Sample records for technology possibility curves

  1. Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.

    2007-01-01T23:59:59.000Z

    including issues of technology and cost un- certainties, areon NO x Control Technologies and Cost Effectiveness forand other factors on technology cost trends (hence, the

  2. The Possibility of Curved Spacetime, Black Holes, and Big Bang is Less than One Billionth

    E-Print Network [OSTI]

    Jin He

    2007-10-20T23:59:59.000Z

    Gravity whose nature is fundamental to the understanding of solar system, galaxies and the structure and evolution of the Universe, is theorized by the assumption of curved spacetime, according to Einstein`s general theory of relativity (EGR). Particles move on curved spacetime along straight lines (geodesics). In the last year, I proposed the mirrored version of EGR, the flat-spacetime general relativity (FGR), in which particles move along curved lines on flat spacetime. This puts gravitational study back to the traditional Lagrangian formulation. In fact, all claimed accurate verification of general relativity is the verification of FGR, because people when confronting GR to observational data, calculate time, distance, or angle by directly using the coordinates in Schwarzschild solution or in post Newtonian formulation. For example, people calculate the angles by directly using the coordinate $\\phi$. However, only when spacetime is flat does there exists one coordinate system which has direct meaning of time, distance, angle, and vice verse. This is the famous Riemann theorem. Therefore, the more claims are made that classical tests of general relativity fit data with great accuracy, the more falsified is the curved-spacetime assumption. People made three such specious claims to EGR as collected in the present paper. However, FGR predicts observationally verified results consistently for solar system, galaxies, and the universe on the whole. I show that the possibility of curved spacetime, black holes, and big bang is less than one billionth. An experiment is proposed whose results will completely decide the fate of curved spacetime assumption. with the original article `Einstein`s Geometrization vs. Holonomic Cancellation of Gravity via Spatial Coordinate-rescale` attached.

  3. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R

    2007-01-01T23:59:59.000Z

    Inc. Experience curves for power plant emission controlfor Coal-Fired Utility Power Plants, U.S. Environmental1/2, 2004 Experience curves for power plant emission control

  4. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R

    2007-01-01T23:59:59.000Z

    for carbon capture and sequestration technologies assumingin carbon capture and sequestration technologies applicable

  5. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S

    2007-01-01T23:59:59.000Z

    cost of U.S. fossil–steam power plants from 1981 to 1997curve: the case of steam-electric power plant design andpower plant; Learning-by-doing; Technological change; Steam

  6. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R

    2007-01-01T23:59:59.000Z

    of cumulative installed capacity of each technology. We1 C umulative installed capacity of wet lime/limestone FGDFigure 2 C umulative installed capacity of SCR systems on

  7. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A

    2007-01-01T23:59:59.000Z

    reduction in NO x emissions from coal-fired power plants tocombustion of coal, emissions from coal-fired power plantsemission control technologies now required on all new coal-fired power

  8. DETERMINATION OF THE SWELL-STRESS CURVE OF AN EXPANSIVE SOIL USING CENTRIFUGE TECHNOLOGY

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    DETERMINATION OF THE SWELL-STRESS CURVE OF AN EXPANSIVE SOIL USING CENTRIFUGE TECHNOLOGY project was conducted on the use of centrifuge technology to characterize the expansive properties of a soil sample in the centrifuge. This paper focuses on the analysis of testing results, specifically how

  9. Learning Curves For Energy Technology: A Critical Assessment

    E-Print Network [OSTI]

    Jamasb, Tooraj; Kohler, Jonathan

    restrictions over time (e.g. nuclear, and coal if flue gas desulphurization costs are not separated), and for price-based (as opposed to cost-based) learning rates in some periods reflecting aspects of market behavior. For many technologies, learning rates...

  10. Technology Makes Solid State Multi-Gas Emission Monitoring Possible 

    E-Print Network [OSTI]

    Nelson, R. L.

    1986-01-01T23:59:59.000Z

    A recent breakthrough in the growth of excellent quality single crystal thallium arsenic selenide (TAS) on a production basis has made it possible to buLld an electronically controlled acousto optic tunable filter (AOTF) capable of operating...

  11. Technology Makes Solid State Multi-Gas Emission Monitoring Possible

    E-Print Network [OSTI]

    Nelson, R. L.

    single crystal thallium arsenic se1enide (TAS) on a production basis has made it possible to buLld an electronically controlled acousto ,-,ptie tunable filter (AOTF) capable of operating in the infrared. Such a filter with integral .11 t rasonic... trifnsduce r can be used in place of Inechanica1 filter wheels, spinning gas cells, moving mirrors, diffraction gratings and mechanical light choppers. The TAS AOTF produces an electronically controllable narrow banel infrared filter capable of being...

  12. A simple interpretation of the growth of scientific/technological research impact leading to hype-type evolution curves

    E-Print Network [OSTI]

    Campani, Marco

    2014-01-01T23:59:59.000Z

    The empirical and theoretical justification of Gartner hype curves is a very relevant open question in the field of Technological Life Cycle analysis. The scope of the present paper is to introduce a simple model describing the growth of scientific/technological research impact, in the specific case where science is the main source of a new idea driving a technological development, leading to hype-type evolution curves. The main idea of the model is that, in a first stage, the growth of the scientific interest of a new specific field (as can be measured by publication numbers) basically follows the classical logistic growth curve. At a second stage, starting at a later trigger time, the technological development based on that scientific idea (as can be measured by patent deposits) can be described as the integral (in a mathematical sense) of the first curve, since technology is based on the overall accumulated scientific knowledge. The model is tested through a bibliometric analysis of the publication and pat...

  13. To appear in, Proc. of NAS Workshop on Assessing the Economic Impacts of Climate Change, April 2010, and special issue of, Energy Economics Uncertainties in Technology Experience Curves for

    E-Print Network [OSTI]

    , and special issue of, Energy Economics Uncertainties in Technology Experience Curves for Energy curves) relating reductions in the unit cost of energy and environmental technologies to their cumulative: Experience curve, learning curve, learning-by-doing, uncertainties, endogenous technological change, energy

  14. A cost modeling approach using learning curves to study the evolution of technology

    E-Print Network [OSTI]

    Kar, Ashish M. (Ashish Mohan)

    2007-01-01T23:59:59.000Z

    The present work looks into the concept of learning curves to decipher the underlying mechanism in cost evolution. The concept is not new and has been used since last seven decades to understand cost walk down in various ...

  15. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.

    2007-01-01T23:59:59.000Z

    Advances in boiler and steam turbine technology, materialschange; Steam plant; Steam turbine; Electricity 1.housed ?ve 10,000 kW steam turbines and typically required

  16. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S

    2007-01-01T23:59:59.000Z

    Advances in boiler and steam turbine technology, materialshoused ?ve 10,000 kW steam turbines and typically requiredchange; Steam plant; Steam turbine; Electricity 1.

  17. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.

    2007-01-01T23:59:59.000Z

    change; Steam plant; Steam turbine; Electricity 1.housed ?ve 10,000 kW steam turbines and typically requiredAdvances in boiler and steam turbine technology, materials

  18. Learning curves and engineering assessment of emerging energy technologies: onshore wind 

    E-Print Network [OSTI]

    Mukora, Audrey Etheline

    2014-06-30T23:59:59.000Z

    Sustainable energy systems require deployment of new technologies to help tackle the challenges of climate change and ensuring energy supplies. Future sources of energy are less economically competitive than conventional ...

  19. Treatment technologies for hazardous ashes generated from possible incineration of navy waste. Technical note

    SciTech Connect (OSTI)

    Torres, T.

    1990-10-01T23:59:59.000Z

    The Navy recognizes that thermal treatment of Navy hazardous wastes (HW) should, under the terms of the Resource Conservation and Recovery Act of 1976, be avoided. Combustion waste disposal may nonetheless become unavoidable in certain cases, even after all possible process enhancements that avoid HW production are implemented. Even then, some toxic constituents that may be present in the waste will not be destroyed by incineration and will persist in the ash residue produced by incineration. Such incinerator ashes will have to be disposed of in HW landfills. The Navy is thus evaluating methods of treatment of such ash to remove or immobilize the toxic constituents that persist following incineration in order to render the waste treatment residue nonhazardous. Appropriate technology identified in this work can be applied to ash produced by HW combuster operated by the Navy, if any, or be required for ash produced by commercial generators handling Navy HWs.

  20. An Analysis of Energy Savings Possible Through Advances in Automotive Tooling Technology

    SciTech Connect (OSTI)

    Rick Schmoyer, RLS

    2004-12-03T23:59:59.000Z

    The use of lightweight and highly formable advanced materials in automobile and truck manufacturing has the potential to save fuel. Advances in tooling technology would promote the use of these materials. This report describes an energy savings analysis performed to approximate the potential fuel savings and consequential carbon-emission reductions that would be possible because of advances in tooling in the manufacturing of, in particular, non-powertrain components of passenger cars and heavy trucks. Separate energy analyses are performed for cars and heavy trucks. Heavy trucks are considered to be Class 7 and 8 trucks (trucks rated over 26,000 lbs gross vehicle weight). A critical input to the analysis is a set of estimates of the percentage reductions in weight and drag that could be achieved by the implementation of advanced materials, as a consequence of improved tooling technology, which were obtained by surveying tooling industry experts who attended a DOE Workshop, Tooling Technology for Low-Volume Vehicle Production, held in Seattle and Detroit in October and November 2003. The analysis is also based on 2001 fuel consumption totals and on energy-audit component proportions of fuel use due to drag, rolling resistance, and braking. The consumption proportions are assumed constant over time, but an allowance is made for fleet growth. The savings for a particular component is then the product of total fuel consumption, the percentage reduction of the component, and the energy audit component proportion. Fuel savings estimates for trucks also account for weight-limited versus volume-limited operations. Energy savings are assumed to be of two types: (1) direct energy savings incurred through reduced forces that must be overcome to move the vehicle or to slow it down in braking. and (2) indirect energy savings through reductions in the required engine power, the production and transmission of which incur thermodynamic losses, internal friction, and other inefficiencies. Total savings for an energy use component are estimated by scaling up the direct savings with an approximate total-to-direct savings ratio. Market penetration for new technology vehicles is estimated from projections about scrappage. Retrofit savings are assumed negligible, but savings are also assumed to accrue with increases in the fleet size, based on economic growth forecasts. It is assumed that as vehicles in the current fleet are scrapped, they are replaced with advanced-technology vehicles. Saving estimates are based on proportions of new vehicles, rather than new-vehicle mileages. In practice, of course, scrapped vehicles are often replaced with used vehicles, and used vehicles are replaced with new vehicles. Because new vehicles are typically driven more than old, savings estimates based on count rather than mileage proportions tend to be biased down (i.e., conservative). Savings are expressed in terms of gallons of fuel saved, metric tons of CO2 emissions reductions, and percentages relative to 2001 levels of fuel and CO2. The sensitivity of the savings projections to inputs such as energy-audit proportions of fuel consumed for rolling resistance, drag, braking, etc. is assessed by considering different scenarios. Though based on many approximations, the estimates approximate the potential energy savings possible because of improvements in tooling. For heavy trucks, annual diesel savings of 2.4-6.8 percent, and cumulative savings on the order of 54-154 percent, of 2001 consumption could accrue by 2050. By 2050, annual gasoline savings of 2.8-12 percent, and cumulative savings on the order of 83-350 percent of 2001 consumption could accrue for cars.

  1. Making wastewater environmentally sustainable: Innovative technology offers new possibilities for wastewater treatment

    E-Print Network [OSTI]

    Heinrich, Katie

    2013-01-01T23:59:59.000Z

    Inc., a wastewater screening equipment engineering company in Houston, the NCEBR is a#22;empting to accelerate the move of e-beam technology commercialization from the research laboratory to the marketplace, Pillai said. E-beam processing... in their treatment of wastewater by pursuing new electron beam (e-beam) technology being researched at a Texas A&M AgriLife Research center in College Station. To help these plants in their move to increased sustainability in wastewater treatment, the National...

  2. Electron beam technologies in Poland state of the art and possibilities of development

    SciTech Connect (OSTI)

    Wojcicki, S. [Institute of Vacuum Technology, Warszawa (Poland)

    1994-12-31T23:59:59.000Z

    The recent state of high energy electron beam /EB/ used for metals melting and welding in Poland has been presented. Some typical construction of EB furnaces and EB welding machines designed and constructed in Institute of Vacuum Technology in Warsaw are shown. The examples of their application has also been described.

  3. Biology is curved, soft and elastic; silicon wafers are not. Semiconductor technologies that can bridge this gap in form and mechanics will create new opportunities in devices that adopt

    E-Print Network [OSTI]

    Reisslein, Martin

    ABSTRACT Biology is curved, soft and elastic; silicon wafers are not. Semiconductor technologies that can bridge this gap in form and mechanics will create new opportunities in devices that adopt

  4. Broadening the Appeal of Marginal Abatement Cost Curves: Capturing Both Carbon Mitigation and Development Benefits of Clean Energy Technologies; Preprint

    SciTech Connect (OSTI)

    Cowlin, S.; Cochran, J.; Cox, S.; Davison, C.; van der Gaast, Y.

    2012-08-01T23:59:59.000Z

    Low emission development strategies (LEDS) articulate policies and implementation plans that enable countries to advance sustainable, climate-resilient development and private sector growth while significantly reducing the greenhouse gas (GHG) emissions traditionally associated with economic growth. In creating a LEDS, policy makers often have access to information on abatement potential and costs for clean energy technologies, but there is a scarcity of economy-wide approaches for evaluating and presenting information on other dimensions of importance to development, such as human welfare, poverty alleviation, and energy security. To address this shortcoming, this paper proposes a new tool for communicating development benefits to policy makers as part of a LEDS process. The purpose of this tool is two-fold: 1. Communicate development benefits associated with each clean energy-related intervention; 2. Facilitate decision-making on which combination of interventions best contributes to development goals. To pilot this tool, the authors created a visual using data on developmental impacts identified through the Technology Needs Assessment (TNA) project in Montenegro. The visual will then be revised to reflect new data established through the TNA that provides information on cost, GHG mitigation, as well as the range and magnitude of developmental impacts.

  5. Generation of Closed Timelike Curves with Rotating Superconductors

    E-Print Network [OSTI]

    Clovis Jacinto de Matos

    2007-01-19T23:59:59.000Z

    The spacetime metric around a rotating SuperConductive Ring (SCR) is deduced from the gravitomagnetic London moment in rotating superconductors. It is shown that theoretically it is possible to generate Closed Timelike Curves (CTC) with rotating SCRs. The possibility to use these CTC's to travel in time as initially idealized by G\\"{o}del is investigated. It is shown however, that from a technology and experimental point of view these ideas are impossible to implement in the present context.

  6. Learning Curve

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

    1997-03-28T23:59:59.000Z

    It is a fundamental human characteristic that a person engaged in a repetitive task will improve his performance over time. If data are gathered on this phenomenon, a curve representing a decrease in effort per unit for repetitive operations can be developed. This phenomenon is real and has a specific application in cost analysis, cost estimating, or profitability studies related to the examination of future costs and confidence levels in an analysis. This chapter discusses the development and application of the learning curve.

  7. 167Int. J. Nuclear Energy Science and Technology, Vol. 2, No. 3, 2006 Analysis methods for the determination of possible

    E-Print Network [OSTI]

    Demazière, Christophe

    167Int. J. Nuclear Energy Science and Technology, Vol. 2, No. 3, 2006 Analysis methods-dependence due to the localised character of the perturbation. Several techniques relying on the analysis. Keywords: neutron noise analysis; Boiling Water Reactor (BWR); stability; Decay Ratio (DR); space

  8. Flow Duration Curve Load Duration Curve

    E-Print Network [OSTI]

    #12;Flow Duration Curve Load Duration Curve #12;1. Develop Flow Duration Curve 2. Estimate load given flow and concentration data--select appropriate conversion factors 3. Develop Load Duration Curve 4. Plot observed data with Load Duration Curve #12;What are they? How do you make one? #12;Describes

  9. Flow Duration Curve Load Duration Curve

    E-Print Network [OSTI]

    Flow Duration Curve Load Duration Curve 1. Develop Flow Duration Curve 2. Estimate load given flow and concentration data--select appropriate conversion factors 3. Develop Load Duration Curve 4. Plot observed data with Load Duration Curve What are they? How do you make one? Describes the percent of time a flow rate

  10. Curved Space or Curved Vacuum?

    E-Print Network [OSTI]

    Eric V. Linder

    2005-10-11T23:59:59.000Z

    While the simple picture of a spatially flat, matter plus cosmological constant universe fits current observation of the accelerated expansion, strong consideration has also been given to models with dynamical vacuum energy. We examine the tradeoff of ``curving'' the vacuum but retaining spatial flatness, vs. curving space but retaining the cosmological constant. These different breakdowns in the simple picture could readily be distinguished by combined high accuracy supernovae and cosmic microwave background distance measurements. If we allow the uneasy situation of both breakdowns, the curvature can still be measured to 1%, but at the price of degrading estimation of the equation of state time variation by 60% or more, unless additional information (such as weak lensing data or a tight matter density prior) is included.

  11. Every curve is a Teichmuller curve

    E-Print Network [OSTI]

    Ellenberg, Jordan S

    2009-01-01T23:59:59.000Z

    We prove that every algebraic curve X defined over the algebraic closure of the rationals is birational over the complex numbers to a Teichmuller curve.

  12. Examining CCS deployment potential in China via application of an integrated CCS cost curve

    SciTech Connect (OSTI)

    Dahowski, Robert T.; Davidson, Casie L.; Li, Xiaochun; Wei, Ning

    2013-06-01T23:59:59.000Z

    Cost curves focusing on CO2 transport and storage have been previously published and used to help establish the large potential for CCS technologies to deploy in China. This paper examines the results from recent work to incorporate the costs of CO2 capture and compression within integrated cost curves that better reflect the complete costs and therefore possible value of CCS. Results show that significant potential exists for large-scale deployment of CCS at costs less than $70/tCO2. Mapping of the cost curve results confirms that the majority of existing CO2 point sources may be able to utilize CCS technologies, and that - except for many sources in southern China - onshore storage capacity appears accessible and sufficient for decades of large-scale deployment.

  13. Learning Curve Management in Educational Programming Environments

    E-Print Network [OSTI]

    Goldman, Kenneth J.

    Learning Curve Management in Educational Programming Environments Benjamin H. Brinckerhoff Computer programmers are best served by integrated development environments that adapt to their growing sophistication programming environments. We provide pedagogical justification for each goal, describe possible supporting

  14. Deployment of CCS Technologies across the Load Curve for a Competitive Electricity Market as a Function of CO2 Emissions Permit Prices

    SciTech Connect (OSTI)

    Luckow, Patrick; Wise, Marshall A.; Dooley, James J.

    2011-04-18T23:59:59.000Z

    Consistent with other published studies, the modelling presented here reveals that baseload power plants are the first aspects of the electricity sector to decarbonize and are essentially decarbonized once CO2 permit prices exceed a certain threshold ($90/ton CO2 in this study). The decarbonization of baseload electricity is met by significant expansions of nuclear power and renewable energy generation technologies as well as the application of carbon dioxide capture and storage (CCS) technologies applied to both coal and natural gas fired power plants. Relatively little attention has been paid thus far to whether intermediate and peaking units would respond the same way to a climate policy given the very different operational and economic context that these kinds of electricity generation units operate under. In this paper, the authors discuss key aspects of the load segmentation methodology used to imbed a varying electricity demand within the GCAM (a state-of-the-art Integrated Assessment Model) energy and economic modelling framework and present key results on the role CCS technologies could play in decarbonizng subpeak and peak generation (encompassing only the top 10% of the load) and under what conditions. To do this, the authors have modelled two hypothetical climate policies that require 50% and 80% reductions in US emissions from business as usual by the middle of this century. Intermediate electricity generation is virtually decarbonized once carbon prices exceed approximately $150/tonCO2. When CO2 permit prices exceed $160/tonCO2, natural gas power plants with CCS have roughly the same marketshare as conventional gas plants in serving subpeak loads. The penetration of CCS into peak load (upper 6% here) is minimal under the scenarios modeled here suggesting that CO2 emissions from this aspect of the U.S. electricity sector would persist well into the future even with stringent CO2 emission control policies in place.

  15. Equivalence of Real Elliptic CurvesEquivalence of Real Elliptic Curves Part 2Part 2 --Birational EquivalenceBirational Equivalence

    E-Print Network [OSTI]

    Broughton, S. Allen

    1 Equivalence of Real Elliptic CurvesEquivalence of Real Elliptic Curves Part 2Part 2 -- Birational EquivalenceBirational Equivalence Allen Broughton Rose-Hulman Institute of Technology #12;2 CreditsCredits Discussion with Ken McMurdy #12;3 OutlineOutline -- 11 Recap of linear equivalence Complex elliptic curves

  16. Technology

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesis of 2D AlloysTrails NewsTechnologyTechnology A

  17. Technology

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesis of 2D AlloysTrails NewsTechnologyTechnology

  18. Characterizing emerging industrial technologies in energy models

    SciTech Connect (OSTI)

    Laitner, John A. (Skip); Worrell, Ernst; Galitsky, Christina; Hanson, Donald A.

    2003-07-29T23:59:59.000Z

    Conservation supply curves are a common tool in economic analysis. As such, they provide an important opportunity to include a non-linear representation of technology and technological change in economy-wide models. Because supply curves are closely related to production isoquants, we explore the possibility of using bottom-up technology assessments to inform top-down representations of energy models of the U.S. economy. Based on a recent report by LBNL and ACEEE on emerging industrial technologies within the United States, we have constructed a supply curve for 54 such technologies for the year 2015. Each of the selected technologies has been assessed with respect to energy efficiency characteristics, likely energy savings by 2015, economics, and environmental performance, as well as needs for further development or implementation of the technology. The technical potential for primary energy savings of the 54 identified technologies is equal to 3.54 Quads, or 8.4 percent of the assume d2015 industrial energy consumption. Based on the supply curve, assuming a discount rate of 15 percent and 2015 prices as forecasted in the Annual Energy Outlook2002, we estimate the economic potential to be 2.66 Quads - or 6.3 percent of the assumed forecast consumption for 2015. In addition, we further estimate how much these industrial technologies might contribute to standard reference case projections, and how much additional energy savings might be available assuming a different mix of policies and incentives. Finally, we review the prospects for integrating the findings of this and similar studies into standard economic models. Although further work needs to be completed to provide the necessary link between supply curves and production isoquants, it is hoped that this link will be a useful starting point for discussion with developers of energy-economic models.

  19. Pairings on hyperelliptic curves

    E-Print Network [OSTI]

    Balakrishnan, Jennifer; Chisholm, Sarah; Eisentraeger, Kirsten; Stange, Katherine; Teske, Edlyn

    2009-01-01T23:59:59.000Z

    We assemble and reorganize the recent work in the area of hyperelliptic pairings: We survey the research on constructing hyperelliptic curves suitable for pairing-based cryptography. We also showcase the hyperelliptic pairings proposed to date, and develop a unifying framework. We discuss the techniques used to optimize the pairing computation on hyperelliptic curves, and present many directions for further research.

  20. Simultaneous confidence bands in curve prediction applied to load curves

    E-Print Network [OSTI]

    Boyer, Edmond

    Simultaneous confidence bands in curve prediction applied to load curves J.M. Aza¨is1, S. Bercu2, J, load curve. 1 Introduction In curve prediction, one is generally interested in deriving simultaneous this technique in the numerical context of load curve pre- diction: power producers like EDF, the electrical

  1. Crude oil supply curves

    E-Print Network [OSTI]

    Adelman, Morris Albert

    1998-01-01T23:59:59.000Z

    Short-run cost curves shift over time as depletion counters increasing knowledge. Under competition, a rightward (leftward) shift indicates lower (higher) cost and greater (lesser) productivity. A simple coefficient captures ...

  2. Status for Learning Curves indlg ved BES temadag om

    E-Print Network [OSTI]

    cost of Danish wind turbines 0 200 400 600 800 1970 1980 1990 2000 2010 2020 Ratedpower[kW] 0 5 10 15 Curves - cost of wind energy technology 0,100 1,000 100 1000 10000 100000 Danish wind industry's global's Law": Size - in rated power - doubles every four years #12;On Experience Curves · Cost decreases

  3. Constructing Pairing-Friendly Elliptic Curves with Embedding Degree 10.

    E-Print Network [OSTI]

    on the application. In order to vary the security level or adapt to future improvements in discrete log technology with k = 12. There is a gen- eral construction, originally due to Cocks and Pinch [8], for curves

  4. Extinction curves in AGN

    E-Print Network [OSTI]

    B. Czerny

    2006-12-16T23:59:59.000Z

    The presence of the dust in the circumnuclear region strongly affects our view of the nucleus itself. The effect is strong in type 2 objects but weaker effect is likely to be present in type 1 objects as well. In these objects a correction to the observed optical/UV spectrum must be done in order to recover the intrinsic spectrum of a nucleus. The approach based on the extinction curve is convenient for that purpose so significant effort has been recently done in order to determine the extinction curve for the circumnuclear material. It seems clear that the circumnuclear dust is different from the average properties of the dust in the Interstellar Medium in our galaxy: the well known 2175 A feature is weak or absent in AGN nuclear dust, and the extinction curve at shorter wavelength does not seem to be rising as steeply. The circumnuclear dust is therefore more similar to SMC dust, or more likely, to the dust in very dense molecular clouds in our Galaxy. However, the exact shape of the extinction curve in the far UV is still a matter of debate, and various effects are difficult to disentangle.

  5. Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.

    2007-01-01T23:59:59.000Z

    existing coal-?red plants to install LNBs and other cost-cost for an SCR system ?tted to a new coal-?red power plant.O&M costs at a standard new U.S. coal-?red power plant. “

  6. Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.

    2007-01-01T23:59:59.000Z

    design parameters to a consistent basis, with all of the results adjusted to $2000 using the chemical engineering

  7. Connecting curves for dynamical systems

    E-Print Network [OSTI]

    R. Gilmore; Jean-Marc Ginoux; Timothy Jones; C. Letellier; U. S. Freitas

    2010-03-08T23:59:59.000Z

    We introduce one dimensional sets to help describe and constrain the integral curves of an $n$ dimensional dynamical system. These curves provide more information about the system than the zero-dimensional sets (fixed points) do. In fact, these curves pass through the fixed points. Connecting curves are introduced using two different but equivalent definitions, one from dynamical systems theory, the other from differential geometry. We describe how to compute these curves and illustrate their properties by showing the connecting curves for a number of dynamical systems.

  8. Graphene 'gateway' discovery opens possibilities for improved...

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

    Dawn Levy Communications 865.576.6448 Graphene 'gateway' discovery opens possibilities for improved energy technologies Computer simulations show a single proton (pink) can cross...

  9. Twisted Ate Pairing on Hyperelliptic Curves and Applications

    E-Print Network [OSTI]

    of Information Science and Technology, Sun Yat-Sen University, Guangzhou 510275, P.R.China isszhfg@mail.sysu.edu.cn 2 Guangdong Key Laboratory of Information Security Technology Guangzhou 510275, P.R.China Abstract hyperelliptic curves over prime fields with ordinary Jacobians by modeling on the Cocks-Pinch method

  10. Twisted Ate Pairing on Hyperelliptic Curves and Applications

    E-Print Network [OSTI]

    of Information Science and Technology, Sun Yat­Sen University, Guangzhou 510275, P.R.China isszhfg@mail.sysu.edu.cn 2 Guangdong Key Laboratory of Information Security Technology Guangzhou 510275, P.R.China Abstract hyperelliptic curves over prime fields with ordinary Jacobians by modeling on the Cocks­Pinch method

  11. Green Purchasing & Green Technology

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

    Purchasing & Technology Goals 6 & 7: Green Purchasing & Green Technology Our goal is to purchase and use environmentally sustainable products whenever possible and to implement...

  12. Spacefilling curves for 2simplicial meshes created with bisections and reflections

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    computational 2­meshes which can be very e#ciently load­balanced with the use of a space­filling curve. Keywords: Grid generation, space filling curve, load balancing Mathematics Subject Classification 2000: 65M the elements in curve­traversal order, and the required load­balance redistribution amounts to a possible

  13. New National Wind Potential Estimates for Modern and Near-Future Turbine Technologies (Poster)

    SciTech Connect (OSTI)

    Roberts, J. O.

    2014-01-01T23:59:59.000Z

    Recent advancements in utility-scale wind turbine technology and pricing have vastly increased the potential land area where turbines can be deployed in the United States. This presentation quantifies the new developable land potential (e.g., capacity curves), visually identifies new areas for possible development (e.g., new wind resource maps), and begins to address deployment barriers to wind in new areas for modern and future turbine technology.

  14. Langevin Equation on Fractal Curves

    E-Print Network [OSTI]

    Seema Satin; A. D. Gangal

    2014-04-28T23:59:59.000Z

    We analyse a random motion of a particle on a fractal curve, using Langevin approach. This involves defining a new velocity in terms of mass of the fractal curve, as defined in recent work. The geometry of the fractal curve, hence plays an important role in this analysis. A Langevin equation with a particular noise model is thus proposed and solved using techniques of the newly developed $F^\\alpha$-Calculus .

  15. Quantum curves and topological recursion

    E-Print Network [OSTI]

    Paul Norbury

    2015-02-16T23:59:59.000Z

    This is a survey article describing the relationship between quantum curves and topological recursion. A quantum curve is a Schr\\"odinger operator-like noncommutative analogue of a plane curve which encodes (quantum) enumerative invariants in a new and interesting way. The Schr\\"odinger operator annihilates a wave function which can be constructed using the WKB method, and conjecturally constructed in a rather different way via topological recursion.

  16. Econophysics Master curve for

    E-Print Network [OSTI]

    that, by taking into account the differences in liq- uidity for stocks of different size classes depends on transaction volume, the identity of the stock, and possibly many other factors. Here we show,000 largest firms on the New York Stock Exchange in 1995­98, by analysing roughly 113 million transactions

  17. Random Curves by Conformal Welding

    E-Print Network [OSTI]

    K. Astala; P. Jones; A. Kupiainen; E. Saksman

    2009-12-17T23:59:59.000Z

    We construct a conformally invariant random family of closed curves in the plane by welding of random homeomorphisms of the unit circle given in terms of the exponential of Gaussian Free Field. We conjecture that our curves are locally related to SLE$(\\kappa)$ for $\\kappa<4$.

  18. Random Curves by Conformal Welding

    E-Print Network [OSTI]

    Astala, K; Kupiainen, A; Saksman, E

    2009-01-01T23:59:59.000Z

    We construct a conformally invariant random family of closed curves in the plane by welding of random homeomorphisms of the unit circle given in terms of the exponential of Gaussian Free Field. We conjecture that our curves are locally related to SLE$(\\kappa)$ for $\\kappa<4$.

  19. Fourier duality of quantum curves

    E-Print Network [OSTI]

    Luu, Martin

    2015-01-01T23:59:59.000Z

    There are two different ways to deform a quantum curve along the flows of the KP hierarchy. We clarify the relation between the two KP orbits: In the framework of suitable connections attached to the quantum curve they are related by a local Fourier duality. As an application we give a conceptual proof of duality results in 2D quantum gravity.

  20. Parabolic curves in Lie groups

    SciTech Connect (OSTI)

    Pauley, Michael [School of Mathematics and Statistics, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009 (Australia)

    2010-05-15T23:59:59.000Z

    To interpolate a sequence of points in Euclidean space, parabolic splines can be used. These are curves which are piecewise quadratic. To interpolate between points in a (semi-)Riemannian manifold, we could look for curves such that the second covariant derivative of the velocity is zero. We call such curves Jupp and Kent quadratics or JK-quadratics because they are a special case of the cubic curves advocated by Jupp and Kent. When the manifold is a Lie group with bi-invariant metric, we can relate JK-quadratics to null Lie quadratics which arise from another interpolation problem. We solve JK-quadratics in the Lie groups SO(3) and SO(1,2) and in the sphere and hyperbolic plane, by relating them to the differential equation for a quantum harmonic oscillator00.

  1. OPTICAL PHASE CURVES OF KEPLER EXOPLANETS

    SciTech Connect (OSTI)

    Esteves, Lisa J.; De Mooij, Ernst J. W.; Jayawardhana, Ray, E-mail: esteves@astro.utoronto.ca, E-mail: demooij@astro.utoronto.ca, E-mail: rayjay@astro.utoronto.ca [Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, Ontario M5S 3H4 (Canada)

    2013-07-20T23:59:59.000Z

    We conducted a comprehensive search for optical phase variations of all close-in (a/R{sub *} < 10) planet candidates in 15 quarters of Kepler space telescope data. After correcting for systematics, we found eight systems that show secondary eclipses as well as phase variations. Of these, five (Kepler-5, Kepler-6, Kepler-8, KOI-64, and KOI-2133) are new and three (TrES-2, HAT-P-7, and KOI-13) have published phase curves, albeit with many fewer observations. We model the full phase curve of each planet candidate, including the primary and secondary transits, and derive their albedos, dayside and nightside temperatures, ellipsoidal variations, and Doppler beaming. We find that KOI-64 and KOI-2133 have nightside temperatures well above their equilibrium values (while KOI-2133 also has an albedo, >1), so we conclude that they are likely to be self-luminous objects rather than planets. The other six candidates have characteristics consistent with their being planets with low geometric albedos (<0.3). For TrES-2 and KOI-13, the Kepler bandpass appears to probe atmospheric layers hotter than the planet's equilibrium temperature. For KOI-13, we detect a never-before-seen third cosine harmonic with an amplitude of 6.7 {+-} 0.3 ppm and a phase shift of -1.1 {+-} 0.1 rad in the phase curve residual, possibly due to its spin-orbit misalignment. We report derived planetary parameters for all six planets, including masses from ellipsoidal variations and Doppler beaming, and compare our results to published values when available. Our results nearly double the number of Kepler exoplanets with measured phase curve variations, thus providing valuable constraints on the properties of hot Jupiters.

  2. Incorporating Experience Curves in Appliance Standards Analysis

    E-Print Network [OSTI]

    Desroches, Louis-Benoit

    2012-01-01T23:59:59.000Z

    experience curves for wind farms. Energy Policy 33, 133-150.curves for wind power. Energy Policy 30, 1181- Jakob, M. ,

  3. Fast curve fitting using neural networks C. M. Bishop and C. M. Roach

    E-Print Network [OSTI]

    Fast curve fitting using neural networks C. M. Bishop and C. M. Roach Citation: Rev. Sci. Instrum Kingdom C. M. Roach AEA Technology,Culham Laboratory, (Euratom/UkAEA Fusion Association)Oxon OX14 3DB

  4. Generalising the GHS Attack on the Elliptic Curve Discrete Logarithm Problem

    E-Print Network [OSTI]

    Hess, Florian

    Generalising the GHS Attack on the Elliptic Curve Discrete Logarithm Problem F. Hess Technical succumb to the basic GHS attack, thereby weakening curves over F2155 further. We also discuss other possible extensions or variations of the GHS attack and conclude that they are not likely to yield further

  5. Light bullets in nonlinear periodically curved waveguide arrays

    SciTech Connect (OSTI)

    Matuszewski, Michal; Garanovich, Ivan L. [Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia); Sukhorukov, Andrey A. [Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia); Centre for Ultra-high Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia)

    2010-04-15T23:59:59.000Z

    We predict that stable mobile spatiotemporal solitons can exist in arrays of periodically curved optical waveguides. We find two-dimensional light bullets in planar arrays with harmonic waveguide bending and three-dimensional bullets in square lattices with helical waveguide bending using variational formalism. Stability of the light-bullet solutions is confirmed by the direct numerical simulations which show that the light bullets can freely move across the curved arrays. This mobility property is a distinguishing characteristic compared to previously considered discrete light bullets which were trapped to a specific lattice site. These results suggest new possibilities for flexible spatiotemporal manipulation of optical pulses in photonic lattices.

  6. Algebraic quantum field theory in curved spacetimes

    E-Print Network [OSTI]

    Christopher J. Fewster; Rainer Verch

    2015-04-02T23:59:59.000Z

    This article sets out the framework of algebraic quantum field theory in curved spacetimes, based on the idea of local covariance. In this framework, a quantum field theory is modelled by a functor from a category of spacetimes to a category of ($C^*$)-algebras obeying supplementary conditions. Among other things: (a) the key idea of relative Cauchy evolution is described in detail, and related to the stress-energy tensor; (b) a systematic "rigidity argument" is used to generalise results from flat to curved spacetimes; (c) a detailed discussion of the issue of selection of physical states is given, linking notions of stability at microscopic, mesoscopic and macroscopic scales; (d) the notion of subtheories and global gauge transformations are formalised; (e) it is shown that the general framework excludes the possibility of there being a single preferred state in each spacetime, if the choice of states is local and covariant. Many of the ideas are illustrated by the example of the free Klein-Gordon theory, which is given a new "universal definition".

  7. Role of design complexity in technology improvement James McNerneya,b

    E-Print Network [OSTI]

    model for the evolution of the cost (or more generally the performance) of a technology or production experience curve learning curve performance curve The relation between a technology's cost c technologies in Fig. 1. The relationship between cost and cumulative production goes under several different

  8. Possibilities for Healthcare Computing

    E-Print Network [OSTI]

    Szolovits, Peter

    Advances in computing technology promise to aid in achieving the goals of healthcare. We review how such changes can support each of the goals of healthcare as identified by the U.S. Institute of Medicine: safety, ...

  9. Optical conductivity of curved graphene

    E-Print Network [OSTI]

    A. J. Chaves; T. Frederico; O. Oliveira; W. de Paula; M. C. Santos

    2014-05-01T23:59:59.000Z

    We compute the optical conductivity for an out-of-plane deformation in graphene using an approach based on solutions of the Dirac equation in curved space. Different examples of periodic deformations along one direction translates into an enhancement of the optical conductivity peaks in the region of the far and mid infrared frequencies for periodicities $\\sim100\\,$nm. The width and position of the peaks can be changed by dialling the parameters of the deformation profiles. The enhancement of the optical conductivity is due to intraband transitions and the translational invariance breaking in the geometrically deformed background. Furthemore, we derive an analytical solution of the Dirac equation in a curved space for a general deformation along one spatial direction. For this class of geometries, it is shown that curvature induces an extra phase in the electron wave function, which can also be explored to produce interference devices of the Aharonov-Bohm type.

  10. Economic evaluation of smart well technology

    E-Print Network [OSTI]

    Al Omair, Abdullatif A.

    2007-09-17T23:59:59.000Z

    comprehensive review of this technology has been discussed. The possible reservoir environments in which smart well technology could be used and also, the possible benefits that could be realized by utilizing smart well technology has been discussed...

  11. Harmonic algebraic curves and noncrossing partitions

    E-Print Network [OSTI]

    Martin, Jeremy L.; Savitt, David; Singer, Ted

    2007-02-01T23:59:59.000Z

    Motivated by Gauss’s first proof of the fundamental Theorem of Algebra, we study the topology of harmonic algebraic curves. By the maximum principle, a harmonic curve has no bounded components; its topology is determined by the combinatorial data...

  12. Explicit Coleman integration for hyperelliptic curves

    E-Print Network [OSTI]

    Balakrishnan, Jennifer S; Kedlaya, Kiran S

    2010-01-01T23:59:59.000Z

    Coleman's theory of p-adic integration figures prominently in several number-theoretic applications, such as finding torsion and rational points on curves, and computing p-adic regulators in K-theory (including p-adic heights on elliptic curves). We describe an algorithm for computing Coleman integrals on hyperelliptic curves, and its implementation in Sage.

  13. Multipath Curved Planar Reformation of the Peripheral

    E-Print Network [OSTI]

    Multipath Curved Planar Reformation of the Peripheral Arterial Tree in CT Angiography1 Justus that cause artifacts in multipath curved planar reformations (MPCPRs) of the peripheral arterial tree in 10-oblique multiplanar reformations perpendicular to the ves- sel centerline (10), and curved planar reformations

  14. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R

    2007-01-01T23:59:59.000Z

    Symposium, New Orleans, LA, EPRI, Palo Alto, CA. Keeth,Symposium, Washington, D.C, EPRI, Palo Alto, CA. Keeth,analysis’, Proceeding of EPRI/DOE/EPA 1995 SO 2 Control

  15. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R

    2007-01-01T23:59:59.000Z

    S.V. (1978) ‘Economic evaluation techniques, results, andMoser, R.E. (1986) ‘Economic evaluation of twenty-four FGD1990 update of FGD economic evaluations’, Proceeding of SO 2

  16. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A

    2007-01-01T23:59:59.000Z

    L. (2003) ‘Prospects for carbon capture and sequestrationtechnological progress in carbon capture and sequestration

  17. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Hounshell, David A

    2007-01-01T23:59:59.000Z

    detail. But unlike capital cost estimates, which can be (andcapital cost. The data in Figure 4 are used later to provide a rough estimate

  18. Gravitational-wave sensitivity curves

    E-Print Network [OSTI]

    Moore, C. J.; Cole, R. H.; Berry, C. P. L.

    2014-12-08T23:59:59.000Z

    the detectability of a given source (see figure A1). An additional advantage of this convention is that the values on the strain axis for the detector curve hn(f) have a simple physical interpretation: they correspond to the root-mean- square noise in a bandwidth f... , such as cryogenic cooling. The Einstein Telescope (ET) is an ambitious proposal to construct an underground third- generation detector. Its location would provide shielding from seismic noise, allowing it to observe frequencies of ?(10 10 )Hz4 . We use...

  19. Technology Support Strategic Plan MISSION STATEMENT

    E-Print Network [OSTI]

    Westfall, Peter H.

    1 Technology Support Strategic Plan MISSION STATEMENT Through collaboration and professionalism, the Technology Support Department provides the highest possible quality Information Technology (IT) services, support, and assistance to the University community. VISION STATEMENT Technology Support

  20. Discussions on the Cancellation Effect on a Curved Orbit

    SciTech Connect (OSTI)

    Rui Li; Ya. S. Derbenev

    2005-05-16T23:59:59.000Z

    The canonical formulation and the cancellation effect for bunch dynamics under collective interaction on a curved orbit were presented in Ref. [*]. Some possible controversial representations of the cancellation effect were later addressed by Geloni et al.** In this study, we discuss all the points raised in Ref. [**] based on our canonical treatment, and show how these points can be perceived from the view point of the cancellation picture.

  1. SUPERNOVA LIGHT CURVES POWERED BY FALLBACK ACCRETION

    SciTech Connect (OSTI)

    Dexter, Jason; Kasen, Daniel, E-mail: jdexter@berkeley.edu [Departments of Physics and Astronomy, University of California, Berkeley, CA 94720 (United States)

    2013-07-20T23:59:59.000Z

    Some fraction of the material ejected in a core collapse supernova explosion may remain bound to the compact remnant, and eventually turn around and fall back. We show that the late time ({approx}>days) power potentially associated with the accretion of this 'fallback' material could significantly affect the optical light curve, in some cases producing super-luminous or otherwise peculiar supernovae. We use spherically symmetric hydrodynamical models to estimate the accretion rate at late times for a range of progenitor masses and radii and explosion energies. The accretion rate onto the proto-neutron star or black hole decreases as M-dot {proportional_to}t{sup -5/3} at late times, but its normalization can be significantly enhanced at low explosion energies, in very massive stars, or if a strong reverse shock wave forms at the helium/hydrogen interface in the progenitor. If the resulting super-Eddington accretion drives an outflow which thermalizes in the outgoing ejecta, the supernova debris will be re-energized at a time when photons can diffuse out efficiently. The resulting light curves are different and more diverse than previous fallback supernova models which ignored the input of accretion power and produced short-lived, dim transients. The possible outcomes when fallback accretion power is significant include super-luminous ({approx}> 10{sup 44} erg s{sup -1}) Type II events of both short and long durations, as well as luminous Type I events from compact stars that may have experienced significant mass loss. Accretion power may unbind the remaining infalling material, causing a sudden decrease in the brightness of some long duration Type II events. This scenario may be relevant for explaining some of the recently discovered classes of peculiar and rare supernovae.

  2. Theory of a quantum noncanonical field in curved spacetimes

    SciTech Connect (OSTI)

    Indurain, Javier; Liberati, Stefano [Departamento de Fisica Teorica, Universidad de Zaragoza, Zaragoza 50009 (Spain); SISSA, Via Beirut 2-4, 34151 Trieste (Italy) and INFN sezione di Trieste (Italy)

    2009-08-15T23:59:59.000Z

    Much attention has been recently devoted to the possibility that quantum gravity effects could lead to departures from special relativity in the form of a deformed Poincare algebra. These proposals go generically under the name of doubly or deformed special relativity (DSR). In this article we further explore a recently proposed class of quantum field theories, involving noncanonically commuting complex scalar fields, which have been shown to entail a DSR-like symmetry. An open issue for such theories is whether the DSR-like symmetry has to be taken as a physically relevant symmetry, or if in fact the 'true' symmetries of the theory are just rotations and translations while boost invariance has to be considered broken. Here we analyze this issue by extending the known results to curved spacetime under both of the previous assumptions. We show that if the symmetry of the free theory is taken to be a DSR-like realization of the Poincare symmetry, then it is not possible to render such a symmetry a gauge symmetry of the curved physical spacetime. However, it is possible to introduce an auxiliary spacetime which allows one to describe the theory as a standard quantum field theory in curved spacetime. Alternatively, taking the point of view that the noncanonical commutation of the fields actually implies a breakdown of boost invariance, the physical spacetime manifold has to be foliated in surfaces of simultaneity, and the field theory can be coupled to gravity by making use of the Arnowitt-Deser-Misner prescription.

  3. Does the Environmental Kuznets Curve Describe How Individual Countries Behave?

    E-Print Network [OSTI]

    Deacon, Robert; Norman, Catherine S

    2004-01-01T23:59:59.000Z

    for an Environmental Kuznets Curve. ” Review of EconomicsFactoring the Environmental Kuznets Curve: Evidence fromand Development: Is There a Kuznets Curve for Air Pollution

  4. Is the environmental Kuznets curve an empirical regularity?

    E-Print Network [OSTI]

    Deacon, Robert; Norman, Catherine S

    2004-01-01T23:59:59.000Z

    the Environmental Kuznets Curve: Turning a Black Box into aand Development: Is There a Kuznets Curve for Air Pollutionon the Environmental Kuznets Curve? ” Environment and

  5. ENGINEERING TECHNOLOGY Engineering Technology

    E-Print Network [OSTI]

    ENGINEERING TECHNOLOGY Engineering Technology Program The Bachelor of Science in Engineering Technology (BSET) is a hands-on program based upon engineering technology fundamentals, engineering for employment or further education. The focus is on current engineering technology issues and applications used

  6. Possible existence of wormholes in the central regions of halos

    E-Print Network [OSTI]

    Farook Rahaman; P. Salucci; P. K. F. Kuhfittig; Saibal Ray; Mosiur Rahaman

    2015-01-05T23:59:59.000Z

    An earlier study [Rahaman et al. (2014) & Kuhfittig (2014)] has demonstrated the possible existence of wormholes in the outer regions of the galactic halo, based on the Navarro-Frenk-White (NFW) density profile. This paper uses the Universal Rotation Curve (URC) dark matter model to obtain analogous results for the central parts of the halo. This result is an important compliment to the earlier result, thereby confirming the possible existence of wormholes in most of the spiral galaxies.

  7. UV Light Curves of Thermonuclear Supernovae

    E-Print Network [OSTI]

    S. I. Blinnikov; E. I. Sorokina

    2000-03-17T23:59:59.000Z

    Ultraviolet light curves are calculated for several thermonuclear supernova models using a multifrequency radiation hydrodynamic code. It is found that Chandrasekhar-mass models produce very similar light curves both for detonation and deflagration. Sub-Chandrasekhar-mass models essentially differ from ``normal'' Chandrasekhar ones regarding behaviour of their UV fluxes. Differences in absolute brightness and in shape of light curves of thermonuclear supernovae could be detectable up to 300 Mpc with modern UV space telescopes.

  8. Learning Curve - DOE Directives, Delegations, and Requirements

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

    This chapter discusses the development and application of the learning curve. g4301-1chp21.pdf -- PDF Document, 28 KB Writer: John Makepeace Subjects: Administration Management...

  9. Canonical correlation of shipping forward curves

    E-Print Network [OSTI]

    Hadjiyiannis, Nicholas

    2010-01-01T23:59:59.000Z

    The behavior and interrelations between the main shipping forward curves are analyzed using multivariate statistics after removing the volatility distortions dictated by the Samuelson hypothesis. Principal Components ...

  10. Projection-based curve clustering Benjamin AUDER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -hydraulic computer code CATHARE is used to study the re- liability of reactor vessels. The code inputs are physical parameters and the outputs are time evolution curves of a few other physical quantities. As the CATHARE code process involves a clustering step. In the present paper, CATHARE output curves are clustered using a k

  11. Status: State Possibly Extirpated

    E-Print Network [OSTI]

    Tauschia Tenuissima; Rank Gsx

    when less than 4 inches tall; bulb-like root, 1/2 inch in diameter; leaves few, glabrous, divided three or more times into 3-13 narrow, linear segments up to 2 inches long and 1/2 inch wide. The flowers are white- to cream colored; rays of the umbel mostly 4-8, elongating unequally, the longer ones 2-6 inches long; pedicels very short, less than 1/8 inch long. The fruits are somewhat elliptic and lacking side wings. Identification Tips: The most distinctive features of this species are its early flowering, preference for meadowy habitats, and irregular umbels (see general description above). The species is difficult to locate unless it is found in rather dense patches. When growing in this manner, the distinctive creamy-white flowers are possible to identify, even from a distance. The genus Tauschia can easily be confused with the much larger genus Lomatium. Fortunately, no Lomatium species are found flowering in the same meadowy habitats in early spring. Mature fruits of Lomatium are flattened and winged, while those of Tauschia are cylindrical and lack wings. Phenology: Flowering occurs in early spring (April) often when the plant is only 1 inch tall. As the season continues (through May) the flower stems eventually elongate up to about 6 inches. Range: Regional endemic; currently known from northern ID and historically known from Spokane County, WA in the Columbia Basin physiographic province. Habitat: The species occupies grassy openings in moist to wet habitats. This includes meadows, river floodplains, and streambanks. Generally the areas are flat, although a few sites in Idaho were found on moderate slopes with perched water tables. Elevations range between 2580 to 3200 feet. The substrates tend to be productive silt/loams (loess) or alluvium. Some sites are known from the Palouse region in Idaho, however, the best sites are known from areas where meadows are surrounded by mixed coniferous forests of grand fir, Douglas fir,

  12. Knowledge fusion: Comparison of fuzzy curve smoothers to statistically motivated curve smoothers

    SciTech Connect (OSTI)

    Burr, T.; Strittmatter, R.B.

    1996-03-01T23:59:59.000Z

    This report describes work during FY 95 that was sponsored by the Department of Energy, Office of Nonproliferation and National Security (NN) Knowledge Fusion (KF) Project. The project team selected satellite sensor data to use as the one main example to which its analysis algorithms would be applied. The specific sensor-fusion problem has many generic features, which make it a worthwhile problem to attempt to solve in a general way. The generic problem is to recognize events of interest from multiple time series that define a possibly noisy background. By implementing a suite of time series modeling and forecasting methods and using well-chosen alarm criteria, we reduce the number of false alarms. We then further reduce the number of false alarms by analyzing all suspicious sections of data, as judged by the alarm criteria, with pattern recognition methods. This report gives a detailed comparison of two of the forecasting methods (fuzzy forecaster and statistically motivated curve smoothers as forecasters). The two methods are compared on five simulated and five real data sets. One of the five real data sets is satellite sensor data. The conclusion is the statistically motivated curve smoother is superior on simulated data of the type we studied. The statistically motivated method is also superior on most real data. In defense of the fuzzy-logic motivated methods, we point out that fuzzy-logic methods were never intended to compete with statistical methods on numeric data. Fuzzy logic was developed to handle real-world situations where either real data was not available or was supplemented with either ``expert opinion`` or some sort of linguistic information.

  13. Gauge Invariant Geometry of Closed Space Curves: Applications to Boundary Curves of Mobius-type Strips

    E-Print Network [OSTI]

    Radha Balakrishnan; Indubala I Satija

    2005-07-15T23:59:59.000Z

    We derive gauge-invariant expressions for the twist $Tw$ and the linking number $Lk$ of a closed space curve, that are independent of the frame used to describe the curve, and hence characterize the intrinsic geometry of the curve. We are thus led to a {\\it frame-independent} version of the C\\u{a}lug\\u{a}reanu-White-Fuller theorem $Lk =Tw + Wr$ for a curve, where $Wr$ is the writhe of the curve. The gauge-invariant twist and writhe are related to two types of geometric phases associated with the curve. As an application, we study the geometry of the boundary curves of closed twisted strips. Interestingly, the M\\"obius strip geometry is singled out by a characteristic maximum that appears in the geometric phases, at a certain critical width of the strip.

  14. Classification and forecasting of load curves Nolwen Huet

    E-Print Network [OSTI]

    Cuesta, Juan Antonio

    Classification and forecasting of load curves Nolwen Huet Abstract The load curve, which gives of electricity customer uses. This load curve is only available for customers with automated meter reading. For the others, EDF must estimate this curve. Usually a clustering of the load curves is performed, followed

  15. Curved carbon nanotubes: From unique geometries to novel properties and peculiar applications

    E-Print Network [OSTI]

    Simons, Jack

    Curved carbon nanotubes: From unique geometries to novel properties and peculiar applications and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China 2 Department Incorporating pentagons and heptagons into the hexagonal networks of pristine carbon nanotubes (CNTs) can form

  16. Business Growth with Energy Reduction Made Possible Through Technology

    E-Print Network [OSTI]

    Osifchin, N.

    1983-01-01T23:59:59.000Z

    , switching, transmission, and equipment building systems is reviewed and an estimate is made of the future trends of energy for these systems as well as the impact of alternative energy. It is concluded that continuing zero energy growth will be based...

  17. Diffusion-Limited Aggregation on Curved Surfaces

    E-Print Network [OSTI]

    Choi, J.

    We develop a general theory of transport-limited aggregation phenomena occurring on curved surfaces, based on stochastic iterated conformal maps and conformal projections to the complex plane. To illustrate the theory, we ...

  18. Wavelet Analysis of Galactic Rotation Curves

    E-Print Network [OSTI]

    M. Kuassivi

    2011-04-28T23:59:59.000Z

    The spatial wavelet spectra of 73 published spiral galaxies's rotation curves are computed and their associated scaleograms are presented. Scaleograms are used to detect and isolate local features observed in spiral galaxies's rotation curves. Although wiggles and bumps are usually interpreted as signs of recent and on-going merging, the analysis of the scaleograms reveals regular patterns consistent with the presence of large-scale modes throughout the disk.

  19. Chiral gap effect in curved space

    E-Print Network [OSTI]

    Antonino Flachi; Kenji Fukushima

    2014-06-25T23:59:59.000Z

    We discuss a new type of QCD phenomenon induced in curved space. In the QCD vacuum a mass gap of Dirac fermions is attributed to the spontaneous breaking of chiral symmetry. If the curvature is positive large, the chiral condensate melts but a chiral invariant mass gap can still remain, which we name the chiral gap effect in curved space. This leads to decoupling of quark deconfinement which implies a view of black holes surrounded by a first-order QCD phase transition.

  20. Environmental bias and elastic curves on surfaces

    E-Print Network [OSTI]

    Jemal Guven; Dulce María Valencia; Pablo Vázquez-Montejo

    2014-08-15T23:59:59.000Z

    The behavior of an elastic curve bound to a surface will reflect the geometry of its environment. This may occur in an obvious way: the curve may deform freely along directions tangent to the surface, but not along the surface normal. However, even if the energy itself is symmetric in the curve's geodesic and normal curvatures, which control these modes, very distinct roles are played by the two. If the elastic curve binds preferentially on one side, or is itself assembled on the surface, not only would one expect the bending moduli associated with the two modes to differ, binding along specific directions, reflected in spontaneous values of these curvatures, may be favored. The shape equations describing the equilibrium states of a surface curve described by an elastic energy accommodating environmental factors will be identified by adapting the method of Lagrange multipliers to the Darboux frame associated with the curve. The forces transmitted to the surface along the surface normal will be determined. Features associated with a number of different energies, both of physical relevance and of mathematical interest, are described. The conservation laws associated with trajectories on surface geometries exhibiting continuous symmetries are also examined.

  1. Electrospray characteristic curves: in pursuit of improved performance...

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

    Electrospray characteristic curves: in pursuit of improved performance in the nano-flow regime. Electrospray characteristic curves: in pursuit of improved performance in the...

  2. Faience Technology

    E-Print Network [OSTI]

    Nicholson, Paul

    2009-01-01T23:59:59.000Z

    by Joanne Hodges. Faience Technology, Nicholson, UEE 2009Egyptian materials and technology, ed. Paul T. Nicholson,Nicholson, 2009, Faience Technology. UEE. Full Citation:

  3. Freedom from Pollution? The State, the People, and the Environmental Kuznets Curve

    E-Print Network [OSTI]

    Bond, Craig A.; Farzin, Y. Hossein

    2004-01-01T23:59:59.000Z

    and the environmental Kuznets curve for deforestation: aand the environmental Kuznets curve. Ecological Economicsbias in environmental Kuznets curves. Ecological Economics

  4. Updated U.S. Geothermal Supply Curve

    SciTech Connect (OSTI)

    Augustine, C.; Young, K. R.; Anderson, A.

    2010-02-01T23:59:59.000Z

    This paper documents the approach used to update the U.S. geothermal supply curve. The analysis undertaken in this study estimates the supply of electricity generation potential from geothermal resources in the United States and the levelized cost of electricity (LCOE), capital costs, and operating and maintenance costs associated with developing these geothermal resources. Supply curves were developed for four categories of geothermal resources: identified hydrothermal (6.4 GWe), undiscovered hydrothermal (30.0 GWe), near-hydrothermal field enhanced geothermal systems (EGS) (7.0 GWe) and deep EGS (15,900 GWe). Two cases were considered: a base case and a target case. Supply curves were generated for each of the four geothermal resource categories for both cases. For both cases, hydrothermal resources dominate the lower cost range of the combined geothermal supply curve. The supply curves indicate that the reservoir performance improvements assumed in the target case could significantly lower EGS costs and greatly increase EGS deployment over the base case.

  5. The marine biodiversity curve is an icon of paleobiology. The familiar curve shows

    E-Print Network [OSTI]

    Waxman, David

    the temperate phage infects Escherichia coli, it enters one of two pathways: lytic (replicates and killsThe marine biodiversity curve is an icon of paleobiology. The familiar curve shows increasing (distinct rock units) as a proxy for the amount of marine rock available for paleontological sampling

  6. Quantum Coherence and Closed Timelike Curves

    E-Print Network [OSTI]

    S. W. Hawking

    1995-02-08T23:59:59.000Z

    Various calculations of the $S$ matrix have shown that it seems to be non unitary for interacting fields when there are closed timelike curves. It is argued that this is because there is loss of quantum coherence caused by the fact that part of the quantum state circulates on the closed timelike curves and is not measured at infinity. A prescription is given for calculating the superscattering matrix $\\$ $ on space times whose parameters can be analytically continued to obtain a Euclidean metric. It is illustrated by a discussion of a spacetime in with two disks in flat space are identified. If the disks have an imaginary time separation, this corresponds to a heat bath. An external field interacting with the heat bath will lose quantum coherence. One can then analytically continue to an almost real separation of the disks. This will give closed timelike curves but one will still get loss of quantum coherence.

  7. An investigation on stochastic specific activity curves

    E-Print Network [OSTI]

    Lee, Dominic Yat-Hung

    1973-01-01T23:59:59.000Z

    . into homogeneous components called. compartment s. (3) The system is in steady state, i. e. , compartments have a constant size and. are connected by fixed. flow rates. (4) The introduction of tracer does not alter the behavior of the system. (5) The system... 0. 10 SA (t) SA (t) Figure 3. 2. 2 Deterministic Specific Activity-Time Curve With stochastic flow of the tracer, the curves shown in Figure 3. 2. 2 (p. 10) would not be smooth, instead. they take the form as shown in Figure 4. 2. 1 (p. 18...

  8. Chiral gap effect in curved space

    E-Print Network [OSTI]

    Antonino Flachi; Kenji Fukushima

    2015-05-29T23:59:59.000Z

    We discuss a new type of QCD phenomenon induced in curved space. In the QCD vacuum, a mass-gap of Dirac fermions is attributed to the spontaneous breaking of chiral symmetry. If the curvature is positive large, the chiral condensate melts but a chiral invariant mass-gap can still remain, which we name the chiral gap effect in curved space. This leads to decoupling of quark deconfinement which implies a view of black holes surrounded by a first-order QCD phase transition.

  9. Complex Fluid Analysis with the Advanced Distillation Curve Approach

    E-Print Network [OSTI]

    Complex Fluid Analysis with the Advanced Distillation Curve Approach Thomas J. Bruno, Lisa S. Ott for measuring distillation curves reveals the physicochemical properties of complex fluids such as fuels distillation curves of complex fluids. The distillation curve provides the only practical avenue to assess

  10. Conservation Screening Curves to Compare Efficiency Investments to Power Plants

    E-Print Network [OSTI]

    methodology to compare supply and demand-side resources. The screening curve approach supplements with load curve approach supplements with load shape information the data contained in a supply curve of conservedLBL-27286 Conservation Screening Curves to Compare Efficiency Investments to Power Plants Jonathan

  11. Technology reviews: Glazing systems

    SciTech Connect (OSTI)

    Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

    1992-09-01T23:59:59.000Z

    We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology; determine the performance range of available technologies; identify the most promising technologies and promising trends in technology advances; examine market forces and market trends; and develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fag into that class.

  12. Technology reviews: Shading systems

    SciTech Connect (OSTI)

    Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

    1992-09-01T23:59:59.000Z

    We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends. Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

  13. Research Summary Estimating Woodfuel Resource Cost Curves

    E-Print Network [OSTI]

    and extraction methods. Background Just under half of the final energy consumed in the UK (49%) is in the formResearch Summary Estimating Woodfuel Resource Cost Curves As a renewable energy source, woodfuel. The woodfuel strategy adopted by Forestry Commission England supports delivery of these. It aims to sustainably

  14. Closed timelike curves in general relativity

    E-Print Network [OSTI]

    W. B. Bonnor

    2002-11-13T23:59:59.000Z

    Many solutions of Einstein's field equations contain closed timelike curves (CTC). Some of these solutions refer to ordinary materials in situations which might occur in the laboratory, or in astrophysics. It is argued that, in default of a reasonable interpretation of CTC, general relativity does not give a satisfactory account of all phenomena within its terms of reference.

  15. WILD MODELS OF CURVES DINO LORENZINI

    E-Print Network [OSTI]

    Lorenzini, Dino J.

    WILD MODELS OF CURVES DINO LORENZINI Abstract. Let K be a complete discrete valuation field of X/K obtained by desingularizing the wild quotient singularities of the quotient Y/H. The most of wild quotient singularities having pairwise distinct resolution graphs. The information on the regular

  16. The Role of Design Complexity in Technology Improvement

    E-Print Network [OSTI]

    . We show that the relationship between the cost of the whole technology and the number of innovation The relation between a technology's cost c and the cumu- lative amount produced y is often empirically observed of historical performance curves for several different technologies in Figure 1. The relationship between cost

  17. Magnetar Driven Shock Breakout and Double Peaked Supernova Light Curves

    E-Print Network [OSTI]

    Kasen, Daniel; Bildsten, Lars

    2015-01-01T23:59:59.000Z

    The light curves of some luminous supernovae are suspected to be powered by the spindown energy of a rapidly rotating magnetar. Here we describe a possible signature of the central engine: a burst of shock breakout emission occurring several days after the supernova explosion. The energy input from the magnetar inflates a high-pressure bubble that drives a shock through the pre-exploded supernova ejecta. If the magnetar is powerful enough, that shock will near the ejecta surface and become radiative. At the time of shock breakout, the ejecta will have expanded to a large radius (~10^{14} cm) so that the radiation released is at optical/ultraviolet wavelengths (T ~ 20,000 K) and lasts for several days. The luminosity and timescale of this magnetar driven shock breakout are similar to the first peak observed recently in the double-peaked light curve of SN-LSQ14BDQ. However, for a large region of model parameter space, the breakout emission is predicted to be dimmer than the diffusive luminosity from direct magn...

  18. Dirac Equation on a Curved 2+1 Dimensional Hypersurface

    E-Print Network [OSTI]

    Mehmet Ali Olpak

    2011-12-22T23:59:59.000Z

    Interest on 2 + 1 dimensional electron systems has increased considerably after the realization of novel properties of graphene sheets, in which the behaviour of electrons is effectively described by relativistic equations. Having this fact in mind, the following problem is studied in this work: when a spin 1/2 particle is constrained to move on a curved surface, is it possible to describe this particle without giving reference to the dimensions external to the surface? As a special case of this, a relativistic spin 1/2 particle which is constrained to move on a 2 + 1 dimensional hypersurface of the 3 + 1 dimensional Minkowskian spacetime is considered, and an effective Dirac equation for this particle is derived using the so-called thin layer method. Some of the results are compared with those obtained in a previous work by M. Burgess and B. Jensen.

  19. General Relativistic Rotation Curves in a Post-Newtonian Light

    E-Print Network [OSTI]

    Aleksandar Rakic; Dominik J. Schwarz

    2008-11-10T23:59:59.000Z

    The missing of a Keplerian fall-off in the observed galaxy rotation curves represents classical evidence for the existence of dark matter on galactic scales. There has been some recent activity concerning the potential of modelling galactic systems with the help of general relativity. This was motivated by claims that by the use of full general relativity dark matter could be made superfluous. Here we focus on possible axisymmetric and stationary solutions of Einstein's equations with rotating dust. After a short review of the current debate we pursue the idea of approaching such relativistic models in a Newtonian language. We analyse rigidly as well as differentially rotating Newtonian and Post-Newtonian spacetimes and find that it is necessary to incorporate a Post-Newtonian term in order to make physical sense.

  20. What's Possible for Clean Energy

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Building Efficiency 45 Concentrating Solar Power 59 Construction Materials 71 Geothermal 81 Nuclear 91 Plug authors and endorsers. Go to gigatonthrowdown.org for report downloads, supplemental material for clean energy technologies, and entrepreneurs can starting building the leading clean energy companies

  1. Curved butterfly bileaflet prosthetic cardiac valve

    DOE Patents [OSTI]

    McQueen, David M. (185 Hillside Ave., Chatham, NJ 07928); Peskin, Charles S. (186 Harrard Dr., Hartsdale, NY 10530)

    1991-06-25T23:59:59.000Z

    An annular valve body having a central passageway for the flow of blood therethrough with two curved leaflets each of which is pivotally supported on an accentric positioned axis in the central passageway for moving between a closed position and an open position. The leaflets are curved in a plane normal to the eccentric axis and positioned with the convex side of the leaflets facing each other when the leaflets are in the open position. Various parameters such as the curvature of the leaflets, the location of the eccentric axis, and the maximum opening angle of the leaflets are optimized according to the following performance criteria: maximize the minimum peak velocity through the valve, maximize the net stroke volume, and minimize the mean forward pressure difference, thereby reducing thrombosis and improving the hemodynamic performance.

  2. Field Theory on Curved Noncommutative Spacetimes

    E-Print Network [OSTI]

    Alexander Schenkel; Christoph F. Uhlemann

    2010-08-03T23:59:59.000Z

    We study classical scalar field theories on noncommutative curved spacetimes. Following the approach of Wess et al. [Classical Quantum Gravity 22 (2005), 3511 and Classical Quantum Gravity 23 (2006), 1883], we describe noncommutative spacetimes by using (Abelian) Drinfel'd twists and the associated *-products and *-differential geometry. In particular, we allow for position dependent noncommutativity and do not restrict ourselves to the Moyal-Weyl deformation. We construct action functionals for real scalar fields on noncommutative curved spacetimes, and derive the corresponding deformed wave equations. We provide explicit examples of deformed Klein-Gordon operators for noncommutative Minkowski, de Sitter, Schwarzschild and Randall-Sundrum spacetimes, which solve the noncommutative Einstein equations. We study the construction of deformed Green's functions and provide a diagrammatic approach for their perturbative calculation. The leading noncommutative corrections to the Green's functions for our examples are derived.

  3. Light Curves of Swift Gamma Ray Bursts

    E-Print Network [OSTI]

    Paolo Cea

    2006-09-22T23:59:59.000Z

    Recent observations from the Swift gamma-ray burst mission indicate that a fraction of gamma ray bursts are characterized by a canonical behaviour of the X-ray afterglows. We present an effective theory which allows us to account for X-ray light curves of both (short - long) gamma ray bursts and X-ray rich flashes. We propose that gamma ray bursts originate from massive magnetic powered pulsars.

  4. Detection of interlayer communication using type curves

    E-Print Network [OSTI]

    Tiefenthal, Sven A.

    1988-01-01T23:59:59.000Z

    with the adjacent formation through type curve analysis. The response caused by the essentially infinite acting producing zone alone can be filtered out using desuperposition. The remaining response is the "deviation function" caused by the leaking fault. Type.... TABLE OF CONTENTS Page ABSTRACT. ACKNOWLEDGEMENTS TABLE OF CONTENTS. LIST OF TABLES . V1 . viii LIST OF FIGURES. . . . . IX INTRODUCTION BACKGROUND THEORY Infinite Acting Reservoir. Linear Discontinuities. Fault Parameterization. . . . 8 9...

  5. Galaxy rotation curves in de Sitter space

    E-Print Network [OSTI]

    Maurice H. P. M. van Putten

    2015-01-27T23:59:59.000Z

    Dark energy inferred from the observed negative deceleration parameter introduces a small mass of the graviton, that satisfies the Higuchi stability condition. It implies an infra-red modification of gravitation that produces Milgrom's inverse distance law of gravitational attraction in excellent agreement with the observed galaxy rotation curves. We conclude that dark matter is present cosmologically with no need for local clustering in galaxies.

  6. Rotation Curve Measurement using Cross-Correlation

    E-Print Network [OSTI]

    Elizabeth J. Barton; Sheila J. Kannappan; Michael J. Kurtz; Margaret J. Geller

    2000-06-20T23:59:59.000Z

    Longslit spectroscopy is entering an era of increased spatial and spectral resolution and increased sample size. Improved instruments reveal complex velocity structure that cannot be described with a one-dimensional rotation curve, yet samples are too numerous to examine each galaxy in detail. Therefore, one goal of rotation curve measurement techniques is to flag cases in which the kinematic structure of the galaxy is more complex than a single-valued curve. We examine cross-correlation as a technique that is easily automated and works for low signal-to-noise spectra. We show that the technique yields well-defined errors which increase when the simple spectral model (template) is a poor match to the data, flagging those cases for later inspection. We compare the technique to the more traditional, parametric technique of simultaneous emission line fitting. When the line profile at a single slit position is non-Gaussian, the techniques disagree. For our model spectra with two well-separated velocity components, assigned velocities from the two techniques differ by up to ~52% of the velocity separation of the model components. However, careful use of the error statistics for either technique allows one to flag these non-Gaussian spectra.

  7. Capillary migration of microdisks on curved interfaces

    E-Print Network [OSTI]

    Lu Yao; Nima Sharifi-Mood; Iris B. Liu; Kathleen J. Stebe

    2014-12-23T23:59:59.000Z

    The capillary energy landscape for particles on curved fluid interfaces is strongly influenced by the particle wetting conditions. Contact line pinning has now been widely reported for colloidal particles, but its implications in capillary interactions have not been addressed. Here, we present experiment and analysis for disks with pinned contact lines on curved fluid interfaces. In experiment, we study microdisk migration on a host interface with zero mean curvature; the microdisks have contact lines pinned at their sharp edges and are sufficiently small that gravitational effects are negligible. The disks migrate away from planar regions toward regions of steep curvature with capillary energies inferred from the dissipation along particle trajectories which are linear in the deviatoric curvature. We derive the curvature capillary energy for an interface with arbitrary curvature, and discuss each contribution to the expression. By adsorbing to a curved interface, a particle eliminates a patch of fluid interface and perturbs the surrounding interface shape. Analysis predicts that perfectly smooth, circular disks do not migrate, and that nanometric deviations from a planar circular, contact line, like those around a weakly roughened planar disk, will drive migration with linear dependence on deviatoric curvature, in agreement with experiment.

  8. Incorporating Experience Curves in Appliance Standards Analysis

    SciTech Connect (OSTI)

    Garbesi, Karina; Chan, Peter; Greenblatt, Jeffery; Kantner, Colleen; Lekov, Alex; Meyers, Stephen; Rosenquist, Gregory; Buskirk, Robert Van; Yang, Hung-Chia; Desroches, Louis-Benoit

    2011-10-31T23:59:59.000Z

    The technical analyses in support of U.S. energy conservation standards for residential appliances and commercial equipment have typically assumed that manufacturing costs and retail prices remain constant during the projected 30-year analysis period. There is, however, considerable evidence that this assumption does not reflect real market prices. Costs and prices generally fall in relation to cumulative production, a phenomenon known as experience and modeled by a fairly robust empirical experience curve. Using price data from the Bureau of Labor Statistics, and shipment data obtained as part of the standards analysis process, we present U.S. experience curves for room air conditioners, clothes dryers, central air conditioners, furnaces, and refrigerators and freezers. These allow us to develop more representative appliance price projections than the assumption-based approach of constant prices. These experience curves were incorporated into recent energy conservation standards for these products. The impact on the national modeling can be significant, often increasing the net present value of potential standard levels in the analysis. In some cases a previously cost-negative potential standard level demonstrates a benefit when incorporating experience. These results imply that past energy conservation standards analyses may have undervalued the economic benefits of potential standard levels.

  9. Spatial and Temporal Variations of Light Curves in Gravitationally Lensed Sources

    E-Print Network [OSTI]

    A. A. Minakov; V. G. Vakulik

    2004-01-06T23:59:59.000Z

    Effects of macro-and microlensing on the spatial and temporal characteristics of images of remote sources, observed through the inner regions of lensing galaxies are discussed. A particular attention was given to the case, when microlenses, - stars, star-like or planetary bodies, - are situated near the critical curves of macrolenses, - galaxies, stellar clusters, etc. The investigation is of interest for the gravitational lens (GL) systems, where the lensed images are observed close to the critical curve of a macrolens. Annular, arched or confluent images should be regarded as an indication to such a proximity. Numerical simulation allowed to determine the structure of critical curves and caustics, formed by macro and microlenses, and to evaluate possible distortions, caused by microlenses for various locations with respect to the critical curve of a regular lens. The difference of our results from those obtained earlier with the standard (linearized) approach to describe the regular gravitational lens was shown to be the larger the closer to the critical curve the microlenses are situated. In addition to spatial redistributions in the visible images, complicated deformation of their light curves occurs in gravitational lensing of variable in time and extended sources. The magnitude of the temporal variations depend not only on the GL parameters (e.g., mass distribution), but on the parameters of the source as well, such as linear dimension of the emitting region, its location with respect to the critical curve, and the impulse duration. The analysis shows, that in this case GL acts as a filter, which passes slow temporal variations without degradations, and smoothes the rapid ones.

  10. Visual Attention and Driver Performance at Horizontal Curves

    E-Print Network [OSTI]

    Brimley, Bradford K.

    2014-12-02T23:59:59.000Z

    Despite the frequency with which drivers encounter curves on highways, curves are regularly identified as locations that experience disproportionately high crash rates. Crash data suggest that inattention is one of the leading causes of crashes...

  11. Wave Energy challenges and possibilities

    E-Print Network [OSTI]

    © Wave Energy ­ challenges and possibilities By: Per Resen Steenstrup www.WaveStarEnergy.com Risø-R-1608(EN) 161 #12;© Wave energy is an old story.... The first wave energy patent is 200 years old. Over the last 100 years more than 200 new wave energy devices have been developped and more than 1.000 patents

  12. Faculty of Science: Possible Careers

    E-Print Network [OSTI]

    Brownstone, Rob

    for Research in Mathematical www.aarms.math.ca Statistical Society of Canada - www.ssc.ca American Statistical Association - www.amstat.org Royal Statistical Society - www.rss.org.uk Labour Market Information WorkinginFaculty of Science: STATISTICS Possible Careers Professor Forensic Statistician Computer Programmer

  13. Possible Pressure Effect for Superconductors

    E-Print Network [OSTI]

    A. Kwang-Hua Chu

    2005-08-30T23:59:59.000Z

    We make an estimate of the possible range of $\\Delta T_c$ induced by high-pressure effects in post-metallic superconductors by using the theory of {\\it extended irreversible/reversible thermodynamics} and Pippard's length scale. The relationship between the increment of the superconducting temperature and the increase of the pressure is parabolic.

  14. Marine Energy Technology Symposium METS2014

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

    research was made possible by support from the Department of Energy's EERE Office's Wind and Water Power Technologies Office. The work was supported by Sandia National...

  15. Buildings Technologies Deployment | Clean energy | ORNL

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

    are successfully deployed to the fullest extent possible. ORNL helps optimize the energy performance of buildings and industrial processes by moving technologies to full use...

  16. COMPUTER GENERATION OF TYPE CURVES SUBMITIED TO THE DEPARTMENTOF PETROLEUMENGINEERING

    E-Print Network [OSTI]

    Stanford University

    COMPUTER GENERATION OF TYPE CURVES A REPORT SUBMITIED TO THE DEPARTMENTOF PETROLEUMENGINEERING data. This paper presents some previously published type curves and the computer programs that were between two parallel sealing faults. The governing equations for these curves are derived. The computer

  17. Length and Energy of Quadratic Bezier Curves and Applications

    E-Print Network [OSTI]

    Hoffmann, Christoph M.

    Length and Energy of Quadratic B´ezier Curves and Applications Young Joon Ahn a , Christoph for the arc length and the bending energy of quadratic B´ezier curves. The formulae are in terms control point is analyzed for curves of fixed arc length or bending energy. In the case of arc length

  18. RANKS OF ELLIPTIC CURVES WITH PRESCRIBED TORSION OVER NUMBER FIELDS

    E-Print Network [OSTI]

    Dujella, Andrej

    RANKS OF ELLIPTIC CURVES WITH PRESCRIBED TORSION OVER NUMBER FIELDS JOHAN BOSMAN, PETER BRUIN of all elliptic curves over quadratic fields with torsion subgroup T is empty, or it contains curves number fields. More explicitly, we will be interested in the following question: given a torsion group

  19. Algorithms for Mumford Curves Ralph Morrison and Qingchun Ren

    E-Print Network [OSTI]

    Boyer, Edmond

    discuss specific methods and future work for hyperelliptic Mumford curves. 1. Introduction Curves over non geometry, which looks at the images in Rn of curves under coordinate-wise valuation, these are balanced complete with respect to a nontrivial non-archimedean valuation. Unless otherwise stated, | · | will denote

  20. Tracking Endocardium Using Optical Flow along Iso-Value Curve

    E-Print Network [OSTI]

    1 Tracking Endocardium Using Optical Flow along Iso-Value Curve Qi Duan1, Elsa D. Angelini2 indicators. · A framework of optical flow along iso-value curves is proposed and applied to several cardiac;9 OF along Iso-value Curves · In myocardial motion analysis, motion fields are projected along specific

  1. Bringing Tabletop Technologies to Kindergarten Javier Marco, Eva Cerezo, Sandra

    E-Print Network [OSTI]

    Baldassarri, Sandra

    Bringing Tabletop Technologies to Kindergarten Children Javier Marco, Eva Cerezo, Sandra of Central Lancashire, Preston, UK {emazzone, jcread}@uclan.ac.uk ABSTRACT Taking computer technology away possibilities that tangible interaction and tabletop technologies offer for manipulative learning. After

  2. New Curved Spacetime Dirac Equations - On the Anomalous Gyromagnetic Ratio

    E-Print Network [OSTI]

    G. G. Nyambuya

    2008-09-06T23:59:59.000Z

    I propose three new curved spacetime versions of the Dirac Equation. These equations have been developed mainly to try and account in a natural way for the observed anomalous gyromagnetic ratio of Fermions. The derived equations suggest that particles including the Electron which is thought to be a point particle do have a finite spatial size which is the reason for the observed anomalous gyromagnetic ratio. A serendipitous result of the theory, is that, two of the equation exhibits an asymmetry in their positive and negative energy solutions the first suggestion of which is clear that a solution to the problem as to why the Electron and Muon - despite their acute similarities - exhibit an asymmetry in their mass is possible. The Mourn is often thought as an Electron in a higher energy state. Another of the consequences of three equations emanating from the asymmetric serendipity of the energy solutions of two of these equations, is that, an explanation as to why Leptons exhibit a three stage mass hierarchy is possible.

  3. Alternative Energy Technologies Solar Power

    E-Print Network [OSTI]

    Scott, Christopher

    #12;Alternative Energy Technologies Solar Power Photovoltaics Concentrating Solar Power (CSP) Power;Concentrating Solar Power (CSP) Reflector material is Aluminum or Silver Tube material ..... Several possible ............... Mexico, Canada, Peru Alumina ............Guinea, Brazil, Australia, Jamaica Manganese ....... S. Africa

  4. Low Level Heat Recovery Technology

    E-Print Network [OSTI]

    O'Brien, W. J.

    1982-01-01T23:59:59.000Z

    level heat recovery technology. This paper discusses heat distribution systems, latest developments in absorption refrigeration and organic Rankine cycles, and pressure, minimization possibilities. The relative merits and economics of the various...

  5. Decline curve analysis for horizontal wells

    E-Print Network [OSTI]

    Shih, Min-Yu

    1994-01-01T23:59:59.000Z

    support kept me from losing sight of my goals. Thanks to Sam Hou, Joseph Wang, Robert Liau, James Wang, and Shou for their company and in particular to Li Fan and Mrs. Shou-Lee Chang for their caring and delicious meals when I forgot my dinner. Thanks... Pressure (L/2xe= 0. 2) Composite Dimensionless Flow Rate Integral and Flow Rate Integral Derivative Functions Type Curve for an Infinite-Conductivity Horizontal Well Located in the Center of a Square Drainage Area, Producing at Constant Bottomhole...

  6. Negative decline curves of coalbed degasification wells

    SciTech Connect (OSTI)

    Harrison, G.C.; Gordon, R.B.

    1984-05-01T23:59:59.000Z

    Production data from coalbed degasification wells characteristically exhibit a negative decline curve. The dynamics of this methane production are complex and interrelated. As production begins, water and free gas are often first recovered. Continued production lowers pressure and increases permeability to gas, allowing adsorbed gas to flow. This pressure drop within the formation causes sublimation whereby gas, which is absorbed within the coal, forms on the walls of the micropores. Finally, the desorption through production disturbs the chemical and physical equilibrium of the coal, thus enabling the coal to resume generation of methane.

  7. Modeling the Phillips curve with unobserved components

    E-Print Network [OSTI]

    Harvey, Andrew C

    is then nonstationary. However, writing the equation as #1;#25;t = #12;xt+"t makes it clear that what we have is not really a Phillips curve (though adding lags of xt and incorporating a unit root could retrieve the situation). On the other hand, a stationary model... -looking. The conditions under which a model with an expectational term reverts to (10) are derived below. The fact that the forecast function for a random walk component is constant simpli?es matters considerably. The reduced form of (10) is an ARMAX model in which #1;#25...

  8. Wave regularity in curve integrable spacetimes

    E-Print Network [OSTI]

    Yafet Sanchez Sanchez

    2015-02-23T23:59:59.000Z

    The idea of defining a gravitational singularity as an obstruction to the dynamical evolution of a test field (described by a PDE) rather than the dynamical evolution of a particle (described by a geodesics) is explored. In particular, the concept of wave regularity is introduced which serves to show that the classical singularities in curve integrable spacetimes do not interrupt the well-posedness of the wave equation. The techniques used also provide arguments that can be extended to establish when a classically singular spacetime remains singular in a semi-classical picture.

  9. The smallest possible heat engines

    E-Print Network [OSTI]

    Noah Linden; Sandu Popescu; Paul Skrzypczyk

    2010-10-28T23:59:59.000Z

    We construct the smallest possible self contained heat engines; one composed of only two qubits, the other of only a single qutrit. The engines are self-contained as they do not require external sources of work and/or control. They are able to produce work which is used to continuously lift a weight. Despite the dimension of the engine being small, it is still able to operate at the Carnot efficiency.

  10. Possible Draft HAB Comments for

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah Project Office Press Releases Portsmouth/Paducah: Preliminary issue

  11. A forgotten episode of the $?~Car$ light curve in 1860-1865

    E-Print Network [OSTI]

    V. F. Polcaro; R. Viotti

    1993-05-19T23:59:59.000Z

    We have found previously unreported observations of the galactic Luminous Blue Variable $\\eta ~Car$ covering the period 1860-1865. Contrary to the current belief, these data suggest that the star reached the first magnitude in 1860-1862, with possible large luminosity fluctuations, followed by a steep fading in 1865. A revised historical light curve of this most interesting object is given. Paper in press in Astronomy and Astrophysics.

  12. Axiomatic quantum field theory in curved spacetime

    E-Print Network [OSTI]

    S. Hollands; R. M. Wald

    2008-03-13T23:59:59.000Z

    The usual formulations of quantum field theory in Minkowski spacetime make crucial use of features--such as Poincare invariance and the existence of a preferred vacuum state--that are very special to Minkowski spacetime. In order to generalize the formulation of quantum field theory to arbitrary globally hyperbolic curved spacetimes, it is essential that the theory be formulated in an entirely local and covariant manner, without assuming the presence of a preferred state. We propose a new framework for quantum field theory, in which the existence of an Operator Product Expansion (OPE) is elevated to a fundamental status, and, in essence, all of the properties of the quantum field theory are determined by its OPE. We provide general axioms for the OPE coefficients of a quantum field theory. These include a local and covariance assumption (implying that the quantum field theory is locally and covariantly constructed from the spacetime metric), a microlocal spectrum condition, an "associativity" condition, and the requirement that the coefficient of the identity in the OPE of the product of a field with its adjoint have positive scaling degree. We prove curved spacetime versions of the spin-statistics theorem and the PCT theorem. Some potentially significant further implications of our new viewpoint on quantum field theory are discussed.

  13. Light curves from rapidly rotating neutron stars

    E-Print Network [OSTI]

    Numata, Kazutoshi

    2010-01-01T23:59:59.000Z

    We calculate light curves produced by a hot spot of a rapidly rotating neutron star, assuming that the spot is perturbed by a core $r$-mode, which is destabilized by emitting gravitational waves. To calculate light curves, we take account of relativistic effects such as the Doppler boost due to the rapid rotation and light bending assuming the Schwarzschild metric around the neutron star. We assume that the core $r$-modes penetrate to the surface fluid ocean to have sufficiently large amplitudes to disturb the spot. For a $l'=m$ core $r$-mode, the oscillation frequency $\\omega\\approx2m\\Omega/[l'(l'+1)]$ defined in the co-rotating frame of the star will be detected by a distant observer, where $l'$ and $m$ are respectively the spherical harmonic degree and the azimuthal wave number of the mode, and $\\Omega$ is the spin frequency of the star. In a linear theory of oscillation, using a parameter $A$ we parametrize the mode amplitudes such that ${\\rm max}\\left(|\\xi_\\theta|,|\\xi_\\phi|\\right)/R=A$ at the surface, w...

  14. Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios

    E-Print Network [OSTI]

    Meininger, Aaron G.

    2012-01-01T23:59:59.000Z

    Issues: The Environmental Kuznets Curve to Optimal EnergyE. (2005), “An environmental kuznets curve analysis of u.s.proach to environmental kuznets curves using the ecological

  15. Searching for Empirical Regularity and Theoretical Structure: The Environmental Kuznets Curve

    E-Print Network [OSTI]

    Carson, Richard T

    2009-01-01T23:59:59.000Z

    of the environmental Kuznets curve. Journal of Publicof the environmental Kuznets curve studies. Agriculture andhypothesis and environmental Kuznets Curve: examining the

  16. DEVELOPING FLOW AND HEAT TRANSFER IN STRONGLY CURVED DUCTS OF RECTANGULAR CROSS-SECTION

    E-Print Network [OSTI]

    Yee, G.

    2010-01-01T23:59:59.000Z

    DEVELOpiNG FLOW AND HEAT TRANSFER IN STRONGLY CURVED DUCTS9092 Developing Flow and Heat Transfer in Strongly CurvedForced Convection Heat Transfer in Curved Rectangular

  17. Physical modeling of the soil swelling curve vs. the shrinkage curve

    E-Print Network [OSTI]

    V. Y. Chertkov

    2014-04-14T23:59:59.000Z

    Physical understanding of the links between soil swelling, texture, structure, cracking, and sample size is of great interest for the physical understanding of many processes in the soil-air-water system and for applications in civil, agricultural, and environmental engineering. The background of this work is an available chain of interconnected physical shrinkage curve models for clay, intra-aggregate matrix, aggregated soil without cracks, and soil with cracks. The objective of the work is to generalize these models to the case of swelling, and to construct the physical-swelling-model chain with a step-by-step transition from clay to aggregated soil with cracks. The generalization is based on thorough accounting for the analogies and differences between shrinkage and swelling and the corresponding use, modification, or replacement of the soil shrinkage features. Two specific soil swelling features to be used are: (i) air entrapping in pores of the contributing clay; and (ii) aggregate destruction with the formation of new aggregate surfaces. The input for the prediction of the swelling curve of an aggregated soil coincides with that of the available model of the shrinkage curve. The analysis of available data on the maximum shrink-swell cycle of two soils with different texture and structure, accounting for sample size is conducted as applied to swelling curves and to the residual crack volume and maximum-swelling-volume decrease after the shrink-swell cycle. Results of the analysis show evidence in favor of the swelling model chain.

  18. Curved Spacetimes and Curved Graphene: a status report of the Weyl-symmetry approach

    E-Print Network [OSTI]

    Alfredo Iorio

    2014-12-15T23:59:59.000Z

    This is a status report about the ongoing work on the realization of quantum field theory on curved graphene spacetimes that uses Weyl symmetry. The programme is actively pursued from many different perspectives. Here we point to what has been done, and to what needs to be done.

  19. technology offer Vienna University of Technology/ Research and Transfer Support | Hildegard Sieberth

    E-Print Network [OSTI]

    Szmolyan, Peter

    developed. The liquid precursors can be either cured in vivo or printed by additive manufacturing technology be tuned, in-vivo curing or high resolution additive manufacturing is not possible Technology A new

  20. Hydrogen atom on curved noncommutative space

    E-Print Network [OSTI]

    V. G. Kupriyanov

    2013-06-05T23:59:59.000Z

    We have calculated the hydrogen atom spectrum on curved noncommutative space defined by the commutation relations $\\left[ \\hat {x}^{i},\\hat{x}^{j}\\right] =i\\theta\\hat{\\omega}^{ij}\\left( \\hat {x}\\right) $, where $\\theta$ is the parameter of noncommutativity. The external antisymmetric field which determines the noncommutativity is chosen as $\\omega^{ij}(x) =\\varepsilon^{ijk}{x}_{k}f\\left( {x_i}x^{i}\\right) $. In this case the rotational symmetry of the system is conserved, preserving the degeneracy of the energy spectrum. The contribution of the noncommutativity appears as a correction to the fine structure. The corresponding nonlocality is calculated: $\\Delta x\\Delta y \\geq \\frac{\\theta^2}{4} |m\\langle f^2\\rangle| $, where $m$ is a magnetic quantum number.

  1. Remote quantum states in curved spacetime

    E-Print Network [OSTI]

    Charles Francis

    2014-07-06T23:59:59.000Z

    It is seen that issues of the evolution of the wave function in curved spacetime can be resolved by describing the evolution of quantum states in Minkowski tangent space, in accordance with the orthodox interpretation that the wave function is not physical but is part of a mathematical method for the calculation of probabilities of measurement results. The teleconnection is defined between Hilbert spaces at different points in spacetime motivated by arguments from the probability interpretation. The teleconnection is analogous to a connection between vector spaces and reduces to the Levi-Civita connection in the limit of near initial and final measurements. Gravitational redshift is as in classical general relativity, as is the redshift for the cosmological microwave background. An argument is given that the cosmological redshift of photons treated as quantum particles should be treated differently. If correct this argument has important implications for the age of the universe, galaxy evolution and missing matter.

  2. Department of Engineering Technology Technology Education

    E-Print Network [OSTI]

    Bieber, Michael

    Department of Engineering Technology Technology Education A Teacher Education Program New Jersey Institute of Technology #12;WHAT WILL YOU LEARN? Technology teachers teach problem-based learning utilizing math, science and technology principles. Technological studies involve students: · Designing

  3. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 11. There was less emphasis on technology and more on communication and governance structure. Mary will respond as the biggest issues in next few years. Feedback included: Mobility and mobile computing (already behind curve

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

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

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

  5. Vehicle Technologies Office: 2014 Electric Drive Technologies...

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

    Electric Drive Technologies Annual Progress Report Vehicle Technologies Office: 2014 Electric Drive Technologies Annual Progress Report The Electric Drive Technologies research and...

  6. Construction of Fractal Surfaces by Recurrent Fractal Interpolation Curves

    E-Print Network [OSTI]

    Chol-hui Yun; Hyong-chol O.; Hui-chol Choi

    2014-08-12T23:59:59.000Z

    A method to construct fractal surfaces by recurrent fractal curves is provided. First we construct fractal interpolation curves using a recurrent iterated functions system(RIFS) with function scaling factors and estimate their box-counting dimension. Then we present a method of construction of wider class of fractal surfaces by fractal curves and Lipschitz functions and calculate the box-counting dimension of the constructed surfaces. Finally, we combine both methods to have more flexible constructions of fractal surfaces.

  7. Technology '90

    SciTech Connect (OSTI)

    Not Available

    1991-01-01T23:59:59.000Z

    The US Department of Energy (DOE) laboratories have a long history of excellence in performing research and development in a number of areas, including the basic sciences, applied-energy technology, and weapons-related technology. Although technology transfer has always been an element of DOE and laboratory activities, it has received increasing emphasis in recent years as US industrial competitiveness has eroded and efforts have increased to better utilize the research and development resources the laboratories provide. This document, Technology '90, is the latest in a series that is intended to communicate some of the many opportunities available for US industry and universities to work with the DOE and its laboratories in the vital activity of improving technology transfer to meet national needs. Technology '90 is divided into three sections: Overview, Technologies, and Laboratories. The Overview section describes the activities and accomplishments of the DOE research and development program offices. The Technologies section provides descriptions of new technologies developed at the DOE laboratories. The Laboratories section presents information on the missions, programs, and facilities of each laboratory, along with a name and telephone number of a technology transfer contact for additional information. Separate papers were prepared for appropriate sections of this report.

  8. A Curved Boundary Treatment for Discontinuous Galerkin Schemes ...

    E-Print Network [OSTI]

    2015-03-09T23:59:59.000Z

    memory costs in curved elements will be increased due to integration on ...... Optimal energy conserving local ... Springer Science & Business Media, 2009. 23

  9. THE CENTRAL CURVE IN LINEAR PROGRAMMING 1. Introduction ...

    E-Print Network [OSTI]

    2010-12-17T23:59:59.000Z

    Section 2 offers an analysis of central curves in the plane, with emphasis on the dual ...... path is generated by the circuit polynomials (21) and the d linear ...

  10. GRID Technologies => `Education' = `Distance Michalis Xenos

    E-Print Network [OSTI]

    Boyer, Edmond

    GRID Technologies => `Education' = `Distance Education' Michalis Xenos 1,2 , Bill Vassiliadis 1 possibilities that Grid technologies create in education, presents current learning paradigms and makes a prediction about the way in which Grid technologies may affect the future of education. The case

  11. Semistable Models of Curves Resolution of singularities on the tower of modular

    E-Print Network [OSTI]

    Semistable Models of Curves Resolution of singularities on the tower of modular curves Jared on the tower of modular curves #12;Semistable Models of Curves Semistable models: Definition Let R Resolution of singularities on the tower of modular curves #12;Semistable Models of Curves Semistable models

  12. D-Branes in Curved Space

    SciTech Connect (OSTI)

    McGreevy, John Austen; /Stanford U., Phys. Dept.

    2005-07-06T23:59:59.000Z

    This thesis is a study of D-branes in string compactifications. In this context, D-branes are relevant as an important component of the nonperturbative spectrum, as an incisive probe of these backgrounds, and as a natural stringy tool for localizing gauge interactions. In the first part of the thesis, we discuss half-BPS D-branes in compactifications of type II string theory on Calabi-Yau threefolds. The results we describe for these objects are pertinent both in their role as stringy brane-worlds, and in their role as solitonic objects. In particular, we determine couplings of these branes to the moduli determining the closed-string geometry, both perturbatively and non-perturbatively in the worldsheet expansion. We provide a local model for transitions in moduli space where the BPS spectrum jumps, and discuss the extension of mirror symmetry between Calabi-Yau manifolds to the case when D-branes are present. The next section is an interlude which provides some applications of D-branes to other curved backgrounds of string theory. In particular, we discuss a surprising phenomenon in which fundamental strings moving through background Ramond-Ramond fields dissolve into large spherical D3-branes. This mechanism is used to explain a previously-mysterious fact discovered via the AdS-CFT correspondence. Next, we make a connection between type IIA string vacua of the type discussed in the first section and M-theory compactifications on manifolds of G{sub 2} holonomy. Finally we discuss constructions of string vacua which do not have large radius limits. In the final part of the thesis, we develop techniques for studying the worldsheets of open strings ending on the curved D-branes studied in the first section. More precisely, we formulate a large class of massive two-dimensional gauge theories coupled to boundary matter, which flow in the infrared to the relevant boundary conformal field theories. Along with many other applications, these techniques are used to describe world-volume theories of point-like D-probes of various Calabi-Yau threefolds.

  13. NREL: Technology Transfer - Ombuds

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy: Grid IntegrationReport Available forVoucherPossible for0Technology

  14. New possible resonance for population II Cepheids

    SciTech Connect (OSTI)

    Cox, A.N.; Kidman, R.B.

    1984-01-01T23:59:59.000Z

    Light and velocity curves of some radial mode variable stars seem to indicate a resonance where the second overtone has a period exactly half that of the fundamental mode. The two classes of stars that show this resonance by bumps in their light curves are the classical Cepheids and the population II BL Her variables. We here propose that there is another resonance for the population II W Vir variables where the ratio of the first overtone to the fundamental periods is 0.5.

  15. Properties of branes in curved spacetimes

    E-Print Network [OSTI]

    Kostas Skenderis; Marika Taylor

    2003-11-20T23:59:59.000Z

    A generic property of curved manifolds is the existence of focal points. We show that branes located at focal points of the geometry satisfy special properties. Examples of backgrounds to which our discussion applies are AdS_m x S^n and plane wave backgrounds. As an example, we show that a pair of AdS_2 branes located at the north and south pole of the S^5 in AdS_5 x S^5 are half supersymmetric and that they are dual to a two-monopole solution of N=4 SU(N) SYM theory. Our second example involves spacelike branes in the (Lorentzian) plane wave. We develop a modified lightcone gauge for the open string channel, analyze in detail the cylinder diagram and establish open-closed duality. When the branes are located at focal points of the geometry the amplitude acquires most of the characteristics of flat space amplitudes. In the open string channel the special properties are due to stringy modes that become massless.

  16. Ghost condensate model of flat rotation curves

    E-Print Network [OSTI]

    V. V. Kiselev

    2005-07-29T23:59:59.000Z

    An effective action of ghost condensate with higher derivatives creates a source of gravity and mimics a dark matter in spiral galaxies. We present a spherically symmetric static solution of Einstein--Hilbert equations with the ghost condensate at large distances, where flat rotation curves are reproduced in leading order over small ratio of two energy scales characterizing constant temporal and spatial derivatives of ghost field: $\\mu_*^2$ and $\\mu_\\star^2$, respectively, with a hierarchy $\\mu_\\star\\ll \\mu_*$. We assume that a mechanism of hierarchy is provided by a global monopole in the center of galaxy. An estimate based on the solution and observed velocities of rotations in the asymptotic region of flatness, gives $\\mu_*\\sim 10^{19}$ GeV and the monopole scale in a GUT range $\\mu_\\star\\sim 10^{16}$ GeV, while a velocity of rotation $v_0$ is determined by the ratio: $ \\sqrt{2} v_0^2= \\mu_\\star^2/\\mu_*^2$. A critical acceleration is introduced and naturally evaluated of the order of Hubble rate, that represents the Milgrom's acceleration.

  17. Instanton effects and quantum spectral curves

    E-Print Network [OSTI]

    Johan Kallen; Marcos Marino

    2014-04-16T23:59:59.000Z

    We study a spectral problem associated to the quantization of a spectral curve arising in local mirror symmetry. The perturbative WKB quantization condition is determined by the quantum periods, or equivalently by the refined topological string in the Nekrasov-Shatashvili (NS) limit. We show that the information encoded in the quantum periods is radically insufficient to determine the spectrum: there is an infinite series of instanton corrections, which are non-perturbative in \\hbar, and lead to an exact WKB quantization condition. Moreover, we conjecture the precise form of the instanton corrections: they are determined by the standard or un-refined topological string free energy, and we test our conjecture successfully against numerical calculations of the spectrum. This suggests that the non-perturbative sector of the NS refined topological string contains information about the standard topological string. As an application of the WKB quantization condition, we explain some recent observations relating membrane instanton corrections in ABJM theory to the refined topological string.

  18. Calibration curves for some standard Gap Tests

    SciTech Connect (OSTI)

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

    1989-01-01T23:59:59.000Z

    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.

  19. REVISITING THE LIGHT CURVES OF GAMMA-RAY BURSTS IN THE RELATIVISTIC TURBULENCE MODEL

    SciTech Connect (OSTI)

    Lin, Da-Bin; Gu, Wei-Min; Hou, Shu-Jin; Liu, Tong; Sun, Mou-Yuan; Lu, Ju-Fu, E-mail: dabinlin@xmu.edu.cn, E-mail: lujf@xmu.edu.cn [Department of Astronomy and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005 (China)

    2013-10-10T23:59:59.000Z

    Rapid temporal variability has been widely observed in the light curves of gamma-ray bursts (GRBs). One possible mechanism for such variability is related to the relativistic eddies in the jet. In this paper, we include the contribution of the inter-eddy medium together with the eddies to the gamma-ray emission. We show that the gamma-ray emission can either lead or lag behind the observed synchrotron emission, where the latter originates in the inter-eddy medium and provides most of the seed photons for producing gamma-ray emission through inverse Compton scattering. As a consequence, we argue that the lead/lag found in non-stationary short-lived light curves may not reveal the intrinsic lead/lag of different emission components. In addition, our results may explain the lead of gamma-ray emission with respect to optical emission observed in GRB 080319B.

  20. On the vacuum Einstein equations along curves with a discrete local rotational and reflection symmetry

    E-Print Network [OSTI]

    Korzy?ski, Miko?aj; Bentivegna, Eloisa

    2015-01-01T23:59:59.000Z

    We discuss the possibility of a dimensional reduction of the Einstein equations in S3 black-hole lattices. It was reported in previous literature that the evolution of spaces containing curves of local, discrete rotational and reflection Symmetry (LDRRS) can be carried out via a system of ODEs along these curves. However, 3+1 Numerical Relativity computations demonstrate that this is not the case, and we show analytically that this is due to the presence of a tensorial quantity which is not suppressed by the symmetry. We calculate the term analytically, and verify numerically for an 8-black-hole lattice that it fully accounts for the anomalous results, and thus quantify its magnitude in this specific case. The presence of this term prevents the exact evolution of these spaces via previously-reported methods which do not involve a full 3+1 integration of Einstein's equation.

  1. Technology reviews: Daylighting optical systems

    SciTech Connect (OSTI)

    Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

    1992-09-01T23:59:59.000Z

    We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends.Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

  2. Cortical Hemisphere Registration Via Large Deformation Diffeomorphic Metric Curve

    E-Print Network [OSTI]

    Qiu, Anqi

    on the relation between individual brains and the atlas. This is a powerful approach allowing us to study a largeCortical Hemisphere Registration Via Large Deformation Diffeomorphic Metric Curve Mapping Anqi Qiu1 Science, Johns Hopkins University Abstract. We present large deformation diffeomorphic metric curve

  3. Array E Calibration Curves PAGE 1 OF 22

    E-Print Network [OSTI]

    Rathbun, Julie A.

    REV. MO. ATM1095 Array E Calibration Curves PAGE 1 OF 22 DATE 11 April 197 2 This A TM summarizes the scope and contents of the calibration curve data book and calibration magnetic tape which special conversions which are out of scope of the Apollo/Saturn Calibration Tape Format Mod 1; special

  4. HONDA-TATE THEOREM FOR ELLIPTIC CURVES MIHRAN PAPIKIAN

    E-Print Network [OSTI]

    Papikian, Mihran

    HONDA-TATE THEOREM FOR ELLIPTIC CURVES MIHRAN PAPIKIAN 1. Introduction These are the notes from the 2011-12 academic year. Tate's isogeny theorem over finite fields, and the related Honda-Tate theorem theorem and Honda-Tate theorem for elliptic curves, and then to prove these theorems using only tools from

  5. CURVES OF GENUS 2 WITH p 2 MULTIPLICATION

    E-Print Network [OSTI]

    thesis, which looks at curves of genus 2 whose jacobians have p 2 multiplication, with the generalisedCURVES OF GENUS 2 WITH p 2 MULTIPLICATION PETER R. BENDING Abstract We give a universal family, and let f be a newform on \\Gamma 1 (N) whose field of Fourier coefficients is F (F is a totally real field

  6. Fast Multipole Representation of Diffusion Curves and Points Timothy Sun

    E-Print Network [OSTI]

    Grinspun, Eitan

    Fast Multipole Representation of Diffusion Curves and Points Timothy Sun Papoj Thamjaroenporn performed on the fast multipole representation. Abstract We propose a new algorithm for random-access evaluation of diffu- sion curve images (DCIs) using the fast multipole method. Unlike all previous methods

  7. Oil production models with normal rate curves Dudley Stark

    E-Print Network [OSTI]

    Stark, Dudley

    Oil production models with normal rate curves Dudley Stark School of Mathematical Sciences Queen;Abstract The normal curve has been used to fit the rate of both world and U.S.A. oil production sizes are lognormally distributed, and the starting time of the production of a field is approximately

  8. TORSION OF RATIONAL ELLIPTIC CURVES OVER QUADRATIC FIELDS

    E-Print Network [OSTI]

    González, Enrique

    TORSION OF RATIONAL ELLIPTIC CURVES OVER QUADRATIC FIELDS ENRIQUE GONZÁLEZ­JIMÉNEZ AND JOSÉ M the torsion subgroup E(Q)tors and the torsion subgroup E(K)tors, where K is a quadratic number field. 1 of primes that can appear as the order of a torsion point of an elliptic curve E defined over a number field

  9. AVERAGE RANKS OF ELLIPTIC CURVES: TENSION BETWEEN DATA AND CONJECTURE

    E-Print Network [OSTI]

    Stein, William

    curves of conductor X} converge as X tends to infinity, and if so, what is the limit P = lim X PAVERAGE RANKS OF ELLIPTIC CURVES: TENSION BETWEEN DATA AND CONJECTURE BAUR BEKTEMIROV, BARRY MAZUR, and · to list them in order of increasing conductor, banking on the theorem that tells us that there are only

  10. Stochastic Analysis of Wind Turbine Power Curves Edgar Anahua

    E-Print Network [OSTI]

    Peinke, Joachim

    Stochastic Analysis of Wind Turbine Power Curves Edgar Anahua Oldenburg 2007 Zur Homepage der Dissertation #12;#12;Stochastic Analysis of Wind Turbine Power Curves Edgar Anahua Von der Fakult¨at f the wind turbine's power per- formance directly from high frequency fluctuating measurements. In particular

  11. How predictable is technological progress?

    E-Print Network [OSTI]

    Farmer, J Doyne

    2015-01-01T23:59:59.000Z

    Recently it has become clear that many technologies follow a generalized version of Moore's law, i.e. costs tend to drop exponentially, at different rates that depend on the technology. Here we formulate Moore's law as a time series model and apply it to historical data on 53 technologies. Under the simple assumption of a correlated geometric random walk we derive a closed form expression approximating the distribution of forecast errors as a function of time. Based on hind-casting experiments we show that it is possible to collapse the forecast errors for many different technologies at many time horizons onto the same universal distribution. As a practical demonstration we make distributional forecasts at different time horizons for solar photovoltaic modules, and show how our method can be used to estimate the probability that a given technology will outperform another technology at a given point in the future.

  12. Technological and institutional `lock-in' as a barrier to sustainable Timothy J. Foxon,

    E-Print Network [OSTI]

    a technology has large set-up or fixed costs, unit production costs decline as these as spread over increasing production volume. Thus, an existing technology often has significant `sunk costs' from earlier investments, learning curves have been empirically demonstrated for a number of technologies, showing unit costs

  13. On the extension of Newton's second law to theories of gravitation in curved space-time

    E-Print Network [OSTI]

    Mayeul Arminjon

    2006-09-14T23:59:59.000Z

    We investigate the possibility of extending Newton's second law to the general framework of theories in which special relativity is locally valid, and in which gravitation changes the flat Galilean space-time metric into a curved metric. This framework is first recalled, underlining the possibility to uniquely define a space metric and a local time in any given reference frame, hence to define velocity and momentum in terms of the local space and time standards. It is shown that a unique consistent definition can be given for the derivative of a vector (the momentum) along a trajectory. Then the possible form of the gravitation force is investigated. It is shown that, if the motion of free particles has to follow space-time geodesics, then the expression for the gravity acceleration is determined uniquely. It depends on the variation of the metric with space and time, and it involves the velocity of the particle.

  14. FUEL CELL TECHNOLOGIES PROGRAM Technologies

    E-Print Network [OSTI]

    and fuel cells offer great promise for our energy future. Fuel cell vehicles are not yet commercially, such as a hydrogen fueling station or hydrogen fuel cell vehicle. Technology validation does not certify, and the Federal Government to evaluate hydrogen fuel cell vehicle and infrastructure technologies together in real

  15. Progress Report on Alloy 617 Isochronous Stress-Strain Curves

    SciTech Connect (OSTI)

    Jill K. Wright; Richard N. Wright; Nancy J. Lybeck

    2014-03-01T23:59:59.000Z

    Isochronous stress-strain curves for Alloy 617 up to a temperature of 1000°C will be required to qualify the material for elevated temperature design in Section III, Division 1, Subsection NH of the ASME Boiler and Pressure Vessel Code. Several potential methods for developing these curves are reviewed in this report. It is shown that in general power-law creep is the rate controlling deformation mechanism for a wide range of alloy heats, test temperatures and stresses. Measurement of the strain rate sensitivity of Alloy 617 indicates that the material is highly strain rate sensitive in the tensile deformation range above about 750°C. This suggests that the concept of a hot tensile curve as a bounding case on the isochronous stress-strain diagrams is problematic. The impact of strain rate on the hot tensile curves is examined and it is concluded that incorporating such a curve is only meaningful if a single tensile strain rate (typically the ASTM standard rate of 0.5%/min) is arbitrarily defined. Current experimentally determined creep data are compared to isochronous stress-strain curves proposed previously by the German programs in the 1980s and by the 1990 draft ASME Code Case. Variability in how well the experimental data are represented by the proposed design curves that suggests further analysis is necessary prior to completing a new draft Code Case.

  16. The Present, Mid-Term, and Long-Term Supply Curves for Tellurium; and Updates in the Results from NREL's CdTe PV Module Manufacturing Cost Model (Presentation)

    SciTech Connect (OSTI)

    Woodhouse, M.; Goodrich, A.; Redlinger, M.; Lokanc, M.; Eggert, R.

    2013-09-01T23:59:59.000Z

    For those PV technologies that rely upon Te, In, and Ga, first-order observations and calculations hint that there may be resource constraints that could inhibit their successful deployment at a SunShot level. These are only first-order approximations, however, and the possibility for an expansion in global Te, In, and Ga supplies needs to be considered in the event that there are upward revisions in their demand and prices.In this study, we examine the current, mid-term, and long-term prospects of Tellurium (Te) for use in PV. We find that the current global supply base of Te would support <10 GW of annual traditional CdTe PV manufacturing production. But as for the possibility that the supply base for Te might be expanded, after compiling several preliminary cumulative availability curves we find that there may be significant upside potential in the supply base for this element - principally vis a vis increasing demand and higher prices. Primarily by reducing the Tellurium intensity in manufacturing and by increasing the recovery efficiency of Te in Cu refining processes, we calculate that it may prove affordable to PV manufacturers to expand the supply base for Te such that 100 GW, or greater, of annual CdTe PV production is possible in the 2030 - 2050 timeframe.

  17. The galactic double-mode Cepheids I. Frequency analysis of the light curves and comparison with single-mode Cepheids

    E-Print Network [OSTI]

    Ennio Poretti; Ilaria Pardo

    1996-12-05T23:59:59.000Z

    We submitted the available photometric V data of all the known galactic Double Mode Cepheids (DMCs) to a careful frequency analysis with the aim of detecting in each case the importance of the harmonics and of the cross coupling terms. For each object, starting from different data subsets, we progressively built a homogenous set of data, checking the consistency of the results step by step. It was demonstrated that each star displays a different content, showing that no a priori fit can be applied. Up to 4 harmonics were found for the fundamental radial mode (F); in every case, 2 harmonics were found for the first overtone radial mode (1 O). We also proceeded to a preliminar analysis of the Fourier parameters of the DMC light curves and we found a very close similarity between i) the light curves of the Classical Cepheids and those of the F-mode of the DMCs; ii) the light curves of the s-Cepheids and those of the 1 O-mode of the DMCs. The analysis of DMC light curves offers the possibility of unifying the light curves of Classical and s-Cepheids. The case of the unique DMC CO Aur is also discussed.

  18. Instanton solutions mediating tunneling between the degenerate vacua in curved space

    SciTech Connect (OSTI)

    Lee, Bum-Hoon; Lee, Wonwoo [Department of Physics and BK21 Division, and Center for Quantum Spacetime, Sogang University, Seoul 121-742 (Korea, Republic of); Lee, Chul H. [Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of); Oh, Changheon [Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of); Principal Researcher Center, Technovation Partners, Seoul 135-824 (Korea, Republic of)

    2010-07-15T23:59:59.000Z

    We investigate the instanton solution between the degenerate vacua in curved space. We show that there exist O(4)-symmetric solutions not only in de Sitter but also in both flat and anti-de Sitter space. The geometry of the new type of solutions is finite and preserves the Z{sub 2} symmetry. The nontrivial solution corresponding to the tunneling is possible only if gravity is taken into account. The numerical solutions as well as the analytic computations using the thin-wall approximation are presented. We expect that these solutions do not have any negative mode as in the instanton solution.

  19. Application of the decline curve method to aquifers

    E-Print Network [OSTI]

    Potnis, Girish Vijay

    1992-01-01T23:59:59.000Z

    k = value of pointin time = value of point in time n = value of point in time 39 REFERENCES 1. Fetkovich, M. J. : "Decline Curve Analysis Using Type Curves, " JPT (June 1980) 1065-1077. 2. Havlena, D. and Odeh, A. S. : "The Material Balance...APPLICATION OF THE DECLINE CURVE METHOD TO AQUIFERS A Thesis by GIRISH VIJAY POTNIS Submitted to the Office of Graduate Studies of Texas ADAM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December...

  20. Bolometric and UV light curves of core-collapse supernovae

    SciTech Connect (OSTI)

    Pritchard, T. A.; Roming, P. W. A. [Department of Astronomy and Astrophysics, Penn State University, 525 Davey Lab, University Park, PA 16802 (United States); Brown, Peter J. [Department of Physics and Astronomy, George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A. and M. University, 4242 TAMU, College Station, TX 77843 (United States); Bayless, Amanda J. [Southwest Research Institute, Department of Space Science, 6220 Culebra Road, San Antonio, TX 78238 (United States); Frey, Lucille H. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2014-06-01T23:59:59.000Z

    The Swift UV-Optical Telescope (UVOT) has been observing core-collapse supernovae (CCSNe) of all subtypes in the UV and optical since 2005. Here we present 50 CCSNe observed with the Swift UVOT, analyzing their UV properties and behavior. Where we have multiple UV detections in all three UV filters (? {sub c} = 1928-2600 Å), we generate early time bolometric light curves, analyze the properties of these light curves and the UV contribution to them, and derive empirical corrections for the UV-flux contribution to optical-IR based bolometric light curves.

  1. Exhaustive search system and method using space-filling curves

    DOE Patents [OSTI]

    Spires, Shannon V.

    2003-10-21T23:59:59.000Z

    A search system and method for one agent or for multiple agents using a space-filling curve provides a way to control one or more agents to cover an area of any space of any dimensionality using an exhaustive search pattern. An example of the space-filling curve is a Hilbert curve. The search area can be a physical geography, a cyberspace search area, or an area searchable by computing resources. The search agent can be one or more physical agents, such as a robot, and can be software agents for searching cyberspace.

  2. Estimating type curve parameters with the cumulative curvature method

    E-Print Network [OSTI]

    Harris, Dan Edward

    1986-01-01T23:59:59.000Z

    curvature of Ramey type curves at a forward span of 40'$ . 32 15 Cumulative curvature of Ramey type curves at a forward span of 50$ . 33 16 Cumulative curvature of Ramey type curves at a forward span of 60$ 34 ix LIST OF FIGURES icontinued) 17..."wand spans ranging f;om 15$ to 60$ are presented in Figure 10 through 12. Since data that bately reaches past the end of the unit slope region is too vague even for this technique, the graph with a forward span of 0$ to 15$ is omitied here because...

  3. What's Possible at WID? Video transcript

    E-Print Network [OSTI]

    Willett, Rebecca

    use 3D printing technology to represent these texts, but also now? Society is going through many changes. We have energy crises, population

  4. POSSIBILITIES for OYSTER CULTURE in PUERTO RICO

    E-Print Network [OSTI]

    POSSIBILITIES for OYSTER CULTURE in PUERTO RICO and the VIRGIN ISLANDS Marine Bioio 'i- «I FEB 1 3 OF THE INTERIOR FISH AND WILDLIFE SERVICE ^ #12;#12;POSSIBILITIES for OYSTER CULTURE in PUERTO RICO and the VIRGIN, Director Special Soientiflo Report - Fisheries No. 9 POSSIBILITIES FOR OYSTER CULTURE IN PUERTO RICO

  5. Low surface brightness galaxies rotation curves in the low energy limit of $R^n$ gravity : no need for dark matter?

    E-Print Network [OSTI]

    S. Capozziello; V. F. Cardone; A. - Troisi

    2006-12-13T23:59:59.000Z

    We investigate the possibility that the observed flatness of the rotation curves of spiral galaxies is not an evidence for the existence of dark matter haloes, but rather a signal of the breakdown of General Relativity. To this aim, we consider power - law fourth order theories of gravity obtained by replacing the scalar curvature $R$ with $f(R) = f_0 R^n$ in the gravity Lagrangian. We show that, in the low energy limit, the gravitational potential generated by a pointlike source may be written as $\\Phi(r) \\propto r^{-1} \\left [ 1 + (r/r_c)^{\\beta} \\right ]$ with $\\beta$ a function of the slope $n$ of the gravity Lagrangian and $r_c$ a scalelength depending on the gravitating system properties. In order to apply the model to realistic systems, we compute the modified potential and the rotation curve for spherically symmetric and for thin disk mass distributions. It turns out that the potential is still asymptotically decreasing, but the corrected rotation curve, although not flat, is higher than the Newtonian one thus offering the possibility to fit rotation curves without dark matter. To test the viability of the model, we consider a sample of 15 low surface brightness (LSB) galaxies with combined HI and H$\\alpha$ measurements of the rotation curve extending in the putative dark matter dominated region. We find a very good agreement between the theoretical rotation curve and the data using only stellar disk and interstellar gas.

  6. Quantifying the economic potential of a biomass to olefin technology

    E-Print Network [OSTI]

    Chiang, Nicholas (Nicholas Kuang Hua)

    2005-01-01T23:59:59.000Z

    Oil is one of the most valuable natural resources in the world. Any technology that could possibly be used to conserve oil is worth studying. Biomass waste to olefin (WTO) technology replaces the use of oil as a feedstock. ...

  7. Investigating successful implementation of technologies in Developing nations

    E-Print Network [OSTI]

    Hsieh, Edward F. (Edward Fang)

    2005-01-01T23:59:59.000Z

    A study was performed to determine possible factors that contribute to successful implementation of new technologies in developing nations. Engineers and other inventors have devoted great effort to Appropriate Technology ...

  8. Nanotechnology at Maryland Nanotechnologies technologies using the special

    E-Print Network [OSTI]

    Hill, Wendell T.

    Nanotechnology at Maryland Nanotechnologies ­ technologies using the special properties the possibilities of nanotechnology. The center, led by founding Director Gary Rubloff, is an interdisciplinary-of-the-art facilities, guides nanotechnology ducation initiatives, and promotes technology transfer from the university

  9. Physical modeling of the soil swelling curve vs. the shrinkage curve

    E-Print Network [OSTI]

    Chertkov, V Y

    2014-01-01T23:59:59.000Z

    Physical understanding of the links between soil swelling, texture, structure, cracking, and sample size is of great interest for the physical understanding of many processes in the soil-air-water system and for applications in civil, agricultural, and environmental engineering. The background of this work is an available chain of interconnected physical shrinkage curve models for clay, intra-aggregate matrix, aggregated soil without cracks, and soil with cracks. The objective of the work is to generalize these models to the case of swelling, and to construct the physical-swelling-model chain with a step-by-step transition from clay to aggregated soil with cracks. The generalization is based on thorough accounting for the analogies and differences between shrinkage and swelling and the corresponding use, modification, or replacement of the soil shrinkage features. Two specific soil swelling features to be used are: (i) air entrapping in pores of the contributing clay; and (ii) aggregate destruction with the f...

  10. Small distance expansion for radiative heat transfer between curved objects

    E-Print Network [OSTI]

    Golyk, Vladyslav A.

    We develop a small distance expansion for the radiative heat transfer between gently curved objects, in terms of the ratio of distance to radius of curvature. A gradient expansion allows us to go beyond the lowest-order ...

  11. On spontaneous emission into guided modes with curved wavefronts

    SciTech Connect (OSTI)

    Yariv, A.; Margalit, S.

    1982-11-01T23:59:59.000Z

    The problem of spontaneous emission into guided modes with curved wavefronts is examined quantum mechanically. A classical result due to Petermann, which shows an increased emission rate relative to modes with planar phase fronts, is corroborated.

  12. astronomical light curves: Topics by E-print Network

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

    the majority of the light curves e.g. active galactic nuclei, X-ray binaries, gamma-ray bursts show strong deviations from Gaussianity exhibiting burst-like' events in their...

  13. Technology Application Centers: Facilitating Technology Transfer

    E-Print Network [OSTI]

    Kuhel, G. J.

    's approach to technology deployment seeks to blend an industrial customer's priorities with the utility's marketing and customer service objectives. A&C Enercom sees technology deployment as the sum of an equation: technology deployment equals technology...

  14. Application of the decline curve method to aquifers 

    E-Print Network [OSTI]

    Potnis, Girish Vijay

    1992-01-01T23:59:59.000Z

    APPLICATION OF THE DECLINE CURVE METHOD TO AQUIFERS A Thesis by GIRISH VIJAY POTNIS Submitted to the Office of Graduate Studies of Texas ADAM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December... 1992 Major Subject: Petroleum Engineering APPLICATION OF THE DECLINE CURVE METHOD TO AQUIFERS A Thesis by GIRISH VIJAY POTNIS Approved as to style and content by: Steven W. Poston (Chair of Committee) Thomas . Blasingame (member) James E...

  15. Environmental Kuznets Curve for carbon dioxide emissions: lack of robustness to heterogeneity?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Environmental Kuznets Curve for carbon dioxide emissions: lack of robustness to heterogeneity applying the iterative Bayesian shrinkage procedure. The environmental Kuznets curve (EKC) hypothesis. Keywords: Environmental Kuznets curve; Bayesian shrinkage estimator; Heterogeneity JEL classification: O13

  16. Determination of the Price-Load Curve by Using Smoothing Splines Under Tension

    E-Print Network [OSTI]

    Determination of the Price-Load Curve by Using Smoothing Splines Under Tension Master Thesis 4.2. Price-Load Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 4 load and price . . . . . . . . . . . . . . . . . . . . . . 6 1.5. Merit order curve with operating

  17. FEMP/NTDP Technology Focus New Technology

    E-Print Network [OSTI]

    FEMP/NTDP Technology Focus New Technology Demonstration Program Technology Focus FEMPFederal Energy Management Program Trends in Energy Management Technology: BCS Integration Technologies ­ Open Communications into a complete EMCIS. The first article [1] covered enabling technologies for emerging energy management systems

  18. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.

    2007-01-01T23:59:59.000Z

    Pulverized Coal Installed Capacity (GW) World - subcriticalPulverized Coal Installed Capacity (GW) U.S. - subcriticalred plants’ annual installed capacity (in GW/year) by type

  19. Learning curves for environmental technology and their importance for climate policy analysis

    E-Print Network [OSTI]

    Rubin, Edward S.; Taylor, Margaret R; Yeh, Sonia; Hounshell, David A.

    2007-01-01T23:59:59.000Z

    O removal) vs. cumulative installed capacity worldwide. AllService Fig. 1. Cumulative installed capacity of wet lime orto be the cumulative installed capacity for power plants), b

  20. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S

    2007-01-01T23:59:59.000Z

    11. Average coal steam plant non-fuel O&M cost (adjusted forU.S. coal-burning power plants found that real capital costnon-fuel O&M cost 4 per kW h for coal plants fell by 32% at

  1. Learning curves for environmental technology and their importance for climate policy analysis

    E-Print Network [OSTI]

    Rubin, Edward S.; Taylor, Margaret R; Yeh, Sonia; Hounshell, David A.

    2007-01-01T23:59:59.000Z

    control costs of coal-fired power-plants. Environmentalcapital costs for a standardized coal- fired power plant (capital costs for a standardized coal-fired plant (500 MW,

  2. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S

    2007-01-01T23:59:59.000Z

    from the U.S. Energy Information Administration (EIA) [26] (Washington, DC: Energy Information Administration, U.S.of Energy, Energy Information Administration; 2004. See

  3. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.

    2007-01-01T23:59:59.000Z

    components of a steam-generating plant to re?ect changes incost reduction of new generating plants prior to the 1970splants may reach 46.4% (HHV) when the estimated worldwide installed coal-?red generating

  4. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward

    2007-01-01T23:59:59.000Z

    Whitman index for steam- generating construction costs [59]Whitman index of public utility construction costs. Whitman,

  5. A centurial history of technological change and learning curves or pulverized coal-fired utility boilers

    E-Print Network [OSTI]

    Yeh, Sonia; Rubin, Edward S.

    2007-01-01T23:59:59.000Z

    International Energy Agency’s Clean Coal Centre CoalPower5Press; 2002. [25] IEA Clean Coal Centre. CoalPower5 (CD-from fossil fuels. In: IEA clean coal conference, Sardinia,

  6. Possible mechanism of adhesion in a mica supported phospholipid bilayer

    SciTech Connect (OSTI)

    Pertsin, Alexander, E-mail: ig3@ix.urz.uni-heidelberg.de [Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, 69120 Heidelberg (Germany) [Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, 69120 Heidelberg (Germany); Institute of Organo-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, 117991 Moscow (Russian Federation); Grunze, Michael [Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, 69120 Heidelberg (Germany) [Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, 69120 Heidelberg (Germany); Institute for Functional Interfaces, Karlsruhe Institute of Technology, Hermann-von- Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)

    2014-05-14T23:59:59.000Z

    Phospholipid bilayers supported on hydrophilic solids like silica and mica play a substantial role in fundamental studies and technological applications of phospholipid membranes. In both cases the molecular mechanism of adhesion between the bilayer and the support is of primary interest. Since the possibilities of experimental methods in this specific area are rather limited, the methods of computer simulation acquire great importance. In this paper we use the grand canonical Monte Carlo technique and an atomistic force field to simulate the behavior of a mica supported phospholipid bilayer in pure water as a function of the distance between the bilayer and the support. The simulation reveals a possible adhesion mechanism, where the adhesion is due to individual lipid molecules that protrude from the bilayer and form widely spaced links with the support. Simultaneously, the bilayer remains separated from the bilayer by a thin water interlayer which maintains the bilayer fluidity.

  7. (Environmental technology)

    SciTech Connect (OSTI)

    Boston, H.L.

    1990-10-12T23:59:59.000Z

    The traveler participated in a conference on environmental technology in Paris, sponsored by the US Embassy-Paris, US Environmental Protection Agency (EPA), the French Environmental Ministry, and others. The traveler sat on a panel for environmental aspects of energy technology and made a presentation on the potential contributions of Oak Ridge National Laboratory (ORNL) to a planned French-American Environmental Technologies Institute in Chattanooga, Tennessee, and Evry, France. This institute would provide opportunities for international cooperation on environmental issues and technology transfer related to environmental protection, monitoring, and restoration at US Department of Energy (DOE) facilities. The traveler also attended the Fourth International Conference on Environmental Contamination in Barcelona. Conference topics included environmental chemistry, land disposal of wastes, treatment of toxic wastes, micropollutants, trace organics, artificial radionuclides in the environment, and the use biomonitoring and biosystems for environmental assessment. The traveler presented a paper on The Fate of Radionuclides in Sewage Sludge Applied to Land.'' Those findings corresponded well with results from studies addressing the fate of fallout radionuclides from the Chernobyl nuclear accident. There was an exchange of new information on a number of topics of interest to DOE waste management and environmental restoration needs.

  8. SELECTING INFORMATION TECHNOLOGY SECURITY

    E-Print Network [OSTI]

    April 2004 SELECTING INFORMATION TECHNOLOGY SECURITY PRODUCTS Shirley Radack, Editor Computer Security Division Information Technology Laboratory National Institute of Standards and Technology Information technology security prod ucts are essential to better secure infor mation technology (IT) systems

  9. HEMISPHERIC CENTER FOR ENVIRONMENTAL TECHNOLOGY

    SciTech Connect (OSTI)

    M.A. Ebadian

    1999-01-31T23:59:59.000Z

    FIU-HCET participated in an ICT meeting at Mound during the second week of December and presented a brief videotape of the testing of the Robotic Climber technology. During this meeting, FIU-HCET proposed the TechXtract technology for possible testing at Mound and agreed to develop a five-page proposal for review by team members. FIU-HCET provided assistance to Bartlett Inc. and General Lasertronics Corporation in developing a proposal for a Program Opportunity Notice (PON). The proposal was submitted by these companies on January 5, 1999. The search for new equipment dismantlement technologies is continuing. The following vendors have responded to requests for demonstration: LUMONICS, Laser Solutions technology; CRYO-BEAM, Cryogenic cutting technology; Waterjet Technology Association, Waterjet Cutting technology; and DIAJET, Waterjet Cutting technology. Based on the tasks done in FY98, FIU-HCET is working closely with Numatec Hanford Corporation (NHC) and Pacific Northwest National Laboratory (PNNL) to revise the plan and scope of work of the pipeline plugging project in FY99, which involves activities of lab-scale flow loop experiments and a large-scale demonstration test bed.

  10. Possibility for irradiated beryllium at CERN

    E-Print Network [OSTI]

    McDonald, Kirk

    Possibility for irradiated beryllium at CERN RaDIATE meeting, 22nd July 2013 M. Calviani (CERN ­ Engineering Department ­ Sources, Target and Interactions Group) #12;Irradiated beryllium at CERN 2 Two possibilities exists at CERN to obtain irradiated beryllium for testing: beam windows, and in particular

  11. Technology disrupted

    SciTech Connect (OSTI)

    Papatheodorou, Y. [CH2M Hill (United States)

    2007-02-15T23:59:59.000Z

    Three years ago, the author presented a report on power generation technologies which in summary said 'no technology available today has the potential of becoming transformational or disruptive in the next five to ten years'. In 2006 the company completed another strategic view research report covering the electric power, oil, gas and unconventional energy industries and manufacturing industry. This article summarises the strategic view findings and then revisits some of the scenarios presented in 2003. The cost per megawatt-hour of the alternatives is given for plants ordered in 2005 and then in 2025. The issue of greenhouse gas regulation is dealt with through carbon sequestration and carbon allowances or an equivalent carbon tax. Results reveal substantial variability through nuclear power, hydro, wind, geothermal and biomass remain competitive through every scenario. Greenhouse gas scenario analysis shows coal still be viable, albeit less competitive against nuclear and renewable technologies. A carbon tax or allowance at $24 per metric ton has the same effect on IGCC cost as a sequestration mandate. However, the latter would hurt gas plants much more than a tax or allowance. Sequestering CO{sub 2} from a gas plant is almost as costly per megawatt-hour as for coal. 5 refs., 5 figs., 5 tabs.

  12. Emerging technologies

    SciTech Connect (OSTI)

    Lu, Shin-yee

    1993-03-01T23:59:59.000Z

    The mission of the Emerging Technologies thrust area at Lawrence Livermore National Laboratory is to help individuals establish technology areas that have national and commercial impact, and are outside the scope of the existing thrust areas. We continue to encourage innovative ideas that bring quality results to existing programs. We also take as our mission the encouragement of investment in new technology areas that are important to the economic competitiveness of this nation. In fiscal year 1992, we have focused on nine projects, summarized in this report: (1) Tire, Accident, Handling, and Roadway Safety; (2) EXTRANSYT: An Expert System for Advanced Traffic Management; (3) Odin: A High-Power, Underwater, Acoustic Transmitter for Surveillance Applications; (4) Passive Seismic Reservoir Monitoring: Signal Processing Innovations; (5) Paste Extrudable Explosive Aft Charge for Multi-Stage Munitions; (6) A Continuum Model for Reinforced Concrete at High Pressures and Strain Rates: Interim Report; (7) Benchmarking of the Criticality Evaluation Code COG; (8) Fast Algorithm for Large-Scale Consensus DNA Sequence Assembly; and (9) Using Electrical Heating to Enhance the Extraction of Volatile Organic Compounds from Soil.

  13. Venus Technology Plan Venus Technology Plan

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Venus Technology Plan May 2014 #12; ii Venus Technology Plan At the Venus Exploration Survey priorities, and (3) develop a Technology Plan for future Venus missions (after a Technology Forum at VEXAG Meeting 11 in November 2013). Here, we present the 2014 Venus Technology Plan

  14. Automatic generation and analysis of solar cell IV curves

    SciTech Connect (OSTI)

    Kraft, Steven M.; Jones, Jason C.

    2014-06-03T23:59:59.000Z

    A photovoltaic system includes multiple strings of solar panels and a device presenting a DC load to the strings of solar panels. Output currents of the strings of solar panels may be sensed and provided to a computer that generates current-voltage (IV) curves of the strings of solar panels. Output voltages of the string of solar panels may be sensed at the string or at the device presenting the DC load. The DC load may be varied. Output currents of the strings of solar panels responsive to the variation of the DC load are sensed to generate IV curves of the strings of solar panels. IV curves may be compared and analyzed to evaluate performance of and detect problems with a string of solar panels.

  15. Electromagnetic field limits set by the V-Curve.

    SciTech Connect (OSTI)

    Warne, Larry Kevin; Jorgenson, Roy Eberhardt; Hudson, Howard Gerald

    2014-07-01T23:59:59.000Z

    When emitters of electromagnetic energy are operated in the vicinity of sensitive components, the electric field at the component location must be kept below a certain level in order to prevent the component from being damaged, or in the case of electro-explosive devices, initiating. The V-Curve is a convenient way to set the electric field limit because it requires minimal information about the problem configuration. In this report we will discuss the basis for the V-Curve. We also consider deviations from the original V-Curve resulting from inductive versus capacitive antennas, increases in directivity gain for long antennas, decreases in input impedance when operating in a bounded region, and mismatches dictated by transmission line losses. In addition, we consider mitigating effects resulting from limited antenna sizes.

  16. A systematic study of the inner rotation curves of galaxies observed as part of the GASS and COLD GASS surveys

    E-Print Network [OSTI]

    Kauffmann, Guinevere; Moran, Sean; Heckman, Timothy

    2015-01-01T23:59:59.000Z

    We present a systematic analysis of the rotation curves of 187 galaxies with masses greater than 10^10 M_sol, with atomic gas masses from the GALEX Arecibo Sloan Survey (GASS), and with follow-up long-slit spectroscopy from the MMT. Our analysis focuses on stellar rotation curves derived by fitting stellar template spectra to the galaxy spectra binned along the slit. In this way, we are able to obtain accurate rotation velocity measurements for a factor of 2 more galaxies than possible with the Halpha line. Galaxies with high atomic gas mass fractions are the most dark-matter dominated galaxies in our sample and have dark matter halo density profiles that are well fit by Navarro, Frenk & White profiles with an average concentration parameter of 10. The inner slopes and of the rotation curves correlate more strongly with stellar population age than with galaxy mass or structural parameters. At fixed stellar mass, the rotation curves of more actively star-forming galaxies have steeper inner slopes than less...

  17. Fuel Cell Technologies Office Science and Technology Policy Fellowship...

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

    Cell Technologies Office Science and Technology Policy Fellowship Opportunities Available Fuel Cell Technologies Office Science and Technology Policy Fellowship Opportunities...

  18. A Table of Areas Under Disease Progress Curves

    E-Print Network [OSTI]

    Johnson, Dennis A.; Wilcoxson, Roy D.

    1980-01-01T23:59:59.000Z

    [Blank Page in Original Bulletin] A TABLE OF AREAS UNDER DISEASE PROGRESS CURVES Technical Bullet in Texas Agricultural Experiment Station Texas A & M University System- [Blank Page in Original Bulletin] A TABLE OF AREAS UNDER D I S E A S E... Chillicothe-Vernon, TX 76384; and Professor Department of Plant Pathology University of Minnesota St. Paul, MN 55108 A T a b l e o f A r e a s Under D i s e a s e P r o g r e s s Curves 3 Denn i s A. J o h n s o n and Roy D . \\ W i l c o x s o...

  19. The Fusion Curve of Ammonia and Ethyl Alcohol

    E-Print Network [OSTI]

    Broderson, H.J.

    1911-01-01T23:59:59.000Z

    ’ Center for Digital Scholarship. http://kuscholarworks.ku.edu Submitted to the Graduate School of the University of Kansas for partial completion of Master of Arts. THE FUSION CURVE OF AMMONIA AND ETHYL ALCOHOL H. J. BRODERSON THE 2?03IOH CUHVB OP... AMMOHIA AND ETHXL ALCOHOL. A part of the requirement for the lh A. 2)egree. By K. J. Brodereon, University of Kangaa, May 1911, THE PUSIOB CURVS OP AliKOHlA AHD ETHYL ALCOHOL* Only within tho last fow ycara has any worlc boon done on tho fusion...

  20. Fitting the Galaxy Rotation Curves: Strings versus NFW profile

    E-Print Network [OSTI]

    Yeuk-Kwan E. Cheung; Feng Xu

    2008-10-14T23:59:59.000Z

    Remarkable fit of galaxy rotation curves is achieved using a simple model from string theory. The rotation curves of the same group of galaxies are also fit using dark matter model with the generalized Navarro-Frenk-White profile for comparison. String model utilizes three free parameters vs five in the dark matter model. The average chi-squared of the string model fit is 1.649 while that of the dark matter model is 1.513. The generalized NFW profile fits marginally better at a price of two more free parameters.

  1. Waste heat recovery steam curves with unfired HRSGs

    SciTech Connect (OSTI)

    Not Available

    1993-01-01T23:59:59.000Z

    A compilation of waste heat recovery steam curves for a sampling of gas turbines ranging in output from around 1 MW to more than 200 MW is presented. The gas turbine output data shown with each set of curves differs from the values given in the Performance Specifications section of the Handbook. That's because the values have been calculated to reflect the effects of a 4 inch inlet and 10 inch outlet pressure drop on power output (lower), heat rate (higher), mass flow (higher), and exhaust temperature (higher).

  2. The outer rotation curve of the Milky Way

    E-Print Network [OSTI]

    James Binney; Walter Dehnen

    1996-12-05T23:59:59.000Z

    A straightforward determination of the circular-speed curve vc(R) of the Milky Way suggests that near the Sun, vc starts to rise approximately linearly with R. If this result were correct, the Galactic mass density would have to be independent of radius at R ~> R0. We show that the apparent linear rise in v_c arises naturally if the true circular-speed curve is about constant or gently falling at R0 1.25 R0 are actually concentrated into a ring of radius ~1.6 R0.

  3. A SECOND LOOK AT THE SAFETY EFFECTIVENESS OF THE MYRTLE CREEK ADVANCED CURVE WARNING SYSTEM

    E-Print Network [OSTI]

    Bertini, Robert L.

    -1- A SECOND LOOK AT THE SAFETY EFFECTIVENESS OF THE MYRTLE CREEK ADVANCED CURVE WARNING SYSTEM as the "Myrtle Creek Curves." This location consists of a series of curves which have continually been a notable. The curves are located in a 50 mile per hour (mph) speed zone and are posted with an advisory speed of 45 mph

  4. A Comparison of Vehicle Speed at Day and Night Rural Horizontal Curves

    E-Print Network [OSTI]

    Quaium, Ridwan B.

    2010-07-14T23:59:59.000Z

    This thesis documents the linear mixed model developed for vehicle speed along two-lane two-way rural horizontal curves in the outside lane. Speed data at each curve was collected at four points along the curve including the midpoint of the curve...

  5. Four-Point Curve Subdivision Based on Iterated Chordal and Centripetal

    E-Print Network [OSTI]

    Zachmann, Gabriel

    Richter (Technical Computer Science) Prof. Dr. Gabriel Zachmann (Computer Graphics) #12;Four-Point Curve

  6. Fatigue threshold R-curves for predicting reliability of ceramics under cyclic loading

    E-Print Network [OSTI]

    Ritchie, Robert

    Fatigue threshold R-curves for predicting reliability of ceramics under cyclic loading J.J. Kruzic for the prediction of reliability in bridging ceramics under cyclic loading conditions based on a fatigue threshold R-curve threshold R-curve may express this crack-size dependence, analogous to the traditional fracture toughness R-curve

  7. A Comparison of Vehicle Speed at Day and Night Rural Horizontal Curves 

    E-Print Network [OSTI]

    Quaium, Ridwan B.

    2010-07-14T23:59:59.000Z

    This thesis documents the linear mixed model developed for vehicle speed along two-lane two-way rural horizontal curves in the outside lane. Speed data at each curve was collected at four points along the curve including the midpoint of the curve...

  8. Technology and the Box

    E-Print Network [OSTI]

    Maitland, Padma

    2013-01-01T23:59:59.000Z

    its explorations of technology in partnership with radicalPadma Maitland Technology and the Box The room is thedisciplines. The theme of “Technology and the Box” emerged

  9. Hydrogen Technologies Group

    SciTech Connect (OSTI)

    Not Available

    2008-03-01T23:59:59.000Z

    The Hydrogen Technologies Group at the National Renewable Energy Laboratory advances the Hydrogen Technologies and Systems Center's mission by researching a variety of hydrogen technologies.

  10. Innovation and Transportation's Technologies

    E-Print Network [OSTI]

    Garrison, William L.

    2001-01-01T23:59:59.000Z

    decision making. Innovation and technology lock-in hasStage 1 imagine the innovation and technology developmentof emphasizing innovation and technology development. Pull

  11. Requirements, possible alternatives & international NEUTRON SCATTERING

    E-Print Network [OSTI]

    Dimeo, Robert M.

    Requirements, possible alternatives & international NEUTRON SCATTERING DETECTORS for Rob Dimeo NIST neutron scattering instruments are the most demanding require background low #12;#12;The Helium-3 Supply Crisis ­ Alternative Techniques to Helium-3 based Detectors for Neutron Scattering Applications

  12. TECHNOLOGY FORUM

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic| Department of Energy 51:Cross-Site66 -Topic Groups TECHNOLOGY

  13. Vehicle Technologies Office: 2009 Advanced Vehicle Technology...

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

    Well-to-Wheels Analysis of Energy Use and Greenhouse Gas Emissions of Plug-In Hybrid Electric Vehicles Vehicle Technologies Office: 2008 Advanced Vehicle Technology Analysis...

  14. Vehicle Technologies Office: 2008 Advanced Vehicle Technology...

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

    Vehicle Technology Analysis and Evaluation Activities and Heavy Vehicle Systems Optimization Program Annual Progress Report Vehicle Technologies Office: 2008 Advanced Vehicle...

  15. Lepton Generation Problem, Some Properties and Implications of the Curved Spacetime Dirac Equation -- (II)

    E-Print Network [OSTI]

    G. G. Nyambuya

    2010-01-22T23:59:59.000Z

    This reading is a continuation of the earlier reading Nyambuya (2008); where three new Curved Spacetime Dirac Equations have been derived mainly to try and account in a natural way for the observed anomalous gyromagnetic ratio of fermions and the suggestions is that particles including the Electron, which is thought to be a point particle, do have a finite spatial size and this is one of the reasons for the observed anomalous gyromagnetic ratio. Combining the idea in Nyambuya (2008) which lead to the derivation of the three new Curved Spacetime Dirac Equations, and the proposed Unified Field Theory (Nyambuya 2007), a total of 12 equations each with 16 sub-components are generated thus leading to a total of 192 equations for the Curved Spacetime Dirac Equation. Some symmetries of these equations are investigated, i.e., the Lorentz symmetry, charge conjugation symmetry (C), time reversal symmetry (T), Space reversal (P) and a combination of the C, P and T - symmetries. It is shown that these equations are Lorentz invariant, obey C-symmetry and that some violate T and P-symmetry while others do not and that they all obey PT-symmetry. These symmetries show (or modestly said -- seem to suggest) that anti-particles have positive mass and energy but a negative rest-mass and the opposite sign in electronic charge. Through the inspection of these symmetries, a suggestion is (here) made to the effect that the rest-mass of a particle must be related to the electronic charge of that particle thus leading us to a possible resolution of whether or not Neutrinos do have a none-zero rest-mass. Additionally, we demonstrate that these equations have the potency to explain naturally the observed lepton generation phenomena.

  16. Power Density Spectra of Gamma-Ray Burst Light Curves: Implications on Theory and Observation

    E-Print Network [OSTI]

    Heon-Young Chang; Insu Yi

    2001-01-02T23:59:59.000Z

    We study the power density spectrum (PDS) of artificial light curves of observed gamma-ray bursts (GRBs). We investigate statistical properties of GRB light curves by comparing the reported characteristics in the PDSs of the observed GRBs with those that we model, and discuss implications on interpretations of the PDS analysis results. Results of PDS analysis of observed GRBs suggest that the averaged PDS of GRBs follows a power law over about two decades of frequency with the power law index, -5/3, and the distribution of individual power follows an exponential distribution. Though an attempt to identify the most sensitive physical parameter has been made on the basis of the internal shock model, we demonstrate that conclusions of this kind of approach should be derived with due care. It is indicative that the physical information extracted from the slope can be misleading. We show that the reported slope and the distribution can be reproduced by adjusting the sampling interval in the time domain for a given decaying timescale of individual pulse in a specific form of GRB light curves. In particular, given that the temporal feature is modeled by a two-sided exponential function, the power law behavior with the index of -5/3 and the exponential distribution of the observed PDS is recovered at the 64 ms trigger time scale when the decaying timescale of individual pulse is $\\sim 1$ second, provided that the pulse sharply rises. Another way of using the PDS analysis is an application of the same method to individual long bursts in order to examine a possible evolution of the decaying timescale in a single burst.

  17. A Construction for Computer Visualization Certain Complex Curves

    E-Print Network [OSTI]

    Indiana University

    A Construction for Computer Visualization of Certain Complex Curves Andrew J. Hanson Computer representation of a manifold's geometry. Driven by this motivation, we found an extremely use- ful construction variables. Our construction is ideally suited for interactive computer graphics systems; in addition

  18. Monomial Embeddings of the Klein Curve \\Lambda Iwan M. Duursma

    E-Print Network [OSTI]

    Duursma, Iwan M.

    of the automor­ phism group. The curve has 24 flexpoints, i.e. points where the tangent intersects]. For the case N = 25, we first consider a configuration in PG(2; 8). Starting point are the seven points and seven lines of the Fano plane. Through the seven points pass 42 lines not in the Fano plane

  19. Learning Curve: A Simulation-based Approach to Dynamic Pricing

    E-Print Network [OSTI]

    Greenwald, Amy

    horizon. In this article, we refer to this type of changing of prices over time as dynamic pricing. Cost markets, the costs associated with making frequent, instantaneous price changes are greatly diminished [2Learning Curve: A Simulation-based Approach to Dynamic Pricing Joan Morris DiMicco, Amy Greenwald

  20. Neutrino flavor oscillations in a curved space-time

    E-Print Network [OSTI]

    Luca Visinelli

    2015-05-06T23:59:59.000Z

    Using a WKB approximation of the Dirac equation in a curved spacetime, we obtain the expression for the phase shift between two neutrino mass eigenstates in a generic gravitational field. We apply this expression to two specific space-time geometries, namely the Kerr-Newman metric describing a rotating and charged black hole, and the Friedmann-Robertson-Walker metric.

  1. Revising neutrino oscillations in a curved space-time

    E-Print Network [OSTI]

    Visinelli, Luca

    2014-01-01T23:59:59.000Z

    We revise the theory of neutrino oscillations in a gravitational field, starting from the WKB approximation of the Dirac equation in a curved spacetime. We discuss the expression for the phase shift in neutrino flavor oscillations in the geometry around a rotating, charged black hole (Kerr-Newman metric) and for cosmological neutrinos (Friedmann-Robertson-Walker metric).

  2. Wind Energy Learning Curves for Reference in Expert Elicitations

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Wind Energy Learning Curves for Reference in Expert Elicitations Sarah Mangels, Erin Baker. Abstract: This study presents future projections of wind energy capacity and cost based on historical data. The study will be used during wind- energy expert elicitations (formal interviews aimed to quantify

  3. Efficient Algorithms for Implementing Elliptic Curve PublicKey Schemes

    E-Print Network [OSTI]

    Efficient Algorithms for Implementing Elliptic Curve Public­Key Schemes by Dan Beauregard A Thesis Cyganski Thesis Advisor Thesis Committee Dr. Stanley Selkow Dr. John Orr Thesis Committee Department Head #12; Preface This thesis describes the research which I conducted while completing my graduate work

  4. On the Use of Weber Polynomials in Elliptic Curve Cryptography

    E-Print Network [OSTI]

    Zaroliagis, Christos D.

    On the Use of Weber Polynomials in Elliptic Curve Cryptography Elisavet Konstantinou1,2 , Yannis C using the Complex Multiplication method which typically uses the roots of Hilbert or Weber polynomials and unifying manner a complete set of transformations of the roots of a Weber polynomial to the roots of its

  5. Experience Curves and Solar PV Fred Heutte, Senior Policy Associate

    E-Print Network [OSTI]

    Experience Curves and Solar PV Fred Heutte, Senior Policy Associate NW Energy Coalition September 3 resources costs as being ranges rather than fixed values. It is evident that the question of future solar PV small percentage of all resources at present, there is a strong sense that once solar PV reaches "grid

  6. ISOMORPHISM CLASSES OF PICARD CURVES OVER FINITE FIELDS

    E-Print Network [OSTI]

    for construction of cryptosystems based on the discrete logarithm problem, and elliptic curve cryptography is now for constructing public key cryptosystems by Galbraith, Paulus and Smart in [8]. Besides providing an algorithm, of a place p is defined as the extension degree of the residue field of p over k. For a divisor D = npp (that

  7. Computing local p-adic height pairings on hyperelliptic curves

    E-Print Network [OSTI]

    Balakrishnan, Jennifer S

    2010-01-01T23:59:59.000Z

    We describe an algorithm to compute the local component at p of the Coleman-Gross p-adic height pairing on divisors on hyperelliptic curves. As the height pairing is given in terms of a Coleman integral, we also provide new techniques to evaluate Coleman integrals of meromorphic differentials and present our algorithms as implemented in Sage.

  8. The Orbital Light Curve of Aquila X-1

    E-Print Network [OSTI]

    William F. Welsh; Edward L. Robinson; Patrick Young

    2000-04-25T23:59:59.000Z

    We obtained R- and I-band CCD photometry of the soft X-ray transient/neutron- star binary Aql X-1 in 1998 June while it was at quiescence. We find that its light curve is dominated by ellipsoidal variations, although the ellipsoidal variations are severely distorted and have unequal maxima. After we correct for the contaminating flux from a field star located only 0.46" away, the peak-to-peak amplitude of the modulation is ~0.25 mag in the R band, which requires the orbital inclination to be greater than 36 degrees. The orbital period we measure is consistent with the 18.95 h period measured by Chevalier & Ilovaisky (1998). During its outbursts the light curve of Aql X-1 becomes single humped. The outburst light curve observed by Garcia et al. (1999) agrees in phase with our quiescent light curve. We show that the single humped variation is caused by a ``reflection effect,'' that is, by heating of the side of the secondary star facing towards the neutron star.

  9. THE ECONOMICS OF CONSERVED-ENERGY "SUPPLY" CURVES

    E-Print Network [OSTI]

    California at Berkeley. University of

    is part of the working papers series of the Program on Workable Energy Regulation (POWER). POWERPWP-028 THE ECONOMICS OF CONSERVED-ENERGY "SUPPLY" CURVES Steven Stoft April 1995 This paper is a program of the University of California Energy Institute, a multicampus research unit of the University

  10. Fast hashing onto elliptic curves over elds of characteristic 3

    E-Print Network [OSTI]

    and Hae Y. Kim 2 1 Scopus Tecnologia S. A. Av. Mutinga, 4105 BR 05110{000 S~ao Paulo (SP), Brazil, tr. 3, 158 BR 05508-900, S~ao Paulo(SP), Brazil. hae@lps.usp.br Abstract. We describe a fast hash by patents. Currently, the BLS algorithm has only been instantiated for supersingular elliptic curves over F

  11. type Riemannian metric on the space of planar curves

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of Computational Anatomy (MFCA'06) inria-00635881,version1-26Oct2011 Author manuscript, published in "1st MICCAI (MFCA'06) 41 inria-00635881,version1-26Oct2011 #12;2.2 Closure of open curves in H1 metric A generic z

  12. Efficient Techniques for High-Speed Elliptic Curve Cryptography

    E-Print Network [OSTI]

    Gebotys Department of Electrical and Computer Engineering, University of Waterloo, Canada, {plonga] is an integer, is the central and most time-consuming operation in Elliptic Curve Cryptography (ECC). Hence, its gained increasing importance in recent years. In this work, we combine several efficient techniques

  13. Dezincing Technology

    SciTech Connect (OSTI)

    Dudek, F.J.; Daniels, E.J. [Argonne National Lab., IL (United States). Energy Service Div.; Morgan, W.A. [Metal Recovery Technologies, Inc., East Chicago, IN (United States)

    1997-08-01T23:59:59.000Z

    Half of the steel produced in the US is derived from scrap. With zinc-coated prompt scrap increasing fivefold since 1980, steel-makers are feeling the effect of increased contaminant loads on their operations. The greatest concern is the cost of treatment before disposal of waste dusts and water that arise from remelting zinc-coated scrap. An economic process is needed to strip and recover the zinc from scrap to provide a low residual scrap for steel- and iron-making. Metal Recovery Technologies, Inc., with the assistance of Argonne National Laboratory, have been developing a caustic leach dezincing process for upgrading galvanized stamping plant scrap into clean scrap with recovery of the zinc. With further development the technology could also process galvanized scrap from obsolete automobiles. This paper will review: (1) the status of recent pilot plant operations and plans for a commercial demonstration facility with a dezincing capacity of up to 250,000 tons/year, (2) the economics of caustic dezincing, and (3) benefits of decreased cost of environmental compliance, raw material savings, and improved operations with use of dezinced scrap.

  14. General com Technology community

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    Campus IT General com m unity Technology community ITsystem owners Campus Council for Information Technology (CCFIT) · ~30 members · Advisory evaluation and review role · Input from faculty, staff, students formal representation on steering team and subcommittees Technology Support Program · Technology support

  15. CSIR TECHNOLOGY AWARDS -2013

    E-Print Network [OSTI]

    Jayaram, Bhyravabotla

    CSIR TECHNOLOGY AWARDS - 2013 GUIDELINES & PROFORMAE FOR NOMINATIONS Planning and Performance 2013 #12;CSIR TECHNOLOGY AWARDS BRIEF DETAILS ,,CSIR Technology Awards were instituted in 1990 to encourage multi-disciplinary in- house team efforts and external interaction for technology development

  16. Northwest Regional Technology Center

    E-Print Network [OSTI]

    Northwest Regional Technology Center for Homeland Security The Northwest Regional Technology Center and deployment of technologies that are effective homeland security solutions for the region, and accelerate technology transfer to the national user community. Foster a collaborative spirit across agencies

  17. Geo energy research and development: technology transfer

    SciTech Connect (OSTI)

    Traeger, R.K.

    1982-03-01T23:59:59.000Z

    Sandia Geo Energy Programs related to geothermal, coal, oil and gas, and synfuel resources have provided a useful mechanism for transferring laboratory technologies to private industry. Significant transfer of hardware, computer programs, diagnostics and instrumentation, advanced materials, and in situ process understanding has occurred through US/DOE supported programs in the past five years. The text briefly reviews the technology transfer procedures and summarizes 32 items that have been transferred and another 20 technologies that are now being considered for possible transfer to industry. A major factor in successful transfer has been personal interactions between Sandia engineers and the technical staff from private industry during all aspects of the technology development.

  18. NREL: Technology Deployment - Technology Acceleration

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy: Grid Integration NRELCostBuildingModelsTechnical Assistance

  19. Graphene wormholes: A condensed matter illustration of Dirac fermions in curved space

    E-Print Network [OSTI]

    J. Gonzalez; J. Herrero

    2009-09-16T23:59:59.000Z

    We study the properties of graphene wormholes in which a short nanotube acts as a bridge between two graphene sheets, where the honeycomb carbon lattice is curved from the presence of 12 heptagonal defects. By taking the nanotube bridge with very small length compared to the radius, we develop an effective theory of Dirac fermions to account for the low-energy electronic properties of the wormholes in the continuum limit, where the frustration induced by the heptagonal defects is mimicked by a line of fictitious gauge flux attached to each of them. We find in particular that, when the effective gauge flux from the topological defects becomes maximal, the zero-energy modes of the Dirac equation can be arranged into two triplets, that can be thought as the counterpart of the two triplets of zero modes that arise in the dual instance of the continuum limit of large spherical fullerenes. We further investigate the graphene wormhole spectra by performing a numerical diagonalization of tight-binding hamiltonians for very large lattices realizing the wormhole geometry. The correspondence between the number of localized electronic states observed in the numerical approach and the effective gauge flux predicted in the continuum limit shows that graphene wormholes can be consistently described by an effective theory of two Dirac fermion fields in the curved geometry of the wormhole, opening the possibility of using real samples of the carbon material as a playground to experiment with the interaction between the background curvature and the Dirac fields.

  20. Hagedorn String Thermodynamics in Curved Spacetimes and near Black Hole Horizons

    E-Print Network [OSTI]

    Thomas G. Mertens

    2015-06-25T23:59:59.000Z

    This thesis concerns the study of high-temperature string theory on curved backgrounds, generalizing the notions of Hagedorn temperature and thermal scalar to general backgrounds. Chapter 2 contains a review on string thermodynamics in flat space, setting the stage. Chapters 3 and 4 contain the detailed study of the random walk picture in a general curved background. Chapters 5 and 6 then apply this to Rindler space, the near-horizon approximation of a generic (uncharged) black hole. Chapters 7 and 8 contain a study of the AdS3 and BTZ WZW models where we study the thermal spectrum and the resulting random walk picture that emerges. Chapters 9 and 10 attempt to draw general conclusions from the study of the two specific examples earlier: we draw lessons on string thermodynamics in general and on (perturbative) string thermodynamics around black hole horizons. For the latter, we point out a possible link to the firewall paradox. Finally, chapter 11 contains a detailed discussion on the near-Hagedorn (and high-energy) stress tensor in a generic spacetime, the results of which are applied to provide a description of the Bekenstein-Hawking entropy in terms of long string equilibration.

  1. Quantum field theory in curved spacetime, the operator product expansion, and dark energy

    E-Print Network [OSTI]

    S. Hollands; R. M. Wald

    2008-05-22T23:59:59.000Z

    To make sense of quantum field theory in an arbitrary (globally hyperbolic) curved spacetime, the theory must be formulated in a local and covariant manner in terms of locally measureable field observables. Since a generic curved spacetime does not possess symmetries or a unique notion of a vacuum state, the theory also must be formulated in a manner that does not require symmetries or a preferred notion of a ``vacuum state'' and ``particles''. We propose such a formulation of quantum field theory, wherein the operator product expansion (OPE) of the quantum fields is elevated to a fundamental status, and the quantum field theory is viewed as being defined by its OPE. Since the OPE coefficients may be better behaved than any quantities having to do with states, we suggest that it may be possible to perturbatively construct the OPE coefficients--and, thus, the quantum field theory. By contrast, ground/vacuum states--in spacetimes, such as Minkowski spacetime, where they may be defined--cannot vary analytically with the parameters of the theory. We argue that this implies that composite fields may acquire nonvanishing vacuum state expectation values due to nonperturbative effects. We speculate that this could account for the existence of a nonvanishing vacuum expectation value of the stress-energy tensor of a quantum field occurring at a scale much smaller than the natural scales of the theory.

  2. Automotive and fuel technologies: current and future options

    SciTech Connect (OSTI)

    Price, R.; Stamets, L.

    1984-03-01T23:59:59.000Z

    The purpose of this work is to assess the likely commercial timeframe of a broad range of automotive and fuel technologies. The report assesses the status of existing and alternative engine technologies, associated fuels, and problems which may retard their introduction and use. It estimates, where possible, the earliest time of general commercial use for each developing automotive technology and fuel.

  3. Optics-less smart sensors and a possible mechanism of cutaneous vision in nature

    E-Print Network [OSTI]

    Leonid Yaroslavsky; Chad Goerzen; Stanislav Umansky; H. John Caulfield

    2008-08-08T23:59:59.000Z

    Optics-less cutaneous (skin) vision is not rare among living organisms, though its mechanisms and capabilities have not been thoroughly investigated. This paper demonstrates, using methods from statistical parameter estimation theory and numerical simulations, that an array of bare sensors with a natural cosine-law angular sensitivity arranged on a flat or curved surface has the ability to perform imaging tasks without any optics at all. The working principle of this type of optics-less sensor and the model developed here for determining sensor performance may be used to shed light upon possible mechanisms and capabilities of cutaneous vision in nature.

  4. The contact theorem for charged fluids: from planar to curved geometries

    E-Print Network [OSTI]

    Juan Pablo Mallarino; Gabriel Tellez; Emmanuel Trizac

    2014-10-23T23:59:59.000Z

    When a Coulombic fluid is confined between two parallel charged plates, an exact relation links the difference of ionic densities at contact with the plates, to the surface charges of these boundaries. It no longer applies when the boundaries are curved, and we work out how it generalizes when the fluid is confined between two concentric spheres (or cylinders), in two and in three space dimensions. The analysis is thus performed within the cell model picture. The generalized contact relation opens the possibility to derive new exact expressions, of particular interest in the regime of strong coulombic couplings. Some emphasis is put on cylindrical geometry, for which we discuss in depth the phenomenon of counter-ion evaporation/condensation, and obtain novel results. Good agreement is found with Monte Carlo simulation data.

  5. Financial Aid at Princeton Making It Possible

    E-Print Network [OSTI]

    graduated with loans in 2011, and they carried an average debt of $26,600 (Source: The Project on Student-income backgrounds. LOW DEBT Our no-loan policy has made it possible for most students to graduate with little at graduation is about $5,000. For comparison, about 66 percent of college seniors in the United States

  6. What in the World are Possible Worlds?

    E-Print Network [OSTI]

    Dondero, Mark

    2010-01-16T23:59:59.000Z

    talk of possible worlds? In this thesis, I will attempt to outline the most significant and well-recognized view in this debate: that of David Lewis. Through my discussion of him, I will find occasion to discuss some alternative views that have arisen...

  7. 'What is Space?': Full of Possibilities

    Broader source: Energy.gov [DOE]

    A new PBS NOVA series, The Fabric of the Cosmos, peers into the perception of time, the realm of quantum physics, and the astonishing possibilities of the multiverse. Tonight's premiere episode features National Laboratory physicists, including recent Nobel Prize Winner Dr. Saul Perlmuter.

  8. Spacetime Warps for Spinning Particles Possible?

    E-Print Network [OSTI]

    T. Dudas

    2002-01-04T23:59:59.000Z

    By incorporating spinning particles into the framework of classical General Relativity, the theory is changed insofar, as, though using holonome coordinates, the connexion becomes asymmetrical. This implies, that partial derivatives do not commute any longer. Hence, the class of functions under consideration has to be extended. A non-minimal extension leads to the possibility of spacetime warps for spinning particles.

  9. Possible Target Options Michael A. Green

    E-Print Network [OSTI]

    McDonald, Kirk

    Possible Target Options Michael A. Green WATER COOLED SOLID TARGETS For high energy drivers, a desirable target material should have a medium to high Z. For low energy drivers the targe should be made are obvious medium Z target materials. A less obvious candidate is a titanium or niobium-titanium alloy target

  10. Technology reviews: Dynamic curtain wall systems

    SciTech Connect (OSTI)

    Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

    1992-09-01T23:59:59.000Z

    We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize die state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends. Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

  11. New technologies for item monitoring

    SciTech Connect (OSTI)

    Abbott, J.A. [EG & G Energy Measurements, Albuquerque, NM (United States); Waddoups, I.G. [Sandia National Labs., Albuquerque, NM (United States)

    1993-12-01T23:59:59.000Z

    This report responds to the Department of Energy`s request that Sandia National Laboratories compare existing technologies against several advanced technologies as they apply to DOE needs to monitor the movement of material, weapons, or personnel for safety and security programs. The authors describe several material control systems, discuss their technologies, suggest possible applications, discuss assets and limitations, and project costs for each system. The following systems are described: WATCH system (Wireless Alarm Transmission of Container Handling); Tag system (an electrostatic proximity sensor); PANTRAK system (Personnel And Material Tracking); VRIS (Vault Remote Inventory System); VSIS (Vault Safety and Inventory System); AIMS (Authenticated Item Monitoring System); EIVS (Experimental Inventory Verification System); Metrox system (canister monitoring system); TCATS (Target Cueing And Tracking System); LGVSS (Light Grid Vault Surveillance System); CSS (Container Safeguards System); SAMMS (Security Alarm and Material Monitoring System); FOIDS (Fiber Optic Intelligence & Detection System); GRADS (Graded Radiation Detection System); and PINPAL (Physical Inventory Pallet).

  12. Curve fitting methods for solar radiation data modeling

    SciTech Connect (OSTI)

    Karim, Samsul Ariffin Abdul, E-mail: samsul-ariffin@petronas.com.my, E-mail: balbir@petronas.com.my; Singh, Balbir Singh Mahinder, E-mail: samsul-ariffin@petronas.com.my, E-mail: balbir@petronas.com.my [Department of Fundamental and Applied Sciences, Faculty of Sciences and Information Technology, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak Darul Ridzuan (Malaysia)

    2014-10-24T23:59:59.000Z

    This paper studies the use of several type of curve fitting method to smooth the global solar radiation data. After the data have been fitted by using curve fitting method, the mathematical model of global solar radiation will be developed. The error measurement was calculated by using goodness-fit statistics such as root mean square error (RMSE) and the value of R{sup 2}. The best fitting methods will be used as a starting point for the construction of mathematical modeling of solar radiation received in Universiti Teknologi PETRONAS (UTP) Malaysia. Numerical results indicated that Gaussian fitting and sine fitting (both with two terms) gives better results as compare with the other fitting methods.

  13. Replicating the benefits of closed timelike curves without breaking causality

    E-Print Network [OSTI]

    Xiao Yuan; Syed M. Assad; Jayne Thompson; Jing Yan Haw; Vlatko Vedral; Timothy C. Ralph; Ping Koy Lam; Christian Weedbrook; Mile Gu

    2014-12-17T23:59:59.000Z

    In general relativity, closed timelike curves can break causality with remarkable and unsettling consequences. At the classical level, they induce causal paradoxes disturbing enough to motivate conjectures that explicitly prevent their existence. At the quantum level, resolving such paradoxes induce radical benefits - from cloning unknown quantum states to solving problems intractable to quantum computers. Instinctively, one expects these benefits to vanish if causality is respected. Here we show that in harnessing entanglement, we can efficiently solve NP-complete problems and clone arbitrary quantum states - even when all time-travelling systems are completely isolated from the past. Thus, the many defining benefits of closed timelike curves can still be harnessed, even when causality is preserved. Our results unveil the subtle interplay between entanglement and general relativity, and significantly improve the potential of probing the radical effects that may exist at the interface between relativity and quantum theory.

  14. Using the Hubbert curve to forecast oil production trends worldwide

    E-Print Network [OSTI]

    Almulla, Jassim M.

    2007-09-17T23:59:59.000Z

    .093 1272.377 0.95 0.0337 152.453 2069 Egypt 11338.65 2025 30.417 0.119 371.776 0.98 0.04298 336.504 2075 F.S.U. 172721.94 1968 74.370 0.098 2321.460 0.94 1.07557 4244.327 2047 Former Czechoslovakia 14611.80 1975 0.084 0.031 173041.972 0.67 0.0011849 111.... 2 0 1 2 3 4 5 6 7 8 9 10 1900 1920 1940 1960 1980 2000 2020 2040 2060 Year Pr od uc tio n R ate , M MS TB /D ay Actual Estimated Fig. 1.1 A Basic Hubbert Bell-Shaped Curve The highest point in the curve represents the production peak. After...

  15. Dissipative dark matter and the rotation curves of dwarf galaxies

    E-Print Network [OSTI]

    Foot, R

    2015-01-01T23:59:59.000Z

    There is ample evidence from rotation curves that dark matter halo's around disk galaxies have nontrivial dynamics. Of particular significance are: a) the cored dark matter profile of disk galaxies, b) correlations of the shape of rotation curves with baryonic properties, and c) the Tully-Fisher relation. Dark matter halo's around disk galaxies may have nontrivial dynamics if dark matter is strongly self interacting and dissipative. Multicomponent hidden sector dark matter featuring a massless `dark photon' (from an unbroken dark $U(1)$ gauge interaction) which kinetically mixes with the ordinary photon provides a concrete example of such dark matter. The kinetic mixing interaction facilitates halo heating by enabling ordinary supernovae to be a source of these `dark photons'. Dark matter halo's can expand and contract in response to the heating and cooling processes, but for a sufficiently isolated halo should have evolved to a steady state or `equilibrium' configuration where heating and cooling rates local...

  16. On calculation of microlensing light curve by gravitational lens caustic

    E-Print Network [OSTI]

    M. B. Bogdanov

    2001-02-02T23:59:59.000Z

    For an analysis of microlensing observational data in case of binary gravitational lenses as well as for an interpretation of observations of high magnification events in multiple images of a lensed quasar it is necessary to calculate for a given source the microlensing light curve by a fold caustic. This problem comes to the numerical calculation of a singular integral. We formulated the sufficient condition of a convergence of the integral sum for this singular integral. The strictly approach to the problem of a comparison of model results with the unequally sampled observational data consists in calculation of the model light curve in equidistant points of the canonical dissection of the integration segment and a following interpolation of its values at the moments of observations.

  17. Shading curves: vector-based drawing with explicit gradient control

    E-Print Network [OSTI]

    Lieng, Henrik; Tasse, Flora; Kosinka, Ji?í; Dodgson, Neil A.

    2015-01-01T23:59:59.000Z

    gradient. We resolve this problem by using subdivision surfaces that are constructed from shading curves and their shading profiles. Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Picture/Image Gene- ration... potential sources of visual artefacts in Illustrator’s tool: the rendering procedure, the deformation procedure, and blending with underlying layers. Figure 18 shows images coloured with Illustrator’s tool, where arte- facts are visible. In comparison, our...

  18. A dispersion curve study of dredged spoil basin inlets

    E-Print Network [OSTI]

    Male, Robert

    1974-01-01T23:59:59.000Z

    13 19 IV. PROCEDURES AND TECHNIOUHS Test Procenures. Interpretation of Dispersion Curves. Data Analysis, 26 26 28 37 V. EXPERIMENTAL RESULTS. VI. DISCUSSION. The Model as a Settling Tank Relationship to Dredging Practice. 58 58 70 VII... all the spoil must be confined. The additional costs to be incurred in that region over ten years vary from $2. 62 million to $12. 87 million according to the confinement scheme. In the USA, most of the dredging projects are under the con- trol...

  19. Discontinuous quantum evolutions in the presence of closed timelike curves

    E-Print Network [OSTI]

    Richard DeJonghe; Kimberly Frey; Tom Imbo

    2010-05-06T23:59:59.000Z

    We consider Deutsch's computational model of a quantum system evolving in a spacetime containing closed timelike curves. Although it is known that this model predicts non-linear and non-unitary evolutions of the system, we demonstrate that it also gives rise to evolutions which are a discontinuous function of the input state. These discontinuities persist for the most natural modifications of Deutsch's approach.

  20. CMM Technology

    SciTech Connect (OSTI)

    Ward, Robert C.

    2008-10-20T23:59:59.000Z

    This project addressed coordinate measuring machine (CMM) technology and model-based engineering. CMM data analysis and delivery were enhanced through the addition of several machine types to the inspection summary program. CMM hardware and software improvements were made with the purchases of calibration and setup equipment and new model-based software for the creation of inspection programs. Kansas City Plant (KCP) personnel contributed to and influenced the development of dimensional metrology standards. Model-based engineering capabilities were expanded through the development of software for the tolerance analysis of piece parts and for the creation of model-based CMM inspection programs and inspection plans and through the purchase of off-the-shelf software for the tolerance analysis of mechanical assemblies. An obsolete database application used to track jobs in Precision Measurement was replaced by a web-based application with improved query and reporting capabilities. A potential project to address the transformation of the dimensional metrology enterprise at the Kansas City Plant was identified.

  1. Ultrafine-grained magnetite in deep-sea sediments: Possible bacterial magnetofossils

    E-Print Network [OSTI]

    Kirschvink, Joseph L.

    extraction efficiencies in this small size range and incomplete separation of magnetic minerals from other of Technology, Pasadena, California 91125 ABSTRACT A new extraction technique now permits ultrafine magnetite marine sediments. These objects possibly constitute the smallest mineral fossils yet recovered from

  2. Can CCM law properly represent all extinction curves?

    E-Print Network [OSTI]

    Geminale, A; Geminale, Anna; Popowski, Piotr

    2005-01-01T23:59:59.000Z

    We present the analysis of a large sample of lines of sight with extinction curves covering wavelength range from near-infrared (NIR) to ultraviolet (UV). We derive total to selective extinction ratios based on the Cardelli, Clayton and Mathis (1989, CCM) law, which is typically used to fit the extinction data both for diffuse and dense interstellar medium. We conclude that the CCM law is able to fit most of the extinction curves in our sample. We divide the remaining lines of sight with peculiar extinction into two groups according to two main behaviors: a) the optical/IR or/and UV wavelength region cannot be reproduced by the CCM formula; b) the optical/NIR and UV extinction data are best fit by the CCM law with different values of R_V. We present examples of such curves. The study of both types of peculiar cases can help us to learn about the physical processes that affect dust in the interstellar medium, e.g., formation of mantles on the surface of grains, evaporation, growing or shattering.

  3. Can CCM law properly represent all extinction curves?

    E-Print Network [OSTI]

    Anna Geminale; Piotr Popowski

    2005-02-23T23:59:59.000Z

    We present the analysis of a large sample of lines of sight with extinction curves covering wavelength range from near-infrared (NIR) to ultraviolet (UV). We derive total to selective extinction ratios based on the Cardelli, Clayton and Mathis (1989, CCM) law, which is typically used to fit the extinction data both for diffuse and dense interstellar medium. We conclude that the CCM law is able to fit most of the extinction curves in our sample. We divide the remaining lines of sight with peculiar extinction into two groups according to two main behaviors: a) the optical/IR or/and UV wavelength region cannot be reproduced by the CCM formula; b) the optical/NIR and UV extinction data are best fit by the CCM law with different values of R_V. We present examples of such curves. The study of both types of peculiar cases can help us to learn about the physical processes that affect dust in the interstellar medium, e.g., formation of mantles on the surface of grains, evaporation, growing or shattering.

  4. Method of non-destructively inspecting a curved wall portion

    DOE Patents [OSTI]

    Fong, James T. (Bethel Park, PA)

    1996-01-01T23:59:59.000Z

    A method of non-destructively inspecting a curved wall portion of a large and thick walled vessel for a defect by computed tomography is provided. A collimated source of radiation is placed adjacent one side of the wall portion and an array of detectors for the radiation is placed on the other side adjacent the source. The radiation from the source passing through the wall portion is then detected with the detectors over a limited angle, dependent upon the curvature of the wall of the vessel, to obtain a dataset. The source and array are then coordinately moved relative to the wall portion in steps and a further dataset is obtained at each step. The plurality of datasets obtained over the limited angle is then processed to produce a tomogram of the wall portion to determine the presence of a defect therein. In a preferred embodiment, the curved wall portion has a center of curvature so that the source and the array are positioned at each step along a respective arc curved about the center. If desired, the detector array and source can be reoriented relative to a new wall portion and an inspection of the new wall portion can be easily obtained. Further, the source and detector array can be indexed in a direction perpendicular to a plane including the limited angle in a plurality of steps so that by repeating the detecting and moving steps at each index step, a three dimensional image can be created of the wall portion.

  5. Experimental study of curved guide tubes for pellet injection

    SciTech Connect (OSTI)

    Combs, S.K.; Baylor, L.R.; Foust, C.R.; Gouge, M.J.; Jernigan, T.C.; Milora, S.L.

    1997-12-01T23:59:59.000Z

    The use of curved guide tubes for transporting frozen hydrogen pellets offers great flexibility for pellet injection into plasma devices. While this technique has been previously employed, an increased interest in its applicability has been generated with the recent ASDEX Upgrade experimental data for magnetic high-field side (HFS) pellet injection. In these innovative experiments, the pellet penetration appeared to be significantly deeper than for the standard magnetic low-field side injection scheme, along with corresponding greater fueling efficiencies. Thus, some of the major experimental fusion devices are planning experiments with HFS pellet injection. Because of the complex geometries of experimental fusion devices, installations with multiple curved guide tube sections will be required for HFS pellet injection. To more thoroughly understand and document the capability of curved guide tubes, an experimental study is under way at the Oak Ridge National Laboratory (ORNL). In particular, configurations and pellet parameters applicable for the DIII-D tokamak and the International Thermonuclear Experimental Reactor (ITER) were simulated in laboratory experiments. Initial test results with nominal 2.7- and 10-mm-diam deuterium pellets are presented and discussed.

  6. Unusual Transitions Made Possible by Superoscillations

    E-Print Network [OSTI]

    Ran Ber; Moshe Schwartz

    2015-02-06T23:59:59.000Z

    We present a physical scenario in which an electromagnetic field in a state consisted of photons whose energies are smaller than the energy gap of a two-state particle, interacts with the particle, for an arbitrarily long duration, as if it was consisted of photons whose energy matches the energy gap of the particle. This type of interaction is possible when the field is in a specially tailored state whose magnetic field's expectation value is a superoscillatory function.

  7. Energy Conservation Possibilities Using Gas Separating Membranes

    E-Print Network [OSTI]

    Knieriem, H.; Henis, J. M. S.

    1980-01-01T23:59:59.000Z

    APPLICATIONS Hydrogen Recovery from Ammonia Purge Streams A typical Kellogg ammonia plant process flow looks like figure 5. Note the purge stream which normally flows to a fuel header. The purge is necessary because the process feed streams carry... Technology Conference Houston, TX, April 13-16, 1980 2/3 of the purge stream is hydrogen. That means a loss of reactant in the process feed that must be made up by converting more methane to hydrogen. The Monsanto ammonia plant in Luling, Louisiana...

  8. Plasma technology directory

    SciTech Connect (OSTI)

    Ward, P.P.; Dybwad, G.L.

    1995-03-01T23:59:59.000Z

    The Plasma Technology Directory has two main goals: (1) promote, coordinate, and share plasma technology experience and equipment within the Department of Energy; and (2) facilitate technology transfer to the commercial sector where appropriate. Personnel are averaged first by Laboratory and next by technology area. The technology areas are accelerators, cleaning and etching deposition, diagnostics, and modeling.

  9. Fujita LaboratoryTokyo Instituteof Technology Tokyo Instituteof Technology

    E-Print Network [OSTI]

    Fujita LaboratoryTokyo Instituteof Technology Tokyo Instituteof Technology Fujita LaboratoryTokyo Institute of Technology Tokyo Institute of Technology 231 #12;Fujita LaboratoryTokyo Instituteof Technology Tokyo Instituteof Technology 2 IT #12;Fujita LaboratoryTokyo Instituteof

  10. Seismic fragility curves for reinforced concrete A Dissertation Submitted in Partial Fulfilment of the Requirements

    E-Print Network [OSTI]

    Seismic fragility curves for reinforced concrete buildings A Dissertation Submitted in Partial dissertation entitled "Seismic fragility curves for reinforced concrete frame and wall- frame buildings. Buildings designed for seismic loading, and buildings designed only for gravity loads, are considered

  11. Commercial Vehicle Parking in California: Exploratory Evaluation of the Problem and Possible Technology-Based Solutions

    E-Print Network [OSTI]

    Shaheen, Susan; Rodier, Caroline J.

    2007-01-01T23:59:59.000Z

    crashes. Air Quality Diesel emissions from trucks contributeof idling emission issues and the truck parking shortage.decreasing emission levels from idling trucks. The goal of

  12. PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program

    E-Print Network [OSTI]

    California at Berkeley, University of

    PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program publication is funded by the Division by the University of California Pavement Research Center. The University of California Pavement Research Center Using innovative research and sound engineering principles to improve pavement structures, materials

  13. Northwestern University Information Technology

    E-Print Network [OSTI]

    Shull, Kenneth R.

    ... Integrated Technology Classrooms Online Lectures Collaborative Course Management Tools ...in any teaching environment Classroom Laptop Mobile Device www.it.northwestern.edu NUITAcademic&ResearchTechnologiesNorthwestern University Information Technology (NUIT) is committed to supporting faculty research

  14. 2010 DOE EERE Vehicle Technologies Program Merit Review ? Technology...

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

    Technology Integration 2010 DOE EERE Vehicle Technologies Program Merit Review Technology Integration Technology integration merit review results 2010amr08.pdf More...

  15. Vehicle Technologies Office: 2010 Fuel Technologies R&D Annual...

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

    Fuel Technologies R&D Annual Progress Report Vehicle Technologies Office: 2010 Fuel Technologies R&D Annual Progress Report The Fuels Technologies subprogram supports fuels and...

  16. HTP over Algebraic Extensions of Q: Normforms vs. Elliptic Curves HTP over Algebraic Extensions of Q

    E-Print Network [OSTI]

    Shlapentokh, Alexandra

    HTP over Algebraic Extensions of Q: Normforms vs. Elliptic Curves HTP over Algebraic Extensions and Computability, ICMS, June 2007 #12;HTP over Algebraic Extensions of Q: Normforms vs. Elliptic Curves A Talk in Two Rounds Round I: Normforms Today Round II: Elliptic Curves Later #12;HTP over Algebraic Extensions

  17. HTP over Algebraic Extensions of Q: Normforms vs. Elliptic Curves HTP over Algebraic Extensions of Q

    E-Print Network [OSTI]

    Shlapentokh, Alexandra

    HTP over Algebraic Extensions of Q: Normforms vs. Elliptic Curves HTP over Algebraic Extensions and Computability, ICMS, June 2007 #12;HTP over Algebraic Extensions of Q: Normforms vs. Elliptic Curves A Talk in Two Rounds Round II: Elliptic Curves Today #12;HTP over Algebraic Extensions of Q: Normforms vs

  18. STORAGE-YIELD CURVES WITH INFLOWS FROM A DIVERSION PIERLUIGI CLAPS

    E-Print Network [OSTI]

    Poggi, Davide

    1 STORAGE-YIELD CURVES WITH INFLOWS FROM A DIVERSION CHANNEL PIERLUIGI CLAPS DIFA, Università della Probabilistic analytical methods for building storage-yield curves provide reliable preliminary design condition of storage-yield curves of reservoirs when additional inflows from a diversion channel are available

  19. The Geometric Invariants of Null Cartan Curves Under The Similarity Transformations

    E-Print Network [OSTI]

    Hakan Simsek; Mustafa Özdemir

    2015-04-07T23:59:59.000Z

    In this paper, we study the differential geometry of null Cartan curves under the similarity transformations in the Minkowski space-time. Besides, we extend the fundamental theorem for a null Cartan curve according to a similarity motion. We find the equations of all self-similar null curves which is given its shape Cartan curvatures.

  20. Recursive tilings and space-filling curves with little fragmentation Herman Haverkort, TU Eindhoven

    E-Print Network [OSTI]

    Haverkort, Herman

    Recursive tilings and space-filling curves with little fragmentation Herman Haverkort, TU Eindhoven-filling curves with little fragmentation Herman Haverkort, TU Eindhoven Circular range query: report all points;Recursive tilings and space-filling curves with little fragmentation Herman Haverkort, TU Eindhoven Circular

  1. Kolstad: EKC Dec 2005 Interpreting Estimated Environmental Kuznets Curves for Greenhouse Gases

    E-Print Network [OSTI]

    Kolstad, Charles

    Kolstad: EKC Dec 2005 Interpreting Estimated Environmental Kuznets Curves for Greenhouse Gases to interpret a relationship between income and carbon emissions in a country (the environmental Kuznets curve), it was primarily concerned with Environmental Kuznets Curves (EKC) for greenhouse gas emissions. The EKC literature

  2. WORKING PAPER N 2007 -12 Education inequalities and the Kuznets curves

    E-Print Network [OSTI]

    Boyer, Edmond

    WORKING PAPER N° 2007 - 12 Education inequalities and the Kuznets curves: a global perspective, human capital, economic history, Kuznets curve. PARIS-JOURDAN SCIENCES ECONOMIQUES LABORATOIRE D2011 #12;Education Inequalities and the Kuznets Curves: A Global Perspective Since 1870 Christian

  3. Green's Conjecture for curves on arbitrary K3 Marian Aprodu and Gavril Farkas

    E-Print Network [OSTI]

    Farkas, Gavril

    Green's Conjecture for curves on arbitrary K3 surfaces Marian Aprodu and Gavril Farkas Abstract Green's Conjecture predicts than one can read off special linear series on an algebraic curve-Ramanan, provides a complete solution to Green's Conjecture for smooth curves on arbitrary K3 surfaces. 1

  4. THE GREEN CONJECTURE FOR EXCEPTIONAL CURVES ON A K3 SURFACE

    E-Print Network [OSTI]

    Pacienza, Gianluca

    THE GREEN CONJECTURE FOR EXCEPTIONAL CURVES ON A K3 SURFACE to prove the Green conjecture f* *or exceptional curves on K3 surfaces. Such curves count among made in the eighties by Green, and Green-Lazarsfeld, pointed * *out to some deep links between

  5. Elliptic curves with large torsion and positive rank over number fields of small degree and ECM

    E-Print Network [OSTI]

    Dujella, Andrej

    Elliptic curves with large torsion and positive rank over number fields of small degree and ECM for construction of elliptic curves with large torsion group and positive rank over number fields of small degree). Keywords: Torsion group, rank, elliptic curves, number fields Mathematics Subject Classification (2010): 11

  6. HIGH RANK ELLIPTIC CURVES WITH PRESCRIBED TORSION GROUP OVER QUADRATIC FIELDS

    E-Print Network [OSTI]

    Dujella, Andrej

    HIGH RANK ELLIPTIC CURVES WITH PRESCRIBED TORSION GROUP OVER QUADRATIC FIELDS JULIÁN AGUIRRE for the torsion group of elliptic curves dened over quadratic number elds. We present examples of high rank elliptic curves with given torsion group which give the current records for most of the torsion groups

  7. IEEE TRANSACTIONS ON POWER SYSTEMS, CHEN, DENG AND HUO. 1 Electricity Price Curve Modeling by Manifold

    E-Print Network [OSTI]

    markets. Index Terms-- Electricity spot price, locational marginal price, electricity forward curveIEEE TRANSACTIONS ON POWER SYSTEMS, CHEN, DENG AND HUO. 1 Electricity Price Curve Modeling and prediction of electricity price curves by applying the manifold learning methodology. Cluster analysis based

  8. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 23, NO. 3, AUGUST 2008 877 Electricity Price Curve Modeling

    E-Print Network [OSTI]

    Huo, Xiaoming

    --Electricity forward curve, electricity spot price, forecasting, locational marginal price, manifold learning. IIEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 23, NO. 3, AUGUST 2008 877 Electricity Price Curve approach for the modeling and analysis of electricity price curves by ap- plying the manifold learning

  9. CSC6870 Computer Graphics II B-Spline Curves and NURBS

    E-Print Network [OSTI]

    Hua, Jing

    CSC6870 Computer Graphics II B-Spline Curves and NURBS CSC6870 Computer Graphics II Motivation continuity CSC6870 Computer Graphics II B-spline Curve CSC6870 Computer Graphics II B-Splines · Curve CSC6870 Computer Graphics II B-Splines Basis Functions: Cox- deBoor recursion · The basis function

  10. An Appliance-driven Approach to Detection of Corrupted Load Curve Data

    E-Print Network [OSTI]

    Pei, Jian

    An Appliance-driven Approach to Detection of Corrupted Load Curve Data Guoming Tang1,3 , Kui Wu1@sfu.ca, jiuyang_tang@nudt.edu.cn, jshlei@shiep.edu.cn ABSTRACT Load curve data in power systems refers to users discov- ered in the data. Load curve data, however, usually suffers from corruptions caused by various

  11. Indexing Moving Objects by Space Filling Curves in the Dual Space

    E-Print Network [OSTI]

    Kaiserslautern, Universität

    The Bdual ­ tree: Indexing Moving Objects by Space Filling Curves in the Dual Space By Man Lung Yiu Objects by Space Filling Curves in the Dual Space Introduction Related work Problem definition: Indexing Moving Objects by Space Filling Curves in the Dual Space Introduction Related work Problem

  12. Ris-R-Report Multi-MW wind turbine power curve

    E-Print Network [OSTI]

    Risø-R-Report Multi-MW wind turbine power curve measurements using remote sensing instruments Wagner, Michael Courtney Title: Multi-MW wind turbine power curve measurements using remote sensing (max. 2000 char.): Power curve measurement for large wind turbines requires taking into account more

  13. Best Possible Strategy for Finding Ground States

    SciTech Connect (OSTI)

    Franz, Astrid; Hoffmann, Karl Heinz; Salamon, Peter

    2001-06-04T23:59:59.000Z

    Finding the ground state of a system with a complex energy landscape is important for many physical problems including protein folding, spin glasses, chemical clusters, and neural networks. Such problems are usually solved by heuristic search methods whose efficacy is judged by empirical performance on selected examples. We present a proof that, within the large class of algorithms that simulate a random walk on the landscape, threshold accepting is the best possible strategy. In particular, it can perform better than simulated annealing and Tsallis statistics. Our proof is the first example of a provably optimal strategy in this area.

  14. A possible explanation of the phase diagram of cuprate superconductors

    E-Print Network [OSTI]

    Tian De Cao

    2008-10-16T23:59:59.000Z

    A d-p pairing curve that is consistent with the pseudogap curve observed in experiments is found on a d-p model on phonon mechanism. On the discovery we suggest that there are two pseudogaps associated with the nearly localized d-p pairs and nearly free p-p pairs. The p-p pairs look like bosons and are responsible for superconductivities.

  15. Vehicle Technologies Office: News

    Broader source: Energy.gov [DOE]

    EERE intends to issue, on behalf of its Fuel Cell Technologies Office, a Funding Opportunity Announcement (FOA) entitled "Fuel Cell Technologies Incubator: Innovations in Fuel Cell and Hydrogen...

  16. Storage and IO Technology

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

    Burst Buffer User Defined Images Archive Home R & D Storage and IO Technologies Storage and IO Technologies Burst Buffer NVRAM and Burst Buffer Use Cases In collaboration...

  17. Technology Integration Overview

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

    Technology Integration Overview Dennis A. Smith - Clean Cities Deployment Connie Bezanson - Vehicle Education June 17, 2014 VEHICLE TECHNOLOGIES OFFICE This presentation does not...

  18. Integrated Technology Deployment

    Office of Energy Efficiency and Renewable Energy (EERE)

    Integrated technology deployment is a comprehensive approach to implementing solutions that increase the use of energy efficiency and renewable energy technologies. Federal, state, and local...

  19. Technology Transfer Reports

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

    Advanced Research Projects Agency-Energy (ARPA-E) Oil & Gas Technology Transfer Initiatives USEFUL LINKS Association of University Technology Managers (AUTM) Federal Laboratory...

  20. Geothermal Technologies Program Overview

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

    Jay Nathwani Acting Program Manager Geothermal Technologies Program Office of Energy Efficiency and Renewable Energy The Geothermal Technologies Program Overview May 18 2010 Energy...

  1. States & Emerging Energy Technologies

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

    operations and maintenance, and occupant impact, so not only trying to quantify building energy or technology energy performance, but also the impacts of that technology on users....

  2. Carbon Fiber Technology Facility

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

    The Carbon Fiber Technology Facility is relevant in proving the scale- up of low-cost carbon fiber precursor materials and advanced manufacturing technologies * Significant...

  3. Fuel & Lubricant Technologies

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

    May 15, 2012 Kevin Stork, Team Lead VTP Annual Merit Review VTP Fuel & Lubricant Technologies eere.energy.gov 2 | Vehicle Technologies Program Mission Enable advanced combustion...

  4. Average Soil Water Retention Curves Measured by Neutron Radiography

    SciTech Connect (OSTI)

    Cheng, Chu-Lin [ORNL; Perfect, Edmund [University of Tennessee, Knoxville (UTK); Kang, Misun [ORNL; Voisin, Sophie [ORNL; Bilheux, Hassina Z [ORNL; Horita, Juske [Texas Tech University (TTU); Hussey, Dan [NIST Center for Neutron Research (NCRN), Gaithersburg, MD

    2011-01-01T23:59:59.000Z

    Water retention curves are essential for understanding the hydrologic behavior of partially-saturated porous media and modeling flow transport processes within the vadose zone. In this paper we report direct measurements of the main drying and wetting branches of the average water retention function obtained using 2-dimensional neutron radiography. Flint sand columns were saturated with water and then drained under quasi-equilibrium conditions using a hanging water column setup. Digital images (2048 x 2048 pixels) of the transmitted flux of neutrons were acquired at each imposed matric potential (~10-15 matric potential values per experiment) at the NCNR BT-2 neutron imaging beam line. Volumetric water contents were calculated on a pixel by pixel basis using Beer-Lambert s law after taking into account beam hardening and geometric corrections. To remove scattering effects at high water contents the volumetric water contents were normalized (to give relative saturations) by dividing the drying and wetting sequences of images by the images obtained at saturation and satiation, respectively. The resulting pixel values were then averaged and combined with information on the imposed basal matric potentials to give average water retention curves. The average relative saturations obtained by neutron radiography showed an approximate one-to-one relationship with the average values measured volumetrically using the hanging water column setup. There were no significant differences (at p < 0.05) between the parameters of the van Genuchten equation fitted to the average neutron radiography data and those estimated from replicated hanging water column data. Our results indicate that neutron imaging is a very effective tool for quantifying the average water retention curve.

  5. Optimal Monetary Policy with a Convex Phillips Curve

    E-Print Network [OSTI]

    Tambakis, Demosthenes N

    that inflation’s response to demand pressure is nonlinear and built this into estimation using the inverse unemployment rate. 9 Equation (6) holds regardless of the value of k. Because UN > ?, it requires that ?t > ?? for Ut to not diverge. Note... supply shocks, such as those of the 1970s. The convex Phillips curve functional form in this paper follows Debelle and Laxton (1997) and Laxton, Rose and Tambakis (1999). 6 At the aggregate level, convexity can be traced to the traditional Keynesian...

  6. Multigroup Radiation Transport in Supernova Light Curve Calculations |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilAElectronicCurves | SciTechLagrangeEnergy, Office of ScientificUS DeptUS

  7. Morgantown Energy Technology Center, technology summary

    SciTech Connect (OSTI)

    Not Available

    1994-06-01T23:59:59.000Z

    This document has been prepared by the DOE Environmental Management (EM) Office of Technology Development (OTD) to highlight its research, development, demonstration, testing, and evaluation activities funded through the Morgantown Energy Technology Center (METC). Technologies and processes described have the potential to enhance DOE`s cleanup and waste management efforts, as well as improve US industry`s competitiveness in global environmental markets. METC`s R&D programs are focused on commercialization of technologies that will be carried out in the private sector. META has solicited two PRDAs for EM. The first, in the area of groundwater and soil technologies, resulted in twenty-one contact awards to private sector and university technology developers. The second PRDA solicited novel decontamination and decommissioning technologies and resulted in eighteen contract awards. In addition to the PRDAs, METC solicited the first EM ROA in 1993. The ROA solicited research in a broad range of EM-related topics including in situ remediation, characterization, sensors, and monitoring technologies, efficient separation technologies, mixed waste treatment technologies, and robotics. This document describes these technology development activities.

  8. The Polyx photovoltaic technology: progress and prospects J. Fally (*), E. Fabre (**) and B. Chabot (***)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    529 The Polyx photovoltaic technology: progress and prospects J. Fally (*), E. Fabre (**) and B photovoltaic technologies due to its present industrial state and its possible improvements related to costs of this technology. A description and an analysis of photovoltaic markets well suited to this technology are given

  9. Learning or Lock-in: Optimal Technology Policies to Support Mitigation$

    E-Print Network [OSTI]

    Stock, Manfred

    sector (Nordhaus, 2009). In particular, there is concern that the social costs of technology to possible technology lock-ins? (ii) Is it likely for the social costs of innovation externalities to exceed the social costs of technology-specific instruments? (iii) In how far do policies with stronger technology

  10. Technology Deployment List | Department of Energy

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

    Technologies Technology Deployment Technology Deployment List Technology Deployment List The Federal Energy Management Program's (FEMP) Technology Deployment List features...

  11. Technology transfer | Argonne National Laboratory

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

    Technology transfer Technology Development and Commercialization at Argonne Read more about Technology Development and Commercialization at Argonne New Director to lead Technology...

  12. Ab initio curved-wave x-ray-absorption fine structure

    SciTech Connect (OSTI)

    Mustre de Leon, J.; Rehr, J.J.; Zabinsky, S.I. (Department of Physics, FM-15, University of Washington, Seattle, Washington (USA)); Albers, R.C. (Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico (USA))

    1991-09-01T23:59:59.000Z

    The most important elements of {ital ab} {ital initio} calculations of x-ray-absorption fine structure (XAFS) are studied. To obtain accurate results without {ital ad} {ital hoc} adjustable parameters, we find it essential to include (i) curved-wave effects, (ii) a complex, energy-dependent self-energy, (iii) an approximate molecular potential, and (iv) a fixed energy reference for the photoelectron wave number. Based on these findings, an automated code has been developed for {ital ab} {ital initio} calculations of single-scattering XAFS, in which curved-wave effects are treated exactly in terms of effective backscattering amplitudes, inelastic losses and self-energy shifts are incorporated with use of a Hedin-Lundqvist self-energy, an automated relativistic overlapping-atom muffin-tin potential is used, and the energy threshold is estimated from electron-gas theory. The efficiency of the code is made possible by analytic expressions for the Hedin-Lundqvist self-energy. This code replaces existing tables of XAFS phases and scattering amplitudes and yields reliable theoretical XAFS standards for arbitrary pairs of atoms throughout the Periodic Table ({ital Z}{le}94). These results are comparable to those from self-consistent calculations and are valid to within about 20 eV of the absorption edge. Comparisons with experiment are presented for Cu, Ge, Pt, Br{sub 2}, and GeCl{sub 4}. The calculated XAFS amplitudes are found to be accurate to within 15%; XAFS phases are accurate to within 0.2 rad; and nearest-neighbor distances are typically accurate to within 0.02 A.

  13. Biodetection Technologies for First Responders: 2014 Edition

    SciTech Connect (OSTI)

    Ozanich, Richard M.; Baird, Cheryl L.; Bartholomew, Rachel A.; Colburn, Heather A.; Straub, Tim M.; Bruckner-Lea, Cindy J.

    2014-03-28T23:59:59.000Z

    This report summarizes commercially-available, hand-portable technologies that can be used by first responders in the field. This is not meant to be an exhaustive list, nor an endorsement of any technology described herein. Rather, this report is meant to provide useful information about available technologies to help end-users make informed decisions about biodetection technology procurement and use. Information listed in this report is primarily vendor-provided; however, where possible it has been supplemented with additional information obtained from publications, reports, and websites. Manufacturers were given the chance to review summaries of their technologies from August through November 2013 to verify the accuracy of technical specifications, available references, and pricing.

  14. Possible textures of the fermion mass matrices

    E-Print Network [OSTI]

    Gupta, Manmohan

    2012-01-01T23:59:59.000Z

    Texture specific fermion mass matrices have played an important role in understanding several features of fermion masses and mixings. In the present work, we have given an overview of all possible cases of Fritzsch-like as well as non Fritzsch-like texture 6 and 5 zero fermion mass matrices. Further, for the case of texture 4 zero Fritzsch-like quark mass matrices, the issue of the hierarchy of the elements of the mass matrices and the role of their phases have been discussed. Furthermore, the case of texture 4 zero Fritzsch-like lepton mass matrices has also been discussed with an emphasis on the hierarchy of neutrino masses for both Majorana and Dirac neutrinos.

  15. Possible textures of the fermion mass matrices

    E-Print Network [OSTI]

    Manmohan Gupta; Gulsheen Ahuja

    2012-06-18T23:59:59.000Z

    Texture specific fermion mass matrices have played an important role in understanding several features of fermion masses and mixings. In the present work, we have given an overview of all possible cases of Fritzsch-like as well as non Fritzsch-like texture 6 and 5 zero fermion mass matrices. Further, for the case of texture 4 zero Fritzsch-like quark mass matrices, the issue of the hierarchy of the elements of the mass matrices and the role of their phases have been discussed. Furthermore, the case of texture 4 zero Fritzsch-like lepton mass matrices has also been discussed with an emphasis on the hierarchy of neutrino masses for both Majorana and Dirac neutrinos.

  16. Broadband turbulent spectra in gamma-ray burst light curves

    SciTech Connect (OSTI)

    Van Putten, Maurice H. P. M. [Astronomy and Space Science, Sejong University, 98 Gunja-Dong Gwangin-gu, Seoul 143-747 (Korea, Republic of); Guidorzi, Cristiano; Frontera, Filippo, E-mail: mvp@sejong.ac.kr [Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1, I-44122 Ferrara (Italy)

    2014-05-10T23:59:59.000Z

    Broadband power density spectra offer a window to understanding turbulent behavior in the emission mechanism and, at the highest frequencies, in the putative inner engines powering long gamma-ray bursts (GRBs). We describe a chirp search method alongside Fourier analysis for signal detection in the Poisson noise-dominated, 2 kHz sampled, BeppoSAX light curves. An efficient numerical implementation is described in O(Nnlog n) operations, where N is the number of chirp templates and n is the length of the light-curve time series, suited for embarrassingly parallel processing. For the detection of individual chirps over a 1 s duration, the method is one order of magnitude more sensitive in signal-to-noise ratio than Fourier analysis. The Fourier-chirp spectra of GRB 010408 and GRB 970816 show a continuation of the spectral slope with up to 1 kHz of turbulence identified in low-frequency Fourier analysis. The same continuation is observed in an average spectrum of 42 bright, long GRBs. An outlook on a similar analysis of upcoming gravitational wave data is included.

  17. Light curves from supernova shock breakout through an extended wind

    SciTech Connect (OSTI)

    Ginzburg, Sivan; Balberg, Shmuel [Racah Institute of Physics, The Hebrew University, Jerusalem 91904 (Israel)

    2014-01-01T23:59:59.000Z

    Recent observations suggest that some supernovae may be the result of an explosion into an optically thick circumstellar material, the product of pre-explosion mass loss (wind) by the progenitor star. This scenario has been studied previously both analytically and numerically. However, many previous studies base their analysis on the diffusion approximation for radiation transfer, which is inappropriate in the optically thin outer layers of the wind. Here we study the deviations from diffusion and calculate light curves more accurately using a Monte Carlo approach to photon transfer. We distinguish between 'compact' winds, for which the diffusion approximation is appropriate, and 'extended' winds, which require a more delicate treatment of the radiation. We show that this effect is more significant than that of the light-travel time difference to a distant observer, which has a secondary influence on the light curves of extended-wind systems. We also comment on the applicability of the widely used flux-limited diffusion approximation in this context: we find that it generally does not reproduce the Monte Carlo results. The flux-limited diffusion approximation leads to results that are not only quantitatively but also qualitatively wrong in the extended-wind regime.

  18. On the Nuclear Rotation Curve of M31

    E-Print Network [OSTI]

    Thomas S. Statler

    1999-05-08T23:59:59.000Z

    The nuclear rotation curve of M31, as observed by the Hubble Space Telescope Faint Object Camera Spectrograph, shows a significant disturbance coinciding with the off-center brightness peak, P1. This +/- 60 km/s feature is distinguished by a local velocity maximum centered on P1 and a local minimum approxmately 0.08" closer to P2. If the M31 double nucleus is an eccentric disk with an off-center density concentration, as suggested by Tremaine, then the self-gravity of the disk can produce just such a disturbance. The expected kinematic signature is calculated approximately by examining sequences of closed periodic orbits in a Kepler potential perturbed by a model disk potential that precesses at constant frequency. The perturbation forces a steep negative eccentricity gradient in the sequence of closed orbits through the densest part of the disk, which reverses the arrangement of periapsis and apoapsis with respect to the central mass. Stars making up the inner part of the density concentration are at apoapsis, while stars making up the outer part are at periapsis, producing a steep local velocity gradient. This result is independent of the details of the mass distribution. The projected rotation curve of the model is shown to closely resemble that of M31, giving strong support to the eccentric disk picture.

  19. OBSERVATIONS OF DOPPLER BOOSTING IN KEPLER LIGHT CURVES

    SciTech Connect (OSTI)

    Van Kerkwijk, Marten H.; Breton, Rene P.; Justham, Stephen [Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing (China); Rappaport, Saul A. [37-602B, MIT Department of Physics and Kavli Institute for Astrophysics and Space Research, 70 Vassar St., Cambridge, MA 02139 (United States); Podsiadlowski, Philipp [Sub-department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH (United Kingdom); Han, Zhanwen, E-mail: mhvk@astro.utoronto.ed [National Astronomical Observatories/Yunnan Observatory and Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011 (China)

    2010-05-20T23:59:59.000Z

    Among the initial results from Kepler were two striking light curves, for KOI 74 and KOI 81, in which the relative depths of the primary and secondary eclipses showed that the more compact, less luminous object was hotter than its stellar host. That result became particularly intriguing because a substellar mass had been derived for the secondary in KOI 74, which would make the high temperature challenging to explain; in KOI 81, the mass range for the companion was also reported to be consistent with a substellar object. We re-analyze the Kepler data and demonstrate that both companions are likely to be white dwarfs. We also find that the photometric data for KOI 74 show a modulation in brightness as the more luminous star orbits, due to Doppler boosting. The magnitude of the effect is sufficiently large that we can use it to infer a radial velocity amplitude accurate to 1 km s{sup -1}. As far as we are aware, this is the first time a radial-velocity curve has been measured photometrically. Combining our velocity amplitude with the inclination and primary mass derived from the eclipses and primary spectral type, we infer a secondary mass of 0.22 {+-} 0.03 M{sub sun}. We use our estimates to consider the likely evolutionary paths and mass-transfer episodes of these binary systems.

  20. Adsorption of annealed branched polymers on curved surfaces

    E-Print Network [OSTI]

    Wagner, Jef; Zandi, Roya

    2015-01-01T23:59:59.000Z

    The behavior of annealed branched polymers near adsorbing surfaces plays a fundamental role in many biological and industrial processes. Most importantly single stranded RNA in solution tends to fold up and self-bind to form a highly branched structure. Using a mean field theory, we both perturbatively and numerically examine the adsorption of branched polymers on surfaces of several different geometries in a good solvent. Independent of the geometry of the wall, we observe that as branching density increases, surface tension decreases. However, we find a coupling between the branching density and curvature in that a further lowering of surface tension occurs when the wall curves towards the polymer, but the amount of lowering of surface tension decreases when the wall curves away from the polymer. We find that for branched polymers confined into spherical cavities, most of branch-points are located in the vicinity of the interior wall and the surface tension is minimized for a critical cavity radius. For bra...

  1. Incorporation of learning curve costs in acquisition strategy optimization

    SciTech Connect (OSTI)

    Loerch, A.

    1994-12-31T23:59:59.000Z

    Each year, the United States Army procures billions of dollars worth of weapons and equipment so that it can accomplish its worldwide mission of deterrence. The process of deciding what to buy, in what quantities, and when to best respond to the threat posed by potential adversaries, is extremely complex, requiring extensive analysis. Two techniques commonly used in this analysis are mathematical programming and cost estimation. Although they are related through constraints on available procurement funds, the use of nonlinear cost learning curves, which more accurately represent system costs as a function of quantity produced, have not been incorporated into mathematical programming formulations that compute the quantities of items to be procured. As a result, the solutions obtained could be either suboptimal, or even infeasible with respect to budgetary limitations. We present a mixed integer programming formulation that uses a piecewise linear approximation of the learning curve costs for a more accurate portrayal of budgetary constraints. In addition, implementation issues are discussed, and performance results are given.

  2. Assessing Possibilities & Limits for Solar Cells

    E-Print Network [OSTI]

    Nayak, Pabitra K; Cahen, David

    2011-01-01T23:59:59.000Z

    What are the solar cell efficiencies that we can strive towards? We show here that several simple criteria, based on cell and module performance data, serve to evaluate and compare all types of today's solar cells. Analyzing these data allows to gauge in how far significant progress can be expected for the various cell types and, most importantly from both the science and technology points of view, if basic bounds, beyond those known today, may exist, that can limit such progress. This is important, because half a century after Shockley and Queisser (SQ) presented limits, based on detailed balance calculations for single absorber solar cells, those are still held to be the only ones, we need to consider; most efforts to go beyond SQ are directed towards attempts to circumvent them, primarily via smart optics, or optoelectronics. After formulating the criteria and analyzing known loss mechanisms, use of such criteria suggests - additional limits for newer types of cells, Organic and Dye-Sensitized ones, and th...

  3. Department of Information Technology

    E-Print Network [OSTI]

    Flener, Pierre

    Department of Information Technology Human-Computer Interaction http://www.it.uu.se/research/hci #12;InformationTechnology-HCI Department of Information Technology | www.it.uu.se Today's menu Who we and collaboration Teaching KoF 2007, effects? Vision and plans Challenges #12;InformationTechnology

  4. The Technology & Innovation Centre

    E-Print Network [OSTI]

    Mottram, Nigel

    The Technology & Innovation Centre #12;The Technology and Innovation Centre revolutionises the way in Scotland and further afield ­ including power and energy, renewable technologies, photonics and sensors, for industry, the Technology and Innovation Centre has already attracted major partners including Scottish

  5. Predictive Maintenance Technologies

    Broader source: Energy.gov [DOE]

    Several diagnostic technologies and best practices are available to assist Federal agencies with predictive maintenance programs.

  6. Bridging the Technology Innovation

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Bridging the Technology Innovation Gap Dr Ceri Williams Director of Medical Technologies Innovation Technologies #12;Distinctive Approach to Translating ResearchWe support innovation to reach TRL 5 enable real and Knowledge Centre #12;What is the Medical Technologies IKC? · All activities centre on research translation

  7. Pellet injection technology

    SciTech Connect (OSTI)

    Combs, S.K. (Oak Ridge National Laboratory, P.O. Box 2009, Oak Ridge, Tennessee 37831-8071 (United States))

    1993-07-01T23:59:59.000Z

    During the last 10 to 15 years, significant progress has been made worldwide in the area of pellet injection technology. This specialized field of research originated as a possible solution to the problem of depositing atoms of fuel deep within magnetically confined, hot plasmas for refueling of fusion power reactors. Using pellet injection systems, frozen macroscopic (millimeter-size) pellets composed of the isotopes of hydrogen are formed, accelerated, and transported to the plasma for fueling. The process and benefits of plasma fueling by this approach have been demonstrated conclusively on a number of toroidal magnetic confinement configurations; consequently, pellet injection is the leading technology for deep fueling of magnetically confined plasmas for controlled thermonuclear fusion research. Hydrogen pellet injection devices operate at very low temperatures ([congruent]10 K) at which solid hydrogen ice can be formed and sustained. Most injectors use conventional pneumatic (light gas gun) or centrifuge (mechanical) acceleration concepts to inject hydrogen or deuterium pellets at speeds of [congruent]1--2 km/s. Pellet injectors that can operate at quasi-steady state (pellet delivery rates of 1--40 Hz) have been developed for long-pulse fueling. The design and operation of injectors with the heaviest hydrogen isotope, tritium, offer some special problems because of tritium's radioactivity. To address these problems, a proof-of-principle experiment was carried out in which tritium pellets were formed and accelerated to speeds of 1.4 km/s. Tritium pellet injection is scheduled on major fusion research devices within the next few years. Several advanced accelerator concepts are under development to increase the pellet velocity. One of these is the two-stage light gas gun, for which speeds of slightly over 4 km/s have already been reported in laboratory experiments with deuterium ice.

  8. Supporting evidence for double-C curve kinetics in the isothermal (delta) --> (alpha)' phase transformation in a Pu-Ga alloy

    SciTech Connect (OSTI)

    Oudot, B; Blobaum, K M; Wall, M A; Schwartz, A J

    2006-07-21T23:59:59.000Z

    Time-temperature-transformation (TTT) diagrams for the {delta} {yields} {alpha}{prime} transformation in a number of Pu-Ga alloys were first reported in 1975 by Orme et al. Unlike typical single-C curve kinetics observed in most isothermal martensitic transformations, the Pu-1.9 at.% Ga alloy exhibits two noses, and thus double-C curve kinetics. The authors attributed the occurrence of the double C to a difference in mechanism: a massive transformation for the upper C and a martensitic transformation for the lower C. Since that time, the nature, and the existence of the double C have received only limited attention. The results of Deloffre et al. suggest a confirmation of this behavior, but the fundamental origin of the double C remains unknown. Here, we apply differential scanning calorimetry (DSC) as an alternative approach to acquiring the TTT data and our experimental evidence suggests a confirmation of the double-C behavior after 18 hours of isothermal hold time. In addition, we report three exothermic peaks corresponding to transformations during cooling at 20 C/min prior to the isothermal holds. These three peaks are reproducible and suggest a number of possibilities for the origin of the unique kinetics: {alpha}{prime} forms with different morphologies, or from different embryos in the upper and lower C curves; {alpha}{prime} forms directly in one C curve and forms via an intermediate phase in the other C curve; the two C curves result from {alpha}{prime} forming by two or more distinct mechanisms (e.g., massive and martensitic transformations).

  9. Soil washing technology evaluation

    SciTech Connect (OSTI)

    Suer, A.

    1995-04-01T23:59:59.000Z

    Environmental Restoration Engineering (ERE) continues to review innovative, efficient, and cost effective technologies for SRS soil and/or groundwater remediation. As part of this effort, this technical evaluation provides review and the latest information on the technology for SRS soil remediation. Additional technology evaluation reports will be issued periodically to update these reports. The purpose of this report is to review the soil washing technology and its potential application to SRS soil remediation. To assess whether the Soil Washing technology is a viable option for SRS soil remediation, it is necessary to review the technology/process, technology advantages/limitations, performance, applications, and cost analysis.

  10. Technology in water conservation 

    E-Print Network [OSTI]

    Finch, Dr. Calvin

    2013-01-01T23:59:59.000Z

    2 tx H2O Summer 2013 Column by Dr. Calvin Finch, Water Conservation and Technology Center director WAT E R CONSERVATION & TECHNOLOGY CENTER Securing Our Water Future It is not unusual for individuals to describe water conservation as a... conservation, however, is just as dependent on technological factors. #27;e technology does not have to be complex to be important #20; consider high e#23;ciency toilets and showerheads. #27;ese everyday appliances largely rely on simple technologies...

  11. Technology in water conservation

    E-Print Network [OSTI]

    Finch, Dr. Calvin

    2013-01-01T23:59:59.000Z

    2 tx H2O Summer 2013 Column by Dr. Calvin Finch, Water Conservation and Technology Center director WAT E R CONSERVATION & TECHNOLOGY CENTER Securing Our Water Future It is not unusual for individuals to describe water conservation as a... conservation, however, is just as dependent on technological factors. #27;e technology does not have to be complex to be important #20; consider high e#23;ciency toilets and showerheads. #27;ese everyday appliances largely rely on simple technologies...

  12. Technology Overview Using Case Studies of Alternative Landfill Technologies

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    Technology Overview Using Case Studies of Alternative Landfill Technologies and Associated Regulatory Topics Prepared by Interstate Technology & Regulatory Council Alternative Landfill Technologies of Alternative Landfill Technologies and Associated Regulatory Topics March 2003 Prepared by Interstate

  13. Building Technologies Office Window and Envelope Technologies...

    Energy Savers [EERE]

    by 2000 (10.7 billion in current dollars) Source: American Energy Innovation Council Case Studies on the Government's Role in Energy Technology Innovation "Low-Emissivity...

  14. NATIONAL ENERGY TECHNOLOGY LABORATORY Technology Transfer Novel...

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

    for "Outstanding Commercialization Success" from the Federal Laboratory Consortium for Technology Transfer. On October 4, 2012, the NETL team who developed this alloy received...

  15. Vehicle Technologies Office: Graduate Automotive Technology Education...

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

    Centers of Excellence to provide future generations of engineers and scientists with knowledge and skills in advanced automotive technologies. By funding curriculum...

  16. Vehicle Technologies Office: Electric Drive Technologies | Department...

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

    Electronics and Electric Motor R&D North American Power Electronics Supply Chain Analysis Benchmarking EV and HEV Technology View all presentations from the 2014 Merit Review....

  17. POSSIBLE PHASE LOOP FOR THE GLOBAL DECOUPLING.

    SciTech Connect (OSTI)

    LUO, Y.; CAMERON, P.; DELLA PENNA, A.; JONES, R.; ET AL.

    2005-05-16T23:59:59.000Z

    The two eigentunes Q{sub I} and Q{sub II}, two eigenmode amplitude ratios R{sub I} and R{sub II}, and two eignmode phase differences {Delta}{phi}{sub I} and {Delta}{phi}{sub II}, are defined as the coupling observables for the linear weak difference betatron coupling. Simulations were carried out to investigate their behaviors in global decoupling scans. It was found that the amplitude ratios R{sub I,II} are more sensitive than the tune split when the decoupling scan is approaching the global uncoupled point, and that the phase differences {Delta}{phi}{sub I,II} tell the right global decoupling direction, the right strength combination of the skew quadrupoles or families. The analytical solution to these six coupling observables is calculated through both the strict matrix approach and the perturbation Hamiltonian approach. The constant phase differences in the right decoupling direction hint a possible global decoupling phase loop. Dedicated beam experiments were carried out at the Relativistic Heavy Ion Collider (RHIC). The preliminary results from the beam experiments are presented. These six parameters can be used for the global decoupling in feed-back mode, especially on the non-stop energy ramp.

  18. Possible Generalizations within Braneworld Scenarios: Torsion fields

    E-Print Network [OSTI]

    J M Hoff da Silva; Roldao da Rocha

    2010-12-09T23:59:59.000Z

    In this Chapter we introduce the aspects in which torsion can influence the formalism of braneworld scenarios in general, and also how it is possible to measure such kind of effects, namely, for instance, the blackstring transverse area corrections and variation of quasar luminosity due to those corrections. We analyze the projected effective Einstein equation in a 4-dimensional arbitrary manifold embedded in a 5-dimensional Riemann-Cartan manifold. The Israel-Darmois matching conditions are investigated, in the context where the torsion discontinuity is orthogonal to the brane. Unexpectedly, the presence of torsion terms in the connection does not modify such conditions whatsoever, despite of the modification in the extrinsic curvature and in the connection. Then, by imposing the Z2-symmetry, the Einstein equation obtained via Gauss-Codazzi formalism is extended, in order to now encompass the torsion terms. We also show that the factors involving contorsion change drastically the effective Einstein equation on the brane, as well as the effective cosmological constant. Also, we present gravitational aspects of braneworld models endowed with torsion terms both in the bulk and on the brane. In order to investigate a conceivable and measurable gravitational effect, arising genuinely from bulk torsion terms, we analyze the variation in the black hole area by the presence of torsion. Furthermore, we extend the well known results about consistency conditions in a framework that incorporates brane torsion terms. It is shown, in a rough estimate, that the resulting effects are generally suppressed by the internal space volume.

  19. Distinguishing magnetic particle size of iron oxide nanoparticles with first-order reversal curves

    SciTech Connect (OSTI)

    Kumari, Monika; Hirt, Ann M., E-mail: ann.hirt@erdw.ethz.ch [Department of Earth Sciences, Institute of Geophysics, ETH-Zurich, Sonneggstrasse 5, CH-8092 Zurich (Switzerland); Widdrat, Marc; Faivre, Damien [Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Science Park Golm, D-14424 Potsdam (Germany); Tompa, Éva; Pósfai, Mihály [Department of Earth and Environmental Sciences, University of Pannonia, Egyetem u. 10, H-8200 Veszprém (Hungary); Uebe, Rene; Schüler, Dirk [Department Biologie I, LMU Munich, Großhaderner Str. 2, D-82152 Martinsried (Germany)

    2014-09-28T23:59:59.000Z

    Magnetic nanoparticles encompass a wide range of scientific study and technological applications. The success of using the nanoparticles in various applications demands control over size, dispersibility, and magnetics. Hence, the nanoparticles are often characterized by transmission electron microscopy (TEM), X-ray diffraction, and magnetic hysteresis loops. TEM analysis requires a thin layer of dispersed particles on the grid, which may often lead to particle aggregation thus making size analysis difficult. Magnetic hysteresis loops on the other hand provide information on the bulk property of the material without discriminating size, composition, and interaction effects. First order reversal curves (FORCs), described as an assembly of partial hysteresis loops originating from the major loop are efficient in identifying the domain size, composition, and interaction in a magnetic system. This study presents FORC diagrams on a variety of well-characterized biogenic and synthetic magnetite nanoparticles. It also introduces deconvoluted reversible and irreversible components from FORC as an important method for obtaining a semi-quantitative measure of the effective magnetic particle size. This is particularly important in a system with aggregation and interaction among the particles that often leads to either the differences between physical size and effective magnetic size. We also emphasize the extraction of secondary components by masking dominant coercivity fraction on FORC diagram to explore more detailed characterization of nanoparticle systems.

  20. A Table of Areas Under Disease Progress Curves.

    E-Print Network [OSTI]

    Johnson, Dennis A.; Wilcoxson, Roy D.

    1980-01-01T23:59:59.000Z

    o n s d a r i n g t h e development o f t h e ep idemic . The v a l u e s f o r AUDPC a r e l i s t e d under t h e days between t h e o b s e r v a t i o n s o f d i s e a s e . Thus , from d i s e a s e s e v e r i t i e s t a... a i d o f t h e m o d i f i e d c o b b Scale (12). The rus t sever i tyda tawere converted Fig. 2 Disease Progress Curves of Three Winter Wheat Cultivars Infected with Puccinia recondita f. sp. tritici. - TAM W-101 - - - I 1 A 0 ~ i m e...

  1. Relativistic scaling laws for the light curve in supernovae

    E-Print Network [OSTI]

    Zaninetti, L

    2015-01-01T23:59:59.000Z

    In order to explain light curve (LC) for Supernova (SN) we derive a classical formula for the conversion of the flux of kinetic energy into radiation. We then introduce a correction for the absorption adopting an optical depth as function of the time. The developed framework allows to fit the LC of type Ia SN 2005cf ( B and V ) and type IIp SN 2004A (B,V,I and R ). A relativistic formula for the flux of kinetic energy is also derived in terms of a Taylor expansion and the application is done to the LC of GRB 050814. The decay of the radioactive isotopes as a driver the LC for SNs is also reviewed and a new formulation is introduced. The Arnett's formula for bolometric luminosity is corrected for the optical depth and applied to SN 2001ay.

  2. Periodic relativity: deflection of light, acceleration, rotation curves

    E-Print Network [OSTI]

    Vikram H. Zaveri

    2014-12-08T23:59:59.000Z

    Vectorial analysis relating to derivation of deflection of light is presented. Curvilinear acceleration is distinguished from the Newtonian polar conic acceleration. The difference between the two is due to the curvature term. Lorentz invariant expression for acceleration is derived. A physical theory of rotation curves of galaxies based on second solution to Einstein's field equation is presented. Theory is applied to Milky Way, M31, NGC3198 and Solar system. Modified Kepler's third law yields correct orbital periods of stars in a galaxy. Deviation factor in the line element of the theory happens to be the ratio of the Newtonian gravitational acceleration to the measured acceleration of the star in the galaxy. Therefore this deviation factor can replace the MOND function.

  3. Enhanced carbon-oxygen log interpretations using supplemental log curves

    SciTech Connect (OSTI)

    Wyatt, D.F. Jr.; Jacobson, L.A.; Fox, P.

    1994-12-31T23:59:59.000Z

    Supplemental measurements from induced nuclear spectrometry tools are examined to demonstrate what additional information they provide about the well and reservoir conditions. Logs in shut-in wells from Indonesia provide examples of oxygen activation measurements showing cross-flow from one reservoir to another via open perforations. Leaking squeezed perforations were also observed. An example from Alaska shows radioactive scale build-up in the casing which spectral analysis identifies as a mixture of uranium and thorium salts. Another log, where the casing fluid was replaced with crude oil, demonstrates a technique for identifying cement channels. Logs from Nigeria comparing oil saturation estimates before and after a squeeze operation illustrate the effect of casing fluid flushing of the formation through open perforations. Understanding the diagnostic character of these curves leads to higher confidence in the overall log interpretation process.

  4. Photon Green Functions in Curved Space-Time

    E-Print Network [OSTI]

    Giuseppe Bimonte; Enrico Calloni; Luciano Di Fiore; Giampiero Esposito; Leopoldo Milano; Luigi Rosa

    2005-11-23T23:59:59.000Z

    Quantization of electrodynamics in curved space-time in the Lorenz gauge and with arbitrary gauge parameter makes it necessary to study Green functions of non-minimal operators with variable coefficients. Starting from the integral representation of photon Green functions, we link them to the evaluation of integrals involving Gamma-functions. Eventually, the full asymptotic expansion of the Feynman photon Green function at small values of the world function, as well as its explicit dependence on the gauge parameter, are obtained without adding by hand a mass term to the Faddeev-Popov Lagrangian. Coincidence limits of second covariant derivatives of the associated Hadamard function are also evaluated, as a first step towards the energy-momentum tensor in the non-minimal case.

  5. Graphene: QFT in curved spacetimes close to experiments

    E-Print Network [OSTI]

    Alfredo Iorio

    2013-04-09T23:59:59.000Z

    A recently proposed step-by-step procedure, to merge the low-energy physics of the $\\pi$-bonds electrons of graphene, and quantum field theory on curved spacetimes, is recalled. The last step there is the proposal of an experiment to test a Hawking-Unruh effect, emerging from the model, that manifests itself as an exact (within the model) prediction for the electronic local density of states, in the ideal case of the graphene membrane shaped as a Beltrami pseudosphere. A discussion about one particular attempt to experimentally test the model on molecular graphene is presented, and it is taken as an excuse to solve some basic issues that will help future experiments. In particular, it is stated that the effect should be visible on generic surfaces of constant negative Gaussian curvature, that are infinite in number.

  6. Fields and fluids on curved non-relativistic spacetimes

    E-Print Network [OSTI]

    Geracie, Michael; Roberts, Matthew M

    2015-01-01T23:59:59.000Z

    We consider non-relativistic curved geometries and argue that the background structure should be generalized from that considered in previous works. In this approach the derivative operator is defined by a Galilean spin connection valued in the Lie algebra of the Galilean group. This includes the usual spin connection plus an additional "boost connection" which parameterizes the freedom in the derivative operator not fixed by torsion or metric compatibility. As an example of this approach we develop the theory of non-relativistic dissipative fluids and find significant differences in both equations of motion and allowed transport coefficients from those found previously. Our approach also immediately generalizes to systems with independent mass and charge currents as would arise in multicomponent fluids. Along the way we also discuss how to write general locally Galilean invariant non-relativistic actions for multiple particle species at any order in derivatives. A detailed review of the geometry and its rela...

  7. Curved and diffuse interface effects on the nuclear surface tension

    E-Print Network [OSTI]

    V. M. Kolomietz; S. V. Lukyanov; A. I. Sanzhur

    2012-01-30T23:59:59.000Z

    We redefine the surface tension coefficient for a nuclear Fermi-liquid drop with a finite diffuse layer. Following Gibbs-Tolman concept, we introduce the equimolar radius R_e of sharp surface droplet at which the surface tension is applied and the radius of tension surface R_s which provides the minimum of the surface tension coefficient \\sigma. This procedure allows us to derive both the surface tension and the corresponding curvature correction (Tolman length) correctly for the curved and diffuse interface. We point out that the curvature correction depends significantly on the finite diffuse interface. This fact is missed in traditional nuclear considerations of curvature correction to the surface tension. We show that Tolman's length \\xi is negative for nuclear Fermi-liquid drop. The value of the Tolman length is only slightly sensitive to the Skyrme force parametrization and equals \\xi=-0.36 fm.

  8. Quantum field theory in spaces with closed timelike curves

    SciTech Connect (OSTI)

    Boulware, D.G. (Department of Physics FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1992-11-15T23:59:59.000Z

    Gott spacetime has closed timelike curves, but no locally anomalous stress energy. A complete orthonormal set of eigenfunctions of the wave operator is found in the special case of a spacetime in which the total deficit angle is 2{pi}. A scalar quantum field theory is constructed using these eigenfunctions. The resultant interacting quantum field theory is not unitary because the field operators can create real, on-shell, particles in the noncausal region. These particles propagate for finite proper time accumulating an arbitrary phase before being annihilated at the same spacetime point as that at which they were created. As a result, the effective potential within the noncausal region is complex, and probability is not conserved. The stress tensor of the scalar field is evaluated in the neighborhood of the Cauchy horizon; in the case of a sufficiently small Compton wavelength of the field, the stress tensor is regular and cannot prevent the formation of the Cauchy horizon.

  9. SciTech Connect: Possible Pathways for Increasing Natural Gas...

    Office of Scientific and Technical Information (OSTI)

    Conference: Possible Pathways for Increasing Natural Gas Use for Transportation (Presentation) Citation Details In-Document Search Title: Possible Pathways for Increasing Natural...

  10. Possible Dynamically Gated Conductance along Heme Wires in Bacterial...

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

    Possible Dynamically Gated Conductance along Heme Wires in Bacterial Multiheme Cytochromes. Possible Dynamically Gated Conductance along Heme Wires in Bacterial Multiheme...

  11. The 60% Efficient Diesel Engine: Probably, Possible, Or Just...

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

    The 60% Efficient Diesel Engine: Probably, Possible, Or Just a Fantasy? The 60% Efficient Diesel Engine: Probably, Possible, Or Just a Fantasy? 2005 Diesel Engine Emissions...

  12. SHARED TECHNOLOGY TRANSFER PROGRAM

    SciTech Connect (OSTI)

    GRIFFIN, JOHN M. HAUT, RICHARD C.

    2008-03-07T23:59:59.000Z

    The program established a collaborative process with domestic industries for the purpose of sharing Navy-developed technology. Private sector businesses were educated so as to increase their awareness of the vast amount of technologies that are available, with an initial focus on technology applications that are related to the Hydrogen, Fuel Cells and Infrastructure Technologies (Hydrogen) Program of the U.S. Department of Energy. Specifically, the project worked to increase industry awareness of the vast technology resources available to them that have been developed with taxpayer funding. NAVSEA-Carderock and the Houston Advanced Research Center teamed with Nicholls State University to catalog NAVSEA-Carderock unclassified technologies, rated the level of readiness of the technologies and established a web based catalog of the technologies. In particular, the catalog contains technology descriptions, including testing summaries and overviews of related presentations.

  13. Pulse Energy Typical Curve Validation Draft December 15, 2011

    E-Print Network [OSTI]

    processes, technologies for building energy performance monitoring, smart buildings, ongoing commissioning-based energy information system (EIS) software for commercial buildings. One distinguishing aspect of the Pulse to advance the deployment of EIS, which are capable of enabling up to 20% reductions in building energy use

  14. Training & Technology Solutions Queens College ~ Office of Converging Technologies ~ Training & Technology Solutions

    E-Print Network [OSTI]

    Johnson Jr.,, Ray

    Training & Technology Solutions Queens College ~ Office of Converging Technologies ~ Training & Technology Solutions 718-997-4875 ~ training@qc.cuny.edu ~ I-Bldg 214 Advisor Center Navigation: Login #12;Training & Technology Solutions Queens College ~ Office of Converging Technologies ~ Training

  15. Use of experience curves to estimate the future cost of power plants with CO2 capture

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Antes, Matt; Berkenpas, Michael; Davison, John

    2007-01-01T23:59:59.000Z

    and storage costs) Technology Cost of electricity (excludingstages of commercialization Technology Capital cost Flue gasPlant type and technology Capital cost $/kW NGCC plant

  16. Network technology for depot modernization

    SciTech Connect (OSTI)

    Hostick, C.J.

    1990-12-01T23:59:59.000Z

    This report was prepared by the Pacific Northwest Laboratory to summarize existing and emerging information system technology and standards applicable to Depot System Command (DESCOM) modernization efforts. The intent of this summarization is to provide the Revitalization of Army Depots for the Year 2000 (READY 2000) team a clear understanding of the enabling information system technologies required to support effective modernization activities. Much of the information contained in this report was acquired during the last year in support of the US Army Armament, Munitions, and Chemical Command (AMCCOM) Facility Integrated Manufacturing Management System (FIMMS) project at PNL, which is targeting the modernization of plant-wide information systems at Army Ammunition Plants. The objective of information system modernization is to improve the effectiveness of an organization in performing its mission. Information system modernization strives to meet this objective by creating an environment where data is electronically captured near the source and readily available to all areas of the organization. Advanced networks, together with related information system technology, are the enabling mechanisms that make modern information system infrastructures possible. The intent of this paper is to present an overview of advanced information system network technology to support depot modernization planners in making technology management decisions. Existing and emerging Open System Interconnection (OSI) and Government Open System Interconnection Profile (GOSIP) standards are explained, as well as a brief assessment of existing products compliant with these standards. Finally, recommendations for achieving plant-wide integration using existing products are presented, and migration strategies for full OSI compliance are introduced. 5 refs., 16 figs. (JF)

  17. Another algebraic variational principle for the spectral curve of matrix models

    E-Print Network [OSTI]

    B. Eynard

    2014-07-31T23:59:59.000Z

    We propose an alternative variational principle whose critical point is the algebraic plane curve associated to a matrix model (the spectral curve, i.e. the large $N$ limit of the resolvent). More generally, we consider a variational principle that is equivalent to the problem of finding a plane curve with given asymptotics and given cycle integrals. This variational principle is not given by extremization of the energy, but by the extremization of an "entropy".

  18. Possible features of galactic halo with electric field and observational constraints

    E-Print Network [OSTI]

    Koushik Chakraborty; Farook Rahaman; Saibal Ray; Arka Nandi; Nasarul Islam

    2014-12-15T23:59:59.000Z

    Observed rotational curves of neutral hydrogen clouds strongly support the fact that galactic halo contains huge amount of nonluminous matter, the so called gravitational dark matter. The nature of dark matter is a point of debate among the researchers. Recent observations reported the presence of ions of O, S, C, Si etc in the galactic halo and intergalactic medium. This supports the possibility of existence of electric field in the galactic halo region. We therefore propose a model of galactic halo considering this electric field arising due to charged particles as one of the inputs for the background spacetime metric. Considering dark matter as an anisotropic fluid we obtain the expressions for energy density and pressure of dark matter there and consequently the equation of state of dark matter. Various other aspects of the solutions are also analyzed along with a critical comparison with and constraints of different observational evidences.

  19. Utilities Inspection Technologies

    E-Print Network [OSTI]

    Messock, R. K.

    Preventive and predictive maintenance programs are enhanced by using various inspection technologies to detect problems and potential failures before catastrophic failure. This paper discusses successful inspection technologies that have been...

  20. Technology Readiness Assessment Guide

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

    2011-09-15T23:59:59.000Z

    The Guide assists individuals and teams involved in conducting Technology Readiness Assessments (TRAs) and developing Technology Maturation Plans (TMPs) for the DOE capital asset projects subject to DOE O 413.3B. Cancels DOE G 413.3-4.

  1. UNIVERSITY of STRATHCLYDE TECHNOLOGY &

    E-Print Network [OSTI]

    Mottram, Nigel

    electricity networks and distribution systems, through to using smart grid technologies for more effective of dynamic collaborations delivering productive outcomes. #12;#12;LOW CARBON POWER AND ENERGY FUTURE CITIES Advanced Manufacturing Future Cities Health Technologies Working collaboratively, programmes within

  2. Science and technology for industrial ecology

    SciTech Connect (OSTI)

    Gilmartin, T.J.; Allenby, B.R.

    1996-07-10T23:59:59.000Z

    Scientific and technological communities have a significant role to play and responsibility for the evolution of global sustainability (continuously improving quality of life into the indefinite future). Sustainability is not possible without a substantially improved science and technology basis for industrial ecology. Society needs data and understanding of complex ecological issues to govern itself in a sustainable manner. We should: support and develop multi-disciplinary programs which create the scientific basis for understanding natural and anthropogenic complex systems and for developing environmentally and economically efficient technology; demonstrate a systems-based approach to science and technology issues which is life-cycle comprehensive, integrates environmental considerations, and promotes conservation of natural resources; and encourage development of responsible, technically and scientifically valid, cost-effective environmental laws and practices.

  3. Development of a Discharge-Stage Rating Curve for Strawberry Creek

    E-Print Network [OSTI]

    Hunt, Lisa

    2011-01-01T23:59:59.000Z

    Curve for Strawberry Creek Lisa Hunt References Charbonneau,R. 1987. Strawberry Creek Management Plan, Office ofand V.H. Resh. 1992. Strawberry Creek on the University of

  4. Multi-phase decline curve analysis with normalized rate and time

    E-Print Network [OSTI]

    Fraim, Michael Lee

    1988-01-01T23:59:59.000Z

    Material Balance Equation. The purpose of the current work is to develop a normalized time and a normalized rate which can be applied to the Fetkovich type curve or any other decline type curve. From a Fetkovich type curve analysis, an engineer can...MULTI-PHASE DECLINE CURVE ANALYSIS WITH NORMALIZED RATE AND TIME A Thesis by MICHAEL LEE FRAIM Submitted to the Graduate College of Texas ARM University &n partial fulf 111ment of the requirements for the degree of MASTER OF SCIENCE August...

  5. Use of experience curves to estimate the future cost of power plants with CO2 capture

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Antes, Matt; Berkenpas, Michael; Davison, John

    2007-01-01T23:59:59.000Z

    the combined cycle gas turbine—an experience curve analysis.reduction (SCR) systems, gas turbine combined cycle (GTCC)catalytic reduction (SCR) Gas turbine combined cycle (GTCC)

  6. An Econometric Model of the Yield Curve With Macroeconomic Jump Effects

    E-Print Network [OSTI]

    Piazzesi, Monika

    2001-01-01T23:59:59.000Z

    Kenneth Singleton (1997). “An Econometric Model of the TermDiscretely-Sampled Data. ” Econometric Theory 4, pp. 231-An Econometric Model of the Yield Curve with Macroeconomic

  7. Timescale stretch parameterization of Type Ia supernova B-band light curves

    E-Print Network [OSTI]

    2001-01-01T23:59:59.000Z

    the light curve of Type Ia supernovae discovered by theof the high-redshift supernovae. This work was supported inobjects. Subject headings: supernovae: general – cosmology:

  8. Use of experience curves to estimate the future cost of power plants with CO2 capture

    E-Print Network [OSTI]

    Rubin, Edward S.; Yeh, Sonia; Antes, Matt; Berkenpas, Michael; Davison, John

    2007-01-01T23:59:59.000Z

    2004. Experience curves for power plant emission controlassessments of fossil fuel power plants with CO 2 capturethe future cost of power plants with CO 2 capture Edward S.

  9. 2014 Annual Merit Review, Vehicle Technologies Office - 08 Technology...

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

    -1 8. Technology Integration The Technology Integration subprogram accelerates the adoption and use of alternative fuel and advanced technology vehicles to help meet national...

  10. DOE Vehicle Technologies Program 2009 Merit Review Report - Technology...

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

    Integration and Education DOE Vehicle Technologies Program 2009 Merit Review Report - Technology Integration and Education Merit review of DOE Vehicle Technologies Program research...

  11. Vehicle Technologies Office: 2013 Fuel and Lubricant Technologies...

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

    Fuel and Lubricant Technologies R&D Annual Progress Report Vehicle Technologies Office: 2013 Fuel and Lubricant Technologies R&D Annual Progress Report This report describes the...

  12. Vehicle Technologies Office: 2008 Oak Ridge Transportation Technology...

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

    Oak Ridge Transportation Technology Program Annual Report Vehicle Technologies Office: 2008 Oak Ridge Transportation Technology Program Annual Report ornlttpreportfy08.pdf More...

  13. Does Doctrine Drive Technology or Does Technology Drive Doctrine?

    E-Print Network [OSTI]

    Blasko, Dennis

    2010-01-01T23:59:59.000Z

    Brief No. 4 September 2010 Does Doctrine Drive Technology orDoes Technology Drive Doctrine? Dennis Blasko Summary Wthat emphasizes strategy over technology and may hold some

  14. Uncertainty in Experience CurvesUncertainty in Experience Curves for Climate Policy Analysis:for Climate Policy Analysis

    E-Print Network [OSTI]

    Pittsburgh, Pennsylvania Presentation to the NAS Workshop on Modeling the Economics of Greenhouse Gas converters installed on automobiles · No "natural" markets for these technologies; rather, major markets in Service CumulativeGWe Japan Germany Others U.S. FGD = Flue Gas Desulfurization system (typical SO2 removal

  15. Technology Integration Overview

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

    Identify chronic vehicle or infrastructure field problems * Incident investigations (technology failures) * Capture lessons learned and develop best practices Technical & Problem...

  16. States & Emerging Energy Technologies

    Broader source: Energy.gov [DOE]

    This presentation, given through the DOE's Technical Assitance Program (TAP), provides information on States & Emerging Energy Technologies.

  17. Deployment of Emerging Technologies

    Broader source: Energy.gov [DOE]

    Presentation covers the FUPWG Deployment of Emerging Technologies. Presented by Brad Gustafson, Department of Energy, held on November 1, 2006.

  18. Photovoltaic Technology Incubator Awards

    SciTech Connect (OSTI)

    Not Available

    2007-06-01T23:59:59.000Z

    This factsheet gives an overview of the Photovoltaic (PV) Technology Incubator Awards and the Solar America Initiative (SAI).

  19. Characterization, Monitoring, and Sensor Technology Integrated Program (CMST-IP). Technology summary

    SciTech Connect (OSTI)

    Not Available

    1994-04-01T23:59:59.000Z

    The Characterization, Monitoring, and Sensor Technology Integrated Program seeks to deliver needed technologies, timely and cost-effectively, to the Office of Waste Management (EM-30), the Office of Environmental Restoration (EM-40), and the Office of Facility Transition and Management (EM-60). The scope of characterizations monitoring, and sensor technology needs that are required by those organizations encompass: (1) initial location and characterization of wastes and waste environments - prior to treatment; (2) monitoring of waste retrieval, remediation and treatment processes; (3) characterization of the co-position of final waste treatment forms to evaluate the performance of waste treatments processes; and (4) site closure and compliance monitoring. Wherever possible, the CMST-IP fosters technology transfer and commercialization of technologies that it sponsors.

  20. The Global Energy Challenge and Possible Solu6ons

    E-Print Network [OSTI]

    Rubloff, Gary W.

    in a Petroleum Context Marginal Conven6onal Oil Oil Shale #12;GLOBAL FUEL RESERVES Source demand vs. GDP per capita Economic Prosperity Energy Use #12;OIL SUPPLY COST CURVE #12;20 40 60 80 100 112 Venezuela Heavy Oil Deep Water Arc6c Sugarcane Et

  1. Web Technology (elective package)

    E-Print Network [OSTI]

    Franssen, Michael

    Web Technology (elective package) Offered by: Department of Mathematics and Computer Science? Computer Science-based approaches and enabling technologies for the web. Course descriptions Human and efficient. Web Technology The web has become the major source of information retrieval and is playing

  2. SPACE TECHNOLOGY Actual Estimate

    E-Print Network [OSTI]

    SPACE TECHNOLOGY TECH-1 Actual Estimate Budget Authority (in $ millions) FY 2011 FY 2012 FY 2013 FY.7 247.0 Exploration Technology Development 144.6 189.9 202.0 215.5 215.7 214.5 216.5 Notional SPACE TECHNOLOGY OVERVIEW .............................. TECH- 2 SBIR AND STTR

  3. Department of Science, Technology, &

    E-Print Network [OSTI]

    Acton, Scott

    Developing Leaders of Innovation Department of Science, Technology, & Society #12;Understanding the relationship between technology and society is crucial to becoming a successful leader in any field. #12;Our Students The University of Virginia Department of Science, Technology, and Society offers a comprehensive

  4. Technology Forecasting Scenario Development

    E-Print Network [OSTI]

    Technology Forecasting and Scenario Development Newsletter No. 2 October 1998 Systems Analysis was initiated on the establishment of a new research programme entitled Technology Forecasting and Scenario and commercial applica- tion of new technology. An international Scientific Advisory Panel has been set up

  5. New Technology Demonstration Program

    E-Print Network [OSTI]

    New Technology Demonstration Program Technical Brief FEMPFederal Energy Management Program Tom for saving energy in refrigerated walk-in coolers, and to evaluate the potential for this technology in Federal facilities. The focus of this study was on a single manufacturer of the technology, Nevada Energy

  6. Technology Advertising Contact Information

    E-Print Network [OSTI]

    Peters, Richard

    Overview #12;Technology Advertising Contact Information Alex Sheath 8596 4063 asheath Overview Our online Technology section is geared towards an IT professional environment, reaching a range of technology enthusiasts from every day gadget consumers to business decision makers where enterprise solutions

  7. Science, technology and innovation

    E-Print Network [OSTI]

    Sussex, University of

    Science, technology and innovation Taught degrees MSc in Innovation and Sustainability for International Development 1 year full time/2 years part time Technological innovation lies at the heart in the academic and political circles related to the impact of science, technology and innovation in the context

  8. University Libraries Technology Plan

    E-Print Network [OSTI]

    Moore, Paul A.

    Libraries Bowling Green State University #12;Table of Contents Introduction ..................................................................19 Page 2 of 19 Technology Plan, 2003-2005 University Libraries Bowling Green State University #12University Libraries Technology Plan 2003-2005 Page 1 of 19 Technology Plan, 2003-2005 University

  9. Microsoft Technology Centers Novosibirsk

    E-Print Network [OSTI]

    Narasayya, Vivek

    -depth knowledge of Microsoft products and technologies ensure that you benefit from development best practices discovery, tailored product and technology drill-downs, and expert presentations. It culminates practices, and risk analysis to chief technology officers, architects, and senior members of your

  10. Microsoft Technology Centers Philadelphia

    E-Print Network [OSTI]

    Narasayya, Vivek

    -depth knowledge of Microsoft products and technologies ensure that you benefit from development best practices discovery, tailored product and technology drill-downs, and expert presentations. It culminates practices, and risk analysis to chief technology officers, architects, and senior members of your

  11. Microsoft Technology Centers Minneapolis

    E-Print Network [OSTI]

    Hunt, Galen

    -depth knowledge of Microsoft products and technologies ensure that you benefit from development best practices discovery, tailored product and technology drill-downs, and expert presentations. It culminates practices, and risk analysis to chief technology officers, architects, and senior members of your

  12. A DISTRIBUTION WITH GIVEN MARGINALS AND GIVEN REGRESSION CURVE

    E-Print Network [OSTI]

    Cuadras, Carles M.

    ; and the possibility of using this construction to test non­linear regression procedures and methods of estimation; mixture of distributions; non­linear regression; extremal correla­ tions. AMS(1991) subject classification this construction to the non­linear case. If ' is a monotone non­linear function, satisfying some restrictions (e

  13. Technology Innovation Program | Partnerships | ORNL

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

    Innovation Program SHARE Technology Innovation Program The Technology Innovation Program (TIP) is a 1-year program designed to accelerate selected technologies to commercial...

  14. Sandia National Laboratories: Vehicle Technologies

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

    EfficiencyVehicle Technologies Vehicle Technologies Combustion Research Facility (CRF) Vehicle Technology programs at Sandia share a common goal: reducing dependence on...

  15. Chevron, GE form Technology Alliance

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

    form Technology Alliance February 3, 2014 HOUSTON, TX, Feb. 3, 2014-Chevron Energy Technology Company and GE Oil & Gas announced today the creation of the Chevron GE Technology...

  16. Volume 118 (2013) http://dx.doi.org/10.6028/jres.118.003 Journal of Research of the National Institute of Standards and Technology

    E-Print Network [OSTI]

    Institute of Standards and Technology 29 Weathering Patterns of Ignitable Liquids with the Advanced Distillation Curve Method Thomas J. Bruno and Samuel Allen National Institute of Standards and Technology such as biodiesel fuel as potential ignitable liquids [6]. Forensic scientists and criminalists must routinely

  17. Renewable Energy Technologies | Department of Energy

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

    Technologies Renewable Energy Technologies Renewable Energy Technologies State, local, and tribal governments can harness renewable energy technologies from natural sources-...

  18. Environmental Technology Verification of Mobile Sources Control...

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

    Environmental Technology Verification of Mobile Sources Control Technologies Environmental Technology Verification of Mobile Sources Control Technologies 2005 Diesel Engine...

  19. Technology data characterizing lighting in commercial buildings: Application to end-use forecasting with commend 4.0

    SciTech Connect (OSTI)

    Sezgen, A.O.; Huang, Y.J.; Atkinson, B.A.; Eto, J.H.; Koomey, J.G.

    1994-05-01T23:59:59.000Z

    End-use forecasting models typically utilize technology tradeoff curves to represent technology options available to consumers. A tradeoff curve, in general terms, is a functional form which relates efficiency to capital cost. Each end-use is modeled by a single tradeoff curve. This type of representation is satisfactory in the analysis of many policy options. On the other hand, for policies addressing individual technology options or groups of technology options, because individual technology options are accessible to the analyst, representation in such reduced form is not satisfactory. To address this and other analysis needs, the Electric Power Research Institute (EPRI) has enhanced its Commercial End-Use Planning System (COMMEND) to allow modeling of specific lighting and space conditioning (HVAC) technology options. This report characterizes the present commercial floorstock in terms of lighting technologies and develops cost-efficiency data for these lighting technologies. This report also characterizes the interactions between the lighting and space conditioning end uses in commercial buildings in the US In general, lighting energy reductions increase the heating and decrease the cooling requirements. The net change in a building`s energy requirements, however, depends on the building characteristics, operating conditions, and the climate. Lighting/HVAC interactions data were generated through computer simulations using the DOE-2 building energy analysis program.

  20. Spectroscopic constants and potential energy curves of tungsten carbide

    SciTech Connect (OSTI)

    Balasubramanian, K. [Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604 (United States)] [Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604 (United States)

    2000-05-01T23:59:59.000Z

    Spectroscopic constants (R{sub e},{omega}{sub e},T{sub e},{mu}{sub e}) and potential energy curves for 40 low-lying electronic states of the diatomic tungsten carbide (WC) were obtained using the complete active space multiconfiguration self-consistent field followed by the multireference singles+doubles configuration interaction and full first- and second-order configuration interaction calculations that included up to 6.4 mil configurations. Spin-orbit effects were included through the enhanced relativistic configuration interaction method described here for 28 electronic states of WC lying below {approx}20 000 cm-1. The spin-orbit splitting of the ground state of WC was found to be very large (4394 cm-1). The ground and excited electronic states of the W atom were also computed and were found to be in good agreement with the experimental data. The nature of bonding was analyzed through the composition of orbitals, leading configurations, Mulliken populations, and dipole moments. The dissociation energy of WC was computed including spin-orbit and electron correlation effects. The recent photoelectron spectra of WC{sup -} were assigned on the basis of our computed results. (c) 2000 American Institute of Physics.

  1. Noncommutative Gravity and Quantum Field Theory on Noncommutative Curved Spacetimes

    E-Print Network [OSTI]

    Alexander Schenkel

    2012-10-03T23:59:59.000Z

    The focus of this PhD thesis is on applications, new developments and extensions of the noncommutative gravity theory proposed by Julius Wess and his group. In part one we propose an extension of the usual symmetry reduction procedure to noncommutative gravity. We classify in the case of abelian Drinfel'd twists all consistent deformations of spatially flat Friedmann-Robertson-Walker cosmologies and of the Schwarzschild black hole. The deformed symmetry structure allows us to obtain exact solutions of the noncommutative Einstein equations in many of our models. In part two we develop a new formalism for quantum field theory on noncommutative curved spacetimes by combining methods from the algebraic approach to quantum field theory with noncommutative differential geometry. We also study explicit examples of deformed wave operators and find that there can be noncommutative corrections even on the level of free field theories. The convergent deformation of simple toy models is investigated and it is found that these theories have an improved behaviour at short distances, i.e. in the ultraviolet. In part three we study homomorphisms between and connections on noncommutative vector bundles. We prove that all homomorphisms and connections of the deformed theory can be obtained by applying a quantization isomorphism to undeformed homomorphisms and connections. The extension of homomorphisms and connections to tensor products of bimodules is clarified. As a nontrivial application of the new mathematical formalism we extend our studies of exact noncommutative gravity solutions to more general deformations.

  2. Sustained Availability of Technetium-99m - Possible Paths Forward

    SciTech Connect (OSTI)

    Pillai, M R A [Bhabha Atomic Research Centre, Mumbai, India; Dash, A [Bhabha Atomic Research Centre, Mumbai, India; Knapp Jr, Russ F [ORNL

    2013-01-01T23:59:59.000Z

    The availability of technetium-99m (99mTc) for single-photon imaging in diagnostic nuclear medicine is crucial, and current availability is based on the molybdenum-99 (99Mo)/99mTc generator fabricated from fission-based molybdenum (F 99Mo) produced by use of highly enriched uranium (HEU) targets. The use of HEU targets is being phased out because of risks related to nuclear material proliferation, so alternative strategies for production of both 99Mo and 99mTc are being evaluated intensely. There are evidently no plans for replacement of the limited number of reactors that have primarily provided most of the 99Mo. The uninterrupted, dependable availability of 99mTc is a crucial issue. For these reasons, new options being pursued include both reactor- and accelerator-based strategies to sustain the continued availability of 99mTc without the use of HEU. In this paper the scientific and economic issues for transitioning from HEU to non-HEU are also discussed. In addition, the comparative advantages, disadvantages, technical challenges, present status, future prospects, security concerns, economic viability, and regulatory obstacles are reviewed. In addition, the international actions in progress towards evolving possible alternative strategies to produce 99Mo and/or 99mTc are analyzed. The breadth of technologies and new strategies under development to provide 99Mo and 99mTc reflects both the broad interest in and the importance of the pivotal role of 99mTc in diagnostic nuclear medicine.

  3. Periodicity search as a tool for disentangling the contaminated colour light curve of CoRoT 102781750

    E-Print Network [OSTI]

    Paparó, M; Chapellier, E; Benk?, J M; Szabó, R; Kolenberg, K; Guggenberger, E; Regály, Zs; Auvergne, M; Baglin, A; Weiss, W W

    2013-01-01T23:59:59.000Z

    The star CoRoT102781750 reveals a puzzle, showing a very complex and altering variation in different `CoRoT colours'. We established without doubt that more than a single star was situated within the CoRoT mask. Using a search for periodicity as a tool, our aim is to disentangle the composite light curve and identify the type of sources behind the variability. Both flux and magnitude light curves were used. Conversion was applied after a jump- and trend-filtering algorithm. We applied different types of period-finding techniques including MuFrAn and Period04. The amplitude and phase peculiarities obtained from the independent analysis of CoRoT r, g, and b colours and ground-based follow-up photometric observations ruled out the possibility of either a background monoperiodic or a Blazhko type RR Lyrae star being in the mask. The main target, an active star, shows at least two spotted areas that reveal a $P_rot = 8.8$ hours $(f_0 = 2.735$ c d$^{-1})$ mean rotation period. The evolution of the active regions he...

  4. INFRARED LIGHT CURVES OF MIRA VARIABLE STARS FROM COBE DIRBE DATA Beverly J. Smith

    E-Print Network [OSTI]

    Luttermoser, Donald G.

    INFRARED LIGHT CURVES OF MIRA VARIABLE STARS FROM COBE DIRBE DATA Beverly J. Smith Department have used the COBE DIRBE database to derive near- and mid-infrared light curves for a well-defined sample of 38 infrared-bright Mira variable stars and compared with optical data from the AAVSO

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

    E-Print Network [OSTI]

    Brest, Université de

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

  6. A Limit-Curve Based Soft Finger god-object Algorithm Antonio Frisoli

    E-Print Network [OSTI]

    Salisbury, Kenneth

    curve which was previously used by the robotic manipulation community to study sliding contacts-object algorithm based on the concept of limit curve, which was used in [4] to study robotic sliding manipulation on the fingerpad R External radius of the fingerpad undeformed surface p(r) Pressure distribution law over

  7. i\\ccurate and Efficient Curve Detection in Images: The Importance Sarnpling Hough Transform *

    E-Print Network [OSTI]

    Washington at Seattle, University of

    i\\ccurate and Efficient Curve Detection in Images: The Importance Sarnpling Hough TransformCleIJltlty UlllHlV'C curves in an image. \\Ve also use probabilistic to develop stopping conditions for the algorithm. The is called the Importance Sam- Hough Transform (ISHT). We apply our method to both simulated

  8. Motion of Spin 1/2 Massless Particle in a Curved Spacetime. I. Lagrangian Approach

    E-Print Network [OSTI]

    A. T. Muminov

    2008-02-18T23:59:59.000Z

    Quasi-classical picture of motion of spin 1/2 massless particle in a curved spacetime is built on base of simple Lagrangian model. The one is constructed due to analogy with Lagrangian of massive spin 1/2 particle. Equations of motion and spin propagation coincide with Papapetrou equations describing dynamic of photon in a curved spacetime.

  9. Motion of Spin 1/2 Massive Particle in a Curved Spacetime

    E-Print Network [OSTI]

    A. T. Muminov

    2007-09-28T23:59:59.000Z

    Quasi-classical picture of motion of spin 1/2 massive particle in a curved spacetime is built on base of simple Lagrangian model. The one is constructed due to analogy with Lagrangian of massive vector particle. Equations of motion and spin propagation coincide with Papapetrou equations describing dynamic of classical spinning particle in a curved spacetime.

  10. Combining hydraulic knowledge and uncertain gaugings in the estimation of hydrometric rating curves: A Bayesian approach

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Combining hydraulic knowledge and uncertain gaugings in the estimation of hydrometric rating curves HHLY, Hydrology-Hydraulics 5 rue de la Doua CS70077 69626 Villeurbanne cedex, France bCETE Ile analysis of rating curves arises from the quantitative as- sessment of (i) the hydraulic controls

  11. Abstract Title: Comprehensive assessment of peripheral arteries using multi-path curved planar

    E-Print Network [OSTI]

    reformation of CTA datasets Author Block: A. Koechl, A. Kanitsar, F. Lomoschitz, E. Groeller, D. Fleischmann - Purpose: To assess the diagnostic efficiency of multi-path curved planar reformations (mpCPR), a new image composite views (over a 180° range), which simultaneously display curved planar reformations through each

  12. Soil-Water Characteristic Curve Modeling at Low Water Content: Empirical and Semi-Empirical Approaches

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Soil-Water Characteristic Curve Modeling at Low Water Content: Empirical and Semi model, the Modified Kovacs (MK) model for the determination of soil-water characteristic curve at the low water contents of two horizons of a soil from Burkina Faso. Combining terms from capillary state

  13. No-Go Theorem for Energy-Momentum Conservation in Curved Spacetime

    E-Print Network [OSTI]

    Zhaoyan Wu

    2007-02-10T23:59:59.000Z

    It is pointed out that in curved spacetime, one cannot define the sum of energy-momemtum 4-vector over a space-like hypersurface. The difficulty in finding satisfactory gravitational energy-momentum complex stems from misunderstanding of this question. The law of conservation of energy-momentum holds valid only approximately when spacetime is not seriously curved.

  14. Seepage from a special class of a curved channel with drainage layer at shallow depth

    E-Print Network [OSTI]

    Chahar, B. R.

    . Chahar1 Received 23 February 2009; accepted 16 June 2009; published 29 September 2009. [1] In the present the general solution. Citation: Chahar, B. R. (2009), Seepage from a special class of a curved channel an inverse method, Chahar [2006] presented an exact solution for seepage from a curved channel whose boundary

  15. GUIDELINES FOR DESIGN AND SAFE HANDLING OF CURVED I-SHAPED STEEL GIRDERS

    E-Print Network [OSTI]

    Texas at Austin, University of

    0-5574-P1 GUIDELINES FOR DESIGN AND SAFE HANDLING OF CURVED I-SHAPED STEEL GIRDERS Authors: Jason FOR DESIGN AND SAFE HANDLING OF CURVED I-SHAPED STEEL GIRDERS PURPOSE: The purpose of this set of guidelines-sixth #12;2 (Eq. 6.10.2.2-2). However, TxDOT's Preferred Practices for Steel Bridge Design, Fabrication

  16. The liquid-gas phase transition and the caloric curve of nuclear matter

    E-Print Network [OSTI]

    in the critical phenomena [5-8], the caloric curve [9,10], the negative heat capacity [11,12] and the bimodalityThe liquid-gas phase transition and the caloric curve of nuclear matter K. Miyazaki E in the liquid-gas phase transition of nuclear matter. The recent great experimental progress [1-4] in nuclear

  17. Strategic Technology JET PROPULSION LABORATORY

    E-Print Network [OSTI]

    Waliser, Duane E.

    Strategic Technology Directions JET PROPULSION LABORATORY National Aeronautics and Space Administration 2 0 0 9 #12;© 2009 California Institute of Technology. Government sponsorship acknowledged. #12;Strategic Technology Directions 2009 offers a distillation of technologies, their links to space missions

  18. IIT SCHOOL OF APPLIED TECHNOLOGY

    E-Print Network [OSTI]

    Heller, Barbara

    INDUSTRIAL TECHNOLOGY AND MANAGEMENT IIT SCHOOL OF APPLIED TECHNOLOGY PREPARING SKILLED INDIVIDUALS, INDUSTRIAL FACILITIES, SUPPLY CHAIN MANAGEMENT, SUSTAINABILITY AND MANUFACTURING TECHNOLOGY. #12;BE ONE to assess, implement, and utilize current technologies, and to learn how to manage industrial operations

  19. Solar Energy Resources and Technologies

    Broader source: Energy.gov [DOE]

    Solar energy provides electricity, heating, and cooling for Federal facilities through four primary technology types. The four technologies are broken into two categories; technologies for electricity production and thermal energy technologies.

  20. Technology transfer 1994

    SciTech Connect (OSTI)

    Not Available

    1994-01-01T23:59:59.000Z

    This document, Technology Transfer 94, is intended to communicate that there are many opportunities available to US industry and academic institutions to work with DOE and its laboratories and facilities in the vital activity of improving technology transfer to meet national needs. It has seven major sections: Introduction, Technology Transfer Activities, Access to Laboratories and Facilities, Laboratories and Facilities, DOE Office, Technologies, and an Index. Technology Transfer Activities highlights DOE`s recent developments in technology transfer and describes plans for the future. Access to Laboratories and Facilities describes the many avenues for cooperative interaction between DOE laboratories or facilities and industry, academia, and other government agencies. Laboratories and Facilities profiles the DOE laboratories and facilities involved in technology transfer and presents information on their missions, programs, expertise, facilities, and equipment, along with data on whom to contact for additional information on technology transfer. DOE Offices summarizes the major research and development programs within DOE. It also contains information on how to access DOE scientific and technical information. Technologies provides descriptions of some of the new technologies developed at DOE laboratories and facilities.

  1. The Sandia National Laboratories technology transfer program for physical protection technologies

    SciTech Connect (OSTI)

    Green, M.; Miyoshi, D.; Dry, B.

    1990-01-01T23:59:59.000Z

    As the Lead Laboratory for the Department of Energy in the field of physical security, Sandia National Laboratories has had the opportunity to collect extensive amounts of information on the technologies of physical security. Over the past 15 years, the volume of this knowledge has become so extensive that Sandia is now taking steps to make this information as available as possible to the DOE community and, where possible, other government agencies and NRC licensees. Through these technology transfer efforts, there are also programs available that allow cooperative research agreements between Sandia and the private sector as well. Six different technology transfer resources are being developed and used by the Safeguards Engineering Department: (1) tech transfer manuals; (2) SAND documents; (3) safeguards libraries; (4) training courses conferences; (5) technical assistance tours; and (6) cooperative research developments agreements (CRADAs).

  2. A possible solution for the non-existence of time

    E-Print Network [OSTI]

    Hitoshi Kitada

    1999-11-17T23:59:59.000Z

    A possible solution for the problem of non-existence of universal time is given by utilizing Goedel's incompleteness theorem.

  3. A CONTAGIOUS DISEASE OF SALMON POSSIBLY OF VIRUS ORIGIN

    E-Print Network [OSTI]

    A CONTAGIOUS DISEASE OF SALMON POSSIBLY OF VIRUS ORIGIN BY R. R. RUCKER, W. J. WHIPPLE, J. R A CONTAGIOUS DISEASE OF SALMON POSSIBLY OF VIRUS ORIGIN By R. R. Rucker, W. J. Whipple, J. R. Parvin and C. A #12;A CONTAGIOUS DISEASE OF SALMON, POSSIBLY OF VIRUS ORIGIN By R. R. Rucker,! Fishery Research

  4. Possible global warming futures Minh Ha-Duong

    E-Print Network [OSTI]

    Possible global warming futures Minh Ha-Duong Minh.Ha.Duong@cmu.edu CNRS, France HDGC, Carnegie Mellon Possible global warming futures ­ p.1/36 #12;SRES: Forecasts or scenarios? +5.5 C in 2100 the controversy using imprecise probabilities, a more general information theory. . . Possible global warming

  5. Geothermal innovative technologies catalog

    SciTech Connect (OSTI)

    Kenkeremath, D. (ed.)

    1988-09-01T23:59:59.000Z

    The technology items in this report were selected on the basis of technological readiness and applicability to current technology transfer thrusts. The items include technologies that are considered to be within 2 to 3 years of being transferred. While the catalog does not profess to be entirely complete, it does represent an initial attempt at archiving innovative geothermal technologies with ample room for additions as they occur. The catalog itself is divided into five major functional areas: Exploration; Drilling, Well Completion, and Reservoir Production; Materials and Brine Chemistry; Direct Use; and Economics. Within these major divisions are sub-categories identifying specific types of technological advances: Hardware; Software; Data Base; Process/Procedure; Test Facility; and Handbook.

  6. Digital Sensor Technology

    SciTech Connect (OSTI)

    Ted Quinn; Jerry Mauck; Richard Bockhorst; Ken Thomas

    2013-07-01T23:59:59.000Z

    The nuclear industry has been slow to incorporate digital sensor technology into nuclear plant designs due to concerns with digital qualification issues. However, the benefits of digital sensor technology for nuclear plant instrumentation are substantial in terms of accuracy, reliability, availability, and maintainability. This report demonstrates these benefits in direct comparisons of digital and analog sensor applications. It also addresses the qualification issues that must be addressed in the application of digital sensor technology.

  7. Technology Innovation Program 2010ANNUAL REPORT

    E-Print Network [OSTI]

    Technology Innovation Program 2010ANNUAL REPORT 2010ANNUAL REPORT Technology Innovation ProgramTechnology Innovation ProgramTechnology Innovation ProgramTechnology Innovation ProgramTechnology Innovation ProgramTechnology Innovation ProgramTechnology Innovation ProgramTechnology Innovation ProgramTechnology Innovation ProgramTechnology

  8. Additive Manufacturing Technology Assessment

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

    market by industrial companies, 58 including the Electro Optical Systems (EOS) in Germany, Arcam in Sweden, MCP Tooling Technologies in 59 the UK, and Stratasys, 3D Systems,...

  9. States & Emerging Energy Technologies

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

    States & Emerging Energy Technologies August 15, 2013 DOE's State and Local Technical Assistance Program 2 DOE's Technical Assistance Program * Strategic Energy Planning * Program...

  10. 2015 Technology Innovation Projects

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

    for RTU and Lighting Retrofits Energy Efficiency TIP 140: Energy Efficiency Emerging Technology Assessment and Demonstration Projects TIP 261: Determining and Improving the...

  11. Geothermal Resources and Technologies

    Broader source: Energy.gov [DOE]

    This page provides a brief overview of geothermal energy resources and technologies supplemented by specific information to apply geothermal systems within the Federal sector.

  12. Lighting Technology Panel

    Broader source: Energy.gov [DOE]

    Presentation covers the Lighting Technology Panel for the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009. 

  13. Climate Vision: Technology Pathways

    Office of Scientific and Technical Information (OSTI)

    Cement Chemical Manufacturing Electric Power Forest Products Iron and Steel Mining Oil and Gas Technology Pathways The DOE's Industries of the Future process helps...

  14. Technology Integration Overview

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

    -Technology Integration Overview - Dennis A. Smith Connie Bezanson U. S. Department of Energy Headquarters Office - Washington, D.C. May 2013 Project ID: TI000 2013 Department of...

  15. Flexible Assembly Solar Technology

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

    Energy, Inc. All rights reserved. 3 About BrightSource Energy We develop and build solar thermal projects using our own central tower technology Headquartered in...

  16. Science, Technology & Engineering

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

    to lead LANL Science, Technology & Engineering directorate August 17, 2012 LOS ALAMOS, NEW MEXICO, August 17, 2012-Los Alamos National Laboratory Director Charles McMillan...

  17. Genome Science/Technologies

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

    McDonald Bioscience Communications Email State-of-the art technology and extensive genomics expertise Protein research Read caption + Los Alamos National Laboratory graduate...

  18. Solar Energy Technologies Office

    Broader source: Energy.gov [DOE]

    In 2011, the Energy Department's Solar Energy Technologies Office (SETO) became the SunShot Initiative, a collaborative national effort that aggressively drives innovation to make solar energy...

  19. Director, Geothermal Technologies Office

    Broader source: Energy.gov [DOE]

    The mission of the Geothermal Technologies Office (GTO) is to accelerate the development and deployment of clean, domestic geothermal resources that will promote a stronger, more productive economy...

  20. Flexible Assembly Solar Technology

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

    field and secured on steel pylons. PROJECT DESCRIPTION The research team is applying automation processes to the design of a Flexible Assembly Solar Technology (FAST). FAST is an...

  1. Carbon Fiber Technology Facility

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

    conventional and alternative precursors to carbon fiber Advance high-volume composite design and manufacturing capabilities Transition technology to industry partners...

  2. Upgrading through Preprocessing Technologies

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

    Upgrading through Preprocessing Technologies The challenges of efficiently converting raw biomass into usable, affordable, customized bioenergy feedstdocks are many. The bioenergy...

  3. Arc Position Sensing Technology

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

    arc remelting (VAR) furnaces for industries that use specialty metals such as nickel, titanium, and zirconium. The technology could be used to help produce materials with stronger...

  4. Mobile Technology Management

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

    2013-11-21T23:59:59.000Z

    The directive will ensure that federal organizations and employees within the Department can use mobile technology to support mission requirements in a safe and secure manner.

  5. Advanced Propulsion Technology Strategy

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

    Alternative Sources) Hydrogen Time ADVANCED PROPULSION TECHNOLOGY STRATEGY DOWNSIZED TURBO GAS ENGINE CHEVROLET CRUZE 1.4L TURBO ECOTEC Downsized SIDI Turbo Boosting HCCI -...

  6. Technology Demonstration Partnership Policy

    Broader source: Energy.gov [DOE]

    This City Council memorandum establishes a framework for engaging in and evaluating demonstration partnerships with the goal of developing, testing, and demonstrating emerging technologies, product, and service innovations.

  7. Navy Technology Evaluation Update

    Broader source: Energy.gov [DOE]

    Presentation covers the Navy Technology Evaluation update at the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009.

  8. HVAC Maintenance and Technologies

    Broader source: Energy.gov [DOE]

    Presentation covers the HVAC maintenance and technologies, and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

  9. Photovoltaic Resources and Technologies

    Broader source: Energy.gov [DOE]

    This page provides a brief overview of photovoltaic (PV) technologies supplemented by specific information to apply PV within the Federal sector.

  10. ENERGY EFFICIENCY TECHNOLOGY ROADMAP

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

    to involve more explicit alignment with BPA's newest demand-side roadmap resource, the Demand Response Technology Roadmap. 1 Roadmap chapters have been arranged in stand-alone...

  11. Battery packaging - Technology review

    SciTech Connect (OSTI)

    Maiser, Eric [The German Engineering Federation (VDMA), Battery Production Industry Group, Lyoner Str. 18, 60528 Frankfurt am Main (Germany)

    2014-06-16T23:59:59.000Z

    This paper gives a brief overview of battery packaging concepts, their specific advantages and drawbacks, as well as the importance of packaging for performance and cost. Production processes, scaling and automation are discussed in detail to reveal opportunities for cost reduction. Module standardization as an additional path to drive down cost is introduced. A comparison to electronics and photovoltaics production shows 'lessons learned' in those related industries and how they can accelerate learning curves in battery production.

  12. Training & Technology Solutions Queens College ~ Office of Converging Technologies ~ Training & Technology Solutions

    E-Print Network [OSTI]

    Johnson Jr.,, Ray

    Training & Technology Solutions Queens College ~ Office of Converging Technologies ~ Training & Technology Solutions 718-997-4875 ~ training@qc.cuny.edu ~ I-Bldg 214 CUNYfirst Faculty Center Navigation;Training & Technology Solutions Queens College ~ Office of Converging Technologies ~ Training & Technology

  13. 'Self-absorbed' GeV light curves of gamma-ray burst afterglows

    SciTech Connect (OSTI)

    Panaitescu, A.; Vestrand, W. T.; Wo?niak, P. [Space and Remote Sensing, MS B244, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2014-06-10T23:59:59.000Z

    We investigate the effect that the absorption of high-energy (above 100 MeV) photons produced in gamma-ray burst afterglow shocks has on the light curves and spectra of Fermi Large Area Telescope (LAT) afterglows. Afterglows produced by the interaction of a relativistic outflow with a wind-like medium peak when the blast wave deceleration sets in, and the afterglow spectrum could be hardening before that peak, as the optical thickness to pair formation is decreasing. In contrast, in afterglows produced in the interaction with a homogeneous medium, the optical thickness to pair formation should increase and yield a light curve peak when it reaches unity, followed by a fast light curve decay, accompanied by spectral softening. If energy is injected in the blast wave, then the accelerated increase of the optical thickness yields a convex afterglow light curve. Other features, such as a double-peak light curve or a broad hump, can arise from the evolution of the optical thickness to photon-photon absorption. Fast decays and convex light curves are seen in a few LAT afterglows, but the expected spectral softening is rarely seen in (and difficult to measure with) LAT observations. Furthermore, for the effects of photon-photon attenuation to shape the high-energy afterglow light curve without attenuating it too much, the ejecta initial Lorentz factor must be in a relatively narrow range (50-200), which reduces the chance of observing those effects.

  14. ANALYTICAL LIGHT CURVE MODELS OF SUPERLUMINOUS SUPERNOVAE: {chi}{sup 2}-MINIMIZATION OF PARAMETER FITS

    SciTech Connect (OSTI)

    Chatzopoulos, E.; Wheeler, J. Craig; Vinko, J. [Department of Astronomy, University of Texas at Austin, Austin, TX (United States); Horvath, Z. L.; Nagy, A., E-mail: manolis@astro.as.utexas.edu [Department of Optics and Quantum Electronics, University of Szeged (Hungary)

    2013-08-10T23:59:59.000Z

    We present fits of generalized semi-analytic supernova (SN) light curve (LC) models for a variety of power inputs including {sup 56}Ni and {sup 56}Co radioactive decay, magnetar spin-down, and forward and reverse shock heating due to supernova ejecta-circumstellar matter (CSM) interaction. We apply our models to the observed LCs of the H-rich superluminous supernovae (SLSN-II) SN 2006gy, SN 2006tf, SN 2008am, SN 2008es, CSS100217, the H-poor SLSN-I SN 2005ap, SCP06F6, SN 2007bi, SN 2010gx, and SN 2010kd, as well as to the interacting SN 2008iy and PTF 09uj. Our goal is to determine the dominant mechanism that powers the LCs of these extraordinary events and the physical conditions involved in each case. We also present a comparison of our semi-analytical results with recent results from numerical radiation hydrodynamics calculations in the particular case of SN 2006gy in order to explore the strengths and weaknesses of our models. We find that CS shock heating produced by ejecta-CSM interaction provides a better fit to the LCs of most of the events we examine. We discuss the possibility that collision of supernova ejecta with hydrogen-deficient CSM accounts for some of the hydrogen-deficient SLSNe (SLSN-I) and may be a plausible explanation for the explosion mechanism of SN 2007bi, the pair-instability supernova candidate. We characterize and discuss issues of parameter degeneracy.

  15. Digital Actuator Technology

    SciTech Connect (OSTI)

    Ken Thomas; Ted Quinn; Jerry Mauck; Richard Bockhorst

    2014-09-01T23:59:59.000Z

    There are significant developments underway in new types of actuators for power plant active components. Many of these make use of digital technology to provide a wide array of benefits in performance of the actuators and in reduced burden to maintain them. These new product offerings have gained considerable acceptance in use in process plants. In addition, they have been used in conventional power generation very successfully. This technology has been proven to deliver the benefits promised and substantiate the claims of improved performance. The nuclear industry has been reluctant to incorporate digital actuator technology into nuclear plant designs due to concerns due to a number of concerns. These could be summarized as cost, regulatory uncertainty, and a certain comfort factor with legacy analog technology. The replacement opportunity for these types of components represents a decision point for whether to invest in more modern technology that would provide superior operational and maintenance benefits. Yet, the application of digital technology has been problematic for the nuclear industry, due to qualification and regulatory issues. With some notable exceptions, the result has been a continuing reluctance to undertake the risks and uncertainties of implementing digital actuator technology when replacement opportunities present themselves. Rather, utilities would typically prefer to accept the performance limitations of the legacy analog actuator technologies to avoid impacts to project costs and schedules. The purpose of this report is to demonstrate that the benefits of digital actuator technology can be significant in terms of plant performance and that it is worthwhile to address the barriers currently holding back the widespread development and use of this technology. It addresses two important objectives in pursuit of the beneficial use of digital actuator technology for nuclear power plants: 1. To demonstrate the benefits of digital actuator technology over legacy analog sensor technology in both quantitative and qualitative ways. 2. To recognize and address the added difficulty of digital technology qualification, especially in regard to software common cause failure (SCCF), that is introduced by the use of digital actuator technology.

  16. Technology Catalogue. First edition

    SciTech Connect (OSTI)

    Not Available

    1994-02-01T23:59:59.000Z

    The Department of Energy`s Office of Environmental Restoration and Waste Management (EM) is responsible for remediating its contaminated sites and managing its waste inventory in a safe and efficient manner. EM`s Office of Technology Development (OTD) supports applied research and demonstration efforts to develop and transfer innovative, cost-effective technologies to its site clean-up and waste management programs within EM`s Office of Environmental Restoration and Office of Waste Management. The purpose of the Technology Catalogue is to provide performance data on OTD-developed technologies to scientists and engineers assessing and recommending technical solutions within the Department`s clean-up and waste management programs, as well as to industry, other federal and state agencies, and the academic community. OTD`s applied research and demonstration activities are conducted in programs referred to as Integrated Demonstrations (IDs) and Integrated Programs (IPs). The IDs test and evaluate.systems, consisting of coupled technologies, at specific sites to address generic problems, such as the sensing, treatment, and disposal of buried waste containers. The IPs support applied research activities in specific applications areas, such as in situ remediation, efficient separations processes, and site characterization. The Technology Catalogue is a means for communicating the status. of the development of these innovative technologies. The FY93 Technology Catalogue features technologies successfully demonstrated in the field through IDs and sufficiently mature to be used in the near-term. Technologies from the following IDs are featured in the FY93 Technology Catalogue: Buried Waste ID (Idaho National Engineering Laboratory, Idaho); Mixed Waste Landfill ID (Sandia National Laboratories, New Mexico); Underground Storage Tank ID (Hanford, Washington); Volatile organic compound (VOC) Arid ID (Richland, Washington); and VOC Non-Arid ID (Savannah River Site, South Carolina).

  17. College of Information Technology 151 INFORMATION TECHNOLOGY

    E-Print Network [OSTI]

    Xie,Jiang (Linda)

    the computer industry either as a computer hardware design engineer or as a computer scientist with a heavy, industry professionals, and students. The College of IT was formed in 2000, with the mission of educating industry to develop information technology solutions. Computer Science Program. The Computer Science

  18. PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program

    E-Print Network [OSTI]

    California at Berkeley, University of

    the road." In recent years, increasing amounts of crumb rubber from recycled tires have been added solve the very serious problem of waste tire disposal. TECHNOLOGY TRANSFER PROGRAM SEPTEMBER 2009, VOL. 1, NO. 2 § Rubber Roads: Waste Tires Find a Home By Larry Santucci, PE Pavement Specialist

  19. Testing Technology: A Sandia technology bulletin

    SciTech Connect (OSTI)

    Goetsch, B.; Floyd, H.L.; Doran, L. [eds.

    1994-08-01T23:59:59.000Z

    Inside this issue is a farewell to Testing Technology message from technical advisor, Ruth David. Also included are articles on: Testing the I-40 bridge over the Rio Grande, simulated reactor meltdown studies, an inexpensive monitor for testing integrated circuits, testing of antihelicoptor mines, and quality assurance on aircraft inspection.

  20. Solid-state lighting technology perspective.

    SciTech Connect (OSTI)

    Tsao, Jeffrey Yeenien; Coltrin, Michael Elliott

    2006-08-01T23:59:59.000Z

    Solid-State Lighting (SSL) uses inorganic light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs) to convert electricity into light for illumination. SSL has the potential for enormous energy savings and accompanying environmental benefits if its promise of 50% (or greater) energy efficiencies can be achieved. This report provides a broad summary of the technologies that underlie SSL. The applications for SSL and potential impact on U.S. and world-wide energy consumption, and impact on the human visual experience are discussed. The properties of visible light and different technical metrics to characterize its properties are summarized. The many factors contributing to the capital and operating costs for SSL and traditional lighting sources (incandescent, fluorescent, and high-intensity discharge lamps) are discussed, with extrapolations for future SSL goals. The technologies underlying LEDs and OLEDs are also described, including current and possible alternative future technologies and some of the present limitations.