Powered by Deep Web Technologies
Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Light-Emitting Tag Testing in Conjunction with Testing of the Minimum Gap Runner Turbine Design at Bonneville Dam Powerhouse 1  

SciTech Connect (OSTI)

This report describes a pilot study conducted by Tom Carlson of PNNL and Mark Weiland of MEVATEC Corp to test the feasibility of using light-emitting tags to visually track objects passing through the turbine environment of a hydroelectric dam. Light sticks were released at the blade tip, mid-blade, and hub in the MGR turbine and a Kaplan turbine at Bonneville Dam and videotaped passing thru the dam to determine visibility and object trajectories.

Carlson, Thomas J.; Weiland, Mark A.

2001-01-30T23:59:59.000Z

2

Runner upgrading: Learning from Ontario Hydro`s experience  

SciTech Connect (OSTI)

Planning, design, and implementation of turbine runner replacement at Ontario Hydro is described in the article. The use of fully homologous modeling for upgrade projects, including both francis and propeller runner types, is outlined. Confirmation of physical model efficiency is obtained through numerical modeling. Inlet connections, setting cavitation-erosion guarantees, and other guarantees included in tender documents are also described in some detail.

Kee, D.C.; Markovich, M.S.; Munro, R.I. [Ontario Hydro (Canada)

1997-02-01T23:59:59.000Z

3

V-203: HP LoadRunner Multiple Bugs Let Remote Users Deny Service and  

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

3: HP LoadRunner Multiple Bugs Let Remote Users Deny Service 3: HP LoadRunner Multiple Bugs Let Remote Users Deny Service and Execute Arbitrary Code V-203: HP LoadRunner Multiple Bugs Let Remote Users Deny Service and Execute Arbitrary Code July 26, 2013 - 3:31am Addthis PROBLEM: A remote user can execute arbitrary code on the target system. A remote user can cause denial of service conditions. PLATFORM: HP LoadRunner prior to 11.52 ABSTRACT: Multiple vulnerabilities were reported in HP LoadRunner. REFERENCE LINKS: Security Tracker Alert ID: 1028833 CVE-2013-2368 CVE-2013-2369 CVE-2013-2370 CVE-2013-4797 CVE-2013-4798 CVE-2013-4799 CVE-2013-4800 CVE-2013-4801 IMPACT ASSESSMENT: Medium DISCUSSION: Potential security vulnerabilities have been identified with HP LoadRunner. The vulnerabilities could be remotely exploited to allow execution of code

4

On the Fatigue Reliability of Hydroelectric Francis Runners  

Science Journals Connector (OSTI)

Abstract The reliability assessment of large rotating structures like hydroelectric Francis runners is often limited by our capacity to define a proper limit state combined with a relevant degradation model. In this paper, we propose that the proper limit state for fatigue reliability of such structures is the onset of high cycle fatigue (HCF). Based on this premise, a prior interval for our limit state based on available literature is presented. The prior assumptions are believed to be the first step toward validation of the applicability and suitability of the proposed model. The paper includes an overview of the theoretical background for reliability assessment of Francis turbine runners, the methodology used, and the results obtained from the information gathered from the available literature.

Martin Gagnon; Antoine Tahan; Philippe Bocher; Denis Thibault

2013-01-01T23:59:59.000Z

5

Concentration of Ca in blood of amateur runners using NAA  

SciTech Connect (OSTI)

In this study the Ca levels were determined in amateur runners blood at LABEX (Laboratorio de Bioquimica do Exercicio - UNICAMP, Brazil), using Neutron Activation Analyses (NAA) technique. The range established at rest (162 - 410 mgL{sup -1}) when compared with control group (51 - 439 mgL{sup -1}) suggests that there is a dependency of these limits in the function of the adopted physical training.

Kovacs, L.; Zamboni, C. B.; Metairon, S. [Instituto de Pesquisas Energeticas e Nucleares (IPEN / CNEN - SP) - Centro do Reator de Pesquisas Av. Professor Lineu Prestes, 2242 - 05508-000 Sao Paulo, SP (Brazil); Nunes, L. A. S.; Lourenco, T. F.; Macedo, D. V. [Universidade Estadual de Campinas - UNICAMP - Laboratorio de Bioquimica do Exercicio - LABEX Cidade Universitaria 13083-970 - Campinas, SP Brazil - Caixa-Postal: 6109 (Brazil)

2013-05-06T23:59:59.000Z

6

Webinar: America's Next Top Energy Innovator Runner-Up Presents Hydrogen Detection Technologies  

Broader source: Energy.gov [DOE]

Video recording and text version of the webinar, "America's Next Top Energy Innovator Runner-Up Presents Hydrogen Detection Technologies," originally presented on April 3, 2012.

7

Economic effectiveness of using temporary runners on the turbines of the first line of the Nurek hydroelectric station  

Science Journals Connector (OSTI)

The installation of temporary runners at high-head hydroelectric stations provides: shortening of the station startup...

S. N. Ostroumov; K. A. Lyubitskii; V. F. Ilyushin…

1972-11-01T23:59:59.000Z

8

Experimental optimization of a free vortex propeller runner for micro hydro application  

SciTech Connect (OSTI)

The turbine technology for low head application in the micro hydro range has been vastly neglected despite niche available in scattered regions of valley flows as well as in wastewater canals and other energy recovery schemes, where the available head does not exceed 2 meters. The goal of this study is to develop hydraulically optimized propeller turbines for the micro hydro range with a particular focus on ease of manufacture. This paper presents a wide range of geometrical optimization steps carried out on a propeller runner, whose blades have been designed using the free vortex theory, and operating with a gross head from 1.5 to 2 m and discharge of approximately 75 l/s. It further illustrates 3 stages of geometrical modifications carried out on the runner with an objective of optimizing the runner performance. These modifications comprised of changes to the tip angles (both at the runner inlet and exit) as well as the hub angles (at the runner inlet) of the runner blades. The paper also presents an interesting theoretical methodology to analyze the effects of each optimization stage. This method looks at the relative changes to shaft power and discharge at constant head and speed and gives wonderful insight as to how the internal parameters like Euler shaft work and runner hydraulic losses are behaving with respect to each optimization stage. It was found that the performance of the runner was very sensitive to changes to exit tip angle. At two levels of modification, the discharge increased in the range of 15-30%, while shaft power increased in the range of 12-45%, thus influencing the efficiency characteristics. The results of the runner inlet tip modification were very interesting in that a very significant rise of turbine efficiency was recorded from 55% to 74% at the best efficiency point, which was caused by a reduced discharge consumption as well as a higher power generation. It was also found that the optimization study on a propeller runner has reasonably validated the estimates of the free vortex theory despite small deviations. The final runner configuration demonstrated a maximum efficiency of 74% ({+-}1.8%), which is very encouraging from the perspectives of micro hydro application. The paper concludes with recommendations of a series of optimization steps to increase the efficiency of the runner. It also recommends the attempt of Computational Fluid Dynamics both as a validation and optimization tool for future research on propeller runners. (author)

Singh, Punit; Nestmann, Franz [Institute for Water and River Basin Management (IWG), University of Karlsruhe, Kaiser Str. 12, D 76128 Karlsruhe (Germany)

2009-09-15T23:59:59.000Z

9

Final Reports on the Top Runner Target Product Standards (Japan) | Open  

Open Energy Info (EERE)

Final Reports on the Top Runner Target Product Standards (Japan) Final Reports on the Top Runner Target Product Standards (Japan) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Final Reports on the Top Runner Target Product Standards (Japan) Focus Area: Appliances & Equipment Topics: Policy Impacts Website: www.eccj.or.jp/top_runner/index.html Equivalent URI: cleanenergysolutions.org/content/final-reports-top-runner-target-produ Language: English Policies: "Deployment Programs,Regulations,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Industry Codes & Standards Regulations: "Appliance & Equipment Standards and Required Labeling,Building Codes" is not in the list of possible values (Agriculture Efficiency Requirements, Appliance & Equipment Standards and Required Labeling, Audit Requirements, Building Certification, Building Codes, Cost Recovery/Allocation, Emissions Mitigation Scheme, Emissions Standards, Enabling Legislation, Energy Standards, Feebates, Feed-in Tariffs, Fuel Efficiency Standards, Incandescent Phase-Out, Mandates/Targets, Net Metering & Interconnection, Resource Integration Planning, Safety Standards, Upgrade Requirements, Utility/Electricity Service Costs) for this property.

10

Weierstrass Pairs and Minimum Distance of Goppa Codes  

Science Journals Connector (OSTI)

We prove that elements of the Weierstrass gap set of a pair of points may be used to define a geometric Goppa code which has minimum distance greater than the usual lower bound. We determine the Weierstrass gap set of a pair of any two Weierstrass ... Keywords: Hermitian code, Weierstrass pair, Weierstrass point

Gretchen L. Matthews

2001-03-01T23:59:59.000Z

11

Haemers' Minimum Rank.  

E-Print Network [OSTI]

??Haemers' minimum rank was first defined by Willem Haemers in 1979. He created this graph parameter as an upper bound for the Shannon capacity of… (more)

Tims, Geoff

2013-01-01T23:59:59.000Z

12

The Minimum Price Contract  

E-Print Network [OSTI]

A minimum price contract is one of many tools a marketer may use to better manage price and production risk while trying to achieve financial goals and objectives. This publication discusses the advantages and disadvantages involved...

Waller, Mark L.; Amosson, Stephen H.; Welch, Mark; Dhuyvetter, Kevin C.

2008-10-17T23:59:59.000Z

13

Windy Gap Firming Project  

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

Infrastructure projects Interconnection OASIS OATT Windy Gap Firming Project, Final Environmental Impact Statement, DOEEIS-0370 (cooperating agency) Western's proposed...

14

Japan's Residential Energy Demand Outlook to 2030 Considering Energy Efficiency Standards"Top-Runner Approach"  

SciTech Connect (OSTI)

As one of the measures to achieve the reduction in greenhouse gas emissions agreed to in the"Kyoto Protocol," an institutional scheme for determining energy efficiency standards for energy-consuming appliances, called the"Top-Runner Approach," was developed by the Japanese government. Its goal is to strengthen the legal underpinnings of various energy conservation measures. Particularly in Japan's residential sector, where energy demand has grown vigorously so far, this efficiency standard is expected to play a key role in mitigating both energy demand growth and the associated CO2 emissions. This paper presents an outlook of Japan's residential energy demand, developed by a stochastic econometric model for the purpose of analyzing the impacts of the Japan's energy efficiency standards, as well as the future stochastic behavior of income growth, demography, energy prices, and climate on the future energy demand growth to 2030. In this analysis, we attempt to explicitly take into consideration more than 30 kinds of electricity uses, heating, cooling and hot water appliances in order to comprehensively capture the progress of energy efficiency in residential energy end-use equipment. Since electricity demand, is projected to exhibit astonishing growth in Japan's residential sector due to universal increasing ownership of electric and other appliances, it is important to implement an elaborate efficiency standards policy for these appliances.

Lacommare, Kristina S H; Komiyama, Ryoichi; Marnay, Chris

2008-05-15T23:59:59.000Z

15

Fiber optic gap gauge  

SciTech Connect (OSTI)

A lightweight, small size, high sensitivity gauge for indirectly measuring displacement or absolute gap width by measuring axial strain in an orthogonal direction to the displacement/gap width. The gap gauge includes a preferably titanium base having a central tension bar with springs connecting opposite ends of the tension bar to a pair of end connector bars, and an elongated bow spring connected to the end connector bars with a middle section bowed away from the base to define a gap. The bow spring is capable of producing an axial strain in the base proportional to a displacement of the middle section in a direction orthogonal to the base. And a strain sensor, such as a Fabry-Perot interferometer strain sensor, is connected to measure the axial strain in the base, so that the displacement of the middle section may be indirectly determined from the measurement of the axial strain in the base.

Wood, Billy E. (Livermore, CA); Groves, Scott E. (Brentwood, CA); Larsen, Greg J. (Brentwood, CA); Sanchez, Roberto J. (Pleasanton, CA)

2006-11-14T23:59:59.000Z

16

Generation gaps in engineering?  

E-Print Network [OSTI]

There is much enthusiastic debate on the topic of generation gaps in the workplace today; what the generational differences are, how to address the apparent challenges, and if the generations themselves are even real. ...

Kim, David J. (David Jinwoo)

2008-01-01T23:59:59.000Z

17

Windy Gap Firming Project  

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

Windy Gap Firming Project Windy Gap Firming Project Skip Navigation Links Transmission Functions Infrastructure projects Interconnection OASIS OATT Windy Gap Firming Project, Final Environmental Impact Statement, DOE/EIS-0370 (cooperating agency) Western's proposed action is to relocate approximately 3.8 miles of the existing Estes to Lyons 115-kilovolt transmission line, if the Chimney Hollow Reservoir alternative is constructed. The line would be moved outside the area proposed for the reservoir, and Western would ensure the new location would allow the agency to continue to operate and maintain it. Section 2.4.1.4 of the Final Environmental Impact Statement, Volume 1 provides more information on the transmission line relocation proposal. The U.S. Department of the Interior, Bureau of Reclamation is the Lead Agency for the National Environmental Policy Act Review. Cooperating agencies are Western, the U.S. Army Corps of Engineers and Grand County, Colo.

18

Uncertainties in Gapped Graphene  

E-Print Network [OSTI]

Motivated by graphene-based quantum computer we examine the time-dependence of the position-momentum and position-velocity uncertainties in the monolayer gapped graphene. The effect of the energy gap to the uncertainties is shown to appear via the Compton-like wavelength $\\lambda_c$. The uncertainties in the graphene are mainly contributed by two phenomena, spreading and zitterbewegung. While the former determines the uncertainties in the long-range of time, the latter gives the highly oscillation to the uncertainties in the short-range of time. The uncertainties in the graphene are compared with the corresponding values for the usual free Hamiltonian $\\hat{H}_{free} = (p_1^2 + p_2^2) / 2 M$. It is shown that the uncertainties can be under control within the quantum mechanical law if one can choose the gap parameter $\\lambda_c$ freely.

Eylee Jung; Kwang S. Kim; DaeKil Park

2011-07-27T23:59:59.000Z

19

Minimum Gas Service Standards (Ohio)  

Broader source: Energy.gov [DOE]

Natural gas companies in Ohio are required to follow the Minimum Gas Service Standards, which are set and enforced by the Public Utilities Commission of Ohio. These rules are found in chapter 4901...

20

Multiple gap photovoltaic device  

DOE Patents [OSTI]

A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

Dalal, Vikram L. (Newark, DE)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Colorado Gap Analysis  

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

Colorado Gap Analysis Colorado Gap Analysis 2 The Building Codes Assistance Project (BCAP) BCAP is a non-profit advocacy organization established in 1994 as a joint initiative of the Alliance to Save Energy, the American Council for an Energy-Efficient Economy, and the Natural Resources Defense Council. BCAP focuses on providing state and local governments in the U.S., as well as stakeholder organizations, with support on code adoption and implementation through direct assistance, research, data analysis, and coordination with other activities and allies. With over sixteen years of experience supporting numerous state energy offices and city building departments, along with tracking code activities across the country, BCAP is well-positioned to assist in local and statewide activity to advance

22

Energy Gap in Nuclear Matter  

Science Journals Connector (OSTI)

......research-article Articles Energy Gap in Nuclear Matter Takeshi Ishihara a...Research, Kokubunji, Tokyo An energy gap in nuclear matter is studied. The nucleon-nucleon...1966) pp. 1026-1042 Nuclear Force and Energy Gap in Finite Nuclei Hiroharu......

Takeshi Ishihara; Ryozo Tamagaki; Hajime Tanaka; Masaru Yasuno

1963-11-01T23:59:59.000Z

23

The minimum-uncertainty coherent states for Landau levels  

SciTech Connect (OSTI)

The Glauber minimum-uncertainty coherent states with two variables for Landau levels, based on the representation of Weyl-Heisenberg algebra by two different modes, have been studied about four decades ago. Here, we introduce new two-variable coherent states with minimum uncertainty relationship for Landau levels in three different methods: the infinite unitary representation of su(1, 1) is realized in two different methods, first, by consecutive levels with the same energy gaps and also with the same value for z-angular momentum quantum number, then, by shifting z-angular momentum mode number by two units while the energy level remaining the same. Besides, for su(2), whether by lowest Landau levels or Landau levels with lowest z-angular momentum, just one finite unitary representation is introduced. Having constructed the generalized Klauder-Perelomov coherent states, for any of the three representations, we obtain their Glauber coherency by displacement operator of Weyl-Heisenberg algebra.

Dehghani, A. [Physics Department, Payame Noor University, P. O. Box 19395-4697 Tehran (Iran, Islamic Republic of); Fakhri, H. [Department of Theoretical Physics and Astrophysics, Faculty of Physics, University of Tabriz, P. O. Box 51666-16471 Tabriz (Iran, Islamic Republic of); Mojaveri, B. [Department of Physics, Azarbaijan Shahid Madani University, P. O. Box 51745-406 Tabriz (Iran, Islamic Republic of)

2012-12-15T23:59:59.000Z

24

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Title Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Publication Type Conference Proceedings Year of Publication 2000 Authors Shugars, John, Philip Coleman, Christopher T. Payne, and Laura Van Wie McGrory Conference Name Proceedings from the 2000 ACEEE Summer Study on Energy Efficiency in Buildings Volume 10 Pagination 217-226 Date Published 01/2000 Abstract The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercialpackaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency standards. In this paper we document the static efficiencies ofcommercialpackaged air conditioners, explore the reasons behindthis efficiency gap, and assess opportunities for overcoming the barriers to efficiency improvements in these products.

25

GenII Gap Analysis  

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

GENII-Gap Analysis GENII-Gap Analysis Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: GENII Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety, and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 GENII Gap Analysis May 2004 Final Report INTENTIONALLY BLANK ii GENII Gap Analysis May 2004 Final Report FOREWORD This document provides an evaluation of the Software Quality Assurance (SQA) attributes of GENII, a radiological dispersion computer code, relative to established requirements. This evaluation, a "gap analysis", is performed to meet commitment 4.2.1.3 of the Department of

26

MACCS2 Final Gap Analysis  

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

MACCS2-Gap Analysis MACCS2-Gap Analysis Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: MACCS2 Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 MACCS2 Gap Analysis May 2004 Final Report INTENTIONALLY BLANK ii MACCS2 Gap Analysis May 2004 Final Report FOREWORD This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the radiological dispersion computer code, MACCS2, relative to established software requirements. This evaluation, a "gap analysis", is performed to meet commitment 4.2.1.3 of the

27

Gap and stripline combined monitor  

DOE Patents [OSTI]

A combined gap and stripline monitor device for measuring the intensity and position of a charged particle beam bunch in a beam pipe of a synchrotron radiation facility is disclosed. The monitor has first and second beam pipe portions with an axial gap therebetween. An outer pipe cooperates with the first beam pipe portion to form a gap enclosure, while inner strips cooperate with the first beam pipe portion to form a stripline monitor, with the stripline length being the same as the gap enclosure length. 4 figs.

Yin, Y.

1986-08-19T23:59:59.000Z

28

HEAT Loan Minimum Standards and Requirements  

Broader source: Energy.gov [DOE]

Presents additional resources on loan standards and requirements from Elise Avers' presentation on HEAT Loan Minimum Standards and Requirements.

29

Energy Consumption of Minimum Energy Coding in  

E-Print Network [OSTI]

Energy Consumption of Minimum Energy Coding in CDMA Wireless Sensor Networks Benigno Zurita Ares://www.ee.kth.se/control Abstract. A theoretical framework is proposed for accurate perfor- mance analysis of minimum energy coding energy consumption is analyzed for two coding schemes proposed in the literature: Minimum Energy coding

Johansson, Karl Henrik

30

Pneumatic gap sensor and method  

DOE Patents [OSTI]

An apparatus and method for monitoring and maintaining a predetermined width in the gap between a casting nozzle and a casting wheel, wherein the gap is monitored by means of at least one pneumatic gap sensor. The pneumatic gap sensor is mounted on the casting nozzle in proximity to the casting surface and is connected by means of a tube to a regulator and a transducer. The regulator provides a flow of gas through a restictor to the pneumatic gap sensor, and the transducer translates the changes in the gas pressure caused by the proximity of the casting wheel to the pneumatic gap sensor outlet into a signal intelligible to a control device. The relative positions of the casting nozzle and casting wheel can thereby be selectively adjusted to continually maintain a predetermined distance between their adjacent surfaces. The apparatus and method enables accurate monitoring of the actual casting gap in a simple and reliable manner resistant to the extreme temperatures and otherwise hostile casting environment.

Bagdal, Karl T. (Middletown, OH); King, Edward L. (Trenton, OH); Follstaedt, Donald W. (Middletown, OH)

1992-01-01T23:59:59.000Z

31

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners John Shugars, Consultant Philip Coleman, Lawrence BerkeleyNational Laboratory ChristopherPayne, Lawrence Berkeley National Laboratory Laura Van Wie McGrory, Lawrence Berkeley National Laboratory ABSTRACT The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercial packaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency

32

Bridging Gaps | Department of Energy  

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

Bridging Gaps Bridging Gaps Bridging Gaps Analysis to identify issues, best practices, and recommendations Implementation of modernization, infrastructure planning, and sustainability efforts Evaluation of planning practices to develop an adaptable method that considers revitalization and reuse Analysis of issues with transfers at less than fair market value and recommendations for improvement Evaluation of the Ten-Year (25-year) Site Plans for revitalization and strategic planning interests Tools to be incorporated into programmatic business models and processes Best-practices guide for energy projects Guidance and recommendations to improve the 10 CFR 770 process and less-than-fair-market-value transfers Tools/checklist to evaluate assets for reuse as part of planning

33

Virtual gap dielectric wall accelerator  

DOE Patents [OSTI]

A virtual, moving accelerating gap is formed along an insulating tube in a dielectric wall accelerator (DWA) by locally controlling the conductivity of the tube. Localized voltage concentration is thus achieved by sequential activation of a variable resistive tube or stalk down the axis of an inductive voltage adder, producing a "virtual" traveling wave along the tube. The tube conductivity can be controlled at a desired location, which can be moved at a desired rate, by light illumination, or by photoconductive switches, or by other means. As a result, an impressed voltage along the tube appears predominantly over a local region, the virtual gap. By making the length of the tube large in comparison to the virtual gap length, the effective gain of the accelerator can be made very large.

Caporaso, George James; Chen, Yu-Jiuan; Nelson, Scott; Sullivan, Jim; Hawkins, Steven A

2013-11-05T23:59:59.000Z

34

Energy Gap in Nuclear Matter  

Science Journals Connector (OSTI)

The magnitude of the energy gap in nuclear matter associated with a highly correlated ground state of of the type believed to be important in the theory of superconductivity has been evaluated theoretically. The integral equation of Cooper, Mills, and Sessler is linearized and transformed into a form suitable for numerical solution. The energy gap, calculated by using an appropriate single-particle potential and the Gammel-Thaler two-body potential, is found to be a very strong function of the density of nuclear matter, and of the effective mass at the Fermi surface. It is concluded that the magnitude of the energy gap for nuclear matter should not be compared directly with experimental values for finite nuclei, although the results suggest that if the theory is extended to apply to finite nuclei it probably would be in agreement with experiment.

V. J. Emery and A. M. Sessler

1960-07-01T23:59:59.000Z

35

Local Energy Gap in Deformed Carbon Nanotubes  

Science Journals Connector (OSTI)

......Local Energy Gap in Deformed Carbon Nanotubes Ken-ichi Sasaki 1 *) Yoshiyuki...gap along the axis of a deformed nanotube. We compare our energy gap results...experimental data on energy gaps in nanotubes and peapods. We also discuss the......

Ken-ichi Sasaki; Yoshiyuki Kawazoe; Riichiro Saito

2005-03-01T23:59:59.000Z

36

Domain Walls in Gapped Graphene  

Science Journals Connector (OSTI)

The electronic properties of a particular class of domain walls in gapped graphene are investigated. We show that they can support midgap states which are localized in the vicinity of the domain wall and propagate along its length. With a finite density of domain walls, these states can alter the electronic properties of gapped graphene significantly. If the midgap band is partially filled, the domain wall can behave like a one-dimensional metal embedded in a semiconductor and could potentially be used as a single-channel quantum wire.

G. W. Semenoff; V. Semenoff; Fei Zhou

2008-08-21T23:59:59.000Z

37

GAP OPENING BY EXTREMELY LOW-MASS PLANETS IN A VISCOUS DISK  

SciTech Connect (OSTI)

By numerically integrating the compressible Navier-Stokes equations in two dimensions, we calculate the criterion for gap formation by a very low mass (q {approx} 10{sup -4}) protoplanet on a fixed orbit in a thin viscous disk. In contrast with some previously proposed gap-opening criteria, we find that a planet can open a gap even if the Hill radius is smaller than the disk scale height. Moreover, in the low-viscosity limit, we find no minimum mass necessary to open a gap for a planet held on a fixed orbit. In particular, a Neptune-mass planet will open a gap in a minimum mass solar nebula with suitably low viscosity ({alpha} {approx}< 10{sup -4}). We find that the mass threshold scales as the square root of viscosity in the low mass regime. This is because the gap width for critical planet masses in this regime is a fixed multiple of the scale height, not of the Hill radius of the planet.

Duffell, Paul C.; MacFadyen, Andrew I., E-mail: pcd233@nyu.edu, E-mail: macfadyen@nyu.edu [Center for Cosmology and Particle Physics, New York University, 4 Washington Place, New York, NY 10003 (United States)

2013-05-20T23:59:59.000Z

38

Multiple input electrode gap controller  

DOE Patents [OSTI]

A method and apparatus for controlling vacuum arc remelting (VAR) furnaces by estimation of electrode gap based on a plurality of secondary estimates derived from furnace outputs. The estimation is preferably performed by Kalman filter. Adaptive gain techniques may be employed, as well as detection of process anomalies such as glows. 17 figs.

Hysinger, C.L.; Beaman, J.J.; Melgaard, D.K.; Williamson, R.L.

1999-07-27T23:59:59.000Z

39

Credible Research Designs for Minimum Wage Studies  

E-Print Network [OSTI]

adjusted Current Employment Statistics data from BLS. TheBureau of Labor Statistics’ Employment and Earnings Reports.and Statistics 92, 4: 945-64. [27] _________2013. “Minimum Wage Shocks, Employment

Allegretto, Sylvia; Dube, Arindrajit; Reich, Michael; Zipperer, Ben

2013-01-01T23:59:59.000Z

40

Microbial oceanography of anoxic oxygen minimum zones  

E-Print Network [OSTI]

Vast expanses of oxygen-deficient and nitrite-rich water define the major oxygen minimum zones (OMZs) of the global ocean. They support diverse microbial communities that influence the nitrogen economy of the oceans, ...

Ulloa, Osvaldo

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Minimum rank of graphs that allow loops.  

E-Print Network [OSTI]

??The traditional "minimum rank problem" for simple graphs associates a set of symmetric matrices, the zero-nonzero pattern of whose off-diagonal entries are described by the… (more)

Mikkelson, Rana C.

2008-01-01T23:59:59.000Z

42

Emplacement Gantry Gap Analysis Study  

SciTech Connect (OSTI)

To date, the project has established important to safety (ITS) performance requirements for structures, systems, and components (SSCs) based on the identification and categorization of event sequences that may result in a radiological release. These performance requirements are defined within the ''Nuclear Safety Design Bases for License Application'' (NSDB) (BSC 2005 [DIRS 171512], Table A-11). Further, SSCs credited with performing safety functions are classified as ITS. In turn, assurance that these SSCs will perform as required is sought through the use of consensus codes and standards. This gap analysis is based on the design completed for license application only. Accordingly, identification of ITS SSCs beyond those defined within the NSDB are based on designs that may be subject to further development during detail design. Furthermore, several design alternatives may still be under consideration to satisfy certain safety functions, and final selection will not be determined until further design development has occurred. Therefore, for completeness, alternative designs currently under consideration will be discussed throughout this study. This gap analysis will evaluate each code and standard identified within the ''Emplacement Gantry ITS Standards Identification Study'' (BSC 2005 [DIRS 173586]) to ensure each ITS performance requirement is fully satisfied. When a performance requirement is not fully satisfied, a gap is highlighted. This study will identify requirements to supplement or augment the code or standard to meet performance requirements. Further, this gap analysis will identify nonstandard areas of the design that will be subject to a design development plan. Nonstandard components and nonstandard design configurations are defined as areas of the design that do not follow standard industry practices or codes and standards. Whereby, assurance that an SSC will perform as required may not be readily sought though the use of consensus standards. This gap analysis is prepared by the Emplacement and Retrieval (E&R) project team and is intended for the sole use of the Engineering department in work regarding the emplacement gantry. Yucca Mountain Project personnel from the E&R project team should be consulted before use of this gap analysis for purposes other than those stated herein or by individuals other than authorized by the Engineering department.

R. Thornley

2005-05-27T23:59:59.000Z

43

The Runners-Up  

Science Journals Connector (OSTI)

...Cadarache ITER Web site Princeton Plasma Physics Laboratory (PPPL) PPPL, which will host the U.S. ITER project office, offers an introduction to ITER. PPPL's FIRE (Fusion Ignition Research Experiment) Maintains...

2005-12-23T23:59:59.000Z

44

The Runners-Up  

Science Journals Connector (OSTI)

...massive, ongoing operation at 11 sites in seven African countries...Related References and Web Sites Extrasolar? Extra Strange For...been like falling asleep in Kansas and waking up in Oz. For centuries...Related References and Web Sites Industrial Molecules, Tailor-Made...

2011-12-23T23:59:59.000Z

45

The Runners-Up  

Science Journals Connector (OSTI)

...Proliferation and Regulates the Proapoptotic Gene hid...spinning neutron star with a crushing magnetic field. Other observations...2003) R. Irion, Gamma Ray Bursts Get Magnetic, Science 300, 1499 (2003) Interesting...

The News; Editorial Staffs

2003-12-19T23:59:59.000Z

46

Subsidiary minimum principles for scattering parameters  

Science Journals Connector (OSTI)

We denote as a "primary minimum principle" one in which a quantity B of physical interest is represented as the minimum value with respect to variations in a trial function ?t of a functional F(?t); F then provides a variational upper bound on B. (The Rayleigh-Ritz principle for the ground-state energy of a system is a familiar example.) If F is quadratic in ?t, the variational property of F enables one to determine the linear parameters relatively easily, but the minimum property is required if the nonlinear parameters are to be determined in a way which allows for systematic improvement of ?t. We show here that for a wide class of problems for which primary minimum principles do not exist, useful and rigorous secondary or "subsidiary minimum principles" are available. That is, we construct a functional F?(?t) whose minimum value is reached for ?t equal to some function ? of dynamical interest. (The Rayleigh-Ritz method provides a subsidiary minimum principle for the approximate determination of the ground-state wave function of a system.) If B=B(?), then a study of F?(?t) provides a powerful tool for the estimation of ? and therefore B, though B(?t) is not normally a variational bound on B(?). Subsidiary minimum principles have recently been obtained for the approximation of the auxiliary functions that appear in the variational principle for the matrix element (?n, W?m), where ?n and ?m are bound-state wave functions and W is an arbitrary operator. Here we extend the method to the estimation of matrix elements of the Green's function g(?) of a bound system with ? below the continuum threshold energy. The response of the system to an external perturbation can be represented by matrix elements of this type. While no new results on the bound-state problem are obtained, our formulation is a convenient starting point for the further extension of the method to continuum problems. The new result obtained here is the derivation of a subsidiary minimum principle for the problem of scattering of a projectile by a target whose bound-state wave function is only imprecisely known. The subsidiary minimum principle allows for systematic improvement of the closed-channel component of the trial scattering wave function that appears in a Kohn-type variational calculation of the scattering amplitude.

Leonard Rosenberg and Larry Spruch

1974-12-01T23:59:59.000Z

47

Calibration curves for some standard Gap Tests  

SciTech Connect (OSTI)

The relative shock sensitivities of explosive compositions are commonly assessed using a family of experiments that can be described by the generic term ''Gap Test.'' Gap tests include a donor charge, a test sample, and a spacer, or gap, between two explosives charges. The donor charge, gap material, and test dimensions are held constant within each different version of the gap test. The thickness of the gap is then varied to find the value at which 50% of the test samples will detonate. The gap tests measure the ease with a high-order detonation can be established in the test explosive, or the ''detonability,'' of the explosive. Test results are best reported in terms of the gap thickness at the 50% point. It is also useful to define the shock pressure transmitted into the test sample at the detonation threshold. This requires calibrating the gap test in terms of shock pressure in the gap as a function of the gap thickness. It also requires a knowledge of the shock Hugoniot of the sample explosive. We used the 2DE reactive hydrodynamic code with Forest Fire burn rates for the donor explosives to calculate calibration curves for several gap tests. The model calculations give pressure and particle velocity on the centerline of the experimental set-up and provide information about the curvature and pulse width of the shock wave. 10 refs., 1 fig.

Bowman, A.L.; Sommer, S.C.

1989-01-01T23:59:59.000Z

48

Low band gap polymers Organic Photovoltaics  

E-Print Network [OSTI]

Low band gap polymers for Organic Photovoltaics Eva Bundgaard Ph.D. Dissertation Risø National Bundgaard Title: Low band gap polymers for Organic photovoltaics Department: The polymer department Report the area of organic photovoltaics are focusing on low band gap polymers, a type of polymer which absorbs

49

Generation Gaps in Engineering? David J. Kim  

E-Print Network [OSTI]

Generation Gaps in Engineering? by David J. Kim B.S., Computer Science and Engineering;3 Generation Gaps in Engineering? by David J. Kim Submitted to the System Design and Management Program on May in Engineering and Management ABSTRACT There is much enthusiastic debate on the topic of generation gaps

Gabrieli, John

50

Federal Energy Management Program: Minimum Efficiency Standards for  

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

Minimum Efficiency Minimum Efficiency Standards for Electric Motors to someone by E-mail Share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Facebook Tweet about Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Twitter Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Google Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Delicious Rank Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Digg Find More places to share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories

51

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

Office of Environmental Management (EM)

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: CORE COMPETENCY...

52

An Extended Dead-End Elimination Algorithm to Determine Gap-Free Lists of Low Energy States  

E-Print Network [OSTI]

modelling; global energy minimum; bacteriorhodopsin; protonation state; pH titration; X-DEE; dead of lowest free energy is the most prob- able and thus of primary interest in structural research. ProteinsAn Extended Dead-End Elimination Algorithm to Determine Gap-Free Lists of Low Energy States EDDA

Ullmann, G. Matthias

53

Minimum Energy Diagrams for Multieffect Distillation Arrangements  

E-Print Network [OSTI]

and the energy use from this process accounts for an estimated 3% of the world energy consumption.1 With rising on the overall plant energy consumption. The use of heat integration combined with complex config- urations distillation ar- rangements. An easy form of comparison for energy consumption is the minimum vapor flow rate

Skogestad, Sigurd

54

Minimum variance beamforming with soft response constraints  

Science Journals Connector (OSTI)

Soft constraints on the beamformer response to the signal are examined in the context of minimum variance beamforming. A quadratic constraint on the beamformer weights is used to control the mean-squared error between a desired response and the actual ...

B.D. van Veen

1991-09-01T23:59:59.000Z

55

Learning Minimum Volume Sets Clayton Scott  

E-Print Network [OSTI]

Learning Minimum Volume Sets Clayton Scott Statistics Department Rice University Houston, TX 77005 herein are primarily of theoretical interest, although they may be implemented e#eciently for certain measure based on S: # P (G) = (1/n) # n i=1 I(X i # G). Here I(·) is the indicator function. Set µ

Scott, Clayton

56

Functional Area Qualification Standard Gap Analysis Qualification Cards |  

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

Services » Assistance » Federal Technical Capability Program » Services » Assistance » Federal Technical Capability Program » Functional Area Qualification Standard Gap Analysis Qualification Cards Functional Area Qualification Standard Gap Analysis Qualification Cards Note: 1. Save the document from the website onto your PC and close it. 2. Open the document on your PC. Answer "No" to the question regarding whether to open the documents as read only. Chemical Processing Gap Construction Management Gap Criticality Safety Gap Emergency Management Gap Environmental Restoration Gap Facility Representative Gap Fire Protection Engineering Gap General Technical Base Gap Industrial Hygiene Gap Mechanical Systems Gap Nuclear Explosive Safety Study Gap Nuclear Safety Specialist Gap Occupational Safety Gap Quality Assurance Gap

57

Hotspot Gap Analysis Final 20070323  

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

HS-0003 HS-0003 Software Evaluation of Hotspot and DOE Safety Software Toolbox Recommendation U.S. Department of Energy Office of Health, Safety and Security 1000 Independence Avenue, S.W. Washington, DC 20585-2040 March, 2007 ii Foreword This report documents the outcome of an evaluation of the Safety Software Quality Assurance (SSQA) attributes of Hotspot, a health physics application, relative to the safety software requirements identified in DOE O 414.1C, Quality Assurance. This evaluation, a "gap analysis", is performed according to the implementation guide DOE G 414.1-4, and is a requisite for deciding whether Hotspot should be designated as a toolbox code for DOE's safety software Central Registry. Comments regarding this document should be addressed to:

58

Hydrothermal Exploration Data Gap Analysis Update  

Broader source: Energy.gov [DOE]

Hydrothermal Exploration Data Gap Analysis presentation by Kate Young, Dan Getman, and Ariel Esposito at the 2012 Peer Review Meeting on May 10, 2012

59

FAQS Gap Analysis Qualification Card – Occupational Safety  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

60

FAQS Gap Analysis Qualification Card – Radiation Protection  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Gas mixtures for spark gap closing switches  

DOE Patents [OSTI]

Gas mixtures for use in spark gap closing switches comprised of fluorocarbons and low molecular weight, inert buffer gases. To this can be added a third gas having a low ionization potential relative to the buffer gas. The gas mixtures presented possess properties that optimized the efficiency spark gap closing switches. 6 figs.

Christophorou, L.G.; McCorkle, D.L.; Hunter, S.R.

1987-02-20T23:59:59.000Z

62

Judith Gap Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Gap Wind Farm Gap Wind Farm Jump to: navigation, search Name Judith Gap Wind Farm Facility Judith Gap Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Invenergy Developer Invenergy Energy Purchaser Northwestern Energy Location South of Judith Gap MT Coordinates 46.6005°, -109.749° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.6005,"lon":-109.749,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

63

Narrow band gap amorphous silicon semiconductors  

DOE Patents [OSTI]

Disclosed is a narrow band gap amorphous silicon semiconductor comprising an alloy of amorphous silicon and a band gap narrowing element selected from the group consisting of Sn, Ge, and Pb, with an electron donor dopant selected from the group consisting of P, As, Sb, Bi and N. The process for producing the narrow band gap amorphous silicon semiconductor comprises the steps of forming an alloy comprising amorphous silicon and at least one of the aforesaid band gap narrowing elements in amount sufficient to narrow the band gap of the silicon semiconductor alloy below that of amorphous silicon, and also utilizing sufficient amounts of the aforesaid electron donor dopant to maintain the amorphous silicon alloy as an n-type semiconductor.

Madan, A.; Mahan, A.H.

1985-01-10T23:59:59.000Z

64

The minimum jet power and equipartition  

E-Print Network [OSTI]

We derive the minimum power of jets and their magnetic field strength based on their observed non-thermal synchrotron emission. The correct form of this method takes into account both the internal energy in the jet and the ion rest-mass energy associated with the bulk motion. The latter was neglected in a number of papers, which instead adopted the well-known energy-content minimization method. That method was developed for static sources, for which there is no bulk-motion component of the energy. In the case of electron power-law spectra with index >2 in ion-electron jets, the rest-mass component dominates. The minimization method for the jet power taking it into account was considered in some other work, but only based on either an assumption of a constant total synchrotron flux or a fixed range of the Lorentz factors. Instead, we base our method on an observed optically-thin synchrotron spectrum. We find the minimum jet power is independent of its radius when the rest-mass power dominates, which becomes th...

Zdziarski, Andrzej A

2014-01-01T23:59:59.000Z

65

Minimum-Energy Multicast Tree in Cognitive Radio Networks  

E-Print Network [OSTI]

Minimum-Energy Multicast Tree in Cognitive Radio Networks Wei Ren, Xiangyang Xiao, Qing Zhao algorithm with bounded performance guarantee for constructing the minimum-energy multicast tree, which by studying the impact of the traffic load of the primary network on the minimum-energy multicast tree. I

Islam, M. Saif

66

More insights into band gap graded a-SiGe:H solar cells by experimental and simulated data  

SciTech Connect (OSTI)

An experimental and numerical study of a-SiGe:H based solar cells with band gap graded i-layer in the shape of a V is presented. The variation of the location of the band gap minimum has strong influence on the solar cell performance. Comparisons of experimental and simulated data of the dark IV-behavior, IV-curves under illumination and the quantum efficiency allow insights into the transport and recombination behavior within the solar cell. The simulations reveal that the position as well as the charge state of the defects determine the device characteristics.

Zimmer, J.; Stiebig, H.; Foelsch, J.; Finger, F.; Eickhoff, T.; Wagner, H.

1997-07-01T23:59:59.000Z

67

Minimum Cost Operation Mode and Minimum Loss Operation Mode of Power System – Operation Mode Selection Based on Voltage Stability  

Science Journals Connector (OSTI)

Two formulae – an optimal P-Q generation formula for minimum system cost and an optimal MW allocation formula for minimum system loss – are described in this paper. The author defines two kinds of power system operation

Sang-Joong Lee

2006-01-01T23:59:59.000Z

68

Buffalo Gap Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Gap Wind Farm Gap Wind Farm Jump to: navigation, search Name Buffalo Gap Wind Farm Facility Buffalo Gap Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner AES Developer AES Energy Purchaser Direct Energy Location TX Coordinates 32.310556°, -100.149167° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.310556,"lon":-100.149167,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

69

Gaps in the Heisenberg-Ising model  

Science Journals Connector (OSTI)

We report on the closing of gaps in the ground state of the critical Heisenberg-Ising chain at momentum ?. For half-filling, the gap closes at special values of the anisotropy ?=cos(?/Q), where Q is an integer. We explain this behavior with the help of the Bethe ansatz and show that the gap scales as a power of the system size with a variable exponent depending on ?. We use a finite-size analysis to calculate this exponent in the critical region, supplemented by perturbation theory at ??0. For rational 1/r fillings, the gap is shown to be closed for all values of ? and the corresponding perturbation expansion in ? shows a remarkable cancellation of various diagrams.

Rudolf A. Römer; Hans-Peter Eckle; Bill Sutherland

1995-07-15T23:59:59.000Z

70

Efficient Band Gap Prediction for Solids  

E-Print Network [OSTI]

An efficient method for the prediction of fundamental band gaps in solids using density functional theory (DFT) is proposed. Generalizing the Delta self-consistent-field (?SCF [delta SCF]) method to infinite solids, the ...

Chan, Maria K.

71

Minimum Bias Triggers at ATLAS, LHC  

E-Print Network [OSTI]

In the first phase of LHC data-taking ATLAS will measure the charged-particle density at the initial center-of-mass energy of 10 TeV and then at 14 TeV. This will allow us improve our knowledge of soft QCD models and pin-down cross-sections of different classes of inelastic collisions at LHC energies. In particular, the dominant non-diffractive interaction is a key process to understanding QCD backgrounds when we reach higher luminosities. We highlight two minimum-bias triggers, sensitive to particles in complementary ranges in pseudo-rapidity, one based on signals from the Inner Detector, the other explicitly designed to trigger on inelastic processes. Studies of their trigger efficiencies as well as possible trigger biases are presented.

Regina Kwee

2008-12-02T23:59:59.000Z

72

Columbia River Component Data Gap Analysis  

SciTech Connect (OSTI)

This Data Gap Analysis report documents the results of a study conducted by Washington Closure Hanford (WCH) to compile and reivew the currently available surface water and sediment data for the Columbia River near and downstream of the Hanford Site. This Data Gap Analysis study was conducted to review the adequacy of the existing surface water and sediment data set from the Columbia River, with specific reference to the use of the data in future site characterization and screening level risk assessments.

L. C. Hulstrom

2007-10-23T23:59:59.000Z

73

Anomalous Doppler effects in phononic band gaps  

Science Journals Connector (OSTI)

Doppler effects in periodic acoustic media were studied theoretically and experimentally. Analytical formulas are derived using the Green’s function formalism. We found that a far field observer cannot hear the sound inside a band gap from a stationary source, but a moving source can be heard even if the frequency is inside the gap, and the Doppler shifts can be inverted or anomalously large.

Xinhua Hu; Zhihong Hang; Jensen Li; Jian Zi; C. T. Chan

2006-01-30T23:59:59.000Z

74

Gap between jets at the LHC  

SciTech Connect (OSTI)

We describe a NLL BFKL calculation implemented in the HERWIG MC of the gap between jets cross section, that represent a test of BFKL dynamics. We compare the predictions with recent measurements at the Tevatron and present predictions for the LHC. We also discuss the interesting process of looking for gap between jets in diffractive events when protons are detected in the ATLAS Forward Physics (AFP) detectors.

Royon, Christophe [CEA/IRFU/Service de physique des particules, CEA/Saclay, 91191 Gif-sur-Yvette cedex (France)

2013-04-15T23:59:59.000Z

75

Beam dumping system and abort gap  

E-Print Network [OSTI]

The performance of the beam dumping systems and the abort gap cleaning are reviewed in the context of the general machine protection system. Details of the commissioning experience and setting up, encountered equipment problems, the experience with and status of the eXternal Post Operational Checks (XPOC) and the importance of operational procedures are presented for the beam dumping system. The brief experience with the abort gap cleaning is also presented.

Uythoven, J

2010-01-01T23:59:59.000Z

76

Fact #609: February 8, 2010 The Transportation Petroleum Gap...  

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

09: February 8, 2010 The Transportation Petroleum Gap Fact 609: February 8, 2010 The Transportation Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed...

77

Fact #560: March 2, 2009 The Transportation Petroleum Gap | Department...  

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

0: March 2, 2009 The Transportation Petroleum Gap Fact 560: March 2, 2009 The Transportation Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed U.S....

78

Fact #687: August 8, 2011 The Transportation Petroleum Gap |...  

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

7: August 8, 2011 The Transportation Petroleum Gap Fact 687: August 8, 2011 The Transportation Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed U.S....

79

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries...  

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

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries. Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries. Abstract: Structure and electronic properties of...

80

Technical Standards, MELCOR - Gap Analysis - May 3, 2004 | Department...  

Energy Savers [EERE]

3, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MELCOR Gap Analysis This report documents the outcome of...

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Bridging the Gap between Fundamental Physics and Chemistry and...  

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

Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for HCCI Engines Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for...

82

Video summarization via minimum sparse reconstruction  

Science Journals Connector (OSTI)

Abstract The rapid growth of video data demands both effective and efficient video summarization methods so that users are empowered to quickly browse and comprehend a large amount of video content. In this paper, we formulate the video summarization task with a novel minimum sparse reconstruction (MSR) problem. That is, the original video sequence can be best reconstructed with as few selected keyframes as possible. Different from the recently proposed convex relaxation based sparse dictionary selection method, our proposed method utilizes the true sparse constraint L0 norm, instead of the relaxed constraint L 2 , 1 norm, such that keyframes are directly selected as a sparse dictionary that can well reconstruct all the video frames. An on-line version is further developed owing to the real-time efficiency of the proposed MSR principle. In addition, a percentage of reconstruction (POR) criterion is proposed to intuitively guide users in obtaining a summary with an appropriate length. Experimental results on two benchmark datasets with various types of videos demonstrate that the proposed methods outperform the state of the art.

Shaohui Mei; Genliang Guan; Zhiyong Wang; Shuai Wan; Mingyi He; David Dagan Feng

2015-01-01T23:59:59.000Z

83

Minimum Efficiency Standards for Electric Motors | Department of Energy  

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

Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors October 7, 2013 - 11:28am Addthis Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for general-purpose, single-speed, polyphase induction motors of 1 to 500 horsepower (hp). This new standard took effect in December 2010. The new minimum efficiency levels match FEMP's performance requirement for these motors. As a result of this increase in mandatory minimum standards and combined with the lack of significant availability of motors exceeding these standards, FEMP is suspending the purchasing specification for electric motors. Federal buyers may select for purchase any motor that meets design requirements.

84

Bridging The Gap 2013 | ornl.gov  

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

3 3 Mar 05 2013 03-05-2013 12:00 AM - 03-06-2013 05:00 PM Oak Ridge National Laboratory hosted the third annual Bridging the Gap on March 5-6, 2013. This event brought entrepreneurs, scientists, and technology transfer experts together to explore opportunities around the lab's most promising new technologies. Oak Ridge, TN CONTACT : Email: Cassie Lopez Phone:(865) 576-9294 Add to Calendar SHARE Bridging The Gap 2013 March 5-6, 2013 (Oak Ridge, TN) Tennessee A-B-C Conference Rooms (Building 5200) Oak Ridge National Laboratory hosted the third annual Bridging the Gap on March 5-6, 2013. This event brought entrepreneurs, scientists, and technology transfer experts together to explore opportunities around the lab's most promising new technologies. Keynote Address: Innovations at ORNL, Thom Mason

85

Olene Gap Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Olene Gap Geothermal Project Olene Gap Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Olene Gap Geothermal Project Project Location Information Coordinates 42.1725°, -121.62083333333° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.1725,"lon":-121.62083333333,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

86

A University of Alabama Axial-Gap Electric Motor Developmenty  

E-Print Network [OSTI]

CAVT A University of Alabama Axial-Gap Electric Motor Developmenty Research Center OBJECTIVE ­ Develop axial gap permanent-magnet electric Axial motor ­ Develop axial gap permanent-magnet electric motor topologies with high torque and power densities MOTIVATION ­ Axial-gap ("pancake") motors have

Carver, Jeffrey C.

87

Oscillation of Fourier Integrals with a spectral gap  

E-Print Network [OSTI]

May 30, 2003 ... In engineering literature, functions with a spectral gap are called high- .... High-

1910-30-71T23:59:59.000Z

88

Rapidity gap cross sections measured with the ATLAS detector in pp collisions at $\\sqrt{s}$ = 7 TeV  

E-Print Network [OSTI]

Pseudorapidity gap distributions in proton-proton collisions at sqrt(s) = 7 TeV are studied using a minimum bias data sample with an integrated luminosity of 7.1 inverse microbarns. Cross sections are measured differentially in terms of Delta eta F, the larger of the pseudorapidity regions extending to the limits of the ATLAS sensitivity, at eta = +/- 4.9, in which no final state particles are produced above a transverse momentum threshold p_T Cut. The measurements span the region 0 Xp), enhanced by double dissociation (pp -> XY) where the invariant mass of the lighter of the two dissociation systems satisfies M_Y ~ 3. The large rapidity gap data are used to constrain the value of the pomeron intercept appropriate to triple Regge models of soft diffraction. The cross section integrated over all gap sizes is compared with other LHC inelastic cross section measurements.

Aad, Georges; Abdallah, Jalal; Abdelalim, Ahmed Ali; Abdesselam, Abdelouahab; Abdinov, Ovsat; Abi, Babak; Abolins, Maris; AbouZeid, Ossama; Abramowicz, Halina; Abreu, Henso; Acerbi, Emilio; Acharya, Bobby Samir; Adamczyk, Leszek; Adams, David; Addy, Tetteh; Adelman, Jahred; Aderholz, Michael; Adomeit, Stefanie; Adragna, Paolo; Adye, Tim; Aefsky, Scott; Aguilar-Saavedra, Juan Antonio; Aharrouche, Mohamed; Ahlen, Steven; Ahles, Florian; Ahmad, Ashfaq; Ahsan, Mahsana; Aielli, Giulio; Akdogan, Taylan; ?kesson, Torsten Paul Ake; Akimoto, Ginga; Akimov, Andrei; Akiyama, Kunihiro; Alam, Mohammad; Alam, Muhammad Aftab; Albert, Justin; Albrand, Solveig; Aleksa, Martin; Aleksandrov, Igor; Alessandria, Franco; Alexa, Calin; Alexander, Gideon; Alexandre, Gauthier; Alexopoulos, Theodoros; Alhroob, Muhammad; Aliev, Malik; Alimonti, Gianluca; Alison, John; Aliyev, Magsud; Allport, Phillip; Allwood-Spiers, Sarah; Almond, John; Aloisio, Alberto; Alon, Raz; Alonso, Alejandro; Alvarez Gonzalez, Barbara; Alviggi, Mariagrazia; Amako, Katsuya; Amaral, Pedro; Amelung, Christoph; Ammosov, Vladimir; Amorim, Antonio; Amorós, Gabriel; Amram, Nir; Anastopoulos, Christos; Ancu, Lucian Stefan; Andari, Nansi; Andeen, Timothy; Anders, Christoph Falk; Anders, Gabriel; Anderson, Kelby; Andreazza, Attilio; Andrei, George Victor; Andrieux, Marie-Laure; Anduaga, Xabier; Angerami, Aaron; Anghinolfi, Francis; Anisenkov, Alexey; Anjos, Nuno; Annovi, Alberto; Antonaki, Ariadni; Antonelli, Mario; Antonov, Alexey; Antos, Jaroslav; Anulli, Fabio; Aoun, Sahar; Aperio Bella, Ludovica; Apolle, Rudi; Arabidze, Giorgi; Aracena, Ignacio; Arai, Yasuo; Arce, Ayana; Archambault, John-Paul; Arfaoui, Samir; Arguin, Jean-Francois; Arik, Engin; Arik, Metin; Armbruster, Aaron James; Arnaez, Olivier; Artamonov, Andrei; Artoni, Giacomo; Arutinov, David; Asai, Shoji; Asfandiyarov, Ruslan; Ask, Stefan; ?sman, Barbro; Asquith, Lily; Assamagan, Ketevi; Astbury, Alan; Astvatsatourov, Anatoli; Aubert, Bernard; Auge, Etienne; Augsten, Kamil; Aurousseau, Mathieu; Avolio, Giuseppe; Avramidou, Rachel Maria; Axen, David; Ay, Cano; Azuelos, Georges; Azuma, Yuya; Baak, Max; Baccaglioni, Giuseppe; Bacci, Cesare; Bach, Andre; Bachacou, Henri; Bachas, Konstantinos; Bachy, Gerard; Backes, Moritz; Backhaus, Malte; Badescu, Elisabeta; Bagnaia, Paolo; Bahinipati, Seema; Bai, Yu; Bailey, David; Bain, Travis; Baines, John; Baker, Oliver Keith; Baker, Mark; Baker, Sarah; Banas, Elzbieta; Banerjee, Piyali; Banerjee, Swagato; Banfi, Danilo; Bangert, Andrea Michelle; Bansal, Vikas; Bansil, Hardeep Singh; Barak, Liron; Baranov, Sergei; Barashkou, Andrei; Barbaro Galtieri, Angela; Barber, Tom; Barberio, Elisabetta Luigia; Barberis, Dario; Barbero, Marlon; Bardin, Dmitri; Barillari, Teresa; Barisonzi, Marcello; Barklow, Timothy; Barlow, Nick; Barnett, Bruce; Barnett, Michael; Baroncelli, Antonio; Barone, Gaetano; Barr, Alan; Barreiro, Fernando; Barreiro Guimarães da Costa, João; Bartoldus, Rainer; Barton, Adam Edward; Bartsch, Valeria; Bates, Richard; Batkova, Lucia; Batley, Richard; Battaglia, Andreas; Battistin, Michele; Bauer, Florian; Bawa, Harinder Singh; Beale, Steven; Beare, Brian; Beau, Tristan; Beauchemin, Pierre-Hugues; Beccherle, Roberto; Bechtle, Philip; Beck, Hans Peter; Becker, Sebastian; Beckingham, Matthew; Becks, Karl-Heinz; Beddall, Andrew; Beddall, Ayda; Bedikian, Sourpouhi; Bednyakov, Vadim; Bee, Christopher; Begel, Michael; Behar Harpaz, Silvia; Behera, Prafulla; Beimforde, Michael; Belanger-Champagne, Camille; Bell, Paul; Bell, William; Bella, Gideon; Bellagamba, Lorenzo; Bellina, Francesco; Bellomo, Massimiliano; Belloni, Alberto; Beloborodova, Olga; Belotskiy, Konstantin; Beltramello, Olga; Ben Ami, Sagi; Benary, Odette; Benchekroun, Driss; Benchouk, Chafik; Bendel, Markus; Benekos, Nektarios; Benhammou, Yan; Benhar Noccioli, Eleonora; Benitez Garcia, Jorge-Armando; Benjamin, Douglas; Benoit, Mathieu; Bensinger, James; Benslama, Kamal; Bentvelsen, Stan; Berge, David; Bergeaas Kuutmann, Elin; Berger, Nicolas; Berghaus, Frank; Berglund, Elina; Beringer, Jürg; Bernat, Pauline; Bernhard, Ralf; Bernius, Catrin; Berry, Tracey; Bertella, Claudia; Bertin, Antonio; Bertinelli, Francesco; Bertolucci, Federico; Besana, Maria Ilaria; Besson, Nathalie; Bethke, Siegfried; Bhimji, Wahid; Bianchi, Riccardo-Maria; Bianco, Michele; Biebel, Otmar; Bieniek, Stephen Paul; Bierwagen, Katharina; Biesiada, Jed; Biglietti, Michela; Bilokon, Halina; Bindi, Marcello; Binet, Sebastien; Bingul, Ahmet; Bini, Cesare; Biscarat, Catherine; Bitenc, Urban; Black, Kevin; Blair, Robert; Blanchard, Jean-Baptiste

2012-01-01T23:59:59.000Z

89

Hazardous Waste Minimum Distance Requirements (Connecticut) | Department of  

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

Minimum Distance Requirements (Connecticut) Minimum Distance Requirements (Connecticut) Hazardous Waste Minimum Distance Requirements (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations set minimum distance requirements between certain types of facilities that generate, process, store, and dispose of hazardous waste

90

Minimum concave cost flows in capacitated grid networks  

E-Print Network [OSTI]

We study the minimum concave cost flow problem over a two-dimensional grid network (CFG), where one dimension represents time periods and the other.

2014-03-31T23:59:59.000Z

91

Microbial metatranscriptomics in a permanent marine oxygen minimum zone  

E-Print Network [OSTI]

Simultaneous characterization of taxonomic composition, metabolic gene content and gene expression in marine oxygen minimum zones (OMZs) has potential to broaden perspectives on the microbial and biogeochemical dynamics ...

Stewart, Frank J.

92

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

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

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: CORE COMPETENCY TRAINING REQUIREMENTS: CA Cybersecurity Program Manager (CSPM...

93

Lower Bounds for the Quadratic Minimum Spanning Tree Problem ...  

E-Print Network [OSTI]

Abstract. The Minimum Spanning Tree Problem (MSTP) is one of the most known ... munication, and energy networks, where linear costs account for the use or ...

2014-09-23T23:59:59.000Z

94

Optimization Online - Guaranteed Minimum-Rank Solutions of ...  

E-Print Network [OSTI]

Jun 28, 2007 ... Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization. Benjamin Recht(brecht ***at*** caltech.edu)

Benjamin Recht

2007-06-28T23:59:59.000Z

95

Natural Gas Engine Development Gaps (Presentation)  

SciTech Connect (OSTI)

A review of current natural gas vehicle offerings is presented for both light-duty and medium- and heavy-duty applications. Recent gaps in the marketplace are discussed, along with how they have been or may be addressed. The stakeholder input process for guiding research and development needs via the Natural Gas Vehicle Technology Forum (NGVTF) to the U.S. Department of Energy and the California Energy Commission is reviewed. Current high-level natural gas engine development gap areas are highlighted, including efficiency, emissions, and the certification process.

Zigler, B.T.

2014-03-01T23:59:59.000Z

96

Closing Gaps in Modeling Multifamily Retrofits  

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

Building America Technical Update Meeting Denver, Colorado April 30, 2013 Jordan Dentz, The Levy Partnership., Inc. Closing Gaps in Modeling Multifamily Retrofits Advanced Residential Integrated Energy Solutions Overview * Multifamily modeling inputs (BA House Simulation Protocols) * Important multifamily measures * Other MF gaps Vital to meet 50% goals and therefore important to include in Building America's multifamily modeling capabilities Model Inputs * Heating set point * Cooling set point * Behavior assumptions 3 Heating Set Point - Central Systems * House simulation protocol assumes 71°F * Overheating is common * Approach: adjust modeled heating set point - how much? * Average heating season indoor temperature was 76°F in a sample of 18 buildings (ARIES 2013a)

97

Improved gap size estimation for scaffolding algorithms  

Science Journals Connector (OSTI)

......and 950 bp. The contigs were set to a fixed size of 3000 bp...three read libraries and four sets of contigs). The results of...parts of the distribution fail to cover the gap and only the longest...we simulated four different sets of contigs from the genome with......

Kristoffer Sahlin; Nathaniel Street; Joakim Lundeberg; Lars Arvestad

2012-09-01T23:59:59.000Z

98

Energy Gaps in a Spacetime Crystal  

E-Print Network [OSTI]

This paper presents an analysis of the band structure of a spacetime potential lattice created by a standing electromagnetic wave. We show that there are energy band gaps. We estimate the effect, and propose a measurement that could confirm the existence of such phenomena.

L. P. Horwitz; E. Z. Engelberg

2009-11-08T23:59:59.000Z

99

FINAL REPORT ON GDE GAP CELL  

SciTech Connect (OSTI)

A project has been undertaken to develop an electrochemical cell and support equipment for evaluation of a gas diffusion electrode-based, narrow-electrolyte-gap anode for SO{sub 2} oxidation in the hydrogen production cycle of the hybrid sulfur (HyS) process. The project supported the HyS development program at the Savannah River National Lab (SRNL). The benefits of using a gas diffusion electrode in conjunction with the narrow anolyte gap are being determined through electrochemical polarization testing under a variety conditions, and by comparison to results produced by SRNL and others using anode technologies that have no anolyte gap. These test results indicate that the NGA cell has low resistance suitable for use in the HyS electrolyzer, exhibits good efficiency at high current densities compared to the direct feed HyS electrolyzer, and indicates robust performance in extended testing over 65 hours. Seepage episodes were mostly caused by port clogging, which can be mitigated in future designs through minor modifications to the hardware. Significant reductions in sulfur crossover have not yet been demonstrated in the NGA configuration compared to in-house direct feed testing, but corroborative sulfur layer analysis is as yet incomplete. Further testing in a single-pass anolyte configuration is recommended for complete evaluation of steady-state electrochemical efficiency and SO{sub 2} crossover in the narrow gap configuration.

Herman, D.; Summers, W.; Danko, E.

2009-09-28T23:59:59.000Z

100

Spark gap device for precise switching  

DOE Patents [OSTI]

A spark gap device for precise switching of an energy storage capacitor into an exploding bridge wire load is disclosed. Niobium electrodes having a melting point of 2,415 degrees centrigrade are spaced apart by an insulating cylinder to define a spark gap. The electrodes are supported by conductive end caps which, together with the insulating cylinder, form a hermetically sealed chamber filled with an inert, ionizable gas, such as pure xenon. A quantity of solid radioactive carbon-14 within the chamber adjacent the spark gap serves as a radiation stabilizer. The sides of the electrodes and the inner wall of the insulating cylinder are spaced apart a sufficient distance to prevent unwanted breakdown initiation. A conductive sleeve may envelop the outside of the insulating member from the midpoint of the spark gap to the cap adjacent the cathode. The outer metallic surfaces of the device may be coated with a hydrogen-impermeable coating to lengthen the shelf life and operating life of the device. The device breaks down at about 1,700 volts for input voltage rates up to 570 volts/millisecond and allows peak discharge currents of up to 3,000 amperes from a 0.3 microfarad energy storage capacitor for more than 1,000 operations.

Boettcher, Gordon E. (Albuquerque, NM)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Spark gap device for precise switching  

DOE Patents [OSTI]

A spark gap device for precise switching of an energy storage capacitor into an exploding bridge wire load is disclosed. Niobium electrodes having a melting point of 2,415 degrees centigrade are spaced apart by an insulating cylinder to define a spark gap. The electrodes are supported by conductive end caps which, together with the insulating cylinder, form a hermetically sealed chamber filled with an inert, ionizable gas, such as pure xenon. A quantity of solid radioactive carbon-14 within the chamber adjacent the spark gap serves as a radiation stabilizer. The sides of the electrodes and the inner wall of the insulating cylinder are spaced apart a sufficient distance to prevent unwanted breakdown initiation. A conductive sleeve may envelop the outside of the insulating member from the midpoint of the spark gap to the cap adjacent the cathode. The outer metallic surfaces of the device may be coated with a hydrogen-impermeable coating to lengthen the shelf life and operating life of the device. The device breaks down at about 1,700 volts for input voltage rates up to 570 volts/millisecond and allows peak discharge currents of up to 3,000 amperes from a 0.3 microfarad energy storage capacitor for more than 1,000 operations. 3 figs.

Boettcher, G.E.

1984-10-02T23:59:59.000Z

102

Minimum-cost quantum measurements for quantum information  

E-Print Network [OSTI]

Knowing about optimal quantum measurements is important for many applications in quantum information and quantum communication. However, deriving optimal quantum measurements is often difficult. We present a collection of results for minimum-cost quantum measurements, and give examples of how they can be used. Among other results, we show that a minimum-cost measurement for a set of given pure states is formally equivalent to a minimum-error measurement for mixed states of those same pure states. For pure symmetric states it turns out that for a certain class of cost matrices, the minimum-cost measurement is the square-root measurement. That is, the optimal minimum-cost measurement is in this case the same as the minimum-error measurement. Finally, we consider sequences of individual ``local" systems, and examine when the global minimum-cost measurement is a sequence of optimal local measurements. We also consider an example where the global minimum-cost measurement is, perhaps counter-intuitively, not a sequence of local measurements, and discuss how this is related to related to the Pusey-Barrett-Rudolph argument for the nature of the wave function.

Petros Wallden; Vedran Dunjko; Erika Andersson

2013-12-18T23:59:59.000Z

103

A Parallel Algorithm for Approximating the Minimum Cycle Cover  

E-Print Network [OSTI]

approximation algorithm for the problem of finding a minimum cycle cover. A cycle cover is a set of cycles cover [1, 7, 8]. The basis for our approximation algorithm is a routine to find a maximal set of edgeA Parallel Algorithm for Approximating the Minimum Cycle Cover Philip Klein \\Lambda Aiken

Yang, Junfeng

104

Polynomial Time Algorithms for Minimum Energy Scheduling Philippe Baptiste1  

E-Print Network [OSTI]

algorithm for computing the minimum energy schedule when all jobs have unit length. 1 Introduction PowerPolynomial Time Algorithms for Minimum Energy Scheduling Philippe Baptiste1 , Marek Chrobak2 policies is to reduce the amount of energy consumed by computer systems while maintaining satisfactory

Chrobak, Marek

105

Algorithms to Compute Minimum Cycle Basis in Directed Graphs #  

E-Print Network [OSTI]

, . . . ,C d whose incidence vectors permit a unique linear combination of the incidence vector of any cycleAlgorithms to Compute Minimum Cycle Basis in Directed Graphs # Telikepalli Kavitha + Kurt Mehlhorn # Abstract We consider the problem of computing a minimum cycle basis in a di­ rected graph G with m arcs

Mehlhorn, Kurt

106

Approximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks  

E-Print Network [OSTI]

and a set of destination nodes, the problem is to build a minimum-energy multicast tree for the requestApproximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks Weifa Liang, Senior Member, IEEE Abstract--A wireless ad hoc network consists of mobile nodes that are equipped with energy

Liang, Weifa

107

Minimum cost spanning tree problems with indierent agents Christian Trudeau  

E-Print Network [OSTI]

Minimum cost spanning tree problems with indi¤erent agents Christian Trudeau Economics Department, University of Windsor November 5, 2013 Abstract We consider an extension of minimum cost spanning tree (mcst) problems where some agents do not need to be connected to the source, but might reduce the cost of others

Virginia Tech

108

Bridging the Gap 2011 | ornl.gov  

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

1 1 Apr 05 2011 04-05-2011 08:00 AM - 04-06-2011 05:00 PM Oak Ridge National Laboratory's Partnerships Directorate will host Bridging the Gap, a unique technology commercialization event, April 5-6 at Oak Ridge National Laboratory. Oak Ridge, TN Oak Ridge National Laboratory CONTACT : Email: Cassie Lopez Phone:(865) 576-9294 Add to Calendar SHARE Oak Ridge National Laboratory's Partnerships Directorate will host Bridging the Gap, a unique technology commercialization event, April 5-6 at Oak Ridge National Laboratory. The event will provide investors and entrepreneurs opportunities to learn about promising ORNL technologies available for license and to hear from ORNL licensees seeking growth capital. There will also be opportunities to tour ORNL's world-class research facilities and network with some of the

109

Bridging the Gap: Linking Simulation and Testing  

SciTech Connect (OSTI)

The Materials Genome Initiative (MGI) which is a key enabler for the Advanced Manufacturing Partnership, announced in 2011 by U.S. President Barack Obama, was established to accelerate the development and deployment of advanced materials. The MGI is driven by the need to "bridge the gap" between (I) experimental results and computational analysis to enable the rapid development and validation of new mateirals, and (II) the processes required to convert these materials into useable goods.

Krajewski, Paul E.; Carsley, John; Stoudt, Mark R.; Hovanski, Yuri

2012-09-01T23:59:59.000Z

110

SHEEP MOUNTAIN URANIUM PROJECT CROOKS GAP, WYOMING  

E-Print Network [OSTI]

;PROJECT OVERVIEW ·Site Location·Site Location ·Fremont , Wyoming ·Existing Uranium Mine Permit 381C·Existing Uranium Mine Permit 381C ·Historical Operation ·Western Nuclear Crooks Gap Project ·Mined 1956 ­ 1988 and Open Pit Mining ·Current Mine Permit (381C) ·Updating POO, Reclamation Plan & Bond ·Uranium Recovery

111

Entanglement Sudden Death in Band Gaps  

E-Print Network [OSTI]

Using the pseudomode method, we evaluate exactly time-dependent entanglement for two independent qubits, each coupled to a non-Markovian structured environment. Our results suggest a possible way to control entanglement sudden death by modifying the qubit-pseudomode detuning and the spectrum of the reservoirs. Particularly, in environments structured by a model of a density-of-states gap which has two poles, entanglement trapping and prevention of entanglement sudden death occur in the weak-coupling regime.

Ying-Jie Zhang

2009-11-10T23:59:59.000Z

112

Fabrication of photonic band gap materials  

DOE Patents [OSTI]

A method for forming a periodic dielectric structure exhibiting photonic band gap effects includes forming a slurry of a nano-crystalline ceramic dielectric or semiconductor material and monodisperse polymer microspheres, depositing a film of the slurry on a substrate, drying the film, and calcining the film to remove the polymer microspheres therefrom. The film may be cold-pressed after drying and prior to calcining. The ceramic dielectric or semiconductor material may be titania, and the polymer microspheres may be polystyrene microspheres.

Constant, Kristen (Ames, IA); Subramania, Ganapathi S. (Ames, IA); Biswas, Rana (Ames, IA); Ho, Kai-Ming (Ames, IA)

2002-01-15T23:59:59.000Z

113

Rules Establishing Minimum Standards Relating to Location, Design,  

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

Rules Establishing Minimum Standards Relating to Location, Design, Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Rhode Island Program Type Environmental Regulations

114

NSLS prototype small-gap undulator (PSGU)  

SciTech Connect (OSTI)

The NSLS Prototype Small-Gap Undulator (PSGU) will serve as a tool to study lifetime degradation and the onset of beam instabilities as the beam duct aperture is decreased. The device will consist of variable-gap vacuum vessel had a permanent magnet undulator, with independent magnet-gap control. The vacuum vessel design attempts to minimize both residual gas pressures and beam impedances. The undulator will be 320 mm long and utilizes a pure-permanent-magnet structure with 6 blocks per 16 mm period. For a nominal operating aperture of 4 mm, PSGU will produce a peak brightness in the fundamental and third harmonic of 7 {times} 10{sup 16} and 1 {times} 10{sup 16} photons{sm bullet}sec{sup {minus}1}{sm bullet}mrad{sup {minus}2}mm{sup {minus}2}{sm bullet}(0.1% BW){sup {minus}1} at photon energies of 2.5 keV and 7.5 keV, respectively. 5 refs., 3 figs., 2 tabs.

Stefan, P.M.; Solomon, L.; Krinsky, S. (Brookhaven National Lab., Upton, NY (United States)); Rakowsky, G. (Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.)

1991-01-01T23:59:59.000Z

115

Technical Standards, GENII- Gap Analsis - May 3, 2004 | Department of  

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

Technical Standards, GENII- Gap Analsis - May 3, 2004 Technical Standards, GENII- Gap Analsis - May 3, 2004 Technical Standards, GENII- Gap Analsis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: GENII Gap Analysis The GENII software, for radiological dispersion and consequence analysis, is one of the codes designated for the toolbox. To determine the actions needed to bring the GENII code into compliance with the SQA qualification criteria, and develop an estimate of the resources required to perform the upgrade, the Implementation Plan has committed to sponsoring a code-specific gap analysis document. Technical Standards, GENII- Gap Analsis More Documents & Publications Guidance on GENII computer code - July 6, 2004 Technical Standards, ALOHA-Gap Analysis - May 3, 2004 Technical Standards, MELCOR - Gap Analysis - May 3

116

Fact #610: February 15, 2010 All Sectors' Petroleum Gap | Department...  

Energy Savers [EERE]

10: February 15, 2010 All Sectors' Petroleum Gap Fact 610: February 15, 2010 All Sectors' Petroleum Gap Before 1989 the U.S. produced enough petroleum to meet the needs of the...

117

Fact #688: August 15, 2011 All Sectors' Petroleum Gap | Department...  

Energy Savers [EERE]

8: August 15, 2011 All Sectors' Petroleum Gap Fact 688: August 15, 2011 All Sectors' Petroleum Gap Before 1989 the U.S. produced enough petroleum to meet the needs of the...

118

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Wednesday, 26 March 2008 00:00 Prospective challengers to...

119

Planar graphene-narrow-gap semiconductor-graphene heterostructure  

Science Journals Connector (OSTI)

A planar heterostructure composed of two graphene films between which a narrow-gap semiconductor ... paradox is absent when conical points of the graphene Brillouin zone are in the band gap...

P. V. Ratnikov; A. P. Silin

2008-11-01T23:59:59.000Z

120

To Bridge LEDs' Green Gap, Scientists Think Small  

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

To Bridge LEDs' Green Gap, Scientists Think Small To Bridge LEDs' Green Gap, Scientists Think Small Nanostructures Half a DNA Strand-Wide Show Promise for Efficient LEDs April 4,...

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Substrate-induced band gap opening in epitaxial graphene  

E-Print Network [OSTI]

H.A. Electronic states of graphene nanoribbons studied withS.G. Louie. Energy gaps in graphene nanoribbons. Phys. Rev.band-gap engineering of graphene nanoribbons. Phys. Rev.

2008-01-01T23:59:59.000Z

122

Technical Standards, MACCS2, Gap Analysis - May 3, 2004 | Department...  

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

3, 2004 Technical Standards, MACCS2, Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MACCS2 Gap Analysis The MACCS2 software, for radiological...

123

Functional Area Qualification Standard Gap Analysis Qualification Cards  

Broader source: Energy.gov [DOE]

FAQS Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

124

Minimum Purchase Price Regulations (Prince Edward Island, Canada)  

Broader source: Energy.gov [DOE]

The Minimum Purchase Price Regulations establish the price which utilities must pay for power produced by large-scale renewable energy generators – that is those capable of producing more than 100...

125

Minimum Stream Flow and Water Sale Contracts (Indiana)  

Broader source: Energy.gov [DOE]

The Indiana Natural Resources Commission may provide certain minimum quantities of stream flow or sell water on a unit pricing basis for water supply purposes from the water supply storage in...

126

Planning of Minimum-Time Trajectories for Robot Arms  

E-Print Network [OSTI]

The minimum-time for a robot arm has been a longstanding and unsolved problem of considerable interest. We present a general solution to this problem that involves joint-space tesselation, a dynamic time-scaling ...

Sahar, Gideon

1984-11-01T23:59:59.000Z

127

Selection of minimum earthquake intensity in calculating pipe failure probabilities  

SciTech Connect (OSTI)

In a piping reliability analysis, it is sometimes necessary to specify a minimum ground motion intensity, usually the peak acceleration, below which the ground motions are not considered as earthquakes and, hence, are neglected. The calculated probability of failure of a piping system is dependent on this selected minimum earthquake intensity chosen for the analysis. A study was conducted to determine the effects of the minimum earthquake intensity on the probability of pipe failure. The results indicated that the probability of failure of the piping system is not very sensitive to the variations of the selected minimum peak ground acceleration. However, it does have significant effects on various scenarios that make up the system failure.

Lo, T.Y.

1985-01-01T23:59:59.000Z

128

Ninety - Two Percent Minimum Heater Efficiency By 1980  

E-Print Network [OSTI]

Technology is now available to increase heater efficiencies to 92 percent and more. By 1980, this technology will be field proven and corrosion and reliability problems identified and resolved. Recent studies have shown that a minimum efficiency...

Mieth, H. C.; Hardie, J. E.

1980-01-01T23:59:59.000Z

129

Theoretical Minimum Energy Use of a Building HVAC System  

E-Print Network [OSTI]

This paper investigates the theoretical minimum energy use required by the HVAC system in a particular code compliant office building. This limit might be viewed as the "Carnot Efficiency" for HVAC system. It assumes that all ventilation and air...

Tanskyi, O.

2011-01-01T23:59:59.000Z

130

TOWARD THE MINIMUM INNER EDGE DISTANCE OF THE HABITABLE ZONE  

E-Print Network [OSTI]

We explore the minimum distance from a host star where an exoplanet could potentially be habitable in order not to discard close-in rocky exoplanets for follow-up observations. We find that the inner edge of the Habitable ...

Zsom, Andras

131

Intelligent Assistants for Filling Critical Gaps in GIS  

E-Print Network [OSTI]

Intelligent Assistants for Filling Critical Gaps in GIS A Research Program April 1992 David Lanter, Intelligent Assistants for Filling Critical Gaps In GIS, was sponsored by Southern California Edison Company: · An analysis of critical gaps in current geographic information systems (GIS) that impede their use for spatial

California at Santa Barbara, University of

132

Spheromak as a relaxed state with minimum dissipation  

Science Journals Connector (OSTI)

The principle of minimum dissipation of energy is utilized to obtain the spheromak configuration as a relaxed state. The Euler-Lagrange equation for the minimum dissipative relaxed state is solved in terms of Chandrasekhar-Kendall eigenfunctions analytically generalized in the complex domain. This state is non-force-free and further shows the nonconstancy of the ratio of parallel current to the magnetic field.

B. Dasgupta; M. S. Janaki; R. Bhattacharyya; P. Dasgupta; T. Watanabe; T. Sato

2002-03-25T23:59:59.000Z

133

Magneto-transport properties of gapped graphene  

Science Journals Connector (OSTI)

Based on the Kubo formula, we have studied the electron transport properties of a gapped graphene in the presence of a strong magnetic field. By solving the Dirac equation, we find that the Landau level spectra in two valleys differ from each other in that the n = 0 level in the K valley is located at top of the valence band, whereas it is at the bottom of the conduction band in the K' valley. Thus, in an individual valley, the symmetry between conduction and valence bands is broken by the presence of a magnetic field. By using the self-consistent Born approximation to treat the long range potential scattering, we formulate the diagonal and the Hall conductivities in terms of the Green function. To perform the numerical calculation, we find that a large bandgap can suppress the quantum Hall effect, owing to the enhancement of the bandgap squeezing the spacing between the low-lying Landau levels. On the other hand, if the bandgap is not very large, the odd integer quantum Hall effect experimentally, observed in the gapless graphene, remains in the gapped one. However, such a result does not indicate the half integer quantum Hall effect in an individual valley of the gapped graphene. This is because the heights of the Hall plateaux in either valley can be continuously tuned by the variation of the bandgap. More interestingly, we find that the height of the diagonal conductivity peak corresponding to the n = 0 Landau level is independent of the bandgap if the scattering is not very strong. In the weak scattering limit, we demonstrate analytically that such a peak takes a universal value e2/(h?), regardless of the bandgap.

Liwei Jiang; Yisong Zheng; Haidong Li; Honghai Shen

2010-01-01T23:59:59.000Z

134

Note On The Maximal Primes Gaps  

E-Print Network [OSTI]

This note presents a result on the maximal prime gap of the form p_(n+1) - p_n 0 is a constant, for any arbitrarily small real number e > 0, and all sufficiently large integer n > n_0. Equivalently, the result shows that any short interval [x, x + y], y => C(log x)^(1+e), contains prime numbers for all sufficiently large real numbers x => x_0 unconditionally. An application demonstrates that a prime p => x > 2 can be determined in deterministic polynomial time O(log(x)^8).

N. A. Carella

2015-02-05T23:59:59.000Z

135

Turbine blade tip gap reduction system  

SciTech Connect (OSTI)

A turbine blade sealing system for reducing a gap between a tip of a turbine blade and a stationary shroud of a turbine engine. The sealing system includes a plurality of flexible seal strips extending from a pressure side of a turbine blade generally orthogonal to the turbine blade. During operation of the turbine engine, the flexible seal strips flex radially outward extending towards the stationary shroud of the turbine engine, thereby reducing the leakage of air past the turbine blades and increasing the efficiency of the turbine engine.

Diakunchak, Ihor S.

2012-09-11T23:59:59.000Z

136

Complexified cones. Spectral gaps and variational principles  

E-Print Network [OSTI]

We consider contractions of complexified real cones, as recently introduced by Rugh in [Rugh10]. Dubois [Dub09] gave optimal conditions to determine if a matrix contracts a canonical complex cone. First we generalize his results to the case of complex operators on a Banach space and give precise conditions for the contraction and an improved estimate of the size of the associated spectral gap. We then prove a variational formula for the leading eigenvalue similar to the Collatz-Wielandt formula for a real cone contraction. Morally, both cases boil down to the study of suitable collections of 2 by 2 matrices and their contraction properties on the Riemann sphere.

Dubois, Loïc

2010-01-01T23:59:59.000Z

137

Ideal Soliton Environment Using Parametric Band Gaps  

Science Journals Connector (OSTI)

Simultaneous solitary wave solutions for laser propagation in nonlinear parametric media with up to ( 3+1) dimensions are proved to exist. The combination of the large dispersion of a Bragg grating and the strong nonlinearity of ?(2) optical material results in stable behavior with short interaction distances and low power requirements. The solutions are obtained by using the effective mass approximation to reduce the coupled propagation equations to those describing a dispersive parametric nonlinear waveguide, and are verified by solving the complete set of coupled band-gap equations numerically.

H. He and P. D. Drummond

1997-06-09T23:59:59.000Z

138

Extended Supersymmetry in Gapped and Superconducting Graphene  

E-Print Network [OSTI]

In view of the many quantum field theoretical descriptions of graphene in $2+1$ dimensions, we present another field theoretical feature of graphene, in the presence of defects. Particularly, we shall be interested in gapped graphene in the presence of a domain wall and also for superconducting graphene in the presence of a vortex. As we explicitly demonstrate, the gapped graphene electrons that are localized on the domain wall are associated with four $N=2$ one dimensional supersymmetries, with each pair combining to form an extended $N=4$ supersymmetry with non-trivial topological charges. The case of superconducting graphene is more involved, with the electrons localized on the vortex being associated with $n$ one dimensional supersymmetries, which in turn combine to form an $N=2n$ extended supersymmetry with no-trivial topological charges. As we shall prove, all supersymmetries are unbroken, a feature closely related to the number of the localized fermions and also to the exact form of the associated oper...

Oikonomou, V K

2014-01-01T23:59:59.000Z

139

Extended Supersymmetry in Gapped and Superconducting Graphene  

E-Print Network [OSTI]

In view of the many quantum field theoretical descriptions of graphene in $2+1$ dimensions, we present another field theoretical feature of graphene, in the presence of defects. Particularly, we shall be interested in gapped graphene in the presence of a domain wall and also for superconducting graphene in the presence of a vortex. As we explicitly demonstrate, the gapped graphene electrons that are localized on the domain wall are associated with four $N=2$ one dimensional supersymmetries, with each pair combining to form an extended $N=4$ supersymmetry with non-trivial topological charges. The case of superconducting graphene is more involved, with the electrons localized on the vortex being associated with $n$ one dimensional supersymmetries, which in turn combine to form an $N=2n$ extended supersymmetry with no-trivial topological charges. As we shall prove, all supersymmetries are unbroken, a feature closely related to the number of the localized fermions and also to the exact form of the associated operators. In addition, the corresponding Witten index is invariant under compact and odd perturbations.

V. K. Oikonomou

2014-11-30T23:59:59.000Z

140

Pseudogap and Superconducting Gap in High-Temperature Superconductors  

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

Pseudogap and Superconducting Gap in Pseudogap and Superconducting Gap in High-Temperature Superconductors Two decades after the discovery of first high temperature superconductors, the microscopic mechanism of high-Tc superconductivity remains elusive. In conventional superconductors, it has been well established that electrons form so-called "Cooper pairs" to give rise to superconductivity. The pair binding manifests itself as an energy gap in many spectroscopic measurements. This energy gap, known as superconducting gap, appears at the superconducting transition temperature Tc where the resistance also vanishes. For high temperature superconductors, the story is more complicated. Over a wide region of compositions and temperatures, there exists an energy gap well above Tc. This energy gap is called pseudogap [1], because there is no direct correlation to the superconducting transition. The origin of this pseudogap and its relation to the superconducting gap are believed to hold the key for understanding the mechanism of high-Tc superconductivity - one of the outstanding problems in condensed matter physics. In this regard, researchers Kiyohisa Tanaka and Wei-Sheng Lee, along with their co-workers in Prof. Zhi-Xun Shen's group at Stanford University, have recently made an important discovery about the coexistence of two distinct energy gaps that have opposite doping dependence. Their observation not only provides a natural explanation for the contradictory results about the superconducting gap deduced from different experimental techniques, but also has profound implications on the mechanism of high-Tc superconductivity.

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Minimum Stream Flow Standards (Connecticut) | Department of Energy  

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

Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations apply to all dams and structures which impound or divert waters on rivers or their tributaries, with some exceptions. The

142

Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting  

DOE Patents [OSTI]

The electrode gap of a VAR is monitored by determining the skewness of a distribution of gap voltage measurements. A decrease in skewness indicates an increase in gap and may be used to control the gap. 4 figs.

Williamson, R.L.; Zanner, F.J.; Grose, S.M.

1998-01-13T23:59:59.000Z

143

Structural organization of gap junction channels  

Science Journals Connector (OSTI)

Gap junctions were initially described morphologically, and identified as semi-crystalline arrays of channels linking two cells. This suggested that they may represent an amenable target for electron and X-ray crystallographic studies in much the same way that bacteriorhodopsin has. Over 30 years later, however, an atomic resolution structural solution of these unique intercellular pores is still lacking due to many challenges faced in obtaining high expression levels and purification of these structures. A variety of microscopic techniques, as well as NMR structure determination of fragments of the protein, have now provided clearer and correlated views of how these structures are assembled and function as intercellular conduits. As a complement to these structural approaches, a variety of mutagenic studies linking structure and function have now allowed molecular details to be superimposed on these lower resolution structures, so that a clearer image of pore architecture and its modes of regulation are beginning to emerge.

Gina E. Sosinsky; Bruce J. Nicholson

2005-01-01T23:59:59.000Z

144

Software Quality Assurance Improvment Plan: CFAST Gap Analysis, Final Report  

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

EH-4.2.1.3-CFAST-Gap Analysis EH-4.2.1.3-CFAST-Gap Analysis Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: CFAST Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 CFAST Gap Analysis May 2004 Final Report ii INTENTIONALLY BLANK CFAST Gap Analysis May 2004 Final Report iii FOREWORD This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the CFAST computer code for accident analysis applications, relative to established requirements. This evaluation, a "gap analysis," is performed to meet commitment 4.2.1.3 of the Department of Energy's

145

Technical Standards, MELCOR - Gap Analysis - May 3, 2004 | Department of  

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

MELCOR - Gap Analysis - May 3, 2004 MELCOR - Gap Analysis - May 3, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MELCOR Gap Analysis This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the MELCOR computer code for leak path factor applications, relative to established software requirements. This evaluation, a "gap analysis," is performed to meet Commitment 4.2.1.3 of the Department of Energy's Implementation Plan to resolve SQA issues identified in the Defense Nuclear Facilities Safety Board Recommendation 2002-1. Technical Standards, MELCOR - Gap Analysis More Documents & Publications Technical Standards, Guidance on MELCOR computer code - May 3, 2004

146

Two-gap elliptic solutions of the Boussinesq equation  

SciTech Connect (OSTI)

Two-gap solutions of the Boussinesq equation are considered. It is shown that for almost every Riemann surface {gamma} of genus g=2 covering the elliptic surface it is possible to construct an elliptic (in x) two-gap solution of the Boussinesq equation. The existence of third- and fourth-order differential operators with elliptic 'two-gap' potentials having an arbitrary number of poles is also established. An example is given.

Smirnov, A O [Saint-Petersburg State University of Aerospace Instrumentation, Saint-Petersburg (Russian Federation)

1999-06-30T23:59:59.000Z

147

Sensitivity Analysis of the Gap Heat Transfer Model in BISON.  

SciTech Connect (OSTI)

This report summarizes the result of a NEAMS project focused on sensitivity analysis of the heat transfer model in the gap between the fuel rod and the cladding used in the BISON fuel performance code of Idaho National Laboratory. Using the gap heat transfer models in BISON, the sensitivity of the modeling parameters and the associated responses is investigated. The study results in a quantitative assessment of the role of various parameters in the analysis of gap heat transfer in nuclear fuel.

Swiler, Laura Painton; Schmidt, Rodney C.; Williamson, Richard (INL); Perez, Danielle (INL)

2014-10-01T23:59:59.000Z

148

Combined Heat and Power: Connecting the Gap between Markets and...  

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

Combined Heat and Power: Connecting the Gap between Markets and Utility Interconnection and Tariff Practices (Part I) Susanne Brooks, Brent Elswick, and R. Neal Elliott March 2006...

149

To Bridge LEDs' Green Gap, Scientists Think Small  

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

emitting diodes (LEDs), especially in the "green gap," a portion of the spectrum where LED efficiency plunges, simulations at the U.S. Department of Energy's National Energy...

150

FAQS Gap Analysis Qualification Card – Civil Structural Engineering  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

151

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Prospective challengers to silicon, the long-reigning king of semiconductors for computer chips and other electronic...

152

FAQS Gap Analysis Qualification Card - Technical Training | Department...  

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

Description Technical Training Gap Analysis Qualification Card More Documents & Publications DOE-STD-1179-2004 DOE-HDBK-1078-94 FAQS Reference Guide - Technical Training...

153

Catalysis by Design: Bridging the Gap between Theory and Experiments...  

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

between Theory and Experiments Catalysis by Design: Bridging the Gap between Theory and Experiments Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research...

154

FAQS Gap Analysis Qualification Card – Nuclear Safety Specialist  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

155

Information Gap Decision Theory based OPF with HVDC Connected ...  

E-Print Network [OSTI]

curve as well as the uncertainties of wind power generation. Information gap .... its own advantages and disadvantages, which are summarized as follows.

2014-12-01T23:59:59.000Z

156

Method for Creating Photonic Band Gap Materials - Energy Innovation...  

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

a photonic band gap. These microstructures have the potential to change the way optoelectronic devices, such as photodiodes, LEDs, and integrated optical circuit elements, are...

157

Minding the Gap Makes for More Efficient Solar Cells  

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

properties of these materials go through a dramatic change that makes them ideal for solar energy applications. These materials can go from indirect band gap semiconductors to...

158

Requirements: A minimum of 15 PSYC credits, including  

E-Print Network [OSTI]

» Three other 2000-3000-level PSYC courses (any area) No more than 3 credits of PSYC 3889 or 3999 canRequirements: A minimum of 15 PSYC credits, including: » One Area I course » One Area II course) ___2100 (Principles of Research in Psychology) Area I. Social, Developmental, Clinical, & Industrial

Alpay, S. Pamir

159

The"minimum information about an environmental sequence" (MIENS) specification  

SciTech Connect (OSTI)

We present the Genomic Standards Consortium's (GSC) 'Minimum Information about an ENvironmental Sequence' (MIENS) standard for describing marker genes. Adoption of MIENS will enhance our ability to analyze natural genetic diversity across the Tree of Life as it is currently being documented by massive DNA sequencing efforts from myriad ecosystems in our ever-changing biosphere.

Yilmaz, P.; Kottmann, R.; Field, D.; Knight, R.; Cole, J.R.; Amaral-Zettler, L.; Gilbert, J.A.; Karsch-Mizrachi, I.; Johnston, A.; Cochrane, G.; Vaughan, R.; Hunter, C.; Park, J.; Morrison, N.; Rocca-Serra, P.; Sterk, P.; Arumugam, M.; Baumgartner, L.; Birren, B.W.; Blaser, M.J.; Bonazzi, V.; Bork, P.; Buttigieg, P. L.; Chain, P.; Costello, E.K.; Huot-Creasy, H.; Dawyndt, P.; DeSantis, T.; Fierer, N.; Fuhrman, J.; Gallery, R.E.; Gibbs, R.A.; Giglio, M.G.; Gil, I. San; Gonzalez, A.; Gordon, J.I.; Guralnick, R.; Hankeln, W.; Highlander, S.; Hugenholtz, P.; Jansson, J.; Kennedy, J.; Knights, D.; Koren, O.; Kuczynski, J.; Kyrpides, N.; Larsen, R.; Lauber, C.L.; Legg, T.; Ley, R.E.; Lozupone, C.A.; Ludwig, W.; Lyons, D.; Maguire, E.; Methe, B.A.; Meyer, F.; Nakieny, S.; Nelson, K.E.; Nemergut, D.; Neufeld, J.D.; Pace, N.R.; Palanisamy, G.; Peplies, J.; Peterson, J.; Petrosino, J.; Proctor, L.; Raes, J.; Ratnasingham, S.; Ravel, J.; Relman, D.A.; Assunta-Sansone, S.; Schriml, L.; Sodergren, E.; Spor, A.; Stombaugh, J.; Tiedje, J.M.; Ward, D.V.; Weinstock, G.M.; Wendel, D.; White, O.; Wikle, A.; Wortman, J.R.; Glockner, F.O.; Bushman, F.D.; Charlson, E.; Gevers, D.; Kelley, S.T.; Neubold, L.K.; Oliver, A.E.; Pruesse, E.; Quast, C.; Schloss, P.D.; Sinha, R.; Whitely, A.

2010-10-15T23:59:59.000Z

160

New approximation algorithms for minimum cycle bases of graphs  

Science Journals Connector (OSTI)

We consider the problem of computing an approximate minimum cycle basis of an undirected edge-weighted graph G with m edges and n vertices; the extension to directed graphs is also discussed. In this problem, a {0, 1} incidence vector ...

Telikepalli Kavitha; Kurt Mehlhorn; Dimitrios Michail

2007-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

On minimum balanced bipartitions of triangle-free graphs  

Science Journals Connector (OSTI)

A balanced bipartition of a graph G is a partition of V(G) into two subsets V 1 and V 2 that differ in cardinality by at most 1. A minimum balanced bipartition of G ... Keywords: Balanced bipartition, Planar graphs, Triangle-free graphs

Haiyan Li; Yanting Liang; Muhuo Liu; Baogang Xu

2014-04-01T23:59:59.000Z

162

Implementing Minimum Cycle Basis algorithms Kurt Mehlhorn and Dimitrios Michail  

E-Print Network [OSTI]

Implementing Minimum Cycle Basis algorithms Kurt Mehlhorn and Dimitrios Michail Max consider the problem of computing a mini- mum cycle basis of an undirected graph G = (V, E) with n vertices in a significant speedup. Based on our experimental observations, we combine the two fundamen- tally different

Mehlhorn, Kurt

163

A minimum entropy principle of high order schemes for gas ...  

E-Print Network [OSTI]

The entropy solutions of the compressible Euler equations satisfy a minimum principle for the specific ... where ? is the density, u is the velocity, m is the momentum, E is the total energy and p is the pressure. ... can enforce this condition without destroying conservation. .... achieved under a standard CFL condition ? (|u| + c) ...

2011-09-15T23:59:59.000Z

164

On the Minimum Load Coloring Problem --Extended Abtract--  

E-Print Network [OSTI]

# such that the maximum load, l # := max{r# , b #}, is minimized. In the following we shall skip the term ``maximumOn the Minimum Load Coloring Problem --Extended Abtract-- Nitin Ahuja 1 , Andreas Baltz 2 Abstract. Given a graph G = (V, E) with n vertices, m edges and maximum vertex degree #, the load

Doerr, Benjamin

165

Predicting Daily Net Radiation Using Minimum Climatological Data1  

E-Print Network [OSTI]

Predicting Daily Net Radiation Using Minimum Climatological Data1 S. Irmak, M.ASCE2 ; A. Irmak3 ; J for predicting daily Rn have been widely used. However, when the paucity of detailed climatological data with National Weather Service climatological datasets that only record Tmax and Tmin on a regular basis. DOI: 10

166

Optimizing rotational acceleration curves for minimum energy use in electric  

E-Print Network [OSTI]

Optimizing rotational acceleration curves for minimum energy use in electric motors. 12/15/06 Fall the optimal efficiency of a motor for any input values of motor constants, distance, or time. In every of the inspiration to find which rotational acceleration curve for the used motors would be most efficient. We really

Ruina, Andy L.

167

Localized Minimum-Energy Broadcasting for Wireless Multihop Networks  

E-Print Network [OSTI]

tree. We then observe that, for very dense networks, it is more energy-efficient to reach more than oneLocalized Minimum-Energy Broadcasting for Wireless Multihop Networks with Directional Antennas, and Carmen M. Yago Abstract--There are a number of proposals to achieve energy-efficient broadcasting

Stojmenovic, Ivan

168

Minimum-Hot-Spot Query Trees for Wireless Sensor Networks  

E-Print Network [OSTI]

an energy- efficient query routing tree. (a) Energy harvesting for battery- less nodes for the (b) Voltree to the querying node. Energy-efficient query routing trees are needed in a plethora of systems such as PeopleMinimum-Hot-Spot Query Trees for Wireless Sensor Networks Georgios Chatzimilioudis Dept

Zeinalipour, Demetris

169

Minimum cost connection networks: truth-telling and implementation  

E-Print Network [OSTI]

Minimum cost connection networks: truth-telling and implementation Jens Leth Hougaard Mich Tvede Abstract In the present paper we consider the allocation of costs in connection networks. Agents have are costly to build. The problem is to allocate costs of networks satisfying all connection demands. We use

Guo, Zaoyang

170

Minimum Power Configuration for Wireless Communication in Sensor Networks  

E-Print Network [OSTI]

conserve more energy than exist- ing minimum power routing and topology control protocols. Furthermore configuration, ad hoc net- works, energy efficiency, wireless communications Part of this article was published aggressively conserve energy in order to operate for extensive periods without wired power sources. Since

171

Structural Testing Based on Minimum Kernels Elena Dubrova  

E-Print Network [OSTI]

Structural Testing Based on Minimum Kernels Elena Dubrova Royal Institute of Technology, IMIT/KTH, 164 46 Kista, Sweden Abstract Structural testing techniques, such as statement and branch coverage of tests which guarantees high coverage is a time-consuming task. In this paper we present a technique

Paris-Sud XI, Université de

172

National Common Minimum Programme of the Congress-Led  

E-Print Network [OSTI]

National Common Minimum Programme of the Congress-Led United Progressive Alliance: Policy Reform Progressive Alliance: Policy Reform and Public Investment Requirements Nirupam Bajpai and Jeffrey D. Sachs 2004. This note attempts to identify and analyze what the key policy reform measures and the public

173

The prize-collecting generalized minimum spanning tree problem  

Science Journals Connector (OSTI)

We introduce the prize-collecting generalized minimum spanning tree problem. In this problem a network of node clusters needs to be connected via a tree architecture using exactly one node per cluster. Nodes in each cluster compete by offering a payment ... Keywords: Branch-and-cut, Genetic algorithms, Heuristics, Local search, Networks

Bruce Golden; S. Raghavan; Daliborka Stanojevi?

2008-02-01T23:59:59.000Z

174

Interior Architecture Minor Tracking Sheet Total Minimum Credits: 26  

E-Print Network [OSTI]

Interior Architecture Minor Tracking Sheet Total Minimum Credits: 26 Minor standing is prerequisite architecture studio course is required for architecture majors enrolled in the interior architecture minor (1 is required for Architecture majors): IARC 484 Interior Design Studio (6), IARC 486 Furniture

175

Architecture Minor Tracking Sheet Total Minimum Credits: 26  

E-Print Network [OSTI]

Architecture Minor Tracking Sheet Total Minimum Credits: 26 Minor standing is prerequisite Notes: Required courses in one's major will not count for the minor with one exception: 1 architecture studio course is required for interior architecture majors enrolled in the architecture minor, and this studio

176

Optimum Wire Tapering for Minimum Power Dissipation in RLC Interconnects  

E-Print Network [OSTI]

tapering is shown to reduce the (a CMOS inverter) with the driver (a CMOS inverter). The power dissipatedOptimum Wire Tapering for Minimum Power Dissipation in RLC Interconnects Magdy A. El-Moursy and Eby G. Friedman Department of Electrical and Computer Engineering University of Rochester Rochester, New

Friedman, Eby G.

177

Electronic materials with a wide band gap: recent developments  

Science Journals Connector (OSTI)

Usually, semiconductors with a band gap Eg 3 eV or larger are called wide band gap materials. Their optical emission can span the whole of the visible spectrum, enabling the development of devices for solid-state lighting. In addition, a large Eg results in a high electrical breakthrough field, which is interesting for high-power electronics.

Klimm, D.

2014-08-29T23:59:59.000Z

178

Rural Microfinance Service Delivery: Gaps, Inefficiencies and Emerging Solutions  

E-Print Network [OSTI]

Rural Microfinance Service Delivery: Gaps, Inefficiencies and Emerging Solutions Tapan S. Parikh emerged as one of the most promising avenues for stimulating rural economic devel- opment through local enterprise. In this paper we will discuss some of the major technology gaps faced by rural microfinance

Parikh, Tapan S.

179

ERDC/CERLTR-05-38 Determining Research Gaps  

E-Print Network [OSTI]

ERDC/CERLTR-05-38 Determining Research Gaps in Disturbance Data for Fort Bliss and a Conceptual-38 November 2005 Determining Research Gaps in Disturbance Data for Fort Bliss and a Conceptual Model Tamara Bliss #12;ABSTRACT Numerous research and outside monitoring efforts have been completed for Fort Bliss

Fehmi, Jeffrey S.

180

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Prospective challengers to silicon, the long-reigning king of semiconductors for computer chips and other electronic devices, have to overcome silicon's superb collection of materials properties as well as sophisticated fabrication technologies refined by six decades of effort by materials scientists and engineers. Graphene, one of the latest contenders, has a rather impressive list of features of its own but has lacked a key characteristic of all semiconductors, an energy gap (band gap) in its electronic band structure. A multi-institutional collaboration under the leadership of researchers with Berkeley Lab and the University of California, Berkeley, have now demonstrated that growing an epitaxial film of graphene on a silicon carbide substrate results in a significant band gap, 0.26 electron volts (eV), an important step toward making graphene useful as a semiconductor.

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Review of Used Nuclear Fuel Storage and Transportation Technical Gap  

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

Analysis Analysis Review of Used Nuclear Fuel Storage and Transportation Technical Gap Analysis While both wet and dry storage have been shown to be safe options for storing used nuclear fuel (UNF), the focus of the program is on dry storage of commercial UNF at reactor or centralized locations. This report focuses on the knowledge gaps concerning extended storage identified in numerous domestic and international investigations and provides the Used Fuel Disposition Campaign"s (UFDC) gap description, any alternate gap descriptions, the rankings by the various organizations, evaluation of the priority assignment, and UFDC-recommended action based on the comparison. Review of Used Nuclear Fuel Storage and Transportation Technical Gap Analysis More Documents & Publications

182

Spectral gap and logarithmic Sobolev constant for continuous spin systems  

E-Print Network [OSTI]

The aim of this paper is to study the spectral gap and the logarithmic Sobolev constant for continuous spin systems. A simple but general result for estimating the spectral gap of finite dimensional systems is given by Theorem 1.1, in terms of the spectral gap for one-dimensional marginals. The study of the topic provides us a chance, and it is indeed another aim of the paper, to justify the power of the results obtained previously. The exact order in dimension one (Proposition 1.4), and then the precise leading order and the explicit positive regions of the spectral gap and the logarithmic Sobolev constant for two typical infinite-dimensional models are presented (Theorems 6.2 and 6.3). Since we are interested in explicit estimates, the computations become quite involved. A long section (Section 4) is devoted to the study of the spectral gap in dimension one.

Mu-Fa Chen

2010-04-26T23:59:59.000Z

183

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Prospective challengers to silicon, the long-reigning king of semiconductors for computer chips and other electronic devices, have to overcome silicon's superb collection of materials properties as well as sophisticated fabrication technologies refined by six decades of effort by materials scientists and engineers. Graphene, one of the latest contenders, has a rather impressive list of features of its own but has lacked a key characteristic of all semiconductors, an energy gap (band gap) in its electronic band structure. A multi-institutional collaboration under the leadership of researchers with Berkeley Lab and the University of California, Berkeley, have now demonstrated that growing an epitaxial film of graphene on a silicon carbide substrate results in a significant band gap, 0.26 electron volts (eV), an important step toward making graphene useful as a semiconductor.

184

MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS  

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

MINIMUM EMITTANCE LATTICE FOR MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS 1. C. Teng ANL/FNAL LS-17 L. Teng March 18, 1985 The natural emittance of an electron beam in a storage ring is given by (see e.g., M. Sands, SLAC 21) (1) where Cq =~~= 3.832 x 10-l3 m 32/3 mc J x partition factor in the bending plane y = total energy in mc 2 uni ts p orbit radius in bending magnets (assumed the same in all magne ts) H yn 2 - + 2ann ' + Bn I 2 ( a, B, Y = betatron functions ) n, n I dispersion functions <> = averaging over bending magnets We shall calculate for each bending magnet, then average over all magnets. 2 A. General Expression for H This can be calculated in a straightforward manner, but we can save a great deal of arithmetic with some preliminary formal analytical

185

The Energy-Dependence of GRB Minimum Variability Timescales  

E-Print Network [OSTI]

We constrain the minimum variability timescales for 938 GRBs observed by the Fermi/GBM instrument prior to July 11, 2012. The tightest constraints on progenitor radii derived from these timescales are obtained from light curves in the hardest energy channel. In the softer bands -- or from measurements of the same GRBs in the hard X-rays from Swift -- we show that variability timescales tend to be a factor 2--3 longer. Applying a survival analysis to account for detections and upper limits, we find median minimum timescale in the rest frame for long-duration and short-duration GRBs of 45 ms and 10 ms, respectively. Fewer than 10% of GRBs show evidence for variability on timescales below 2 ms. These shortest timescales require Lorentz factors $\\gtrsim 400$ and imply typical emission radii $R \\approx 1 {\\times} 10^{14}$ cm for long-duration GRBs and $R \\approx 3 {\\times} 10^{13}$ cm for short-duration GRBs. We discuss implications for the GRB fireball model and investigate whether GRB minimum timescales evolve w...

Golkhou, V Zach; Littlejohns, Owen M

2015-01-01T23:59:59.000Z

186

Minimum information about a marker gene sequence (MIMARKS) and minimum information about any (x) sequence (MIxS) specifications.  

SciTech Connect (OSTI)

Here we present a standard developed by the Genomic Standards Consortium (GSC) for reporting marker gene sequences - the minimum information about a marker gene sequence (MIMARKS). We also introduce a system for describing the environment from which a biological sample originates. The 'environmental packages' apply to any genome sequence of known origin and can be used in combination with MIMARKS and other GSC checklists. Finally, to establish a unified standard for describing sequence data and to provide a single point of entry for the scientific community to access and learn about GSC checklists, we present the minimum information about any (x) sequence (MIxS). Adoption of MIxS will enhance our ability to analyze natural genetic diversity documented by massive DNA sequencing efforts from myriad ecosystems in our ever-changing biosphere.

Yilmaz, P.; Kottmann, R.; Field, D.; Knight, R.; Cole, J. R.; Amaral-Zettler, L.; Gilbert, J. A. (CLS-CI); ( MCS); (Microbial Genomics and Bioinformatics Group, Max Planck Institute for Marine Microbiology, Bremen, Germany); (Jacombs University Bremen gGmbH, Bremen, Germany); (Natural Environment Research Council Environmental Bioinformatics Centre, Wallington CEH); (Department of Chemistry and Biochemistry, University of Colorado); (Howard Hughes Medical Institute, San Francisco, California); (Ribosomal Database Project, Michigan State University)

2011-05-01T23:59:59.000Z

187

Bridging the Gaps of High-Tc Superconductor  

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

Bridging the Gaps of High-Tc Bridging the Gaps of High-Tc Superconductor Since the discovery of high-temperature superconductor by Bednorz and Müller in 1986, this field has become one of the most important research topics in solid state physics. In the past 20 years many unconventional properties have been discovered in this new class of materials. These have challenged our conventional wisdom and driven the development of many novel theories. Among these discoveries, the most mysterious is probably the pseudogap phenomena: it has been observed that there is an energy gap above the superconducting transition temperature (TC) that persists over a wide range of temperatures and chemical compositions [1]. This peculiar behavior appears to be very different from a conventional superconductor. Here the electrons form so-called "Cooper pairs", which manifests itself as an energy gap in many spectroscopic measurements. This energy gap, known as superconducting gap, appears only below TC where the electrical resistance also vanishes (hence the name 'superconductor'). This important difference has stimulated lots of debate in the search of understanding high-TC superconductivity on questions such as: "What is the pseudogap?" and "What is its relation to superconducting gap and superconductivity at high temperature?"

188

Radial-Gap Permanent Magnet Motor and Drive Research FY 2004  

SciTech Connect (OSTI)

The objective of this task was to study permanent magnet (PM) radial-gap traction drive systems that could meet the U.S. Department of Energy FreedomCAR Program's 2010 goals to expose weaknesses or identify strengths. Initially, the approach was to compare attributes such as physical deformations during operation, performance (torque, power, efficiency versus speed), material requirements (strength), material costs, manufacturability, weight, power density, specific power, reliability, and drivability for specific motors. Three motors selected were the commercially available 60-kW radial-gap surface-mounted PM motor manufactured by UQM Technologies, Inc.; a hypothetical PM motor with rotor-supported magnets similar to the Honda MCF-21; and Delphi's automotive electric machine drive motor, whose rotor is a ferromagnetic cylinder, held at one end by a shaft that supports the magnets on its inner surface. Potential problems have appeared related to PM motors, such as (1) high no-load spin losses and high operational power losses, probably from eddy current losses in the rotor; (2) the undemonstrated dual mode inverter control (DMIC) for driving a brushless dc motor (BDCM) (UQM and Delphi motors); (3) uncertainty about the potential for reducing current with DMIC; and (4) uncertainty about the relation between material requirements and maximum rotor speed. Therefore, the approach was changed to study in detail three of the comparison attributes: drivability, performance, and material requirements. Drivability and related problems were examined by demonstrating that DMIC may be used to drive an 18-pole 30-kW PM motor to 6000 rpm, where the maximum electrical frequency is 900 Hz. An available axial-gap test motor with 18 poles was used because its control is identical to that of a radial gap PM motor. Performance was analytically examined, which led to a derivation showing that DMIC controls a PM motor so that the motor uses minimum current to produce any power regardless of speed for relative speeds, n = {omega}/{omega}{sub base} {ge} 2. Performance was also examined with efficiency measurements during the 30-kW PM motor test. Material requirements were examined with finite-element analyses (FEA) to determine the speed and location where yield starts and the corresponding deformations and stresses.

McKeever, J.W.

2005-02-11T23:59:59.000Z

189

Software Quality Assurance Improvment Plan: ALOHA Gap Analysis, Final Report  

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

Final-ALOHA Final-ALOHA Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: ALOHA Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 ALOHA Gap Analysis May 2004 Final Report INTENTIONALLY BLANK ii ALOHA Gap Analysis May 2004 Final Report FOREWORD This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the chemical source term and atmospheric dispersion computer code, ALOHA 5.2.3, relative to established

190

Buffalo Gap II Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Gap II Wind Farm Gap II Wind Farm Jump to: navigation, search Name Buffalo Gap II Wind Farm Facility Buffalo Gap II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Developer AES Corp. Energy Purchaser Direct Energy Location Taylor County TX Coordinates 32.310556°, -100.149167° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.310556,"lon":-100.149167,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

191

Olene Gap Space Heating Low Temperature Geothermal Facility | Open Energy  

Open Energy Info (EERE)

Olene Gap Space Heating Low Temperature Geothermal Facility Olene Gap Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Olene Gap Space Heating Low Temperature Geothermal Facility Facility Olene Gap Sector Geothermal energy Type Space Heating Location Klamath County, Oregon Coordinates 42.6952767°, -121.6142133° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

192

Closing the Gender Gap in Energy Policy | Department of Energy  

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

the Gender Gap in Energy Policy the Gender Gap in Energy Policy Closing the Gender Gap in Energy Policy April 7, 2011 - 3:07pm Addthis Melanie A. Kenderdine Melanie A. Kenderdine Director of the Office of Energy Policy and Systems Analysis What are the key facts? There's not just a shortage of women in technical energy-related fields, there's also a shortage of women in energy policy. Women hold only 27 percent of the science and engineering jobs in the United States. Editor's Note: Join the conversation surrounding this year's Clean Energy Ministerial on Twitter via #CEM2. There's a well-documented gender gap for women in science and engineering, or women in the "STEM" fields of science, technology, engineering and math. The numbers are stark: According to the National Science Foundation, women hold only 27 percent of the science and

193

Suicide mortality gap between Francophones and Anglophones of Quebec, Canada  

Science Journals Connector (OSTI)

Few studies evaluate language-group differences in suicide mortality. This study assessed the suicide mortality gap between Francophones and Anglophones of Quebec, Canada according to age, sex, method...

Stephanie Burrows; Nathalie Auger…

2013-07-01T23:59:59.000Z

194

Governing the gap: Forging safe science through relational regulation  

E-Print Network [OSTI]

Designed to close the ubiquitous gap between law on the books and law in action, management systems locate the standard setting and implementation of regulation within the regulated organization itself. Despite efforts to ...

Huising, Ruthanne

195

Air-gap sacrificial materials by initiated chemical vapor deposition  

E-Print Network [OSTI]

P(neopentyl methacrylate-co-ethylene glycol dimethacrylate) copolymer, abbreviated as P(npMAco-EGDA), was selected as the potential air-gap sacrificial material among possible combination of twenty monomers and four ...

Lee, Long Hua

2007-01-01T23:59:59.000Z

196

Synthesis of electromagnetic modes in photonic band gap fibers  

E-Print Network [OSTI]

In this paper, we report on the successful synthesis of three individual modes, HE11, TEo0, and TE02 for transmission in photonic band gap fibers at near infrared wavelengths. We measure the propagation losses of the HE11 ...

Hu, Qichao

2007-01-01T23:59:59.000Z

197

SciTech Connect: Enhanced Superconducting Gaps in Trilayer High...  

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

Enhanced Superconducting Gaps in Trilayer High-Temperature Bi (2) Sr (2) Ca (2) Cu (3) O (10+delta) Cuprate Superconductor Citation Details In-Document Search Title: Enhanced...

198

Columbia Gorge Gap Winds: Their Climatological Influence and Synoptic Evolution  

Science Journals Connector (OSTI)

This paper quantifies the impact of the Columbia Gorge on the weather and climate within and downstream of this mesoscale gap and examines the influence of synoptic-scale flow on gorge weather. Easterly winds occur more frequently and are ...

Justin Sharp; Clifford F. Mass

2004-12-01T23:59:59.000Z

199

References on Spectral Gaps, May 2006, Palo Alto, CA  

E-Print Network [OSTI]

gaps for Schödinger operators with symmetric single well potentials and related ... [21] S. G. Bobkov, Isoperimetric and Analytic Inequalities for Log-Concave. Probability .... Mathematical Physics (Birmingham, Alabama, 1986), Lect. Notes in

2006-05-19T23:59:59.000Z

200

Permanent-magnet-less machine having an enclosed air gap  

DOE Patents [OSTI]

A permanent magnet-less, brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by an alternating current. An uncluttered rotor disposed within the magnetic rotating field is spaced apart from the stator to form an air gap relative to an axis of rotation. A stationary excitation core spaced apart from the uncluttered rotor by an axial air gap and a radial air gap substantially encloses the stationary excitation core. Some permanent magnet-less, brushless synchronous systems include stator core gaps to reduce axial flux flow. Some permanent magnet-less, brushless synchronous systems include an uncluttered rotor coupled to outer laminations. The quadrature-axis inductance may be increased in some synchronous systems. Some synchronous systems convert energy such as mechanical energy into electrical energy (e.g., a generator); other synchronous systems may convert any form of energy into mechanical energy (e.g., a motor).

Hsu, John S. (Oak Ridge, TN)

2012-02-07T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Proper Sustainability: GAP Grant Proposal Work Plan Strategy Webinar  

Office of Energy Efficiency and Renewable Energy (EERE)

In this webinar I will discuss the new GAP grant requirements for tribal environmental programs and strategies for crafting a work plan that focuses on capacity building activities.  My goal is to...

202

Beneath the surface: The decline in gender injury gap  

Science Journals Connector (OSTI)

Abstract Gender differences in the labor market are typically measured by the wage gap. In this paper, we investigate how extending the analysis to an additional job amenity, namely workplace safety, may shed new light on the evolution of gender differences. Our results show that focusing on one unique measure of the gender gap may provide a biased view of the actual progress of women in the labor market. In our data, a significant reduction in the wage gap has been accompanied by a relative increase in injury risk for some groups of workers, e.g. low-skilled female workers. The decreased gender wage gap for these workers does not necessarily imply an overall improvement in their labor market outcomes.

Tiziano Razzolini; Roberto Leombruni; Giovanni Mastrobuoni; Mario Pagliero

2014-01-01T23:59:59.000Z

203

Closing gaps in the human genome using sequencing by synthesis  

E-Print Network [OSTI]

The most recent release of the finished human genome contains 260 euchromatic gaps (excluding chromosome Y). Recent work has helped explain a large number of these unresolved regions as 'structural' in nature. Another class ...

Arachchi, Harindra M.

204

Hydrogeologic Model for the Gable Gap Area, Hanford Site  

SciTech Connect (OSTI)

Gable Gap is a structural and topographic depression between Gable Mountain and Gable Butte within the central Hanford Site. It has a long and complex geologic history, which includes tectonic uplift synchronous with erosional downcutting associated with the ancestral Columbia River during both Ringold and Cold Creek periods, and by the later Ice Age (mostly glacial Lake Missoula) floods. The gap was subsequently buried and partially backfilled by mostly coarse-grained, Ice Age flood deposits (Hanford formation). Erosional remnants of both the Ringold Formation and Cold Creek unit locally underlie the high-energy flood deposits. A large window exists in the gap where confined basalt aquifers are in contact with the unconfined suprabasalt aquifer. Several paleochannels, of both Hanford and Ringold Formation age, were eroded into the basalt bedrock across Gable Gap. Groundwater from the Central Plateau presently moves through Gable Gap via one or more of these shallow paleochannels. As groundwater levels continue to decline in the region, groundwater flow may eventually be cut off through Gable Gap.

Bjornstad, Bruce N.; Thorne, Paul D.; Williams, Bruce A.; Last, George V.; Thomas, Gregory S.; Thompson, Michael D.; Ludwig, Jami L.; Lanigan, David C.

2010-09-30T23:59:59.000Z

205

The impact of minimum age of employment regulation on child labor and schooling  

E-Print Network [OSTI]

Promoting minimum age of employment regulation has been a centerpiece in child labor policy for the last 15 years. If enforced, minimum age regulation would change the age profile of paid child employment. Using micro-data ...

Edmonds, Eric V

206

Investigating the book-tax income gap : factors which affect the gap and details regarding its most significant component  

E-Print Network [OSTI]

(cont.) In total, my thesis suggests that recent changes in the book-tax income gap may be exogenous and transitory, due to changes to the calculation of book income, general business conditions or other factors which ...

Seidman, Jeri

2008-01-01T23:59:59.000Z

207

LANGMUIR WAVE ACTIVITY: COMPARING THE ULYSSES SOLAR MINIMUM AND SOLAR MAXIMUM ORBITS  

E-Print Network [OSTI]

). The top three panels correspond to the southern segment of the solar minimum orbit; repeated passesLANGMUIR WAVE ACTIVITY: COMPARING THE ULYSSES SOLAR MINIMUM AND SOLAR MAXIMUM ORBITS R. J at the electron plasma frequency) during the solar minimum and solar maximum orbits of Ulysses. At high latitudes

California at Berkeley, University of

208

Anomalous electron density events in the quiet summer ionosphere at solar minimum over Millstone Hill  

E-Print Network [OSTI]

Anomalous electron density events in the quiet summer ionosphere at solar minimum over Millstone region ionosphere over Millstone Hill with calculations from the IZMIRAN model for solar minimum layer. This phenomenon occurs frequently in the quiet ionosphere at solar minimum during summer

Boyer, Edmond

209

Magnetic Flux Transport Simulations of Solar Surface Magnetic Distributions During a Grand Minimum.  

E-Print Network [OSTI]

, Scotland, KY16 9SS. Abstract. It is well known that magnetic activity on the Sun modulates from one cycle strongly depend on the phase of the cycle in which the grand minimum starts and whether it lasts for an odd or even number of cycles. If the grand minimum starts around cycle minimum then a signi#12;cant amount

Mackay, Duncan

210

Minimum Energy Consumption in Multicomponent Distillation. 3. More Than Three Products and Generalized Petlyuk Arrangements  

E-Print Network [OSTI]

Minimum Energy Consumption in Multicomponent Distillation. 3. More Than Three Products-component feed into M products has been derived. Interestingly, the minimum-energy solution in a complex solution of minimum energy for distillation of a multicomponent feed into multiple products has not been

Skogestad, Sigurd

211

An On-demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network  

E-Print Network [OSTI]

An On-demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network Sheetalkumar Doshi of an on-demand minimum energy routing protocol and suggests mechanisms for their imple- mentation. We of an on-demand minimum energy routing protocol in terms of energy savings with an existing on-demand ad

212

An On-demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network  

E-Print Network [OSTI]

An On-demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network Sheetalkumar Doshi the necessary features of an on-demand minimum energy routing protocol and suggests mechanisms the performance of an on-demand minimum energy routing protocol in terms of energy savings with an existing on

Brown, Timothy X.

213

Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning  

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

ACMP Flash 2011-62 ACMP Flash 2011-62 Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning GS-1105s with a warrant for purchases up to $25,000 At least 6 months of Government Purchase Card experience Certified to Level I in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases $25,000 up to the simplified acquisition threshold At least 1 year of Government Purchase Card experience Certified to Level II in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases over the simplified acquisition threshold At least 5 years of progressively complex contracting experience Certified to Level III in the ACMP Purchasing Program 80 hours every two years

214

Phase behavior and minimum miscibility pressure for nitrogen miscible displacement  

SciTech Connect (OSTI)

Nitrogen (N/sub 2/) has been successfully used as a displacing gas for light oil recovery. The information of the minimum miscibility pressure (MMP) and phase behavior for N/sub 2/ with light oils is important for the screening of this oil recovery method. Phase behavior studies were performed on N/sub 2/-hydrocarbon mixtures at high pressure (above 4,000 psia) to help interpret the results of the slim tube experiments. Synthetic oil systems of methane + n-butane (nC/sub 4/) + n-decane (nC/sub 10/) were studied to determine the approximate phase behavior of crude oil with nitrogen and to investigate the effect of the presence of methane (C/sub 1/) on phase behavior and the MMP of N/sub 2/. The resulting phase diagram shows that methane can lower the miscibility pressure of nitrogen.

Chung, F.T.H.; Llave, F.M.; Louvier, R.W.; Hudgins, D.A.

1987-01-01T23:59:59.000Z

215

Gap formation and stability in non-isothermal protoplanetary discs  

E-Print Network [OSTI]

Several observations of transition discs show lopsided dust-distributions. A potential explanation is the formation of a large-scale vortex acting as a dust-trap at the edge of a gap opened by a giant planet. Numerical models of gap-edge vortices have thus far employed locally isothermal discs, but the theory of this vortex-forming or `Rossby wave' instability was originally developed for adiabatic discs. We generalise the study of planetary gap stability to non-isothermal discs using customised numerical simulations of disc-planet systems where the planet opens an unstable gap. We include in the energy equation a simple cooling function with cooling timescale $t_c=\\beta\\Omega_k^{-1}$, where $\\Omega_k$ is the Keplerian frequency, and examine the effect of $\\beta$ on the stability of gap edges and vortex lifetimes. We find increasing $\\beta$ lowers the growth rate of non-axisymmetric perturbations, and the dominant azimuthal wavenumber $m$ decreases. We find a quasi-steady state consisting of one large-scale, ...

Les, Robert

2015-01-01T23:59:59.000Z

216

Buffalo Gap 3 Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Buffalo Gap 3 Wind Farm Buffalo Gap 3 Wind Farm Facility Buffalo Gap 3 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner AES Wind Generation Developer AES Wind Generation Energy Purchaser Direct Energy Location TX Coordinates 32.310556°, -100.149167° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.310556,"lon":-100.149167,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

217

Lower bounds to the spectral gap of Davies generators  

SciTech Connect (OSTI)

We construct lower bounds to the spectral gap of a family of Lindblad generators known as Davies maps. These maps describe the thermalization of quantum systems weakly coupled to a heat bath. The steady state of these systems is given by the Gibbs distribution with respect to the system Hamiltonian. The bounds can be evaluated explicitly, when the eigenbasis and the spectrum of the Hamiltonian is known. A crucial assumption is that the spectrum of the Hamiltonian is non-degenerate. Furthermore, we provide a counterexample to the conjecture, that the convergence rate is always determined by the gap of the associated Pauli master equation. We conclude that the full dynamics of the Lindblad generator has to be considered. Finally, we present several physical example systems for which the bound to the spectral gap is evaluated.

Temme, Kristan [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)] [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2013-12-15T23:59:59.000Z

218

Vortex and gap generation in gauge models of graphene  

E-Print Network [OSTI]

Effective quantum field theoretical continuum models for graphene are investigated. The models include a complex scalar field and a vector gauge field. Different gauge theories are considered and their gap patterns for the scalar, vector, and fermion excitations are investigated. Different gauge groups lead to different relations between the gaps, which can be used to experimentally distinguish the gauge theories. In this class of models the fermionic gap is a dynamic quantity. The finite-energy vortex solutions of the gauge models have the flux of the "magnetic field" quantized, making the Bohm-Aharonov effect active even when external electromagnetic fields are absent. The flux comes proportional to the scalar field angular momentum quantum number. The zero modes of the Dirac equation show that the gauge models considered here are compatible with fractionalization.

O. Oliveira; C. E. Cordeiro; A. Delfino; W. de Paula; T. Frederico

2010-12-21T23:59:59.000Z

219

Origin of the charge gap in LaMnPO  

Science Journals Connector (OSTI)

We present high temperature inelastic neutron scattering and magnetic susceptibility measurements of the antiferromagnetic insulator LaMnPO that are consistent with the presence of two-dimensional magnetic correlations up to a temperature Tmax?700K?TN=375 K, the Néel temperature. Optical transmission measurements show the T=300 K direct charge gap ?=1 eV has decreased only marginally by 500 K and suggest it decreases by only 10% at Tmax. Density functional theory and dynamical mean-field theory calculations reproduce a direct charge gap in paramagnetic LaMnPO only when a strong Hund's coupling JH=0.9 eV is included, as well as on-site Hubbard U=8 eV. Our results show that LaMnPO is a Mott-Hund's insulator, in which the charge gap is rather insensitive to antiferromagnetic exchange coupling.

D. E. McNally; J. W. Simonson; K. W. Post; Z. P. Yin; M. Pezzoli; G. J. Smith; V. Leyva; C. Marques; L. DeBeer-Schmitt; A. I. Kolesnikov; Y. Zhao; J. W. Lynn; D. N. Basov; G. Kotliar; M. C. Aronson

2014-11-18T23:59:59.000Z

220

WORKSHOP REPORT:Light-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials  

Broader source: Energy.gov [DOE]

WORKSHOP REPORT:Light-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Quantifying yield gaps in wheat production in Russia  

Science Journals Connector (OSTI)

Crop yields must increase substantially to meet the increasing demands for agricultural products. Crop yield increases are particularly important for Russia because low crop yields prevail across Russia's widespread and fertile land resources. However, reliable data are lacking regarding the spatial distribution of potential yields in Russia, which can be used to determine yield gaps. We used a crop growth model to determine the yield potentials and yield gaps of winter and spring wheat at the provincial level across European Russia. We modeled the annual yield potentials from 1995 to 2006 with optimal nitrogen supplies for both rainfed and irrigated conditions. Overall, the results suggest yield gaps of 1.51–2.10 t ha?1, or 44–52% of the yield potential under rainfed conditions. Under irrigated conditions, yield gaps of 3.14–3.30 t ha?1, or 62–63% of the yield potential, were observed. However, recurring droughts cause large fluctuations in yield potentials under rainfed conditions, even when the nitrogen supply is optimal, particularly in the highly fertile black soil areas of southern European Russia. The highest yield gaps (up to 4 t ha?1) under irrigated conditions were detected in the steppe areas in southeastern European Russia along the border of Kazakhstan. Improving the nutrient and water supply and using crop breeds that are adapted to the frequent drought conditions are important for reducing yield gaps in European Russia. Our regional assessment helps inform policy and agricultural investors and prioritize research that aims to increase crop production in this important region for global agricultural markets.

Florian Schierhorn; Monireh Faramarzi; Alexander V Prishchepov; Friedrich J Koch; Daniel Müller

2014-01-01T23:59:59.000Z

222

Sub-10-nanometre metallic gaps for use in molecular electronics  

E-Print Network [OSTI]

gaps as small as sub-10 nm. Image from (8). Gaps can also be created by trapping gold nanoparticles between large-separation electrodes using an AC field, and then breaking the bridge by applying a large DC 5 1.2 Review of Related Work voltage (16... .3 Simmons Tunnelling Model grown QDs because their local environment is more stable. This susceptibility to electric fields will be apparent in our measurements, as discussed in 7.6. No matter the nature of the excitation, QDs may emit photons when...

Curtis, Kellye Suzanne

2012-07-03T23:59:59.000Z

223

The role of the energy gap in protein folding dynamics  

E-Print Network [OSTI]

The dynamics of folding of proteins is studied by means of a phenomenological master equation. The energy distribution is taken as a truncated exponential for the misfolded states plus a native state sitting below the continuum. The influence of the gap on the folding dynamics is studied, for various models of the transition probabilities between the different states of the protein. We show that for certain models, the relaxation to the native state is accelerated by increasing the gap, whereas for others it is slowed down .

Estelle Pitard; Henri Orland

1998-11-17T23:59:59.000Z

224

An investigation on reliable passivation of GaP  

E-Print Network [OSTI]

reports the results of a study of sputtered Silicon Nitride 3N4) and Anodic Oxide as passivating techniques for Gallium Phosphide. Anodic Oxide was grown on GaP by anodizing the semiconductor in 30% hydrogen peroxide. The resulting oxide had an index... reports the results of a study of sputtered Silicon Nitride 3N4) and Anodic Oxide as passivating techniques for Gallium Phosphide. Anodic Oxide was grown on GaP by anodizing the semiconductor in 30% hydrogen peroxide. The resulting oxide had an index...

Greaves King, Carlos A.

2012-06-07T23:59:59.000Z

225

START-GAP3/DLC3 is a GAP for RhoA and Cdc42 and is localized in focal adhesions regulating cell morphology  

SciTech Connect (OSTI)

In the human genome there are three genes encoding RhoGAPs that contain the START (steroidogenic acute regulatory protein (StAR)-related lipid transfer)-domain. START-GAP3/DLC3 is a tumor suppressor gene similar to two other human START-GAPs known as DLC1 or DLC2. Although expression of START-GAP3/DLC3 inhibits the proliferation of cancer cells, its molecular function is not well understood. In this study we carried out biochemical characterization of START-GAP3/DLC3, and explored the effects of its expression on cell morphology and intracellular localization. We found that START-GAP3/DLC3 serves as a stimulator of PLC{delta}1 and as a GAP for both RhoA and Cdc42 in vitro. Moreover, we found that the GAP activity is responsible for morphological changes. The intracellular localization of endogenous START-GAP3/DLC3 was explored by immunocytochemistry and was revealed in focal adhesions. These results indicate that START-GAP3/DLC3 has characteristics similar to other START-GAPs and the START-GAP family seems to share common characteristics.

Kawai, Katsuhisa; Kiyota, Minoru; Seike, Junichi; Deki, Yuko [Graduate School of Life Science, University of Hyogo, Harima Science Garden City, Hyogo-ken 678-1297 (Japan); Yagisawa, Hitoshi [Graduate School of Life Science, University of Hyogo, Harima Science Garden City, Hyogo-ken 678-1297 (Japan)], E-mail: yagisawa@sci.u-hyogo.ac.jp

2007-12-28T23:59:59.000Z

226

Verification of the Taylor (minimum energy) state in a spheromak  

Science Journals Connector (OSTI)

Experimental measurements of the equilibrium in the S?1 spheromak [M. Yamada J. Sinnis H. P. Furth M. Okabayashi G. Sheffield T. H. Stix and A. M. M. Todd in P r o c e e d i n g s o f t h e U S?J a p a n S y m p o s i u m o n C o m p a c t T o r u s e s a n d E n e r g e t i c P a r t i c l e I n j e c t i o n (Princeton Plasma Physics Laboratory Princeton NJ 1979) p. 171] by use of magnetic probes inside the plasma show that the final magnetic equilibrium is one that has relaxed close to the Taylor (minimum?energy) state even though the plasma is far from that state during formation. The comparison is made by calculating the two?dimensional ? profile of the plasma from the probe data where ? is defined as ?0? j ?/B. Measurements using a triple Langmuir probe proved evidence to support the conclusion that the pressure gradients in the relaxed state are confined to the edge region of the plasma.

G. W. Hart; A. Janos; D. D. Meyerhofer; M. Yamada

1986-01-01T23:59:59.000Z

227

Minimum error discrimination between similarity-transformed quantum states  

SciTech Connect (OSTI)

Using the well-known necessary and sufficient conditions for minimum error discrimination (MED), we extract an equivalent form for the MED conditions. In fact, by replacing the inequalities corresponding to the MED conditions with an equivalent but more suitable and convenient identity, the problem of mixed state discrimination with optimal success probability is solved. Moreover, we show that the mentioned optimality conditions can be viewed as a Helstrom family of ensembles under some circumstances. Using the given identity, MED between N similarity transformed equiprobable quantum states is investigated. In the case that the unitary operators are generating a set of irreducible representation, the optimal set of measurements and corresponding maximum success probability of discrimination can be determined precisely. In particular, it is shown that for equiprobable pure states, the optimal measurement strategy is the square-root measurement (SRM), whereas for the mixed states, SRM is not optimal. In the case that the unitary operators are reducible, there is no closed-form formula in the general case, but the procedure can be applied in each case in accordance to that case. Finally, we give the maximum success probability of optimal discrimination for some important examples of mixed quantum states, such as generalized Bloch sphere m-qubit states, spin-j states, particular nonsymmetric qudit states, etc.

Jafarizadeh, M. A. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Research Institute for Fundamental Sciences, Tabriz 51664 (Iran, Islamic Republic of); Sufiani, R. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Mazhari Khiavi, Y. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of)

2011-07-15T23:59:59.000Z

228

Transmission resonance spectroscopy in the third minimum of 232Pa  

Science Journals Connector (OSTI)

The fission probability of 232Pa was measured as a function of the excitation energy in order to search for hyperdeformed (HD) transmission resonances using the (d,pf) transfer reaction on a radioactive 231Pa target. The experiment was performed at the Tandem accelerator of the Maier-Leibnitz Laboratory (MLL) at Garching using the 231Pa(d,pf) reaction at a bombarding energy of Ed=12 MeV and with an energy resolution of ?E=5.5 keV. Two groups of transmission resonances have been observed at excitation energies of E*=5.7 and 5.9 MeV. The fine structure of the resonance group at E*=5.7 MeV could be interpreted as overlapping rotational bands with a rotational parameter characteristic to a HD nuclear shape (?2/2?=2.10±0.15 keV). The fission barrier parameters of 232Pa have been determined by fitting talys 1.2 nuclear reaction code calculations to the overall structure of the fission probability. From the average level spacing of the J=4 states, the excitation energy of the ground state of the third minimum has been deduced to be EIII=5.05?0.10+0.40 MeV.

L. Csige; M. Csatlós; T. Faestermann; J. Gulyás; D. Habs; R. Hertenberger; M. Hunyadi; A. Krasznahorkay; H. J. Maier; P. G. Thirolf; H.-F. Wirth

2012-05-07T23:59:59.000Z

229

Pilot Scale Tests Alden/Concepts NREC Turbine  

SciTech Connect (OSTI)

Alden Research Laboratory, Inc. has completed pilot scale testing of the new Alden/Concepts NREC turbine that was designed to minimize fish injury at hydropower projects. The test program was part of the U.S. Department of Energy's Advanced Hydropower Turbine Systems Program. The prototype turbine operating point was 1,000 cfs at 80ft head and 100 rpm. The turbine was design to: (1) limit peripheral runner speed; (2) have a high minimum pressure; (3) limit pressure change rates; (4) limit the maximum flow shear; (5) minimize the number and total length of leading blade edges; (6) maximize the distance between the runner inlet and the wicket gates and minimize clearances (i.e., gaps) between other components; and (7) maximize the size of flow passages.

Thomas C. Cook; George E.Hecker; Stephen Amaral; Philip Stacy; Fangbiao Lin; Edward Taft

2003-09-30T23:59:59.000Z

230

BRIDGING THE GAP BETWEEN BUILDING SCIENCE AND DESIGN STUDIOS  

E-Print Network [OSTI]

in the building industry and, to be effective, they need to be integrated into architectural design from, there is a lack of courses that allow for integrated building design through consideration of multiple performanceBRIDGING THE GAP BETWEEN BUILDING SCIENCE AND DESIGN STUDIOS KONSTANTINOS PAPAMICHAEL AND VINEETA

231

RIFLE GAP RESERVOIR FISHERY INVESTIGATION Photo: Willow Hibbs  

E-Print Network [OSTI]

in western Colorado, hosts a popular recreational fishery. Historically, stocked rainbow and brown trout have Department of Fish, Wildlife and Conservation Biology, Colorado State University Tel: 970-491-5002 email, Wildlife and Conservation Biology, Colorado State University March 2009 #12;Rifle Gap Reservoir Fishery

232

Topology of Local Health Officials' Advice Networks: Mind the Gaps  

E-Print Network [OSTI]

, evidence-based programs, and service delivery, and health care reform are innovations Author AffiliationsTopology of Local Health Officials' Advice Networks: Mind the Gaps Jacqueline Merrill, RN, MPH: To determine how a health officials' advice network might contribute to a high-performing public health systems

Sadeh, Norman M.

233

Abstract Local Reasoning for Concurrent Libraries: Mind the Gap  

E-Print Network [OSTI]

considerable work on combining lo- cal reasoning with abstraction. There are two main approaches. One approach, truly abstract reasoning of a tree module (such as DOM) works with predicates based on connecting treeMFPS 2014 Abstract Local Reasoning for Concurrent Libraries: Mind the Gap Philippa Gardner, Azalea

Gardner, Philippa

234

Minimum Cost Path Problem for Plug-in Hybrid Electric Vehicles  

E-Print Network [OSTI]

Feb 4, 2014 ... Abstract: We introduce a practically important and theoretically challenging problem: finding the minimum cost path for plug-in hybrid electric ...

Okan Arslan

2014-02-04T23:59:59.000Z

235

Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap  

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

6: April 28, 6: April 28, 2008 The Petroleum Gap to someone by E-mail Share Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Facebook Tweet about Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Twitter Bookmark Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Google Bookmark Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Delicious Rank Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Digg Find More places to share Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on AddThis.com... Fact #516: April 28, 2008 The Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed U.S. petroleum production for the first time, creating a gap that must be met

236

Bees and Scarlet-Runner Beans  

Science Journals Connector (OSTI)

... flower by penetrating the calyx and corolla close to the position of the nectaries, the humble bees with their stronger mandibles biting through the sepals, while the honey bees took ... this year I find no such depredations made on the blossoms, but all the numerous humble bees are getting the nectar in a legitimate way, that apparently indicated by Nature, ...

HARFORD J. LOWE

1921-07-28T23:59:59.000Z

237

Bees and Scarlet-Runner Beans  

Science Journals Connector (OSTI)

... and in their behaviour towards them. Instead of the smaller black and black with grey humble-bees busy over the blooms in what I termed the legitimate way, there were ... termed the legitimate way, there were numbers of a larger, yellow-banded species of humble-bee that had bitten every newly developed bloom and were searching the nectaries through the ...

HARFORD J. LOWE

1921-08-11T23:59:59.000Z

238

Bees and Scarlet-Runner Beans  

Science Journals Connector (OSTI)

... open flower that had not been pierced through the base of the corolla by the humble-bees in the way described. During the drought there was never more than an ... pierced at the base. It is clear, therefore, that the evil practice of the humble-bees does not necessarily lead to barrenness, and may possibly not do any harm ...

H. B. HEYWOOD

1921-09-29T23:59:59.000Z

239

Developing Secure Power Systems Professional Competence: Alignment and Gaps  

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

Developing Secure Power Systems Professional Competence: Alignment Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs - Phase 2 (July/August 2013) Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs - Phase 2 (July/August 2013) DOE has recognized that the electricity industry needs workforce development resources that can aid in the accelerating need for Secure Power Systems Professionals, while at the same time identifying capabilities and competencies to protect and enable the modernized grid currently being built. In the spring of 2011 a project was initiated to identify those capabilities and competencies along with assessing the need and qualifications for a certification program for Secure Power Systems

240

Microsoft Word - IMBA Gap Analysis Final 20060831.doc  

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

DOE/EH-0711 DOE/EH-0711 Gap Analysis for IMBA and DOE Safety Software Central Registry Recommendation Final U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Avenue, S.W. Washington, D.C. 20585-2040 August 2006 DOE/EH-0711 i INTENTIONALLY BLANK DOE/EH-0711 ii FOREWORD This report documents the outcome of an evaluation of the safety software quality assurance attributes of the Integrated Modules for Bioassay Analysis (IMBA) Expert (tm) USDOE-Edition and Professional Plus computer products relative to the safety software requirements identified in DOE O 414.1C, Quality Assurance. This evaluation, a gap analysis, is performed according to DOE G 414.1-4 and is a requisite

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Pleasant Gap, Pennsylvania: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Gap, Pennsylvania: Energy Resources Gap, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.8681177°, -77.7466665° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.8681177,"lon":-77.7466665,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

242

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries  

SciTech Connect (OSTI)

Structure and electronic properties of carbon nanotubes (CNTs) with grain boundaries (GBs) are investigated using density-functional calculations, where the GBs parallel and perpendicular to the tube axis are considered. Simulation results show that the GBs have a great effect on the electronic properties of the CNTs. For the GBs along the tube axis, the CNTs are narrow or zero band gap (<0.16 eV) materials, independent of the misorientation angle and diameter. For the GBs perpendicular to the tube axis, localized electronic states appear within the GBs regions, leading to a larger band gap of up to 0.6 eV. It is convenient to transport and localize the electrons and holes by engineering the GBs. These findings are of great significance for developing carbon-based nanomaterials and electronic devices.

Wang, Zhiguo; Zhou, Yungang; Zhang, Yanwen; Gao, Fei

2012-01-26T23:59:59.000Z

243

Damping of lower hybrid waves in large spectral gap configurations  

SciTech Connect (OSTI)

Extensive experimental data support reliable power deposition and current drive by lower-hybrid (LH) waves in conditions where a large spectral gap exists between the nominal parallel index of refraction prescribed by the antenna characteristics and phasing, and that required for significant Landau damping to take place. We argue that only a significant modification of the initial spectrum at the plasma edge could explain experimental observations. Based on this assumption, a new prescription for reliable simulations of LH current drive using ray-tracing and Fokker-Planck modelling is proposed. A remarkable agreement between experimental observations in the Tore Supra tokamak and simulations is obtained for relevant parametric scans, including electron density and LH waveguide phasing. In an effort to investigate the possible role of fluctuations, it is shown that the spectral gap can be bridged dynamically in the presence of a fluctuating LH spectrum.

Decker, J.; Peysson, Y.; Artaud, J.-F.; Nilsson, E.; Ekedahl, A.; Goniche, M.; Hillairet, J.; Mazon, D. [CEA, IRFM, F-13108 Saint Paul lez Durance (France)

2014-02-12T23:59:59.000Z

244

Valley pair qubits in double quantum dots of gapped graphene  

E-Print Network [OSTI]

The rise of graphene opens a new door to qubit implementation, as discussed in the recent proposal of valley pair qubits in double quantum dots of gapped graphene (Wu et al., arXiv: 1104.0443 [cond-mat.mes-hall]). The work here presents the comprehensive theory underlying the proposal. It discusses the interaction of electrons with external magnetic and electric fields in such structures. Specifically, it examines a strong, unique mechanism, i.e., the analogue of the 1st-order relativistic effect in gapped graphene. This mechanism is state mixing free and allows, together with the electrically tunable exchange coupling, a fast, all-electric manipulation of qubits via electric gates, in the time scale of ns. The work also looks into the issue of fault tolerance in a typical case, yielding at 10oK a long qubit coherence time (~O(ms)).

G. Y. Wu; N. -Y. Lue; L. Chang

2011-07-03T23:59:59.000Z

245

The information gap in corporate annual reports: evidence from Egypt  

Science Journals Connector (OSTI)

This study explores whether an information gap exists for six types of corporate disclosure in Egypt, where International Accounting Standards (IAS) apply but penalties for non-compliance are limited. It also investigates whether low compliance with mandatory disclosure can be explained by low levels of demand for this type of information among local financial analysts. The results identify a significant gap between actual disclosure practices of companies for various types of disclosure and market perceptions of this practice. Our findings also suggest that low compliance with disclosure requirements in Egypt is not driven by low levels of demand from local financial analysts, because these items of information are perceived as useful for investment decision making.

Omaima A.G. Hassan; Gianluigi Giorgioni; Peter Romilly; David M. Power

2012-01-01T23:59:59.000Z

246

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries  

SciTech Connect (OSTI)

Structure and electronic properties of carbon nanotubes (CNTs) with grain boundaries (GBs) are investigated using density-functional calculations, where the GBs parallel and perpendicular to the tube axis are considered. Simulation results show that the GBs have a great effect on the electronic properties of the CNTs. For the GBs along the tube axis, the CNTs are narrow or zero band gap (<0.16 eV) materials, independent of the misoritentaion angle and diameter. For the GBs perpendicular to the tube axis, localized electronic states appear within the GBs regions, leading to a larger band gap of up to 0.6 eV. It is convenient to transport and localize the electrons and holes by engineering the GBs. These findings are of great significance for developing carbon-based nanomaterials and electronic devices.

Wang, Zhiguo [Department of Applied Physics, University of Electronic Science and Technology of China; Zhou, Yungang [Department of Applied Physics, University of Electronic Science and Technology of China; Zhang, Yanwen [ORNL; Gao, Fei [ORNL

2011-01-01T23:59:59.000Z

247

Spark gap switch system with condensable dielectric gas  

DOE Patents [OSTI]

A spark gap switch system is disclosed which is capable of operating at a high pulse rate comprising an insulated switch housing having a purging gas entrance port and a gas exit port, a pair of spaced apart electrodes each having one end thereof within the housing and defining a spark gap therebetween, an easily condensable and preferably low molecular weight insulating gas flowing through the switch housing from the housing, a heat exchanger/condenser for condensing the insulating gas after it exits from the housing, a pump for recirculating the condensed insulating gas as a liquid back to the housing, and a heater exchanger/evaporator to vaporize at least a portion of the condensed insulating gas back into a vapor prior to flowing the insulating gas back into the housing.

Thayer, III, William J. (Kent, WA)

1991-01-01T23:59:59.000Z

248

FINDING THE GLOBAL MINIMUM FOR BINARY IMAGE RESTORATION Tony F. Chan  

E-Print Network [OSTI]

- est. In this paper we define the restored image as the global min- imizer of the total-variation (TVFINDING THE GLOBAL MINIMUM FOR BINARY IMAGE RESTORATION Tony F. Chan , Selim Esedo¯glu and Mila and there are no general methods to calculate the global minimum, while local minimziers are very often of limited inter

Esedoglu, Selim

249

Modeling the Global Structure of the Heliosphere during the Recent Solar Minimum  

E-Print Network [OSTI]

, Berkeley, California. Abstract. The recent solar minimum, marking the end of solar cycle 23, has beenModeling the Global Structure of the Heliosphere during the Recent Solar Minimum: Model Mikic and Janet G. Luhmann Predictive Science, San Diego, California. Harvard-Smithsonian Center

California at Berkeley, University of

250

Lost sunspot cycle in the beginning of Dalton minimum: New evidence and consequences  

E-Print Network [OSTI]

in the beginning of the Dalton minimum during 1790s [Usoskin et al., 2001]. Earlier, this cycle has been combinedLost sunspot cycle in the beginning of Dalton minimum: New evidence and consequences I. G. Usoskin November 2002; published 24 December 2002. [1] We have recently suggested that one solar cycle was lost

Usoskin, Ilya G.

251

An Exponential Improvement on the MST Heuristic for Minimum Energy Broadcasting  

E-Print Network [OSTI]

in energy saving. A naturally arising issue in ad hoc wireless networks is that of supporting communicationAn Exponential Improvement on the MST Heuristic for Minimum Energy Broadcasting in Ad Hoc Wireless Abstract. In this paper we present a new approximation algorithm for the Minimum Energy Broadcast Routing

Caragiannis, Ioannis

252

Solar change and climate: an update in the light of the current exceptional solar minimum  

Science Journals Connector (OSTI)

...review-article 2010 Anniversary Series 1005 41 169 Solar change and climate: an update in the light of the current exceptional solar minimum Mike Lockwood 1 2 * * m.lockwood...Chilton, Didcot, Oxfordshire, UK Solar outputs during the current solar minimum...

2010-01-01T23:59:59.000Z

253

On the Cost and Quality Tradeoff in Constructing Minimum-Energy Broadcast Trees in Wireless Ad  

E-Print Network [OSTI]

On the Cost and Quality Tradeoff in Constructing Minimum-Energy Broadcast Trees in Wireless Ad Hoc], each having a different complexity and produc- ing a broadcast tree with a different energy cost. Thus to the quality of the trees constructed. II. BUILDING BLOCKS The three ingredients that constitute any minimum-energy

Hu, Y. Charlie

254

ITP Steel: Theoretical Minimum Energies to Produce Steel for Selected Conditions, March 2000  

Broader source: Energy.gov [DOE]

The absolute theoretical minimum energies to produce liquid steel from idealized scrap (100% Fe) and ore (100% Fe2O3) are much lower than consumed in practice, as are the theoretical minimum energies to roll the steel into its final shape.

255

Graphical Visualisation of Minimum Energy Requirements for Multi-Effect Distillation Arrangements  

E-Print Network [OSTI]

of Chemical Engineering, 7491 Trondheim, Norway Abstract The minimum energy requirements of six different heat1 Graphical Visualisation of Minimum Energy Requirements for Multi-Effect Distillation Arrangements energy-consuming process, where distillation is the process most widely used for fluid separations

Skogestad, Sigurd

256

Bloat control and generalization pressure using the minimum description length principle for a  

E-Print Network [OSTI]

Bloat control and generalization pressure using the minimum description length principle to achieve these objectives based on the Minimum Description Length (MDL) principle. This principle solutions that are bigger than necessary, contradicting the Occam's razor principle [7] which says that "the

Bacardit, Jaume

257

Bloat control and generalization pressure using the minimum description length principle for a  

E-Print Network [OSTI]

Bloat control and generalization pressure using the minimum description length principle propose a method to achieve these objectives based on the Minimum Description Length (MDL) principle. This principle is a metric which combines in a smart way the accuracy and the complexity of a theory (rule set

Bacardit, Jaume

258

Technical Standards, CFAST-Gap Analysis - May 3, 2004 | Department of  

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

Gap Analysis - May 3, 2004 Gap Analysis - May 3, 2004 Technical Standards, CFAST-Gap Analysis - May 3, 2004 May 3, 2004 DOE-EH-4.2.1.3-CFAST-Gap Analysis, Software Quality Assurance Improvement Plan: CFAST Gap Analysis This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the CFAST computer code for accident analysis applications, relative to established requirements. This evaluation, a "gap analysis," is performed to meet commitment 4.2.1.3 of the Department of Energy's Implementation Plan to resolve SQA issues identified in the Defense Nuclear Facilities Safety Board Recommendation 2002-1. Technical Standards, CFAST-Gap Analysis More Documents & Publications Technical Standards, CFAST-Code Guidance - July 23, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004

259

Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap  

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

4: March 6, 2006 4: March 6, 2006 The Petroleum Gap to someone by E-mail Share Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Facebook Tweet about Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Twitter Bookmark Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Google Bookmark Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Delicious Rank Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Digg Find More places to share Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on AddThis.com... Fact #414: March 6, 2006 The Petroleum Gap Since 1989, the transportation sector alone has used more petroleum than the United States produces. The current projections indicate that by the

260

Fact #837: September 8, Gap between Net Imports and Total Imports...  

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

7: September 8, Gap between Net Imports and Total Imports of Petroleum is Widening Fact 837: September 8, Gap between Net Imports and Total Imports of Petroleum is Widening Net...

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Nanoscale gap filling for phase change material by pulsed deposition and inductively coupled plasma etching  

Science Journals Connector (OSTI)

The gap filling of phase change material has become a critical module in the fabrication process of phase change random access memory (PCRAM) as the ... . We achieved void free gap filling of phase change material

W. C. Ren; B. Liu; Z. T. Song; X. Z. Jing; B. C. Zhang; Y. H. Xiang…

2013-09-01T23:59:59.000Z

262

Engineered nanomaterials: knowledge gaps in fate, exposure, toxicity, and future directions  

Science Journals Connector (OSTI)

The aim of this study is to identify current knowledge gaps in fate, exposure, and toxicity of engineered nanomaterials (ENMs), highlight research gaps, and suggest future research directions. Humans and other living organisms are exposed to ENMs during ...

Arun Kumar, Prashant Kumar, Ananthitha Anandan, Teresa F. Fernandes, Godwin A. Ayoko, George Biskos

2014-01-01T23:59:59.000Z

263

Variation of treefall gap characteristics in an East Texas bottomland hardwood forest: effects of microtopography  

E-Print Network [OSTI]

Treefall gaps, formed as a result of small-scale disturbances, allow seedling recruitment and growth in late-successional forests. Many factors contribute to gap regime heterogeneity within and among forest stands, including wind and fire patterns...

Almquist, Benjamin Eric

1998-01-01T23:59:59.000Z

264

Of horseshoes and heliotropes: Dynamics of dust in the Encke Gap M.M. Hedman a,  

E-Print Network [OSTI]

Of horseshoes and heliotropes: Dynamics of dust in the Encke Gap M.M. Hedman a, , J.A. Burns a located within the Cassini Division's Laplace Gap demonstrates ``heliotropic'' behavior: its geometric

Hamilton, Douglas P.

265

Controlling electrode gap during vacuum arc remelting at low melting current  

DOE Patents [OSTI]

An apparatus and method are disclosed for controlling electrode gap in a vacuum arc remelting furnace, particularly at low melting currents. Spectrographic analysis is performed of the metal vapor plasma, from which estimates of electrode gap are derived. 5 figs.

Williamson, R.L.; Zanner, F.J.; Grose, S.M.

1997-04-15T23:59:59.000Z

266

Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid...  

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

Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid solutions: A first-principles study. Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid solutions: A...

267

Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap  

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

5: April 16, 5: April 16, 2007 The Petroleum Gap to someone by E-mail Share Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Facebook Tweet about Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Twitter Bookmark Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Google Bookmark Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Delicious Rank Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Digg Find More places to share Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on AddThis.com... Fact #465: April 16, 2007 The Petroleum Gap (Revised April 18, 2007) Since 1989, the transportation sector alone has used more petroleum than

268

Wide-gap a-Si:H fabricated by controlling voids  

SciTech Connect (OSTI)

High quality wide gap hydrogenated amorphous silicon has been prepared using the chemical annealing technique. It was possible to prepare materials with band gaps ranging 1.8 to 2.1 eV by varying the preparation parameters. Low defect densities less than (3--8) {times} 10{sup 15} cm{sup {minus}3} could be maintained over the entire band gap range. Improved stability for light soaking was also observed in the wide gap materials.

Yoshino, K.; Futako, W.; Wasai, Y.; Shimizu, I. [Tokyo Inst. of Tech., Yokohama (Japan). Graduate School

1996-12-31T23:59:59.000Z

269

Electric strength of the accelerating gap of a plasma electron source at rough vacuum  

Science Journals Connector (OSTI)

Conditions for the electric breakdown of the accelerating gap of a plasma electron source are determined. It is shown that,...

V. A. Burdovitsin; M. N. Kuzemchenko; E. M. Oks

2002-07-01T23:59:59.000Z

270

OIKOS 101: 499504, 2003 Do seedlings in gaps interact? A field test of assumptions in ESS  

E-Print Network [OSTI]

OIKOS 101: 499­504, 2003 Do seedlings in gaps interact? A field test of assumptions in ESS seed seedlings in gaps interact? A field test of assumptions in ESS seed size models. ­ Oikos 101: 499­504. ESS for the occupancy of `safe sites' or vegetation gaps. If mortality rates are high and/or frequency-independent, ESS

Silvertown, Jonathan

271

The Quasi-Distributed Gap Technique for Planar Inductors-Design Guidelines  

E-Print Network [OSTI]

The Quasi-Distributed Gap Technique for Planar Inductors-Design Guidelines Jiankun Hu C. R The Quasi-Distributed Gap Technique for Planar Inductors: Design Guidelines Jiankun Hu Charles R. Sullivan of low-permeability magnetic material to form a uniformly distributed gap can facilitate the design

272

Penetration of plasma into the wafer-focus ring gap in capacitively coupled plasmas  

E-Print Network [OSTI]

Penetration of plasma into the wafer-focus ring gap in capacitively coupled plasmas Natalia Y of capacitively coupled plasma reactors with a wafer-focus ring gap. The penetration of plasma generated species i.e., ions and radicals into the wafer-focus ring gap is discussed. We found that the penetration of plasma

Kushner, Mark

273

THE DEVIL’S STAIRCASE DIMENSIONS AND MEASURE-THEORETICAL ENTROPY OF MAPS WITH HORIZONTAL GAP  

E-Print Network [OSTI]

Abstract. This work elucidates the measure-theoretical entropy and dimensions of a unimodal map with a horizontal gap. The measure-theoretical entropy and dimensions of the Ft (which is defined later)are shown to form a devil’s staircase structure with respect to the gap size t. Pesin’s formula for gap maps is also considered. 1.

Jung-chao Ban; Song-sun Lin

274

"Table A52. Nonswitchable Minimum Requirements and Maximum Consumption"  

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

2. Nonswitchable Minimum Requirements and Maximum Consumption" 2. Nonswitchable Minimum Requirements and Maximum Consumption" " Potential by Census Region, 1991" " (Estimates in Physical Units)" ,,,,"RSE" ,"Actual","Minimum","Maximum","Row" "Type of Energy","Consumption","Consumption(a)","Consumption(b)","Factors" "RSE Column Factors:",1,1.2,0.8 ," Total United States" ,"-","-","-" "Electricity Receipts(c) (million kilowatthours)",718480,701478,766887,2 "Natural Gas (billion cubic feet)",5345,3485,5887,2 "Distillate Fuel Oil (thousand barrels)",23885,19113,201081,3.7 "Residual Fuel Oil (thousand barrels)",65837,36488,201921,2.6

275

The 6/94 gap in health impact assessment  

SciTech Connect (OSTI)

Health impact assessment (HIA), a methodology that aims to facilitate the mitigation of negative and enhancement of positive health effects due to projects, programmes and policies, has been developed over the past 20-30 years. There is an underlying assumption that HIA has become a full fledged critical piece of the impact assessment process with a stature equal to both environmental and social impact assessments. This assumption needs to be supported by evidence however. Within the context of projects in developing country settings, HIA is simply a slogan without a clearly articulated and relevant methodology, offered by academia and having little or no salience in the decision-making process regarding impacts. This harsh assertion is supported by posing a simple question: 'Where in the world have HIAs been carried out?' To answer this question, we systematically searched the peer-reviewed literature and online HIA-specific databases. We identified 237 HIA-related publications, but only 6% of these publications had a focus on the developing world. What emerges is, therefore, a huge disparity, which we coin the 6/94 gap in HIA, even worse than the widely known 10/90 gap in health research (10% of health research funding is utilized for diseases causing 90% of the global burden of disease). Implications of this 6/94 gap in HIA are discussed with pointed emphasis on extractive industries (oil/gas and mining) and water resources development. We conclude that there is a pressing need to institutionalize HIA in the developing world, as a consequence of current predictions of major extractive industry and water resources development, with China's investments in these sectors across Africa being particularly salient.

Erlanger, Tobias E. [Department of Public Health and Epidemiology, Swiss Tropical Institute, CH-4002 Basel (Switzerland)], E-mail: tobias.erlanger@unibas.ch; Krieger, Gary R. [NewFields, LLC, Denver, CO 80202 (United States)], E-mail: gkrieger@newfields.com; Singer, Burton H. [Office of Population Research, Princeton University, Princeton, NJ 08544 (United States)], E-mail: singer@princeton.edu; Utzinger, Juerg [Department of Public Health and Epidemiology, Swiss Tropical Institute, CH-4002 Basel (Switzerland)], E-mail: juerg.utzinger@unibas.ch

2008-05-15T23:59:59.000Z

276

Rapidity gap signals in Higgs-boson production at the SSC  

Science Journals Connector (OSTI)

We examine the structure of the underlying event in neutral Higgs-boson production at the Superconducting Super Collider (SSC). Gaps, regions of rapidity containing no soft particle production, can provide a clean signature for W boson fusion to the heavy Higgs boson. We first examine the physical basis of gap production and estimate the survival probability of gaps in the minijet model. Then, using pythia, and herwig, we compare gap events to W pair production from top quark decay and qq¯ fusion. We find that, if experimental problems can be overcome, gaps should provide a small, but clean, signal for heavy Higgs-boson production at the SSC.

R. S. Fletcher and T. Stelzer

1993-12-01T23:59:59.000Z

277

Lattice Boltzmann model for photonic band gap materials  

Science Journals Connector (OSTI)

An efficient technique for computing photonic band structure and defect modes is proposed based on the lattice Boltzmann model. Physically, it is a scheme based on the kinetics of the virtual microscopic process, rather than a solution of the macroscopic Maxwell equations. The method has significant advantages of being naturally suited for massively parallel machine, as well as speed and convenience, providing another methodology for photonic band gap materials and, also, for general electromagnetic scattering problems in open region when incorporated with the perfectly matched layer technique.

Zhifang Lin; Haiping Fang; Jianjun Xu; Jian Zi; Xiangdong Zhang

2003-02-07T23:59:59.000Z

278

Gap-dependent transitions of atmospheric microplasma in open air  

SciTech Connect (OSTI)

We report on the gap dependence of the planar atmospheric microplasma in air. We investigate the transitions of the dielectric barrier discharge in open air, including the random walk filaments (plasma columns), localized filaments, stochastic filaments, and diffuse discharge. A star-shaped filamentary discharge pattern is observed after the formation of the localized filaments. The liquid drops found on the dielectric surface further become a confining pattern for star-shaped discharge. We also demonstrate the applications of the insulating pattern for the use of the plasma display in open air by the handwritten characters with UV adhesive.

Chu, Hong-Yu; Huang, Bo-Shiun [Department of Physics, National Chung Cheng University, ChiaYi 62102, Taiwan (China)

2011-04-15T23:59:59.000Z

279

Random-Gap Model for Graphene and Graphene Bilayers  

Science Journals Connector (OSTI)

The effect of a randomly fluctuating gap, created by a random staggered potential, is studied in a monolayer and a bilayer of graphene. The density of states, the one-particle scattering rate, and the transport properties (diffusion coefficient and conductivity) are calculated at the neutrality point. All of these quantities vanish at a critical value of the average staggered potential, signaling a continuous transition to an insulating behavior. Transport quantities are directly linked to the one-particle scattering rate. Although the behavior is qualitatively the same in mono- and bilayers, the effect of disorder is much stronger in the latter.

K. Ziegler

2009-03-24T23:59:59.000Z

280

Direct control of air gap flux in permanent magnet machines  

DOE Patents [OSTI]

A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.

Hsu, John S. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Origin of the optical gap in half-doped manganites  

Science Journals Connector (OSTI)

We have analyzed the coexisting charge and orbital ordering in half-doped manganites using a model which includes Coulomb and Jahn-Teller orbital polarization interactions. Most surprisingly, the gap in the optical conductivity is reduced by both on-site and intersite Coulomb interactions, but increases and explains the experimental results when the Jahn-Teller terms with orbital polarization are considered. The origin of this behavior is explained within a molecular model which arises in the limit of extreme topological frustration, when single electrons are confined to molecular units consisting of three orbitals.

Mario Cuoco; Canio Noce; Andrzej M. Ole?

2002-09-25T23:59:59.000Z

282

Fermi velocity renormalization and dynamical gap generation in graphene  

E-Print Network [OSTI]

We study the renormalization of the Fermi velocity by the long-range Coulomb interactions between the charge carriers in the Dirac-cone approximation for the effective low-energy description of the electronic excitations in graphene at half filling. Solving the coupled system of Dyson-Schwinger equations for the dressing functions in the corresponding fermion propagator with various approximations for the particle-hole polarization we observe that Fermi velocity renormalization effects generally lead to a considerable increase of the critical coupling for dynamical gap generation and charge-density wave formation at the semimetal-insulator transition.

C. Popovici; C. S. Fischer; L. von Smekal

2015-01-12T23:59:59.000Z

283

Low-pressure spark gap triggered by an ion diode  

DOE Patents [OSTI]

Spark gap apparatus for use as an electric switch operating at high voltage, high current and high repetition rate. Mounted inside a housing are an anode, cathode and ion plate. An ionizable fluid is pumped through the chamber of the housing. A pulse of current to the ion plate causes ions to be emitted by the ion plate, which ions move into and ionize the fluid. Electric current supplied to the anode discharges through the ionized fluid and flows to the cathode. Current stops flowing when the current source has been drained. The ionized fluid recombines into its initial dielectric ionizable state. The switch is now open and ready for another cycle.

Prono, D.S.

1982-08-31T23:59:59.000Z

284

Nonlinear Photon-Assisted Tunneling Transport in Optical Gap Antennas  

Science Journals Connector (OSTI)

(16, 17) For instance, incoming photons can exchange energy with tunneling charges modifying thus the conductance of the barrier(18, 19) and strong-field effects were recently reported. ... (32) The height ? of the potential barriers can be directly deduced from these two minima. ... Two lock-in amplifiers referenced at Fmod and 2Fmod output a signal proportional to the differential conductance I? = Vac(?Ib/?Vb) of the gap antenna and signal proportional to the nonlinearity of the conductance I? = 1/4Vac2(?2Ib/?Vb2), respectively. ...

Arnaud Stolz; Johann Berthelot; Marie-Maxime Mennemanteuil; Gérard Colas des Francs; Laurent Markey; Vincent Meunier; Alexandre Bouhelier

2014-04-03T23:59:59.000Z

285

Technical Standards, MACCS2, Gap Analysis - May 3, 2004 | Department of  

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

MACCS2, Gap Analysis - May 3, 2004 MACCS2, Gap Analysis - May 3, 2004 Technical Standards, MACCS2, Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MACCS2 Gap Analysis The MACCS2 software, for radiological dispersion and consequence analysis, is one of the codes designated for the toolbox. To determine the actions needed to bring the MACCS2 code into compliance with the SQA qualification criteria, and develop an estimate of the resources required to perform the upgrade, the Implementation Plan has committed to sponsoring a code-specific gap analysis document. Technical Standards, MACCS2, Gap Analysis More Documents & Publications Technical Standards, Guidance on MACCS2 Computer Code - June 30, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004

286

Bridge the Gap 2014 --Guidance for Participants Requiring Level Access This level-access route is meant to accommodate Bridge the Gap participants using  

E-Print Network [OSTI]

or there is an alternative route in to the College theough the Golden Gate. There will be a steward on hand to assist. 12Bridge the Gap 2014 -- Guidance for Participants Requiring Level Access This level-access route is meant to accommodate Bridge the Gap participants using wheelchairs, mobility scooters and pushchairs

Travis, Adrian

287

A Novel Approximation Algorithm for Minimum Geometric Disk Cover Problem with Hexagon Tessellation  

Science Journals Connector (OSTI)

Given a set P ofn...points in the Euclidean plane, the minimum geometric disk cover (MGDC) problem is to identify a minimally sized set of congruent disks with prescribed radiusr that cover all the points in P. I...

Chi-Yu Chang; Chi-Chang Chen; Cheng-Chun Liu

2013-01-01T23:59:59.000Z

288

A Cycle Augmentation Algorithm for Minimum Cost Multicommodity Flows on a Ring  

E-Print Network [OSTI]

A Cycle Augmentation Algorithm for Minimum Cost Multicommodity Flows on a Ring Bruce Shepherd bshep of Ford and Fulkerson [5]. We mention that a similar state of affairs held for generalized

Shepherd, Bruce

289

Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization  

E-Print Network [OSTI]

The affine rank minimization problem consists of finding a matrix of minimum rank that satisfies a given system of linear equality constraints. Such problems have appeared in the literature of a diverse set of fields ...

Recht, Benjamin

290

Extreme Poverty Indicator: Proportion of Population Below Minimum Level of Dietary Energy Consumption  

Science Journals Connector (OSTI)

Based on the comparison of many current poverty measurement indicators in the world, the report has chosen the most basic ... proportion of population below minimum level of dietary energy consumption”.

Qi Zhang; Fei Li

2014-01-01T23:59:59.000Z

291

J 4.8 MODELING THE TALLAHASSEE MINIMUM TEMPERATURE ANOMALY Kelly G. Godsey*  

E-Print Network [OSTI]

1 J 4.8 MODELING THE TALLAHASSEE MINIMUM TEMPERATURE ANOMALY Kelly G. Godsey* 1,2 , Henry E author address: Kelly G. Godsey, NWS, Morristown, TN 37814; email: Kelly.Godsey@noaa.gov #12;2 Fig. 1

Fuelberg, Henry

292

Field-reversed configuration (FRC) as a minimum-dissipative relaxed state  

Science Journals Connector (OSTI)

The field-reversed configuration (FRC) with a completely null toroidal field and finite plasma beta is shown to result from a relaxation mechanism based on the principle of minimum dissipation of energy.

R Bhattacharyya; M.S Janaki; B Dasgupta

2001-01-01T23:59:59.000Z

293

Computer simulation of optimal functioning regimes with minimum fuel consumption for automotives  

Science Journals Connector (OSTI)

The paper deals with computer simulation that allows the calculus of operating regimes with minimum fuel consumption for road vehicles, using engine’s mechanical characteristics for power and consumption, charact...

Salvadore Mugurel Burciu

2014-10-01T23:59:59.000Z

294

Minimum Energy Cost k-barrier Coverage in Wireless Sensor Networks  

Science Journals Connector (OSTI)

Barrier coverage problem is one of important issues in wireless sensor networks. In this paper we study the minimum energy cost k-barrier coverage problem in wireless sensor network in which each sensor has l...?...

Huiqiang Yang; Deying Li; Qinghua Zhu…

2010-01-01T23:59:59.000Z

295

A network approach for identifying minimum-cost aircraft routing and fuel-allocating decisions  

E-Print Network [OSTI]

for the degree of MASTER OF SCIENCE December 1988 Major Subject: Industrial Engineering A NETWORK APPROACH FOR IDENTIFYING MINIMUM-COST AIRCRAFT ROUTING AJVD FUEL-ALLOCATING DECISIONS A Thesis by NADER MAHMOUD KABBAVI Approved as to style and content by...A NETWORK APPROACH FOR IDENTIFYING MINIMUM-COST AIRCRAFT ROUTING AND FUEL-ALLOCATING DECISIONS A Thesis by NADER MAHMOUD KABBANI Submitted to the OIIice of Graduate Studies of Texas AkM University in partial fulfillment of the requirement...

Kabbani, Nader Mahmoud

1988-01-01T23:59:59.000Z

296

Minimum thickness for circumferential sleeve repair fillet welds in corroded gas pipelines  

Science Journals Connector (OSTI)

The minimum weldable pipe wall thickness for sleeve repair welds is numerically assessed in this work, as a function of pressure during the welding operations of a corroded gas pipeline, according to the approach by Battelle. The minimum weldable thickness is found to increase when the flow rate of the transported gas in the section being repaired increases. Integrity of the repairs is assessed, and alternative measures to momentarily increase the flow in the area of the repair are evaluated.

A.P Cisilino; M.D Chapetti; J.L Otegui

2002-01-01T23:59:59.000Z

297

Strain energy minimum and vibrational properties of single-walled aluminosilicate nanotubes Suchitra Konduri, Sanjoy Mukherjee, and Sankar Nair*  

E-Print Network [OSTI]

Strain energy minimum and vibrational properties of single-walled aluminosilicate nanotubes study the origin of the strain energy minimum in a single-walled aluminosilicate nanotube via a har- persity in the nanotube diameter is explained in terms of a minimum in the strain energy due

Nair, Sankar

298

A Dynamic Localized Minimum-Energy Agent Tree-Based Data Dissemination Scheme for Wireless Sensor Networks  

E-Print Network [OSTI]

A Dynamic Localized Minimum-Energy Agent Tree-Based Data Dissemination Scheme for Wireless Sensor this prob- lem by proposing a minimum-energy tree-based data dissemination scheme, Dynamic Localized Minimum-Energy Agent Tree-Based Scheme (DLATS). We exploit the fact that sensor nodes are stationary and location

Holliday, JoAnne

299

1906 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 53, NO. 11, NOVEMBER 2005 Minimum-Energy Multicast in Mobile Ad Hoc  

E-Print Network [OSTI]

in polynomial time, in sharp con- trast with the NP-hardness of constructing the minimum-energy multicast tree with a single tree is presented. The minimum energy-per-bit for multicasting with routing is found by an integer in the Steiner tree literature, can now be interpreted as the optimization for minimum energy multicasting

Chen, Yuanzhu Peter

300

TECHNICAL REPORT TR-09-04, UC DAVIS, SEPTEMBER 2009. 1 Minimum-Energy Multicast Tree in Cognitive Radio Networks  

E-Print Network [OSTI]

TECHNICAL REPORT TR-09-04, UC DAVIS, SEPTEMBER 2009. 1 Minimum-Energy Multicast Tree in Cognitive guarantee for constructing the minimum-energy multicast tree, which transforms the multicast problem load of the primary network on the minimum-energy multicast tree. I. INTRODUCTION Multicast can provide

Islam, M. Saif

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Major in Aerospace Engineering Master of Engineering (with creative component) A minimum of 27 credits of acceptable  

E-Print Network [OSTI]

Major in Aerospace Engineering Master of Engineering (with creative component) ­ A minimum of 27 Engineering along with a minimum of 3 credits of Aer E 599 (creative component) must be taken. The POS Mechanics Master of Engineering (with creative component) ­ A minimum of 24 credits of acceptable course

Lin, Zhiqun

302

Minimum-Energy Filtering on the Unit Circle Using Velocity Measurements with Bias and Vectorial state Measurements  

E-Print Network [OSTI]

Minimum-Energy Filtering on the Unit Circle Using Velocity Measurements with Bias and Vectorial consider minimum-energy filtering of a system defined on the unit circle when the angular velocity measure approximate minimum- energy filter for this system using vectorial measurements. This work extends prior work

Trumpf, Jochen

303

Method of Controlling Corona Effects and Breakdown Voltage of Small Air Gaps Stressed by Impulse Voltages  

E-Print Network [OSTI]

This paper investigates the influence of a resistor on the dielectric behavior of an air gap. The resistor is connected in series with the air gap and the latter is stressed by impulse voltage. Air gap arrangements of different geometry with either the rod or the plate grounded are stressed with impulse voltages of both positive and negative polarity. The resistor is connected in series with the air gap in the return circuit connecting the gap with the impulse generator. The method followed involves the investigation of the graphs of the charging time concerning the air gaps capacitances, in connection to the value of the resistor, the geometry of the gap, the effect of grounding and the polarity effect. It is determined that the charging time of the air gap increases, as the value of the resistor increases. It is also determined that the peak voltage value of the fully charged air gap decreases as the value of the resistor increases. The results of the mathematical and simulation analysis are compared with the results of the oscillograms taken from experimental work. In addition and consequently to the above results it is concluded from the experimental work that the in series connection of the resistor in the circuit has significant influence on corona pulses (partial discharges) occurring in the gap and on the breakdown voltage of the gap. A new method of controlling the corona effects and consequently the breakdown voltage of small air gaps stressed by impulse voltage of short duration in connection to the ground effect and the polarity effect has arisen. Furthermore through mathematical analysis of the charging graphs obtained from simulation and experimental oscillograms there was a calculation of the values of the capacitance of the air gaps in relation to their geometry and the results were compared to the values calculated with mathematical analysis.

Athanasios Maglaras; Trifon Kousiouris; Frangiskos Topalis; Dimitrios Katsaros; Leandros A. Maglaras; Konstantina Giannakopoulou

2014-10-15T23:59:59.000Z

304

Interferometric Detection of Planets/Gaps in Protoplanetary Disks  

E-Print Network [OSTI]

We investigate the possibility to find evidence for planets in circumstellar disks by infrared and submillimeter interferometry. Hydrodynamical simulations of a circumstellar disk around a solar-type star with an embedded planet of 1 Jupiter mass are presented. On the basis of 3D radiative transfer simulations, images of this system are calculated. These intensity maps provide the basis for the simulation of the interferometers VLTI (equipped with the mid-infrared instrument MIDI) and ALMA. While ALMA will provide the necessary basis for a direct gap and therefore indirect planet detection, MIDI/VLTI will provide the possibility to distinguish between disks with or without accretion on the central star on the basis of visibility measurements.

S. Wolf; F. Gueth; Th. Henning; W. Kley

2002-08-26T23:59:59.000Z

305

Review of Used Nuclear Fuel Storage and Transportation Technical Gap  

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

Analyses Analyses Review of Used Nuclear Fuel Storage and Transportation Technical Gap Analyses The U.S. Department of Energy Office of Nuclear Energy (DOE-NE), Office of Fuel Cycle Technology, has established the Used Fuel Disposition Campaign (UFDC) to conduct the research and development activities related to storage, transportation, and disposal of used nuclear fuel and high-level radioactive waste. The mission of the UFDC is to identify alternatives and conduct scientific research and technology development to enable storage, transportation, and disposal of used nuclear fuel (UNF) and wastes generated by existing and future nuclear fuel cycles. The Storage and Transportation activities within the UFDC are being developed to address issues regarding the extended storage of UNF and its subsequent

306

Temperature dependence of the gaps of high-temperature superconductors in the Fermi-arc region  

Science Journals Connector (OSTI)

It is shown how in a high-temperature superconductor, the length of the Fermi arc can be obtained from the doping dependence of the pseudogap and the superconducting gap. In the momentum region spanned by the Fermi arc, the pseudogap temperature dependence follows that of the superconducting gap. The close interconnection of the two gaps suggests that they are both an essential part of the high-temperature superconductivity.

S. Hüfner and F. Müller

2008-07-23T23:59:59.000Z

307

A Survey of Gaps, Obstacles, and Technical Challenges for Hypersonic Applications.  

E-Print Network [OSTI]

?? The object of this study is to canvas the literature for the purpose of identifying and compiling a list of Gaps, Obstacles, and Technological… (more)

Barber, Timothy Andrew

2012-01-01T23:59:59.000Z

308

When is a Gap Function Good for Error Bounds? 1 Introduction and ...  

E-Print Network [OSTI]

the gap function and its Fukushima type regularization for GVI and WGVI. ...... straight forward way and in fact in a more simpler fashion than that of [18] whose

2012-07-11T23:59:59.000Z

309

A database for the study of marine mammal behavior: Gap analysis, data standardization, and future directions  

E-Print Network [OSTI]

Gap Analysis, Data Standardization, and Future Directionsdata, and 3) lack of standardization in data re- porting. Awas the lack of standardization and/or presentation of

Shaffer, S A; Costa, Daniel P

2006-01-01T23:59:59.000Z

310

E-Print Network 3.0 - artificial canopy gaps Sample Search Results  

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

canopy gap (which may... -scope assesses the relative size of the largest ... Source: Forest Research Agency of the UK Forestry Commission Collection: Renewable Energy 26...

311

Fact #850: December 8, 2014 Automatic Transmissions have closed the Fuel Economy Gap with Manual Transmissions  

Broader source: Energy.gov [DOE]

Historically, manual transmissions have delivered better fuel economy than automatic transmissions. However, improvements in the efficiency of automatic transmissions have closed that gap in recent...

312

Three-photon-absorption spectroscopy in an indirect-gap material: CdI2  

Science Journals Connector (OSTI)

The three-photon absorption (3PA) spectrum of an indirect-gap material (CdI2) has been measured at 10 K by monitoring the resulting self-trapped-exciton emission. The contribution of excitonic transitions has been evidenced for excitation energies near the indirect gap, while the contribution of allowed and forbidden indirect transitions has been shown for excitation energies far from the gap. The spectral behavior of the 3PA coefficient has been described by parametric formulas, which are analogous to the ones successfully applied for 3PA in direct-gap materials.

M. Lepore; R. Tommasi; I. M. Catalano

1993-03-15T23:59:59.000Z

313

Minimum unit for the fractional statistics of anyons and its application  

SciTech Connect (OSTI)

Although Han et al.[Phys. Rev. Lett. 98, 150404 (2007)] proposed a quantum circuit with six qubits to demonstrate the basic braiding statistics of anyons, we have found that a four-qubit system is enough for realizing such a process. We call it the minimum unit for the fractional statistics of anyons. With some special order, the minimum unit can be used to construct two kinds of fractional charge excitation n/(n+1)[or (n+1)/n] and (n{sup 2}-kn+6n+2)/(n{sup 2}-kn+5n+4)[or (n{sup 2}-kn+2n+k+1)/3(n{sup 2}-kn+5n+4)], where n,k are positive integers and k{<=}n. This minimum unit can be realized by a photonic quantum simulator or by electrons in an optical lattice or quantum dot array. Its use will have some advantages in metrology.

Xi Xiaoqiang [School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710061 (China); School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430 (United States); Hu Mingliang [School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710061 (China)

2010-08-15T23:59:59.000Z

314

On the origin of the low temperatures resistivity minimum in Cr thin films  

SciTech Connect (OSTI)

We present measurements of the electrical resistivity and Hall coefficient, ? and R{sub H}, in Cr films of different thicknesses grown on MgO (100) substrates, as a function of temperature T and applied magnetic field H. The results show a low temperature minimum in ?(T), which is thickness dependent. From 40?K to 2?K, the Hall coefficient is a monotonous increasing function as T is reduced with no particular signature at the temperature T{sub min} where the minimum develops. We explain the resistivity minimum assuming an imperfect nesting of the Fermi surface leading to small electron and hole pockets. We introduce a phenomenological model which supports this simple physical picture.

Osquiguil, E.; Tosi, L.; Kaul, E. E.; Balseiro, C. A. [Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, 8400 Bariloche (Argentina)

2013-12-28T23:59:59.000Z

315

Minimum variance control of organic Rankine cycle based waste heat recovery  

Science Journals Connector (OSTI)

Abstract In this paper, an online self-tuning generalized minimum variance (GMV) controller is proposed for a 100 KW waste heat recovery system with organic Rankine cycle (ORC). The ORC process model is formulated by the controlled autoregressive moving average (CARMA) model whose parameters are identified using the recursive least squares (RLS) algorithm with forgetting factor. The generalized minimum variance algorithm is applied to regulate ORC based waste heat recovery system. The contributions of this work are twofold: (1) the proposed control strategy is formulated under the data-driven framework, which does not need the precise mathematic model; (2) this proposed method is applied to handle tracking set-point variations and process disturbances by improved minimum objective GMV function. The performance of GMV controller is compared with the PID controller. The simulation results show that the proposed strategy can achieve satisfactory set-point tracking and disturbance rejection performance.

Guolian Hou; Shanshan Bi; Mingming Lin; Jianhua Zhang; Jinliang Xu

2014-01-01T23:59:59.000Z

316

Theoretical support for a Ramsauer-Townsend minimum in electron-CF4 scattering  

Science Journals Connector (OSTI)

We describe complex Kohn calculations for elastic e--CF4 scattering at incident electron energies of 0.04–20 eV. An accurate representation of the electronic correlation effects involving target polarization is critical in the explicit demonstration of a Ramsauer-Townsend minimum. We use a set of polarized virtual orbitals to form a compact representation of closed channels in the trial scattering function to include these effects. These are the first ab initio calculations to verify the Ramsauer-Townsend minimum in CF4. We find excellent comparison between the complex Kohn results and measured differential and integral cross sections.

W. A. Isaacs; C. W. McCurdy; T. N. Rescigno

1998-07-01T23:59:59.000Z

317

Genetic-Algorithm Discovery of a Direct-Gap and Optically Allowed Superstructure from Indirect-Gap Si and Ge Semiconductors  

SciTech Connect (OSTI)

Combining two indirect-gap materials - with different electronic and optical gaps - to create a direct gap material represents an ongoing theoretical challenge with potentially rewarding practical implications, such as optoelectronics integration on a single wafer. We provide an unexpected solution to this classic problem, by spatially melding two indirect-gap materials (Si and Ge) into one strongly dipole-allowed direct-gap material. We leverage a combination of genetic algorithms with a pseudopotential Hamiltonian to search through the astronomic number of variants of Si{sub n}/Ge{sub m}/.../Si{sub p}/Ge{sub q} superstructures grown on (001) Si{sub 1-x}Ge{sub x}. The search reveals a robust configurational motif - SiGe{sub 2}Si{sub 2}Ge{sub 2}SiGe{sub n} on (001) Si{sub x}Ge{sub 1-x} substrate (x {le} 0.4) presenting a direct and dipole-allowed gap resulting from an enhanced {Gamma}-X coupling at the band edges.

d'Avezac, M.; Luo, J. W.; Chanier, T.; Zunger, A.

2012-01-13T23:59:59.000Z

318

NETL: News Release - Data Acquisition Processor Fills Gap for Extreme  

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

9, 2010 9, 2010 Data Acquisition Processor Fills Gap for Extreme Down-hole Conditions Honeywell Develops Unique Reprogrammable High Temperature Device Morgantown, WV - Honeywell International, Inc. has developed a Reconfigurable Processor for Data Acquisition (RPDA) - a reprogrammable, multi-functional device that can operate at temperatures up to 250oC (482oF). The system is housed in a rugged package suitable for deep down-hole oil and natural gas logging and measurement-while-drilling (MWD) operations, and permanent wellbore installation applications. The project was funded through a cooperative agreement with the National Energy Technology Laboratory (NETL) under the Office of Fossil Energy's Oil and Natural Gas Program. Deep wells are generally defined as having a true vertical depth (TVD) greater than 15,000 feet, while ultra-deep wells are deeper than 25,000 feet TVD. Potential recoverable natural gas and oil resources from deep formations are significant, and deep wells tend to produce at much higher daily rates than conventional shallower wells.

319

Analyzing the Performance of a Multiobjective GA-P Algorithm for Learning Fuzzy Queries in  

E-Print Network [OSTI]

Analyzing the Performance of a Multiobjective GA-P Algorithm for Learning Fuzzy Queries in a Machine Learning Environment Oscar Cord´on1 , Enrique Herrera-Viedma1 , Mar´ia Luque1 , F´elix de Moya2- tionary algorithms (EAs) [1], such as genetic algorithm-programming (GA-P) [11] or simulated annealing

Fernandez, Thomas

320

InAlAs EPITAXIAL GROWTH FOR WIDE BAND GAP SOLAR CELLS Marina S. Leite  

E-Print Network [OSTI]

InAlAs EPITAXIAL GROWTH FOR WIDE BAND GAP SOLAR CELLS Marina S. Leite 1 , Robyn L. Woo 2 , William vapor phase epitaxy and wide band gap solar cell fabrication. X-ray diffraction and transmissionAlAs solar cells lattice-matched to InP were grown and electrically characterized under AM 1.5 global 1-sun

Atwater, Harry

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Light trapping design for low band-gap polymer solar cells  

E-Print Network [OSTI]

Light trapping design for low band-gap polymer solar cells Stephen Foster1,* and Sajeev John1,2 1 demonstrate numerically a 2-D nanostructured design for light trapping in a low band-gap polymer solar cell, "Light harvesting improvement of organic solar cells with self- enhanced active layer designs," Opt

John, Sajeev

322

Energy Band-Gap Engineering of Graphene Nanoribbons Melinda Y. Han,1  

E-Print Network [OSTI]

, New York, New York 10027, USA 2 Department of Physics, Columbia University, New York, New York 10027Energy Band-Gap Engineering of Graphene Nanoribbons Melinda Y. Han,1 Barbaros O¨ zyilmaz,2 Yuanbo an energy gap near the charge neutrality point. Individual graphene layers are contacted with metal

Kim, Philip

323

Collapse of integer Hall gaps in a double-quantum-well system  

Science Journals Connector (OSTI)

For coupled double-quantum-well systems in which tunneling is important, the symmetric to antisymmetric energy gap leads to a quantum Hall effect. In this Letter we show that interaction effects in strong magnetic fields can destroy this gap, and present a theory which predicts the occurrence or nonoccurrence of a quantum Hall effect.

A. H. MacDonald; P. M. Platzman; G. S. Boebinger

1990-08-06T23:59:59.000Z

324

MODELING PLANT COMPETITION WITH THE GAPS OBJECT-ORIENTED DYNAMIC SIMULATION MODEL  

E-Print Network [OSTI]

MODELING PLANT COMPETITION WITH THE GAPS OBJECT-ORIENTED DYNAMIC SIMULATION MODEL David G. Rossiter of Agronomy, Inc. #12;MODELING PLANT COMPETITION WITH THE GAPS OBJECT-ORIENTED DYNAMIC SIMULATION MODEL Abstract Modeling inter-species competition is a natural application for dynamic simulation models

Rossiter, D G "David"

325

Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its  

Open Energy Info (EERE)

Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Implications for the Land Transport Sector Jump to: navigation, search Tool Summary Name: Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Implications for the Land Transport Sector Agency/Company /Organization: Bridging the Gap Sector: Energy, Land Focus Area: Transportation Topics: Policies/deployment programs Resource Type: Publications Website: www.transport2012.org/bridging/ressources/documents/1/556,Copenhagen_r References: Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Implications for the Land Transport Sector[1] "This paper provides a brief overview of the outcome of the UN conference and a discussion of the implications of decisions made there in respect to

326

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a A New Gap-Opening Mechanism in a Triple-Band Metal A New Gap-Opening Mechanism in a Triple-Band Metal Print Wednesday, 23 February 2005 00:00 A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd

327

Vacuum gaps with small tunnel currents at large electric field and its  

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

Vacuum gaps with small tunnel currents at large electric field and its Vacuum gaps with small tunnel currents at large electric field and its potential applications for energy storage, charge storage and power supplies. Friday, May 27, 2011 - 4:00pm SSRL Conference Room 137-226 Alfred Hubler, Department of Physics, University of Illinois, Urbana-Champaign We study tunnel currents and electric break down in vacuum gaps experimentally and theoretically. We find that electric field at break down in nano vacuum gaps is 3 order of magnitude larger than in macroscopic capacitors. Pointed electrodes increase the limiting field even further. Eigen states in the gap can help to reduce tunnel currents. We discuss applications of this technology for energy storage, charge storage, and power supplies. Speaker Bio: Professor Alfred Hubler is the director of the Center for

328

Technical Standards, ALOHA-Gap Analysis - May 3, 2004 | Department of  

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

ALOHA-Gap Analysis - May 3, 2004 ALOHA-Gap Analysis - May 3, 2004 Technical Standards, ALOHA-Gap Analysis - May 3, 2004 May 3, 2004 DOE-EH-4.2.1.3-ALOHA-Gap Analysis, Software Quality Assurance Improvement Plan: ALOHA Gap Analysis The Defense Nuclear Facilities Safety Board (DNFSB) issued Recommendation 2002-1 on Quality Assurance for Safety-Related Software in September 2002 (DNFSB 2002). The Recommendation identified a number of quality assurance issues for software used in the Department of Energy (DOE) facilities for analyzing hazards, and designing and operating controls that prevent or mitigate potential accidents. The development and maintenance of a collection, or "toolbox," of high-use, Software Quality Assurance (SQA)-compliant safety analysis codes is one of the major improvement

329

Rapid measurement of minimum miscibility pressure with the rising-bubble apparatus  

SciTech Connect (OSTI)

The minimum miscibility pressure (MMP) for a gas/oil pair can be measured within 1 hour with the rising-bubble apparatus (RBA). Development of miscibility between a gas bubble and an oil can be observed visually. The measurements of the MMP with the RBA compare favorably with those based on slim-tube experiments and predictions from phase-behavior studies.

Christiansen, R.L.; Haines, H.K.

1987-11-01T23:59:59.000Z

330

Power Controlled Minimum Frame Length Scheduling in TDMA Wireless Networks with  

E-Print Network [OSTI]

Power Controlled Minimum Frame Length Scheduling in TDMA Wireless Networks with Sectored Antennas controlled min- imum frame length scheduling for TDMA wireless networks. Given a set of one-hop transmission scheduling and power control was first addressed by Tamer and Ephremides in [1, 2]. Given a set of one

Arabshahi, Payman

331

Comparison of VLF Wave Activity in the Solar Wind During Solar Maximum and Minimum  

E-Print Network [OSTI]

second fast latitude scan (near the solar maximum) with the wave observations during the first fast Experiments (URAP) of Ulysses during its first orbit, which occurred when the solar activity was approachingComparison of VLF Wave Activity in the Solar Wind During Solar Maximum and Minimum: Ulysses

California at Berkeley, University of

332

BME BIOTECHNOLOGY CONCENTRATION F11 MS: 30 total credit hours minimum  

E-Print Network [OSTI]

BME BIOTECHNOLOGY CONCENTRATION ­ F11 MS: 30 total credit hours minimum Students last name begins: Michael Mayer, Ph.D. (mimayer@umich.edu) Biotechnology (one course): BIOMEDE 410 Design and Application of Engineering): At least one of the following: BIOLCHEM 515 Introductory Biochemistry (Biotechnology only)5 (3

Eustice, Ryan

333

BME BIOTECHNOLOGY CONCENTRATION F10 MS: 30 total credit hours minimum  

E-Print Network [OSTI]

BME BIOTECHNOLOGY CONCENTRATION ­ F10 MS: 30 total credit hours minimum Students last name begins: Michael Mayer, Ph.D. (mimayer@umich.edu) Biotechnology (one course): BIOMED E 410 Design and Application (Biotechnology only)5 (3) (I, II) BIOMED E 519 Quantitative Physiology (Tissue Engineering only)6 (4) (I) Other

Eustice, Ryan

334

BME BIOTECHNOLOGY CONCENTRATION F12 MS: 30 total credit hours minimum  

E-Print Network [OSTI]

BME BIOTECHNOLOGY CONCENTRATION ­ F12 MS: 30 total credit hours minimum Advisor: Michael Mayer, Ph.D. (mimayer@umich.edu) Biotechnology (one course): BIOMEDE 410 Design and Application of Biomaterials (3) (l)1 of Engineering): One course from this list: BIOLCHEM 515 Introductory Biochemistry (Biotechnology only)5 (3) (I

Kamat, Vineet R.

335

On the maximum and minimum mass of protoneutron stars in the Brueckner theory  

E-Print Network [OSTI]

We study the structure of protoneutron stars within the finite-temperature Brueckner-Bethe-Goldstone theoretical approach, paying particular attention to the joining with a low-density nuclear equation of state (EOS). We find a slight sensitivity of the minimum value of the protoneutron star mass on the low-density EOS, whereas the maximum mass is hardly affected.

Burgio, G F

2010-01-01T23:59:59.000Z

336

HIGH-LEVEL MULTI-STEP INVERTER OPTIMIZATION, USING A MINIMUM NUMBER OF POWER TRANSISTORS.  

E-Print Network [OSTI]

HIGH-LEVEL MULTI-STEP INVERTER OPTIMIZATION, USING A MINIMUM NUMBER OF POWER TRANSISTORS. Juan 56-41-246-999 e-mail lmoran@renoir.die.udec.cl ABSTRACT Multilevel inverters with a large number-5]. Multi-level inverters can operate not only with PWM techniques but also with amplitude modulation (AM

Catholic University of Chile (Universidad Católica de Chile)

337

Exploiting Schedule Slacks for RateOptimal PowerMinimum Software Pipelining #  

E-Print Network [OSTI]

­engineered compiler on Wattch power simulator, we observe that our approach can reduce dynamic energy consumptionExploiting Schedule Slacks for Rate­Optimal Power­Minimum Software Pipelining # Hongbo Yang + R systems de­ mand new compiler techniques geared toward both high performance and low power. Software

Gao, Guang R.

338

A MEASUREMENT OF THE PROTON SPECTRUM AT 1 AU NEAR SOLAR MINIMUM WITH THE CAPRICE EXPERIMENT  

E-Print Network [OSTI]

OG 5.2.1 A MEASUREMENT OF THE PROTON SPECTRUM AT 1 AU NEAR SOLAR MINIMUM WITH THE CAPRICELaboratori Nazionali INFN, Frascati, Italy 5NASA/Goddard Space Flight Center, Greenbelt, USA 6New Mexico, Italy ABSTRACT We report on a preliminary result of the absolute proton spectrum in the energy range 0

Morselli, Aldo

339

Minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems  

SciTech Connect (OSTI)

A parametric calculational analysis has been performed in order to estimate the minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems. The analysis was performed using a version of the SCALE-4.0 code system and the 27-group ENDF/B-IV cross-section library. Water-moderated uranyl fluoride (UO[sub 2]F[sub 2] and H[sub 2]O) and hydrofluoric-acid-moderated uranium hexaflouride (UF[sub 6] and HF) systems were considered in the analysis over enrichments of 1.4 to 5 wt % [sup 235]U. Estimates of the minimum critical volume, minimum critical mass of uranium, and the minimum mass of moderator required for criticality are presented. There was significant disagreement between the values generated in this study when compared with a similar undocumented study performed in 1983 using ANISN and the Knight-modified Hansen-Roach cross sections. An investigation into the cause of the disagreement was made, and the results are presented.

Jordan, W.C.; Turner, J.C.

1992-12-01T23:59:59.000Z

340

Minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems  

SciTech Connect (OSTI)

A parametric calculational analysis has been performed in order to estimate the minimum mass of moderator required for criticality of homogeneous low-enriched uranium systems. The analysis was performed using a version of the SCALE-4.0 code system and the 27-group ENDF/B-IV cross-section library. Water-moderated uranyl fluoride (UO{sub 2}F{sub 2} and H{sub 2}O) and hydrofluoric-acid-moderated uranium hexaflouride (UF{sub 6} and HF) systems were considered in the analysis over enrichments of 1.4 to 5 wt % {sup 235}U. Estimates of the minimum critical volume, minimum critical mass of uranium, and the minimum mass of moderator required for criticality are presented. There was significant disagreement between the values generated in this study when compared with a similar undocumented study performed in 1983 using ANISN and the Knight-modified Hansen-Roach cross sections. An investigation into the cause of the disagreement was made, and the results are presented.

Jordan, W.C.; Turner, J.C.

1992-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Minimum-Cost Tolerance Allocation ADCATS Report No. 99-5  

E-Print Network [OSTI]

Minimum-Cost Tolerance Allocation ADCATS Report No. 99-5 Kenneth W. Chase Department of Mechanical-all cost of production, while meeting target levels for quality. Using allocation tools, a designer may re and loosening tolerances on costly processes, for a net reduction in cost. Several algorithms are described

342

Integrated Column Designs for Minimum Energy and Entropy Requirements in Multicomponent Distillation  

E-Print Network [OSTI]

Distillation Ivar J. Halvorsen1 and Sigurd Skogestad Norwegian University of Science and Technology, Department at the Topical conference on Separations Technology, Session 23 - Distillation Modeling and Processes II. 2001 Column Designs for Minimum Energy and Entropy Requirements in Multicomponent Distillation Ivar J

Skogestad, Sigurd

343

Buffer Sizing for Minimum Energy-Delay Product by Using an Approximating Polynomial  

E-Print Network [OSTI]

Buffer Sizing for Minimum Energy-Delay Product by Using an Approximating Polynomial Chang Woo Kang to derive sizing rules for buffered chains, which optimize the overall energy-delay product. Categories result in a poor solution in terms of the energy-delay product. The focus of this work is on multi

Pedram, Massoud

344

A Graphical Tool to Visualize Predicted Minimum Delay Flights Tanujit Dey, David Phillips, and Patrick Steele  

E-Print Network [OSTI]

destinations from the airports Bal- timore Washington International (BWI) and Dulles International (IAD the predictions of both the minimum-delay and quickest routes for a given origin and destination airport using an airport with the color indicating average delay experienced, and the diameter of each circle representing

Phillips, David

345

Asymptotic behavior of the minimum mean squared error threshold for noisy  

E-Print Network [OSTI]

Ã?cients of piecewise smooth signals Maarten Jansen Adhemar Bultheel Report TW 294, October 1999 n Katholieke smooth signals Maarten Jansen Adhemar Bultheel Report TW 294, October 1999 Department of Computer Science Jansen, Adhemar Bultheel October 4, 1999 Abstract This paper investigates the minimum risk threshold

Jansen, Maarten

346

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO. 2, FEBRUARY 2009 985 Minimum Energy Coding in  

E-Print Network [OSTI]

, which minimizes the total energy consumption by controlling the radio power, is developed. Numerical Networks (WSNs). Energy consumption and reliability are analyzed for two coding schemes: Minimum Energy ME with respect to energy consumption and bit error rate. It is concluded that MME is more energy

Johansson, Karl Henrik

347

A study on the locality behavior of minimum spanning tree algorithms  

Science Journals Connector (OSTI)

Locality behavior study is crucial for achieving good performance for irregular problems. Graph algorithms with large, sparse inputs, for example, oftentimes achieve only a tiny fraction of the potential peak performance on current architectures. Compared ... Keywords: graph algorithm, memory locality, minimum spanning tree

Guojing Cong; Simone Sbaraglia

2006-12-01T23:59:59.000Z

348

Achieving MinimumCost Multicast: A Decentralized Approach Based on Network Coding  

E-Print Network [OSTI]

, a monetary or energy cost must be paid for each link usage) and the other that applies for strictly convex­to­point links, and consider the problem of minimum­energy multicast in wireless networks as well as the case generally means finding the shortest tree connecting a set of points in a directed graph; in other words

Médard, Muriel

349

MinimumEnergy Mobile Wireless Networks Revisited Li Li Joseph Y. Halpern  

E-Print Network [OSTI]

at maximum power. Transmitting at maximum power requires a great deal of energy. To minimize energy usage, we for a graph to have this minimum­energy property. We use this characterization to construct a protocol called, SMECN has lower link main­ tenance costs than MECN and can achieve a significant saving in energy usage

Li, Li Erran

350

PHYSICAL REVIEW E 85, 026115 (2012) Optimizing controllability of complex networks by minimum structural perturbations  

E-Print Network [OSTI]

, Beijing 100875, China 2 School of Electrical, Computer, and Energy Engineering, Arizona State University the practical usage of our approach, its implementation elucidates, interestingly, the intricate relationship dynamics, which is based on the classical control and graph theories [9­11]. The basic goal of the minimum

Lai, Ying-Cheng

351

The Potato Radius: a Lower Minimum Size for Dwarf Planets Charles H. Lineweaver & Marc Norman  

E-Print Network [OSTI]

The Potato Radius: a Lower Minimum Size for Dwarf Planets Charles H. Lineweaver & Marc Norman a rounded potato shape to a sphere. We derive this potato-to-sphere transition radius -- or "potato radius" -- from first principles. Using the empirical potato radii of asteroids and icy moons, we derive

Lineweaver, Charles H.

352

Constructing Minimum-Energy Broadcast Trees In Wireless Ad Hoc Networks  

E-Print Network [OSTI]

networks are not available or not economical to build [3]. These span the commercial, public as well it is not economical to build a fixed in- frastructure for a short temporary usage. In tactical battle- fieldConstructing Minimum-Energy Broadcast Trees In Wireless Ad Hoc Networks Weifa Liang Department

Liang, Weifa

353

A minimum-reaction-flux solution to master-equation models of protein folding  

E-Print Network [OSTI]

A minimum-reaction-flux solution to master-equation models of protein folding Huan-Xiang Zhoua; published online 20 May 2008 Master equations are widely used for modeling protein folding. Here- ceptual and quantitative models for protein folding.1­15 In such models, the conformational space

Weston, Ken

354

Giant Hydrogen Sulfide Plume in the Oxygen Minimum Zone off Peru Supports Chemolithoautotrophy  

E-Print Network [OSTI]

Giant Hydrogen Sulfide Plume in the Oxygen Minimum Zone off Peru Supports Chemolithoautotrophy sporadically accumulate hydrogen sulfide (H2S), which is toxic to most multicellular organisms and has been feedback loop that could fuel further sulfate reduction and potentially stabilize the sulfidic OMZ waters

Boyer, Edmond

355

String method in collective variables: Minimum free energy paths and isocommittor surfaces  

E-Print Network [OSTI]

York University, New York, New York 10012 Giovanni Ciccottid INFM and Dipartimento di Fisica in the free energy. Provided that the number of collective variables is large enough, the new techniqueString method in collective variables: Minimum free energy paths and isocommittor surfaces Luca

Van Den Eijnden, Eric

356

Requirements for the MINOR in Environmental Science Five courses required. Total credits = minimum of 15  

E-Print Network [OSTI]

Requirements for the MINOR in Environmental Science Five courses required. Total credits = minimum to Environmental Science OR NRC 100 Environment and Society OR GEO-SCI 100 Global Environmental Change Select two (2) of following four courses ENVIRSCI 213 Introduction to Environmental Policy ENVIRSCI 214

Massachusetts at Amherst, University of

357

Autopilot for a Nonlinear Non-Minimum Phase Tail-Controlled Missile  

E-Print Network [OSTI]

Autopilot for a Nonlinear Non-Minimum Phase Tail-Controlled Missile Anshu Narang controlled missiles: 1. Exploiting the full physical capabilities of the missile system Fulfilling demanding aerodynamics is expensive and inaccurate Only certain states can be measured #12;3 Acceleration Control

Valasek, John

358

Statistics of counter-streaming solar wind suprathermal electrons at solar minimum: STEREO observations  

E-Print Network [OSTI]

1 Statistics of counter-streaming solar wind suprathermal electrons at solar minimum: STEREO, University of New Brunswick, Fredericton, Canada 6 Space Sciences Laboratory, University of California University of New Hampshire, Durham, USA Abstract. Previous work has shown that solar wind suprathermal

Paris-Sud XI, Université de

359

BME BIOMEDICAL IMAGING CONCENTRATION F12 MS: 30 total credit hours minimum  

E-Print Network [OSTI]

BME BIOMEDICAL IMAGING CONCENTRATION ­ F12 MS: 30 total credit hours minimum Advisor: Luis Hernandez-Garcia, Ph.D. (hernan@umich.edu) Biomedical Imaging: BIOMEDE 5161 Medical Imaging Systems (3) (I)2 General: BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550 Ethics and Enterprise (1) (I

Kamat, Vineet R.

360

BME BIOMEDICAL IMAGING CONCENTRATION F11 MS: 30 total credit hours minimum  

E-Print Network [OSTI]

BME BIOMEDICAL IMAGING CONCENTRATION ­ F11 MS: 30 total credit hours minimum Advisor: Luis Hernandez-Garcia, Ph.D. (hernan@umich.edu) Biomedical Imaging: BIOMEDE 5161 Medical Imaging Systems (3) (I)2 General: BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550 Ethics and Enterprise (1) (I

Eustice, Ryan

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Thermal-hydraulic and structural considerations on the gap variation between fuel bundle and hexcan  

SciTech Connect (OSTI)

One of the safety concerns in reactor operation is the temperature of the fuel elements, which are contained in a hexagonal duct, referred to as the hexcan. There are gaps between the fuel bundle and the hexcan, and the gaps somewhat affect thermal-hydraulic behavior of the fuel element. This paper investigates the impact of gap variations on the thermal-hydraulic responses of the fuel element as well as the possibility of fuel bundle and hexcan interaction. The gap variation between hex duct and fuel bundle is caused by differential thermal expansion, creep strain, and irradiation-induced swelling of fuel-cladding and hex duct, and it is a function of fuel burnup. The effects of gap variations on the thermal-hydraulic responses of typical driver subassemblies in the Experimental Breeder Reactor (EBR-II) are investigated. A structural analysis was performed to predict the in-reactor deformation behavior of fuel bundle and hex duct, and followed by a thermal-hydraulic analysis to determine the flow and temperature response due to gap changes. The effects of geometry variation on the thermal-hydraulic response are discussed. The study indicates that the effect of gap variation should not be ignored for subassembly designs.

Chang, L.K.; Lee, M.J.; Ku, J.Y.

1992-05-01T23:59:59.000Z

362

Thermal-hydraulic and structural considerations on the gap variation between fuel bundle and hexcan  

SciTech Connect (OSTI)

One of the safety concerns in reactor operation is the temperature of the fuel elements, which are contained in a hexagonal duct, referred to as the hexcan. There are gaps between the fuel bundle and the hexcan, and the gaps somewhat affect thermal-hydraulic behavior of the fuel element. This paper investigates the impact of gap variations on the thermal-hydraulic responses of the fuel element as well as the possibility of fuel bundle and hexcan interaction. The gap variation between hex duct and fuel bundle is caused by differential thermal expansion, creep strain, and irradiation-induced swelling of fuel-cladding and hex duct, and it is a function of fuel burnup. The effects of gap variations on the thermal-hydraulic responses of typical driver subassemblies in the Experimental Breeder Reactor (EBR-II) are investigated. A structural analysis was performed to predict the in-reactor deformation behavior of fuel bundle and hex duct, and followed by a thermal-hydraulic analysis to determine the flow and temperature response due to gap changes. The effects of geometry variation on the thermal-hydraulic response are discussed. The study indicates that the effect of gap variation should not be ignored for subassembly designs.

Chang, L.K.; Lee, M.J.; Ku, J.Y.

1992-01-01T23:59:59.000Z

363

AC loss characteristics of superconducting power transmission cables: gap effect and  

Science Journals Connector (OSTI)

Four groups of superconducting power transmission cables composed of coated conductors with 4.0 mm width and 2 µm superconductor thickness have been designed, including mono-layer, two-layer, four-layer and six-layer cables. In each group, three types of cables have been constructed with gaps of different size between adjacent coated conductors, which are classified into small gap, medium gap and large gap. Moreover, different lateral critical current density (Jc) distributions, specifically a uniform distribution and a trapezoidal distribution with a sloping shoulder, have been assumed while calculating the AC losses of these cables numerically by using a one-dimensional FEM model. Numerical results show that AC losses in mono-layer cables are significantly influenced by gaps between coated conductors as well as lateral Jc distribution, while cables with many layers are hardly affected by them. This proves that small gaps between coated conductors are not absolutely essential to reduce AC losses in multi-layer cables, and a sloping shoulder of the Jc distribution is more allowable in multi-layer cables than in mono-layer cables. The AC loss distributions among layers in six-layer cables are presented and the reasons for different influences of the gap as well as the lateral Jc distribution in mono-layer and multi-layer cables are discussed.

Quan Li; Naoyuki Amemiya; Katsutoku Takeuchi; Taketsune Nakamura; Noboru Fujiwara

2010-01-01T23:59:59.000Z

364

Thin plate gap bridging study for Nd:YAG pulsed laser lap welds.  

SciTech Connect (OSTI)

In an on going study of gap bridging for thin plate Nd:YAG laser lap welds, empirical data, high speed imaging, and computer modeling were utilized to better understand surface physics attributed to the formation and solidification of a weld pool. Experimental data indicates better gap bridging can be achieved through optimized laser parameters such as pulse length, duration, and energy. Long pulse durations at low energies generating low peak powers were found to create the highest percent of gap bridging ability. At constant peak power, gap-bridging ability was further improved by using a smaller spot diameter resulting in higher irradiances. Hence, welding in focus is preferable for bridging gaps. Gas shielding was also found to greatly impact gap-bridging ability. Gapped lap welds that could not be bridged with UHP Argon gas shielding, were easily bridged when left unshielded and exposed to only air. Incident weld angle and joint offset were also investigated for their ability to improve gap bridging. Optical filters and brightlight surface illumination enabled high-speed imaging to capture the fluid dynamics of a forming and solidifying weld pool. The effects of various laser parameters and the weld pool's interaction with the laser beam could also be observed utilizing the high-speed imaging. The work described is used to develop and validate a computer model with improved weld pool physics. Finite element models have been used to derive insight into the physics of gap bridging. The dynamics of the fluid motion within the weld pool in conjunction with the free surface physics have been the primary focus of the modeling efforts. Surface tension has been found to be a more significant factor in determining final weld pool shape than expected.

Roach, Robert Allen; Fuerschbach, Phillip William; Bernal, John E.; Norris, Jerome T.

2006-01-01T23:59:59.000Z

365

Gap formation, microsite variation and the conifer seedling occurrence in a subalpine old-growth forest, central Japan  

Science Journals Connector (OSTI)

To evaluate the effects of canopy gaps and forest floor microsites (soil, fallen logs, root ... buttresses and stumps) on regeneration of subalpine forests, the gap regeneration and seedling occurrence of conifers

Yoshiko Narukawa; Shin-Ichi Yamamoto

2001-12-01T23:59:59.000Z

366

Defect assistant band alignment transition from staggered to broken gap in mixed As/Sb tunnel field effect transistor heterostructure  

E-Print Network [OSTI]

.3As heterointerface. As a result, the band alignment was converted from staggered gap to broken gap-to-source voltage, VGS. As the SS of a MOSFET is governed by the transport mechanism of thermionic-emission over

Yener, Aylin

367

Measurements of CsI band-gap closure to 93 GPa  

Science Journals Connector (OSTI)

Infrared-absorption measurements to a peak pressure of 93 GPa document the pressure-induced closure of the band gap of CsI to about 4450 cm-1 (0.55 eV). In accord with previous spectroscopic measurements to 60 GPa, our data show that the band gap of CsI decreases continuously with pressure, and metallization (complete closure of the gap) is expected to occur above 100 GPa. A recent claim that CsI becomes metallic at 65±5 GPa is therefore spurious.

Quentin Williams and Raymond Jeanloz

1986-01-13T23:59:59.000Z

368

On the entropy devil's staircase in a family of gap-tent maps  

E-Print Network [OSTI]

We analyze dynamical properties of a "gap-tent map" - a family of 1D maps with a symmetric gap, which mimics the presence of noise in physical realizations of chaotic systems. We demonstrate that the dependence of the topological entropy on the size of the gap has a structure of the devil's staircase. By integrating over a fractal measure, we obtain analytical, piece-wise differentiable approximations of this dependence. Applying concepts of the kneading theory we find the position and the values of the entropy for all leading entropy plateaus. Similar properties hold also for the dependence of the fractal dimension of the invariant set and the escape rate.

Karol Zyczkowski; Erik M. Bollt

1998-07-07T23:59:59.000Z

369

Theorem on the existence of a nonzero energy gap in adiabatic quantum computation  

E-Print Network [OSTI]

Adiabatic quantum computation, based on the adiabatic theorem, is a promising alternative to conventional quantum computation. The validity of an adiabatic algorithm depends on the existence of a nonzero energy gap between the ground and excited states. However, it is difficult to ascertain the exact value of the energy gap. In this paper, we put forward a theorem on the existence of nonzero energy gap for the Hamiltonians used in adiabatic quantum computation. It can help to effectively identify a large class of the Hamiltonians without energy-level crossing between the ground and excited states.

Da-Jian Zhang; Xiao-Dong Yu; D. M. Tong

2014-10-14T23:59:59.000Z

370

Fact #837: September 8, 2014 Gap between Net Imports and Total Imports of Petroleum is Widening – Dataset  

Broader source: Energy.gov [DOE]

Excel file with dataset for Fact #837: Gap between Net Imports and Total Imports of Petroleum is Widening

371

The microscopic pairing gap in a slab of nuclear matter for the Argonne v18 NN-potential  

Science Journals Connector (OSTI)

Ab initio gap equation for 1S0 pairing in a nuclear slab is solved for the Argonne v18 NN-potential. The gap function is compared in detail with the one found previously for the separable form of the Paris potential. The difference between the two gaps turned out to be about 10%. Dependence of the gap on the chemical potential ? is analyzed.

S.S. Pankratov; M. Baldo; U. Lombardo; E.E. Saperstein; M.V. Zverev

2008-01-01T23:59:59.000Z

372

The microscopic pairing gap in a slab of nuclear matter for the Argonne v18 NN-potential  

E-Print Network [OSTI]

Ab initio gap equation for ^1S_0 pairing in a nuclear slab is solved for the Argonne v18 NN-potential. The gap function is compared in detail with the one found previously for the separable form of the Paris potential. The difference between the two gaps turned out to be about 10%. Dependence of the gap on the chemical potential mu is analyzed.

S. S. Pankratov; M. Baldo; U. Lombardo; E. E. Saperstein; M. V. Zverev; ;

2008-01-12T23:59:59.000Z

373

hal-00172027,version1-13Sep2007 On the application of the Critical Minimum Energy Subspace method to disordered  

E-Print Network [OSTI]

hal-00172027,version1-13Sep2007 On the application of the Critical Minimum Energy Subspace method Aires, Argentina (Dated: September 13, 2007) We discuss the recent application to strongly disordered systems of the Critical Minimum Energy Subspace (CMES) method, used to limit the energy subspace

Paris-Sud XI, Université de

374

Solar signals in the minimum extreme temperature records in the southern region of the Gulf of Mexico  

Science Journals Connector (OSTI)

Minimum extreme temperature series from several meteorological stations of the Gulf of Mexico are spectrally analyzed using the Maximum Entropy Method. We obtained significant periodicities similar to those found in meteorological and solar activity phenomena. This indicates that probably the solar activity signals are present in the minimum extreme temperature records of this Mexican region.

D. Maravilla; B. Mendoza; E. Jáuregui

2008-01-01T23:59:59.000Z

375

Design Considerations for an On-Demand Minimum Energy Routing Protocol for a Wireless Ad Hoc Network  

E-Print Network [OSTI]

at Boulder Boulder, CO-80309 Abstract--A minimum energy routing protocol reduces the energy con- sumption the energy consumption of a wireless ad hoc network. Past research has focused on energy savings schemes1 Design Considerations for an On-Demand Minimum Energy Routing Protocol for a Wireless Ad Hoc

Brown, Timothy X.

376

Device Sizing for Minimum Energy Operation in Subthreshold Circuits Benton H. Calhoun, Alice Wang, and Anantha Chandrakasan  

E-Print Network [OSTI]

for Minimum Energy Sizing influences the energy consumption of a circuit in two primary ways. First, sizing have low energy as the primary concern instead of performance. Minimum energy operation for low directly affects energy consumption by changing switched capacitance and leakage current. Sec- ondly

Calhoun, Benton H.

377

Communication: Minimum in the thermal conductivity of supercooled water: A computer simulation study  

SciTech Connect (OSTI)

We report the results of a computer simulation study of the thermodynamic properties and the thermal conductivity of supercooled water as a function of pressure and temperature using the TIP4P-2005 water model. The thermodynamic properties can be represented by a two-structure equation of state consistent with the presence of a liquid-liquid critical point in the supercooled region. Our simulations confirm the presence of a minimum in the thermal conductivity, not only at atmospheric pressure, as previously found for the TIP5P water model, but also at elevated pressures. This anomalous behavior of the thermal conductivity of supercooled water appears to be related to the maximum of the isothermal compressibility or the minimum of the speed of sound. However, the magnitudes of the simulated thermal conductivities are sensitive to the water model adopted and appear to be significantly larger than the experimental thermal conductivities of real water at low temperatures.

Bresme, F., E-mail: f.bresme@imperial.ac.uk [Chemical Physics Section, Department of Chemistry, Imperial College, London SW7 2AZ, United Kingdom and Department of Chemistry, Norwegian University of Science and Technology, Trondheim 7491 (Norway); Biddle, J. W.; Sengers, J. V.; Anisimov, M. A. [Institute for Physical Science and Technology, and Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742 (United States)] [Institute for Physical Science and Technology, and Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742 (United States)

2014-04-28T23:59:59.000Z

378

Global Minimum Determination of the Born-Oppenheimer Surface within Density Functional Theory  

SciTech Connect (OSTI)

We present a novel method, which we refer to as the dual minima hopping method, that allows us to find the global minimum of the potential energy surface (PES) within density functional theory for systems where a fast but less accurate calculation of the PES is possible. This method can rapidly find the ground state configuration of clusters and other complex systems with present day computer power by performing a systematic search. We apply the new method to silicon clusters. Even though these systems have already been extensively studied by other methods, we find new global minimum candidates for Si{sub 16} and Si{sub 19}, as well as new low-lying isomers for Si{sub 16}, Si{sub 17}, and Si{sub 18}.

Goedecker, Stefan; Hellmann, Waldemar; Lenosky, Thomas [Institut fuer Physik, Universitaet Basel, Klingelbergstrasse 82, 4056 Basel (Switzerland); Physics Department, Ohio State University, 1040 Physics Research Building, 191 West Woodruff Avenue, Columbus, Ohio 43210-1117 (United States)

2005-07-29T23:59:59.000Z

379

Macroalgal diversity along the Baltic Sea salinity gradient challenges Remane’s species-minimum concept  

Science Journals Connector (OSTI)

Remane’s species-minimum concept, which states that the lowest number of taxa occurs at the horohalinicum (5–8 psu), was tested by investigating macroalgal diversity on hard substrates along the natural salinity gradient in the Baltic Sea. Field data on species occurrence and abundance were collected by SCUBA diving along 10 transects of the Finnish, Swedish and German coasts, covering a salinity range from 3.9 to 27 psu. Macroalgal species numbers declined steadily with salinity, decreasing until 7.2 psu was reached, but in the horohalinicum, a marked reduction of species number and a change in diversity were indicated by the Shannon index and evenness values. The non-linear decrease in macroalgal diversity at 5–8 psu and the lack of increase in species numbers at salinities below 5 psu imply a restricted applicability of Remane’s species-minimum concept to macroalgae.

Hendrik Schubert; Peter Feuerpfeil; Ronny Marquardt; Irena Telesh; Sergei Skarlato

2011-01-01T23:59:59.000Z

380

Towards Optimal Measurement of Power Spectra I: Minimum Variance Pair Weighting and the Fisher Matrix  

E-Print Network [OSTI]

This is the first of a pair of papers which address the problem of measuring the unredshifted power spectrum in optimal fashion from a survey of galaxies, with arbitrary geometry, for Gaussian or non-Gaussian fluctuations, in real or redshift space. In this first paper, that pair weighting is derived which formally minimizes the expected variance of the unredshifted power spectrum windowed over some arbitrary kernel. The inverse of the covariance matrix of minimum variance estimators of windowed power spectra is the Fisher information matrix, which plays a central role in establishing optimal estimators. Actually computing the minimum variance pair window and the Fisher matrix in a real survey still presents a formidable numerical problem, so here a perturbation series solution is developed. The properties of the Fisher matrix evaluated according to the approximate method suggested here are investigated in more detail in the second paper.

A. J. S. Hamilton

1997-01-04T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Boulder, Colorados SmartRegs: Minimum Performance Standards for Residential Rental Housing  

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

Policy Brief is an excerpt from the report: "Delivering Energy Efficiency to Middle Income Single Policy Brief is an excerpt from the report: "Delivering Energy Efficiency to Middle Income Single Family Households." For the full report and other resources visit: http://middleincome.lbl.gov March 20, 2012 Boulder, Colorado's SmartRegs: Minimum Performance Standards for Residential Rental Housing The Case for Performance Standards The City of Boulder's Climate Action Plan calls for greenhouse gas emissions reductions across all sectors of the community (e.g., buildings, transportation and industry). Energy conservation in new and existing buildings plays a key role in the plan's ambitious goals. In 2006, Boulder residents overwhelmingly approved a Climate Action Tax to fund Climate Action Plan efforts. For more than a decade the city has been incrementally strengthening minimum energy efficiency standards for residential

382

Improved approximation algorithms for low-density instances of the Minimum Entropy Set Cover Problem  

Science Journals Connector (OSTI)

Abstract We study the approximability of instances of the minimum entropy set cover problem, parameterized by the average frequency of a random element in the covering sets. We analyze an algorithm combining a greedy approach with another one biased towards large sets. The algorithm is controlled by the percentage of elements to which we apply the biased approach. The optimal parameter choice leads to improved approximation guarantees when average element frequency is less than e.

Cosmin Bonchi?; Gabriel Istrate

2014-01-01T23:59:59.000Z

383

Granby Pumping Plant Switchyard - Windy Gap Substation Transmission Line Rebuild, Grand County, Colorado: Final Environmental Impact Statement Appendices  

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

PUMPING PLANT SWITCHYARD - WINDY GAP PUMPING PLANT SWITCHYARD - WINDY GAP SUBSTATION TRANSMISSION LINE REBUILD, GRAND COUNTY, COLORADO DOE/EIS-0400 Final Environmental Impact Statement Appendices Grand County, Colorado June 2013 Appendix A EIS Scoping Report GRANBY PUMPING PLANT - WINDY GAP TRANSMISSION LINE REBUILD PROJECT ENVIRONMENTAL IMPACT STATEMENT SCOPING SUMMARY REPORT December 4, 2007

384

Free Magnetic Energy in Solar Active Regions above the Minimum-Energy Relaxed State  

E-Print Network [OSTI]

To understand the physics of solar flares, including the local reorganisation of the magnetic field and the acceleration of energetic particles, we have first to estimate the free magnetic energy available for such phenomena, which can be converted into kinetic and thermal energy. The free magnetic energy is the excess energy of a magnetic configuration compared to the minimum-energy state, which is a linear force-free field if the magnetic helicity of the configuration is conserved. We investigate the values of the free magnetic energy estimated from either the excess energy in extrapolated fields or the magnetic virial theorem. For four different active regions, we have reconstructed the nonlinear force-free field and the linear force-free field corresponding to the minimum-energy state. The free magnetic energies are then computed. From the energy budget and the observed magnetic activity in the active region, we conclude that the free energy above the minimum-energy state gives a better estimate and more insights into the flare process than the free energy above the potential field state.

S. Regnier; E. R. Priest

2008-05-12T23:59:59.000Z

385

Patents and Clean Energy: Bridging the Gap Between Evidence and Policy |  

Open Energy Info (EERE)

Patents and Clean Energy: Bridging the Gap Between Evidence and Policy Patents and Clean Energy: Bridging the Gap Between Evidence and Policy Jump to: navigation, search Name Patents and Clean Energy: Bridging the Gap Between Evidence and Policy Agency/Company /Organization United Nations Environment Programme Sector Energy Focus Area Renewable Energy Topics Market analysis, Policies/deployment programs Resource Type Publications Website http://www.unep.org/greenecono References Patents and Clean Energy: Bridging the Gap Between Evidence and Policy[1] Overview "Technology development and its rapid diffusion are considered crucial for tackling the climate change challenge. In particular, enhancing technology transfer towards developing countries has been an integral part of the global climate change regime since the inception of the United Nations

386

Event:GGKP-Green Growth: Addressing the Knowledge Gaps Day 1 | Open Energy  

Open Energy Info (EERE)

GGKP-Green Growth: Addressing the Knowledge Gaps: on 2012/01/12 GGKP-Green Growth: Addressing the Knowledge Gaps: on 2012/01/12 The Green Growth Knowledge Platform (GGKP) will hold its inaugural conference, "Green Growth: Addressing the Knowledge Gaps," January 12-13, 2012, in Mexico City Mexico. The conference aims to take stock of the current understanding of the economics of green growth; engage researchers and practitioners in an ongoing dialogue to increase understanding of how green growth approaches can be applied in the field; identify knowledge gaps and establish priorities for knowledge-building work and implementation; and launch follow-on efforts. The conference location will allow attendees to benefit from Mexico's experiences from taking a leading role internationally in advocating pathways to green development.

387

Integration of MEA Components-Status and Technology Gaps: A Stakeholders Perspective  

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

DOE Fuel Cell Pre-Solicitation Workshop DOE Fuel Cell Pre-Solicitation Workshop March 16-17, 2010 Denver, CO 3M Fuel Cell Components Program Mark Debe, Steve Hamrock, Radoslav Atanasoski, Pinar Serim, Eric Funkenbusch, Mike Yandrasits, Stan Garnsworthy and Customers Integration of MEA Components - Status and Technology Gaps - A Stakeholder's Perspective 2 Outline: 1. What does MEA integration mean? 2. Where the technology may be going with regard to 2015 3. Status and relative gaps for 2015 at the individual component level 4. Status and relative gaps for 2015 at the MEA integration level 5. Suggestions where DOE should concentrate its efforts in the near future 6. Other general suggestions and recommendations Integration of MEA Components 3M perspectives on technology development needs and gaps. 3M U.S. DOE Fuel Cell Pre-Solicitation Workshop Denver, CO, March 16-17, 2010

388

Fact #837: September 8, Gap between Net Imports and Total Imports of Petroleum is Widening  

Broader source: Energy.gov [DOE]

Net imports of petroleum (total imports minus exports) were 6.2 million barrels per day in 2013 – the lowest since the 1980's (dark blue line). The widening gap between total imports (light blue...

389

Artificial Neural Network Models for the Gap Discontinuities in Stripline Circuits  

Science Journals Connector (OSTI)

Gap discontinuities appear in many stripline circuits, such as the multilayer microwave monolithic ICs and the interconnect systems in high-speed digital circuits. In this paper, a multilayer perceptron neural...

Bing-Zhong Wang; Jingsong Hong

2000-05-01T23:59:59.000Z

390

Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis  

Broader source: Energy.gov [DOE]

This report describes the technical and cost gap analysis performed to identify pathways for reducing the costs of molten carbonate fuel cell (MCFC) and phosphoric acid fuel cell (PAFC) stationary fuel cell power plants.

391

Band gap and electronic structure of MgSiN{sub 2}  

SciTech Connect (OSTI)

Density functional theory calculations and electron energy loss spectroscopy indicate that the electronic structure of ordered orthorhombic MgSiN{sub 2} is similar to that of wurtzite AlN. A band gap of 5.7?eV was calculated for both MgSiN{sub 2} (indirect) and AlN (direct) using the Heyd-Scuseria-Ernzerhof approximation. Correction with respect to the experimental room-temperature band gap of AlN indicates that the true band gap of MgSiN{sub 2} is 6.2?eV. MgSiN{sub 2} has an additional direct gap of 6.3?eV at the ? point.

Quirk, J. B., E-mail: james.quirk09@imperial.ac.uk; Råsander, M.; McGilvery, C. M.; Moram, M. A. [Department of Materials, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom); Palgrave, R. [Department of Chemistry, University College London, Gordon Street WC1H 0AJ (United Kingdom)

2014-09-15T23:59:59.000Z

392

Aerodynamic drag reduction apparatus for gap-divided bluff bodies such as tractor-trailers  

DOE Patents [OSTI]

An apparatus for reducing the aerodynamic drag of a bluff-bodied vehicle such as a tractor-trailer in a flowstream, the bluff-bodied vehicle of a type having a leading portion, a trailing portion connected to the leading portion, and a gap between the leading and trailing portions defining a recirculation zone. The apparatus is preferably a baffle assembly, such as a vertical panel, adapted to span a width of the gap between the leading and trailing portions so as to impede cross-flow through the gap, with the span of the baffle assembly automatically adjusting for variations in the gap width when the leading and trailing portions pivot relative to each other.

Ortega, Jason M. (Pacifica, CA); Salari, Kambiz (Livermore, CA)

2006-07-11T23:59:59.000Z

393

The role of gap phase processes in the biomass dynamics of tropical forests  

Science Journals Connector (OSTI)

...gap phase processes in the biomass dynamics of tropical forests...understood. Above-ground woody biomass in some tropical forest...greenhouse gas emissions from biomass burning, decomposition and soils forest in conversion, shifting cultivation and...

2007-01-01T23:59:59.000Z

394

Ternary silicon germanium nitrides: A class of tunable band gap materials  

Science Journals Connector (OSTI)

Ternary silicon germanium nitrides with compositions of both Si1?xGexN and (Si1?xGex)3N4 are predicted to have a band gap that decreases as the germanium:silicon ratio increases. The band gap is indirect for the silicon-rich compounds but becomes direct as the germanium content increases, due to greater mixing of s and p states in the conduction band. This effect of band gap tunability has recently been reported for (Si1?xGex)3N4 in the spinel structure [Boyko et al., Phys. Rev. B 81, 155207 (2010)]. Our results suggest that this is a more general effect and that ternary group-14 nitrides should form a class of semiconducting materials for which the band gap can be tuned by controlling the composition.

Judy N. Hart; Neil L. Allan; Frederik Claeyssens

2011-12-27T23:59:59.000Z

395

Photonic band gap of a graphene-embedded quarter-wave stack  

SciTech Connect (OSTI)

Here, we present a mechanism for tailoring the photonic band structure of a quarter-wave stack without changing its physical periods by embedding conductive sheets. Graphene is utilized and studied as a realistic, two-dimensional conductive sheet. In a graphene-embedded quarter-wave stack, the synergic actions of Bragg scattering and graphene conductance contributions open photonic gaps at the center of the reduced Brillouin zone that are nonexistent in conventional quarter-wave stacks. Such photonic gaps show giant, loss-independent density of optical states at the fixed lower-gap edges, of even-multiple characteristic frequency of the quarter-wave stack. The conductive sheet-induced photonic gaps provide a platform for the enhancement of light-matter interactions.

Fan, Yuancheng [Ames Laboratory; Wei, Zeyong [Tongji University; Li, Hongqiang [Tongji University; Chen, Hong [Tongji University; Soukoulis, Costas M [Ames Laboratory

2013-12-10T23:59:59.000Z

396

Strain-induced band-gap engineering of graphene monoxide and its effect on graphene  

Science Journals Connector (OSTI)

Using first-principles calculations we demonstrate the feasibility of band-gap engineering in two-dimensional crystalline graphene monoxide (GMO), a recently reported graphene-based material with a 1:1 carbon/oxygen ratio. The band gap of GMO, which can be switched between direct and indirect, is tunable over a large range (0–1.35 eV) for accessible strains. Electron and hole transport occurs predominantly along the zigzag and armchair directions (armchair for both) when GMO is a direct- (indirect-) gap semiconductor. A band gap of ?0.5 eV is also induced in graphene at the K? points for GMO/graphene hybrid systems.

H. H. Pu; S. H. Rhim; C. J. Hirschmugl; M. Gajdardziska-Josifovska; M. Weinert; J. H. Chen

2013-02-13T23:59:59.000Z

397

Review: Teach! Change! Empower! Solutions for Closing the Achievement Gaps by Carl A. Grant  

E-Print Network [OSTI]

the Achievement Gaps by Carl A. Grant. Thousand Oaks, CA:p. 7). In this spirit Carl A. Grant presents Teach! Change!In this workbook-like text, Grant stresses reflection as a

Turner, Rhonda J

2010-01-01T23:59:59.000Z

398

Direct gap photoluminescence of n-type tensile-strained Ge-on-Si  

E-Print Network [OSTI]

Room temperature direct gap photoluminescence (PL) was observed from n-type tensile-strained epitaxial Ge-on-Si. The PL intensity increases with n-type doping due to a higher electron population in the direct ? valley as ...

Sun, Xiaochen

399

Large inherent optical gain from the direct gap transition of Ge thin films  

E-Print Network [OSTI]

The recent demonstration of Ge-on-Si diode lasers renews the interest in the unique carrier dynamics of Ge involving both direct (?) and indirect (L) valleys. Here, we report a large inherent direct gap optical gain ...

Wang, Xiaoxin

400

Codes and Standards Gap Analysis Helps DOE Define Research Priorities (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes NREL's accomplishments in analyzing gaps in codes and standards for alternative vehicle fuels, including hydrogen. Work was performed by the Hydrogen Technologies and Systems Center.

Not Available

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

E-Print Network 3.0 - auditory gap detection Sample Search Results  

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

Sample search results for: auditory gap detection Page: << < 1 2 3 4 5 > >> 1 Exp Brain Res (2005) 162: 172180 DOI 10.1007s00221-004-2128-2 Summary: what you hear: auditory...

402

A novel white-light scanning interferometer for absolute nano-scale gap thickness measurement  

E-Print Network [OSTI]

This paper presents a special configuration of white-light scanning interferometer, in which the measured gap is not located in any interference arm of the interferometer, but acts as an amplitude-and-phase modulator of ...

Xu, Zhiguang

403

Procedures for Filling Short Gaps in Energy Use and Weather Data  

E-Print Network [OSTI]

Filling short gaps (a few hours) in hourly energy use and weather data can be useful for (i) retrofit savings analysis and calculation, and for (ii) diagnostic purposes. The paper evaluates four methods for rehabilitating short periods of missing...

Chen, H.; Claridge, D. E.

2000-01-01T23:59:59.000Z

404

E-Print Network 3.0 - abort-gap monitor bsra Sample Search Results  

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

no rf structure (e.g., in abort... gap) 12;21403 US LARP Instrumentation Collaboration Mtg 6 Additional Instrumentation The US LARP Source: Large Hadron Collider Program - US...

405

Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs—Summary Report  

SciTech Connect (OSTI)

This document is a summarization of the report, Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs, the final report for phase 2 of the SPSP (DOE workforce study) project.

O'Neil, Lori Ross; Assante, Michael; Tobey, D. H.; Conway, T. J.; Vanderhorst, Jr, T. J.; Januszewski, III, J.; Leo, R.; Perman, K.

2013-07-01T23:59:59.000Z

406

Triple photonic band-gap structure dynamically induced in the presence of spontaneously generated coherence  

SciTech Connect (OSTI)

We study a cold atomic sample coherently driven into the five-level triple-{Lambda} configuration for attaining a dynamically controlled triple photonic band-gap structure. Our numerical calculations show that three photonic band gaps with homogeneous reflectivities up to 92% can be induced on demand around the probe resonance by a standing-wave driving field in the presence of spontaneously generated coherence. All these photonic band gaps are severely malformed with probe reflectivities declining rapidly to very low values when spontaneously generated coherence is gradually weakened. The triple photonic band-gap structure can also be attained in a five-level chain-{Lambda} system of cold atoms in the absence of spontaneously generated coherence, which however requires two additional traveling-wave fields to couple relevant levels.

Gao Jinwei; Bao Qianqian; Wan Rengang; Cui Cuili; Wu Jinhui [College of Physics, Jilin University, Changchun 130012 (China)

2011-05-15T23:59:59.000Z

407

Helium gap in the warm dense matter regime and experimental reflectivity measurements  

Science Journals Connector (OSTI)

We revisit the reflectivity measurements of Celliers et al. [P. M. Celliers, P. Loubeyre, J. H. Eggert, S. Brygoo, R. S. McWilliams, D. G. Hicks, T. R. Boehly, R. Jeanloz, and G. W. Collins, Phys. Rev. Lett. 104, 184503 (2010)] for He at high density by taking into account a temperature dependence, based on existing ab initio calculations, in the functional form of the gap energy inferred from these data. We show that, when accounting for such a temperature dependence, the predicted behavior of the gap energy at high density differs significantly from the one suggested by Celliers et al. and that He is predicted to become metallic (gap closure) at much higher densities, around 10 g/cm3. High-pressure experiments over a larger temperature and density range are mandatory to correctly determine this gap behavior, a problem of crucial importance for astrophysical applications.

F. Soubiran, S. Mazevet, C. Winisdoerffer, and G. Chabrier

2012-09-04T23:59:59.000Z

408

Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis  

SciTech Connect (OSTI)

This report describes the technical and cost gap analysis performed to identify pathways for reducing the costs of molten carbonate fuel cell (MCFC) and phosphoric acid fuel cell (PAFC) stationary fuel cell power plants.

Remick, R.; Wheeler, D.

2010-09-01T23:59:59.000Z

409

Abstract CN05-01: Genomics and cancer management: Mind the gap!  

Science Journals Connector (OSTI)

...2013 meeting-abstract Carcinogenesis Genomics and Epigenetics of Risk Prediction in Early Disease Genomics and Epigenetics of Risk Prediction in...National Harbor, MD Abstract CN05-01: Genomics and cancer management: Mind the gap...

Janusz A. Jankowski

2013-11-01T23:59:59.000Z

410

Exploration of the Gap Between Computer Science Curriculum and Industrial I.T Skills Requirements  

E-Print Network [OSTI]

This paper sets out to examine the skills gaps between the industrial application of Information Technology and university academic programmes (curriculum). It looks at some of the causes, and considers the probable solutions for bridging the gap between them and suggests the possibilities of exploring a new role for our universities and employers of labor. It also highlights strategies to abolish the misalignment between university and industry. The main concept is to blend the academic rigidity with the industrial relevance.

Ayofe, Azeez Nureni

2009-01-01T23:59:59.000Z

411

Systematic Study of Electronic Phases, Band Gaps and Band Overlaps of Bismuth Antimony Nanowires  

E-Print Network [OSTI]

We have developed an iterative one dimensional model to study the narrow band-gap and the associated non-parabolic dispersion relations for bismuth antimony nanowires. An analytical approximation has also been developed. Based on the general model, we have developed, we have calculated and analyzed the electronic phase diagrams and the band-gap/band-overlap map for bismuth antimony nanowires, as a function of stoichiometry, growth orientation, and wire width.

Shuang Tang; Mildred Dresselhaus

2013-12-03T23:59:59.000Z

412

Fundamental gaps with approximate density functionals: The derivative discontinuity revealed from ensemble considerations  

SciTech Connect (OSTI)

The fundamental gap is a central quantity in the electronic structure of matter. Unfortunately, the fundamental gap is not generally equal to the Kohn-Sham gap of density functional theory (DFT), even in principle. The two gaps differ precisely by the derivative discontinuity, namely, an abrupt change in slope of the exchange-correlation energy as a function of electron number, expected across an integer-electron point. Popular approximate functionals are thought to be devoid of a derivative discontinuity, strongly compromising their performance for prediction of spectroscopic properties. Here we show that, in fact, all exchange-correlation functionals possess a derivative discontinuity, which arises naturally from the application of ensemble considerations within DFT, without any empiricism. This derivative discontinuity can be expressed in closed form using only quantities obtained in the course of a standard DFT calculation of the neutral system. For small, finite systems, addition of this derivative discontinuity indeed results in a greatly improved prediction for the fundamental gap, even when based on the most simple approximate exchange-correlation density functional – the local density approximation (LDA). For solids, the same scheme is exact in principle, but when applied to LDA it results in a vanishing derivative discontinuity correction. This failure is shown to be directly related to the failure of LDA in predicting fundamental gaps from total energy differences in extended systems.

Kraisler, Eli; Kronik, Leeor [Department of Materials and Interfaces, Weizmann Institute of Science, Rehovoth 76100 (Israel)] [Department of Materials and Interfaces, Weizmann Institute of Science, Rehovoth 76100 (Israel)

2014-05-14T23:59:59.000Z

413

Effect of gaps on the performance of the vertically installed wet thermal insulator  

SciTech Connect (OSTI)

In SMART, the main flow path of the reactor coolant and the pressurizer partially share common walls in the reactor coolant system. To reduce this heat transfer, the wet thermal insulator (WTI) is installed on the inner wall of the pressurizer. The WTI is constituted of stacked thin stainless steel plates. The water layer width between the plates is chosen to suppress natural convection in each layer. The plates of the WTI require clearance for thermal expansion. When the WTI is installed on a vertical wall, this clearance might cause gaps at the top and bottom at the operating condition. In this study, we focused on the effect of gaps at the both ends on the WTI performance. A numerical simulation was conducted for an 8-layer WTI with gaps at the both ends. To compare with this, a simulation of a WTI without a gap, which is an ideal case, was also conducted. The simulation was conducted in a 2-dimensional manner by a commercial computational fluid dynamics code, FLUENT. The simulations showed that the WTI thermal performance was substantially decreased by a flow that circulated through the top and bottom gaps and water layers at the sides of the WTI. This circulation caused a high temperature difference between the wall and the circulating flow. To find a way to prevent this performance deterioration of the WTI we simulated several cases with the smaller gap heights. However, the flow circulation and the higher heat transfer rate were still observed even at a case with the smallest gap, which seems to be hardly achievable in a real installation. Another way of reducing the flow circulation was suggested and also simulated in this study. (authors)

Kim, S. H.; Kim, Y. I.; Park, C. T.; Choi, S.; Yoon, J. [Korea Atomic Energy Research Inst., Daeduk-daero 989-111, Yuseong-Gu, Daejeon, 305-353 (Korea, Republic of)

2012-07-01T23:59:59.000Z

414

Geology of the Wallula Gap Area, Washington. [Grande Ronde, Wanapum, and Saddle Mountains basalts  

SciTech Connect (OSTI)

This study focuses on the structure and stratigraphy of an 80-km/sup 2/ area at the southern margin of the Pasco Basin in Wallula Gap. Field stratigraphy, petrography, natural remanent magnetism, and major-element chemistry indicate that the tholeiitic basalt flows of the Wallula Gap area correlate with units of the Grande Ronde, Wanapum, and Saddle Mountains Formations of the Yakima Subgroup of the Columbia River Basalt Group. Flows of the Frenchman Springs, Umatilla, Pomona, Elephant Mountain, and Ice Harbor Mmebers are present in the area. The Frenchman Springs Member exposed in the Wallula Gap is more than 185 m thick and consists of eight to nine flows. Its thickness and possible contemporaneous structural deformation apparently prevented emplacement of both the Roza and Priest Rapids Members at this locality. Structural uplift of the Horse Heaven Hills began prior to extrusion of the Pomona flow. Both the Pomona and Elephant Mountain Members thin and pinch out over the crest of the uplift near Mound Pond. The Ice Harbor flow was apparently confined to the basin north of the Horse Heaven uplift, but an exposure at Mound Pond suggests it flowed through Wallula Gap as an intracanyon flow. The Wallula Gap fault zone trends N65/sup 0/W and can be traced for at least 11 km along the north flank of the Horse Heaven Hills uplift. Where the fault intersects the Olympic-Wallowa Lineament at Van Sycle Canyon 8 km east of Wallula Gap, it is a broad zone of normal faulting, 300 m wide, with as much as 310 m of displacement of the basalt stratigraphy. Two faults occur in the northern portion of Van Sycle Canyon and define a graben trending N45/sup 0/W. A third fault, roughly parallel to the Wallula Gap fault, transects the The Nub and offsets 14 m of Ice Harbor basalt.

Gardner, J.N.; Snow, M.G.; Fecht, K.R.

1981-12-01T23:59:59.000Z

415

ANALYSIS OF THE AXIAL GAP VS FIBERBOARD MOISTURE CONTENT IN A 9975 SHIPPING PACKAGE  

SciTech Connect (OSTI)

The fiberboard assembly within a 9975 shipping package contains a modest amount of moisture, which can migrate to the cooler regions of the package when an internal heat load is present. Typically, this leads to increased moisture levels in the bottom fiberboard layers, along with elevated chloride levels which can leach from the fiberboard. Concerns have been raised that this condition could lead to corrosion of the stainless steel drum. It has been postulated that checking the axial gap at the top of the package against the current 1 inch maximum criterion provides a sufficient indication regarding the integrity of the fiberboard and drum. This report estimates the increase in axial gap that might be expected for a given moisture increase in the bottom fiberboard layers, and the likelihood that the increase will create a nonconforming condition that will lead to identification of the moisture increase. Using data relating the fiberboard moisture content with the degree of compaction under load, the present analysis indicates that the axial gap will increase by 0.282 inch as the bottom fiberboard layers approach the saturation point. This increase will cause approximately 58% of packages with otherwise nominal package component dimensions to fail the axial gap criterion, based on a survey of axial gap values recorded in K-Area surveillance activities. As the moisture content increases above saturation, the predicted increase in axial gap jumps to 0.405 inch, which would result in 92% or more of all packages failing the axial gap criterion. The data and analysis described in this report are specific to cane fiberboard. While it is expected that softwood fiberboard will behave similarly, such behavior has not yet been demonstrated.

Daugherty, W.

2013-09-30T23:59:59.000Z

416

Avian response to microclimate in canopy gaps in a bottomland hardwood forest.  

SciTech Connect (OSTI)

Abstract - Microclimate may infl uence use of early successional habitat by birds. We assessed the relationships between avian habitat use and microclimate (temperature, light intensity, and relative humidity) in experimentally created canopy gaps in a bottomland hardwood forest on the Savannah River Site, SC. Gaps were 2- to 3-year-old group-selection timber harvest openings of three sizes (0.13, 0.26, 0.50 ha). Our study was conducted from spring through fall, encompassing four bird-use periods (spring migration, breeding, post-breeding, and fall migration), in 2002 and 2003. We used mist netting and simultaneously recorded microclimate variables to determine the influence of microclimate on bird habitat use. Microclimate was strongly affected by net location within canopy gaps in both years. Temperature generally was higher on the west side of gaps, light intensity was greater in gap centers, and relative humidity was higher on the east side of gaps. However, we found few relationships between bird captures and the microclimate variables. Bird captures were inversely correlated with temperature during the breeding and postbreeding periods in 2002 and positively correlated with temperature during spring 2003. Captures were high where humidity was high during post-breeding 2002, and captures were low where humidity was high during spring 2003. We conclude that variations in the local microclimate had minor infl uence on avian habitat use within gaps. Instead, habitat selection in relatively mild regions like the southeastern US is based primarily on vegetation structure, while other factors, including microclimate, are less important.

Champlin, Tracey B.; Kilgo, John C.; Gumpertz, Marcia L.; Moorman, Christopher E.

2009-04-01T23:59:59.000Z

417

Minimum variance hedging with bivariate regime-switching model for WTI crude oil  

Science Journals Connector (OSTI)

This paper proposes a four-regime bivariate Markov regime-switching model to estimate the daily time-varying minimum variance hedge ratios for West Texas Intermediate (WTI) crude oil, and evaluates its in- and out-of-sample hedging performances with two-regime model, CC-GARCH, TVC-GARCH, and OLS models. Empirical results reveal that the four-regime Markov switching model outperforms the other models for both in- and out-of-sample hedging performance. Based on Hansen’s SPA test (2005), the four-regime model significantly outperforms the other models for only in-sample hedging.

Jui-Cheng Hung; Yi-Hsien Wang; Matthew C. Chang; Kuang-Hsun Shih; Hsiu-Hsueh Kao

2011-01-01T23:59:59.000Z

418

Relaxation of spheromak plasmas toward a minimum-energy state and global magnetic fluctuations  

Science Journals Connector (OSTI)

Globally coherent modes which are observed during formation in the S-1 Spheromak plasma occur during flux conversion and plasma relaxation toward a minimum-energy state, suggesting that these modes provide a means for relaxation. A significant finding is the temporal progression of these modes through a sequence n=5,4,3,2, m=1, as q rises through rational fractions m/n, where n and m are defined by the functional dependence ei(n?+mtheta) of the fluctuations on toroidal angle ? and poloidal angle theta. Comparison with theory of the observed modes and the sequence of occurrence suggests that these modes are due to resistive MHD instabilities.

A. Janos; G. W. Hart; M. Yamada

1985-12-23T23:59:59.000Z

419

Correlation in fermion or boson systems as the minimum of entropy relative to all free states  

E-Print Network [OSTI]

In the context of many-fermion systems, "correlation" refers to the inadequacy of an independent-particle model. Using "free" states as archetypes of our independent-particle model, we have proposed a measure of correlation that we called "nonfreeness" [Int. J. Quant. Inf. 5, 815 (2007)]. The nonfreeness of a many-fermion state was defined to be its entropy relative to the unique free state with the same 1-matrix. In this article, we prove that the nonfreeness of a state is the minimum of its entropy relative to all free states. We also extend the definition of nonfreeness to many-boson states and discuss a couple of examples.

Alex D. Gottlieb; Norbert J. Mauser

2014-03-29T23:59:59.000Z

420

Near minimum-time maneuvers of large space structures using parameter optimization and lyapunov feedback control  

E-Print Network [OSTI]

Thruster Set Location, Saturation Thrust, and Positive Voltage Thrust Direction Thruster Manufacture 7 (1-2) 8 (3-4) 9 (5-6) 10 (7-8) Node ? 327 325 321 323 427 437 324 322 328 326 (m) -1. 35 1. 35 1. 35 -1. 35 -2. 82649 2. 82649...NEAR MINIMUM-TIME MANEUVERS OF LARGE SPACE STRUCTURES USING PARAMETER OPTIMIZATION AND LYAPUNOV FEEDBACK CONTROL A Thesis by IvtlCHAEL TIMOTHY CARTER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Carter, Michael Timothy

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Diversity and Spatial Distribution of Hydrazine Oxidoreductase (hzo) Gene in the Oxygen Minimum Zone Off Costa Rica  

E-Print Network [OSTI]

Anaerobic ammonia oxidation (anammox) as an important nitrogen loss pathway has been reported in marine oxygen minimum zones (OMZs), but the community composition and spatial distribution of anammox bacteria in the eastern ...

Kong, Liangliang

422

Minimum Cost of Photovoltaic Energy for a Utility Grid and General Features of a Generating Plant Using Costless Solar Cells  

Science Journals Connector (OSTI)

The purpose of this work is to evaluate the minimum long term cost of electricity produced by future photovoltaic plants connected to a utility grid. As the cost of photovoltaic cells is supposed to drop drama...

Daniel Madet

1982-01-01T23:59:59.000Z

423

?Thermo-Hydraulic Performance of a Roughened Square Duct Having Inclined Ribs with a Gap on Two Opposite Walls  

E-Print Network [OSTI]

Abstract:- Experimentation has been carried out to find the influence of a gap provided in ribs on thermohydraulic performance of a square duct roughened with discrete inclined ribs. The two opposite walls of the square duct are roughened with ribs having attack angle (?) of 45 0 and a gap on its length. The investigation has been performed for relative roughness pitch (p/e) of 10, relative roughness height (e/Dh) of 0.060 and Reynolds number is varied in the range of 5000-40,000. The other rib parameters; relative gap position (d/W) and relative gap width (g/e) is varied in the range of 1/4 – 2/3(4 steps) and 0.5 – 1.5 (3 steps) respectively. The comparative study of various cases shows that the ribs with a gap considerably enhance the value of thermohydraulic performance for the range of parameters taken for the present investigation. Presence of inclined ribs with a gap yields about 2.1-fold enhancements in thermo-hydraulic performance as compared to smooth duct. The maximum value of thermo-hydraulic performance parameter has been observed for relative gap width of 1.0 and the relative gap position of 1/3. Keywords:- Relative gap width, Relative gap position, Reynolds number, Thermo-hydraulic performance. I.

unknown authors

424

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a Triple-Band Metal Print A New Gap-Opening Mechanism in a Triple-Band Metal Print A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd For the condensed-matter physicist, the words "electronic structure" are what it's all about. Short-hand for a description of the way electrons behave in solids, liquids, molecules, and even atoms, electronic structure underlies almost all of the everyday properties of matter from structural strength to electrical conductivity. For example, metals conduct electricity because some of their electrons have access to a continuous band of energies, whereas a break or gap in the band turns the metal into an insulator.

425

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a Triple-Band Metal Print A New Gap-Opening Mechanism in a Triple-Band Metal Print A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd For the condensed-matter physicist, the words "electronic structure" are what it's all about. Short-hand for a description of the way electrons behave in solids, liquids, molecules, and even atoms, electronic structure underlies almost all of the everyday properties of matter from structural strength to electrical conductivity. For example, metals conduct electricity because some of their electrons have access to a continuous band of energies, whereas a break or gap in the band turns the metal into an insulator.

426

Gap-Size Distribution Functions of a Random Sequential Adsorption Model of Segments on the Line  

E-Print Network [OSTI]

We performed extensive simulations accompanied by a detailed study of a two-segment size random sequential model on the line. We followed the kinetics towards the jamming state, but we paid particular attention to the characterization of the jamming state structure. In particular, we studied the effect of the size ratio on the mean-gap size, the gap-size dispersion, gap-size skewness, and gap-size kurtosis at the jamming state. We also analyzed the above quantities for the four possible segment-to-segment gap types. We ranged the values of the size ratio from one to twenty. In the limit of a size ratio of one, one recovers the classical car-parking problem. We observed that at low size ratios the jamming state is constituted by short streaks of small and large segments, while at high values of the size ratio the jamming state structure is formed by long streaks of small segments separated by a single large segment. This view of the jamming state structure as a function of the size ratio is supported by the various measured quantities. The present work can help provide insight, for example, on how to minimize the interparticle distance or minimize fluctuations around the mean particle-to-particle distance.

N. A. M. Araujo; A. Cadilhe

2004-04-18T23:59:59.000Z

427

Solar UV-B in tropical forest gaps: Analysis using direct and diffuse radiation  

SciTech Connect (OSTI)

Experiments with natural levels of solar ultraviolet-B radiation (UV-B) have recently shown inhibition of the growth of some tropical forest tree seedlings. A knowledge of forest radiation environments is needed to help assess UV-B effects in natural situations. Although forest canopies strongly attenuate solar radiation, treefall gaps provide a very different radiation environment. We simultaneously measured both UV-B and photosynthetically active radiation (PAR) in forest gaps on Barro Colorado Island, Panama. Outside the forest, UV-B is predominately diffuse even under clear sky conditions. In sunflecks of small forest gaps, most of the UV-B was in the direct beam component. Compared to conditions outside the forest, the UV-B in these sunflecks was low relative to PAR. Shaded portions of the gap, in contrast, had proportionately high levels of UV-B relative to PAR. There are indications in the literature that relatively low UV-B levels may be effective under low PFD. Seasonal trends of PAR and UV-B in different locations in gaps can be inferred from hemispherical canopy photographs.

Flint, S.D.; Caldwell, M.M. [Utah State Univ., Logan, UT (United States)

1995-06-01T23:59:59.000Z

428

Band gaps in InN/GaN superlattices: Nonpolar and polar growth directions  

SciTech Connect (OSTI)

The electronic structures of nonpolar short-period InN/GaN superlattices (SLs) grown in the wurtzite a- and m-directions have been calculated and compared to previous calculations for polar superlattices (grown in the c-direction). The variation of the band gaps with the composition (m, n) of the mInN/nGaN unit cells of the superlattices was examined. The band structures were obtained by self-consistent calculations based on the local density approximation to the density functional theory using the Linear-Muffin-Tin-Orbital method with a semi-empirical correction for the band gaps. The calculated band gaps and their pressure coefficients for nonpolar superlattices are similar to those calculated for bulk InGaN alloys with an equivalent In/Ga concentration ratio. This is very different from what has been found in polar superlattices where the band gaps are much smaller and vanish when the number m of InN layers in the unit cell exceeds three. A strong internal electric field is responsible for this behavior of polar structures. Experimental photoluminescence data for polar SLs agree very well with gaps calculated for the nonpolar structures. It is suggested that this is caused by screening of the electric field in the polar structures by carriers originating from unintentional defects.

Gorczyca, I., E-mail: iza@unipress.waw.pl; Skrobas, K.; Suski, T. [Institute of High Pressure Physics, UNIPRESS, 01-142 Warsaw (Poland); Christensen, N. E.; Svane, A. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

2013-12-14T23:59:59.000Z

429

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a Triple-Band Metal Print A New Gap-Opening Mechanism in a Triple-Band Metal Print A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd For the condensed-matter physicist, the words "electronic structure" are what it's all about. Short-hand for a description of the way electrons behave in solids, liquids, molecules, and even atoms, electronic structure underlies almost all of the everyday properties of matter from structural strength to electrical conductivity. For example, metals conduct electricity because some of their electrons have access to a continuous band of energies, whereas a break or gap in the band turns the metal into an insulator.

430

Gamma-Ray Burst Polarimeter - GAP - aboard the Small Solar Power Sail Demonstrator IKAROS  

E-Print Network [OSTI]

The small solar power sail demonstrator "IKAROS" is a Japanese engineering verification spacecraft launched by H-IIA rocket on May 21, 2010 at JAXA Tanegashima Space Center. IKAROS has a huge sail with 20 m in diameter which is made of thin polyimide membrane. This sail converts the solar radiation-pressure into the propulsion force of IKAROS and accelerates the spacecraft. The Gamma-Ray Burst Polarimeter (GAP) aboard IKAROS is the first polarimeter to observe the gamma-ray polarization of Gamma-Ray Bursts (GRBs) during the IKAROS cruising phase. GAP is a tinny detector of 3.8 kg in weight and 17 cm in size with an energy range between 50-300 keV. The GAP detector also plays a role of the interplanetary network (IPN) to determine the GRB direction. The detection principle of gamma-ray polarization is the anisotropy of the Compton scattering. GAP works as the GRB polarimeter with the full coincidence mode between the central plastic and the surrounding CsI detectors. GAP is the first instrument, devoted for th...

Yonetoku, D; Gunji, S; Mihara, T; Sakashita, T; Morihara, Y; Kikuchi, Y; Fujimoto, H; Toukairin, N; Kodama, Y; Kubo, S

2010-01-01T23:59:59.000Z

431

A population-based iterated greedy algorithm for the minimum weight vertex cover problem  

Science Journals Connector (OSTI)

Given an undirected, vertex-weighted graph, the goal of the minimum weight vertex cover problem is to find a subset of the vertices of the graph such that the subset is a vertex cover and the sum of the weights of its vertices is minimal. This problem is known to be NP-hard and no efficient algorithm is known to solve it to optimality. Therefore, most existing techniques are based on heuristics for providing approximate solutions in a reasonable computation time. Population-based search approaches have shown to be effective for solving a multitude of combinatorial optimization problems. Their advantage can be identified as their ability to find areas of the space containing high quality solutions. This paper proposes a simple and efficient population-based iterated greedy algorithm for tackling the minimum weight vertex cover problem. At each iteration, a population of solutions is established and refined using a fast randomized iterated greedy heuristic based on successive phases of destruction and reconstruction. An extensive experimental evaluation on a commonly used set of benchmark instances shows that our algorithm outperforms current state-of-the-art approaches.

Salim Bouamama; Christian Blum; Abdellah Boukerram

2012-01-01T23:59:59.000Z

432

Minimum Time Optimal Synthesis for a Control System on SU(2)  

E-Print Network [OSTI]

For the time optimal control on an invariant system on SU(2), with two independent controls and a bound on the norm of the control, the extremals of the maximum principle are explicit functions of time and the resulting differential equations can be explicitly integrated. We use this fact here to perform the optimal synthesis for these systems, i.e., find all optimal trajectories. As a consequence, we describe a simple method to find the minimum time control for every desired final condition. Although the Lie group SU(2) is three dimensional, optimal trajectories can be described in the unit disk of the complex plane. We find that a circular trajectory separates optimal trajectories that reach the boundary of the unit disk from the others. Inside this separatrix circle another trajectory (the critical trajectory) plays an important role in that all optimal trajectories end at an intersection with this curve. Our results are of interest to find the minimum time needed to achieve a given evolution of a two level quantum system.

Francesca Albertini; Domenico D'Alessandro

2014-07-28T23:59:59.000Z

433

Minimum separation distances for natural gas pipeline and boilers in the 300 area, Hanford Site  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) is proposing actions to reduce energy expenditures and improve energy system reliability at the 300 Area of the Hanford Site. These actions include replacing the centralized heating system with heating units for individual buildings or groups of buildings, constructing a new natural gas distribution system to provide a fuel source for many of these units, and constructing a central control building to operate and maintain the system. The individual heating units will include steam boilers that are to be housed in individual annex buildings located at some distance away from nearby 300 Area nuclear facilities. This analysis develops the basis for siting the package boilers and natural gas distribution systems to be used to supply steam to 300 Area nuclear facilities. The effects of four potential fire and explosion scenarios involving the boiler and natural gas pipeline were quantified to determine minimum separation distances that would reduce the risks to nearby nuclear facilities. The resulting minimum separation distances are shown in Table ES.1.

Daling, P.M.; Graham, T.M.

1997-08-01T23:59:59.000Z

434

Analysis of Minimum Efficiency Standards and Rebate Incentive Programs for Domestic Refrigerators in the Pacific Northwest.  

SciTech Connect (OSTI)

Refrigerator-freezers (R/Fs) and freezers (FRs) account for 16% of the electricity consumed in the residential sector of the Bonneville Power Administration (BPA) forecast region (Oregon, Washington, Idaho and Western Montana). After space and water heating, R/Fs are the largest residential electrical end-use. There is great potential for reducing electricity consumption in a cost-effective manner through the purchase and use of more energy-efficient R/Fs and FRs. For example, if every household in the BPA region had the best R/F model now mass-produced, the electricity savings would be about 5 billion kWh/yr, approximately the power supplied annually by 1000 MW of nuclear or coal-fired generating capacity. The Northwest Power Planning Council (NPPC) and BPA recognize the savings potential from efficient R/Fs and FRs as well as the barriers to their use. In the 1983 regional power plan, the Council directed BPA to develop and implement incentive and promotion programs for efficient appliances. The NPPC also called for the evaluation of minimum efficiency standards for appliances sold in the region. In response to this directive, the Office of Conservation in BPA funded an evaluation of both rebate incentive programs and minimum efficiency standards for R/Fs and FRs. The results are presented in this report.

Geller, Howard S.

1985-11-01T23:59:59.000Z

435

Event:GGKP-Green Growth: Addressing the Knowledge Gaps Day 2 | Open Energy  

Open Energy Info (EERE)

3 3 The Green Growth Knowledge Platform (GGKP) will hold its inaugural conference, "Green Growth: Addressing the Knowledge Gaps," January 12-13, 2012, in Mexico City Mexico. The conference aims to take stock of the current understanding of the economics of green growth; engage researchers and practitioners in an ongoing dialogue to increase understanding of how green growth approaches can be applied in the field; identify knowledge gaps and establish priorities for knowledge-building work and implementation; and launch follow-on efforts. The conference location will allow attendees to benefit from Mexico's experiences from taking a leading role internationally in advocating pathways to green development. Event Details Name GGKP-Green Growth: Addressing the Knowledge Gaps

436

Bridging the Gap: Helping Small Businesses With Big Ideas Develop New  

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

Bridging the Gap: Helping Small Businesses With Big Ideas Develop Bridging the Gap: Helping Small Businesses With Big Ideas Develop New Industries Bridging the Gap: Helping Small Businesses With Big Ideas Develop New Industries October 25, 2011 - 3:59pm Addthis Semprius, solar panels shown above, announced that it is building a factory in Henderson, NC to manufacture its high concentration photovoltaic (HCPV) solar modules and is expected to create more than 250 full-time jobs over the next five years. Semprius, solar panels shown above, announced that it is building a factory in Henderson, NC to manufacture its high concentration photovoltaic (HCPV) solar modules and is expected to create more than 250 full-time jobs over the next five years. Keri Fulton Public Affairs Specialist, Office of Public Affairs What does this mean for me?

437

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission  

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

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO Summary Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69-kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing

438

A Method to Improve Voltage Holding Across Vacuum Electrical Gaps to  

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

A Method to Improve Voltage Holding Across Vacuum Electrical Gaps to A Method to Improve Voltage Holding Across Vacuum Electrical Gaps to Improve the Performance and Reduce the Conditioning Time by Removing Bacteria, Fungi, and Other Microbial Organisms and Their Spores. -- . Inventor Larry Grisham. Disclosed is a method to potentially increase the performance of devices which employ electric field within a vacuum by increasing the magnitude of the electric field gradient which can be sustained, the reliability of the devices, and by reducing the conditioning time of devices such as charged particle accelerators when they are brought into operation. The disclosed method can be employed, for example, for devices requiring voltages across vacuum gaps, such as, but not limited to, charged particle accelerators, X-ray machines, vacuum tubes, and vacuum electrical breakers.

439

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission  

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

00: Granby Pumping Plant Switchyard-Windy Gap Substation 00: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO Summary Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69-kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing

440

DOE - Office of Legacy Management -- Crooks Gap AEC Ore Buying Station - WY  

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

Crooks Gap AEC Ore Buying Station - Crooks Gap AEC Ore Buying Station - WY 0-02 FUSRAP Considered Sites Site: Crooks Gap AEC Ore Buying Station (WY.0-02 ) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: The history of domestic uranium procurement under U.S. Atomic Energy Commission (AEC) contracts identifies a number of ore buying stations (sampling and storage sites) that were operated during the period late-1949 through the mid-1960s. During this period the AEC established ore-buying stations in new uranium producing areas where it appeared that ore production would be sufficient to support a uranium milling operation. The

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

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

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

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

442

Research in Energy Innovation: the Need to Fill Gaps and Manage Uncertainty  

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

Research in Energy Innovation: the Need to Fill Gaps and Manage Uncertainty Research in Energy Innovation: the Need to Fill Gaps and Manage Uncertainty Speaker(s): Laura Diaz Anadon Date: November 2, 2012 - 4:00pm Location: 90-3122 Seminar Host/Point of Contact: Ryan Wiser Innovation in energy technologies is necessary to confront profound challenges facing countries all over the world. Concerns regarding resource availability, the environment, health, national security, competitiveness, and access are driving government efforts to accelerate innovation in energy supply, end-use, and storage technologies. This talk will outline the tools available to governments to shape innovation in the energy sector and will discuss some of the most important knowledge gaps. It will then delve into recent research identifying the factors contributing to

443

Quantum adiabatic computation with a constant gap is not useful in one dimension  

SciTech Connect (OSTI)

We show that it is possible to use a classical computer to efficiently simulate the adiabatic evolution of a quantum system in one dimension with a constant spectral gap, starting the adiabatic evolution from a known initial product state. The proof relies on a recently proven area law for such systems, implying the existence of a good matrix product representation of the ground state, combined with an appropriate algorithm to update the matrix product state as the Hamiltonian is changed. This implies that adiabatic evolution with such Hamiltonians is not useful for universal quantum computation. Therefore, adiabatic algorithms which are useful for universal quantum computation either require a spectral gap tending to zero or need to be implemented in more than one dimension (we leave open the question of the computational power of adiabatic simulation with a constant gap in more than one dimension).

Hastings, Matthew [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

444

Gap-Inhomogeneity-Induced Electronic States in Superconducting Bi2Sr2CaCu2O8+delta  

SciTech Connect (OSTI)

In this Letter, we analyze, using scanning tunneling spectroscopy, the density of electronic states in nearly optimally doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} in zero magnetic field. Focusing on the superconducting gap, we find patches of what appear to be two different phases in a background of some average gap, one with a relatively small gap and sharp large coherence peaks and one characterized by a large gap with broad weak coherence peaks. We compare these spectra with calculations of the local density of states for a simple phenomenological model in which a 2{zeta}{sub 0} x 2{zeta}{sub 0} patch with an enhanced or suppressed d-wave gap amplitude is embedded in a region with a uniform average d-wave gap.

Fang, A.C.

2010-02-25T23:59:59.000Z

445

Superconductive Mini-Gap Undulators - A New Way To High Energy Photons: Latest News  

SciTech Connect (OSTI)

New applications of Synchroton Radiation (e.g. protein crystallography or FEL) require a high flux of high-brilliance and high-energy photons. This goal can be achieved by use of a superconducting small gap in-vacuo undulator in existing or future storage rings. The range of gap size, magnetic field and period length covered by ACCEL's actual design will be presented. The impact of upstream components in the storage ring and beam properties, respectively, on the layout of the Insertion Device, will be discussed. Emphasis will be put on new magnetic measurement data from the first full length device built.

Kubsky, S.; Doelling, D.; Geisler, A.; Hobl, A.; Klein, U.; Krischel, D. [ACCEL Instruments GmbH (Germany); Moser, H. O. [Singapore Synchrotron Light Source, National University of Singapore (Singapore); Rossmanith, R.; Chouhan, S. [Institute for Synchrotron Radiation, FZK (Germany)

2004-05-12T23:59:59.000Z

446

Atomic geometry of the 2×2 GaP(111) surface  

Science Journals Connector (OSTI)

Integral and fractional order beam low-energy electron-diffraction intensity-voltage (I-V) data have been taken on a bombardment-annealed GaP(111)-(2×2) surface. We have compared these data with calculated I-V curves using a dynamical multiple scattering theory and found very good agreement for the following model: One out of every four Ga surface atoms is missing and the surface Ga-P bilayer is almost coplanar. Surface and deeper layer atoms undergo vertical and lateral displacements from bulk positions. Similar results in other systems suggest that the vacancy model applies on the (111) face of many compound semiconductors.

G. Xu; W. Y. Hu; M. W. Puga; S. Y. Tong; J. L. Yeh; S. R. Wang; B. W. Lee

1985-12-15T23:59:59.000Z

447

Influence of discharge gap on the discharge stability in a short vacuum arc ion source  

SciTech Connect (OSTI)

The influence of the discharge gap between cathode and anode on the discharge stability in a short vacuum arc (SVA) ion source is presented in this paper. Planar cathode and cylindrical hollow anode made of titanium are investigated. There is a great need in present accelerator injection research for SVA source to produce the small deviation of the ion current beam. Current research shows that increasing the short discharge gap can reduce the level of ion current deviation and ion charge deviation from 29% and 31% to 15% and 17%, respectively. A microplasma plume generation mechanism in SVA and scanning electron microscopic results can be used to explain this interesting phenomenon.

Chen, L. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); Zhang, G. L.; Jin, D. Z.; Dai, J. Y. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Yang, L. [Institute of Nuclear Science and Technology, Louzhou University, Lanzhou, Gansu 730000 (China)

2012-02-15T23:59:59.000Z

448

Assessment of the Passivation Capabilities of Two Different Covalent Chemical Modifications on GaP(100)  

Science Journals Connector (OSTI)

With respect to toxicity, the UDA-functionalized GaP provided better passivation which was confirmed by less gallium leaching into water and saline solutions. ... Due to its promising characteristics for device fabrication, gallium arsenide (GaAs) has been extensively studied and the formation of self-assembled monolayers has been of interest. ... A general increase in the Ga/P ratio can be seen in the surfaces exposed to solutions compared to the clean surface which is attributed to the greater solubility of the phosphorus oxide (P2O5) compared to the gallium oxide (Ga2O3). ...

David Richards; Dmitry Zemlyanov; Albena Ivanisevic

2010-02-03T23:59:59.000Z

449

Immunomodulation by atorvastatin upregulates expression of gap junction proteins in coxsackievirus B3 (CVB3)-induced myocarditis  

Science Journals Connector (OSTI)

To investigate the effect of atorvastatin on myocardial expression of gap junction proteins, connexins (Cxs), during coxsackievirus B3 (CVB3)-induced myocarditis.

Alian Zhang; Huili Zhang; Shiyao Wu

2010-04-01T23:59:59.000Z

450

Multi-gap Resistive Plate Chambers as a Time-of-Flight System for the PHENIX Experiment  

SciTech Connect (OSTI)

In this project a Time-of-Flight detector based on multi-gap resistive plate chambers was built and installed for the PHENIX experiment at RHIC.

Velkovska, Julia [Vanderbilt University] [Vanderbilt University

2013-12-08T23:59:59.000Z

451

Fact #850: December 8, 2014 Automatic Transmissions have closed the Fuel Economy Gap with Manual Transmissions- Dataset  

Broader source: Energy.gov [DOE]

Excel file with dataset for Fact #850: December 8, 2014 Automatic Transmissions have closed the Fuel Economy Gap with Manual Transmissions

452

Improved parameterized algorithms for minimum link-length rectilinear spanning path problem  

Science Journals Connector (OSTI)

Abstract The Parameterized Minimum Link-Length Rectilinear Spanning Path problem in the d-dimensional Euclidean space R d (d-RSP), for a given set S of n points in R d and a positive integer k, is to find a rectilinear spanning path P with at most k line-segments that cover all points in S, where all line-segments in P are axis-parallel. In this paper, we study a constrained d-RSP problem (Constrained d-RSP problem) in which each line-segment l in the spanning path must cover all the points in S that share the same line with l. By applying the branch-and-search and dynamic programming techniques, a parameterized algorithm with running time O ? ( ( 1 + 1 + 4 ( d ? 1 ) 2 ) k ) is given for the Constrained d-RSP problem, which significantly improves the current best result O ? ( ( 0.74 d k ) k ) .

Qilong Feng; Jianxin Wang; Chao Xu; Jinyi Yao; Jianer Chen

2014-01-01T23:59:59.000Z

453

Achieving minimum impact insulation class 50 rating using resilient clip technology in lightweight construction.  

Science Journals Connector (OSTI)

Resilient clip technology is an alternative to resilient channel for supporting gypsum wallboard in fire rated wall and floor?ceiling assemblies. Lightweight wood frame construction presents challenges in meeting building code requirements for impact insulation class (IIC) and sound transmission class (STC) ratings in floor?ceiling assemblies. Through laboratory testing we were able to compare different floor?ceiling assemblies commonly used in multi?family construction. Two different structures were tested an 18 in. open web truss 24 in. o.c. and a 12 in. engineered joist (TJI) 24 in. o.c. Various finish floor coverings were used including ceramic tile vinyl and engineered wood. Structures achieved minimum IIC and STC 50 with and without 3/4 in. Gypsum concrete. Resilient rubber underlayment of varying thickness can further improve the IIC and STC ratings of the assembly as can adding a second layer of gypsum wallboard.

Wilson Byrick

2010-01-01T23:59:59.000Z

454

Possible Observation of Nuclear Reactor Neutrinos Near the Oscillation Absolute Minimum  

E-Print Network [OSTI]

After a summary of the basic three neutrino oscillation formalism we review briefly our present empirical knowledge of the oscillation parameters and conclude that the 2-neutrinos model is adequate to describe the survival probability of the electronic neutrino P(nue->nue). Then we proceed to the evaluation of P(nue->nue) relative to the antineutrinos emitted by the nuclear power stations presently in operation along the the Rhone valley. We assume that a detector has been installed in a existing cavity located under the Mont Ventoux at a depth equivalent to 1500 m of water. We show that such an experiment would provide the opportunity to observe neutrinos near the oscillation absolute minimum. We end by a rough estimate of the counting rate.

C. Bouchiat

2003-04-27T23:59:59.000Z

455

Photoelectron satellite spectrum in the region of the 3s Cooper minimum of argon  

Science Journals Connector (OSTI)

The 3s,3p satellite spectrum of argon has been studied with use of synchrotron radiation in the 40–70-eV energy range. In the region of the 3s Cooper minimum (42.5 eV±0.2), the integral intensity of the satellites is ten times larger than the 3s partial cross section. The angular asymmetry parameters have been measured as a function of the photoelectron energy for the 3s 2S,3p 2P final states as well as for the satellites. For the lowest photon energies it appears that the ? parameter values of the most intense satellites are strongly dependent on the total angular momentum of the final ionic state.

M. Y. Adam, P. Morin, and G. Wendin

1985-03-01T23:59:59.000Z

456

Resistance minimum observed at Landau level filling factor ?=1/2 in ultra high magnetic fields  

Science Journals Connector (OSTI)

We study the magnetotransport near Landau level filling factor ?=1/2 in a gated GaAs-Al0.3Ga0.7As square quantum well (width 35 nm) in magnetic field up to 45 T and in a temperature (T) range between 50 mK and 1.5 K. The longitudinal resistance at ?=1/2, Rxx(?=1/2), exhibits a steep valley that is flanked by a pair of rising resistance peaks in low T. The Rxx(?=1/2) shows nonmonotonous dependence on T, with a minimum resistance reached at T?0.5?K. The concomitant Hall resistance Rxy is not strictly linear with magnetic field and its slope shows a sharp cusp at ?=1/2, indicating a nonclassical Hall effect. The data are characteristic for ultra high field magnetotransport around ?=1/2 in thick, but single-layer, quantum wells.

Jian Zhang; R. R. Du; J. A. Simmons; J. L. Reno

2010-01-21T23:59:59.000Z

457

On the minimum dark matter mass testable by neutrinos from the Sun  

SciTech Connect (OSTI)

We discuss a limitation on extracting bounds on the scattering cross section of dark matter with nucleons, using neutrinos from the Sun. If the dark matter particle is sufficiently light (less than about 4 GeV), the effect of evaporation is not negligible and the capture process goes in equilibrium with the evaporation. In this regime, the flux of solar neutrinos of dark matter origin becomes independent of the scattering cross section and therefore no constraint can be placed on it. We find the minimum values of dark matter masses for which the scattering cross section on nucleons can be probed using neutrinos from the Sun. We also provide simple and accurate fitting functions for all the relevant processes of GeV-scale dark matter in the Sun.

Busoni, Giorgio; Simone, Andrea De; Huang, Wei-Chih, E-mail: giorgio.busoni@sissa.it, E-mail: andrea.desimone@sissa.it, E-mail: wei-chih.huang@sissa.it [SISSA and INFN, Sezione di Trieste, via Bonomea 265, I-34136 Trieste (Italy)

2013-07-01T23:59:59.000Z

458

Optimization of Operating Parameters for Minimum Mechanical Specific Energy in Drilling  

SciTech Connect (OSTI)

Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute the optimum drilling parameters that result in minimum MSE. The parameters that have been traditionally used to compute MSE are interdependent. Mathematical relationships between the parameters were established, and the conventional MSE equation was rewritten in terms of a single parameter, Weight on Bit, establishing a form that can be minimized mathematically. Once the optimum Weight on Bit was determined, the interdependent relationship that Weight on Bit has with Torque and Penetration per Revolution was used to determine optimum values for those parameters for a given drilling situation. The improved method was validated through laboratory experimentation and analysis of published data. Two rock types were subjected to four treatments each, and drilled in a controlled laboratory environment. The method was applied in each case, and the optimum parameters for minimum MSE were computed. The method demonstrated an accurate means to determine optimum drilling parameters of Weight on Bit, Torque, and Penetration per Revolution. A unique application of micro-cracking is also presented, which demonstrates that rock failure ahead of the bit is related to axial force more than to rotation speed.

Hamrick, Todd

2011-05-25T23:59:59.000Z

459

QUIET-TIME INTERPLANETARY {approx}2-20 keV SUPERHALO ELECTRONS AT SOLAR MINIMUM  

SciTech Connect (OSTI)

We present a statistical survey of {approx}2-20 keV superhalo electrons in the solar wind measured by the SupraThermal Electron instrument on board the two STEREO spacecraft during quiet-time periods from 2007 March through 2009 March at solar minimum. The observed superhalo electrons have a nearly isotropic angular distribution and a power-law spectrum, f{proportional_to}v{sup -{gamma}}, with {gamma} ranging from 5 to 8.7, with nearly half between 6.5 and 7.5, and an average index of 6.69 {+-} 0.90. The observed power-law spectrum varies significantly on a spatial scale of {approx}>0.1 AU and a temporal scale of {approx}>several days. The integrated density of quiet-time superhalo electrons at 2-20 keV ranges from {approx}10{sup -8} cm{sup -3} to 10{sup -6} cm{sup -3}, about 10{sup -9}-10{sup -6} of the solar wind density, and, as well as the power-law spectrum, shows no correlation with solar wind proton density, velocity, or temperature. The density of superhalo electrons appears to show a solar-cycle variation at solar minimum, while the power-law spectral index {gamma} has no solar-cycle variation. These quiet-time superhalo electrons are present even in the absence of any solar activity-e.g., active regions, flares or microflares, type III radio bursts, etc.-suggesting that they may be accelerated by processes such as resonant wave-particle interactions in the interplanetary medium, or possibly by nonthermal processes related to the acceleration of the solar wind such as nanoflares, or by acceleration at the CIR forward shocks.

Wang, Linghua [Department of Geophysics, Peking University, 100871 Beijing (China); Lin, Robert P.; Salem, Chadi; Pulupa, Marc; Larson, Davin E.; Luhmann, Janet G. [Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450 (United States); Yoon, Peter H., E-mail: wanglhwang@gmail.com [School of Space Research, Kyung Hee University, Yongin, Gyeonggi (Korea, Republic of)

2012-07-01T23:59:59.000Z

460

Observed Minimum Illuminance Threshold for Night Market Vendors in Kenya who use LED Lamps  

SciTech Connect (OSTI)

Creation of light for work, socializing, and general illumination is a fundamental application of technology around the world. For those who lack access to electricity, an emerging and diverse range of LED based lighting products hold promise for replacing and/or augmenting their current fuel-based lighting sources that are costly and dirty. Along with analysis of environmental factors, economic models for total cost-ofownership of LED lighting products are an important tool for studying the impacts of these products as they emerge in markets of developing countries. One important metric in those models is the minimum illuminance demanded by end-users for a given task before recharging the lamp or replacing batteries. It impacts the lighting service cost per unit time if charging is done with purchased electricity, batteries, or charging services. The concept is illustrated in figure 1: LED lighting products are generally brightest immediately after the battery is charged or replaced and the illuminance degrades as the battery is discharged. When a minimum threshold level of illuminance is reached, the operational time for the battery charge cycle is over. The cost to recharge depends on the method utilized; these include charging at a shop at a fixed price per charge, charging on personal grid connections, using solar chargers, and purchasing dry cell batteries. This Research Note reports on the observed"charge-triggering" illuminance level threshold for night market vendors who use LED lighting products to provide general and task oriented illumination. All the study participants charged with AC power, either at a fixed-price charge shop or with electricity at their home.

Johnstone, Peter; Jacobson, Arne; Mills, Evan; Radecsky, Kristen

2009-03-21T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Closing the Gap to the Capacity of APSK: Constellation Shaping and Degree Distributions  

E-Print Network [OSTI]

7 / 21 #12;Constellation Shaping Constellation Shaping The energy efficiency can be improved.5 1 1.5 2 Figure : Uniform 32APSK vs. shaped 32APSK. Both constellations have the same energy. -10 0Closing the Gap to the Capacity of APSK: Constellation Shaping and Degree Distributions Matthew C

Valenti, Matthew C.

462

Healing of Adsorbed Polymer Layers in a Narrow Gap Following Removal by  

E-Print Network [OSTI]

Healing of Adsorbed Polymer Layers in a Narrow Gap Following Removal by Shear Uri Raviv1 Mw = 37 kg/mol adsorbed onto smooth, curved solid (mica) surfaces across the good solvent toluene similar to those measured in earlier studies between adsorbed PEO layers. The shearing motion causes

Klein, Jacob

463

Bridging the Gaps between eTransforming SMEs and SME -ICT Providers  

E-Print Network [OSTI]

of what eTransforming SMEs need based on their current technology and future business requirements. Keywords: SMEs, eTransformation, Information and Communication Technology, ICT providers 1 IntroductionBridging the Gaps between eTransforming SMEs and SME - ICT Providers Ana Hol1 and Athula Ginige1

Boyer, Edmond

464

Lift-and-Project Integrality Gaps for the Traveling Salesperson Problem  

E-Print Network [OSTI]

We study the lift-and-project procedures of Lov{\\'a}sz-Schrijver and Sherali-Adams applied to the standard linear programming relaxation of the traveling salesperson problem with triangle inequality. For the asymmetric TSP tour problem, Charikar, Goemans, and Karloff (FOCS 2004) proved that the integrality gap of the standard relaxation is at least 2. We prove that after one round of the Lov{\\'a}sz-Schrijver or Sherali-Adams procedures, the integrality gap of the asymmetric TSP tour problem is at least 3/2, with a small caveat on which version of the standard relaxation is used. For the symmetric TSP tour problem, the integrality gap of the standard relaxation is known to be at least 4/3, and Cheung (SIOPT 2005) proved that it remains at least 4/3 after $o(n)$ rounds of the Lov{\\'a}sz-Schrijver procedure, where $n$ is the number of nodes. For the symmetric TSP path problem, the integrality gap of the standard relaxation is known to be at least 3/2, and we prove that it remains at least 3/2 after $o(n)$ rounds...

Watson, Thomas

2011-01-01T23:59:59.000Z

465

Cognitive, Non-Cognitive Skills and Gender Wage Gaps: Evidence from Linked  

E-Print Network [OSTI]

Cognitive, Non-Cognitive Skills and Gender Wage Gaps: Evidence from Linked Employer-Employee Data of measures of cognitive and non-cognitive skills. Our results show that personality traits have little for wages of female employees, and in certain parts of the wage distribution. Cognitive skills as measured

Bandyopadhyay, Antar

466

Bridging the Gap between the Business Processes and the Service Oriented Architecture  

E-Print Network [OSTI]

Bridging the Gap between the Business Processes and the Service Oriented Architecture Karim Dahman computerized software solutions. The Service Oriented Architecture (SOA [2]) has emerged as a new paradigm]. However, as UML is neither fully service-oriented, nor business process-centered, it needs to address

Paris-Sud XI, Université de

467

Landau-Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer  

E-Print Network [OSTI]

Landau-Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer it is not practical to solve the time-dependent Schr"odinger equation d* *irectly, the time-dependent Born-Oppenheimer of the masses of the nuclei. In the standard time-dependent Born-Oppenheimer approximation, the electrons

Joye, Alain

468

LandauZener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer  

E-Print Network [OSTI]

Landau­Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer­dependent Born­Oppenheimer approximation is a principal tool for studying molecular dynamics. This approximation to the average of the masses of the nuclei. In the standard time­dependent Born­Oppenheimer approximation

Hagedorn, George A.

469

A two-dimensional electrodynamical outer gap model for -ray pulsars: -ray spectrum  

Science Journals Connector (OSTI)

......abscissa represents the arc length with the origin...the field-aligned electric field becomes strong...gap by the positive electric field, the positive electric field will be held...if the effect of the discharge of the pairs is taken......

J. Takata; S. Shibata; K. Hirotani; H-K. Chang

470

Uncertainty of Oil Field GHG Emissions Resulting from Information Gaps: A Monte Carlo Approach  

Science Journals Connector (OSTI)

Uncertainty of Oil Field GHG Emissions Resulting from Information Gaps: A Monte Carlo Approach ... Regulations on greenhouse gas (GHG) emissions from liquid fuel production generally work with incomplete data about oil production operations. ... We study the effect of incomplete information on estimates of GHG emissions from oil production operations. ...

Kourosh Vafi; Adam R. Brandt

2014-08-10T23:59:59.000Z

471

The political gender gap: Gender bias in facial inferences that predict voting behavior  

E-Print Network [OSTI]

1 The political gender gap: Gender bias in facial inferences that predict voting behavior Joan Y human history, a disproportionate degree of political power around the world has been held by men. Even in democracies where the opportunity to serve in top political positions is available to any individual elected

Chiao, Joan Y.

472

Optical gain from the direct gap transition of Ge-on-Si at room temperature  

E-Print Network [OSTI]

We report direct band gap optical gain of tensile strained n+ epitaxial Ge-on-Si at room temperature, which confirms that band-engineered Ge-on-Si is a promising gain medium for monolithic optical amplifiers and lasers on Si.

Liu, Jifeng

473

Arthropod abundance and seasonal bird use of bottomland forest harvest gaps.  

SciTech Connect (OSTI)

We investigated the influence of arthropod abundance and vegetation structure on shifts in avian use of canopy gap, gap edge, and surrounding forest understory in a bottomland hardwood forest in the Upper Coastal Plain of South Carolina. We compared captures of foliage-gleaning birds among locations during four periods (spring migration, breeding, post-breeding, and fall migration). Foliage arthropod densities were greatest in the forest understory in all four seasons, but understory vegetation density was greatest in gaps. Foliage-gleaning bird abundance was positively associated with foliage-dwelling arthropods during the breeding (F = 18.5, P < 0.001) and post-breeding periods (F = 9.4, P = 0.004), and negatively associated with foliage-dwelling arthropods during fall migration (F = 5.4, P = 0.03). Relationships between birds and arthropods were inconsistent, but the arthropod prey base seemed to be least important during migratory periods. Conversely, bird captures were positively correlated with understory vegetation density during all four periods (P < 0.001). Our study suggests high bird abundance associated with canopy gaps during the non-breeding period resulted less from high arthropod food resource availability than from complex understory and midstory vegetation structure.

Moorman, Christopher, E.; Bowen, Liessa T.; Kilgo, John, C.; Hanula, James, L.; Horn, Scott; Ulyshen, Michael, D.

2012-03-01T23:59:59.000Z

474

Water development for hydroelectric in southeastern Anatolia project (GAP) in Turkey  

Science Journals Connector (OSTI)

Southeastern Anatolia Project (GAP) region in Turkey is rich in water for irrigation and hydroelectric power. The Euphrates and Tigris rivers represent over 28% of the nation’s water supply by rivers, and the economically irrigable areas in the region make up 20% of those for the entry country. On the other hand, 85% of the total hydro capacity in operation has been developed by DSI, corresponding to 9931 MW (49 hydro plants) and 35,795 GWh/year respectively. The largest and most comprehensive regional development project ever implemented by DSI in Turkey is “The Southeast Anatolian (GAP) Project”, which is located in the region of Southeast Anatolia on the Euprates and Tigris rivers and their tributaries, which originate in Turkey. The energy potential of the Tigris and Euphrates is estimated as 12,000 GWh and 35,000 GWh, respectively. These two rivers constitute 10% and 30% of the total hydroelectric energy potential. The GAP region will be an important electric power producer with 1000 MW installed capacity from the Karakaya dam, 2400 MW installed capacity from the Atatürk dam and 1360 MW installed capacity from the Keban dam. The GAP region has a 22% share of the country’s total hydroelectric potential, with plans for 22 dams and 19 hydroelectric power plants. Once completed, 27 billion kWh of electricity will be generated annually.

Ibrahim Yuksel

2012-01-01T23:59:59.000Z

475

Sub-nanometer Displacement Sensing for the Nanogate A Tunable Nanometer Gap  

E-Print Network [OSTI]

for the Nanogate including the sensor design, fabrica- Metal layers to prevent anodic bond C Tunable nanometer gap Deflection Fluid inlet Bottom electrode Anodic Si-Pyrex bond Figure 1. Schematic Cross sectionµm tall and 2.25mm in diameter. This ring is anodically bonded to the Pyrex glass diaphragm to form

476

Summary of Gaps and Barriers for Implementing Residential Building Energy Efficiency Strategies  

Broader source: Energy.gov [DOE]

This report presents the key gaps and barriers to implementing residential energy efficiency strategies in the U.S. market, as identified in sessions at the U.S. Department of Energy's Building America 2010 Residential Energy Efficiency Meeting held in Denver, Colorado, on July 20-22, 2010.

477

Another Hanukkah Miracle: The Gaps Between Consecutive Christmas-in-Hanukkah Years is ALWAYS a Fibonacci *  

E-Print Network [OSTI]

. The last year is 8473, where we would light the first candle on Christmas Eve* *. After that Hanukkah Another Hanukkah Miracle: The Gaps Between Consecutive Christmas In fond memory of Marvin Isadore Knopp (1933-2011) z"l* *, who left us this Christmas Eve

Zeilberger, Doron

478

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes  

E-Print Network [OSTI]

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes L Available online 3 June 2013 Keywords: Magnetic insulation Vacuum electrical breakdown Bacteria-induced electrical breakdown Accelerator a b s t r a c t An experimental program to elucidate the physical causes

Gilson, Erik

479

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes  

E-Print Network [OSTI]

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes L Keywords: Magnetic insulation Vacuum electrical breakdown Bacteria-induced electrical breakdown Accelerator a b s t r a c t An experimental program to elucidate the physical causes of electrical breakdown

Gilson, Erik

480

High-efficient solar power systems based on thermionic converter with small gap  

SciTech Connect (OSTI)

Various configurations of power systems based on thermionic converter with small interelectrode gap have been considered. The results of studies of systems energy characteristics are presented. The high efficiency and perspectivety of such systems for different applications have been shown. {copyright} {ital 1996 American Institute of Physics.}

Nikolaev, Y.V.; Eryomin, S.A.; Kalmykov, S.S.; Karpechenko, Y.D.; Kucherov, R.Y.; Lapochkin, N.V. [Research Institute of Scientific Industrial Association ``Lutch``, 142100, Podolsk, Moscow Region (Russian Federation)

1996-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "minimum gap runner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Photoluminescence-based measurements of the energy gap and diffusion length of Zn3P2  

E-Print Network [OSTI]

or liquid contacts,5 with p-Zn3P2/Mg Schottky diodes having exhibited 6% solar energy-conversion efficiencyPhotoluminescence-based measurements of the energy gap and diffusion length of Zn3P2 Gregory M ellipsometric measurements. Bulk minority carrier lifetimes of 20 ns were observed by time

Kimball, Gregory

482

Daily Thermal Predictions of the AGR-1 Experiment with Gas Gaps Varying with Time  

SciTech Connect (OSTI)

A new daily as-run thermal analysis was performed at the Idaho National Laboratory on the Advanced Gas Reactor (AGR) test experiment number one at the Advanced Test Reactor (ATR). This thermal analysis incorporates gas gaps changing with time during the irradiation experiment. The purpose of this analysis was to calculate the daily average temperatures of each compact to compare with experimental results. Post irradiation examination (PIE) measurements of the graphite holder and fuel compacts showed the gas gaps varying from the beginning of life. The control temperature gas gap and the fuel compact – graphite holder gas gaps were linearly changed from the original fabrication dimensions, to the end of irradiation measurements. A steady-state thermal analysis was performed for each daily calculation. These new thermal predictions more closely match the experimental data taken during the experiment than previous analyses. Results are presented comparing normalized compact average temperatures to normalized log(R/B) Kr-85m. The R/B term is the measured release rate divided by the predicted birth rate for the isotope Kr-85m. Correlations between these two normalized values are presented.

Grant Hawkes; James Sterbentz; John Maki; Binh Pham

2012-06-01T23:59:59.000Z

483

Multiple Equilibria and Hysteresis of Two Unequal-Transport Western Boundary Currents Colliding at a Gap  

Science Journals Connector (OSTI)

The nonlinear collision of two western boundary currents (WBCs) of Munk thickness LM colliding near a gap of width 2a is studied using a 1.5-layer, reduced-gravity, quasigeostrophic ocean model. The work is a continuation of our recent study on ...

Zheng Wang; Dongliang Yuan

2014-07-01T23:59:59.000Z

484

PHYSICAL REVIEW B 85, 115431 (2012) Energy gaps in graphene nanomeshes  

E-Print Network [OSTI]

PHYSICAL REVIEW B 85, 115431 (2012) Energy gaps in graphene nanomeshes William Oswald and Zhigang opening and electronic structures of graphene nanomeshes (GNMs), the defected graphene containing a high, 71.15.Mb I. INTRODUCTION Graphene, a two-dimensional (2D) single-layer honeycomb structure of carbon

Wu, Zhigang

485

Current transport, gate dielectrics and band gap engineering in graphene devices  

E-Print Network [OSTI]

Current transport, gate dielectrics and band gap engineering in graphene devices Wenjuan Zhu In this work, we studied current transport in mono-, bi- and tri-layer graphene. We find that both of the electrical field of the substrate surface polar phonons in bi-layer/tri-layer graphenes. We also find

Perebeinos, Vasili

486

Metallic photonic-band-gap filament architectures for optimized incandescent lighting Sajeev John and Rongzhou Wang  

E-Print Network [OSTI]

Metallic photonic-band-gap filament architectures for optimized incandescent lighting Sajeev John occur 3,4 . Tra- ditionally incandescent lighting filaments, despite being driven from equilibrium the blackbody spectrum. This suggests the pos- sibility of higher efficiency incandescent lighting, through

John, Sajeev

487

Bridging the Gap: Automated Steady Scaffoldings for 3D Printing Jrmie Dumas  

E-Print Network [OSTI]

Bridging the Gap: Automated Steady Scaffoldings for 3D Printing J�r�mie Dumas Universit� de Figure 1: The upper leg of the Poppy robot (www.poppy-project.org) cannot be 3D printed on low cost FDM usage. Abstract Fused Filament Fabrication (FFF) is the process of 3D printing ob- jects from melted

Lévy, Bruno

488

Glass Transition and the Coulomb Gap in Electron Glasses M. Muller and L. B. Ioffe  

E-Print Network [OSTI]

Glass Transition and the Coulomb Gap in Electron Glasses M. Mu¨ller and L. B. Ioffe Department December 2004) We establish the connection between the presence of a glass phase and the appearance correlations in a systematic way, we show that in the case of strong disorder a continuous glass transition

Müller, Markus

489

Applying Single-Layer Shallow-Water Theory to Gap Flows in the Brenner Pass Region  

E-Print Network [OSTI]

. pressure mean deviation of pot. temperature mean wind speed cross-section of topography shallow foehn jump;Doppler wind lidar FOEHN 30 Oct 1999 20 Oct 1999 gap flow ambient flow ridge lidar location LIDAR NOAA InnsbruckBrenner wind speed #12;SWM simulations FOEHN valley exit Ellboegen Tienzens Brenner Steinach/ Gries

Gohm, Alexander

490

Emergence and evolution of learning gaps across countries: Linked panel evidence from Ethiopia, India, Peru and  

E-Print Network [OSTI]

on children in middle or secondary school, raise two important questions. First, at what age do gaps between, prior to school enrolment, with children in Vietnam at the upper end, children in Ethiopia at the lower, and with Peru and India in between. Differences between country samples grow in magnitude at later ages

Bandyopadhyay, Antar

491

Size effect on the electronic and optical band gap of CdSe QD  

SciTech Connect (OSTI)

Present paper deals with a critical and comprehensive analysis of the dependence of photo emission (PE) electronic band gap and optical absorption (OA) excitonic band gap on the size of CdSe QD, via connecting it with excitonic absorbance wavelength. Excitonic absorbance wavelength is determined through an empirical fit of established experimental evidences. Effective excitonic charge and Bohr radius is determined as a function of size. Increase in size of the CdSe QD results in greater Bohr radius and smaller effective excitonic charge. Excitonic binding energy as a degree of size of QD is also calculated which further relates with the difference in PE electronic and OA optical band gaps. It is also shown that with increase in size of CdSe QD, the excitonic binding energy decreases which consequently increases differences in two band gaps. Our results are very well comparable with the established results. Explanation for the origin of the unusual optical properties of CdSe QD has been also discussed.

Sisodia, Namita, E-mail: namitasisodiya@gmail.com [Department of Physics, Holkar Science College, Indore-45200 (India)

2014-04-24T23:59:59.000Z

492

Coupling of nitrogen-vacancy centers in diamond to a GaP waveguide  

E-Print Network [OSTI]

The optical coupling of guided modes in a GaP waveguide to nitrogen-vacancy (NV) centers in diamond is demonstrated. The electric field penetration into diamond and the loss of the guided mode are measured. The results indicate that the GaP-diamond system could be useful for realizing coupled microcavity-NV devices for quantum information processing in diamond.

K. -M. C. Fu; C. Santori; P. E. Barclay; I. Aharonovich; S. Prawer; N. Meyer; A. M. Holm; R. G. Beausoleil

2008-11-03T23:59:59.000Z

493

On the entropy devil’s staircase in a family of gap-tent maps  

E-Print Network [OSTI]

To analyze the trade-off between channel capacity and noise-resistance in designing dynamical systems to pursue the idea of communications with chaos, we perform a measure theoretic analysis the topological entropy function of a “gap-tent map ” whose invariant set is an unstable chaotic saddle of the tent map. Our model system, the “gap-tent map ” is a family of tent maps with a symmetric gap, which mimics the presence of noise in physical realizations of chaotic systems, and for this model, we can perform many calculations in closed form. We demonstrate that the dependence of the topological entropy on the size of the gap has a structure of the devil’s staircase. By integrating over a fractal measure, we obtain analytical, piece-wise differentiable approximations of this dependence. Applying concepts of the kneading theory we find the position and the values of the entropy for all leading entropy plateaus. Similar properties hold also for the dependence of the fractal dimension of the invariant set and the escape rate.

Karol Zyczkowski; Erik M. Bollt

1999-01-01T23:59:59.000Z

494

Forward Raman compression via photonic band gap in metals or warm dense matter  

SciTech Connect (OSTI)

The group velocity of a light pulse in photonic band gap material could considerably deviate from the speed of light in vacuum. A forward stoke and a pump pulse of different speeds would enable the Raman compression in metals or the warm dense matter. A small window of the parameter regime, where the compression is feasible via the forward Raman scattering, is identified.

Son, S. [18 Caleb Lane, Princeton, New Jersey 08540 (United States); Moon, Sung Joon [Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544 (United States)

2011-08-15T23:59:59.000Z

495

Integrality Gap and Approximation Algorithm for the Multi-survivable Network Design Problem  

E-Print Network [OSTI]

a complete graph with non-negative edge costs and non-negative integer vertex connectivity requirements, we network problem) is as follows: Let G = (V, E) be a complete graph with non-negative edge costs c RE consider the problem of find- ing a minimum cost subgraph that has at least rij edge-disjoint paths between

Boyd, Sylvia

496

Rapidity Gaps Between Jets in PHP DIS 2006 , April 22, 2006 -1Patrick Ryan, Univ. of Wisconsin Patrick Ryan  

E-Print Network [OSTI]

Rapidity Gaps Between Jets in PHP DIS 2006 , April 22, 2006 - 1Patrick Ryan, Univ. of Wisconsin in PHP DIS 2006 , April 22, 2006 - 2Patrick Ryan, Univ. of Wisconsin Hard Diffractive Photoproduction - = Subject of this analysis #12;Rapidity Gaps Between Jets in PHP DIS 2006 , April 22, 2006 - 3Patrick Ryan

497

The novel Rho-GTPase activating gene MEGAP/ srGAP3 has a putative role in severe mental retardation  

Science Journals Connector (OSTI)

...4 of MEGAP/srGAP3, as shown in the middle part of the scheme. Exons are indicated here as red boxes. Markers D3S2405 and SHGC-57635 (white boxes) are located within intronic sequences of MEGAP/srGAP3. Marker IB772 (white box) resides on the X...

Volker Endris; Birgit Wogatzky; Uwe Leimer; Dusan Bartsch; Malgorzata Zatyka; Farida Latif; Eamonn R. Maher; Gholamali Tariverdian; Stefan Kirsch; Dieter Karch; Gudrun A. Rappold

2002-01-01T23:59:59.000Z

498

Invasive interactions of Monomorium minimum (Hymenoptera: Formicidae) and Solenopsis invicta (Hymenoptera: Formicidae) infected with Thelohania solenopsae (Microsporida: Thelohaniidae)  

E-Print Network [OSTI]

does not cause the formation of a pustule and no medical reactions have been recorded in humans (Thompson 1990). Monomorium minimum workers are much smaller than RIFA workers; 1.5 mm in length versus 2-6 mm in length (Thompson 1990). The research... nests (f = 0.022) and enter RIFA nests (f = 0.031) of at least one RIFA colony size. There was no significant difference in the ability of M. minimum to tunnel (f = 0.193), enter the RIFA box (f = 0.228), and get within 2 cm of the RIFA nest (f = 0...

Keck, Molly Elizabeth

2006-08-16T23:59:59.000Z

499

DOUBLE-DETONATION SUB-CHANDRASEKHAR SUPERNOVAE: SYNTHETIC OBSERVABLES FOR MINIMUM HELIUM SHELL MASS MODELS  

SciTech Connect (OSTI)

In the double-detonation scenario for Type Ia supernovae, it is suggested that a detonation initiates in a shell of helium-rich material accreted from a companion star by a sub-Chandrasekhar-mass white dwarf. This shell detonation drives a shock front into the carbon-oxygen white dwarf that triggers a secondary detonation in the core. The core detonation results in a complete disruption of the white dwarf. Earlier studies concluded that this scenario has difficulties in accounting for the observed properties of Type Ia supernovae since the explosion ejecta are surrounded by the products of explosive helium burning in the shell. Recently, however, it was proposed that detonations might be possible for much less massive helium shells than previously assumed (Bildsten et al.). Moreover, it was shown that even detonations of these minimum helium shell masses robustly trigger detonations of the carbon-oxygen core (Fink et al.). Therefore, it is possible that the impact of the helium layer on observables is less than previously thought. Here, we present time-dependent multi-wavelength radiative transfer calculations for models with minimum helium shell mass and derive synthetic observables for both the optical and {gamma}-ray spectral regions. These differ strongly from those found in earlier simulations of sub-Chandrasekhar-mass explosions in which more massive helium shells were considered. Our models predict light curves that cover both the range of brightnesses and the rise and decline times of observed Type Ia supernovae. However, their colors and spectra do not match the observations. In particular, their B - V colors are generally too red. We show that this discrepancy is mainly due to the composition of the burning products of the helium shell of the Fink et al. models which contain significant amounts of titanium and chromium. Using a toy model, we also show that the burning products of the helium shell depend crucially on its initial composition. This leads us to conclude that good agreement between sub-Chandrasekhar-mass explosions and observed Type Ia supernovae may still be feasible but further study of the shell properties is required.

Kromer, M.; Sim, S. A.; Fink, M.; Roepke, F. K.; Seitenzahl, I. R.; Hillebrandt, W., E-mail: mkromer@mpa-garching.mpg.d [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Strasse 1, D-85748 Garching (Germany)

2010-08-20T23:59:59.000Z

500

A Bi-Directional DC-DC Converter with Minimum Energy Storage Elements Leon M. Tolbert1,3  

E-Print Network [OSTI]

uses an internal combustion diesel engine to drive a radial-gap permanent magnet alternator at variable frequency, variable voltage produced by the permanent magnet alternator is diode-rectified to a high voltage synchronous machines are presently used to convert the mechanical power of the rotating shaft into three

Tolbert, Leon M.