distribution of Pressures in a Supernova-Driven Interstellar Medium. I. Magnetized Medium  

E-Print Network [OSTI]

Observations have suggested substantial departures from pressure equilibrium in the interstellar medium (ISM) in the plane of the Galaxy, even on scales under 50 pc. Nevertheless, multi-phase models of the ISM assume at least locally isobaric gas. The pressure then determines the density reached by gas cooling to stable thermal equilibrium. We use numerical models of the magnetized ISM to examine the consequences of supernova driving for interstellar pressures. In this paper we examine a (200 pc)^3 periodic domain threaded by magnetic fields. Individual parcels of gas at different pressures reach widely varying points on the thermal equilibrium curve: no unique set of phases is found, but rather a dynamically-determined continuum of densities and temperatures. A substantial fraction of the gas remains entirely out of thermal equilibrium. Our results appear consistent with observations of interstellar pressures. They also suggest that the high pressures observed in molecular clouds may be due to ram pressures in addition to gravitational forces. Much of the gas in our model lies far from equipartition between thermal and magnetic pressures, with ratios ranging from 0.1 to $10^4$ and ratios of uniform to fluctuating magnetic field of 0.5--1. Our models show broad pressure probability distribution functions with log-normal functional forms produced by both shocks and rarefaction waves, rather than power-law distributions produced by isolated supernova remnants. The width of the distribution can be described quantitatively by a formula derived from the work of Padoan, Nordlund, & Jones (1997).

Mordecai-Mark Mac Low; Dinshaw S. Balsara; Jongsoo Kim; Miguel A. Avillez

2004-10-29T23:59:59.000Z

290

Plant Root Characteristics and Dynamics in Arctic Tundra Ecosystems, 1960-2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

A synthesis of the available literature on tundra root distribution and dynamics, and their role in key ecosystem processes in the Arctic.

Sullivan, Paddy; Sloan, Victoria; Warren, Jeff; McGuire, Dave; Euskirchen, Eugenie; Norby, Richard; Iversen, Colleen; Walker, Anthony; Wullschleger, Stan

291

Dynamic Positioning Simulator Dynamic Positioning Simulator  

E-Print Network [OSTI]

Simulator 5 / 24 #12;Dynamic Positioning Simulator Dynamic Positioning Why Dynamic Positioning? Advantages Dynamic Positioning: No tugboats needed; Offshore set-up is quick; Power saving; Precision situations more on Ship: Wind Force Fw = 1 2 air V 2 rw CXw (rw )AT 1 2 air V 2 rw CYw (rw )AL Mw = 1 2 air V 2 rw CMw (rw

Vuik, Kees

292

Decision Dynamics in Cooperative Search Based on Evolutionary Game Theory  

E-Print Network [OSTI]

Decision Dynamics in Cooperative Search Based on Evolutionary Game Theory Mamoru Saito, Takeshi including decision dynamics based on evolutionary game theory. As an- other works on decision dynamics a decision on which room to search while determining a con- trol input. For the problem, we present

293

FRIB cryogenic distribution system  

SciTech Connect (OSTI)

The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

Ganni, Venkatarao [JLAB; Dixon, Kelly D. [JLAB; Laverdure, Nathaniel A. [JLAB; Knudsen, Peter N. [JLAB; Arenius, Dana M. [JLAB; Barrios, Matthew N. [Michigan State; Jones, S. [Michigan State; Johnson, M. [Michigan State; Casagrande, Fabio [Michigan State

2014-01-01T23:59:59.000Z

294

FRIB cryogenic distribution system  

SciTech Connect (OSTI)

The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

Ganni, V.; Dixon, K.; Laverdure, N.; Knudsen, P.; Arenius, D. [Thomas Jefferson National Accelerator Facility (JLab), Newport News, VA 23606 (United States); Barrios, M.; Jones, S.; Johnson, M.; Casagrande, F. [Facility for Rare Isotope Beams (FRIB), Michigan State University, East Lansing, MI 48824 (United States)

2014-01-29T23:59:59.000Z

295

Categorical Exclusion Determinations: Advanced Research Projects  

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

November 21, 2011 November 21, 2011 CX-007697: Categorical Exclusion Determination Autogrid, Inc. - Highly Dispatchable and Distributed Demand Response for the Integration of Distributed Generation CX(s) Applied: A9, B1.7 Date: 11/21/2011 Location(s): New York, California Offices(s): Advanced Research Projects Agency-Energy November 18, 2011 CX-007689: Categorical Exclusion Determination Georgia Tech Research Corporation- Prosumer-Based Distributed Autonomous Cyber-Physical Architecture for Ultra-Reliable Green Electricity Internetworks CX(s) Applied: A9 Date: 11/18/2011 Location(s): Georgia Offices(s): Advanced Research Projects Agency-Energy November 18, 2011 CX-007684: Categorical Exclusion Determination Texas Engineering Experiment Station - Robust Adaptive Topology Control

296

Dynamics of synchrotron VUV-induced intracluster reactions  

SciTech Connect (OSTI)

Photoionization mass spectrometry (PIMS) using the tunable vacuum ultraviolet radiation available at the National Synchrotron Light Source is being exploited to study photoionization-induced reactions in small van der Waals mixed complexes. The information gained includes the observation and classification of reaction paths, the measurement of onsets, and the determination of relative yields of competing reactions. Additional information is obtained by comparison of the properties of different reacting systems. Special attention is given to finding unexpected features, and most of the reactions investigated to date display such features. However, understanding these reactions demands dynamical information, in addition to what is provided by PIMS. Therefore the program has been expanded to include the measurement of kinetic energy release distributions.

Grover, J.R. [Brookhaven National Laboratory, Upton, NY (United States)

1993-12-01T23:59:59.000Z

297

EIA -Quarterly Coal Distribution  

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

Coal Distribution Coal Distribution Home > Coal> Quarterly Coal Distribution Back Issues Quarterly Coal Distribution Archives Release Date: June 27, 2013 Next Release Date: September 2013 The Quarterly Coal Distribution Report (QCDR) provides detailed quarterly data on U.S. domestic coal distribution by coal origin, coal destination, mode of transportation and consuming sector. All data are preliminary and superseded by the final Coal Distribution - Annual Report. Year/Quarters By origin State By destination State Report Data File Report Data File 2009 January-March pdf xls pdf xls April-June pdf xls pdf xls July-September pdf xls pdf October-December pdf xls pdf 2010 January-March pdf xls pdf xls April-June pdf xls pdf xls July-September pdf xls pdf xls

298

Engineered Products: Noncompliance Determination (2012-SE-5401) |  

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

Noncompliance Determination (2012-SE-5401) Noncompliance Determination (2012-SE-5401) Engineered Products: Noncompliance Determination (2012-SE-5401) July 26, 2012 DOE issued a Notice of Noncompliance Determination to Engineered Products Company (EPCO) finding that basic model 15701 of metal halide lamp fixture does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. EPCO must immediately notify each person (or company) to whom EPCO distributed the noncompliant product that the product does not meet Federal standards. Engineered Products: Noncompliance Determination (2012-SE-5401) More Documents & Publications Engineered Products: Proposed Penalty (2012-SE-5401) Engineered Products: Order (2012-SE-5401) Teddico: Noncompliance Determination (2012-SE-5409

299

Dynamic resource location in peer-to-peer networks  

E-Print Network [OSTI]

discovery system. One of these is lack of centralized control. The random protocol that we have developed is completely distributed. In order to meet this design con- straint, any mechanism introduced to provide determinism must also be distributed. A second... discovery system. One of these is lack of centralized control. The random protocol that we have developed is completely distributed. In order to meet this design con- straint, any mechanism introduced to provide determinism must also be distributed. A second...

Nathuji, Ripal Babubhai

2004-09-30T23:59:59.000Z

300

The CJ12 parton distributions  

SciTech Connect (OSTI)

Three new sets of next-to-leading order parton distribution functions (PDFs) are presented, determined by global fits to a wide variety of data for hard scattering processes. The analysis includes target mass and higher twist corrections needed for the description of deep-inelastic scattering data at large x and low Q^2, and nuclear corrections for deuterium targets. The PDF sets correspond to three different models for the nuclear effects, and provide a more realistic uncertainty range for the d quark PDF compared with previous fits. Applications to weak boson production at colliders are also discussed.

Accardi, Alberto [JLAB; Owens, Jeff F. [Florida State U.

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Impact of Distribution-Connected Large-Scale Wind Turbines on Transmission System Stability during Large Disturbances: Preprint  

SciTech Connect (OSTI)

This work examines the dynamic impacts of distributed utility-scale wind power during contingency events on both the distribution system and the transmission system. It is the first step toward investigating high penetrations of distribution-connected wind power's impact on both distribution and transmission stability.

Zhang, Y.; Allen, A.; Hodge, B. M.

2014-02-01T23:59:59.000Z

302

Momentum distributions in medium and heavy exotic nuclei  

E-Print Network [OSTI]

We study nucleon momentum distributions of even-even isotopes of Ni, Kr, and Sn in the framework of deformed self-consistent mean-field Skyrme HF+BCS method, as well as of theoretical correlation methods based on light-front dynamics and local density approximation. The isotopic sensitivities of the calculated neutron and proton momentum distributions are investigated together with the effects of pairing and nucleon-nucleon correlations. The role of deformation on the momentum distributions in even-even Kr isotopes is discussed. For comparison, the results for the momentum distribution in nuclear matter are also presented.

Gaidarov, M K; Sarriguren, P; Antonov, A N; Ivanov, M V; de Guerra, E Moya

2009-01-01T23:59:59.000Z

303

What determines cell size?  

E-Print Network [OSTI]

as: Marshall WF, et al. : What determines cell size? BMC7007/10/101 FORUM Open Access What determines cell size?biologists have been wondering what determines the size of

2012-01-01T23:59:59.000Z

304

Development of microbial-enzyme-mediated decomposition model parameters through steady-state and dynamic analyses  

SciTech Connect (OSTI)

We developed a Microbial-ENzyme-mediated Decomposition (MEND) model, based on the Michaelis-Menten kinetics, that describes the dynamics of physically defined pools of soil organic matter (SOC). These include particulate, mineral-associated, dissolved organic matter (POC, MOC, and DOC, respectively), microbial biomass, and associated exoenzymes. The ranges and/or distributions of parameters were determined by both analytical steady-state and dynamic analyses with SOC data from the literature. We used an improved multi-objective parameter sensitivity analysis (MOPSA) to identify the most important parameters for the full model: maintenance of microbial biomass, turnover and synthesis of enzymes, and carbon use efficiency (CUE). The model predicted an increase of 2 C (baseline temperature =12 C) caused the pools of POC-Cellulose, MOC, and total SOC to increase with dynamic CUE and decrease with constant CUE, as indicated by the 50% confidence intervals. Regardless of dynamic or constant CUE, the pool sizes of POC, MOC, and total SOC varied from 8% to 8% under +2 C. The scenario analysis using a single parameter set indicates that higher temperature with dynamic CUE might result in greater net increases in both POC-Cellulose and MOC pools. Different dynamics of various SOC pools reflected the catalytic functions of specific enzymes targeting specific substrates and the interactions between microbes, enzymes, and SOC. With the feasible parameter values estimated in this study, models incorporating fundamental principles of microbial-enzyme dynamics can lead to simulation results qualitatively different from traditional models with fast/slow/passive pools.

Wang, Gangsheng [ORNL; Post, Wilfred M [ORNL; Mayes, Melanie [ORNL

2013-01-01T23:59:59.000Z

305

Faster information dissemination in dynamic networks via network coding  

E-Print Network [OSTI]

We use network coding to improve the speed of distributed computation in the dynamic network model of Kuhn, Lynch and Oshman [STOC '10]. In this model an adversary adaptively chooses a new network topology in every round, ...

Haeupler, Bernhard

306

Predicting and understanding forest dynamics using a simple tractable model  

E-Print Network [OSTI]

the dynamics of size distributions and wood volume and, hence, carbon in even-aged plantation monocul- tures patterns in the biomass, structure, and species composition of forests (4). This problem limits our ability

Lichstein, Jeremy W.

307

A quantitative quantum-chemical analysis tool for the distribution of mechanical force in molecules  

SciTech Connect (OSTI)

The promising field of mechanochemistry suffers from a general lack of understanding of the distribution and propagation of force in a stretched molecule, which limits its applicability up to the present day. In this article, we introduce the JEDI (Judgement of Energy DIstribution) analysis, which is the first quantum chemical method that provides a quantitative understanding of the distribution of mechanical stress energy among all degrees of freedom in a molecule. The method is carried out on the basis of static or dynamic calculations under the influence of an external force and makes use of a Hessian matrix in redundant internal coordinates (bond lengths, bond angles, and dihedral angles), so that all relevant degrees of freedom of a molecule are included and mechanochemical processes can be interpreted in a chemically intuitive way. The JEDI method is characterized by its modest computational effort, with the calculation of the Hessian being the rate-determining step, and delivers, except for the harmonic approximation, exact ab initio results. We apply the JEDI analysis to several example molecules in both static quantum chemical calculations and Born-Oppenheimer Molecular Dynamics simulations in which molecules are subject to an external force, thus studying not only the distribution and the propagation of strain in mechanically deformed systems, but also gaining valuable insights into the mechanochemically induced isomerization of trans-3,4-dimethylcyclobutene to trans,trans-2,4-hexadiene. The JEDI analysis can potentially be used in the discussion of sonochemical reactions, molecular motors, mechanophores, and photoswitches as well as in the development of molecular force probes.

Stauch, Tim; Dreuw, Andreas, E-mail: dreuw@uni-heidelberg.de [Interdisciplinary Center for Scientific Computing, University of Heidelberg, Im Neuenheimer Feld 368, 69120 Heidelberg (Germany)] [Interdisciplinary Center for Scientific Computing, University of Heidelberg, Im Neuenheimer Feld 368, 69120 Heidelberg (Germany)

2014-04-07T23:59:59.000Z

308

Ionic Liquids: Radiation Chemistry, Solvation Dynamics and Reactivity Patterns  

SciTech Connect (OSTI)

Ionic liquids (ILs) are a rapidly expanding family of condensed-phase media with important applications in energy production, nuclear fuel and waste processing, improving the efficiency and safety of industrial chemical processes, and pollution prevention. ILs generally have low volatilities and are combustion-resistant, highly conductive, recyclable and capable of dissolving a wide variety of materials. They are finding new uses in chemical synthesis, catalysis, separations chemistry, electrochemistry and other areas. Ionic liquids have dramatically different properties compared to conventional molecular solvents, and they provide a new and unusual environment to test our theoretical understanding of primary radiation chemistry, charge transfer and other reactions. We are interested in how IL properties influence physical and dynamical processes that determine the stability and lifetimes of reactive intermediates and thereby affect the courses of reactions and product distributions. We study these issues by characterization of primary radiolysis products and measurements of their yields and reactivity, quantification of electron solvation dynamics and scavenging of electrons in different states of solvation. From this knowledge we wish to learn how to predict radiolytic mechanisms and control them or mitigate their effects on the properties of materials used in nuclear fuel processing, for example, and to apply IL radiation chemistry to answer questions about general chemical reactivity in ionic liquids that will aid in the development of applications listed above. Very early in our radiolysis studies it became evident that the slow solvation dynamics of the excess electron in ILs (which vary over a wide viscosity range) increase the importance of pre-solvated electron reactivity and consequently alter product distributions and subsequent chemistry. This difference from conventional solvents has profound effects on predicting and controlling radiolytic yields, which need to be quantified for the successful use under radiolytic conditions. Electron solvation dynamics in ILs are measured directly when possible and estimated using proxies (e.g. coumarin-153 dynamic emission Stokes shifts or benzophenone anion solvation) in other cases. Electron reactivity is measured using ultrafast kinetics techniques for comparison with the solvation process.

Wishart, J.F.

2011-06-12T23:59:59.000Z

309

Network Reconfiguration at the Distribution System with Distributed Generators  

Science Journals Connector (OSTI)

This article proposes a novel model for distribution network reconfiguration to meet current distribution system operating demands. In the model the connection of distributed generators to distribution system is ...

Gao Xiaozhi; Li Linchuan; Xue Hailong

2010-01-01T23:59:59.000Z

310

INVESTIGATING THE RELIABILITY OF CORONAL EMISSION MEASURE DISTRIBUTION DIAGNOSTICS USING THREE-DIMENSIONAL RADIATIVE MAGNETOHYDRODYNAMIC SIMULATIONS  

SciTech Connect (OSTI)

Determining the temperature distribution of coronal plasmas can provide stringent constraints on coronal heating. Current observations with the Extreme ultraviolet Imaging Spectrograph (EIS) on board Hinode and the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory provide diagnostics of the emission measure distribution (EMD) of the coronal plasma. Here we test the reliability of temperature diagnostics using three-dimensional radiative MHD simulations. We produce synthetic observables from the models and apply the Monte Carlo Markov chain EMD diagnostic. By comparing the derived EMDs with the 'true' distributions from the model, we assess the limitations of the diagnostics as a function of the plasma parameters and the signal-to-noise ratio of the data. We find that EMDs derived from EIS synthetic data reproduce some general characteristics of the true distributions, but usually show differences from the true EMDs that are much larger than the estimated uncertainties suggest, especially when structures with significantly different density overlap along the line of sight. When using AIA synthetic data the derived EMDs reproduce the true EMDs much less accurately, especially for broad EMDs. The differences between the two instruments are due to the: (1) smaller number of constraints provided by AIA data and (2) broad temperature response function of the AIA channels which provide looser constraints to the temperature distribution. Our results suggest that EMDs derived from current observatories may often show significant discrepancies from the true EMDs, rendering their interpretation fraught with uncertainty. These inherent limitations to the method should be carefully considered when using these distributions to constrain coronal heating.

Testa, Paola [Smithsonian Astrophysical Observatory, 60 Garden Street, MS 58, Cambridge, MA 02138 (United States); De Pontieu, Bart; Martinez-Sykora, Juan [Lockheed Martin Solar and Astrophysics Laboratory, Org. A021S, Building 252, 3251 Hanover Street, Palo Alto, CA 94304 (United States); Hansteen, Viggo; Carlsson, Mats, E-mail: ptesta@cfa.harvard.edu [Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029, Blindern, NO-0315 Oslo (Norway)

2012-10-10T23:59:59.000Z

311

Dynamics of Sleep Stage Transitions in Health and Disease  

Science Journals Connector (OSTI)

Sleep dynamics emerges from complex interactions between neuronal populations in many brain regions. Annotated sleep stages from electroencephalography (EEG) recordings could potentially provide a non?invasive way to obtain valuable insights into the mechanisms of these interactions and ultimately into the very nature of sleep regulation. However to date sleep stage analysis has been restricted only very recently expanding the scope of the traditional descriptive statistics to more dynamical concepts of the duration of and transitions between vigilance states and temporal evaluation of transition probabilities among different stages. Physiological and/or pathological implications of the dynamics of sleep stage transitions have to date not been investigated. Here we study detailed duration and transition statistics among sleep stages in healthy humans and patients with chronic fatigue syndrome known to be associated with disturbed sleep. We find that the durations of waking and non?REM sleep in particular deep sleep (Stages III and IV) during the nighttime follow a power?law probability distribution function while REM sleep durations follow an exponential function suggestive of complex underlying mechanisms governing the onset of light sleep. We also find a substantial number of REM to non?REM transitions in humans while this transition is reported to be virtually non?existent in rats. Interestingly the probability of this REM to non?REM transition is significantly lower in the patients than in controls resulting in a significantly greater REM to awake together with Stage I to awake transition probability. This might potentially account for the reported poor sleep quality in the patients because the normal continuation of sleep after either the lightest or REM sleep is disrupted. We conclude that the dynamical transition analysis of sleep stages is useful for elucidating yet?to?be?determined human sleep regulation mechanisms with a pathophysiological implication.

Akifumi Kishi; Zbigniew R. Struzik; Benjamin H. Natelson; Fumiharu Togo; Yoshiharu Yamamoto

2007-01-01T23:59:59.000Z

312

Photoluminescence Blinking Dynamics of Colloidal Quantum Dots in the Presence of Controlled External Electron Traps  

SciTech Connect (OSTI)

The effect of the external charge trap on the photoluminescence blinking dynamics of individual colloidal quantum dots is investigated with a series of colloidal quantum dot-bridge-fullerene dimers with varying bridge lengths, where the fullerene moiety acts as a well-defined, well-positioned external charge trap. It is found that charge transfer followed by charge recombination is an important mechanism in determining the blinking behavior of quantum dots when the external trap is properly coupled with the excited state of the quantum dot, leading to a quasi-continuous distribution of 'on' states and an early fall-off from a power-law distribution for both 'on' and 'off' times associated with quantum dot photoluminescence blinking.

Cotlet, M.; Xu, Z.

2012-01-23T23:59:59.000Z

313

Categorical Exclusion Determinations: California | Department of Energy  

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

7, 2010 7, 2010 CX-003690: Categorical Exclusion Determination Solar Upgrade CX(s) Applied: A9, B5.1 Date: 09/07/2010 Location(s): California Office(s): Energy Efficiency and Renewable Energy, Golden Field Office September 3, 2010 CX-003769: Categorical Exclusion Determination Development of High Rate Coating Technology for Low Cost Electrochemical Dynamic Windows CX(s) Applied: B3.6 Date: 09/03/2010 Location(s): Santa Clara, California Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory September 3, 2010 CX-003766: Categorical Exclusion Determination Development of High Rate Coating Technology for Low Cost Electrochemical Dynamic Windows CX(s) Applied: B3.6 Date: 09/03/2010 Location(s): Berkeley, California Office(s): Energy Efficiency and Renewable Energy, National Energy

314

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

January 21, 2011 January 21, 2011 CX-005058: Categorical Exclusion Determination Improving Reservoir Contact for Increased Production and Recovery of Gas Shale Reservoirs CX(s) Applied: B3.6 Date: 01/21/2011 Location(s): Salt Lake City, Utah Office(s): Fossil Energy, National Energy Technology Laboratory January 20, 2011 CX-005057: Categorical Exclusion Determination Area of Interest 1, Carbon Dioxide at the Interface: Nature and Dynamics of the Reservoir/Caprock Contact and Implications for Carbon Storage Performance CX(s) Applied: A9, B3.1 Date: 01/20/2011 Location(s): Eau Claire, Wisconsin Office(s): Fossil Energy, National Energy Technology Laboratory January 20, 2011 CX-005056: Categorical Exclusion Determination Area of Interest 1, Carbon Dioxide at the Interface: Nature and Dynamics of

315

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

19, 2011 19, 2011 CX-005634: Categorical Exclusion Determination Characterization of Hydrocarbon Samples and/or Qualitative/Quantitative Analysis of Hydrocarbon Mixtures CX(s) Applied: B3.6 Date: 04/19/2011 Location(s): Pittsburgh, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory April 19, 2011 CX-005633: Categorical Exclusion Determination Fast Responding Voltage Regulator and Dynamic VAR Compensator with Direct Medium Voltage Connection CX(s) Applied: A1, A11, B3.6, B4.4, B5.1 Date: 04/19/2011 Location(s): San Jose, California Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory April 19, 2011 CX-005632: Categorical Exclusion Determination Fast Responding Voltage Regulator and Dynamic VAR Compensator with Direct

316

Distribution free tests for mixed probability distributions  

Science Journals Connector (OSTI)

......specifically, suppose that X^ is drawn from a population having distribution function F^x), where Let nHk = (uik + vjk-wti) = n^ui Then E(tk) = \\ and t* = (^+ ... +tn)jn. Proceeding as in the derivation of (2-3-2), we can where......

E. A. C. THOMAS

1969-12-01T23:59:59.000Z

317

Distribution System State Estimation  

Office of Scientific and Technical Information (OSTI)

these include reactive power management, outage management, loss reduction, demand response, adaptable over-current protection, condition-based maintenance, distributed...

318

Distribution of Correspondence  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Defines correct procedures for distribution of correspondence to the Naval Reactors laboratories. Does not cancel another directive. Expired 8-30-97.

1996-08-30T23:59:59.000Z

319

Ductless Hydronic Distribution Systems  

Broader source: Energy.gov [DOE]

This presentation is from a Building America webinar conducted on November 8, 2011, by the Alliance for Residential Building Innovation (ARBI) about ductless hydronic distribution systems.

320

What is Distributed Wind?  

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

and refurbishers, including those from Canada, Mexico, Europe, China, and South Africa. In 2013, 30.4 MW of new distributed wind capacity was added, representing nearly...

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Distribution reliability analysis.  

E-Print Network [OSTI]

??This thesis presents an example for optimization of distribution maintenance scheduling of a recloser. It applies a risk reduction technique associated with maintenance of the (more)

Bhusal, Prabodh

2007-01-01T23:59:59.000Z

322

ASYMMETRIC ELECTRON DISTRIBUTIONS IN THE SOLAR WIND  

SciTech Connect (OSTI)

A plausible mechanism responsible for producing asymmetric electron velocity distribution functions in the solar wind is investigated by means of one-dimensional electrostatic particle-in-cell (PIC) simulation. A recent paper suggests that the variation in the ion-to-electron temperature ratio influences the nonlinear wave-particle dynamics such that it results in the formation of asymmetric distributions. The present PIC code simulation largely confirms this finding, but quantitative differences between the weak turbulence formalism and the present PIC simulation are also found, suggesting the limitation of the analytical method. The inter-relationship between the asymmetric electron distribution and the ion-to-electron temperature ratio may be a new useful concept for the observation.

Rha, Kicheol; Ryu, Chang-Mo [Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)] [Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Yoon, Peter H. [Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742 (United States)] [Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742 (United States)

2013-09-20T23:59:59.000Z

323

Decomposition and nitrogen dynamics of fine roots of Norway spruce (Picea abies (L.) Karst) at different sites  

Science Journals Connector (OSTI)

Long-term decomposition and nitrogen dynamics of Norway spruce finest (energy content and nitrogen concentration was determined. After...

Krista Lhmus; Mari Ivask

1995-01-01T23:59:59.000Z

324

Decomposition and nitrogen dynamics of fine roots of Norway spruce (Picea abies (L.) Karst.) at different sites  

Science Journals Connector (OSTI)

Long-term decomposition and nitrogen dynamics of Norway spruce finest (energy content and nitrogen concentration was determined. After...

Krista Lhmus; Mari Ivask

325

CX-003306: Categorical Exclusion Determination | Department of Energy  

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

6: Categorical Exclusion Determination 6: Categorical Exclusion Determination CX-003306: Categorical Exclusion Determination Distributed Intelligence Automated Demand Response (DIADR) Building Management System CX(s) Applied: B5.1 Date: 08/05/2010 Location(s): Berkeley, California Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory Develop a Distributed Intelligence Automated Demand Response (DIADR) management system with intelligent optimization and control algorithms for demand management, which will achieve 30% demand reduction while maintaining a healthy building environment. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-003306.pdf More Documents & Publications CX-003307: Categorical Exclusion Determination CX-003067: Categorical Exclusion Determination CX-00467

326

Westinghouse Lighting: Noncompliance Determination (2010-CE-09/1001) |  

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

Westinghouse Lighting: Noncompliance Determination Westinghouse Lighting: Noncompliance Determination (2010-CE-09/1001) Westinghouse Lighting: Noncompliance Determination (2010-CE-09/1001) June 14, 2010 DOE issued a Notice of Noncompliance Determination to Westinghouse Lighting Corporation finding that various models of incandescent reflector lamps do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Westinghouse Lighting must immediately notify each person (or company) to whom Westinghouse Lighting distributed the noncompliant products that the products do not meet Federal standards. In addition, Westinghouse Lighting must provide to DOE documents and records showing the number of units Westinghouse Lighting distributed and to whom. The manufacturer

327

CX-003307: Categorical Exclusion Determination | Department of Energy  

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

7: Categorical Exclusion Determination 7: Categorical Exclusion Determination CX-003307: Categorical Exclusion Determination Distributed Intelligence Automated Demand Response (DIADR) Building Management System CX(s) Applied: A9 Date: 08/05/2010 Location(s): Princeton, New Jersey Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory Develop a Distributed Intelligence Automated Demand Response (DIADR) management system with intelligent optimization and control algorithms for demand management, which will achieve 30% demand reduction while maintaining a healthy building environment. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-003307.pdf More Documents & Publications CX-003306: Categorical Exclusion Determination CX-003562: Categorical Exclusion Determination CX-00095

328

Dynamical 3-Space: Emergent Gravity  

E-Print Network [OSTI]

The laws of gravitation devised by Newton, and by Hilbert and Einstein, have failed many experimental and observational tests, namely the bore hole g anomaly, flat rotation curves for spiral galaxies, supermassive black hole mass spectrum, uniformly expanding universe, cosmic filaments, laboratory G measurements, galactic EM bending, precocious galaxy formation,.. The response has been the introduction of the new epicycles: ``dark matter", ``dark energy", and others. To understand gravity we must restart with the experimental discoveries by Galileo, and following a heuristic argument we are led to a uniquely determined theory of a dynamical 3-space. That 3-space exists has been missed from the beginning of physics, although it was 1st directly detected by Michelson and Morley in 1887. Uniquely generalising the quantum theory to include this dynamical 3-space we deduce the response of quantum matter and show that it results in a new account of gravity, and explains the above anomalies and others. The dynamical...

Cahill, Reginald T

2011-01-01T23:59:59.000Z

329

2012 SG Peer Review - Enhanced DMS Capabilities Supporting Distribution Network DER - Tristan Glenwright, Boeing  

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

DE-OE0000549: Enhanced Distribution Management System Capabilities Supporting Distribution Network Distributed Energy Resources Tristan E. Glenwright The Boeing Company June 8, 2012 Copyright © 2012 Boeing. All rights reserved. December 2008 DE-OE0000549 Enhanced Distribution Management System Capabilities Supporting Distribution Network Distributed Energy Resources Objective Life-cycle Funding Summary ($K) Technical Scope 1. Determine thresholds of Distributed Energy Resource (DER) penetration in distribution grids that drive significant impacts to network stability and reliability 2. Validate ability of Boeing Distribution Management System (BDMS) advanced controls to mitigate effects of increased DER and to leverage DER and DR for SAIDI and Load Factor

330

Parametric probability distributions in reliability  

E-Print Network [OSTI]

Parametric probability distributions in reliability F.P.A. Coolen Department of Mathematical parametric probability distributions which are frequently used in reliability. We present some main as models for specific reliability scenarios. Keywords: Binomial distribution, Exponential distribution

Coolen, Frank

331

Dynamic simulation method for transmission and distribution planning  

Science Journals Connector (OSTI)

Under the conditions of liberalised market development optimisation role is not to be decreasing but even increasing. Basic definitions and model structure of optimisation system under market conditions is discussed in a paper, as well the experience ... Keywords: development optimisation, liberalised electricity market, power generation, power system planning, power system simulation, power transmission, risk analysis, uncertainty

Z. Krishans; I. Oleinikova; A. Mutule; J. Runcs

2006-12-01T23:59:59.000Z

332

Exploiting Process Lifetime Distributions for Dynamic Load Balancing  

E-Print Network [OSTI]

grant number CCR­9201092. Allen Downey partially supported by NSF (DARA) grant DMW­8919074. An earlier

Harchol-Balter, Mor

333

Exploiting Process Lifetime Distributions for Dynamic Load Balancing  

E-Print Network [OSTI]

supported by NSF (DARA) grant DMW-8919074. An earlier version of this article appeared in the Proceedings

Papadopouli, Maria

334

TMS Agents: Enabling Dynamic Distributed Supply Chain Management  

E-Print Network [OSTI]

Phelps Honeywell Laboratories, 3660 Technology Drive, MN65-2600, Minneapolis, MN 55418 Tom.Wagner@honeywell on Electronic Commerce Research and Applications, 2003, Elsevier. Effort sponsored by Honeywell International, either expressed or implied, of Honeywell International. Preprint submitted to Elsevier Science #12;flow

Wagner, Thomas

335

Dynamic File Bundling for Large-scale Content Distribution  

E-Print Network [OSTI]

enable the formation of self-sustaining torrents, where the entire content of the file is available among enable the formation of self-sustaining torrents, where the entire content of the file is available among in the long tail, for which the request rates are not sufficient for the corresponding torrents to be self-sustaining

Saskatchewan, University of

336

Increasing Connection Lifetimes through Dynamic Distribution of Budgeted Power  

E-Print Network [OSTI]

usage. In their earlier work [2], [3] the authors proposed addressing these concerns by normalizing as the time interval for which the network is a connected graph. Broadly speaking, the network may partition energy supply sufficiently so that some of its incident links fail. Most prior research on network

Khan, Bilal

337

Secure Code Distribution in Dynamically Programmable Wireless Sensor Networks  

E-Print Network [OSTI]

Han and Shivakant Mishra Department of Computer Science University of Colorado at Boulder Technical of Colorado, Campus Box 0430 Boulder, CO 80309-0430 Email: {jing,rhan,mishras}@cs.colorado.edu Abstract is necessary is transmitted. Deluge benefits from a soft state design in that, as data is reliably flooded hop

Han, Richard Y.

338

Dynamic Effective-Field Scheme for Rare-Earth Systems  

Science Journals Connector (OSTI)

We demonstrate the importance of including the dynamical exchange-interaction term in the Hamiltonian of a rare-earth system. The probability distribution of the dynamic exchange field is derived in the molecular field approximation. The result is exemplified for the zero-field magnetization and crystal field spectroscopy of NdSb.

Albert Furrer and Heinz Heer

1973-11-26T23:59:59.000Z

339

Slf-stabiliezing leader election in dynamic networks  

Science Journals Connector (OSTI)

Three silent self-stabilizing asynchronous distributed algorithms are given for the leader election problem in a dynamic network with unique IDs, using the composite model of computation. A leader is elected for each connected component of the network. ... Keywords: dynamic network, leader election, self-stabilization, silent algorithm, unfair daemon

Ajoy K. Datta; Lawrence L. Larmore; Hema Piniganti

2010-09-01T23:59:59.000Z

340

Cybersecurity Dynamics Shouhuai Xu  

E-Print Network [OSTI]

Cybersecurity Dynamics Shouhuai Xu Department of Computer Science, University of Texas at San Antonio ABSTRACT We explore the emerging field of Cybersecurity Dynamics, a candidate foundation for the Science of Cybersecurity. Keywords Cybersecurity dynamics, security model, security analysis 1

Xu, Shouhuai

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Dynamics of Block Copolymer Nanocomposites  

SciTech Connect (OSTI)

A detailed study of the dynamics of cadmium sulfide nanoparticles suspended in polystyrene homopolymer matrices was carried out using X-ray photon correlation spectroscopy for temperatures between 120 and 180 C. For low molecular weight polystyrene homopolymers, the observed dynamics show a crossover from diffusive to hyper-diffusive behavior with decreasing temperatures. For higher molecular weight polystyrene, the nanoparticle dynamics appear hyper-diffusive at all temperatures studied. The relaxation time and characteristic velocity determined from the measured hyper-diffusive dynamics reveal that the activation energy and underlying forces determined are on the order of 2.14 10?19 J and 87 pN, respectively. We also carried out a detailed X-ray scattering study of the static and dynamic behavior of a styrene isoprene diblock copolymer melt with a styrene volume fraction of 0.3468. At 115 and 120 C, we observe splitting of the principal Bragg peak, which we attribute to phase coexistence of hexagonal cylindrical and cubic double- gyroid structure. In the disordered phase, above 130 C, we have characterized the dynamics of composition fluctuations via X-ray photon correlation spectroscopy. Near the peak of the static structure factor, these fluctuations show stretched-exponential relaxations, characterized by a stretching exponent of about 0.36 for a range of temperatures immediately above the MST. The corresponding characteristic relaxation times vary exponentially with temperature, changing by a factor of 2 for each 2 C change in temperature. At low wavevectors, the measured relaxations are diffusive with relaxation times that change by a factor of 2 for each 8 C change in temperature.

Mochrie, Simon G. J.

2014-09-09T23:59:59.000Z

342

THE MASS DISTRIBUTION OF SUBGIANT PLANET HOSTS  

SciTech Connect (OSTI)

High mass stars are hostile to Doppler measurements due to rotation and activity on the main-sequence, so RV searches for planets around massive stars have relied on evolved stars. A large number of planets have been found around evolved stars with M > 1.5 M{sub Sun }. To test the robustness of mass determinations, Lloyd compared mass distributions of planet hosting subgiants with distributions from integrating isochrones and concluded that it is unlikely the subgiant planet hosts are this massive, but rather that the mass inferences are systematically in error. The conclusions of Lloyd have been called in to question by Johnson et al., who show TRILEGAL-based mass distributions that disagree with the mass distributions in Lloyd, which they attribute to Malmquist bias. Johnson et al. argue that the very small spectroscopic observational uncertainties favor high masses, and there are a large number of high mass sub giants in RV surveys. However, in this Letter, it is shown that Malmquist bias does not impact the mass distributions, but the mass distribution is sensitive to Galaxy model. The relationship needed to reconcile the subgiant planet host masses with any model of the Galactic stellar population is implausible, and the conclusion of Lloyd that spectroscopic mass determinations of subgiants are likely to have been overestimated is robust.

Lloyd, James P. [Department of Astronomy, Cornell University, Ithaca, NY (United States)

2013-09-01T23:59:59.000Z

343

The dynamics of fragment formation  

SciTech Connect (OSTI)

We demonstrate that in the Quantum Molecular Dynamics model, dynamical correlations can result in the production rate for final state nucleon clusters (and hence composite fragments) being higher than would be expected if statistics and the available phase space were dominant in determining composite formation. An intranuclear cascade or a Boltzmann-Uehling-Uhlenbeck model, combined with a statistical approach in the late stage of the collision to determine composites, provides an equivalent description only under limited conditions of centrality and beam energy. We use data on participant fragment production in Au + Au collisions in the Bevalac`s BOS time projection chamber to map out the parameter space where statistical clustering provides a good description. In particular, we investigate momentum-space densities of fragments up to {sup 4}He as a function of fragment transverse momentum, azimuth relative to the reaction plane, rapidity, multiplicity and beam energy.

Keane, D. [Kent State Univ., OH (United States); EOS Collaboration

1994-09-01T23:59:59.000Z

344

Determination of the dynamic modulus of elasticity in epon 828  

E-Print Network [OSTI]

OF VRC OAR RCSAIN PARAILCL SHCN OCPORNAV ION OOOMROT TRON TNK LONA I Tue INAL d loPLAO cscevF Y(xgv)g 'RILL ~ AT IOFY TNc sar'c Ceua 'f I ON y (x, r) e a Y??(x, r) (Qc w c ow r, po) (0) S s N ce c ra c du o o d R I P v o I If e I d A v c P A R 'I I A...

Swinson, Weldon Frank

1960-01-01T23:59:59.000Z

345

Dynamical determination of the gravitational degrees of freedom  

E-Print Network [OSTI]

$[n+1]$-dimensional ($n\\geq 3$) smooth Einsteinian spaces of Euclidean and Lorentzian signature are considered. The base manifold $M$ is assumed to be smoothly foliated by a two-parameter family of codimension-two-surfaces which are orientable and compact without boundary in $M$. By applying a pair of nested $1+n$ and $1+[n-1]$ decompositions, the canonical form of the metric and the conformal structure of the foliating codimension-two-surfaces a gauge fixing, analogous to the one applied in [9], is introduced. In verifying that the true degrees of freedom of gravity may conveniently be represented by the conformal structure it is shown first that regardless whether the primary space is Riemannian or Lorentzian, in terms of the chosen geometrically distinguished new variables, the $1+n$ momentum constraint can be written as a first order symmetric hyperbolic system. It is also argued that in the generic case the Hamiltonian constraint can be solved as an algebraic equation. By combining the $1+n$ constraints ...

Rcz, Istvn

2014-01-01T23:59:59.000Z

346

Categorical Exclusion Determinations: Science | Department of Energy  

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

Science Science Categorical Exclusion Determinations: Science Categorical Exclusion Determinations issued by Science. DOCUMENTS AVAILABLE FOR DOWNLOAD February 9, 2012 CX-008000: Categorical Exclusion Determination Crystal Chemistry of Toxic Metal Sequestration CX(s) Applied: B3.6 Date: 02/09/2012 Location(s): Illinois Offices(s): Science, Chicago Office January 5, 2012 CX-007676: Categorical Exclusion Determination Dynamic Compression Sector (DCS) project at Advanced Photon Source CX(s) Applied: B3.6 Date: 01/05/2012 Location(s): Illinois Offices(s): Science, Argonne Site Office January 4, 2012 CX-008012: Categorical Exclusion Determination Wave Glider-Based Passive Acoustic Detection System CX(s) Applied: B3.6, B3.16, Date: 01/04/2012 Location(s): Washington Offices(s): Science, Pacific Northwest Site Office

347

Categorical Exclusion Determinations: Mississippi | Department of Energy  

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

Mississippi Mississippi Categorical Exclusion Determinations: Mississippi Location Categorical Exclusion Determinations issued for actions in Mississippi. DOCUMENTS AVAILABLE FOR DOWNLOAD September 11, 2013 CX-011018: Categorical Exclusion Determination A Systematic Multiscale Modeling and Experimental Approach to Protect Grain Boundaries in Magnesium... CX(s) Applied: A9, B3.6 Date: 09/11/2013 Location(s): Mississippi Offices(s): National Energy Technology Laboratory June 24, 2013 CX-010511: Categorical Exclusion Determination Mississippi State University Sustainable Energy Research Center CX(s) Applied: A9, B3.6 Date: 06/24/2013 Location(s): Mississippi Offices(s): Golden Field Office October 18, 2012 CX-009463: Categorical Exclusion Determination Temporal Characterization of Hydrates System Dynamics Beneath Seafloor

348

Dynamics of magnetic nanoparticle suspensions  

E-Print Network [OSTI]

We study the dynamics of a suspension of magnetic nanoparticles. Their relaxation times are strongly size-dependent. The dominant mode of relaxation is also governed by the size of the particles. As a result the dynamics is greatly altered due to polydispersity in the sample. We study the effect of polydispersity on the response functions. These exhibit significant changes as the parameters characterizing polydispersity are varied. We also provide a procedure to extract the particle size distribution in a polydisperse sample using Cole-Cole plots. Further the presence of attractive interactions causes aggregation of particles leading to the formation of clusters. Repulsive interactions along with thermal disorder not only hinder aggregation, but also introduce the possibility of removal of particles or "fragmentation" from clusters. The competing mechanisms of aggregation and fragmentation yield a distribution of cluster sizes in the steady-state. We attempt to understand the formation of clusters and their distributions using a model incorporating the phenomena of aggregation and fragmentation. Scaling forms for quantities of interest have been obtained. Finally we compare our numerical results with experimental data. These comparisons are satisfactory.

Vanchna Singh; Varsha Banerjee; Manish Sharma

2012-08-20T23:59:59.000Z

349

Dynamic response of guyed towers  

E-Print Network [OSTI]

guyed towers. A parametric study was conducted using eigen analysis to determine the effects of consistent mass, geometric stiffness and P-Delta gravity loads. Time domain solutions were obtained by direct integration for motion due to regular Stokes... guyed tower 2 References to guyed tower dynamic analysis 4 Effect of mass formulation on tower natural periods. 5 P-Delta effect on fundamental period. 6 Effect of axial compression on the 1st & 2nd mode. 7 Geometric stiffness effect on natural...

Gillcrist, Mark Christopher

2012-06-07T23:59:59.000Z

350

Rough sets determined by tolerances  

Science Journals Connector (OSTI)

Abstract We show that for any tolerance R on U, the ordered sets of lower and upper rough approximations determined by R form ortholattices. These ortholattices are completely distributive, thus forming atomistic Boolean lattices, if and only if R is induced by an irredundant covering of U, and in such a case, the atoms of these Boolean lattices are described. We prove that the ordered set RS of rough sets determined by a tolerance R on U is a complete lattice if and only if it is a complete subdirect product of the complete lattices of lower and upper rough approximations. We show that R is a tolerance induced by an irredundant covering of U if and only if RS is an algebraic completely distributive lattice, and in such a situation a quasi-Nelson algebra can be defined on RS. We present necessary and sufficient conditions which guarantee that for a tolerance R on U, the ordered set RS X is a lattice for all X ? U , where R X denotes the restriction of R to the set X and RS X is the corresponding set of rough sets. We introduce the disjoint representation and the formal concept representation of rough sets, and show that they are DedekindMacNeille completions of RS.

Jouni Jrvinen; Sndor Radeleczki

2014-01-01T23:59:59.000Z

351

DAVIC - Distributed Energy Automation via Implicit Communication  

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

DAVIC - Distributed Energy Automation via Implicit Communication DAVIC - Distributed Energy Automation via Implicit Communication Speaker(s): Peter Palensky Date: January 22, 2008 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Peng Xu The electricity grid is seen as a wide-area distributed process, determined by its sub-processes - in our case the loads and distributed generation. Network-based coordination needs to be done very carefully and properly timed to avoid instabilities. Luckily, every point of the grid has the same grid frequency and the same time. Integrating these two trivial things (implicit communication) into one consistent communication model might complement a low-quality (explicit) best-effort communication channel (e.g. Internet, GPRS) for real time applications. A simulation shall clarify how

352

Large scale inhomogeneity and local dynamical friction  

E-Print Network [OSTI]

We investigate the effect of a density gradient on Chandrasekhar's dynamical friction formula based on the method of 2-body encounters in the local approximation. We apply these generalizations to the orbit evolution of satellite galaxies in Dark Matter haloes. We find from the analysis that the main influence occurs through a position-dependent maximum impact parameter in the Coulomb logarithm, which is determined by the local scale-length of the density distribution. We also show that for eccentric orbits the explicit dependence of the Coulomb logarithm on position yields significant differences for the standard homogeneous force. Including the velocity dependence of the Coulomb logarithm yields ambigous results. The orbital fits in the first few periods are further improved, but the deviations at later times are much larger. The additional force induced by the density gradient, the inhomogeneous force, is not antiparallel to the satellite motion and can exceed 10% of the homogeneous friction force in magnitude. However, due to the symmetry properties of the inhomogeneous force, there is a deformation and no secular effect on the orbit at the first order. Therefore the inhomogeneous force can be safely neglected for the orbital evolution of satellite galaxies. For the homogeneous force we compare numerical N-body calculations with semi-analytical orbits to determine quantitatively the accuracy of the generalized formulae of the Coulomb logarithm in the Chandresekhar approach. With the local scale-length as the maximum impact parameter we find a significant improvement of the orbital fits and a better interpretation of the quantitative value of the Coulomb logarithm.

A. Just; J. Penarrubia

2004-10-29T23:59:59.000Z

353

Towards a General Theory of Extremes for Observables of Chaotic Dynamical Systems Valerio Lucarini,  

E-Print Network [OSTI]

Towards a General Theory of Extremes for Observables of Chaotic Dynamical Systems Valerio Lucarini the geometrical properties of a chaotic dynamical system and the distribution of extreme values. We show that the extremes of so-called physical observables are distributed according to the classical generalised Pareto

354

Atmospheric Dynamics of Exoplanets  

E-Print Network [OSTI]

The characterization of exoplanetary atmospheres has come of age in the last decade, as astronomical techniques now allow for albedos, chemical abundances, temperature profiles and maps, rotation periods and even wind speeds to be measured. Atmospheric dynamics sets the background state of density, temperature and velocity that determines or influences the spectral and temporal appearance of an exoplanetary atmosphere. Hot exoplanets are most amenable to these characterization techniques; in the present review, we focus on highly-irradiated, large exoplanets (the "hot Jupiters"), as astronomical data begin to confront theoretical questions. We summarize the basic atmospheric quantities inferred from the astronomical observations. We review the state of the art by addressing a series of current questions and look towards the future by considering a separate set of exploratory questions. Attaining the next level of understanding will require a concerted effort of constructing multi-faceted, multi-wavelength dat...

Heng, Kevin

2014-01-01T23:59:59.000Z

355

Fractal Location and Anomalous Diffusion Dynamics for Oil Wells from the KY Geological Survey  

E-Print Network [OSTI]

Utilizing data available from the Kentucky Geonet (KYGeonet.ky.gov) the fossil fuel mining locations created by the Kentucky Geological Survey geo-locating oil and gas wells are mapped using ESRI ArcGIS in Kentucky single plain 1602 ft projection. This data was then exported into a spreadsheet showing latitude and longitude for each point to be used for modeling at different scales to determine the fractal dimension of the set. Following the porosity and diffusivity studies of Tarafdar and Roy1 we extract fractal dimensions of the fossil fuel mining locations and search for evidence of scaling laws for the set of deposits. The Levy index is used to determine a match to a statistical mechanically motivated generalized probability function for the wells. This probability distribution corresponds to a solution of a dynamical anomalous diffusion equation of fractional order that describes the Levy paths which can be solved in the diffusion limit by the Fox H function ansatz.

Andrew, Keith; Andrew, Kevin A

2009-01-01T23:59:59.000Z

356

Constraints of bioenergetics on the ecology and distribution of vertebrate ectotherms: Progress report, 1 January 1988-31 December 1988  

SciTech Connect (OSTI)

The constraints of bioenergetics on the ecology and distribution of vertebrate ectotherms were quantified. During 1988, we conducted studies: (1) to determine the role of incubation temperature on the post-hatching growth rate of the snapping turtle, Chelydra serpentina, (2) to establish the rate of energy expenditure of the slider turtle, Trachemys scripta, in the field, (3) to determine the field metabolic rates, body temperatures and selected microclimates of the box turtle, Terrapene carolina, and (4) to measure the effect of diet type on the consumption rate, digestion rate and digestive efficiency of adult T. scripta. We also continued our research on the three-dimensional bioenergetic climate space for freshwater turtles. In addition, we completed editing the symposium volume from our symposium on Constraints of Bioenergetics on Animal Population Dynamics that was held at the last meeting of the American Society of Zoologists. 43 refs., 1 fig., 1 tab.

Spotila, J.R.

1988-08-01T23:59:59.000Z

357

Constraints of bioenergetics on the ecology and distribution of vertebrate ectotherms: Progress report, 1 January 1988-31 August 1988  

SciTech Connect (OSTI)

We quantified the constraints of bioenergetics on the ecology and distribution of vertebrate ectotherms. During the first eight months of 1988 we conducted studies to determine the role of incubation temperature on the post hatching growth rate of the snapping turtle, Chelydra serpentina, to establish the rate of energy expenditure of the slider turtle, Trachemys scripta, in the field, to determine the field metabolic rates, body temperatures, and water flux rates of the box turtle, Terrapene carolina, and to measure the effect of diet type on the consumption rate, digestion rate and digestive efficiency of adult T. scripta. We also organized and chaired a national symposium on Constraints of Bioenergetics on Animal Population Dynamics at the 1987 meeting of the American Society of Zoologists. 18 refs.

Spotila, J.R.

1988-07-01T23:59:59.000Z

358

Reliability improvement of distribution systems using SSVR  

Science Journals Connector (OSTI)

This paper presents a reliability assessment algorithm for distribution systems using a Static Series Voltage Regulator (SSVR). Furthermore, this algorithm considers the effects of Distributed Generation (DG) units, alternative sources, system reconfiguration, load shedding and load adding on distribution system reliability indices. In this algorithm, load points are classified into 8 types and separated restoration times are considered for each class. Comparative studies are conducted to investigate the impacts of DG and alternative source unavailability on the distribution system reliability. For reliability assessment, the customer-oriented reliability indices such as SAIFI, SAIDI, CAIDI ASUI and also load- and energy-oriented indices such as ENS and AENS are evaluated. The effectiveness of the proposed algorithm is examined on the two standard distribution systems consisting of 33 and 69 nodes. The best location of the SSVR in distribution systems is determined based on different reliability indices, separately. Results show that the proposed algorithm is efficient for large-scale radial distribution systems and can accommodate the effects of fault isolation and load restoration.

Mehdi Hosseini; Heidar Ali Shayanfar; Mahmoud Fotuhi-Firuzabad

2009-01-01T23:59:59.000Z

359

Statistics of correlation functions from molecular dynamics  

Science Journals Connector (OSTI)

The statistical uncertainty in the calculation of velocity autocorrelation functions and self-diffusion coefficients from molecular dynamics is empirically determined from the spread of the molecular-dynamics results for an ensemble of macroscopically identical systems. The experimental uncertainties of the velocity-autocorrelation-function values at equilibrium and in the presence of flow agree well with theoretical predictions. The uncertainty of the self-diffusion coefficient is found to decrease as the inverse square root of the averaging time.

I. Bitsanis; M. Tirrell; H. Ted Davis

1987-07-15T23:59:59.000Z

360

Categorical Exclusion Determinations: California | Department of Energy  

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

November 23, 2011 November 23, 2011 CX-007709: Categorical Exclusion Determination Regents of the University of Minnesota - Thermal Fuel: Solar Fuels via Partial Redox Cycles with Heat Recovery CX(s) Applied: B3.6 Date: 11/23/2011 Location(s): Minnesota, California, Colorado Offices(s): Advanced Research Projects Agency-Energy November 21, 2011 CX-007717: Categorical Exclusion Determination Arcadia Biosciences, Inc. - Vegetative Production of Oil in a C4 Crop CX(s) Applied: B3.6 Date: 11/21/2011 Location(s): California Offices(s): Advanced Research Projects Agency-Energy November 21, 2011 CX-007697: Categorical Exclusion Determination Autogrid, Inc. - Highly Dispatchable and Distributed Demand Response for the Integration of Distributed Generation CX(s) Applied: A9, B1.7 Date: 11/21/2011

Note: This page contains sample records for the topic "determination distributed dynamic" 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

The Measurement of Bubble-Size Distributions by Acoustical Backscatter  

Science Journals Connector (OSTI)

A multifrequency acoustical-backscatter technique is described for determining the size distribution of bubbles with radii between 8 and 130 m. The method makes use of the resonance in the microbubbles and operates at six frequencies ranging ...

Svein Vagle; David M. Farmer

1992-10-01T23:59:59.000Z

362

Mechanical Network in Titin Immunoglobulin from Force Distribution Analysis  

E-Print Network [OSTI]

Mechanical Network in Titin Immunoglobulin from Force Distribution Analysis Wolfram Stacklies1. , M, Stuttgart, Germany Abstract The role of mechanical force in cellular processes is increasingly revealed force propagates within proteins determines their mechanical behavior yet remains largely unknown. We

Gräter, Frauke

363

Detecting determinism from point processes  

Science Journals Connector (OSTI)

The detection of a nonrandom structure from experimental data can be crucial for the classification, understanding, and interpretation of the generating process. We here introduce a rank-based nonlinear predictability score to detect determinism from point process data. Thanks to its modular nature, this approach can be adapted to whatever signature in the data one considers indicative of deterministic structure. After validating our approach using point process signals from deterministic and stochastic model dynamics, we show an application to neuronal spike trains recorded in the brain of an epilepsy patient. While we illustrate our approach in the context of temporal point processes, it can be readily applied to spatial point processes as well.

Ralph G. Andrzejak; Florian Mormann; Thomas Kreuz

2014-12-02T23:59:59.000Z

364

High-Performance Computation of Distributed-Memory Parallel 3D Voronoi and Delaunay Tessellation  

SciTech Connect (OSTI)

Computing a Voronoi or Delaunay tessellation from a set of points is a core part of the analysis of many simulated and measured datasets: N-body simulations, molecular dynamics codes, and LIDAR point clouds are just a few examples. Such computational geometry methods are common in data analysis and visualization; but as the scale of simulations and observations surpasses billions of particles, the existing serial and shared-memory algorithms no longer suffice. A distributed-memory scalable parallel algorithm is the only feasible approach. The primary contribution of this paper is a new parallel Delaunay and Voronoi tessellation algorithm that automatically determines which neighbor points need to be exchanged among the subdomains of a spatial decomposition. Other contributions include periodic and wall boundary conditions, comparison of our method using two popular serial libraries, and application to numerous science datasets.

Peterka, Tom; Morozov, Dmitriy; Phillips, Carolyn

2014-11-14T23:59:59.000Z

365

Coal Distribution Database, 2008  

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

4Q 2009 4Q 2009 April 2010 Quarterly Coal Distribution Table Format and Data Sources 4Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal Distribution Report is a preliminary report, based on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. The final report will rely on the receipt of annual data to replace the imputed monthly data for smaller electric generation plants that are excluded from the monthly filing requirement, and final data for all other respondents. The Coal Distribution Report traces coal from the origin State to the destination State by transportation mode. The data sources beginning with the 2008 Coal Distribution Report

366

Electricity Distribution System Workshop  

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

Grid Tech Team Grid Tech Team Discussion Summary Electricity Distribution System Workshop 2 Table of Contents INTRODUCTION ............................................................................................................................................. 3 EXECUTIVE SUMMARY .................................................................................................................................. 4 Process ...................................................................................................................................................... 4 Common Themes ...................................................................................................................................... 5 Discussion Topic Tables ............................................................................................................................. 8

367

Ductless Hydronic Distribution  

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

DUCTLESS HYDRONIC DUCTLESS HYDRONIC DISTRIBUTION Alliance for Residential Building Innovation David Springer, Davis Energy Group Context  Target: Builders of high performance new homes & deep retrofits  Why is this technology key to meeting performance goals of future homes?  Distribution Efficiency * Distribution efficiency for well insulated, tight ducts in attics ≈ 85% * Duct energy losses drives placement of ducts inside conditioned space, which adds cost and interferes with structure and architecture * Ductless hydronic systems can approach 100% distribution efficiency; piping needs little space  Delivery Energy * Fans: 0.58 W/cfm or 9 (heating) to 27 (cooling) W/kBtuh * Pumps: 8 W/gpm, or 0.8 W/kBtuh Context  Sizing * Conventional systems tend to be too large for low load homes

368

Gossiping in distributed systems  

E-Print Network [OSTI]

Exchange of information between various nodes in a distributed network can be useful to utilize the available resources effectively. Gossiping algorithms can be used for this purpose. We begin with a survey of various gossiping schemes for different...

Penubothu, Muralidhar V

2012-06-07T23:59:59.000Z

369

Central Versus Distributed Production  

Broader source: Energy.gov [DOE]

Central, semi-central, and distributed production facilities are expected to play a role in the evolution and long-term use of hydrogen as an energy carrier. The different resources and processes...

370

Recoverable distributed shared memory  

E-Print Network [OSTI]

Distributed Shared Memory (DSM) is a model for interprocess communication, implemented on top of message passing systems. In this model, processes running on separate hosts can access a shared, coherent memory address space, provided...

Kanthadai, Sundarrajan S

2012-06-07T23:59:59.000Z

371

Coal Distribution Database, 2008  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

4Q 2009 April 2010 Quarterly Coal Distribution Table Format and Data Sources 4Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal...

372

Efficient distributed quantum computing  

E-Print Network [OSTI]

We provide algorithms for efficiently moving and addressing quantum memory in parallel. These imply that the standard circuit model can be simulated with a low overhead by a more realistic model of a distributed quantum ...

Beals, Robert

373

The Evolution of the Multiplicity of Embedded Protostars. II. Binary Separation Distribution and Analysis  

Science Journals Connector (OSTI)

We present the Class I protostellar binary separation distribution based on the data tabulated in a companion paper. We verify the excess of Class I binary stars over solar-type main-sequence stars in the separation range from 500 AU to 4500 AU. Although our sources are in nearby star-forming regions distributed across the entire sky (including Orion), none of our objects are in a high stellar density environment. A log-normal function, used by previous authors to fit the main-sequence and T Tauri binary separation distributions, poorly fits our data, and we determine that a log-uniform function is a better fit. Our observations show that the binary separation distribution changes significantly during the Class I phase, and that the binary frequency at separations greater than 1000 AU declines steadily with respect to spectral index. Despite these changes, the binary frequency remains constant until the end of the Class I phase, when it drops sharply. We propose a scenario to account for the changes in the Class I binary separation distribution. This scenario postulates that a large number of companions with a separation greater than ~1000 AU were ejected during the Class 0 phase, but remain gravitationally bound due to the significant mass of the Class I envelope. As the envelope dissipates, these companions become unbound and the binary frequency at wide separations declines. Circumstellar and circumbinary disks are expected to play an important role in the orbital evolution at closer separations. This scenario predicts that a large number of Class 0 objects should be non-hierarchical multiple systems, and that many Class I young stellar objects (YSOs) with a widely separated companion should also have a very close companion. We also find that Class I protostars are not dynamically pristine, but have experienced dynamical evolution before they are visible as Class I objects. Our analysis shows that the Class I binary frequency and the binary separation distribution strongly depend on the star-forming environment.

Michael S. Connelley; Bo Reipurth; Alan T. Tokunaga

2008-01-01T23:59:59.000Z

374

Accelerating cycle expansions by dynamical conjugacy  

E-Print Network [OSTI]

Periodic orbit theory provides two important functions---the dynamical zeta function and the spectral determinant for the calculation of dynamical averages in a nonlinear system. Their cycle expansions converge rapidly when the system is uniformly hyperbolic but greatly slowed down in the presence of non-hyperbolicity. We find that the slow convergence can be associated with singularities in the natural measure. A properly designed coordinate transformation may remove these singularities and results in a dynamically conjugate system where fast convergence is restored. The technique is successfully demonstrated on several examples of one-dimensional maps and some remaining challenges are discussed.

Ang Gao; Jianbo Xie; Yueheng Lan

2011-06-06T23:59:59.000Z

375

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin  

E-Print Network [OSTI]

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin Report Prepared by using tools such as tracers to determine groundwater travel times and this dynamic simulation modeling

Fay, Noah

376

Categorical Exclusion Determinations: Hawaii | Department of Energy  

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

Hawaii Hawaii Categorical Exclusion Determinations: Hawaii Location Categorical Exclusion Determinations issued for actions in Hawaii. DOCUMENTS AVAILABLE FOR DOWNLOAD August 29, 2013 CX-011110: Categorical Exclusion Determination Advancements in Algal Biomass Yield CX(s) Applied: A9 Date: 08/29/2013 Location(s): Hawaii Offices(s): Golden Field Office August 15, 2013 CX-010748: Categorical Exclusion Determination Distributed Resource Energy Analysis and Management System Development for Real-Time Grid Operations CX(s) Applied: A9, A11 Date: 08/15/2013 Location(s): Hawaii Offices(s): Golden Field Office June 3, 2013 CX-010507: Categorical Exclusion Determination Development and Demonstration of Smart Grid Inverters for High-Penetration Photovoltaic Applications CX(s) Applied: A9, B3.6, B5.16

377

Categorical Exclusion Determinations: Kansas | Department of Energy  

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

Kansas Kansas Categorical Exclusion Determinations: Kansas Location Categorical Exclusion Determinations issued for actions in Kansas. DOCUMENTS AVAILABLE FOR DOWNLOAD September 17, 2013 CX-010938: Categorical Exclusion Determination Midwest Region Alternative Fuels Project CX(s) Applied: A1 Date: 09/17/2013 Location(s): Kansas, Kansas Offices(s): National Energy Technology Laboratory September 11, 2013 CX-011016: Categorical Exclusion Determination Distributed Fiber Optic Arrays: Integrated Temperature and Seismic Sensing for Detection of Carbon Dioxide Flow.. CX(s) Applied: B3.6, B3.11 Date: 09/11/2013 Location(s): Kansas Offices(s): National Energy Technology Laboratory August 29, 2013 CX-011066: Categorical Exclusion Determination Midwest Region Alternative Fuels Project

378

Dynamic load Variation and Stability Analysis in Distribution Networks with Distributed Generators  

E-Print Network [OSTI]

energy sources (small hydro, modern biomass, wind, solar, geothermal, and bio fuels). The annual growth rate of wind energy is about 30% [2], with a worldwide installed capacity of 157,900 megawatts (MW to conduct all the aspects of model implementation and carry out the extensive simulation studies. Here also

Pota, Himanshu Roy

379

Determination of Electric-Field, Magnetic-Field, and Electric...  

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

Electric-Field, Magnetic-Field, and Electric-Current Distributions of Infrared Optical Antennas: A Near-Field Determination of Electric-Field, Magnetic-Field, and Electric-Current...

380

SAW determination of surface area of thin films  

DOE Patents [OSTI]

N.sub.2 adsorption isotherms are measured from thin films on SAW devices. The isotherms may be used to determine the surface area and pore size distribution of thin films.

Frye, Gregory C. (Albuquerque, NM); Martin, Stephen J. (Albuquerque, NM); Ricco, Antonio J. (Albuquerque, NM)

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Plasma-Density Determination from X-Ray Radiography of Laser-Driven Spherical Implosions  

E-Print Network [OSTI]

The fuel layer density of an imploding laser-driven spherical shell is inferred from framed x-ray radiographs. The density distribution is determined by using Abel inversion to compute the radial distribution of the opacity ...

Frenje, Johan A.

382

Distribution of Pendant Alkyl Groups in the Argonne Premium Coals  

Science Journals Connector (OSTI)

Distribution of Pendant Alkyl Groups in the Argonne Premium Coals ... Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, and Department of Chemistry, The University of Chicago, Chicago, Illinois 60637 ... The ruthenium(VIII) oxidation reaction has been employed to determine the distribution of alkyl groups that are bonded to aromatic structural elements in lignin and the Argonne Premium Coals. ...

Marcus Obeng; Leon M. Stock

1996-07-18T23:59:59.000Z

383

Thermal distribution systems in commercial buildings  

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

Thermal distribution systems in commercial buildings Thermal distribution systems in commercial buildings Title Thermal distribution systems in commercial buildings Publication Type Journal Article LBNL Report Number LBNL-51860 Year of Publication 2003 Authors Diamond, Richard C., Craig P. Wray, Darryl J. Dickerhoff, Nance Matson, and Duo Wang Start Page Chapter Abstract Previous research suggests that HVAC thermal distribution systems in commercial buildings suffer from thermal losses, such as those caused by duct air leakage and poor duct location. Due to a lack of metrics and data showing the potentially large energy savings from reducing these losses, the California building industry has mostly overlooked energy efficiency improvements in this area. The purpose of this project is to obtain the technical knowledge needed to properly measure and understand the energy efficiency of these systems. This project has three specific objectives: to develop metrics and diagnostics for determining system efficiencies, to develop design and retrofit information that the building industry can use to improve these systems, and to determine the energy impacts associated with duct leakage airflows in an existing large commercial building. The primary outcome of this project is the confirmation that duct leakage airflows can significantly impact energy use in large commercial buildings: our measurements indicate that adding 15% duct leakage at operating conditions leads to an increase in fan power of about 25 to 35%. This finding is consistent with impacts of increased duct leakage airflows on fan power that have been predicted by previous simulations. Other project outcomes include the definition of a new metric for distribution system efficiency, the demonstration of a reliable test for determining duct leakage airflows, and the development of new techniques for duct sealing. We expect that the project outcomes will lead to new requirements for commercial thermal distribution system efficiency in future revisions of California's Title 24.

384

Distributed Tabletops: Territoriality and Orientation in Distributed Collaboration  

E-Print Network [OSTI]

Distributed Tabletops: Territoriality and Orientation in Distributed Collaboration Abstract Previous research has shown that orientation and territory serve key roles during tabletop collaboration. However, no one has yet investigated whether they can play similar roles in distributed collaboration

Robinson, Peter

385

Deformation-induced accelerated dynamics in polymer glasses  

E-Print Network [OSTI]

Molecular dynamics simulations are used to investigate the effects of deformation on the segmental dynamics in an aging polymer glass. Individual particle trajectories are decomposed into a series of discontinuous hops, from which we obtain the full distribution of relaxation times and displacements under three deformation protocols: step stress (creep), step strain, and constant strain rate deformation. As in experiments, the dynamics can be accelerated by several orders of magnitude during deformation, and the history dependence is entirely erased during yield (mechanical rejuvenation). Aging can be explained as a result of the long tails in the relaxation time distribution of the glass, and similarly, mechanical rejuvenation is understood through the observed narrowing of this distribution during yield. Although the relaxation time distributions under deformation are highly protocol specific, in each case they may be described by a universal acceleration factor that depends only on the strain.

Mya Warren; Joerg Rottler

2010-08-16T23:59:59.000Z

386

CX-007636: Categorical Exclusion Determination | Department of Energy  

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

36: Categorical Exclusion Determination 36: Categorical Exclusion Determination CX-007636: Categorical Exclusion Determination Dynamic Mechanical Testing with Battery Electrolyte in Savannah River National Laboratory Designed Sample Holders CX(s) Applied: B3.6 Date: 01/18/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office Two new sample holders or "clamps" have been designed by Savannah River National Laboratory for use with an existing Dynamic Mechanical Analyzer (DMA). They will both hold an electrolyte, and will be used to test the dynamic mechanical properties of test samples immersed in the electrolyte at controlled temperatures. One clamp will test in compression, and the other in tension. CX-007636.pdf More Documents & Publications CX-008632: Categorical Exclusion Determination

387

Categorical Exclusion Determinations: Texas | Department of Energy  

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

October 2, 2012 October 2, 2012 CX-009237: Categorical Exclusion Determination The Dow Chemical Company CX(s) Applied: B5.7 Date: 10/02/2012 Location(s): Texas Offices(s): Fossil Energy September 27, 2012 CX-009327: Categorical Exclusion Determination Gas Hydrate Dynamics on the Alaskan Beaufort Continental Slope: Modeling and Field Characterization CX(s) Applied: A9 Date: 09/27/2012 Location(s): Texas Offices(s): National Energy Technology Laboratory September 20, 2012 CX-009218: Categorical Exclusion Determination Replace Sparge Piping at Bryan Mound Raw Water Intake Structure CX(s) Applied: B1.3 Date: 09/20/2012 Location(s): Texas Offices(s): Strategic Petroleum Reserve Field Office September 19, 2012 CX-009359: Categorical Exclusion Determination Houston Zero Emission Delivery Vehicle Deployment

388

Rotary seal with improved film distribution  

DOE Patents [OSTI]

The present invention is a generally circular rotary seal that establishes sealing between relatively rotatable machine components for lubricant retention and environmental exclusion, and incorporates seal geometry that interacts with the lubricant during relative rotation to distribute a lubricant film within the dynamic sealing interface. The features of a variable inlet size, a variable dynamic lip flank slope, and a reduction in the magnitude and circumferentially oriented portion of the lubricant side interfacial contact pressure zone at the narrowest part of the lip, individually or in combination thereof, serve to maximize interfacial lubrication in severe operating conditions, and also serve to minimize lubricant shear area, seal torque, seal volume, and wear, while ensuring retrofitability into the seal grooves of existing equipment.

Dietle, Lannie Laroy; Schroeder, John Erick

2013-10-08T23:59:59.000Z

389

Dynamic sub-transmission substation expansion planning using learning automata  

Science Journals Connector (OSTI)

This paper presents a new method to solve the dynamic sub-transmission substation expansion planning (SSEP) in electric power distribution networks. The method employs a new algorithm based on learning automata for optimization process. The developed algorithm includes different electrical constraints such as voltage drops, thermal limits, power flow and radial flow constraints. Moreover, prevalent cost indices are taken into consideration. The proposed method is used to solve the dynamic SSEP for Birjand city, center of South-Khorasan province of Iran, up to the year 2024. In addition, effects of the dynamic and pseudo-dynamic planning models are investigated at the study region and the obtained results are compared to those of genetic algorithm. Detailed numerical results and comparisons presented in the paper show that the proposed approach leads to proper solutions and can be used as an effective tool for the dynamic sub-transmission substation expansion planning in an actual large scale distribution network.

Seyed Mahdi Mazhari; Hassan Monsef

2013-01-01T23:59:59.000Z

390

Distributed chance-constrained task allocation for autonomous multi-agent teams  

E-Print Network [OSTI]

This research presents a distributed chanceconstrained task allocation framework that can be used to plan for multi-agent networked teams operating in stochastic and dynamic environments. The algorithm employs an approximation ...

Ponda, Sameera S.

391

Distributional Implications of Alternative U.S. Greenhouse Gas Control Measures  

E-Print Network [OSTI]

We analyze the distributional and efficiency impacts of different allowance allocation schemes motivated by recently proposed U.S. climate legislation for a national cap and trade system using a new dynamic computable ...

Paltsev, Sergey

392

Distributional Implications of Alternative U.S. Greenhouse Gas Control Measures  

E-Print Network [OSTI]

We analyze the distributional and efficiency impacts of different allowance allocation schemes for a national cap and trade system using the USREP model, a new recursive dynamic computable general equilibrium model of the ...

Rausch, Sebastian

393

November 2014 PSERC Webinar: Transforming the Grid from the Distribution System Out  

Broader source: Energy.gov [DOE]

On November 4, 2014, the DOE-funded Power Systems Engineering Research Center (PSERC) is offering a free public webinar presenting the challenges and opportunities associated with dynamic distribution system architecture.

394

Parton distributions for the LHC Run II  

E-Print Network [OSTI]

We present NNPDF3.0, the first set of parton distribution functions (PDFs) determined with a methodology validated by a closure test. NNPDF3.0 uses a global dataset including HERA-II deep-inelastic inclusive cross-sections, the combined HERA charm data, jet production from ATLAS and CMS, vector boson rapidity and transverse momentum distributions from ATLAS, CMS and LHCb, W+c data from CMS and top quark pair production total cross sections from ATLAS and CMS. Results are based on LO, NLO and NNLO QCD theory and also include electroweak corrections. To validate our methodology, we show that PDFs determined from pseudo-data generated from a known underlying law correctly reproduce the statistical distributions expected on the basis of the assumed experimental uncertainties. This closure test ensures that our methodological uncertainties are negligible in comparison to the generic theoretical and experimental uncertainties of PDF determination. This enables us to determine with confidence PDFs at different perturbative orders and using a variety of experimental datasets ranging from HERA-only up to a global set including the latest LHC results, all using precisely the same validated methodology. We explore some of the phenomenological implications of our results for the upcoming 13 TeV Run of the LHC, in particular for Higgs production cross-sections.

The NNPDF Collaboration; Richard D. Ball; Valerio Bertone; Stefano Carrazza; Christopher S. Deans; Luigi Del Debbio; Stefano Forte; Alberto Guffanti; Nathan P. Hartland; Jose I. Latorre; Juan Rojo; Maria Ubiali

2014-11-06T23:59:59.000Z

395

LIMITED POWER BURSTS IN DISTRIBUTED MODELS OF NUCLEAR REACTORS  

E-Print Network [OSTI]

LIMITED POWER BURSTS IN DISTRIBUTED MODELS OF NUCLEAR REACTORS M. V. Bazhenov and E. F. Sabaev UDC employed for analyzing reactor dynamics. Equations of this type are used for analyzing the stability of the reactor power, etc. Among these problems the question of the boundedness of reactor power bursts

Bazhenov, Maxim

396

Cooper: Noncompliance Determination (2012-SE-4701) | Department of Energy  

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

Cooper: Noncompliance Determination (2012-SE-4701) Cooper: Noncompliance Determination (2012-SE-4701) Cooper: Noncompliance Determination (2012-SE-4701) June 12, 2012 DOE issued a Notice of Noncompliance Determination to Cooper Power Systems, LLC finding that basic models 277-99.28, 277-99.26, and 277-99.22 of distribution transformers do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Cooper must immediately notify each person (or company) to whom Cooper distributed the noncompliant products that the products do not meet Federal standards. In addition, Cooper must provide to DOE documents and records showing the number of units Cooper distributed and to whom. The manufacturer and/or private labeler of the product may

397

CX-006054: Categorical Exclusion Determination | Department of Energy  

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

054: Categorical Exclusion Determination 054: Categorical Exclusion Determination CX-006054: Categorical Exclusion Determination San Diego Gas & Electric Borrego Springs Microgrid Demo (Utility Integration of Distributed Energy Storage Systems) CX(s) Applied: A1, A9, B3.11, B4.4 Date: 06/07/2011 Location(s): Borrego Springs, California Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory Install energy storage devices at various locations along an existing distribution feeder and connect them to the utility grid at the secondary voltage terminals of existing distribution transformers. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-006054.pdf More Documents & Publications CX-000312: Categorical Exclusion Determination CX-000313: Categorical Exclusion Determination

398

Central Moloney: Noncompliance Determination (2013-SE-4702) | Department of  

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

Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Noncompliance Determination (2013-SE-4702) March 11, 2013 DOE issued a Notice of Noncompliance Determination to Central Moloney, Inc. finding that liquid-immersed distribution transformer basic models 30300150 and 32500095 do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Central Moloney must immediately notify each person (or company) to whom Central Moloney distributed the noncompliant products that the products do not meet Federal standards. In addition, Central Moloney must provide to DOE documents and records showing the number of units Central Moloney distributed and to whom. The manufacturer and/or private labeler

399

Coal Distribution Database, 2008  

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

Origin State, Origin State, Consumer, Destination and Method of Transportation 3Q 2009 February 2010 Quarterly Coal Distribution Table Format and Data Sources 3Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal Distribution Report is a preliminary report, based on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. The final report will rely on the receipt of annual data to replace the imputed monthly data for smaller electric generation plants that are excluded from the monthly filing requirement, and final data for all other respondents. The Coal Distribution Report traces coal from the origin State to the destination State by

400

distribution | OpenEI  

Open Energy Info (EERE)

distribution distribution Dataset Summary Description This dataset represents a historical repository of all the numerical data from the smartgrid.gov website condensed into spreadsheets to enable analysis of the data. Below are a couple of things worth noting: Source Smartgrid.gov Date Released March 04th, 2013 (11 months ago) Date Updated March 04th, 2013 (11 months ago) Keywords AMI costs distribution smart grid transmission Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon SmartGrid.gov Quarterly Data Summary 4Q12 (xlsx, 112.1 KiB) application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon SmartGrid.gov Quarterly Data Summary 3Q12 (xlsx, 107.9 KiB) application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon SmartGrid.gov Quarterly Data Summary 2Q12 (xlsx, 111.9 KiB)

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Computing Frontier: Distributed Computing  

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

Computing Computing Frontier: Distributed Computing and Facility Infrastructures Conveners: Kenneth Bloom 1 , Richard Gerber 2 1 Department of Physics and Astronomy, University of Nebraska-Lincoln 2 National Energy Research Scientific Computing Center (NERSC), Lawrence Berkeley National Laboratory 1.1 Introduction The field of particle physics has become increasingly reliant on large-scale computing resources to address the challenges of analyzing large datasets, completing specialized computations and simulations, and allowing for wide-spread participation of large groups of researchers. For a variety of reasons, these resources have become more distributed over a large geographic area, and some resources are highly specialized computing machines. In this report for the Snowmass Computing Frontier Study, we consider several questions about distributed computing

402

Distributed Wind Market Applications  

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

Distributed Wind Market Distributed Wind Market Applications T. Forsyth and I. Baring-Gould Technical Report NREL/TP-500-39851 November 2007 NREL is operated by Midwest Research Institute ● Battelle Contract No. DE-AC36-99-GO10337 National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute * Battelle Contract No. DE-AC36-99-GO10337 Technical Report NREL/TP-500-39851 November 2007 Distributed Wind Market Applications T. Forsyth and I. Baring-Gould Prepared under Task No. WER6.7502 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

403

Hydrogen Pathway Cost Distributions  

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

Pathway Cost Distributions Pathway Cost Distributions Jim Uihlein Fuel Pathways Integration Tech Team January 25, 2006 2 Outline * Pathway-Independent Cost Goal * Cost Distribution Objective * Overview * H2A Influence * Approach * Implementation * Results * Discussion Process * Summary 3 Hydrogen R&D Cost Goal * Goal is pathway independent * Developed through a well defined, transparent process * Consumer fueling costs are equivalent or less on a cents per mile basis * Evolved gasoline ICE and gasoline-electric hybrids are benchmarks * R&D guidance provided in two forms * Evolved gasoline ICE defines a threshold hydrogen cost used to screen or eliminate options which can't show ability to meet target * Gasoline-electric hybrid defines a lower hydrogen cost used to prioritize projects for resource allocation

404

Coal Distribution Database, 2008  

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

Destination State, Destination State, Consumer, Destination and Method of Transportation 3Q 2009 February 2010 Quarterly Coal Distribution Table Format and Data Sources 3Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal Distribution Report is a preliminary report, based on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. The final report will rely on the receipt of annual data to replace the imputed monthly data for smaller electric generation plants that are excluded from the monthly filing requirement, and final data for all other respondents. The Coal Distribution Report traces coal from the origin State to the destination State by

405

Discrete Pearson distributions  

SciTech Connect (OSTI)

These distributions are generated by a first order recursive scheme which equates the ratio of successive probabilities to the ratio of two corresponding quadratics. The use of a linearized form of this model will produce equations in the unknowns matched by an appropriate set of moments (assumed to exist). Given the moments we may find valid solutions. These are two cases; (1) distributions defined on the non-negative integers (finite or infinite) and (2) distributions defined on negative integers as well. For (1), given the first four moments, it is possible to set this up as equations of finite or infinite degree in the probability of a zero occurrence, the sth component being a product of s ratios of linear forms in this probability in general. For (2) the equation for the zero probability is purely linear but may involve slowly converging series; here a particular case is the discrete normal. Regions of validity are being studied. 11 refs.

Bowman, K.O. [Oak Ridge National Lab., TN (United States); Shenton, L.R. [Georgia Univ., Athens, GA (United States); Kastenbaum, M.A. [Kastenbaum (M.A.), Basye, VA (United States)

1991-11-01T23:59:59.000Z

406

Draft General Conformity Determination  

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

I I Draft General Conformity Determination U.S. Department of the Interior Minerals Management Service MMS Cape Wind Energy Project January 2009 Final EIS Appendix I Draft General Conformity Determination Draft General Conformity Determination Cape Wind Energy Project Prepared by Minerals Management Service Herndon, VA November 2008 i TABLE OF CONTENTS 1.0 INTRODUCTION TO THE PROPOSED ACTION............................................................... 1 2.0 GENERAL CONFORMITY REGULATORY BACKGROUND .......................................... 2 2.1 GENERAL CONFORMITY REQUIREMENTS.................................................................... 2 2.2 GENERAL CONFORMITY APPLICABILITY.....................................................................

407

Carrier-carrier scattering in the gain dynamics of InxGa1-xAs/AlyGa1-yAs diode lasers  

Science Journals Connector (OSTI)

Ultrafast optical nonlinearities in semiconductors play a central role in determining transient amplification and pulse-dependent gain saturation in diode lasers. Both carrier-phonon and carrier-carrier scattering are expected to determine the gain dynamics in these systems. We present a relaxation-time approximation model for carrier-carrier scattering in strained-layer lasers. The carrier-carrier scattering rates are determined using the quasiequilibrium distribution functions for a given background carrier density. The distribution function to which the photoexcited distribution relaxes is a Fermi-Dirac function where the chemical potential and temperature are self-consistently chosen so that both particle number and energy are conserved in the carrier-carrier scattering process. The relaxation approximation makes the problem an effective one-dimensional problem which can then be solved directly for the carrier distributions using an adaptive Runge-Kutta routine. This procedure is less computationally intensive than a full Monte Carlo simulation. The results show that the inclusion of carrier-carrier scattering improves previous results where only carrier-phonon scattering was included and that carrier-carrier scattering is necessary to produce heating of the carriers in the high-energy tails. 1996 The American Physical Society.

G. D. Sanders; C.-K. Sun; B. Golubovic; J. G. Fujimoto; C. J. Stanton

1996-09-15T23:59:59.000Z

408

Distribution System Research Priorities  

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

Mark McGranaghan Mark McGranaghan EPRI ELECTRICITY DISTRIBUTION SYSTEM WORKSHOP Crystal City, VA September 24, 2012 Distribution System Research Priorities 2 © 2012 Electric Power Research Institute, Inc. All rights reserved. The Power System Roadmaps start with a Vision Future Power System will require new technologies, infrastructure, and control systems 3 © 2012 Electric Power Research Institute, Inc. All rights reserved. R&D Roadmaps - Coordination is Critical Roadmaps are living documents 4 © 2012 Electric Power Research Institute, Inc. All rights reserved. Developing the next generation grid * Industry needs new technologies, communication protocols, and information management methods - More variable generation sources and controllable loads - Aging infrastructure

409

Protein synthesis driven by dynamical stochastic transcription  

E-Print Network [OSTI]

In this letter we propose a mathematical framework to couple transcription and translation in which mRNA production is described by a set of master equations while the dynamics of protein density is governed by a random differential equation. The coupling between the two processes is given by a stochastic perturbation whose statistics satisfies the master equations. In this approach, from the knowledge of the analytical time dependent distribution of mRNA number, we are able to calculate the dynamics of the probability density of the protein population.

Guilherme C. P. Innocentini; Michael Forger; Fernando Antoneli

2014-06-12T23:59:59.000Z

410

A stochastic evolutionary model for survival dynamics  

E-Print Network [OSTI]

The recent interest in human dynamics has led researchers to investigate the stochastic processes that explain human behaviour in different contexts. Here we propose a generative model to capture the essential dynamics of survival analysis, traditionally employed in clinical trials and reliability analysis in engineering. In our model, the only implicit assumption made is that the longer an actor has been in the system, the more likely it is to have failed. We derive a power-law distribution for the process and provide preliminary empirical evidence for the validity of the model from two well-known survival analysis data sets.

Fenner, Trevor; Loizou, George

2014-01-01T23:59:59.000Z

411

Orchestrating Distributed Resource Ensembles for Petascale Science  

SciTech Connect (OSTI)

Distributed, data-intensive computational science applications of interest to DOE scientific com- munities move large amounts of data for experiment data management, distributed analysis steps, remote visualization, and accessing scientific instruments. These applications need to orchestrate ensembles of resources from multiple resource pools and interconnect them with high-capacity multi- layered networks across multiple domains. It is highly desirable that mechanisms are designed that provide this type of resource provisioning capability to a broad class of applications. It is also important to have coherent monitoring capabilities for such complex distributed environments. In this project, we addressed these problems by designing an abstract API, enabled by novel semantic resource descriptions, for provisioning complex and heterogeneous resources from multiple providers using their native provisioning mechanisms and control planes: computational, storage, and multi-layered high-speed network domains. We used an extensible resource representation based on semantic web technologies to afford maximum flexibility to applications in specifying their needs. We evaluated the effectiveness of provisioning using representative data-intensive ap- plications. We also developed mechanisms for providing feedback about resource performance to the application, to enable closed-loop feedback control and dynamic adjustments to resource allo- cations (elasticity). This was enabled through development of a novel persistent query framework that consumes disparate sources of monitoring data, including perfSONAR, and provides scalable distribution of asynchronous notifications.

Baldin, Ilya; Mandal, Anirban; Ruth, Paul; Yufeng, Xin

2014-04-24T23:59:59.000Z

412

Gravitational Lensing & Stellar Dynamics: Dark-Matter and Baryons in Early-type Galaxies to z=1  

E-Print Network [OSTI]

Gravitational lensing and stellar dynamics provide two complementary, nearly orthogonal, constraints on the mass distribution of early-type lens galaxies. This allows the luminous and dark-matter distribution in higher-redshift (z>0.1) galaxies to be studied beyond the limitations of each individual method. Two surveys have been initiated to compile a large sample of early-type galaxies suitable to lensing and dynamical studies: (1) The Lenses Structure & Dynamics (LSD) Survey and (2) the Sloan Lens ACS (SLACS) Survey. Using spherically symmetric mass models, I illustrated how lensing and dynamical constraints can be used to measure the ``effective'' density slope (gamma') of galaxies inside their Einstein radii and estimate the typical error on this determination. The main results from the LSD survey thus far are: (i) Massive (typically >L_*) early-type galaxies at z=0.5-1 contain a significant fraction f_CDM=0.4-0.7 of dark matter inside their Einstein radii. [The null-hypothesis, f_CDM=0, is excluded at the >99% in all analyzed systems.] (ii) The inner CDM density slope is gamma_CDM=1.3^{+0.2}_{-0.3} (68% CL). (iii) The total density slope gamma' = 1.9 +- 0.1 (with 0.3 rms scatter in the sample). The intrinsic scatter of 15% in gamma' is consistent with local dynamical studies and can lead to a 30% rms scatter in inferred values of H_0 from lens time-delays, when purely isothermal mass models are assumed. Hence, the common practice to assume that lens galaxies are perfectly isothermal should be abandoned, especially in cases where this assumption is critical.

L. V. E. Koopmans

2004-12-22T23:59:59.000Z

413

Nek5000: Computational Fluid Dynamics Code | Argonne National Laboratory  

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

Nek5000: Computational Fluid Dynamics Code Nek5000: Computational Fluid Dynamics Code Nuclear reactor simulation: An elevation plot of the highest energy neutron flux distributions from an axial slice of a nuclear reactor core is shown superimposed over the same slice of the underlying geometry. This figure shows the rapid spatial variation in the high energy neutron distribution between within each plate along with the more slowly varying, global distribution. The figure is significant since UNIC allows researchers to capture both of these effects simultaneously. Nuclear reactor simulation: An elevation plot of the highest energy neutron flux distributions from an axial slice of a nuclear reactor core is shown superimposed over the same slice of the underlying geometry. This figure shows the rapid spatial variation in the high energy neutron distribution

414

Turbo Dynamics | Open Energy Information  

Open Energy Info (EERE)

Turbo Dynamics Turbo Dynamics Jump to: navigation, search Name Turbo Dynamics Address 3235 River rd. Place Toledo, Ohio Zip 43614 Sector Biomass, Buildings, Efficiency, Renewable Energy, Services, Solar Product Agriculture; Consulting;Energy audits/weatherization; Engineering/architectural/design;Installation; Maintenance and repair;Manufacturing; Research and development;Retail product sales and distribution;Trainining and education Phone number 419-382-7287 Website http://www.turbodradial.com Coordinates 41.607247°, -83.591719° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.607247,"lon":-83.591719,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

415

Innovation flow through social networks: Productivity distribution  

E-Print Network [OSTI]

A detailed empirical analysis of the productivity of non financial firms across several countries and years shows that productivity follows a non-Gaussian distribution with power law tails. We demonstrate that these empirical findings can be interpreted as consequence of a mechanism of exchanges in a social network where firms improve their productivity by direct innovation or/and by imitation of other firm's technological and organizational solutions. The type of network-connectivity determines how fast and how efficiently information can diffuse and how quickly innovation will permeate or behaviors will be imitated. From a model for innovation flow through a complex network we obtain that the expectation values of the productivity level are proportional to the connectivity of the network of links between firms. The comparison with the empirical distributions reveals that such a network must be of a scale-free type with a power-law degree distribution in the large connectivity range.

T. Di Matteo; T. Aste; M. Gallegati

2004-06-19T23:59:59.000Z

416

Efficient distributed quantum computing  

Science Journals Connector (OSTI)

...model of a distributed quantum computer. As a result, the circuit...algorithms and the way that quantum computers are likely to be implemented...W.H. was funded by NSF grant nos 0916400, 0829937, 0803478...Large scale modular quantum computer architecture with atomic memory...

2013-01-01T23:59:59.000Z

417

Building diagnosable distributed systems  

E-Print Network [OSTI]

Building diagnosable distributed systems Petros Maniatis Intel Research Berkeley ICSI ­ Security] Project response@R (R, K, SI) lookup response Specification #12;2/8/2006 Petros Maniatis9 Strawman Design Join lookup.NI == node.NI Join lookup.NI == succ.NI Select K in (N, S] Project response@R (R, K, SI

Maniatis, Petros

418

Distribution and Market Share  

Science Journals Connector (OSTI)

Abstract This paper presents findings from a census of more than 79,000 stock-keeping units (SKUs) in 37 consumer packaged goods categories totaling $55 billion in annual revenue. It shows that, in 86 percent of product categories, the relationship between market share and retail distribution is increasing and convex at the SKU level. The degree of convexity is greater in categories with higher revenues and more concentration in market shares. The relationship is also typically convex within leading brands SKU portfolios, showing that the double jeopardy phenomenon of low share and distribution not only affects small brands competing against market leaders, it also affects low-share \\{SKUs\\} within a category leader's product line. Holdout evidence shows that the distribution/share relationship within a brand's portfolio of existing \\{SKUs\\} usually holds for new \\{SKUs\\} as well. We explain how knowledge of the distribution/share relationship can help to improve a brand's go-to-market decisions for new SKUs.

Kenneth C. Wilbur; Paul W. Farris

2014-01-01T23:59:59.000Z

419

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

3, 2010 3, 2010 CX-002242: Categorical Exclusion Determination Micro-X-Ray Diffraction Laboratory CX(s) Applied: B3.6 Date: 05/13/2010 Location(s): Pittsburgh, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory May 13, 2010 CX-002241: Categorical Exclusion Determination Maximizing Alternative Fuel Use and Distribution in Colorado CX(s) Applied: B5.1 Date: 05/13/2010 Location(s): Aurora, Colorado Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory May 13, 2010 CX-002240: Categorical Exclusion Determination Heavy Oil Viscous Pressure-Volume Temperature (PVT) - Houston CX(s) Applied: B3.6 Date: 05/13/2010 Location(s): Houston, Texas Office(s): Fossil Energy, National Energy Technology Laboratory May 13, 2010 CX-002238: Categorical Exclusion Determination

420

Categorical Exclusion Determinations: American Recovery and Reinvestment  

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

18, 2009 18, 2009 CX-000250: Categorical Exclusion Determination WA County Kitsap CX(s) Applied: A9, A11, B5.1 Date: 12/18/2009 Location(s): Washington Office(s): Energy Efficiency and Renewable Energy, Golden Field Office December 18, 2009 CX-000142: Categorical Exclusion Determination Village of Venetie Energy Distribution Project CX(s) Applied: B2.5, B5.1 Date: 12/18/2009 Location(s): Venetie, Alaska Office(s): Energy Efficiency and Renewable Energy December 18, 2009 CX-000141: Categorical Exclusion Determination Village of Kaltag Energy Audits CX(s) Applied: B5.1, A9, A11 Date: 12/18/2009 Location(s): Kaltag, Alaska Office(s): Energy Efficiency and Renewable Energy December 18, 2009 CX-000140: Categorical Exclusion Determination Shageluk Native Village Renewable Energy Technology - Solar

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


421

Categorical Exclusion Determinations: Illinois | Department of Energy  

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

June 24, 2010 June 24, 2010 CX-002816: Categorical Exclusion Determination Donnewald Distributing, MBJ Inc. CX(s) Applied: B5.1 Date: 06/24/2010 Location(s): Illinois Office(s): Energy Efficiency and Renewable Energy, Golden Field Office June 24, 2010 CX-002815: Categorical Exclusion Determination Columbia Community Unit School District 4 - Middle School Renovation CX(s) Applied: B5.1 Date: 06/24/2010 Location(s): Columbia, Illinois Office(s): Energy Efficiency and Renewable Energy, Golden Field Office June 23, 2010 CX-002826: Categorical Exclusion Determination Industrial Area Site Upgrade Project CX(s) Applied: B1.15 Date: 06/23/2010 Location(s): Batavia, Illinois Office(s): Fermi Site Office, Science June 23, 2010 CX-002814: Categorical Exclusion Determination City of Arcola 40 Kilowatt Wind Turbine Project

422

Categorical Exclusion Determinations: American Recovery and Reinvestment  

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

September 23, 2009 September 23, 2009 CX-004577: Categorical Exclusion Determination Native Village of Napaimute of Alaska Energy Distribution CX(s) Applied: B3.6, B5.1 Date: 09/23/2009 Location(s): Napamiute, Alaska Office(s): Energy Efficiency and Renewable Energy September 23, 2009 CX-000476: Categorical Exclusion Determination 331 Building Irrigation Upgrades, 300 Area CX(s) Applied: B2.5 Date: 09/23/2009 Location(s): Richland, Washington Office(s): Science, Pacific Northwest Site Office September 21, 2009 CX-000793: Categorical Exclusion Determination Electrical Isolations at 740-A Trailer Complex CX(s) Applied: B4.10 Date: 09/21/2009 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office September 21, 2009 CX-000530: Categorical Exclusion Determination

423

Macroalgal distribution at Lee Stocking Island, Bahamas  

E-Print Network [OSTI]

cover) H' ln S H' = generic diversity S = ? of genera ln S = maximum possible generic diversity Kruskal-Wallis tests, which are distribution free analysis of variance techniques, were conducted to determine if significant differences occurred... comparisons between study sites (sampling periods combined). Based on the Kruskal-Wallis Test, ns indicates there was no significant difference. Sites Percent Cover Standard Deviation Statistical Significance Differences Iguana Norman's Pond North...

Roberts, Jill Christie

2012-06-07T23:59:59.000Z

424

Essays in dynamic contracting  

E-Print Network [OSTI]

This thesis examines three models of dynamic contracting. The first model is a model of dynamic moral hazard with partially persistent states, and the second model considers relational contracts when the states are partially ...

Kwon, Suehyun

2012-01-01T23:59:59.000Z

425

STUDIA FORESTALIA SUECICA Wood resource dynamics in the  

E-Print Network [OSTI]

way or another. Wood Resource Dynamics (i.e. this volunze) describes the historical back- ground . . . . . . . . . . 3.2 Act one: Development determined by . . . . . . .free market forces 3.3 Act two: Government price

García, Oscar

426

Strategic dynamic vehicle routing with spatio-temporal dependent demands  

E-Print Network [OSTI]

Dynamic vehicle routing problems address the issue of determining optimal routes for a set of vehicles, to serve a given set of demands that arrive sequentially in time. Traditionally, demands are assumed to be generated ...

Feijer, Diego (Diego Francisco Feijer Rovira)

2011-01-01T23:59:59.000Z

427

Resuspension Processes and Seston Dynamics, Southern North Sea [and Discussion  

Science Journals Connector (OSTI)

...June 1993 research-article Resuspension Processes and Seston Dynamics...processes associated with particle resuspension and seston flux was investigated...determined by a combination of local resuspension and advection of a regional...

1993-01-01T23:59:59.000Z

428

Dynamic characteristics analysis of the offshore wind turbine blades  

Science Journals Connector (OSTI)

The topic of offshore wind energy is attracting more and more attention ... . The blades are the key components of offshore wind turbines, and their dynamic characteristics directly determine the effectiveness of...

Jing Li; Jianyun Chen; Xiaobo Chen

2011-03-01T23:59:59.000Z

429

Probabilistic and Resilient Distributed Architectures  

E-Print Network [OSTI]

projects for undergraduates that integrate multiple disciplines, e.g., protein folding and distributed

Heaton, Thomas H.

430

Distributed Acoustic and Seismic Sensing  

Science Journals Connector (OSTI)

An overview of fiber optic distributed acoustic and seismic sensor system architectures is presented.

Kirkendall, Clay

431

Distributed XML Design Serge Abiteboul  

E-Print Network [OSTI]

Distributed XML Design Serge Abiteboul INRIA Saclay ­ ?le-de-France & University Paris Sud, FR that a distribution design of the document tree is given, provid- ing an XML tree some of whose leaves are "docking.4 [Distributed Systems]: Distributed databases; H.2.1 [Logical Design]: Data models; Schema and subschema General

Paris-Sud XI, Université de

432

Distributed Energy Alternatives to Electrical  

E-Print Network [OSTI]

Distributed Energy Alternatives to Electrical Distribution Grid Expansion in Consolidated Edison.www.gastechnology.org 2 #12;Distributed Energy Alternatives to Electrical Distribution Grid Expansion in Consolidated-Battelle for the Department of Energy Subcontract Number: 4000052360 GTI Project Number: 20441 New York State Energy Research

Pennycook, Steve

433

CX-003045: Categorical Exclusion Determination | Department of Energy  

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

045: Categorical Exclusion Determination 045: Categorical Exclusion Determination CX-003045: Categorical Exclusion Determination Computational Fluid Dynamics (CFD) Simulations of a Regenerative Process for Carbon Dioxide Capture in Advanced Gasification Based Systems CX(s) Applied: B3.6 Date: 07/19/2010 Location(s): Chicago, Illinois Office(s): Fossil Energy, National Energy Technology Laboratory The overall objective of the proposed program is to develop a computational fluid dynamics (CFD) model and to perform CFD simulations to describe the heterogeneous gas-solid absorption/regeneration and water gas shift (WGS) reactions. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-003045.pdf More Documents & Publications CX-004510: Categorical Exclusion Determination CX-004511: Categorical Exclusion Determination

434

CX-003953: Categorical Exclusion Determination | Department of Energy  

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

53: Categorical Exclusion Determination 53: Categorical Exclusion Determination CX-003953: Categorical Exclusion Determination Dynamic Underground Stripping (Solvent Storage Tank Area) and Dense Nonaqeous Phase Liquid Characterization Soil Borings CX(s) Applied: B3.1 Date: 09/15/2010 Location(s): Aiken, South Carolina Office(s): Savannah River Operations Office There will be 1 soil boring drilled to support post closure of the dynamic underground stripping (DUS) project at the 321-M solvent storage tank area (SSTA) and 7 soil borings to support dense nonaqueous phase liquid (DNAPL) characterization near the A-014 Outfall. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-003953.pdf More Documents & Publications CX-006393: Categorical Exclusion Determination CX-006394: Categorical Exclusion Determination CX-006410

435

CX-008632: Categorical Exclusion Determination | Department of Energy  

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

2: Categorical Exclusion Determination 2: Categorical Exclusion Determination CX-008632: Categorical Exclusion Determination Sampling of Soil Vapor Extraction Wells at the Western Sector Dynamic Underground Stripping System CX(s) Applied: B3.1 Date: 06/04/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office Sampling of the soil vapor extraction (SVE) wells at the Western Sector Dynamic Underground Stripping System (DUS) has been routinely performed by Area Completion Projects (ACP) Operations personnel since 2005. The purpose of the present sampling is to identify candidates for abandonment or to switch from active to passive SVE operation. CX-008632.pdf More Documents & Publications CX-008633: Categorical Exclusion Determination CX-010657: Categorical Exclusion Determination

436

CX-007691: Categorical Exclusion Determination | Department of Energy  

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

91: Categorical Exclusion Determination 91: Categorical Exclusion Determination CX-007691: Categorical Exclusion Determination Varentec Inc. - Compact Dynamic Phase Angle Regulators for Transmission Power Routing CX(s) Applied: A9, B3.6 Date: 11/30/2011 Location(s): California, Georgia, Tennessee, Wisconsin Offices(s): Advanced Research Projects Agency-Energy Funding will support development of Compact Dynamic Phase Angle Regulators (CD-PAR), a compact, low-cost power flow controller integrated with custom-wound transformers to control grid power flow, reducing the number of new transmission lines that will be required to meet increased renewable energy penetration. CX-007691.pdf More Documents & Publications CX-007725: Categorical Exclusion Determination CX-007739: Categorical Exclusion Determination

437

Intramolecular and nonlinear dynamics  

SciTech Connect (OSTI)

Research in this program focuses on three interconnected areas. The first involves the study of intramolecular dynamics, particularly of highly excited systems. The second area involves the use of nonlinear dynamics as a tool for the study of molecular dynamics and complex kinetics. The third area is the study of the classical/quantum correspondence for highly excited systems, particularly systems exhibiting classical chaos.

Davis, M.J. [Argonne National Laboratory, IL (United States)

1993-12-01T23:59:59.000Z

438

DYNAMIC SCHEDULING M. C. H. Wright  

E-Print Network [OSTI]

for a time interval after which control is returned to the scheduling program to determine the best project who wants more time to evaluate their data can return control to the scheduling program, and come backDYNAMIC SCHEDULING M. C. H. Wright Radio Astronomy Laboratory, University of California, Berkeley

Militzer, Burkhard

439

QCD thermodynamics with dynamical overlap fermions  

E-Print Network [OSTI]

We study QCD thermodynamics using two flavors of dynamical overlap fermions with quark masses corresponding to a pion mass of 350 MeV. We determine several observables on N_t=6 and 8 lattices. All our runs are performed with fixed global topology. Our results are compared with staggered ones and a nice agreement is found.

S. Borsanyi; Y. Delgado; S. Durr; Z. Fodor; S. D. Katz; S. Krieg; T. Lippert; D. Nogradi; K. K. Szabo

2012-04-18T23:59:59.000Z

440

Massive Stars: Their Birth Sites and Distribution  

E-Print Network [OSTI]

The stellar IMF has been found to be an invariant Salpeter power-law (alpha=2.35) above about 1 Msun, but at the same time a massive star typically has more than one companion. This constrains the possible formation scenarios of massive stars, but also implies that the true, binary-star corrected stellar IMF could be significantly steeper than Salpeter, alpha>2.7. A significant fraction of all OB stars are found relatively far from potential birth sites which is most probably a result of dynamical ejections from cores of binary-rich star clusters. Such cores form rapidly due to dynamical mass segregation, or they are primordial. Probably all OB stars thus form in stellar clusters together with low-mass stars, and they have a rather devastating effect on the embedded cluster by rapidly driving out the remaining gas leaving expanding OB associations and bound star clusters. The distributed population of OB stars has a measured IMF with alpha about 4, which however, does not necessarily constitute a different physical mode for isolated star formation. A steep field-star IMF is obtained naturally because stars form in clusters which are distributed according to a power-law cluster mass function.

Pavel Kroupa

2003-09-22T23:59:59.000Z

Note: This page contains sample records for the topic "determination distributed dynamic" 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

CX-007676: Categorical Exclusion Determination | Department of Energy  

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

7676: Categorical Exclusion Determination 7676: Categorical Exclusion Determination CX-007676: Categorical Exclusion Determination Dynamic Compression Sector (DCS) project at Advanced Photon Source CX(s) Applied: B3.6 Date: 01/05/2012 Location(s): Illinois Offices(s): Science, Argonne Site Office The Dynamic Compression Sector (DCS) project scope includes the design, procurement, assembly, installation, testing, and operation of beamline hardware, associated instrumentation, and experimental apparatus required to study materials under dynamic compression. The DCS project also must account for the eventual installation and operation of experimental apparatus (pulsed laser, experimental guns, target vacuum chamber, and associated equipment) that is to be developed by Washington State University (WSU) as a separate project also supported by DOE.

442

Introduction to Focus Issue: Design and Control of Self-Organization in Distributed Active Systems  

E-Print Network [OSTI]

Introduction to Focus Issue: Design and Control of Self-Organization in Distributed Active Systems; published online 27 June 2008 Spatiotemporal self-organization is found in a wide range of distributed describe biological and chemical systems designed to exhibit spatiotemporal dynamics and the control

Showalter, Kenneth

443

Categorical Exclusion Determinations: Georgia | Department of Energy  

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

August 5, 2010 August 5, 2010 CX-003200: Categorical Exclusion Determination City of Lafayette Energy Efficiency Conservation Block Grant CX(s) Applied: B5.1 Date: 08/05/2010 Location(s): Lafayette, Georgia Office(s): Energy Efficiency and Renewable Energy, Golden Field Office August 4, 2010 CX-004939: Categorical Exclusion Determination Georgia Institute of Technology -Dynamic Control of Grid Assets Using Direct Alternate Current Converter Cells CX(s) Applied: B3.6, B5.1 Date: 08/04/2010 Location(s): Georgia Office(s): Advanced Research Projects Agency - Energy July 28, 2010 CX-003174: Categorical Exclusion Determination State Energy Program (SEP) State ENERGY STAR Appliance Rebate Program CX(s) Applied: A9, B5.1 Date: 07/28/2010 Location(s): Georgia Office(s): Energy Efficiency and Renewable Energy, National Energy

444

Categorical Exclusion Determinations: Michigan | Department of Energy  

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

February 16, 2012 February 16, 2012 CX-007936: Categorical Exclusion Determination Smart Grid Capable Electric Vehicle Supply Equipment CX(s) Applied: A1, A11 Date: 02/16/2012 Location(s): New Jersey, North Carolina, Michigan Offices(s): National Energy Technology Laboratory February 10, 2012 CX-007896: Categorical Exclusion Determination Bottom Fixed Platform Dynamics Models Assessing Surface Ice Interactions for Transitional Depth Structures in the Great Lakes CX(s) Applied: A9 Date: 02/10/2012 Location(s): Michigan Offices(s): Golden Field Office January 18, 2012 CX-007606: Categorical Exclusion Determination General Motors Battery Pack Assembly Plant - Electric Substation Upgrade CX(s) Applied: A9, A11 Date: 01/18/2012 Location(s): Michigan Offices(s): National Energy Technology Laboratory

445

Categorical Exclusion Determinations: California | Department of Energy  

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

April 28, 2011 April 28, 2011 CX-005658: Categorical Exclusion Determination International Colloquium on Environmentally Preferred Advanced Power Generation - ICEPAG 2011 CX(s) Applied: A9 Date: 04/28/2011 Location(s): Irvine, California Office(s): Fossil Energy, National Energy Technology Laboratory April 19, 2011 CX-005633: Categorical Exclusion Determination Fast Responding Voltage Regulator and Dynamic VAR Compensator with Direct Medium Voltage Connection CX(s) Applied: A1, A11, B3.6, B4.4, B5.1 Date: 04/19/2011 Location(s): San Jose, California Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory April 13, 2011 CX-007094: Categorical Exclusion Determination Internal Fence Reconfiguration CX(s) Applied: B1.11 Date: 04/13/2011 Location(s): Albuquerque, California, New Mexico

446

Categorical Exclusion Determinations: American Recovery and Reinvestment  

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

3, 2010 3, 2010 CX-002430: Categorical Exclusion Determination Rattlesnake-Garrison Number-1 Wood Pole Installation CX(s) Applied: B1.13, B4.6, B1.3 Date: 05/13/2010 Location(s): Missoula County, Montana Office(s): Bonneville Power Administration May 13, 2010 CX-002238: Categorical Exclusion Determination Evaluation of Instrumentation and Dynamic Thermal Circuit Rating (DTCR) for Overhead Lines CX(s) Applied: B3.11, B4.6 Date: 05/13/2010 Location(s): St. Lawrence County, New York Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory May 13, 2010 CX-002575: Categorical Exclusion Determination Blacksburg Virginia: Energy Efficiency and Conservation Plan Development CX(s) Applied: B2.5, A1, A9, B1.2, B5.1 Date: 05/13/2010 Location(s): Blacksburg, Virginia

447

Categorical Exclusion Determinations: Ohio | Department of Energy  

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

August 26, 2010 August 26, 2010 CX-003536: Categorical Exclusion Determination High-Bandwidth Modulation of Hydrogen/Syngas Fuel to Control Combustor Dynamics CX(s) Applied: B3.6 Date: 08/26/2010 Location(s): Mentor, Ohio Office(s): Fossil Energy, National Energy Technology Laboratory August 26, 2010 CX-003530: Categorical Exclusion Determination Zero Carbon Impact Vehicle and Photovoltaic Array CX(s) Applied: A1, A9, B1.3, B5.1 Date: 08/26/2010 Location(s): Lorain County, Ohio Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory August 26, 2010 CX-003529: Categorical Exclusion Determination Substation Preventive Maintenance Program CX(s) Applied: A1, A9, B1.3, B5.1 Date: 08/26/2010 Location(s): Ottawa, Ohio Office(s): Electricity Delivery and Energy Reliability, National Energy

448

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

3, 2010 3, 2010 CX-003766: Categorical Exclusion Determination Development of High Rate Coating Technology for Low Cost Electrochemical Dynamic Windows CX(s) Applied: B3.6 Date: 09/03/2010 Location(s): Berkeley, California Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory September 3, 2010 CX-003761: Categorical Exclusion Determination Ramgen Supersonic Shock Wave Compression and Engine Technology CX(s) Applied: B3.6 Date: 09/03/2010 Location(s): Redmond, Washington Office(s): Fossil Energy, National Energy Technology Laboratory September 3, 2010 CX-003759: Categorical Exclusion Determination Geological Sequestration Fundamental Research Lab Move CX(s) Applied: B3.6 Date: 09/03/2010 Location(s): Pittsburgh, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory

449

Hydac: Noncompliance Determination (2012-SE-4107) | Department of Energy  

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

Noncompliance Determination (2012-SE-4107) Noncompliance Determination (2012-SE-4107) Hydac: Noncompliance Determination (2012-SE-4107) November 19, 2012 DOE issued a Notice of Noncompliance Determination to Hydac Technology Corporation finding that a variety of electric motor basic models do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Hydac must immediately notify each person (or company) to whom Hydac distributed the noncompliant products that the products do not meet Federal standards. In addition, Hydac must provide to DOE documents and records showing the number of units Hydac distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Hydac: Noncompliance Determination (2012-SE-4107)

450

Haier: Noncompliance Determination (2011-SE-1428) | Department of Energy  

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

Haier: Noncompliance Determination (2011-SE-1428) Haier: Noncompliance Determination (2011-SE-1428) Haier: Noncompliance Determination (2011-SE-1428) April 23, 2013 DOE issued a Notice of Noncompliance Determination to Haier America Trading, LLC finding that Haier model HMCM106EA, a freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Haier must immediately notify each person (or company) to whom Haier distributed the noncompliant products that the product does not meet Federal standards. In addition, Haier must provide to DOE documents and records showing the number of units Haier distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Haier: Noncompliance Determination (2011-SE-1428)

451

ET Industries: Noncompliance Determination (2012-SE-2902) | Department of  

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

Noncompliance Determination (2012-SE-2902) Noncompliance Determination (2012-SE-2902) ET Industries: Noncompliance Determination (2012-SE-2902) May 24, 2013 DOE issued a Notice of Noncompliance Determination to ET Industries, Inc. finding that showerhead basic model TH-1 does not comport with the water conservation standards. DOE determined the product was noncompliant based on DOE testing. ET Industries must immediately notify each person (or company) to whom ET Industries distributed the noncompliant products that the product does not meet Federal standards. In addition, ET Industries must provide to DOE documents and records showing the number of units ET Industries distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. ET Industries: Noncompliance Determination (2012-SE-2902)

452

Zoe Industries: Noncompliance Determination (2011-SW-2912) | Department of  

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

Zoe Industries: Noncompliance Determination (2011-SW-2912) Zoe Industries: Noncompliance Determination (2011-SW-2912) Zoe Industries: Noncompliance Determination (2011-SW-2912) September 28, 2011 DOE issued a Notice of Noncompliance Determination to Zoe Industries, Inc. finding that Giessdorf 150043 model, a showerhead, does not comport with the water conservation standards. DOE determined the product was noncompliant based on DOE testing. Zoe must immediately notify each person (or company) to whom Zoe distributed the noncompliant products that the product does not meet Federal standards. In addition, Zoe must provide to DOE documents and records showing the number of units Zoe distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Zoe Industries: Noncompliance Determination (2011-SW-2912)

453

Hudson-Reed: Noncompliance Determination (2011-SW-2909) | Department of  

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

Noncompliance Determination (2011-SW-2909) Noncompliance Determination (2011-SW-2909) Hudson-Reed: Noncompliance Determination (2011-SW-2909) September 28, 2011 DOE issued a Notice of Noncompliance Determination, finding that Hudson-Reed Limited's "HEAD16" showerhead does not meet the applicable water conservation standard. DOE determined the showerhead was noncompliant based on DOE testing. Hudson-Reed must immediately notify each person (or company) to whom Hudson-Reed distributed the noncompliant products that the product does not meet Federal standards. In addition, Hudson-Reed must provide to DOE documents and records showing the number of units Hudson-Reed distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Hudson-Reed: Noncompliance Determination (2011-SW-2909)

454

Strategy Guideline: Compact Air Distribution Systems  

SciTech Connect (OSTI)

This Strategy Guideline discusses the benefits and challenges of using a compact air distribution system to handle the reduced loads and reduced air volume needed to condition the space within an energy efficient home. Traditional systems sized by 'rule of thumb' (i.e., 1 ton of cooling per 400 ft2 of floor space) that 'wash' the exterior walls with conditioned air from floor registers cannot provide appropriate air mixing and moisture removal in low-load homes. A compact air distribution system locates the HVAC equipment centrally with shorter ducts run to interior walls, and ceiling supply outlets throw the air toward the exterior walls along the ceiling plane; alternatively, high sidewall supply outlets throw the air toward the exterior walls. Potential drawbacks include resistance from installing contractors or code officials who are unfamiliar with compact air distribution systems, as well as a lack of availability of low-cost high sidewall or ceiling supply outlets to meet the low air volumes with good throw characteristics. The decision criteria for a compact air distribution system must be determined early in the whole-house design process, considering both supply and return air design. However, careful installation of a compact air distribution system can result in lower material costs from smaller equipment, shorter duct runs, and fewer outlets; increased installation efficiencies, including ease of fitting the system into conditioned space; lower loads on a better balanced HVAC system, and overall improved energy efficiency of the home.

Burdick, A.

2013-06-01T23:59:59.000Z

455

Control algorithms for dynamic attenuators  

SciTech Connect (OSTI)

Purpose: The authors describe algorithms to control dynamic attenuators in CT and compare their performance using simulated scans. Dynamic attenuators are prepatient beam shaping filters that modulate the distribution of x-ray fluence incident on the patient on a view-by-view basis. These attenuators can reduce dose while improving key image quality metrics such as peak or mean variance. In each view, the attenuator presents several degrees of freedom which may be individually adjusted. The total number of degrees of freedom across all views is very large, making many optimization techniques impractical. The authors develop a theory for optimally controlling these attenuators. Special attention is paid to a theoretically perfect attenuator which controls the fluence for each ray individually, but the authors also investigate and compare three other, practical attenuator designs which have been previously proposed: the piecewise-linear attenuator, the translating attenuator, and the double wedge attenuator. Methods: The authors pose and solve the optimization problems of minimizing the mean and peak variance subject to a fixed dose limit. For a perfect attenuator and mean variance minimization, this problem can be solved in simple, closed form. For other attenuator designs, the problem can be decomposed into separate problems for each view to greatly reduce the computational complexity. Peak variance minimization can be approximately solved using iterated, weighted mean variance (WMV) minimization. Also, the authors develop heuristics for the perfect and piecewise-linear attenuators which do not requirea priori knowledge of the patient anatomy. The authors compare these control algorithms on different types of dynamic attenuators using simulated raw data from forward projected DICOM files of a thorax and an abdomen. Results: The translating and double wedge attenuators reduce dose by an average of 30% relative to current techniques (bowtie filter with tube current modulation) without increasing peak variance. The 15-element piecewise-linear dynamic attenuator reduces dose by an average of 42%, and the perfect attenuator reduces dose by an average of 50%. Improvements in peak variance are several times larger than improvements in mean variance. Heuristic control eliminates the need for a prescan. For the piecewise-linear attenuator, the cost of heuristic control is an increase in dose of 9%. The proposed iterated WMV minimization produces results that are within a few percent of the true solution. Conclusions: Dynamic attenuators show potential for significant dose reduction. A wide class of dynamic attenuators can be accurately controlled using the described methods.

Hsieh, Scott S., E-mail: sshsieh@stanford.edu [Department of Radiology, Stanford University, Stanford, California 94305 and Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States); Pelc, Norbert J. [Department of Radiology, Stanford University, Stanford California 94305 and Department of Bioengineering, Stanford University, Stanford, California 94305 (United States)] [Department of Radiology, Stanford University, Stanford California 94305 and Department of Bioengineering, Stanford University, Stanford, California 94305 (United States)

2014-06-15T23:59:59.000Z

456

Size distribution functions for rock fragments  

Science Journals Connector (OSTI)

Abstract The capacity of 17 functions to represent the size distribution of fragmented rock is assessed on 1234 data sets of screened fragments from blasted and crushed rock of different origins, of sizes ranging from 0.002 to 2000mm. The functions evaluated are Weibull, Grady, log-normal, log-logistic and Gilvarry, in their plain, re-scaled and bi-component forms, and also the Swebrec distribution and its bi-component extension. In terms of determination coefficient, the Weibull is the best two-parameter function for describing rock fragments, with a median R2 of 0.9886. Among re-scaled, three-parameter distributions, Swebrec and Weibull lead with median R2 values of 0.9976 and 0.9975, respectively. Weibull and Swebrec distributions tie again as best bi-component, with median R2 of 0.9993. Re-scaling generally reduces the unexplained variance by a factor of about four with respect to the plain function; bi-components further reduce this unexplained variance by a factor of about two to three. Size-prediction errors are calculated in four zones: coarse, central, fines and very fines. Expected and maximum errors in the different ranges are discussed. The extended Swebrec is the best fitting function across the whole passing range for most types of data. Bimodal Weibull and Grady distributions follow, except for the coarse range, where re-scaled forms are preferable. Considering the extra difficulty in fitting a five-parameter function with respect to a three-parameter one, re-scaled functions are the best choice if data do not extend far below 20% passing. If the focus is on the fine range, some re-scaled distributions may still do (Weibull, Swebrec and Grady, with maximum errors of 1520% at 8% passing), but serious consideration should be given to bi-component distributions, especially extended Swebrec, bimodal Weibull and bimodal Grady.

Jos A. Sanchidrin; Finn Ouchterlony; Pablo Segarra; Peter Moser

2014-01-01T23:59:59.000Z

457

Geothermal: Distributed Search Help  

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

Search Help Search Help Geothermal Technologies Legacy Collection Help/FAQ | Site Map | Contact Us | Admin Log On Home/Basic Search About Publications Advanced Search New Hot Docs News Related Links Distributed Search Help Table of Contents General Information Search More about Searching Browse the Geothermal Legacy Collection Obtaining Documents Contact Us General Information The Distributed Search provides a searchable gateway that integrates diverse geothermal resources into one location. It accesses databases of recent and archival technical reports in order to retrieve specific geothermal information - converting earth's energy into heat and electricity, and other related subjects. See About, Help/FAQ, Related Links, or the Site Map, for more information about the Geothermal Technologies Legacy Collection .

458

MEMORANDUM FOR DISTRIBUTION  

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

DISTRIBUTION DISTRIBUTION (;7 FROM: SUBJECT The purpose of this memorandum is to revise the discretionary set-aside authority addressed on Page 13 of Acquisition Letter 2004-03 from $50,000 to $100,000. The paragraph entitled, Discretionary Set-Asides, is revised to read: "Contractors responsible for the management and operation of sites and facilities are authorized to set aside purchases at any dollar value for award to small businesses and to make purchases valued up to $100,000 on a sole source basis to small businesses. If such programs are instituted, the contractor shall assure that awards are to be made at fair market prices." If you have any questions on this subject, please contact Stephen Zvolensky of my staff at (202) 287-1307. Department of Energy

459

Distributed Energy Fuel Cells  

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

Energy Fuel Cells Energy Fuel Cells DOE Hydrogen DOE Hydrogen and and Fuel Cells Fuel Cells Coordination Meeting Fuel Cell Coordination Meeting June 2-3, 2003 Electricity Users Kathi Epping Kathi Epping Objectives & Barriers Distributed Energy OBJECTIVES * Develop a distributed generation PEM fuel cell system operating on natural gas or propane that achieves 40% electrical efficiency and 40,000 hours durability at $400-750/kW by 2010. BARRIERS * Durability * Heat Utilization * Power Electronics * Start-Up Time Targets and Status Integrated Stationary PEMFC Power Systems Operating on Natural Gas or Propane Containing 6 ppm Sulfur 40,000 30,000 15,000 Hours Durability 750 1,250 2,500 $/kWe Cost 40 32 30 % Electrical Efficiency Large (50-250 kW) Systems 40,000 30,000 >6,000 Hours Durability 1,000 1,500 3,000

460

Ken Bettridge Distributing, Inc.  

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

7, 2002 7, 2002 DECISION AND ORDER OF THE DEPARTMENT OF ENERGY Application for Exception Name of Petitioner: Ken Bettridge Distributing, Inc. Case Number: VEE-0083 Date of Filing: February 28, 2002 On February 28, 2002, Ken Bettridge Distributing, Inc. (Bettridge) of Cedar City, Utah, filed an Application for Exception with the Office of Hearings and Appeals (OHA) of the Department of Energy (DOE). In its application, Bettridge requests that it be temporarily relieved of the requirement to prepare and file the Energy Information Administration's (EIA) form entitled "Resellers'/Retailers' Monthly Petroleum Product Sales Report" (Form EIA-782B). As explained below, we have concluded that Bettridge shall be excused from filing Form EIA-782B for one year.

Note: This page contains sample records for the topic "determination distributed dynamic" 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

Air-Con International: Noncompliance Determination and Proposed Penalty  

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

Con International: Noncompliance Determination and Proposed Con International: Noncompliance Determination and Proposed Penalty (2010-SE-0301) Air-Con International: Noncompliance Determination and Proposed Penalty (2010-SE-0301) September 20, 2010 DOE issued a Notice of Noncompliance Determination to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con private label do not comport with the energy conservation standards. DOE also alleged in a Notice of Proposed Civil Penalty that Air-Con imported and distributed the noncompliant products in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This

462

Symmetric generalized binomial distributions  

SciTech Connect (OSTI)

In two recent articles, we have examined a generalization of the binomial distribution associated with a sequence of positive numbers, involving asymmetric expressions of probabilities that break the symmetry win-loss. We present in this article another generalization (always associated with a sequence of positive numbers) that preserves the symmetry win-loss. This approach is also based on generating functions and presents constraints of non-negativeness, similar to those encountered in our previous articles.

Bergeron, H. [Univ Paris-Sud, ISMO, UMR 8214, 91405 Orsay (France)] [Univ Paris-Sud, ISMO, UMR 8214, 91405 Orsay (France); Curado, E. M. F. [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil) [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil); Instituto Nacional de Cincia e Tecnologia - Sistemas Complexos, Rua Xavier Sigaud 150, 22290-180 - Rio de Janeiro, RJ (Brazil); Gazeau, J. P. [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil) [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil); APC, UMR 7164, Univ Paris Diderot, Sorbonne Paris Cit, 75205 Paris (France); Rodrigues, Ligia M. C. S., E-mail: herve.bergeron@u-psud.fr, E-mail: evaldo@cbpf.br, E-mail: gazeau@apc.univ-paris7.fr, E-mail: ligia@cbpf.br [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil)

2013-12-15T23:59:59.000Z

463

Mapping Biomass Distribution Potential  

E-Print Network [OSTI]

Mapping Biomass Distribution Potential Michael Schaetzel Undergraduate ? Environmental Studies ? University of Kansas L O C A T S I O N BIOMASS ENERGY POTENTIAL o According to DOE, Biomass has the potential to provide 14% of... the nations power o Currently 1% of national power supply o Carbon neutral? combustion of biomass is part of the natural carbon cycle o Improved crop residue management has potential to benefit environment, producers, and economy Biomass Btu...

Schaetzel, Michael

2010-11-18T23:59:59.000Z

464

Analytically solvable geometric network growth model with arbitrary degree distribution  

E-Print Network [OSTI]

We construct a class of network growth models capable of producing arbitrary degree distributions. The conditions necessary for generating the desired degree distribution can be derived analytically. In this model, a network is generated as a result of local interactions among agents residing on a metric space. Specifically, we study the case of random-walking agents who form bonds when they meet at designated locations we refer to as "rendezvous points." The spatial distribution of the rendezvous points determines key characteristics of the network such as the degree distribution. For any arbitrary (monotonic) degree distribution, we are able to analytically solve for the required rendezvous point distribution. Certain features of the model including high clustering coefficients suggest that it may be a suitable candidate for modeling biological and urban networks.

Dianati, Navid

2015-01-01T23:59:59.000Z

465

Interim Action Determination  

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

Interim Action Determination Interim Action Determination Processing of Plutonium Materials from the DOE Standard 3013 Surveillance Program in H-Canyon at the Savannah River Site The Department of Energy (DOE) is preparing the Surplus Plutonium Disposition Supplemental Environmental Impact Statement (SPD SEIS, DOE/EIS-0283-S2). DOE is evaluating alternatives for disposition of non-pit plutonium that is surplus to the national

466

3 - Mobile Robot Dynamics  

Science Journals Connector (OSTI)

Mobile robot dynamics is a challenging field on its own, especially due to the variety of the imposed constraints. Delicate stability and control problems that have very often to be faced are due to longitudinal or lateral slip, and to the features of the ground (roughness, etc.). This chapter has the following objectives: (i) to present the general dynamic modeling concepts and techniques of robots, (ii) to study the NewtonEuler and Lagrange dynamic models of differential-drive mobile robots, (iii) to study the dynamics of differential-drive mobile robots with longitudinal and lateral slip, (iv) to derive a dynamic model of car-like wheeled mobile robots, (v) to derive a dynamic model of three-wheel omnidirectional robots, and (vi) to derive a dynamic model of four-wheel mecanum omnidirectional robots.

Spyros G. Tzafestas

2014-01-01T23:59:59.000Z

467

AVESTAR® - Dynamic Modeling  

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

Dynamic Modeling Dynamic Modeling The AVESTAR team is pursuing research on the dynamic modeling and simulation of advanced energy systems ranging from power plants to power grids. Dynamic models provide a continuous view of energy systems in action by calculating their transient behavior over time. Plant-wide Models For power plants, dynamic models are used to analyze a wide variety of operating scenarios, including normal base load operation, startup, shutdown, feedstock switchovers, cycling, and load-following. Dynamic process and control models are also essential for analyzing plant responses to setpoint changes and disturbances, as well as malfunctions and abnormal situations. Other applications of plant-wide dynamic models include controllability and operational flexibility analyses, environmental studies, safety evaluations, and risk mitigation.

468

GASIFICATION FOR DISTRIBUTED GENERATION  

SciTech Connect (OSTI)

A recent emphasis in gasification technology development has been directed toward reduced-scale gasifier systems for distributed generation at remote sites. The domestic distributed power generation market over the next decade is expected to be 5-6 gigawatts per year. The global increase is expected at 20 gigawatts over the next decade. The economics of gasification for distributed power generation are significantly improved when fuel transport is minimized. Until recently, gasification technology has been synonymous with coal conversion. Presently, however, interest centers on providing clean-burning fuel to remote sites that are not necessarily near coal supplies but have sufficient alternative carbonaceous material to feed a small gasifier. Gasifiers up to 50 MW are of current interest, with emphasis on those of 5-MW generating capacity. Internal combustion engines offer a more robust system for utilizing the fuel gas, while fuel cells and microturbines offer higher electric conversion efficiencies. The initial focus of this multiyear effort was on internal combustion engines and microturbines as more realistic near-term options for distributed generation. In this project, we studied emerging gasification technologies that can provide gas from regionally available feedstock as fuel to power generators under 30 MW in a distributed generation setting. Larger-scale gasification, primarily coal-fed, has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries. Commercial-scale gasification activities are under way at 113 sites in 22 countries in North and South America, Europe, Asia, Africa, and Australia, according to the Gasification Technologies Council. Gasification studies were carried out on alfalfa, black liquor (a high-sodium waste from the pulp industry), cow manure, and willow on the laboratory scale and on alfalfa, black liquor, and willow on the bench scale. Initial parametric tests evaluated through reactivity and product composition were carried out on thermogravimetric analysis (TGA) equipment. These tests were evaluated and then followed by bench-scale studies at 1123 K using an integrated bench-scale fluidized-bed gasifier (IBG) which can be operated in the semicontinuous batch mode. Products from tests were solid (ash), liquid (tar), and gas. Tar was separated on an open chromatographic column. Analysis of the gas product was carried out using on-line Fourier transform infrared spectroscopy (FT-IR). For selected tests, gas was collected periodically and analyzed using a refinery gas analyzer GC (gas chromatograph). The solid product was not extensively analyzed. This report is a part of a search into emerging gasification technologies that can provide power under 30 MW in a distributed generation setting. Larger-scale gasification has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries, and it is probable that scaled-down applications for use in remote areas will become viable. The appendix to this report contains a list, description, and sources of currently available gasification technologies that could be or are being commercially applied for distributed generation. This list was gathered from current sources and provides information about the supplier, the relative size range, and the status of the technology.

Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

2000-05-01T23:59:59.000Z

469

Distributed Intelligent Agents for Decision Making at Local Distributed  

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

Distributed Intelligent Agents for Decision Making at Local Distributed Distributed Intelligent Agents for Decision Making at Local Distributed Energy Resource (DER) Levels Speaker(s): David Cohen Date: June 3, 2005 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Peng Xu Our goals are to develop and commercialize a system of adaptive, intelligent software components which run at distributed locations (DER-level) on the energy network to improve the reliability, efficiency, and security of the U.S. electrical distribution network. We are developing GridAgents, an enabling software technology framework and platform using a distributed multi-agent systems approach for advanced communications and control capabilities (large- scale automated demand response, distribution automation control, and Microgrid control applications). For more

470

Dynamics of evaporative colloidal patterning  

E-Print Network [OSTI]

Drying suspensions often leave behind complex patterns of particulates, as might be seen in the coffee stains on a table. Here we consider the dynamics of periodic band or uniform solid film formation on a vertical plate suspended partially in a drying colloidal solution. Direct observations allow us to visualize the dynamics of the band and film deposition, and the transition in between when the colloidal concentration is varied. A minimal theory of the liquid meniscus motion along the plate reveals the dynamics of the banding and its transition to the filming as a function of the ratio of deposition and evaporation rates. We also provide a complementary multiphase model of colloids dissolved in the liquid, which couples the inhomogeneous evaporation at the evolving meniscus to the fluid and particulate flows and the transition from a dilute suspension to a porous plug. This allows us to determine the concentration dependence of the bandwidth and the deposition rate. Together, our findings allow for the control of drying-induced patterning as a function of the colloidal concentration and evaporation rate.

C. Nadir Kaplan; Ning Wu; Shreyas Mandre; Joanna Aizenberg; L. Mahadevan

2014-12-04T23:59:59.000Z

471

Physical Oceanography Distributed Active Archive Center (PO.DAAC) |  

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

Physical Oceanography Distributed Active Archive Center (PO.DAAC) Physical Oceanography Distributed Active Archive Center (PO.DAAC) Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov » Communities » Ocean » Data Physical Oceanography Distributed Active Archive Center (PO.DAAC) Dataset Summary Description PO.DAAC is an element of the Earth Observing System Data Information System (EOSDIS). PO.DAAC's primary responsibility is to provide distribution and archive support for NASA's physical oceanography missions such as TOPEX/Poseidon and SeaWinds on QuikSCAT. However, PO.DAAC additionally collaborates with other institutes to acquire complementary data products and value-added services. Tags {Oceans,"ocean dynamics","Earth observing system",EOS,navigation,"information systems",NASA,JPL,"Jet Propulsion Laboratory"}

472

Determining age of whales  

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

Determining age of whales Determining age of whales Name: Bruce W Walkey Age: N/A Location: N/A Country: N/A Date: N/A Question: While browsing through the Internet, I came upon a question by two fifth grade students. Their question got me thinking and now I pose it to you. How can you determine the age of whales? Since they are mammals, can the methods that are used on humans be used on whales? What are some tests that can be done on bones or tissues to determine age? Looking forward to your reply. Replies: Although it is difficult to determine the age of whales (unless they are born in captivity and we know their birth date), several methods have been commonly used: 1) (if female) the examination of the ovaries 2) Examination of the ridges on baleen, which are not uniform in size and analogous to tree rings. The problem with this is that baleen wears away over time. 3) Studying layers of ossification in an ear bone is probably the most accurate method of aging, since internal bones don't wear away. The biggest problem with aging methods is that they usually require that you are dissecting the animal, and often, we would like a method of aging for live active animals. The best we can do here is to compare the size and markings of whales of known age to those found in the wild. Great question!

473

A microscopic view of accelerated dynamics in deformed polymer glasses  

E-Print Network [OSTI]

A molecular level analysis of segmental trajectories obtained from molecular dynamics simulations is used to obtain the full relaxation time spectrum in aging polymer glasses subject to three different deformation protocols. As in experiments, dynamics can be accelerated by several orders of magnitude, and a narrowing of the distribution of relaxation times during creep is directly observed. Additionally, the acceleration factor describing the transformation of the relaxation time distributions is computed and found to obey a universal dependence on the global strain, independent of age and deformation protocol.

Mya Warren; Joerg Rottler

2010-02-09T23:59:59.000Z

474

Efficient Distributed Quantum Computing  

E-Print Network [OSTI]

We provide algorithms for efficiently addressing quantum memory in parallel. These imply that the standard circuit model can be simulated with low overhead by the more realistic model of a distributed quantum computer. As a result, the circuit model can be used by algorithm designers without worrying whether the underlying architecture supports the connectivity of the circuit. In addition, we apply our results to existing memory intensive quantum algorithms. We present a parallel quantum search algorithm and improve the time-space trade-off for the Element Distinctness and Collision problems.

Robert Beals; Stephen Brierley; Oliver Gray; Aram Harrow; Samuel Kutin; Noah Linden; Dan Shepherd; Mark Stather

2012-07-10T23:59:59.000Z

475

Categorical Exclusion Determinations: California | Department of Energy  

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

February 17, 2012 February 17, 2012 CX-007812: Categorical Exclusion Determination Smart Wire Grid, Inc. - Distributed Power Flow Control Using Smart Wires for Energy Routing CX(s) Applied: A9, B1.7, B3.6 Date: 02/17/2012 Location(s): California, Missouri, North Carolina, Georgia, Tennessee Offices(s): Advanced Research Projects Agency-Energy February 13, 2012 CX-007885: Categorical Exclusion Determination Room Temperature Hydrogen Storage in Nano-confined liquids CX(s) Applied: A9, B3.6 Date: 02/13/2012 Location(s): California Offices(s): Golden Field Office February 9, 2012 CX-007822: Categorical Exclusion Determination Routine Activities at the Laboratory for Energy-Related Health Research (LEHR), California, Site CX(s) Applied: B1.3, B3.1 Date: 02/09/2012 Location(s): California

476

Categorical Exclusion Determinations: Texas | Department of Energy  

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

October 5, 2010 October 5, 2010 CX-004152: Categorical Exclusion Determination Texas-City-Midland CX(s) Applied: B2.5, B5.1 Date: 10/05/2010 Location(s): Midland, Texas Office(s): Energy Efficiency and Renewable Energy October 1, 2010 CX-004070: Categorical Exclusion Determination Distributed Thermoelectric Heating, Ventilation and Air Conditioning for Vehicle Applications CX(s) Applied: A9, A11, B3.6 Date: 10/01/2010 Location(s): Dallas, Texas Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory October 1, 2010 CX-004068: Categorical Exclusion Determination Ultra Deep Water Seabed Discharge of Produced Water and/or Solids CX(s) Applied: A9, A11 Date: 10/01/2010 Location(s): Sugar Land, Texas Office(s): Fossil Energy, National Energy Technology Laboratory

477

Categorical Exclusion Determinations: California | Department of Energy  

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

February 16, 2011 February 16, 2011 CX-005243: Categorical Exclusion Determination California-City-San Leandro CX(s) Applied: A1, A9, B1.32, B2.5, B5.1 Date: 02/16/2011 Location(s): San Leandro, California Office(s): Energy Efficiency and Renewable Energy February 16, 2011 CX-005203: Categorical Exclusion Determination Investigating the Performance of Residential Thermal Storage Refrigeration (TSR) CX(s) Applied: A9, B3.6 Date: 02/16/2011 Location(s): Davis, California Office(s): Energy Efficiency and Renewable Energy, Golden Field Office February 11, 2011 CX-005238: Categorical Exclusion Determination Wide Area Wireless Distribution Grid Sensor and Faulted Circuit Indicator System for Underground Assets CX(s) Applied: A1, A9, A11, B1.2, B1.7 Date: 02/11/2011 Location(s): San Diego, California

478

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

8, 2011 8, 2011 CX-006042: Categorical Exclusion Determination Conversion of Low-Rank Wyoming Coals into Gasoline by Direct Liquefaction CX(s) Applied: B3.6 Date: 06/08/2011 Location(s): Laramie, Wyoming Office(s): Fossil Energy, National Energy Technology Laboratory June 7, 2011 CX-006050: Categorical Exclusion Determination Midwest Region Alternative Fuels Project CX(s) Applied: B3.6, B5.1 Date: 06/07/2011 Location(s): Kansas City, Missouri Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory June 7, 2011 CX-006054: Categorical Exclusion Determination San Diego Gas & Electric Borrego Springs Microgrid Demo (Utility Integration of Distributed Energy Storage Systems) CX(s) Applied: A1, A9, B3.11, B4.4 Date: 06/07/2011 Location(s): Borrego Springs, California

479

Categorical Exclusion Determinations: Advanced Research Projects  

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

July 25, 2012 July 25, 2012 CX-008873: Categorical Exclusion Determination Oregon State University- Natural Gas Self-contained Home Filling Station CX(s) Applied: B3.6 Date: 07/25/2012 Location(s): Oregon, Colorado, Michigan Offices(s): Advanced Research Projects Agency-Energy April 17, 2012 CX-008671: Categorical Exclusion Determination Arizona State University - Cyanobacteria Designed for Solar-Powered Highly Efficient Production of Biofuels - Phase II CX(s) Applied: A9, B3.6 Date: 04/17/2012 Location(s): Arizona, Arizona, Arizona, Minnesota, North Carolina Offices(s): Advanced Research Projects Agency-Energy February 17, 2012 CX-007812: Categorical Exclusion Determination Smart Wire Grid, Inc. - Distributed Power Flow Control Using Smart Wires for Energy Routing CX(s) Applied: A9, B1.7, B3.6

480

Categorical Exclusion Determinations: Tennessee | Department of Energy  

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

March 5, 2012 March 5, 2012 CX-008177: Categorical Exclusion Determination Clinch River Environmental Studies Organization (CRESO) 2012 Education/Research Program Activities CX(s) Applied: B3.3 Date: 03/05/2012 Location(s): Tennessee Offices(s): Oak Ridge Office February 17, 2012 CX-007812: Categorical Exclusion Determination Smart Wire Grid, Inc. - Distributed Power Flow Control Using Smart Wires for Energy Routing CX(s) Applied: A9, B1.7, B3.6 Date: 02/17/2012 Location(s): California, Missouri, North Carolina, Georgia, Tennessee Offices(s): Advanced Research Projects Agency-Energy February 14, 2012 CX-008808: Categorical Exclusion Determination Lithium Isotope Separation & Enrichment Technologies CX(s) Applied: CX: none Date: 02/14/2012 Location(s): Tennessee Offices(s): Y-12 Site Office

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481

Circulating fluidized bed hydrodynamics experiments for the multiphase fluid dynamics research consortium (MFDRC).  

SciTech Connect (OSTI)

An experimental program was conducted to study the multiphase gas-solid flow in a pilot-scale circulating fluidized bed (CFB). This report describes the CFB experimental facility assembled for this program, the diagnostics developed and/or applied to make measurements in the riser section of the CFB, and the data acquired for several different flow conditions. Primary data acquired included pressures around the flow loop and solids loadings at selected locations in the riser. Tomographic techniques using gamma radiation and electrical capacitance were used to determine radial profiles of solids volume fraction in the riser, and axial profiles of the integrated solids volume fraction were produced. Computer Aided Radioactive Particle Tracking was used to measure solids velocities, fluxes, and residence time distributions. In addition, a series of computational fluid dynamics simulations was performed using the commercial code Arenaflow{trademark}.

Oelfke, John Barry; Torczynski, John Robert; O'Hern, Timothy John; Tortora, Paul Richard; Bhusarapu, Satish (; ); Trujillo, Steven Mathew

2006-08-01T23:59:59.000Z

482

Molecular dynamics (MD) calculation of the real zeta potential of neutral surfaces  

E-Print Network [OSTI]

Molecular dynamics (MD) simulations of the zeta potential are so poor that it has become common to term their predictions "apparent". Here we demonstrate how MD methods can predict zeta potentials accurate enough they can be termed "real". The critical new aspects of our method are: (1) integrating the net average charge in surface-parallel layers from the midpoint of the fluid layer (where the electrostatic potential is zero) to and then into two solid caps, (2) determining the position of slipping plane with separate Couette flow models, and (3) calculating the charge distribution and electrostatic potential under static conditions. The solids are charge neutral surfaces composed of atoms with zero charge or charge balanced monovalent or divalent ions. The zeta potentials calculated are within a few millivolts of measured values, and the measured values fall within the simulation error bars. The zeta potentials calculated with the Helmholtz and Smoluchowski equation following current practice are 10's of mi...

Liu, Hongyi

2013-01-01T23:59:59.000Z

483

Distributed Energy Resources for Carbon Emissions Mitigation  

E-Print Network [OSTI]

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

Firestone, Ryan; Marnay, Chris

2008-01-01T23:59:59.000Z

484

ORNL DAAC for Biogeochemical Dynamics  

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

Home Home Welcome about us image About Us Provides detailed information about the ORNL DAAC. projects image About Data Lists the data products available from the ORNL DAAC. access image Get Data Guides you through the steps needed to acquire the data. tools image Data Tools Some tools to help you work with the data. uso image Help Need assistance? Our staff is happy to help. ORNL DAAC The Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) for biogeochemical dynamics is one of the National Aeronautics and Space Administration (NASA) Earth Observing System Data and Information System (EOSDIS) data centers managed by the Earth Science Data and Information System (ESDIS) Project. The ORNL DAAC archives data produced by NASA's Terrestrial Ecology Program. The DAAC provides data and information

485

Dynamics of assembly production flow  

E-Print Network [OSTI]

Despite recent developments in management theory, maintaining a manufacturing schedule remains difficult because of production delays and fluctuations in demand and supply of materials. The response of manufacturing systems to such disruptions to dynamic behavior has been rarely studied. To capture these responses, we investigate a process that models the assembly of parts into end products. The complete assembly process is represented by a directed tree, where the smallest parts are injected at leaves and the end products are removed at the root. A discrete assembly process, represented by a node on the network, integrates parts, which are then sent to the next downstream node as a single part. The model exhibits some intriguing phenomena, including overstock cascade, phase transition in terms of demand and supply fluctuations, nonmonotonic distribution of stockout in the network, and the formation of a stockout path and stockout chains. Surprisingly, these rich phenomena result from only the nature of distr...

Ezaki, Takahiro; Nishinari, Katsuhiro

2015-01-01T23:59:59.000Z

486

Dynamical Friction on extended perturbers  

E-Print Network [OSTI]

Following a wave-mechanical treatment we calculate the drag force exerted by an infinite homogeneous background of stars on a perturber as this makes its way through the system. We recover Chandrasekhar's classical dynamical friction (DF) law with a modified Coulomb logarithm. We take into account a range of models that encompasses all plausible density distributions for satellite galaxies by considering the DF exerted on a Plummer sphere and a perturber having a Hernquist profile. It is shown that the shape of the perturber affects only the exact form of the Coulomb logarithm. The latter converges on small scales, because encounters of the test and field stars with impact parameters less than the size of the massive perturber become inefficient. We confirm this way earlier results based on the impulse approximation of small angle scatterings.

O. Esquivel; B. Fuchs

2008-04-01T23:59:59.000Z

487

Technical Potential for Local Distributed  

E-Print Network [OSTI]

the impact of high penetrations of solar PV on wholesale power markets (energy and capacity Technical Potential for Local Distributed Photovoltaics in California Preliminary.391.5100 www.ethree.com Technical Potential for Local Distributed Photovoltaics in California Preliminary

488

Arnold Schwarzenegger DISTRIBUTED GENERATION DRIVETRAIN  

E-Print Network [OSTI]

Arnold Schwarzenegger Governor DISTRIBUTED GENERATION DRIVETRAIN FOR WINDPOWER APPLICATION Prepared in this report. #12;ENERGY INNOVATIONS SMALL GRANT (EISG) PROGRAM INDEPENDENT ASSESSMENT REPORT (IAR) DISTRIBUTED GENERATION DRIVETRAIN FOR WINDPOWER APPLICATION EISG AWARDEE Dehlsen Associates, LLC 7985 Armas Canyon Road

489

Hydrogen storage and distribution systems  

Science Journals Connector (OSTI)

Hydrogen storage and transportation or distribution is closely linked together. Hydrogen can be distributed continuously in pipelines or ... or airplanes. All batch transportation requires a storage system but al...

Andreas Zttel

2007-03-01T23:59:59.000Z

490

Chemical Structure and Dynamics  

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

2154-3 2154-3 UC-400 Annual Report 2000 Chemical Structure and Dynamics Steven D. Colson, Associate Director Robin S. McDowell, Program Manager and the Staff of the Chemical Structure and Dynamics Program April 2001 Prepared for the U.S. Department of Energy under Contract DE-AC06-76RL01830 Chemical Structure and Dynamics 2000 Annual Report Contents Chemical Structure and Dynamics 2000 Annual Report Chemical Structure and Dynamics 2000 Annual Report 1. Introduction Chemical Structure and Dynamics Program......................................................... 1-3 2. Reaction Mechanisms at Liquid Interfaces Structure and Reactivity of Ice Surfaces and Interfaces G. A. Kimmel, Z. Dohnálek, K. P. Stevenson, R. S. Smith,

491

On optimal multistage electric power distribution networks expansion planning  

Science Journals Connector (OSTI)

Abstract The optimal expansion planning of electric power distribution network to meet system load growth and overcome to pseudo dynamic behavior of network parameters considering a large number of constraints is a hard satisfactory multiobjective optimization problem. This paper implements new developed Imperialist Competitive Algorithm (ICA) for the optimal expansion planning of distribution network. The topology of medium voltage (MV) distribution network as backbone of electric power distribution systems is designed by optimal sizing, siting and timing of medium voltage network components such as HV substation and MV feeders routes. A multistage expansion planning is proposed to consider dynamic behavior of the system parameters asset management and geographical constraints. In order to reach the global solution an efficient coding is developed for ICA parameters. The Greedy algorithm is used to solve the minimum spanning tree problem to construct a radial configuration of the mesh network. At each stage of the problem the results are fully illustrated either by figures or by tables. A sensitivity analysis is used to show the robustness of the results with respect to ICA parameters variation. The obtained results are compared with GA as well known heuristic optimization tool. The efficiency and capability of the methodology has been tested on an under developed relatively large-scale distribution networ