Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies
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
Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies
Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.
2007-01-01T23:59:59.000Z
Selective Catalytic Reduction (SCR) NOx Control; Prepared byNOx Removal Technologies. Volume 1. Selective Catalytic Reduction.
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R
2007-01-01T23:59:59.000Z
2004) ‘Experience curves for power plant emission controlLtd. Experience curves for power plant emission controlInc. Experience curves for power plant emission control
The Possibility of Curved Spacetime, Black Holes, and Big Bang is Less than One Billionth
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.
Experience curves for power plant emission control technologies
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
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A
2007-01-01T23:59:59.000Z
Selective Catalytic Reduction (SCR) NOx Control, Prepared byReduction (SCR) Technology for the Control of Nitrogen Oxide (NOx)NOx removal technologies. Volume 1. Selective catalytic reduction.
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
Learning Curves For Energy Technology: A Critical Assessment
Jamasb, Tooraj; Kohler, Jonathan
hydro 0.48% 2.8% 8 Waste to electricity 41.5% 57.9% 9 Nuclear light water reactor 37.6% 53.2% 10 Wind - onshore 13.1% 15.7% 11 Solar thermal power 2.2% 22.5% 12 Wind – offshore 1.0% 8.3% Table 1: Learning by doing rates using single-factor curves... Farms, Energy Policy, Vol. 33, 133-150. Klassen, G., Miketa, A., Larsen, K., and Sundqvist, T. (2002). The Impact of R&D on Innovation for Wind Energy in Denmark, Germany, and the United Kingdom, paper presented at the International Energy Workshop...
DETERMINATION OF THE SWELL-STRESS CURVE OF AN EXPANSIVE SOIL USING CENTRIFUGE TECHNOLOGY
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
Business Growth with Energy Reduction Made Possible Through Technology
Osifchin, N.
1983-01-01T23:59:59.000Z
. Most of the savings to date have been made by improving buildings operations; however, substantial and growing savings have accrued from the introduction of energy-lean technologies in new network electronic systems. The energy consumption of power...
Technology Makes Solid State Multi-Gas Emission Monitoring Possible
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...
Technology Makes Solid State Multi-Gas Emission Monitoring Possible
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...
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...
, 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
Heinrich, Katie
2013-01-01T23:59:59.000Z
Story by Katie Heinrich 16 tx H2O Summer 2013 Making wastewater environmentally sustainable Innovative technology o#30;ers new possibilities for wastewater treatment Municipal wastewater treatment plants may soon become more sustainable... 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...
A cost modeling approach using learning curves to study the evolution of technology
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 ...
Accounting for Technological Change in Regulatory Impact Analyses: The Learning Curve Technique
Taylor, Margaret
2014-01-01T23:59:59.000Z
N ATIONAL L ABORATORY Accounting for Technological Change inopportunity employer. Accounting for Technological Change inbest available techniques” for accounting for innovation in
Heinrich, Katie
2013-01-01T23:59:59.000Z
stream_source_info Making wastewater environmentally sustainable.pdf.txt stream_content_type text/plain stream_size 7339 Content-Encoding windows-1252 stream_name Making wastewater environmentally sustainable.pdf.txt Content...-Type text/plain; charset=windows-1252 Story by Katie Heinrich 16 tx H2O Summer 2013 Making wastewater environmentally sustainable Innovative technology o?ers new possibilities for wastewater treatment Municipal wastewater treatment plants may...
Confidential and Proprietary 2013 Vecna Technologies, Inc. The Safety-to-Autonomy Curve
with applications in healthcare and logistics · Hundreds of implementations worldwide · Strong track record © 2013 Vecna Technologies, Inc. Vecna's Mission To create robots that provide real economic value technologies Advanced robotics across health care, manufacturing, and services could generate a potential
Im, Myungshin; Yoon, Sung-Chul; Kim, Jae-Woo; Ehgamberdiev, Shuhrat A; Monard, Libert A G; Sung, Hyun-Il
2015-01-01T23:59:59.000Z
The main progenitor candidate of Type Ia supernovae (SNe Ia) is white dwarfs in binary systems where the companion star is another white dwarf (double degenerate system) or a less evolved non-degenerate star with R* >~ 0.1 Rsun (single degenerate system), but no direct observational evidence exists that tells which progenitor system is more common. Recent studies suggest that the light curve of a supernova shortly after its explosion can be used to set a limit on the progenitor size, R*. Here, we report a high cadence monitoring observation of SN 2015F, a normal SN Ia, in the galaxy NGC 2442 starting about 84 days before the first light time. With our daily cadence data, we catch the emergence of the radioactively powered light curve, but more importantly detect with a > 97.4% confidence a possible dim precursor emission that appears at roughly 1.5 days before the rise of the radioactively powered emission. The signal is consistent with theoretical expectations for a progenitor system involving a companion st...
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.
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
Learning curves and engineering assessment of emerging energy technologies: onshore wind
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 ...
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
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.
An Analysis of Energy Savings Possible Through Advances in Automotive Tooling Technology
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.
Albert Schwarz
2014-08-16T23:59:59.000Z
One says that a pair (P,Q) of ordinary differential operators specify a quantum curve if [P,Q]=const. If a pair of difference operators (K,L) obey the relation KL=const LK we say that they specify a discrete quantum curve. This terminology is prompted by well known results about commuting differential and difference operators, relating pairs of such operators with pairs of meromorphic functions on algebraic curves obeying some conditions. The goal of this paper is to study the moduli spaces of quantum curves. We will show how to quantize a pair of commuting differential or difference operators (i.e. to construct the corresponding quantum curve or discrete quantum curve). The KP-hierarchy acts on the moduli space of quantum curves; we prove that similarly the discrete KP-hierarchy acts on the moduli space of discrete quantum curves.
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.
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.
Generation of Closed Timelike Curves with Rotating Superconductors
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.
Demazière, Christophe
167Int. J. Nuclear Energy Science and Technology, Vol. 2, No. 3, 2006 Analysis methods. Nuclear Energy Science and Technology, Vol. 2, No. 3, pp.167188. Biographical notes: Christophe Demazière Chalmers University of Technology SE-412 96 Göteborg, Sweden Fax: +4631772 3079 E-mail: demaz
Curved Space or Curved Vacuum?
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.
Every curve is a Teichmuller curve
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.
Bahk, Saewoong
I Technology Trend of Ubiquitous Computing Infrastructure This article aims to estimate the level experience of UCN project. Keywords: Ubiquitous computing Infra, Ubiquitous Intelligence, Ubiquitous Network to prepare for realization of ubiquitous society and examining the present trend. For this purpose, we
L. Stodolsky
2005-11-28T23:59:59.000Z
The study of the number of photons leads to a new way of characterizing curves and to a novel integral invariant over curves.
Examining CCS deployment potential in China via application of an integrated CCS cost curve
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.
Quantization of classical curves
Xiaojun Liu; Albert Schwarz
2014-08-18T23:59:59.000Z
We discuss the relation between quantum curves (defined as solutions of equation $[P,Q]=\\hbar$, where $P,Q$ are ordinary differential operators) and classical curves. We illustrate this relation for the case of quantum curve that corresponds to the $(p,q)$-minimal model coupled to 2D gravity.
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
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.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
focuses on multi-scale, multiphysics approaches to understanding natural systems, "engineering the earth" with sensing and drilling technologies and characterizing geomaterials...
Pairings on hyperelliptic curves
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.
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article) |govInstrumentsmfrirtA Journey Inside theFacebookTechnicalBio-Inspiredtechnologies Tag:TassiloUsResearchTechnology
Thermal aspects in curved metrics
Giovanni Acquaviva
2013-01-15T23:59:59.000Z
In this paper we describe two approaches that allow to calculate some thermal features as perceived by different observers in curved spacetimes: the tunnelling method and the Unruh-DeWitt detector. The tunnelling phenomenon is a semi-classical approach to the issue of Hawking radiation and allows a straightforward calculation of the horizon temperature in a plethora of scenarios; the Unruh-DeWitt model relies instead on a quantum field-theoretical approach and (whenever possible) gives a more exact answer in terms of transition rates between energy levels of an idealized detector.
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 ...
Status for Learning Curves indlg ved BES temadag om
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
Constructing Pairing-Friendly Elliptic Curves with Embedding Degree 10.
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
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.
Connecting curves for dynamical systems
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.
Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies
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
Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies
Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.
2007-01-01T23:59:59.000Z
Pollution Control Costs for Coal-Fired Power Stations; IEAControl Options for Coal-Fired Electric Utility Boilers; J.for NO x Control on Coal-Fired Boilers; U.S. Environmen- tal
Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies
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. “
Twisted Ate Pairing on Hyperelliptic Curves and Applications
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
Twisted Ate Pairing on Hyperelliptic Curves and Applications
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
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...
Sergey A. Cherkis
2007-03-11T23:59:59.000Z
A typical solution of an integrable system is described in terms of a holomorphic curve and a line bundle over it. The curve provides the action variables while the time evolution is a linear flow on the curve's Jacobian. Even though the system of Nahm equations is closely related to the Hitchin system, the curves appearing in these two cases have very different nature. The former can be described in terms of some classical scattering problem while the latter provides a solution to some Seiberg-Witten gauge theory. This note identifies the setup in which one can formulate the question of relating the two curves.
Tyre curve estimation in slip-controlled braking
Miller, Jonathan I.; Cebon, David
2015-06-09T23:59:59.000Z
al.8, 9 that actuation delays in heavy vehicles could be reduced by an order of magnitude (from over 40 ms to under 4 ms) by placing fast pneumatic valves featuring “binary-actuation” technology directly on brake chambers, instead of conventional... estimated with a sliding mode observer by Cadiou et al.23 The estimator produced plausible force time histories, but the results showed significant scatter when plotted on slip-friction curves. Tyre curve identification Knowledge of the road friction...
Quantum curves and topological recursion
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.
New National Wind Potential Estimates for Modern and Near-Future Turbine Technologies (Poster)
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.
Ultimacy and alternative possibilities
Fischer, John Martin
2009-01-01T23:59:59.000Z
considerations about alternative possibilities and those9370-1 Ultimacy and alternative possibilities John Martinwe should separate issues of alternative possibilities from
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
Fourier duality of quantum curves
Martin Luu; Albert Schwarz
2015-04-07T23:59:59.000Z
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.
Fourier duality of quantum curves
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.
Random Curves by Conformal Welding
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 $\\kappa<4$.
Random Curves by Conformal Welding
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 $\\kappa<4$.
Parabolic curves in Lie groups
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.
OPTICAL PHASE CURVES OF KEPLER EXOPLANETS
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.
Incorporating Experience Curves in Appliance Standards Analysis
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. ,
Algebraic quantum field theory in curved spacetimes
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".
Possibilities for Healthcare Computing
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, ...
Role of design complexity in technology improvement James McNerneya,b
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
Harmonic algebraic curves and noncrossing partitions
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...
Analysis and Design of Power Acceptability Curves
Analysis and Design of Power Acceptability Curves for Industrial Loads Masters Thesis and Final Analysis and Design of Power Acceptability Curves for Industrial Loads Thesis and Final Report John Kyei
18.783 Elliptic Curves, Spring 2013
Sutherland, Andrew
This graduate-level course is a computationally focused introduction to elliptic curves, with applications to number theory and cryptography.
Multipath Curved Planar Reformation of the Peripheral
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
Explicit Coleman integration for hyperelliptic curves
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.
Gravitational-wave sensitivity curves
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...
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R
2007-01-01T23:59:59.000Z
emissions from coal-fired power plants have been the subjectrequired on all new coal-fired power plants in the US andof FGD at coal-burning power plants can be traced back to
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A
2007-01-01T23:59:59.000Z
a standardised coal-fired power plant (500 MWe, 3.5% sulphura standardised coal-fired power plant (500 MWe, 3.5% sulphurfor a standard coal-fired power plant (500 MWe, Another
Experience curves for power plant emission control technologies
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
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R
2007-01-01T23:59:59.000Z
oxides (NO x ) from coal-fired electric power plants. InFGD Installations on Coal-Fired Plants, IEA Coal Research,control modeling of coal-fired power systems’, Journal of
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A
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
SUPERNOVA LIGHT CURVES POWERED BY FALLBACK ACCRETION
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.
Does the Environmental Kuznets Curve Describe How Individual Countries Behave?
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
Is the environmental Kuznets curve an empirical regularity?
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
Aerodynamics of a rigid curved kite wing
Maneia, Gianmauro; Tordella, Daniela; Iovieno, Michele
2013-01-01T23:59:59.000Z
A preliminary numerical study on the aerodynamics of a kite wing for high altitude wind power generators is proposed. Tethered kites are a key element of an innovative wind energy technology, which aims to capture energy from the wind at higher altitudes than conventional wind towers. We present the results obtained from three-dimensional finite volume numerical simulations of the steady air flow past a three-dimensional curved rectangular kite wing (aspect ratio equal to 3.2, Reynolds number equal to 3x10^6). Two angles of incidence -- a standard incidence for the flight of a tethered airfoil (6{\\deg}) and an incidence close to the stall (18{\\deg}) -- were considered. The simulations were performed by solving the Reynolds Averaged Navier-Stokes flow model using the industrial STAR-CCM+ code. The overall aerodynamic characteristics of the kite wing were determined and compared to the aerodynamic characteristics of the flat rectangular non twisted wing with an identical aspect ratio and section (Clark Y profil...
ENGINEERING TECHNOLOGY Engineering Technology
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
UV Light Curves of Thermonuclear Supernovae
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.
Canonical correlation of shipping forward curves
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 ...
Twisted Jacobi Intersections Curves Rongquan Feng1
International Association for Cryptologic Research (IACR)
Twisted Jacobi Intersections Curves Rongquan Feng1 , Menglong Nie1 , Hongfeng Wu2 1LMAM, School, whfmath@gmail.com Abstract In this paper, the twisted Jacobi intersections which contains Ja- cobi points of order 2 is iso- morphic to a twisted Jacobi intersections curve. Some fast explicit for- mulae
Projection-based curve clustering Benjamin AUDER
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
Technology Assessment TECHNOLOGY ASSESSMENT
Rock, Chris
Technology Assessment 10/14/2004 1 TECHNOLOGY ASSESSMENT STRATEGIC PLAN MISSION STATEMENT Support the Mission of Texas Tech University and the TTU Information Technology Division by providing timely and relevant information and assistance in current and emerging technologies and their practical applications
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.
Biltoft, P J
2004-10-15T23:59:59.000Z
The environmental condition called vacuum is created any time the pressure of a gas is reduced compared to atmospheric pressure. On earth we typically create a vacuum by connecting a pump capable of moving gas to a relatively leak free vessel. Through operation of the gas pump the number of gas molecules per unit volume is decreased within the vessel. As soon as one creates a vacuum natural forces (in this case entropy) work to restore equilibrium pressure; the practical effect of this is that gas molecules attempt to enter the evacuated space by any means possible. It is useful to think of vacuum in terms of a gas at a pressure below atmospheric pressure. In even the best vacuum vessels ever created there are approximately 3,500,000 molecules of gas per cubic meter of volume remaining inside the vessel. The lowest pressure environment known is in interstellar space where there are approximately four molecules of gas per cubic meter. Researchers are currently developing vacuum technology components (pumps, gauges, valves, etc.) using micro electro mechanical systems (MEMS) technology. Miniature vacuum components and systems will open the possibility for significant savings in energy cost and will open the doors to advances in electronics, manufacturing and semiconductor fabrication. In conclusion, an understanding of the basic principles of vacuum technology as presented in this summary is essential for the successful execution of all projects that involve vacuum technology. Using the principles described above, a practitioner of vacuum technology can design a vacuum system that will achieve the project requirements.
Decline curve analysis for horizontal wells
Shih, Min-Yu
1994-01-01T23:59:59.000Z
Subject; Petroleum Engineering DECLINE CURVE ANALYSIS FOR HORIZONTAL WELLS A Thesis by MIN- YU SHIH Submitted to Texas A8tM University in partial fulfillment of the requirements for the degtee of MASTER OF SCIENCE Approved as to style and content... curves are given as log-log plots of MttdaLLattaad: Fetkovich Type Curve Radial Flow, Circular Reservoir Solutions 12 Transient "Stems" tTransient Flow) 8 001 160 000 x10 Depletion "Stems" (Boundary-Dominated Flow) r)04Arps Equations b 0 0...
Incorporating Experience Curves in Appliance Standards Analysis
Desroches, Louis-Benoit
2012-01-01T23:59:59.000Z
appliance price trends. Energy Policy 37, 597-605. Day, G.learning hypothesis. Energy Policy 37, 2525-2535. Fusfeld,curves for wind farms. Energy Policy 33, 133-150. Klaassen,
Bioscience Technology Bioscience Technology
Vertes, Akos
Bioscience Technology Bioscience Technology Advantage Business Media 100 Enterprise Drive Rockaway, co-director of George Washington University's Institute for Proteomics Technology and Applications are thawed and fixed, then covered with a tissue crust and scanned, in the vacuum environment of the mass
Wavelet Analysis of Galactic Rotation Curves
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.
Data Security in Cloud Architecture Based on Diffie Hellman and Elliptical Curve Cryptography
International Association for Cryptologic Research (IACR)
Data Security in Cloud Architecture Based on Diffie Hellman and Elliptical Curve Cryptography Neha towards cloud architecture. Cloud computing is technology where the users' can use high end services a design for cloud architecture which ensures secured movement of data at client and server end. We have
Curved carbon nanotubes: From unique geometries to novel properties and peculiar applications
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
Environmental bias and elastic curves on surfaces
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.
Business Growth with Energy Reduction Made Possible Through Technology
Osifchin, N.
1983-01-01T23:59:59.000Z
For nine consecutive years since 1973, the Bell System has met its objective of zero energy growth. During this period the volume of business has grown by 97 percent and the cumulative savings in energy are equivalent to 45 million barrels of oil...
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...
Freedom from Pollution? The State, the People, and the Environmental Kuznets Curve
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
Updated U.S. Geothermal Supply Curve
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.
The marine biodiversity curve is an icon of paleobiology. The familiar curve shows
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
Pandharipande, R
2011-01-01T23:59:59.000Z
In the past 20 years, compactifications of the families of curves in algebraic varieties X have been studied via stable maps, Hilbert schemes, stable pairs, unramified maps, and stable quotients. Each path leads to a different enumeration of curves. A common thread is the use of a 2-term deformation/obstruction theory to define a virtual fundamental class. The richest geometry occurs when X is a nonsingular projective variety of dimension 3. We survey here the 13/2 principal ways to count curves with special attention to the 3-fold case. The different theories are linked by a web of conjectural relationships which we highlight. Our goal is to provide a guide for graduate students looking for an elementary route into the subject.
Experimental Simulation of Closed Timelike Curves
Martin Ringbauer; Matthew A. Broome; Casey R. Myers; Andrew G. White; Timothy C. Ralph
2015-01-20T23:59:59.000Z
Closed timelike curves are among the most controversial features of modern physics. As legitimate solutions to Einstein's field equations, they allow for time travel, which instinctively seems paradoxical. However, in the quantum regime these paradoxes can be resolved leaving closed timelike curves consistent with relativity. The study of these systems therefore provides valuable insight into non-linearities and the emergence of causal structures in quantum mechanics-essential for any formulation of a quantum theory of gravity. Here we experimentally simulate the non-linear behaviour of a qubit interacting unitarily with an older version of itself, addressing some of the fascinating effects that arise in systems traversing a closed timelike curve. These include perfect discrimination of non-orthogonal states and, most intriguingly, the ability to distinguish nominally equivalent ways of preparing pure quantum states. Finally, we examine the dependence of these effects on the initial qubit state, the form of the unitary interaction, and the influence of decoherence.
Quantum Coherence and Closed Timelike Curves
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.
An investigation on stochastic specific activity curves
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...
Chiral gap effect in curved space
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.
Complex Fluid Analysis with the Advanced Distillation Curve Approach
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
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:
Closed timelike curves in general relativity
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.
Research Summary Estimating Woodfuel Resource Cost Curves
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
Fractionalization of Interstitials in Curved Colloidal Crystals
William T. M. Irvine; Mark J. Bowick; Paul M. Chaikin
2013-10-11T23:59:59.000Z
Understanding the out-of equilibrium behaviour of point defects in crystals, yields insights into the nature and fragility of the ordered state, as well as being of great practical importance. In some rare cases defects are spontaneously healed - a one-dimensional crystal formed by a line of identical charged particles, for example, can accommodate an interstitial (extra particle) by a re-adjusting all particle positions to even out the spacing. In sharp contrast, particles organized into a perfect hexagonal crystal in the plane cannot accommodate an interstitial by a simple re-adjustment of the particle spacing - the interstitial remains instead trapped between lattice sites and diffuses by hopping, leaving the crystal permanently defected. Here we report on the behavior of interstitials in colloidal crystals on curved surfaces. Using optical tweezers operated independently of three dimensional imaging, we insert a colloidal interstitial in a lattice of similar particles on flat and curved (positively and negatively) oil-glycerol interfaces and image the ensuing dynamics. We find that, unlike in flat space, the curved crystals self-heal through a collective rearrangement that re-distributes the increased density associated with the interstitial. The self-healing process can be interpreted in terms of an out of equilibrium interaction of topological defects with each other and with the underlying curvature. Our observations suggest the existence of "particle fractionalization" on curved surface crystals.
Curving Dynamics in High Speed PUBLIC VERSION
Curving Dynamics in High Speed Trains PUBLIC VERSION Daniele Bigoni Kongens Lyngby 2011 IMM forces on the dynamics, due to the high speed spinning of the wheel sets, has been highlighted. The wheel-rail interaction is modeled using the Hertz's static contact theory, corrected with the Kalker
Magnetar Driven Shock Breakout and Double Peaked Supernova Light Curves
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...
General Relativistic Rotation Curves in a Post-Newtonian Light
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.
Dirac Equation on a Curved 2+1 Dimensional Hypersurface
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.
Johnson Jr.,, Ray
Training & Technology Solutions Queens College ~ Office of Information Technology ~ Training & Technology Solutions 718-997-4875 ~ training@qc.cuny.edu ~ I-Bldg 214 Faculty Center My Textbooks Navigation information for a class, the Textbook Details section needs to be filled out. Please be as precise as possible
Technology reviews: Glazing systems
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.
Technology reviews: Shading systems
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.
Curved butterfly bileaflet prosthetic cardiac valve
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.
Centrifugally driven relativistic dynamics on curved trajectories
Andria Rogava; George Dalakishvili; Zaza Osmanov
2003-03-27T23:59:59.000Z
Motion of test particles along rotating curved trajectories is considered. The problem is studied both in the laboratory and the rotating frames of reference. It is assumed that the system rotates with the constant angular velocity $\\omega = const$. The solutions are found and analyzed for the case when the form of the trajectory is given by an Archimedes spiral. It is found that particles can reach infinity while they move along these trajectories and the physical interpretation of their behaviour is given. The analogy of this idealized study with the motion of particles along the curved rotating magnetic field lines in the pulsar magnetosphere is pointed out. We discuss further physical development (the conserved total energy case, when $\\omega \
Field Theory on Curved Noncommutative Spacetimes
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.
Detection of interlayer communication using type curves
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...
Galaxy rotation curves in de Sitter space
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.
Light Curves of Swift Gamma Ray Bursts
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.
Quantum Mechanics and Closed Timelike Curves
Florin Moldoveanu
2007-04-23T23:59:59.000Z
General relativity allows solutions exhibiting closed timelike curves. Time travel generates paradoxes and quantum mechanics generalizations were proposed to solve those paradoxes. The implications of self-consistent interactions on acausal region of space-time are investigated. If the correspondence principle is true, then all generalizations of quantum mechanics on acausal manifolds are not renormalizable. Therefore quantum mechanics can only be defined on global hyperbolic manifolds and all general relativity solutions exhibiting time travel are unphysical.
Incorporating Experience Curves in Appliance Standards Analysis
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.
Capillary migration of microdisks on curved interfaces
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.
Spatial and Temporal Variations of Light Curves in Gravitationally Lensed Sources
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.
What's Possible for Clean Energy
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
Computational design with curved creases : David Huffman's approach to paperfolding
Koschitz, Richard Duks
2014-01-01T23:59:59.000Z
This dissertation provides a new framework for defining design approaches with curved creases by investigating the work of David A. Huffman, famous computer scientist and pioneer of curved-crease paperfolding. The history ...
Visual Attention and Driver Performance at Horizontal Curves
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...
Local Orthogonal Cutting Method for Computing Medial Curves and...
Office of Scientific and Technical Information (OSTI)
BLOOD VESSELS; COMPUTERS; DIFFERENTIAL GEOMETRY; EFFICIENCY; EIGENVALUES; LUNGS; MINIMIZATION; RELIABILITY; SHAPE; SIMULATION; STABILITY; SURGERY curves and surfaces;...
Length and Energy of Quadratic Bezier Curves and Applications
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
Number of Jacobi quartic curves over finite Rongquan Feng1
International Association for Cryptologic Research (IACR)
Number of Jacobi quartic curves over finite fields Rongquan Feng1 , Hongfeng Wu2 1 LMAM, School@gmail.com Abstract In this paper the number of Fq-isomorphism classes of Jacobi quar- tic curves, i.e., the number of Jacobi quartic curves with distinct j- invariants, over finite field Fq is enumerated. Keywords: Elliptic
Tracking Endocardium Using Optical Flow along Iso-Value Curve
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
Possible Pressure Effect for Superconductors
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.
Faculty of Science: Possible Careers
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
Wave Energy challenges and possibilities
© 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
A. Retter; W. Liller; G. Garradd
1999-05-28T23:59:59.000Z
We present results of continuous CCD photometry of Nova Muscae 1998 during 17 nights obtained mainly during the transition phase in the light curve of the young nova. We discovered a periodical oscillation with the period 0.16930 day. This result is important for understanding this peculiar stage in the light curve of certain classical novae. We also note a possible connection between the transition / dust phase in nova light curves and intermediate polar systems.
Negative decline curves of coalbed degasification wells
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.
Modeling the Phillips curve with unobserved components
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...
TRANSPORT AND REDUCTION POSSIBILITIES DURING TPBAR EXTRACTION
Korinko, P
2008-05-19T23:59:59.000Z
In light of the discovery of the activated zinc 65 in the TEF process piping, a discussion of potential sources and mechanisms for the production of this species has been initiated. A suspected source is the presence of Cu as a contaminant in many of the alloy components that comprise the TPBARs and the presence of Zn as a contaminant in the aluminide coating. These two sources are expected to produce metallic transmutation products that could be mobile and be extracted from the metallic components of the TPBARs. Another potential source is the presence of ZnO that is present as part of the crud on the external surfaces of the TPBARs. In addition, it is conceivable to have ZnO within the TPBARs from transmutation products and subsequent oxidation reactions with water. This memo does not attempt to address all of the possible sources, nor does it derive the most likely scenarios as to how Zn or ZnO may be present in the TPBARs it merely posits that it is present as a transmutation product and if present, elementally, it may be mobile under high vacuum conditions at high temperatures as indicated by the pressure temperature curve shown in Fig. 1. Further, this document shows that it is thermodynamically feasible to reduce ZnO to Zn by solid state reactions of the ZnO with other metallic components in the TPBARs. However, for these reactions to occur, the ZnO must be in contact with the more active metal so that the chemical reactions can occur. The proposed reactions are based on equilibrium thermodynamics. For simplicity, they do not take into account the quantities of the various materials, the compositions, the effect of alloying, or other technical issues, they are intended only to provide feasibility for the reduction reactions. A more complete thermodynamic model can be developed, but it will require actual contents and be much more complicated with little value added.
Clifford Fibrations and Possible Kinematics
Alan S. McRae
2009-07-14T23:59:59.000Z
Following Herranz and Santander [Herranz F.J., Santander M., Mem. Real Acad. Cienc. Exact. Fis. Natur. Madrid 32 (1998), 59-84, physics/9702030] we will construct homogeneous spaces based on possible kinematical algebras and groups [Bacry H., Levy-Leblond J.-M., J. Math. Phys. 9 (1967), 1605-1614] and their contractions for 2-dimensional spacetimes. Our construction is different in that it is based on a generalized Clifford fibration: Following Penrose [Penrose R., Alfred A. Knopf, Inc., New York, 2005] we will call our fibration a Clifford fibration and not a Hopf fibration, as our fibration is a geometrical construction. The simple algebraic properties of the fibration describe the geometrical properties of the kinematical algebras and groups as well as the spacetimes that are derived from them. We develop an algebraic framework that handles all possible kinematic algebras save one, the static algebra.
The smallest possible heat engines
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.
Light curves from rapidly rotating neutron stars
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...
Axiomatic quantum field theory in curved spacetime
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.
Wyatt, Lucy
Engineering &Technology CareersFair2015 #12;Welcome to the Engineering and Technology Careers Fair Turbines Chemring Technology Solutions Cirrus Logic Connectus Davide Leone and Partners Investment Deloitte European Information Service Centre FactSet FDM Group Fidelity Technologies Fidessa G-Research Gradcracker
DEVELOPING FLOW AND HEAT TRANSFER IN STRONGLY CURVED DUCTS OF RECTANGULAR CROSS-SECTION
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
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
Searching for Empirical Regularity and Theoretical Structure: The Environmental Kuznets Curve
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
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...
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...
Curved Spacetimes and Curved Graphene: a status report of the Weyl-symmetry approach
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.
Low Level Heat Recovery Technology
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...
Low Level Heat Recovery Technology
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...
Bringing Tabletop Technologies to Kindergarten Javier Marco, Eva Cerezo, Sandra
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
Possibility in the Actual World
Webb, Douglas J.
Possibility in the Actual World Douglas J. Webb I. Introduction If one affirms an unrestricted law of bivalence, then there is a set of present truths that captures everything about the future. To begin, let me explain and briefly criticize... no other way the world (this world) can go. What is true cannot become false; hence what is true is logically fixed, or necessarily true. On the other hand, we suspect that in the reasoning just mentioned we are somehow confusing truth with necessity...
Force-extension curves of bacterial flagella
Reinhard Vogel; Holger Stark
2010-11-10T23:59:59.000Z
Bacterial flagella assume different helical shapes during the tumbling phase of a bacterium but also in response to varying environmental conditions. Force-extension measurements by Darnton and Berg explicitly demonstrate a transformation from the coiled to the normal helical state [N.C. Darnton and H.C. Berg, Biophys. J. {92}, 2230 (2007)]. We here develop an elastic model for the flagellum based on Kirchhoff's theory of an elastic rod that describes such a polymorphic transformation and use resistive force theory to couple the flagellum to the aqueous environment. We present Brownian dynamics simulations that quantitatively reproduce the force-extension curves and study how the ratio $\\Gamma$ of torsional to bending rigidity and the extensional rate influence the response of the flagellum. An upper bound for $\\Gamma$ is given. Using clamped flagella, we show in an adiabatic approximation that the mean extension, where a local coiled-to-normal transition occurs first, depends on the logarithm of the extensional rate.
Remote quantum states in curved spacetime
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.
Hydrogen atom on curved noncommutative space
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.
Inherent driving force for charge separation in curved stacks of oligothiophenes
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Wu, Qin
2015-01-30T23:59:59.000Z
Coexistence of high local charge mobility and an energy gradient can lead to efficient free charge carrier generation from geminate charge transfer states at the donor–acceptor interface in bulk heterojunction organic photovoltaics. It is, however, not clear what polymer microstructures can support such coexistence. Using recent methods from density functional theory, we propose that a stack of similarly curved oligothiophene chains can deliver the requirements for efficient charge separation. Curved stacks are stable because of the polymer’s strong ?-stacking ability and because backbone torsions are flexible in neutral chains. However, energy of a charge in a polymer chain has remarkablymore »stronger dependence on torsions. The trend of increasing planarity in curved stacks effectively creates an energy gradient that drives charge in one direction. The curvature of these partially ordered stacks is found to beneficially interact with fullerenes for charge separation. The curved stacks, therefore, are identified as possible building blocks for interfacial structures that lead to efficient free carrier generation in high-performing organic photovoltaic systems.« less
technology offer Vienna University of Technology/ Research and Transfer Support | Hildegard Sieberth
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
A Curved Boundary Treatment for Discontinuous Galerkin Schemes ...
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
THE CENTRAL CURVE IN LINEAR PROGRAMMING 1. Introduction ...
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 ...
Semistable Models of Curves Resolution of singularities on the tower of modular
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
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.
Calibration curves for some standard Gap Tests
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.
Properties of branes in curved spacetimes
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.
Supersymmetric branes on curved spaces and fluxes
Triendl, Hagen
2015-01-01T23:59:59.000Z
We discuss general supersymmetric brane configurations in flux backgrounds of string and M-theory and derive a necessary condition for the worldvolume theory to be supersymmetric on a given curved manifold. This condition resembles very much the conditions found from coupling a supersymmetric field theory to off-shell supergravity but can be derived in any dimension and for up to sixteen supercharges. Apart from the topological twist, all couplings appearing in the supersymmetry condition are linked to fluxes in the bulk. We explicitly derive the condition for D3-, M2- and M5-branes, in which case the results are also useful for constructing holographic duals to the corresponding field theories. In $N=1$ setups we compare the supersymmetry conditions to those that arise by coupling the field theory to off-shell supergravity. We find that the couplings of both old and new minimal supergravity are simultaneously realized, indicating that off-shell supergravity should be coupled via the S-multiplet of 16/16 supe...
Ghost condensate model of flat rotation curves
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.
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.
REVISITING THE LIGHT CURVES OF GAMMA-RAY BURSTS IN THE RELATIVISTIC TURBULENCE MODEL
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.
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...
Vehicle Technologies Office: 2014 Electric Drive Technologies...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Vehicle Technologies Office: 2014 Electric Drive Technologies Annual Progress Report Vehicle Technologies Office: 2014 Electric Drive Technologies Annual Progress Report The...
Cortical Hemisphere Registration Via Large Deformation Diffeomorphic Metric Curve
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
COMPLETE BOUNDED NULL CURVES IMMERSED IN C3
Martín, Francisco
COMPLETE BOUNDED NULL CURVES IMMERSED IN C3 AND SL(2, C) FRANCISCO MARTIN, MASAAKI UMEHARA, AND KOTARO YAMADA ABSTRACT. We construct a simply connected complete bounded Bryant surface in the hyperbolic 3-space H3. Such a surface in H3 can be lifted as a complete bounded null curve in SL(2, C). Using
Fast Quadrupling of a Point on Elliptic Curves Cryptography
International Association for Cryptologic Research (IACR)
Fast Quadrupling of a Point on Elliptic Curves Cryptography Duc-Phong Le Temasek Laboratories of Weierstrass form. In this paper we extend their method and present a fast algorithm for computing 4P with only algorithm gains better results. Keywords: Elliptic curve cryptography, fast arithmetic, affine co- ordinates
Fast and compact elliptic-curve cryptography Mike Hamburg
International Association for Cryptologic Research (IACR)
Fast and compact elliptic-curve cryptography Mike Hamburg Abstract Elliptic curve cryptosystems]). We believe the above speeds are fast enough that additional cache pollution would not be worth. Fast Sandy Bridge benchmarks are somewhat unsatisfying. We set new records for signing and verification
Classification and forecasting of load curves Nolwen Huet
Cuesta, Juan Antonio
on up to stabilisation of the clusters. Finally, the load profiles are predicted by covariance analysisClassification and forecasting of load curves Nolwen Huet Abstract The load curve, which gives the time evolution of the power requested by a customer, enables EDF to have a better knowledge
Stochastic Analysis of Wind Turbine Power Curves Edgar Anahua
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
Array E Calibration Curves PAGE 1 OF 22
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
HONDA-TATE THEOREM FOR ELLIPTIC CURVES MIHRAN PAPIKIAN
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
Fast Multipole Representation of Diffusion Curves and Points Timothy Sun
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
Oil production models with normal rate curves Dudley Stark
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
Embeddings of Surfaces, Curves, and Moving Points in Euclidean Space
Agarwal, Pankaj K.
generally between low-dimensional flats, polynomial curves, curves with low winding degree, and polynomial such as text and image data [Kle97, IM98, KOR00]. Dimensionality reduction is a powerful tool in tackling. Department of Computer Science, Duke University, Durham, NC 27708, USA; pankaj@cs.duke.edu Department
Normal holomorphic curves from parabolic regions to projective ...
of meromorphic functions (f0,f1,...,fn) in G ? C defines a holomorphic. curve f : G ... Cartan characteristic of a holomorphic curve f : C ? Pn is defined by. T(r, f) = 1 ..... ?? |log f#(z)||dz| ? c. (14). and for every a ? ¯C. ?? |log (dist(f(z),a)). ?1. ||dz
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.
Cosmological Applications of Algebraic Quantum Field Theory in Curved Spacetimes
Hack, Thomas-Paul
2015-01-01T23:59:59.000Z
This monograph provides a largely self--contained and broadly accessible exposition of two cosmological applications of algebraic quantum field theory (QFT) in curved spacetime: a fundamental analysis of the cosmological evolution according to the Standard Model of Cosmology and a fundamental study of the perturbations in Inflation. The two central sections of the book dealing with these applications are preceded by sections containing a pedagogical introduction to the subject as well as introductory material on the construction of linear QFTs on general curved spacetimes with and without gauge symmetry in the algebraic approach, physically meaningful quantum states on general curved spacetimes, and the backreaction of quantum fields in curved spacetimes via the semiclassical Einstein equation. The target reader should have a basic understanding of General Relativity and QFT on Minkowski spacetime, but does not need to have a background in QFT on curved spacetimes or the algebraic approach to QFT. In particul...
On the extension of Newton's second law to theories of gravitation in curved space-time
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.
Technology reviews: Daylighting optical systems
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.
David J. Jeffery
1999-07-01T23:59:59.000Z
The radioactive decay energy (RDE) deposition in supernovae from the decay chain Ni56-Co56-Fe56 usually directly powers the UV/optical/IR (UVOIR) bolometric luminosity of supernovae in their quasi-steady state phase until very late times. The result for this phase is exponential/quasi-exponential UVOIR bolometric light curves and often exponential/quasi-exponential broad band light curves. A presentation is given of a simple, approximate, analytic treatment of RDE deposition that provides a straightforward understanding of the exponential/quasi-exponential behavior of the UVOIR bolometric luminosity and a partial understanding of the exponential/quasi-exponential behavior of the broad band light curves. The treatment reduces to using a normalized deposition function N_{Ni}^{*}(t) as an analysis tool. The one free parameter of N_{Ni}^{*}(t) is a fiducial time t_{0} which governs time-varying gamma-ray optical depth behavior of a supernova. The N_{Ni}^{*}(t) function is used to analyze the preliminary UVOIR bolometric light curve of SN Ic 1998bw (the possible cause of gamma-ray burst GRB980425). The SN 1998bw t_{0} is found to be 134.42 days and a prediction is made for the evolution of the SN 1998bw RDE deposition curve and quasi-steady state UVOIR bolometric light curve out to day 1000 after the explosion. A very crude estimate of the SN 1998bw mass obtained from the light curve analysis is 4.26 M_{Sun}. As further examples of the simple analytic treatment, the RDE deposition and luminosity evolution of SN Ia 1992A and SN II 1987A have also been examined. The simple analytic treatment of RDE deposition has actually existed for 20 years at least without, apparently, being discussed at length. The main value of this paper is the explicit, detailed, general presentation of this analytic treatment.
Progress Report on Alloy 617 Isochronous Stress-Strain Curves
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.
Technological and institutional `lock-in' as a barrier to sustainable Timothy J. Foxon,
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
How predictable is technological progress?
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.
Denis Borisov; Giuseppe Cardone; Tiziana Durante
2015-03-21T23:59:59.000Z
We consider an infinite planar straight strip perforated by small holes along a curve. In such domain, we consider a general second order elliptic operator subject to classical boundary conditions on the holes. Assuming that the perforation is non-periodic and satisfies rather weak assumptions, we describe all possible homogenized problems. Our main result is the norm resolvent convergence of the perturbed operator to a homogenized one in various operator norms and the estimates for the rate of convergence. On the basis of the norm resolvent convergence, we prove the convergence of the spectrum.
Bolometric and UV light curves of core-collapse supernovae
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.
Exhaustive search system and method using space-filling curves
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.
Estimating type curve parameters with the cumulative curvature method
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...
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.
FUEL CELL TECHNOLOGIES PROGRAM Technologies
and distribution pipelines, bulk storage vessels, and refueling stations) that will support its consumer use. How of natural gas pipelines, the current hydrogen pipeline infrastructure in the U.S. is very small, less than 1FUEL CELL TECHNOLOGIES PROGRAM Fuel Cell Technologies Program: Delivery Hydrogen Distribution
On spontaneous emission into guided modes with curved wavefronts
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.
Small distance expansion for radiative heat transfer between curved objects
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 ...
Convex hulls of a curve in control theory
Kurbatskii, Aleksei N [Moscow School of Economics of Lomonosov MSU, Moscow (Russian Federation)
2012-03-31T23:59:59.000Z
A classification is obtained for typical singularities of the local transitivity sets of control systems on three-dimensional manifolds with nonconvex indicatrices that are closed smooth spatial curves. Bibliography: 8 titles.
Comparison of Emperical Decline Curve Analysis for Shale Wells
Kanfar, Mohammed Sami
2013-07-13T23:59:59.000Z
This study compares four recently developed decline curve methods and the traditional Arps or Fetkovich approach. The four methods which are empirically formulated for shale and tight gas wells are: 1. Power Law Exponential Decline (PLE). 2...
POSSIBILITIES for OYSTER CULTURE in PUERTO RICO
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
Seiberg-Witten curve via generalized matrix model
Kazunobu Maruyoshi; Futoshi Yagi
2010-12-27T23:59:59.000Z
We study the generalized matrix model which corresponds to the n-point toric Virasoro conformal block. This describes four-dimensional N=2 SU(2)^n gauge theory with circular quiver diagram by the AGT relation. We first verify that it is obtained from the perturbative calculation of the Liouville correlation function. We derive the Seiberg-Witten curve for N=2 gauge theory as a spectral curve of the generalized matrix model.
Application of the decline curve method to aquifers
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...
Automatic classification of eclipsing binaries light curves using neural networks
L. M. Sarro; C. Sánchez-Fernández; A. Giménez
2005-11-11T23:59:59.000Z
In this work we present a system for the automatic classification of the light curves of eclipsing binaries. This system is based on a classification scheme that aims to separate eclipsing binary sistems according to their geometrical configuration in a modified version of the traditional classification scheme. The classification is performed by a Bayesian ensemble of neural networks trained with {\\em Hipparcos} data of seven different categories including eccentric binary systems and two types of pulsating light curve morphologies.
Broader source: Energy.gov [DOE]
To reduce solar technology risks, DOE and its partners evaluate the performance and reliability of novel photovoltaic (PV) hardware and systems through laboratory and field testing. The focus of...
What's Possible at WID? Video transcript
Willett, Rebecca
use 3D printing technology to represent these texts, but also now? Society is going through many changes. We have energy crises, population
Environmental Kuznets Curve for carbon dioxide emissions: lack of robustness to heterogeneity?
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
Memory technology evolution: an overview of system memory technologies
Lee, Hsien-Hsin "Sean"
Memory technology evolution: an overview of system memory technologies technology brief, 7th............................................................................................................................ 5 SDRAM technology ................................................................................. 8 Advanced memory technologies
Technology Support 9/27/2004 2:05 PM
Rock, Chris
Technology Support 9/27/2004 2:05 PM 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
Learning curves for environmental technology and their importance for climate policy analysis
Rubin, Edward S.; Taylor, Margaret R; Yeh, Sonia; Hounshell, David A.
2007-01-01T23:59:59.000Z
for a standardized coal- fired power plant (500 MW, 80% N Ocontrol costs of coal-fired power-plants. Environmentaltechnologies at coal-fired power plants are flue gas desul-
Yeh, Sonia; Rubin, Edward S.
2007-01-01T23:59:59.000Z
and Japan, where higher coal prices justi?ed the higher costof the total O&M cost and the coal price remained relatively
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,
Learning curves for environmental technology and their importance for climate policy analysis
Rubin, Edward S.; Taylor, Margaret R; Yeh, Sonia; Hounshell, David A.
2007-01-01T23:59:59.000Z
costs for a standardized coal- fired power plant (500 MW,F G D installations on coal-fired plants. London: IEA Coalcontrol costs of coal-fired power-plants. Environmental
Yeh, Sonia; Rubin, Edward
2007-01-01T23:59:59.000Z
allow ultra-supercritical boilers to achieve still higherthat supercritical-coal boilers, at least in the 1970s, didGW/year) by type of boiler. Source: [25]. Net Efficiency (
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
Learning curves for environmental technology and their importance for climate policy analysis
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,
Yeh, Sonia; Rubin, Edward S.
2007-01-01T23:59:59.000Z
reason is that supercritical-coal boilers, at least in thenot operate well on U.S. coal with high sulfur and active32 (2007) 1996–2005 Pulverized Coal Installed Capacity (GW)
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,
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
Quantifying the economic potential of a biomass to olefin technology
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. ...
Nanotechnology at Maryland Nanotechnologies technologies using the special
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
Scalar potential model of spiral galaxy HI rotation curves and rotation curve asymmetry
John C. Hodge
2006-11-22T23:59:59.000Z
A scalar potential model (SPM) was developed from considerations of galaxy clusters and of redshift. The SPM is applied to HI rotation curves (RCs) and RC asymmetry of spiral galaxies. The resulting model adds the force of a scalar potential of the host galaxy and of neighboring galaxies to the Newtonian rotation velocity equation. The RC is partitioned radially into regions. The form of the equation for each parameter of each region is the same with differing proportionality constants. Integer values of each equation are determined empirically for each galaxy. Among the sample galaxies, the global properties of galaxies of B band luminosity, of position, and of orientation determine the RC and RC asymmetry. The Source of the scalar field acts as a monopole at distances of a few kpc from the centre of spiral galaxies. The scalar potential field causes Newtonian mechanics to considerably underestimate the mass in galaxies, which is the ``missing mass problem''. The SPM is consistent with RC and RC asymmetry observations of the sample spiral galaxies.
Possible mechanism of adhesion in a mica supported phospholipid bilayer
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.
Automatic generation and analysis of solar cell IV curves
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.
Electromagnetic field limits set by the V-Curve.
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.
Laser selective chemistry -is it possible?
Zewail, Ahmed
Laser selective chemistry -is it possible? Ahmed H. Zewail Reprinted I'rom PHYSI('S TODAY November 1980 c IYHii An~czr~Laser selective chemistry 3-is it possible limited by statistical thermody- namic laws. With sufficientlybrief and intense laser radiation properly
Alternative Energy Technologies Solar Power
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 gauges, gas sensors. Light-emitting diodes (LED's) Power amplifiers for cell phones Indium Gallium #12
Southampton, University of
requirements of OEM and general market customers. Applications include power steering and small traction Electronics Lockheed Martin London Power Associates M&G Investments Micro Focus Murata Power Solutions MWR management consulting, technology services and outsourcing companies in the world today. Transforming
Kemner, Ken
with nuclear fast reactors, pyroprocessing would: 4 Allow 100 times more of the energy in uranium ore production by recycling the uranium and transuranics to fast reactors for energy production. 4 Markedly are developing and refining several pyroprocessing technologies for both light water and fast reactors, working
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...
Fitting the Galaxy Rotation Curves: Strings versus NFW profile
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.
Science &Technology Facilities Council
Science &Technology Facilities Council Science &Technology Facilities Council Science and Technology Facilities Council Annual Report and Accounts 2011-2012 Science and Technology Facilities Council Laboratory, Cheshire; UK Astronomy Technology Centre, Edinburgh; Chilbolton Observatory, Hampshire; Isaac
SELECTING INFORMATION TECHNOLOGY SECURITY
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
A SECOND LOOK AT THE SAFETY EFFECTIVENESS OF THE MYRTLE CREEK ADVANCED CURVE WARNING SYSTEM
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
A Comparison of Vehicle Speed at Day and Night Rural Horizontal Curves
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...
A Comparison of Vehicle Speed at Day and Night Rural Horizontal Curves
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...
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article) |govInstrumentsmfrirtA Journey Inside theFacebookTechnicalBio-InspiredtechnologiesTechnology Transfer Since 1974, the
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.
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.
Power Density Spectra of Gamma-Ray Burst Light Curves: Implications on Theory and Observation
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.
Testing MONDian dark matter with galactic rotation curves
Edmonds, Doug [Department of Physics, Emory and Henry College, Emory, VA 24327 (United States); Farrah, Duncan; Minic, Djordje; Takeuchi, Tatsu [Department of Physics, Virginia Tech, Blacksburg, VA 24061 (United States); Ho, Chiu Man [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Ng, Y. Jack, E-mail: dedmonds@ehc.edu, E-mail: farrah@vt.edu, E-mail: dminic@vt.edu, E-mail: takeuchi@vt.edu, E-mail: chiuman.ho@vanderbilt.edu, E-mail: yjng@physics.unc.edu [Institute of Field Physics, Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599 (United States)
2014-09-20T23:59:59.000Z
MONDian dark matter (MDM) is a new form of dark matter quantum that naturally accounts for Milgrom's scaling, usually associated with modified Newtonian dynamics (MOND), and theoretically behaves like cold dark matter (CDM) at cluster and cosmic scales. In this paper, we provide the first observational test of MDM by fitting rotation curves to a sample of 30 local spiral galaxies (z ? 0.003). For comparison, we also fit the galactic rotation curves using MOND and CDM. We find that all three models fit the data well. The rotation curves predicted by MDM and MOND are virtually indistinguishable over the range of observed radii (?1 to 30 kpc). The best-fit MDM and CDM density profiles are compared. We also compare with MDM the dark matter density profiles arising from MOND if Milgrom's formula is interpreted as Newtonian gravity with an extra source term instead of as a modification of inertia. We find that discrepancies between MDM and MOND will occur near the center of a typical spiral galaxy. In these regions, instead of continuing to rise sharply, the MDM mass density turns over and drops as we approach the center of the galaxy. Our results show that MDM, which restricts the nature of the dark matter quantum by accounting for Milgrom's scaling, accurately reproduces observed rotation curves.
A Construction for Computer Visualization Certain Complex Curves
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
Wind Energy Learning Curves for Reference in Expert Elicitations
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
THE ECONOMICS OF CONSERVED-ENERGY "SUPPLY" CURVES
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
Fast hashing onto elliptic curves over elds of characteristic 3
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
Monomial Embeddings of the Klein Curve \\Lambda Iwan M. Duursma
Duursma, Iwan M.
of the automorÂ 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
Symmetries for Galileons and DBI scalars on curved space
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Goon, Garrett; Hinterbichler, Kurt; Trodden, Mark
2011-07-08T23:59:59.000Z
We introduced a general class of four-dimensional effective field theories which include curved space Galileons and DBI theories possessing nonlinear shift-like symmetries. These effective theories arise from purely gravitational actions and may prove relevant to the cosmology of both the early and late universe.
Fast Software Implementation of Binary Elliptic Curve Cryptography
International Association for Cryptologic Research (IACR)
Fast Software Implementation of Binary Elliptic Curve Cryptography Manuel Bluhm1 and Shay Gueron2 at the coding level. The fast carry-less multiplication is further used to speed up the reduction on the newest on high end processors. This was mainly caused by the fast integer multiplication units compared to slow
RIEMANN SURFACES, PLANE ALGEBRAIC CURVES AND THEIR PERIOD MATRICES
numerically the canonical map. Therefore symmetric 1991 Mathematics Subject Classification. 14Q05, 14H55, 14P for computing a representation of a compact Riemann surface as an algebraic plane curve and to compute a numerical approximation for its period matrix. We will describe a program Cars ([3]) that can be used
Learning Curve: A Simulation-based Approach to Dynamic Pricing
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
Neutrino flavor oscillations in a curved space-time
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.
Revising neutrino oscillations in a curved space-time
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).
Experience Curves and Solar PV Fred Heutte, Senior Policy Associate
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
Computing local p-adic height pairings on hyperelliptic curves
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.
Requirements, possible alternatives & international NEUTRON SCATTERING
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
Venus Technology Plan Venus Technology Plan
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
Novakova, Katerina; Vaclavik, Jan; 10.1109/TUFFC.2012.2420
2012-01-01T23:59:59.000Z
This paper analyzes the possibility of increasing the acoustic transmission loss of sound transmitted through planar or curved glass shells using attached piezoelectric macro fiber composite (MFC) actuators shunted by active circuits with a negative capacitance. The key features that control the sound transmission through the curved glass shells are analyzed using an analytical approximative model. A detailed analysis of the particular arrangement of MFC actuators on the glass shell is performed using a finite element method (FEM) model. The FEM model takes into account the effect of a flexible frame that clamps the glass shell at its edges. A method is presented for the active control of the Young's modulus and the bending stiffness coefficient of the composite sandwich structure that consists of a glass plate and the attached piezoelectric MFC actuator. The predictions of the acoustic transmission loss frequency dependencies obtained by the FEM model are compared with experimental data. The results indicate...
Quantum field theory in curved spacetime, the operator product expansion, and dark energy
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.
Graphene wormholes: A condensed matter illustration of Dirac fermions in curved space
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.
Hagedorn String Thermodynamics in Curved Spacetimes and near Black Hole Horizons
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.
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...
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
Information Technology and Libraries
Hubble, Ann; Murphy, Deborah A.; Perry, Susan Chesley
2011-01-01T23:59:59.000Z
Sue Chesley Perry 196 INFORMATION TECHNOLOGY AND LIBRARIES |LITA - Library & Information Technology Association). ”Two of the 190 INFORMATION TECHNOLOGY AND LIBRARIES |
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article) |govInstrumentsmfrirt DocumentationSitesWeather6 SharesAdministration AboutWebsite ContactEnergy StorageTechnologies Our
Pearling instability of membrane tubes driven by curved proteins and actin polymerization
Urška Jeler?i?; Nir S. Gov
2014-09-26T23:59:59.000Z
Membrane deformation inside living cells is crucial for the proper shaping of various intracellular organelles and is necessary during the fission/fusion processes that allow membrane recycling and transport (e.g. endocytosis). Proteins that induce membrane curvature play a key role in such processes, mostly by adsorbing to the membrane and forming a scaffold that deforms the membrane according to the curvature of the proteins. In this paper we explore the possibility of membrane tube destabilisation through a pearling mechanism enabled by the combined effects of the adsorbed curved proteins and the actin polymerization they may recruit. The pearling instability can furthermore serve as the initiation for fission of the tube into vesicles. We find that adsorbed proteins are more likely to stabilise the tubes, while the actin polymerization can provide the additional constrictive force needed for the robust instability. We discuss the relevance of the theoretical results to in-vivo and in-vitro experiments.
Operator formalism for b-c systems with $?=1$ on general algebraic curves
F. Ferrari; J. Sobczyk
1995-01-27T23:59:59.000Z
In this letter we develope an operator formalism for the $b-c$ systems with conformal weight $\\lambda=1$ defined on a general closed and orientable Riemann surface. The advantage of our approach is that the Riemann surface is represented as an affine algebraic curve. In this way it is possible to perform explicit calculations in string theory at any perturbative order. Besides the obvious applications in string theories and conformal field theories, (the $b-c$ systems at $\\lambda=1$ are intimately related to the free scalar field theory), the operator formalism presented here sheds some light also on the quantization of field theories on Riemann surfaces. In fact, we are able to construct explicitly the vacuum state of the $b-c$ systems and to define creation and annihilation operators. All the amplitudes are rigorously computed using simple normal ordering prescriptions as in the flat case.
Tools & Technologies | Department of Energy
Technologies Tools & Technologies Tools & Technologies We provide leadership for transforming workforce development through the power of technology. It develops corporate...
Distributed Energy Technology Characterization (Desiccant Technologies...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
applications, and to show how these technologies can be designed to utilize the available thermal energy from a combined heat and power (CHP) system. This technology...
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...
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...
Optics-less smart sensors and a possible mechanism of cutaneous vision in nature
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.
Dissipative dark matter and the rotation curves of dwarf galaxies
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...
Replicating the benefits of closed timelike curves without breaking causality
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.
Trapping and guiding surface plasmons in curved graphene landscapes
Smirnova, Daria; Wang, Zheng; Kivshar, Yuri S; Khanikaev, Alexander B
2015-01-01T23:59:59.000Z
We demonstrate that graphene placed on top of structured substrates offers a novel approach for trapping and guiding surface plasmons. A monolayer graphene with a spatially varying curvature exhibits an effective trapping potential for graphene plasmons near curved areas such as bumps, humps and wells. We derive the governing equation for describing such localized channel plasmons guided by curved graphene and validate our theory by the first-principle numerical simulations. The proposed confinement mechanism enables plasmon guiding by the regions of maximal curvature, and it offers a versatile platform for manipulating light in planar landscapes. In addition, isolated deformations of graphene such as bumps are shown to support localized surface modes and resonances suggesting a new way to engineer plasmonic metasurfaces.
Curve fitting methods for solar radiation data modeling
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.
A consideration of a micro-Phillips' Curve
Paczkowski, Walter Richard
1973-01-01T23:59:59.000Z
Micro-Phillips' Curve (August 1973) j Walter Richard Paczkowski, A. B. , Rutgers College of Rutgers University; Directed by: Dr. Arthur S. De Vany The notion of a Phillips' Curve has been in the forefront of economic literature for over a decade... al Alt 0014 tQ W 0 Ql '0 Ql 40 g Q! 5 5~ Cl OA N 5 44 tU~ 44 '0 0 Ql 0 5 44 5 ttt 0 C 44 O 5 40 Ql 5 W Ql 5 0, 44 QU cd td 5 0! 5 Ql 5 5 5 B NC 5 Ql 5 44 ~ 44 5 5 Ql 5 ~ 0! B 'cl 04 44 0 Ql 44 40 0 cQ Ql 0 ~ 44 0 44 td 5 0 0 0 B...
Technology Support Services · Bob Davis · Associate Director User Support Services 1 #12;Technology Support Services · NUIT Technology Support Services (TSS) helps Northwestern faculty, staff, and students Technologies · Brian Nielsen · Project Manager Faculty Initiatives 8 #12;Support for Teaching & Learning
Department of Science, Technology, &
Huang, Wei
Society; the History of African Americans, Science and Technology; Religion and Technology; Intellectual topics include: ethics and nanotechnology; technology and democracy, the history of Eads Bridge history; women, gender and information technology; locating responsibility in computer systems; fighting
Discontinuous quantum evolutions in the presence of closed timelike curves
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.
Shading curves: vector-based drawing with explicit gradient control
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...
A dispersion curve study of dredged spoil basin inlets
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...
Possible Target Options Michael A. Green
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
'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.
Spacetime Warps for Spinning Particles Possible?
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.
A Possible Role for Immersion Freezing in
Eloranta, Edwin W.
A Possible Role for Immersion Freezing in Mixed-phase Stratus Clouds Gijs de Boer T. Hashino, G# Probability Density Function Cloud Min. Temp. Cloud Max. Temp. HomogeneousFreezing(;Jensenetal., 1998) SplinterEjection(>-8°C) (HeymsfieldandMossop, 1984) #12;Immersion Freezing Polar Cloud
Method of non-destructively inspecting a curved wall portion
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.
Experimental study of curved guide tubes for pellet injection
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.
Can CCM law properly represent all extinction curves?
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.
Can CCM law properly represent all extinction curves?
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.
Possibility of a photometric detection of "exomoons"
Szabó, G M; Diveki, Z; Simon, A; Szabo, Gy. M.; Diveki, Zs.
2006-01-01T23:59:59.000Z
We examined which exo-systems contain moons that may be detected in transit. We numerically modeled transit light curves of Earth-like and giant planets that cointain moons with 0.005--0.4 Earth-mass. The orbital parameters were randomly selected, but the entire system fulfilled Hill-stability. We conclude that the timing effect is caused by two scenarios: the motion of the planet and the moon around the barycenter. Which one dominates depends on the parameters of the system. Already planned missions (Kepler, COROT) may be able to detect the moon in transiting extrasolar Earth-Moon-like systems with a 20% probability. From our sample of 500 free-designed systems, 8 could be detected with the photometric accuracy of 0.1 mmag and a 1 minute sampling, and one contains a stony planet. With ten times better accuracy, 51 detections are expected. All such systems orbit far from the central star, with the orbital periods at least 200 and 10 days for the planet and the moon, while they contain K- and M-dwarf stars. Fi...
Conjectured Security of the ANSI-NIST Elliptic Curve RNG Daniel R. L. Brown
International Association for Cryptologic Research (IACR)
Conjectured Security of the ANSI-NIST Elliptic Curve RNG Daniel R. L. Brown March 29, 2006 Abstract An elliptic curve random number generator (ECRNG) has been proposed in ANSI and NIST draft standards
On the Computation of Integral Curves in Adaptive Mesh Refinement Vector Fields
Deines, Eduard
2012-01-01T23:59:59.000Z
Gen- eration of accurate integral surfaces in time-dependent2002. On the Computation of Integral Curves in Adaptive MeshOn the Computation of Integral Curves in Adaptive Mesh Re?
Lu, Zhiming
March 2012; published 22 May 2012. [1] Simulated contaminant breakthrough curves (BTC) are often used directly. In this study, we consider each BTC as a random curve, and use time-warping techniques to align
ORIGINAL ARTICLE Possible future trade-offs between agriculture, energy production,
Phipps, Steven J.
and advances in technology that enable deep shales containing oil and gas to be fractured and mined, and sunflowers. In addition, it is the center of a major oil and gas boom made possible by rising oil prices of the major grassland biomes-turned-granaries between resource exploitation and food production on one hand
Ultrafine-grained magnetite in deep-sea sediments: Possible bacterial magnetofossils
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
Unusual Transitions Made Possible by Superoscillations
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.
Technology reviews: Dynamic curtain wall systems
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.
High Performance Architecture for Elliptic Curve Scalar Multiplication over GF(2m
International Association for Cryptologic Research (IACR)
1 High Performance Architecture for Elliptic Curve Scalar Multiplication over GF(2m ) Junjie Jiang, Jing Chen, Jian Wang, Duncan S. Wong, and Xiaotie Deng Abstract We propose a new architecture for performing Elliptic Curve Scalar Multiplication (ECSM) on elliptic curves over GF(2m ). This architecture
STORAGE-YIELD CURVES WITH INFLOWS FROM A DIVERSION PIERLUIGI CLAPS
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
Potential energy curves for NO+ D. L. Albritton and A. L. Schmeltekopf
' potential energy curves that are based on the best current experimental and theo- retical knowledgePotential energy curves for NO+ D. L. Albritton and A. L. Schmeltekopf Aeronomy Laboratory. NOAA of the electronic structure of the NO+ ion. Based on these results. new potential energy curves for the electronic
Ris-R-Report Multi-MW wind turbine power curve
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
The Geometric Invariants of Null Cartan Curves Under The Similarity Transformations
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.
Recursive tilings and space-filling curves with little fragmentation Herman Haverkort, TU Eindhoven
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
Jacobi Quartic Curves Revisited Huseyin Hisil, Kenneth Koon-Ho Wong, Gary Carter, Ed Dawson
International Association for Cryptologic Research (IACR)
Jacobi Quartic Curves Revisited Huseyin Hisil, Kenneth Koon-Ho Wong, Gary Carter, Ed Dawson. Abstract This paper provides new results about efficient arithmetic on (extended) Jacobi quartic form elliptic curves y2 = dx4 + 2ax2 + 1. Recent works have shown that arithmetic on an elliptic curve in Jacobi
Number of Jacobi quartic curves over finite Rongquan Feng 1 , Hongfeng Wu 2
International Association for Cryptologic Research (IACR)
Number of Jacobi quartic curves over finite fields #3; Rongquan Feng 1 , Hongfeng Wu 2 1 LMAM@gmail.com Abstract In this paper the number of F q isomorphism classes of Jacobi quar tic curves, i.e., the number of Jacobi quartic curves with distinct j invariants, over finite field F q is enumerated. Keywords
Bolometric Light Curves of Type Ia Supernovae G. Contardo 1;2 , B. Leibundgut 1
Leibundgut, Bruno
Bolometric Light Curves of Type Ia Supernovae G. Contardo 1;2 , B. Leibundgut 1 1 European Southern, KarlSchwarzschildStraße 1, D85748 Garch ing, Germany 1.1 Light Curves of Type Ia Supernovae Substantial information about the processes in supernovae is contained in their light curves. They track
WORKING PAPER N 2007 -12 Education inequalities and the Kuznets curves
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
Green's Conjecture for curves on arbitrary K3 Marian Aprodu and Gavril Farkas
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
THE GREEN CONJECTURE FOR EXCEPTIONAL CURVES ON A K3 SURFACE
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
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
Ferrari, Raffaele
-0230, USA, sgille@ucsd.edu: (9) Department of Mechanical and Aerospace Engineering, Arizona State University]. At present a constellation of flying satellite missions routinely provides sea level anomaly, sea winds, sea tracks [2] with wide gaps in between. Fortuitously computing power kept pace allowing basin scale
Rodier, Caroline J.; Shaheen, Susan
2007-01-01T23:59:59.000Z
Dealing with Truck Parking Demands. National CooperativeAdequacy of Commercial Truck Parking Facilities – TechnicalAdequacy of Commercial Truck Parking Facilities – Technical
Shaheen, Susan; Rodier, Caroline J.
2007-01-01T23:59:59.000Z
Drivers’ response to parking guidance and informationAdequacy of Commercial Truck Parking Facilities – TechnicalPartners for Adequate Parking Facilities Initiative Final
Optimal Monetary Policy with a Convex Phillips Curve
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...
A possible explanation of the phase diagram of cuprate superconductors
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.
Is violation of Newton's second law possible?
A. Yu. Ignatiev
2007-03-11T23:59:59.000Z
Astrophysical observations (usually explained by dark matter) suggest that classical mechanics could break down when the acceleration becomes extremely small (the approach known as modified Newtonian dynamics, or MOND). I present the first analysis of MOND manifestations in terrestrial (rather than astrophysical) settings. A new effect is reported: around each equinox date, 2 spots emerge on the Earth where static bodies experience spontaneous acceleration due to the possible violation of Newton's second law. Preliminary estimates indicate that an experimental search for this effect can be feasible.
Best Possible Strategy for Finding Ground States
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.
Ab initio curved-wave x-ray-absorption fine structure
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.
Technology Application Centers: Facilitating Technology Transfer
Kuhel, G. J.
Industrial DSM programs cannot succeed unless customers learn about and implement new technologies in a timely manner. Why? Because this expeditious transfer of new technologies represents the key challenge for the 1990s. This paper explores...
PAVEMENT TECHNOLOGY UPDATE This Technology Transfer Program
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
Geometrically controlled snapping transitions in shells with curved creases
Nakul P. Bende; Arthur A. Evans; Sarah Innes-Gold; Luis A. Marin; Itai Cohen; Ryan C. Hayward; Christian D. Santangelo
2014-10-26T23:59:59.000Z
Curvature and mechanics are intimately connected for thin materials, and this coupling between geometry and physical properties is readily seen in folded structures from intestinal villi and pollen grains, to wrinkled membranes and programmable metamaterials. While the well-known rules and mechanisms behind folding a flat surface have been used to create deployable structures and shape transformable materials, folding of curved shells is still not fundamentally understood. Curved shells naturally deform by simultaneously bending and stretching, and while this coupling gives them great stability for engineering applications, it makes folding a surface of arbitrary curvature a non-trivial task. Here we discuss the geometry of folding a creased shell, and demonstrate theoretically the conditions under which it may fold continuously. When these conditions are violated we show, using experiments and simulations, that shells undergo rapid snapping motion to fold from one stable configuration to another. Although material asymmetry is a proven mechanism for creating this bifurcation of stability, for the case of a creased shell, the inherent geometry itself serves as a barrier to folding. We discuss here how two fundamental geometric concepts, creases and curvature, combine to allow rapid transitions from one stable state to another. Independent of material system and length scale, the design rule that we introduce here explains how to generate snapping transitions in arbitrary surfaces, thus facilitating the creation of programmable multi-stable materials with fast actuation capabilities.
OBSERVATIONS OF DOPPLER BOOSTING IN KEPLER LIGHT CURVES
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.
Fields and fluids on curved non-relativistic spacetimes
Michael Geracie; Kartik Prabhu; Matthew M. Roberts
2015-09-23T23:59:59.000Z
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 we write down the most general theory of dissipative fluids consistent with the second law in curved non-relativistic geometries and find significant differences in the allowed transport coefficients from those found previously. Kubo formulas for all response coefficients are presented. 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 relation to non-relativistic limits may be found in a companion paper [arXiv:1503.02682].
Linearly resummed hydrodynamics in a weakly curved spacetime
Yanyan Bu; Michael Lublinsky
2015-02-27T23:59:59.000Z
We extend our study of all-order linearly resummed hydrodynamics in a flat space~\\cite{1406.7222,1409.3095} to fluids in weakly curved spaces. The underlying microscopic theory is a finite temperature $\\mathcal{N}=4$ super-Yang-Mills theory at strong coupling. The AdS/CFT correspondence relates black brane solutions of the Einstein gravity in asymptotically \\emph{locally} $\\textrm{AdS}_5$ geometry to relativistic conformal fluids in a weakly curved 4D background. To linear order in the amplitude of hydrodynamic variables and metric perturbations, the fluid's energy-momentum tensor is computed with derivatives of both the fluid velocity and background metric resummed to all orders. We extensively discuss the meaning of all order hydrodynamics by expressing it in terms of the memory function formalism, which is also suitable for practical simulations. In addition to two viscosity functions discussed at length in refs.~\\cite{1406.7222,1409.3095}, we find four curvature induced structures coupled to the fluid via new transport coefficient functions. In ref.~\\cite{0905.4069}, the latter were referred to as gravitational susceptibilities of the fluid. We analytically compute these coefficients in the hydrodynamic limit, and then numerically up to large values of momenta.
Broadband turbulent spectra in gamma-ray burst light curves
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.
Incorporation of learning curve costs in acquisition strategy optimization
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.
Adsorption of annealed branched polymers on curved surfaces
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...
Averaged null energy condition and quantum inequalities in curved spacetime
Eleni-Alexandra Kontou
2015-07-22T23:59:59.000Z
The Averaged Null Energy Condition (ANEC) states that the integral along a complete null geodesic of the projection of the stress-energy tensor onto the tangent vector to the geodesic cannot be negative. ANEC can be used to rule out spacetimes with exotic phenomena, such as closed timelike curves, superluminal travel and wormholes. We prove that ANEC is obeyed by a minimally-coupled, free quantum scalar field on any achronal null geodesic (not two points can be connected with a timelike curve) surrounded by a tubular neighborhood whose curvature is produced by a classical source. To prove ANEC we use a null-projected quantum inequality, which provides constraints on how negative the weighted average of the renormalized stress-energy tensor of a quantum field can be. Starting with a general result of Fewster and Smith, we first derive a timelike projected quantum inequality for a minimally-coupled scalar field on flat spacetime with a background potential. Using that result we proceed to find the bound of a quantum inequality on a geodesic in a spacetime with small curvature, working to first order in the Ricci tensor and its derivatives. The last step is to derive a bound for the null-projected quantum inequality on a general timelike path. Finally we use that result to prove achronal ANEC in spacetimes with small curvature.
Averaged null energy condition and quantum inequalities in curved spacetime
Kontou, Eleni-Alexandra
2015-01-01T23:59:59.000Z
The Averaged Null Energy Condition (ANEC) states that the integral along a complete null geodesic of the projection of the stress-energy tensor onto the tangent vector to the geodesic cannot be negative. ANEC can be used to rule out spacetimes with exotic phenomena, such as closed timelike curves, superluminal travel and wormholes. We prove that ANEC is obeyed by a minimally-coupled, free quantum scalar field on any achronal null geodesic (not two points can be connected with a timelike curve) surrounded by a tubular neighborhood whose curvature is produced by a classical source. To prove ANEC we use a null-projected quantum inequality, which provides constraints on how negative the weighted average of the renormalized stress-energy tensor of a quantum field can be. Starting with a general result of Fewster and Smith, we first derive a timelike projected quantum inequality for a minimally-coupled scalar field on flat spacetime with a background potential. Using that result we proceed to find the bound of a qu...
On the Nuclear Rotation Curve of M31
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.
Light curves from supernova shock breakout through an extended wind
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.
Technology & Engineering Division
Technology & Engineering Division High-Temperature Superconducting Magnets for Fusion: New & Engineering Division Contents · Background on Superconductivity · Fusion Magnets Present and Future Vision/15/2014 2Joseph V. Minervini #12;Technology & Engineering Division Superconductivity #12;Technology
Possible textures of the fermion mass matrices
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.
Possible textures of the fermion mass matrices
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.
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...
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...
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).
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...
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...
Broader source: Energy.gov [DOE]
The Federal Energy Management Program (FEMP) provides information about energy-efficient products, renewable energy technologies and technology deployment to help agencies meet federal laws and requirements.
Hydropower Program Technology Overview
Not Available
2001-10-01T23:59:59.000Z
New fact sheets for the DOE Office of Power Technologies (OPT) that provide technology overviews, description of DOE programs, and market potential for each OPT program area.
Morgantown Energy Technology Center, technology summary
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.
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
Learning or Lock-in: Optimal Technology Policies to Support Mitigation$
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
Technology Licensing | ornl.gov
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
License ORNL Technologies Licensing Guidelines NDA(s) and MTA(s) Sample Agreements Technology Innovation Program Technology Assistance Program Licensing Staff Technology Search...
2009 Wind Technologies Market Report
Wiser, Ryan
2010-01-01T23:59:59.000Z
land- based wind energy technology. 2009 Wind TechnologiesRenewable Energy 2009 WIND TECHNOLOGIES MARKET REPORT AUGUSTfor a variety of energy technologies, including wind energy.
Johnson Jr.,, Ray
Training & Technology Solutions Queens College ~ Office of Information Technology ~ Training & Technology Solutions Queens College ~ Office of Information Technology ~ Training & Technology Solutions 718 & Technology Solutions 718-997-4875 ~ training@qc.cuny.edu ~ I-Bldg 214 Faculty Center Verification
Biodetection Technologies for First Responders: 2014 Edition
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.
Fractal Diffusion in Smooth Dynamical Systems with Virtual Invariant Curves
B. V. Chirikov; V. V. Vecheslavov
2002-02-06T23:59:59.000Z
Preliminary results of extensive numerical experiments on a simple model specified by the smooth canonical strongly chaotic 2D-map with global virtual invariant curves (VICs) are presented and discussed. We focus on the statistics of the diffusion rate of individual trajectories in dependence on the model parameters. Our previous conjecture about the fractal statistics determined by the critical structure of both the phase space and the motion is confirmed and studied in some detail. Particularly, we have found specific characteristics of what we termed the VIC diffusion suppression which is related to a new type of the critical structure. An example of ergodic motion with a surprising "hidden" critical structure strongly affecting the diffusion rate was also encountered and discussed.
Fields and fluids on curved non-relativistic spacetimes
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...
A Table of Areas Under Disease Progress Curves.
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...
Periodic relativity: deflection of light, acceleration, rotation curves
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.
Spinless Aharonov-Bohm problem in curved space
Edilberto O. Silva; Sérgio C. Ulhoa; Fabiano M. Andrade; Cleverson Filgueiras; R. G. G. Amorin
2015-02-25T23:59:59.000Z
The dynamics of a spinless charged particle under the influence of a magnetic field in curved space is considered. We chose the surface as being a cone defined by a line element in polar coordinates. The geometry of this line element establishes that the motion of the particle can occur on the surface of a cone or an anti-cone. As a consequence of the nontrivial topology of the cone and also because of two-dimensional confinement, the geometric potential should be taken into account. At first, we establish the conditions for the particle describing a circular path in such a context. Because of the presence of the geometric potential, which contains a singular term, we use the self-adjoint extension method in order to describe the dynamics in all space including the singularity. Expressions are obtained for the bound state energies and wave functions.
Quantum field theory in spaces with closed timelike curves
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.
Relativistic scaling laws for the light curve in supernovae
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.
Curved track segment finding using Tiny Triplet Finder (TTF)
Wu, Jin-Yuan; Wang, M.; Gottschalk, E.; Shi, Z.; /Fermilab
2006-11-01T23:59:59.000Z
We describe the applications of a track segment recognition scheme called the Tiny Triplet Finder (TTF) that involves the grouping of three hits satisfying a constraint forming of a track segment. The TTF was originally developed solving straight track segment finding problem, however, it is also suitable in many curved track segment finding problems. The examples discussed in this document are among popular detector layouts in high-energy/nuclear physics experiments. Although it is not practical to find a universal recipe for arbitrary detector layouts, the method of the TTF application is illustrated via the discussion of the examples. Generally speaking, whenever the data item to be found in a pattern recognition problem contains two free parameters, and if the constraint connecting the measurements and the two free parameters has an approximate shift invariant property, the Tiny Triplet Finder can be used.
Quantum fields and entanglement on a curved lightfront
Illan Halpern; Yasha Neiman
2015-07-15T23:59:59.000Z
We consider field quantization on an arbitrary null hypersurface in curved spacetime. We discuss the de Sitter horizon as the simplest example, relating the horizon quantization to the standard Fock space in the cosmological patch. We stress the universality of null-hypersurface kinematics, using it to generalize the Unruh effect to vacuum or thermal states with respect to null "time translations" on arbitrary (e.g. non-stationary) horizons. Finally, we consider a general pure state on a null hypersurface, which is divided into past and future halves, as when a bifurcation surface divides an event horizon. We present a closed-form recipe for reducing such a pure state into a mixed state on each half-hypersurface. This provides a framework for describing entanglement between spacetime regions directly in terms of their causal horizons. To illustrate our state-reduction recipe, we use it to derive the Unruh effect.
Quantum fields and entanglement on a curved lightfront
Halpern, Illan
2015-01-01T23:59:59.000Z
We consider field quantization on an arbitrary null hypersurface in curved spacetime. We discuss the de Sitter horizon as the simplest example, relating the horizon quantization to the standard Fock space in the cosmological patch. We stress the universality of null-hypersurface kinematics, using it to generalize the Unruh effect to vacuum or thermal states with respect to null "time translations" on arbitrary (e.g. non-stationary) horizons. Finally, we consider a general pure state on a null hypersurface, which is divided into past and future halves, as when a bifurcation surface divides an event horizon. We present a closed-form recipe for reducing such a pure state into a mixed state on each half-hypersurface. This provides a framework for describing entanglement between spacetime regions directly in terms of their causal horizons. To illustrate our state-reduction recipe, we use it to derive the Unruh effect.
Enhanced carbon-oxygen log interpretations using supplemental log curves
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.
Photon Green Functions in Curved Space-Time
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.
Production data analysis type curves for the Devonian Shales
Hazlett, William Gregory
1985-01-01T23:59:59.000Z
AILVlhWhO SS31NOISN3WIO 13 O I O i o / I ai ftt ! O o L O D E/I cU L 4) O O Ol 0 4- O V Gl Ld O O O CV O IO O cia& & e, a0 14 parameter. Therefor e, a "family" of type curves for three different values of w(0. 1. 0. 001, 0.... 6yo4 5 g Q 0 ICI 0 0 0 Cl Cl G. O O- l 4!II o Os I/I ICJ Cl X c !11 C rt! CO aP !11 C g U! U 0 ~ 11 CO ~~ s Z Lal )e 0 01- C 0 6 (U ) 4 Cl 4 I!1 UJ CI 004 ~ ~ 0 OI 0 IO 0 0 44/ i40' 3WIL SS31NOISN3WIO /NOIL?IOOHd 3...
Graphene: QFT in curved spacetimes close to experiments
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.
Distinguishing magnetic particle size of iron oxide nanoparticles with first-order reversal curves
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.
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.
Science &Technology Facilities Council
Science &Technology Facilities Council Accelerator Science and Technology Centre Daresbury Science)1235 445808 www.stfc.ac.uk/astec Head office, Science and Technology Facilities Council, Polaris House, North &Technology Facilities Council #12;The Council does not accept responsibility for loss or damage arising from
TOKYO INSTITUTE OF TECHNOLOGY 2005 TOKYO INSTITUTE OF TECHNOLOGY 152-8550 2 12 1 E3-3 2005 8 TEL. 03 5734 2975 URL. http://www.titech.ac.jp/ PROFILE #12;TOKYO INSTITUTE OF TECHNOLOGY 0201 CONTENTS 03 06 06 08 09 10 15 17 25 31 33 37 41 0201 #12;TOKYO INSTITUTE OF TECHNOLOGY TOKYO INSTITUTE
SPACE TECHNOLOGY Actual Estimate
technology readiness of new missions, mitigate their technological risks, improve the quality of cost estimates, and thereby contribute to better overall mission cost management..." Space Technology investmentsSPACE TECHNOLOGY TECH-1 Actual Estimate Budget Authority (in $ millions) FY 2011 FY 2012 FY 2013 FY
Predictive Maintenance Technologies
Broader source: Energy.gov [DOE]
Several diagnostic technologies and best practices are available to assist Federal agencies with predictive maintenance programs.
Reexamination of quantum bit commitment: The possible and the impossible
D'Ariano, Giacomo Mauro [Quantum Information Theory Group, Dipartimento di Fisica A. Volta, Universita di Pavia, via Bassi 6, 27100 Pavia (Italy); Kretschmann, Dennis [Centre for Quantum Computation, DAMTP, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Institut fuer Mathematische Physik, Technische Universitaet Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig (Germany); Schlingemann, Dirk [Institut fuer Mathematische Physik, Technische Universitaet Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig (Germany); ISI Foundation, Quantum Information Theory Unit, Viale S. Severo 65, 10133 Turin (Italy); Werner, Reinhard F. [Institut fuer Mathematische Physik, Technische Universitaet Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig (Germany)
2007-09-15T23:59:59.000Z
Bit commitment protocols whose security is based on the laws of quantum mechanics alone are generally held to be impossible. We give a strengthened and explicit proof of this result. We extend its scope to a much larger variety of protocols, which may have an arbitrary number of rounds, in which both classical and quantum information is exchanged, and which may include aborts and resets. Moreover, we do not consider the receiver to be bound to a fixed 'honest' strategy, so that 'anonymous state protocols', which were recently suggested as a possible way to beat the known no-go results, are also covered. We show that any concealing protocol allows the sender to find a cheating strategy, which is universal in the sense that it works against any strategy of the receiver. Moreover, if the concealing property holds only approximately, the cheat goes undetected with a high probability, which we explicitly estimate. The proof uses an explicit formalization of general two-party protocols, which is applicable to more general situations, and an estimate about the continuity of the Stinespring dilation of a general quantum channel. The result also provides a natural characterization of protocols that fall outside the standard setting of unlimited available technology and thus may allow secure bit commitment. We present such a protocol whose security, perhaps surprisingly, relies on decoherence in the receiver's laboratory.
Soil washing technology evaluation
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.
Is It Possible to Predict Strong Earthquakes?
Yuriy S. Polyakov; Gennadiy V. Ryabinin; Anna B. Solovyeva; Serge F. Timashev
2014-07-04T23:59:59.000Z
The possibility of earthquake prediction is one of the key open questions in modern geophysics. We propose an approach based on the analysis of common short-term candidate precursors (2 weeks to 3 months prior to strong earthquake) with the subsequent processing of brain activity signals generated in specific types of rats (kept in laboratory settings) who reportedly sense an impending earthquake few days prior to the event. We illustrate the identification of short-term precursors using the groundwater sodium-ion concentration data in the time frame from 2010 to 2014 (a major earthquake occurred on February 28, 2013), recorded at two different sites in the south-eastern part of the Kamchatka peninsula, Russia. The candidate precursors are observed as synchronized peaks in the nonstationarity factors, introduced within the flicker-noise spectroscopy framework for signal processing, for the high-frequency component of both time series. These peaks correspond to the local reorganizations of the underlying geophysical system that are believed to precede strong earthquakes. The rodent brain activity signals are selected as potential "immediate" (up to 2 weeks) deterministic precursors due to the recent scientific reports confirming that rodents sense imminent earthquakes and the population-genetic model of Kirshvink (2000) showing how a reliable genetic seismic escape response system may have developed over the period of several hundred million years in certain animals. The use of brain activity signals, such as electroencephalograms, in contrast to conventional abnormal animal behavior observations, enables one to apply the standard "input-sensor-response" approach to determine what input signals trigger specific seismic escape brain activity responses
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...
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...
Pulse Energy Typical Curve Validation Draft December 15, 2011
-based energy information system (EIS) software for commercial buildings. One distinguishing aspect of the Pulse, and the staff selected for this project provide particularly relevant expertise in continuous energy management processes, technologies for building energy performance monitoring, smart buildings, ongoing commissioning
Technology in water conservation
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...
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...
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...
Sandia Energy - Marine Hydrokinetics Technology: Technology Developmen...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
and manufacturing to assist industry in bringing efficient technologies to market. Wave Energy System Design and Modeling The amount of energy captured and converted by a...
Building Technologies Office Window and Envelope Technologies...
Inadequate codes and code enforcement Lack of information for consumers 12 Windows Roadmap Targets: Energy Savings 13 Windows Roadmap Targets: Payback 14 Technology 2025 Cost...
Another algebraic variational principle for the spectral curve of matrix models
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".
An evaluation of alternative horizontal curve design approaches for rural two-lane highways
Voigt, Anthony Paul
1995-01-01T23:59:59.000Z
STATEMENT It has been recognized that accidents are more likely to occur on horizontal curves than on tangent sections of rural two-lane highways. Previous studies have found that accident &equency and severity are greater on the curve sections of rural... Distance L v a Case 2 Distance r- c a' C Case 3 Distance FIGURE 2. Speed Profile Model Cases (4). 16 Superelevation Deficiency Thete have been several ellbrts to determine relationships among accident rates on horizontal curves and independent...
CAMPUS INFORMATION TECHNOLOGY PLAN COMMITTEE PROPOSED APPROACH
Pittendrigh, Barry
CAMPUS INFORMATION TECHNOLOGY PLAN COMMITTEE PROPOSED APPROACH Primary Tasks 1) Develop. with the possibility of beginning implementation in the near-term. c. Collect ideas and formalize list of areas with the Sustaining New Synergies Task Force i. IT initiatives generating energy savings ii. IT equipment and services
ON THE INERTIA GROUP OF ELLIPTIC CURVES IN THE CREMONA GROUP OF THE PLANE
Blanc, JÃ©rÃ©my
-Be], [dFe], [BeB], and [Bla]). In the case where K = C, the inertia groups of curves of geometric genus 2
A Tunable Hemispherical Platform for Non-Stretching Curved Flexible Electronics and Optoelectronics
Ju, Y. Sungtaek
2014-01-01T23:59:59.000Z
Stretching Curved Flexible Electronics and Optoelectronicsin incorporating flexible electronics or optoelectronics onin so-called flexible electronics and optoelectronics for a
5d $E_n$ Seiberg-Witten curve via toric-like diagram
Sung-Soo Kim; Futoshi Yagi
2015-06-16T23:59:59.000Z
We consider 5d Sp(1) gauge theory with $E_{N_f+1}$ global symmetries based on toric(-like) diagram constructed from (p,q)-web with 7-branes. We propose a systematic procedure to compute the Seiberg-Witten curve for generic toric-like diagram. For $N_f=6,7$ flavors, we explicitly compute the Seiberg-Witten curves for 5d Sp(1) gauge theory, and show that these Seiberg-Witten curves agree with already known $E_{7,8}$ results. We also discuss a generalization of the Seiberg-Witten curve to rank-N cases.
Timescale stretch parameterization of Type Ia supernova B-band light curves
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:
Use of experience curves to estimate the future cost of power plants with CO2 capture
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.
Development of a Discharge-Stage Rating Curve for Strawberry Creek
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
Possible features of galactic halo with electric field and observational constraints
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.
Use of experience curves to estimate the future cost of power plants with CO2 capture
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
Nuclear electric propulsion for planetary science missions: NASA technology program planning
Doherty, M.P. (NASA Lewis Research Center, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States))
1993-01-10T23:59:59.000Z
This paper presents the status of technology program planning to achieve readiness of Nuclear Electric Propulsion technologies needed to meet the advanced propulsion system requirements for planetary science missions in the next century. The technology program planning is based upon technologies of significant maturity: ion electric propulsion and the SP-100 space nulcear power technologies. Detailed plans are presented herein for the required ion electric propulsion technology development and demonstration. Closer coordination between space nuclear power and space electric propulsion technology programs is a necessity as technology plans are being further refined in light of NEP concept definition and possible early NEP flight activities.
Nuclear electric propulsion for planetary science missions: NASA technology program planning
Doherty, M.P.
1993-05-01T23:59:59.000Z
This paper presents the status of technology program planning to develop those Nuclear Electric Propulsion technologies needed to meet the advanced propulsion system requirements for planetary science missions in the next century. The technology program planning is based upon technologies with significant development heritage: ion electric propulsion and the SP-100 space nuclear power technologies. Detailed plans are presented for the required ion electric propulsion technology development and demonstration. Closer coordination between space nuclear power and space electric propulsion technology programs is a necessity as technology plans are being further refined in light of NEP concept definition and possible early NEP flight activities.
SHARED TECHNOLOGY TRANSFER PROGRAM
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.
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
Assessing Software Engineering Technology Transfer
Zelkowitz, Marvin V.
, and technology infusion, or the adoption of a new technology by an individual organization. 1 #12;Table ¢ ¡ £ ¡ ¢ ¡ ¡ ¢ ¡ ¡ ¡ ¢ ¡ £ ¤ £ ¡ ¡ ¢ ¡ ¡ ¢ ¡ ¡ £ ¤ £ ¡ ¢ ¡ ¡ ¡ ¢ ¡ ¡ ¢ ¡ £ ¡ ¢ 15 3.4 Exporting and Infusing Technology ¡ ¡ ¡ ¢ ¡ £ ¤ £ ¡ ¡ ¢ ¡ ¡ ¢ ¡ ¡ £ ¤ £ ¡ ¢ ¡ ¡ ¡ ¢ ¡ ¡ ¢ ¡ £ ¡ ¢ 16 4 Infusion of Technology 18 4.1 Technologies of Interest
The Global Energy Challenge and Possible Solu6ons
Rubloff, Gary W.
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 EtOH Oil Sands (Mining) Oil Sands (In-situ) GTL CTL Corn EtOH Million Barrels
A DISTRIBUTION WITH GIVEN MARGINALS AND GIVEN REGRESSION CURVE
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
Spectroscopic constants and potential energy curves of tungsten carbide
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.
Simultaneous emergence of curved spacetime and quantum mechanics
S S De; F Rahaman
2014-12-10T23:59:59.000Z
It is shown in this paper that the geometrically structureless spacetime manifold is converted instantaneously to a curved one, the Riemannian or may be a Finslerian spacetime with an associated Riemannian spacetime, on the appearance of quantum Weyl spinors dependent only on time in that background flat manifold and having the sympleic property in the abstract space of spinors. The scenario depicts simultaneous emergence of the gravity in accord with general relativity and quantum mechanics.The emergent gravity leads to the generalized uncertainty principle, which in turn, ushers in discrete space time. The emerged space time is specified here as to be Finslerian and the field equation in that space time has been obtained from the classical one due to the arising quantized space and time. From this field equation we find the quantum field equation for highly massive (of the Planck order) spinors in the associated Riemannian space of the Finsler space, which is in fact, the background FRW space time of the universe.These highly massive spinors provide the mass distribution complying Einstein equivalence principle. All these occurred in the indivisible minimum time considered as zero time or spontaneity.
Noncommutative Gravity and Quantum Field Theory on Noncommutative Curved Spacetimes
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.
A Superstring Theory in Four Curved Space-Time Dimensions
I. Bars; K. Sfetsos
1991-11-20T23:59:59.000Z
Neveu-Schwarz-Ramond type heterotic and type-II superstrings in four dimensional curved space-time are constructed as exact $N=1$ superconformal theories. The tachyon is eliminated with a GSO projection. The theory is based on the N=1 superconformal gauged WZW model for the anti-de Sitter coset $SO(3,2)/SO(3,1)$ with integer central extension $k=5$. The model has dynamical duality properties in its space-time metric that are similar to the large-small ($R\\rightarrow 1/R$) duality of tori. To first order in a $1/k$ expansion we give expressions for the metric, the dilaton, the Ricci tensor and their dual generalizations. The curvature scalar has several singularities at various locations in the 4-dimensional manifold. This provides a new singular solution to Einstein's equations in the presence of matter in four dimensions. A non-trivial path integral measure which we conjectured in previous work for gauged WZW models is verified.
A Table of Areas Under Disease Progress Curves.
Johnson, Dennis A.; Wilcoxson, Roy D.
1980-01-01T23:59:59.000Z
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 n I n t r o d... u c t i o n D i s e a s e p r o g r e s s c u r v e s i 1 1 ~ ~ s t r a t e e p i d e m i c s and r e f 1 ect t h e e f f e c t s o f t h e s e v e r a l f a c t o r s t h a t lence t h e deve lopmen t o f d i s e a s e...
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...
Network technology for depot modernization
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)
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
UNIVERSITY of STRATHCLYDE TECHNOLOGY &
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
Technology Deployment Case Studies
Broader source: Energy.gov [DOE]
Find technology deployment case studies below. Click on each individual project link to see the full case study. You can also view a map of technology deployment case studies.
Utilities Inspection Technologies
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...
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.
Science and technology for industrial ecology
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.
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
Measuring PV System Series Resistance Without Full IV Curves Joshua S. Stein1
Measuring PV System Series Resistance Without Full IV Curves Joshua S. Stein1 , Shawn McCaslin2 resistance of the PV module, string, or array that does not require measuring a full IV curve --photovoltaic cells, series resistance, predictive models, condition monitoring I. INTRODUCTION The series
Fig. 1. Variation of the slope post-peak stress-strain curve with confining pressure.
Joseph, Tim Grain
and surface mining. He has worked for The National Coal Board (U.K.), CANMET, Natural Resources Canada, Friction, Coal, Rock mechanics, Stress-strain curve. Paper reviewed and approved for publication is then applied to coal. Having determined the post-failure stress-strain curve for coal speci- mens
No-Go Theorem for Energy-Momentum Conservation in Curved Spacetime
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.
Seepage from a special class of a curved channel with drainage layer at shallow depth
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
0960-3174 #1997 Chapman & Hall On the shrinkage of local linear curve
Cheng, Ming-Yen
, Glasgow G12 8QW, UK Received December 1995 and accepted October 1996 Local linear curve estimators0960-3174 #1997 Chapman & Hall On the shrinkage of local linear curve estimators MING-YEN CHENG1, however. A common remedy is `ridging', which may be viewed as shrink- age of the local linear estimator
Abstract Title: Comprehensive assessment of peripheral arteries using multi-path curved planar
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
On the Static Diffie-Hellman Problem on Elliptic Curves over Extension Fields
International Association for Cryptologic Research (IACR)
On the Static Diffie-Hellman Problem on Elliptic Curves over Extension Fields Robert Granger Claude@computing.dcu.ie Abstract. We show that for any elliptic curve E(Fqn ), if an adversary has access to a Static Diffie-Hellman Problem (Static DHP) oracle, then by making O(q1- 1 n+1 ) Static DHP oracle queries during an initial
CS264: Beyond Worst-Case Analysis Lecture #14: Smoothed Analysis of Pareto Curves
Roughgarden, Tim
and generate a sequence of Pareto curves PC0, PC1, . . . , PCn, where PCi denotes the Pareto curve order of total weight, PCi+1 can be obtained from PCi by merging two sorted lists (PCi and a "shifted version" of PCi). A suitable implementation of this idea yields an algorithm running in time O( n i=0 |PCi
Twisted Jacobi Intersections Curves Rongquan Feng 1 , Menglong Nie 1 , Hongfeng Wu 2
International Association for Cryptologic Research (IACR)
Twisted Jacobi Intersections Curves Rongquan Feng 1 , Menglong Nie 1 , Hongfeng Wu 2 1 LMAM, School, whfmath@gmail.com Abstract In this paper, the twisted Jacobi intersections which contains Ja cobi points of order 2 is iso morphic to a twisted Jacobi intersections curve. Some fast explicit for mulae
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
A Limit-Curve Based Soft Finger god-object Algorithm Antonio Frisoli
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
A Probabilistic Graphical Approach to Computing Electricity Price Duration Curves under Price and
Oren, Shmuel S.
rates. But the liberalization of electricity markets and the in- creased commercial useA Probabilistic Graphical Approach to Computing Electricity Price Duration Curves under Price,oren}@ieor.berkeley.edu Abstract-- The electricity price duration curve (EPDC) repre- sents the probability distribution function
Motion of Spin 1/2 Massless Particle in a Curved Spacetime. I. Lagrangian Approach
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.
Motion of Spin 1/2 Massive Particle in a Curved Spacetime
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.
IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 23, NO. 3, AUGUST 2008 877 Electricity Price Curve Modeling
Huo, Xiaoming
IEEE 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 results using historical price data taken from the Eastern U.S. electric power markets. Index Terms--Electricity
Consumer Vehicle Technology Data
Broader source: Energy.gov [DOE]
2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting
Technology Integration Overview
Broader source: Energy.gov [DOE]
2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting
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.
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.
Sustained Availability of Technetium-99m - Possible Paths Forward
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.
Stoleriu, Laurentiu; Chakraborty, Pradip; Hauser, Andreas; Enachescu, Cristian
2015-01-01T23:59:59.000Z
The recently obtained spin-crossover nanoparticles are possible candidates for applications in the recording media industry as materials for data storage, or as pressure and temperature sensors. For these applications the intermolecular interactions and interactions between spin-crossover nanoparticles are extremely important, as they may be essential factors in triggering the transition between the two stable phases: the high-spin and low-spin ones. In order to find correlations between the distributions in size and interactions and the transition temperatures distribution, we apply the FORC (First Order Reversal Curves) method, using simulations based on a mechanoelastic model applied to 2D triangular lattices composed of molecules linked by springs and embedded in a surfactant. We consider two Gaussian distributions: one of the size of the nanoparticles and one of the elastic interactions between edge spin-crossover molecules and the surfactant molecules. In order to disentangle the kinetic and non-kinetic...
MHK Technologies/Oregon State University Columbia Power Technologies...
OSU Project(s) where this technology is utilized *MHK ProjectsOSU Direct Drive Power Generation Buoys Technology Resource Click here Wave Technology Type Click here...
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...
Vehicle Technologies Office: 2012 Fuel and Lubricant Technologies...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
2 Fuel and Lubricant Technologies R&D Annual Progress Report Vehicle Technologies Office: 2012 Fuel and Lubricant Technologies R&D Annual Progress Report The Fuel & Lubricant...
Technology Readiness Assessment (TRA)/Technology Maturation Plan...
(TRA)Technology Maturation Plan (TMP) Process Guide Technology Readiness Assessment (TRA)Technology Maturation Plan (TMP) Process Guide This document is a guide for those...
Does Doctrine Drive Technology or Does Technology Drive Doctrine?
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
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...
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...
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...
Characterization, Monitoring, and Sensor Technology Integrated Program (CMST-IP). Technology summary
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.
Web Technology (elective package)
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
PUBLICATIONS BRANCH OF TECHNOLOGY
INDEX of PUBLICATIONS by the BRANCH OF TECHNOLOGY BUREAU OF COMMERCIAL FISHERIES, 1955-59 Inclusive OF PUBLICATIONS BY THE BRANCH OF TECHNOLOGY BUREAU OF COMMERCIAL FISHERIES 1955-59 Inclusive by F. Bruce Sanford continue s, for the year s 1955- 59, the listing of publications by the Branch of Technology given
Responder Technology Alert Monthly
PNNL-24014 Responder Technology Alert Monthly (Oct-Nov 2014) January 2015 JF Upton SL Stein #12;#12;PNNL-24014 Responder Technology Alert Monthly (Oct-Nov 2014) JF Upton SL Stein January 2015 Prepared for the Department of Homeland Security Science and Technology Directorate under Contract HSHQPM-14-X-00058. Pacific
Technology Advertising Contact Information
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
University Libraries Technology Plan
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
SPAHN, OLGA B.; GROSSETETE, GRANT D.; CICH, MICHAEL J.; TIGGES, CHRIS P.; RENO, JOHN L.; PEAKE, GREGORY M.; KLEM, JOHN F.; LEAN, JEN; FULLER, CHARLES T.; BURKHART, JEFF; BAUER, THOMAS; SULLIVAN, CHARLES T.
2003-03-01T23:59:59.000Z
Many MEMS-based components require optical monitoring techniques using optoelectronic devices for converting mechanical position information into useful electronic signals. While the constituent piece-parts of such hybrid opto-MEMS components can be separately optimized, the resulting component performance, size, ruggedness and cost are substantially compromised due to assembly and packaging limitations. GaAs MOEMS offers the possibility of monolithically integrating high-performance optoelectronics with simple mechanical structures built in very low-stress epitaxial layers with a resulting component performance determined only by GaAs microfabrication technology limitations. GaAs MOEMS implicitly integrates the capability for radiation-hardened optical communications into the MEMS sensor or actuator component, a vital step towards rugged integrated autonomous microsystems that sense, act, and communicate. This project establishes a new foundational technology that monolithically combines GaAs optoelectronics with simple mechanics. Critical process issues addressed include selectivity, electrochemical characteristics, and anisotropy of the release chemistry, and post-release drying and coating processes. Several types of devices incorporating this novel technology are demonstrated.
2011 Wind Technologies Market Report
Bolinger, Mark
2013-01-01T23:59:59.000Z
land-based wind energy technology. 2011 Wind Technologiesfor a variety of energy technologies, including wind energy.Renewable Energy Laboratory’s National Wind Technology
2010 Wind Technologies Market Report
Wiser, Ryan
2012-01-01T23:59:59.000Z
land-based wind energy technology. 2010 Wind Technologiesfor a variety of energy technologies, including wind energy.2010 Wind Technologies Market Report Federal Energy
2012 Wind Technologies Market Report
Wiser, Ryan
2014-01-01T23:59:59.000Z
land-based wind energy technology. 2012 Wind Technologiesfor a variety of energy technologies, including wind energy.of Energy (DOE) Wind & Water Power Technology Office team
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...
A CONTAGIOUS DISEASE OF SALMON POSSIBLY OF VIRUS ORIGIN
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
'Self-absorbed' GeV light curves of gamma-ray burst afterglows
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.
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.
Graz University of Technology Institute for Software Technology
Graz University of Technology Institute for Software Technology Birgit Vogtenhuber Problem Analysis.054, 3 VU Birgit Vogtenhuber Institute for Software Technology Graz University of Technology email: bvogt of Technology Institute for Software Technology Birgit Vogtenhuber Problem Analysis and Complexity Theory, 716
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.
Image credit: Dreamstime Technology for
Image credit: Dreamstime Technology for research saves lives Technology developed to advance STFC in particle physics technology not only supported important experiments at CERN but pioneered early for particle physics applications. Now that technology is used extensively in superconducting magnets
Beyond Computation: Information Technology, Organizational
Beyond Computation: Information Technology, Organizational Transformation and Business Performance Brynjolfsson is Associate Professor of Information Technology and Management, Sloan School of Management. Information technology, defined as computers as well as related digital communication technology, has
Retrospective North American CFL Experience Curve Analysis and Correlation to Deployment Programs
Broader source: Energy.gov [DOE]
This work documents our development of an analysis approach for deriving retrospective experience curves with a variable learning rate, and its application to develop an experience curve for compact fluorescent lamps for the global and North American markets over the years 1990-2007. Uncertainties and assumptions involved in interpreting data for our experience curve development are discussed, including the processing and transformation of empirical data, the selection of system boundaries, and the identification of historical changes in the learning rate over the course of 15 years.
A new approach for magnetic curves in 3D Riemannian manifolds
Bozkurt, Zehra, E-mail: zbozkurt@ankara.edu.tr; Gök, Ismail, E-mail: igok@science.ankara.edu.tr; Yayl?, Yusuf, E-mail: yayli@science.ankara.edu.tr; Ekmekci, F. Nejat, E-mail: ekmekci@science.ankara.edu.tr [Department of Mathematics, Faculty of Science, University of Ankara, Ankara (Turkey)
2014-05-15T23:59:59.000Z
A magnetic field is defined by the property that its divergence is zero in a three-dimensional oriented Riemannian manifold. Each magnetic field generates a magnetic flow whose trajectories are curves called as magnetic curves. In this paper, we give a new variational approach to study the magnetic flow associated with the Killing magnetic field in a three-dimensional oriented Riemann manifold, (M{sup 3}, g). And then, we investigate the trajectories of the magnetic fields called as N-magnetic and B-magnetic curves.
Reactor Technology | Nuclear Science | ORNL
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Reactor Technology Advanced Reactor Concepts Advanced Instrumentation & Controls Light Water Reactor Sustainability Safety and Regulatory Technology Small Modular Reactors Nuclear...
Geothermal innovative technologies catalog
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.
Battery packaging - Technology review
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.
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.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
commercial customers. One of TEAM's newest projects is to manufacture the Stingray "water knife," a Sandia licensed technology. Highlighted in Time Magazine as one of the 50...
Geothermal Technologies Program Overview
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Analysis, Int'l and other Coproduction and other Low Temperature Ground Source Heat Pump Innovative Exploration Technology Geothermal Data Development, Collection Maintenance...
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,...
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.
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.
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.
Ocean Energy Technology Overview
None
2009-08-05T23:59:59.000Z
Introduction to and overview of ocean renewable energy resources and technologies prepared for the U.S. Department of Energy Federal Energy management Program.
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...
Arc Position Sensing Technology
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
(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 chemical and...
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.
Jacobson, C.
1982-05-31T23:59:59.000Z
Testimony by Lawrence J. Brady, Commerce Assistant Secretary for Trade Administration, at Congressional hearings on the national security issues of technology transfers to the Soviet Union identified steps the US needs to take to deal effectively with the problem. These steps include an understanding of how the Soviet Union has and will benefit militarily by acquiring Western technology and efforts to work with other countries, counterintelligence agencies, and industries to stem the flow of technological information. Brady outlined changes in technology development that complicate the enforcement of transfer rules, and emphasized the importance of a close relationship between the business community and the Commerce Department. (DCK)
Supervisory Information Technology Specialist
Broader source: Energy.gov [DOE]
A successful candidate in this position will be responsible for providing Information Technology (IT) infrastructure, capabilities and technical support to the Department of Energy (DOE),...
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...
Overview: STEEL Enabling Technologies
Broader source: Energy.gov [DOE]
Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.
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...
Autonomous Vehicles Have a Wide Range of Possible Energy Impacts (Poster)
Brown, A.; Repac, B.; Gonder, J.
2013-07-01T23:59:59.000Z
This poster presents initial estimates of the net energy impacts of automated vehicles (AVs). Automated vehicle technologies are increasingly recognized as having potential to decrease carbon dioxide emissions and petroleum consumption through mechanisms such as improved efficiency, better routing, lower traffic congestion, and by enabling advanced technologies. However, some effects of AVs could conceivably increase fuel consumption through possible effects such as longer distances traveled, increased use of transportation by underserved groups, and increased travel speeds. The net effect on petroleum use and climate change is still uncertain. To make an aggregate system estimate, we first collect best estimates for the energy impacts of approximately ten effects of AVs. We then use a modified Kaya Identity approach to estimate the range of aggregate effects and avoid double counting. We find that depending on numerous factors, there is a wide range of potential energy impacts. Adoption of automated personal or shared vehicles can lead to significant fuel savings but has potential for backfire.
Analysis of post-Kyoto CO? emissions trading using marginal abatement curves
Ellerman, A. Denny.; Decaux, Annelène.
Marginal abatement curves (MACs) are often used heuristically to demonstrate the advantages of emissions trading. In this paper, the authors derive MACs from EPPA, the MIT Joint Program's computable general equilibrium ...
Kalinin, Sergei V.; Balke, Nina; Borisevich, Albina Y.; Jesse, Stephen; Maksymovych, Petro; Kim, Yunseok; Strelcov, Evgheni
2014-06-10T23:59:59.000Z
An excitation voltage biases an ionic conducting material sample over a nanoscale grid. The bias sweeps a modulated voltage with increasing maximal amplitudes. A current response is measured at grid locations. Current response reversal curves are mapped over maximal amplitudes of the bias cycles. Reversal curves are averaged over the grid for each bias cycle and mapped over maximal bias amplitudes for each bias cycle. Average reversal curve areas are mapped over maximal amplitudes of the bias cycles. Thresholds are determined for onset and ending of electrochemical activity. A predetermined number of bias sweeps may vary in frequency where each sweep has a constant number of cycles and reversal response curves may indicate ionic diffusion kinetics.
Gamma-ray burst prompt emission light curves and power density spectra in the ICMART model
Zhang, Bo [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China); Zhang, Bing, E-mail: bozhang@physics.unlv.edu, E-mail: zhang@physics.unlv.edu [Department of Physics and Astronomy, University of Nevada Las Vegas, Las Vegas, NV 89154 (United States)
2014-02-20T23:59:59.000Z
In this paper, we simulate the prompt emission light curves of gamma-ray bursts (GRBs) within the framework of the Internal-Collision-induced MAgnetic Reconnection and Turbulence (ICMART) model. This model applies to GRBs with a moderately high magnetization parameter ? in the emission region. We show that this model can produce highly variable light curves with both fast and slow components. The rapid variability is caused by many locally Doppler-boosted mini-emitters due to turbulent magnetic reconnection in a moderately high ? flow. The runaway growth and subsequent depletion of these mini-emitters as a function of time define a broad slow component for each ICMART event. A GRB light curve is usually composed of multiple ICMART events that are fundamentally driven by the erratic GRB central engine activity. Allowing variations of the model parameters, one is able to reproduce a variety of light curves and the power density spectra as observed.
Measuring Type Ia Supernova Distances and Redshifts From Their Multi-band Light Curves
Kim, Alex G.; Miquel, Ramon
2007-01-01T23:59:59.000Z
curve, http://supernovae.in2p3.fr/ ? guy/salt/index.htmlfor large numbers of supernovae; so many that it would becosmology:distance scale, supernovae:general Introduction
QUIZ 2 (IN 10 MINUTES.) (1) Find the equation of integral curves of ...
2015-01-27T23:59:59.000Z
QUIZ 2 (IN 10 MINUTES.) (1) Find the equation of integral curves of dy dx. = x2 x2 + y2. + y x . (6 points). (2) A tank originally contains 200 gal of water with 100 ...
Angel Restrepo, Juan Alejandro
2000-01-01T23:59:59.000Z
This work introduces new type curve solutions for an unfractured well in an infinite-acting naturally fractured reservoir, including wellbore storage and skin effects. Both pseudosteady-state¹ and transient²?³ interporosity flow models are studied...
Spontaneously curving trajectory in Brownian motion of particle with broken symmetry
Nan Sheng; YuSong Tu; ZuoWei Wang; HaiPing Fang
2015-08-31T23:59:59.000Z
By molecular dynamics simulations, we observe that the trajectory of Brownian particle with asymmetrical structure shows a systematic curving toward an orientation-dependent direction during the Brownian motion, rather than a simple random walk. This systematic curving indicates that there is a spontaneous breaking of equal probability in Brownian motion owing to the asymmetrical structure of the particle. We find that the characteristic time for this systematic curving is ~10 ps for a particle with a length of 0.37 nm. Furthermore, we find that as the degree of the particle asymmetry increases, the ensemble-averaged velocity along the initial orientation shows higher peak value and the characteristic time for the systematic curving of the trajectory becomes longer. The finding is expected to be of essential importance in the understanding of the dynamic behavior of many physical, chemical and bio-systems at nanoscale and even microscale. It also provides insights into the design of nano- and microscale devices.
Angel Restrepo, Juan Alejandro
2000-01-01T23:59:59.000Z
. The objectives of this work are as follows: First, we generated new type curves for the analysis of pressure drawdown and buildup tests performed in naturally fractured reservoirs. Next, we develop a systematic approach for the analysis and interpretation...
Is a curved flight path in SAR better than a straight one?
Plamen Stefanov
2012-12-10T23:59:59.000Z
model of this is to project the curve on the plane, call it ?; then the data are integrals ..... projections to the base falls on ? (points right below the plane's path, i.e.,.
Shporer, Avi
2015-01-01T23:59:59.000Z
We identify 3 Kepler transiting planet systems, Kepler-7, Kepler-12, and Kepler-41, whose orbital phase-folded light curves are dominated by planetary atmospheric processes including thermal emission and reflected light, while the impact of non-atmospheric (i.e. gravitational) processes, including beaming (Doppler boosting) and tidal ellipsoidal distortion, is negligible. Therefore, those systems allow a direct view of their atmospheres without being hampered by the approximations used in the inclusion of both atmospheric and non-atmospheric processes when modeling the phase curve shape. Here we analyze Kepler-12b and Kepler-41b atmosphere based on their Kepler phase curve, while the analysis of Kepler-7b was presented elsewhere. The model we used efficiently computes reflection and thermal emission contributions to the phase curve, including inhomogeneous atmospheric reflection due to longitudinally varying cloud coverage. We confirm Kepler-12b and Kepler-41b show a westward phase shift between the brightest...
Surendranath, Yogesh
An artificial leaf can perform direct solar-to-fuels conversion. The construction of an efficient artificial leaf or other photovoltaic (PV)-photoelectrochemical device requires that the power curve of the PV material and ...
Multi-Factor Model of Correlated Commodity - Forward Curves for Crude Oil and Shipping Markets
Ellefsen, Per Einar
2009-01-01T23:59:59.000Z
An arbitrage free multi-factor model is developed of the correlated forward curves of the crude oil, gasoline, heating oil and tanker shipping markets. Futures contracts trading on public exchanges are used as the primary ...