National Library of Energy BETA

Sample records for big stick rough

  1. Stick shift

    E-Print Network [OSTI]

    Parness, Aaron J. (Aaron Joseph), 1981-

    2004-01-01

    Stick Shift is a novel that has undergone several rounds of significant revision. Scott, the book's main character, is a sarcastic American who travels to England to move in with an ex-girlfriend. He experiences all of the ...

  2. Miniature Videoprobe Hockey Stick Delivery System

    SciTech Connect (OSTI)

    Hale, Lester R.; McMurry, Kyle M.

    1998-06-18

    The present invention is a miniature videoprobe system having a probe termination box, a strong back, and a videoprobe housing. The videoprobe system is able to obtain images from a restricted space at least as small as 0.125 inches while producing a high quality image. The strong back has a hockey stick shape with the probe termination box connecting to the top of the handle-like portion of the hockey stick and the videoprobe housing attaching to the opposite end or nose of the hockey stick shape. The videoprobe housing has a roughly arrowhead shape with two thin steel plates sandwiching the internal components there between. The internal components are connected in series to allow for a minor dimension of the videoprobe housing of 0.110 inches. The internal components include an optics train, a CCD chip, and an electronics package. An electrical signal is transmitted from the electronics package through wiring within an internal channel of the strong back to the probe termination box. The strong back has milled into it multiple internal channels for facilitating the transfer of information, items, or devices between the probe termination box and the videoprobe housing.

  3. Big Science

    ScienceCinema (OSTI)

    Dr. Thomas Zacharia

    2010-01-08

    Big science seeks big solutions for the most urgent problems of our times. Video courtesy Cray, Inc.

  4. Quantum Sticking of Atoms on Membranes

    E-Print Network [OSTI]

    Dennis P. Clougherty

    2014-12-05

    A continuum model for low-energy physisorption on a membrane under tension is proposed and studied with variational mean-field theory. A discontinuous change in the energy-dependent sticking coefficient is predicted under certain conditions. This singularity is a result of the bosonic orthogonality catastrophe of the vibrational states of the membrane. The energy-dependent sticking coefficient is predicted to have exponential scaling in 1/E above the singularity. The application of this model to the quantum sticking of cold hydrogen to suspended graphene is discussed. The model predicts that a beam of atomic hydrogen can be completely reflected by suspended graphene at ultralow energies.

  5. Strong dynamical effects during stick-slip adhesive peeling

    E-Print Network [OSTI]

    Marie-Julie Dalbe; Stéphane Santucci; Pierre-Philippe Cortet; Loïc Vanel

    2013-11-14

    We consider the classical problem of the stick-slip dynamics observed when peeling a roller adhesive tape at a constant velocity. From fast imaging recordings, we extract the dependencies of the stick and slip phases durations with the imposed peeling velocity and peeled ribbon length. Predictions of Maugis and Barquins [in Adhesion 12, edited by K.W. Allen, Elsevier ASP, London, 1988, pp. 205--222] based on a quasistatic assumption succeed to describe quantitatively our measurements of the stick phase duration. Such model however fails to predict the full stick-slip cycle duration, revealing strong dynamical effects during the slip phase.

  6. The sticking of atomic hydrogen on amorphous water ice

    SciTech Connect (OSTI)

    Veeraghattam, Vijay K.; Manrodt, Katie; Lewis, Steven P.; Stancil, P. C. E-mail: lewis@physast.uga.edu

    2014-07-20

    Using classical molecular dynamics, we have simulated the sticking and scattering process of a hydrogen atom on an amorphous ice film to predict the sticking probability of hydrogen on ice surfaces. A wide range of initial kinetic energies of the incident hydrogen atom (10 K-600 K) and two different ice temperatures (10 K and 70 K) were used to investigate this fundamental process in interstellar chemistry. We report here the sticking probability of atomic hydrogen as a function of incident kinetic energy, gas temperature, and substrate temperature, which can be used in astrophysical models. The current results are compared to previous theoretical and experimental studies that have reported a wide range in the sticking coefficient.

  7. Satellites provide the big picture

    E-Print Network [OSTI]

    Famiglietti, JS; Cazenave, A; Eicker, A; Reager, JT; Rodell, M; Velicogna, I

    2015-01-01

    provide the necessary “big-picture” spatial coverage, asprovide the big picture gether, these measurements will

  8. BIG CPU, BIG DATABIG CPU, BIG DATA Solving the World's Toughest

    E-Print Network [OSTI]

    Kaminsky, Alan

    BIG CPU, BIG DATABIG CPU, BIG DATA Solving the World's Toughest Computational Problems with Parallel Computing Alan Kaminsky #12;#12;BIG CPU, BIG DATABIG CPU, BIG DATA Solving the World's Toughest College of Computing and Information Sciences Rochester Institute of Technology #12;ii BIG CPU, BIG DATA

  9. Introduction Big Radio Data

    E-Print Network [OSTI]

    Prodiæ, Aleksandar

    Introduction VLBI Pulsars Summary Big Radio Data Ue-Li Pen CITA, UofT, CIFAR July 3, 2014U. Pen Big Radio Data #12;Introduction VLBI Pulsars Summary Overview History VLBI Processing Future U. Pen Big signal processing U. Pen Big Radio Data #12;Introduction VLBI Pulsars Summary VLBI Current experiments

  10. What Determines the Sticking Probability of Water Molecules on Ice?

    SciTech Connect (OSTI)

    Batista, Enrique; Ayotte, Patrick; Bilic , Ante; Kay, Bruce D.; Jonsson, Hannes

    2005-11-22

    We present both experimental and theoretical studies of the sticking of water molecules on ice. The sticking probability is unity over a wide range in energy (0.5 eV–1.5 eV) when the molecules are incident along the surface normal, but drops as the angle increases at high incident energy. This is explained in terms of the strong orientational dependence of the interaction of the molecule with the surface and the time required for the reorientation of the molecule. The sticking probability is found to scale with the component of the incident velocity in the plane of the surface, unlike the commonly assumed normal or total energy scaling.

  11. Protecting the Market from ``Hockey Stick'' Pricing: How

    E-Print Network [OSTI]

    approach to curb the effects of ``hockey stick'' pricing in the spot electricity market run by the Electric for these services are exhausted. In markets where energy or capacity is pur- chased through a uniform price auction.tej.2004.03.001 The Electricity Journal #12;are paid the same market clearing price (MCP), the presence

  12. Big Sky Carbon Atlas

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

    (Acknowledgment to the Big Sky Carbon Sequestration Partnership (BSCSP); see home page at http://www.bigskyco2.org/)

  13. A contact model for sticking of adhesive mesoscopic particles

    E-Print Network [OSTI]

    A. Singh; V. Magnanimo; S. Luding

    2015-03-12

    The interaction between realistic visco-elasto-plastic and adhesive meso-particles is the subject of this study. The final goal is to define a simple, flexible and useful interaction model that allows to describe the multi-contact bulk behavior of assemblies of non-homogeneous/non-spherical particles, e.g. with internal structures of the scale of their contact deformation. We attempt to categorize previous approaches and propose a simplified mesoscale normal contact model that contains the essential ingredients to describe an ensemble of particles, while it is not aimed to include all details of every single contact, i.e. the mechanics of constituent elementary, primary particles is not explicitly taken into account. The model combines short-ranged, non-contact adhesive interactions with an elaborate, piece-wise linear visco-elasto-plastic adhesive contact law. Using energy conservation arguments, the special case of binary collisions is studied and an analytical expression for the coefficient of restitution in terms of impact velocity is derived. The assemblies (particles or meso-particles) stick to each other at very low impact velocity, while they rebound less dissipatively with increasing velocity, in agreement with experimental/theoretical/numerical findings for elasto-plastic spherical particles. For larger impact velocities we observe an interesting second sticking regime. While the first sticking is attributed to dominating non-contact adhesive forces, while the high velocity sticking is due to a balance between the non-linearly increasing history dependent adhesion and plastic dissipation. The model allows for a stiff, elastic core material, which produces a new rebound regime at even higher velocities.

  14. Big Data Begets Big Database Theory University of Washington

    E-Print Network [OSTI]

    Suciu, Dan

    Big Data Begets Big Database Theory Dan Suciu University of Washington 1 Motivation Industry analysts describe Big Data in terms of three V's: volume, velocity, variety. The data is too big to process the technical challenges in big data, but we find no inspiration in the three Vs. Volume is surely nothing new

  15. Big Eddy-Knight

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

    & Reliability Projects Expand Projects Skip navigation links Line Projects Big Eddy-Knight Central Ferry Lower Monumental Grand Coulee Transmission Line Replacement...

  16. Making big data, in theory

    E-Print Network [OSTI]

    Boellstorff, Tom

    2013-01-01

    3.0 Unported License. Making big data, in theory by Tommethods for analyzing big data originate in mid-twentieth2012. “Critical questions for Big Data: Provocations for a

  17. Big Data Privacy Scenarios

    E-Print Network [OSTI]

    Bruce, Elizabeth

    2015-10-01

    This paper is the first in a series on privacy in Big Data. As an outgrowth of a series of workshops on the topic, the Big Data Privacy Working Group undertook a study of a series of use scenarios to highlight the challenges ...

  18. CO2 sticking on Pt(111); the role of kinetic energy and internal degrees of freedom

    E-Print Network [OSTI]

    Persson, Mats

    CO2 sticking on Pt(111); the role of kinetic energy and internal, S-412 96, G"oteborg, Sweden Abstract CO2 adsorbed measurements of non-dissociative sticking coefficient, S0, of CO2 on the Pt(111) surfac* *e

  19. Note: Versatile sample stick for neutron scattering experiments in high electric fields

    SciTech Connect (OSTI)

    Bartkowiak, M., E-mail: marek.bartkowiak@psi.ch [Laboratory for Developments and Methods, Paul Scherrer Institut, CH-5232 Villigen (Switzerland); White, J. S. [Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen (Switzerland) [Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen (Switzerland); Laboratory for Quantum Magnetism, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland); Rønnow, H. M.; Prša, K. [Laboratory for Quantum Magnetism, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)] [Laboratory for Quantum Magnetism, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)

    2014-02-15

    We present a versatile high voltage sample stick that fits into all cryomagnets and standard cryostats at the Swiss Spallation Neutron Source, Paul Scherrer Institut, and which provides a low effort route to neutron scattering experiments that combine electric field with low temperature and magnetic field. The stick allows for voltages up to 5 kV and can be easily adapted for different scattering geometries. We discuss the design consideration and thermal behavior of the stick, and give one example to showcase the abilities of the device.

  20. Big Questions: Missing Antimatter

    ScienceCinema (OSTI)

    Lincoln, Don

    2014-08-07

    Einstein's equation E = mc2 is often said to mean that energy can be converted into matter. More accurately, energy can be converted to matter and antimatter. During the first moments of the Big Bang, the universe was smaller, hotter and energy was everywhere. As the universe expanded and cooled, the energy converted into matter and antimatter. According to our best understanding, these two substances should have been created in equal quantities. However when we look out into the cosmos we see only matter and no antimatter. The absence of antimatter is one of the Big Mysteries of modern physics. In this video, Fermilab's Dr. Don Lincoln explains the problem, although doesn't answer it. The answer, as in all Big Mysteries, is still unknown and one of the leading research topics of contemporary science.

  1. Rutgers Workshop on Big Data: Theoretical Foundation of Big Data

    E-Print Network [OSTI]

    Jornsten, Rebecka

    Rutgers Workshop on Big Data: Theoretical Foundation of Big Data Department of Statistics:05pm: Welcome and Introduction of Big Data Research at Rutgers Regina Liu, Chair, Department, Carnegie Mellon University "On Data Parallelism and Model Parallelism for Large Scale Machine Learning" 4

  2. Big data and the future of ecology

    E-Print Network [OSTI]

    2013-01-01

    N. 2010. Big science and big data in biology: from theCONCEPTS AND QUESTIONS Big data and the future of ecologyof the information age and “big data” across all sectors of

  3. Alpha-muon sticking and chaos in muon-catalysed "in flight" d-t fusion

    E-Print Network [OSTI]

    Sachie Kimura; Aldo Bonasera

    2006-07-31

    We discuss the alpha-muon sticking coefficient in the muon-catalysed ``in flight" d-t fusion in the framework of the Constrained Molecular Dynamics model. Especially the influence of muonic chaotic dynamics on the sticking coefficient is brought into focus. The chaotic motion of the muon affects not only the fusion cross section but also the $\\mu-\\alpha$ sticking coefficient. Chaotic systems lead to larger enhancements with respect to regular systems because of the reduction of the tunneling region. Moreover they give smaller sticking probabilities than those of regular events. By utilizing a characteristic of the chaotic dynamics one can avoid losing the muon in the $\\mu$CF cycle. We propose the application of the so-called ``microwave ionization of a Rydberg atom" to the present case which could lead to the enhancement of the reactivation process by using X-rays.

  4. Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Keith A. Olive

    1997-12-11

    The concordance of standard big bang nucleosynthesis theory and the related observations of the light element isotopes (including some new higher \\he4 abundances) will be reviewed. Implications of BBN on chemical evolution, dark matter and constraints on particle properties will be discussed.

  5. Semantic Interoperability for Big Data

    E-Print Network [OSTI]

    Baclawski, Kenneth B.

    Semantic Interoperability for Big Data Ken Baclawski College of Computer and Information Science Northeastern University #12;August 11, 2014 2 Emergence of Big Data The phenomenon was studied in the early based on the information scarcity model. #12;August 11, 2014 3 Characteristics of Big Data Large

  6. MICROSOFT PRESENTS FROM BIG DATA

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    1 MICROSOFT PRESENTS FROM BIG DATA TO SMART DATA: Using data to drive personalized brand January 22, 2014 ABSTRACT This white paper looks at Big Data from the marketing perspective, running DO WITH IT NEARLY EVERYONE IN MARKETING TODAY SHOULD BE FAMILIAR WITH THE CONCEPT OF BIG DATA

  7. Electrokinetic transport in microchannels with random roughness

    SciTech Connect (OSTI)

    Wang, Moran [Los Alamos National Laboratory; Kang, Qinjun [Los Alamos National Laboratory

    2008-01-01

    We present a numerical framework to model the electrokinetic transport in microchannels with random roughness. The three-dimensional microstructure of the rough channel is generated by a random generation-growth method with three statistical parameters to control the number density, the total volume fraction, and the anisotropy characteristics of roughness elements. The governing equations for the electrokinetic transport are solved by a high-efficiency lattice Poisson?Boltzmann method in complex geometries. The effects from the geometric characteristics of roughness on the electrokinetic transport in microchannels are therefore modeled and analyzed. For a given total roughness volume fraction, a higher number density leads to a lower fluctuation because of the random factors. The electroosmotic flow rate increases with the roughness number density nearly logarithmically for a given volume fraction of roughness but decreases with the volume fraction for a given roughness number density. When both the volume fraction and the number density of roughness are given, the electroosmotic flow rate is enhanced by the increase of the characteristic length along the external electric field direction but is reduced by that in the direction across the channel. For a given microstructure of the rough microchannel, the electroosmotic flow rate decreases with the Debye length. It is found that the shape resistance of roughness is responsible for the flow rate reduction in the rough channel compared to the smooth channel even for very thin double layers, and hence plays an important role in microchannel electroosmotic flows.

  8. Concentration of Eigenfunctions in Rough Media

    E-Print Network [OSTI]

    Smith, Hart F.

    Concentration of Eigenfunctions in Rough Media Hart F. Smith Department of Mathematics University of Washington, Seattle UC Irvine - June 18, 2012 Hart F. Smith Eigenfunctions in Rough Media #12;M = compact L2(M) (p) ( p 2 ) Hart F. Smith Eigenfunctions in Rough Media #12;M = compact manifold with volume

  9. Small Particles, Big Impact

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation ofAlbuquerque|Sensitive Species3performed StevenSmall Particles, Big Impact

  10. Stick-Slip Control in Nanoscale Boundary Lubrication by Surface Wettability

    E-Print Network [OSTI]

    Wei Chen; Adam S. Foster; Mikko J. Alava; Lasse Laurson

    2015-02-13

    We study the effect of atomic scale surface-lubricant interactions on nanoscale boundary-lubricated friction, by considering two example surfaces - hydrophilic mica and hydrophobic graphene - confining thin layers of water in molecular dynamics simulations. We observe stick-slip dynamics for thin water films confined by mica sheets, involving periodic breaking-reforming transitions of atomic scale capillary water bridges formed around the potassium ions of mica. However, only smooth sliding without stick-slip events is observed for water confined by graphene, as well as for thicker water layers confined by mica. Thus, our results illustrate how atomic scale details affect the wettability of the confining surfaces, and consequently control the presence or absence of stick-slip dynamics in nanoscale friction.

  11. Escaping the Big Rip?

    E-Print Network [OSTI]

    Mariam Bouhmadi-Lopez; Jose A. Jimenez Madrid

    2004-04-27

    We discuss dark energy models which might describe effectively the actual acceleration of the universe. More precisely, for a 4-dimensional Friedmann-Lema\\^{\\i}tre-Robertson-Walker (FLRW) universe we consider two situations: First of them, we model dark energy by phantom energy described by a perfect fluid satisfying the equation of state $P=(\\beta-1)\\rho$ (with $\\beta<0$ and constant). In this case the universe reaches a ``Big Rip'' independently of the spatial geometry of the FLRW universe. In the second situation, the dark energy is described by a phantom (generalized) Chaplygin gas which violates the dominant energy condition. Contrary to the previous case, for this material content a FLRW universe would never reach a ``big rip'' singularity (indeed, the geometry is asymptotically de Sitter). We also show how this dark energy model can be described in terms of scalar fields, corresponding to a minimally coupled scalar field, a Born-Infeld scalar field and a generalized Born-Infeld scalar field. Finally, we introduce a phenomenologically viable model where dark energy is described by a phantom generalized Chaplygin gas.

  12. The Exponentially Faster Stick-Slip Dynamics of the Peeling of an Adhesive Tape

    E-Print Network [OSTI]

    Nachiketa Mishra; Nigam Chandra Parida; Soumyendu Raha

    2014-05-07

    The stick-slip dynamics is considered from the nonlinear differential-algebraic equation (DAE) point of view and the peeling dynamics is shown to be a switching differential index DAE model. In the stick-slip regime with bifurcations, the differential index can be arbitrarily high. The time scale of the peeling velocity, the algebraic variable, in this regime is shown to be exponentially faster compared to the angular velocity of the spool and/or the stretch rate of the tape. A homogenization scheme for the peeling velocity which is characterized by the bifurcations is discussed and is illustrated with numerical examples.

  13. Water Dynamics at Rough Interfaces

    E-Print Network [OSTI]

    Markus Rosenstihl; Kerstin Kämpf; Felix Klameth; Matthias Sattig; Michael Vogel

    2014-07-21

    We use molecular dynamics computer simulations and nuclear magnetic resonance experiments to investigate the dynamics of water at interfaces of molecular roughness and low mobility. We find that, when approaching such interfaces, the structural relaxation of water, i.e., the $\\alpha$ process, slows down even when specific attractive interactions are absent. This prominent effect is accompanied by a smooth transition from Vogel to Arrhenius temperature dependence and by a growing importance of jump events. Consistently, at protein surfaces, deviations from Arrhenius behavior are weak when free water does not exist. Furthermore, in nanoporous silica, a dynamic crossover of liquid water occurs when a fraction of solid water forms near 225 K and, hence, the liquid dynamics changes from bulk-like to interface-dominated. At sufficiently low temperatures, water exhibits a quasi-universal $\\beta$ process, which is characterized by an activation energy of $E_a\\!=\\!0.5$ eV and involves anisotropic reorientation about large angles. As a consequence of its large amplitude, the faster $\\beta$ process destroys essentially all orientational correlation, rendering observation of a possible slower $\\alpha$ process difficult in standard experiments. Nevertheless, we find indications for the existence of structural relaxation down to a glass transition of interfacial water near 185 K. Hydrated proteins show a highly restricted backbone motion with an amplitude, which decreases upon cooling and vanishes at comparable temperatures, providing evidence for a high relevance of water rearrangements in the hydration shell for secondary protein relaxations.

  14. Home Health News New Sensors Stick To Organs To Monitor Health What is this? EMAIL PRINT RSS

    E-Print Network [OSTI]

    Rogers, John A.

    Home Health News New Sensors Stick To Organs To Monitor Health Share What is this? EMAIL PRINT RSS New Sensors Stick to Organs to Monitor Health Pliable electronic devices already tracking heart function in pigs, scientists say Buzz Digg Facebook More... WEDNESDAY, March 24 (HealthDay News) -- A new

  15. Debunking Six Big Myths about Nuclear Weapons

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

    Debunking Six Big Myths about Nuclear Weapons National Security Science Latest Issue:December 2014 All Issues submit Debunking six big myths about nuclear weapons Are nuclear...

  16. Big Iron for Big Data: An Unnatural Alliance?

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11DESERTWaterSharingBeyondBang or BigBigBig

  17. The ``fire stick farming'' hypothesis: Australian Aboriginal foraging strategies, biodiversity, and

    E-Print Network [OSTI]

    Jones, James Holland

    The ``fire stick farming'' hypothesis: Australian Aboriginal foraging strategies, biodiversity, and anthropogenic fire mosaics R. Bliege Bird* , D. W. Bird*, B. F. Codding*, C. H. Parker , and J. H. Jones landscapes under a lightning fire regime, and differ- ences are of scale, not of kind. Landscape scale

  18. Regression of Multicomponent Sticking Probabilities Using a Genetic Algorithm Ian J. Laurenzi*

    E-Print Network [OSTI]

    Regression of Multicomponent Sticking Probabilities Using a Genetic Algorithm Ian J. LaurenziVania, Philadelphia, PennsylVania 19104 A genetic algorithm (GA) was developed for the purpose of regressing processes were then simulated under physiological conditions via Monte Carlo. The GA successfully regressed

  19. Password Protected Smart Card and Memory Stick Authentication Against Off-Line Dictionary Attacks

    E-Print Network [OSTI]

    Wang, Yongge

    Password Protected Smart Card and Memory Stick Authentication Against Off-Line Dictionary Attacks requirements for remote authentication with password protected smart card. In recent years, several protocols on the password based authentication between a smart card owner and smart card via an untrusted card reader

  20. Engineered proteins stick like glue --even in water1 www.sciencedaily.com2

    E-Print Network [OSTI]

    South Bohemia, University of

    Engineered proteins stick like glue -- even in water1 www.sciencedaily.com2 3 Shellfish such as mussels and barnacles secrete very sticky proteins that help them cling to rocks or ship hulls, even naturally sticky mussel proteins as well as a bacterial protein found in biofilms --7 slimy layers formed

  1. Recidivism and Rehabilitation of Criminal Offenders: A Carrot and Stick Evolutionary Game

    E-Print Network [OSTI]

    Levine, Alex J.

    Recidivism and Rehabilitation of Criminal Offenders: A Carrot and Stick Evolutionary Game Bijan Motivated by recent efforts by the criminal justice system to treat and rehabilitate nonviolent offenders of virtuous, rehabilitated citizens or incorrigibles. Since total resources may be limited, we constrain

  2. Variational Inference for Stick-Breaking Beta Process Priors John Paisley1

    E-Print Network [OSTI]

    Carin, Lawrence

    Variational Inference for Stick-Breaking Beta Process Priors John Paisley1 jpaisley-parameter IBP, and does not extend to the beta process presented in (Hjort, 1990). Recently, Paisley et al., 2007); we discuss this difference in Sec- tion 4. Paisley et al. (2010) presented an inference

  3. Stick-Breaking Beta Processes and the Poisson Process John Paisley1

    E-Print Network [OSTI]

    Jordan, Michael I.

    Stick-Breaking Beta Processes and the Poisson Process John Paisley1 David M. Blei3 Michael I to Paisley et al. (2010) can be obtained from the characterization of the beta process as a Poisson process beta pro- cess was derived by Paisley et al. (2010). The derivation re- lied on a limiting process

  4. Coupling Between Precipitation and Contact-Line Dynamics: Multiring Stains and Stick-Slip Motion

    E-Print Network [OSTI]

    Chang, Hsueh-Chia

    Coupling Between Precipitation and Contact-Line Dynamics: Multiring Stains and Stick-Slip Motion after depinning and is repinned at an internal precipitate ring that determines the location of the next and precipitation dynamics hence control this unsteady drop motion. DOI: 10.1103/PhysRevLett.100.044503 PACS numbers

  5. BIG DATA IMPLEMENTATION COMMITTEE Submitted to Provost Hexter

    E-Print Network [OSTI]

    Ullrich, Paul

    BIG DATA IMPLEMENTATION COMMITTEE REPORT Submitted to Provost Hexter February 22, 2013 #12..................................................................................................................................... 5 1. Big Data, Big Challenges, Big Opportunities ......................................................................................... 5 2. UC Davis and Big Data: State of the Art and Current Needs

  6. Physics: the big black box Mirror conjecture

    E-Print Network [OSTI]

    Cavalieri, Renzo

    Physics: the big black box Math Mirror conjecture A look into the mirror (I) an overview of Mirror Symmetry #12;Physics: the big black box Math Mirror conjecture Outline 1 Physics: the big black box 2 Math Symmetry #12;Physics: the big black box Math Mirror conjecture A slogan Mirror Symmetry is a correspondence

  7. Big Data Analytics in Financial Statement

    E-Print Network [OSTI]

    ;Demographic and Weather Big Data · OfficeMax personalizes online landing pages based on customerBig Data Analytics in Financial Statement Audits Min Cao Roman Chychyla Trevor Stewart February 26th, 2015 #12;Big Data Analytics · Big Data analytics is the process of inspecting, cleaning

  8. The big picture Victoria University of Wellington

    E-Print Network [OSTI]

    Visser, Matt

    Outline Abstract Basics The big picture Victoria University of Wellington Te Whare W¯ananga o te Overview of modern cosmology #12;Outline Abstract Basics The big picture Outline: Abstract Basics The big picture Matt Visser Overview of modern cosmology #12;Outline Abstract Basics The big picture Abstract: VUW

  9. Big Sky Trust Fund (Montana)

    Broader source: Energy.gov [DOE]

    The Big Sky Trust Fund reimburses expenses incurred in the purchase, leasing, or relocation of real assets for direct use of the assisted business or employee training costs. A local or tribal...

  10. Making big data, in theory

    E-Print Network [OSTI]

    Boellstorff, Tom

    2013-01-01

    for this work. Notes 1. Curran, 2012, pp. 34, 60. 2. Peng etin-big-data/, accessed 5 July 2013. James Curran, 2012. “Internet history,” In: James Curran, Natalie Fenton, and Des

  11. Big Bang Nucleosynthesis: 2015

    E-Print Network [OSTI]

    Cyburt, Richard H; Olive, Keith A; Yeh, Tsung-Han

    2015-01-01

    Big-bang nucleosynthesis (BBN) describes the production of the lightest nuclides via a dynamic interplay among the four fundamental forces during the first seconds of cosmic time. We briefly overview the essentials of this physics, and present new calculations of light element abundances through li6 and li7, with updated nuclear reactions and uncertainties including those in the neutron lifetime. We provide fits to these results as a function of baryon density and of the number of neutrino flavors, N_nu. We review recent developments in BBN, particularly new, precision Planck cosmic microwave background (CMB) measurements that now probe the baryon density, helium content, and the effective number of degrees of freedom, n_eff. These measurements allow for a tight test of BBN and of cosmology using CMB data alone. Our likelihood analysis convolves the 2015 Planck data chains with our BBN output and observational data. Adding astronomical measurements of light elements strengthens the power of BBN. We include a ...

  12. Rough surface reconstruction for ultrasonic NDE simulation

    SciTech Connect (OSTI)

    Choi, Wonjae; Shi, Fan; Lowe, Michael J. S.; Skelton, Elizabeth A.; Craster, Richard V.

    2014-02-18

    The reflection of ultrasound from rough surfaces is an important topic for the NDE of safety-critical components, such as pressure-containing components in power stations. The specular reflection from a rough surface of a defect is normally lower than it would be from a flat surface, so it is typical to apply a safety factor in order that justification cases for inspection planning are conservative. The study of the statistics of the rough surfaces that might be expected in candidate defects according to materials and loading, and the reflections from them, can be useful to develop arguments for realistic safety factors. This paper presents a study of real rough crack surfaces that are representative of the potential defects in pressure-containing power plant. Two-dimensional (area) values of the height of the roughness have been measured and their statistics analysed. Then a means to reconstruct model cases with similar statistics, so as to enable the creation of multiple realistic realizations of the surfaces, has been investigated, using random field theory. Rough surfaces are reconstructed, based on a real surface, and results for these two-dimensional descriptions of the original surface have been compared with those from the conventional model based on a one-dimensional correlation coefficient function. In addition, ultrasonic reflections from them are simulated using a finite element method.

  13. A CONSTRUCTION OF THE ROUGH PATH ABOVE FRACTIONAL ...

    E-Print Network [OSTI]

    2013-03-05

    Appl. 120 (2010) 1444–1472], where the construction of a rough path over B was first introduced. 1. Introduction. Rough paths analysis is a theory introduced by ...

  14. Prediction of Seismic Slope Displacements by Dynamic Stick-Slip Analyses

    SciTech Connect (OSTI)

    Ausilio, Ernesto [University of Calabria (Italy); Costanzo, Antonio [University of Calabria (Italy); Silvestri, Francesco [University of Naples 'Federico II' (Italy); Tropeano, Giuseppe [University of Calabria (Italy)

    2008-07-08

    A good-working balance between simplicity and reliability in assessing seismic slope stability is represented by displacement-based methods, in which the effects of deformability and ductility can be either decoupled or coupled in the dynamic analyses. In this paper, a 1D lumped mass 'stick-slip' model is developed, accounting for soil heterogeneity and non-linear behaviour, with a base sliding mechanism at a potential rupture surface. The results of the preliminary calibration show a good agreement with frequency-domain site response analysis in no-slip conditions. The comparison with rigid sliding block analyses and with the decoupled approach proves that the stick-slip procedure can result increasingly unconservative for soft soils and deep sliding depths.

  15. An assessment of the potential of the United States stick-built house for self-help construction

    E-Print Network [OSTI]

    Takase, Yutaka

    1981-01-01

    This thesis initially focuses on the development of the U.S. stick-built house. The material and construction methods of the structure remain simple and unchanged, whereas the non-structural elements offer an enormous ...

  16. A Big Data Approach to Analyzing Market Volatility

    E-Print Network [OSTI]

    Wu, Kesheng

    2014-01-01

    A Big Data Approach to Analyzing Market Volatility KeshengUniversity of California. A Big Data Approach to Analyzingefforts to handle the big data problem. However, the

  17. Big data : evolution, components, challenges and opportunities

    E-Print Network [OSTI]

    Zarate Santovena, Alejandro

    2013-01-01

    This work reviews the evolution and current state of the "Big Data" industry, and to understand the key components, challenges and opportunities of Big Data and analytics face in today business environment, this is analyzed ...

  18. THE BIG PICTURE: A "FISHERY SYSTEM APPROACH"

    E-Print Network [OSTI]

    Charles, Anthony

    THE BIG PICTURE: A "FISHERY SYSTEM APPROACH" LINKS FISHERY MANAGEMENT AND BIODIVERSITY Anthony economy and coastal communities. Accordingly, there is a need to move toward a "big picture" perspective

  19. How to Lie with Big Data (and/or big computations)

    E-Print Network [OSTI]

    Stark, Philip B.

    How to Lie with Big Data (and/or big computations) Philip B. Stark Department of Statistics experimental design doesn't matter #12;What's new in Big Data? · design still matters; experiments versus flu trends http://bits.blogs.nytimes.com/2014/03/28/ google-flu-trends-the-limits-of-big-data/ #12

  20. Big Things from Small Beginnings

    Broader source: Energy.gov [DOE]

    Slide Presentation given by D. Bullen on behalf of Peter S. Winokur, Ph.D., Chairman Defense Nuclear Facilities Safety Board; prepared by D. Bullen, D. Owen, J. MacSleyne, and D. Minnema. Big Things from Small Beginnings. How seemingly unimportant situations can lead to significant, undesirable events.

  1. Big Explosives Experimental Facility - BEEF

    ScienceCinema (OSTI)

    None

    2015-01-07

    The Big Explosives Experimental Facility or BEEF is a ten acre fenced high explosive testing facility that provides data to support stockpile stewardship and other national security programs. At BEEF conventional high explosives experiments are safely conducted providing sophisticated diagnostics such as high speed optics and x-ray radiography.

  2. Neutrinos and Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    A. D. Dolgov

    2002-03-18

    The role of neutrinos in big bang nucleosynthesis is discussed. The bounds on the number of neutrino families, neutrino degeneracy, parameters of neutrino oscillations are presented. A model of chemically inhomogeneous, while energetically smooth, universe created by inhomogeneous cosmological neutrino asymmetry is described. Nucleosynthesis limits on production of right-handed neutrinos are considered.

  3. Big Explosives Experimental Facility - BEEF

    SciTech Connect (OSTI)

    None

    2014-10-31

    The Big Explosives Experimental Facility or BEEF is a ten acre fenced high explosive testing facility that provides data to support stockpile stewardship and other national security programs. At BEEF conventional high explosives experiments are safely conducted providing sophisticated diagnostics such as high speed optics and x-ray radiography.

  4. Big Data in Technology Services Mathew Benwell

    E-Print Network [OSTI]

    Balasuriya, Sanjeeva

    Big Data in Technology Services #12;Presenter Mathew Benwell Security Specialist Click here to watch online video University of Adelaide 2 #12;What is Big Data ­ 3 V's University of Adelaide 3 #12;Our Big Data Platform ­ Splunk> · The most asked question! Where did the name Splunk come from

  5. Rolling the Dice on Big Data Department of Mathematics

    E-Print Network [OSTI]

    Ipsen, Ilse

    Rolling the Dice on Big Data Ilse Ipsen Department of Mathematics #12;The Economist, 27 February on Big Data What is "Big"? #12;Measuring Units 1 byte 1 character 10 bytes 1 word 100 bytes 1 sentence #12;Rolling the Dice on Big Data Data #12;Rolling the Dice on Big Data #12;Rolling the Dice on Big

  6. Combinatorial Block Copolymer Ordering on Tunable Rough

    SciTech Connect (OSTI)

    Kulkarni M. M.; Yager K.; Sharma, A.; Karim, A.

    2012-05-01

    Morphology control of block copolymer (BCP) thin films through substrate interaction via controlled roughness parameters is of significant interest for numerous high-tech applications ranging from solar cells to high-density storage media. While effects of substrate surface energy (SE) and roughness (R) on BCP morphology have been individually investigated, their synergistic effects have not been explored in any systematic manner. Interestingly, orientation response of BCP to changes in SE can be similar to what can be accomplished with variations in R. Here we present a novel approach for orienting lamellar BCP films of poly(styrene)-block-poly(methyl methacrylate) (PS-PMMA) on spin-coated xerogel (a dried gel of silica nanoparticle network) substrate with simultaneously tunable surface energy, {gamma}{sub s} {approx} 29-53 mJ/m{sup 2}, by UVO exposure and roughness, R{sub rms} {approx} 0.5-30 nm, by sol-gel processing steps of regulating the catalyst concentration and sol aging time. As in previous BCP orientation studies on 20 nm diameter monodisperse silica nanoparticle coated surface, we find a similar but broadened oscillatory BCP orientation behavior with film thickness due to the random rather than periodic rough surfaces. We also find that higher random roughness amplitude is not the necessary criteria for obtaining a vertical orientation of BCP lamellae. Rather, a high surface fractal dimension (D{sub f} > 2.4) of the rough substrate in conjunction with an optimal substrate surface energy {gamma}{sub s} 29 mJ/m{sup 2} results in 100% vertically oriented lamellar microdomains. The AFM measured film surface microstructure correlates well with the internal 3D BCP film structure probed by grazing incidence small-angle X-ray scattering (GISAXS) and rotational small-angle neutron scattering (SANS). In contrast to tunable self-assembled monolayer (SAM)-coated substrates, the xerogel films are very durable and retain their chemical properties over period of several months. These results also highlight importantly that BCP orientation control for nanotechnology is possible not only on specially prepared patterned substrates but also on industrially viable sol-gel substrates.

  7. Quasars and the Big Blue Bump

    E-Print Network [OSTI]

    Zhaohui Shang; Michael S. Brotherton; Richard F. Green; Gerard A. Kriss; Jennifer Scott; Jessica Kim Quijano; Omer Blaes; Ivan Hubeny; John Hutchings; Mary Elizabeth Kaiser; Anuradha Koratkar; William Oegerle; Wei Zheng

    2004-09-29

    We investigate the ultraviolet-to-optical spectral energy distributions (SEDs) of 17 active galactic nuclei (AGNs) using quasi-simultaneous spectrophotometry spanning 900-9000 Angstrom (rest frame). We employ data from the Far Ultraviolet Spectroscopic Explorer (FUSE), the Hubble Space Telescope (HST), and the 2.1-meter telescope at Kitt Peak National Observatory (KPNO). Taking advantage of the short-wavelength coverage, we are able to study the so-called "big blue bump," the region where the energy output peaks, in detail. Most objects exhibit a spectral break around 1100 Angstrom. Although this result is formally associated with large uncertainty for some objects, there is strong evidence in the data that the far-ultraviolet spectral region is below the extrapolation of the near-ultraviolet-optical slope, indicating a spectral break around 1100 Angstrom. We compare the behavior of our sample to those of non-LTE thin-disk models covering a range in black-hole mass, Eddington ratio, disk inclination, and other parameters. The distribution of ultraviolet-optical spectral indices redward of the break, and far-ultraviolet indices shortward of the break, are in rough agreement with the models. However, we do not see a correlation between the far-ultraviolet spectral index and the black hole mass, as seen in some accretion disk models. We argue that the observed spectral break is intrinsic to AGNs, although intrinsic reddening as well as Comptonization can strongly affect the far-ultraviolet spectral index. We make our data available online in digital format.

  8. Big Bang Day : The Great Big Particle Adventure - 3. Origins

    ScienceCinema (OSTI)

    None

    2011-04-25

    In this series, comedian and physicist Ben Miller asks the CERN scientists what they hope to find. If the LHC is successful, it will explain the nature of the Universe around us in terms of a few simple ingredients and a few simple rules. But the Universe now was forged in a Big Bang where conditions were very different, and the rules were very different, and those early moments were crucial to determining how things turned out later. At the LHC they can recreate conditions as they were billionths of a second after the Big Bang, before atoms and nuclei existed. They can find out why matter and antimatter didn't mutually annihilate each other to leave behind a Universe of pure, brilliant light. And they can look into the very structure of space and time - the fabric of the Universe

  9. The Stick-Breaking Construction of the Beta Process as a Poisson Process

    E-Print Network [OSTI]

    Paisley, John; Jordan, Michael I

    2011-01-01

    We show that the stick-breaking construction of the beta process due to Paisley et al. (2010) can be obtained from the characterization of the beta process as a Poisson process. This is achieved by showing that the mean measure of the underlying Poisson process is equal to that of the beta process. We then present a number of consequences of this derivation; in particular, we show how it can be used to derive error bounds on truncated beta processes that are significantly tighter than those in the literature.

  10. Correlating toughness and roughness in ductile fracture

    E-Print Network [OSTI]

    Ponson, Laurent; Osovski, Shmulik; Bouchaud, Elisabeth; Tvergaard, Viggo; Needleman, Alan

    2013-01-01

    Three dimensional calculations of ductile crack growth under mode I plane strain, small scale yielding conditions are carried out using an elastic-viscoplastic constitutive relation for a progres- sively cavitating plastic solid with two populations of void nucleating second phase particles. Full field solutions are obtained for three dimensional material microstructures characterized by ran- dom distributions of void nucleating particles. Crack growth resistance curves and fracture surface roughness statistics are calculated using standard procedures. The range of void nucleating particle volume fractions considered give rise to values of toughness, JIC, that vary by a factor of four. For all volume fractions considered, the computed fracture surfaces are self-affine over a size range of about two orders of magnitude with a roughness exponent of 0.54 $\\pm$ 0.03. For small void nucleating particle volume fractions, the mean large particle spacing serves as a single dominant length scale. In this regime, the c...

  11. Correlating toughness and roughness in ductile fracture

    E-Print Network [OSTI]

    Laurent Ponson; Ankit Srivastava; Shmulik Osovski; Elisabeth Bouchaud; Viggo Tvergaard; Alan Needleman

    2013-07-16

    Three dimensional calculations of ductile crack growth under mode I plane strain, small scale yielding conditions are carried out using an elastic-viscoplastic constitutive relation for a progres- sively cavitating plastic solid with two populations of void nucleating second phase particles. Full field solutions are obtained for three dimensional material microstructures characterized by ran- dom distributions of void nucleating particles. Crack growth resistance curves and fracture surface roughness statistics are calculated using standard procedures. The range of void nucleating particle volume fractions considered give rise to values of toughness, JIC, that vary by a factor of four. For all volume fractions considered, the computed fracture surfaces are self-affine over a size range of about two orders of magnitude with a roughness exponent of 0.54 $\\pm$ 0.03. For small void nucleating particle volume fractions, the mean large particle spacing serves as a single dominant length scale. In this regime, the correlation length of the fracture surface corresponding to the cut-off of the self-affine behavior is found to be linearly related to JIC thus quantitatively correlating toughness and fracture surface roughness.

  12. Distributed Roughness Receptivity in a Flat Plate Boundary Layer 

    E-Print Network [OSTI]

    Kuester, Matthew Scott

    2014-04-18

    the incoming boundary layer. This dissertation describes an experiment specifically designed to study the shielding effect. Three roughness configurations, a deterministic distributed roughness patch, a slanted rectangle, and the combination of the two, were...

  13. A fast direct numerical simulation method for characterising hydraulic roughness

    E-Print Network [OSTI]

    Chung, Daniel; MacDonald, Michael; Hutchins, Nicholas; Ooi, Andrew

    2015-01-01

    We describe a fast direct numerical simulation (DNS) method that promises to directly characterise the hydraulic roughness of any given rough surface, from the hydraulically smooth to the fully rough regime. The method circumvents the unfavourable computational cost associated with simulating high-Reynolds-number flows by employing minimal-span channels (Jimenez & Moin 1991). Proof-of-concept simulations demonstrate that flows in minimal-span channels are sufficient for capturing the downward velocity shift, that is, the Hama roughness function, predicted by flows in full-span channels. We consider two sets of simulations, first with modelled roughness imposed by body forces, and second with explicit roughness described by roughness-conforming grids. Owing to the minimal cost, we are able to conduct DNSs with increasing roughness Reynolds numbers while maintaining a fixed blockage ratio, as is typical in full-scale applications. The present method promises a practical, fast and accurate tool for character...

  14. Adhesive rough contacts near complete contact

    E-Print Network [OSTI]

    M. Ciavarella

    2015-05-01

    Recently, there has been some debate over the effect of adhesion on the contact of rough surfaces. Classical asperity theories predict, in agreement with experimental observations, that adhesion is always destroyed by roughness except if the amplitude of the same is extremely small, and the materials are particularly soft. This happens for all fractal dimensions. However, these theories are limited due to the geometrical simplification, which may be particularly strong in conditions near full contact. We introduce therefore a simple model for adhesion, which aims at being rigorous near full contact, where we postulate there are only small isolated gaps between the two bodies. The gaps can be considered as "pressurized cracks" by using Ken Johnson's idea of searching a corrective solution to the full contact solution. The solution is an extension of the adhesive-less solution proposed recently by Xu, Jackson, and Marghitu (XJM model) (2014). This process seems to confirm recent theories using the JKR theory, namely that the effect of adhesion depends critically on the fractal dimension. For D2.5, seems for large enough magnifications that a full fractal roughness completely destroys adhesion. These results are partly paradoxical since strong adhesion is not observed in nature except in special cases. A possible way out of the paradox may be that the conclusion is relevant for the near full contact regime, where the strong role of flaws at the interfaces, and of gaps full of contaminant, trapped air or liquid in pressure, needs to be further explored. If conditions near full contact are not achieved on loading, probably the conclusions of classical asperity theories may be confirmed.

  15. Traffic information computing platform for big data

    SciTech Connect (OSTI)

    Duan, Zongtao Li, Ying Zheng, Xibin Liu, Yan Dai, Jiting Kang, Jun

    2014-10-06

    Big data environment create data conditions for improving the quality of traffic information service. The target of this article is to construct a traffic information computing platform for big data environment. Through in-depth analysis the connotation and technology characteristics of big data and traffic information service, a distributed traffic atomic information computing platform architecture is proposed. Under the big data environment, this type of traffic atomic information computing architecture helps to guarantee the traffic safety and efficient operation, more intelligent and personalized traffic information service can be used for the traffic information users.

  16. A different Big Bang theory: Los Alamos

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

    different Big Bang theory: Los Alamos unveils explosives detection expertise February 19, 2015 Collaboration project defeats explosives threats through enhanced detection...

  17. 3/12/2015 1 Big Data in Accounting

    E-Print Network [OSTI]

    3/12/2015 1 Big Data in Accounting: An Overview #12;2 The Meaning of Big Data · Differs across of Storage · Processing #12;3 Accounting and Big Data · Big Data has the potential to cause a paradigm shift the current structured data stores of ERPs. #12;Non-traditional Big Data · Addition of new types of data

  18. Big Efficieny for Small Manufacturing 

    E-Print Network [OSTI]

    Trombley, D.

    2014-01-01

    stream_source_info ESL-IE-14-05-10.pdf.txt stream_content_type text/plain stream_size 6203 Content-Encoding UTF-8 stream_name ESL-IE-14-05-10.pdf.txt Content-Type text/plain; charset=UTF-8 Big Efficiency for Small... and corporate memberships • Research and technical assistance • Data on real world experiences, best practices • Policies advancing market transformation/market development • Education and Advocacy • Conferences, publications • National, state and local ESL...

  19. Big bang nucleosynthesis: An update

    SciTech Connect (OSTI)

    Olive, Keith A. [William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)] [William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)

    2013-07-23

    An update on the standard model of big bang nucleosynthesis (BBN) is presented. With the value of the baryon-tophoton ratio determined to high precision by WMAP, standard BBN is a parameter-free theory. In this context, the theoretical prediction for the abundances of D, {sup 4}He, and {sup 7}Li is discussed and compared to their observational determination. While concordance for D and {sup 4}He is satisfactory, the prediction for {sup 7}Li exceeds the observational determination by a factor of about four. Possible solutions to this problem are discussed.

  20. Big Data Hits the Beamline

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & InspectionsBeryllium and ChronicBestBeyond theBid-ListBig Data

  1. Big Sol - Facilities - Cyclotron Institute

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & InspectionsBeryllium and ChronicBestBeyond theBid-ListBig

  2. Yushu Yao Big Data @ NERSC

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos Alamos verifies largest single|YejunOpportunityYue Lu Yue LuYao Big

  3. Big Data Big Talent The Master's in Business Analytics program starting Spring 2015 is designed to

    E-Print Network [OSTI]

    Huang, Haiying

    Business Analytics Big Data Big Talent The Master's in Business Analytics program starting Spring Intelligence Web and Social Analytics Big Data Analytics Python for Data Analytics Forecasting Applied 2015 is designed to create an empowered workforce that understands how data - regardless of size

  4. Report on the Night of the Big Wind The Big Wind of 1839 was

    E-Print Network [OSTI]

    Report on the Night of the Big Wind The Big Wind of 1839 was Ireland's worst natural disaster. It brought hurricane force winds very rare in such a temperate climate during the night of 6th - 7th January a coincidence. The day before the `Night of the Big Wind' was Little Christmas, the day when the date Christmas

  5. Bifurcations from steady sliding to stick slip in boundary lubrication A. A. Batista and J. M. Carlson

    E-Print Network [OSTI]

    Carlson, Jean

    Bifurcations from steady sliding to stick slip in boundary lubrication A. A. Batista and J. M in models for boundary lubrication introduced in J. M. Carlson and A. A. Batista, Phys. Rev. E 53, 4153 1996 distinguishing features associated with surfaces separated by a few molecular layers of lubricant. Here we find

  6. Earthquake behaviour and large-event predictability in a sheared granular stick-slip system

    E-Print Network [OSTI]

    Dalton, F; Dalton, Fergal; Corcoran, David

    2002-01-01

    We present results from a physical experiment which demonstrates that a sheared granular medium behaves in a manner analogous to earthquake activity. The device consists of an annular plate rotating over a granular medium in a stick-slip fashion. Previous observations by us include a bounded critical state with a power law distribution of event energy consistent with the Gutenberg-Richter law, here we also reveal stair-case seismicity, clustering, foreshocks, aftershocks and seismic quiescence. Subcritical and supercritical regimes have also been observed by us depending on the system configuration. We investigate the predictability of large events. Using the quiescence between `shock' events as an alarm condition, it is found that large events are respectively unpredictable, marginally predictable and highly predictable in the subcritical, critical and supercritical states.

  7. Earthquake behaviour and large-event predictability in a sheared granular stick-slip system

    E-Print Network [OSTI]

    Fergal Dalton; David Corcoran

    2002-11-13

    We present results from a physical experiment which demonstrates that a sheared granular medium behaves in a manner analogous to earthquake activity. The device consists of an annular plate rotating over a granular medium in a stick-slip fashion. Previous observations by us include a bounded critical state with a power law distribution of event energy consistent with the Gutenberg-Richter law, here we also reveal stair-case seismicity, clustering, foreshocks, aftershocks and seismic quiescence. Subcritical and supercritical regimes have also been observed by us depending on the system configuration. We investigate the predictability of large events. Using the quiescence between `shock' events as an alarm condition, it is found that large events are respectively unpredictable, marginally predictable and highly predictable in the subcritical, critical and supercritical states.

  8. How Big Is Your Footprint?

    K-12 Energy Lesson Plans and Activities Web site (EERE)

    An ecological footprint is a way to roughly measure the impact of a person’s choices on the environment. When students go online to calculate how many Earths it would take if everyone on the planet lived the way that they do, they will be astonished. Students increase their awareness of the impact of their choices on the Earth by studying the ecological footprint concept. They also learn how to calculate the mean, median, mode, and standard deviation of a set of data.

  9. Tools for Extracting Actionable Medical Knowledge from Genomic Big Data

    E-Print Network [OSTI]

    Goldstein, Theodore Charles

    2013-01-01

    KNOWLEDGE FROM GENOMIC BIG DATA A dissertation submitted inKNOWLEDGE FROM GENOMIC BIG DATA By Theodore C. Goldsteinby the quantities of big data from these assays and cannot

  10. Hydrothermal coupling in a rough fracture

    E-Print Network [OSTI]

    Neuville, A; Schmittbuhl, J; Neuville, Am\\'{e}lie; Toussaint, Renaud; Schmittbuhl, Jean

    2006-01-01

    Heat exchange during laminar flow is studied at the fracture scale on the basis of the Stokes equation. We used a synthetic aperture model (a self-affine model) that has been shown to be a realistic geometrical description of the fracture morphology. We developed a numerical modelling using a finite difference scheme of the hydrodynamic flow and its coupling with an advection/conduction description of the fluid heat. As a first step, temperature within the surrounding rock is supposed to be constant. Influence of the fracture roughness on the heat flux through the wall, is estimated and a thermalization length is shown to emerge. Implications for the Soultz-sous-For\\^{e}ts geothermal project are discussed.

  11. Reliability Meets Big Data: Opportunities and Challenges

    E-Print Network [OSTI]

    McCalley, James D.

    Reliability Meets Big Data: Opportunities and Challenges William Q. Meeker Department of Statistics maintenance operations. 1.2 Examples of systems providing big data Some examples of particular systems 1, 2013 Abstract Reliability field data such as that obtained from warranty claims and maintenance

  12. GREEN IT STRATEGY WHITE PAPER BIG DATA.

    E-Print Network [OSTI]

    Chou, James

    GREEN IT STRATEGY WHITE PAPER BIG DATA. BIG ENERGY. #12;GREEN:ons in MassachuseUs. In one day, Odyssey's cloud compu:ng power can process the same amount of 250 more kilowaUs annually. HARVARD'S GREEN IT COMMITMENT Achieve University

  13. The big picture Victoria University of Wellington

    E-Print Network [OSTI]

    Visser, Matt

    Abstract Basics The big picture Victoria University of Wellington Te Whare W¯ananga o te ¯Upoko o picture Abstract: VUW Modern cosmology is an interesting mixture -- some aspects of cosmology are now... #12;Abstract Basics The big picture Basics: Some parts of cosmology are rock solid: Yes, the universe

  14. Quark mass variation constraints from Big Bang nucleosynthesis...

    Office of Scientific and Technical Information (OSTI)

    Quark mass variation constraints from Big Bang nucleosynthesis Citation Details In-Document Search Title: Quark mass variation constraints from Big Bang nucleosynthesis We study...

  15. Wetting, Spreading, and Adsorption on Randomly Rough Surfaces

    E-Print Network [OSTI]

    S. Herminghaus

    2011-11-17

    The wetting properties of solid substrates with customary (i.e., macroscopic) random roughness are considered as a function of the microscopic contact angle of the wetting liquid and its partial pressure in the surrounding gas phase. Analytic expressions are derived which allow for any given lateral correlation function and height distribution of the roughness to calculate the wetting phase diagram, the adsorption isotherms, and to locate the percolation transition in the adsorbed liquid film. Most features turn out to depend only on a few key parameters of the roughness, which can be clearly identified. It is shown that a first order transition in the adsorbed film thickness, which we term 'Wenzel prewetting', occurs generically on typical roughness topographies, but is absent on purely Gaussian roughness. It is thereby shown that even subtle deviations from Gaussian roughness characteristics may be essential for correctly predicting even qualitative aspects of wetting.

  16. Big Mysteries: The Higgs Mass

    SciTech Connect (OSTI)

    Lincoln, Don

    2014-04-28

    With the discovery of what looks to be the Higgs boson, LHC researchers are turning their attention to the next big question, which is the predicted mass of the newly discovered particles. When the effects of quantum mechanics is taken into account, the mass of the Higgs boson should be incredibly high...perhaps upwards of a quadrillion times higher than what was observed. In this video, Fermilab's Dr. Don Lincoln explains how it is that the theory predicts that the mass is so large and gives at least one possible theoretical idea that might solve the problem. Whether the proposed idea is the answer or not, this question must be answered by experiments at the LHC or today's entire theoretical paradigm could be in jeopardy.

  17. Big Mysteries: The Higgs Mass

    ScienceCinema (OSTI)

    Lincoln, Don

    2014-06-03

    With the discovery of what looks to be the Higgs boson, LHC researchers are turning their attention to the next big question, which is the predicted mass of the newly discovered particles. When the effects of quantum mechanics is taken into account, the mass of the Higgs boson should be incredibly high...perhaps upwards of a quadrillion times higher than what was observed. In this video, Fermilab's Dr. Don Lincoln explains how it is that the theory predicts that the mass is so large and gives at least one possible theoretical idea that might solve the problem. Whether the proposed idea is the answer or not, this question must be answered by experiments at the LHC or today's entire theoretical paradigm could be in jeopardy.

  18. Enhanced Tissue Adhesion by Increased Porosity and Surface Roughness...

    Office of Scientific and Technical Information (OSTI)

    Enhanced Tissue Adhesion by Increased Porosity and Surface Roughness of Carbon Based Biomaterials Citation Details In-Document Search Title: Enhanced Tissue Adhesion by Increased...

  19. BIG SKY CARBON SEQUESTRATION PARTNERSHIP

    SciTech Connect (OSTI)

    Susan M. Capalbo

    2004-01-04

    The Big Sky Partnership, led by Montana State University, is comprised of research institutions, public entities and private sectors organizations, and the Confederated Salish and Kootenai Tribes and the Nez Perce Tribe. Efforts during the first performance period fall into four areas: evaluation of sources and carbon sequestration sinks; development of GIS-based reporting framework; designing an integrated suite of monitoring, measuring, and verification technologies; and initiating a comprehensive education and outreach program. At the first Partnership meeting the groundwork was put in place to provide an assessment of capture and storage capabilities for CO{sub 2} utilizing the resources found in the Partnership region (both geological and terrestrial sinks), that would complement the ongoing DOE research. The region has a diverse array of geological formations that could provide storage options for carbon in one or more of its three states. Likewise, initial estimates of terrestrial sinks indicate a vast potential for increasing and maintaining soil C on forested, agricultural, and reclaimed lands. Both options include the potential for offsetting economic benefits to industry and society. Complementary to the efforts on evaluation of sources and sinks is the development of the Big Sky Partnership Carbon Cyberinfrastructure (BSP-CC) and a GIS Road Map for the Partnership. These efforts will put in place a map-based integrated information management system for our Partnership, with transferability to the national carbon sequestration effort. The Partnership recognizes the critical importance of measurement, monitoring, and verification technologies to support not only carbon trading but other policies and programs that DOE and other agencies may want to pursue in support of GHG mitigation. The efforts begun in developing and implementing MMV technologies for geological sequestration reflect this concern. Research is also underway to identify and validate best management practices for soil C in the partnership region, and to design a risk/cost effectiveness framework to make comparative assessments of each viable sink, taking into account economic costs, offsetting benefits, scale of sequestration opportunities, spatial and time dimensions, environmental risks, and long term viability. A series of meetings held in November and December, 2003, have laid the foundations for assessing the issues surrounding the implementation of a market-based setting for soil C credits. These include the impact of existing local, state, and federal permitting issues for terrestrial based carbon sequestration projects, consistency of final protocols and planning standards with national requirements, and alignments of carbon sequestration projects with existing federal and state cost-share programs. Finally, the education and outreach efforts during this performance period have resulted in a comprehensive plan which serves as a guide for implementing the outreach activities under Phase I. The primary goal of this plan is to increase awareness, understanding, and public acceptance of sequestration efforts and build support for a constituent based network which includes the initial Big Sky Partnership and other local and regional businesses and entities.

  20. BIG SKY CARBON SEQUESTRATION PARTNERSHIP

    SciTech Connect (OSTI)

    Susan M. Capalbo

    2004-06-01

    The Big Sky Partnership, led by Montana State University, is comprised of research institutions, public entities and private sectors organizations, and the Confederated Salish and Kootenai Tribes and the Nez Perce Tribe. Efforts during the second performance period fall into four areas: evaluation of sources and carbon sequestration sinks; development of GIS-based reporting framework; designing an integrated suite of monitoring, measuring, and verification technologies; and initiating a comprehensive education and outreach program. At the first two Partnership meetings the groundwork was put in place to provide an assessment of capture and storage capabilities for CO{sub 2} utilizing the resources found in the Partnership region (both geological and terrestrial sinks), that would complement the ongoing DOE research. The region has a diverse array of geological formations that could provide storage options for carbon in one or more of its three states. Likewise, initial estimates of terrestrial sinks indicate a vast potential for increasing and maintaining soil C on forested, agricultural, and reclaimed lands. Both options include the potential for offsetting economic benefits to industry and society. Steps have been taken to assure that the GIS-based framework is consistent among types of sinks within the Big Sky Partnership area and with the efforts of other western DOE partnerships. Efforts are also being made to find funding to include Wyoming in the coverage areas for both geological and terrestrial sinks and sources. The Partnership recognizes the critical importance of measurement, monitoring, and verification technologies to support not only carbon trading but all policies and programs that DOE and other agencies may want to pursue in support of GHG mitigation. The efforts begun in developing and implementing MMV technologies for geological sequestration reflect this concern. Research is also underway to identify and validate best management practices for soil C in the partnership region, and to design a risk/cost effectiveness framework to make comparative assessments of each viable sink, taking into account economic costs, offsetting benefits, scale of sequestration opportunities, spatial and time dimensions, environmental risks, and long term viability. Scientifically sound information on MMV is critical for public acceptance of these technologies. Two key deliverables were completed this quarter--a literature review/database to assess the soil carbon on rangelands, and the draft protocols, contracting options for soil carbon trading. To date, there has been little research on soil carbon on rangelands, and since rangeland constitutes a major land use in the Big Sky region, this is important in achieving a better understanding of terrestrial sinks. The protocols developed for soil carbon trading are unique and provide a key component of the mechanisms that might be used to efficiently sequester GHG and reduce CO{sub 2} concentrations. Progress on other deliverables is noted in the PowerPoint presentations. A series of meetings held during the second quarter have laid the foundations for assessing the issues surrounding the implementation of a market-based setting for soil C credits. These meetings provide a connection to stakeholders in the region and a basis on which to draw for the DOE PEIS hearings. Finally, the education and outreach efforts have resulted in a comprehensive plan and process which serves as a guide for implementing the outreach activities under Phase I. While we are still working on the public website, we have made many presentations to stakeholders and policy makers, connections to other federal and state agencies concerned with GHG emissions, climate change, and efficient and environmentally-friendly energy production. In addition, we have laid plans for integration of our outreach efforts with the students, especially at the tribal colleges and at the universities involved in our partnership. This includes collaboration with the film and media arts departments at MSU, with outreach effort

  1. Energetic deposition of metal ions: Observation of self-sputtering and limited sticking for off-normal angles of incidence

    SciTech Connect (OSTI)

    Wu, Hongchen; Anders, Andre

    2009-09-15

    The deposition of films under normal and off-normal angle of incidence has been investigated to show the relevance of non-sticking of and self-sputtering by energetic ions, leading to the formation of neutral atoms. The flow of energetic ions was obtained using a filtered cathodic arc system in high vacuum and therefore the ion flux had a broad energy distribution of typically 50-100 eV per ion. The range of materials included Cu, Ag, Au, Ti, and Ni. Consistent with molecular dynamics simulations published in the literature, the experiments show, for all materials, that the combined effects of non-sticking and self-sputtering are very significant, especially for large off-normal angles. Modest heating and intentional introduction of oxygen background affect the results.

  2. BIG SKY CARBON SEQUESTRATION PARTNERSHIP

    SciTech Connect (OSTI)

    Susan M. Capalbo

    2005-01-31

    The Big Sky Carbon Sequestration Partnership, led by Montana State University, is comprised of research institutions, public entities and private sectors organizations, and the Confederated Salish and Kootenai Tribes and the Nez Perce Tribe. Efforts under this Partnership in Phase I fall into four areas: evaluation of sources and carbon sequestration sinks that will be used to determine the location of pilot demonstrations in Phase II; development of GIS-based reporting framework that links with national networks; designing an integrated suite of monitoring, measuring, and verification technologies and assessment frameworks; and initiating a comprehensive education and outreach program. The groundwork is in place to provide an assessment of storage capabilities for CO{sub 2} utilizing the resources found in the Partnership region (both geological and terrestrial sinks), that would complement the ongoing DOE research. Efforts are underway to showcase the architecture of the GIS framework and initial results for sources and sinks. The region has a diverse array of geological formations that could provide storage options for carbon in one or more of its three states. Likewise, initial estimates of terrestrial sinks indicate a vast potential for increasing and maintaining soil C on forested, agricultural, and reclaimed lands. Both options include the potential for offsetting economic benefits to industry and society. Steps have been taken to assure that the GIS-based framework is consistent among types of sinks within the Big Sky Partnership area and with the efforts of other western DOE partnerships. The Partnership recognizes the critical importance of measurement, monitoring, and verification technologies to support not only carbon trading but all policies and programs that DOE and other agencies may want to pursue in support of GHG mitigation. The efforts in developing and implementing MMV technologies for geological sequestration reflect this concern. Research is also underway to identify and validate best management practices for soil C in the Partnership region, and to design a risk/cost effectiveness framework to make comparative assessments of each viable sink, taking into account economic costs, offsetting benefits, scale of sequestration opportunities, spatial and time dimensions, environmental risks, and long-term viability. Scientifically sound information on MMV is critical for public acceptance of these technologies.

  3. CHARACTERIZATION OF SURFACE ROUGHNESS AND INITIAL CONDITIONS FOR CYLINDRICAL HYDRODYNAMIC

    E-Print Network [OSTI]

    Barnes, Cris W.

    CHARACTERIZATION OF SURFACE ROUGHNESS AND INITIAL CONDITIONS FOR CYLINDRICAL HYDRODYNAMIC AND MIX across a variable density interface, that interface must be well characterized. There exist a number, characterizing, and affecting the surface roughness was driven by Ablative Rayleigh-Taylor work5

  4. Counterintuitive MCNPX Results for Scintillator Surface Roughness Effect

    SciTech Connect (OSTI)

    2012-08-12

    We have reported on our recent MCNPX simulation results of energy deposition for a group of 8 scintillation detectors, coupled with various rough surface patterns. The MCNPX results generally favored the detectors with various rough surface patterns. The observed MCNPX results are not fully explained by this work.

  5. Big Data ja vakuutustoiminta Oulun yliopisto 28.1.2014

    E-Print Network [OSTI]

    Klemelä, Jussi

    Big Data ja vakuutustoiminta Oulun yliopisto 28.1.2014 Lasse Koskinen Model IT & Aalto University; Finland 1 #12;Agenda · Model IT · The age of Big Data · Not generally accepted definition · Important #12;Big Data Creates Value · The use of big data offers tremendous potential for creating value · Mc

  6. Big Data Applications in Cloud and Cyber Security

    E-Print Network [OSTI]

    Sandhu, Ravi

    Big Data Applications in Cloud and Cyber Security Prof. Ravi Sandhu Executive Director and Endowed Professor UTSA COB Symposium on Big Data, Big Challenges March 17, 2015 ravi.sandhu@utsa.edu www Security 1 #12;© Ravi Sandhu 2 World-Leading Research with Real-World Impact! Big Data Volume Variety

  7. The SIKS/BiGGrid Big Data Tutorial Djoerd Hiemstra

    E-Print Network [OSTI]

    Hiemstra, Djoerd

    The SIKS/BiGGrid Big Data Tutorial Djoerd Hiemstra U. Twente, The Netherlands d BiG Grid organized a new two- day tutorial on Big Data at the University of Twente on 30 November terabytes of data on large clusters, and discusses several core computer science top- ics adapted for big

  8. Statistical Inference, Learning and Models for Big Data

    E-Print Network [OSTI]

    Knight, Keith

    Statistical Inference, Learning and Models for Big Data Steering Committee Yoshua Bengio Hugh: Strategies and Principles Feb 23 - 27 · Big Data in Health Policy Mar 23 - 27 · Big Data for Social Policy Jordan, UC Berkeley, April 7, 8 and 9 · Andrew Lo, MIT March 25 ­ law, finance and big data · Graduate

  9. Big Data As Complementary Audit Kyunghee Yoon, Rutgers Business School

    E-Print Network [OSTI]

    Big Data As Complementary Audit Evidence Kyunghee Yoon, Rutgers Business School Lucas Hoogduin variety of information - High litigation risks - Advanced technologies · Big data and big data analytics (SAS No. 106) #12;Sufficiency consideration 1. Relevant external big data could be a complement

  10. Astronomical Surveys and Big Data

    E-Print Network [OSTI]

    Mickaelian, A M

    2015-01-01

    Recent all-sky and large-area astronomical surveys and their catalogued data over the whole range of electromagnetic spectrum are reviewed, from Gamma-ray to radio, such as Fermi-GLAST and INTEGRAL in Gamma-ray, ROSAT, XMM and Chandra in X-ray, GALEX in UV, SDSS and several POSS I and II based catalogues (APM, MAPS, USNO, GSC) in optical range, 2MASS in NIR, WISE and AKARI IRC in MIR, IRAS and AKARI FIS in FIR, NVSS and FIRST in radio and many others, as well as most important surveys giving optical images (DSS I and II, SDSS, etc.), proper motions (Tycho, USNO, Gaia), variability (GCVS, NSVS, ASAS, Catalina, Pan-STARRS) and spectroscopic data (FBS, SBS, Case, HQS, HES, SDSS, CALIFA, GAMA). An overall understanding of the coverage along the whole wavelength range and comparisons between various surveys are given: galaxy redshift surveys, QSO/AGN, radio, Galactic structure, and Dark Energy surveys. Astronomy has entered the Big Data era. Astrophysical Virtual Observatories and Computational Astrophysics play a...

  11. Quality of Big Data in Healthcare

    SciTech Connect (OSTI)

    Sukumar, Sreenivas R; Ramachandran, Natarajan; Ferrell, Regina Kay

    2015-01-01

    The current trend in Big Data Analytics and in particular Health information technology is towards building sophisticated models, methods and tools for business, operational and clinical intelligence, but the critical issue of data quality required for these models is not getting the attention it deserves. The objective of the paper is to highlight the issues of data quality in the context of Big Data Healthcare Analytics.

  12. BIG SKY CARBON SEQUESTRATION PARTNERSHIP

    SciTech Connect (OSTI)

    Susan M. Capalbo

    2004-10-31

    The Big Sky Carbon Sequestration Partnership, led by Montana State University, is comprised of research institutions, public entities and private sectors organizations, and the Confederated Salish and Kootenai Tribes and the Nez Perce Tribe. Efforts under this Partnership fall into four areas: evaluation of sources and carbon sequestration sinks; development of GIS-based reporting framework; designing an integrated suite of monitoring, measuring, and verification technologies; and initiating a comprehensive education and outreach program. At the first two Partnership meetings the groundwork was put in place to provide an assessment of capture and storage capabilities for CO{sub 2} utilizing the resources found in the Partnership region (both geological and terrestrial sinks), that would complement the ongoing DOE research. During the third quarter, planning efforts are underway for the next Partnership meeting which will showcase the architecture of the GIS framework and initial results for sources and sinks, discuss the methods and analysis underway for assessing geological and terrestrial sequestration potentials. The meeting will conclude with an ASME workshop. The region has a diverse array of geological formations that could provide storage options for carbon in one or more of its three states. Likewise, initial estimates of terrestrial sinks indicate a vast potential for increasing and maintaining soil C on forested, agricultural, and reclaimed lands. Both options include the potential for offsetting economic benefits to industry and society. Steps have been taken to assure that the GIS-based framework is consistent among types of sinks within the Big Sky Partnership area and with the efforts of other western DOE partnerships. Efforts are also being made to find funding to include Wyoming in the coverage areas for both geological and terrestrial sinks and sources. The Partnership recognizes the critical importance of measurement, monitoring, and verification technologies to support not only carbon trading but all policies and programs that DOE and other agencies may want to pursue in support of GHG mitigation. The efforts begun in developing and implementing MMV technologies for geological sequestration reflect this concern. Research is also underway to identify and validate best management practices for soil C in the Partnership region, and to design a risk/cost effectiveness framework to make comparative assessments of each viable sink, taking into account economic costs, offsetting benefits, scale of sequestration opportunities, spatial and time dimensions, environmental risks, and long-term viability. Scientifically sound information on MMV is critical for public acceptance of these technologies. Two key deliverables were completed in the second quarter--a literature review/database to assess the soil carbon on rangelands, and the draft protocols, contracting options for soil carbon trading. The protocols developed for soil carbon trading are unique and provide a key component of the mechanisms that might be used to efficiently sequester GHG and reduce CO{sub 2} concentrations. While no key deliverables were due during the third quarter, progress on other deliverables is noted in the PowerPoint presentations and in this report. A series of meetings held during the second and third quarters have laid the foundations for assessing the issues surrounding carbon sequestration in this region, the need for a holistic approach to meeting energy demands and economic development potential, and the implementation of government programs or a market-based setting for soil C credits. These meetings provide a connection to stakeholders in the region and a basis on which to draw for the DOE PEIS hearings. In the fourth quarter, three deliverables have been completed, some in draft form to be revised and updated to include Wyoming. This is due primarily to some delays in funding to LANL and INEEL and the approval of a supplemental proposal to include Wyoming in much of the GIS data sets, analysis, and related materials. The de

  13. BIG SKY CARBON SEQUESTRATION PARTNERSHIP

    SciTech Connect (OSTI)

    Susan M. Capalbo

    2004-06-30

    The Big Sky Carbon Sequestration Partnership, led by Montana State University, is comprised of research institutions, public entities and private sectors organizations, and the Confederated Salish and Kootenai Tribes and the Nez Perce Tribe. Efforts under this Partnership fall into four areas: evaluation of sources and carbon sequestration sinks; development of GIS-based reporting framework; designing an integrated suite of monitoring, measuring, and verification technologies; and initiating a comprehensive education and outreach program. At the first two Partnership meetings the groundwork was put in place to provide an assessment of capture and storage capabilities for CO{sub 2} utilizing the resources found in the Partnership region (both geological and terrestrial sinks), that would complement the ongoing DOE research. During the third quarter, planning efforts are underway for the next Partnership meeting which will showcase the architecture of the GIS framework and initial results for sources and sinks, discuss the methods and analysis underway for assessing geological and terrestrial sequestration potentials. The meeting will conclude with an ASME workshop (see attached agenda). The region has a diverse array of geological formations that could provide storage options for carbon in one or more of its three states. Likewise, initial estimates of terrestrial sinks indicate a vast potential for increasing and maintaining soil C on forested, agricultural, and reclaimed lands. Both options include the potential for offsetting economic benefits to industry and society. Steps have been taken to assure that the GIS-based framework is consistent among types of sinks within the Big Sky Partnership area and with the efforts of other western DOE partnerships. Efforts are also being made to find funding to include Wyoming in the coverage areas for both geological and terrestrial sinks and sources. The Partnership recognizes the critical importance of measurement, monitoring, and verification technologies to support not only carbon trading but all policies and programs that DOE and other agencies may want to pursue in support of GHG mitigation. The efforts begun in developing and implementing MMV technologies for geological sequestration reflect this concern. Research is also underway to identify and validate best management practices for soil C in the Partnership region, and to design a risk/cost effectiveness framework to make comparative assessments of each viable sink, taking into account economic costs, offsetting benefits, scale of sequestration opportunities, spatial and time dimensions, environmental risks, and long-term viability. Scientifically sound information on MMV is critical for public acceptance of these technologies. Two key deliverables were completed in the second quarter--a literature review/database to assess the soil carbon on rangelands, and the draft protocols, contracting options for soil carbon trading. The protocols developed for soil carbon trading are unique and provide a key component of the mechanisms that might be used to efficiently sequester GHG and reduce CO2 concentrations. While no key deliverables were due during the third quarter, progress on other deliverables is noted in the PowerPoint presentations and in this report. A series of meetings held during the second and third quarters have laid the foundations for assessing the issues surrounding carbon sequestration in this region, the need for a holistic approach to meeting energy demands and economic development potential, and the implementation of government programs or a market-based setting for soil C credits. These meetings provide a connection to stakeholders in the region and a basis on which to draw for the DOE PEIS hearings. A third Partnership meeting has been planned for August 04 in Idaho Falls; a preliminary agenda is attached.

  14. Big Sky Carbon Sequestration Partnership

    SciTech Connect (OSTI)

    Susan M. Capalbo

    2005-11-01

    The Big Sky Carbon Sequestration Partnership, led by Montana State University, is comprised of research institutions, public entities and private sectors organizations, and the Confederated Salish and Kootenai Tribes and the Nez Perce Tribe. Efforts under this Partnership in Phase I fall into four areas: evaluation of sources and carbon sequestration sinks that will be used to determine the location of pilot demonstrations in Phase II; development of GIS-based reporting framework that links with national networks; designing an integrated suite of monitoring, measuring, and verification technologies and assessment frameworks; and initiating a comprehensive education and outreach program. The groundwork is in place to provide an assessment of storage capabilities for CO2 utilizing the resources found in the Partnership region (both geological and terrestrial sinks), that would complement the ongoing DOE research agenda in Carbon Sequestration. The region has a diverse array of geological formations that could provide storage options for carbon in one or more of its three states. Likewise, initial estimates of terrestrial sinks indicate a vast potential for increasing and maintaining soil C on forested, agricultural, and reclaimed lands. Both options include the potential for offsetting economic benefits to industry and society. Steps have been taken to assure that the GIS-based framework is consistent among types of sinks within the Big Sky Partnership area and with the efforts of other DOE regional partnerships. The Partnership recognizes the critical importance of measurement, monitoring, and verification technologies to support not only carbon trading but all policies and programs that DOE and other agencies may want to pursue in support of GHG mitigation. The efforts in developing and implementing MMV technologies for geological sequestration reflect this concern. Research is also underway to identify and validate best management practices for soil C in the Partnership region, and to design a risk/cost effectiveness framework to make comparative assessments of each viable sink, taking into account economic costs, offsetting benefits, scale of sequestration opportunities, spatial and time dimensions, environmental risks, and long-term viability. Scientifically sound MMV is critical for public acceptance of these technologies. Deliverables for the 7th Quarter reporting period include (1) for the geological efforts: Reports on Technology Needs and Action Plan on the Evaluation of Geological Sinks and Pilot Project Deployment (Deliverables 2 and 3), and Report on the Feasibility of Mineralization Trapping in the Snake River Plain Basin (Deliverable 14); (2) for the terrestrial efforts: Report on the Evaluation of Terrestrial Sinks and a Report of the Best Production Practices for Soil C Sequestration (Deliverables 8 and 15). In addition, the 7th Quarter activities for the Partnership included further development of the proposed activities for the deployment and demonstration phase of the carbon sequestration pilots including geological and terrestrial pilots, expansion of the Partnership to encompass regions and institutions that are complimentary to the steps we have identified, building greater collaborations with industry and stakeholders in the region, contributed to outreach efforts that spanned all partnerships, co-authorship on the Carbon Capture and Separation report, and developed a regional basis to address future energy opportunities in the region. The deliverables and activities are discussed in the following sections and appended to this report. The education and outreach efforts have resulted in a comprehensive plan which serves as a guide for implementing the outreach activities under Phase I. The public website has been expanded and integrated with the GIS carbon atlas. We have made presentations to stakeholders and policy makers including two tribal sequestration workshops, and made connections to other federal and state agencies concerned with GHG emissions, climate change, and efficient and environmental

  15. Gravitational quantum states of neutrons in a rough waveguide

    E-Print Network [OSTI]

    A. E. Meyerovich; V. V. Nesvizhevsky

    2006-03-22

    A theory of gravitational quantum states of ultracold neutrons in waveguides with absorbing/scattering walls is presented. The theory covers recent experiments in which the ultracold neutrons were beamed between a mirror and a rough scatterer/absorber. The analysis is based on a recently developed theory of quantum transport along random rough walls which is modified in order to include leaky (absorbing) interfaces and, more importantly, the low-amplitude high-aperture roughness. The calculations are focused on a regime when the direct transitions into the continuous spectrum above the absorption threshold dominate the depletion of neutrons from the gravitational states and are more efficient than the processes involving the intermediate states. The theoretical results for the neutron count are sensitive to the correlation radius (lateral size) of surface inhomogeneities and to the ratio of the particle energy to the absorption threshold in a weak roughness limit. The main impediment for observation of the higher gravitational states is the "overhang" of the particle wave functions which can be overcome only by use scatterers with strong roughness. In general, the strong roughness with high amplitude is preferable if one wants just to detect the individual gravitational states, while the strong roughness experiments with small amplitude and high aperture are preferable for the quantitative analysis of the data. We also discuss the ways to further improve the accuracy of calculations and to optimize the experimental regime.

  16. Big Sky Carbon Sequestration Partnership

    SciTech Connect (OSTI)

    Susan Capalbo

    2005-12-31

    The Big Sky Carbon Sequestration Partnership, led by Montana State University, is comprised of research institutions, public entities and private sectors organizations, and the Confederated Salish and Kootenai Tribes and the Nez Perce Tribe. Efforts under this Partnership in Phase I are organized into four areas: (1) Evaluation of sources and carbon sequestration sinks that will be used to determine the location of pilot demonstrations in Phase II; (2) Development of GIS-based reporting framework that links with national networks; (3) Design of an integrated suite of monitoring, measuring, and verification technologies, market-based opportunities for carbon management, and an economic/risk assessment framework; (referred to below as the Advanced Concepts component of the Phase I efforts) and (4) Initiation of a comprehensive education and outreach program. As a result of the Phase I activities, the groundwork is in place to provide an assessment of storage capabilities for CO{sub 2} utilizing the resources found in the Partnership region (both geological and terrestrial sinks), that complements the ongoing DOE research agenda in Carbon Sequestration. The geology of the Big Sky Carbon Sequestration Partnership Region is favorable for the potential sequestration of enormous volume of CO{sub 2}. The United States Geological Survey (USGS 1995) identified 10 geologic provinces and 111 plays in the region. These provinces and plays include both sedimentary rock types characteristic of oil, gas, and coal productions as well as large areas of mafic volcanic rocks. Of the 10 provinces and 111 plays, 1 province and 4 plays are located within Idaho. The remaining 9 provinces and 107 plays are dominated by sedimentary rocks and located in the states of Montana and Wyoming. The potential sequestration capacity of the 9 sedimentary provinces within the region ranges from 25,000 to almost 900,000 million metric tons of CO{sub 2}. Overall every sedimentary formation investigated has significant potential to sequester large amounts of CO{sub 2}. Simulations conducted to evaluate mineral trapping potential of mafic volcanic rock formations located in the Idaho province suggest that supercritical CO{sub 2} is converted to solid carbonate mineral within a few hundred years and permanently entombs the carbon. Although MMV for this rock type may be challenging, a carefully chosen combination of geophysical and geochemical techniques should allow assessment of the fate of CO{sub 2} in deep basalt hosted aquifers. Terrestrial carbon sequestration relies on land management practices and technologies to remove atmospheric CO{sub 2} where it is stored in trees, plants, and soil. This indirect sequestration can be implemented today and is on the front line of voluntary, market-based approaches to reduce CO{sub 2} emissions. Initial estimates of terrestrial sinks indicate a vast potential for increasing and maintaining soil Carbon (C) on rangelands, and forested, agricultural, and reclaimed lands. Rangelands can store up to an additional 0.05 mt C/ha/yr, while the croplands are on average four times that amount. Estimates of technical potential for soil sequestration within the region in cropland are in the range of 2.0 M mt C/yr over 20 year time horizon. This is equivalent to approximately 7.0 M mt CO{sub 2}e/yr. The forestry sinks are well documented, and the potential in the Big Sky region ranges from 9-15 M mt CO{sub 2} equivalent per year. Value-added benefits include enhanced yields, reduced erosion, and increased wildlife habitat. Thus the terrestrial sinks provide a viable, environmentally beneficial, and relatively low cost sink that is available to sequester C in the current time frame. The Partnership recognizes the critical importance of measurement, monitoring, and verification technologies to support not only carbon trading but all policies and programs that DOE and other agencies may want to pursue in support of GHG mitigation. The efforts in developing and implementing MMV technologies for geological and terrestrial sequestration re

  17. Apple Tree, NH Big Tree for May By Anne Krantz, NH Big Tree Team,

    E-Print Network [OSTI]

    New Hampshire, University of

    Apple Tree, NH Big Tree for May By Anne Krantz, NH Big Tree Team, UNH Cooperative Extension The explosion of apple blossoms in May transforms the most gnarled old tree into a delicate cloud of beauty (1817-1862) in his essay "The Wild Apple Tree," described the blossoms perfectly: `The flowers

  18. Wetting on Random Roughness: the Ubiquity of Wenzel Prewetting

    E-Print Network [OSTI]

    Stephan Herminghaus

    2012-03-23

    The wetting properties of solid substrates with macroscopic random roughness are considered as a function of the microscopic contact angle of the wetting liquid and its partial pressure in the surrounding gas phase. It is shown that Wenzel prewetting, which has been recently predicted for a rather wide class of roughness pro?les derived from Gaussian random processes by a general distortion procedure, should in fact be ubiquitous and prevail under even much milder conditions. The well-known transition occurring at Wenzel's angle is accompanied by a prewetting transition, at which a jump in the adsorbed liquid volume occurs. This should be present on most surfaces bearing homogeneous, isotropic random roughness.

  19. Testing Vpin on Big Data Response to Reflecting on the Vpin Dispute

    E-Print Network [OSTI]

    Wu, Kesheng

    2014-01-01

    Wu,  K. ,  et  al.   A  Big  Data  Approach  to  Analyzing  Testing VPIN on Big Data -- Response to “Reflecting on theTesting  VPIN  on  Big  Data    –  Response  to  “

  20. Solution Path Clustering with Minimax Concave Penalty and Its Applications to Noisy Big Data

    E-Print Network [OSTI]

    Marchetti, Yuliya

    2014-01-01

    Path Clustering of Noisy Big Data . . . . . . . . . . . .Y. Wah, and T. Herawan. “Big Data Clustering: A Review. ” InPath Clustering of Noisy Big Data Introduction In this

  1. Big Data Analaysis and Visualization: What Do LINACS and Tropical Storms Have In Common?

    E-Print Network [OSTI]

    Bethel, E. Wes

    2013-01-01

    Big Data Analaysis and Visualization: What Do LINACS andof California. BIG DATA ANALYSIS AND VISUALIZATION: WHAT DOproblems. INTRODUCTION Big data and its attendant

  2. Influence of surface roughness and waviness upon thermal contact resistance

    E-Print Network [OSTI]

    Yovanovich, M. Michael

    1967-01-01

    This work deals with the phenomenon of thermal resistance between contacting solids. Attention is directed towards contiguous solids possessing both surface roughness and waviness. When two such surfaces are brought together ...

  3. Effect of Surface Roughness on Wind Turbine Performance 

    E-Print Network [OSTI]

    Ehrmann, Robert Schaefer

    2014-06-25

    Wind farm operators observe production deficits as machines age. Quantifying deterioration on individual components is difficult, but one potential explanation is accumulation of blade surface roughness. Historically, wind turbine airfoils were...

  4. PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH

    E-Print Network [OSTI]

    Smith, Hart F.

    PROPAGATION OF SINGULARITIES FOR ROUGH METRICS HART F. SMITH Abstract. We use a wave packet the Simons Foundation (# 266371 to Hart Smith). 1 #12;2 HART F. SMITH H¨ormander's theorem [9] on propagation

  5. Hypersonic Measurements of Roughness-Induced Transient Growth 

    E-Print Network [OSTI]

    Sharp, Nicole Susanne

    2014-04-17

    The effects of surface roughness on boundary-layer disturbance growth and laminar-to-turbulent transition are not well understood, especially in hypersonic boundary layers. The transient growth mechanism that produces algebraic growth of stream wise...

  6. Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc | Department...

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

    Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc Sept 2001 Rough Draft OFFM Policy Letter 02-1.doc More Documents & Publications...

  7. Big Brothers needed in Northern New Mexico

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11DESERTWaterSharingBeyondBang or BigBig

  8. The Politics of European Collaboration in Big Olof Hallonsten

    E-Print Network [OSTI]

    Bongartz, Klaus

    politics. Keywords Big Science · CERN · Common market · European Atomic Energy Community (EURATOMThe Politics of European Collaboration in Big Science Olof Hallonsten Abstract Intergovernmental outside of the political integration work of the European Community/Union, which has resulted

  9. Solar Goes Big: Launching the California Valley Solar Ranch ...

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

    Solar Goes Big: Launching the California Valley Solar Ranch Solar Goes Big: Launching the California Valley Solar Ranch October 31, 2013 - 4:14pm Addthis The California Valley...

  10. At Vogtle, Big Results with Nuclear Power | Department of Energy

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

    At Vogtle, Big Results with Nuclear Power At Vogtle, Big Results with Nuclear Power February 20, 2014 - 1:29pm Addthis Construction work inside the Vogtle 3 and 4 module assembly...

  11. BigNeuron: Unlocking the Secrets of the Human Brain

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

    BigNeuron: Unlocking the Secrets of the Human Brain BigNeuron: Unlocking the Secrets of the Human Brain Berkeley Researchers and Supercomputers to Help Create a Standard 3D Neuron...

  12. Distributed Wind Market Report: Small Turbines Lead to Big Growth...

    Energy Savers [EERE]

    Distributed Wind Market Report: Small Turbines Lead to Big Growth in Exports Distributed Wind Market Report: Small Turbines Lead to Big Growth in Exports August 18, 2014 - 12:13pm...

  13. Photon Speedway Puts Big Data In the Fast Lane

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

    Photon Speedway Puts Big Data In the Fast Lane Photon Speedway Puts Big Data In the Fast Lane Scientists from Berkeley Lab and SLAC are using NERSC and ESnet to achieve...

  14. PERSPECTIVES Deep Earthquakes: A Fault Too Big?

    E-Print Network [OSTI]

    Stein, Seth

    PERSPECTIVES Deep Earthquakes: A Fault Too Big? Seth Stein Because deep Earth processes are inacces. Recent results for the mys- terious deep earthquakes that occur to depths greater than 600 km is that large deep earthquakes (1-3) seem to have occurred on faults larger than ex- pected from the competing

  15. Space Time Quantization and the Big Bang

    E-Print Network [OSTI]

    B. G. Sidharth

    1998-06-21

    A recent cosmological model is recapitulated which deduces the correct mass, radius and age of the universe as also the Hubble constant and other well known apparently coincidental relations. It also predicts an ever expanding accelerating universe as is confirmed by latest supernovae observations. Finally the Big Bang model is recovered as a suitable limiting case.

  16. How to think big The 20th

    E-Print Network [OSTI]

    Lonardi, Stefano

    ,200 to .033 cents)* * Source: John McCallum, PC Direct #12;If only gas mileage improved as much as disk pricesHow to think big Udi Manber Google #12;· The 20th century was about taming nature (and winning wars performance has gone up by a factor of 3500 (1 MHz ­ 3.5GHz)* · Memory prices per megabyte are down

  17. ICME & MGI Big Area Additive Manufacturing

    E-Print Network [OSTI]

    ICME & MGI · Big Area Additive Manufacturing · Neutron Characterization for AM · Materials problems in additive manu- facturing (AM). Additive manufacturing, or three-dimensional (3-D) printing of the world's most advanced neu- tron facilities, the HFIR and SNS, to characterize additive manufactured

  18. No "big trips" for the universe

    E-Print Network [OSTI]

    Valerio Faraoni

    2007-02-27

    It has been claimed in several papers that a phantom energy-dominated universe can undergo a ``big trip'', i.e., tunneling through a wormhole that grows faster than the cosmic substratum due to the accretion of phantom energy, and will reappear on the other mouth of the wormhole. We show that such claims are unfounded and contradict the Einstein equations.

  19. Data Mining with Big Data Xindong Wu1,2

    E-Print Network [OSTI]

    Ding, Wei

    1 Data Mining with Big Data Xindong Wu1,2 , Xingquan Zhu3 , Gong-Qing Wu2 , Wei Ding4 1 School Boston, USA Abstract: Big Data concerns large-volume, complex, growing data sets with multiple, Big Data is now rapidly expanding in all science and engineering domains, including physical

  20. Mapping collective behavior in the big-data era

    E-Print Network [OSTI]

    Bentley, Alex

    Mapping collective behavior in the big-data era R. Alexander Bentley Department of Archaeology. Similarly, behavioral scientists now have access to "big data" sets ­ those from Twitter and Facebook & Reinsel 2011). These digital shadows are the subjects of "big data" research, which optimists see

  1. Statistical Inference, Learning and Models for Big Data

    E-Print Network [OSTI]

    Reid, Nancy

    Statistical Inference, Learning and Models for Big Data Nancy Reid University of Toronto P · Optimization and Matrix Methods Feb 9 ­ 11 · Visualization: Strategies and Principles Feb 23 ­ 27 · Big Data in Health Policy Mar 23 ­ 27 · Big Data for Social Policy Apr 13 ­ 16 #12;And more Distinguished Lecture

  2. Toward Effective Big Data Analysis in Continuous Auditing

    E-Print Network [OSTI]

    Toward Effective Big Data Analysis in Continuous Auditing By Juan Zhang, Xiongsheng Yang, and Deniz Appelbaum #12;Towards Effective Big Data Analysis Introduction New sources: emails, phone calls, click stream traffic, social media, news media, sensor recordings and videos, and RFID tags 4 V's of Big Data

  3. Cost aware real time big data processing in Cloud Environments

    E-Print Network [OSTI]

    Buyya, Rajkumar

    Cost aware real time big data processing in Cloud Environments By Cristian Montero Under and volatility of Big-data application workloads, it is difficult to decide when and how to scale up and down Environments . . . . . . . . . . . . . . . . . . . 9 2.2 Big Data

  4. When Recommenders Met Big Data An Architectural Proposal and Evaluation

    E-Print Network [OSTI]

    Coruña, Universidade da

    When Recommenders Met Big Data An Architectural Proposal and Evaluation Daniel Valcarce, Javier factor in the design of any system working with big data. In particular, it has been recognised as a main capable of making per- sonalised recommendations using collaborative filtering in a big data en- vironment

  5. Big Data: A Survey Min Chen Shiwen Mao Yunhao Liu

    E-Print Network [OSTI]

    Chen, Min

    Big Data: A Survey Min Chen · Shiwen Mao · Yunhao Liu © Springer Science+Business Media New York 2014 Abstract In this paper, we review the background and state-of-the-art of big data. We first introduce the general background of big data and review related technologies, such as could computing

  6. Behavioral Implications of Big Data's Impact on Audit Judgment

    E-Print Network [OSTI]

    Behavioral Implications of Big Data's Impact on Audit Judgment and Decision Making and Future state of Big Data with regards to the audit environment · Information processing weaknesses and limitations that can impede the effective use of Big Data in an audit environment, with a focus on

  7. Implementing 'Big Open Data' in government through Open Collaboration

    E-Print Network [OSTI]

    Baclawski, Kenneth B.

    1 Implementing 'Big Open Data' in government through Open Collaboration - case examples@mitre.org> Ken Baclawski Presented at the Joint DATA.GOV - ONTOLOG "Big Open Data" Session 17-May-2012 ( v1.02 ) #12;2ppy/lo/md/kb/Leveraging-OOR-in BigOpenData_May-2012 Presentation Outline

  8. Random Forests and Big Data Robin Genuer 1

    E-Print Network [OSTI]

    Villa-vialaneix, Nathalie

    Random Forests and Big Data Robin Genuer 1 , Jean-Michel Poggi 2 , Christine Tuleau-Malot3 Castanet Tolosan cedex, nathalie.villa@toulouse.inra.fr R´esum´e. Le Big Data est un des grands d´efis que. Le Big Data implique toujours le caract`ere massif des donn´ees mais comprend bien souvent aussi des

  9. Big Data, the Crowd, and Me Cathy Marshall

    E-Print Network [OSTI]

    Marshall, Cathy

    Big Data, the Crowd, and Me Cathy Marshall Microsoft Research, Silicon Valley Like many of you, I've been swept up by the romance of Big Data. But instead of stepping back and taking the long view, in this account I plan to get enmired in the details and tell you a story about my own Big Data dalliance

  10. Exploring big data opportunities for Online Customer Segmentation

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Exploring big data opportunities for Online Customer Segmentation Georgia Fotaki Marco Spruit Sjaak University P.O. Box 80.089 3508 TB Utrecht The Netherlands #12;iii Exploring big data opportunities and analyzing the huge amount of data; and this is where the concept of "Big Data" can play an essential role

  11. Orchestrating Science DMZs for Big Data Acceleration: Challenges and Approaches

    E-Print Network [OSTI]

    Calyam, Prasad

    Orchestrating Science DMZs for Big Data Acceleration: Challenges and Approaches Saptarshi Debroy: {debroysa, calyamp, dickinsonmg}@missouri.edu. I. INTRODUCTION A. What is Science Big Data? In recent years computing centers, experiments and simulations produce peta-bytes of data viz., Big Data, that is likely

  12. One Statistician's Perspectives on Statistics and "Big Data" Analytics

    E-Print Network [OSTI]

    Vardeman, Stephen B.

    One Statistician's Perspectives on Statistics and "Big Data" Analytics Some (Ultimately 2014 Vardeman (Iowa State University) Perspectives on "Big Data" Analytics July 2014 1 / 16 #12;My/modern-multivariate-statistical-learning/ Vardeman (Iowa State University) Perspectives on "Big Data" Analytics July 2014 2 / 16 #12;Some (Indirect

  13. The Foundation of Big Data: Experiments, Formulation, and Applications

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    The Foundation of Big Data: Experiments, Formulation, and Applications Robert C. Qiu 1 1 . In the age of Big Data, the size of n is large, but FINITE! The large but finite n asks for a new paradigm for big data analysis. Size is the only thing that matters. It is natural to model massive datasets

  14. Rethinking Abstractions for Big Data: Why, Where, How, and What

    E-Print Network [OSTI]

    Kirby, Mike

    Rethinking Abstractions for Big Data: Why, Where, How, and What Mary Hall, Robert M. Kirby, Feifei Venkatasubramanian, University of Utah June 17, 2013 Big data refers to large and complex data sets that, under, analytical tools and human understanding [7]. Numerous lessons on the scalability of big data can already

  15. IMPLICATIONS OF NON-MAXWELLIAN DISTRIBUTIONS ON BIG BANG NUCLEOSYNTHESIS

    E-Print Network [OSTI]

    Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

    #12;IMPLICATIONS OF NON-MAXWELLIAN DISTRIBUTIONS ON BIG BANG NUCLEOSYNTHESIS A Thesis by JOHN FUQUA ON BIG BANG NUCLEOSYNTHESIS A Thesis by JOHN FUQUA Approved by: Advisor: Carlos Bertulani Committee-MAXWELLIAN DISTRIBUTIONS ON BIG BANG NUCLEOSYNTHESIS John Fuqua, MS Texas A&M University-Commerce, 2013 Advisor: Carlos

  16. Visualizing Distributed Data with BigWig and BigBed at UCSC (2010 JGI/ANL HPC Workshop)

    ScienceCinema (OSTI)

    Kent, Jim [UCSC

    2011-06-08

    Jim Kent from University of California, Santa Cruz presents on "Visualizing Distributed Data with BigWig and BigBed at UCSC" at the JGI/Argonne HPC Workshop on January 26, 2010.

  17. IOL: Africa's big plans for biofuel Africa's big plans for biofuel

    E-Print Network [OSTI]

    IOL: Africa's big plans for biofuel Africa's big plans for biofuel By Clare Byrne Visitors for the production of fuel crops. http://www.iol.co.za/general/news/newsprint.php?art_id=nw20071106135542969C112694&sf= (1 of 3) [11/11/2008 11:48:04 AM] http://www.iol.co.za/index.php?set_id=1&click_id=31&art

  18. Application of Rough Set Theory to Analysis of Hydrocyclone Operation

    E-Print Network [OSTI]

    Owladeghaffari, H; Irannajad, M

    2008-01-01

    This paper describes application of rough set theory, on the analysis of hydrocyclone operation. In this manner, using Self Organizing Map (SOM) as preprocessing step, best crisp granules of data are obtained. Then, using a combining of SOM and rough set theory (RST)-called SORST-, the dominant rules on the information table, obtained from laboratory tests, are extracted. Based on these rules, an approximate estimation on decision attribute is fulfilled. Finally, a brief comparison of this method with the SOM-NFIS system (briefly SONFIS) is highlighted.

  19. E ective boundary conditions for laminar ows over periodic rough boundaries

    E-Print Network [OSTI]

    Achdou, Yves

    E#27;ective boundary conditions for laminar #29;ows over periodic rough boundaries Yves Achdou #3 are proposed for a laminar #29;ow over a rough wall with periodic roughness elements. These e#27;ective is such an approach ? In this paper, we wish to answer these questions for laminar #29;ows over periodic rough walls

  20. Big Rock Point severe accident management strategies

    SciTech Connect (OSTI)

    Brogan, B.A. [Consumers Power Co., Charlevoix, MI (United States); Gabor, J.R. [Dames and Moore, Westmont, IL (United States)

    1996-07-01

    December 1994, the Nuclear Energy Institute (NEI) issued guidance relative to the formal industry position on Severe Accident Management (SAM) approved by the NEI Strategic Issues Advisory Committee on November 4, 1994. This paper summarizes how Big Rock Point (BRP) has and continues to address SAM strategies. The historical accounting portion of this presentation includes a description of how the following projects identified and defined the current Big Rock Point SAM strategies: the 1981 Level 3 Probabilistic Risk Assessment performance; the development of the Plant Specific Technical Guidelines from which the symptom oriented Emergency Operating Procedures (EOPs) were developed; the Control Room Design Review; and, the recent completion of the Individual Plant Evaluation (IPE). In addition to the historical presentation deliberation, this paper the present activities that continue to stress SAM strategies.

  1. ORIGINAL PAPER Transient Heat Conduction Between Rough Sliding Surfaces

    E-Print Network [OSTI]

    Awtar, Shorya

    , and the results are combined with the height distributions to determine the mean heat flux and the mean normal increases with the square root of the sliding speed and decreases with the 3/4 power of the combined RMSORIGINAL PAPER Transient Heat Conduction Between Rough Sliding Surfaces Yuwei Liu · J. R. Barber

  2. Analysis of the Scattering by an Unbounded Rough Surface

    E-Print Network [OSTI]

    2011-11-12

    eling acoustic and electromagnetic wave propagation over outdoor ground and sea surfaces, optical scattering from the ... been intensively examined by researchers in the engineering community. ..... explicit characterization of the norm in H1(?) via Fourier coefficient: ...... rough surfaces, Wave Motion, 24 (1996)

  3. LARGE EDDY SIMULATION OF TURBULENT BOUNDARY LAYERS OVER ROUGH BEDS

    E-Print Network [OSTI]

    Pawlak, Geno

    that determines the response of the boundary layer is not clear. One method to characterize the irregular nature with different spectral slopes using 2D 10 % loading square waves as basis functions. These square waves can) is then used to simulate the turbulent boundary layer over the rough beds. The LES solver is first validated

  4. Dark Radiation Emerging After Big Bang Nucleosynthesis?

    E-Print Network [OSTI]

    Willy Fischler; Joel Meyers

    2011-02-28

    We show how recent data from observations of the cosmic microwave background may suggest the presence of additional radiation density which appeared after big bang nucleosynthesis. We propose a general scheme by which this radiation could be produced from the decay of non-relativistic matter, we place constraints on the properties of such matter, and we give specific examples of scenarios in which this general scheme may be realized.

  5. Dark radiation emerging after big bang nucleosynthesis?

    SciTech Connect (OSTI)

    Fischler, Willy; Meyers, Joel [Theory Group, Department of Physics, University of Texas, Austin, Texas 78712 (United States) and Texas Cosmology Center, University of Texas, Austin, Texas 78712 (United States)

    2011-03-15

    We show how recent data from observations of the cosmic microwave background may suggest the presence of additional radiation density which appeared after big bang nucleosynthesis. We propose a general scheme by which this radiation could be produced from the decay of nonrelativistic matter, we place constraints on the properties of such matter, and we give specific examples of scenarios in which this general scheme may be realized.

  6. Big Bang Nucleosynthesis and Primordial Black Holes

    E-Print Network [OSTI]

    C. Sivaram; Kenath Arun

    2010-06-28

    There are ongoing efforts in detecting Hawking radiation from primordial black holes (PBH) formed during the early universe. Here we put an upper limit on the PBH number density that could have been formed prior to the big bang nucleosynthesis era, based on the constraint that the PBH evaporation energy consisting of high energy radiation not affect the observed abundances' of elements, by disintegrating the nuclei.

  7. Tackling Big Data Together | 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 RankADVANCED MANUFACTURINGEnergyPlan | DepartmentXIII--SMART GRID SEC.Quadrennial Technology Review AboutBig

  8. Stick-On Electronic Tattoos -Technology Review http://www.technologyreview.com/computing/38296/?p1=A1[8/14/2011 6:01:33 AM

    E-Print Network [OSTI]

    Rogers, John A.

    Stick-On Electronic Tattoos - Technology Review http://www.technologyreview.com/computing/38296/?p1. Sponsored Content TECHNOLOGIES FROM NATIONAL INSTRUMENTS Introduction to LabVIEW with myDAQ: Digital Inputs BIOMEDICINE BUSINESS MAGAZINE BLOGS VIDEO English en Español auf Deutsch in Italiano in India search #12

  9. Keeping Pace with Big Data Arizona State University Data Mining and Machine Learning Lab NSF Workshop on Big Data Analy6cs, Beijing 1

    E-Print Network [OSTI]

    Liu, Huan

    Keeping Pace with Big Data Arizona State University Data Mining and Machine Learning Lab NSF Workshop on Big Data Analy6cs, Beijing 1 Keeping Pace with Big Data - A Data Mining Perspec>ve Huan Liu Data

  10. Big Canyon Creek Ecological Restoration Strategy.

    SciTech Connect (OSTI)

    Rasmussen, Lynn; Richardson, Shannon

    2007-10-01

    He-yey, Nez Perce for steelhead or rainbow trout (Oncorhynchus mykiss), are a culturally and ecologically significant resource within the Big Canyon Creek watershed; they are also part of the federally listed Snake River Basin Steelhead DPS. The majority of the Big Canyon Creek drainage is considered critical habitat for that DPS as well as for the federally listed Snake River fall chinook (Oncorhynchus tshawytscha) ESU. The Nez Perce Soil and Water Conservation District (District) and the Nez Perce Tribe Department of Fisheries Resources Management-Watershed (Tribe), in an effort to support the continued existence of these and other aquatic species, have developed this document to direct funding toward priority restoration projects in priority areas for the Big Canyon Creek watershed. In order to achieve this, the District and the Tribe: (1) Developed a working group and technical team composed of managers from a variety of stakeholders within the basin; (2) Established geographically distinct sub-watershed areas called Assessment Units (AUs); (3) Created a prioritization framework for the AUs and prioritized them; and (4) Developed treatment strategies to utilize within the prioritized AUs. Assessment Units were delineated by significant shifts in sampled juvenile O. mykiss (steelhead/rainbow trout) densities, which were found to fall at fish passage barriers. The prioritization framework considered four aspects critical to determining the relative importance of performing restoration in a certain area: density of critical fish species, physical condition of the AU, water quantity, and water quality. It was established, through vigorous data analysis within these four areas, that the geographic priority areas for restoration within the Big Canyon Creek watershed are Big Canyon Creek from stream km 45.5 to the headwaters, Little Canyon from km 15 to 30, the mainstem corridors of Big Canyon (mouth to 7km) and Little Canyon (mouth to 7km). The District and the Tribe then used data collected from the District's stream assessment and inventory, utilizing the Stream Visual Assessment Protocol (SVAP), to determine treatment necessary to bring 90% of reaches ranked Poor or Fair through the SVAP up to good or excellent. In 10 year's time, all reaches that were previously evaluated with SVAP will be reevaluated to determine progress and to adapt methods for continued success. Over 400 miles of stream need treatment in order to meet identified restoration goals. Treatments include practices which result in riparian habitat improvements, nutrient reductions, channel condition improvements, fish habitat improvements, invasive species control, water withdrawal reductions, improved hydrologic alterations, upland sediment reductions, and passage barrier removal. The Nez Perce Soil and Water Conservation District (District) and the Nez Perce Tribe Department of Fisheries Resource Management Watershed Division (Tribe) developed this document to guide restoration activities within the Big Canyon Creek watershed for the period of 2008-2018. This plan was created to demonstrate the ongoing need and potential for anadromous fish habitat restoration within the watershed and to ensure continued implementation of restoration actions and activities. It was developed not only to guide the District and the Tribe, but also to encourage cooperation among all stakeholders, including landowners, government agencies, private organizations, tribal governments, and elected officials. Through sharing information, skills, and resources in an active, cooperative relationships, all concerned parties will have the opportunity to join together to strengthen and maintain a sustainable natural resource base for present and future generations within the watershed. The primary goal of the strategy is to address aquatic habitat restoration needs on a watershed level for resident and anadromous fish species, promoting quality habitat within a self-sustaining watershed. Seven objectives have been developed to support this goal: (1) Identify factors limiting quality

  11. Combinatorial Block Copolymer Ordering on Tunable Rough Substrates

    SciTech Connect (OSTI)

    Kulkarni, Manish M.; Yager, Kevin G.; Sharma, Ashutosh; Karim, Alamgir (IIT-India); (Akron); (BNL)

    2012-10-25

    Morphology control of block copolymer (BCP) thin films through substrate interaction via controlled roughness parameters is of significant interest for numerous high-tech applications ranging from solar cells to high-density storage media. While effects of substrate surface energy (SE) and roughness (R) on BCP morphology have been individually investigated, their synergistic effects have not been explored in any systematic manner. Interestingly, orientation response of BCP to changes in SE can be similar to what can be accomplished with variations in R. Here we present a novel approach for orienting lamellar BCP films of poly(styrene)-block-poly(methyl methacrylate) (PS-PMMA) on spin-coated xerogel (a dried gel of silica nanoparticle network) substrate with simultaneously tunable surface energy, {gamma}{sub s} {approx} 29-53 mJ/m{sup 2}, by UVO exposure and roughness, R{sub rms} {approx} 0.5-30 nm, by sol-gel processing steps of regulating the catalyst concentration and sol aging time. As in previous BCP orientation studies on 20 nm diameter monodisperse silica nanoparticle coated surface, we find a similar but broadened oscillatory BCP orientation behavior with film thickness due to the random rather than periodic rough surfaces. We also find that higher random roughness amplitude is not the necessary criteria for obtaining a vertical orientation of BCP lamellae. Rather, a high surface fractal dimension (D{sub f} > 2.4) of the rough substrate in conjunction with an optimal substrate surface energy {gamma}{sub s} {approx} 29 mJ/m{sup 2} results in 100% vertically oriented lamellar microdomains. The AFM measured film surface microstructure correlates well with the internal 3D BCP film structure probed by grazing incidence small-angle X-ray scattering (GISAXS) and rotational small-angle neutron scattering (SANS). In contrast to tunable self-assembled monolayer (SAM)-coated substrates, the xerogel films are very durable and retain their chemical properties over period of several months. These results also highlight importantly that BCP orientation control for nanotechnology is possible not only on specially prepared patterned substrates but also on industrially viable sol-gel substrates.

  12. Heat transfer between elastic solids with randomly rough surfaces

    E-Print Network [OSTI]

    B. N. J. Persson; B. Lorenz; A. I. Volokitin

    2009-08-27

    We study the heat transfer between elastic solids with randomly rough surfaces. We include both the heat transfer from the area of real contact, and the heat transfer between the surfaces in the noncontact regions. We apply a recently developed contact mechanics theory, which accounts for the hierarchical nature of the contact between solids with roughness on many different length scales. For elastic contact, at the highest (atomic) resolution the area of real contact typically consists of atomic (nanometer) sized regions, and we discuss the implications of this for the heat transfer. For solids with very smooth surfaces, as is typical in many modern engineering applications, the interfacial separation in the non-contact regions will be very small, and for this case we show the importance of the radiative heat transfer associated with the evanescent electromagnetic waves which exist outside of all bodies.

  13. Capillary adhesion between elastic solids with randomly rough surfaces

    E-Print Network [OSTI]

    B. N. J. Persson

    2008-05-06

    I study how the contact area and the work of adhesion, between two elastic solids with randomly rough surfaces, depend on the relative humidity. The surfaces are assumed to be hydrophilic, and capillary bridges form at the interface between the solids. For elastically hard solids with relative smooth surfaces, the area of real contact and therefore also the sliding friction, are maximal when there is just enough liquid to fill out the interfacial space between the solids, which typically occurs for $d_{\\rm K} \\approx 3 h_{\\rm rms}$, where $d_{\\rm K}$ is the height of the capillary bridge and $h_{\\rm rms}$ the root-mean-square roughness of the (combined) surface roughness profile. For elastically soft solids, the area of real contact is maximal for very low humidity (i.e., small $d_{\\rm K}$), where the capillary bridges are able to pull the solids into nearly complete contact. In both case, the work of adhesion is maximal (and equal to $2\\gamma {\\rm cos}\\theta$, where $\\gamma$ is the liquid surface tension and $\\theta$ the liquid-solid contact angle) when $d_{\\rm K} >> h_{\\rm rms}$, corresponding to high relative humidity.

  14. Big, Deep, and Smart Data in Energy Materials Research: Atomic...

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

    Big, Deep, and Smart Data in Energy Materials Research: Atomic View on Materials Functionalities Event Sponsor: Computing, Environment, and Life Sciences Seminar Start Date: Sep 22...

  15. Data, Feedback, & Awareness Lead to Big Energy Savings | Department...

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

    Data, Feedback, & Awareness Lead to Big Energy Savings Fact sheet describes how the Navy Region Southwest Metro San Diego Area (NRSMSD) regional energy management team achieved...

  16. Can Small Go Big? Microfluidics Aid Quest for Artificial Photosynthesi...

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

    Can Small Go Big? Microfluidics Aid Quest for Artificial Photosynthesis Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding...

  17. Big Thicket National Preserve: Trails to the Future 

    E-Print Network [OSTI]

    Anderson, Luke; Allen, Chris; Elrod, Leah; Forbes, Melissa; Harbin, Hannah; Stromm, Diann

    2003-01-01

    stream_source_info Big_Thicket.pdf.txt stream_content_type text/plain stream_size 292407 Content-Encoding ISO-8859-1 stream_name Big_Thicket.pdf.txt Content-Type text/plain; charset=ISO-8859-1 Capstone Project... The George Bush School of Government and Public Service Texas A&M University Big Thicket National Preserve: Trails to the Future By Luke Anderson Chris Allen Leah Elrod Melissa Forbes Hannah Harbin Diann Strom Big Thicket National Preserve...

  18. LDRD symposium focuses on materials in extremes, big data, and...

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

    LDRD symposium focuses on materials in extremes, big data, and energy use impacts | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission...

  19. The Big Picture on Process Heating | Department of Energy

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

    Big Picture on Process Heating (January 2001) More Documents & Publications Metal and Glass Manufacturers Reduce Costs by Increasing Energy Efficiency in Process Heating Systems...

  20. A different Big Bang theory: Los Alamos unveils explosives detection...

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

    unveils explosives detection expertise A different Big Bang theory: Los Alamos unveils explosives detection expertise A team of scientists is now rolling out a collaborative...

  1. Managing Research Data in Big Science

    E-Print Network [OSTI]

    Norman Gray; Tobia Carozzi; Graham Woan

    2012-07-17

    The project which led to this report was funded by JISC in 2010--2011 as part of its 'Managing Research Data' programme, to examine the way in which Big Science data is managed, and produce any recommendations which may be appropriate. Big science data is different: it comes in large volumes, and it is shared and exploited in ways which may differ from other disciplines. This project has explored these differences using as a case-study Gravitational Wave data generated by the LSC, and has produced recommendations intended to be useful variously to JISC, the funding council (STFC) and the LSC community. In Sect. 1 we define what we mean by 'big science', describe the overall data culture there, laying stress on how it necessarily or contingently differs from other disciplines. In Sect. 2 we discuss the benefits of a formal data-preservation strategy, and the cases for open data and for well-preserved data that follow from that. This leads to our recommendations that, in essence, funders should adopt rather light-touch prescriptions regarding data preservation planning: normal data management practice, in the areas under study, corresponds to notably good practice in most other areas, so that the only change we suggest is to make this planning more formal, which makes it more easily auditable, and more amenable to constructive criticism. In Sect. 3 we briefly discuss the LIGO data management plan, and pull together whatever information is available on the estimation of digital preservation costs. The report is informed, throughout, by the OAIS reference model for an open archive.

  2. Analytics over Large-Scale Multidimensional Data: The Big Data Revolution!

    E-Print Network [OSTI]

    Song, Il-Yeol

    Analytics over Large-Scale Multidimensional Data: The Big Data Revolution! Alfredo Cuzzocrea ICAR in the field of analytics over big data, and we extend the discussion to analytics over big multidimensional, Management, Performance, Theory Keywords Analytics over Big Data, Analytics over Big Multidimensional Data

  3. The Next Big Thing - Eric Haseltine

    ScienceCinema (OSTI)

    Eric Haseltine

    2010-01-08

    Eric Haseltine, Haseltine Partners president and former chief of Walt Disney Imagineering, presented "The Next Big Thing," on Sept. 11, at the ORNL. He described the four "early warning signs" that a scientific breakthrough is imminent, and then suggested practical ways to turn these insights into breakthrough innovations. Haseltine is former director of research at the National Security Agency and associate director for science and technology for the director of National Intelligence, former executive vice president of Walt Disney Imagineering and director of engineering for Hughes Aircraft. He has 15 patents in optics, special effects and electronic media, and more than 100 publications in science and technical journals, the web and Discover Magazine.

  4. Big Data | OpenEI Community

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC Jump to:Greece:BajoBelpower Srl JumpOpenRenewableBielat SantoreBig

  5. Protein Dynamics Hit the Big Screen

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptionsProtein Dynamics Hit the Big Screen Protein Dynamics Hit

  6. Big Blue Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher HomesBeverly,Lake, California:Big

  7. The Big Data Rush Practically every major funding agency is kindling (or rekindling) the idea of`big data'as key to solving

    E-Print Network [OSTI]

    Crawford, T. Daniel

    The Big Data Rush Practically every major funding agency is kindling (or rekindling) the idea of`big.TheWhite House has recently launched a major initiative in this space (Google for"Big Data Across the Federal Government") highlighting the pervasiveness of big data programs across multiple government units. The

  8. Purdue University Faculty Openings in Big Data Purdue University has identified Big Data as a major thrust for inter-disciplinary research and education.

    E-Print Network [OSTI]

    Kihara, Daisuke

    Purdue University Faculty Openings in Big Data Purdue University has identified Big Data as a major shape Purdue's vision and research/education agenda in Big Data. Candidates for tenure and tenure, and participate in interdisciplinary Big-Data activities. Salary and benefits are highly competitive, and Purdue

  9. 6 Scalable End-user Access to Big Data 1 6.1 The Data Access Problem of Big Data . . . . . . . . . . . . . . . . . . . . . 2

    E-Print Network [OSTI]

    Calvanese, Diego

    Contents 6 Scalable End-user Access to Big Data 1 6.1 The Data Access Problem of Big Data;Chapter 6 Scalable End-user Access to Big Data Martin Giese,1 Diego Calvanese,2 Peter Haase,3 Ian Horrocks-users typically face when dealing with Big Data: · They need to pose ad hoc queries to a collection of data

  10. Big SaaS: The Next Step Beyond Big Data Hong Zhu, Ian Bayley, M. Younas, David Lightfoot, Basel Yousef and Dongmei Liu

    E-Print Network [OSTI]

    Zhu, Hong

    Big SaaS: The Next Step Beyond Big Data Hong Zhu, Ian Bayley, M. Younas, David Lightfoot, Basel will integrate with the Internet of Things, Mobile Computing, Big Data, Wireless Sensor Networks, and many other and require Big Data but provide great value to the customer. With these benefits come great societal risks

  11. Review: Eco-Business: A Big-Brand Takeover of Sustainability

    E-Print Network [OSTI]

    Laberge, Yves

    2015-01-01

    Big-Brand Takeover of Sustainability By Peter Dauvergne andA Big-Brand Takeover of Sustainability. Cambridge, MA: MITA Big-Brand Takeover of Sustainability is a very important

  12. Bid & Open Data position paper 1 / 47 Big and Open data

    E-Print Network [OSTI]

    Morik, Katharina

    Bid & Open Data position paper 1 / 47 Big and Open data Position Paper #12;Bid & Open Data position ..................................................................................................................5 II- Challenges with BIG/OPEN DATA ..............................................................................6 III- Technical approaches to Big Data

  13. Effects of hydraulic roughness on surface textures of gravel-bed rivers

    E-Print Network [OSTI]

    Montgomery, David R.

    Effects of hydraulic roughness on surface textures of gravel-bed rivers John M. Buffington1 that bed-surface grain size is responsive to hydraulic roughness caused by bank irregularities, bars condition of low hydraulic roughness. For a given 0bf , channels with progressively greater hydraulic

  14. Independent External Peer Review Report Rough River Dam 18 August 2011 ii

    E-Print Network [OSTI]

    US Army Corps of Engineers

    #12;Independent External Peer Review Report ­ Rough River Dam 18 August 2011 ii This page intentionally blank. #12;Independent External Peer Review Report ­ Rough River Dam 18 August 2011 iii Table Panel Members B-1 Appendix C ­ Charge for IEPR Panel C-1 List of Figures Figure 1. Rough River Dam 4

  15. Recommendations for Technologies for Microgrids on the Big Island

    E-Print Network [OSTI]

    Recommendations for Technologies for Microgrids on the Big Island Prepared for U.S. Department Island microgrids By Sentech, Inc. Bethesda, Maryland And University of Hawaii Hawaii Natural Energy for technologies to be used in future installation of Big Island microgrids Subtask 2.2 Deliverable #4 Prepared By

  16. SCIENCE IN HIGH DIMENSIONS: MULTIPARAMETER MODELS AND BIG DATA

    E-Print Network [OSTI]

    Sethna, James P.

    SCIENCE IN HIGH DIMENSIONS: MULTIPARAMETER MODELS AND BIG DATA A Dissertation Presented #12;SCIENCE IN HIGH DIMENSIONS: MULTIPARAMETER MODELS AND BIG DATA Ricky Chachra, Ph.D. Cornell parameters as well as a large-dimensional space of predicted data. These high-dimensional spaces of inputs

  17. "Developing the infrastructure and skills needed to handle big data."

    E-Print Network [OSTI]

    Zhigilei, Leonid V.

    "Developing the infrastructure and skills needed to handle big data." Don Brown W.S. Calcott Engineering University of Virginia Charlottesville, VA 434.982.2074 Big Data Research Group Our research group and uncertain behaviors. Methodological interests in these areas include data- mining, simulation

  18. Economic Impact of New Residents in Big Stone,

    E-Print Network [OSTI]

    Minnesota, University of

    Economic Impact of New Residents in Big Stone, Chippewa, Lac Qui Parle, Swift, and Yellow of Minnesota Extension Center for Community Vitality August 2011 1 ECONOMIC IMPACT ANALYSIS An Extension Community Economics Program #12; Economic Impact of New Residents: Big Stone, Chippewa, Lac Qui

  19. Synoptic Observing Programs at Big Bear Solar Observatory

    E-Print Network [OSTI]

    Synoptic Observing Programs at Big Bear Solar Observatory Haimin Wang and Philip R. Goode Big Bear and en- hance the comprehensive synoptic observing programs at BBSO, which include the following ve studies. Statistical studies on sunspot areas and magnetic shear are among the highlights of this research

  20. Rethinking Abstractions for Big Data: Why, Where, How, and What

    E-Print Network [OSTI]

    ) and applications communities. However, scale is only one aspect of current big data trends; fundamentally, current that is being addressed. The "big data challenge" has disrupted computer science by stressing to the very limits heterogeneous and specialized units, with resilience and energy becoming important considerations. The design

  1. Scaling laws governing the roughness of the swash edge line

    E-Print Network [OSTI]

    Ed. Bormashenko; A. Musin; R. Grynuov

    2014-02-23

    The physics of swash i.e. a layer of water that washes up on the beach after an incoming wave has broken is complicated and intriguing. It includes perplexed hydrodynamic and sediment transport events. In our paper we address to the roughness of the moving swash boundary at which a beach, water and air meet. We treat the behavior of this boundary as an interfacial phenomenon, without going into details of formation of edge waves and beach cusps, covered broadly in literature. This "crude" approach turns out to be productive and revealing the resemblance of the swash line with a broad diversity of effects arising from the random pinning of moving boundaries.

  2. Scaling laws governing the roughness of the swash edge line

    E-Print Network [OSTI]

    Bormashenko, Ed; Grynuov, R

    2014-01-01

    The physics of swash i.e. a layer of water that washes up on the beach after an incoming wave has broken is complicated and intriguing. It includes perplexed hydrodynamic and sediment transport events. In our paper we address to the roughness of the moving swash boundary at which a beach, water and air meet. We treat the behavior of this boundary as an interfacial phenomenon, without going into details of formation of edge waves and beach cusps, covered broadly in literature. This "crude" approach turns out to be productive and revealing the resemblance of the swash line with a broad diversity of effects arising from the random pinning of moving boundaries.

  3. File:Wind rough example.pdf | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdistoWhiskey flats 100k.pdf Jump to: navigation, searchWind rough

  4. Astrogenomics: big data, old problems, old solutions?

    E-Print Network [OSTI]

    Golden, Aaron; Greally, John M

    2013-01-01

    The ominous warnings of a `data deluge' in the life sciences from high-throughput DNA sequencing data are being supplanted by a second deluge, of cliches bemoaning our collective scientific fate unless we address the genomic data `tsunami'. It is imperative that we explore the many facets of the genome, not just sequence but also transcriptional and epigenetic variability, integrating these observations in order to attain a genuine understanding of how genes function, towards a goal of genomics-based personalized medicine. Determining any individual's genomic properties requires comparison to many others, sifting out the specific from the trends, requiring access to the many in order to yield information relevant to the few. This is the central big data challenge in genomics that still requires some sort of resolution. Is there a practical, feasible way of directly connecting the scientific community to this data universe? The best answer could be in the stars overhead.

  5. New Nuclear Physics for Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Richard N. Boyd; Carl R. Brune; George M. Fuller; Christel J. Smith

    2010-08-04

    We discuss nuclear reactions which could play a role in Big Bang Nucleosynthesis (BBN). Most of these reactions involve lithium and beryllium isotopes and the rates for some of these have not previously been included in BBN calculations. Few of these reactions are well studied in the laboratory. We also discuss novel effects in these reactions, including thermal population of nuclear target states, resonant enhancement, and non-thermal neutron reaction products. We perform sensitivity studies which show that even given considerable nuclear physics uncertainties, most of these nuclear reactions have minimal leverage on the standard BBN abundance yields of 6Li and 7Li. Although a few have the potential to alter the yields significantly, we argue that this is unlikely.

  6. DMP Planning for Big Science Projects

    E-Print Network [OSTI]

    Juan Bicarregui; Norman Gray; Rob Henderson; Roger Jones; Simon Lambert; Brian Matthews

    2012-08-18

    This report exists to provide high-level guidance for the strategic and engineering development of Data Management and Preservation plans for 'Big Science' data. Although the report's nominal audience is therefore rather narrow, we intend the document to be of use to other planners and data architects who wish to implement good practice in this area. For the purposes of this report, we presume that the reader is broadly persuaded (by external fiat if nothing else) of the need to preserve research data appropriately, and that they have both sophisticated technical support and the budget to support developments. The goal of the document is not to provide mechanically applicable recipes, but to allow the user to develop and lead a high-level plan which is appropriate to their organisation. Throughout, the report is informed where appropriate by the OAIS reference model.

  7. Semiclassical Theory of Integrable and Rough Andreev Billiards

    E-Print Network [OSTI]

    W. Ihra; M. Leadbeater; J. L. Vega; K. Richter

    1999-09-08

    We study the effect on the density of states in mesoscopic ballistic billiards to which a superconducting lead is attached. The expression for the density of states is derived in the semiclassical S-matrix formalism shedding insight into the origin of the differences between the semiclassical theory and the corresponding result derived from random matrix models. Applications to a square billiard geometry and billiards with boundary roughness are discussed. The saturation of the quasiparticle excitation spectrum is related to the classical dynamics of the billiard. The influence of weak magnetic fields on the proximity effect in rough Andreev billiards is discussed and an analytical formula is derived. The semiclassical theory provides an interpretation for the suppression of the proximity effect in the presence of magnetic fields as a coherence effect of time reversed trajectories, similar to the weak localisation correction of the magneto-resistance in chaotic mesoscopic systems. The semiclassical theory is shown to be in good agreement with quantum mechanical calculations.

  8. Local contact stress measurements at a rough interface

    E-Print Network [OSTI]

    J. Scheibert; A. Prevost; J. Frelat; P. Rey; G. Debrégeas

    2007-11-07

    An original MEMS-based force sensing device is designed which allows to measure spatially resolved normal and tangential stress fields at the base of an elastomeric film. This device is used for the study of the contact stress between a rough film and a smooth glass sphere under normal load. The measured profiles are compared to Finite Elements Method calculations for a smooth contact with boundary conditions obeying Amontons-Coulomb's friction law. The accuracy of the measurements allows to discriminate between dry and lubricated contact conditions and to evidence load-dependent deviations from Amontons-Coulomb's profiles. These deviations are qualitatively interpreted by taking into account the finite compliance of the micro-contact population.

  9. A rough analytic relation on partial differential equations

    E-Print Network [OSTI]

    Kato, Tsuyoshi

    2010-01-01

    We introduce some analytic relations on the set of partial differential equations of two variables. It relies on a new comparison method to give rough asymptotic estimates for solutions which obey different partial differential equations. It uses a kind of scale transform called tropical geometry which connects automata with real rational dynamics. Two different solutions can be considered when their defining equations are transformed to the same automata at infinity. We have a systematic way to construct related pairs of different partial differential equations, and also construct some unrelated pairs concretely. These verify that the new relations are non trivial. We also make numerical calculations and compare the results for both related and unrelated pairs of PDEs.

  10. Big Earth observation data analytics for land use and land cover change information

    E-Print Network [OSTI]

    Camara, Gilberto

    .......................................................................................... 3 2.2 CONTRIBUTION TO COMPUTER SCIENCE: BIG DATA IN GEOINFORMATICS

  11. Machine-Learning for Big Data: Sampling and Distributed On-Line Algorithms

    E-Print Network [OSTI]

    Combettes, Patrick Louis

    Machine-Learning for Big Data: Sampling and Distributed On-Line Algorithms Stéphan Clémençon LTCI variance control: rate faster than n 1/2 3 Convex risk minimization 4 Oracle inequalities #12;Big Data? Big phones, internet, embedded systems, social networks, . . .) · to store and manage Big (and Complex) Data

  12. IEEE Signal Processing Magazine, Special Issue: Big Data 1 Breaking the Curse of Dimensionality using

    E-Print Network [OSTI]

    IEEE Signal Processing Magazine, Special Issue: Big Data 1 Breaking the Curse of Dimensionality will discuss two promising tools to alleviate this curse when handling big data. First, instead of using full, Special Issue: Big Data 2 paper we show how to use this expertise to manage otherwise unmanageable big

  13. November2012 IU Bloomington Pascal Hitzler Semantic Web and Big Data

    E-Print Network [OSTI]

    Hitzler, Pascal

    November2012 ­ IU Bloomington ­ Pascal Hitzler Semantic Web and Big Data ­ Opportunities://www.pascal-hitzler.de/ #12;November2012 ­ IU Bloomington ­ Pascal Hitzler 2 Contents · Big Data, Linked Data, Semantic Web · The Big Data Added Value Pipeline · Fragments #12;November2012 ­ IU Bloomington ­ Pascal Hitzler 3 Big

  14. Big Data is Not About the Data! Institute for Quantitative Social Science

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Big Data is Not About the Data! Gary King1 Institute for Quantitative Social Science Harvard Value in Big Data: the Analytics 2/10 #12;The Value in Big Data: the Analytics · Data: 2/10 #12;The Value in Big Data: the Analytics · Data: · easy to come by; often a free byproduct of IT improvements 2

  15. Efficient and Customizable Data Partitioning Framework for Distributed Big RDF Data Processing in the Cloud

    E-Print Network [OSTI]

    Liu, Ling

    Efficient and Customizable Data Partitioning Framework for Distributed Big RDF Data Processing}@gatech.edu Abstract--Big data business can leverage and benefit from the Clouds, the most optimized in processing big data in the Clouds is how to effectively partition the big data to ensure efficient

  16. Closing the Loop on Big Data Rob Nowak www.ece.wisc.edu/~nowak

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    Closing the Loop on Big Data data Rob Nowak www.ece.wisc.edu/~nowak NSF Big Data Workshop March 21, 2013 #12;model space questions /queries "training data" BIG DATA: A Marriage of Machine and Man Human Judgements labeling, annotation, comparisons #12;model space questions /queries "training data" BIG DATA

  17. Big and Small Ideas: How to Lower Solar Financing Costs

    Broader source: Energy.gov [DOE]

    DOE hosted the "Big & Small Ideas: How to Lower Solar Financing Costs" breakout session during the SunShot Grand Challenge Summit and Technology Forum. This session explored a range of...

  18. The seasonality of aerosol properties in Big Bend National Park 

    E-Print Network [OSTI]

    Allen, Christopher Lee

    2007-04-25

    ), to characterize the seasonal variability of the Big Bend regions aerosol optical properties. Mass extinction efficiencies and relative humidity scattering enhancement factors were calculated for both externally and internally mixed aerosol populations for all size...

  19. Eliot Feibush leads new Princeton consortium to visualize Big...

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

    Eliot Feibush leads new Princeton consortium to visualize Big Data By John Greenwald April 22, 2015 Tweet Widget Google Plus One Share on Facebook Eliot Feibush (Photo by Elle...

  20. Scalable multi-access flash store for Big Data analytics

    E-Print Network [OSTI]

    Jun, Sang-Woo

    2014-01-01

    For many "Big Data" applications, the limiting factor in performance is often the transportation of large amount of data from hard disks to where it can be processed, i.e. DRAM. In this work we examine an architecture for ...

  1. EIS-0377: Big Stone II Power Plant and Transmission Project

    Broader source: Energy.gov [DOE]

    A systems study was carried out to identify the most appropriate locations to interconnect the proposed Big Stone II power plant to the regional utility grid. The study also identified transmission...

  2. Thoughts About Really Big Computers | Argonne Leadership Computing...

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

    Thoughts About Really Big Computers Event Sponsor: Leadership Facility Seminar Start Date: Jun 30 2015 - 10:30am BuildingRoom: Building 240Room 1407 Location: Argonne National...

  3. Taking Battery Technology from the Lab to the Big City

    Broader source: Energy.gov [DOE]

    A small New York City startup is hoping it has the next big solution in energy storage. A video documents what the company's breakthrough means for the future of grid-scale energy storage.

  4. LiBeB and Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Keith A. Olive; Brian D. Fields

    1999-02-20

    The dual origin of population II Li7, in both big bang nucleosynthesis and galactic cosmic-ray nucleosynthesis is discussed. It is argued that with additional Li6 data, stringent limits on the degree of Li7 depletion can be obtained. Li7 depletion is also constrained by the concordance of big bang predictions with observational determinations of light element abundances. Stringent limits can also be obtained for a fixed primordial D/H abundance.

  5. Big Bang or Big Bounce? Professor Paul J. Steinhardt Princeton University

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11DESERTWaterSharingBeyondBang or Big

  6. Thermodynamics of sustaining gases in the roughness of submerged superhydrophobic surfaces

    E-Print Network [OSTI]

    Neelesh A. Patankar

    2015-05-22

    Rough surfaces submerged in a liquid can remain almost dry if the liquid does not fully wet the roughness and gases are sustained in roughness grooves. Such partially dry surfaces can help reduce drag or enhance boiling. Gases sustained in roughness grooves would be composed of air and the vapor phase of the liquid itself. The thermodynamics of sustaining vapor was considered in a prior work [Patankar, Soft Matter, 2010, 6:1613]. Here, the thermodynamics of sustaining gases (e.g. air) is considered. Governing equations are presented along with a solution methodology to determine a critical condition to sustain gases. The critical roughness scale to sustain gases is estimated for different degrees of saturation of gases dissolved in the liquid. It is shown that roughness spacings of less than a micron are essential to sustain gases on surfaces submerged in water at atmospheric pressure. This is consistent with prior empirical data.

  7. Surface Roughness of Stainless Steel Bender Mirrors for Focusing Soft X-rays

    E-Print Network [OSTI]

    2005-01-01

    Surface Roughness of Stainless Steel Bender Mirrors forWe have used polished stainless steel as a mirror substratefor smooth polishing. Stainless steel is stronger and can be

  8. Does Big Oil Collude and Price Gouge? Big Oil came back into the headlines in recent weeks with another spike in gasoline

    E-Print Network [OSTI]

    Ahmad, Sajjad

    with another spike in gasoline prices and their reported record profits. Some months ago, during the last gasoline price spike, Congress summoned the executives of the Big Oil companies to testify aboutDoes Big Oil Collude and Price Gouge? Big Oil came back into the headlines in recent weeks

  9. 1 Big Data and User Valuation: a Synergistic Combination Big data analytics is the problem of bringing the massive amounts of data produced today down to human

    E-Print Network [OSTI]

    1 Big Data and User Valuation: a Synergistic Combination Big data analytics is the problem will require fundamental advances in big data analytics. arXiv Topic Models User Models Predicted Preferences of bringing the massive amounts of data produced today down to human scale. This problem is faced

  10. Flow rule of dense granular flows down a rough incline

    E-Print Network [OSTI]

    Tamas Borzsonyi; Robert E. Ecke

    2007-07-09

    We present experimental findings on the flow rule for granular flows on a rough inclined plane using various materials including sand and glass beads of various sizes and four types of copper particles with different shapes. We characterize the materials by measuring $h_s$ (the thickness at which the flow subsides) as a function of the plane inclination $\\theta$ on various surfaces. Measuring the surface velocity $u$ of the flow as a function of flow thickness $h$, we find that for sand and glass beads the Pouliquen flow rule $u/\\sqrt{gh} \\sim \\beta h/h_s$ provides reasonable but not perfect collapse of the $u(h)$ curves measured for various $\\theta$ and mean particle diameter $d$. Improved collapse is obtained for sand and glass beads by using a recently proposed scaling of the form $u/\\sqrt{gh} =\\beta \\cdot h \\tan^2\\theta /h_s\\ \\tan^2\\theta_1$ where $\\theta_1$ is the angle at which the $h_s(\\theta)$ curves diverge. Measuring the slope $\\beta$ for ten different sizes of sand and glass beads, we find a systematic, strong increase of $\\beta$ with the divergence angle $\\theta_1$ of $h_s$. The copper materials with different shapes are not well described by either flow rule with $u \\sim h^{3/2}$.

  11. Lyapunov instability of rough hard-disk fluids

    E-Print Network [OSTI]

    Jacobus A. van Meel; Harald A. Posch

    2009-04-02

    The dynamical instability of rough hard-disk fluids in two dimensions is characterized through the Lyapunov spectrum and the Kolmogorov-Sinai entropy, $h_{KS}$, for a wide range of densities and moments of inertia $I$. For small $I$ the spectrum separates into translation-dominated and rotation-dominated parts. With increasing $I$ the rotation-dominated part is gradually filled in at the expense of translation, until such a separation becomes meaningless. At any density, the rate of phase-space mixing, given by $h_{KS}$, becomes less and less effective the more the rotation affects the dynamics. However, the degree of dynamical chaos, measured by the maximum Lyapunov exponent, is only enhanced by the rotational degrees of freedom for high-density gases, but is diminished for lower densities. Surprisingly, no traces of Lyapunov modes were found in the spectrum for larger moments of inertia. The spatial localization of the perturbation vector associated with the maximum exponent however persists for any $I$.

  12. Rethinking Abstractions for Big Data: Why, Where, How, and What

    E-Print Network [OSTI]

    Mary Hall; Robert M. Kirby; Feifei Li; Miriah Meyer; Valerio Pascucci; Jeff M. Phillips; Rob Ricci; Jacobus Van der Merwe; Suresh Venkatasubramanian

    2013-06-14

    Big data refers to large and complex data sets that, under existing approaches, exceed the capacity and capability of current compute platforms, systems software, analytical tools and human understanding. Numerous lessons on the scalability of big data can already be found in asymptotic analysis of algorithms and from the high-performance computing (HPC) and applications communities. However, scale is only one aspect of current big data trends; fundamentally, current and emerging problems in big data are a result of unprecedented complexity--in the structure of the data and how to analyze it, in dealing with unreliability and redundancy, in addressing the human factors of comprehending complex data sets, in formulating meaningful analyses, and in managing the dense, power-hungry data centers that house big data. The computer science solution to complexity is finding the right abstractions, those that hide as much triviality as possible while revealing the essence of the problem that is being addressed. The "big data challenge" has disrupted computer science by stressing to the very limits the familiar abstractions which define the relevant subfields in data analysis, data management and the underlying parallel systems. As a result, not enough of these challenges are revealed by isolating abstractions in a traditional software stack or standard algorithmic and analytical techniques, and attempts to address complexity either oversimplify or require low-level management of details. The authors believe that the abstractions for big data need to be rethought, and this reorganization needs to evolve and be sustained through continued cross-disciplinary collaboration.

  13. Surface roughness and geological mapping at sub-hectometer scale from the High

    E-Print Network [OSTI]

    Cord, Aurélien

    and characterized in terms of roughness. Key words: Geological Processes, Impact Processes, Image Processing, Mars valuable insights into the characterization of and discrimination between these geological processesSurface roughness and geological mapping at sub-hectometer scale from the High Resolution Stereo

  14. Evolution of swelling pressure of cohesive-frictional, rough and elasto-plastic granulates

    E-Print Network [OSTI]

    Luding, Stefan

    with cohesive-frictional, rough and elasto-plastic "mi- croscopic" contact properties. The spherical particlesEvolution of swelling pressure of cohesive- frictional, rough and elasto-plastic granulates Stefan as function of pressure for different micro- scopic contact properties. Keywords: granular materials, discrete

  15. Computation of the drag force on a rough sphere close to a wall

    E-Print Network [OSTI]

    Gérard-Varet, David

    2011-01-01

    We consider the effect of surface roughness on solid-solid contact in a Stokes flow. Various models for the roughness are considered, and a unified methodology is given to derive the corresponding asymptotics of the drag force. In this way, we recover and clarify the various expressions that can be found in the litterature.

  16. American Institute of Aeronautics and Astronautics Effects of Surface Roughness on Laminar Separation Bubble over a

    E-Print Network [OSTI]

    Wang, Zhi Jian "ZJ"

    1 American Institute of Aeronautics and Astronautics Effects of Surface Roughness on Laminar Engineering and CFD Center, Iowa State University, Ames, IA 50011 Laminar separation bubbles (LSBs) are often of surface roughness on laminar separation and turbulent transition can provide insights into the design

  17. A FETCH DEPENDENT MODEL OF SEA SURFACE ROUGHNESS FOR OFFSHORE WIND POWER UTILISATION

    E-Print Network [OSTI]

    Heinemann, Detlev

    A FETCH DEPENDENT MODEL OF SEA SURFACE ROUGHNESS FOR OFFSHORE WIND POWER UTILISATION Bernhard Lange, Resources, Roughness, Coastal Sea Areas, Waves, Rødsand 1 INTRODUCTION Large offshore wind farms are being wind conditions of offshore sites, since the higher energy yield has to compensate the additional

  18. Roughness Tolerance Studies for the Undulator Beam Pipe Chamber of LCLS-II

    E-Print Network [OSTI]

    Bane, K

    2014-01-01

    We investigate the effect of wall roughness on the wakefield-induced energy variation in the undulator beam pipe of LCLS-II. We find that a wall roughness equivalent to an rms surface slope of 30 mr increases the total induced energy variation within the bunch (due to the resistive wall wake) by a modest 20%.

  19. Internal wave generation from rough topography D. A. Aguilar and B. R. Sutherlanda

    E-Print Network [OSTI]

    Sutherland, Bruce

    Internal wave generation from rough topography D. A. Aguilar and B. R. Sutherlanda Department examine internal wave generation above and in the lee of finite-amplitude periodic topography having various degrees of roughness. We show that internal waves are generated not only by flow over the hills

  20. High-order solutions of three-dimensional rough-surface scattering problems at high frequencies.

    E-Print Network [OSTI]

    Turc, Catalin

    High-order solutions of three-dimensional rough-surface scattering problems at high frequencies. I-order numerical method for the solution of high- frequency scattering problems from rough surfaces in three dimensions. The method is based on the asymptotic solution of appropriate integral equations in the high-frequency

  1. Lyapunov instability of rough hard-disk fluids Jacobus A. van Meel*

    E-Print Network [OSTI]

    Posch, Harald A.

    Lyapunov instability of rough hard-disk fluids Jacobus A. van Meel* FOM Institute for Atomic The dynamical instability of rough hard-disk fluids in two dimensions is characterized through the Lyapunov, measured by the maximum Lyapunov exponent, is only enhanced by the rotational degrees of freedom for high

  2. Rough Algebras and Automated Deduction Anita Wasilewska 1 and Laurent Vigneron 2

    E-Print Network [OSTI]

    Rusinowitch, Michaël

    of Boole himself led to the notion which we now call Boolean algebra, but one of the turning pointsRough Algebras and Automated Deduction Anita Wasilewska 1 and Laurent Vigneron 2 1 Department algebras investigated here are particular cases of topological rough algebras introduced in [26]. We

  3. Engineering Gaussian disorder at rough interfaces for light trapping in thin-film solar cells

    E-Print Network [OSTI]

    Engineering Gaussian disorder at rough interfaces for light trapping in thin-film solar cells Piotr A theoretical study of randomly rough interfaces to obtain light trapping in thin-film silicon solar cells of thin-film solar cells. © 2012 Optical Society of America OCIS codes: 040.5350, 050.1950. Reducing

  4. Think-Pair-Share : developing comprehension and the classroom community using higher- level thinking in ASL and English

    E-Print Network [OSTI]

    Gordon, Sarah Elisabeth; Gordon, Sarah Elisabeth

    2012-01-01

    all students? names on a popsicle stick and have studentsthe big T-P-S cards ? popsicle sticks with each student?seach pair, but using the popsicle sticks to call on a few.

  5. An approximate model for the adhesive contact of rough viscoelastic surfaces

    E-Print Network [OSTI]

    Guillaume Haiat; Etienne Barthel

    2007-09-05

    Surface roughness is known to easily suppress the adhesion of elastic surfaces. Here a simple model for the contact of \\emph{viscoelastic} rough surfaces with significant levels of adhesion is presented. This approach is derived from our previous model [E. Barthel and G. Haiat {\\em Langmuir}, 18 9362 2002] for the adhesive contact of viscoelastic spheres. For simplicity a simple loading/unloading history (infinitely fast loading and constant pull-out velocity) is assumed. The model provides approximate analytical expressions for the asperity response and exhibits the full viscoelastic adhesive contact phenomenology such as stress relaxation inside the contact zone and creep at the contact edges. Combining this model with a Greenwood-Williamson statistical modeling of rough surfaces, we propose a quantitative assessment of the adhesion to rough viscoelastic surfaces. We show that moderate viscoelasticity efficiently restores adhesion on rough surfaces over a wide dynamic range.

  6. Near-field heat transfer between a nanoparticle and a rough surface

    E-Print Network [OSTI]

    Svend-Age Biehs; Jean-Jacques Greffet

    2011-03-11

    In this work we focus on the surface roughness correction to the near-field radiative heat transfer between a nanoparticle and a material with a rough surface utilizing a direct perturbation theory up to second order in the surface profile. We discuss the different distance regimes for the local density of states above the rough material and the heat flux analytically and numerically. We show that the heat transfer rate is larger than that corresponding to a flat surface at short distances. At larger distances it can become smaller due to surface polariton scattering by the rough surface. For distances much smaller than the correlation length of the surface profile, we show that the results converge to a proximity approximation, whereas in the opposite limit the rough surface can be replaced by an equivalent surface layer.

  7. 2013 strategic petroleum reserve big hill well integrity grading report.

    SciTech Connect (OSTI)

    Lord, David L.; Roberts, Barry L.; Lord, Anna C. Snider; Bettin, Giorgia; Sobolik, Steven Ronald; Park, Byoung Yoon; Rudeen, David Keith; Eldredge, Lisa; Wynn, Karen; Checkai, Dean; Perry, James Thomas

    2014-02-01

    This report summarizes the work performed in developing a framework for the prioritization of cavern access wells for remediation and monitoring at the Big Hill Strategic Petroleum Reserve site. This framework was then applied to all 28 wells at the Big Hill site with each well receiving a grade for remediation and monitoring. Numerous factors affecting well integrity were incorporated into the grading framework including casing survey results, cavern pressure history, results from geomechanical simulations, and site geologic factors. The framework was developed in a way as to be applicable to all four of the Strategic Petroleum Reserve sites.

  8. Quantum particle production near the big rip revisited

    E-Print Network [OSTI]

    F. G. Alvarenga; A. B. Batista; J. C. Fabris; M. J. S. Houndjo

    2009-04-06

    The effect of quantum particle production near the big rip singularity has been investigated previously, with the conclusion that the energy of the produced particle decreases as the future singularity is approached. Hence, the effect of particle production would not be effective to avoid the big rip singularity. That calculation was performed by introducing an ultra-violet cut-off. In the present work we consider a renormalization of the energy-momentum tensor, obtainning a different expression for the particle production. The new expression seems to indicate that the effect of particle production may be dominant as the singularity is approached.

  9. Dirac Fields in Loop Quantum Gravity and Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Martin Bojowald; Rupam Das; Robert J. Scherrer

    2008-03-19

    Big Bang nucleosynthesis requires a fine balance between equations of state for photons and relativistic fermions. Several corrections to equation of state parameters arise from classical and quantum physics, which are derived here from a canonical perspective. In particular, loop quantum gravity allows one to compute quantum gravity corrections for Maxwell and Dirac fields. Although the classical actions are very different, quantum corrections to the equation of state are remarkably similar. To lowest order, these corrections take the form of an overall expansion-dependent multiplicative factor in the total density. We use these results, along with the predictions of Big Bang nucleosynthesis, to place bounds on these corrections.

  10. Big Creek Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher HomesBeverly,Lake, California:BigBig

  11. EECBG Success Story: Big Savings for Texas City with Energy Monitoring...

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

    Big Savings for Texas City with Energy Monitoring Sensors EECBG Success Story: Big Savings for Texas City with Energy Monitoring Sensors August 19, 2010 - 5:00pm Addthis With more...

  12. OpenMSI: A Science Gateway to Sort Through Bio-Imaging's Big...

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

    OpenMSI: A Science Gateway to Sort Through Bio-Imaging's Big Datasets OpenMSI: A Science Gateway to Sort Through Bio-Imaging's Big Datasets August 27, 2013 | Tags: Basic Energy...

  13. Big Bang Expansion A textbook example of how observations drive theory

    E-Print Network [OSTI]

    Korn, Andreas

    of structure seeds. The cosmic web will later form out of these sedes. #12;II. Observing the CMB Variations WMAP tot = 1 Dark matter: 23% Dark energy (): 73% #12;Big Bang: a self-consistent theory? Big Bang

  14. Small Changes Help Long Island Homeowner Save Big on Energy Costs...

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

    Small Changes Help Long Island Homeowner Save Big on Energy Costs Small Changes Help Long Island Homeowner Save Big on Energy Costs April 16, 2013 - 12:20pm Addthis Located near...

  15. Annual meeting of Big Sky Carbon Sequestration Partnership to be held Oct. 28, 29 | ...

    E-Print Network [OSTI]

    ... Annual meeting of Big Sky Carbon Sequestration Partnership to be held ... meeting of the Big Sky Carbon Sequestration Partnership to be held ... science policy and technology of carbon capture and storage (CCS). Panels ...

  16. The Digital Skin of Cities: Urban Theory and Research in the Age of the Sensored and Metered City, Ubiquitous Computing, and Big Data

    E-Print Network [OSTI]

    Rabari, Chirag

    2013-01-01

    2012, September 30). “Big data: Mind the gaps. ” The BostonQuestions for Big Data. Information, Communication &BigQuery – Real-time big data analytics in the cloud [

  17. AutoGrid - Turning Big Data Into Power with the Energy Data Platform and Apps

    SciTech Connect (OSTI)

    Narayan, Amit; Dresselhuys, Eric; Kulp, Yann; Buseman, Greg; Piette, Mary Ann; Tang, Andrew; Dailey, Karla; Knudsen, Chris

    2014-03-25

    AutoGrid personnel discuss how they are turning big data into power with the energy data platform and apps.

  18. Pre-big bang scenario and the WZW model

    E-Print Network [OSTI]

    Marcel Jacon

    2015-06-09

    Extensive studies of pre-big bang scenarios for Bianchi-I type universe have been made, at various approximation levels. Knowing the solution of the equations for the post-big bang universe, the symmetries of the equations (time reversal and scale dual transformations) allow the study of pre-big bang solutions. However, the proposed solutions are unable to explain the actually observed acceleration of the expantion of the universe.Calculating the $\\beta $ equations for the Non-Linear Sigma model, at the first loop approximation and imposing conformal invariance at this level, lead to equations of motion that simply state that the curvature must be nil, which in turn allows the utilization of groups to solve the $\\beta $ equations. This is what is done in the Weiss-Zumino-Witten (WZW) model. In this article, I will show that using the WZW model on $SU_2$, some of the difficulties encountered in the determination of the pre and post big-bang solutions are eliminated. Combining the general results obtained with the $\\Lambda $CDM parameters lead to realistic solutions for the evolution of the universe, giving an explanation to the actually observed acceleration of the expansion in terms ot the dilation field $\\phi $(t).

  19. Hydroliquefaction of Big Brown lignite in supercritical fluids 

    E-Print Network [OSTI]

    Chen, Hui

    1996-01-01

    Big Brown lignite was liquefied in a fixed bed tube reactor. Three solvents were used in the liquefaction studies, toluene, cyclohexane and methanol. Two co-solvents, tetralin and water were used with toluene. The effects of the solvents and co...

  20. People's Physics Book Ch 20-1 The Big Ideas

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    People's Physics Book Ch 20-1 The Big Ideas Einstein believed that the laws of physics do of physics. In other words, if you are on a moving train and drop a ball or if you are standing on a farm and drop a ball, the physics that describe the motion of that ball will be the same. Einstein realized

  1. SHADING CALCULATIONS FOR THE BIG DISH Jeff Cumpston1

    E-Print Network [OSTI]

    ], building the 'SG4' 500m2 Big Dish solar paraboloidal concentrator for solar-thermal to electric energy into an array of a specific shape with a pre-defined energy transport network was simulated for a site location of the energy transport network pipe length. Results shows that dish separations can be altered to reduce pipe

  2. The State of the Art in Supporting "Big Data"

    E-Print Network [OSTI]

    Oliva, Aude

    of investigation · Startups in this space · If there is any achilles heel in big data, this is it! #12;10 DBMS Security · Works well -- i.e. I have never heard of the DBMS screwing up in this area. #12;11 Encryption · Can be entrusted to the DBMS -- Appropriate when there are many clients sharing data -- Don't want

  3. Adventures in Transportation from a (Big) Data Perspective

    E-Print Network [OSTI]

    Bertini, Robert L.

    + Adventures in Transportation from a (Big) Data Perspective Kristin Tufte NEDB Day, Jan 30, 2015 Maseeh College of Engineering and Computer Science #12;+Portal... !Portland-Vancouver Transportation Data Archive ! Policy of Open Data ! Publicly-funded (Thanks to NSF, FHWA, Metro, RTC,TREC) ! Focus on open

  4. The Big Data Newsvendor: Practical Insights from Machine Learning Analysis

    E-Print Network [OSTI]

    Rudin, Cynthia

    2013-10-16

    We present a version of the newsvendor problem where one has n observations of p features as well as past demand. We consider both \\big data" (p=n = O(1)) as well as small data (p=n = o(1)). For small data, we provide a ...

  5. The Big Data Newsvendor: Practical Insights from Machine Learning

    E-Print Network [OSTI]

    Rudin, Cynthia

    2014-02-06

    We investigate the newsvendor problem when one has n observations of p features related to the demand as well as past demands. Both small data (p=n = o(1)) and big data (p=n = O(1)) are considered. For both cases, we propose ...

  6. "Machine learning for big data analytics in biomedicine"

    E-Print Network [OSTI]

    Zhigilei, Leonid V.

    "Machine learning for big data analytics in biomedicine" Yanjun (Jane) Qi Assistant Professor yq2h-learning techniques on important challenges in biomedicine, especially those dealing with enormous data sets. Taking on Data Mining (ICDM) · Y. Qi, et al,(2009) "Systematic prediction of human membrane receptor interactions

  7. People's Physics book Ch 2-1 The Big Idea

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    People's Physics book Ch 2-1 The Big Idea Energy is a measure of the amount of, or potential for, dynamical activity in something. The total amount of energy in the universe is always the same universe. A group of things (we'll use the word system) has a certain amount of energy. Energy can be added

  8. BIG BEAR SOLAR OBSERVATORY CENTER FOR SOLAR-TERRESTRIAL RESEARCH

    E-Print Network [OSTI]

    BIG BEAR SOLAR OBSERVATORY CENTER FOR SOLAR-TERRESTRIAL RESEARCH Faculty Position in Solar Physics, New Jersey Institute of Technology A tenure track faculty position in solar physics is available of NJIT's program in solar physics, visit http://solar.njit.edu. Applicants are required to have a Ph

  9. Small Buildings = Big Opportunity for Energy Savings (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-12-01

    Small buildings have a big impact on energy use. In the United States, 44.6 million small buildings consume 44% of the overall energy used in buildings, presenting an enormous opportunity to cut costs, energy use, and greenhouse gas emissions.

  10. Big Bayou Creek and Little Bayou Creek Watershed Monitoring Program

    SciTech Connect (OSTI)

    Kszos, L.A.; Peterson, M.J.; Ryon; Smith, J.G.

    1999-03-01

    Biological monitoring of Little Bayou and Big Bayou creeks, which border the Paducah Site, has been conducted since 1987. Biological monitoring was conducted by University of Kentucky from 1987 to 1991 and by staff of the Environmental Sciences Division (ESD) at Oak Ridge National Laboratory (ORNL) from 1991 through March 1999. In March 1998, renewed Kentucky Pollutant Discharge Elimination System (KPDES) permits were issued to the US Department of Energy (DOE) and US Enrichment Corporation. The renewed DOE permit requires that a watershed monitoring program be developed for the Paducah Site within 90 days of the effective date of the renewed permit. This plan outlines the sampling and analysis that will be conducted for the watershed monitoring program. The objectives of the watershed monitoring are to (1) determine whether discharges from the Paducah Site and the Solid Waste Management Units (SWMUs) associated with the Paducah Site are adversely affecting instream fauna, (2) assess the ecological health of Little Bayou and Big Bayou creeks, (3) assess the degree to which abatement actions ecologically benefit Big Bayou Creek and Little Bayou Creek, (4) provide guidance for remediation, (5) provide an evaluation of changes in potential human health concerns, and (6) provide data which could be used to assess the impact of inadvertent spills or fish kill. According to the cleanup will result in these watersheds [Big Bayou and Little Bayou creeks] achieving compliance with the applicable water quality criteria.

  11. SHADING CALCULATIONS FOR THE BIG DISH Jeff Cumpston1

    E-Print Network [OSTI]

    ], building the 'SG4' 500m2 Big Dish solar paraboloidal concentrator for solar-thermal to electric energy shading fraction in an array of two-axis tracking collectors. Annual shading on the SG4 dish included transport network, these losses may be reduced by closely spacing collectors within the array. Another form

  12. Original article Energy balance storage terms and big-leaf

    E-Print Network [OSTI]

    Boyer, Edmond

    for the determination of big leaf forest evapotranspiration are not of the utmost importance. energy storage / deciduous. The available energy is defined as the net radiation (Rn), from which the net change in energy storage within), biomass heat storage (Sv) and photosynthetic energy storage (Sp). Soil heat storage Sg can be further

  13. People's Physics Book Ch 5-1 The Big Idea

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    People's Physics Book Ch 5-1 The Big Idea Acceleration is caused by force. All forces come in pairs of two bodies upon each other are always equal, and directed to contrary parts. Key Concepts · An object pairs must obey three rules: they must be of the same type of force, 1 Principia in modern English

  14. YOU MIGHT BE CELEBRATING THE BIG 3-0 IF....

    E-Print Network [OSTI]

    YOU MIGHT BE CELEBRATING THE BIG 3-0 IF.... You remember the power-house figures pictured or shine CVHS will be open for family fun, so do come to experience all the amazing Open House activities for a large variety of exotic animal clinical care. You might save a life with your purchase! To partner

  15. Constraints on massive gravity theory from big bang nucleosynthesis

    E-Print Network [OSTI]

    G. Lambiase

    2012-08-27

    The massive gravity cosmology is studied in the scenario of big bang nucleosynthesis. By making use of current bounds on the deviation from the fractional mass, we derive the constraints on the free parameters of the theory. The cosmological consequences of the model are also discussed in the framework of the PAMELA experiment.

  16. Long Lived Charged Massive Particles and Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Kazunori Kohri; Fumihiro Takayama

    2006-11-06

    We consider Big Bang Nucleosynthesis(BBN) with long lived charged massive particles. Before decaying, the long lived massive particles recombines with a light element to form a bound state like a hydrogen atom. We discuss the possible change of primordial light element abundances due to formations of such bound states.

  17. ORIGINAL ARTICLE Big dams and salmon evolution: changes in thermal

    E-Print Network [OSTI]

    Angilletta, Michael

    ORIGINAL ARTICLE Big dams and salmon evolution: changes in thermal regimes and their potential (Oncorhynchus spp.) across portions of their natural range, dams have arguably played a major role in many locations (NRC 1996; Lichatowich 1999; Ruckelshaus et al. 2002). Large dams (>15 m tall)­ designed

  18. Neutrino energy transport in weak decoupling and big bang nucleosynthesis

    E-Print Network [OSTI]

    Grohs, E; Kishimoto, C T; Paris, M W; Vlasenko, A

    2015-01-01

    We calculate the evolution of the early universe through the epochs of weak decoupling, weak freeze-out and big bang nucleosynthesis (BBN) by simultaneously coupling a full strong, electromagnetic, and weak nuclear reaction network with a multi-energy group Boltzmann neutrino energy transport scheme. Such an approach allows a detailed accounting of the evolution of the $\

  19. 1 Save | me O | God : for the waters are | come in even | unto my | soul. 2 I stick fast in the deep | mire where no | ground is : I am come into deep | waters so that the

    E-Print Network [OSTI]

    Flynn, E. Victor

    fast in the deep | mire · where no | ground is : I am come into deep | waters · so that the | floods | waters. 16 Let not the water-flood drown me neither let the deep | swallow · me | up : and | letPsalm 69 1 Save | me O | God : for the waters are | come in · even | unto · my | soul. 2 I stick

  20. Data Aware Caching for Big-Data Applications Using MapReduce

    E-Print Network [OSTI]

    Wu, Jie

    Data Aware Caching for Big-Data Applications Using MapReduce Yaxiong Zhao, Jie Wu #12;Outline · MapReduce and big-data · Cache description · Protocol ­ Relationship between job types and cache organization · Conclusion #12;Outline · MapReduce and big-data · Cache description · Protocol ­ Cache request and reply

  1. Representative Subsets For Big Data Learning using k-NN Graphs

    E-Print Network [OSTI]

    Representative Subsets For Big Data Learning using k-NN Graphs Raghvendra Mall, Vilen Jumutc, Rocco a deterministic method to obtain subsets from big data which are a good representative of the inherent structure a subset for this big data network. The FURS selection technique selects nodes from different dense regions

  2. CloudVista: Interactive and Economical Visual Cluster Analysis for Big Data in the Cloud

    E-Print Network [OSTI]

    CloudVista: Interactive and Economical Visual Cluster Analysis for Big Data in the Cloud Huiqi Xu Analysis of big data has become an important problem for many business and scientific applications, among which clustering and visualizing clusters in big data raise some unique challenges. This demonstration

  3. Preface: Big Data Is Not About The Data! 1 Gary King 2

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Preface: Big Data Is Not About The Data! 1 Gary King 2 Institute for Quantitative Social Science to it. Now "Big Data" is what you and I do. As trivial as this change sounds, we should be grateful is about. Throughout, we need to remember that for the most part, Big Data is not about the data. Data

  4. Recent Advances in Autonomic Provisioning of Big Data Applications on Clouds

    E-Print Network [OSTI]

    Sun, Xian-He

    Recent Advances in Autonomic Provisioning of Big Data Applications on Clouds Rajiv Ranjan, Lizhe for the user, which just pays for the used services. Big Data [2], [3], [4], [5] applications has become a com, medical imaging, and the like. The "BigData" problem, which is defined as the practice of collecting

  5. Crowdsourcing Semantics for Big Data in Geoscience Applications Tom Narock1

    E-Print Network [OSTI]

    Hitzler, Pascal

    Crowdsourcing Semantics for Big Data in Geoscience Applications Tom Narock1 and Pascal Hitzler 1 the potential to overcome some of the issues currently surrounding Big Data. Semantic technologies, and complexity of data sources ­ the very definition of Big Data. Yet, for some tasks, semantic algorithms do

  6. Towards an Understanding of Facets and Exemplars of Big Data Applications Geoffrey C.Fox1

    E-Print Network [OSTI]

    Towards an Understanding of Facets and Exemplars of Big Data Applications Geoffrey C.Fox1 Big Data applications from a variety of research and commercial areas and suggest a set Big Data properties, and then to understand applications with those properties. There are many

  7. Scalable Euclidean Embedding for Big Data Zohreh Alavi, Sagar Sharma, Lu Zhou, Keke Chen

    E-Print Network [OSTI]

    Scalable Euclidean Embedding for Big Data Zohreh Alavi, Sagar Sharma, Lu Zhou, Keke Chen Data is critical to many visualization techniques. At big-data scale, these algorithms need to be scalable affecting the algorithms are important research problems for visually analyzing big data. We propose

  8. A Cost-Benefit Analysis of Indexing Big Data with Map-Reduce

    E-Print Network [OSTI]

    Arampatzis, Avi

    A Cost-Benefit Analysis of Indexing Big Data with Map-Reduce Dimitrios Siafarikas Argyrios@ee.duth.gr Abstract--We reflect upon the challenge a Big Data analyst faces when dealing with the complex problem the system we developed works. Keywords: Information Retrieval, Big Data, Data Mining, Cluster, Inverted

  9. Principles of Software-defined Elastic Systems for Big Data Analytics

    E-Print Network [OSTI]

    Dustdar, Schahram

    Principles of Software-defined Elastic Systems for Big Data Analytics Hong-Linh Truong, Schahram}@dsg.tuwien.ac.at Abstract Techniques for big data analytics should support principles of elasticity that are inherent characteristics of big data described through the "four V's of volume, variety, velocity and veracity" [1] have

  10. Becoming data-savvy in a big-data world Meng Xu and Seung Yon Rhee

    E-Print Network [OSTI]

    Becoming data-savvy in a big-data world Meng Xu and Seung Yon Rhee Carnegie Institution for Science analysis. Big data analysis Advances in digital, information, and communications technologies generate enormous amounts of data ­ coined big data ­ in all sectors of our society [The Economist (2010) http

  11. Data Locality-Aware Query Evaluation for Big Data Analytics in Distributed Clouds

    E-Print Network [OSTI]

    Liang, Weifa

    Data Locality-Aware Query Evaluation for Big Data Analytics in Distributed Clouds Qiufen Xia, Weifa. Such data referred to as big data now becomes an invaluable asset to many businesses or organizations, as it can be used to identify business advantages by helping them make their strategic decisions. Big data

  12. When Private Set Intersection Meets Big Data: An Efficient and Scalable Protocol

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    When Private Set Intersection Meets Big Data: An Efficient and Scalable Protocol Changyu Dong1 to scale up smoothly when data being protected is big. Efficiency and scalability become critical criteria for privacy preserving protocols in the age of Big Data. In this paper, we present a new Private Set

  13. Querying Big Data: Bridging Theory and Practice Wenfei Fana,b

    E-Print Network [OSTI]

    Fan, Wenfei

    Querying Big Data: Bridging Theory and Practice Wenfei Fana,b , Jinpeng Huaib aInternational Research Center on Big Data, Beihang University, Beijing, No.37 XueYuan Road, 100083, Beijing, China Abstract Big data introduces challenges to query answering, from theory to practice. A number of questions

  14. Big Data: A Foundational Explanation Michael J. Sal, Richard J. Barilla, Steven Lindo, and Sam Elnagdy

    E-Print Network [OSTI]

    Tappert, Charles

    D6.1 Big Data: A Foundational Explanation Michael J. Salé, Richard J. Barilla, Steven Lindo for the science and practice of Big Data analytics. So long as innovations in data processing and storage capabilities continue, Big Data models and the technologies that enable them will also continue to evolve

  15. Genetic Algorithm based Data-aware Group Scheduling for Big Data Clouds Raghavendra Kune1

    E-Print Network [OSTI]

    Buyya, Rajkumar

    Genetic Algorithm based Data-aware Group Scheduling for Big Data Clouds Raghavendra Kune1 , Pramod on demand. Big Data Clouds is a new generation data analytics platform using Cloud computing as a back end and empirical tools. MapReduce scheduling models for Big Data computing operate in the cluster mode, where

  16. Bayes and Big Data: The Consensus Monte Carlo Algorithm Steven L. Scott1

    E-Print Network [OSTI]

    Cortes, Corinna

    Bayes and Big Data: The Consensus Monte Carlo Algorithm Steven L. Scott1 , Alexander W. Blocker1 of Business October 31, 2013 Abstract A useful definition of "big data" is data that is too big to comfortably by splitting data across multiple machines. Communication between large numbers of machines is expensive

  17. Big Data Storytelling through Interactive Maps Jayant Madhavan, Sreeram Balakrishnan, Kathryn Brisbin, Hector Gonzalez, Nitin Gupta,

    E-Print Network [OSTI]

    Cortes, Corinna

    Big Data Storytelling through Interactive Maps Jayant Madhavan, Sreeram Balakrishnan, Kathryn) brings big data collaboration and visualization to data-experts who possess neither large data high-profile stories. 1 Introduction Much of the current excitement about Big Data refers to performing

  18. On Interference-aware Provisioning for Cloud-based Big Data Processing

    E-Print Network [OSTI]

    Liu, Jiangchuan (JC)

    On Interference-aware Provisioning for Cloud-based Big Data Processing Yi YUAN, Haiyang WANG, Dan--Recent advances in cloud-based big data analysis offers a convenient mean for providing an elastic and cost and IBM deploy various of big data systems on their cloud platforms, aiming to occupy the huge market

  19. A System Architecture for Running Big Data Workflows in the Cloud Andrey Kashlev, Shiyong Lu

    E-Print Network [OSTI]

    Lu, Shiyong

    A System Architecture for Running Big Data Workflows in the Cloud Andrey Kashlev, Shiyong Lu management systems (SWFMSs) to utilize the power of Cloud computing to perform big data analyses. Unlike by running a big data workflow in Amazon EC2, FutureGrid Eucalyptus and OpenStack clouds. From

  20. Evaluating Corpora Documentation with regards to the Ethics and Big Data Charter

    E-Print Network [OSTI]

    Evaluating Corpora Documentation with regards to the Ethics and Big Data Charter Alain Couillault.de-mazancourt@eptica.com Abstract The authors have written the Ethics and Big Data Charter in collaboration with various agencies to show the benefit it offers. Keywords: language resources, ethics, documentation, big data. 1

  1. The Trento Big Data Platform for Public Administration and Large Companies: Use cases and Opportunities

    E-Print Network [OSTI]

    Velegrakis, Yannis

    The Trento Big Data Platform for Public Administration and Large Companies: Use cases in the Trentino territory for the collection, cleaning, integration and analysis of BigData. 2. BIGDATA PLATFORM Making the data public has no value if none can actually access, study and use that data. The BigData

  2. SLA-aware Provisioning and Scheduling of Cloud Resources for Big Data Analytics

    E-Print Network [OSTI]

    Buyya, Rajkumar

    SLA-aware Provisioning and Scheduling of Cloud Resources for Big Data Analytics Mohammed Alrokayan and traditional data management system could not keep up to scale of Big Data. They have to either invest heavily on their infrastructure or move their Big Data analytics to Cloud where they can benefit from both on-demand scalability

  3. Big data from small data: data-sharing in the 'long tail' of neuroscience.

    E-Print Network [OSTI]

    Ferguson, Adam R; Nielson, Jessica L; Cragin, Melissa H; Bandrowski, Anita E; Martone, Maryann E

    2014-01-01

    F O C U S O N B I G D ATA Big data from small data: data-small data sources into big data for improved knowledgeo mm e n ta r y Organized big data Data size Long-tail data

  4. Big Data Retour vers le Futur -3 -De Statisticien Data Scientist

    E-Print Network [OSTI]

    Besse, Philippe

    Big Data ­ Retour vers le Futur - 3 - De Statisticien à Data Scientist Philippe Besse Aurélien ; statistical learning ; big data. Université de Toulouse ­ INSA, Institut de Mathématiques, UMR CNRS 5219 omiques la décennie suivante ; ­ avènement récent et très médiatisé du big data. Nous terminons en

  5. Big Data Use Cases and Requirements GEOFFREY FOX, Indiana University, School of Informatics and Computing

    E-Print Network [OSTI]

    Big Data Use Cases and Requirements GEOFFREY FOX, Indiana University, School of Informatics and Computing Co-Chair, Use Cases & Requirements Subgroup, NIST Big Data Public Working Group WO CHANG, National Institute of Standards and Technologies Co-Chair, NIST Big Data Public Working Group Abstract We formed

  6. Handling Big Dimensions in Distributed Data Warehouses using the DWS Technique

    E-Print Network [OSTI]

    Song, Il-Yeol

    Handling Big Dimensions in Distributed Data Warehouses using the DWS Technique Marco Costa Critical tables creates a limitation to the applicability of the DWS technique to data warehouses with big is also common in big data warehouses [7]. Two types of parallelism can be explored at the query level

  7. The Big Picture Multisets Sets One Last Word A Tiny Introduction to Group Arithmetic

    E-Print Network [OSTI]

    Ponomarenko, Vadim

    The Big Picture Multisets Sets One Last Word A Tiny Introduction to Group Arithmetic past University July 3, 2008 http://www-rohan.sdsu.edu/vadim/arithmetic.pdf #12;The Big Picture Multisets Sets One of S. "Sequence"=Multiset #12;The Big Picture Multisets Sets One Last Word the basic problem Let G

  8. PHYSICAL REVIEW C 83, 018801 (2011) Electron screening and its effects on big-bang nucleosynthesis

    E-Print Network [OSTI]

    Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

    2011-01-01

    PHYSICAL REVIEW C 83, 018801 (2011) Electron screening and its effects on big-bang nucleosynthesis screening on nuclear reaction rates occurring during the big-bang nucleosynthesis epoch. The sensitivity. This work rules out electron screening as a relevant ingredient to big-bang nucleosynthesis, confirming

  9. Hazard avoidance for high-speed rough-terrain unmanned ground vehicles

    E-Print Network [OSTI]

    Spenko, Matthew J. (Matthew Julius), 1976-

    2005-01-01

    High-speed unmanned ground vehicles have important applications in rough-terrain. In these applications unexpected and dangerous situations can occur that require rapid hazard avoidance maneuvers. At high speeds, there is ...

  10. Very high efficiency phosphorescent organic light-emitting devices by using rough indium tin oxide

    SciTech Connect (OSTI)

    Zhang, Yingjie; Aziz, Hany, E-mail: h2aziz@uwaterloo.ca [Department of Electrical and Computer Engineering and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1 (Canada)

    2014-07-07

    The efficiency of organic light-emitting devices (OLEDs) is shown to significantly depend on the roughness of the indium tin oxide (ITO) anode. By using rougher ITO, light trapped in the ITO/organic wave-guided mode can be efficiently extracted, and a light outcoupling enhancement as high as 40% is achieved. Moreover, contrary to expectations, the lifetime of OLEDs is not affected by ITO roughness. Finally, an OLED employing rough ITO anode that exhibits a current efficiency of 56?cd/A at the remarkably high brightness of 10{sup 5}?cd/m{sup 2} is obtained. This represents the highest current efficiency at such high brightness to date for an OLED utilizing an ITO anode, without any external light outcoupling techniques. The results demonstrate the significant efficiency benefits of using ITO with higher roughness in OLEDs.

  11. Comprehensive Evaluation Model of Building Energy Efficiency Based on Rough Sets Theory 

    E-Print Network [OSTI]

    Ding, L.; Ruan, X.; Huang, J.; Li, Y.

    2006-01-01

    In order to improve the objectivity of building energy efficiency evaluation, this paper uses a new method to evaluate building energy efficiency on the basis of rough sets theory. The contribution of different subentry evaluation indicators...

  12. Significance of the Casimir force and surface roughness for actuation dynamics of MEMS

    E-Print Network [OSTI]

    Wijnand Broer; George Palasantzas; Jasper Knoester; Vitaly B. Svetovoy

    2013-03-14

    Using the measured optical response and surface roughness topography as inputs, we perform realistic calculations of the combined effect of Casimir and electrostatic forces on the actuation dynamics of micro-electromechanical systems (MEMS). In contrast with the expectations, roughness can influence MEMS dynamics even at distances between bodies significantly larger than the root-mean-square roughness. This effect is associated with statistically rare high asperities that can be locally close to the point of contact. It is found that, even though surface roughness appears to have a detrimental effect on the availability of stable equilibria, it ensures that those equilibria can be reached more easily than in the case of flat surfaces. Hence our findings play a principal role for the stability of microdevices such as vibration sensors, switches, and other related MEM architectures operating at distances below 100 nm.

  13. Reduction of vortex induced forces and motion through surface roughness control

    DOE Patents [OSTI]

    Bernitsas, Michael M; Raghavan, Kamaldev

    2014-04-01

    Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to decrease/suppress Vortex Induced Forces and Motion. Suppression is required when fluid-structure interaction becomes destructive as in VIM of flexible cylinders or rigid cylinders on elastic support, such as underwater pipelines, marine risers, tubes in heat exchangers, nuclear fuel rods, cooling towers, SPAR offshore platforms.

  14. Enhancement of vortex induced forces and motion through surface roughness control

    DOE Patents [OSTI]

    Bernitsas, Michael M. (Saline, MI); Raghavan, Kamaldev (Houston, TX)

    2011-11-01

    Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to increase Vortex Induced Forces and Motion. Enhancement is needed in such applications as harnessing of clean and renewable energy from ocean/river currents using the ocean energy converter VIVACE (Vortex Induced Vibration for Aquatic Clean Energy).

  15. Solid Deuterium-Tritium Surface Roughness In A Beryllium Inertial Confinement Fusion Shell

    SciTech Connect (OSTI)

    Kozioziemski, B J; Sater, J D; Moody, J D; Montgomery, D S; Gautier, C

    2006-04-19

    Solid deuterium-tritium (D-T) fuel layers for inertial confinement fusion experiments were formed inside of a 2 mm diameter beryllium shell and were characterized using phase-contrast enhanced x-ray imaging. The solid D-T surface roughness is found to be 0.4 {micro}m for modes 7-128 at 1.5 K below the melting temperature. The layer roughness is found to increase with decreasing temperature, in agreement with previous visible light characterization studies. However, phase-contrast enhanced x-ray imaging provides a more robust surface roughness measurement than visible light methods. The new x-ray imaging results demonstrate clearly that the surface roughness decreases with time for solid D-T layers held at 1.5 K below the melting temperature.

  16. 2013 Mark S. Fox City Data: Big, Open and Linked 1 City Data: Big, Open and Linked

    E-Print Network [OSTI]

    Sun, Yu

    is their "grease disposal" compliance program1 . 61% of all sewer backups are caused by improperly disposed of restaurant grease. The city combined sewer data, grease hauling licenses data and grease producer data sources of grease entering the sewer system. Big Data is the buzzword du jour. It is rare to read

  17. hp-finite-elements for simulating electromagnetic fields in optical devices with rough textures

    E-Print Network [OSTI]

    Burger, S; Hammerschmidt, M; Herrmann, S; Pomplun, J; Schmidt, F; Wohlfeil, B; Zschiedrich, L

    2015-01-01

    The finite-element method is a preferred numerical method when electromagnetic fields at high accuracy are to be computed in nano-optics design. Here, we demonstrate a finite-element method using hp-adaptivity on tetrahedral meshes for computation of electromagnetic fields in a device with rough textures. The method allows for efficient computations on meshes with strong variations in element sizes. This enables to use precise geometry resolution of the rough textures. Convergence to highly accurate results is observed.

  18. EA-1617: Lovell-Yellowtail and Basin-Lovell Transmission Line Rebuild Project, Big Horn County, Wyoming, and Big Horn and Carbon Counties, Montana

    Broader source: Energy.gov [DOE]

    DOE’s Western Area Power Administration prepared this EA and a finding of no significant impact for a proposal to rebuild the Lovell-Yellowtail (LV-YT) No. 1 and No. 2 115-kV transmission lines, located in Big Horn County, Wyoming, and Big Horn and Carbon Counties in Montana, and the Basin-Lovell 115-kV transmission line in Big Horn County, Wyoming.

  19. Challenges and Opportunities with Big Data A community white paper developed by leading researchers across the United States

    E-Print Network [OSTI]

    Challenges and Opportunities with Big Data A community white paper developed by leading researchers recognized broadly, and there is growing enthusiasm for the notion of ``Big Data.'' While the promise of Big, scale, timeliness, complexity, and privacy problems with Big Data impede progress at all phases

  20. StratOS: A Big Data Framework for Scientific Computing

    E-Print Network [OSTI]

    Stickley, Nathaniel R

    2015-01-01

    We introduce StratOS, a Big Data platform for general computing that allows a datacenter to be treated as a single computer. With StratOS, the process of writing a massively parallel program for a datacenter is no more complicated than writing a Python script for a desktop computer. Users can run pre-existing analysis software on data distributed over thousands of machines with just a few keystrokes. This greatly reduces the time required to develop distributed data analysis pipelines. The platform is built upon industry-standard, open-source Big Data technologies, from which it inherits fast data throughput and fault tolerance. StratOS enhances these technologies by adding an intuitive user interface, automated task monitoring, and other usability features.

  1. Big Bang Day: 5 Particles - 3. The Anti-particle

    ScienceCinema (OSTI)

    None

    2011-04-25

    Simon Singh looks at the stories behind the discovery of 5 of the universe's most significant subatomic particles: the Electron, the Quark, the Anti-particle, the Neutrino and the "next particle". 3. The Anti-particle. It appears to be the stuff of science fiction. Associated with every elementary particle is an antiparticle which has the same mass and opposite charge. Should the two meet and combine, the result is annihilation - and a flash of light. Thanks to mysterious processes that occurred after the Big Bang there are a vastly greater number of particles than anti-particles. So how could their elusive existence be proved? At CERN particle physicists are crashing together subatomic particles at incredibly high speeds to create antimatter, which they hope will finally reveal what happened at the precise moment of the Big Bang to create the repertoire of elementary particles and antiparticles in existence today.

  2. Big-Bang Nucleosynthesis verifies classical Maxwell-Boltzmann distribution

    E-Print Network [OSTI]

    S. Q. Hou; J. J. He; A. Parikh; K. Daid; C. Bertulani

    2014-08-15

    We provide the most stringent constraint to date on possible deviations from the usually-assumed Maxwell-Boltzmann (MB) velocity distribution for nuclei in the Big-Bang plasma. The impact of non-extensive Tsallis statistics on thermonuclear reaction rates involved in standard models of Big-Bang Nucleosynthesis (BBN) has been investigated. We find that the non-extensive parameter $q$ may deviate by, at most, $|\\delta q|$=6$\\times$10$^{-4}$ from unity for BBN predictions to be consistent with observed primordial abundances; $q$=1 represents the classical Boltzmann-Gibbs statistics. This constraint arises primarily from the {\\em super}sensitivity of endothermic rates on the value of $q$, which is found for the first time. As such, the implications of non-extensive statistics in other astrophysical environments should be explored. This may offer new insight into the nucleosynthesis of heavy elements.

  3. Big data for ecologists: Highlighting the ORNL DAAC

    SciTech Connect (OSTI)

    Boyer, Alison G [ORNL] [ORNL; Cook, Robert B [ORNL] [ORNL; Devarakonda, Ranjeet [ORNL] [ORNL; Eby, Pete I [ORNL] [ORNL; Thornton, Michele M [ORNL] [ORNL; Thornton, Peter E [ORNL] [ORNL; SanthanaVannan, Suresh K [ORNL] [ORNL; Virdi, Makhan L [ORNL] [ORNL; Wei, Yaxing [ORNL] [ORNL

    2014-01-01

    Ecologists are increasingly confronted by questions that can be addressed only by integrating data from numerous sources, often across large geographic areas and broad time periods. The supply of ecological big data is increasing at a rapid pace as researchers are publishing their data sets and large, public science and data infrastructures (such as NEON, DataONE, LTER, & NCEAS) are producing and curating extensive volumes of complex data and metadata. While supply of, and demand for, ecological data is on the rise, many ecologists now face a new challenge in locating and synthesizing the data relevant for their particular question. Here we highlight selected popular big data products applicable to ecological research available from the NASA Distributed Active Archive Center (DAAC) located at Oak Ridge National Laboratory (ORNL).

  4. Quantization of Big Bang in crypto-Hermitian Heisenberg picture

    E-Print Network [OSTI]

    Znojil, Miloslav

    2015-01-01

    A background-independent quantization of the Universe near its Big Bang singularity is considered using a drastically simplified toy model. Several conceptual issues are addressed. (1) The observable spatial-geometry characteristics of our empty-space expanding Universe is sampled by the time-dependent operator $Q=Q(t)$ of the distance between two space-attached observers (``Alice and Bob''). (2) For any pre-selected guess of the simple, non-covariant time-dependent observable $Q(t)$ one of the Kato's exceptional points (viz., $t=\\tau_{(EP)}$) is postulated {\\em real-valued}. This enables us to treat it as the time of Big Bang. (3) During our ``Eon'' (i.e., at all $t>\\tau_{(EP)}$) the observability status of operator $Q(t)$ is mathematically guaranteed by its self-adjoint nature with respect to an {\\em ad hoc} Hilbert-space metric $\\Theta(t) \

  5. BIG BANG NUCLEOSYNTHESIS WITH A NON-MAXWELLIAN DISTRIBUTION

    SciTech Connect (OSTI)

    Bertulani, C. A. [GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany)] [GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany); Fuqua, J. [Texas A and M University-Commerce, Commerce, TX 75429-3011 (United States)] [Texas A and M University-Commerce, Commerce, TX 75429-3011 (United States); Hussein, M. S. [Instituto de Estudos Avancados, Universidade de Sao Paulo, C.P. 72.012, 05508-970 Sao Paulo (Brazil)] [Instituto de Estudos Avancados, Universidade de Sao Paulo, C.P. 72.012, 05508-970 Sao Paulo (Brazil)

    2013-04-10

    The abundances of light elements based on the big bang nucleosynthesis model are calculated using the Tsallis non-extensive statistics. The impact of the variation of the non-extensive parameter q from the unity value is compared to observations and to the abundance yields from the standard big bang model. We find large differences between the reaction rates and the abundance of light elements calculated with the extensive and the non-extensive statistics. We found that the observations are consistent with a non-extensive parameter q = 1{sub -} {sub 0.12}{sup +0.05}, indicating that a large deviation from the Boltzmann-Gibbs statistics (q = 1) is highly unlikely.

  6. Electron screening and its effects on big-bang nucleosynthesis

    SciTech Connect (OSTI)

    Wang Biao; Bertulani, C. A.; Balantekin, A. B. [Department of Physics, Texas A and M University, Commerce, Texas 75429 (United States); Physics Department, University of Wisconsin-Madison, 1150 University Avenue, Madison, Wisconsin 53706 (United States)

    2011-01-15

    We study the effects of electron screening on nuclear reaction rates occurring during the big-bang nucleosynthesis epoch. The sensitivity of the predicted elemental abundances on electron screening is studied in detail. It is shown that electron screening does not produce noticeable results in the abundances unless the traditional Debye-Hueckel model for the treatment of electron screening in stellar environments is enhanced by several orders of magnitude. This work rules out electron screening as a relevant ingredient to big-bang nucleosynthesis, confirming a previous study [see Itoh et al., Astrophys. J. 488, 507 (1997)] and ruling out exotic possibilities for the treatment of screening beyond the mean-field theoretical approach.

  7. Brawny Wimpy Brawny Investigates the efficiency of executing Big Data

    E-Print Network [OSTI]

    Teo, Yong-Meng

    Preliminary Results 4 Big Data is everywhere NVIDIA GPUs become energy-efficient Efficiency Execution time Energy - Performance-to-power Ratio (PPR) - Energy-delay Product (EDP) Approach Summary5 GPU Technology Frequency 1.60 - 3.40 GHz 0.05 - 1.40 GHz Cache 32kB L1, 256kB L2, 8MB L3 32kB L1, 1MB L2 Memory 8GB DDR3 2

  8. Possible evidence for "dark radiation" from Big Bang Nucleosynthesis Data

    E-Print Network [OSTI]

    V. V. Flambaum; E. V. Shuryak

    2006-02-06

    We address the emerging discrepancy between the Big Bang Nucleosynthesis data and standard cosmology, which asks for a bit longer evolution time. If this effect is real, one possible implication (in a framework of brane cosmology model) is that there is a ``dark radiation'' component which is negative and makes few percents of ordinary matter density. If so, all scales of this model can be fixed, provided brane-to-bulk leakage problem is solved.

  9. Supernova bangs as a tool to study big bang

    SciTech Connect (OSTI)

    Blinnikov, S. I., E-mail: Sergei.Blinnikov@itep.ru [Institute for Theoretical and Experimental Physics (Russian Federation)

    2012-09-15

    Supernovae and gamma-ray bursts are the most powerful explosions in observed Universe. This educational review tells about supernovae and their applications in cosmology. It is explained how to understand the production of light in the most luminous events with minimum required energy of explosion. These most luminous phenomena can serve as primary cosmological distance indicators. Comparing the observed distance dependence on red shift with theoretical models one can extract information on evolution of the Universe from Big Bang until our epoch.

  10. Constraints on massive gravity theory from big bang nucleosynthesis

    SciTech Connect (OSTI)

    Lambiase, G., E-mail: lambiase@sa.infn.it [Dipartimento di Fisica 'E. R.Caianiello', Università di Salerno, 84081 Baronissi (Italy)

    2012-10-01

    The massive gravity cosmology is studied in the scenario of big bang nucleosynthesis. By making use of current bounds on the deviation from the fractional mass, we derive the constraints on the free parameters of the theory. The cosmological consequences of the model are also analyzed in the framework of the PAMELA experiment, i.e. an excess of positron events, that the conventional cosmology and particle physics cannot explain.

  11. Constraining Big Bang lithium production with recent solar neutrino data

    E-Print Network [OSTI]

    Takács, Marcell P; Szücs, Tamás; Zuber, Kai

    2015-01-01

    The 3He({\\alpha},{\\gamma})7Be reaction affects not only the production of 7Li in Big Bang nucleosynthesis, but also the fluxes of 7Be and 8B neutrinos from the Sun. This double role is exploited here to constrain the former by the latter. A number of recent experiments on 3He({\\alpha},{\\gamma})7Be provide precise cross section data at E = 0.5-1.0 MeV center-of-mass energy. However, there is a scarcity of precise data at Big Bang energies, 0.1-0.5 MeV, and below. This problem can be alleviated, based on precisely calibrated 7Be and 8B neutrino fluxes from the Sun that are now available, assuming the neutrino flavour oscillation framework to be correct. These fluxes and the standard solar model are used here to determine the 3He(alpha,gamma)7Be astrophysical S-factor at the solar Gamow peak, S(23+6-5 keV) = 0.548+/-0.054 keVb. This new data point is then included in a re-evaluation of the 3He({\\alpha},{\\gamma})7Be S-factor at Big Bang energies, following an approach recently developed for this reaction in the c...

  12. Large-eddy simulations of surface roughness parameter sensitivity to canopy-structure characteristics

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

    Maurer, K. D.; Bohrer, G.; Kenny, W. T.; Ivanov, V. Y.

    2015-04-30

    Surface roughness parameters, namely the roughness length and displacement height, are an integral input used to model surface fluxes. However, most models assume these parameters to be a fixed property of plant functional type and disregard the governing structural heterogeneity and dynamics. In this study, we use large-eddy simulations to explore, in silico, the effects of canopy-structure characteristics on surface roughness parameters. We performed a virtual experiment to test the sensitivity of resolved surface roughness to four axes of canopy structure: (1) leaf area index, (2) the vertical profile of leaf density, (3) canopy height, and (4) canopy gap fraction.more »We found roughness parameters to be highly variable, but uncovered positive relationships between displacement height and maximum canopy height, aerodynamic canopy height and maximum canopy height and leaf area index, and eddy-penetration depth and gap fraction. We also found negative relationships between aerodynamic canopy height and gap fraction, as well as between eddy-penetration depth and maximum canopy height and leaf area index. We generalized our model results into a virtual "biometric" parameterization that relates roughness length and displacement height to canopy height, leaf area index, and gap fraction. Using a decade of wind and canopy-structure observations in a site in Michigan, we tested the effectiveness of our model-driven biometric parameterization approach in predicting the friction velocity over heterogeneous and disturbed canopies. We compared the accuracy of these predictions with the friction-velocity predictions obtained from the common simple approximation related to canopy height, the values calculated with large-eddy simulations of the explicit canopy structure as measured by airborne and ground-based lidar, two other parameterization approaches that utilize varying canopy-structure inputs, and the annual and decadal means of the surface roughness parameters at the site from meteorological observations. We found that the classical representation of constant roughness parameters (in space and time) as a fraction of canopy height performed relatively well. Nonetheless, of the approaches we tested, most of the empirical approaches that incorporate seasonal and interannual variation of roughness length and displacement height as a function of the dynamics of canopy structure produced more precise and less biased estimates for friction velocity than models with temporally invariable parameters.« less

  13. The friction factor of two-dimensional rough-boundary turbulent soap film flows

    E-Print Network [OSTI]

    Nicholas Guttenberg; Nigel Goldenfeld

    2009-03-25

    We use momentum transfer arguments to predict the friction factor $f$ in two-dimensional turbulent soap-film flows with rough boundaries (an analogue of three-dimensional pipe flow) as a function of Reynolds number Re and roughness $r$, considering separately the inverse energy cascade and the forward enstrophy cascade. At intermediate Re, we predict a Blasius-like friction factor scaling of $f\\propto\\textrm{Re}^{-1/2}$ in flows dominated by the enstrophy cascade, distinct from the energy cascade scaling of $\\textrm{Re}^{-1/4}$. For large Re, $f \\sim r$ in the enstrophy-dominated case. We use conformal map techniques to perform direct numerical simulations that are in satisfactory agreement with theory, and exhibit data collapse scaling of roughness-induced criticality, previously shown to arise in the 3D pipe data of Nikuradse.

  14. Rough surface electrical contact resistance considering scale dependent properties and quantum effects

    SciTech Connect (OSTI)

    Jackson, Robert L.; Crandall, Erika R.; Bozack, Michael J.

    2015-05-21

    The objective of this work is to evaluate the effect of scale dependent mechanical and electrical properties on electrical contact resistance (ECR) between rough surfaces. This work attempts to build on existing ECR models that neglect potentially important quantum- and size-dependent contact and electrical conduction mechanisms present due to the asperity sizes on typical surfaces. The electrical conductance at small scales can quantize or show a stepping trend as the contact area is varied in the range of the free electron Fermi wavelength squared. This work then evaluates if these effects remain important for the interface between rough surfaces, which may include many small scale contacts of varying sizes. The results suggest that these effects may be significant in some cases, while insignificant for others. It depends on the load and the multiscale structure of the surface roughness.

  15. General contact mechanics theory for randomly rough surfaces with application to rubber friction

    E-Print Network [OSTI]

    Michele Scaraggi; Bo N. J. Persson

    2015-06-23

    We generalize the Persson contact mechanics and rubber friction theory to the case where both surfaces have surface roughness. The solids can be rigid, elastic or viscoelastic, and can be homogeneous or layered. We calculate the contact area, the viscoelastic contribution to the friction force, and the average interfacial separation as a function of the sliding speed and the nominal contact pressure. We illustrate the theory with numerical results for a rubber block sliding on a road surface. We find that with increasing sliding speed, the influence of the roughness on the rubber block decreases, and for typical sliding speeds involved in tire dynamics it can be neglected.

  16. Effect of surface roughness and polymeric additive on nucleate pool boiling at subatmospheric pressures

    SciTech Connect (OSTI)

    Tewari, P.K.; Verma, R.K.; Ramani, M.P.S.; Mahajan, S.P.

    1986-09-01

    This investigation pertains to boiling heat transfer from a submerged flat surface at subatmospheric and atmospheric pressures in the presence of hydroxy ethyl cellulose (HEC) as a polymeric additive in small doses. Boiling was carried out in presence of the additive on smooth and rough aluminium surfaces having effective cavity size within the range as predicted by Hsu model and the pressure was kept in the range of 8 - 100 KN/sq.m (abs). Effects of surface roughness, saturation pressure and polymer concentration on boiling heat transfer were studied and the results were compared with Rohsenow's correlation.

  17. Geospatial Big Data Handling Theory and Methods: A Review and Research Challenges

    E-Print Network [OSTI]

    Li, S; Anton, F; Sester, M; Winter, S; Coltekin, A; Pettit, C; Jiang, B; Haworth, J; Stein, A; Cheng, T

    2015-01-01

    Big data has now become a strong focus of global interest that is increasingly attracting the attention of academia, industry, government and other organizations. Big data can be situated in the disciplinary area of traditional geospatial data handling theory and methods. The increasing volume and varying format of collected geospatial big data presents challenges in storing, managing, processing, analyzing, visualizing and verifying the quality of data. This has implications for the quality of decisions made with big data. Consequently, this position paper of the International Society for Photogrammetry and Remote Sensing (ISPRS) Technical Commission II (TC II) revisits the existing geospatial data handling methods and theories to determine if they are still capable of handling emerging geospatial big data. Further, the paper synthesises problems, major issues and challenges with current developments as well as recommending what needs to be developed further in the near future. Keywords: Big data, Geospatial...

  18. C-CAMP BIRAC-BIG 1st CALL ENTREPRENEUR VALEDICTORY MENTORING PROGRAMME

    E-Print Network [OSTI]

    Bhalla, Upinder S.

    .05: Introductions 7.05 ­ 7.35: 5 minute Presentations by BIG Grantees o Achira Labs o Codon Biosciences o Pandorum.30 ­ 1.00 pm: Presentations by BIG Grantees 15 mins each followed by 15 mins of interactions Scientific.30: Vikas Mehra 12.30 ­ 1.00: Sea6 Energy 1.00 ­ 2.00: Lunch 2.00 ­ 3.30: Presentations by BIG Grantees (con

  19. RE-SCHEDULED FROM JAN 22 TO JAN 28 - COLLOQUIUM: Addressing Big...

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

    Colloquia MBG Auditorium RE-SCHEDULED FROM JAN 22 TO JAN 28 - COLLOQUIUM: Addressing Big Data Challenges in Simulation-based Science Professor Manish Parashar Rutgers...

  20. A Simple/Short Introduction to Pre-Big-Bang Physics/Cosmology

    E-Print Network [OSTI]

    G. Veneziano

    1998-03-02

    A simple, non-technical introduction to the pre-big bang scenario is given, emphasizing physical motivations, considerations, and consequences over formalism.

  1. Science DMZ-Based Big-Science Pacific Research Platform Debuts...

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

    Science DMZ-Based Big-Science Pacific Research Platform Debuts at CENIC 2015 Annual Conference News & Publications ESnet News Media & Press Publications and Presentations Galleries...

  2. Big & Small Ideas: How to Lower Costs of Project Finance to achieve...

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

    ssgrandchallengefinancearfin.pdf More Documents & Publications Finance Idol Word Cloud Developing Big and Small Ideas: How Can We Lower the Costs of Project Finance to...

  3. Reactor Vessel Removal: Improving Performance Big Rock Point Lessons Learned

    SciTech Connect (OSTI)

    Daly, P.T. [BNG America, D and D Operations, 804 South Illinois Avenue, Oak Ridge, TN 37830 (United States)

    2006-07-01

    The Big Rock Point (BRP) reactor vessel was successfully removed, packaged in a Type B shipping container, transported, and buried. The process took almost 4 years of work by many people and a variety of companies. This paper will discuss several areas that can reduce schedule time, resulting in reduced cost and employee dose exposure. For maximum cost effectiveness, these lessons should be applied during the planning stages when developing baseline cost and schedule, As Low As Reasonably Achievable (ALARA) budgets, and work processes. (authors)

  4. EIS-0315: Caithness Big Sandy Project, Wikieup, AZ

    Broader source: Energy.gov [DOE]

    This EIS analyzes DOE's decision to approve Big Sandy Energy to interconnect a proposed 720-MW generating facility near Wikieup, Ariz., with the Mead-Phoenix Project 500-kV transmission line. The powerplant plan includes a proposed high-pressure natural gas pipeline, permanent access road and water pipelines that would cross BLM-administered land. Because the project could 'significantly affect the quality of the human environment,' studies must be done to identify environmental effects. WAPA is partnering with the Bureau of Land Management in Kingman on this project. BLM and Western have delayed issuing the Supplemental Draft EIS at the request of the applicant, Caithness Energy."

  5. Tachyon cosmology, supernovae data and the Big Brake singularity

    E-Print Network [OSTI]

    Z. Keresztes; L. Á. Gergely; V. Gorini; U. Moschella; A. Yu. Kamenshchik

    2009-04-21

    We compare the existing observational data on type Ia Supernovae with the evolutions of the universe predicted by a one-parameter family of tachyon models which we have introduced recently in paper \\cite{we-tach}. Among the set of the trajectories of the model which are compatible with the data there is a consistent subset for which the universe ends up in a new type of soft cosmological singularity dubbed Big Brake. This opens up yet another scenario for the future history of the universe besides the one predicted by the standard $\\Lambda$CDM model.

  6. Quantum support vector machine for big data classification

    E-Print Network [OSTI]

    Patrick Rebentrost; Masoud Mohseni; Seth Lloyd

    2014-07-10

    Supervised machine learning is the classification of new data based on already classified training examples. In this work, we show that the support vector machine, an optimized binary classifier, can be implemented on a quantum computer, with complexity logarithmic in the size of the vectors and the number of training examples. In cases when classical sampling algorithms require polynomial time, an exponential speed-up is obtained. At the core of this quantum big data algorithm is a non-sparse matrix exponentiation technique for efficiently performing a matrix inversion of the training data inner-product (kernel) matrix.

  7. Constraints on Light Dark Matter from Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Brian Henning; Hitoshi Murayama

    2012-05-29

    We examine the effects of relic dark matter annihilations on big bang nucleosynthesis (BBN). The magnitude of these effects have scale simply with the dark matter mass and annihilation cross-section, which we derive. Estimates based on these scaling behaviors indicate that BBN severely constrains hadronic and radiative dark matter annihilation channels in the previously unconsidered dark matter mass region MeV $\\lesssim m_{\\chi} \\lesssim 10$ GeV. Interestingly, we find that BBN constraints on hadronic annihilation channels are competitive with similar bounds derived from the cosmic microwave background.

  8. Big bang nucleosynthesis as a probe of fundamental "constants"

    E-Print Network [OSTI]

    Thomas Dent; Steffen Stern

    2007-10-25

    Big Bang nucleosynthesis (BBN) is the earliest sensitive probe of the values of many fundamental particle physics parameters. We have found the leading linear dependences of primordial abundances on all relevant parameters of the standard BBN code, including binding energies and nuclear reaction rates. This enables us to set limits on possible variations of fundamental parameters. We find that 7Li is expected to be significantly more sensitive than other species to many fundamental parameters, a result which also holds for variations of coupling strengths in grand unified (GUT) models. Our work also indicates which areas of nuclear theory need further development if the values of ``constants'' are to be more accurately probed.

  9. Big Sky Regional Carbon Sequestration Partnership--Validation Phase

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11DESERTWaterSharingBeyondBang orBigProgram

  10. Nonprofits create big economic impact in northern New Mexico

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shinesSolarNew scholarshipThreeFebruary 2015NikkiBig

  11. BIG SUN Energy Technology Incorporation | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION JEnvironmental Jump to:EAandAmminex AAustria Geothermal RegionAvraPáginasSolarBBBFCLands |BIG SUN

  12. Big Flats, Wisconsin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION JEnvironmental JumpInformation BeaufortBentMichigan:Greece)Daddy s Biodiesel Inc JumpBig Flats,

  13. Big Horn County, Montana: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION JEnvironmental JumpInformation BeaufortBentMichigan:Greece)Daddy s Biodiesel Inc JumpBig

  14. Big Windy Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION JEnvironmental JumpInformation BeaufortBentMichigan:Greece)Daddy s BiodieselSky,Big Windy Hot

  15. Big Bend Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher HomesBeverly,Lake, California:Big Bend

  16. Big Horn Rural Electric Co | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher HomesBeverly,Lake,GeysersBig Horn

  17. Big Horn Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher HomesBeverly,Lake,GeysersBig HornWind

  18. Big Rapids, Michigan: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher HomesBeverly,Lake,GeysersBig

  19. Big River, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    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 QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher HomesBeverly,Lake,GeysersBigRiver,

  20. Big Green Bus: A Vehicle for Change | Department of Energy

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

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p uBUSEnergy|| Department ofBuildings,Beverly RamseyThe Big

  1. Laboratory's Season of Giving was a big success

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and masthead BerkeleySiteSeason of Giving big

  2. Big Savings on Outdoor Lighting | 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 DataEnergy Webinar:I DueBETO Quiz -Technologies forBig Savings on Outdoor

  3. Atmospheric Momentum Roughness Applied to Stage-Discharge Relationships in Flood Plains

    E-Print Network [OSTI]

    Atmospheric Momentum Roughness Applied to Stage-Discharge Relationships in Flood Plains Jennifer M and discharge relationship for turbulent flows over vegetated flood plains. The model is based on the turbulent sites. The model estimates of the flood flow discharges from a natural site are compared to observed

  4. Numerical method for calculating the apparent eddy current conductivity loss on randomly rough surfaces

    E-Print Network [OSTI]

    Nagy, Peter B.

    Numerical method for calculating the apparent eddy current conductivity loss on randomly rough Because of their frequency-dependent penetration depth, eddy current measurements are capable of mapping of eddy current conductivity, thereby decreasing the accuracy of the measurements, especially in thermally

  5. A simple numerical model of the apparent loss of eddy current conductivity due to surface roughness

    E-Print Network [OSTI]

    Nagy, Peter B.

    A simple numerical model of the apparent loss of eddy current conductivity due to surface roughness of eddy current conductivity has been suggested as a possible means to allow the nondestructive evaluation, the path of the eddy current must follow a more tortuous route in the material, which produces a reduction

  6. Importance of thermal effects and sea surface roughness for offshore wind resource assessment

    E-Print Network [OSTI]

    Heinemann, Detlev

    Importance of thermal effects and sea surface roughness for offshore wind resource assessment National Laboratory, Roskilde, Denmark Abstract The economic feasibility of offshore wind power utilisation depends on the favourable wind conditions offshore compared to sites on land, which have to compensate

  7. FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS

    E-Print Network [OSTI]

    Gudmundsson, Jon Steinar

    FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS DETERMINATION DU and Technology, Norway ABSTRACT Pressure drop experiments on natural gas flow at 80 to 120 bar pressure and high of natural gas at typical operating pressures (100-180 bar). At such Reynolds numbers the classical Colebrook

  8. Flow over rough topography. A preliminary study with high resolution topography at Ormen Lange

    E-Print Network [OSTI]

    Avlesen, Helge

    Flow over rough topography. A preliminary study with high resolution topography at Ormen Lange not able to march as long in time as desired, due to stability issues. On the given topography for selected horizontal sections, after im- posing a constant velocity flow over the given topography

  9. Under consideration for publication in J. Fluid Mech. 1 Nonlinear dynamics over rough topography

    E-Print Network [OSTI]

    Vanneste, Jacques

    Under consideration for publication in J. Fluid Mech. 1 Nonlinear dynamics over rough topography-dimensional, pe- riodic or random, small-scale topography is investigated using an asymptotic approach. Averaged (or homogenised) evolution equations which account for the flow-topography in- teraction are derived

  10. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 1 A Simplified Formulation for Rough Surface

    E-Print Network [OSTI]

    IEEEProof IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 1 A Simplified Formulation for Rough paper. To download the IEEE Taxonomy, go to http://www.30 ieee.org/documents/taxonomy_v101.pdf.31 I, OH 43210 USA. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee

  11. Effect of Substrate Roughness on D Spacing Supports Theoretical Resolution of Vapor Pressure Paradox

    E-Print Network [OSTI]

    Nagle, John F.

    Effect of Substrate Roughness on D Spacing Supports Theoretical Resolution of Vapor Pressure with and provides experimental support for a recently proposed theoretical resolution of the vapor pressure paradox has been called the vapor pressure paradox (Rand and Parsegian, 1989). Resolving this paradox

  12. Stress Drop during Earthquakes: Effect of Fault Roughness Scaling by Thibault Candela, Franois Renard,*

    E-Print Network [OSTI]

    Schmittbuhl, Jean

    Stress Drop during Earthquakes: Effect of Fault Roughness Scaling by Thibault Candela, François parameter of static stress drop during an earthquake is related to the scaling properties of the fault and focusing on elastic deformation of the topography, which is the dominant mode at large scales, the stress

  13. Hydrothermal coupling in a self-affine rough fracture A. Neuville,* R. Toussaint, and J. Schmittbuhl

    E-Print Network [OSTI]

    Schmittbuhl, Jean

    - thermics is an intensively developing field. Deep enhanced geothermal systems EGSs are based on the energy the hydraulic flow and subse- quently to enhance the thermal exchange. Fracture roughness might, in the opposite as an ellipse or a poly- hedron. This is the case in most fracture network models used for geothermal 10

  14. Roughly 120 years ago, an incon-spicuous pest took a ride on a

    E-Print Network [OSTI]

    Latchininsky, Alexandre

    Roughly 120 years ago, an incon- spicuous pest took a ride on a ship from Europe bound discussed the projects he had avail- able, the horn fly project fit best with my background. Horn Fly First, the cattle use costly energy meant for growth to rid themselves of the flies. Some of the behavioral changes

  15. Hydro-thermal flow in a rough fracture EC Contract SES6-CT-2003-502706

    E-Print Network [OSTI]

    Toussaint, Renaud

    Hydro-thermal flow in a rough fracture EC Contract SES6-CT-2003-502706 PARTICIPANT ORGANIZATION NAME: CNRS Synthetic 2nd year report Related with Work Package............ HYDRO-THERMAL FLOW in the influence of a realistic geometry of the fracture on its hydro-thermal response. Several studies have

  16. Relations in Mathematical Morphology with applications to Graphs and Rough Sets

    E-Print Network [OSTI]

    Stell, John

    School of Computing, University of Leeds Leeds, LS2 9JT, U.K. jgs@comp.leeds.ac.uk Abstract. Rough sets of morphology for graphs. The structure of the paper is as follows. I begin in Section 2 with a brief review

  17. Light trapping in thin-film solar cells with randomly rough and hybrid

    E-Print Network [OSTI]

    Light trapping in thin-film solar cells with randomly rough and hybrid textures Piotr Kowalczewski. M. Smets, and M. Zeman, "Plasmonic light trapping in thin-film silicon solar cells with improved Lambertian limits in thin film silicon solar cells with 1D and 2D periodic patterns," Opt. Express 20, A224­A

  18. ENGINEERED SUBSTRATES FOR THIN-FILM SOLAR CELLS: SCATTERING PROPERTIES OF 1D ROUGHNESS

    E-Print Network [OSTI]

    ENGINEERED SUBSTRATES FOR THIN-FILM SOLAR CELLS: SCATTERING PROPERTIES OF 1D ROUGHNESS S. Del Sorbo, Optical Properties, Substrates, Texturisation, Thin Film Solar Cells 1 MOTIVATION OF THIS WORK The aim of thin film technology is to reduce both the electrical transport losses in the bulk region of a solar

  19. Molecular Dynamics Simulation of Thin Films with Rough and Asymmetric Interfaces

    E-Print Network [OSTI]

    Walker, D. Greg

    Molecular Dynamics Simulation of Thin Films with Rough and Asymmetric Interfaces N.A. Roberts with the use of interfaces and shows that pristine, imperfect and asymmetric interfaces in thin films can interface whose features are of the order of the phonon wavelength. At a constant temperature difference

  20. Gravitational quantum states of neutrons in a rough waveguide A. E. Meyerovich

    E-Print Network [OSTI]

    Meyerovich, Alex

    of such states is indeed a major experimental challenge. What is more, the measure- ments in this energy range/absorber. The analysis is based on a recently developed theory of quantum transport along random rough walls which and are more efficient than the processes involving the intermediate states. The theoretical results

  1. Effect of surface roughness on magnetic domain wall thickness, domain size, and coercivity

    E-Print Network [OSTI]

    Wang, Gwo-Ching

    , Rensselaer Polytechnic Institute, Troy, New York 12180-3590 G. Palasantzas and J. Th. M. De Hosson Department nm thick deposited on plasma etched Si 100 substrates showed that, by increasing surface rough- ness nearly linearly with film thickness. Such an increase of the thickness fluctuations5 was attributed

  2. Large eddy simulations of surface roughness parameter sensitivity to canopy-structure characteristics

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

    Maurer, K. D.; Bohrer, G.; Ivanov, V. Y.

    2014-11-27

    Surface roughness parameters are at the core of every model representation of the coupling and interactions between land-surface and atmosphere, and are used in every model of surface fluxes. However, most models assume these parameters to be a fixed property of plant functional type and do not vary them in response to spatial or temporal changes to canopy structure. In part, this is due to the difficulty of reducing the complexity of canopy structure and its spatiotemporal dynamic and heterogeneity to less than a handful of parameters describing its effects of atmosphere–surface interactions. In this study we use large-eddy simulationsmore »to explore, in silico, the effects of canopy structure characteristics on surface roughness parameters. We performed a virtual experiment to test the sensitivity of resolved surface roughness to four axes of canopy structure: (1) leaf area index, (2) the vertical profile of leaf density, (3) canopy height, and (4) canopy gap fraction. We found roughness parameters to be highly variable, but were able to find positive relationships between displacement height and maximum canopy height, aerodynamic canopy height and maximum canopy height and leaf area index, and eddy-penetration depth and gap fraction. We also found negative relationships between aerodynamic canopy height and gap fraction, and between eddy-penetration depth and maximum canopy height and leaf area index. Using a decade of wind and canopy structure observations in a site in Michigan, we tested the effectiveness of our model-resolved parameters in predicting the frictional velocity over heterogeneous and disturbed canopies. We compared it with three other semi-empirical models and with a decade of meteorological observations. We found that parameterizations with fixed representations of roughness performed relatively well. Nonetheless, some empirical approaches that incorporate seasonal and inter-annual changes to the canopy structure performed even better than models with temporally fixed parameters.« less

  3. Big Entropy Fluctuations in Statistical Equilibrium: The Macroscopic Kinetics

    E-Print Network [OSTI]

    B. V. Chirikov; O. V. Zhirov

    2000-10-31

    Large entropy fluctuations in an equilibrium steady state of classical mechanics were studied in extensive numerical experiments on a simple 2--freedom strongly chaotic Hamiltonian model described by the modified Arnold cat map. The rise and fall of a large separated fluctuation was shown to be described by the (regular and stable) "macroscopic" kinetics both fast (ballistic) and slow (diffusive). We abandoned a vague problem of "appropriate" initial conditions by observing (in a long run)spontaneous birth and death of arbitrarily big fluctuations for any initial state of our dynamical model. Statistics of the infinite chain of fluctuations, reminiscent to the Poincar\\'e recurrences, was shown to be Poissonian. A simple empirical relation for the mean period between the fluctuations (Poincar\\'e "cycle") has been found and confirmed in numerical experiments. A new representation of the entropy via the variance of only a few trajectories ("particles") is proposed which greatly facilitates the computation, being at the same time fairly accurate for big fluctuations. The relation of our results to a long standing debates over statistical "irreversibility" and the "time arrow" is briefly discussed too.

  4. Primordial Lithium Abundance in Catalyzed Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Chris Bird; Kristen Koopmans; Maxim Pospelov

    2008-05-19

    There exists a well known problem with the Li7+Be7 abundance predicted by standard big bang nucleosynthesis being larger than the value observed in population II stars. The catalysis of big bang nucleosynthesis by metastable, \\tau_X \\ge 10^3 sec, charged particles X^- is capable of suppressing the primordial Li7+Be7, abundance and making it consistent with the observations. We show that to produce the correct abundance, this mechanism of suppression places a requirement on the initial abundance of X^- at temperatures of 4\\times 10^8 K to be on the order of or larger than 0.02 per baryon, which is within the natural range of abundances in models with metastable electroweak-scale particles. The suppression of Li7+Be7, is triggered by the formation of (Be7X^-), compound nuclei, with fast depletion of their abundances by catalyzed proton reactions, and in some models by direct capture of X^- on Be7. The combination of Li7+Be7 and Li6 constraints favours the window of lifetimes, 1000s \\la tau_X \\leq 2000 s.

  5. Wind assessment in complex terrain with the numeric model Aiolos implementation of the influence of roughness changes and stability

    E-Print Network [OSTI]

    Heinemann, Detlev

    to the influence of roughness changes and the thermal stratification. Wind potential assessments of two sites of roughness changes on the terrain surface and thermal stratification of the at- mosphere are taken a neutral thermal stratification situation is assumed. But for a north eu- ropean situation a light stable

  6. Carrots and Sticks: A Comprehensive Business Model for the Successful Achievement of Energy Efficiency Resource Standards Environmental Energy Technologies DivisionMarch 2011

    SciTech Connect (OSTI)

    Satchwell, Andrew; Cappers, Peter; Goldman, Charles

    2011-03-22

    Energy efficiency resource standards (EERS) are a prominent strategy to potentially achieve rapid and aggressive energy savings goals in the U.S. As of December 2010, twenty-six U.S. states had some form of an EERS with savings goals applicable to energy efficiency (EE) programs paid for by utility customers. The European Union has initiated a similar type of savings goal, the Energy End-use Efficiency and Energy Services Directive, where it is being implemented in some countries through direct partnership with regulated electric utilities. U.S. utilities face significant financial disincentives under traditional regulation which affects the interest of shareholders and managers in aggressively pursuing cost-effective energy efficiency. Regulators are considering some combination of mandated goals ('sticks') and alternative utility business model components ('carrots' such as performance incentives) to align the utility's business and financial interests with state and federal energy efficiency public policy goals. European countries that have directed their utilities to administer EE programs have generally relied on non-binding mandates and targets; in the U.S., most state regulators have increasingly viewed 'carrots' as a necessary condition for successful achievement of energy efficiency goals and targets. In this paper, we analyze the financial impacts of an EERS on a large electric utility in the State of Arizona using a pro-forma utility financial model, including impacts on utility earnings, customer bills and rates. We demonstrate how a viable business model can be designed to improve the business case while retaining sizable ratepayer benefits. Quantifying these concerns and identifying ways they can be addressed are crucial steps in gaining the support of major stakeholder groups - lessons that can apply to other countries looking to significantly increase savings targets that can be achieved from their own utility-administered EE programs.

  7. HoustonChronicle.com -Tiny honor a big deal for algae scientist HoustonChronicle.

    E-Print Network [OSTI]

    Jeong, Hae Jin

    HoustonChronicle.com - Tiny honor a big deal for algae scientist HoustonChronicle. com Section-mail this story June 18, 2005, 5:48PM Tiny honor a big deal for algae scientist By DAVID A. FAHRENTHOLD Washington Post Sometimes, algae can be the highest form of flattery. ADVERTISEMENTSo it was for Diane K. Stoecker

  8. Yale's Environment School Power Plants Big Influence in Regional Mercury Emissions Introduction Knowledge

    E-Print Network [OSTI]

    Lee, Xuhui

    Yale's Environment School · Power Plants Big Influence in Regional Mercury Emissions Introduction Power Plants Big Influence in Regional Mercury Emissions Related Topics: News Releases; Publications winters and a correspondent decrease in the need for regional power plants to burn coal could partially

  9. Beyond Myopic Inference in Big Data Pipelines Karthik Raman, Adith Swaminathan, Johannes Gehrke, Thorsten Joachims

    E-Print Network [OSTI]

    Joachims, Thorsten

    Beyond Myopic Inference in Big Data Pipelines Karthik Raman, Adith Swaminathan, Johannes Gehrke,adith,johannes,tj}@cs.cornell.edu ABSTRACT Big Data Pipelines decompose complex analyses of large data sets into a series of simpler tasks different pipelines. However, the interaction of independently tuned pipeline components yields poor end

  10. Why Statistics? POPULAR MEDIA AND SCIENCE PUBLICATIONS SOUND THE DRUM: "BIG DATA" WILL DRIVE OUR

    E-Print Network [OSTI]

    Capecchi, Mario R.

    Why Statistics? POPULAR MEDIA AND SCIENCE PUBLICATIONS SOUND THE DRUM: "BIG DATA" WILL DRIVE OUR isolates true associations with illnesses and deaths. Big Data payoffs can be enormous, but there are many of learning from data, and of measuring, controlling, and communicating uncertainty; and it thereby provides

  11. DEALING WITH DATA-POOR FISHERIES: A CASE STUDY OF THE BIG SKATE (RAJA BINOCULATA) IN

    E-Print Network [OSTI]

    DEALING WITH DATA-POOR FISHERIES: A CASE STUDY OF THE BIG SKATE (RAJA BINOCULATA) IN BRITISH: Master of Resource Management Project No.: 522 Title of Thesis: Dealing with data-poor fisheries: A case study of the big skate (Raja binoculata) in British Columbia's groundfish fishery Examining Committee

  12. Dr. Shih-Lung Shaw's Research on Space-Time GIS, Human Dynamics and Big Data

    E-Print Network [OSTI]

    Grissino-Mayer, Henri D.

    1 Dr. Shih-Lung Shaw's Research on Space-Time GIS, Human Dynamics and Big Data for Geography dynamics and big data. We have developed spatiotemporal data models, analysis functions, and visualization. In the meantime, detailed data of individual activities and interactions are being collected by vendors (e

  13. BIG DATA SYSTEMS AT THE ARM ARCHIVE I: INTERACTIVE VISUALIZATION OPPORTUNITIES

    E-Print Network [OSTI]

    BIG DATA SYSTEMS AT THE ARM ARCHIVE I: INTERACTIVE VISUALIZATION OPPORTUNITIES Giri Palanisamy, Oak instrumentation (e.g., scanning radars and lidars). As part of the "Big Data System" (BDS) design, the ARM Archive that will be dedicated to visualization and software development based on the very large data volumes from new ARM

  14. Geographically-Distributed Databases: A Big Data Technology for Production Analysis in the Oil & Gas Industry

    E-Print Network [OSTI]

    SPE 167844 Geographically-Distributed Databases: A Big Data Technology for Production Analysis advances in the scientific field of "big-data" to the world of Oil & Gas upstream industry. These off-of-the-start IT technologies currently employed in the data management of Oil & Gas production operations. Most current

  15. A Big World Inside Small-World Networks Zhihua Zhang, Jianzhi Zhang*

    E-Print Network [OSTI]

    Zhang, Jianzhi

    A Big World Inside Small-World Networks Zhihua Zhang, Jianzhi Zhang* Department of Ecology networks, including biological networks, are known to have the small-world property, characterized: Zhang Z, Zhang J (2009) A Big World Inside Small-World Networks. PLoS ONE 4(5): e5686. doi:10

  16. Frequent Itemset Mining for Big Data Sandy Moens, Emin Aksehirli and Bart Goethals

    E-Print Network [OSTI]

    Antwerpen, Universiteit

    Antwerpen, Belgium Email: firstname.lastname@uantwerpen.be Abstract--Frequent Itemset Mining (FIM) is oneFrequent Itemset Mining for Big Data Sandy Moens, Emin Aksehirli and Bart Goethals Universiteit new methods for mining large datasets: Dist-Eclat focuses on speed while BigFIM is optimized to run

  17. Big Bear Solar Observatory -New Jersey Institute of Technology 2005 Greetings

    E-Print Network [OSTI]

    Big Bear Solar Observatory - New Jersey Institute of Technology 2005 Greetings The Center for Solar-Terrestrial Reasearch (CSTR) at New Jersey Institute of Technology operates Big Bear Solar Observatory (BBSO), which provides a unique and precise measure of the Earth's reflectance (a critical climate parameter since

  18. Use and selection of highway bridges by Rafinesque’s big-eared bats in South Carolina

    E-Print Network [OSTI]

    Bennett, Frances M.

    2005-01-01

    s big-eared bats in South Carolina and also carried out anon all public roads in South Carolina. We surveyed 1,129s big-eared bats in the South Carolina Coastal Plain. Our

  19. Building Simulation Modelers are we big-data ready?

    SciTech Connect (OSTI)

    Sanyal, Jibonananda; New, Joshua Ryan

    2014-01-01

    Recent advances in computing and sensor technologies have pushed the amount of data we collect or generate to limits previously unheard of. Sub-minute resolution data from dozens of channels is becoming increasingly common and is expected to increase with the prevalence of non-intrusive load monitoring. Experts are running larger building simulation experiments and are faced with an increasingly complex data set to analyze and derive meaningful insight. This paper focuses on the data management challenges that building modeling experts may face in data collected from a large array of sensors, or generated from running a large number of building energy/performance simulations. The paper highlights the technical difficulties that were encountered and overcome in order to run 3.5 million EnergyPlus simulations on supercomputers and generating over 200 TBs of simulation output. This extreme case involved development of technologies and insights that will be beneficial to modelers in the immediate future. The paper discusses different database technologies (including relational databases, columnar storage, and schema-less Hadoop) in order to contrast the advantages and disadvantages of employing each for storage of EnergyPlus output. Scalability, analysis requirements, and the adaptability of these database technologies are discussed. Additionally, unique attributes of EnergyPlus output are highlighted which make data-entry non-trivial for multiple simulations. Practical experience regarding cost-effective strategies for big-data storage is provided. The paper also discusses network performance issues when transferring large amounts of data across a network to different computing devices. Practical issues involving lag, bandwidth, and methods for synchronizing or transferring logical portions of the data are presented. A cornerstone of big-data is its use for analytics; data is useless unless information can be meaningfully derived from it. In addition to technical aspects of managing big data, the paper details design of experiments in anticipation of large volumes of data. The cost of re-reading output into an analysis program is elaborated and analysis techniques that perform analysis in-situ with the simulations as they are run are discussed. The paper concludes with an example and elaboration of the tipping point where it becomes more expensive to store the output than re-running a set of simulations.

  20. Julia Gillard, Big Pharma, patent law and public health https://theconversation.edu.au/julia-gillard-big-pharma-patent-law-and-public-health-10226[28/11/2012 11:49:28 AM

    E-Print Network [OSTI]

    Botea, Adi

    Julia Gillard, Big Pharma, patent law and public health https://theconversation.edu.au/julia-gillard-big-pharma-patent Health + Medicine Politics + Society Science + Technology Julia Gillard, Big Pharma, patent law industry and their patents ­ and has launched several inquiries into patent law and pharmaceutical drugs

  1. Text-Alternative Version of Building America Webinar: Low-e Storms: The Next "Big Thing" in Window Retrofits

    Broader source: Energy.gov [DOE]

    Low-e Storms:  The Next “Big Thing” in Window RetrofitsOfficial Webinar Transcript (September 9, 2014)

  2. Surface roughness and interface width scaling of magnetron sputter deposited Ni/Ti multilayers

    SciTech Connect (OSTI)

    Maidul Haque, S.; Biswas, A.; Tokas, R. B.; Bhattacharyya, D.; Sahoo, N. K.; Bhattacharya, Debarati

    2013-09-14

    Using an indigenously built r.f. magnetron sputtering system, several single layer Ti and Ni films have been deposited at varying deposition conditions. All the samples have been characterized by Grazing Incidence X-ray Reflectivity (GIXR) and Atomic Force Microscopy to estimate their thickness, density, and roughness and a power law dependence of the surface roughness on the film thickness has been established. Subsequently, at optimized deposition condition of Ti and Ni, four Ni/Ti multilayers of 11-layer, 21-layer, 31-layer, and 51-layer having different bilayer thickness have been deposited. The multilayer samples have been characterized by GIXR and neutron reflectivity measurements and the experimental data have been fitted assuming an appropriate sample structure. A power law correlation between the interface width and bilayer thickness has been observed for the multilayer samples, which was explained in the light of alternate roughening/smoothening of multilayers and assuming that at the interface the growth “restarts” every time.

  3. Wetting Transitions of Condensed Droplets on Superhydrophobic Surfaces with Two-Tier Roughness

    E-Print Network [OSTI]

    Lv, Cunjing; Zhang, Xiwen; He, Feng

    2015-01-01

    Although realizing wetting transitions of droplets spontaneously on solid rough surfaces is quite challenging, it is becoming a key research topic in many practical applications which require highly efficient removal of liquid. We report wetting transitions of condensed droplets occurring spontaneously on pillared surfaces with two-tier roughness owing to excellent superhydrophobicity. The phenomenon results from further decreased Laplace pressure on the top side of the individual droplet when its size becomes comparable to the scale of the micropillars, which leads to a surprising robust spontaneous wetting transition, from valleys to tops of the pillars. A simple scaling law is derived theoretically, which demonstrates that the critical size of the droplet is determined by the space of the micropillars. For this reason, highly efficient removal of water benefits greatly from smaller micropillar space. Furthermore, three wetting transition modes exist, in which the in situ wetting behaviors are in good agree...

  4. Interfacial Friction in Gas-Liquid Annular Flow: Analogies to Full and Transition Roughness

    SciTech Connect (OSTI)

    Bauer, R.C.; Beus, S.G.; Fore, L.B.

    1999-03-01

    New film thickness and pressure gradient data were obtained in a 5.08 by 101.6 mm duct for nitrogen and water in annular flow. Pressures of 3.4 and 17 atm and temperatures of 38 and 93 C were used to vary the gas density and liquid viscosity. These data are used to compute interfacial shear stresses and interfacial friction factors for comparison with several accepted literature correlations. These comparisons are reasonable for small values of the relative film thickness. However, the new data cover conditions not approached by the data used to construct those correlations. By combining the current data with the results of two other comprehensive modern experimental studies, a new correlation for the interfacial friction factor has been developed. This correlation adds elements of transition roughness to Wallis' fully-rough analogy to better predict interfacial friction factors over a wide range of gas Reynolds numbers and liquid film thicknesses.

  5. Electrochemical machining process for forming surface roughness elements on a gas turbine shroud

    DOE Patents [OSTI]

    Lee, Ching-Pang (Cincinnati, OH); Johnson, Robert Alan (Simpsonville, SC); Wei, Bin (Mechanicville, NY); Wang, Hsin-Pang (Rexford, NY)

    2002-01-01

    The back side recessed cooling surface of a shroud defining in part the hot gas path of a turbine is electrochemically machined to provide surface roughness elements and spaces therebetween to increase the heat transfer coefficient. To accomplish this, an electrode with insulating dielectric portions and non-insulating portions is disposed in opposition to the cooling surface. By passing an electrolyte between the cooling surface and electrode and applying an electrical current between the electrode and a shroud, roughness elements and spaces therebetween are formed in the cooling surface in opposition to the insulating and non-insulating portions of the electrode, hence increasing the surface area and heat transfer coefficient of the shroud.

  6. Anti-Proton Evolution in Little Bangs and Big Bang

    E-Print Network [OSTI]

    H. Schade; B. Kampfer

    2009-03-30

    The abundances of anti-protons and protons are considered within momentum-integrated Boltzmann equations describing Little Bangs, i.e., fireballs created in relativistic heavy-ion collisions. Despite of a large anti-proton annihilation cross section we find a small drop of the ratio of anti-protons to protons from 170 MeV (chemical freeze-out temperature) till 100 MeV (kinetic freeze-out temperature) for CERN-SPS and BNL-RHIC energies thus corroborating the solution of the previously exposed "ani-proton puzzle". In contrast, the Big Bang evolves so slowly that the anti-baryons are kept for a long time in equilibrium resulting in an exceedingly small fraction. The adiabatic path of cosmic matter in the phase diagram of strongly interacting matter is mapped out.

  7. Dark/visible parallel universes and Big Bang nucleosynthesis

    SciTech Connect (OSTI)

    Bertulani, C. A.; Frederico, T.; Fuqua, J.; Hussein, M. S.; Oliveira, O.; Paula, W. de [Department of Physics and Astronomy, Texas A and M University-Commerce, Commerce TX 75429 (United States); Departamento de Fisica, Instituto Tecnologico de Aeronautica, DCTA 12.228-900, Sao Jose dos Campos, SP (Brazil); Department of Physics and Astronomy, Texas A and M University-Commerce, Commerce TX 75429 (United States); Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05314-970 Sao Paulo, SP (Brazil); Departamento de Fisica, Instituto Tecnologico de Aeronautica, DCTA 12.228-900, Sao Jose dos Campos, SP, Brazil and Departamento de Fisica, Universidade de Coimbra, 3004-516 Coimbra (Portugal); Departamento de Fisica, Instituto Tecnologico de Aeronautica, DCTA 12.228-900, Sao Jose dos Campos, SP (Brazil)

    2012-11-20

    We develop a model for visible matter-dark matter interaction based on the exchange of a massive gray boson called herein the Mulato. Our model hinges on the assumption that all known particles in the visible matter have their counterparts in the dark matter. We postulate six families of particles five of which are dark. This leads to the unavoidable postulation of six parallel worlds, the visible one and five invisible worlds. A close study of big bang nucleosynthesis (BBN), baryon asymmetries, cosmic microwave background (CMB) bounds, galaxy dynamics, together with the Standard Model assumptions, help us to set a limit on the mass and width of the new gauge boson. Modification of the statistics underlying the kinetic energy distribution of particles during the BBN is also discussed. The changes in reaction rates during the BBN due to a departure from the Debye-Hueckel electron screening model is also investigated.

  8. Big bang nucleosynthesis revisited via Trojan Horse method measurements

    SciTech Connect (OSTI)

    Pizzone, R. G.; Spartá, R.; Spitaleri, C.; La Cognata, M.; Tumino, A. [INFN—Laboratori Nazionali del Sud, Via Santa Sofia 62, I-95123 Catania (Italy); Bertulani, C. A.; Lalmansingh, J. [Department of Physics and Astronomy, Texas A and M University, Commerce, TX 75025 (United States); Lamia, L. [Dipartimento di Fisica e Astronomia, Università degli Studi di Catania, Via Santa Sofia 64, I-95123 Catania (Italy); Mukhamedzhanov, A., E-mail: rgpizzone@lns.infn.it [Cyclotron Institute, Texas A and M University, College Station, TX 77843 (United States)

    2014-05-10

    Nuclear reaction rates are among the most important input for understanding primordial nucleosynthesis and, therefore, for a quantitative description of the early universe. An up-to-date compilation of direct cross-sections of {sup 2}H(d, p){sup 3}H, {sup 2}H(d, n){sup 3}He, {sup 7}Li(p, ?){sup 4}He, and {sup 3}He(d, p){sup 4}He reactions is given. These are among the most uncertain cross-sections used and input for big bang nucleosynthesis calculations. Their measurements through the Trojan Horse method are also reviewed and compared with direct data. The reaction rates and the corresponding recommended errors in this work were used as input for primordial nucleosynthesis calculations to evaluate their impact on the {sup 2}H, {sup 3,4}He, and {sup 7}Li primordial abundances, which are then compared with observations.

  9. Big Bang Nucleosynthesis with Independent Neutrino Distribution Functions

    E-Print Network [OSTI]

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

    2008-12-06

    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.

  10. Big Data Visual Analytics for Exploratory Earth System Simulation Analysis

    SciTech Connect (OSTI)

    Steed, Chad A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Ricciuto, Daniel M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Shipman, Galen M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Smith, Brian E. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Thornton, Peter E. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Wang, Dali [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Shi, Xiaoying [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Williams, Dean N. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2013-12-01

    Rapid increases in high performance computing are feeding the development of larger and more complex data sets in climate research, which sets the stage for so-called big data analysis challenges. However, conventional climate analysis techniques are inadequate in dealing with the complexities of today s data. In this paper, we describe and demonstrate a visual analytics system, called the Exploratory Data analysis ENvironment (EDEN), with specific application to the analysis of complex earth system simulation data sets. EDEN represents the type of interactive visual analysis tools that are necessary to transform data into insight, thereby improving critical comprehension of earth system processes. In addition to providing an overview of EDEN, we describe real-world studies using both point ensembles and global Community Land Model Version 4 (CLM4) simulations.

  11. Design of a telescope pointing and tracking subsystem for the Big Bear Solar Observatory New Solar Telescope

    E-Print Network [OSTI]

    Design of a telescope pointing and tracking subsystem for the Big Bear Solar Observatory New Solar Telescope J. R. Varsika and G.Yangb aBig Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, California, U.S.A.; bNew Jersey Institute of Technology, Newark, New Jersey, U.S.A. ABSTRACT The New Solar

  12. IEEE COMPUTATIONAL INTELLIGENCE MAGAZINE, VOL. XX, NO. X, XXXX 20XX 1 Big Data Opportunities and Challenges

    E-Print Network [OSTI]

    Jin, Yaochu

    IEEE COMPUTATIONAL INTELLIGENCE MAGAZINE, VOL. XX, NO. X, XXXX 20XX 1 Big Data Opportunities, and Graham J. Williams Abstract--"Big Data" as a term has been among the biggest trends of the last three and perspectives of the authors relating to the new opportunities and challenges brought forth by the big data

  13. Plantage Muidergracht 12 | 020 525 4330 | admissions-mbabd@uva.nl mba-bigdata.nl MBA Big Data & Business Analytics

    E-Print Network [OSTI]

    Koolen, Marijn

    Plantage Muidergracht 12 | 020 525 4330 | admissions-mbabd@uva.nl mba-bigdata.nl MBA Big Data & Business Analytics To work in Big Data or Business Analytics requires strong multi-disciplinary skills of this MBA is specifically designed to develop students into knowledgeable Big Data experts, both able to do

  14. Introduction to Big Data and High-Performance Computing Lecture 9:30 a.m., Tuesday

    E-Print Network [OSTI]

    Rhode Island, University of

    Introduction to Big Data and High-Performance Computing Lecture ­ 9:30 a.m., Tuesday Labs ­ 10:00 a capacity is set to 25 students. In order to best serve students with Big Data and HPC interests and needs Big Data. This need can be in any discipline (science, engineering, computer science, mathematics

  15. Standard big bang nucleosynthesis and primordial CNO abundances after Planck

    SciTech Connect (OSTI)

    Coc, Alain [Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), CNRS/IN2P3, Université Paris Sud 11, UMR 8609, Bâtiment 104, F–91405 Orsay Campus (France); Uzan, Jean-Philippe; Vangioni, Elisabeth, E-mail: coc@csnsm.in2p3.fr, E-mail: uzan@iap.fr, E-mail: vangioni@iap.fr [Institut d'Astrophysique de Paris, UMR-7095 du CNRS, Université Pierre et Marie Curie, 98 bis bd Arago, 75014 Paris (France)

    2014-10-01

    Primordial or big bang nucleosynthesis (BBN) is one of the three historical strong evidences for the big bang model. The recent results by the Planck satellite mission have slightly changed the estimate of the baryonic density compared to the previous WMAP analysis. This article updates the BBN predictions for the light elements using the cosmological parameters determined by Planck, as well as an improvement of the nuclear network and new spectroscopic observations. There is a slight lowering of the primordial Li/H abundance, however, this lithium value still remains typically 3 times larger than its observed spectroscopic abundance in halo stars of the Galaxy. According to the importance of this ''lithium problem{sup ,} we trace the small changes in its BBN calculated abundance following updates of the baryonic density, neutron lifetime and networks. In addition, for the first time, we provide confidence limits for the production of {sup 6}Li, {sup 9}Be, {sup 11}B and CNO, resulting from our extensive Monte Carlo calculation with our extended network. A specific focus is cast on CNO primordial production. Considering uncertainties on the nuclear rates around the CNO formation, we obtain CNO/H ? (5-30)×10{sup -15}. We further improve this estimate by analyzing correlations between yields and reaction rates and identified new influential reaction rates. These uncertain rates, if simultaneously varied could lead to a significant increase of CNO production: CNO/H?10{sup -13}. This result is important for the study of population III star formation during the dark ages.

  16. Energy production rates in fluid mixtures of inelastic rough hard spheres

    E-Print Network [OSTI]

    Andrés Santos; Gilberto M. Kremer; Vicente Garzó

    2010-07-16

    The aim of this work is to explore the combined effect of polydispersity and roughness on the partial energy production rates and on the total cooling rate of a granular fluid mixture. We consider a mixture of inelastic rough hard spheres of different number densities, masses, diameters, moments of inertia, and mutual coefficients of normal and tangential restitution. Starting from the first equation of the BBGKY hierarchy, the collisional energy production rates associated with the translational and rotational temperatures ($T_i^\\text{tr}$ and $T_i^\\text{rot}$) are expressed in terms of two-body average values. Next, those average values are estimated by assuming a velocity distribution function based on maximum-entropy arguments, allowing us to express the energy production rates and the total cooling rate in terms of the partial temperatures and the parameters of the mixture. Finally, the results are applied to the homogeneous cooling state of a binary mixture and the influence of inelasticity and roughness on the temperature ratios $T_1^\\text{tr}/T_1^\\text{rot}$, $T_2^\\text{tr}/T_1^\\text{tr}$, and $T_2^\\text{rot}/T_1^\\text{rot}$ is analyzed.

  17. Molecular Dynamics Simulation Study of Interaction between Model Rough Hydrophobic Surfaces

    E-Print Network [OSTI]

    Changsun Eun; Max L. Berkowitz

    2011-06-01

    We study some aspects of hydrophobic interaction between molecular rough and flexible model surfaces. The model we use in this work is based on a model we used previously (Eun, C.; Berkowitz, M. L. J. Phys. Chem. B 2009, 113, 13222-13228), when we studied the interaction between model patches of lipid membranes. Our original model consisted of two graphene plates with attached polar headgroups; the plates were immersed in a water bath. The interaction between such plates can be considered as an example of a hydrophilic interaction. In the present work we modify our previous model by removing the charge from the zwitterionic headgroups. As a result of this procedure, the plate character changes; it becomes hydrophobic. By separating the total interaction (or potential of mean force, PMF) between plates into the direct and the water-mediated interactions we observe that the latter changes from repulsive to attractive, clearly emphasizing the important role of water as a medium. We also investigate the effect of roughness and flexibility of the headgroups on the interaction between plates and observe that roughness enhances the character of the hydrophobic interaction. The presence of a dewetting transition in a confined space between charge-removed plates confirms that the interaction between plates is strongly hydrophobic. In addition, we notice that there is a shallow local minimum in the PMF in case of charge-removed plates. We find that this minimum is associated with the configurational changes that flexible headgroups undergo, as the two plates are brought together.

  18. The Effect of Excimer Laser Treatment on the Surface Roughness and Fracture Strength of Alumina Substrates

    SciTech Connect (OSTI)

    Smoot, J.E.

    1998-05-13

    The microelectronics industry requires alumina substrates with exceptionally smooth surfaces and few surface defects to allow successful deposition of metallic films for reliable electronic performance. Irradiation by a 248-nm wavelength excimer laser beam (KrF) at a fluence of 125 mJ/mm{sup 2} and at various angles of incidence is shown to significantly reduce the surface roughness of alumina substrates. However, irradiation also creates a fine particulate deposit of alumina that only partially adheres to the substrate and impedes deposition of metal films. Annealing in air between 1350 C and 1450 C was found to remove the particles by sintering. As-received material showed surface roughness average (R{sub a}) mean values of 457 nm, which was reduced to 60 nm (mean) following irradiation and 71 nm (mean) following irradiation and annealing at 1350 C. Irradiation also produced a decrease in the number and severity of surface defects. The flexural strength and Weibull modulus were both increased by laser irradiation and thermal treatment. Flexural strength went from an as-received value of 450 MPa to 560 MPa following irradiation/sintering, measured at 10% probability of failure. The Weibull modulus was increased from the as-received value of about 9, to about 13 following irradiation/sintering. It was concluded that irradiation at an angle of incidence of 60{degree} from perpendicular was most effective in producing a low surface roughness.

  19. Lamellar Diblock Copolymers on Rough Substrates: Self-consistent Field Theory Studies

    E-Print Network [OSTI]

    Xingkun Man; Jiuzhou Tang; Pan Zhou; Dadong Yan; David Andelman

    2015-08-18

    We present numerical calculations of lamellar phases of di-block copolymers (BCP) confined between two surfaces, where the top surface is flat and the bottom one is corrugated. The corrugated substrate is assumed to have a single $q$-mode of lateral undulations with a wavenumber q_s and amplitude R. We focus on the effects of substrate roughness, parameterized by the dimensionless quantity, q_sR, on the relative stability between parallel and perpendicular orientations of the lamellar phase. The competition between film confinement, energy cost of elastic deformation and gain in surface energy induces a parallel-to-perpendicular transition of the BCP lamellae. Employing self-consistent field theory (SCFT), we study the critical substrate roughness value corresponding to this transition. The critical value increases as function of the surface preference towards one of the two BCP components, and as function of film thickness. But, it decreases with increasing values of the Flory-Huggins parameter. Our findings are equivalent to stating that the critical value decreases as the BCP molecular weight or the natural BCP periodicity increases. We further show that the rough substrate can overcome the formation of parallel lamellae in cases where the top surface has a preference towards one of the two BCP components. Our results are in good agreement with previous experiments, and highlight the physical conditions behind the perpendicular orientation of lamellar phases, as is desired in nanolithography and other industrial applications.

  20. Effect of the porosity on the fracture surface roughness of sintered materials: From anisotropic to isotropic self-affine scaling

    E-Print Network [OSTI]

    Tristan Cambonie; Jonathan Bares; Lamine Hattali; Daniel Bonamy; Véronique Lazarus; Harold Auradou

    2015-01-16

    To unravel how the microstructure affects the fracture surface roughness in heterogeneous brittle solids like rocks or ceramics, we characterized the roughness statistics of post-mortem fracture surfaces in home-made materials of adjustable microstructure length-scale and porosity, obtained by sintering monodisperse polystyrene beads. Beyond the characteristic size of disorder, the roughness profiles are found to exhibit self-affine scaling features evolving with porosity. Starting from a null value and increasing the porosity, we quantitatively modify the self-affine scaling properties from anisotropic (at low porosity) to isotropic (for porosity larger than 10 %).

  1. Big Data Is not just a New Type, but a New Paradigm

    E-Print Network [OSTI]

    Jiang, Bin

    2015-01-01

    This paper is a first draft of the introduction to the special issue on volunteered geographic information published in Computers, Environment and Urban Systems (2015, 53, 1-122). In this short paper, I put georeferenced big data (hereafter, big data) such as tweets locations in comparison with small data such as census data in terms of data characteristics, and further argued that big data differs fundamentally from small data in terms of data analytics, both geometrially and statistically. I would like to thank my colleague Dr. Jean-Claude Thill, who expanded the draft towards a broader scope.

  2. Single-layer MoS{sub 2} roughness and sliding friction quenching by interaction with atomically flat substrates

    SciTech Connect (OSTI)

    Quereda, J.; Castellanos-Gomez, A.; Agraït, N.; Rubio-Bollinger, G.

    2014-08-04

    We experimentally study the surface roughness and the lateral friction force in single-layer MoS{sub 2} crystals deposited on different substrates: SiO{sub 2}, mica, and hexagonal boron nitride (h-BN). Roughness and sliding friction measurements are performed by atomic force microscopy. We find a strong dependence of the MoS{sub 2} roughness on the underlying substrate material, being h-BN the substrate which better preserves the flatness of the MoS{sub 2} crystal. The lateral friction also lowers as the roughness decreases, and attains its lowest value for MoS{sub 2} flakes on h-BN substrates. However, it is still higher than for the surface of a bulk MoS{sub 2} crystal, which we attribute to the deformation of the flake due to competing tip-to-flake and flake-to-substrate interactions.

  3. Rough contact mechanics for graded bulk rheology: The role of small-scale wavelengths on rubber friction

    E-Print Network [OSTI]

    Michele Scaraggi; Davide Comingio

    2015-10-13

    We present a numerical model for the prediction of the rough contact mechanics of a viscoelastic block, with graded rheology, in steady sliding contact with a randomly rough rigid surface. In particular, we derive the effective surface response of a stepwise or continuously-graded block in the Fourier domain, which is then embedded in a Fourier-based residuals molecular dynamic formulation of the contact mechanics. Finally we discuss on the role of small-scale wavelengths on rubber friction and contact area, and we demonstrate that the rough contact mechanics exhibits effective interface properties which converge to asymptotes upon increase of the small-scale roughness content, when a realistic rheology of the confinement is taken into account.

  4. MEMS-based contact stress field measurements at a rough elastomeric layer: local test of Amontons' friction law in static

    E-Print Network [OSTI]

    Adda-Bedia, Mokhtar

    MEMS-based contact stress field measurements at a rough elastomeric layer: local test of Amontons/Universit´e Paris 6, Paris, France Abstract. We present the results of recent friction experiments in which a MEMS

  5. Effects of grit roughness and pitch oscillations on the S814 airfoil

    SciTech Connect (OSTI)

    Janiszewska, J.M.; Ramsay, R.R.; Hoffmann, M.J.; Gregorek, G.M. [Ohio State Univ., Columbus, OH (United States)

    1996-07-01

    Horizontal-axis wind turbine rotors experience unsteady aerodynamics when the rotor is yawed, when rotor blades pass through the support tower wake, and when the wind is gusting. An understanding of this unsteady behavior is necessary to assist in the design of new rotor airfoils. The rotors also experience performance degradation due to surface roughness. These surface irregularities are due to the accumulation of insect debris, ice, and/or the aging process. Wind tunnel studies that examine both the steady and unsteady behavior of airfoils can help define pertinent flow phenomena, and the resultant data can also be used to validate analytical computer codes. An S814 airfoil model was tested in The Ohio State University Aeronautical and Astronautical Research Laboratory (OSU/AARL) 3 X 5 subsonic wind tunnel (3 X 5) under steady flow with both stationary model conditions and pitch oscillations. To study the extent of performance loss due to surface roughness, a leading edge grit roughness pattern (LEGR) was used to simulate leading edge contamination. After baseline cases were completed, the LEGR was applied for both steady state and model pitch oscillation cases. The Reynolds numbers for steady state conditions were 0.75, 1, 1.25 and 1.5 million, while the angle of attack ranged from -20{degrees} to +40{degrees}. While the model underwent pitch oscillations, data were acquired at Reynolds numbers of 0.75, 1, 1.25, and 1.5 million, at frequencies of 0.6, 1.2, and 1.8 Hz. Two sine wave forcing functions {+-}5.5{degrees} and {+-}10{degrees}, were used; at mean angles of attack of 8{degrees}, 14{degrees}, and 20{degrees}. For purposes herein, any reference to unsteady conditions means the model was in pitch oscillation.

  6. EFFECTS OF GRAPHITE SURFACE ROUGHNESS ON BYPASS FLOW COMPUTATIONS FOR AN HTGR

    SciTech Connect (OSTI)

    Rich Johnson; Yu-Hsin Tung; Hiroyuki Sato

    2011-07-01

    Bypass flow in a prismatic high temperature gas reactor (HTGR) occurs between graphite blocks as they sit side by side in the core. Bypass flow is not intentionally designed to occur in the reactor, but is present because of tolerances in manufacture, imperfect installation and expansion and shrinkage of the blocks from heating and irradiation. It is desired to increase the knowledge of the effects of such flow, which has been estimated to be as much as 20% of the total helium coolant flow. Computational fluid dynamic (CFD) simulations can provide estimates of the scale and impacts of bypass flow. Previous CFD calculations have examined the effects of bypass gap width, level and distribution of heat generation and effects of shrinkage. The present contribution examines the effects of graphite surface roughness on the bypass flow for different relative roughness factors on three gap widths. Such calculations should be validated using specific bypass flow measurements. While such experiments are currently underway for the specific reference prismatic HTGR design for the next generation nuclear plant (NGNP) program of the U. S. Dept. of Energy, the data are not yet available. To enhance confidence in the present calculations, wall shear stress and heat transfer results for several turbulence models and their associated wall treatments are first compared for flow in a single tube that is representative of a coolant channel in the prismatic HTGR core. The results are compared to published correlations for wall shear stress and Nusselt number in turbulent pipe flow. Turbulence models that perform well are then used to make bypass flow calculations in a symmetric onetwelfth sector of a prismatic block that includes bypass flow. The comparison of shear stress and Nusselt number results with published correlations constitutes a partial validation of the CFD model. Calculations are also compared to ones made previously using a different CFD code. Results indicate that increasing surface roughness increases the maximum fuel and helium temperatures as do increases in gap width. However, maximum coolant temperature variation due to increased gap width is not changed by surface roughness.

  7. EM Wins Awards for Taking Big Steps to Reduce DOE’s Electronics Footprint

    Broader source: Energy.gov [DOE]

    WASHINGTON, D.C. – EM is talking big steps to reduce its electronics footprint with exceptional results. EM sites won the majority of awards given to DOE for their outstanding performance in the 2012 Federal Electronics Challenge (FEC).

  8. >> Home >> World News Michael Richardson: Win for France over fusion reactor a big blow to Japan

    E-Print Network [OSTI]

    World News >> Home >> World News Michael Richardson: Win for France over fusion reactor a big blow source of energy, heat and light. Some scientists say fusion is the best option for abundant

  9. The Decay of the Neutron or Beta Decay, the Big Bang, and the...

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

    Decay of the Neutron or Beta Decay, the Big Bang, and the Left-Handed Universe Apr 03 2014 01:00 PM - 02:30 PM Geoffrey L. Greene Physics Division, ORNL Research Accelerator...

  10. The Influence of Big Donors on Congressional Behavior and Electoral Prospects 

    E-Print Network [OSTI]

    Socker, Erica Marie

    2013-11-18

    on their roll call voting, bill sponsorship and primary election prospects. The results suggest big donors shift members further to the ideological right and decrease their likelihood of introducing direct government spending bills in Congress. These financial...

  11. Data-aware distributed scientific computing for big-data problems...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Data-aware distributed scientific computing for big-data problems in bio-surveillance Citation Details In-Document Search Title: Data-aware distributed scientific...

  12. A Flexible Approach to Big Data at the APS | Argonne National...

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

    A Flexible Approach to Big Data at the APS November 23, 2015 11:00AM to 12:00PM Presenter Ray Osborn (MSD), Senior Physicist Location Building 401, Room A1100 Type Seminar Series...

  13. Big Data-Driven Marketing: How Machine Learning Outperforms Marketers’ Gut-Feeling

    E-Print Network [OSTI]

    Sundsøy, Pål

    2014-01-01

    This paper shows how big data can be experimentally used at large scale for marketing purposes at a mobile network operator. We present results from a large-scale experiment in a MNO in Asia where we use machine learning ...

  14. Big Data for Disease Control: Interdisciplinary approaches to data linkage and management 

    E-Print Network [OSTI]

    Lee, Shona Jane

    2014-08-26

    The source of tremendous promise and unsettling surveillance alike, the term ‘Big Data’ has attracted substantial public attention in recent years, garnering widespread press coverage and debate in equal measure. In reality it is like any other...

  15. Making Big Data Useful for Health Care: A Summary of the Inaugural MIT Critical Data Conference

    E-Print Network [OSTI]

    Badawi, Omar

    With growing concerns that big data will only augment the problem of unreliable research, the Laboratory of Computational Physiology at the Massachusetts Institute of Technology organized the Critical Data Conference in ...

  16. Research Positions in Big Data Computational Biology Department of Computational and Systems Biology

    E-Print Network [OSTI]

    Benos, Takis

    Research Positions in Big Data Computational Biology Department of Computational and clinical data related to melanoma and chronic lung diseases. The ideal, and will have research experience in computational biology. 2. One Data Scientist

  17. Big Data around UW-Madison Brian S. Yandell,UW-Madison

    E-Print Network [OSTI]

    Yandell, Brian S.

    (1995 Silicon Snake Oil) PBS NOVA (1990) "The KGB, the Computer, and Me" #12;What is (are) big data and networks · Spatial/temporal ­ images at all scales, static and dynamic ­ geospatial alliance, biomedical

  18. The 3rd Annual International TCE Conference Machine Learning & Big Data

    E-Print Network [OSTI]

    Schuster, Assaf

    The 3rd Annual International TCE Conference Machine Learning & Big Data Call for Presentations Industry Track at the International TCE Conference in Haifa The 3rd annual International TCE Conference

  19. SPECTROSCOPIC DIAGNOSTICS OF DISK ACCRETION IN HER BIG AE/BE STARS

    E-Print Network [OSTI]

    Hillenbrand, Lynne

    1 SPECTROSCOPIC DIAGNOSTICS OF DISK ACCRETION IN HER­ BIG AE/BE STARS L. GHANDOUR, S. STROM, S). In this contribution, we present preliminary results using new spectroscopic data to explore whether the last three

  20. Vascular Plant Survey of the Canyonlands Unit of the Big Thicket National Preserve, Tyler County, Texas 

    E-Print Network [OSTI]

    Haile, Kelly

    2012-10-19

    The Big Thicket National Preserve is located in the southern part of the United States. It is within the Pineywoods vegetation region of southeastern Texas. This study area was the Canyonlands Unit, a unit located entirely ...

  1. The relationship of social desirability responding and the Big Five: an investigation using confirmatory factor analysis 

    E-Print Network [OSTI]

    Carlisle, Todd Dana

    2000-01-01

    The relationship between social desirability responding (SDR) and the Big Five factors of personality was both summarized with a review of past and current studies and directly investigated using a series of confirmatory ...

  2. Inhomogeneous big bang nucleosynthesis with late-decaying massive particles

    E-Print Network [OSTI]

    J. Lopez-Suarez; R. Canal

    1998-04-22

    We investigate the possibility of accounting for the currently inferred primordial abundances of D, 3He, 4He, and 7Li by big bang nucleosynthesis in the presence of baryon density inhomogeneities plus the effects of late-decaying massive particles (X), and we explore the allowed range of baryonic fraction of the closure density Omega_b in such context. We find that, depending on the parameters of this composite model (characteristic size and density contrast of the inhomogeneities; mass-density, lifetime, and effective baryon number in the decay of the X-particles), values as high as \\Omega_{b}h_{50}^{2}\\simeq 0.25-0.35 could be compatible with the primordial abundances of the light nuclides. We include diffusion of neutrons and protons at all stages, and we consider the contribution of the X particles to the energy density, the entropy production by their decay, the possibility that the X-products could photodissociate the light nuclei produced during the previous stages of nucleosynthesis, and also the possibility that the decay products of the X-particles would include a substantial fraction of hadrons. Specific predictions for the primordial abundance of Be are made.

  3. Big Bang Day : Afternoon Play - Torchwood: Lost Souls

    ScienceCinema (OSTI)

    None

    2011-04-25

    Martha Jones, ex-time traveller and now working as a doctor for a UN task force, has been called to CERN where they're about to activate the Large Hadron Collider. Once activated, the Collider will fire beams of protons together recreating conditions a billionth of a second after the Big Bang - and potentially allowing the human race a greater insight into what the Universe is made of. But so much could go wrong - it could open a gateway to a parallel dimension, or create a black hole - and now voices from the past are calling out to people and scientists have started to disappear... Where have the missing scientists gone? What is the secret of the glowing man? What is lurking in the underground tunnel? And do the dead ever really stay dead? Lost Souls is a spin-off from the award-winning BBC Wales TV production Torchwood. It stars John Barrowman, Freema Agyeman, Eve Myles, Gareth David-Lloyd, Lucy Montgomery (of Titty Bang Bang) and Stephen Critchlow.

  4. Dark Radiation from Particle Decays during Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Menestrina, Justin L

    2011-01-01

    Cosmic microwave background (CMB) observations suggest the possibility of an extra dark radiation component, while the current evidence from big bang nucleosynthesis (BBN) is more ambiguous. Dark radiation from a decaying particle can affect these two processes differently. Early decays add an additional radiation component to both the CMB and BBN, while late decays can alter the radiation content seen in the CMB while having a negligible effect on BBN. Here we quantify this difference and explore the intermediate regime by examining particles decaying during BBN, i.e., particle lifetimes \\tau_X satisfying 0.1 sec 1000 sec), \\Delta N_{BBN} is dominated by the energy density of the nonrelativistic particles before they decay, so that \\Delta N_{BBN} remains nonzero and becomes independent of the particle lifetime. By varying both the particle energy density and lifetime, one can obtain any desired combination of \\Delta N_{BBN} and \\Delta N_{CMB}, subject to the constraint that \\Delta N_{CMB} >= \\Delta N_{BBN}.

  5. The NACRE Thermonuclear Reaction Compilation and Big Bang Nucleosynthesis

    E-Print Network [OSTI]

    Richard H. Cyburt; Brian D. Fields; Keith A. Olive

    2001-05-17

    The theoretical predictions of big bang nucleosynthesis (BBN) are dominated by uncertainties in the input nuclear reaction cross sections. In this paper, we examine the impact on BBN of the recent compilation of nuclear data and thermonuclear reactions rates by the NACRE collaboration. We confirm that the adopted rates do not make large overall changes in central values of predictions, but do affect the magnitude of the uncertainties in these predictions. Therefore, we then examine in detail the uncertainties in the individual reaction rates considered by NACRE. When the error estimates by NACRE are treated as 1\\sigma limits, the resulting BBN error budget is similar to those of previous tabulations. We propose two new procedures for deriving reaction rate uncertainties from the nuclear data: one which sets lower limits to the error, and one which we believe is a reasonable description of the present error budget. We propagate these uncertainty estimates through the BBN code, and find that when the nuclear data errors are described most accurately, the resulting light element uncertainties are notably smaller than in some previous tabulations, but larger than others. Using these results, we derive limits on the cosmic baryon-to-photon ratio $\\eta$, and compare this to independent limits on $\\eta$ from recent balloon-borne measurements of the cosmic microwave background radiation (CMB). We discuss means to improve the BBN results via key nuclear reaction measurements and light element observations.

  6. Baghouse Slipstream Testing at TXU's Big Brown Station

    SciTech Connect (OSTI)

    John Pavlish; Jason Laumb; Robert Jensen; Jeffery Thompson; Christopher Martin; Mark Musich; Brandon Pavlish; Stanley Miller; Lucinda Hamre

    2007-04-30

    Performing sorbent testing for mercury control at a large scale is a very expensive endeavor and requires months of planning and careful execution. Even with good planning, there are plant limitations on what operating/design parameters can be varied/tested and when. For parameters that cannot be feasibly tested at the full scale (lower/higher gas flow, different bag material, cleaning methods, sorbents, etc.), an alternative approach is used to perform tests on a slipstream unit using flue gas from the plant. The advantage that a slipstream unit provides is the flexibility to test multiple operating and design parameters and other possible technology options without risking major disruption to the operation of the power plant. Additionally, the results generated are expected to simulate full-scale conditions closely, since the flue gas used during the tests comes directly from the plant in question. The Energy & Environmental Research Center developed and constructed a mobile baghouse that allows for cost-effective testing of impacts related to variation in operating and design parameters, as well as other possible mercury control options. Multiple sorbents, air-to-cloth ratios, bag materials, and cleaning frequencies were evaluated while flue gas was extracted from Big Brown when it fired a 70% Texas lignite-30% Powder River Basin (PRB) blend and a 100% PRB coal.

  7. Constraint on slepton intergenerational mixing from big-bang nucleosynthesis

    SciTech Connect (OSTI)

    Kohri, Kazunori; Ohta, Shingo; Sato, Joe; Shimomura, Takashi; Yamanaka, Masato [Theory Center, Institute of Particle and Nuclear Studies, KEK (High Energy Accelerator Research Organization), 1-1 Oho, Tsukuba 305-0801 (Japan); Department of Physics, Saitama University, Shimo-okubo, Sakura-ku, Saitama, 338-8570 (Japan); Department of Physics, Niigata University, Niigata, 950-8502 (Japan) and Max-Planck-Institut fur Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Maskawa Institute for Science and Culture, Kyoto Sangyo University, Kyoto 603-8555 (Japan)

    2012-07-27

    We find constraint on intergenerational mixing of slepton from big-bang nucleosynthesis (BBN). Today, we know that there exist lepton flavor violation (LFV) from the observation of neutrino oscillation, though there do not exist LFV in the standard model of particle physics (SM). LFV in charged lepton sector (cLFV) have also been expected to exist. From theoretical point of view, the effects of long-lived stau on BBN have been investigated and it is known that the stau can solve the cosmological 7Li problem. However, in the study so far, tau flavor is exactly conserved and it contradict with the existence of cLFV. In this study, we generalize the flavor to be violated and call the stau as slepton. Even if the violation is tiny, it drastically changes the lifetime and the evolution of relic density of the slepton. Thus we analyze the effects of the long-lived slepton on BBN, and constrain the magnitude of the cLFV.

  8. Effect of quark-mass variation on big bang nucleosynthesis

    E-Print Network [OSTI]

    J. C. Berengut; V. F. Dmitriev; V. V. Flambaum

    2009-07-14

    We calculate the effect of variation in the light-current quark mass, $m_q$, on standard big bang nucleosynthesis. A change in $m_q$ at during the era of nucleosynthesis affects nuclear reaction rates, and hence primordial abundances, via changes the binding energies of light nuclei. It is found that a relative variation of $\\delta m_q/m_q = 0.016 \\pm 0.005$ provides better agreement between observed primordial abundances and those predicted by theory. This is largely due to resolution of the existing discrepancies for 7Li. However this method ignores possible changes in the position of resonances in nuclear reactions. The predicted 7Li abundance has a strong dependence on the cross-section of the resonant reactions 3He(d,p)4He and t(d,n)4He. We show that changes in $m_q$ at the time of BBN could shift the position of these resonances away from the Gamow window and lead to an increased production of 7Li, exacerbating the lithium problem.

  9. Big Bang Nucleosynthesis and the Helium Isotope Ratio

    E-Print Network [OSTI]

    Cooke, Ryan

    2015-01-01

    The conventional approach to search for departures from the standard model of physics during Big Bang Nucleosynthesis involves a careful, and subtle measurement of the mass fraction of baryons consisting of helium. Recent measurements of this quantity tentatively support new physics beyond the standard model but, historically, this method has suffered from hidden systematic uncertainties. In this letter, I show that a combined measurement of the primordial deuterium abundance and the primordial helium isotope ratio has the potential to provide a complementary and reliable probe of new physics beyond the standard model. Using the recent determination of the primordial deuterium abundance and assuming that the measured pre-solar 3He/4He meteoritic abundance reflects the primordial value, a bound can be placed on the effective number of neutrino species, Neff(BBN) = 3.01 (+0.95 -0.76, with 95 per cent confidence). Although this value of Neff supports the standard model, it is presently unclear if the pre-solar 3...

  10. Big Problems. Big Results.

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11DESERTWaterSharingBeyondBang or

  11. Visualization at Supercomputing Centers: The Tale of Little Big Iron and the Three Skinny Guys

    SciTech Connect (OSTI)

    Bethel, E. Wes; van Rosendale, John; Southard, Dale; Gaither, Kelly; Childs, Hank; Brugger, Eric; Ahern, Sean

    2010-12-01

    Supercomputing Centers (SC's) are unique resources that aim to enable scientific knowledge discovery through the use of large computational resources, the Big Iron. Design, acquisition, installation, and management of the Big Iron are activities that are carefully planned and monitored. Since these Big Iron systems produce a tsunami of data, it is natural to co-locate visualization and analysis infrastructure as part of the same facility. This infrastructure consists of hardware (Little Iron) and staff (Skinny Guys). Our collective experience suggests that design, acquisition, installation, and management of the Little Iron and Skinny Guys does not receive the same level of treatment as that of the Big Iron. The main focus of this article is to explore different aspects of planning, designing, fielding, and maintaining the visualization and analysis infrastructure at supercomputing centers. Some of the questions we explore in this article include:"How should the Little Iron be sized to adequately support visualization and analysis of data coming off the Big Iron?" What sort of capabilities does it need to have?" Related questions concern the size of visualization support staff:"How big should a visualization program be (number of persons) and what should the staff do?" and"How much of the visualization should be provided as a support service, and how much should applications scientists be expected to do on their own?"

  12. Visualization at Supercomputing Centers: The Tale of Little Big Iron and the Three Skinny Guys

    SciTech Connect (OSTI)

    Bethel, E Wes [Lawrence Berkeley National Laboratory (LBNL); Brugger, Eric [Lawrence Livermore National Laboratory (LLNL)

    2011-01-01

    Supercomputing centers are unique resources that aim to enable scientific knowledge discovery by employing large computational resources - the 'Big Iron.' Design, acquisition, installation, and management of the Big Iron are carefully planned and monitored. Because these Big Iron systems produce a tsunami of data, it's natural to colocate the visualization and analysis infrastructure. This infrastructure consists of hardware (Little Iron) and staff (Skinny Guys). Our collective experience suggests that design, acquisition, installation, and management of the Little Iron and Skinny Guys doesn't receive the same level of treatment as that of the Big Iron. This article explores the following questions about the Little Iron: How should we size the Little Iron to adequately support visualization and analysis of data coming off the Big Iron? What sort of capabilities must it have? Related questions concern the size of visualization support staff: How big should a visualization program be - that is, how many Skinny Guys should it have? What should the staff do? How much of the visualization should be provided as a support service, and how much should applications scientists be expected to do on their own?

  13. Force and torque acting on particles in a transitionally rough open channel flow

    E-Print Network [OSTI]

    Chan-Braun, Clemens; Uhlmann, Markus

    2011-01-01

    Direct numerical simulation of open channel flow over a geometrically rough wall has been performed at a bulk Reynolds number of approximately 2900. The wall consisted of a layer of spheres in a square arrangement. Two cases have been considered. In the first case the spheres are small (with diameter equivalent to 10.7 wall units) and the limit of the hydraulically smooth flow regime is approached. In the second case the spheres are more than three times larger (49.3 wall units) and the flow is in the transitionally rough flow regime. Special emphasis is given on the characterisation of the force and torque acting on a particle due to the turbulent flow. It is found that in both cases the mean drag, lift and spanwise torque are to a large extent produced at the top region of the particle surface. The intensity of the particle force fluctuations is significantly larger in the large-sphere case, while the trend differs for the fluctuations of the individual components of the torque. A simplified model is used t...

  14. Steady state in a gas of inelastic rough spheres heated by a uniform stochastic force

    E-Print Network [OSTI]

    Francisco Vega Reyes; Andrés Santos

    2015-11-04

    We study here the steady state attained in a granular gas of inelastic rough spheres that is subject to a spatially uniform random volume force. The stochastic force has the form of the so-called white noise and acts by adding impulse to the particle translational velocities. We work out an analytical solution of the corresponding velocity distribution function from a Sonine polynomial expansion that displays energy non-equipartition between the translational and rotational modes, translational and rotational kurtoses, and translational-rotational velocity correlations. By comparison with a numerical solution of the Boltzmann kinetic equation (by means of the Direct Simulation Monte Carlo method) we show that our analytical solution provides a good description that is quantitatively very accurate in certain ranges of inelasticity and roughness. We also find three important features that make the forced granular gas steady state very different from the homogeneous cooling state (attained by an unforced granular gas). First, the marginal velocity distributions are always close to a Maxwellian. Second, there is a continuous transition to the purely smooth limit (where the effects of particle rotations are ignored). And third, the angular translational-rotational velocity correlations show a preference for a quasiperpendicular mutual orientation (which is called "lifted-tennis-ball" behavior).

  15. Big Bang Nucleosynthesis and the Helium Isotope Ratio

    E-Print Network [OSTI]

    Ryan Cooke

    2015-10-09

    The conventional approach to search for departures from the standard model of physics during Big Bang Nucleosynthesis involves a careful, and subtle measurement of the mass fraction of baryons consisting of helium. Recent measurements of this quantity tentatively support new physics beyond the standard model but, historically, this method has suffered from hidden systematic uncertainties. In this letter, I show that a combined measurement of the primordial deuterium abundance and the primordial helium isotope ratio has the potential to provide a complementary and reliable probe of new physics beyond the standard model. Using the recent determination of the primordial deuterium abundance and assuming that the measured pre-solar 3He/4He meteoritic abundance reflects the primordial value, a bound can be placed on the effective number of neutrino species, Neff(BBN) = 3.01 (+0.95 -0.76, with 95 per cent confidence). Although this value of Neff supports the standard model, it is presently unclear if the pre-solar 3He/4He ratio reflects the primordial value. New astrophysical measurements of the helium isotope ratio in near-pristine environments, together with updated calculations and experimental values of several important nuclear reactions (some of which are already being attempted), will lead to much improved limits on possible departures from the standard model. To this end, I describe an analysis strategy to measure the 3He I flux emitted from nearby low metallicity H II regions. The proposed technique can be attempted with the next generation of large telescopes, and will be easier to realize in metal-poor H II regions with quiescent kinematics.

  16. 9/18/09 2:43 PM'Big Wave' Theory Offers Alternative to Dark Energy // Current Page 1 of 11http://current.com/items/90718274_big-wave-theory-offers-alternative-to-dark-energy.htm

    E-Print Network [OSTI]

    Temple, Blake

    9/18/09 2:43 PM'Big Wave' Theory Offers Alternative to Dark Energy // Current Page 1 of 11http://current.com/items/90718274_big-wave-theory-offers-alternative-to-dark-energy.htm login | register |home tv shows schedule to Dark Energy // Current Page 2 of 11http://current.com/items/90718274_big-wave-theory-offers-alternative-to-dark-energy

  17. The X^- Solution to the ^6Li and ^7Li Big Bang Nucleosynthesis Problems

    E-Print Network [OSTI]

    Motohiko Kusakabe; Toshitaka Kajino; Richard N. Boyd; Takashi Yoshida; Grant J. Mathews

    2008-03-24

    The $^6$Li abundance observed in metal poor halo stars appears to exhibit a plateau as a function of metallicity similar to that for $^7$Li, suggesting a big bang origin. However, the inferred primordial abundance of $^6$Li is $\\sim$1000 times larger than that predicted by standard big bang nucleosynthesis for the baryon-to-photon ratio inferred from the WMAP data. Also, the inferred $^7$Li primordial abundance is 3 times smaller than the big bang prediction. We here describe in detail a possible simultaneous solution to both the problems of underproduction of $^6$Li and overproduction of $^7$Li in big bang nucleosynthesis. This solution involves a hypothetical massive, negatively-charged leptonic particle that would bind to the light nuclei produced in big bang nucleosynthesis, but would decay long before it could be detected. We consider only the $X$-nuclear reactions and assume that the effect of decay products is negligible, as would be the case if lifetime were large or the mass difference between the charged particle and its daughter were small. An interesting feature of this paradigm is that, because the particle remains bound to the existing nuclei after the cessation of the usual big bang nuclear reactions, a second longer epoch of nucleosynthesis can occur among $X$-nuclei. We confirm that reactions in which the hypothetical particle is transferred can occur that greatly enhance the production of $^6$Li while depleting $^7$Li. We also identify a new reaction that destroys large amounts of $^7$Be, and hence reduces the ultimate $^7$Li abundance. Thus, big-bang nucleosynthesis in the presence of these hypothetical particles, together with or without an event of stellar processing, can simultaneously solve the two Li abundance problems.

  18. Improved detection of rough defects for ultrasonic NDE inspections based on finite element modeling of elastic wave scattering

    SciTech Connect (OSTI)

    Pettit, J. R. [Rolls-Royce Nuclear, PO BOX 2000, Derby, UK, DE21 7XX and Research Centre for NDE, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom); Walker, A. [Rolls-Royce Nuclear, PO BOX 2000, Derby DE21 7XX (United Kingdom); Lowe, M. J. S. [Research Centre for NDE, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom)

    2014-02-18

    Defects which posses rough surfaces greatly affect ultrasonic wave scattering behaviour, often reducing the magnitude of reflected signals. Ultrasonic inspections rely upon this response for detecting and sizing flaws. For safety critical components reliable characterisation is crucial. Therefore, providing an accurate means to predict reductions in signal amplitude is essential. An extension of Kirchhoff theory has formed the basis for the UK power industry inspection justifications. However, it is widely recognised that these predictions are pessimistic owing to analytical approximations. A numerical full field modelling approach does not fall victim to such limitations. Here, a Finite Element model is used to aid in setting a non-conservative reporting threshold during the inspection of a large pressure vessel forging that might contain embedded rough defects. The ultrasonic response from multiple rough surfaces defined by the same statistical class is calculated for normal incident compression waves. The approach is validated by comparing coherent scattering with predictions made by Kirchhoff theory. At lower levels of roughness excellent agreement is observed, whilst higher values confirm the pessimism of Kirchhoff theory. Furthermore, the mean amplitude in the specular direction is calculated. This represents the information obtained during an inspection, indicating that reductions due to increasing roughness are significantly less than the coherent component currently being used.

  19. Water-waves modes trapped in a canal by a body with the rough surface

    E-Print Network [OSTI]

    G. Cardone; T. Durante; S. A. Nazarov

    2009-10-06

    The problem about a body in a three dimensional infinite channel is considered in the framework of the theory of linear water-waves. The body has a rough surface characterized by a small parameter $\\epsilon>0$ while the distance of the body to the water surface is also of order $\\epsilon$. Under a certain symmetry assumption, the accumulation effect for trapped mode frequencies is established, namely, it is proved that, for any given $d>0$ and integer $N>0$, there exists $\\epsilon(d,N)>0$ such that the problem has at least $N$ eigenvalues in the interval $(0,d)$ of the continuous spectrum in the case $\\epsilon\\in(0,\\epsilon(d,N)) $. The corresponding eigenfunctions decay exponentially at infinity, have finite energy, and imply trapped modes.

  20. Light emitting diode with high aspect ratio submicron roughness for light extraction and methods of forming

    SciTech Connect (OSTI)

    Li, Ting (Ventura, CA)

    2011-04-26

    The surface morphology of an LED light emitting surface is changed by applying a reactive ion etch (RIE) process to the light emitting surface. High aspect ratio, submicron roughness is formed on the light emitting surface by transferring a thin film metal hard-mask having submicron patterns to the surface prior to applying a reactive ion etch process. The submicron patterns in the metal hard-mask can be formed using a low cost, commercially available nano-patterned template which is transferred to the surface with the mask. After subsequently binding the mask to the surface, the template is removed and the RIE process is applied for time duration sufficient to change the morphology of the surface. The modified surface contains non-symmetric, submicron structures having high aspect ratio which increase the efficiency of the device.

  1. The apparent roughness of a sand surface blown by wind from an analytical model of saltation

    E-Print Network [OSTI]

    Thomas Pähtz; Jasper F. Kok; Hans J. Herrmann

    2015-03-16

    We present an analytical model of aeolian sand transport. The model quantifies the momentum transfer from the wind to the transported sand by providing expressions for the thickness of the saltation layer and the apparent surface roughness. These expressions are derived from basic physical principles and a small number of assumptions. The model further predicts the sand transport rate (mass flux) and the impact threshold (the smallest value of the wind shear velocity at which saltation can be sustained). We show that, in contrast to previous studies, the present model's predictions are in very good agreement with a range of experiments, as well as with numerical simulations of aeolian saltation. Because of its physical basis, we anticipate that our model will find application in studies of aeolian sand transport on both Earth and Mars.

  2. Light emitting diode with high aspect ratio submicron roughness for light extraction and methods of forming

    DOE Patents [OSTI]

    Li, Ting

    2013-08-13

    The surface morphology of an LED light emitting surface is changed by applying a reactive ion etch (RIE) process to the light emitting surface. High aspect ratio, submicron roughness is formed on the light emitting surface by transferring a thin film metal hard-mask having submicron patterns to the surface prior to applying a reactive ion etch process. The submicron patterns in the metal hard-mask can be formed using a low cost, commercially available nano-patterned template which is transferred to the surface with the mask. After subsequently binding the mask to the surface, the template is removed and the RIE process is applied for time duration sufficient to change the morphology of the surface. The modified surface contains non-symmetric, submicron structures having high aspect ratio which increase the efficiency of the device.

  3. Adhesion between elastic solids with randomly rough surfaces: comparison of analytical theory with molecular dynamics simulations

    E-Print Network [OSTI]

    N. Mulakaluri; B. N. J. Persson

    2011-12-22

    The adhesive contact between elastic solids with randomly rough, self affine fractal surfaces is studied by molecular dynamics (MD) simulations. The interfacial binding energy obtained from the simulations of nominally flat and curved surfaces is compared with the predictions of the contact mechanics theory by Persson. Theoretical and simulation results agree rather well, and most of the differences observed can be attributed to finite size effects and to the long-range nature of the interaction between the atoms in the block and the substrate in the MD model, as compared to the analytical theory which is for an infinite system with interfacial contact interaction. For curved surfaces (JKR-type of problem) the effective interfacial energy exhibit a weak hysteresis which may be due to the influence of local irreversible detachment processes in the vicinity of the opening crack tip during pull-off.

  4. A study of pitch oscillation and roughness on airfoils used for horizontal axis wind turbines

    SciTech Connect (OSTI)

    Gregorek, G.M.; Hoffmann, M.J.; Ramsay, R.R.; Janiszewska, J.M. [Ohio State Univ., Columbus, OH (United States)

    1995-12-01

    Under subcontract XF-1-11009-3 the Ohio State University Aeronautical and Astronautical Research Laboratory (OSU/AARL) with the National Renewable Energy Laboratory (NREL) developed an extensive database of empirical aerodynamic data. These data will assist in the development of analytical models and in the design of new airfoils for wind turbines. To accomplish the main objective, airfoil models were designed, built and wind tunnel tested with and without model leading edge grit roughness (LEGR). LEGR simulates surface irregularities due to the accumulation of insect debris, ice, and/or the aging process. This report is a summary of project project activity for Phase III, which encompasses the time period from September 17, 1 993 to September 6, 1 994.

  5. Elevated levels of plasma Big endothelin-1 and its relation to hypertension and skin lesions in individuals exposed to arsenic

    SciTech Connect (OSTI)

    Hossain, Ekhtear; Islam, Khairul; Yeasmin, Fouzia [Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205 (Bangladesh)] [Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205 (Bangladesh); Karim, Md. Rezaul [Department of Applied Nutrition and Food Technology, Islamic University, Kushtia-7003 (Bangladesh)] [Department of Applied Nutrition and Food Technology, Islamic University, Kushtia-7003 (Bangladesh); Rahman, Mashiur; Agarwal, Smita; Hossain, Shakhawoat; Aziz, Abdul; Al Mamun, Abdullah; Sheikh, Afzal; Haque, Abedul; Hossain, M. Tofazzal [Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205 (Bangladesh)] [Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205 (Bangladesh); Hossain, Mostaque [Department of Medicine, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders (BIRDEM), Dhaka (Bangladesh)] [Department of Medicine, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders (BIRDEM), Dhaka (Bangladesh); Haris, Parvez I. [Faculty of Health and Life Sciences, De Montfort University, Leicester, LE1 9BH (United Kingdom)] [Faculty of Health and Life Sciences, De Montfort University, Leicester, LE1 9BH (United Kingdom); Ikemura, Noriaki; Inoue, Kiyoshi; Miyataka, Hideki; Himeno, Seiichiro [Laboratory of Molecular Nutrition and Toxicology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770–8514 (Japan)] [Laboratory of Molecular Nutrition and Toxicology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770–8514 (Japan); Hossain, Khaled, E-mail: khossain69@yahoo.com [Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205 (Bangladesh)] [Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205 (Bangladesh)

    2012-03-01

    Chronic arsenic (As) exposure affects the endothelial system causing several diseases. Big endothelin-1 (Big ET-1), the biological precursor of endothelin-1 (ET-1) is a more accurate indicator of the degree of activation of the endothelial system. Effect of As exposure on the plasma Big ET-1 levels and its physiological implications have not yet been documented. We evaluated plasma Big ET-1 levels and their relation to hypertension and skin lesions in As exposed individuals in Bangladesh. A total of 304 study subjects from the As-endemic and non-endemic areas in Bangladesh were recruited for this study. As concentrations in water, hair and nails were measured by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS). The plasma Big ET-1 levels were measured using a one-step sandwich enzyme immunoassay kit. Significant increase in Big ET-1 levels were observed with the increasing concentrations of As in drinking water, hair and nails. Further, before and after adjusting with different covariates, plasma Big ET-1 levels were found to be significantly associated with the water, hair and nail As concentrations of the study subjects. Big ET-1 levels were also higher in the higher exposure groups compared to the lowest (reference) group. Interestingly, we observed that Big ET-1 levels were significantly higher in the hypertensive and skin lesion groups compared to the normotensive and without skin lesion counterpart, respectively of the study subjects in As-endemic areas. Thus, this study demonstrated a novel dose–response relationship between As exposure and plasma Big ET-1 levels indicating the possible involvement of plasma Big ET-1 levels in As-induced hypertension and skin lesions. -- Highlights: ? Plasma Big ET-1 is an indicator of endothelial damage. ? Plasma Big ET-1 level increases dose-dependently in arsenic exposed individuals. ? Study subjects in arsenic-endemic areas with hypertension have elevated Big ET-1 levels. ? Study subjects with arsenic-induced skin lesions show elevated plasma Big ET-1 levels. ? Arsenic-induced hypertension and skin lesions may be linked to plasma Big ET-1 levels.

  6. Detailed comparative study and a mechanistic model of resuspension of spherical particles from rough and smooth surfaces

    E-Print Network [OSTI]

    Shnapp, Ron

    2014-01-01

    Resuspension of solid particles by a tornado-like vortex from surfaces of different roughness is studied using a three-dimensional particle tracking velocimetry (3D-PTV) method. By utilizing the three-dimensional information on particle positions, velocities and accelerations before, during and after the resuspension (lift-off) event, we demonstrate that the resuspension efficiency is significantly higher from the rough surface, and propose a mechanistic model of this peculiar effect. The results indicate that for all Reynolds numbers tested, the resuspension rate, as well as particle velocities and accelerations, are higher over the rough surface, as compared to the smooth counterpart. The results and the model can help to improve modeling and analysis of resuspension rates in engineering and environmental applications.

  7. Roughness of the SiC/SiO{sub 2} vicinal interface and atomic structure of the transition layers

    SciTech Connect (OSTI)

    Liu, Peizhi; Li, Guoliang; Duscher, Gerd, E-mail: gduscher@utk.edu [Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996 (United States); Sharma, Yogesh K.; Ahyi, Ayayi C.; Isaacs-Smith, Tamara; Williams, John R.; Dhar, Sarit [Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)

    2014-11-01

    The SiC/SiO{sub 2} interface is generally considered to be the cause for the reduced electron mobility of SiC power devices. Previous studies have shown a correlation between the mobility and the transition layer width at the SiC/SiO{sub 2} interface. The authors investigated this interface with atomic resolution Z-contrast imaging and electron energy-loss spectroscopy, and discovered that this transition region was due to the roughness of the vicinal interface. The roughness of a vicinal interface consisted of atomic steps and facets deviating from the ideal off-axis cut plane. The authors conclude that this roughness is limiting the mobility in the channels of SiC MOSFETs.

  8. U.S. strategic petroleum reserve Big Hill 114 leak analysis 2012.

    SciTech Connect (OSTI)

    Lord, David L.; Roberts, Barry L.; Lord, Anna C. Snider; Sobolik, Steven Ronald; Park, Byoung Yoon; Rudeen, David Keith [GRAM, Inc., Albuquerque, NM

    2013-06-01

    This report addresses recent well integrity issues related to cavern 114 at the Big Hill Strategic Petroleum Reserve site. DM Petroleum Operations, M&O contractor for the U.S. Strategic Petroleum Reserve, recognized an apparent leak in Big Hill cavern well 114A in late summer, 2012, and provided written notice to the State of Texas as required by law. DM has since isolated the leak in well A with a temporary plug, and is planning on remediating both 114 A- and B-wells with liners. In this report Sandia provides an analysis of the apparent leak that includes: (i) estimated leak volume, (ii) recommendation for operating pressure to maintain in the cavern between temporary and permanent fixes for the well integrity issues, and (iii) identification of other caverns or wells at Big Hill that should be monitored closely in light of the sequence of failures there in the last several years.

  9. 3/3/2014 Big ideas for tinywindmills at UTA | RenewablesBiz http://www.renewablesbiz.com/article/14/03/big-ideas-tiny-windmills-uta 1/3

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    Energy Central E-Newsletters Recent News/Commentary Three Firms Win Solar Plant Tenders In Va. politics, renewable energy dwarfed by big utility ET Solar Builds Large Scale Solar Power Projects in UK Big ideas windmills could one day power wireless sensors that detect cracks in bridges, failures in security systems

  10. Astrophysical S-factor for destructive reactions of lithium-7 in big bang nucleosynthesis

    SciTech Connect (OSTI)

    Komatsubara, Tetsuro; Kwon, YoungKwan; Moon, JunYoung; Kim, Yong-Kyun [Rare Isotope Science Project, Institute for Basic Science, Daejeon (Korea, Republic of); Moon, Chang-Bum [Hoseo University, Asan, Chungnam (Korea, Republic of); Ozawa, Akira; Sasa, Kimikazu; Onishi, Takahiro; Yuasa, Toshiaki; Okada, Shunsuke; Saito, Yuta [Division of Physics, University of Tsukuba, Tsukuba, Ibaraki (Japan); Hayakawa, Takehito; Shizuma, Toshiyuki [Japan Atomic Energy Agency, Shirakata Shirane, Tokai, Ibaraki (Japan); Kubono, Shigeru [RIKEN, Hirosawa, Wako, Saitama (Japan); Kusakabe, Motohiko [School of Liberal Arts and Science, Korea Aerospace University (Korea, Republic of); Kajino, Toshitaka [National Astronomical Observatory, Osawa, Mitaka, Tokyo (Japan)

    2014-05-02

    One of the most prominent success with the Big Bang models is the precise reproduction of mass abundance ratio for {sup 4}He. In spite of the success, abundances of lithium isotopes are still inconsistent between observations and their calculated results, which is known as lithium abundance problem. Since the calculations were based on the experimental reaction data together with theoretical estimations, more precise experimental measurements may improve the knowledge of the Big Bang nucleosynthesis. As one of the destruction process of lithium-7, we have performed measurements for the reaction cross sections of the {sup 7}L({sup 3}He,p){sup 9}Be reaction.

  11. Non-universal scalar-tensor theories and big bang nucleosynthesis

    E-Print Network [OSTI]

    Alain Coc; Keith A. Olive; Jean-Philippe Uzan; Elisabeth Vangioni

    2008-11-12

    We investigate the constraints that can be set from big-bang nucleosynthesis on two classes of models: extended quintessence and scalar-tensor theories of gravity in which the equivalence principle between standard matter and dark matter is violated. In the latter case, and for a massless dilaton with quadratic couplings, the phase space of theories is investigated. We delineate those theories where attraction toward general relativity occurs. It is shown that big-bang nucleosynthesis sets more stringent constraints than those obtained from Solar system tests.

  12. Bipedal Robotic Walking on Flat-Ground, Up-Slope and Rough Terrain with Human-Inspired Hybrid Zero Dynamics 

    E-Print Network [OSTI]

    Nadubettu Yadukumar, Shishir 1986-

    2012-12-10

    The thesis shows how to achieve bipedal robotic walking on flat-ground, up-slope and rough terrain by using Human-Inspired control. We begin by considering human walking data and find outputs (or virtual constraints) that, when calculated from...

  13. Lattice Boltzmann simulations in microfluidics: probing the no-slip boundary condition in hydrophobic, rough, and surface nanobubble laden microchannels

    E-Print Network [OSTI]

    Jens Harting; Christian Kunert; Jari Hyväluoma

    2009-10-19

    In this contribution we review recent efforts on investigations of the effect of (apparent) boundary slip by utilizing lattice Boltzmann simulations. We demonstrate the applicability of the method to treat fundamental questions in microfluidics by investigating fluid flow in hydrophobic and rough microchannels as well as over surfaces covered by nano- or microscale gas bubbles.

  14. Interpretation of recent seismic data from a frontier hydrocarbon province: western Rough Creek graben, southern Illinois and western Kentucky

    SciTech Connect (OSTI)

    Bertagne, A.J.; Pisasale, E.T.; Leising, T.C.

    1986-05-01

    The northern basement fault of the Rough Creek graben is seismically discernible and has surface expression in the Rough Creek fault zone. The southern basement fault is not clearly defined seismically, but can be inferred from shallow faulting and gravity data. This fault is roughly coincident with the Pennyrile fault zone. Extensional faults that formed the rift boundaries were the sites of late-stage compressional and extensional tectonics. Flower structures observed along the graben boundaries probably indicate post-Pennsylvanian wrench faulting. The basement within the graben plunges north-northwest, with the lowest point occurring south of the Rough Creek fault zone. Pre-Knox sediments thicken to approximately 12,000 in this area. The Knox Megagroup thickens toward the Mississippi Embayment, ranging from 4800 ft (southeastern graben area) to more than 7000 ft (west end of graben). Upper Ordovician to Devonian units also display westward thickening. The top of the Meramecian, New Albany, Maquoketa, and the base of the Knox generate continuous, high-amplitude seismic reflections due to large impedance contrasts between clastic and carbonate units. Shallow oil and gas production (Mississippian and Pennsylvanian) is present in this area. However, deep horizons (Knox, Lower Cambrian) remain relatively untested. Potential hydrocarbon traps in the pre-Knox sequence observed on seismic include fault blocks and updip pinch-outs.

  15. Effect of edge roughness on electronic transport in graphene nanoribbon channel metal-oxide-semiconductor field-effect transistors

    E-Print Network [OSTI]

    Gilbert, Matthew

    Effect of edge roughness on electronic transport in graphene nanoribbon channel metal-oxide-semiconductor on transport in graphene nanoribbon metal-oxide-semiconductor field-effect transistors MOSFETs are reported of Physics. DOI: 10.1063/1.2839330 Graphene has recently generated considerable interest as a semiconductor

  16. High-order solutions of three-dimensional rough-surface scattering problems at high-frequencies.

    E-Print Network [OSTI]

    Turc, Catalin

    High-order solutions of three-dimensional rough-surface scattering problems at high-frequencies. II with the capability of delivering very accurate results from low to high frequencies at a cost that is independent and polarizations. Submitted to: Waves Random Media #12;High-order high-frequency scattering solutions 2 1

  17. September 15, 2003 / Vol. 28, No. 18 / OPTICS LETTERS 1665 Heat treatment for reduction of surface roughness

    E-Print Network [OSTI]

    Avrutsky, Ivan

    September 15, 2003 / Vol. 28, No. 18 / OPTICS LETTERS 1665 Heat treatment for reduction of surface postdevelopment heat treatment of the photoresist polymer used in the preparation of holographic gratings has been the postdevelopment heat treatment to reduce the surface roughness, the setup shown in Fig. 1 was used. The diffracted

  18. GEOPHYSICAL RESEARCH LETTERS, VOL. 28, NO. 5, PAGES 811-814, MARCH 1, 2001 Parameterizing Tidal Dissipation over Rough

    E-Print Network [OSTI]

    Jayne, Steven

    of barotropic tidal energy. The first line of evidence comes from observations of mix- ing in the abyssal Brazil ocean, the energy flux carried by internal waves generated over rough topog- raphy dominates the energy issues. The first is whether including a parameterization for internal wave energy-flux in a model

  19. Big picture Ads Duplicate detection Spam Web IR Size of the web Web Search and Text Mining

    E-Print Network [OSTI]

    Gray, Alexander

    Big picture Ads Duplicate detection Spam Web IR Size of the web Web Search and Text Mining http://www.cc.gatech.edu/~agray/6240spr11 IIR 19: Web Search Basics Alexander Gray Georgia Institute of Technology, College of Computing 2011 Gray: Web Search Basics 1 / 117 #12;Big picture Ads Duplicate detection Spam Web IR Size

  20. Cisco Systems Research Chair The Johnson-Shoyama Graduate School of Public Policy (JSGS) invites applications for a newly established Cisco Systems Research Chair in Big Data and

    E-Print Network [OSTI]

    Saskatchewan, University of

    applications for a newly established Cisco Systems Research Chair in Big Data and Open Government government,Web 2.0, big data analytics and social media. This tenured-track position, with reduced teaching

  1. The Digital Skin of Cities: Urban Theory and Research in the Age of the Sensored and Metered City, Ubiquitous Computing, and Big Data

    E-Print Network [OSTI]

    Rabari, Chirag

    2013-01-01

    Metered City, Ubiquitous Computing, and Big Data A thesisMetered City, Ubiquitous Computing, and Big Data by ChiragIn concert with ubiquitous computing, and the increasing use

  2. Image Formation by Incoherent and Coherent Transition Radiation from Flat and Rough Surfaces

    SciTech Connect (OSTI)

    Stupakov, Gennady; /SLAC

    2012-03-01

    In this paper we derive equations for the image formation of transverse profile of a relativistic beam obtained by means of optical transition radiation (OTR) from flat and rough metal surfaces. The motivation behind this study lies in the desire to suppress coherent transition radiation (COTR) observed in experiments at modern free electron lasers. The physical mechanism behind the problem of COTR is that the OTR is predominantly radiated at small angles of order of 1/{gamma} where {gamma} is the relativistic factor of the beam. This means that the transverse formation size of the image is of order of {bar {lambda}}{gamma} where {bar {lambda}} = {lambda}/2{pi} with {lambda} the radiation wavelength. For relativistic beams this can be comparable or even exceed the transverse size of the beam, which would mean that the image of the beam has very little to do with its transverse profile. It is fortuitous, however, that the incoherent image is formed by adding radiation energy of electrons and results in the transverse formation size being of order of {bar {lambda}}/{theta}{sub a}, with {theta}{sub a} is the aperture angle of the optical system. The COTR image, in contrast, is formed by adding electromagnetic field of electrons, and leads to the formation size {bar {lambda}}{gamma}. In situations when the COTR intensity exceeds that of OTR the COTR imaging makes the diagnostic incapable of measuring the beam profile.

  3. IDC Reengineering Phase 2 & 3 Rough Order of Magnitude (ROM) Cost Estimate Summary (Leveraged NDC Case).

    SciTech Connect (OSTI)

    Harris, James M.; Prescott, Ryan; Dawson, Jericah M.; Huelskamp, Robert M.

    2014-11-01

    Sandia National Laboratories has prepared a ROM cost estimate for budgetary planning for the IDC Reengineering Phase 2 & 3 effort, based on leveraging a fully funded, Sandia executed NDC Modernization project. This report provides the ROM cost estimate and describes the methodology, assumptions, and cost model details used to create the ROM cost estimate. ROM Cost Estimate Disclaimer Contained herein is a Rough Order of Magnitude (ROM) cost estimate that has been provided to enable initial planning for this proposed project. This ROM cost estimate is submitted to facilitate informal discussions in relation to this project and is NOT intended to commit Sandia National Laboratories (Sandia) or its resources. Furthermore, as a Federally Funded Research and Development Center (FFRDC), Sandia must be compliant with the Anti-Deficiency Act and operate on a full-cost recovery basis. Therefore, while Sandia, in conjunction with the Sponsor, will use best judgment to execute work and to address the highest risks and most important issues in order to effectively manage within cost constraints, this ROM estimate and any subsequent approved cost estimates are on a 'full-cost recovery' basis. Thus, work can neither commence nor continue unless adequate funding has been accepted and certified by DOE.

  4. Progress on the 1.6-meter New Solar Telescope at Big Bear Solar Observatory

    E-Print Network [OSTI]

    of the drivers for building solar telescopes with large apertures. Recent advances in adaptive optics (AO) make it possible to build solar telescopes in an open configuration and thus go beyond the conventional meterProgress on the 1.6-meter New Solar Telescope at Big Bear Solar Observatory C. Denkera, P. R

  5. Towards an Understanding of Facets and Exemplars of Big Data Applications Geoffrey C.Fox1

    E-Print Network [OSTI]

    Towards an Understanding of Facets and Exemplars of Big Data Applications Geoffrey C.Fox1 conclusions for the hardware and software architectures that are suggested by this analysis. 1. Introduction cases. However our focus is on Science and Engineering research of data- intensive applications. We

  6. ORIGINAL PAPER Global warming may freeze the invasion of big-headed ants

    E-Print Network [OSTI]

    Courchamp, Franck

    ORIGINAL PAPER Global warming may freeze the invasion of big-headed ants Cleo Bertelsmeier · Gloria is that these threats interact, and that a globally warming climate could favour invasive species. In this study we techniques, 3 Global Circu- lation Models and 2 CO2 emission scenarios, we generated world maps with suitable

  7. From the Big Bang to the Higgs Boson in Less Than an Hour

    E-Print Network [OSTI]

    Fygenson, Deborah Kuchnir

    From the Big Bang to the Higgs Boson in Less Than an Hour Jeffrey D H Higgs boson Gauge bosons (force field quanta) Higgs boson and vacuum expectation value Strong) photon Z boson W bosons H Higgs boson Gauge bosons (force field quanta) Higgs boson and vacuum

  8. From the Big Bang to the Higgs Boson in Less Than an Hour

    E-Print Network [OSTI]

    Fygenson, Deborah Kuchnir

    From the Big Bang to the Higgs Boson in Less Than an Hour Jeffrey D neutrino Z0 W + W -g gluon (8) photon Z boson W bosons Quarks Leptons H Higgs boson Gauge bosons (force field quanta) Higgs boson and vacuum expectation value Strong force EM force Weak force #12;Par7cles

  9. The Thermal Control of the New Solar Telescope at Big Bear Observatory

    E-Print Network [OSTI]

    For large-diameter solar telescopes operating at the theoretical diffraction limit, one of the main designThe Thermal Control of the New Solar Telescope at Big Bear Observatory Angelo P. Verdonia and Carsten Denkera aNew Jersey Institute of Technology, Center for Solar-Terrestrial Research, 323 Martin

  10. Galen H. Sasaki EE 361 University of Hawaii 1 More C functions and Big

    E-Print Network [OSTI]

    Sasaki, Galen H.

    Galen H. Sasaki EE 361 University of Hawaii 1 More C functions and Big Picture [MIPSc Notes ­ Assembling · Passing parameters by value or reference Galen H. Sasaki EE 361 University of Hawaii 2 C;Galen H. Sasaki EE 361 University of Hawaii 3 Callee max(int i, int j) { if (i>j) return i; else return

  11. Compilation and R-matrix analysis of Big Bang nuclear reaction rates

    E-Print Network [OSTI]

    Pierre Descouvemont; Abderrahim Adahchour; Carmen Angulo; Alain Coc; Elisabeth Vangioni-Flam

    2004-07-06

    We use the R-matrix theory to fit low-energy data on nuclear reactions involved in Big Bang nucleosynthesis. A special attention is paid to the rate uncertainties which are evaluated on statistical grounds. We provide S factors and reaction rates in tabular and graphical formats.

  12. Big Science, Small Scale Western University has made significant investments in nanotechnology

    E-Print Network [OSTI]

    Lennard, William N.

    Big Science, Small Scale Western University has made significant investments in nanotechnology in materials and biomaterials. Nanotechnology is poised to revolutionize and advance many vital sectors in nanotechnology and photonics · Houses state-of-the-art instruments, with tools for SEM capabilities and focused

  13. Using Big Data and Smart Field Technology for Detecting Leakage in a CO2 Storage Projects

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    of the underground carbon dioxide storage to confine and sustain the injected CO2 for very long time. If a leakageSPE 166137 Using Big Data and Smart Field Technology for Detecting Leakage in a CO2 Storage sequestration of carbon dioxide is one of the most fascinating developing technologies in order to reduce

  14. Before the Big Bang? A Novel Resolution of a Profound Cosmological Puzzle

    ScienceCinema (OSTI)

    Penrose, Roger

    2010-09-01

    The second law of thermodynamics says, in effect, that things get more random as time progresses. Thus, we can deduce that the beginning of the universe - the Big Bang - must have been an extraordinarily precisely organized state. What was the nature of this state? How can such a special state have come about? In Penrose's talk, a novel explanation is suggested.

  15. April 28, 2005 Itty-Bitty and Shrinking, Fusion Device Has Big Ideas

    E-Print Network [OSTI]

    and slams them together to produce helium. Unlike earlier claims of tabletop fusion - "cold fusion," in 1989April 28, 2005 Itty-Bitty and Shrinking, Fusion Device Has Big Ideas By KENNETH CHANG Correction nuclear fusion - the same process that powers the sun - in a footlong cylinder just five inches

  16. BIG: A ResourceBounded Information Gathering and Decision Support Agent \\Lambday

    E-Print Network [OSTI]

    Zhang, Xiaoqin

    BIG: A Resource­Bounded Information Gathering and Decision Support Agent \\Lambday Victor Lesser an invaluable information resource but the explosion of available information has made web search a time of accessibility, reliability and associated costs present a complex information gathering coordination problem

  17. BIG: A Resource-Bounded Information Gathering and Decision Support Agent y

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    BIG: A Resource-Bounded Information Gathering and Decision Support Agent y Victor Lesser Bryan an invaluable information resource but the explosion of available information has made web search a time of accessibility, reliability and associated costs present a complex information gathering coordination problem

  18. BIG: A Resource-Bounded Information Gathering and Decision Support Agent

    E-Print Network [OSTI]

    Raja, Anita

    BIG: A Resource-Bounded Information Gathering and Decision Support Agent ¡ Victor Lesser Bryan an invaluable information resource but the explosion of available information has made web search a time of accessibility, reliability and associated costs present a complex information gathering coordination problem

  19. Why Big Data Industrial Systems Need Rules and What We Can Do About It

    E-Print Network [OSTI]

    Doan, AnHai

    of Wisconsin-Madison, 2 Uber, 3 LinkedIn, 4 @WalmartLabs ABSTRACT Big Data industrial systems that address generation, evaluation, execution, optimization, and maintenance. We discuss ongoing work at Walmart the second and fifth authors were at Walmart- Labs. Permission to make digital or hard copies of all or part

  20. Neutrinos and Arms Control: Thinking Big about Detection of Neutrinos from

    E-Print Network [OSTI]

    Learned, John

    Neutrinos and Arms Control: Thinking Big about Detection of Neutrinos from Reactors at Long detect and monitor any new reactor, in particular one which may be producing illicit nuclear weapons FOR INTERNATIONAL REACTOR MONITORING In the present world political environment when nuclear weapons capability