Sample records for generator-to-load distribution factor

  1. CSEM WP 104 Variation of Distribution Factors with Loading

    E-Print Network [OSTI]

    California at Berkeley. University of

    on the topology of the electric power system, the behavior of controllable transmission system elements distribution factors depend on the operating point and topology of an electric power system. However right schemes for transmis- sion rights [4, 5], capacity to flow power on a line or a group of lines

  2. Factors influencing methane distribution in Texas ground water

    SciTech Connect (OSTI)

    Zhang, C.; Grossman, E.L.; Ammerman, J.W. [Texas A and M Univ., College Station, TX (United States)

    1998-01-01T23:59:59.000Z

    To determine the factors that influence the distribution of methane in Texas ground water, water samples were collected from 40 wells in east-central and central Texas aquifers. Among the chemical parameters examined, sulfate is most important in controlling methane distribution. Methane occurs in high concentration in east-central Texas only where sulfate concentration is low, supporting the hypothesis that abundant microbial methane production does not begin until sulfate is depleted. Because water samples from central Texas are high in either oxygen or sulfate, methane concentrations are low in these waters. A positive correlation between methane and sulfate in these waters indicates a different, perhaps thermogenic, origin for the trace methane. The {sup 13}C/{sup 12}C ratios of dissolved methane ranged from {minus}80{per_thousand} to {minus}21{per_thousand} in east-central Texas and {minus}41.2{per_thousand} to {minus}8.5{per_thousand} in central Texas. Low values of < {minus}50{per_thousand} in the east-central Texas ground water indicate a microbial origin for methane and are consistent with the observed sulfate-methane relationship; high {sup 13}C/{sup 12}C ratios of > {minus}31{per_thousand} likely result from bacterial methane oxidation. Similarly, methane with high {sup 13}C/{sup 12}C ratios in central Texas may reflect partial oxidation of the methane pool. Overall, water samples from both regions show a positive correlation between sulfate concentration and the {sup 13}C/{sup 12}C ratio of methane, suggesting that methane oxidation may be associated with sulfate reduction in Texas ground water.

  3. DSE Perspective on QCD Modeling, Distribution Amplitudes, and Form Factors

    E-Print Network [OSTI]

    Peter C Tandy

    2014-07-02T23:59:59.000Z

    We describe results for the pion distribution amplitude (PDA) at the non-perturbative scale $\\mu=~$2GeV by projecting the Poincar\\'e-covariant Bethe-Salpeter wave-function onto the light-front and use it to investigate the ultraviolet behavior of the electromagnetic form factor, $F_\\pi(Q^2)$, on the entire domain of spacelike $Q^2$. The significant dilation of this PDA compared to the known asymptotic PDA is a signature of dynamical chiral symmetry breaking (DCSB) on the light front. We investigate the transition region of $Q^2$ where non-perturbative behavior of constituent-like quarks gives way to the partonic-like behavior of quantum chromodynamics (QCD). The non-perturbative approach is based on the Dyson-Schwinger equation (DSE) framework for continuum investigations in QCD. The leading-order, leading-twist perturbative QCD result for $Q^2 F_\\pi(Q^2)$ underestimates the new DSE computation by just 15\\% on $Q^2\\gtrsim 8\\,$GeV$^2$, in stark contrast with the result obtained using the asymptotic PDA.

  4. Pion light-front wave function, parton distribution and the electromagnetic form factor

    E-Print Network [OSTI]

    Thomas Gutsche; Valery E. Lyubovitskij; Ivan Schmidt; Alfredo Vega

    2014-10-23T23:59:59.000Z

    We derive a light-front wave function of the pion, which reproduces its valence parton distribution and a electromagnetic form factor consistent with data.

  5. Variation of distribution factors with loading Ross Baldick

    E-Print Network [OSTI]

    Baldick, Ross

    of Texas at Austin. transmission rights [5], [6], capacity to flow power on a line or a group of lines factors depend on the op- erating point and topology of an electric power system. However, it is known) is the relative change in power flow on a particular line due to a change in injection and corresponding

  6. Soft Factor Subtraction and Transverse Momentum Dependent Parton Distributions on Lattice

    E-Print Network [OSTI]

    Xiangdong Ji; Peng Sun; Xiaonu Xiong; Feng Yuan

    2014-05-29T23:59:59.000Z

    We study the transverse momentum dependent (TMD) parton distributions in the newly proposed quasi-parton distribution function framework in Euclidean space. A soft factor subtraction is found to be essential to make the TMDs calculable on lattice. We show that the quasi-TMDs with the associated soft factor subtraction can be applied in hard QCD scattering processes such as Drell-Yan lepton pair production in hadronic collisions. This allows future lattice calculations to provide information on the non-perturbative inputs and energy evolutions for the TMDs. Extension to the generalized parton distributions and quantum phase space Wigner distributions will lead to a complete nucleon tomography on lattice.

  7. A reactive contingency analysis algorithm using MW and MVAR distribution factors

    SciTech Connect (OSTI)

    Taylor, D.G.; Maahs, L.J. (Pennsylvania-New Jersey-Maryland Interconnection, Norristown, PA (US))

    1991-02-01T23:59:59.000Z

    This paper describes an algorithm that can be used in analyzing reactive power flow contingencies. This approach uses MW distribution factors (DFAX) in conjunction with newly developed VAR distribution factors (RDFAX) to solve for the post-contingency bus voltage magnitude changes of an interconnecter EHV system. A prototype version of the algorithm described in this paper is presently being tested at the Pennsylvania-New Jersey-Maryland (PJM) interconnection office.

  8. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 3, AUGUST 2009 1633 Direct Calculation of Line Outage Distribution Factors

    E-Print Network [OSTI]

    Fu, Yong

    IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 3, AUGUST 2009 1633 Direct Calculation of Line significantly the security analyses of power systems. This letter provides two direct proofs for expressing distribution factor, power transfer distribution factor, shift factor. I. INTRODUCTION LINE outage distribution

  9. Lyapunov-Based Distributed Control of the Safety Factor Profile in a Tokamak Plasma

    E-Print Network [OSTI]

    Boyer, Edmond

    Lyapunov-Based Distributed Control of the Safety Factor Profile in a Tokamak Plasma Federico safety-factor profile in a tokamak plasma. Using relevant physical models and simplifying assumptions within a tokamak plasma is a key issue to achieve (and maintain) in a safe manner high

  10. Key factors affecting voltage oscillations of distribution networks with distributed generation and induction motor loads

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    of distributed energy sources such as, combined heat and power (CHP), wind, solar, and fuel cells, are expected and IT, The University of New South Wales, Canberra, ACT 2600, Australia b Future Grid Research Centre, The University of Melbourne, Parkville, VIC 3010, Australia c Griffith School of Engineering, Griffith University

  11. A Sparse Representation Approach to Online Estimation of Power System Distribution Factors

    E-Print Network [OSTI]

    Liberzon, Daniel

    , constructed from the transmission network, line parameters, and historical and forecasted power generation.g., a transmission line or generator), a condition known as N-1 security [2]. Using an up-to- date system model1 A Sparse Representation Approach to Online Estimation of Power System Distribution Factors Yu

  12. Abstract--Distribution factors play a key role in many system security analysis and market applications. The injection shift

    E-Print Network [OSTI]

    for and the computationally efficient evaluation of LODFs under multiple- line outages. Index Terms--power transfer distribution factors, line outage distribution factors, multiple-line outages, system security. I. INTRODUCTION. Given the usefulness of LODFs in the study of security with many outaged lines, such as in blackouts

  13. Testing collinear factorization and nuclear parton distributions with pA collisions at the LHC

    E-Print Network [OSTI]

    Paloma Quiroga-Arias; Jose Guilherme Milhano; Urs Achim Wiedemann

    2010-10-07T23:59:59.000Z

    Global perturbative QCD analyses, based on large data sets from electron-proton and hadron collider experiments, provide tight constraints on the parton distribution function (PDF) in the proton. The extension of these analyses to nuclear parton distributions (nPDF) has attracted much interest in recent years. nPDFs are needed as benchmarks for the characterization of hot QCD matter in nucleus-nucleus collisions, and attract further interest since they may show novel signatures of non- linear density-dependent QCD evolution. However, it is not known from first principles whether the factorization of long-range phenomena into process-independent parton distribution, which underlies global PDF extractions for the proton, extends to nuclear effects. As a consequence, assessing the reliability of nPDFs for benchmark calculations goes beyond testing the numerical accuracy of their extraction and requires phenomenological tests of the factorization assumption. Here we argue that a proton-nucleus collision program at the LHC would provide a set of measurements allowing for unprecedented tests of the factorization assumption underlying global nPDF fits.

  14. Factors affecting the distribution, food habits, and lead toxicosis of redhead ducks in the Laguna Madre, Texas

    E-Print Network [OSTI]

    Marsh, Steven Lyle

    1979-01-01T23:59:59.000Z

    FACTORS AFFECTING THE, DISTRIBUTION, FOOD HASITS& AND LEAD TOXICOSIS OF REDHEAD DUCKS IN THE LAGUNA MADRE, TEXAS A Thesis by STEVEN LYLE MARSH Submitted to the Graduate College of Texas Ait:M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE December 1979 Major Subject: Wildlife and Fisheries Sciences FACTORS AFFEC~G THE DISTRIBUTION, FOOD HABITS, AND LEAD TOXICOSIS OF REDHEAD DUCKS IN THE LAGUNA MADRE, TEXAS A Thesis by STEVEN LYLE MARSH...

  15. Virtuality Distributions in application to gamma gamma* to pi^0 Transition Form Factor at Handbag Level

    SciTech Connect (OSTI)

    Radyushkin, Anatoly V. [ODU, JLAB

    2014-07-01T23:59:59.000Z

    We outline basics of a new approach to transverse momentum dependence in hard processes. As an illustration, we consider hard exclusive transition process gamma*gamma -> to pi^0 at the handbag level. Our starting point is coordinate representation for matrix elements of operators (in the simplest case, bilocal O(0,z)) describing a hadron with momentum p. Treated as functions of (pz) and z^2, they are parametrized through a virtuality distribution amplitude (VDA) Phi (x, sigma), with x being Fourier-conjugate to (pz) and sigma Laplace-conjugate to z^2. For intervals with z^+=0, we introduce transverse momentum distribution amplitude (TMDA) Psi (x, k_\\perp), and write it in terms of VDA Phi (x, \\sigma). The results of covariant calculations, written in terms of Phi (x sigma) are converted into expressions involving Psi (x, k_\\perp. Starting with scalar toy models, we extend the analysis onto the case of spin-1/2 quarks and QCD. We propose simple models for soft VDAs/TMDAs, and use them for comparison of handbag results with experimental (BaBar and BELLE) data on the pion transition form factor. We also discuss how one can generate high-k_\\perp tails from primordial soft distributions.

  16. Factors that Contribute to Distribution Patterns of Trace Elements in Maricopa County Xiaoding Zhuo, Panjai Prapaipong and Everett Shock

    E-Print Network [OSTI]

    Hall, Sharon J.

    Factors that Contribute to Distribution Patterns of Trace Elements in Maricopa County Xiaoding Zhuo of trace element distributions across Maricopa County from trace elemental analysis of 200 surface soil local Toxic Release Inventory (TRI) air emission obtained from the EPA website (b), and comparison

  17. Temperature-averaged and total free-free Gaunt factors for $\\kappa$ and Maxwellian distributions of electrons

    E-Print Network [OSTI]

    de Avillez, Miguel A

    2015-01-01T23:59:59.000Z

    Aims. Optically thin plasmas may deviate from thermal equilibrium and thus, electrons (and ions) are no longer described by the Maxwellian distribution. Instead they can be described by $\\kappa$-distributions. The free-free spectrum and radiative losses depend on the temperature-averaged (over the electrons distribution) and total Gaunt factors, respectively. Thus, there is a need to calculate and make available these factors to be used by any software that deals with plasma emission. Methods. We recalculated the free-free Gaunt factor for a wide range of energies and frequencies using hypergeometric functions of complex arguments and the Clenshaw recurrence formula technique combined with approximations whenever the difference between the initial and final electron energies is smaller than $10^{-10}$ in units of $z^2Ry$. We used double and quadruple precisions. The temperature- averaged and total Gaunt factors calculations make use of the Gauss-Laguerre integration with 128 nodes. Results. The temperature-av...

  18. Distribution of {Omega}{sub k} from the scale-factor cutoff measure

    SciTech Connect (OSTI)

    De Simone, Andrea [Center for Theoretical Physics, Laboratory for Nuclear Science, and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Salem, Michael P. [Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)

    2010-04-15T23:59:59.000Z

    Our Universe may be contained in one among a diverging number of bubbles that nucleate within an eternally inflating multiverse. A promising measure to regulate the diverging spacetime volume of such a multiverse is the scale-factor cutoff, one feature of which is bubbles are not rewarded for having a longer duration of slow-roll inflation. Thus, depending on the landscape distribution of the number of e-folds of inflation among bubbles like ours, we might hope to measure spatial curvature. We study a recently proposed cartoon model of inflation in the landscape and find a reasonable chance (about 10%) that the curvature in our Universe is well above the value expected from cosmic variance. Anthropic selection does not strongly select for curvature as small as is observed (relative somewhat larger values), meaning the observational bound on curvature can be used to rule out landscape models that typically give too little inflation.

  19. Environmental granularity, rivers and climate history as shaping factors for species' distribution and diversity patterns

    E-Print Network [OSTI]

    Nakazawa Ueji, Yoshinori Jorge

    2009-08-31T23:59:59.000Z

    Species distributions are composed by those places in which the environmental conditions are suitable for the species to survive and maintain populations; where the interactions with other species are adequate; that have ...

  20. Factors influencing Kemp's ridley sea turtle (Lepidochelys kempii) distribution in nearshore waters and implications for management

    E-Print Network [OSTI]

    Metz, Tasha Lynn

    2004-11-15T23:59:59.000Z

    years of entanglement netting data to characterize long-term abundance and distribution of Kemp's ridley sea turtles at index habitats in this region. Netting surveys were conducted during April-October 1993-2002, primarily at Sabine Pass, Texas...

  1. Weather Factors and Performance of Network Utilities: A Methodology and Application to Electricity Distribution

    E-Print Network [OSTI]

    Jamasb, Tooraj; Orea, Luis; Pollitt, Michael G.

    Incentive regulation and efficiency analysis of network utilities often need to take the effect of important external factors, such as the weather conditions, into account. This paper presents a method for estimating the effect of weather conditions...

  2. Environmental factors affecting planktonic foraminifera abundance and distribution in the Northeast Gulf of Mexico

    E-Print Network [OSTI]

    Ravula, Sharath Reddy

    2005-08-29T23:59:59.000Z

    shift in the species abundances and depths occurred between eddies. Species occurred where physical factors were compatible with conditions and feeding opportunities they were adapted to. Three species pink and white Globigerinoides ruber...

  3. Updated greenhouse gas and criteria air pollutant emission factors and their probability distribution functions for electricity generating units

    SciTech Connect (OSTI)

    Cai, H.; Wang, M.; Elgowainy, A.; Han, J. (Energy Systems)

    2012-07-06T23:59:59.000Z

    Greenhouse gas (CO{sub 2}, CH{sub 4} and N{sub 2}O, hereinafter GHG) and criteria air pollutant (CO, NO{sub x}, VOC, PM{sub 10}, PM{sub 2.5} and SO{sub x}, hereinafter CAP) emission factors for various types of power plants burning various fuels with different technologies are important upstream parameters for estimating life-cycle emissions associated with alternative vehicle/fuel systems in the transportation sector, especially electric vehicles. The emission factors are typically expressed in grams of GHG or CAP per kWh of electricity generated by a specific power generation technology. This document describes our approach for updating and expanding GHG and CAP emission factors in the GREET (Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation) model developed at Argonne National Laboratory (see Wang 1999 and the GREET website at http://greet.es.anl.gov/main) for various power generation technologies. These GHG and CAP emissions are used to estimate the impact of electricity use by stationary and transportation applications on their fuel-cycle emissions. The electricity generation mixes and the fuel shares attributable to various combustion technologies at the national, regional and state levels are also updated in this document. The energy conversion efficiencies of electric generating units (EGUs) by fuel type and combustion technology are calculated on the basis of the lower heating values of each fuel, to be consistent with the basis used in GREET for transportation fuels. On the basis of the updated GHG and CAP emission factors and energy efficiencies of EGUs, the probability distribution functions (PDFs), which are functions that describe the relative likelihood for the emission factors and energy efficiencies as random variables to take on a given value by the integral of their own probability distributions, are updated using best-fit statistical curves to characterize the uncertainties associated with GHG and CAP emissions in life-cycle modeling with GREET.

  4. Factors affecting distribution patterns of chlorpyrifos and permethrin applied as termiticides to soil

    E-Print Network [OSTI]

    Whiting, Philip Howard

    1994-01-01T23:59:59.000Z

    Soil models in 190-liter containers were used to evaluate the effect of soil type (sandy, silty, and clay loams), soil moisture (25%, 50%, or 100% of field capacity), and rainfall (2.5, 5.0, or 15.0 cm) on the distribution patterns of termiticides...

  5. Power factor enhancement by inhomogeneous distribution of dopants in two-phase nanocrystalline systems

    E-Print Network [OSTI]

    that allows for high thermoelectric power factors in two-phase materials that are heavily doped been established as the most promising approach in improving thermoelectric efficiency. The thermoelectric performance of a material is quantified by the dimensionless figure of merit 2 /ZT S T , where

  6. Efficiency Effects of Quality of Service and Environmental Factors: Experience from Norwegian Electricity Distribution

    E-Print Network [OSTI]

    Growitsch, Christian; Jamasb, Tooraj; Wetzel, Heike

    . Initially, the focus of the early electricity sector reforms was mainly on implementing competition in the wholesale generation and retail supply activities. Meanwhile incentive regulation of the natural monopoly transmission and distribution networks may... ). However, it soon became evident that there is a potential conflict in the use of incentive regulation and provision of quality of service. Both theoretical arguments presented (e.g. Spence, 1975) and empirical findings (e.g. Ter- Martirosyan, 2003) have...

  7. Hamilton study: distribution of factors confounding the relationship between air quality and respiratory health

    SciTech Connect (OSTI)

    Pengelly, L.D.; Kerigan, A.T.; Goldsmith, C.H.; Inman, E.M.

    1984-10-01T23:59:59.000Z

    Hamilton, Ontario is an industrial city with a population of 300,000 which is situated at the western end of Lake Ontario. Canada's two largest iron and steel mills are located here; the city historically has had relatively poor air quality, which has improved markedly in the last 25 years. Concern about the health effects of current air quality recently led us to carry out an epidemiological study of the effects of air pollution on the respiratory health of over 3500 school children. Respiratory health was measured by pulmonary function testing of each child, and by an assessment of each child's respiratory symptoms via a questionnaire administered to the parents. Previous studies had shown that other environmental factors (e.g. parental smoking, parental cough, socioeconomic level, housing, and gas cooking) might also affect respiratory health, and thus confound any potential relationships between health and air pollution. The questionnaire also collected information on many of these confounding factors. For the purposes of initial analysis, the city was divided into five areas in which differences in air quality were expected. In general, factors which have been associated with poor respiratory health were observed to be more prevalent in areas of poorer air quality.

  8. An examination of factors influencing the spatial distribution of foraging bats in pine stands in the southeastern United States.

    SciTech Connect (OSTI)

    Menzel, Michael, A., Jr.

    2003-01-01T23:59:59.000Z

    Menzel, M.A. 2003. An examination of factors influencing the spatial distribution of foraging bats in pine stands in the Southeastern United States. Ph.D Dissertation. Davis College of Agriculture, Forestry and Consumer Sciences at West Virginia University, Morgantown, West Virginia. 336 pp. The general objective of this dissertation was to determine the effect of changes in forest structure on bat activity patterns in southern pine stands. Four sub studies are included in the dissertation: (1) An examination of the homerange size, habitat use and diet of four reproductively active male Rafinesque's big eared bats (Corynorhimus rafinesquii); (2) An examination of the diet of 5 reproductively active male Rafinesque's big eared bats; (3) A comparison of bat activity levels in the Coastal Plain of South Carolina among 5 vegetational community types: forested riparian areas, clearcuts, young pine plantations, mature plantations, and pine savannahs; (4) A summarization of information concerning the natural history of all bat species common in the SPR.

  9. Herd-level Risk Factors Associated with Antimicrobial Susceptibility Patterns and Distributions in Fecal Bacteria of Porcine Origin.

    E-Print Network [OSTI]

    Rollo, Susan Noble

    2012-10-19T23:59:59.000Z

    , Virginia Fajt H. Morgan Scott J.C. Huber Melissa Libal Head of Department, Evelyn Tiffany-Castiglioni August 2011 Major Subject: Biomedical Sciences iii ABSTRACT Herd-level Risk Factors Associated with Antimicrobial Susceptibility...

  10. $B\\to ?$ transition form factors within the QCD light-cone sum rules and the $?$-meson leading-twist distribution amplitude

    E-Print Network [OSTI]

    Hai-Bing Fu; Xing-Gang Wu; Hua-Yong Han; Yang Ma

    2015-01-29T23:59:59.000Z

    The QCD light-cone sum rules (LCSR) provides an effective way for dealing with the heavy-to-light transition form factors (TFFs), whose non-perturbative dynamics are parameterized into the light-meson's light-cone distribution amplitudes (LCDAs) with various twist structures. By taking the chiral correlator as the starting point, we calculate the LCSRs for the $B\\to\\rho$ TFFs up to twist-4 accuracy. As for the TFFs at the large recoil region, we observe that the twist-2 transverse DA $\\phi_{2;\\rho}^\\bot$ provides the dominant contribution, while the contributions from the remaining twist-3 and twist-4 terms are $\\delta^2$-suppressed. Thus, our present improved LCSRs provides a good platform for testing the $\\phi_{2;\\rho}^\\bot$ behavior. For the purpose, we suggest a convenient WH-model for the $\\rho$-meson leading-twist wavefunction, in which the parameter $B_{2;\\rho}^\\bot\\sim a^\\bot_2$ dominantly controls its longitudinal distribution. Typically, its DA $\\phi_{2;\\rho}^\\bot$ is CZ-like as $B_{2;\\rho}^\\bot\\simeq-0.20$, which changes to be asymptotic-like as $B_{2;\\rho}^\\bot\\simeq0.00$. By varying $B_{2;\\rho}^\\bot\\in[-0.20,0.20]$, we present a detailed comparison of the LCSR estimation for the $B\\to\\rho$ TFFs with those of pQCD and Lattice QCD predictions. Furthermore, by using the extrapolated TFFs, we estimate the CKM-matrix element $|V_{\\rm ub}|$ with the help of two $B\\to\\rho$ semi-leptonic decays. The predicted value for $|V_{\\rm ub}|$ increases with the increment of $B_{2;\\rho}^\\bot$, i.e. we have $\\Vub=(2.91\\pm0.19)\\times 10^{-3}$ for $B_{2;\\rho}^\\bot=-0.20$ and $\\Vub=(3.11\\pm0.19)\\times 10^{-3}$ for $B_{2;\\rho}^\\bot=0.00$. If using the BABAR prediction as a criteria, we observe that $B^{\\perp}_{2;\\rho}\\in[-0.2,0.10]$, which indicates that the $\\rho$-meson DA $\\phi_{2;\\rho}^\\bot$ prefers a single-peak behavior rather than a double-humped behavior.

  11. Planck Distribution in Noncommutative Space

    E-Print Network [OSTI]

    C. Yuce

    2005-06-13T23:59:59.000Z

    In this study, we derive the Planck distribution function in noncommutative space. It is found that it is modified by a small factor. It is shown that it is reduced to the usual Planck distribution function in the commutative limit .

  12. Distribution of polychlorinated biphenyls and organochlorine pesticides in human breast milk from various locations in Tunisia: Levels of contamination, influencing factors, and infant risk assessment

    SciTech Connect (OSTI)

    Ennaceur, S. [Laboratory of Environmental Analytical Chemistry (05/UR/12-03), Faculty of Sciences, Bizerte, 7021 Zarzouna (Tunisia)], E-mail: ennaceurs@yahoo.fr; Gandoura, N. [Service of Pediatrics, Regional Hospital of Bizerte, Bizerte (Tunisia); Driss, M.R. [Laboratory of Environmental Analytical Chemistry (05/UR/12-03), Faculty of Sciences, Bizerte, 7021 Zarzouna (Tunisia)

    2008-09-15T23:59:59.000Z

    The concentrations of dichlorodiphenytrichloroethane and its metabolites (DDTs), hexachlorobenzene (HCB), hexachlorocyclohexane isomers (HCHs), dieldrin, and 20 polychlorinated biphenyls (PCBs) were determined in 237 human breast milk samples collected from 12 locations in Tunisia. Gas chromatography with electron capture detector (GC-ECD) was used to identify and quantify residue levels on a lipid basis of organochlorine compounds (OCs). The predominant OCs in human breast milk were PCBs, p,p'-DDE, p,p'-DDT, HCHs, and HCB. Concentrations of DDTs in human breast milk from rural areas were significantly higher than those from urban locations (p<0.05). With regard to PCBs, we observed the predominance of mid-chlorinated congeners due to the presence of PCBs with high K{sub ow} such as PCB 153, 138, and 180. Positive correlations were found between concentrations of OCs in human breast milk and age of mothers and number of parities, suggesting the influence of such factors on OC burdens in lactating mothers. The comparison of daily intakes of PCBs, DDTs, HCHs, and HCB to infants through human breast milk with guidelines proposed by WHO and Health Canada shows that some individuals accumulated OCs in breast milk close to or higher than these guidelines.

  13. Electromagetic proton form factors

    E-Print Network [OSTI]

    M Y Hussein

    2006-10-31T23:59:59.000Z

    The electromagnetic form factors are crucial to our understanding of the proton internal structure, and thus provide a strong constraint of the distributions of the charge and magnetization current within the proton. We adopted the quark-parton model for calculating and understanding the charge structure of the proton interms of the electromagnetic form factors. A remarkable agreement with the available experimental evidence is found.

  14. Factors affecting wild turkey distribution and numbers

    E-Print Network [OSTI]

    Van Norman, Timothy Jon

    1989-01-01T23:59:59.000Z

    0. 0 0 0. 1 2 Ericameria 0. 0 0 0. 1 I I. I 0. 0 0 I. I 0. 1 1 0. 0 0 0. 0 0 0. 0 0 Manystem ratany 0. 0 0 0. 0 0 0. 1 2 0. 3 3 0. 0 0 0. 0 0 0. 0 0 0. 0 0 0. 0 0 Lantana Ceniza Guayacan Honey mesquite Littleleaf sumac 0. 0 0 0. 0 0 t. I 0. 0...

  15. affecting critical factors: Topics by E-print Network

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

    social responsibility implementation: an emphasis on values 5 Factors affecting wild turkey distribution and numbers Texas A&M University - TxSpace Summary: FACTORS AFFECTING...

  16. Uniform Distribution

    E-Print Network [OSTI]

    randomly and equally likely a point in that interval), the uniform distribution ... Roughly speaking, this means that from any distribution we can create the uniform.

  17. affects lysosomal distribution: Topics by E-print Network

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

    Key factors affecting voltage oscillations of distribution networks with distributed generation and induction motor loads Engineering Websites Summary: and induction motor loads...

  18. affect synaptic distribution: Topics by E-print Network

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

    pulse arrival at low rates have Richardson, Magnus 3 Factors affecting wild turkey distribution and numbers Texas A&M University - TxSpace Summary: FACTORS AFFECTING...

  19. Bayes Nets Representation: joint distribution and conditional

    E-Print Network [OSTI]

    Mitchell, Tom

    Bayes Nets Representation: joint distribution and conditional independence Yi Zhang 10-701, Machine joint distribution of BNs Infer C. I. from factored joint distributions D-separation (motivation) 2 structure All about the joint distribution of variables ! Conditional independence assumptions are useful

  20. ITP Industrial Distributed Energy: Distributed Energy Program...

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

    ITP Industrial Distributed Energy: Distributed Energy Program Project Profile: Verizon Central Office Building ITP Industrial Distributed Energy: Distributed Energy Program Project...

  1. Distributed DBMS Introduction

    E-Print Network [OSTI]

    Chen, Yangjun

    Distributed DBMS Outline Introduction What is a distributed DBMS Problems Current state-of-affairs Background Distributed DBMS Architecture Distributed Database Design Semantic Data Control Distributed Query Processing Distributed Transaction Management Parallel Database Systems Distributed Object DBMS

  2. Normal Distribution

    E-Print Network [OSTI]

    User

    NORMAL DlSTRlBUTION TABLE. Entries represent the area under the standardized normal distribution from -w to z, Pr(Z

  3. 5, 1012510154, 2005 Size distributions of

    E-Print Network [OSTI]

    Boyer, Edmond

    ·veh). The separation of the emission factor into passenger cars20 ((5.8±2)·1013 #/(km·veh)) and trucks ((2.5±0.9)·1015 #/(km·veh)) yielded in a 40-times higher emission factor for trucks compared to passenger cars. 1ACPD 5, 10125­10154, 2005 Size distributions of soot particles and emission factors D. Rose et al

  4. DISTRIBUTED DATABASES INTRODUCTION

    E-Print Network [OSTI]

    Liu, Chengfei

    D DISTRIBUTED DATABASES INTRODUCTION The development of network and data communication tech- nology distributed database management. Naturally, the decen- tralized approach reflects the distributed aspects in the definition of a distributed database exist. First, a distributed database is distributed

  5. affect postprandial factor: Topics by E-print Network

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

    may influence the decision Cheng, Yvonne 2011-01-01 3 Factors affecting wild turkey distribution and numbers Texas A&M University - TxSpace Summary: FACTORS AFFECTING...

  6. Key distributionKey distribution Key distribution, symmetric encryption

    E-Print Network [OSTI]

    Fisher, Michael

    COMP 522 Key distributionKey distribution COMP 522 Key distribution, symmetric encryption From in a secure way and must keep the key secure" · Important issue: how to distribute secret keys? COMP 522 Key distribution, manual delivery For two parties A and B: · A key could be created by A and delivered physically

  7. The Hybrid Generalized Parton Distributions Parametrization

    SciTech Connect (OSTI)

    Ahmad, S. [University of Wisconsin-Whitewater, 800 West Main St., Whitewater, Wisconsin 53190 (United States); Honkanen, H. [Iowa State University, Ames, IA 50011 (United States); Liuti, S. [University of Virginia, 382 McCormick Road, Charlottesville, Virginia 22904 (United States); Taneja, S. K. [Stony Brook, NY (United States)

    2009-08-04T23:59:59.000Z

    We construct the ERBL region of the unpolarized Generalized Parton Distributions using the phenomenological constraints obtained from recent measurements of the ep{yields}e'{gamma}p reaction, from the nucleon form factor data, and from deep inelastic inclusive measurements.

  8. Best Management Practice #3: Distribution System Audits, Leak...

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

    Leaks in distribution systems are caused by a number of factors, including pipe corrosion, high system pressure, construction disturbances, frost damage, damaged joints, and...

  9. Introduction to Dynamic Distributed

    E-Print Network [OSTI]

    Roma "La Sapienza", Università di

    Introduction to Dynamic Distributed SystemsSystems #12;Outline Introduction Churn Building Applications in Dynamic Distributed Systems RegistersRegisters Eventual Leader election Connectivity in Dynamic Distributed Systems #12;Dynamic Distributed Systems: Context & Motivations Advent of Complex Distributed

  10. Distributed Generation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers SubfoldersU.S. RefiningDistributed EnergyUntapped

  11. Nucleon Electromagnetic Form Factors

    SciTech Connect (OSTI)

    Marc Vanderhaeghen; Charles Perdrisat; Vina Punjabi

    2007-10-01T23:59:59.000Z

    There has been much activity in the measurement of the elastic electromagnetic proton and neutron form factors in the last decade, and the quality of the data has greatly improved by performing double polarization experiments, in comparison with previous unpolarized data. Here we review the experimental data base in view of the new results for the proton, and neutron, obtained at JLab, MAMI, and MIT-Bates. The rapid evolution of phenomenological models triggered by these high-precision experiments will be discussed, including the recent progress in the determination of the valence quark generalized parton distributions of the nucleon, as well as the steady rate of improvements made in the lattice QCD calculations.

  12. Distributed DBMS I Introduction

    E-Print Network [OSTI]

    Chen, Yangjun

    Distributed DBMS Outline I Introduction I Background I Distributed DBMS Architecture I Distributed Data server approach Parallel architectures Parallel DBMS techniques Parallel execution models Parallel Database Systems Distributed Object DBMS Database Interoperability Concluding Remarks #12

  13. Distributed Theorem Proving for Distributed Hybrid Systems

    E-Print Network [OSTI]

    Platzer, André

    system with a varying number of arbitrarily many cars. 1 Introduction Hybrid systems with joint discrete a multi-agent system, e.g., distributed car control systems. Such systems form distributed hybrid systemsDistributed Theorem Proving for Distributed Hybrid Systems David W. Renshaw, Sarah M. Loos

  14. Power Factor Compensation (PFC) Power Factor Compensation

    E-Print Network [OSTI]

    Knobloch,Jürgen

    Power Factor Compensation (PFC) Power Factor Compensation The power factor (PF) is defined as the ratio between the active power and the apparent power of a system. If the current and voltage are periodic with period , and [ ), then the active power is defined by ( ) ( ) (their inner product

  15. Physical Effects of Distributed PV Generation on California's Distribution System

    E-Print Network [OSTI]

    Cohen, Michael A

    2015-01-01T23:59:59.000Z

    Deployment of high-penetration photovoltaic (PV) power is expected to have a range of effects -- both positive and negative -- on the distribution grid. The magnitude of these effects may vary greatly depending upon feeder topology, climate, PV penetration level, and other factors. In this paper we present a simulation study of eight representative distribution feeders in three California climates at PV penetration levels up to 100\\%, supported by a unique database of distributed PV generation data that enables us to capture the impact of PV variability on feeder voltage and voltage regulating equipment. When comparing the influence of feeder location (i.e. climate) versus feeder type on outcomes, we find that location more strongly influences the incidence of reverse power flow, reductions in peak loading and the presence of voltage excursions. On the other hand, we find that feeder characteristics more strongly influence the magnitude of loss reduction and changes in voltage regulator operations. We find th...

  16. Spatiotemporal Distribution of NOx Storage: a Factor Controlling...

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

    LNT & SCR CLEERS Coordination & Joint Development of Benchmark Kinetics for LNT & SCR CumminsORNL-FEERC CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines...

  17. Pretzelosity distribution function

    E-Print Network [OSTI]

    H. Avakian; A. V. Efremov; P. Schweitzer; F. Yuan

    2008-08-28T23:59:59.000Z

    The 'pretzelosity' distribution is discussed. Theoretical properties, model results, and perspectives to access experimental information on this leading twist, transverse momentum dependent parton distribution function are reviewed. Its relation to helicity and transversity distributions is highlighted.

  18. Learning poisson binomial distributions

    E-Print Network [OSTI]

    Daskalakis, Constantinos

    We consider a basic problem in unsupervised learning: learning an unknown Poisson Binomial Distribution. A Poisson Binomial Distribution (PBD) over {0,1,...,n} is the distribution of a sum of n independent Bernoulli random ...

  19. About Industrial Distributed Energy

    Broader source: Energy.gov [DOE]

    The Advanced Manufacturing Office's (AMO's) Industrial Distributed Energy activities build on the success of predecessor DOE programs on distributed energy and combined heat and power (CHP) while...

  20. Introduction to Distributed Systems

    E-Print Network [OSTI]

    Pous, Damien

    1 Introduction to Distributed Systems Fabienne Boyer, LIG, fabienne.boyer@inria.fr Sources: Cours d'Olivier Gruber, Sacha Krakowiak, Sara Bouchenak, UJF Fabienne Boyer, Distributed Programming 2 Objectives Study conceptual and practical aspects of distributed systems l Client-server model l Distributed protocols l

  1. Distributed Paging Yair Bartal

    E-Print Network [OSTI]

    Bartal, Yair

    . We survey distributed data management problems including distributed paging, file allocation fantastically on an annual basis. This survey deals with distributed data management problems. Such prob­ lems in distributed data management is the de­ sign of a dynamic allocation of file copies in a network in order

  2. Power Factor Improvement

    E-Print Network [OSTI]

    Viljoen, T. A.

    1979-01-01T23:59:59.000Z

    Power factor control is a necessary ingredient in any successful Energy Management Program. Many companies are operating with power factors of 70% or less and are being penalized through the electrical utility bill. This paper starts by describing...

  3. Studies of switching field and thermal energy barrier distributions in a FePt nanoparticle system

    E-Print Network [OSTI]

    Laughlin, David E.

    Studies of switching field and thermal energy barrier distributions in a FePt nanoparticle system X dependence of the thermal stability factor, the width of the thermal energy barrier distribution- ropy energy distribution and the interaction and the thermal energy barrier distribution determined

  4. Distributed Resource Energy Analysis and Management System (DREAMS...

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

    distributed roof-top PV resources and factor advanced 15-minute short term wind and solar forecasting capability for the region into the EMS decision-making process. This...

  5. Dose factor entry and display tool for BNCT radiotherapy

    DOE Patents [OSTI]

    Wessol, Daniel E. (Bozeman, MT); Wheeler, Floyd J. (Idaho Falls, ID); Cook, Jeremy L. (Greeley, CO)

    1999-01-01T23:59:59.000Z

    A system for use in Boron Neutron Capture Therapy (BNCT) radiotherapy planning where a biological distribution is calculated using a combination of conversion factors and a previously calculated physical distribution. Conversion factors are presented in a graphical spreadsheet so that a planner can easily view and modify the conversion factors. For radiotherapy in multi-component modalities, such as Fast-Neutron and BNCT, it is necessary to combine each conversion factor component to form an effective dose which is used in radiotherapy planning and evaluation. The Dose Factor Entry and Display System is designed to facilitate planner entry of appropriate conversion factors in a straightforward manner for each component. The effective isodose is then immediately computed and displayed over the appropriate background (e.g. digitized image).

  6. Dense LU Factorization on Multicore Supercomputer Nodes

    SciTech Connect (OSTI)

    Lifflander, Jonathan [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Miller, Phil [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Venkataraman, Ramprasad [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Arya, Anshu [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Jones, Terry R [ORNL] [ORNL; Kale, Laxmikant V [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign

    2012-01-01T23:59:59.000Z

    Dense LU factorization is a prominent benchmark used to rank the performance of supercomputers. Many implementations, including the reference code HPL, use block-cyclic distributions of matrix blocks onto a two-dimensional process grid. The process grid dimensions drive a trade-off between communication and computation and are architecture- and implementation-sensitive. We show how the critical panel factorization steps can be made less communication-bound by overlapping asynchronous collectives for pivot identification and exchange with the computation of rank-k updates. By shifting this trade-off, a modified block-cyclic distribution can beneficially exploit more available parallelism on the critical path, and reduce panel factorization's memory hierarchy contention on now-ubiquitous multi-core architectures. The missed parallelism in traditional block-cyclic distributions arises because active panel factorization, triangular solves, and subsequent broadcasts are spread over single process columns or rows (respectively) of the process grid. Increasing one dimension of the process grid decreases the number of distinct processes in the other dimension. To increase parallelism in both dimensions, periodic 'rotation' is applied to the process grid to recover the row-parallelism lost by a tall process grid. During active panel factorization, rank-1 updates stream through memory with minimal reuse. In a column-major process grid, the performance of this access pattern degrades as too many streaming processors contend for access to memory. A block-cyclic mapping in the more popular row-major order does not encounter this problem, but consequently sacrifices node and network locality in the critical pivoting steps. We introduce 'striding' to vary between the two extremes of row- and column-major process grids. As a test-bed for further mapping experiments, we describe a dense LU implementation that allows a block distribution to be defined as a general function of block to processor. Other mappings can be tested with only small, local changes to the code.

  7. Distributed Basis Pursuit

    E-Print Network [OSTI]

    2012-03-14T23:59:59.000Z

    Index Terms—Basis pursuit, distributed optimization, sensor networks, augmented ... and image denoising and restoration [1], [2], compression, fitting and ...

  8. Transversity Parton Distribution

    E-Print Network [OSTI]

    Alexei Prokudin

    2013-04-01T23:59:59.000Z

    Transversity distribution is one of the three fundamental parton distributions that completely describe polarized spin 1/2 nucleon. Its chiral odd nature prevented for many years its experimental exploration, however presently we have obtained great deal of information about this distribution. This includes experimental data from Semi Inclusive Deep Inelastic Scattering, knowledge of scale dependence and phenomenological extractions. I will discuss main features of this distribution and indicate the future improvements of our knowledge.

  9. FRIB cryogenic distribution system

    SciTech Connect (OSTI)

    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

    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.

  10. FRIB cryogenic distribution system

    SciTech Connect (OSTI)

    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

    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.

  11. book review: Species distribution models for species distribution modellers

    E-Print Network [OSTI]

    Dormann, Carsten F

    2012-01-01T23:59:59.000Z

    Mapping  species  distributions:  spa? tial inference and news and update  book review  Species distribution models for species distribution modellers  Ecological niches and 

  12. Power Factor Reactive Power

    E-Print Network [OSTI]

    motor power: 117.7 V x 5.1 A = 600 W? = 0.6 kW? NOT the power measured by meter #12;Page 9 PSERC: displacement power factor: angle between voltage and current = 0 degrees pf = cos(0 degrees) = 1.0 true powerPage 1 PSERC Power Factor and Reactive Power Ward Jewell Wichita State University Power Systems

  13. Avoiding Distribution System Upgrade Costs Using Distributed Generation

    SciTech Connect (OSTI)

    Schienbein, Lawrence A.; Balducci, Patrick J.; Nguyen, Tony B.; Brown, Daryl R.; DeSteese, John G.; Speer, Gregory A.

    2004-01-20T23:59:59.000Z

    PNNL, in cooperation with three utilities, developed a database and methodology to analyze and characterize the avoided costs of Distributed Generation (DG) deployment as an alternative to traditional distribution system investment. After applying a number of screening criteria to the initial set of 307 cases, eighteen were selected for detailed analysis. Alternative DG investment scenarios were developed for these cases to permit capital, operation, maintenance, and fuel costs to be identified and incorporated into the analysis. The “customer-owned” backup power generator option was also investigated. The results of the analysis of the 18 cases show that none yielded cost savings under the alternative DG scenarios. However, the DG alternative systems were configured using very restrictive assumptions concerning reliability, peak rating, engine types and acceptable fuel. In particular it was assumed that the DG alternative in each case must meet the reliability required of conventional distribution systems (99.91% reliability). The analysis was further constrained by a requirement that each substation meet the demands placed upon it by a one in three weather occurrence. To determine if, by relaxing these requirements, the DG alternative might be more viable, one project was re-examined. The 99.91% reliability factor was still assumed for normal operating conditions but redundancy required to maintain reliability was relaxed for the relatively few hours every three years where extreme weather caused load to exceed present substation capacity. This resulted in the deferment of capital investment until later years and reduced the number of engines required for the project. The cost of both the conventional and DG alternative also dropped because the centralized power generation, variable O&M, and DG fuels costs were calculated based on present load requirements in combination with long-term forecasts of load growth, as opposed to load requirements plus a buffer based on predictions of extraordinary weather conditions. Application of the relaxed set of assumptions reduced the total cost of the DG alternative by roughly 57 percent from $7.0 million to $3.0 million. The reduction, however, did not change the overall result of the analysis, as the cost of the conventional distribution system upgrade alternative remained lower at $1.7 million. This paper also explores the feasibility of using a system of backup generators to defer investment in distribution system infrastructure. Rather than expanding substation capacity at substations experiencing slow load growth rates, PNNL considered a scenario where diesel generators were installed on location at customers participating in a program designed to offer additional power security and reliability to the customer and connection to the grid. The backup generators, in turn, could be used to meet peak demand for a limited number of hours each year, thus deferring distribution system investment. Data from an existing program at one of the three participating utilities was used to quantify the costs associated with the backup generator scenario. The results of the “customer owned” backup power generator analysis showed that in all cases the nominal cost of the DG scenario is more than the nominal cost of the base-case conventional distribution system upgrade scenario. However, in two of the cases the total present value costs of the alternative backup generator scenarios were between 15 and 22% less than those for the conventional scenarios. Overall, the results of the study offer considerable encouragement that the use of DG systems can defer conventional distribution system upgrades under the right conditions and when the DG configurations are intelligently designed. Using existing customer-owned DG to defer distribution system upgrades appears to be an immediate commercially-viable opportunity.

  14. Analysis of Voltage Rise Effect on Distribution Network with Distributed

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Analysis of Voltage Rise Effect on Distribution Network with Distributed Generation M. A. Mahmud.hossain@adfa.edu.au, and H.Pota@adfa.edu.au). Abstract: Connections of distributed generation (DG) in distribution networks are increasing. These connections of distributed generation cause voltage rise in the distribution network

  15. DIGITAL VISION & PHOTODISC Distributed

    E-Print Network [OSTI]

    Simeone, Osvaldo

    of scalability and energy efficiency and offers new opportunities through the interplay with specific distributed, to the advances in telegraphy and, later, wireless transmission. Railroad transportation, geodesy (measurement

  16. MEMORANDUM FOR DISTRIBUTION

    Office of Environmental Management (EM)

    * Department of Energy Washington, DC 20585 December 20, 2007 MEMORANDUM FOR DISTRIBUTION FROM: MICHAEL W. OWEN

  17. Distribution of Correspondence

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

    1996-08-30T23:59:59.000Z

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

  18. Cooling water distribution system

    DOE Patents [OSTI]

    Orr, Richard (Pittsburgh, PA)

    1994-01-01T23:59:59.000Z

    A passive containment cooling system for a nuclear reactor containment vessel. Disclosed is a cooling water distribution system for introducing cooling water by gravity uniformly over the outer surface of a steel containment vessel using an interconnected series of radial guide elements, a plurality of circumferential collector elements and collector boxes to collect and feed the cooling water into distribution channels extending along the curved surface of the steel containment vessel. The cooling water is uniformly distributed over the curved surface by a plurality of weirs in the distribution channels.

  19. Distributionally Robust Convex Optimization

    E-Print Network [OSTI]

    2013-09-22T23:59:59.000Z

    2College of Management and Technology, École Polytechnique Fédérale de Lausanne, ... They also allow us to characterize distributional families in terms of.

  20. 1 Smart Distribution: Coupled Microgrids

    E-Print Network [OSTI]

    R. H. Lasseter

    Abstract-- The distribution system provides major opportunities for smart grid concepts. One way to approach distribution system problems is to rethinking our distribution system to include the integration of high levels of distributed energy resources, using microgrid concepts. Basic objectives

  1. FGF growth factor analogs

    DOE Patents [OSTI]

    Zamora, Paul O. (Gaithersburg, MD); Pena, Louis A. (Poquott, NY); Lin, Xinhua (Plainview, NY); Takahashi, Kazuyuki (Germantown, MD)

    2012-07-24T23:59:59.000Z

    The present invention provides a fibroblast growth factor heparin-binding analog of the formula: ##STR00001## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X, Y and Z are as defined, pharmaceutical compositions, coating compositions and medical devices including the fibroblast growth factor heparin-binding analog of the foregoing formula, and methods and uses thereof.

  2. Software distribution using xnetlib

    SciTech Connect (OSTI)

    Dongarra, J.J. [Univ. of Tennessee, Knoxville, TN (US). Dept. of Computer Science]|[Oak Ridge National Lab., TN (US); Rowan, T.H. [Oak Ridge National Lab., TN (US); Wade, R.C. [Univ. of Tennessee, Knoxville, TN (US). Dept. of Computer Science

    1993-06-01T23:59:59.000Z

    Xnetlib is a new tool for software distribution. Whereas its predecessor netlib uses e-mail as the user interface to its large collection of public-domain mathematical software, xnetlib uses an X Window interface and socket-based communication. Xnetlib makes it easy to search through a large distributed collection of software and to retrieve requested software in seconds.

  3. DISTRIBUTION John R. Jones

    E-Print Network [OSTI]

    DISTRIBUTION John R. Jones Qualung aspen is the most widely distributed native North American tree aspen (Populus tremula), has a wider range (Weigle and Frothingham 1911). In the humid East, aspen plateaus. Aspen is one of the most common trees in the interior West, where its range (fig.1)coincides

  4. The oxygen abundance distribution in M101

    E-Print Network [OSTI]

    L. S. Pilyugin

    2001-05-07T23:59:59.000Z

    The well-observed spiral galaxy M101 was considered. The radial distributions of oxygen abundances determined in three different ways (with the classic Te - method, with the R23 - method, and with the P -- method) were compared. It was found that the parameters (the central oxygen abundance and the gradient) of the radial O/H(P) abundance distribution are close to those of the O/H(Te) abundance distribution. The parameters of the O/H(R23) abundance distribution differ significantly from those of the O/H(Te) abundance distribution: the central O/H(R23) oxygen abundance is higher by around 0.4dex and the gradient is steeper by a factor of around 1.5 as compared to those values in the O/H(Te) abundance distribution. The dispersion in O/H(P) abundance at fixed radius is rather small, around 0.08 dex, and is equal to that in O/H(Te) abundance. The dispersion in O/H(R23) abundance at fixed radius is appreciably larger, around 0.16 dex, compared to that in O/H(Te) abundance. It has been shown that the extra dispersion in O/H(R23) abundances is an artifact and reflects scatter in excitation parameter P at fixed radius.

  5. Multi-factor authentication

    DOE Patents [OSTI]

    Hamlet, Jason R; Pierson, Lyndon G

    2014-10-21T23:59:59.000Z

    Detection and deterrence of spoofing of user authentication may be achieved by including a cryptographic fingerprint unit within a hardware device for authenticating a user of the hardware device. The cryptographic fingerprint unit includes an internal physically unclonable function ("PUF") circuit disposed in or on the hardware device, which generates a PUF value. Combining logic is coupled to receive the PUF value, combines the PUF value with one or more other authentication factors to generate a multi-factor authentication value. A key generator is coupled to generate a private key and a public key based on the multi-factor authentication value while a decryptor is coupled to receive an authentication challenge posed to the hardware device and encrypted with the public key and coupled to output a response to the authentication challenge decrypted with the private key.

  6. The Wigner Distribution

    E-Print Network [OSTI]

    R. F. O'Connell

    2010-09-22T23:59:59.000Z

    In contrast to classical physics, the language of quantum mechanics involves operators and wave functions (or, more generally, density operators). However, in 1932, Wigner formulated quantum mechanics in terms of a distribution function $W(q,p)$, the marginals of which yield the correct quantum probabilities for $q$ and $p$ separately \\cite{wigner}. Its usefulness stems from the fact that it provides a re-expression of quantum mechanics in terms of classical concepts so that quantum mechanical expectation values are now expressed as averages over phase-space distribution functions. In other words, statistical information is transferred from the density operator to a quasi-classical (distribution) function.

  7. Factors Affecting Photosynthesis!

    E-Print Network [OSTI]

    Kudela, Raphael M.

    Factors Affecting Photosynthesis! Temperature Eppley (1972) Light Sverdrup's Critical Depth-493, but the general concept is still valid! ! #12;PB opt & Temperature! #12;Photosynthesis & Temperature! Remember: in the laboratory, we can measure photosynthesis versus irradiance (PvsE) and calculate Ek, Pmax, and alpha

  8. Public Health FAT FACTORS

    E-Print Network [OSTI]

    Qian, Ning

    : THE UNITED STATES SPENDS MORE ON HEALTH CARE THAN ANY OTHER COUNTRY. YET WE CONTINUE TO FALL FAR BEHIND States spends an astonishing percent of our gross domestic product on health care--significantly moreColumbia Public Health HOT TOPIC Climate Change FAT FACTORS Obesity Prevention BOOK SMART

  9. Syntax of adverb distribution 

    E-Print Network [OSTI]

    Edelstein, Elspeth Claire

    2012-11-28T23:59:59.000Z

    The distribution of adverbs is particularly difficult to account for, given the amount of variation it encompasses. Not only are adverbs typically optional, but any adverb may also appear in several different positions ...

  10. A distributed Hash table

    E-Print Network [OSTI]

    Dabek, Frank (Frank Edward), 1977-

    2006-01-01T23:59:59.000Z

    DHash is a new system that harnesses the storage and network resources of computers distributed across the Internet by providing a wide-area storage service, DHash. DHash frees applications from re-implementing mechanisms ...

  11. SUPERTHERMAL ELECTRON DISTRIBUTION

    SciTech Connect (OSTI)

    Kauffman, R

    2007-12-20T23:59:59.000Z

    This memo discusses the analysis of the high-energy x-ray distribution from a laser-induced plasma to determine the superthermal electron distribution. The methods of deconvolution outlined in I are similar to formulae derived in the literature not including and including effects due to electron stopping. In II the methods are applied to an x-ray spectrum from an Au disc irradiated by ARGUS.

  12. Equilibrium Distributions and Superconductivity

    E-Print Network [OSTI]

    Ashot Vagharshakyan

    2011-06-07T23:59:59.000Z

    In this article two models for charges distributions are discussed. On the basis of our consideration we put different points of view for stationary state. We prove that only finite energy model for charges' distribution and well-known variation principle explain some well-known experimental results. A new model for superconductivity was suggested, too. In frame of that model some characteristic experimental results for superconductors is possible to explain.

  13. Quantum dense key distribution

    SciTech Connect (OSTI)

    Degiovanni, I.P.; Ruo Berchera, I.; Castelletto, S.; Rastello, M.L.; Bovino, F.A.; Colla, A.M.; Castagnoli, G. [Istituto Elettrotecnico Nazionale G. Ferraris, Strada delle Cacce 91, 10135 Torino (Italy); ELSAG SpA, Via Puccini 2, 16154, Genova (Italy)

    2004-03-01T23:59:59.000Z

    This paper proposes a protocol for quantum dense key distribution. This protocol embeds the benefits of a quantum dense coding and a quantum key distribution and is able to generate shared secret keys four times more efficiently than the Bennet-Brassard 1984 protocol. We hereinafter prove the security of this scheme against individual eavesdropping attacks, and we present preliminary experimental results, showing its feasibility.

  14. Localitysensitive hashing using stable distributions

    E-Print Network [OSTI]

    Locality­sensitive hashing using stable distributions 4.1 LSH scheme based s­stable distributions. of work appeared earlier in [DIIM04]. 4.1.1 s­stable distributions Stable distributions [Zol86] defined limits of normalized sums independent identically distributed variables alternate definition follows

  15. Distributed Wind Diffusion Model Overview (Presentation)

    SciTech Connect (OSTI)

    Preus, R.; Drury, E.; Sigrin, B.; Gleason, M.

    2014-07-01T23:59:59.000Z

    Distributed wind market demand is driven by current and future wind price and performance, along with several non-price market factors like financing terms, retail electricity rates and rate structures, future wind incentives, and others. We developed a new distributed wind technology diffusion model for the contiguous United States that combines hourly wind speed data at 200m resolution with high resolution electricity load data for various consumer segments (e.g., residential, commercial, industrial), electricity rates and rate structures for utility service territories, incentive data, and high resolution tree cover. The model first calculates the economics of distributed wind at high spatial resolution for each market segment, and then uses a Bass diffusion framework to estimate the evolution of market demand over time. The model provides a fundamental new tool for characterizing how distributed wind market potential could be impacted by a range of future conditions, such as electricity price escalations, improvements in wind generator performance and installed cost, and new financing structures. This paper describes model methodology and presents sample results for distributed wind market potential in the contiguous U.S. through 2050.

  16. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index Journal Cited Half-Life 2012 JCR Science Edition Journal: CZECHOSLOVAK MATHEMATICAL JOURNAL Mark Journal Title ISSN Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Citable Items

  17. Gluon distribution functions and Higgs boson production at moderate transverse momentum

    SciTech Connect (OSTI)

    Sun P.; Yuan F.; Xiao, B.W.

    2011-11-04T23:59:59.000Z

    We investigate the gluon distribution functions and their contributions to the Higgs boson production in pp collisions in the transverse momentum-dependent factorization formalism. In addition to the usual azimuthal symmetric transverse momentum-dependent gluon distribution, we find that the azimuthal correlated gluon distribution also contributes to the Higgs boson production. This explains recent findings on the additional contribution in the transverse momentum resummation for the Higgs boson production as compared to that for electroweak boson production processes. We further examine the small-x naive kt-factorization in the dilute region and find that the azimuthal correlated gluon distribution contribution is consistently taken into account. The result agrees with the transverse momentum-dependent factorization formalism. We comment on the possible breakdown of the naive kt-factorization in the dense medium region, due to the unique behaviors for the gluon distributions.

  18. Tsallis Distribution Decorated With Log-Periodic Oscillation

    E-Print Network [OSTI]

    Wilk, Grzegorz

    2015-01-01T23:59:59.000Z

    In many situations, in all branches of physics, one encounters power-like behavior of some variables which are best described by a Tsallis distribution characterized by a nonextensivity parameter $q$ and scale parameter $T$. However, there exist experimental results which can be described only by a Tsallis distributions which are additionally decorated by some log-periodic oscillating factor. We argue that such a factor can originate from allowing for a complex nonextensivity parameter $q$. The possible information conveyed by such an approach (like the occurrence of complex heat capacity, the notion of complex probability or complex multiplicative noise) will also be discussed.

  19. Distributed data transmitter

    DOE Patents [OSTI]

    Brown, Kenneth Dewayne (Grain Valley, MO); Dunson, David (Kansas City, MO)

    2008-06-03T23:59:59.000Z

    A distributed data transmitter (DTXR) which is an adaptive data communication microwave transmitter having a distributable architecture of modular components, and which incorporates both digital and microwave technology to provide substantial improvements in physical and operational flexibility. The DTXR has application in, for example, remote data acquisition involving the transmission of telemetry data across a wireless link, wherein the DTXR is integrated into and utilizes available space within a system (e.g., a flight vehicle). In a preferred embodiment, the DTXR broadly comprises a plurality of input interfaces; a data modulator; a power amplifier; and a power converter, all of which are modularly separate and distinct so as to be substantially independently physically distributable and positionable throughout the system wherever sufficient space is available.

  20. Distributed data transmitter

    DOE Patents [OSTI]

    Brown, Kenneth Dewayne (Grain Valley, MO); Dunson, David (Kansas City, MO)

    2006-08-08T23:59:59.000Z

    A distributed data transmitter (DTXR) which is an adaptive data communication microwave transmitter having a distributable architecture of modular components, and which incorporates both digital and microwave technology to provide substantial improvements in physical and operational flexibility. The DTXR has application in, for example, remote data acquisition involving the transmission of telemetry data across a wireless link, wherein the DTXR is integrated into and utilizes available space within a system (e.g., a flight vehicle). In a preferred embodiment, the DTXR broadly comprises a plurality of input interfaces; a data modulator; a power amplifier; and a power converter, all of which are modularly separate and distinct so as to be substantially independently physically distributable and positionable throughout the system wherever sufficient space is available.

  1. Distributed Radio Interferometric Calibration

    E-Print Network [OSTI]

    Yatawatta, Sarod

    2015-01-01T23:59:59.000Z

    Increasing data volumes delivered by a new generation of radio interferometers require computationally efficient and robust calibration algorithms. In this paper, we propose distributed calibration as a way of improving both computational cost as well as robustness in calibration. We exploit the data parallelism across frequency that is inherent in radio astronomical observations that are recorded as multiple channels at different frequencies. Moreover, we also exploit the smoothness of the variation of calibration parameters across frequency. Data parallelism enables us to distribute the computing load across a network of compute agents. Smoothness in frequency enables us reformulate calibration as a consensus optimization problem. With this formulation, we enable flow of information between compute agents calibrating data at different frequencies, without actually passing the data, and thereby improving robustness. We present simulation results to show the feasibility as well as the advantages of distribute...

  2. Air distribution effectiveness with stratified air distribution systems

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    1 Air distribution effectiveness with stratified air distribution systems Kisup Lee* Zheng Jiang, Ph.D Qingyan Chen, Ph.D. Student Member ASHRAE Fellow ASHRAE ABSTRACT Stratified air distribution systems such as Traditional Displacement Ventilation (TDV) and Under- Floor Air Distribution (UFAD

  3. Worst Case Scenario for Large Distribution Networks with Distributed Generation

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Worst Case Scenario for Large Distribution Networks with Distributed Generation M. A. Mahmud) in distri- bution network has significant effects on voltage profile for both customers and distribution on variation of the voltage and the amount of DG that can be connected to the distribution networks. This paper

  4. A Multi Agent-Based Framework for Simulating Household PHEV Distribution and Electric Distribution Network Impact

    SciTech Connect (OSTI)

    Cui, Xiaohui [ORNL] [ORNL; Liu, Cheng [ORNL] [ORNL; Kim, Hoe Kyoung [ORNL] [ORNL; Kao, Shih-Chieh [ORNL] [ORNL; Tuttle, Mark A [ORNL] [ORNL; Bhaduri, Budhendra L [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    The variation of household attributes such as income, travel distance, age, household member, and education for different residential areas may generate different market penetration rates for plug-in hybrid electric vehicle (PHEV). Residential areas with higher PHEV ownership could increase peak electric demand locally and require utilities to upgrade the electric distribution infrastructure even though the capacity of the regional power grid is under-utilized. Estimating the future PHEV ownership distribution at the residential household level can help us understand the impact of PHEV fleet on power line congestion, transformer overload and other unforeseen problems at the local residential distribution network level. It can also help utilities manage the timing of recharging demand to maximize load factors and utilization of existing distribution resources. This paper presents a multi agent-based simulation framework for 1) modeling spatial distribution of PHEV ownership at local residential household level, 2) discovering PHEV hot zones where PHEV ownership may quickly increase in the near future, and 3) estimating the impacts of the increasing PHEV ownership on the local electric distribution network with different charging strategies. In this paper, we use Knox County, TN as a case study to show the simulation results of the agent-based model (ABM) framework. However, the framework can be easily applied to other local areas in the US.

  5. Renewable Energy: Distributed Generation Policies and Programs...

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

    Energy Policies & Programs Renewable Energy: Distributed Generation Policies and Programs Renewable Energy: Distributed Generation Policies and Programs Distributed generation...

  6. Distributed Energy Resources for Carbon Emissions Mitigation

    E-Print Network [OSTI]

    Firestone, Ryan; Marnay, Chris

    2008-01-01T23:59:59.000Z

    Distributed Energy Resource Technology Characterizations. ”ABORATORY Distributed Energy Resources for Carbon Emissions5128 Distributed Energy Resources for Carbon Emissions

  7. Cook Inlet (CI) distribution

    E-Print Network [OSTI]

    ). During the winter, beluga whales occur in offshore waters associated with pack ice. In the spring RANGE Beluga whales are distributed throughout seasonally ice-covered arctic and subarctic waters of the Northern Hemisphere (Gurevich 1980), and are closely associated with open leads and polynyas in ice

  8. MAIL DISTRIBUTION MAIL PRODUCTION

    E-Print Network [OSTI]

    MAIL DISTRIBUTION AND MAIL PRODUCTION OPERATIONS GUIDE November 07 Revised November 07 #12;2 Mail/billing......................................................................................1-5346 Mail Production of the University non-profit permit. 3. All bulk mailings must be coordinated with Mail Production at the earliest

  9. Proceedings Engineering Distributed Objects

    E-Print Network [OSTI]

    Emmerich, Wolfgang

    -18, 1999 Edited by Wolfgang Emmerich Volker Gruhn #12;#12;Table of Contents Introduction Wolfgang Emmerich;#12;Engineering Distributed Objects (EDO 99) Introduction Wolfgang Emmerich Dept. of Computer Science University College London London WC1E 6BT United Kingdom w.emmerich@cs.ucl.ac.uk Volker Gruhn Informatik 10 Universit

  10. CONSULTANT REPORT DISTRIBUTED GENERATION

    E-Print Network [OSTI]

    an independent cost analysis to interconnect and integrate increased penetration levels of renewable distributed costs. The Energy Commission considers this study a first step toward the 2012 Integrated Energy Policy Generation Integration Cost Study: Analytical Framework. California Energy Commission. CEC2002013007. i

  11. Distributed analysis in ATLAS

    E-Print Network [OSTI]

    Dewhurst, Alastair; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    The ATLAS experiment accumulated more than 140 PB of data during the first run of the Large Hadron Collider (LHC) at CERN. The analysis of such an amount of data for the distributed physics community is a challenging task. The Distributed Analysis (DA) system of the ATLAS experiment is an established and stable component of the ATLAS distributed computing operations. About half a million user jobs are daily running on DA resources, submitted by more than 1500 ATLAS physicists. The reliability of the DA system during the first run of the LHC and the following shutdown period has been high thanks to the continuous automatic validation of the distributed analysis sites and the user support provided by a dedicated team of expert shifters. During the LHC shutdown, the ATLAS computing model has undergone several changes to improve the analysis workflows, including the re-design of the production system, a new analysis data format and event model, and the development of common reduction and analysis frameworks. We r...

  12. Distributed Energy Alternatives to Electrical

    E-Print Network [OSTI]

    Pennycook, Steve

    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

  13. Helium Compton Form Factor Measurements at CLAS

    SciTech Connect (OSTI)

    Voutier, Eric J.-M. [Laboratoire de Physique Subatomique et Cosmologie

    2013-07-01T23:59:59.000Z

    The distribution of the parton content of nuclei, as encoded via the generalized parton distributions (GPDs), can be accessed via the deeply virtual Compton scattering (DVCS) process contributing to the cross section for leptoproduction of real photons. Similarly to the scattering of light by a material, DVCS provides information about the dynamics and the spatial structure of hadrons. The sensitivity of this process to the lepton beam polarization allows to single-out the DVCS amplitude in terms of Compton form factors that contain GPDs information. The beam spin asymmetry of the $^4$He($\\vec {\\mathrm e}$,e$' \\gamma ^4$He) process was measured in the experimental Hall B of the Jefferson Laboratory to extract the real and imaginary parts of the twist-2 Compton form factor of the $^4$He nucleus. The experimental results reported here demonstrate the relevance of this method for such a goal, and suggest the dominance of the Bethe-Heitler amplitude to the unpolarized process in the kinematic range explored by the experiment.

  14. Dynamic Voltage Regulation Using Distributed Energy Resources

    SciTech Connect (OSTI)

    Xu, Yan [ORNL; Rizy, D Tom [ORNL; Li, Fangxing [ORNL; Kueck, John D [ORNL

    2007-01-01T23:59:59.000Z

    Many distributed energy resources (DE) are near load centres and equipped with power electronics converters to interface with the grid, therefore it is feasible for DE to provide ancillary services such as voltage regulation, nonactive power compensation, and power factor correction. A synchronous condenser and a microturbine with an inverter interface are implemented in parallel in a distribution system to regulate the local voltage. Voltage control schemes of the inverter and the synchronous condenser are developed. The experimental results show that both the inverter and the synchronous condenser can regulate the local voltage instantaneously, while the dynamic response of the inverter is faster than the synchronous condenser; and that integrated voltage regulation (multiple DE perform voltage regulation) can increase the voltage regulation capability, increase the lifetime of the equipment, and reduce the capital and operation costs.

  15. Generalized parton distributions and exclusive processes

    SciTech Connect (OSTI)

    Guzey, Vadim [Hampton U.

    2013-10-01T23:59:59.000Z

    ? In last fifteen years, GPDs have emerged as a powerful tool to reveal such aspects of the QCD structure of the nucleon as: - 3D parton correlations and distributions; - spin content of the nucleon. ? Further advances in the field of GPDs and hard exclusive processes rely on: - developments in theory and new methods in phenomenology such as new flexible parameterizations, neural networks, global QCD fits - new high-precision data covering unexplored kinematics: JLab at 6 and 12 GeV, Hermes with recoil detector, Compass, EIC. This slide-show presents: ? Nucleon structure in QCD, particularly hard processes, factorization and parton distributions; and a brief overview of GPD phenomenology, including basic properties of GPDs, GPDs and QCD structure of the nucleon, and constraining GPDs from experiments.

  16. Inhomogeneous distribution of droplets in cloud turbulence

    E-Print Network [OSTI]

    Itzhak Fouxon; Yongnam Park; Roei Harduf; Changhoon Lee

    2014-10-30T23:59:59.000Z

    We solve the problem of spatial distribution of inertial particles that sediment in turbulent flow with small ratio of acceleration of fluid particles to acceleration of gravity $g$. The particles are driven by linear drag and have arbitrary inertia. The pair-correlation function of concentration obeys a power-law in distance with negative exponent. Divergence at zero signifies singular distribution of particles in space. Independently of particle size the exponent is ratio of integral of energy spectrum of turbulence times the wavenumber to $g$ times numerical factor. We find Lyapunov exponents and confirm predictions by direct numerical simulations of Navier-Stokes turbulence. The predictions include typical case of water droplets in clouds. This significant progress in the study of turbulent transport is possible because strong gravity makes the particle's velocity at a given point unique.

  17. Momentum distributions for H2(e,e?p)

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

    Ford, William P.; Jeschonnek, Sabine; Van Orden, J. W.

    2014-12-01T23:59:59.000Z

    [Background] A primary goal of deuteron electrodisintegration is the possibility of extracting the deuteron momentum distribution. This extraction is inherently fraught with difficulty, as the momentum distribution is not an observable and the extraction relies on theoretical models dependent on other models as input. [Purpose] We present a new method for extracting the momentum distribution which takes into account a wide variety of model inputs thus providing a theoretical uncertainty due to the various model constituents. [Method] The calculations presented here are using a Bethe-Salpeter like formalism with a wide variety of bound state wave functions, form factors, and finalmore »state interactions. We present a method to extract the momentum distributions from experimental cross sections, which takes into account the theoretical uncertainty from the various model constituents entering the calculation. [Results] In order to test the extraction pseudo-data was generated, and the extracted "experimental'' distribution, which has theoretical uncertainty from the various model inputs, was compared with the theoretical distribution used to generate the pseudo-data. [Conclusions] In the examples we compared the original distribution was typically within the error band of the extracted distribution. The input wave functions do contain some outliers which are discussed in the text, but at least this procedure can provide an upper bound on the deuteron momentum distribution. Due to the reliance on the theoretical calculation to obtain this quantity any extraction method should account for the theoretical error inherent in these calculations due to model inputs.« less

  18. Momentum distributions for 2H(e,e'p)

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

    Ford, William P. [ODU; Jeschonnek, Sabine [Ohio State University; Van Orden, J. Wallace [ODU, JLAB

    2014-12-01T23:59:59.000Z

    [Background] A primary goal of deuteron electrodisintegration is the possibility of extracting the deuteron momentum distribution. This extraction is inherently fraught with difficulty, as the momentum distribution is not an observable and the extraction relies on theoretical models dependent on other models as input. [Purpose] We present a new method for extracting the momentum distribution which takes into account a wide variety of model inputs thus providing a theoretical uncertainty due to the various model constituents. [Method] The calculations presented here are using a Bethe-Salpeter like formalism with a wide variety of bound state wave functions, form factors, and final state interactions. We present a method to extract the momentum distributions from experimental cross sections, which takes into account the theoretical uncertainty from the various model constituents entering the calculation. [Results] In order to test the extraction pseudo-data was generated, and the extracted "experimental'' distribution, which has theoretical uncertainty from the various model inputs, was compared with the theoretical distribution used to generate the pseudo-data. [Conclusions] In the examples we compared the original distribution was typically within the error band of the extracted distribution. The input wave functions do contain some outliers which are discussed in the text, but at least this procedure can provide an upper bound on the deuteron momentum distribution. Due to the reliance on the theoretical calculation to obtain this quantity any extraction method should account for the theoretical error inherent in these calculations due to model inputs.

  19. Momentum distributions for 2H(e,e'p)

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

    Ford, William P.; Jeschonnek, Sabine; Van Orden, J. Wallace

    2014-12-01T23:59:59.000Z

    [Background] A primary goal of deuteron electrodisintegration is the possibility of extracting the deuteron momentum distribution. This extraction is inherently fraught with difficulty, as the momentum distribution is not an observable and the extraction relies on theoretical models dependent on other models as input. [Purpose] We present a new method for extracting the momentum distribution which takes into account a wide variety of model inputs thus providing a theoretical uncertainty due to the various model constituents. [Method] The calculations presented here are using a Bethe-Salpeter like formalism with a wide variety of bound state wave functions, form factors, and finalmore »state interactions. We present a method to extract the momentum distributions from experimental cross sections, which takes into account the theoretical uncertainty from the various model constituents entering the calculation. [Results] In order to test the extraction pseudo-data was generated, and the extracted "experimental'' distribution, which has theoretical uncertainty from the various model inputs, was compared with the theoretical distribution used to generate the pseudo-data. [Conclusions] In the examples we compared the original distribution was typically within the error band of the extracted distribution. The input wave functions do contain some outliers which are discussed in the text, but at least this procedure can provide an upper bound on the deuteron momentum distribution. Due to the reliance on the theoretical calculation to obtain this quantity any extraction method should account for the theoretical error inherent in these calculations due to model inputs.« less

  20. Finding a Minimally Informative Dirichlet Prior Distribution Using Least Squares

    SciTech Connect (OSTI)

    Dana Kelly; Corwin Atwood

    2011-03-01T23:59:59.000Z

    In a Bayesian framework, the Dirichlet distribution is the conjugate distribution to the multinomial likelihood function, and so the analyst is required to develop a Dirichlet prior that incorporates available information. However, as it is a multiparameter distribution, choosing the Dirichlet parameters is less straight-forward than choosing a prior distribution for a single parameter, such as p in the binomial distribution. In particular, one may wish to incorporate limited information into the prior, resulting in a minimally informative prior distribution that is responsive to updates with sparse data. In the case of binomial p or Poisson, the principle of maximum entropy can be employed to obtain a so-called constrained noninformative prior. However, even in the case of p, such a distribution cannot be written down in closed form, and so an approximate beta distribution is used in the case of p. In the case of the multinomial model with parametric constraints, the approach of maximum entropy does not appear tractable. This paper presents an alternative approach, based on constrained minimization of a least-squares objective function, which leads to a minimally informative Dirichlet prior distribution. The alpha-factor model for common-cause failure, which is widely used in the United States, is the motivation for this approach, and is used to illustrate the method. In this approach to modeling common-cause failure, the alpha-factors, which are the parameters in the underlying multinomial aleatory model for common-cause failure, must be estimated from data that is often quite sparse, because common-cause failures tend to be rare, especially failures of more than two or three components, and so a prior distribution that is responsive to updates with sparse data is needed.

  1. Light Meson Distribution Amplitudes

    E-Print Network [OSTI]

    R. Arthur; P. A. Boyle; D. Brömmel; M. A. Donnellan; J. M. Flynn; A. Jüttner; H. Pedroso de Lima; T. D. Rae; C. T. Sachrajda; B. Samways

    2010-11-12T23:59:59.000Z

    We calculated the first two moments of the light-cone distribution amplitudes for the pseudoscalar mesons ($\\pi$ and $K$) and the longitudinally polarised vector mesons ($\\rho$, $K^*$ and $\\phi$) as part of the UKQCD and RBC collaborations' $N_f=2+1$ domain-wall fermion phenomenology programme. These quantities were obtained with a good precision and, in particular, the expected effects of $SU(3)$-flavour symmetry breaking were observed. Operators were renormalised non-perturbatively and extrapolations to the physical point were made, guided by leading order chiral perturbation theory. The main results presented are for two volumes, $16^3\\times 32$ and $24^3\\times 64$, with a common lattice spacing. Preliminary results for a lattice with a finer lattice spacing, $32^3\\times64$, are discussed and a first look is taken at the use of twisted boundary conditions to extract distribution amplitudes.

  2. Blackbody Distribution for Wormholes

    E-Print Network [OSTI]

    P. F. González-Díaz

    1993-09-13T23:59:59.000Z

    By assuming that only (i) bilocal vertex operators which are diagonal with respect to the basis for local field operators, and (ii) the convergent elements with nonzero positive energy of the density matrix representing the quantum state of multiply-connected wormholes, contribute the path integral that describes the effects of wormholes on ordinary matter fields at low energy, it is obtained that the probability measure for multiply connected wormholes with nondegenerate energy spectrum is given in terms of a Planckian probability distribution for the momenta of a quantum field $\\frac{1}{2}\\alpha^ {2}$, where the $\\alpha$'s are the Coleman parameters, rather than a classical gaussian distribution law, and that an observable classical universe can exist if, and only if, such multiply connected wormholes are allowed to occur.

  3. Multipartite secure state distribution

    SciTech Connect (OSTI)

    Duer, W.; Briegel, H.-J. [Institut fuer Theoretische Physik, Universitaet Innsbruck, Technikerstrasse 25, A-6020 Innsbruck (Austria); Institut fuer Quantenoptik und Quanteninformation der Oesterreichischen, Akademie der Wissenschaften, Innsbruck (Austria); Calsamiglia, J. [Institut fuer Theoretische Physik, Universitaet Innsbruck, Technikerstrasse 25, A-6020 Innsbruck (Austria)

    2005-04-01T23:59:59.000Z

    We introduce the distribution of a secret multipartite entangled state in a real-world scenario as a quantum primitive. We show that in the presence of noisy quantum channels (and noisy control operations), any state chosen from the set of two-colorable graph states (Calderbank-Shor-Steane codewords) can be created with high fidelity while it remains unknown to all parties. This is accomplished by either blind multipartite entanglement purification, which we introduce in this paper, or by multipartite entanglement purification of enlarged states, which offers advantages over an alternative scheme based on standard channel purification and teleportation. The parties are thus provided with a secret resource of their choice for distributed secure applications.

  4. Mapping Biomass Distribution Potential

    E-Print Network [OSTI]

    Schaetzel, Michael

    2010-11-18T23:59:59.000Z

    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 nation’s 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...

  5. Fuzzy logic based operated device identification in power distribution systems

    E-Print Network [OSTI]

    Manivannan, Karthick Muthu

    2002-01-01T23:59:59.000Z

    by the po~er lines and the other components of distribution systems make them vulnerable to various factors like weather, disturbances caused by animals or human activity, overloading of the system and the aging of or defect in, the components...

  6. Parton distribution function uncertainties & nuclear corrections for the LHC

    E-Print Network [OSTI]

    Schienbein, I; Keppel, C; Morfín, J G; Olness, Fredrick I; Owens, J F

    2008-01-01T23:59:59.000Z

    We study nuclear effects of charged current deep inelastic neutrino-iron scattering in the framework of a chi^2 analysis of parton distribution functions (PDFs). We extract a set of iron PDFs which are used to compute x_Bj-dependent and Q^2-dependent nuclear correction factors for iron structure functions which are required in global analyses of free nucleon PDFs. We compare our results with nuclear correction factors from neutrino-nucleus scattering models and correction factors for charged lepton-iron scattering. We find that, except for very high x_Bj, our correction factors differ in both shape and magnitude from the correction factors of the models and charged-lepton scattering.

  7. A reliability assessment methodology for distribution systems with distributed generation

    E-Print Network [OSTI]

    Duttagupta, Suchismita Sujaya

    2006-08-16T23:59:59.000Z

    Reliability assessment is of primary importance in designing and planning distribution systems that operate in an economic manner with minimal interruption of customer loads. With the advances in renewable energy sources, Distributed Generation (DG...

  8. GASIFICATION FOR DISTRIBUTED GENERATION

    SciTech Connect (OSTI)

    Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

    2000-05-01T23:59:59.000Z

    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.

  9. Distributed Energy Resources for Carbon Emissions Mitigation

    E-Print Network [OSTI]

    Firestone, Ryan; Marnay, Chris

    2008-01-01T23:59:59.000Z

    and Energy Reliability, Distribution System Integrationand Energy Reliability, Distribution System Integration

  10. Modern Grid Initiative Distribution Taxonomy Final Report

    SciTech Connect (OSTI)

    Schneider, Kevin P.; Chen, Yousu; Chassin, David P.; Pratt, Robert G.; Engel, David W.; Thompson, Sandra E.

    2008-11-01T23:59:59.000Z

    This is the final report for the development of a toxonomy of prototypical electrical distribution feeders. Two of the primary goals of the Department of Energy's (DOE) Modern Grid Initiative (MGI) are 'to accelerate the modernization of our nation's electricity grid' and to 'support demonstrations of systems of key technologies that can serve as the foundation for an integrated, modern power grid'. A key component to the realization of these goals is the effective implementation of new, as well as existing, 'smart grid technologies'. Possibly the largest barrier that has been identified in the deployment of smart grid technologies is the inability to evaluate how their deployment will affect the electricity infrastructure, both locally and on a regional scale. The inability to evaluate the impacts of these technologies is primarily due to the lack of detailed electrical distribution feeder information. While detailed distribution feeder information does reside with the various distribution utilities, there is no central repository of information that can be openly accessed. The role of Pacific Northwest National Laboratory (PNNL) in the MGI for FY08 was to collect distribution feeder models, in the SynerGEE{reg_sign} format, from electric utilities around the nation so that they could be analyzed to identify regional differences in feeder design and operation. Based on this analysis PNNL developed a taxonomy of 24 prototypical feeder models in the GridLAB-D simulations environment that contain the fundamental characteristics of non-urban core, radial distribution feeders from the various regions of the U.S. Weighting factors for these feeders are also presented so that they can be used to generate a representative sample for various regions within the United States. The final product presented in this report is a toolset that enables the evaluation of new smart grid technologies, with the ability to aggregate their effects to regional and national levels. The distribution feeder models presented in this report are based on actual utility models but do not contain any proprietary or system specific information. As a result, the models discussed in this report can be openly distributed to industry, academia, or any interested entity, in order to facilitate the ability to evaluate smart grid technologies.

  11. Review of Axial Burnup Distribution Considerations for Burnup Credit Calculations

    SciTech Connect (OSTI)

    Wagner, J.C.; DeHart, M.D.

    2000-03-01T23:59:59.000Z

    This report attempts to summarize and consolidate the existing knowledge on axial burnup distribution issues that are important to burnup credit criticality safety calculations. Recently released Nuclear Regulatory Commission (NRC) staff guidance permits limited burnup credit, and thus, has prompted resolution of the axial burnup distribution issue. The reactivity difference between the neutron multiplication factor (keff) calculated with explicit representation of the axial burnup distribution and keff calculated assuming a uniform axial burnup is referred to as the ``end effect.'' This end effect is shown to be dependent on many factors, including the axial-burnup profile, total accumulated burnup, cooling time, initial enrichment, assembly design, and the isotopics considered (i.e., actinide-only or actinides plus fission products). Axial modeling studies, efforts related to the development of axial-profile databases, and the determination of bounding axial profiles are also discussed. Finally, areas that could benefit from further efforts are identified.

  12. Distributed computing systems programme

    SciTech Connect (OSTI)

    Duce, D.

    1984-01-01T23:59:59.000Z

    Publication of this volume coincides with the completion of the U.K. Science and Engineering Research Council's coordinated programme of research in Distributed Computing Systems (DCS) which ran from 1977 to 1984. The volume is based on presentations made at the programme's final conference. The first chapter explains the origins and history of DCS and gives an overview of the programme and its achievements. The remaining sixteen chapters review particular research themes (including imperative and declarative languages, and performance modelling), and describe particular research projects in technical areas including local area networks, design, development and analysis of concurrent systems, parallel algorithm design, functional programming and non-von Neumann computer architectures.

  13. Distributed Optimization System

    DOE Patents [OSTI]

    Hurtado, John E. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Robinett, III, Rush D. (Tijeras, NM)

    2004-11-30T23:59:59.000Z

    A search system and method for controlling multiple agents to optimize an objective using distributed sensing and cooperative control. The search agent can be one or more physical agents, such as a robot, and can be software agents for searching cyberspace. The objective can be: chemical sources, temperature sources, radiation sources, light sources, evaders, trespassers, explosive sources, time dependent sources, time independent sources, function surfaces, maximization points, minimization points, and optimal control of a system such as a communication system, an economy, a crane, and a multi-processor computer.

  14. B-meson distribution amplitudes

    E-Print Network [OSTI]

    A. G. Grozin

    2005-06-24T23:59:59.000Z

    B-meson light-cone distribution amplitudes are discussed in these lectures in the framework of HQET. The evolution equation for the leading-twist distribution amplitude is derived in one-loop approximation. QCD sum rules for distribution amplitudes are discussed.

  15. Benford distributions in NMR

    E-Print Network [OSTI]

    Gaurav Bhole; Abhishek Shukla; T. S. Mahesh

    2014-06-27T23:59:59.000Z

    Benford's Law is an empirical law which predicts the frequency of significant digits in databases corresponding to various phenomena, natural or artificial. Although counter intuitive at the first sight, it predicts a higher occurrence of digit 1, and decreasing occurrences to other larger digits. Here we report the Benford analysis of various NMR databases and draw several interesting inferences. We observe that, in general, NMR signals follow Benford distribution in time-domain as well as in frequency domain. Our survey included NMR signals of various nuclear species in a wide variety of molecules in different phases, namely liquid, liquid-crystalline, and solid. We also studied the dependence of Benford distribution on NMR parameters such as signal to noise ratio, number of scans, pulse angles, and apodization. In this process we also find that, under certain circumstances, the Benford analysis can distinguish a genuine spectrum from a visually identical simulated spectrum. Further we find that chemical-shift databases and amplitudes of certain radio frequency pulses generated using optimal control techniques also satisfy Benford's law to a good extent.

  16. Nonlinear DSTATCOM controller design for distribution network with distributed generation to enhance voltage stability

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Nonlinear DSTATCOM controller design for distribution network with distributed generation Accepted 19 June 2013 Keywords: Distributed generation Distribution network DSATACOM Partial feedback connected to a distribution network with distributed generation (DG) to regulate the line voltage

  17. Harmonic propagation on an electric distribution system: Field measurements compared with computer simulation

    SciTech Connect (OSTI)

    Williams, S.M. (Naval Postgraduate School, Monterey, CA (United States)); Brownfield, G.T. (Union Electric Co., St. Louis, MO (United States)); Duffus, J.W. (Univ. of Missouri, Columbia, MO (United States). Power Electronics Research Center)

    1993-04-01T23:59:59.000Z

    Power electronic loads are occupying an increasing fraction of the total load on distribution feeders. Coincidentally, there is a greater use of power factor correction capacitors on the distribution system. These two factors can present poor operating conditions in the form of high harmonic levels propagating through a distribution system. Electric utility engineers are facing an ever increasing number of situations which require the analysis of the propagation of harmonics on a distribution system. HARMFLO was developed by EPRI for use in the analysis of harmonics on a power system. However, for a typical analysis of a distribution system, data for some of the parameters required by HARMFLO are not available. Furthermore, exact load information is usually not available. Harmonic levels determined from field tests on a distribution system are compared to results of HARMFLO simulations to determine if this analysis tool can be expected to provide useful results despite the lack of exact information for load modeling and other system parameters.

  18. Building a completely positive factorization

    E-Print Network [OSTI]

    2010-03-14T23:59:59.000Z

    Aug 19, 2009 ... Abstract. Using a bordering approach, and building upon an already known factorization of a principal block, we establish sufficient conditions.

  19. Service quality planning for freight distribution with time windows in large networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    as a quality factor of the service, since its nature and configuration also affects the total transportation1 Service quality planning for freight distribution with time windows in large networks Francesco introduces a methodology whose aim is to evaluate how the quality of a freight distribution service with time

  20. Improved Load Distribution for Load Rating of Low-Fill Box Structures

    E-Print Network [OSTI]

    Acharya, Raju

    2012-12-31T23:59:59.000Z

    . The distribution of live loads on the top slab of a box culvert plays a major role in determining the rating factor of the culvert. The current AASHTO guidelines do not consider the effects of pavements present above the fill while determining the load distribution...

  1. Modeling and evaluating the performance of Brillouin distributed optical fiber sensors

    E-Print Network [OSTI]

    Dalang, Robert C.

    Modeling and evaluating the performance of Brillouin distributed optical fiber sensors Marcelo A analysis of the key factors impacting on the performance of Brillouin distributed optical fiber sensors of America OCIS codes: (060.2310) Fiber optics; (060.2370) Fiber optics sensors; (290.5900) Scattering

  2. HYBRID CONTROL OF DISTRIBUTED GENERATORS CONNECTED TO WEAK RURAL NETWORKS TO MITIGATE VOLTAGE VARIATION

    E-Print Network [OSTI]

    Harrison, Gareth

    thermal power plants will increase the total and proportion of capacity of Distributed Generation (DG@iee.org; Robin.Wallace@ed.ac.uk ABSTRACT Distributed generators are normally operated in automatic power factor-constrained bi- directional power flow may cause unacceptable voltage fluctuations that would cause generator

  3. Distributed Image-Based 3-D Localization of Camera Sensor Networks Roberto Tron and Rene Vidal

    E-Print Network [OSTI]

    Distributed Image-Based 3-D Localization of Camera Sensor Networks Roberto Tron and Ren´e Vidal Abstract-- We consider the problem of distributed estimation of the poses of N cameras in a camera sensor network using image measurements only. The relative rotation and translation (up to a scale factor

  4. QUALIFICATION OF A TRULY DISTRIBUTED FIBER OPTIC TECHNIQUE FOR STRAIN AND TEMPERATURE MEASUREMENTS IN CONCRETE STRUCTURES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ) and insensitive to electromagnetic fields. Thanks to the low attenuation of the transmitted light signal monitoring is a key factor in life cycle management of infrastructures. Truly distributed fiber optic sensors experiments seem very promising since measurements performed with distributed sensing systems are found

  5. Performance analysis of parallel supernodal sparse LU factorization

    SciTech Connect (OSTI)

    Grigori, Laura; Li, Xiaoye S.

    2004-02-05T23:59:59.000Z

    We investigate performance characteristics for the LU factorization of large matrices with various sparsity patterns. We consider supernodal right-looking parallel factorization on a bi-dimensional grid of processors, making use of static pivoting. We develop a performance model and we validate it using the implementation in SuperLU-DIST, the real matrices and the IBM Power3 machine at NERSC. We use this model to obtain performance bounds on parallel computers, to perform scalability analysis and to identify performance bottlenecks. We also discuss the role of load balance and data distribution in this approach.

  6. Automated distribution scheme speeds service restoration

    SciTech Connect (OSTI)

    Atwell, E. [Lakeland Electric and Water, FL (United States)] [Lakeland Electric and Water, FL (United States); Gamvrelis, T. [Harris Canada, Inc., Calgary, Alberta (Canada). Control Div.] [Harris Canada, Inc., Calgary, Alberta (Canada). Control Div.; Kearns, D. [S and C Electric Co., Chicago, IL (United States)] [S and C Electric Co., Chicago, IL (United States); Landman, R. [H and L Instruments, North Hampton, NH (United States)] [H and L Instruments, North Hampton, NH (United States)

    1996-01-01T23:59:59.000Z

    This article describes an automated distribution scheme that met Lakeland Electric requirements for an automated scheme that would restore power to a major customer in less than 60 seconds. In January 1993, Lakeland Electric and Water (LEW) took on the design and construction of a new 12.47-kV automated distribution system for the Publix Supermarket Industrial complex. The industrial complex in Lakeland, Florida, totals 2 million square feet and houses a dairy processing plant, bakery, produce plant, deli plant, data processing facility for Publix`s entire retail network, purchasing department, as well as several maintenance facilities. The retail chain is LEW`s largest customer with a peak demand of 15.5 MW and a load factor of 81%. Publix`s rapid expansion plan has placed a great deal of pressure on this facility to perform at peak level with no interruptions of product flow. The task at hand was to provide Publix with a state-of-the-art, automated, distribution system built to withstand the inherent weather-related situations in central Florida, lightning and hurricanes.

  7. Distributed road assessment system

    DOE Patents [OSTI]

    Beer, N. Reginald; Paglieroni, David W

    2014-03-25T23:59:59.000Z

    A system that detects damage on or below the surface of a paved structure or pavement is provided. A distributed road assessment system includes road assessment pods and a road assessment server. Each road assessment pod includes a ground-penetrating radar antenna array and a detection system that detects road damage from the return signals as the vehicle on which the pod is mounted travels down a road. Each road assessment pod transmits to the road assessment server occurrence information describing each occurrence of road damage that is newly detected on a current scan of a road. The road assessment server maintains a road damage database of occurrence information describing the previously detected occurrences of road damage. After the road assessment server receives occurrence information for newly detected occurrences of road damage for a portion of a road, the road assessment server determines which newly detected occurrences correspond to which previously detected occurrences of road damage.

  8. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index 2012 JCR Science Edition Journal: Applications of Mathematics Mark Journal Title ISSN Total- life APPL MATH-CZECH 0862-7940 240 0.222 0.549 0.054 37 7.3 >10.0 Cited Journal Citing Journal Source

  9. Phylogenetic Distribution of Potential Cellulases in Bacteria

    E-Print Network [OSTI]

    Berlemont, R.; Martiny, A. C

    2012-01-01T23:59:59.000Z

    Phylogenetic Distribution of Potential Cellulases incontent/79/5/1545 Phylogenetic Distribution of Potential3, 4). Thus, the phylogenetic distribution of en- zyme genes

  10. Factors influencing quantitative liquid (scanning) transmission...

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

    Factors influencing quantitative liquid (scanning) transmission electron microscopy. Factors influencing quantitative liquid (scanning) transmission electron microscopy. Abstract:...

  11. Weibel instability with nonextensive distribution

    SciTech Connect (OSTI)

    Qiu, Hui-Bin; Liu, Shi-Bing [Strong-field and Ultrafast Photonics Lab, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124 (China)] [Strong-field and Ultrafast Photonics Lab, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124 (China)

    2013-10-15T23:59:59.000Z

    Weibel instability in plasma, where the ion distribution is isotropic and the electron component of the plasma possesses the anisotropic temperature distribution, is investigated based on the kinetic theory in context of nonextensive statistics mechanics. The instability growth rate is shown to be dependent on the nonextensive parameters of both electron and ion, and in the extensive limit, the result in Maxwellian distribution plasma is recovered. The instability growth rate is found to be enhanced as the nonextensive parameter of electron increases.

  12. Dynamics and length distribution of microtubules under force and confinement

    E-Print Network [OSTI]

    Björn Zelinski; Nina Müller; Jan Kierfeld

    2012-12-14T23:59:59.000Z

    We investigate the microtubule polymerization dynamics with catastrophe and rescue events for three different confinement scenarios, which mimic typical cellular environments: (i) The microtubule is confined by rigid and fixed walls, (ii) it grows under constant force, and (iii) it grows against an elastic obstacle with a linearly increasing force. We use realistic catastrophe models and analyze the microtubule dynamics, the resulting microtubule length distributions, and force generation by stochastic and mean field calculations; in addition, we perform stochastic simulations. We also investigate the force dynamics if growth parameters are perturbed in dilution experiments. Finally, we show the robustness of our results against changes of catastrophe models and load distribution factors.

  13. Distributed Merge Trees

    SciTech Connect (OSTI)

    Morozov, Dmitriy; Weber, Gunther

    2013-01-08T23:59:59.000Z

    Improved simulations and sensors are producing datasets whose increasing complexity exhausts our ability to visualize and comprehend them directly. To cope with this problem, we can detect and extract significant features in the data and use them as the basis for subsequent analysis. Topological methods are valuable in this context because they provide robust and general feature definitions. As the growth of serial computational power has stalled, data analysis is becoming increasingly dependent on massively parallel machines. To satisfy the computational demand created by complex datasets, algorithms need to effectively utilize these computer architectures. The main strength of topological methods, their emphasis on global information, turns into an obstacle during parallelization. We present two approaches to alleviate this problem. We develop a distributed representation of the merge tree that avoids computing the global tree on a single processor and lets us parallelize subsequent queries. To account for the increasing number of cores per processor, we develop a new data structure that lets us take advantage of multiple shared-memory cores to parallelize the work on a single node. Finally, we present experiments that illustrate the strengths of our approach as well as help identify future challenges.

  14. Technical Potential for Local Distributed

    E-Print Network [OSTI]

    the impact of high penetrations of solar PV on wholesale power markets (energy and capacity), since large amounts of distributed solar PV could decrease wholesale power prices

  15. Distributed storage with communication costs

    E-Print Network [OSTI]

    Armstrong, Craig Kenneth

    2011-01-01T23:59:59.000Z

    5 Introduction to Coding for Distributed Storage The Repairflow graph for 1 repair with varying storage capac- itythe Capacity of Storage Nodes . . . 4.1 Characterizing

  16. Sandia Energy - Distributed Energy Resources

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

    volatile than ever before, making frequency regulation, voltage regulation, and power balancing operations more strenuous for grid operators. A distributed energy storage unit...

  17. DISTRIBUTED GENERATION AND COGENERATION POLICY

    E-Print Network [OSTI]

    Director EFFICIENCY, RENEWABLES & DEMAND ANALYSIS DIVISION B.B. Blevins Executive Director DISCLAIMER capacity targets. KEYWORDS Distributed generation, cogeneration, photovoltaics, wind, biomass, combined

  18. AGENDA: PETROLEUM PRODUCT TRANSMISSION & DISTRIBUTION

    Broader source: Energy.gov [DOE]

    The agenda for the Quadrennial Energy Review (QER) public stakeholder meeting in New Orleans on petroleum product transmission, distribution, and storage.

  19. Observation and Control for Debugging Distributed Computations

    E-Print Network [OSTI]

    Garg, Vijay

    Observation and Control for Debugging Distributed Computations Vijay K. Garg \\Lambda Parallel and Distributed Systems Laboratory, Electrical and Computer Engineering Department The University of Texas for observing and controlling a distributed computation and its applications to distributed debugging

  20. Observation and Control for Debugging Distributed Computations

    E-Print Network [OSTI]

    Garg, Vijay

    Observation and Control for Debugging Distributed Computations Vijay K. Garg Parallel and Distributed Systems Laboratory, Electrical and Computer Engineering Department The University of Texas for observing and controlling a distributed computation and its applications to distributed debugging

  1. Distributed DBMS Page 4. 1 I Introduction

    E-Print Network [OSTI]

    Chen, Yangjun

    Distributed DBMS Page 4. 1 Outline I Introduction I Background Distributed DBMS Architecture Datalogical Architecture Implementation Alternatives Component Architecture Distributed DBMS Architecture Management Parallel Database Systems Distributed Object DBMS Database Interoperability Current Issues #12

  2. Fusion barrier distributions in systems with finite excitation energy

    E-Print Network [OSTI]

    K. Hagino; N. Takigawa; A. B. Balantekin

    1997-06-24T23:59:59.000Z

    Eigen-channel approach to heavy-ion fusion reactions is exact only when the excitation energy of the intrinsic motion is zero. In order to take into account effects of finite excitation energy, we introduce an energy dependence to weight factors in the eigen-channel approximation. Using two channel problem, we show that the weight factors are slowly changing functions of incident energy. This suggests that the concept of the fusion barrier distribution still holds to a good approximation even when the excitation energy of the intrinsic motion is finite. A transition to the adiabatic tunneling, where the coupling leads to a static potential renormalization, is also discussed.

  3. Distributed Generation Operational Reliability, Executive Summary...

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

    2004 This report summarizes the results of the project, "Distributed Generation Market Transformation Tools: Distributed Generation Reliability and Availability Database,"...

  4. Photoelectron Angular Distribution and Molecular Structure in...

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

    Angular Distribution and Molecular Structure in Multiply Charged Anions. Photoelectron Angular Distribution and Molecular Structure in Multiply Charged Anions. Abstract:...

  5. Risk factors for equine laminitis

    E-Print Network [OSTI]

    Polzer, John Patrick

    1995-01-01T23:59:59.000Z

    logistic regression to assess age, breed, sex, and seasonality as risk factors for equine laminitis. There were 70 acute cases, 183 chronic cases, and 779 controls. No statistical association was found between age, breed, sex, or seasonality...

  6. Electrical and Production Load Factors 

    E-Print Network [OSTI]

    Sen, Tapajyoti

    2010-07-14T23:59:59.000Z

    Load factors are an important simplification of electrical energy use data and depend on the ratio of average demand to peak demand. Based on operating hours of a facility they serve as an important benchmarking tool for ...

  7. Factors Affecting Option Premium Values

    E-Print Network [OSTI]

    Johnson, Jason; Smith, Jackie; Dhuyvetter, Kevin C.; Waller, Mark L.

    1999-06-23T23:59:59.000Z

    Factors Affecting Option Premium Values Jason Johnson, Jackie Smith, Kevin Dhuyvetter and Mark Waller* Put Options Hedging in the futures market with options is much like buying an insurance policy to protect commodity sellers against declining...

  8. Electrical and Production Load Factors

    E-Print Network [OSTI]

    Sen, Tapajyoti

    2010-07-14T23:59:59.000Z

    Load factors are an important simplification of electrical energy use data and depend on the ratio of average demand to peak demand. Based on operating hours of a facility they serve as an important benchmarking tool for the industrial sector...

  9. Integer factorization is in P

    E-Print Network [OSTI]

    owner

    2014-04-07T23:59:59.000Z

    can be solved by a deterministic Turing machine in polynomial time(see e.g.. Cormen et al. (2009)). Theorem 5. Integer factorization is in FP. Algorithm 2 can be ...

  10. Automatic Test Factoring for Java

    E-Print Network [OSTI]

    Saff, David

    2005-06-08T23:59:59.000Z

    Test factoring creates fast, focused unit tests from slow system-widetests; each new unit test exercises only a subset of the functionalityexercised by the system test. Augmenting a test suite with factoredunit tests ...

  11. Human Factors of Reporting Systems

    E-Print Network [OSTI]

    Johnson, C.W.

    Johnson,C.W. P. Carayon (ed.), A Handbook of Human Factors and Ergonomics in Healthcare and Patient Safety, Lawrence Erlbaum, London, UK. pp 715-750 Lawrence Erlbaum Associates

  12. Radiant-interchange configuration factors

    E-Print Network [OSTI]

    Reddin, Thomas Edward

    1965-01-01T23:59:59.000Z

    an important role in any situation involving radiant interchange. The engineer desiring to compute the radiant heat transfer in a system is usually discouraged from performing more than a superficial estimation because of the excessive amount of time... Monitor System using the Fortran IV Compiler and the Macro Assembly Program. Listings of the programs appear in the appendices. CHAPTER II THE GEOMETRY OF THE BLACK BODY CONFIGURATION FACTOR 2. 1 Derivation of the Configuration Factor To evaluate...

  13. The nuclear fusion reaction rate based on relativistic equilibrium velocity distribution

    E-Print Network [OSTI]

    Jian-Miin Liu

    2002-10-20T23:59:59.000Z

    The Coulomb barrier is in general much higher than thermal energy. Nuclear fusion reactions occur only among few protons and nuclei with higher relative energies than Coulomb barrier. It is the equilibrium velocity distribution of these high-energy protons and nuclei that participates in determining the rate of nuclear fusion reactions. In the circumstance it is inappropriate to use the Maxwellian velocity distribution for calculating the nuclear fusion reaction rate. We use the relativistic equilibrium velocity distribution for this purpose. The rate based on the relativistic equilibrium velocity distribution has a reduction factor with respect to that based on the Maxwellian distribution, which factor depends on the temperature, reduced mass and atomic numbers of the studied nuclear fusion reactions. This signifies much to the solar neutrino problem.

  14. Incentivizing Distributed Solar: Best Practices (Presentation)

    SciTech Connect (OSTI)

    Bird, L.; Reger, A.

    2013-06-01T23:59:59.000Z

    The presentation discussed findings of a recent NREL technical report on best practices for designing and implementing incentives for small and mid-sized residential and commercial distributed solar energy projects. Topics covered included: factors to consider in setting and modifying incentive levels over time, differentiating incentives to encourage various market segments, and administrative issues such as providing equitable access to incentives and customer protection. In addition, the presentation explored how incentive programs can be designed to respond to changing market conditions while attempting to provide a longer-term and stable environment for the solar industry. The findings of the report were based on interviews with program administrators, regulators, and industry representatives as well as data from numerous incentive programs nationally, particularly the largest and longest-running programs.

  15. Visualizations of Spatial Distribution Functions

    E-Print Network [OSTI]

    Petta, Jason

    number. - Determines 3D structure around a chosen molecule - The SDF gives radial and angular distribution - to study the SDF of water and hydronium around sulfonate group and side chain. Spatial Distribution Function (SDF) #12;3D Isodensity Surfaces - points around atom A where it's equally probable

  16. Quality monitored distributed voting system

    DOE Patents [OSTI]

    Skogmo, D.

    1997-03-18T23:59:59.000Z

    A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system. 6 figs.

  17. Quality monitored distributed voting system

    DOE Patents [OSTI]

    Skogmo, David (Albuquerque, NM)

    1997-01-01T23:59:59.000Z

    A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system.

  18. DISTRIBUTED SHORTESTPATH PROTOCOLS TIMEDEPENDENT NETWORKS

    E-Print Network [OSTI]

    Orda, Ariel

    DISTRIBUTED SHORTEST­PATH PROTOCOLS for TIME­DEPENDENT NETWORKS Ariel Orda Raphael Rom+ Department and the dynamic behavior of networks, since a distributed solution enables constant tracking of changes 32000 October 1992 Revised May 1994, October 1995 ABSTRACT This paper addresses algorithms for networks

  19. Test of two new parameterizations of the Generalized Parton Distribution $H$

    E-Print Network [OSTI]

    C. Mezrag; H. Moutarde; F. Sabatié

    2013-04-29T23:59:59.000Z

    In 2011 Radyushkin outlined the practical implementation of the One-Component Double Distribution formalism in realistic Generalized Parton Distribution models. We compare the One-Component Double Distribution framework to the standard one and compute Deeply Virtual Compton Scattering observables for both. In particular the new implementation is more flexible, offering a greater range of variation of the real and imaginary parts of the associated Compton Form Factor while still allowing to recover results similar to the classical approach. Moreover the polynomiality property is satisfied up to the highest order. Although the comparison to experimental data may be improved, the One-Component Double Distribution modeling is thus an attractive alternative.

  20. Distribution of Clokey's Eggvetch

    SciTech Connect (OSTI)

    David C. Anderson

    1998-12-01T23:59:59.000Z

    The Environment, Safety and Health Division of the U.S. Department of Energy, Nevada Operations Office implements the Ecological Monitoring and Compliance Program on the Nevada Test Site (NTS). This program ensures compliance with applicable environmental laws and regulations, delineates and describes NTS ecosystems, and provides ecological information for predicting and evaluating potential impacts of proposed projects on those ecosystems. Over the last several decades, has taken an active role in providing information on the tatus of plant species proposed for protection under the Endangered Species Act(ESA). One such species is Clokey's eggvetch (Astragalus oophorus var. clokeyanus), which is a candidate species under the listing guidelines of the ESA. Surveys for this species were conducted on the NTS in 1996, 1997, and 1998. Field surveys focused on potential habitat for this species in the southern Belted range and expanded to other areas with similar habitat. Over 30 survey day s were completed; five survey days in 1996, 25 survey days in 1997, and three survey days in 1998. Clokey's eggvetch was located at several sites in the southern Belted Range. It was found through much of the northern section of Kawich Canyon, one site at the head of Gritty Gulch, and a rather extensive location in Lambs Canyon. It was also located further south at Captain Jack Springs in the Eleana Range, in much of Falcon Canyon and around Echo Peak on Pahute Mesa, and was also found in the Timber and Shoshone Mountains. Overall, the locations of Clokey's eggvetch on the NTS appears to form a distinct bridge between populations of the species located further north in the Belted and Kawich Ranges and the population located in the Spring Mountains. Clokey's eggvetch was commonly found along washes and small draws, and typically in sandy loam soils with a covering of light tuffaceous rock. It occurs primarily above 1830 meters (6000 feet) in association with single-leaf pinyon (Pinus monophylla), Utah juniper (Juniperus osteosperma), and big sagebrush (Artemisia tridentata ssp. tridentata). Overall, the populations of Clokey's eggvetch on the NTS appear to be vigorous and do not appear threatened. It is estimated that there are approximately 2300 plants on the NTS. It should be considered as a species of concern because of its localized distribution, but it does not appear to warrant protection under the ESA.

  1. Alternative Export - Wheat Distribution Systems for the Texas - Oklahoma Panhandle.

    E-Print Network [OSTI]

    Fuller, Stephen W.; Shanmugham C.V.

    1980-01-01T23:59:59.000Z

    .......................... and Port-Terminal Costs 9 Impacts of Alternative Distribution Systems Cost of Upgrading Country Elevators to Subterminals. . 9 O n Marketing-System Participants.. ............... 19 ............................................. Commercial T uck cost... be neces- sary to upgrade country elevators into subterminals. In which case, a potential subterminal organization would be at a relative cost disadvantage when compared to the Midwest. An additional factor is the region's relatively low density...

  2. Security proof of practical quantum key distribution schemes

    E-Print Network [OSTI]

    Yodai Watanabe

    2005-06-29T23:59:59.000Z

    This paper provides a security proof of the Bennett-Brassard (BB84) quantum key distribution protocol in practical implementation. To prove the security, it is not assumed that defects in the devices are absorbed into an adversary's attack. In fact, the only assumption in the proof is that the source is characterized. The proof is performed by lower-bounding adversary's Renyi entropy about the key before privacy amplification. The bound reveals the leading factors reducing the key generation rate.

  3. Distribution and Abundance Patterns of Spiders Inhabiting Cotton in Texas.

    E-Print Network [OSTI]

    Dean, D.A.; Sterling, W.L.

    1987-01-01T23:59:59.000Z

    . L. Sterling Department of Entomology Texas A&M University Abstract Patterns of the distribution and abundance of spiders were determined in the major cotton growing areas of Texas during 1982-83. M isumenops spp., Oxyopes saiticus Hentz... to predict this neutrality is important since spiders could then be eliminated as an important factor in predicting the dynamics of other arthropods. The cotton fleahopper (Pseudatomoscelis seriatus [Reuter]) model (Hartstack and Sterling 1986) uses...

  4. Distribution System Voltage Regulation by Distributed Energy Resources

    SciTech Connect (OSTI)

    Ceylan, Oguzhan [ORNL; Liu, Guodong [ORNL; Xu, Yan [ORNL; Tomsovic, Kevin [University of Tennessee, Knoxville (UTK)

    2014-01-01T23:59:59.000Z

    This paper proposes a control method to regulate voltages in 3 phase unbalanced electrical distribution systems. A constrained optimization problem to minimize voltage deviations and maximize distributed energy resource (DER) active power output is solved by harmony search algorithm. IEEE 13 Bus Distribution Test System was modified to test three different cases: a) only voltage regulator controlled system b) only DER controlled system and c) both voltage regulator and DER controlled system. The simulation results show that systems with both voltage regulators and DER control provide better voltage profile.

  5. Power-aware applications for scientific cluster and distributed computing

    E-Print Network [OSTI]

    Abdurachmanov, David; Eulisse, Giulio; Grosso, Paola; Hillegas, Curtis; Holzman, Burt; Klous, Sander; Knight, Robert; Muzaffar, Shahzad

    2014-01-01T23:59:59.000Z

    The aggregate power use of computing hardware is an important cost factor in scientific cluster and distributed computing systems. The Worldwide LHC Computing Grid (WLCG) is a major example of such a distributed computing system, used primarily for high throughput computing (HTC) applications. It has a computing capacity and power consumption rivaling that of the largest supercomputers. The computing capacity required from this system is also expected to grow over the next decade. Optimizing the power utilization and cost of such systems is thus of great interest. A number of trends currently underway will provide new opportunities for power-aware optimizations. We discuss how power-aware software applications and scheduling might be used to reduce power consumption, both as autonomous entities and as part of a (globally) distributed system. As concrete examples of computing centers we provide information on the large HEP-focused Tier-1 at FNAL, and the Tigress High Performance Computing Center at Princeton U...

  6. A reliability assessment methodology for distribution systems with distributed generation 

    E-Print Network [OSTI]

    Duttagupta, Suchismita Sujaya

    2006-08-16T23:59:59.000Z

    Reliability assessment is of primary importance in designing and planning distribution systems that operate in an economic manner with minimal interruption of customer loads. With the advances in renewable energy sources, ...

  7. The use of a distributed hydrologic model to predict dynamic landslide susceptibility for a humid basin in Puerto Rico

    E-Print Network [OSTI]

    Kamal, Sameer A. (Sameer Ahmed)

    2009-01-01T23:59:59.000Z

    This thesis describes the use of a distributed hydrology model in conjunction with a Factor of Safety (FS) algorithm to predict dynamic landslide susceptibility for a humid basin in Puerto Rico. The Mameyes basin, located ...

  8. Relativistic equilibrium velocity distribution, nuclear fusion reaction rate and the solar neutrino problem

    E-Print Network [OSTI]

    Jian-Miin Liu

    2003-07-07T23:59:59.000Z

    In solar interior, it is the equilibrium velocity distribution of few high-energy protons and nuclei that participates in determining nuclear fusion reaction rates. So, it is inappropriate to use the Maxwellian velocity distribution to calculate the rates of solar nuclear fusion reactions. We have to use the relativistic equilibrium velocity distribution for the purpose. The nuclear fusion reaction rate based on the relativistic equilibrium velocity distribution has a reduction factor with respect to that based on the Maxwellian distribution. The reduction factor depends on the temperature, reduced mass and atomic numbers of the studied nuclear fusion reactions, in other words, it varies with the sort of neutrinos. Substituting the relativistic equilibrium velocity distribution for the Maxwellian distribution is not important for the calculation of solar sound speeds. The relativistic equilibrium velocity distribution, if adopted in standard solar models, will lower solar neutrino fluxes and change solar neutrino energy spectra but maintain solar sound speeds. This velocity distribution is possibly a solution to the solar neutrino problem.

  9. A prototype Distributed Audit System

    SciTech Connect (OSTI)

    Banning, D.L. [Sparta, Inc., El Segundo, CA (United States)

    1993-08-01T23:59:59.000Z

    Security auditing systems are used to detect and assess unauthorized or abusive system usage. Historically, security audits were confined to a single computer system. Recent work examines ways of extending auditing to include heterogeneous groups of computers (distributed system). This paper describes the design and prototype development of a Distributed Audit System (DAS) which was developed with funding received from Lawrence Livermore Laboratory and through the Master`s thesis effort performed by the author at California State University, Long Beach. The DAS is intended to provide collection, transfer, and control of audit data on distributed, heterogeneous hosts.

  10. 2013 Distributed Wind Market Report

    SciTech Connect (OSTI)

    Orrell, Alice C.; Rhoads-Weaver, H. E.; Flowers, Larry T.; Gagne, Matthew N.; Pro, Boyd H.; Foster, Nikolas AF

    2014-08-20T23:59:59.000Z

    The purpose of this report is to quantify and summarize the 2013 U.S. distributed wind market to help plan and guide future investments and decisions by industry stakeholders, utilities, state and federal agencies, and other interested parties.

  11. Distribution of neutron resonance widths

    E-Print Network [OSTI]

    Hans A. Weidenmueller

    2011-10-28T23:59:59.000Z

    Recent data on neutron resonance widths indicate disagreement with the Porter-Thomas distribution (PTD). I discuss the theoretical arguments for the PTD, possible theoretical modifications, and I summarize the experimantal evidence.

  12. Distribution ICategory: General Reactor Technology

    E-Print Network [OSTI]

    Shlyakhter, Ilya

    --- Distribution ICategory: General Reactor Technology (UC-520) ANl-92/23 AR(;ONNE NATIONAL, progressively by Huygens, Maxwell and Roentgen, mankind has learned to observe it, measure it, control it

  13. Distributed optical fiber vibration sensing 

    E-Print Network [OSTI]

    Yu, Hui

    2001-01-01T23:59:59.000Z

    This thesis presents a distributed optical fiber vibration sensor. The purpose of this sensing system is to monitor, in real time, the status of railcars by burying an optical fiber underground beside the rails. Using a coherent homodyne technique...

  14. Modeling hydrogen fuel distribution infrastructure

    E-Print Network [OSTI]

    Pulido, Jon R. (Jon Ramon), 1974-

    2004-01-01T23:59:59.000Z

    This thesis' fundamental research question is to evaluate the structure of the hydrogen production, distribution, and dispensing infrastructure under various scenarios and to discover if any trends become apparent after ...

  15. Distributed control of coded networks

    E-Print Network [OSTI]

    Zhao, Fang, Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    The introduction of network coding has the potential to revolutionize the way people operate networks. For the benefits of network coding to be realized, distributed solutions are needed for various network problems. In ...

  16. From Logical to Distributional Models

    E-Print Network [OSTI]

    Anne Preller

    2014-12-30T23:59:59.000Z

    The paper relates two variants of semantic models for natural language, logical functional models and compositional distributional vector space models, by transferring the logic and reasoning from the logical to the distributional models. The geometrical operations of quantum logic are reformulated as algebraic operations on vectors. A map from functional models to vector space models makes it possible to compare the meaning of sentences word by word.

  17. Generalized parton distributions in nuclei

    SciTech Connect (OSTI)

    Vadim Guzey

    2009-12-01T23:59:59.000Z

    Generalized parton distributions (GPDs) of nuclei describe the distribution of quarks and gluons in nuclei probed in hard exclusive reactions, such as e.g. deeply virtual Compton scattering (DVCS). Nuclear GPDs and nuclear DVCS allow us to study new aspects of many traditional nuclear effects (nuclear shadowing, EMC effect, medium modifications of the bound nucleons) as well as to access novel nuclear effects. In my talk, I review recent theoretical progress in the area of nuclear GPDs.

  18. Optimization Online - Integer Factorization is in P

    E-Print Network [OSTI]

    Yuly Shipilevsky

    2012-08-31T23:59:59.000Z

    Aug 31, 2012 ... Integer Factorization is in P. Yuly Shipilevsky (yulysh2000 ***at*** yahoo.ca). Abstract: A polynomial-time algorithm for integer factorization, ...

  19. Posters 535 ARCHITECTURAL CONSIDERATIONS WITH DISTRIBUTED

    E-Print Network [OSTI]

    Bryant, Barrett R.

    Posters 535 ARCHITECTURAL CONSIDERATIONS WITH DISTRIBUTED COMPUTING Yibing Wang, Robert M. Hyatt understand distributed systems as a collection of distributed computation resources that work together as one but powerful computers that make it possible to use distributed commodity computers to facilitate distributed

  20. Distributed DBMS Page 5. 1 I Introduction

    E-Print Network [OSTI]

    Chen, Yangjun

    Distributed DBMS Page 5. 1 Outline I Introduction I Background I Distributed DBMS Architecture Distributed Transaction Management Parallel Database Systems Distributed Object DBMS Database Interoperability Current Issues #12;Distributed DBMS Page 5. 2 Design Problem I In the general setting : Making

  1. Transcription factor-based biosensor

    DOE Patents [OSTI]

    2013-10-08T23:59:59.000Z

    The present invention provides for a system comprising a BmoR transcription factor, a .sigma..sup.54-RNA polymerase, and a pBMO promoter operatively linked to a reporter gene, wherein the pBMO promoter is capable of expression of the reporter gene with an activated form of the BmoR and the .sigma..sup.54-RNA polymerase.

  2. Exploring Distributed Energy Alternatives to Electrical Distribution Grid Expansion in Souhern California Edison Service Territory

    SciTech Connect (OSTI)

    Stovall, Therese K [ORNL; Kingston, Tim [Gas Technology Institute

    2005-12-01T23:59:59.000Z

    Distributed energy (DE) technologies have received much attention for the energy savings and electric power reliability assurances that may be achieved by their widespread adoption. Fueling the attention have been the desires to globally reduce greenhouse gas emissions and concern about easing power transmission and distribution system capacity limitations and congestion. However, these benefits may come at a cost to the electric utility companies in terms of lost revenue and concerns with interconnection on the distribution system. This study assesses the costs and benefits of DE to both consumers and distribution utilities and expands upon a precursory study done with Detroit Edison (DTE)1, by evaluating the combined impact of DE, energy-efficiency, photovoltaics (a use of solar energy), and demand response that will shape the grid of the future. This study was funded by the U.S. Department of Energy (DOE), Gas Research Institute (GRI), American Electric Power (AEP), and Gas Technology Institute's (GTI) Distributed Energy Collaborative Program (DECP). It focuses on two real Southern California Edison (SCE) circuits, a 13 MW suburban circuit fictitiously named Justice on the Lincoln substation, and an 8 MW rural circuit fictitiously named Prosper on the Washington Substation. The primary objectives of the study were threefold: (1) Evaluate the potential for using advanced energy technologies, including DE, energy-efficiency (EE), demand response, electricity storage, and photovoltaics (PV), to reshape electric load curves by reducing peak demand, for real circuits. (2) Investigate the potential impact on guiding technology deployment and managing operation in a way that benefits both utilities and their customers by: (a) Improving grid load factor for utilities; (b) Reducing energy costs for customers; and (c) Optimizing electric demand growth. (3) Demonstrate benefits by reporting on a recently installed advanced energy system at a utility customer site. This study showed that advanced energy technologies are economical for many customers on the two SCE circuits analyzed, providing certain customers with considerable energy cost savings. Using reasonable assumptions about market penetration, the study showed that adding distributed generation would reduce peak demand on the two circuits enough to defer the need to upgrade circuit capacity. If the DE is optimally targeted, the deferral could economically benefit SCE, with cost savings that outweigh the lost revenues due to lower sales of electricity. To a lesser extent, economically justifiable energy-efficiency, photovoltaic technologies, and demand response could also help defer circuit capacity upgrades by reducing demand.

  3. International Journal of Distributed Sensor Networks Impact Factor 0.727

    E-Print Network [OSTI]

    Vouyioukas, Demosthenes

    to WSN and Smart cities security and privacy · WSN for Smartgrid security · Secure monitoring of urban

  4. A static mapping of sparse Cholesky factorization onto distributed memory architectures

    E-Print Network [OSTI]

    Sustaita, Agapito

    1995-01-01T23:59:59.000Z

    that not all tasks have the same computational workload. The proposed mapping technique makes use of the elimination tree which is derived from the column dependencies in the sparse definite positive input matrix A. The mapping solution presented...

  5. Environmental and Community Factors Influencing the Distribution of Pennisetum setaceum in California

    E-Print Network [OSTI]

    Sweet, Lynn

    2011-01-01T23:59:59.000Z

    and comparison of carbon capture. Materials and Methodsorder to examine carbon capture and conductance differencesdifferences in carbon capture per species. Measurements were

  6. Environmental and Community Factors Influencing the Distribution of Pennisetum setaceum in California

    E-Print Network [OSTI]

    Sweet, Lynn

    2011-01-01T23:59:59.000Z

    accumulating below 10°C and heat stress accumulating aboveDTCS DHCS TTCSA THCSA Heat stress indices TTHS THHS DTHStemperature above which ‘heat stress’ accumulates; THHS (

  7. FACTORS AFFECTING WATER QUALITY AND MACROINVERTEBRATE DISTRIBUTION WITHIN A SMALL BLACK HILLS STREAM

    E-Print Network [OSTI]

    macroinvertebrate fauna was conducted concurrently with a physiochemical investigation on Slate Creek, Pennington detected in Slate Creek from both physiochemical and macroinvertebrate evaluations. The primary sources of disturbance to the Slate Creek study site during the sampling period were landscaping activities within

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

    E-Print Network [OSTI]

    Petersen-Gauthier, Joel

    2013-08-09T23:59:59.000Z

    ) .................................................................................... 120 Figure 5.3 SAP2000 M3 Hinge Properties Used ..................................................... 121 Figure 5.4 Six Steps of Hinge Formation and Failure in Grillage Moment Loading Case 7... using the structural analysis finite element program SAP2000 (Computers and Structures (2012b)). Models were made for the Riverside experimental bridge, the Denison, Texas bridge, and for the Drehersville, Pennsylvania bridge. Figure 1.4 shows...

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

    E-Print Network [OSTI]

    Petersen-Gauthier, Joel

    2013-08-09T23:59:59.000Z

    , an existing slab beam bridge in Denison, Texas will be instrumented and observed for supplementary slab beam behavior data. To predict bridge behavior, computer models of the Riverside experimental bridge and of the Denison field bridge were developed using...

  10. A static mapping of sparse Cholesky factorization onto distributed memory architectures 

    E-Print Network [OSTI]

    Sustaita, Agapito

    1995-01-01T23:59:59.000Z

    that not all tasks have the same computational workload. The proposed mapping technique makes use of the elimination tree which is derived from the column dependencies in the sparse definite positive input matrix A. The mapping solution presented...

  11. Spatiotemporal Distribution of NOx Storage: a Factor Controlling NH3 and

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretaryVideos Solid-State| Department of Energy SpatiallyN2O

  12. The inferred redshift distribution of the faint blue excess

    E-Print Network [OSTI]

    Simon P. Driver; Warrick J. Couch; Steven Phillipps; Rogier A. Windhorst

    1996-05-10T23:59:59.000Z

    We infer the redshift distribution of the faint blue galaxy excess (FBE) at B=23.5 by subtracting the predicted distribution of giant/normal galaxies from the observed N(z) distribution for all types. This is possible because of the recent deep {\\it Hubble Space Telescope} (HST) WFPC2 morphological number counts which have convincingly demonstrated that little evolution of the giant population is seen to B=26.0. The mean redshift of the FBE at B=23.5 is found to be _{FBE}=0.40 +/- 0.07 with upper and lower quartiles defined by z_{0.75}=0.58 +/- 0.05 and z_{0.25}=0.28 +/- 0.05, respectively. We compare this inferred FBE N(z) distribution to the predictions from three generic faint galaxy models: dwarf dominated (no evolution), pure luminosity evolution, and evolving dwarfs. The inferred FBE N(z) distribution strongly supports a hybrid evolving dwarf--rich model wherein a large population of dwarfs present at z=0.5 has subsequently faded to obscurity. The total integrated number density of dwarfs (down to M_{B}=-11) is estimated to be a factor of 20 times greater than that of E---Sc galaxies and the estimated fading to be 1.0 < \\Delta m < 1.4 mags. Thus, the dwarf population is estimated to be responsible for ~30% of the luminosity density locally, rising to ~57% at z=0.5.

  13. Distributed Wind Energy in Idaho

    SciTech Connect (OSTI)

    Gardner, John; Ferguson, James; Ahmed-Zaid, Said; Johnson, Kathryn; Haynes, Todd; Bennett, Keith

    2009-01-31T23:59:59.000Z

    Project Objective: This project is a research and development program aimed at furthering distributed wind technology. In particular, this project addresses some of the barriers to distributed wind energy utilization in Idaho. Background: At its core, the technological challenge inherent in Wind Energy is the transformation of a highly variable form of energy to one which is compatible with the commercial power grid or another useful application. A major economic barrier to the success of distributed wind technology is the relatively high capital investment (and related long payback periods) associated with wind turbines. This project will carry out fundamental research and technology development to address both the technological and economic barriers. � Active drive train control holds the potential to improve the overall efficiency of a turbine system by allowing variable speed turbine operation while ensuring a tight control of generator shaft speed, thus greatly simplifying power conditioning. � Recent blade aerodynamic advancements have been focused on large, utility-scale wind turbine generators (WTGs) as opposed to smaller WTGs designed for distributed generation. Because of Reynolds Number considerations, blade designs do not scale well. Blades which are aerodynamically optimized for distributed-scale WTGs can potentially reduce the cost of electricity by increasing shaft-torque in a given wind speed. � Grid-connected electric generators typically operate at a fixed speed. If a generator were able to economically operate at multiple speeds, it could potentially convert more of the wind�s energy to electricity, thus reducing the cost of electricity. This research directly supports the stated goal of the Wind and Hydropower Technologies Program for Distributed Wind Energy Technology: By 2007, reduce the cost of electricity from distributed wind systems to 10 to 15 cents/kWh in Class 3 wind resources, the same level that is currently achievable in Class 5 winds.

  14. The World Distribution of Household Wealth

    E-Print Network [OSTI]

    DAVIES, JAMES B; Shorrocks, Anthony; Sandstrom, Susanna; WOLFF, EDWARD N

    2007-01-01T23:59:59.000Z

    J. B. (1993). ‘The Distribution of Wealth in Canada’.Estimating the World Distribution of Household Wealth’.Tide: Changes in the Distribution of Wealth in the US, 1989-

  15. Creative cleavages : distributive politics and electoral alignment

    E-Print Network [OSTI]

    Kim, Jiyoon, Ph. D. Massachusetts Institute of Technology

    2005-01-01T23:59:59.000Z

    Distributive politics plays an important role for political elites for their electoral goal. Since the resources that politicians can distribute are limited, they have to decide how to distribute them in order to maximize ...

  16. Distributed Averaging Via Lifted Markov Chains

    E-Print Network [OSTI]

    Jung, Kyomin

    Motivated by applications of distributed linear estimation, distributed control, and distributed optimization, we consider the question of designing linear iterative algorithms for computing the average of numbers in a ...

  17. Constructing Reliable Distributed Communication Systems with CORBA

    E-Print Network [OSTI]

    Schmidt, Douglas C.

    Constructing Reliable Distributed Communication Systems with CORBA Silvano Maffeis Douglas C model to support reliable data- and process- oriented distributed systems that communicate through syn distributed object computing systems with CORBA. First, we examine the question of whether reliable applica

  18. DISTRIBUTED CONNECTIVITY CONTROL OF MOBILE NETWORKS, MARCH 2007. 1 Distributed Connectivity Control

    E-Print Network [OSTI]

    Zavlanos, Michael

    DISTRIBUTED CONNECTIVITY CONTROL OF MOBILE NETWORKS, MARCH 2007. 1 Distributed Connectivity Control of distributed motion algorithms that guarantee connectivity of the overall network. In this paper, we address CONNECTIVITY CONTROL OF MOBILE NETWORKS, MARCH 2007. sufficient for global connectedness. Distributed

  19. On the filling factor of emitting material in the upper atmosphere of Epsilon Eri (K2 V)

    E-Print Network [OSTI]

    S. A. Sim; C. Jordan

    2003-08-28T23:59:59.000Z

    The emission measure distribution in the upper transition region and corona of Epsilon Eri is derived from observed emission line fluxes. Theoretical emission measure distributions are calculated assuming that the radiation losses are balanced by the net conductive flux. We discuss how the area factor of the emitting regions as a function of temperature can be derived from a comparison between these emission measure distributions. It is found that the filling factor varies from ~0.2 in the mid transition region to ~1.0 in the inner corona. The sensitivity of these results to the adopted ion fractions, the iron abundance and other parameters is discussed. The area factors found are qualitatively similar to the observed structure of the solar atmosphere, and can be used to constrain two-component models of the chromosphere. Given further observations, the method could be applied to investigate the trends in filling factors with indicators of stellar activity.

  20. Factors Impacting Decommissioning Costs - 13576

    SciTech Connect (OSTI)

    Kim, Karen; McGrath, Richard [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)] [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)

    2013-07-01T23:59:59.000Z

    The Electric Power Research Institute (EPRI) studied United States experience with decommissioning cost estimates and the factors that impact the actual cost of decommissioning projects. This study gathered available estimated and actual decommissioning costs from eight nuclear power plants in the United States to understand the major components of decommissioning costs. Major costs categories for decommissioning a nuclear power plant are removal costs, radioactive waste costs, staffing costs, and other costs. The technical factors that impact the costs were analyzed based on the plants' decommissioning experiences. Detailed cost breakdowns by major projects and other cost categories from actual power plant decommissioning experiences will be presented. Such information will be useful in planning future decommissioning and designing new plants. (authors)

  1. Distributed Reliable Object-Oriented Programming (DROOP)

    E-Print Network [OSTI]

    Guerraoui, Rachid

    Distributed Reliable Object-Oriented Programming (DROOP) P. Eugster November 3, 2003 Abstract with such failures, coining the term Distributed Reliable Object-Oriented Programming (DROOP). 1 SCOOP

  2. Briefing Memo: Petroleum Product Transmission & Distribution...

    Energy Savers [EERE]

    Briefing Memo: Petroleum Product Transmission & Distribution Briefing Memo: Petroleum Product Transmission & Distribution Click below to download a PDF of the briefing memo....

  3. Structure, Charge Distribution, and Electron Hopping Dynamics...

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

    Charge Distribution, and Electron Hopping Dynamics in Magnetite (Fe3O4) (100) Surfaces from First Principles. Structure, Charge Distribution, and Electron Hopping Dynamics in...

  4. NREL: Technology Deployment - Distributed Generation Interconnection...

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

    Distributed Generation Interconnection Collaborative Become a Member DGIC members are included in quarterly informational meetings and discussions related to distributed PV...

  5. Helping Policymakers Evaluate Distributed Wind Options | Department...

    Energy Savers [EERE]

    distributed wind-wind turbines installed at homes, farms, and busi-nesses. Distributed wind allows Americans to generate their own clean electricity and cut their energy bills,...

  6. Agenda: Natural Gas: Transmission, Storage and Distribution ...

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

    Natural Gas: Transmission, Storage and Distribution Agenda: Natural Gas: Transmission, Storage and Distribution A Public Meeting on the Quadrennial Energy Review, Hosted by the...

  7. Distributed Hydrogen Production from Natural Gas: Independent...

    Energy Savers [EERE]

    Distributed Hydrogen Production from Natural Gas: Independent Review Panel Report Distributed Hydrogen Production from Natural Gas: Independent Review Panel Report Independent...

  8. Measuring Advances in HVAC Distribution System Design

    E-Print Network [OSTI]

    Franconi, E.

    2011-01-01T23:59:59.000Z

    Gabel and Andresen, HVAC Secondary Toolkil. Atlanta: ASHRAE,P_02 Measuring Advances in HVAC Distribution System Designdesign and operation of the HVAC thermal distribution system

  9. Sandia National Laboratories: Distribution Grid Integration

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

    Distribution Grid Integration Recent Sandia Secure, Scalable Microgrid Advanced Controls Research Accomplishments On March 3, 2015, in Capabilities, Distribution Grid Integration,...

  10. Building America Webinar: Ductless Hydronic Distribution Systems...

    Energy Savers [EERE]

    Building America Webinar: Ductless Hydronic Distribution Systems Building America Webinar: Ductless Hydronic Distribution Systems This webinar was presented by research team...

  11. Sandia National Laboratories: Distribution Grid Integration

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

    Distribution Grid Integration ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration, Energy, Energy Surety,...

  12. Factorization at the LHC: From PDFs to Initial State Jets

    E-Print Network [OSTI]

    Iain W. Stewart; Frank J. Tackmann; Wouter J. Waalewijn

    2010-05-26T23:59:59.000Z

    We study proton-(anti)proton collisions at the LHC or Tevatron in the presence of experimental restrictions on the hadronic final state and for generic parton momentum fractions. At the scale Q of the hard interaction, factorization does not yield standard parton distribution functions (PDFs) for the initial state. The measurement restricting the hadronic final state introduces a new scale \\mu_B Xl+l- where X is restricted to have no central jets. We comment on the extension to cases where the hadronic final state contains a certain number of isolated central jets.

  13. Harmonic mean, the Gamma factor and Speed of Light

    E-Print Network [OSTI]

    Chandru Iyer

    2008-11-17T23:59:59.000Z

    The relationship between the harmonic mean and special relativity is concisely elucidated. The arguments in favor and against SRT are explored. It is shown that the ratio of the speed of light to the harmonic mean of the onward and return speeds of light in a moving frame under Newtonian mechanics, when equitably distributed between space and time as a correction, leads to the Lorentz transformation. This correction implies an apparent contraction of objects and time dilation. However, the symmetry of the onward and inverse transformations give a different meaning to the gamma factor

  14. Distribution to Distribution Regression Junier B. Oliva joliva@cs.cmu.edu

    E-Print Network [OSTI]

    Schneider, Jeff

    Distribution to Distribution Regression Junier B. Oliva joliva@cs.cmu.edu Barnab´as P `Distribution to Distribution re- gression' where one is regressing a mapping where both the covariate (inputs) and re- sponse (outputs) are distributions. No pa- rameters on the input or output distributions

  15. Interpretation of models of fundamental ecological niches and species' distributional areas

    E-Print Network [OSTI]

    Soberó n, Jorge

    2005-01-01T23:59:59.000Z

    , realizad niche, geographic distribution The fact that, at certain scales, climatic and physical factors affect profoundly the distributions of species has been known for a very long time. In the last two decades, mathematical techniques designed... to estimate the geographic extent of the “fundamental ecological niche” (FN), or subsets of it, defined mostly in coarse-scale climatic dimensions [the “bioclimatic envelope” or climatic niche (Pearson & Dawson 2003)], have seen increasing use. Although...

  16. Integrated Transmission and Distribution Control

    SciTech Connect (OSTI)

    Kalsi, Karanjit; Fuller, Jason C.; Tuffner, Francis K.; Lian, Jianming; Zhang, Wei; Marinovici, Laurentiu D.; Fisher, Andrew R.; Chassin, Forrest S.; Hauer, Matthew L.

    2013-01-16T23:59:59.000Z

    Distributed, generation, demand response, distributed storage, smart appliances, electric vehicles and renewable energy resources are expected to play a key part in the transformation of the American power system. Control, coordination and compensation of these smart grid assets are inherently interlinked. Advanced control strategies to warrant large-scale penetration of distributed smart grid assets do not currently exist. While many of the smart grid technologies proposed involve assets being deployed at the distribution level, most of the significant benefits accrue at the transmission level. The development of advanced smart grid simulation tools, such as GridLAB-D, has led to a dramatic improvement in the models of smart grid assets available for design and evaluation of smart grid technology. However, one of the main challenges to quantifying the benefits of smart grid assets at the transmission level is the lack of tools and framework for integrating transmission and distribution technologies into a single simulation environment. Furthermore, given the size and complexity of the distribution system, it is crucial to be able to represent the behavior of distributed smart grid assets using reduced-order controllable models and to analyze their impacts on the bulk power system in terms of stability and reliability. The objectives of the project were to: • Develop a simulation environment for integrating transmission and distribution control, • Construct reduced-order controllable models for smart grid assets at the distribution level, • Design and validate closed-loop control strategies for distributed smart grid assets, and • Demonstrate impact of integrating thousands of smart grid assets under closed-loop control demand response strategies on the transmission system. More specifically, GridLAB-D, a distribution system tool, and PowerWorld, a transmission planning tool, are integrated into a single simulation environment. The integrated environment allows the load flow interactions between the bulk power system and end-use loads to be explicitly modeled. Power system interactions are modeled down to time intervals as short as 1-second. Another practical issue is that the size and complexity of typical distribution systems makes direct integration with transmission models computationally intractable. Hence, the focus of the next main task is to develop reduced-order controllable models for some of the smart grid assets. In particular, HVAC units, which are a type of Thermostatically Controlled Loads (TCLs), are considered. The reduced-order modeling approach can be extended to other smart grid assets, like water heaters, PVs and PHEVs. Closed-loop control strategies are designed for a population of HVAC units under realistic conditions. The proposed load controller is fully responsive and achieves the control objective without sacrificing the end-use performance. Finally, using the T&D simulation platform, the benefits to the bulk power system are demonstrated by controlling smart grid assets under different demand response closed-loop control strategies.

  17. Spatial correction factors for YALINA Booster facility loaded with medium and low enriched fuels

    SciTech Connect (OSTI)

    Talamo, A.; Gohar, Y. [Argonne National Laboratory, 9700 S. Cass Ave, Argonne, IL 60439 (United States); Bournos, V.; Fokov, Y.; Kiyavitskaya, H.; Routkovskaya, C. [Joint Inst. for Power and Nuclear Research-Sosny, 99 Academician A.K.Krasin Str, Minsk 220109 (Belarus)

    2012-07-01T23:59:59.000Z

    The Bell and Glasstone spatial correction factor is used in analyses of subcritical assemblies to correct the experimental reactivity as function of the detector position. Besides the detector position, several other parameters affect the correction factor: the energy weighting function of the detector, the detector size, the energy-angle distribution of source neutrons, and the reactivity of the subcritical assembly. This work focuses on the dependency of the correction factor on the detector material and it investigates the YALINA Booster subcritical assembly loaded with medium (36%) and low (10%) enriched fuels. (authors)

  18. Distribution Statement A: Approved for public release; distribution is unlimited.

    E-Print Network [OSTI]

    Prinz, Friedrich B.

    : Approved for public release; distribution is unlimited. AHPCRC, The Army High Performance Computing for the warfighter. High performance computing (HPC) provides significant advantages in designing and characterizing theories and best practices of simulation-based engineering sciences and high performance computing

  19. A distributed accelerated gradient algorithm for distributed model predictive

    E-Print Network [OSTI]

    Como, Giacomo

    of hydro power plants is to manage the available water resources efficiently, while following an optimal is applied to the power reference tracking problem of a hydro power valley (HPV) system. The applied power control, Distributed optimization, Accelerated gradient algorithm, Model predictive control

  20. An analysis of factors contributing to train-involved crashes

    E-Print Network [OSTI]

    Cooner, Scott Allen

    1995-01-01T23:59:59.000Z

    analyzed for the contributing factors. The contributing factors were classified into four categories: railroad factors, environmental factors, roadway factors, and driver/passenger factors. The accident data was analyzed using one and two-way classification...

  1. Medium Effects in Parton Distributions

    SciTech Connect (OSTI)

    William Detmold, Huey-Wen Lin

    2011-12-01T23:59:59.000Z

    A defining experiment of high-energy physics in the 1980s was that of the EMC collaboration where it was first observed that parton distributions in nuclei are non-trivially related to those in the proton. This result implies that the presence of the nuclear medium plays an important role and an understanding of this from QCD has been an important goal ever since Here we investigate analogous, but technically simpler, effects in QCD and examine how the lowest moment of the pion parton distribution is modified by the presence of a Bose-condensed gas of pions or kaons.

  2. Distributed Queuing or Distributed Priority Queuing? On the Design of Cache-Coherence Protocols for Distributed Transactional Memory

    E-Print Network [OSTI]

    Ravindran, Binoy

    Distributed Queuing or Distributed Priority Queuing? On the Design of Cache-Coherence Protocols for Distributed Transactional Memory Bo Zhang ECE Dept., Virginia Tech Blacksburg, VA 24061, USA alexzbzb@vt.edu Binoy Ravindran ECE Dept., Virginia Tech Blacksburg, VA 24061, USA binoy@vt.edu Abstract Distributed

  3. Operational benefits of relaxed axial power distribution control limits

    SciTech Connect (OSTI)

    Kitlan, M.S. Jr.; Miller, R.W.

    1987-01-01T23:59:59.000Z

    Constant axial offset control (CAOC) was developed in the early 1970s in response to lower loss-of-coolant accident-based peaking factor limits. Th CAOC requires control of the axial power distribution within a specified band, typically +/- 5% or +3, -12% axial flux difference (AFD), about a measured target value of AFD. Operational outside of the CAOC limits results in the accumulation of penalty time. One hour of penalty time in any 24-h period is permitted. Although CAOC is sufficient to ensure peaking factor limits are satisfied, operation outside of CAOC limits is beneficial under certain conditions. Allowing a relaxation in CAOC restrictions can be used both to enhance the load follow capability of the plant by allowing control strategies that minimize the boron system duty or increase the return to power capability and to greatly increase the ability to return to power after a plant trip or shutdown. To achieve these benefits, relaxed axial offset control (RAOC) was developed. Other benefits of RAOC include a simplified technical specification and the ability to perform in-core/ex-core calibrations at higher powers. Duke Power Company has benefited in many of these ways by changing from CAOC power distribution limits to RAOC power distribution limits at the McGuire Nuclear Station. One of the chief benefits has been the ability to achieve full power much more quickly following shutdowns of short duration and reactor trips during the last half of the cycle lifetime.

  4. Key Factors for Information Dissemination on Communicating Products and Fixed Databases

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Key Factors for Information Dissemination on Communicating Products and Fixed Databases Sylvain, a multitude of informational vectors take place in such environments like fixed databases or manufactured products on which we are able to em- bed significant proportion of data. By considering distributed

  5. Virtual MISO: Experimental Evaluation of MAC to Network-Scale Factors

    E-Print Network [OSTI]

    Virtual MISO: Experimental Evaluation of MAC to Network-Scale Factors Oscar Bejarano and Edward W-Input Single-Output (vMISO) sys- tems distribute multi-antenna diversity capabilities between a sending and a cooperating node. vMISO has been shown to vastly improve wireless link reliability and bit error rates

  6. Survival curves of heated bacterial spores:1 Effect of environmental factors on Weibull parameters2

    E-Print Network [OSTI]

    Brest, Université de

    be applied for canning process calculations.24 Key words:25 Weibull distribution, Heat treatment pH, recovery1 Survival curves of heated bacterial spores:1 Effect of environmental factors on Weibull heat13 resistance for non-log linear survival curves. One simple model derived from the Weibull14

  7. Form-factor ratio measurement in lambda(+)(c)-]lambda-e(+)nu(e)

    E-Print Network [OSTI]

    Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan

    1995-07-01T23:59:59.000Z

    The angular distributions of the decay Lambda(c)(+) --> Lambda e(+)nu(e) have been studied using the CLEO II detector. By performing a three-dimensional maximum likelihood fit, the form factor ratio R = f(2)/f(1) is ...

  8. Information-Theoretic Deconvolution Approximation of Treatment Effect Distribution

    E-Print Network [OSTI]

    Wu, Ximing; Perloff, Jeffrey M.

    2007-01-01T23:59:59.000Z

    errors (dotted), and normal distribution with identical meanrelations for multimodal distributions of the exponentialwith Supersmooth Distributions. ” Canadian Journal of

  9. Measured Air Distribution Effectiveness for Residential Mechanical Ventilation Systems

    E-Print Network [OSTI]

    Sherman, Max H.

    2008-01-01T23:59:59.000Z

    credit for different air distribution methods can be given.Measured Air Distribution Effectiveness for Residential4   Distribution metric

  10. Distribution:

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling CorpNew 1325.8. (8-89)p,Departtient,of-JAN26 19%

  11. Nonlinear relationships between individual IEQ factors and overall workspace satisfaction

    E-Print Network [OSTI]

    Kim, Jungsoo; de Dear, Richard

    2011-01-01T23:59:59.000Z

    in dissatisfaction. So for Bonus Factors, the absolute valuemarketing literature), (2) Bonus Factors (synonyms include “for occupants’ satisfaction. Bonus Factors: Bonus Factors go

  12. Complex Dynamics Effect on Distributions

    E-Print Network [OSTI]

    Mehmet Tekkoyun

    2009-01-09T23:59:59.000Z

    In this study, Lagrangian and Hamiltonian systems, which are mathematical models of mechanical systems, were introduced on the horizontal and the vertical distributions of tangent and cotangent bundles. Finally, some geometrical and physical results related to Lagrangian and Hamiltonian dynamical systems were deduced.

  13. Distribution Amplitudes of Pseudoscalar Mesons

    E-Print Network [OSTI]

    V. M. Braun; M. Gockeler; R. Horsley; H. Perlt; D. Pleiter; P. E. L. Rakow; G. Schierholz; A. Schiller; W. Schroers; H. Stueben; J. M. Zanotti

    2006-10-09T23:59:59.000Z

    We present results for the first two moments of the distribution amplitudes of pseudoscalar mesons. Using two flavors of non-perturbatively improved clover fermions and non-perturbative renormalization of the matrix elements we perform both chiral and continuum extrapolations and compare with recent results from models and experiments.

  14. Distribution Amplitudes of Vector Mesons

    E-Print Network [OSTI]

    V. M. Braun; D. Brömmel; M. Göckeler; R. Horsley; Y. Nakamura; H. Perlt; D. Pleiter; P. E. L. Rakow; A. Schäfer; G. Schierholz; A. Schiller; W. Schroers; T. Streuer; H. Stüben; J. M. Zanotti

    2007-11-14T23:59:59.000Z

    Results are presented for the lowest moment of the distribution amplitude for the K-star vector meson. Both longitudinal and transverse moments are investigated. We use two flavours of O(a) improved Wilson fermions, together with a non-perturbative renormalisation of the matrix element.

  15. 4, 125149, 2007 A distributed

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - perature model of a first order stream in Luxembourg. A DTS (Distributed Temperature Sensing) fiber optic model presented here. The model calculates the total energy balance including solar radia- tion (with runoff components. The DTS fiber optic is an excellent tool to provide this knowledge. 1 Introduction15

  16. DISTRIBUTED AND COLLABORATIVE SYNTHETIC ENVIRONMENTS

    E-Print Network [OSTI]

    Texas at Austin, University of

    1 DISTRIBUTED AND COLLABORATIVE SYNTHETIC ENVIRONMENTS Chandrajit L. Bajaj and Fausto Bernardini with synthetic environments1,2,3,4,5,6 . A synthetic environment system is generally characterized and the synthetic environment generated by the computer. Several degrees of immersion are possible, ranging from

  17. Distributed Shared State (position paper)

    E-Print Network [OSTI]

    Scott, Michael L.

    computing [10] is as much about finding and accessing remote data repositories as it is about utilizing are distributed not for the sake of parallel speedup, but rather to access peo- ple, data, and devices was supported in part by NSF grants CCR-9988361, CCR- 0204344, CCR-0219848, ECS-0225413, and EIA-0080124

  18. Generalized parton distributions of nuclei

    SciTech Connect (OSTI)

    Guzey, V. [Theory Center, Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States)

    2009-12-17T23:59:59.000Z

    We review recent theoretical results on generalized parton distributions (GPDs) of nuclei, emphasizing the following three roles of nuclear GPDs: (i) complementarity to free proton GPDs, (ii) the enhancement of traditional nuclear effects such nuclear binding, EMC effect, nuclear shadowing, and (iii) an access to novel nuclear effects such as medium modifications of bound nucleons.

  19. Distributed Termination Detection for Dynamic Systems

    E-Print Network [OSTI]

    Dhamdhere, Dhananjay Madhav

    Distributed Termination Detection for Dynamic Systems D. M. Dhamdhere \\Lambda Sridhar R. Iyer E for detecting the termination of a dis­ tributed computation is presented. The algorithm does not require global are provided. Keywords Distributed algorithms, Distributed computation, Distributed termination, Dynamic

  20. Distributed DBMS Page 6. 1 I Introduction

    E-Print Network [OSTI]

    Chen, Yangjun

    Distributed DBMS Page 6. 1 Outline I Introduction I Background I Distributed DBMS Architecture I Parallel Database Systems Distributed Object DBMS Database Interoperability Current Issues #12;Distributed DBMS Page 6. 2 I Involves: View management Security control Integrity control I Objective

  1. Distributed Energy Fuel Cells Electricity Users

    E-Print Network [OSTI]

    Distributed Power Package Unit: Fuel Processing Based On Autothermal Cyclic Reforming · Proton Conducting

  2. Gravitational Field of Fractal Distribution of Particles

    E-Print Network [OSTI]

    Vasily E. Tarasov

    2006-04-24T23:59:59.000Z

    In this paper we consider the gravitational field of fractal distribution of particles. To describe fractal distribution, we use the fractional integrals. The fractional integrals are considered as approximations of integrals on fractals. Using the fractional generalization of the Gauss's law, we consider the simple examples of the fields of homogeneous fractal distribution. The examples of gravitational moments for fractal distribution are considered.

  3. The neutron star mass distribution

    SciTech Connect (OSTI)

    Kiziltan, Bülent [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Kottas, Athanasios; De Yoreo, Maria [Department of Applied Mathematics and Statistics, University of California, Santa Cruz, CA 95064 (United States); Thorsett, Stephen E., E-mail: bkiziltan@cfa.harvard.edu [Department of Astronomy and Astrophysics, University of California and UCO/Lick Observatory, Santa Cruz, CA 95064 (United States)

    2013-11-20T23:59:59.000Z

    In recent years, the number of pulsars with secure mass measurements has increased to a level that allows us to probe the underlying neutron star (NS) mass distribution in detail. We critically review the radio pulsar mass measurements. For the first time, we are able to analyze a sizable population of NSs with a flexible modeling approach that can effectively accommodate a skewed underlying distribution and asymmetric measurement errors. We find that NSs that have evolved through different evolutionary paths reflect distinctive signatures through dissimilar distribution peak and mass cutoff values. NSs in double NS and NS-white dwarf (WD) systems show consistent respective peaks at 1.33 M {sub ?} and 1.55 M {sub ?}, suggesting significant mass accretion (?m ? 0.22 M {sub ?}) has occurred during the spin-up phase. The width of the mass distribution implied by double NS systems is indicative of a tight initial mass function while the inferred mass range is significantly wider for NSs that have gone through recycling. We find a mass cutoff at ?2.1 M {sub ?} for NSs with WD companions, which establishes a firm lower bound for the maximum NS mass. This rules out the majority of strange quark and soft equation of state models as viable configurations for NS matter. The lack of truncation close to the maximum mass cutoff along with the skewed nature of the inferred mass distribution both enforce the suggestion that the 2.1 M {sub ?} limit is set by evolutionary constraints rather than nuclear physics or general relativity, and the existence of rare supermassive NSs is possible.

  4. Dissecting Soft Radiation with Factorization

    E-Print Network [OSTI]

    Iain W. Stewart; Frank J. Tackmann; Wouter J. Waalewijn

    2015-02-10T23:59:59.000Z

    An essential part of high-energy hadronic collisions is the soft hadronic activity that underlies the primary hard interaction. It includes soft radiation from the primary hard partons, secondary multiple parton interactions (MPI), and factorization-violating effects. The invariant mass spectrum of the leading jet in $Z$+jet and $H$+jet events is directly sensitive to these effects, and we use a QCD factorization theorem to predict its dependence on the jet radius $R$, jet $p_T$, jet rapidity, and partonic process for both the perturbative and nonperturbative components of primary soft radiation. We prove that the nonperturbative contributions involve only odd powers of $R$, and the linear $R$ term is universal for quark and gluon jets. The hadronization model in PYTHIA8 agrees well with these properties. The perturbative soft initial state radiation (ISR) has a contribution that depends on the jet area in the same way as the underlying event, but this degeneracy is broken by dependence on the jet $p_T$. The size of this soft ISR contribution is proportional to the color state of the initial partons, yielding the same positive contribution for $gg\\to Hg$ and $gq\\to Zq$, but a negative interference contribution for $q\\bar q\\to Z g$. Hence, measuring these dependencies allows one to separate hadronization, soft ISR, and MPI contributions in the data.

  5. Big Bang Nucleosynthesis with Independent Neutrino Distribution Functions

    E-Print Network [OSTI]

    Christel J. Smith; George M. Fuller; Michael S. Smith

    2008-12-06T23:59:59.000Z

    We have performed new Big Bang Nucleosynthesis calculations which employ arbitrarily-specified, time-dependent neutrino and antineutrino distribution functions for each of up to four neutrino flavors. We self-consistently couple these distributions to the thermodynamics, the expansion rate and scale factor-time/temperature relationship, as well as to all relevant weak, electromagnetic, and strong nuclear reaction processes in the early universe. With this approach, we can treat any scenario in which neutrino or antineutrino spectral distortion might arise. These scenarios might include, for example, decaying particles, active-sterile neutrino oscillations, and active-active neutrino oscillations in the presence of significant lepton numbers. Our calculations allow lepton numbers and sterile neutrinos to be constrained with observationally-determined primordial helium and deuterium abundances. We have modified a standard BBN code to perform these calculations and have made it available to the community.

  6. Distribution Integrity Management Plant (DIMP)

    SciTech Connect (OSTI)

    Gonzales, Jerome F. [Los Alamos National Laboratory

    2012-05-07T23:59:59.000Z

    This document is the distribution integrity management plan (Plan) for the Los Alamos National Laboratory (LANL) Natural Gas Distribution System. This Plan meets the requirements of 49 CFR Part 192, Subpart P Distribution Integrity Management Programs (DIMP) for the LANL Natural Gas Distribution System. This Plan was developed by reviewing records and interviewing LANL personnel. The records consist of the design, construction, operation and maintenance for the LANL Natural Gas Distribution System. The records system for the LANL Natural Gas Distribution System is limited, so the majority of information is based on the judgment of LANL employees; the maintenance crew, the Corrosion Specialist and the Utilities and Infrastructure (UI) Civil Team Leader. The records used in this report are: Pipeline and Hazardous Materials Safety Administration (PHMSA) 7100.1-1, Report of Main and Service Line Inspection, Natural Gas Leak Survey, Gas Leak Response Report, Gas Leak and Repair Report, and Pipe-to-Soil Recordings. The specific elements of knowledge of the infrastructure used to evaluate each threat and prioritize risks are listed in Sections 6 and 7, Threat Evaluation and Risk Prioritization respectively. This Plan addresses additional information needed and a method for gaining that data over time through normal activities. The processes used for the initial assessment of Threat Evaluation and Risk Prioritization are the methods found in the Simple, Handy Risk-based Integrity Management Plan (SHRIMP{trademark}) software package developed by the American Pipeline and Gas Agency (APGA) Security and Integrity Foundation (SIF). SHRIMP{trademark} uses an index model developed by the consultants and advisors of the SIF. Threat assessment is performed using questions developed by the Gas Piping Technology Company (GPTC) as modified and added to by the SHRIMP{trademark} advisors. This Plan is required to be reviewed every 5 years to be continually refined and improved. Records for all piping system installed after the effective date of this Plan will be captured and retained in the UI records documentation system. Primary Utility Asbuilts are maintained by Utilities Mapping (UMAP) and additional records are maintained on the N drive. Engineering Change Notices (ECNs) are stored on the N drive under configuration management and kept up by Utilities and Infrastructure Division Office (UI-DO). Records include, at a minimum, the location where new piping and appurtenances are installed and the material of which they are constructed.

  7. Momentum distributions for 2H(e,e'p)

    SciTech Connect (OSTI)

    Ford, William P. [ODU; Jeschonnek, Sabine [Ohio State University; Van Orden, J. Wallace [ODU, JLAB

    2014-12-01T23:59:59.000Z

    [Background] A primary goal of deuteron electrodisintegration is the possibility of extracting the deuteron momentum distribution. This extraction is inherently fraught with difficulty, as the momentum distribution is not an observable and the extraction relies on theoretical models dependent on other models as input. [Purpose] We present a new method for extracting the momentum distribution which takes into account a wide variety of model inputs thus providing a theoretical uncertainty due to the various model constituents. [Method] The calculations presented here are using a Bethe-Salpeter like formalism with a wide variety of bound state wave functions, form factors, and final state interactions. We present a method to extract the momentum distributions from experimental cross sections, which takes into account the theoretical uncertainty from the various model constituents entering the calculation. [Results] In order to test the extraction pseudo-data was generated, and the extracted "experimental'' distribution, which has theoretical uncertainty from the various model inputs, was compared with the theoretical distribution used to generate the pseudo-data. [Conclusions] In the examples we compared the original distribution was typically within the error band of the extracted distribution. The input wave functions do contain some outliers which are discussed in the text, but at least this procedure can provide an upper bound on the deuteron momentum distribution. Due to the reliance on the theoretical calculation to obtain this quantity any extraction method should account for the theoretical error inherent in these calculations due to model inputs.

  8. Industrial Equipment Demand and Duty Factors

    E-Print Network [OSTI]

    Dooley, E. S.; Heffington, W. M.

    Demand and duty factors have been measured for selected equipment (air compressors, electric furnaces, injection molding machines, centrifugal loads, and others) in industrial plants. Demand factors for heavily loaded air compressors were near 100...

  9. Guidelines for Power Factor Improvement Projects

    E-Print Network [OSTI]

    Massey, G. W.

    Power factor is an indication of electrical system efficiency. Low power factor, or low system efficiency, may be due to one or more causes, including lightly loaded transformers, oversized electric motors, and harmonic-generating non-linear loads...

  10. Cone Penetrometer N Factor Determination Testing Results

    SciTech Connect (OSTI)

    Follett, Jordan R.

    2014-03-05T23:59:59.000Z

    This document contains the results of testing activities to determine the empirical 'N Factor' for the cone penetrometer in kaolin clay simulant. The N Factor is used to releate resistance measurements taken with the cone penetrometer to shear strength.

  11. Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES

    E-Print Network [OSTI]

    M. Guidal; H. Moutarde

    2009-12-04T23:59:59.000Z

    The HERMES collaboration has recently published a set of (correlated) beam charge, beam spin and target spin relative asymmetries for the Deeply Virtual Compton Scattering process. This reaction allows in principle to access the Generalized Parton Distributions of the nucleon. We have fitted, in the QCD leading-order and leading-twist handbag approximation, but in a model independent way, this set of data and we report our results for the extracted Compton Form Factors. In particular, we are able to extract constrains on the $H$ GPD.

  12. Generalized Parton Distributions from Deep Virtual Compton Scattering at CLAS

    E-Print Network [OSTI]

    M. Guidal

    2010-03-01T23:59:59.000Z

    We have analyzed the beam spin asymmetry and the longitudinally polarized target spin asymmetry of the Deep Virtual Compton Scattering process, recently measured by the Jefferson Lab CLAS collaboration. Our aim is to extract information about the Generalized Parton Distributions of the proton. By fitting these data, in a largely model-independent procedure, we are able to extract numerical values for the two Compton Form Factors $H_{Im}$ and $\\tilde{H}_{Im}$ with uncertainties, in average, of the order of 30%.

  13. Parton distributions at the dawn of the LHC

    E-Print Network [OSTI]

    Stefano Forte

    2010-12-06T23:59:59.000Z

    We review basic ideas and recent developments on the determination of the parton substructure of the nucleon, in view of applications to precision hadron collider physics. We review the way information on parton distributions (PDFs) is extracted from the data exploiting QCD factorization, and discuss the current main two approaches to parton determination (Hessian and Monte Carlo) and their use in conjunction with different kinds of parton parametrization. We summarize the way different physical processes can be used to constrain different aspects of PDFs. We discuss the meaning, determination and use of parton uncertainties. We briefly summarize the current state of the art on PDFs for LHC physics.

  14. Enhanced distributed energy resource system

    DOE Patents [OSTI]

    Atcitty, Stanley (Albuquerque, NM); Clark, Nancy H. (Corrales, NM); Boyes, John D. (Albuquerque, NM); Ranade, Satishkumar J. (Las Cruces, NM)

    2007-07-03T23:59:59.000Z

    A power transmission system including a direct current power source electrically connected to a conversion device for converting direct current into alternating current, a conversion device connected to a power distribution system through a junction, an energy storage device capable of producing direct current connected to a converter, where the converter, such as an insulated gate bipolar transistor, converts direct current from an energy storage device into alternating current and supplies the current to the junction and subsequently to the power distribution system. A microprocessor controller, connected to a sampling and feedback module and the converter, determines when the current load is higher than a set threshold value, requiring triggering of the converter to supply supplemental current to the power transmission system.

  15. Money Distributions in Chaotic Economies

    E-Print Network [OSTI]

    Carmen Pellicer-Lostao; Ricardo Lopez-Ruiz

    2009-06-10T23:59:59.000Z

    This paper considers the ideal gas-like model of trading markets, where each individual is identified as a gas molecule that interacts with others trading in elastic or money-conservative collisions. Traditionally this model introduces different rules of random selection and exchange between pair agents. Real economic transactions are complex but obviously non-random. Consequently, unlike this traditional model, this work implements chaotic elements in the evolution of an economic system. In particular, we use a chaotic signal that breaks the natural pairing symmetry $(i,j)\\Leftrightarrow(j,i)$ of a random gas-like model. As a result of that, it is found that a chaotic market like this can reproduce the referenced wealth distributions observed in real economies (the Gamma, Exponential and Pareto distributions).

  16. Antenna structure with distributed strip

    DOE Patents [OSTI]

    Rodenbeck, Christopher T. (Albuquerque, NM)

    2008-10-21T23:59:59.000Z

    An antenna comprises electrical conductors arranged to form a radiating element including a folded line configuration and a distributed strip configuration, where the radiating element is in proximity to a ground conductor. The folded line and the distributed strip can be electrically interconnected and substantially coplanar. The ground conductor can be spaced from, and coplanar to, the radiating element, or can alternatively lie in a plane set at an angle to the radiating element. Embodiments of the antenna include conductor patterns formed on a printed wiring board, having a ground plane, spacedly adjacent to and coplanar with the radiating element. Other embodiments of the antenna comprise a ground plane and radiating element on opposed sides of a printed wiring board. Other embodiments of the antenna comprise conductors that can be arranged as free standing "foils". Other embodiments include antennas that are encapsulated into a package containing the antenna.

  17. Antenna structure with distributed strip

    DOE Patents [OSTI]

    Rodenbeck, Christopher T. (Albuquerque, NM)

    2008-03-18T23:59:59.000Z

    An antenna comprises electrical conductors arranged to form a radiating element including a folded line configuration and a distributed strip configuration, where the radiating element is in proximity to a ground conductor. The folded line and the distributed strip can be electrically interconnected and substantially coplanar. The ground conductor can be spaced from, and coplanar to, the radiating element, or can alternatively lie in a plane set at an angle to the radiating element. Embodiments of the antenna include conductor patterns formed on a printed wiring board, having a ground plane, spacedly adjacent to and coplanar with the radiating element. Other embodiments of the antenna comprise a ground plane and radiating element on opposed sides of a printed wiring board. Other embodiments of the antenna comprise conductors that can be arranged as free standing "foils". Other embodiments include antennas that are encapsulated into a package containing the antenna.

  18. A closedform solution for mapping general distributions to minimal PH distributions

    E-Print Network [OSTI]

    A closed­form solution for mapping general distributions to minimal PH distributions Takayuki Pittsburgh Digital Greenhouse Grant 01­1. #12; Abstract Approximating general distributions by phase­type (PH) distributions is a popular technique in queueing analysis, since the Markovian property of PH distributions

  19. Data Distribution Analysis and Optimization for PointerBased Distributed Programs

    E-Print Network [OSTI]

    Lee, Jenq-Kuen

    Data Distribution Analysis and Optimization for Pointer­Based Distributed Programs Jenq Kuen Lee Abstract High Performance Fortran (HPF) provides distributed arrays to efficiently support a global name space on distributed memory architectures. The distributed data structures supported by HPF, how­ ever

  20. A closed-form solution for mapping general distributions to minimal PH distributions

    E-Print Network [OSTI]

    A closed-form solution for mapping general distributions to minimal PH distributions Takayuki Pittsburgh Digital Greenhouse Grant 01-1. #12;Abstract Approximating general distributions by phase-type (PH) distributions is a popular technique in queueing analysis, since the Markovian property of PH distributions

  1. 7, 1275112779, 2007 Vertical distribution

    E-Print Network [OSTI]

    Boyer, Edmond

    . In an urban area there are many buildings, which cause large inhomogeneities in the energy and wind profilesACPD 7, 12751­12779, 2007 Vertical distribution of O3 and VOCs in Mexico City E. Velasco et al of Mexico City E. Velasco1,2 , C. M´arquez3 , E. Bueno3 , R. M. Bernab´e3 , A. S´anchez3 , O. Fentanes 3 , H

  2. A current density distribution tool

    E-Print Network [OSTI]

    Jagush, Frederic A.

    1989-01-01T23:59:59.000Z

    . I. INTRODUCTION Current density distribution is an important consideration for those involved in electrochemical systems and electroplating in particular. In the printed wiring board (PWB) business, great emphasis is placed on the study of current... exist. Numerical techniques on the other hand, are usually easy to implement and are easily applicable to microcomputers. Their disadvantage as with any approximation technique is that the exactness of the results with This document follows the style...

  3. Distributed Wind | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data Center HomeIdleBiologicalCrosscuttingDepartment ofDistributed Wind

  4. Factors for Bioenergy Market Development

    SciTech Connect (OSTI)

    Roos, A.; Hektor, B.; Graham, R.L.; Rakos, C.

    1998-10-04T23:59:59.000Z

    Focusing on the development of the whole bioenergy market rather than isolated projects, this paper contributes to the identification of barriers and drivers behind bioenergy technology implementation. It presents a framework for the assessment of the potentials for bioenergy market growth to be used by decision makers in administration and industry. The conclusions are based on case studies of operating bioenergy markets in Austria, US and Sweden. Six important factors for bioenergy market growth have been identified: (1) Integration with other business, e.g. for biomass procurement, (2) Scale effects of bioenergy market, (3) Competition on bioenergy market, (4) Competition with other business, (5) National policy, (6) Local policy and local opinion. Different applications of the framework are discussed.

  5. Infrastructure for distributed enterprise simulation

    SciTech Connect (OSTI)

    Johnson, M.M.; Yoshimura, A.S.; Goldsby, M.E. [and others

    1998-01-01T23:59:59.000Z

    Traditional discrete-event simulations employ an inherently sequential algorithm and are run on a single computer. However, the demands of many real-world problems exceed the capabilities of sequential simulation systems. Often the capacity of a computer`s primary memory limits the size of the models that can be handled, and in some cases parallel execution on multiple processors could significantly reduce the simulation time. This paper describes the development of an Infrastructure for Distributed Enterprise Simulation (IDES) - a large-scale portable parallel simulation framework developed to support Sandia National Laboratories` mission in stockpile stewardship. IDES is based on the Breathing-Time-Buckets synchronization protocol, and maps a message-based model of distributed computing onto an object-oriented programming model. IDES is portable across heterogeneous computing architectures, including single-processor systems, networks of workstations and multi-processor computers with shared or distributed memory. The system provides a simple and sufficient application programming interface that can be used by scientists to quickly model large-scale, complex enterprise systems. In the background and without involving the user, IDES is capable of making dynamic use of idle processing power available throughout the enterprise network. 16 refs., 14 figs.

  6. Velocity Distributions from Nonextensive Thermodynamics

    E-Print Network [OSTI]

    Eric I. Barnes; Liliya L. R. Williams; Arif Babul; Julianne J. Dalcanton

    2006-10-05T23:59:59.000Z

    There is no accepted mechanism that explains the equilibrium structures that form in collisionless cosmological N-body simulations. Recent work has identified nonextensive thermodynamics as an innovative approach to the problem. The distribution function that results from adopting this framework has the same form as for polytropes, but the polytropic index is now related to the degree of nonextensiveness. In particular, the nonextensive approach can mimic the equilibrium structure of dark matter density profiles found in simulations. We extend the investigation of this approach to the velocity structures expected from nonextensive thermodynamics. We find that the nonextensive and simulated N-body rms-velocity distributions do not match one another. The nonextensive rms-velocity profile is either monotonically decreasing or displays little radial variation, each of which disagrees with the rms-velocity distributions seen in simulations. We conclude that the currently discussed nonextensive models require further modifications in order to corroborate dark matter halo simulations. (adapted from TeX)

  7. Entanglement Distribution in Optical Networks

    E-Print Network [OSTI]

    Alex Ciurana; Vicente Martin; Jesus Martinez-Mateo; Bernhard Schrenk; Momtchil Peev; Andreas Poppe

    2014-09-21T23:59:59.000Z

    The ability to generate entangled photon-pairs over a broad wavelength range opens the door to the simultaneous distribution of entanglement to multiple users in a network by using centralized sources and flexible wavelength-division multiplexing schemes. Here we show the design of a metropolitan optical network consisting of tree-type access networks whereby entangled photon-pairs are distributed to any pair of users, independent of their location. The network is constructed employing commercial off-the-shelf components and uses the existing infrastructure, which allows for moderate deployment costs. We further develop a channel plan and a network-architecture design to provide a direct optical path between any pair of users, thus allowing classical and one-way quantum communication as well as entanglement distribution. This allows the simultaneous operation of multiple quantum information technologies. Finally, we present a more flexible backbone architecture that pushes away the load limitations of the original network design by extending its reach, number of users and capabilities.

  8. Infrared Scales and Factorization in QCD

    E-Print Network [OSTI]

    Aneesh V. Manohar

    2005-12-14T23:59:59.000Z

    Effective field theory methods are used to study factorization of the deep inelastic scattering cross-section. The cross-section is shown to factor in QCD, even though it does not factor in perturbation theory for some choices of the infrared regulator. Messenger modes are not required in soft-collinear effective theory for deep inelastic scattering as x -> 1.

  9. Prime Factorization in the Duality Computer

    E-Print Network [OSTI]

    Wan-Ying Wang; Bin Shang; Chuan Wang; Gui Lu Long

    2006-07-04T23:59:59.000Z

    We give algorithms to factorize large integers in the duality computer. We provide three duality algorithms for factorization based on a naive factorization method, the Shor algorithm in quantum computing, and the Fermat's method in classical computing. All these algorithms are polynomial in the input size.

  10. Journal influence factors6 Massimo Franceschet

    E-Print Network [OSTI]

    Franceschet, Massimo

    Journal influence factors6 Massimo Franceschet Department of Mathematics and Computer Science of journal influence, namely 2- year impact factor, 5-year impact factor, eigenfactor and article influence. These indicators have been recently added by Thomson Reuters to the Journal Citation Reports, in both science

  11. Grain size, size-distribution and dislocation structure from diffraction peak profile analysis

    E-Print Network [OSTI]

    Gubicza, Jenõ

    Grain size, size-distribution and dislocation structure from diffraction peak profile analysis T, Budapest, Hungary Abstract Diffraction peak profile analysis (or Line Profile Analysis, LPA) has recently and the strain diffraction profiles. Strain anisotropy is rationalized in terms of the contrast factors

  12. On Evaluating Request-Distribution Schemes for Saving Energy in Server Clusters

    E-Print Network [OSTI]

    Lu, Jiaheng

    . With the growing trend of dynamic content web sites, we employ Power-Aware Request Distribution (PARD) at the load profiles. This allows us to capture the dy- namic workload behavior from TPC-W while using realistic load lack thereof) to migrate connections between servers. The primary workload factors are the load profile

  13. Occurrence and distribution of glycerol dialkyl glycerol tetraethers in a French Arnaud Huguet a

    E-Print Network [OSTI]

    1 Occurrence and distribution of glycerol dialkyl glycerol tetraethers in a French peat bog Arnaud) of archaeal and bacterial origin in peat samples from surface and deep (ca. 50 cm) horizons of a peat bog probably also reflects the heterogeneity of peat samples and the variation in several environmental factors

  14. Nonspecific transcription factor binding reduces variability in transcription factor and target protein expression

    E-Print Network [OSTI]

    Mohammad Soltani; Pavol Bokes; Zachary Fox; Abhyudai Singh

    2015-04-14T23:59:59.000Z

    Transcription factors (TFs) interact with a multitude of binding sites on DNA and partner proteins inside cells. We investigate how nonspecific binding/unbinding to such decoy binding sites affects the magnitude and time-scale of random fluctuations in TF copy numbers arising from stochastic gene expression. A stochastic model of TF gene expression, together with decoy site interactions is formulated. Distributions for the total (bound and unbound) and free (unbound) TF levels are derived by analytically solving the chemical master equation under physiologically relevant assumptions. Our results show that increasing the number of decoy binding sides considerably reduces stochasticity in free TF copy numbers. The TF autocorrelation function reveals that decoy sites can either enhance or shorten the time-scale of TF fluctuations depending on model parameters. To understand how noise in TF abundances propagates downstream, a TF target gene is included in the model. Intriguingly, we find that noise in the expression of the target gene decreases with increasing decoy sites for linear TF-target protein dose-responses, even in regimes where decoy sites enhance TF autocorrelation times. Moreover, counterintuitive noise transmissions arise for nonlinear dose-responses. In summary, our study highlights the critical role of molecular sequestration by decoy binding sites in regulating the stochastic dynamics of TFs and target proteins at the single-cell level.

  15. Courtesy of Sandro Ierovante Distributed by WWW.LENSINC.NET

    E-Print Network [OSTI]

    Kleinfeld, David

    Courtesy of Sandro Ierovante Distributed by WWW.LENSINC.NET #12;Distributed by WWW.LENSINC.NET #12;Distributed by WWW.LENSINC.NET #12;Distributed by WWW.LENSINC.NET #12;Distributed by WWW.LENSINC.NET #12;Distributed by WWW.LENSINC.NET #12;Distributed by WWW.LENSINC.NET #12;Distributed by WWW.LENSINC.NET #12

  16. Flavor decomposition of the nucleon electromagnetic form factors at low $Q^2$

    E-Print Network [OSTI]

    Qattan, I A; Alsaad, A

    2015-01-01T23:59:59.000Z

    The spatial distribution of charge and magnetization within the proton is encoded in the elastic form factors. These have been precisely measured in elastic electron scattering, and the combination of proton and neutron form factors allows for the separation of the up- and down-quark contributions. In this work, we extract the proton and neutron form factors from world's data with an emphasis on precise new data covering the low-momentum region, which is sensitive to the large-scale structure of the nucleon. From these, we separate the up- and down-quark contributions to the proton form factors. We combine cross section and polarization measurements of elastic electron-proton scattering to separate the proton form factors and two-photon exchange (TPE) contributions. We combine the proton form factors with parameterization of the neutron form factor data and uncertainties to separate the up- and down-quark contributions to the proton's charge and magnetic form factors. The extracted TPE corrections are compare...

  17. On the Synchronization of Networks with Prescribed Degree Distributions

    E-Print Network [OSTI]

    Jost, Jürgen

    On the Synchronization of Networks with Prescribed Degree Distributions Fatihcan M. Atay T for building non-synchronizing networks having a prescribed degree distribution. Index Terms distribution, which converges to a Poisson distribution for large network sizes. The degree distribution

  18. Developing and evaluating distributions for probabilistic human exposure assessments

    SciTech Connect (OSTI)

    Maddalena, Randy L.; McKone, Thomas E.

    2002-08-01T23:59:59.000Z

    This report describes research carried out at the Lawrence Berkeley National Laboratory (LBNL) to assist the U. S. Environmental Protection Agency (EPA) in developing a consistent yet flexible approach for evaluating the inputs to probabilistic risk assessments. The U.S. EPA Office of Emergency and Remedial Response (OERR) recently released Volume 3 Part A of Risk Assessment Guidance for Superfund (RAGS), as an update to the existing two-volume set of RAGS. The update provides policy and technical guidance on performing probabilistic risk assessment (PRA). Consequently, EPA risk managers and decision-makers need to review and evaluate the adequacy of PRAs for supporting regulatory decisions. A critical part of evaluating a PRA is the problem of evaluating or judging the adequacy of input distributions PRA. Although the overarching theme of this report is the need to improve the ease and consistency of the regulatory review process, the specific objectives are presented in two parts. The objective of Part 1 is to develop a consistent yet flexible process for evaluating distributions in a PRA by identifying the critical attributes of an exposure factor distribution and discussing how these attributes relate to the task-specific adequacy of the input. This objective is carried out with emphasis on the perspective of a risk manager or decision-maker. The proposed evaluation procedure provides consistency to the review process without a loss of flexibility. As a result, the approach described in Part 1 provides an opportunity to apply a single review framework for all EPA regions and yet provide the regional risk manager with the flexibility to deal with site- and case-specific issues in the PRA process. However, as the number of inputs to a PRA increases, so does the complexity of the process for calculating, communicating and managing risk. As a result, there is increasing effort required of both the risk professionals performing the analysis and the risk manager reviewing it. For deterministic risk assessments, the use of default inputs has improved the ease and the consistency of both performing and reviewing assessments. By analogy, it is expected that similar advantage will be seen in the field of probabilistic risk assessment through the introduction of default distributions. In Part 2 of this report, we consider when a default distribution might be appropriate for use in PRA and work towards development of recommended task-specific distributions for several frequently used exposure factors. An approach that we develop using body weight and exposure duration as case studies offers a transparent way for developing task-specific exposure factor distributions. A third case study using water intake highlights the need for further study aimed at improving the relevance of ''short-term'' data before recommendations on task-specific distributions of water intake can be made.

  19. Enhancing distributed collaboration using sociometric feedback

    E-Print Network [OSTI]

    Kim, Taemie Jung

    2011-01-01T23:59:59.000Z

    Distributed collaboration is often more challenging than co-located collaboration as many of the social signals become lost in computer-mediated communication. I propose a system that improves the performance of distributed ...

  20. Distributionally robust expectation inequalities for structured ...

    E-Print Network [OSTI]

    2015-05-04T23:59:59.000Z

    sisting of all distributions sharing a known mean and variance, contains distributions that are not realistic in .... As in the previous case, the method described in [29] is applicable only to situations in ...... Optimal Control for Load. Alleviation in ...

  1. Coordinated part delivery using distributed planning

    E-Print Network [OSTI]

    Bolger, Adrienne (Adrienne M.)

    2010-01-01T23:59:59.000Z

    In this thesis, we develop a distributed mobile robot platform to deliver parts around a model construction site. The platform's robots, specialized into delivery robots and assembly robots, use a distributed coverage ...

  2. Distributed vs. Centralized Power Systems Frequency Control

    E-Print Network [OSTI]

    Dimarogonas, Dimos

    Distributed vs. Centralized Power Systems Frequency Control Martin Andreasson12 , Dimos V control of electrical power systems. We propose a distributed controller which retains the reference class of large- scale systems are electrical power systems, which employ automatic generation control

  3. Principles of Distributed Data Management in 2020?

    E-Print Network [OSTI]

    Valduriez, Patrick

    2011-01-01T23:59:59.000Z

    With the advents of high-speed networks, fast commodity hardware, and the web, distributed data sources have become ubiquitous. The third edition of the \\"Ozsu-Valduriez textbook Principles of Distributed Database Systems [10] reflects the evolution of distributed data management and distributed database systems. In this new edition, the fundamental principles of distributed data management could be still presented based on the three dimensions of earlier editions: distribution, heterogeneity and autonomy of the data sources. In retrospect, the focus on fundamental principles and generic techniques has been useful not only to understand and teach the material, but also to enable an infinite number of variations. The primary application of these generic techniques has been obviously for distributed and parallel DBMS versions. Today, to support the requirements of important data-intensive applications (e.g. social networks, web data analytics, scientific applications, etc.), new distributed data management tech...

  4. Distributed Control of HVAC&R Networks

    E-Print Network [OSTI]

    Elliott, Matthew Stuart

    2013-07-05T23:59:59.000Z

    retains a degree of modularity—changing one component does not require changing all controllers. The final contribution is a new distributed optimization algorithm that is rooted in distributed MPC and is especially motivated by HVAC&R systems...

  5. Advanced Power Electronic Interfaces for Distributed

    E-Print Network [OSTI]

    Advanced Power Electronic Interfaces for Distributed Energy Systems Part 2: Modeling, Development Electronic Interfaces for Distributed Energy Systems Part 2: Modeling, Development, and Experimental, and Experimental Evaluation of Advanced Control Functions for Single-Phase Utility-Connected Inverter S

  6. Distributed Signal Decorrelation in WSNs Using the

    E-Print Network [OSTI]

    Distributed Signal Decorrelation in WSNs Using the Sparse Matrix Transform (SMT) Leonardo Bachega: Sparse Matrix Transform(SMT) In this paper: The Vector SMT ·Improvement on original SMT ·Suitable for implementaCon in a network of sensors ·Distributed

  7. The urban design of distributed energy resources

    E-Print Network [OSTI]

    Sheehan, Travis (Travis P.)

    2012-01-01T23:59:59.000Z

    Distributed energy resources (DERs) are a considerable research focus for cities to reach emissions reduction goals and meet growing energy demand. DERs, consisting of local power plants and distribution infrastructure, ...

  8. Onsite Wastewater Treatment Systems: Spray Distribution System

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2008-10-23T23:59:59.000Z

    Spray distribution systems for wastewater are much like lawn sprinkler systems, in that they spray treated wastewater over the surface of a yard. This publication explains how spray distribution systems work, what their design requirements are...

  9. Factor Analysis for Skewed Data and Skew-Normal Maximum Likelihood Factor Analysis

    E-Print Network [OSTI]

    Gaucher, Beverly Jane

    2013-04-04T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2.7.1 The Factor Analysis Model . . . . . . . . . . . . . . . . . 28 v 2.8 Model Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2.8.1 The Akaike Information Criterion . . . . . . . . . . . . . . 30 2.8.2 The Bayesian... Information Criterion . . . . . . . . . . . . . 31 2.9 Factor Scores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2.10 Non-uniqueness of Factor Loadings . . . . . . . . . . . . . . . . . . 32 2.10.1 The Rotation of Factor Loadings...

  10. Nuclear correction factors from neutrino DIS

    E-Print Network [OSTI]

    K. Kovarik

    2011-07-15T23:59:59.000Z

    Neutrino Deep Inelastic Scattering on nuclei is an essential process to constrain the strange quark parton distribution functions in the proton. The critical component on the way to using the neutrino DIS data in a proton PDF analysis is understanding the nuclear effects in parton distribution functions. We parametrize these effects by nuclear parton distribution functions and we use this framework to analyze the consistency of neutrino DIS data with other nuclear data.

  11. Update of MRST parton distributions.

    E-Print Network [OSTI]

    Thorne, Robert S; Martin, A D; Stirling, W James; Roberts, R G

    knowledge of the partonic structure of the proton is an essential ingredient in the analysis of hard scattering data from pp or p¯p or ep high energy collisions. Much at- tention has recently been devoted to obtaining reliable uncertainties on the parton... photons than dnV (x) quarks. To a rough approximation, the photon distribution should be ?(x,Q2) = ? j e2j ? 2pi ln(Q2/m2q) ? 1 x dy y P?q(y) qj( x y ,Q2). So there is more photon momentum in the proton than in the neutron due to high-x up quarks radiating...

  12. ASYMMETRIC SOLAR WIND ELECTRON DISTRIBUTIONS

    SciTech Connect (OSTI)

    Yoon, Peter H.; Kim, Sunjung; Lee, Junggi; Lee, Junhyun; Park, Jongsun; Park, Kyungsun; Seough, Jungjoon [School of Space Research, Kyung Hee University, Yongin-Si, Gyeonggi-Do 446-701 (Korea, Republic of); Hong, Jinhy [Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)

    2012-08-20T23:59:59.000Z

    The present paper provides a possible explanation for the solar wind electron velocity distribution functions possessing asymmetric energetic tails. By numerically solving the electrostatic weak turbulence equations that involve nonlinear interactions among electrons, Langmuir waves, and ion-sound waves, it is shown that different ratios of ion-to-electron temperatures lead to the generation of varying degrees of asymmetric tails. The present finding may be applicable to observations in the solar wind near 1 AU and in other regions of the heliosphere and interplanetary space.

  13. The CJ12 parton distributions

    SciTech Connect (OSTI)

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

    2013-07-01T23:59:59.000Z

    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.

  14. Chaotic distributions for relativistic particles

    E-Print Network [OSTI]

    Dawan Mustafa; Bernt Wennberg

    2015-03-16T23:59:59.000Z

    We study a modified Kac model where the classical kinetic energy is replaced by an arbitrary energy function $\\phi(v)$, $v\\in\\mathbb{R}$. The aim of this paper is to show that the uniform distribution with respect to the microcanonical measure is $Ce^{-z_0\\phi(v)} $-chaotic, $C,z_0\\in\\mathbb{R}_{+}$. The kinetic energy for relativistic particles is a special case. A generalization to the case $v\\in \\mathbb{R}^d$ which involves conservation momentum is also formally discussed.

  15. Heat distribution by natural convection

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1985-01-01T23:59:59.000Z

    Natural convection can provide adequate heat distribution in many situtations that arise in buildings. This is appropriate, for example, in passive solar buildings where some rooms tend to be more strongly solar heated than others or to reduce the number of heating units required in a building. Natural airflow and heat transport through doorways and other internal building apertures is predictable and can be accounted for in the design. The nature of natural convection is described, and a design chart is presented appropriate to a simple, single-doorway situation. Natural convective loops that can occur in buildings are described and a few design guidelines are presented.

  16. ARM - Measurement - Hydrometeor Size Distribution

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distribution ARM Data

  17. Sandia Energy - Distribution Grid Integration

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand RequirementsCoatings Initiated at PNNL's SequimReactors ToDecisionDistribution Grid

  18. Distribution Workshop | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E T ADRAFTJanuary 2004 |Distribution Workshop

  19. Integrated Distribution Planning Concept Paper

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn Other NewsSpin andInterim Data Changes in the2011Distribution

  20. Predicting the cosmological constant with the scale-factor cutoff measure

    SciTech Connect (OSTI)

    De Simone, Andrea; Guth, Alan H. [Center for Theoretical Physics, Laboratory for Nuclear Science, and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Salem, Michael P.; Vilenkin, Alexander [Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)

    2008-09-15T23:59:59.000Z

    It is well known that anthropic selection from a landscape with a flat prior distribution of cosmological constant {lambda} gives a reasonable fit to observation. However, a realistic model of the multiverse has a physical volume that diverges with time, and the predicted distribution of {lambda} depends on how the spacetime volume is regulated. A very promising method of regulation uses a scale-factor cutoff, which avoids a number of serious problems that arise in other approaches. In particular, the scale-factor cutoff avoids the 'youngness problem' (high probability of living in a much younger universe) and the 'Q and G catastrophes' (high probability for the primordial density contrast Q and gravitational constant G to have extremely large or small values). We apply the scale-factor cutoff measure to the probability distribution of {lambda}, considering both positive and negative values. The results are in good agreement with observation. In particular, the scale-factor cutoff strongly suppresses the probability for values of {lambda} that are more than about 10 times the observed value. We also discuss qualitatively the prediction for the density parameter {omega}, indicating that with this measure there is a possibility of detectable negative curvature.

  1. On Distribution of Zeros of Some Quazipolynoms

    E-Print Network [OSTI]

    H. I. Ahmadov

    2011-11-02T23:59:59.000Z

    In this paper we investigate distribution of zeros for only quasipolynom and obtain exactly lower-bound for their modulus.

  2. Parton Distribution Functions: Impact of HERA

    E-Print Network [OSTI]

    Kunihiro Nagano; for the H1; ZEUS Collaborations

    2008-08-27T23:59:59.000Z

    Recent progresses of the proton structure measurements and determination of parton distribution functions by $ep$ collisions at HERA are introduced.

  3. Distributed Energy Technology Simulator: Microturbine Demonstration...

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

    Simulator: Microturbine Demonstration, October 2001 Distributed Energy Technology Simulator: Microturbine Demonstration, October 2001 This 2001 paper discusses the National Rural...

  4. Distributed Energy Technology Characterization (Desiccant Technologies...

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

    Characterization (Desiccant Technologies), January 2004 Distributed Energy Technology Characterization (Desiccant Technologies), January 2004 The purpose of this report is to...

  5. Binding of transcription factors adapts to resolve information-energy trade-off

    E-Print Network [OSTI]

    Kagan, Yonatan Savir Jacob

    2015-01-01T23:59:59.000Z

    We examine the binding of transcription factors to DNA in terms of an information transfer problem. The input of the noisy channel is the biophysical signal of a factor bound to a DNA site, and the output is a distribution of probable DNA sequences at this site. This task involves an inherent tradeoff between the information gain and the energetics of the binding interaction - high binding energies provide higher information gain but hinder the dynamics of the system as factors are bound too tightly. We show that adaptation of the binding interaction towards increasing information transfer under energy constraints implies that the information gain per specific binding energy at each base-pair is maximized. We analyze hundreds of prokaryote and eukaryote transcription factors from various organisms to evaluate the discrimination energies. We find that, in accordance with our theoretical argument, binding energies nearly maximize the information gain per energy. This work suggests the adaptation of information ...

  6. Weighted Marshall-Olkin Bivariate Exponential Distribution

    E-Print Network [OSTI]

    Kundu, Debasis

    Weighted Marshall-Olkin Bivariate Exponential Distribution Ahad Jamalizadeh§ & Debasis Kundu of weighted Marshall-Olkin bivariate exponential distribu- tions. This new singular distribution has of this paper is to introduce a weighted Marshall-Olkin bivariate exponential (WMOBE) distribution, using

  7. A DISTRIBUTED POWER CONTROL ALGORITHM FOR

    E-Print Network [OSTI]

    Mitra, Debasis

    A DISTRIBUTED POWER CONTROL ALGORITHM FOR BURSTY TRANSMISSIONS ON CELLULAR, SPREAD SPECTRUM, USA ABSTRACT We propose a distributed algorithm for power control in cellular, wideband networks, although its parameters are different from data. We propose a distributed algorithm for power control

  8. Quantum Key Distribution with Screening and Analyzing

    E-Print Network [OSTI]

    Won-Ho Kye

    2006-10-04T23:59:59.000Z

    We propose a quantum key distribution scheme by using screening angles and analyzing detectors which enable to notice the presence of Eve who eavesdrops the quantum channel, as the revised protocol of the recent quantum key distribution [Phys. Rev. Lett. 95, 040501 (2005)]. We discuss the security of the proposed quantum key distribution against various attacks including impersonation attack and Trojan Horse attack.

  9. Vertical Contracts and Mandatory Universal Distribution

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Vertical Contracts and Mandatory Universal Distribution Larry S. Karp Jeffrey M. Perloff July 2012 vendor. If a monopoly uses a single vendor, the government may impose a mandatory universal distribution consumer welfare. Keywords: vertical restrictions, mandatory universal distribution, new product oligopoly

  10. Optimal Rate Allocation in Overlay Content Distribution

    E-Print Network [OSTI]

    Li, Baochun

    Optimal Rate Allocation in Overlay Content Distribution Chuan Wu and Baochun Li Department. This paper addresses the optimal rate allocation problem in overlay content distribution for efficient, these scenarios reflect the contrast between elastic and streaming content distribution, with either per

  11. Visualizing highdimensional posterior distributions in Bayesian modeling

    E-Print Network [OSTI]

    Kaski, Samuel

    Visualizing high­dimensional posterior distributions in Bayesian modeling Jarkko Venna and Samuel on the posterior distribution of the model parameters. The closed­form solution is seldom known and samples distributions; the current method is based on Self­Organizing Maps and Fisher metrics. Sample applications have

  12. Distributed Control for AI Gerard Tely

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Distributed Control for AI Gerard Tely Dept of Computer Science, Utrecht University P.O. Box 80 a number of elementary problems in distributed computing and a couple of well-known algorithmic building blocks", which are used as procedures in distributed applications. We shall not strive for completeness

  13. Network Coding for Large Scale Content Distribution

    E-Print Network [OSTI]

    Keinan, Alon

    Network Coding for Large Scale Content Distribution IEEE Infocom 2005 Christos Gkantsidis College propose a new scheme for content distribution of large files that is based on network coding. With network coding, each node of the distribution network is able to generate and transmit encoded blocks

  14. Cleared for public release, distribution unlimited

    E-Print Network [OSTI]

    Feigenbaum, Joan

    Cleared for public release, distribution unlimited A Study on The Network as Economy #12;Cleared for public release, distribution unlimited The Premise · Modern technological networks are on a collision for public release, distribution unlimited Network-centric Operations are at Risk · Increasingly pervasive

  15. Environmental Cyberinfrastructure Needs For Distributed Sensor Networks

    E-Print Network [OSTI]

    Hamilton, Michael P.

    1 Environmental Cyberinfrastructure Needs For Distributed Sensor Networks 12-14 August 2003;2 Environmental Cyberinfrastructure Needs for Distributed Sensor Networks A Report from a National Science Cyberinfrastructure Needs for Distributed Sensor Networks: A Report from a National Science Foundation Sponsored

  16. Distributed Online Frequency Assignment in Cellular Networks ?

    E-Print Network [OSTI]

    Devoto, Stephen H.

    Distributed Online Frequency Assignment in Cellular Networks ? (Extended Abstract) Jeannette a general framework for studying distributed online frequency assignment in cellular networks. The problem at the corresponding network cell. In this setting, we present several distributed online algorithms for this problem

  17. Distributed Compressed Sensing in Dynamic Networks

    E-Print Network [OSTI]

    Eldar, Yonina

    Distributed Compressed Sensing in Dynamic Networks Stacy Patterson Department of Computer Science theoretical results to develop a distributed version of IHT for dynamic networks. Evaluations show that our throughout the network, it is desirable to perform this recovery within the network in a distributed fashion

  18. Globally Integrated Power and Clock Distribution Network

    E-Print Network [OSTI]

    Friedman, Eby G.

    Globally Integrated Power and Clock Distribution Network Renatas Jakushokas and Eby G. Friedman and clock distribution networks are fundamentally different in terms of signal frequency and current flow signals may be integrated to eliminate the on-chip global clock distribution network. This combined

  19. Properties of real networks: degree distribution

    E-Print Network [OSTI]

    Albert, Réka

    Properties of real networks: degree distribution Nodes with small degrees are most frequent;Degree distributions in networks of science collaborations Coauthor, neurosci. 21. )( kkP Coauthor, HEP (2001) )(kP #12;Metabolic networks have a power-law degree distribution H. Jeong et al., Nature 407, 651

  20. Center for Excellence in Logistics and Distribution

    E-Print Network [OSTI]

    Noble, James S.

    Center for Excellence in Logistics and Distribution (CELDi) A National Science Foundation sponsored/UCRC) CELDi has the mission of enabling member organizations to achieve logistics and distribution excellence partnerships achieve logistics and distribution excellence by: 1. Solving real problems that achieve bottom

  1. Reliable Distributed Computing for Decision Support Systems

    E-Print Network [OSTI]

    Bargiela, Andrzej

    Reliable Distributed Computing for Decision Support Systems Taha Osman, Andrzej Bargiela Department of application tasks on the currently avail- able computing nodes. Distributed Systems Reliability Due decision-support systems such as water distribution net- works, involving hundreds or even thousands

  2. Communication and Computation in Distributed CSP Algorithms

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    Communication and Computation in Distributed CSP Algorithms C`esar Fern`andez1 , Ram´on B´ejar1 in the context of networked distributed systems. In order to study the performance of Distributed CSP (DisCSP consider two complete DisCSP algorithms: asynchronous backtracking (ABT) and asynchronous weak commitment

  3. Distributed Connectivity of Wireless Networks

    E-Print Network [OSTI]

    Halldorsson, Magnus M

    2012-01-01T23:59:59.000Z

    We consider the problem of constructing a communication infrastructure from scratch, for a collection of identical wireless nodes. Combinatorially, this means a) finding a set of links that form a strongly connected spanning graph on a set of $n$ points in the plane, and b) scheduling it efficiently in the SINR model of interference. The nodes must converge on a solution in a distributed manner, having no means of communication beyond the sole wireless channel. We give distributed connectivity algorithms that run in time $O(poly(\\log \\Delta, \\log n))$, where $\\Delta$ is the ratio between the longest and shortest distances among nodes. Given that algorithm without prior knowledge of the instance are essentially limited to using uniform power, this is close to best possible. Our primary aim, however, is to find efficient structures, measured in the number of slots used in the final schedule of the links. Our main result is algorithms that match the efficiency of centralized solutions. Specifically, the networks...

  4. Eccentricity distributions in nucleus-nucleus collisions

    E-Print Network [OSTI]

    Li Yan; Jean-Yves Ollitrault; Arthur M. Poskanzer

    2014-09-03T23:59:59.000Z

    We propose a new parametrization of the distribution of the initial eccentricity in a nucleus-nucleus collision at a fixed centrality, which we name the Elliptic Power distribution. It is a two-parameter distribution, where one of the parameters corresponds to the intrinsic eccentricity, while the other parameter controls the magnitude of eccentricity fluctuations. Unlike the previously used Bessel- Gaussian distribution, which becomes worse for more peripheral collisions, the new Elliptic Power distribution fits several Monte Carlo models of the initial state for all centralities.

  5. Semiconductor lasers with uniform longitudinal intensity distribution

    SciTech Connect (OSTI)

    Schrans, T.; Yariv, A. (Department of Applied Physics 128-95, California Institute of Technology, Pasadena, California 91125 (USA))

    1990-04-16T23:59:59.000Z

    Power-dependent nonuniform longitudinal intensity distribution leading to spectral and spatial instabilities is a major problem in semiconductor lasers. It is shown theoretically that a proper choice of the longitudinal distribution of the gain as well as that of the magnitude of the grating coupling coefficient will lead to a uniform intensity distribution in distributed feedback lasers. We also show that the widely used phase, rather than magnitude, control of the coupling coefficient cannot lead to a uniform intensity distribution when the facet reflectivities are zero.

  6. Factors Controlling Redox Speciation of Plutonium and Neptunium in Extraction Separation Processes

    SciTech Connect (OSTI)

    Paulenova, Alena [Principal Investigator; Vandegrift, III, George F. [Collaborator

    2013-09-24T23:59:59.000Z

    The objective of the project was to examine the factors controlling redox speciation of plutonium and neptunium in UREX+ extraction in terms of redox potentials, redox mechanism, kinetics and thermodynamics. Researchers employed redox-speciation extractions schemes in parallel to the spectroscopic experiments. The resulting distribution of redox species w studied uring spectroscopic, electrochemical, and spectro-electrochemical methods. This work reulted in collection of data on redox stability and distribution of redox couples in the nitric acid/nitrate electrolyte and the development of redox buffers to stabilize the desired oxidation state of separated radionuclides. The effects of temperature and concentrations on the redox behavior of neptunium were evaluated.

  7. Synthetic heparin-binding growth factor analogs

    DOE Patents [OSTI]

    Pena, Louis A.; Zamora, Paul; Lin, Xinhua; Glass, John D.

    2007-01-23T23:59:59.000Z

    The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain that binds a heparin-binding growth factor receptor, covalently bound to a hydrophobic linker, which is in turn covalently bound to a non-signaling peptide that includes a heparin-binding domain. The synthetic heparin-binding growth factor analogs are useful as soluble biologics or as surface coatings for medical devices.

  8. Ion impact distribution over plasma exposed nanocone arrays

    SciTech Connect (OSTI)

    Mehrabian, S. [Laser and Plasma Research Institute, Shahid Beheshti University, Evin, Tehran 1983963113 (Iran, Islamic Republic of); Plasma Sources and Applications Center, NIE, Nanyang Technological University, 637616 Singapore (Singapore); Xu, S. [Plasma Sources and Applications Center, NIE, Nanyang Technological University, 637616 Singapore (Singapore); Qaemi, A. A. [Physics Department, Shahid Beheshti University, Evin, Tehran 1983963113 (Iran, Islamic Republic of); Shokri, B. [Laser and Plasma Research Institute, Shahid Beheshti University, Evin, Tehran 1983963113 (Iran, Islamic Republic of); Physics Department, Shahid Beheshti University, Evin, Tehran 1983963113 (Iran, Islamic Republic of); Ostrikov, K. [Plasma Nanoscience Center Australia (PNCA), CSIRO Materials Science and Engineering, P.O. Box 218 Lindfield, New South Wales 2070 (Australia); Plasma Nanoscience, School of Physics, University of Sydney, Sydney, New South Wales 2006 (Australia); Plasma Sources and Applications Center, NIE, Nanyang Technological University, 637616 Singapore (Singapore)

    2013-03-15T23:59:59.000Z

    The effect of an ordered array of nanocones on a conducting substrate immersed in the plasma on the transport of the plasma ions is investigated. The real conical shape of the cones is rigorously incorporated into the model. The movement of 10{sup 5} CH{sub 3}{sup +} ions in the plasma sheath modified by the nanocone array is simulated. The ions are driven by the electric fields produced by the sheath and the nanostructures. The surface charge density and the total charge on the nanotips with different aspect ratios are computed. The ion transport simulation provides important characteristics of the displacement and velocity of the ions. The relative ion distribution along the lateral surfaces of the carbon nanotips is computed as well. It is shown that a rigorous account of the realistic nanostructure shape leads to very different distribution of the ion fluxes on the nanostructured surfaces compared to the previously reported works. The ion flux distribution is a critical factor in the nucleation process on the substrate and determines the nanostructure growth patterns.

  9. Asymmetric Ejecta Distribution of the Cygnus Loop revealed with Suzaku

    E-Print Network [OSTI]

    S. Katsuda; H. Tsunemi; E. Miyata; K. Mori; M. Namiki; N. Nemes; E. D. Miller

    2008-03-03T23:59:59.000Z

    We observed a linearly sliced area of the Cygnus Loop from the north-east to the south-west with Suzaku in seven pointings. After dividing the entire fields of view (FOV) into 119 cells, we extracted spectra from all of the cells and performed spectral analysis for them. We then applied both one- and two-component non-equilibrium ionization (NEI) models for all of the spectra, finding that almost all were significantly better fitted by the two-component NEI model rather than the one-component NEI model. Judging from the abundances, the high-kT_e component must be the ejecta component, while the low-kT_e component comes from the swept-up matter. Therefore, the ejecta turn out to be distributed inside a large area (at least our FOV) of the Cygnus Loop. We divided the entire FOV into northern and southern parts, and found that the ejecta distributions were asymmetric to the geometric center: the ejecta of Si, S, and Fe seem to be distributed more in the south than in the north of the Cygnus Loop by a factor of about 2. The degree of ejecta-asymmetry is consistent with that expected by recent supernova explosion models.

  10. Asymmetric Ejecta Distribution of the Cygnus Loop revealed with Suzaku

    E-Print Network [OSTI]

    Katsuda, S; Miyata, E; Mori, K; Namiki, M; Nemes, N; Miller, E D

    2008-01-01T23:59:59.000Z

    We observed a linearly sliced area of the Cygnus Loop from the north-east to the south-west with Suzaku in seven pointings. After dividing the entire fields of view (FOV) into 119 cells, we extracted spectra from all of the cells and performed spectral analysis for them. We then applied both one- and two-component non-equilibrium ionization (NEI) models for all of the spectra, finding that almost all were significantly better fitted by the two-component NEI model rather than the one-component NEI model. Judging from the abundances, the high-kT_e component must be the ejecta component, while the low-kT_e component comes from the swept-up matter. Therefore, the ejecta turn out to be distributed inside a large area (at least our FOV) of the Cygnus Loop. We divided the entire FOV into northern and southern parts, and found that the ejecta distributions were asymmetric to the geometric center: the ejecta of Si, S, and Fe seem to be distributed more in the south than in the north of the Cygnus Loop by a factor of a...

  11. Parallel Breadth-First Search on Distributed Memory Systems

    SciTech Connect (OSTI)

    Computational Research Division; Buluc, Aydin; Madduri, Kamesh

    2011-04-15T23:59:59.000Z

    Data-intensive, graph-based computations are pervasive in several scientific applications, and are known to to be quite challenging to implement on distributed memory systems. In this work, we explore the design space of parallel algorithms for Breadth-First Search (BFS), a key subroutine in several graph algorithms. We present two highly-tuned par- allel approaches for BFS on large parallel systems: a level-synchronous strategy that relies on a simple vertex-based partitioning of the graph, and a two-dimensional sparse matrix- partitioning-based approach that mitigates parallel commu- nication overhead. For both approaches, we also present hybrid versions with intra-node multithreading. Our novel hybrid two-dimensional algorithm reduces communication times by up to a factor of 3.5, relative to a common vertex based approach. Our experimental study identifies execu- tion regimes in which these approaches will be competitive, and we demonstrate extremely high performance on lead- ing distributed-memory parallel systems. For instance, for a 40,000-core parallel execution on Hopper, an AMD Magny- Cours based system, we achieve a BFS performance rate of 17.8 billion edge visits per second on an undirected graph of 4.3 billion vertices and 68.7 billion edges with skewed degree distribution.

  12. Power-aware applications for scientific cluster and distributed computing

    E-Print Network [OSTI]

    David Abdurachmanov; Peter Elmer; Giulio Eulisse; Paola Grosso; Curtis Hillegas; Burt Holzman; Ruben L. Janssen; Sander Klous; Robert Knight; Shahzad Muzaffar

    2014-10-22T23:59:59.000Z

    The aggregate power use of computing hardware is an important cost factor in scientific cluster and distributed computing systems. The Worldwide LHC Computing Grid (WLCG) is a major example of such a distributed computing system, used primarily for high throughput computing (HTC) applications. It has a computing capacity and power consumption rivaling that of the largest supercomputers. The computing capacity required from this system is also expected to grow over the next decade. Optimizing the power utilization and cost of such systems is thus of great interest. A number of trends currently underway will provide new opportunities for power-aware optimizations. We discuss how power-aware software applications and scheduling might be used to reduce power consumption, both as autonomous entities and as part of a (globally) distributed system. As concrete examples of computing centers we provide information on the large HEP-focused Tier-1 at FNAL, and the Tigress High Performance Computing Center at Princeton University, which provides HPC resources in a university context.

  13. Thermophoretic effects on soot distribution in a direct-injection diesel engine

    SciTech Connect (OSTI)

    Abraham, J. [Univ. of Minnesota, Minneapolis, MN (United States)

    1996-09-01T23:59:59.000Z

    A recently developed stochastic particle approach for computing soot particle dynamics is implemented in a three-dimensional model for flows, sprays, combustion and emissions in Diesel engines. The model is applied to study the distribution of soot particles in a direct-injection Diesel engine. In particular, the effect of thermophoresis on soot distribution is examined. It is shown that thermophoresis could be important once the soot particles are brought close to the walls, i.e. within the boundary layer, by turbulent eddy convection or as a result of the orientation of the sprays. Thermophoresis does not appear to result in a change in the distribution of soot in the regions outside the boundary layer as the characteristic time associated with turbulent eddy convection is at least an order of magnitude shorter than that associated with thermophoresis and it and bulk convection are by far the dominant factors in determining the soot distribution.

  14. Human factors methods in DOE nuclear facilities

    SciTech Connect (OSTI)

    Bennett, C.T.; Banks, W.W. (Lawrence Livermore National Lab., CA (United States)); Waters, R.J. (Department of Energy, Washington, DC (United States))

    1993-01-01T23:59:59.000Z

    The US Department of Energy (DOE) is in the process of developing a series of guidelines for the use of human factors standards, procedures, and methods to be used in nuclear facilities. This paper discusses the philosophy and process being used to develop a DOE human factors methods handbook to be used during the design cycle. The following sections will discuss: (1) basic justification for the project; (2) human factors design objectives and goals; and (3) role of human factors engineering (HFE) in the design cycle.

  15. Factorization for hadronic heavy quarkonium production

    E-Print Network [OSTI]

    Jian-Wei Qiu

    2006-10-31T23:59:59.000Z

    We briefly review several models of heavy quarkonium production in hadronic collisions, and discuss the status of QCD factorization for these production models.

  16. Vitiligo: A good prognostic factor in melanoma?

    E-Print Network [OSTI]

    Cunha, Daniela; Pacheco, Fernando Assis; Cardoso, Jorge

    2009-01-01T23:59:59.000Z

    with intermediate to thick melanomas (>1 mm) with the use ofgood prognostic factor in melanoma? Daniela Cunha, Fernandoimmunologic therapy for melanoma is generally regarded as a

  17. Optimization Online - Building a completely positive factorization

    E-Print Network [OSTI]

    Immanuel Bomze

    2009-08-21T23:59:59.000Z

    Aug 21, 2009 ... Abstract: Using a bordering approach, and building upon an already known factorization of a principal block, we establish sufficient conditions ...

  18. A Closed-Form Solution for Mapping General Distributions to Minimal PH Distributions

    E-Print Network [OSTI]

    Harchol-Balter, Mor

    A Closed-Form Solution for Mapping General Distributions to Minimal PH Distributions Takayuki distributions by phase-type (PH) dis- tributions is a popular technique in queueing analysis, since the Marko- vian property of PH distributions often allows analytical tractability. This paper proposes

  19. Simulation of Distributed Search Engines: Comparing Term, Document and Hybrid Distribution1

    E-Print Network [OSTI]

    Waterloo, University of

    Simulation of Distributed Search Engines: Comparing Term, Document and Hybrid Distribution1 Andrew as a course project for `CS 856 Advanced Topics in Distributed Computing - Performance Modeling and Analysis' taught by Professor Johnny Wong in Winter 2008. #12;Simulation of Distributed Search Engines: Comparing

  20. Bernstein instability driven by thermal ring distribution

    SciTech Connect (OSTI)

    Yoon, Peter H., E-mail: yoonp@umd.edu [Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742 (United States); School of Space Research, Kyung Hee University, Yongin-Si, Gyeonggi-Do 446-701 (Korea, Republic of); Hadi, Fazal; Qamar, Anisa [Institute of Physics and Electronics, University of Peshawar, Peshawar 25000 (Pakistan)

    2014-07-15T23:59:59.000Z

    The classic Bernstein waves may be intimately related to banded emissions detected in laboratory plasmas, terrestrial, and other planetary magnetospheres. However, the customary discussion of the Bernstein wave is based upon isotropic thermal velocity distribution function. In order to understand how such waves can be excited, one needs an emission mechanism, i.e., an instability. In non-relativistic collision-less plasmas, the only known Bernstein wave instability is that associated with a cold perpendicular velocity ring distribution function. However, cold ring distribution is highly idealized. The present Brief Communication generalizes the cold ring distribution model to include thermal spread, so that the Bernstein-ring instability is described by a more realistic electron distribution function, with which the stabilization by thermal spread associated with the ring distribution is demonstrated. The present findings imply that the excitation of Bernstein waves requires a sufficiently high perpendicular velocity gradient associated with the electron distribution function.

  1. A Formal Model of Provenance in Distributed Systems

    E-Print Network [OSTI]

    Francalanza, Adrian

    A Formal Model of Provenance in Distributed Systems Issam Souilah2 Adrian Francalanza1 Vladimiro;Motivation Trust In a Distributed System #12;Motivation Trust In a Distributed System Distribution inherent parallelism. #12;Motivation Trust In a Distributed System Distribution inherent parallelism. Distribution

  2. Cooperative Fault Tolerant Distributed Computing

    SciTech Connect (OSTI)

    Fagg, Graham E.

    2006-03-15T23:59:59.000Z

    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.

  3. Heat distribution by natural convection

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1985-01-01T23:59:59.000Z

    Natural convection can provide adequate heat distribution in many situations that arise in buildings. This is appropriate, for example, in passive solar buildings where some rooms tend to be more strongly solar heated than others. Natural convection can also be used to reduce the number of auxiliary heating units required in a building. Natural airflow and heat transport through doorways and other internal building apertures are predictable and can be accounted for in the design. The nature of natural convection is described, and a design chart is presented appropriate to a simple, single-doorway situation. Experimental results are summarized based on the monitoring of 15 passive solar buildings which employ a wide variety of geometrical configurations including natural convective loops.

  4. Infrared Safety in Factorized Hard Scattering Cross-Sections

    E-Print Network [OSTI]

    Andrew Hornig; Christopher Lee; Grigory Ovanesyan

    2009-05-13T23:59:59.000Z

    The rules of soft-collinear effective theory can be used naively to write hard scattering cross-sections as convolutions of separate hard, jet, and soft functions. One condition required to guarantee the validity of such a factorization is the infrared safety of these functions in perturbation theory. Using e+e- angularity distributions as an example, we propose and illustrate an intuitive method to test this infrared safety at one loop. We look for regions of integration in the sum of Feynman diagrams contributing to the jet and soft functions where the integrals become infrared divergent. Our analysis is independent of an explicit infrared regulator, clarifies how to distinguish infrared and ultraviolet singularities in pure dimensional regularization, and demonstrates the necessity of taking zero-bins into account to obtain infrared-safe jet functions.

  5. Making tensor factorizations robust to non-gaussian noise.

    SciTech Connect (OSTI)

    Chi, Eric C. (Rice University, Houston, TX); Kolda, Tamara Gibson

    2011-03-01T23:59:59.000Z

    Tensors are multi-way arrays, and the CANDECOMP/PARAFAC (CP) tensor factorization has found application in many different domains. The CP model is typically fit using a least squares objective function, which is a maximum likelihood estimate under the assumption of independent and identically distributed (i.i.d.) Gaussian noise. We demonstrate that this loss function can be highly sensitive to non-Gaussian noise. Therefore, we propose a loss function based on the 1-norm because it can accommodate both Gaussian and grossly non-Gaussian perturbations. We also present an alternating majorization-minimization (MM) algorithm for fitting a CP model using our proposed loss function (CPAL1) and compare its performance to the workhorse algorithm for fitting CP models, CP alternating least squares (CPALS).

  6. Distributed energy resources at naval base ventura county building 1512

    E-Print Network [OSTI]

    Bailey, Owen C.; Marnay, Chris

    2004-01-01T23:59:59.000Z

    by a DER system. Distributed Energy Resources at Naval BaseFebruary 2003. “Distributed Energy Resources in Practice: A2004. “Distributed Energy Resources Customer Adoption Model

  7. DISTRIBUTION OF THE SYNCHROTRON RADIATION FROM BENDING MAGNETS

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

    DISTRIBUTION OF THE SYNCHROTRON RADIATION FROM BENDING MAGNETS LS-91 S. Kim November 1988 NO DISTRIBUTION REFERENCE ONLY This note describes the distribution of the synchrotron...

  8. Ion Energy Distribution in Collisionless and Collisional, Capacitive RF Sheath

    E-Print Network [OSTI]

    Wang, Ying

    2012-01-01T23:59:59.000Z

    Sheath 3 Model of Collisionless Ion Energy Distributions 3.1Ion Energy Distributions in Collisionless and Collisional,Fall 2012 Ion Energy Distributions in Collisionless and

  9. The iPhone Goes Downstream: Mandatory Universal Distribution?

    E-Print Network [OSTI]

    Karp, Larry; Perloff, Jeffrey

    2011-01-01T23:59:59.000Z

    ufacturers’ Choice of Distribution Policy under Successivemandatory universal distribution Larry Karp and JeffreyMandatory Universal Distribution ? Larry S. Karp † Jeffrey

  10. Distributed energy resources at naval base ventura county building 1512

    E-Print Network [OSTI]

    Bailey, Owen C.; Marnay, Chris

    2004-01-01T23:59:59.000Z

    system. Distributed Energy Resources at Naval Base Ventura2003. “Distributed Energy Resources in Practice: A Case2004. “Distributed Energy Resources Customer Adoption Model

  11. Cold Air Distribution in Office Buildings: Technology Assessment for California

    E-Print Network [OSTI]

    Bauman, F.S.

    2008-01-01T23:59:59.000Z

    Field Evaluation of Cold Air Distribution Systems. EPRIand J.S. Elleson. 1988. Cold Air Distribution Design Guide.Field Evaluation of a Cold Air Distribution System. EPRI

  12. Assessing the Usefulness of Distributed Measurements in the Smart Grid

    E-Print Network [OSTI]

    Framhein, Theodore Anthony

    2012-01-01T23:59:59.000Z

    greater reliability in distribution systems involveReliability and Failure Diagnosis in Distribution Systems,"Reliability – Data and Networking At present, the major push in distribution system

  13. Photon impact factor in the NLO

    SciTech Connect (OSTI)

    Balitsky, Ian [JLAB

    2013-04-01T23:59:59.000Z

    The photon impact factor for the BFKL pomeron is calculated in the next-to-leading order (NLO) approximation using the operator expansion in Wilson lines. The result is represented as a NLO k{sub T}-factorization formula for the structure functions of small-x deep inelastic scattering.

  14. Aviation Human Factors Division Institute of Aviation

    E-Print Network [OSTI]

    AHFD Aviation Human Factors Division Institute of Aviation University of Illinois at Urbana Systems Monitoring and Control Gavin R. Essenberg, Douglas A. Wiegmann, Aviation Human Factors Division experiments with more difficult path selection tasks might reveal if there are advantages for motion. Overall

  15. Cloud Controlling Factors --Low Clouds BJORN STEVENS,

    E-Print Network [OSTI]

    Stevens, Bjorn

    Cloud Controlling Factors -- Low Clouds BJORN STEVENS, Department of Atmospheric and Oceanic) clouds is reviewed, with an emphasis on factors that may be expected to change in a changing climate of low-cloud control- ling processes are offered: these include renewing our focus on theory, model

  16. Modeling of stress distributions on the microstructural level in Alloy 600

    SciTech Connect (OSTI)

    Kozaczek, K.J. [Oak Ridge National Lab., TN (United States); Petrovic, B.G.; Ruud, C.O. [Pennsylvania State Univ., University Park, PA (United States); Mcllree, A.R. [Electric Power Research Inst., Palo Alto, CA (United States)

    1995-04-01T23:59:59.000Z

    Stress distribution in a random polycrystalline material (Alloy 600) was studied using a topologically correct microstructural model. Distributions of von Mises and hydrostatic stresses at the grain vertices, which could be important in intergranular stress corrosion cracking, were analyzed as functions of microstructure, grain orientations and loading conditions. Grain size, shape, and orientation had a more pronounced effect on stress distribution than loading conditions. At grain vertices the stress concentration factor was higher for hydrostatic stress (1.7) than for von Mises stress (1.5). The stress/strain distribution in the volume (grain interiors) is a normal distribution and does not depend on the location of the studied material volume i.e., surface vs/bulk. The analysis of stress distribution in the volume showed the von Mises stress concentration of 1.75 and stress concentration of 2.2 for the hydrostatic pressure. The observed stress concentration is high enough to cause localized plastic microdeformation, even when the polycrystalline aggregate is in the macroscopic elastic regime. Modeling of stresses and strains in polycrystalline materials can identify the microstructures (grain size distributions, texture) intrinsically susceptible to stress/strain concentrations and justify the correctness of applied stress state during the stress corrosion cracking tests. Also, it supplies the information necessary to formulate the local failure criteria and interpret of nondestructive stress measurements.

  17. IMPROVING CONTROL ROOM DESIGN AND OPERATIONS BASED ON HUMAN FACTORS ANALYSES OR HOW MUCH HUMAN FACTORS UPGRADE IS ENOUGH ?

    SciTech Connect (OSTI)

    HIGGINS,J.C.; OHARA,J.M.; ALMEIDA,P.

    2002-09-19T23:59:59.000Z

    THE JOSE CABRERA NUCLEAR POWER PLANT IS A ONE LOOP WESTINGHOUSE PRESSURIZED WATER REACTOR. IN THE CONTROL ROOM, THE DISPLAYS AND CONTROLS USED BY OPERATORS FOR THE EMERGENCY OPERATING PROCEDURES ARE DISTRIBUTED ON FRONT AND BACK PANELS. THIS CONFIGURATION CONTRIBUTED TO RISK IN THE PROBABILISTIC SAFETY ASSESSMENT WHERE IMPORTANT OPERATOR ACTIONS ARE REQUIRED. THIS STUDY WAS UNDERTAKEN TO EVALUATE THE IMPACT OF THE DESIGN ON CREW PERFORMANCE AND PLANT SAFETY AND TO DEVELOP DESIGN IMPROVEMENTS.FIVE POTENTIAL EFFECTS WERE IDENTIFIED. THEN NUREG-0711 [1], PROGRAMMATIC, HUMAN FACTORS, ANALYSES WERE CONDUCTED TO SYSTEMATICALLY EVALUATE THE CR-LA YOUT TO DETERMINE IF THERE WAS EVIDENCE OF THE POTENTIAL EFFECTS. THESE ANALYSES INCLUDED OPERATING EXPERIENCE REVIEW, PSA REVIEW, TASK ANALYSES, AND WALKTHROUGH SIMULATIONS. BASED ON THE RESULTS OF THESE ANALYSES, A VARIETY OF CONTROL ROOM MODIFICATIONS WERE IDENTIFIED. FROM THE ALTERNATIVES, A SELECTION WAS MADE THAT PROVIDED A REASONABLEBALANCE BE TWEEN PERFORMANCE, RISK AND ECONOMICS, AND MODIFICATIONS WERE MADE TO THE PLANT.

  18. Physical Modeling of Scaled Water Distribution System Networks.

    SciTech Connect (OSTI)

    O'Hern, Timothy J.; Hammond, Glenn Edward; Orear, Leslie ,; van Bloemen Waanders, Bart G.; Paul Molina; Ross Johnson

    2005-10-01T23:59:59.000Z

    Threats to water distribution systems include release of contaminants and Denial of Service (DoS) attacks. A better understanding, and validated computational models, of the flow in water distribution systems would enable determination of sensor placement in real water distribution networks, allow source identification, and guide mitigation/minimization efforts. Validation data are needed to evaluate numerical models of network operations. Some data can be acquired in real-world tests, but these are limited by 1) unknown demand, 2) lack of repeatability, 3) too many sources of uncertainty (demand, friction factors, etc.), and 4) expense. In addition, real-world tests have limited numbers of network access points. A scale-model water distribution system was fabricated, and validation data were acquired over a range of flow (demand) conditions. Standard operating variables included system layout, demand at various nodes in the system, and pressure drop across various pipe sections. In addition, the location of contaminant (salt or dye) introduction was varied. Measurements of pressure, flowrate, and concentration at a large number of points, and overall visualization of dye transport through the flow network were completed. Scale-up issues that that were incorporated in the experiment design include Reynolds number, pressure drop across nodes, and pipe friction and roughness. The scale was chosen to be 20:1, so the 10 inch main was modeled with a 0.5 inch pipe in the physical model. Controlled validation tracer tests were run to provide validation to flow and transport models, especially of the degree of mixing at pipe junctions. Results of the pipe mixing experiments showed large deviations from predicted behavior and these have a large impact on standard network operations models.3

  19. Electrical distribution studies for the 200 Area tank farms

    SciTech Connect (OSTI)

    Fisler, J.B.

    1994-08-26T23:59:59.000Z

    This is an engineering study providing reliability numbers for various design configurations as well as computer analyses (Captor/Dapper) of the existing distribution system to the 480V side of the unit substations. The objective of the study was to assure the adequacy of the existing electrical system components from the connection at the high voltage supply point through the transformation and distribution equipment to the point where it is reduced to its useful voltage level. It also was to evaluate the reasonableness of proposed solutions of identified deficiencies and recommendations of possible alternate solutions. The electrical utilities are normally considered the most vital of the utility systems on a site because all other utility systems depend on electrical power. The system accepts electric power from the external sources, reduces it to a lower voltage, and distributes it to end-use points throughout the site. By classic definition, all utility systems extend to a point 5 feet from the facility perimeter. An exception is made to this definition for the electric utilities at this site. The electrical Utility System ends at the low voltage section of the unit substation, which reduces the voltage from 13.8 kV to 2,400, 480, 277/480 or 120/208 volts. These transformers are located at various distances from existing facilities. The adequacy of the distribution system which transports the power from the main substation to the individual area substations and other load centers is evaluated and factored into the impact of the future load forecast.

  20. A Reliability and Validity Study of the Protective Factors Survey to Assess Protective Factors in Families

    E-Print Network [OSTI]

    Counts, Jacqueline Marie

    2010-04-29T23:59:59.000Z

    and caregivers. Confirmatory factor analyses were conducted with a sample of 1,078 participants, who completed a parent education program in Nevada. Results provide psychometric data that support a valid and reliable four-factor solution, consisting of family...

  1. Estimation of the Parameters of Skew Normal Distribution by Approximating the Ratio of the Normal Density and Distribution Functions

    E-Print Network [OSTI]

    Dey, Debarshi

    2010-01-01T23:59:59.000Z

    2 1.2 Normal Distribution and Simple Linear5 1.3 Skew Normal Distribution andthe Standard Normal Density and Distribution Functions 3.1

  2. An object oriented design for high performance linear algebra on distributed memory architectures

    SciTech Connect (OSTI)

    Dongarra, J.J. [Oak Ridge National Lab., TN (United States)]|[Univ. of Tennessee, Knoxville, TN (United States). Dept. of Computer Science; Walker, D.W. [Oak Ridge National Lab., TN (United States); Pozo, R. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Computer Science

    1993-12-31T23:59:59.000Z

    We describe the design of ScaLAPACK++, an object oriented C++ library for implementing linear algebra computations on distributed memory multicomputers. This package, when complete, will support distributed dense, banded, sparse matrix operations for symmetric, positive-definite, and non-symmetric cases. In ScaLAPACK++ we have employed object oriented design methods to enchance scalability, portability, flexibility, and ease-of-use. We illustrate some of these points by describing the implementation of a right-looking LU factorization for dense systems in ScaLAPACK++.

  3. A High Power Density DC-DC Converter for Distributed PV Architectures

    SciTech Connect (OSTI)

    Mohammed S. Agamy; Song Chi; Ahmed Elasser; Maja Harfman-Todorovic; Yan Jiang; Frank Mueller; Fengfeng Tao

    2012-06-01T23:59:59.000Z

    In order to maximize solar energy harvesting capabilities, power converters have to be designed for high efficiency and good MPPT and voltage/current performance. When many converters are used in distributed systems, power density also becomes an important factor as it allows for simpler system integration. In this paper a high power density string dc-dc converter suitable for distributed medium to large scale PV installation is presented. A simple partial power processing topology, implemented with all silicon carbide devices provides high efficiency as well as high power density. A 3.5kW, 100kHz converter is designed and tested to verify the proposed methods.

  4. Background Bayes Factor Simulation Study BF And PPP Using Bayes Factors for Model Selection in

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Background Bayes Factor Simulation Study BF And PPP Using Bayes Factors for Model Selection in High Study BF And PPP Model Comparison in Astrophysics Nested models (line detection in spectral analysis" to formally compare or select a model. #12;Background Bayes Factor Simulation Study BF And PPP Spectral

  5. Low jitter RF distribution system

    DOE Patents [OSTI]

    Wilcox, Russell; Doolittle, Lawrence; Huang, Gang

    2012-09-18T23:59:59.000Z

    A timing signal distribution system includes an optical frequency stabilized laser signal amplitude modulated at an rf frequency. A transmitter box transmits a first portion of the laser signal and receive a modified optical signal, and outputs a second portion of the laser signal and a portion of the modified optical signal. A first optical fiber carries the first laser signal portion and the modified optical signal, and a second optical fiber carries the second portion of the laser signal and the returned modified optical signal. A receiver box receives the first laser signal portion, shifts the frequency of the first laser signal portion outputs the modified optical signal, and outputs an electrical signal on the basis of the laser signal. A detector at the end of the second optical fiber outputs a signal based on the modified optical signal. An optical delay sensing circuit outputs a data signal based on the detected modified optical signal. An rf phase detect and correct signal circuit outputs a signal corresponding to a phase stabilized rf signal based on the data signal and the frequency received from the receiver box.

  6. Protecting Intelligent Distributed Power Grids Against Cyber...

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

    will help protect intelligent distributed power grids from cyber attacks. Intelligent power grids are interdependent energy management systems-encompassing generation,...

  7. Integration of Demand Side Management, Distributed Generation...

    Open Energy Info (EERE)

    integration of energy efficiency, distributed generation, renewable energy resources and energy storage technologies, both locally and globally, to maximize the value of the...

  8. Articles about Distributed Wind | Department of Energy

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

    and is poised for future growth that could double the capacity of renewable electricity generation from resources like wind power by 2020. March 31, 2014 PNNL Reports Distributed...

  9. Sandia National Laboratories: European Distributed Energies Research...

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

    SMART Grid, Solar Sandia National Laboratories, the Electric Power Research Institute (EPRI) and European Distributed Energies Research Laboratories (DERlab) have organized a...

  10. Sandia National Laboratories: renewable energy and distributed...

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

    SMART Grid, Solar Sandia National Laboratories, the Electric Power Research Institute (EPRI) and European Distributed Energies Research Laboratories (DERlab) have organized a...

  11. Distributed Energy Systems Integration Group (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-10-01T23:59:59.000Z

    Factsheet developed to describe the activites of the Distributed Energy Systems Integration Group within NREL's Electricity, Resources, and Buildings Systems Integration center.

  12. A DISTRIBUTED, SCALEABLE SIMPLEX METHOD 1. Introduction ...

    E-Print Network [OSTI]

    Stephen Wright

    2005-08-31T23:59:59.000Z

    We present a simple, scaleable, distributed simplex implementation for large ... Scalability is achieved by using the standard form of the simplex rather than the ...

  13. A Robust Optimization Framework for Analyzing Distribution ...

    E-Print Network [OSTI]

    2006-02-07T23:59:59.000Z

    a distribution system. We demonstrate that our proposed robust optimization framework is analyt- ically tractable and is computationally efficient for analyzing

  14. Optimization Online - Communication-Efficient Distributed ...

    E-Print Network [OSTI]

    Yuchen Zhang

    2015-01-05T23:59:59.000Z

    Jan 5, 2015 ... Communication-Efficient Distributed Optimization of Self-Concordant Empirical Loss. Yuchen Zhang(yuczhang ***at*** eecs.berkeley.edu)

  15. Stationary distributions of continuous time Markov chains

    E-Print Network [OSTI]

    2012-04-13T23:59:59.000Z

    Apr 13, 2012 ... stationary distribution as the limiting fraction of time spent in states. 1 Stationary measures in continuous time. The following theorem is an ...

  16. Document management guidelines for distributed project networks

    E-Print Network [OSTI]

    Hameri, A P; Høimyr, Nils-Joar

    1999-01-01T23:59:59.000Z

    This paper provides the project engineer with guidelines or a checklist on tasks that must be considered, defined and documented before the project can successfully implement a document management system in geographically distributed project environment. Topics ranging from configuration management, approval process, document types, user administration and document naming are covered. The underlying cases of the paper are that of CERN (European Laboratory for Particle Physics) and its latest accelerator project, together with the Nordisk Industrifond -funded Connecting Distributed Competencies (NI#: 98082) project, with a focus on distributed shipbuilding processes. Keywords: distributed project management, product data management, networking, document management, virtual workspaces

  17. Asymptotic Convergence Analysis for Distributional Robust ...

    E-Print Network [OSTI]

    2013-05-02T23:59:59.000Z

    May 2, 2013 ... the true distribution may adequately address the risk from the ...... them and present a quantitative convergence analysis of PN to P under total.

  18. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    Transportation Water Heaters and Hot Water DistributionLaboratory). 2008. Water Heaters and Hot Water Distributionfor instantaneous gas water heaters; and pressure loss

  19. Distributed Generation Operational Reliability and Availability...

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

    Reliability and Availability Database, Final Report, January 2004 Distributed Generation Operational Reliability and Availability Database, Final Report, January 2004 This final...

  20. Natural Gas Transmission and Distribution Module This

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

    They relate to (1) structural components of the model, (2) capacity expansion and pricing of transmission and distribution services, (3) Arctic pipelines, and (4) imports...

  1. Natural Gas Transmission and Distribution Module

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

    They relate to (1) structural components of the model, (2) capacity expansion and pricing of transmission and distribution services, (3) Arctic pipelines, and (4) imports...

  2. Building a Smarter Distribution System in Pennsylvania

    Office of Environmental Management (EM)

    Development of an advanced distribution management system (DMS) software is at the heart of the project. The DMS monitors and controls all of the smart devices being installed...

  3. Sandia National Laboratories: Distribution Grid Integration

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

    Second Annual Electric Power Research InstituteSandia Photovoltaic Systems Symposium On April 15, 2014, in Concentrating Solar Power, Distribution Grid Integration, Energy,...

  4. Passive containment cooling water distribution device

    DOE Patents [OSTI]

    Conway, Lawrence E. (Hookstown, PA); Fanto, Susan V. (Plum Borough, PA)

    1994-01-01T23:59:59.000Z

    A passive containment cooling system for a nuclear reactor containment vessel. Disclosed is a cooling water distribution system for introducing cooling water by gravity uniformly over the outer surface of a steel containment vessel using a series of radial guide elements and cascading weir boxes to collect and then distribute the cooling water into a series of distribution areas through a plurality of cascading weirs. The cooling water is then uniformly distributed over the curved surface by a plurality of weir notches in the face plate of the weir box.

  5. Static Consistency Checking for Distributed Specifications

    E-Print Network [OSTI]

    Finkelstein, Anthony

    Static Consistency Checking for Distributed Specifications Christian Nentwich, Wolfgang Emmerich, UK {c.nentwich,w.emmerich,a.finkelstein}@cs.ucl.ac.uk Abstract Software engineers building a complex

  6. Distributed Bio-Oil Reforming (Presentation)

    SciTech Connect (OSTI)

    Evans, R. J.; Czernik, S.; French, R.; Ratcliff, M.; Marda, J.; Dean, A. M.

    2007-05-15T23:59:59.000Z

    This presentation by Bob Evans at the 2007 DOE Hydrogen Program Annual Merit Review Meeting provides information about NREL's distributed bio-oil reforming efforts.

  7. Sandia National Laboratories: Distributed Grid Integration

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

    Distributed Grid Integration Federal Electric Regulatory Commission Revised Its Small Generator Interconnection Procedure and Small Generator Interconnection Agreement On March 4,...

  8. Sandia National Laboratories: Distribution Grid Integration

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

    Energy Supply Transformation Needed On February 20, 2013, in DETL, Distribution Grid Integration, Energy, Energy Assurance, Energy Surety, Grid Integration, Infrastructure...

  9. Optimization Online - Distributionally Robust Convex Optimization

    E-Print Network [OSTI]

    Wolfram Wiesemann

    2013-02-04T23:59:59.000Z

    Feb 4, 2013 ... Abstract: Distributionally robust optimization is a paradigm for decision-making under uncertainty where the uncertain problem data is governed ...

  10. Spin dependent parton distributions and structure functions

    SciTech Connect (OSTI)

    W. Bentz; I. C. Cloet; T. Ito; A. W. Thomas; K. Yazaki

    2007-09-10T23:59:59.000Z

    Nuclear parton distributions and structure functions are determined in an effective chiral quark theory. We also discuss an extension of our model to fragmentation functions.

  11. Sandia National Laboratories: Distribution Grid Integration

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

    Its Phase 1 Operational Demonstration in Late January On April 5, 2013, in Distribution Grid Integration, Energy Assurance, Energy Assurance, Energy Surety, Grid Integration,...

  12. Networked Loads in the Distribution Grid

    E-Print Network [OSTI]

    Wang, Zhifang; Li, Xiao; Muthukumar, Vishak; Scaglione, Anna; Peisert, Sean; McParland, Chuck

    2012-01-01T23:59:59.000Z

    Lu, and Deborah A. Frincke. Smart-Grid Security Issues. IEEELoads in the Distribution Grid Zhifang Wang ? , Xiao Li † ,Transformer   sensors   Grid   Cyber  system   Cooling    

  13. Kullback-Leibler Divergence Constrained Distributionally Robust ...

    E-Print Network [OSTI]

    2012-11-23T23:59:59.000Z

    The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, .... this formulation by restricting ambiguous distribution to the family of ...

  14. RELIABILITY PLANNING IN DISTRIBUTED ELECTRIC ENERGY SYSTEMS

    E-Print Network [OSTI]

    Kahn, E.

    2011-01-01T23:59:59.000Z

    and deal only with solar cogeneration units that are assumedand Distributed. cogeneration). These provide just underparameters. as conventional cogeneration units. technologies

  15. Factors affecting expanded electricity trade in North America

    SciTech Connect (OSTI)

    Hill, L.J.

    1994-01-01T23:59:59.000Z

    The authors explore factors that affect electricity trade between enterprises in the US and Canada and the US and Mexico. They look to those underlying policy and institutional factors that affect the relative costs of producing electricity in the three countries. In particular, they consider six factors that appear to have a significant impact on electricity trade in North America: differences in the types of economic regulation of power leading to differences in cost recovery for wholesale and retail power and wheeling charges; changing regulatory attitudes, placing more emphasis on demand-side management and environmental concerns; differences in energy and economic policies; differences in national and subnational environmental policies; changing organization of electric power industries which may foster uncertainty, change historical relationships, and provide other potentially important sources of power for distribution utilities; and differences in the ability of enterprises to gain access to electric power markets because of restrictions placed on transmission access. In Section 2, the authors discuss the regulation of electricity trade in North America and provide an overview of the recent trading experience for electricity between Canada and the US and between Mexico and the US, including the volume of that trade over the past decade and existing transmission capacity between regions of the three countries. In Section 3, they look at the benefits that accrue to trading counties and what those benefits are likely to be for the three countries. The discussion in Section 4 centers on the relevant provisions of the Canada Free Trade Agreement and the proposed North American Free Trade Agreement. In Section 5, they set the stage for the discussion of policy and institutional differences presented in Section 6 by outlining differences in the organization of the electric power sectors of Canada, the US, and Mexico. The study is synthesized in Section 7.

  16. Distributed Broadcasting and Mapping Protocols in Directed Anonymous Networks

    E-Print Network [OSTI]

    Bruck, Jehoshua (Shuki)

    Distributed Broadcasting and Mapping Protocols in Directed Anonymous Networks Michael Langberg is to create distributed protocols that reduce the uncertainty by distributing the knowledge of the network anonymous networks. Keywords: Anonymous networks, directed networks, distributed protocols. 1 Introduction

  17. Cathode power distribution system and method of using the same for power distribution

    DOE Patents [OSTI]

    Williamson, Mark A; Wiedmeyer, Stanley G; Koehl, Eugene R; Bailey, James L; Willit, James L; Barnes, Laurel A; Blaskovitz, Robert J

    2014-11-11T23:59:59.000Z

    Embodiments include a cathode power distribution system and/or method of using the same for power distribution. The cathode power distribution system includes a plurality of cathode assemblies. Each cathode assembly of the plurality of cathode assemblies includes a plurality of cathode rods. The system also includes a plurality of bus bars configured to distribute current to each of the plurality of cathode assemblies. The plurality of bus bars include a first bus bar configured to distribute the current to first ends of the plurality of cathode assemblies and a second bus bar configured to distribute the current to second ends of the plurality of cathode assemblies.

  18. Finite Size Effects on the Real-Space Pair Distribution Function of Nanoparticles

    SciTech Connect (OSTI)

    Gilbert, Benjamin

    2008-10-01T23:59:59.000Z

    The pair distribution function (PDF) method is a powerful approach for the analysis of the structure of nanoparticles. An important approximation used in nanoparticle PDF simulations is the incorporation of a form factor describing nanoparticle size and shape. The precise effect of the form factor on the PDF is determined by both particle shape and structure if these characteristics are both anisotropic and correlated. The correct incorporation of finite size effects is important for distinguishing and quantifying the structural consequences of small particle size in nanomaterials.

  19. Parameterizing Size Distribution in Ice Clouds

    SciTech Connect (OSTI)

    DeSlover, Daniel; Mitchell, David L.

    2009-09-25T23:59:59.000Z

    PARAMETERIZING SIZE DISTRIBUTIONS IN ICE CLOUDS David L. Mitchell and Daniel H. DeSlover ABSTRACT An outstanding problem that contributes considerable uncertainty to Global Climate Model (GCM) predictions of future climate is the characterization of ice particle sizes in cirrus clouds. Recent parameterizations of ice cloud effective diameter differ by a factor of three, which, for overcast conditions, often translate to changes in outgoing longwave radiation (OLR) of 55 W m-2 or more. Much of this uncertainty in cirrus particle sizes is related to the problem of ice particle shattering during in situ sampling of the ice particle size distribution (PSD). Ice particles often shatter into many smaller ice fragments upon collision with the rim of the probe inlet tube. These small ice artifacts are counted as real ice crystals, resulting in anomalously high concentrations of small ice crystals (D < 100 µm) and underestimates of the mean and effective size of the PSD. Half of the cirrus cloud optical depth calculated from these in situ measurements can be due to this shattering phenomenon. Another challenge is the determination of ice and liquid water amounts in mixed phase clouds. Mixed phase clouds in the Arctic contain mostly liquid water, and the presence of ice is important for determining their lifecycle. Colder high clouds between -20 and -36 oC may also be mixed phase but in this case their condensate is mostly ice with low levels of liquid water. Rather than affecting their lifecycle, the presence of liquid dramatically affects the cloud optical properties, which affects cloud-climate feedback processes in GCMs. This project has made advancements in solving both of these problems. Regarding the first problem, PSD in ice clouds are uncertain due to the inability to reliably measure the concentrations of the smallest crystals (D < 100 µm), known as the “small mode”. Rather than using in situ probe measurements aboard aircraft, we employed a treatment of ice cloud optical properties formulated in terms of PSD parameters in combination with remote measurements of thermal radiances to characterize the small mode. This is possible since the absorption efficiency (Qabs) of small mode crystals is larger at 12 µm wavelength relative to 11 µm wavelength due to the process of wave resonance or photon tunneling more active at 12 µm. This makes the 12/11 µm absorption optical depth ratio (or equivalently the 12/11 µm Qabs ratio) a means for detecting the relative concentration of small ice particles in cirrus. Using this principle, this project tested and developed PSD schemes that can help characterize cirrus clouds at each of the three ARM sites: SGP, NSA and TWP. This was the main effort of this project. These PSD schemes and ice sedimentation velocities predicted from them have been used to test the new cirrus microphysics parameterization in the GCM known as the Community Climate Systems Model (CCSM) as part of an ongoing collaboration with NCAR. Regarding the second problem, we developed and did preliminary testing on a passive thermal method for retrieving the total water path (TWP) of Arctic mixed phase clouds where TWPs are often in the range of 20 to 130 g m-2 (difficult for microwave radiometers to accurately measure). We also developed a new radar method for retrieving the cloud ice water content (IWC), which can be vertically integrated to yield the ice water path (IWP). These techniques were combined to determine the IWP and liquid water path (LWP) in Arctic clouds, and hence the fraction of ice and liquid water. We have tested this approach using a case study from the ARM field campaign called M-PACE (Mixed-Phase Arctic Cloud Experiment). This research led to a new satellite remote sensing method that appears promising for detecting low levels of liquid water in high clouds typically between -20 and -36 oC. We hope to develop this method in future research.

  20. NEMA Distribution Transformers, CCE Overview and Update presentation...

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

    Distribution Transformers, CCE Overview and Update presentation, dated 05242011 NEMA Distribution Transformers, CCE Overview and Update presentation, dated 05242011 This...

  1. arbitrarily distributed samples: Topics by E-print Network

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

    Distributed Transaction Management Parallel Database Systems Distributed Object DBMS Chen, Yangjun 405 Quantum Metropolis Sampling CERN Preprints Summary: Quantum...

  2. alters mitochondrial distribution: Topics by E-print Network

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

    Distributed Transaction Management Parallel Database Systems Distributed Object DBMS Chen, Yangjun 286 Phylogeny, Recombination, and Mechanisms of Stepwise Mitochondrial...

  3. Voices of Experience | Insights into Advanced Distribution Management...

    Office of Environmental Management (EM)

    Voices of Experience | Insights into Advanced Distribution Management Systems (February 2015) Voices of Experience | Insights into Advanced Distribution Management Systems...

  4. Synthetic heparin-binding factor analogs

    DOE Patents [OSTI]

    Pena, Louis A. (Poquott, NY); Zamora, Paul O. (Gaithersburg, MD); Lin, Xinhua (Plainview, NY); Glass, John D. (Shoreham, NY)

    2010-04-20T23:59:59.000Z

    The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain, and preferably two peptide chains branched from a dipeptide branch moiety composed of two trifunctional amino acid residues, which peptide chain or chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a linker, which may be a hydrophobic linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.

  5. Assessment of International Work on Organizational Factors

    SciTech Connect (OSTI)

    Wall, Ian

    2002-06-01T23:59:59.000Z

    This report describes the concept of organizational factors and includes a consensus definition. It summarizes existing methods for assessing organizations from a safety culture perspective, for analyzing past incidents at plants to assess the role of safety culture, and for using such incident analysis to provide a database supporting organizational factors models. It describes existing methods that potentially could be extended to quantify organizational factors in a Probabilistic Safety Analysis. It concludes that no method is clearly superior for this purpose and recommends the organization of a workshop to clarify important issues prior to selecting a method.

  6. Modeling Potential DistributionModeling Potential Distribution of Common Plant Species inof Common Plant Species in

    E-Print Network [OSTI]

    that map unit. SSURGO, SMU W/ 4 Component Soils SSURGO, SMU W/ 4 Component Soils SWGap Land cover distribution within one SMU SWGap Land cover distribution within one SMU #12;Frequencyof

  7. Carbon Dioxide Emission Factors for Coal

    Reports and Publications (EIA)

    1994-01-01T23:59:59.000Z

    The Energy Information Administration (EIA) has developed factors for estimating the amount of carbon dioxide emitted, accounting for differences among coals, to reflect the changing "mix" of coal in U.S. coal consumption.

  8. Decision making process and factors routing

    E-Print Network [OSTI]

    Sun, Yichen, S.M. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    This research studies the decision-making process and the factors that affect truck routing. The data collection involved intercept interviews with truck drivers at three rest area and truck stops along major highways in ...

  9. Crop Management Factors: What is Important?

    E-Print Network [OSTI]

    Kastens, Terry L.; Dhuyvetter, Kevin C.; Nivens, Heather; Klinefelter, Danny A.

    1999-09-29T23:59:59.000Z

    Crop Management Factors: What is Important? Terry L. Kastens, Kevin C. Dhuyvetter, Heather Nivens and Danny Klinefelter* Defining Good Farm Management Economically, a well-managed farm is one that consistently makes greater prof- its than similarly...

  10. GPDs, form factors and Compton scattering

    E-Print Network [OSTI]

    P. Kroll

    2002-07-09T23:59:59.000Z

    The basic theoretical ideas of the handbag factorization and its application to wide-angle scattering reactions are reviewed. With regard to the present experimental program carried out at JLab, wide-angle Compton scattering is discussed in some detail.

  11. METHODOLOGY. TIME DISTRIBUTION OF MOSSBAUER SCATTERED RADIATION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    METHODOLOGY. TIME DISTRIBUTION OF MOSSBAUER SCATTERED RADIATION H. DROST, K. PALOW and G. WEYER distribution en temps du rayonnement reemis par un absorbant Mossbauer. Des effets d'interference dus a l la reponse de 1'absorbant. Les mesures ont et6 realisees avec le rayonnement Mossbauer a 14.4 keV du

  12. Distributed Probabilistic Model-Building Genetic Algorithm

    E-Print Network [OSTI]

    Dongarra, Jack

    is considered by Principal Component Analysis (PCA) when the off- springs are generated. The island modelDistributed Probabilistic Model-Building Genetic Algorithm Tomoyuki Hiroyasu1 , Mitsunori Miki1), Distributed PMBGA (DPMBGA), is proposed. In the DPMBGA, the correlation among the design variables

  13. Static Optimization of Distributed Tuplespace Message Communications

    E-Print Network [OSTI]

    Fenwick, Jay

    systems, such as workstation clusters, stubbornly remain in need of soft­ ware systems that provide. Distributed shared memory systems are maturing to fill this need. Tuplespace is a structured distributed difficult and error­prone. Software systems that provide effective, yet easy, utilization of this parallel

  14. Microgrids: distributed on-site generation

    E-Print Network [OSTI]

    Watson, Andrew

    : · Diversity of the load profile as a function of microgrid size; · Feasibility of accurate control of bothMicrogrids: distributed on-site generation Suleiman Abu-Sharkh, Rachel Li, Tom Markvart, Neil Ross for Climate Change Research Technical Report 22 #12;1 Microgrids: distributed on-site generation Tyndall

  15. Purity distribution for bipartite random pure states

    E-Print Network [OSTI]

    O. Giraud

    2007-10-10T23:59:59.000Z

    Analytic expressions for the probability density distribution of the linear entropy and the purity are derived for bipartite pure random quantum states. The explicit distributions for a state belonging to a product of Hilbert spaces of dimensions p and q are given for p=3 and any q>=3, as well as for p=q=4.

  16. The Beta distribution approach PAULA TATARU

    E-Print Network [OSTI]

    Schierup, Mikkel Heide

    Betaspikes The Beta distribution approach PAULA TATARU AARHUS UNIVERSITY Bioinformatics Research, mutation and selection Joint work with Asger Hobolth and Thomas Bataillon #12;Allele frequencies: the Beta;Allele frequencies: the Beta distribution approach Paula Tataru paula@birc.au.dk AARHUS UNIVERSITY

  17. Hydrogen Pathway Cost Distributions Jim Uihlein

    E-Print Network [OSTI]

    Components Feedstock Production Delivery Total Delivered Hydrogen Cost Biomass Central Pipeline Distribution produce hydrogen at 300 psi · Liquefaction or pipeline compression included in delivery · Delivery costsHydrogen Pathway Cost Distributions Jim Uihlein Fuel Pathways Integration Tech Team January 25

  18. Distributed Unification Seif Haridi & Peter Van Roy

    E-Print Network [OSTI]

    Bonaventure, Olivier

    k kkk p p p Initiate Win Lose Arrival Resume 10 Configurations and Executions · A configuration c)ux( true)ux( vu)vu( k k k k k = == p Primitive actions Bindings · In this way we map any distributed1 1 Distributed Unification Seif Haridi & Peter Van Roy SICS & UCL 2 Overview · Centralized

  19. WATER DISTRIBUTION SYSTEM OPERATION: APPLICATION OF

    E-Print Network [OSTI]

    Mays, Larry W.

    CHAPTER 5 WATER DISTRIBUTION SYSTEM OPERATION: APPLICATION OF SIMULATED ANNEALING Fred E. Goldman Arizona State University, Tempe, Arizona 5.1 INTRODUCTION The operation of water distribution systems affects the water quality in these systems. EPA regulations require that water quality be maintained

  20. Hybrid solar lighting distribution systems and components

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

    2011-07-05T23:59:59.000Z

    A hybrid solar lighting distribution system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates all components.

  1. National Radiobiology Archives Distributed Access user's manual

    SciTech Connect (OSTI)

    Watson, C.; Smith, S. (Pacific Northwest Lab., Richland, WA (United States)); Prather, J. (Linfield Coll., McMinnville, OR (United States))

    1991-11-01T23:59:59.000Z

    This User's Manual describes installation and use of the National Radiobiology Archives (NRA) Distributed Access package. The package consists of a distributed subset of information representative of the NRA databases and database access software which provide an introduction to the scope and style of the NRA Information Systems.

  2. Prognostics for the Maintenance of Distributed Systems

    E-Print Network [OSTI]

    Pencolé, Yannick

    but also higher level function prognosis. I. INTRODUCTION In the classical case, preventive maintenance of preventive maintenance for complex systems. In this sense, a distributed system can be split down into a setPrognostics for the Maintenance of Distributed Systems Pauline Ribot, Yannick Pencol´e and Michel

  3. VAXclusters: A Closely-Coupled Distributed System

    E-Print Network [OSTI]

    Anderson, Richard

    of VAX computers that operate as a single system. To achieve performance in a multicomputer environment designed. The software is a distributed version of the VAX/VMS operating system that uses a distributed efficient, for example, capable of sending and receiving 3000 messages per second on a VAX-11

  4. DAMS: Distributed Adaptive Metaheuristic Selection Bilel Derbel

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    DAMS: Distributed Adaptive Metaheuristic Selection Bilel Derbel Université Lille 1 LIFL ­ CNRS Metaheuristic Selection (DAMS) frame- work. DAMS is dedicated to adaptive optimization in distributed environments. Given a set of metaheuristics, the goal of DAMS is to coordinate their local execution

  5. Testing k-wise independent distributions

    E-Print Network [OSTI]

    Xie, Ning, Ph. D. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    A probability distribution over {0, 1}' is k-wise independent if its restriction to any k coordinates is uniform. More generally, a discrete distribution D over E1 x ... x E, is called (non-uniform) k-wise independent if ...

  6. Title: Global Distribution of Poverty Data Creator /

    E-Print Network [OSTI]

    Title: Global Distribution of Poverty Data Creator / Copyright Owner: Center for International: N/A Publication Date: N/A Coverage Date(s): 1993 - 1998 Updates: N/A Abstract: The Global Poverty Mapping Project seeks to enhance current understanding of the global distribution of poverty

  7. Fuel-Efficient Distributed Control for

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Fuel-Efficient Distributed Control for Heavy Duty Vehicle Platooning ASSAD ALAM Licentiate Thesis in Automatic Control Stockholm, Sweden 2011 #12;Fuel-Efficient Distributed Control for Heavy Duty Vehicle, vehicles can semi-autonomously travel at short intermediate spacings, effectively reducing congestion

  8. On quantum key distribution using ququarts

    SciTech Connect (OSTI)

    Kulik, S. P., E-mail: Sergei.Kulik@gmail.com; Shurupov, A. P. [Moscow State University (Russian Federation)

    2007-05-15T23:59:59.000Z

    A comparative analysis of quantum key distribution protocols using qubits and ququarts as information carriers is presented. Several schemes of incoherent attacks that can be used by an eavesdropper to obtain secret information are considered. The errors induced by the eavesdropper are analyzed for several key distribution protocols.

  9. Location Privacy and the Personal Distributed Environment

    E-Print Network [OSTI]

    Atkinson, Robert C

    Location Privacy and the Personal Distributed Environment Robert C Atkinson, Swee Keow Goo, James-- The Personal Distributed Environment is a new concept being developed within the Mobile VCE Core 3 research, wherever their location: ubiquitous access. Devices are co-ordinated by Device Management Entities (DMEs

  10. Factors affecting mother-child play

    E-Print Network [OSTI]

    Welch, Jennifer Colleen

    1993-01-01T23:59:59.000Z

    , factors that affect parents' ability to play with their children have not been widely addressed in the literature. As Webster-Stratton (1990) points out, little effort has been made to understand "the factors that influence parents' perceptions... support of competent parenting" (p. 215). Although there is not sufficient evidence to date to support this claim, it is clear that marital satisfaction and marital conflict should not be overlooked when researching parenting (e. g. , Brody, Pellegrini...

  11. Pion form factor with chirally improved fermions

    E-Print Network [OSTI]

    Stefano Capitani; Christof Gattringer; C. B. Lang

    2005-09-12T23:59:59.000Z

    We present results for Monte Carlo calculations of the electromagnetic vector and scalar form factors of the pion in a quenched simulation. We work at a lattice spacing of 0.15 fm and use two lattice volumes up to a spatial size of 2.4 fm. The pion form factors in the space-like region are determined for pion masses down to 340 MeV.

  12. Generalized binomial distribution in photon statistics

    E-Print Network [OSTI]

    Aleksey Ilyin

    2014-11-20T23:59:59.000Z

    The photon-number distribution between two parts of a given volume is found for an arbitrary photon statistics. This problem is related to the interaction of a light beam with a macroscopic device, for example a diaphragm, that separates the photon flux into two parts with known probabilities. To solve this problem, a Generalized Binomial Distribution (GBD) is derived that is applicable to an arbitrary photon statistics satisfying probability convolution equations. It is shown that if photons obey Poisson statistics then the GBD is reduced to the ordinary binomial distribution, whereas in the case of Bose-Einstein statistics the GBD is reduced to the Polya distribution. In this case, the photon spatial distribution depends on the phase-space volume occupied by the photons. This result involves a photon bunching effect, or collective behavior of photons that sharply differs from the behavior of classical particles. It is shown that the photon bunching effect looks similar to the quantum interference effect.

  13. On geometric factors for neutral particle analyzers

    SciTech Connect (OSTI)

    Stagner, L.; Heidbrink, W. W. [University of California-Irvine, Irvine, California 92697-4575 (United States)

    2014-11-15T23:59:59.000Z

    Neutral particle analyzers (NPA) detect neutralized energetic particles that escape from plasmas. Geometric factors relate the counting rate of the detectors to the intensity of the particle source. Accurate geometric factors enable quick simulation of geometric effects without the need to resort to slower Monte Carlo methods. Previously derived expressions [G. R. Thomas and D. M. Willis, “Analytical derivation of the geometric factor of a particle detector having circular or rectangular geometry,” J. Phys. E: Sci. Instrum. 5(3), 260 (1972); J. D. Sullivan, “Geometric factor and directional response of single and multi-element particle telescopes,” Nucl. Instrum. Methods 95(1), 5–11 (1971)] for the geometric factor implicitly assume that the particle source is very far away from the detector (far-field); this excludes applications close to the detector (near-field). The far-field assumption does not hold in most fusion applications of NPA detectors. We derive, from probability theory, a generalized framework for deriving geometric factors that are valid for both near and far-field applications as well as for non-isotropic sources and nonlinear particle trajectories.

  14. State Electricity Regulatory Policy and Distributed Resources: Accommodating Distributed Resources in Wholesale Markets

    SciTech Connect (OSTI)

    Weston, F.; Harrington, C.; Moskovitz, D.; Shirley, W.; Cowart, R.; Sedano, R.

    2002-10-01T23:59:59.000Z

    Distributed resources can provide cost-effective reliability and energy services - in many cases, obviating the need for more expensive investments in wires and central station electricity generating facilities. Given the unique features of distributed resources, the challenge facing policymakers today is how to restructure wholesale markets for electricity and related services so as to reveal the full value that distributed resources can provide to the electric power system (utility grid). This report looks at the functions that distributed resources can perform and examines the barriers to them. It then identifies a series of policy and operational approaches to promoting DR in wholesale markets. This report is one in the State Electricity Regulatory Policy and Distributed Resources series developed under contract to NREL (see Annual Technical Status Report of the Regulatory Assistance Project: September 2000-September 2001, NREL/SR-560-32733). Other titles in this series are: (1) Distributed Resource Distribution Credit Pilot Programs - Revealing the Value to Consumers and Vendors, NREL/SR-560-32499; (2) Distributed Resources and Electric System Reliability, NREL/SR-560-32498; (3) Distribution System Cost Methodologies for Distributed Generation, NREL/SR-560-32500; (4) Distribution System Cost Methodologies for Distributed Generation Appendices, NREL/SR-560-32501

  15. Resolving a distribution of charge into intrinsic multipole moments: A rankwise distributed multipole analysis

    E-Print Network [OSTI]

    Bourne, Philip E.

    Resolving a distribution of charge into intrinsic multipole moments: A rankwise distributed multipole analysis Apostol Gramada* and Philip E. Bourne Skaggs School of Pharmacy and Pharmaceutical multipole analysis of an arbitrary distribution of charge and its surrounding field. Using the superposition

  16. Loss Reduction of Power Distribution Network Using Optimum Size and Location of Distributed

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Generation Adnan Anwar, Student Member, IEEE, and H. R. Pota, Member, IEEE Abstract--Distributed generation be reduced significantly. Index Terms--Distributed generation, Optimum size, Optimum location, Power loss directly to utility distribution system. The insulation level of the machines may not synchronize

  17. Voltage Control of Distribution Networks with Distributed Generation using Reactive Power

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Voltage Control of Distribution Networks with Distributed Generation using Reactive Power to control voltage of distribution networks with DG using reactive power compensation approach. In this paper profile within the specified limits, it is essential to regulate the reactive power of the compensators

  18. The integration of renewable energy sources into electric power distribution systems. Volume 1: National assessment

    SciTech Connect (OSTI)

    Barnes, P.R.; Van Dyke, J.W. [Oak Ridge National Lab., TN (United States); Tesche, F.M. [6714 Norway Road, Dallas, TX (United States); Zaininger, H.W. [Zaininger Engineering Co., San Jose, CA (United States)

    1994-06-01T23:59:59.000Z

    Renewable energy technologies such as photovoltaic, solar thermal electricity, and wind turbine power are environmentally beneficial sources of electric power generation. The integration of renewable energy sources into electric power distribution systems can provide additional economic benefits because of a reduction in the losses associated with transmission and distribution lines. Benefits associated with the deferment of transmission and distribution investment may also be possible for cases where there is a high correlation between peak circuit load and renewable energy electric generation, such as photovoltaic systems in the Southwest. Case studies were conducted with actual power distribution system data for seven electric utilities with the participation of those utilities. Integrating renewable energy systems into electric power distribution systems increased the value of the benefits by about 20 to 55% above central station benefits in the national regional assessment. In the case studies presented in Vol. II, the range was larger: from a few percent to near 80% for a case where costly investments were deferred. In general, additional savings of at least 10 to 20% can be expected by integrating at the distribution level. Wind energy systems were found to be economical in good wind resource regions, whereas photovoltaic systems costs are presently a factor of 2.5 too expensive under the most favorable conditions.

  19. Transformation of the Bennet distribution in a rarefied gas

    SciTech Connect (OSTI)

    Movsesyants, Yu.B.; Chikhachev, A.S.

    1986-09-01T23:59:59.000Z

    The usual Bennet distribution of particles in a beam is characterized by a density which decreases comparatively slowly with increasing radius. This is a negative factor in the solution of problems associated with the formation of a thin, powerful, quasistationary, relativistic electron beam. Under sufficiently high pressure of the residual gas the effect of the current of secondary electrons of the plasma, produced by the ionization of the gas by the beam, on the state of the main beam must be taken into account. As a result of this effect, an equilibrium state of the relativistic beam with a drop in the particle density deeper than in the case of the Bennet distribution toward the periphery of the beam can form. For sufficiently high currents in the beam, say in excess of 1 kilo amp, the average Larmor radius of the electrons of the secondary plasma is shorter than the mean-free-path length and the flow of secondary electrons acquires, owing to the magnetization, a longitudinal component which can change the parameters of the beam if the secondary-electron current is comparable to the beam current. This paper examines these phenomena in a kinetic description of the beam and a magnetohydrodynamic description of the plasma.

  20. Testing nuclear parton distributions with pA collisions at the LHC

    E-Print Network [OSTI]

    Paloma Quiroga-Arias; Jose Guilherme Milhano; Urs Achin Wiedemann

    2010-02-12T23:59:59.000Z

    Global perturbative QCD analyses, based on large data sets from electron-proton and hadron collider experiments, provide tight constraints on the parton distribution function (PDF) in the proton. The extension of these analyses to nuclear parton distributions (nPDF) has attracted much interest in recent years. nPDFs are needed as benchmarks for the characterization of hot QCD matter in nucleus-nucleus collisions, and attract further interest since they may show novel signatures of non-linear density-dependent QCD evolution. However, it is not known from first principles whether the factorization of long-range phenomena into process-independent parton distribution, which underlies global PDF extractions for the proton, extends to nuclear effects. As a consequence, assessing the reliability of nPDFs for benchmark calculations goes beyond testing the numerical accuracy of their extraction and requires phenomenological tests of the factorization assumption. Here we argue that a proton-nucleus collision program at the LHC would provide a set of measurements allowing for unprecedented tests of the factorization assumption underlying global nPDF fits.

  1. An enhanced sector integration model for output and dose distribution calculation of irregular concave shaped electron beams

    SciTech Connect (OSTI)

    Gajewski, Romuald [Department of Medical Physics, Sydney West Cancer Network, Westmead, New South Wales 2145 (Australia)

    2009-07-15T23:59:59.000Z

    A comprehensive method of output factor and dose distribution calculation for electron beams has been developed. It allows one to calculate the output factors and isodose distributions in water of arbitrary shaped electron fields with excellent accuracy even for the cases of concaved, small, elongated beams, and extended source to surface distances (SSDs). The method requires two sets of data: Depth dose distribution per monitor unit for circular cutouts and depth dose distributions per monitor unit for circular blocks (plugs), both for two SSDs, one reference of 100 cm and second extended one. The method has been extensively tested using a combination of different irregular cutouts and various SSDs for the 6 and 9 MeV electron beams. The calculated values agreed with the measured data well within 1% for output factors and below 1 for {gamma} (gamma test) for isodose distributions. The computer program has been developed to facilitate the method for practical application. The method has been used for almost 8 years considerably cutting workload in the department.

  2. Odd orders in Shor's factoring algorithm

    E-Print Network [OSTI]

    Thomas Lawson

    2015-01-13T23:59:59.000Z

    Shor's factoring algorithm (SFA) finds the prime factors of a number, $N=p_1 p_2$, exponentially faster than the best known classical algorithm. Responsible for the speed-up is a subroutine called the quantum order finding algorithm (QOFA) which calculates the order -- the smallest integer, $r$, satisfying $a^r \\mod N =1$, where $a$ is a randomly chosen integer coprime to $N$ (meaning their greatest common divisor is one, $\\gcd(a, N) =1$). Given $r$, and with probability not less than $1/2$, the factors are given by $p_1 = \\gcd (a^{\\frac{r}{2}} - 1, N)$ and $p_2 = \\gcd (a^{\\frac{r}{2}} + 1, N)$. For odd $r$ it is assumed the factors cannot be found (since $a^{\\frac{r}{2}}$ is not generally integer) and the QOFA is relaunched with a different value of $a$. But a recent paper [E. Martin-Lopez: Nat Photon {\\bf 6}, 773 (2012)] noted that the factors can sometimes be found from odd orders if the coprime is square. This raises the question of improving SFA's success probability by considering odd orders. We show that an improvement is possible, though it is small. We present two techniques for retrieving the order from apparently useless runs of the QOFA: not discarding odd orders; and looking out for new order finding relations in the case of failure. In terms of efficiency, using our techniques is equivalent to avoiding square coprimes and disregarding odd orders, which is simpler in practice. Even still, our techniques may be useful in the near future, while demonstrations are restricted to factoring small numbers. The most convincing demonstrations of the QOFA are those that return a non-power-of-two order, making odd orders that lead to the factors attractive to experimentalists.

  3. Parton content of the nucleon from distribution amplitudes and transition distribution amplitudes

    E-Print Network [OSTI]

    B. Pasquini; M. Pincetti; S. Boffi

    2009-07-06T23:59:59.000Z

    The nucleon distribution amplitudes and the nucleon-to-pion transition distribution amplitudes are investigated at leading twist within the frame of a light-cone quark model. The distribution amplitudes probe the three-quark component of the nucleon light-cone wave function, while higher order components in the Fock-space expansion of the nucleon state are essential to describe the nucleon-to-pion transition distribution amplitudes. Adopting a meson-cloud model of the nucleon the nucleon-to-pion transition distribution amplitudes are calculated for the first time.

  4. Multicriteria optimization of the spatial dose distribution

    SciTech Connect (OSTI)

    Schlaefer, Alexander [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562, Germany and Institute of Medical Technology, Hamburg University of Technology, Hamburg 21073 (Germany)] [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562, Germany and Institute of Medical Technology, Hamburg University of Technology, Hamburg 21073 (Germany); Viulet, Tiberiu [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562 (Germany)] [Medical Robotics Group, Universität zu Lübeck, Lübeck 23562 (Germany); Muacevic, Alexander; Fürweger, Christoph [European CyberKnife Center Munich, Munich 81377 (Germany)] [European CyberKnife Center Munich, Munich 81377 (Germany)

    2013-12-15T23:59:59.000Z

    Purpose: Treatment planning for radiation therapy involves trade-offs with respect to different clinical goals. Typically, the dose distribution is evaluated based on few statistics and dose–volume histograms. Particularly for stereotactic treatments, the spatial dose distribution represents further criteria, e.g., when considering the gradient between subregions of volumes of interest. The authors have studied how to consider the spatial dose distribution using a multicriteria optimization approach.Methods: The authors have extended a stepwise multicriteria optimization approach to include criteria with respect to the local dose distribution. Based on a three-dimensional visualization of the dose the authors use a software tool allowing interaction with the dose distribution to map objectives with respect to its shape to a constrained optimization problem. Similarly, conflicting criteria are highlighted and the planner decides if and where to relax the shape of the dose distribution.Results: To demonstrate the potential of spatial multicriteria optimization, the tool was applied to a prostate and meningioma case. For the prostate case, local sparing of the rectal wall and shaping of a boost volume are achieved through local relaxations and while maintaining the remaining dose distribution. For the meningioma, target coverage is improved by compromising low dose conformality toward noncritical structures. A comparison of dose–volume histograms illustrates the importance of spatial information for achieving the trade-offs.Conclusions: The results show that it is possible to consider the location of conflicting criteria during treatment planning. Particularly, it is possible to conserve already achieved goals with respect to the dose distribution, to visualize potential trade-offs, and to relax constraints locally. Hence, the proposed approach facilitates a systematic exploration of the optimal shape of the dose distribution.

  5. Determining size-specific emission factors for environmental tobacco smoke particles

    SciTech Connect (OSTI)

    Klepeis, Neil E.; Apte, Michael G.; Gundel, Lara A.; Sextro, Richard G.; Nazaroff, William W.

    2002-07-07T23:59:59.000Z

    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 20 m{sup 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 integrating each size distribution, was 0.2-0.7 mg/min for cigars and 0.7-0.9 mg/min for cigarettes.

  6. Linear phase distribution of acoustical vortices

    SciTech Connect (OSTI)

    Gao, Lu; Zheng, Haixiang [Key Laboratory of Optoelectronics of Jiangsu Province, School of Physics Science and Technology, Nanjing Normal University, 1 Wenyuan Road, Xianlin District, Nanjing 210023 (China); Ma, Qingyu, E-mail: maqingyu@njnu.edu.cn [Key Laboratory of Optoelectronics of Jiangsu Province, School of Physics Science and Technology, Nanjing Normal University, 1 Wenyuan Road, Xianlin District, Nanjing 210023 (China); Laboratory of Modern Acoustics of MOE, Nanjing University, Nanjing 210093 (China); Tu, Juan; Zhang, Dong [Laboratory of Modern Acoustics of MOE, Nanjing University, Nanjing 210093 (China)

    2014-07-14T23:59:59.000Z

    Linear phase distribution of phase-coded acoustical vortices was theoretically investigated based on the radiation theory of point source, and then confirmed by experimental measurements. With the proposed criterion of positive phase slope, the possibility of constructing linear circular phase distributions is demonstrated to be determined by source parameters. Improved phase linearity can be achieved at larger source number, lower frequency, smaller vortex radius, and/or longer axial distance. Good agreements are observed between numerical simulations and measurement results for circular phase distributions. The favorable results confirm the feasibility of precise phase control for acoustical vortices and suggest potential applications in particle manipulation.

  7. Distributed Bragg Reflectors With Reduced Optical Absorption

    DOE Patents [OSTI]

    Klem, John F. (Albuquerque, NM)

    2005-08-16T23:59:59.000Z

    A new class of distributed Bragg reflectors has been developed. These distributed Bragg reflectors comprise interlayers positioned between sets of high-index and low-index quarter-wave plates. The presence of these interlayers is to reduce photon absorption resulting from spatially indirect photon-assisted electronic transitions between the high-index and low-index quarter wave plates. The distributed Bragg reflectors have applications for use in vertical-cavity surface-emitting lasers for use at 1.55 .mu.m and at other wavelengths of interest.

  8. Hadronic form factors in kaon photoproduction

    SciTech Connect (OSTI)

    Syukurilla, L., E-mail: tmart@fisika.ui.ac.id; Mart, T., E-mail: tmart@fisika.ui.ac.id [Department Fisika, FMIPA, Universitas Indonesia, Depok, 164242 (Indonesia)

    2014-09-25T23:59:59.000Z

    We have revisited the effect of hadronic form factors in kaon photoproduction process by utilizing an isobaric model developed for kaon photoproduction off the proton. The model is able to reproduce the available experimental data nicely as well as to reveal the origin of the second peak in the total cross section, which was the main source of confusion for decades. Different from our previous study, in the present work we explore the possibility of using different hadronic form factors in each of the K?N vertices. The use of different hadronic form factors, e.g. dipole, Gaussian, and generalized dipole, has been found to produce a more flexible isobar model, which can provide a significant improvement in the model.

  9. Factors controlling Simpson Group production in central Oklahoma

    SciTech Connect (OSTI)

    Smith, P.W.

    1993-09-01T23:59:59.000Z

    The distribution of oil production from within the Simpson Group has been considered enigmatic because all of the sandstone members are present throughout the study area, but some fields produce from all of the sandstone members and others produce from only on horizon. The Simpson shales are not capable of generating hydrocarbons and the oil produced from the Simpson Group probably originated from the Devonian/Mississippian Woodford Shale. The McClain County fault juxtaposed the Woodford shale with the Simpson Group, which enabled lateral oil migration from the Woodford into the Simpson Group sandstones. Also, tortuous migration pathways allowed Woodford oil to ultimately accumulate in Simpson reservoirs which involve downthrown younger rocks adjacent to upthrown older rocks. Slight structural movements occurred contemporaneously with the deposition of the Simpson Group creating semi-parallel northeast-southwest-oriented thick and thin trends. Local structural movements were active during part or all of Simpson deposition. This created stratigraphic variations in the individual Simpson Group formations which cause the apex of a field to migrate (or even vanish) with depth. Consequently, lower Simpson structures may not be reflected by upper Simpson structures and, conversely, upper Simpson structures may not continue with depth. Variations in Viola deposition enhanced the vertical discontinuity of structures within the study area so that mapped Viola structures may not reflect underlying Simpson structures. Furthermore, a dramatic change in the orientation of the structural grain began to appear in the late Ordovician (Viola). Subsequent movements enhanced this later structural orientation, producing two acute structural trends that control the entrapment of oil. This study demonstrates that the dual structural imprint is probably the single most important factor in controlling the distribution and accumulation of hydrocarbons within the study area.

  10. Abatement of Air Pollution: Distributed Generators (Connecticut)

    Broader source: Energy.gov [DOE]

    For the purpose of these regulations, a distributed generator is defined as any equipment that converts primary fuel, including fossil fuel and renewable fuel, into electricity or electricity and...

  11. Charged particle rapidity distributions at relativistic energies 

    E-Print Network [OSTI]

    Lin, ZW; Pal, S.; Ko, Che Ming; Li, Ba; Zhang, B.

    2001-01-01T23:59:59.000Z

    Using a multiphase transport model (AMPT), which includes both initial partonic and final hadronic interactions, we study the rapidity distributions of charged particles such as protons, antiprotons, pions, and kaons in heavy ion collisions at RHIC...

  12. Air Distribution Effectiveness for Different Mechanical Ventilation

    E-Print Network [OSTI]

    LBNL-62700 Air Distribution Effectiveness for Different Mechanical Ventilation Systems Max H Effectiveness for Different Mechanical Ventilation Systems Max H. Sherman and Iain S. Walker Lawrence Berkeley National Laboratory, USA ABSTRACT The purpose of ventilation is to dilute indoor contaminants

  13. Circular, confined distribution for charged particle beams

    DOE Patents [OSTI]

    Garnett, R.W.; Dobelbower, M.C.

    1995-11-21T23:59:59.000Z

    A charged particle beam line is formed with magnetic optics that manipulate the charged particle beam to form the beam having a generally rectangular configuration to a circular beam cross-section having a uniform particle distribution at a predetermined location. First magnetic optics form a charged particle beam to a generally uniform particle distribution over a square planar area at a known first location. Second magnetic optics receive the charged particle beam with the generally square configuration and affect the charged particle beam to output the charged particle beam with a phase-space distribution effective to fold corner portions of the beam toward the core region of the beam. The beam forms a circular configuration having a generally uniform spatial particle distribution over a target area at a predetermined second location. 26 figs.

  14. Circular, confined distribution for charged particle beams

    DOE Patents [OSTI]

    Garnett, Robert W. (Los Alamos, NM); Dobelbower, M. Christian (Toledo, OH)

    1995-01-01T23:59:59.000Z

    A charged particle beam line is formed with magnetic optics that manipulate the charged particle beam to form the beam having a generally rectangular configuration to a circular beam cross-section having a uniform particle distribution at a predetermined location. First magnetic optics form a charged particle beam to a generally uniform particle distribution over a square planar area at a known first location. Second magnetic optics receive the charged particle beam with the generally square configuration and affect the charged particle beam to output the charged particle beam with a phase-space distribution effective to fold corner portions of the beam toward the core region of the beam. The beam forms a circular configuration having a generally uniform spatial particle distribution over a target area at a predetermined second location.

  15. Coal distribution, January--June 1991

    SciTech Connect (OSTI)

    Not Available

    1991-10-21T23:59:59.000Z

    The Coal Distribution report provides information on coal production, distribution, and stocks in the United States to a wide audience including Congress, Federal and State agencies, the coal industry, and the general public. The data in this report are collected and published by the Energy Information Administration (EIA) to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275, Sections 5 and 13, as amended). This issue presents information for January through June 1991. Coal distribution data are shown (in Tables 1--34) by coal-producing Sate of origin, consumer use, method of transportation, and State of destination. All data in this report were collected by the EIA on Form EIA-6, Coal Distribution Report.'' A copy of the form and the instructions for filing appear in Appendix B. All data in this report for 1991 are preliminary. Data for previous years are final. 6 figs., 34 tabs.

  16. Distribution of phylogenetic diversity under random extinction

    E-Print Network [OSTI]

    Beata Faller; Fabio Pardi; Mike Steel

    2007-08-02T23:59:59.000Z

    Phylogenetic diversity is a measure for describing how much of an evolutionary tree is spanned by a subset of species. If one applies this to the (unknown) subset of current species that will still be present at some future time, then this `future phylogenetic diversity' provides a measure of the impact of various extinction scenarios in biodiversity conservation. In this paper we study the distribution of future phylogenetic diversity under a simple model of extinction (a generalized `field of bullets' model). We show that the distribution of future phylogenetic diversity converges to a normal distribution as the number of species grows (under mild conditions, which are necessary). We also describe an algorithm to compute the distribution efficiently, provided the edge lengths are integral, and briefly outline the significance of our findings for biodiversity conservation.

  17. Integration in superspace using distribution theory

    E-Print Network [OSTI]

    K. Coulembier; H. De Bie; F. Sommen

    2009-09-14T23:59:59.000Z

    In this paper, a new class of Cauchy integral formulae in superspace is obtained, using formal expansions of distributions. This allows to solve five open problems in the study of harmonic and Clifford analysis in superspace.

  18. Wigner spacing distribution in classical mechanics

    E-Print Network [OSTI]

    Jamal Sakhr

    2014-07-09T23:59:59.000Z

    The Wigner spacing distribution has a long and illustrious history in nuclear physics and in the quantum mechanics of classically chaotic systems. In this paper, a long-overlooked connection between the Wigner distribution and classical chaos in two-degree-of-freedom (2D) conservative systems is introduced. In the specific context of fully chaotic 2D systems, the hypothesis that typical pseudotrajectories of a canonical Poincar\\'{e} map have a Wignerian nearest-neighbor spacing distribution (NNSD), is put forward and tested. Employing the 2D circular stadium billiard as a generic test case, the NNSD of a typical pseudotrajectory of the Birkhoff map is shown to be in excellent agreement with the Wigner distribution. The relevance of the higher-order Wigner surmises from random matrix theory are also illustrated.

  19. Ecologic and geographic distribution of filovirus disease

    E-Print Network [OSTI]

    Peterson, A. Townsend; Bauer, John T.; Mills, James N.

    2004-01-01T23:59:59.000Z

    We used ecologic niche modeling of outbreaks and sporadic cases of filovirus-associated hemorrhagic fever (HF) to provide a large-scale perspective on the geographic and ecologic distributions of Ebola and Marburg viruses. We predicted...

  20. Approximation algorithms for distributed and selfish agents

    E-Print Network [OSTI]

    Mirrokni, Vahab S

    2005-01-01T23:59:59.000Z

    Many real-world systems involve distributed and selfish agents who optimize their own objective function. In these systems, we need to design efficient mechanisms so that system-wide objective is optimized despite agents ...

  1. Understanding Parton Distributions from Lattice QCD

    E-Print Network [OSTI]

    Dru B. Renner

    2005-08-04T23:59:59.000Z

    I examine the past lattice QCD calculations of three representative observables, the transverse quark distribution, momentum fraction, and axial charge, and emphasize the prospects for not only quantitative comparison with experiment but also qualitative understanding of QCD.

  2. Generalized Parton Distributions from Lattice QCD

    E-Print Network [OSTI]

    D. B. Renner

    2005-01-05T23:59:59.000Z

    I review the LHPC Collaboration's lattice QCD calculations of the generalized parton distributions of the nucleon and highlight those aspects of nucleon structure best illuminated by lattice QCD, the nucleon's spin decomposition and transverse quark structure.

  3. Distributed PV Permitting and Inspection Processes

    Broader source: Energy.gov [DOE]

    This presentation summarizes case studies of the time and cost involved in the distributed PV permitting and inspection process in three Solar America Cities, Austin, Portland, and Salt Lake City.

  4. Resilient Core Networks for Energy Distribution

    SciTech Connect (OSTI)

    Kuntze, Nicolai; Rudolph, Carsten; Leivesley, Sally; Manz, David O.; Endicott-Popovsky, Barbara E.

    2014-07-28T23:59:59.000Z

    Abstract—Substations and their control are crucial for the availability of electricity in today’s energy distribution. Ad- vanced energy grids with Distributed Energy Resources require higher complexity in substations, distributed functionality and communication between devices inside substations and between substations. Also, substations include more and more intelligent devices and ICT based systems. All these devices are connected to other systems by different types of communication links or are situated in uncontrolled environments. Therefore, the risk of ICT based attacks on energy grids is growing. Consequently, security measures to counter these risks need to be an intrinsic part of energy grids. This paper introduces the concept of a Resilient Core Network to interconnected substations. This core network provides essen- tial security features, enables fast detection of attacks and allows for a distributed and autonomous mitigation of ICT based risks.

  5. Convex Models of Distribution System Reconfiguration

    E-Print Network [OSTI]

    Taylor, Joshua A.

    We derive new mixed-integer quadratic, quadratically constrained, and second-order cone programming models of distribution system reconfiguration, which are to date the first formulations of the ac problem that have convex, ...

  6. Evaluation of alternative superelevation distribution methods

    E-Print Network [OSTI]

    Labrador, Ramon

    1998-01-01T23:59:59.000Z

    distribution methodologies currently used in the United States do not provide a clear understanding of the operational characteristics of these methods. These methodologies were developed on the 1930's, 1940's, and 1950's. Since then, roadway, pavement...

  7. Language design for distributed stream processing

    E-Print Network [OSTI]

    Newton, Ryan Rhodes, 1980-

    2009-01-01T23:59:59.000Z

    Applications that combine live data streams with embedded, parallel, and distributed processing are becoming more commonplace. WaveScript is a domain-specific language that brings high-level, type-safe, garbage-collected ...

  8. Runtime Monitoring of Distributed Systems Adrian Francalanza

    E-Print Network [OSTI]

    Pace, Gordon J.

    As systems become more complex, monolithic architec- tures are becoming less common, and distributed-based and service-oriented systems readily fit in the above architecture, as do systems adhering to the Enterpris

  9. Runtime Monitoring of Distributed Systems Adrian Francalanza

    E-Print Network [OSTI]

    Francalanza, Adrian

    As systems become more complex, monolithic architec- tures are becoming less common, and distributed-based and service-oriented systems readily fit in the above architecture, as do systems adhering to the Enterprise

  10. Distributed generation - the fuel processing example

    SciTech Connect (OSTI)

    Victor, R.A. [Praxair, Inc., Tonawanda, NY (United States); Farris, P.J.; Maston, V. [International Fuel Cells Corp., South Windsor, CT (United States)

    1996-12-31T23:59:59.000Z

    The increased costs of transportation and distribution are leading many commercial and industrial firms to consider the on-site generation for energy and other commodities used in their facilities. This trend has been accelerated by the development of compact, efficient processes for converting basic raw materials into finished services at the distributed sites. Distributed generation with the PC25{trademark} fuel cell power plant is providing a new cost effective technology to meet building electric and thermal needs. Small compact on-site separator systems are providing nitrogen and oxygen to many industrial users of these gases. The adaptation of the fuel processing section of the PC25 power plant for on-site hydrogen generation at industrial sites extends distributed generation benefits to the users of industrial hydrogen.

  11. Voltage Management of Networks with Distributed Generation. 

    E-Print Network [OSTI]

    O'Donnell, James

    2008-01-01T23:59:59.000Z

    At present there is much debate about the impacts and benefits of increasing the amount of generation connected to the low voltage areas of the electricity distribution network. The UK government is under political ...

  12. Center for Excellence in Logistics and Distribution

    E-Print Network [OSTI]

    Noble, James S.

    Center for Excellence in Logistics and Distribution (CELDi) James S. Noble, MU Site Director Logistics Network Design in a PBL Environment The Boeing Company Research Team: James Noble (PI), Wooseung · Reverse logistics network evaluation tool · Network configuration · Network operation Broader

  13. Visualizing Distributions of Covariance Matrices Tomoki Tokudaa

    E-Print Network [OSTI]

    Gelman, Andrew

    Background Covariance matrices and their corresponding distributions play an important role in statis- tics of Education Science grant #ED-GRANTS-032309-005, Institute of Education Science grant #R305D090006-09A

  14. Distributed Markov Chains Ratul Saha1

    E-Print Network [OSTI]

    Distributed Markov Chains Ratul Saha1 , Javier Esparza2 , Sumit Kumar Jha3 , Madhavan Mukund4. #12;2 R. Saha, J. Esparza, S. K. Jha, M. Mukund and P. S. Thiagarajan The synchronizations

  15. Bacterial Community Structure in Geographically Distributed Biological

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    Bacterial Community Structure in Geographically Distributed Biological Wastewater Treatment of the microbial communities within biological wastewater treatment reactors is incomplete due to limitations microbial community composition in five biological wastewater treatment reactors in China and the United

  16. The terminal bulk Lorentz factor of relativistic electron-positron jets

    E-Print Network [OSTI]

    N. Renaud; G. Henri

    1998-04-17T23:59:59.000Z

    We present numerical simulation of bulk Lorentz factor of relativistic electron-positron jet driven by Compton rocket effect from accretion disc radiation. The plasma is assumed to have a power-law distribution $n_{e}(\\gamma) \\propto \\gamma^{-s}$ whith $1 terminal bulk Lorentz factor in the case of supermassive black holes relevant to AGN and stellar black holes relevant to galactic microquasars. In the latter case, Klein-Nishina cross section effect are more important, and induce terminal bulk Lorentz factor smaller than in the former case. Our result are in good agreement with bulk Lorentz factors observed in galactic sources (GRS1915+105, GROJ1655-40) and extragalactic ones. Differences in scattered radiation and acceleration mechanism efficiency in AGN environment can be responsible for the variety of relativistic motion in those objects. We also take into account the influence of the size of the accretion disc; if the external radius is small enough, the bulk Lorentz factor can be as high as 60.

  17. The terminal bulk Lorentz factor of relativistic electron-positron jet

    E-Print Network [OSTI]

    N. Renaud; G. Henri

    1997-06-16T23:59:59.000Z

    We present numerical simulation of bulk Lorentz factor of relativistic electron positron jet driven by Compton rocket effect from accretion disk radiation. The plasma is assumed to have a power-law energy distribution and is continuously reheated to compensate for radiation losses. We include Klein-Nishina (hereafter KN) corrections, and study the role of energy upper cut-off, spectral index, and source compactness. We determine terminal bulk Lorentz factor in the case of supermassive black holes relevant to AGN and stellar black holes relevant to galactic microquasars. In the latter case, effects of KN corrections are more important and induce terminal bulk Lorentz factor smaller than in the former case. The result can explain the low bulk Lorentz factors for galactic sources (GRS1915+105, GROJ1655-40) compared to extragalactic ones. We also take into account the influence of the size of the accretion disk; if the external radius is small enough, the bulk Lorentz factor can be as high as 60, which is comparable to the values needed to explain extragalactic gamma-ray bursts.

  18. Probability distribution of the vacuum energy density

    SciTech Connect (OSTI)

    Duplancic, Goran; Stefancic, Hrvoje [Theoretical Physics Division, Rudjer Boskovic Institute, P.O. Box 180, HR-10002 Zagreb (Croatia); Glavan, Drazen [Department of Physics, Faculty of Science, University of Zagreb, P.O. Box 331, HR-10002 Zagreb (Croatia)

    2010-12-15T23:59:59.000Z

    As the vacuum state of a quantum field is not an eigenstate of the Hamiltonian density, the vacuum energy density can be represented as a random variable. We present an analytical calculation of the probability distribution of the vacuum energy density for real and complex massless scalar fields in Minkowski space. The obtained probability distributions are broad and the vacuum expectation value of the Hamiltonian density is not fully representative of the vacuum energy density.

  19. On parton distributions in a photon gas

    E-Print Network [OSTI]

    I. Alikhanov

    2009-06-19T23:59:59.000Z

    In some cases it may be useful to know parton distributions in a photon gas. This may be relevant, e.g., for the analysis of interactions of high energy cosmic ray particles with the cosmic microwave background radiation. The latter can be considered as a gas of photons with an almost perfect blackbody spectrum. An approach to finding such parton distributions is described. The survival probability of ultra-high energy neutrinos traveling through this radiation is calculated.

  20. Explaining species distribution patterns through hierarchical modeling

    E-Print Network [OSTI]

    Gelfand, Alan E.; Silander, John A., Jr.; Wu, Shanshan; Latimer, Andrew; Lewis, Paul O.; Rebelo, Anthony G.; Holder, Mark T.

    2006-01-01T23:59:59.000Z

    Bayesian Analysis (2006) 1, Number 1, pp. 41–92 Explaining Species Distribution Patterns through Hierarchical Modeling Alan E. Gelfand?, John A. Silander Jr†., Shanshan Wu‡, Andrew Latimer§, Paul O. Lewis¶, Anthony G. Rebelo? and Mark Holder..., spatial logistic re- gression, species range, species richness. 1 Introduction Ecologists increasingly use species distribution models to address theoretical and practi- cal issues including predicting the response of species to climate change (Midgley et...