Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies
Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.
2007-01-01
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.
2007-01-01
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
2007-01-01
2004) ‘Experience curves for power plant emission controlLtd. Experience curves for power plant emission controlInc. Experience curves for power plant emission control
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A
2007-01-01
1/2, 2004 Experience curves for power plant emission controlcoal-fired electric power plants. In particular, we focus on2004) ‘Experience curves for power plant emission control
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A
2007-01-01
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.
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R
2007-01-01
technologies applicable to power plant gas streams) and thecapacity of power plants whose flue gases are treated withat some power plants burning oil or natural gas, including
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
Forecasting technology costs via the Learning Curve - Myth or Magic?
Alberth, Stephan
Gas Turbine (CCGT) where data provided by Colpier was already converted from ‘costs per installed capacity’ to ‘costs per electricity produced’ (2002). The focus has been on technologies that remained in their growth stages in order to avoid... Electricity Usc(90)/kWh - TWh 1981 1997 15 3.6 Cleason Colpier 2002 Nuclear Instalation US$(90)/W - GW 1975 1993 19 2.0 Kouvaritakis et al. (2000) in M&S 2001 SCGT Instalation US$(90)/W - GW 1956 1981 14 8.9 IIASA-WEC (1998), p.50 Solar Production $/Wp - MWp...
Business Growth with Energy Reduction Made Possible Through Technology
Osifchin, N.
1983-01-01
methods and general accep tance. Small wind generators and photovoltaic systems have proven to be applicable for off power grid applications. The availability of 157 ESL-IE-83-04-24 Proceedings from the Fifth Industrial Energy Conservation Technology... organizational structure and administrative system (e.g., ENERGY 11) to manage the total system energy use and cost.) ? Third, there is a mounting level of energy awareness among operating company engineers who specify and purchase central office systems...
Technology Makes Solid State Multi-Gas Emission Monitoring Possible
Nelson, R. L.
1986-01-01
NEUTRAL BEAM GAS-FILTER CELL BEAM (al D~~~:_]IIl] '~05~~1, (bl lliill:~~:':_::JIIIII SO, 'N "ACFilter... 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...
Heinrich, Katie
2013-01-01
-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... 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...
A cost modeling approach using learning curves to study the evolution of technology
Kar, Ashish M. (Ashish Mohan)
2007-01-01
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
2014-01-01
N ATIONAL L ABORATORY Accounting for Technological Change inopportunity employer. Accounting for Technological Change inbest available techniques” for accounting for innovation in
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
2015-01-01
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...
Learning curves and engineering assessment of emerging energy technologies: onshore wind
Mukora, Audrey Etheline
2014-06-30
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.
2007-01-01
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.
1990-10-01
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.
Technical Change Theory and Learning Curves: Patterns of Progress in Energy Technologies
Jamasb, Tooraj
and offshore wind energy. The emerging technologies have existed for a relatively short time and have achieved a lesser degree of technical progress during the period under consideration. The estimated learning rates for thermal solar power and offshore wind... Elasticity Learning by Doing Research Elasticity Learning by Research Diffusion Year Var. Solar power – thermal Model-II -0.0320*** 2.2% -0.0779*** 5.3% - - - Wind energy – offshore Model-II -0.0151 1.0% -0.0720*** 4.9% - - Cap, Y...
An Analysis of Energy Savings Possible Through Advances in Automotive Tooling Technology
Rick Schmoyer, RLS
2004-12-03
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
2014-08-16
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.
Dark Matter as a Possible New Energy Source for Future Rocket Technology
Jia Liu
2009-10-09
Current rocket technology can not send the spaceship very far, because the amount of the chemical fuel it can take is limited. We try to use dark matter (DM) as fuel to solve this problem. In this work, we give an example of DM engine using dark matter annihilation products as propulsion. The acceleration is proportional to the velocity, which makes the velocity increase exponentially with time in non-relativistic region. The important points for the acceleration are how dense is the DM density and how large is the saturation region. The parameters of the spaceship may also have great influence on the results. We show that the (sub)halos can accelerate the spaceship to velocity $ 10^{- 5} c \\sim 10^{- 3} c$. Moreover, in case there is a central black hole in the halo, like the galactic center, the radius of the dense spike can be large enough to accelerate the spaceship close to the speed of light.
Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]
1997-03-28
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
2007-01-19
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.
Cowlin, S.; Cochran, J.; Cox, S.; Davison, C.; van der Gaast, Y.
2012-08-01
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.
Curved Space or Curved Vacuum?
Eric V. Linder
2005-10-11
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.
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
2005-11-28
The study of the number of photons leads to a new way of characterizing curves and to a novel integral invariant over curves.
Superfluids in Curved Spacetime
Villegas, Kristian Hauser A
2015-01-01
Superfluids under an intense gravitational field are typically found in neutron star and quark star cores. Most treatments of these superfluids, however, are done in a flat spacetime background. In this paper, the effect of spacetime curvature on superfluidity is investigated. An effective four-fermion interaction is derived by integrating out the mediating scalar field. The fermions interacting via the mediating gauge vector bosons is also discussed. Two possible cases are considered in the mean-field treatment: antifermion-fermion and fermion-fermion pairings. An effective action, quadratic in fermion field, and a self-consistent equation are derived for both cases. The effective Euclidean action and the matrix elements of the heat kernel operator, which are very useful in curved-spacetime QFT calculations, are derived for the fermion-fermion pairing. Finally, explicit numerical calculation of the gravitational correction to the pairing order parameter is performed for the scalar superfluid case. It is foun...
Examining CCS deployment potential in China via application of an integrated CCS cost curve
Dahowski, Robert T.; Davidson, Casie L.; Li, Xiaochun; Wei, Ning
2013-06-01
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
2014-08-18
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.
Luckow, Patrick; Wise, Marshall A.; Dooley, James J.
2011-04-18
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.
Superfluids in Curved Spacetime
Kristian Hauser A. Villegas
2015-11-07
Superfluids under an intense gravitational field are typically found in neutron star and quark star cores. Most treatments of these superfluids, however, are done in a flat spacetime background. In this paper, the effect of spacetime curvature on superfluidity is investigated. An effective four-fermion interaction is derived by integrating out the mediating scalar field. The fermions interacting via the mediating gauge vector bosons is also discussed. Two possible cases are considered in the mean-field treatment: antifermion-fermion and fermion-fermion pairings. An effective action, quadratic in fermion field, and a self-consistent equation are derived for both cases. The effective Euclidean action and the matrix elements of the heat kernel operator, which are very useful in curved-spacetime QFT calculations, are derived for the fermion-fermion pairing. Finally, explicit numerical calculation of the gravitational correction to the pairing order parameter is performed for the scalar superfluid case. It is found that, to first order correction, gravity enhances the superfluidity.
The marine biodiversity curve is an icon of paleobiology. The familiar curve shows
Waxman, David
the Mesozoic and Cenozoic. The curve also gives us often quoted magnitudes of mass extinctions and the relay owing to an increase in habitable area. To test this possibility, they compared the degree
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...
Thermal aspects in curved metrics
Giovanni Acquaviva
2013-01-15
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
1998-01-01
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 ...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar Fuel ProductionRecoverable15/2008Technologies Technologies
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnology /newsroom/_assets/images/s-icon.png Technology
Crowther, Paul
24 Appendix 2: List of UK Companies Engaged With Particle Physics Research The technological and engineers at universities and national centres with industry. Listed below are the UK companies or companies://www.tmd.co.uk Microwave tubes, high voltage power supplies, radar transmitters, RF testing. [c16] Outokumpo Holton Ltd
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
2006-12-16
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.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With U.S. CoalMexico IndependentMatter and Technologies R&D
Connecting curves for dynamical systems
R. Gilmore; Jean-Marc Ginoux; Timothy Jones; C. Letellier; U. S. Freitas
2010-03-08
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.
Lyon, Richard
2001-08-05
This paper presents a review of the Thermal DeNOx process with respect to its application to control of NOx emissions from diesel engines. The chemistry of the process is discussed first in empirical and then theoretical terms. Based on this discussion the possibilities of applying the process to controlling NOx emissions from diesel engines is considered. Two options are examined, modifying the requirements of the chemistry of the Thermal DeNOx process to suit the conditions provided by diesel engines and modifying the engines to provide the conditions required by the process chemistry. While the former examination did not reveal any promising opportunities, the latter did. Turbocharged diesel engine systems in which the turbocharger is a net producer of power seem capable of providing the conditions necessary for NOx reduction via the Thermal DeNOx reaction.
Adoption of Renewable Energy Technologies Under Uncertainty
Torani, Kiran
2014-01-01
of Carbon for Regulatory Impact Analysis. ” IEA. 2000. “Curves for Energy Technology Policy. ” IEA, Paris, France.IEA. 2003. “IEA Energy Technology R&D Statistics. ” IEA,
Technology Innovations and Experience Curves for Nitrogen Oxides Control Technologies
Yeh, Sonia; Rubin, Edward S.; Taylor, Margaret R.
2007-01-01
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.
2007-01-01
x Control. Volume 1: Utility Boiler Applications; ElectricCoal-Fired Electric Utility Boilers; J. Air & Waste Manage.for NO x Control on Coal-Fired Boilers; U.S. Environmen- tal
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunitiesofExtrans - Permeation Measurement2 0 thFATIGUE DESIGN CURVES
Sergey A. Cherkis
2007-03-11
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.
Twisted Ate Pairing on Hyperelliptic Curves and Applications
International Association for Cryptologic Research (IACR)
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
Twisted Ate Pairing on Hyperelliptic Curves and Applications
International Association for Cryptologic Research (IACR)
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
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...
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
Expansion of decline curve parameters for tight gas sands with massive hydraulic fractures
Schaefer, T.
1995-12-31
With the advances in modern hydrocarbon technology and expansion of geologic settings for development, it is necessary to make changes to the conventional wisdoms that accompany production technology. This paper discusses some possible changes that necessitate implementation as observed both empirically and analytically. Specifically it discusses the time at which a decline curve can be implemented for production forecasting, the need for a dual decline model, and the severity of the decline variable that may be used for this model. It is the point of this paper to prove that for fight gas sands with massive hydraulic fractures that it is not only feasible to use decline variables that are greater than the traditional limit of harmonic or 1.0, but that the decline curve may also be implemented in the transient flow period of the well and decline both hyperbolically and exponentially. These ideas were not only proven through field study, but were additionally modeled with a fracture flow simulator. In order to prove these points this paper first introduces the Red Fork Formation and the development of an initial field model curve for this formation. After the initial model was developed, questions arose as to its feasibility. These questions were first addressed with a literature survey and further comparisons were made to test the models accuracy using pressure decline analysis and a fracture flow simulator. All of these methods were used to justify the implementation of a decline exponent as high as 2.1 for a hyperbolic curve during the early transient flow period, and regressing this hyperbolic into an exponential decline in the pseudo-steady state period.
Ultimacy and alternative possibilities
Fischer, John Martin
2009-01-01
considerations about alternative possibilities and those9370-1 Ultimacy and alternative possibilities John Martinwe should separate issues of alternative possibilities from
Random Curves by Conformal Welding
K. Astala; P. Jones; A. Kupiainen; E. Saksman
2009-12-17
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
2009-01-01
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 $\\kappa<4$.
Dragon curves revisited S. Tabachnikov
Tabachnikov, Sergei
mathematical object of comparable beauty, the Dragon curves, whose theory was created by Chandler Davis. The goal of this article is to bring Dragon curves to spotlight again and to pay tribute to Chandler Davis that if you folded a $1 bill repeatedly he thought it would make a random walk or something like that. (We
Fourier duality of quantum curves
Martin Luu; Albert Schwarz
2015-04-07
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.
New National Wind Potential Estimates for Modern and Near-Future Turbine Technologies (Poster)
Roberts, J. O.
2014-01-01
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.
Student ENG 505 - Energy Technologies Systems and Applications...
Office of Scientific and Technical Information (OSTI)
Student ENG 505 - Energy Technologies Systems and Applications: Shale Gas Production Curve. Citation Details In-Document Search Title: Student ENG 505 - Energy Technologies Systems...
Caloric Curves and Nuclear Expansion
J. B. Natowitz; K. Hagel; Y. Ma; M. Murray; L. Qin; S. Shlomo; R. Wada; J. Wang
2002-08-08
Nuclear caloric curves have been analyzed using an expanding Fermi gas hypothesis to extract average nuclear densities. In this approach the observed flattening of the caloric curves reflects progressively increasing expansion with increasing excitation energy. This expansion results in a corresponding decrease in the density and Fermi energy of the excited system. For nuclei of medium to heavy mass apparent densities ~ 0.4 rho_0 are reached at the higher excitation energies.
Spherical nanoindentation stress–strain curves
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Pathak, Siddhartha; Kalidindi, Surya R.
2015-03-24
Although indentation experiments have long been used to measure the hardness and Young's modulus, the utility of this technique in analyzing the complete elastic–plastic response of materials under contact loading has only been realized in the past few years – mostly due to recent advances in testing equipment and analysis protocols. This paper provides a timely review of the recent progress made in this respect in extracting meaningful indentation stress–strain curves from the raw datasets measured in instrumented spherical nanoindentation experiments. These indentation stress–strain curves have produced highly reliable estimates of the indentation modulus and the indentation yield strength inmore »the sample, as well as certain aspects of their post-yield behavior, and have been critically validated through numerical simulations using finite element models as well as direct in situ scanning electron microscopy (SEM) measurements on micro-pillars. Much of this recent progress was made possible through the introduction of a new measure of indentation strain and the development of new protocols to locate the effective zero-point of initial contact between the indenter and the sample in the measured datasets. As a result, this has led to an important key advance in this field where it is now possible to reliably identify and analyze the initial loading segment in the indentation experiments.« less
Spherical nanoindentation stress–strain curves
Pathak, Siddhartha; Kalidindi, Surya R.
2015-03-24
Although indentation experiments have long been used to measure the hardness and Young's modulus, the utility of this technique in analyzing the complete elastic–plastic response of materials under contact loading has only been realized in the past few years – mostly due to recent advances in testing equipment and analysis protocols. This paper provides a timely review of the recent progress made in this respect in extracting meaningful indentation stress–strain curves from the raw datasets measured in instrumented spherical nanoindentation experiments. These indentation stress–strain curves have produced highly reliable estimates of the indentation modulus and the indentation yield strength in the sample, as well as certain aspects of their post-yield behavior, and have been critically validated through numerical simulations using finite element models as well as direct in situ scanning electron microscopy (SEM) measurements on micro-pillars. Much of this recent progress was made possible through the introduction of a new measure of indentation strain and the development of new protocols to locate the effective zero-point of initial contact between the indenter and the sample in the measured datasets. As a result, this has led to an important key advance in this field where it is now possible to reliably identify and analyze the initial loading segment in the indentation experiments.
Design with Uncertain Technology Evolution
Arendt, Jonathan Lee
2012-10-19
of technology. Techniques for modeling evolution of a technology that has multiple performance attributes are developed. An S-curve technology evolution model is used. The performance of a technology develops slowly at first, quickly during heavy R&D effort...
Visualization of Growth Curve Data from Phenotype MicroarrayExperiments
Jacobsen, Janet S.; Joyner, Dominique C.; Borglin, Sharon E.; Hazen, Terry C.; Arkin, Adam P.; Bethel, E. Wes
2007-04-19
Phenotype microarrays provide a technology to simultaneouslysurvey the response of an organism to nearly 2,000 substrates, includingcarbon, nitrogen and potassium sources; varying pH; varying saltconcentrations; and antibiotics. In order to more quickly and easily viewand compare the large number of growth curves produced by phenotypemicroarray experiments, we have developed software to produce and displaycolor images, each of which corresponds to a set of 96 growth curves.Using color images to represent growth curves data has proven to be avaluable way to assess experiment quality, compare replicates, facilitatecomparison of the responses of different organisms, and identifysignificant phenotypes. The color images are linked to traditional plotsof growth versus time, as well as to information about the experiment,organism, and substrate. In order to share and view information and dataproject-wide, all information, plots, and data are accessible using onlya Web browser.
An extinction curve template for intrinsically reddened quasars
Zafar, Tayyaba; Watson, Darach; Fynbo, Johan P U; Krogager, Jens-Kristian; Zafar, Nosheen; Saturni, Francesci G; Geier5, Stefan; Venemans, Bram P
2015-01-01
We analyze the near-infrared to UV data of 16 quasars with redshifts ranging from 0.71 $New Technology Telescope (NTT). To study dust extinction curves intrinsic to the quasars, from the HAQ survey we selected 16 cases where the Small Magellanic Cloud (SMC) law could not provide a good solution to the spectral energy distributions (SEDs). We derived the extinction curves using Fitzpatrick & Massa 1986 (FM) law by comparing the observed SEDs to the combined quasar template from Vanden Berk et al. 2001 and Glikman et al. 2006. The derived extinction, $A_V$, ranges from 0.2-1.0 mag. All the individual extinction curves of our quasars are steeper ($...
Broader source: Energy.gov [DOE]
This work provides retrospective experience curves and learning rates for several energy-related technologies, each of which have a known history of federal and state deployment programs. We derive learning rates for eight technologies including energy efficient lighting technologies, stationary fuel cell systems, and residential solar photovoltaics, and provide an overview and timeline of historical deployment programs such as state and federal standards and state and national incentive programs for each technology.
The hidden X-ray breaks in afterglow light curves
Curran, P. A.; Wijers, R. A. M. J.; Horst, A. J. van der; Starling, R. L. C.
2008-05-22
Gamma-Ray Burst (GRB) afterglow observations in the Swift era have a perceived lack of achromatic jet breaks compared to the BeppoSAX, or pre-Swift era. Specifically, relatively few breaks, consistent with jet breaks, are observed in the X-ray light curves of these bursts. If these breaks are truly missing, it has serious consequences for the interpretation of GRB jet collimation and energy requirements, and the use of GRBs as standard candles.Here we address the issue of X-ray breaks which are possibly 'hidden' and hence the light curves are misinterpreted as being single power-laws. We show how a number of precedents, including GRB 990510 and GRB 060206, exist for such hidden breaks and how, even with the well sampled light curves of the Swift era, these breaks may be left misidentified. We do so by synthesising X-ray light curves and finding general trends via Monte Carlo analysis. Furthermore, in light of these simulations, we discuss how to best identify achromatic breaks in afterglow light curves via multi-wavelength analysis.
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.
VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY
Bradley, David
VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY 1. Introduction Students tend to regard the elongated ``Sshaped'' [3, 6, 8] logistic curve of pop ulation dynamics (fig. 1) as somewhat exotic, 5, 6, 7, 8, 9, 10, 11]. My purpose here is to show how the logistic curve may be derived more
VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY
Bradley, David
VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY 1. Introduction Students tend to regard the elongated "S-shaped" [3, 6, 8] logistic curve of pop- ulation dynamics (fig. 1) as somewhat exotic. It is typically, 8, 9, 10, 11]. My purpose here is to show how the logistic curve may be derived more directly
VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY
Bradley, David
VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY 1.Introduction Students tend to regard the elongated "S-shaped" [3, 6, 8] logistic curve here is to show how the logistic curve may be derived more directly as a simple consequence of the more
Does the Environmental Kuznets Curve Describe How Individual Countries Behave?
Deacon, Robert; Norman, Catherine S
2004-01-01
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
2004-01-01
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
Experience curves for power plant emission control technologies
Rubin, Edward S.; Yeh, Sonia; Hounshell, David A; Taylor, Margaret R
2007-01-01
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; Taylor, Margaret R
2007-01-01
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
2007-01-01
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
2007-01-01
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
Wenderholm, Elaine
in the hands of our thou- sands of students and professors. And the promise of discovery and innovation and plans set forth at SUNY Oswego in 2013-14: We inhabited new buildings, with shimmering windows and solar panels. Students, including our first class of Possibility Scholars, spread wide their minds to grasp new
ENERGY EFFICIENCY TECHNOLOGY ROADMAP
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
managed the overall development and maturation of this Energy Efficiency Technology Roadmap, the effort would not have been possible without the active engagement of a diverse...
Aerodynamics of a rigid curved kite wing
Maneia, Gianmauro; Tordella, Daniela; Iovieno, Michele
2013-01-01
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...
UV Light Curves of Thermonuclear Supernovae
S. I. Blinnikov; E. I. Sorokina
2000-03-17
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
2010-01-01
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 ...
LIGHT CURVES OF 32 LARGE TRANSNEPTUNIAN OBJECTS
Benecchi, Susan D.; Sheppard, Scott S.
2013-05-15
We present observations of 32 primarily bright, newly discovered Transneptunian objects (TNOs) observable from the Southern Hemisphere during 39 nights of observation with the Irenee du Pont 2.5 m telescope at Las Campanas Observatory. Our dataset includes objects in all dynamical classes, but is weighted toward scattered objects. We find 15 objects for which we can fit periods and amplitudes to the data, and place light curve amplitude upper limits on the other 17 objects. Combining our sample with the larger light curve sample in the literature, we find a 3{sigma} correlation between light curve amplitude and absolute magnitude with fainter objects having larger light curve amplitudes. We looked for correlations between light curve and individual orbital properties, but did not find any statistically significant results. However, if we consider light curve properties with respect to object dynamical classification, we find statistically different distributions between the classical-scattered and classical-resonant populations at the 95.60% and 94.64% level, respectively, with the classical objects having larger amplitude light curves. The significance is 97.05% if the scattered and resonant populations are combined. The properties of binary light curves are largely consistent with the greater TNO population except in the case of tidally locked systems. All the Haumea family objects measured so far have light curve amplitudes and rotation periods {<=}10 hr, suggesting that they are not significantly different from the larger TNO population. We expect multiple factors are influencing object rotations: object size dominates light curve properties except in the case of tidal, or proportionally large collisional interactions with other TNOs, the influence of the latter being different for each TNO sub-population. We also present phase curves and colors for some of our objects.
SMOOTHING SPLINE GROWTH CURVES WITH COVARIATES
#11;ect growth curves. Due to the repeated measurement structure of his model, he is able to determine adapt the interactive spline model of Wahba to growth curves with covariates. The smoothing spline smoothing spline models (Ch. 10, Wahba (1990)). In this brief article, we adapt interactive spline models
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
How current loops and solenoids curve space-time
A. Füzfa
2015-04-01
The curved space-time around current loops and solenoids carrying arbitrarily large steady electric currents is obtained from the numerical resolution of the coupled Einstein-Maxwell equations in cylindrical symmetry. The artificial gravitational field associated to the generation of a magnetic field produces gravitational redshift of photons and gravitational acceleration of neutral massive particles. The strength of the generated gravitational field is extremely weak from what can be obtained through present technology, although it might be detectable with high-precision measurements such as atom interferometry.
Shifting the cost curve for subsea developments
Solheim, B.J.; Hestad, E.
1995-12-31
A steadily increasing challenge in offshore oil and gas field developments in the Norwegian part of the North Sea is to design, construct, and install offshore installations that give an acceptable return of investment Deeper water, limited reservoirs and a low, fluctuating oil price make the task even more demanding. Saga Petroleum has recently faced this challenge with its last field development project. Attention in this paper is focused on the Vigdis subsea production system. However, the considerations and cost reduction elements are valid for offshore field developments in general. The main cost reductions are obtained by: Maximum use of industry capability; Application of new organization principles; Focus on functional requirements; Shortened project execution time; Technological development. In addition this paper presents thoughts on further cost reduction possibilities for future subsea field developments.
Decline curve analysis for horizontal wells
Shih, Min-Yu
1994-01-01
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
2012-01-01
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,
Stable Segmentation of 2D Curves
Fitzgibbon, Andrew WJ
This thesis deals with the specific subproblem of converting sequences of two-dimensional data points into higher level descriptions in terms of curved shape primitives. This is an important member of the wider family ...
Environmental bias and elastic curves on surfaces
Jemal Guven; Dulce María Valencia; Pablo Vázquez-Montejo
2014-08-15
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.
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
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-by-point. Manufacturers have stampeded to offer the new technology. Applied Biosystems got out in front in 2004 when
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's, is a promising technology for new cryptographic applications. It can achieve high security levels, Jing Chen, Jian Wang, Duncan S. Wong, and Xiaotie Deng Abstract We propose a new architecture
Biltoft, P J
2004-10-15
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.
Updated U.S. Geothermal Supply Curve
Augustine, C.; Young, K. R.; Anderson, A.
2010-02-01
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.
Freedom from Pollution? The State, the People, and the Environmental Kuznets Curve
Bond, Craig A.; Farzin, Y. Hossein
2004-01-01
and the environmental Kuznets curve for deforestation: aand the environmental Kuznets curve. Ecological Economicsbias in environmental Kuznets curves. Ecological Economics
Experimental Simulation of Closed Timelike Curves
Martin Ringbauer; Matthew A. Broome; Casey R. Myers; Andrew G. White; Timothy C. Ralph
2015-01-20
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.
Pandharipande, R
2011-01-01
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.
Chiral gap effect in curved space
Antonino Flachi; Kenji Fukushima
2015-05-29
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.
Reversible vectorisation of 3D digital planar curves and applications
Sivignon, Isabelle
Reversible vectorisation of 3D digital planar curves and applications Isabelle Sivignon a,, Florent the problem of the computation of a planar polygonal curve from a digital planar curve, such that the digital data can be exactly retrieved from the polygonal curve. The proposed transformation also provides
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
Cryptographic Schemes based on Elliptic Curve Pairings
Paterson, Kenny
on Elliptic Curve Pairings: Contributions to Public Key Cryptography and Key Agreement Protocols This thesis are then used to make concrete CL-PKC schemes and are also used to make other efficient key agreement protocols. It does rely on the use of a trusted authority (TA) who is in possession of a master key. In this respect
Closed timelike curves in general relativity
W. B. Bonnor
2002-11-13
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
Updated Hubbert curves analyze world oil supply
Ivanhoe, L.F.
1996-11-01
The question is not whether, but when, world crude oil production will start to decline, ushering in the permanent oil shock era. While global information for predicting this event is not so straightforward as the data M. King Hubbert used in creating his famous Hubbert Curve that predicted the US (Lower 48 states, or US/48) 1970 oil production peak, there are strong indications that most of the world`s large exploration targets have now been found. Meanwhile, the earth`s population is exploding along with the oil needs of Asia`s developing nations. This article reviews Hubbert`s original analyses on oil discovery and production curves for the US/48 and projects his proven methodology onto global oil discoveries and production as of 1992. The world`s oil discovery curve peaked in 1962, and thence declined, as a Hubbert Curve predicts. However, global production was restricted after the 1973 Arab oil embargo. Otherwise, world production would have peaked in the mid-1990s. Two graphs show alternate versions of future global oil production.
Fractionalization of Interstitials in Curved Colloidal Crystals
William T. M. Irvine; Mark J. Bowick; Paul M. Chaikin
2013-10-11
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.
Magnetar Driven Shock Breakout and Double Peaked Supernova Light Curves
Kasen, Daniel; Bildsten, Lars
2015-01-01
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
2008-11-10
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.
Centrifugally driven relativistic dynamics on curved trajectories
Andria Rogava; George Dalakishvili; Zaza Osmanov
2003-03-27
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 \
Quantum Mechanics and Closed Timelike Curves
Florin Moldoveanu
2007-04-23
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.
Galaxy rotation curves in de Sitter space
Maurice H. P. M. van Putten
2015-01-27
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
2006-09-22
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.
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
2011-10-31
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
2014-12-23
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.
Nicholson, Paul
2009-01-01
by Joanne Hodges. Faience Technology, Nicholson, UEE 2009Egyptian materials and technology, ed. Paul T. Nicholson,Nicholson, 2009, Faience Technology. UEE. Full Citation:
Visual Attention and Driver Performance at Horizontal Curves
Brimley, Bradford K.
2014-12-02
at any location and on any facility. Traffic control devices (TCDs) can be installed at curves to provide drivers the information necessary for safe navigation. The research in this dissertation examines the theory that TCDs at curves are not only...
Computational design with curved creases : David Huffman's approach to paperfolding
Koschitz, Richard Duks
2014-01-01
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 ...
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;...
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
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
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. In this paper we give the first theoretical basis for these curve fittings. It is well known that oil field
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
Innovation in Nuclear Technology for the Least Product Price and Cost
Duffey, Romney
2003-09-01
In energy markets, costs dominate for all new technology introductions (pressure valves, gas turbines, reactors) both now and far into the future. Technology improves, and costs are reduced as markets are penetrated with the trend following a learning/experience curve (MCE) based on classic economic forces. The curve followed is governed by development costs and market targets, and nuclear systems follow such a curve in order to compete with other technologies and projected future cost for alternate energy initiatives. Funding impacts directly on market penetration and on the ''learning rate.'' The CANDU/AECL development path (experience curve) is a chosen balance between evolution and revolution for a competitive advantage.
Calibrating Curved Crystals Used for Plasma Spectroscopy
Haugh, M. J., Jacoby, K. D., Ross, P. W., Rochau, G. Wu, M., Regan, S. P., Barrios, M. A.
2012-10-29
The throughput and resolving power of an X-ray spectrometer that uses a curved crystal as the diffraction element is determined primarily by the crystal X-ray reflectivity properties. This poster presents a measurement technique for these crystal parameters using a simple diode source to produce a narrow spectral band. The results from measurements on concave elliptical polyethylene terephthalate (PET) crystals and convex potassium acid phthalate (KAP) crystals show large variations in the key parameters compared to those from the flat crystal.
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...
Technology reviews: Glazing systems
Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.
1992-09-01
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.
Possible Pressure Effect for Superconductors
A. Kwang-Hua Chu
2005-08-30
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.
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
professionals more easily evaluate this technology for the market, National Renewable Energy Laboratory (NREL performance with better certainty. Technical Contact: Jon Winkler, jon.winkler@nrel.gov Reference: Winkler, JStudy of residential dehumidifiers results in practical performance curves for use in whole
Light curves from rapidly rotating neutron stars
Numata, Kazutoshi
2010-01-01
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...
A. Retter; W. Liller; G. Garradd
1999-05-28
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.
Trigeneration Possibilities of Implementation at CERN
Kühnl-Kinel, J
1999-01-01
Optimum distribution of energy supply systems can result in large savings in industrial facilities and production devices. Identifying the configuration of existing equipment and its loading, in order to minimize total energy consumption and at the same time satisfy given load demands, has very high payback potential. This paper presents the principle of trigeneration, the technology that can offer a highly efficient way of converting primary fuel (gas, oil) into useful energy as electricity, heat and chilled water simultaneously. It explains different factors that must be considered for such systems to be economically feasible. Some examples of industrial trigeneration systems are analysed and discussed to illustrate the application. Also the possibility of implementation of trigeneration at CERN is discussed, taking into account the existing cogeneration system, power supply structure, secondary energy demands, as well as future developments in our energy policy.
TRANSPORT AND REDUCTION POSSIBILITIES DURING TPBAR EXTRACTION
Korinko, P
2008-05-19
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.
Curved Spacetimes and Curved Graphene: a status report of the Weyl-symmetry approach
Alfredo Iorio
2014-12-15
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.
Meininger, Aaron G.
2012-01-01
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
2009-01-01
of the environmental Kuznets curve. Journal of Publicof the environmental Kuznets curve studies. Agriculture andhypothesis and environmental Kuznets Curve: examining the
DEVELOPING FLOW AND HEAT TRANSFER IN STRONGLY CURVED DUCTS OF RECTANGULAR CROSS-SECTION
Yee, G.
2010-01-01
DEVELOpiNG FLOW AND HEAT TRANSFER IN STRONGLY CURVED DUCTS9092 Developing Flow and Heat Transfer in Strongly CurvedForced Convection Heat Transfer in Curved Rectangular
Clifford Fibrations and Possible Kinematics
Alan S. McRae
2009-07-14
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
2010-10-28
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.
Information content of nonautonomous free fields in curved space-time
Parreira, J. E.; Nemes, M. C.; Fonseca-Romero, K. M.
2011-03-15
We show that it is possible to quantify the information content of a nonautonomous free field state in curved space-time. A covariance matrix is defined and it is shown that, for symmetric Gaussian field states, the matrix is connected to the entropy of the state. This connection is maintained throughout a quadratic nonautonomous (including possible phase transitions) evolution. Although particle-antiparticle correlations are dynamically generated, the evolution is isoentropic. If the current standard cosmological model for the inflationary period is correct, in absence of decoherence such correlations will be preserved, and could potentially lead to observable effects, allowing for a test of the model.
Force-extension curves of bacterial flagella
Reinhard Vogel; Holger Stark
2010-11-10
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.
Hydrogen atom on curved noncommutative space
V. G. Kupriyanov
2013-06-05
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.
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...
Inherent Driving Force for Charge Separation in Curved Stacks of Oligothiophenes
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Wu, Qin
2015-01-30
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
THE TRANSIT LIGHT CURVE OF AN EXOZODIACAL DUST CLOUD
Stark, Christopher C.
2011-10-15
Planets embedded within debris disks gravitationally perturb nearby dust and can create clumpy, azimuthally asymmetric circumstellar ring structures that rotate in lock with the planet. The Earth creates one such structure in the solar zodiacal dust cloud. In an edge-on system, the dust 'clumps' periodically pass in front of the star as the planet orbits, occulting and forward-scattering starlight. In this paper, we predict the shape and magnitude of the corresponding transit signal. To do so, we model the dust distributions of collisional, steady-state exozodiacal clouds perturbed by planetary companions. We examine disks with dusty ring structures formed by the planet's resonant trapping of in-spiraling dust for a range of planet masses and semi-major axes, dust properties, and disk masses. We synthesize edge-on images of these models and calculate the transit signatures of the resonant ring structures. The transit light curves created by dusty resonant ring structures typically exhibit two broad transit minima that lead and trail the planetary transit. We find that Jupiter-mass planets embedded within disks hundreds of times denser than our zodiacal cloud can create resonant ring structures with transit depths up to {approx}10{sup -4}, possibly detectable with Kepler. Resonant rings produced by planets more or less massive than Jupiter produce smaller transit depths. Observations of these transit signals may provide upper limits on the degree of asymmetry in exozodiacal clouds.
Exploration Technologies - Technology Needs Assessment
Greene, Amanda I.; Thorsteinsson, Hildigunnur; Reinhardt, Tim; Solomon, Samantha; James, Mallory
2011-06-01
This assessment is a critical component of ongoing technology roadmapping efforts, and will be used to guide the Geothermal Technology Program's research and development.
Mainstreaming New Renewable Energy Technologies
Neuhoff, Karsten; Sellers, Rick
, education, and communication, can significantly enhance energy access (Johansson et al., 2004b). 1 7 7.1 Short-term weather forecasts The electricity system requires a permanent match be tween demand and supply. It must keep sufficient generation... , (Wene, Clas O tto) Experience Curves for Energy Technology Policy, Paris, 2000. 5 In some off-grid applications, P.V. is already cost competitive with conventional technologies. The off-grid market is growing at 16% per year (1992-2002) but is too...
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...
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...
Growing America's Energy Future: Bioenergy Technologies Office...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
made possible by 50 million in cost-shared DOE funding. Bioenergy Successes 2014 BIOENERGY TECHNOLOGIES OFFICE Completed Feedstock Logistics Projects Demonstrate...
Multigroup Radiation Transport in Supernova Light Curve Calculations...
Office of Scientific and Technical Information (OSTI)
Multigroup Radiation Transport in Supernova Light Curve Calculations Even, Wesley P. Los Alamos National Laboratory; Frey, Lucille H. Los Alamos National Laboratory; Fryer,...
Multigroup Radiation Transport in Supernova Light Curve Calculations...
Office of Scientific and Technical Information (OSTI)
Technical Report: Multigroup Radiation Transport in Supernova Light Curve Calculations Citation Details In-Document Search Title: Multigroup Radiation Transport in Supernova Light...
THE CENTRAL CURVE IN LINEAR PROGRAMMING 1. Introduction ...
2010-12-17
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 ...
N=2 Supersymmetric Kinks and real algebraic curves
A. Alonso Izquierdo; M. A. Gonzalez Leon; J. Mateos Guilarte
2000-02-17
The kinks of the (1+1)-dimensional Wess-Zumino model with polynomic superpotential are investigated and shown to be related to real algebraic curves.
Integrated X-Ray Reflectivity Measurements for Elliptically Curved...
Office of Scientific and Technical Information (OSTI)
provides valuable information about the temperature and density of a compressed pellet in a plasma. Elliptically curved pentaerythritol (PET) crystals are used as components...
Normal holomorphic curves from parabolic regions to projective ...
For a given curve f its reduced homogeneous rep-. resentation is defined up to multiplication of all coordinates by the same. holomorphic function without zeros.
Thermally Activated Technologies Technology Roadmap, May 2003...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Thermally Activated Technologies Technology Roadmap, May 2003 Thermally Activated Technologies Technology Roadmap, May 2003 The purpose of this Technology Roadmap is to outline a...
Supersymmetric branes on curved spaces and fluxes
Triendl, Hagen
2015-01-01
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...
Calibration curves for some standard Gap Tests
Bowman, A.L.; Sommer, S.C.
1989-01-01
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.
GIS Method for Developing Wind Supply Curves
Kline, D.; Heimiller, D.; Cowlin, S.
2008-06-01
This report describes work conducted by the National Renewable Energy Laboratory (NREL) as part of the Wind Technology Partnership (WTP) sponsored by the U.S. Environmental Protection Agency (EPA). This project has developed methods that the National Development and Reform Commission (NDRC) intends to use in the planning and development of China's 30 GW of planned capacity. Because of China's influence within the community of developing countries, the methods and the approaches here may help foster wind development in other countries.
Single and binary evolution of Population III stars and their supernovae light curves
T. M. Lawlor; T. R. Young; T. A. Johnson; J. MacDonald
2007-10-18
We present stellar evolution calculations for Population III stars for both single and binary star evolution. Our models include 10 Msun and 16.5 Msun single stars and a 10 Msun model star that undergoes an episode of accretion resulting in a final mass of 16.1 Msun. For comparison, we present the evolution of a solar heavy element abundance model. We use the structure from late stage evolution models to calculate simulated supernova light curves. Light curve comparisons are made between accretion and non-accretion progenitor models, and models for single star evolution of comparable masses. Where possible, we make comparisons to previous works. Similar investigations have been carried out, but primarily for solar or near solar heavy metal abundance stars and not including both the evolution and supernovae explosions in one work.
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)
2013-10-10
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.
Low Cost Security: Explicit Formulae for Genus 4 Hyperelliptic Curves
International Association for Cryptologic Research (IACR)
1 Low Cost Security: Explicit Formulae for Genus 4 Hyperelliptic Curves Jan Pelzl, Thomas Wollinger. Our contribution shows that for low cost security applications genus-4 hyperellip- tic curves (HEC surprising results are: 1) for low cost security application, namely considering an underlying group of order
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
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 Multipole Representation of Diffusion Curves and Points Timothy Sun
Columbia University
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
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
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
Dark halo properties from rotation curves
Raul Jimenez; Licia Verde; S. Peng Oh
2002-01-21
We study a large set of high spatial resolution optical rotation curves of galaxies with the goal of determining the model parameters for a disk embedded within a CDM halo that we model either with a NFW profile or pseudo-isothermal profile. We show that parameter degeneracies present in lower resolution data are lifted at these higher resolutions. 34% of the galaxies do not have a meaningful fit when using the NFW profile and 32% when using the pseudoisothermal profile, however only 14% do not have a meaningful fit in either model. In both models we find correlations between the disk baryon fraction $f_d$ and the spin parameter of the halo $\\lambda'$, between $f_d$ and the dark halo mass $M_{200}$, and between $M_{200}$ and the concentration parameter $c$. We show that the distribution of the concentration parameters $c$, for a NFW halo, is in good agreement with CDM predictions; no significant galaxy population is found with very low values of $c$. The overall distribution of $\\lambda'$ is in good agreement with theoretical predictions from hierarchical tidal torque theory. The whole sample is also well fitted by a pseudo-isothermal dark halo with a core, but the size of the core is rather small (for 70% of the sample the core size is less than 2 kpc). Thus we conclude that the profile of dark matter is steep ($r^{-1}$ or steeper) down to this radius; large dark matter cores (and therefore very low dark matter central densities) seem to be excluded. LSBs tend to have higher values of $\\lambda'$ for a given $f_d$ and lower values of $c$ for a given mass than HSBs. In an appendix we give some useful formula for pseudo-isothermal profile halos and discuss in detail the issue of parameter degeneracies.
Cosmological Applications of Algebraic Quantum Field Theory in Curved Spacetimes
Hack, Thomas-Paul
2015-01-01
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
2006-09-14
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 offer Vienna University of Technology/ Research and Transfer Support | Hildegard Sieberth
Arnold, Anton
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
Thermal stability of curved ray tomography for corrosion monitoring
Willey, C. L.; Simonetti, F.; Nagy, P. B.; Instanes, G.
2014-02-18
Guided wave tomography is being developed as an effective tool for continuous monitoring of corrosion and erosion depth in pipelines. A pair of transmit- and receive-ring arrays of ultrasonic transducers encircles the pipe and delimits the section to be monitored. In curved ray tomography (CRT), the depth profile is estimated from the time delay matrix, ??, whose ij-th entry is the phase traveltime difference between the current and baseline signals measured between transducers i and j of the transmit and receive-ring arrays, respectively. Under perfectly stable experimental conditions, the non-zero entries of ?? are only due to the occurrence of damage and provide a reliable input to CRT. However, during field operation, ?? can develop non-zero entries due to a number of environmental changes ranging from temperature variations to degradation of transducer-pipe coupling and transducer intrinsic performance. Here, we demonstrate that these sources of instability can be eliminated by exploiting the spatial diversity of array measurements in conjunction with EMAT transducer technology which is intrinsically stable owing to its non-contact nature. The study is based on a full-scale experiment performed on a schedule 40, 8’ diameter, 3 m length steel pipe, monitored with two EMAT ring arrays. It is shown that for an irregularly shaped defect the proposed method yields maximum depth estimations that are as accurate as single point ultrasonic thickness gaging measurements and over a wide temperature range up to 175°C. The results indicate that advanced inversion schemes in combination with EMAT transduction offer great potential for continuously monitoring the progression of corrosion or erosion damage in the oil and gas industry.
Progress Report on Alloy 617 Isochronous Stress-Strain Curves
Jill K. Wright; Richard N. Wright; Nancy J. Lybeck
2014-03-01
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.
The motion of point particles in curved spacetime
Eric Poisson
2004-04-01
This review is concerned with the motion of a point scalar charge, a point electric charge, and a point mass in a specified background spacetime. In each of the three cases the particle produces a field that behaves as outgoing radiation in the wave zone, and therefore removes energy from the particle. In the near zone the field acts on the particle and gives rise to a self-force that prevents the particle from moving on a geodesic of the background spacetime. The field's action on the particle is difficult to calculate because of its singular nature: the field diverges at the position of the particle. But it is possible to isolate the field's singular part and show that it exerts no force on the particle -- its only effect is to contribute to the particle's inertia. What remains after subtraction is a smooth field that is fully responsible for the self-force. Because this field satisfies a homogeneous wave equation, it can be thought of as a free (radiative) field that interacts with the particle; it is this interaction that gives rise to the self-force. The mathematical tools required to derive the equations of motion of a point scalar charge, a point electric charge, and a point mass in a specified background spacetime are developed here from scratch. The review begins with a discussion of the basic theory of bitensors (part I). It then applies the theory to the construction of convenient coordinate systems to chart a neighbourhood of the particle's word line (part II). It continues with a thorough discussion of Green's functions in curved spacetime (part III). The review concludes with a detailed derivation of each of the three equations of motion (part IV).
The motion of point particles in curved spacetime
Eric Poisson; Adam Pound; Ian Vega
2011-09-26
This review is concerned with the motion of a point scalar charge, a point electric charge, and a point mass in a specified background spacetime. In each of the three cases the particle produces a field that behaves as outgoing radiation in the wave zone, and therefore removes energy from the particle. In the near zone the field acts on the particle and gives rise to a self-force that prevents the particle from moving on a geodesic of the background spacetime. The field's action on the particle is difficult to calculate because of its singular nature: the field diverges at the position of the particle. But it is possible to isolate the field's singular part and show that it exerts no force on the particle. What remains after subtraction is a smooth field that is fully responsible for the self-force. The mathematical tools required to derive the equations of motion of a point scalar charge, a point electric charge, and a point mass in a specified background spacetime are developed here from scratch. The review begins with a discussion of the basic theory of bitensors. It then applies the theory to the construction of convenient coordinate systems to chart a neighbourhood of the particle's word line. It continues with a thorough discussion of Green's functions in curved spacetime. The review presents a detailed derivation of each of the three equations of motion. Because the notion of a point mass is problematic in general relativity, the review concludes with an alternative derivation of the equations of motion that applies to a small body of arbitrary internal structure.
David J. Jeffery
1999-07-01
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.
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)
2014-06-01
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.
2003-10-21
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.
Denis Borisov; Giuseppe Cardone; Tiziana Durante
2015-03-21
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.
Bookless, W.A.; Quirk, W.J.
1994-06-01
This report discusses: The Clementine satellite, the first US satellite to the Moon in more than two decades, sent back more than 1.5 million images of the lunar surface using cameras designed and calibrated by LLNL. An LLNL-developed laser ranger provided information that will be used to construct a relief map of the Moon`s surface; and Uncertainty and the Federal Role in Science and Technology, Ralph E. Gomory was a recent participate in the Director`s Distinguished Lecturer Series at LLNL. In his lecture, he addressed some of the tensions, conflicts, and possible goals related to federal support for science and technology.
Knuth, Eldon L.; Miller, David R.; Even, Uzi
2014-12-09
Data extracted from time-of-flight (TOF) measurements made on steady-state He free jets at Göttingen already in 1986 and for pulsed Ne free jets investigated recently at Tel Aviv have been added to an earlier plot of terminal condensed-phase mass fraction x{sub 2?} as a function of the dimensionless scaling parameter ?. ? characterizes the source (fluid species, temperature, pressure and throat diameter); values of x{sub 2?} are extracted from TOF measurements using conservation of energy in the free-jet expansion. For nozzles consisting of an orifice in a thin plate; the extracted data yield 22 data points which are correlated satisfactorily by a single curve. The Ne free jets were expanded from a conical nozzle with a 20° half angle; the three extracted data points stand together but apart from the aforementioned curve, indicating that the presence of the conical wall influences significantly the expansion and hence the condensation. The 22 data points for the expansions via an orifice consist of 15 measurements with expansions from the gas-phase side of the binodal curve which crossed the binodal curve downstream from the sonic point and 7 measurements with expansions of the gas-phase product of the flashing which occurred after an expansion from the liquid-phase side of the binodal curve crossed the binodal curve upstream from the sonic point. The association of these 22 points with a single curve supports the alternating-phase model for flows with flashing upstream from the sonic point proposed earlier. In order to assess the role of the spinodal curve in such expansions, the spinodal curves for He and Ne were computed using general multi-parameter Helmholtz-free-energy equation-of-state formulations. Then, for the several sets of source-chamber conditions used in the free-jet measurements, thermodynamic states at key locations in the free-jet expansions (binodal curve, sonic point and spinodal curve) were evaluated, with the expansion presumed to be metastable from the binodal curve to the spinodal curve. TOF distributions with more than two peaks (interpreted earlier as superimposed alternating-state TOF distributions) indicated flashing of the metastable flow downstream from the binodal curve but upstream from the sonic point. This relatively early flashing is due apparently to destabilizing interactions with the walls of the source. If the expansion crosses the binodal curve downstream from the nozzle, the metastable fluid does not interact with surfaces and flashing might be delayed until the expansion reaches the spinodal curve. It is concluded that, if the expansion crosses the binodal curve before reaching the sonic point, the resulting metastable fluid downstream from the binodal curve interacts with the adjacent surfaces and flashes into liquid and vapor phases which expand alternately through the nozzle; the two associated alternating TOF distributions are superposed by the chopping process so that the result has the appearance of a single distribution with three peaks.
Mücke, Tanja A; Milan, Patrick; Peinke, Joachim
2015-01-01
Based on the Langevin equation it has been proposed to obtain power curves for wind turbines from high frequency data of wind speed measurements u(t) and power output P (t). The two parts of the Langevin approach, power curve and drift field, give a comprehensive description of the conversion dynamic over the whole operating range of the wind turbine. The method deals with high frequent data instead of 10 min means. It is therefore possible to gain a reliable power curve already from a small amount of data per wind speed. Furthermore, the method is able to visualize multiple fixed points, which is e.g. characteristic for the transition from partial to full load or in case the conversion process deviates from the standard procedures. In order to gain a deeper knowledge it is essential that the method works not only for measured data but also for numerical wind turbine models and synthetic wind fields. Here, we characterize the dynamics of a detailed numerical wind turbine model and calculate the Langevin power...
High Impact Technology Catalyst: Technology Deployment Strategies...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
High Impact Technology Catalyst: Technology Deployment Strategies High Impact Technology Catalyst: Technology Deployment Strategies The Energy Department released the High Impact...
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...
Woodhouse, M.; Goodrich, A.; Redlinger, M.; Lokanc, M.; Eggert, R.
2013-09-01
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.
Not Available
1991-01-01
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.
GENETICS, BREEDING, AND MODELING Use of Lactation Curves for Analysis
Yandell, Brian S.
Department of Agricultural Economics. 4Department of Dairy Science. plot model, LHG = lactation within a herd lactation within a herd group (LHG) (10, 22, 23). Primiparous cows are more persistent, and lactation curves
Convex hulls of a curve in control theory
Kurbatskii, Aleksei N [Moscow School of Economics of Lomonosov MSU, Moscow (Russian Federation)
2012-03-31
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.
Galaxy rotation curves with log-normal density distribution
Marr, John H
2015-01-01
The log-normal distribution represents the probability of finding randomly distributed particles in a micro canonical ensemble with high entropy. To a first approximation, a modified form of this distribution with a truncated termination may represent an isolated galactic disk, and this disk density distribution model was therefore run to give the best fit to the observational rotation curves for 37 representative galaxies. The resultant curves closely matched the observational data for a wide range of velocity profiles and galaxy types with rising, flat or descending curves in agreement with Verheijen's classification of 'R', 'F' and 'D' type curves, and the corresponding theoretical total disk masses could be fitted to a baryonic Tully Fisher relation (bTFR). Nine of the galaxies were matched to galaxies with previously published masses, suggesting a mean excess dynamic disk mass of dex0.61+/-0.26 over the baryonic masses. Although questionable with regard to other measurements of the shape of disk galaxy g...
NATURE OF SINGULARITIES FOR ANALYTICITY DOMAINS OF INVARIANT CURVES 1
preprint archive. Send mail to mp arc@math.utexas.edu for details. 2 Supported by NSF grants. 3 e of physics, ranging from plasma to solid state physics. To study invariant curves we will find it more
Perspective+Detail a visualization technique for vertically curved displays
on the vertical display segment and (3) a head-up display (HUD) in the connecting curved segment (see Figure 1 display connection. The detail view and the HUD are seamlessly integrated with this extended overview
A New 24 ?m Phase Curve for ? Andromedae b
Crossfield, Ian J.
We report the detection of 24 ?m variations from the planet-hosting ? Andromedae system consistent with the orbital periodicity of the system's innermost planet, ? And b. We find a peak-to-valley phase curve amplitude of ...
Application of the decline curve method to aquifers
Potnis, Girish Vijay
1992-01-01
on p/z plot. . . 7. Hypothetical semi-log decline curve for an aquifer . 19 20 20 21 8. Hypothetical exponential decline on log-log plot for an aquifer . . 9. Normalized influx rate curves for aquifer with different radii, . . . 10. Decline.... Hurst modified steady-state method~, 3. van Everdingen and Hurst pseudosteady state methods, 4. Carter - Tracy method, 5. Influence or resistance function methods 6. Fetkovich methodt 1 The most basic model of these methods is the Schilthuis steady...
Automatic classification of eclipsing binaries light curves using neural networks
L. M. Sarro; C. Sánchez-Fernández; A. Giménez
2005-11-11
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.
Seiberg-Witten curve via generalized matrix model
Kazunobu Maruyoshi; Futoshi Yagi
2010-12-27
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.
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
Office of Environmental Management (EM)
capabilities that are energy efficient, low environmental impact 72 and lower cost and that are employed to manufacture technologies and products for clean energy 73...
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
Technology Commercialization Showcase 2008 Vehicle Technologies Program
Davis, Patrick B.
2009-06-19
Presentation illustrating various technology commercialization opportunities and unexploited investment gaps for the Vehicle Technologies Program.
How predictable is technological progress?
Farmer, J Doyne
2015-01-01
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.
Thermally activated technologies: Technology Roadmap
None, None
2003-05-01
The purpose of this Technology Roadmap is to outline a set of actions for government and industry to develop thermally activated technologies for converting America’s wasted heat resources into a reservoir of pollution-free energy for electric power, heating, cooling, refrigeration, and humidity control. Fuel flexibility is important. The actions also cover thermally activated technologies that use fossil fuels, biomass, and ultimately hydrogen, along with waste heat.
Zhang, Junshan
: · realize continuous improvements in performance (efficiency), cost and manufacturability of PV technologies, transformative PV technologies that circumvent cost/performance trade-offs and maintain compatibility with P the growing demand for energy. Photovoltaics (PV) leverages one of the 20th century's greatest scientific
Scalar potential model of spiral galaxy HI rotation curves and rotation curve asymmetry
John C. Hodge
2006-11-22
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.
Yeh, Sonia; Rubin, Edward
2007-01-01
Whitman index for steam- generating construction costs [59]Whitman index of public utility construction costs. Whitman,
Yeh, Sonia; Rubin, Edward S.
2007-01-01
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 S.
2007-01-01
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
Yeh, Sonia; Rubin, Edward S.
2007-01-01
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.
2007-01-01
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
Learning curves for environmental technology and their importance for climate policy analysis
Rubin, Edward S.; Taylor, Margaret R; Yeh, Sonia; Hounshell, David A.
2007-01-01
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
2007-01-01
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.
2007-01-01
and Japan, where higher coal prices justi?ed the higher costof the total O&M cost and the coal price remained relatively
INTERSTATE WASTE TECHNOLOGIES THERMOSELECT TECHNOLOGY
Columbia University
1 INTERSTATE WASTE TECHNOLOGIES THERMOSELECT TECHNOLOGY AN OVERVIEW Presented to the DELAWARE SOLID WASTE MANAGEMENT TECHNICAL WORKING GROUP January 10, 2006 #12;2 INTERSTATE WASTE MANAGEMENT ALLIANCE and maintenance (30 years) Will guarantee performance and Operation and Maintenance Serves solid waste
Combined Solar System and rotation curve constraints on MOND
A. Hees; B. Famaey; G. W. Angus; G. Gentile
2015-10-05
The Modified Newtonian Dynamics (MOND) paradigm generically predicts that the external gravitational field in which a system is embedded can produce effects on its internal dynamics. In this communication, we first show that this External Field Effect can significantly improve some galactic rotation curves fits by decreasing the predicted velocities of the external part of the rotation curves. In modified gravity versions of MOND, this External Field Effect also appears in the Solar System and leads to a very good way to constrain the transition function of the theory. A combined analysis of the galactic rotation curves and Solar System constraints (provided by the Cassini spacecraft) rules out several classes of popular MOND transition functions, but leaves others viable. Moreover, we show that LISA Pathfinder will not be able to improve the current constraints on these still viable transition functions.
Electromagnetic field limits set by the V-Curve.
Warne, Larry Kevin; Jorgenson, Roy Eberhardt; Hudson, Howard Gerald
2014-07-01
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.
Fast identification of transits from light-curves
Pavlos Protopapas; Raul Jimenez; Charles Alcock
2005-02-15
We present an algorithm that allows fast and efficient detection of transits, including planetary transits, from light-curves. The method is based on building an ensemble of fiducial models and compressing the data using the MOPED algorithm. We describe the method and demonstrate its efficiency by finding planet-like transits in simulated Pan-STARRS light-curves. We show that that our method is independent of the size of the search space of transit parameters. In large sets of light-curves, we achieve speed up factors of order of $10^{8}$ times over the full $\\chi2$ search. We discuss how the algorithm can be used in forthcoming large surveys like Pan-STARRS and LSST and how it may be optimized for future space missions like Kepler and COROT where most of the processing must be done on board.
Automatic generation and analysis of solar cell IV curves
Kraft, Steven M.; Jones, Jason C.
2014-06-03
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.
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...
The Hardy inequality and the heat flow in curved wedges
David Krejcirik
2015-07-13
We show that the polynomial decay rate of the heat semigroup of the Dirichlet Laplacian in curved planar wedges equals the sum of the usual dimensional decay rate and a multiple of the reciprocal value of the opening angle. To prove the result, we develop the method of self-similar variables for the associated heat equation and study the asymptotic behaviour of the transformed non-autonomous parabolic problem for large times. We also establish an improved Hardy inequality for the Dirichlet Laplacian in non-trivially curved wedges and state a conjecture about an improved decay rate in this case.
Curved Herbig-Haro Jets: Simulations and Experiments
A. Ciardi; D. J. Ampleford; S. V. Lebedev; C. Stehle
2007-12-28
Herbig-Haro jets often show some degree of curvature along their path, in many cases produced by the ram pressure of a side-wind. We present simulations of both laboratory and astrophysical curved jets and experimental results from laboratory experiments. We discuss the properties and similarities of the laboratory and astrophysical flow, which show the formation of internal shocks and working surfaces. In particular the results illustrate how the break-up of the bow-shock and clumps in the flow are produced without invoking jet variability; we also discuss how jet rotation reduces the growth of the Rayleigh-Taylor instability in curved jets.
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
Technology Roadmap Analysis 2013: Assessing Automotive Technology...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Technology Roadmap Analysis 2013: Assessing Automotive Technology R&D Relevant to DOE Power Electronics Cost Targets Technology Roadmap Analysis 2013: Assessing Automotive...
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
Building Technologies Office Overview
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Roland Risser Director, Building Technologies Office Building Technologies Office Energy Efficiency Starts Here. 2 Building Technologies Office Integrated Approach: Improving...
A Comparison of Vehicle Speed at Day and Night Rural Horizontal Curves
Quaium, Ridwan B.
2010-07-14
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...
Investigating successful implementation of technologies in Developing nations
Hsieh, Edward F. (Edward Fang)
2005-01-01
A study was performed to determine possible factors that contribute to successful implementation of new technologies in developing nations. Engineers and other inventors have devoted great effort to Appropriate Technology ...
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
Quantifying the economic potential of a biomass to olefin technology
Chiang, Nicholas (Nicholas Kuang Hua)
2005-01-01
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. ...
Energy Conservation Possibilities Using Gas Separating Membranes
Knieriem, H.; Henis, J. M. S.
1980-01-01
The separation of gases using semi permeable membranes is a viable unit operation. A novel composite membrane combined with hollow fiber spinning technology enable Monsanto Co. to offer PRISM (TM); Separators to the industrial market. The separator...
energy. Background: Potential of Fuel Cell Technology 60%+ efficiency possible 15 40% efficiency Fuel Cell TypicalElectricalEfficiency(HHV) Source: EPA, Catalog of CHP Technologies, December 2008 Electrical Efficiency Fuel cells convert chemical energy directly into electrical energy, bypassing
Fast and compact elliptic-curve cryptography Mike Hamburg
International Association for Cryptologic Research (IACR)
relatively compact. For example, on Intel Sandy Bridge, a curve with about 2250 points produces a signa- ture a difficult choice for less powerful systems such as embedded devices and smart phones. Cryptography Research Bridge microarchitecture. While RSA-2048 is still con- siderably faster at approximately 98k (even
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
CURVES, K3 SURFACES, FANO THREEFOLDS PAUL HACKING
Hacking, Paul
CURVES, K3 SURFACES, FANO THREEFOLDS PAUL HACKING (Notes by Anna Kazanova) No Fano 3-fold in fact )) P(n r)-1 . Dimension dim G(r, n) = r(n - r). Date: 03/02/2012. 1 #12;2 PAUL HACKING · g = 6. Take
Tracking stochastic resonance curves using an assisted reference model
Calderón Ramírez, Mario; Rico Martínez, Ramiro; Parmananda, P.
2015-06-15
The optimal noise amplitude for Stochastic Resonance (SR) is located employing an Artificial Neural Network (ANN) reference model with a nonlinear predictive capability. A modified Kalman Filter (KF) was coupled to this reference model in order to compensate for semi-quantitative forecast errors. Three manifestations of stochastic resonance, namely, Periodic Stochastic Resonance (PSR), Aperiodic Stochastic Resonance (ASR), and finally Coherence Resonance (CR) were considered. Using noise amplitude as the control parameter, for the case of PSR and ASR, the cross-correlation curve between the sub-threshold input signal and the system response is tracked. However, using the same parameter the Normalized Variance curve is tracked for the case of CR. The goal of the present work is to track these curves and converge to their respective extremal points. The ANN reference model strategy captures and subsequently predicts the nonlinear features of the model system while the KF compensates for the perturbations inherent to the superimposed noise. This technique, implemented in the FitzHugh-Nagumo model, enabled us to track the resonance curves and eventually locate their optimal (extremal) values. This would yield the optimal value of noise for the three manifestations of the SR phenomena.
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 Orbital Light Curve of Aquila X-1
William F. Welsh; Edward L. Robinson; Patrick Young
2000-04-25
We obtained R- and I-band CCD photometry of the soft X-ray transient/neutron- star binary Aql X-1 in 1998 June while it was at quiescence. We find that its light curve is dominated by ellipsoidal variations, although the ellipsoidal variations are severely distorted and have unequal maxima. After we correct for the contaminating flux from a field star located only 0.46" away, the peak-to-peak amplitude of the modulation is ~0.25 mag in the R band, which requires the orbital inclination to be greater than 36 degrees. The orbital period we measure is consistent with the 18.95 h period measured by Chevalier & Ilovaisky (1998). During its outbursts the light curve of Aql X-1 becomes single humped. The outburst light curve observed by Garcia et al. (1999) agrees in phase with our quiescent light curve. We show that the single humped variation is caused by a ``reflection effect,'' that is, by heating of the side of the secondary star facing towards the neutron star.
Late Time Tail of Wave Propagation on Curved Spacetime
E. S. C. Ching; P. T. Leung; W. M. Suen; K. Young
1994-10-30
The late time behavior of waves propagating on a general curved spacetime is studied. The late time tail is not necessarily an inverse power of time. Our work extends, places in context, and provides understanding for the known results for the Schwarzschild spacetime. Analytic and numerical results are in excellent agreement.
Supplemental Material Generalized Streak Lines Advected Tangent Curves
of advected tangent curves. It turns out that generalized streak lines [WTS+ 07] can be described using. Generalized Streak Lines w = v, ¯f = FFF Wiebel et al. [WTS+ 07] introduced a generalization of streak lines. In Data Visualization 2003. Proc. VisSym 03, pages 141148, 2003. [WTS+ 07] Alexander Wiebel, Xavier
Compiler Assisted Elliptic Curve Cryptography M. Barbosa1
International Association for Cryptologic Research (IACR)
Compiler Assisted Elliptic Curve Cryptography M. Barbosa1 , A. Moss2 and D. Page2 1 Departamento de and compilation techniques for cryptographic software, focusing on ECC in particular. Specifically, we describe and optimisation of ECC point arithmetic using a cryptography-aware lan- guage and compiler. Our main results show
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
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
Goon, Garrett; Hinterbichler, Kurt; Trodden, Mark
2011-07-08
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.
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)
2014-09-20
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.
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 protected software implementation of point multiplication for the standard NIST and SECG binary elliptic of their relatively short keys. Thus, software implementations of ECC for the high end server platforms become
Power Density Spectra of Gamma-Ray Burst Light Curves: Implications on Theory and Observation
Heon-Young Chang; Insu Yi
2001-01-02
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.
MASSACHUSETTS INSTITUTE OF TECHNOLOGY ARTIFICIAL INTELLIGENCE LABORATORY
Poggio, Tomaso
MASSACHUSETTS INSTITUTE OF TECHNOLOGY ARTIFICIAL INTELLIGENCE LABORATORY and CENTER FOR BIOLOGICAL parameters could possibly have application to other problems in vision. We investigate one such application and Cognitive Sciences and at the Artificial Intelligence Laboratory at the Massachusetts Institute
MASSACHUSETTS INSTITUTE OF TECHNOLOGY ARTIFICIAL INTELLIGENCE LABORATORY
Poggio, Tomaso
MASSACHUSETTS INSTITUTE OF TECHNOLOGY ARTIFICIAL INTELLIGENCE LABORATORY and CENTER FOR BIOLOGICAL parameters could possibly have application to other problems in vision. We investigate one such application of Brain and Cognitive Sciences and at the Artificial Intelligence Laboratory at the Massachusetts
Hagedorn String Thermodynamics in Curved Spacetimes and near Black Hole Horizons
Thomas G. Mertens
2015-06-25
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.
Graphene wormholes: A condensed matter illustration of Dirac fermions in curved space
J. Gonzalez; J. Herrero
2009-09-16
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.
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
Possible demonstration of ionization cooling using absorbers...
Office of Scientific and Technical Information (OSTI)
cooling may play an important role in reducing the phase space volume of muons for a future muon-muon collider. We describe a possible experiment to demonstrate transverse...
Oates, S R; De Pasquale, M; Schady, P; Breeveld, A A; Holland, S T; Kuin, N P M; Marshall, F E
2012-01-01
We examine a sample of 48 Swift/UVOT long Gamma-ray Burst light curves and find a correlation between the logarithmic luminosity at 200s and average decay rate determined from 200s onwards, with a Spearman rank coefficient of -0.58 at a significance of 99.998% (4.2 sigma). We discuss the causes of the log L_200s - alpha_>200s correlation, finding it to be an intrinsic property of long GRBs, and not resulting from the selection criteria. We find two ways to produce the correlation. One possibility is that there is some property of the central engine, outflow or external medium that affects the rate of energy release so that the bright afterglows release their energy more quickly and decay faster than the fainter afterglows. Alternatively, the correlation may be produced by variation of the observers viewing angle, with observers at large viewing angles observing fainter and slower decaying light curves.
Novakova, Katerina; Vaclavik, Jan; 10.1109/TUFFC.2012.2420
2012-01-01
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...
Dokmeci, Mehmet
A HIGH ASPECT RATIO, FLEXIBLE, TRANSPARENT AND LOW-COST PARYLENE-C SHADOW MASK TECHNOLOGY and Technology, MIT, Cambridge, MA, USA Abstract: In this paper, we present a flexible parylene-C shadow mask technology for creating microscale patterns on flat and curved surfaces. The smallest feature size of 4 µm
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
Software Technologies Deloitte Dialog Semiconductor ECM Selection EDT-Year in Industry EMC Corporation to join our organisation and be based in our Ferndown, Dorset, location within our product electronics have application, design and manufacturing facilities in Canada, America, Europe and China. We
1995-09-01
The Manufacturing Technologies Center is an integral part of Sandia National Laboratories, a multiprogram engineering and science laboratory, operated for the Department of Energy (DOE) with major facilities at Albuquerque, New Mexico, and Livermore, California. Our Center is at the core of Sandia`s Advanced Manufacturing effort which spans the entire product realization process.
Kemner, Ken
of pyrochemical processes for the recycle of oxide, carbide and other advanced fuels and laid the foundationPyroprocessing Technologies RECYCLING USED NUCLEAR FUEL FOR A SUSTAINABLE ENERGY FUTURE #12;32 Storing Used Nuclear Fuel is a Real Waste Nuclear power is the most environmentally friendly way
Building Technologies Office Overview
2013-04-01
Building Technologies Office Overview Presentation for the 2013 Building Technologies Office's Program Peer Review
Gravitational Cheshire effect: Nonminimally coupled scalar fields may not curve spacetime
Eloy Ayón-Beato; Cristián Martínez; Ricardo Troncoso; Jorge Zanelli
2005-06-07
It is shown that flat spacetime can be dressed with a real scalar field that satisfies the nonlinear Klein-Gordon equation without curving spacetime. Surprisingly, this possibility arises from the nonminimal coupling of the scalar field with the curvature, since a footprint of the coupling remains in the energy-momentum tensor even when gravity is switched off. Requiring the existence of solutions with vanishing energy-momentum tensor fixes the self-interaction potential as a local function of the scalar field depending on two coupling constants. The solutions describe shock waves and, in the Euclidean continuation, instanton configurations in any dimension. As a consequence of this effect, the tachyonic solutions of the free massive Klein-Gordon equation become part of the vacuum.
Operator formalism for b-c systems with $?=1$ on general algebraic curves
F. Ferrari; J. Sobczyk
1995-01-27
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.
Constraining spacetime variations of nuclear decay rates from light curves of type Ia supernovae
Ivan Karpikov; Maxim Piskunov; Anton Sokolov; Sergey Troitsky
2015-05-12
The luminosity of fading type Ia supernovae is governed by radioactive decays of 56Ni and 56Co. The decay rates are proportional to the Fermi coupling constant G_F and, therefore, are determined by the vacuum expectation value v of the Brout-Englert-Higgs field. We use publicly available sets of light curves of type Ia supernova at various redshifts to constrain possible spacetime variations of the 56Ni decay rate. The resulting constraint is not very tight; however, it is the only direct bound on the variation of the decay rate for redshifts up to z~1. We discuss potential applications of the result to searches for non-constancy of G_F and v.
Pearling instability of membrane tubes driven by curved proteins and actin polymerization
Urška Jeler?i?; Nir S. Gov
2014-09-26
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.
HEMISPHERIC CENTER FOR ENVIRONMENTAL TECHNOLOGY
M.A. Ebadian
1999-01-31
FIU-HCET participated in an ICT meeting at Mound during the second week of December and presented a brief videotape of the testing of the Robotic Climber technology. During this meeting, FIU-HCET proposed the TechXtract technology for possible testing at Mound and agreed to develop a five-page proposal for review by team members. FIU-HCET provided assistance to Bartlett Inc. and General Lasertronics Corporation in developing a proposal for a Program Opportunity Notice (PON). The proposal was submitted by these companies on January 5, 1999. The search for new equipment dismantlement technologies is continuing. The following vendors have responded to requests for demonstration: LUMONICS, Laser Solutions technology; CRYO-BEAM, Cryogenic cutting technology; Waterjet Technology Association, Waterjet Cutting technology; and DIAJET, Waterjet Cutting technology. Based on the tasks done in FY98, FIU-HCET is working closely with Numatec Hanford Corporation (NHC) and Pacific Northwest National Laboratory (PNNL) to revise the plan and scope of work of the pipeline plugging project in FY99, which involves activities of lab-scale flow loop experiments and a large-scale demonstration test bed.
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
MGMT 560: Management of Technology Professor Lyle Ungar
Ungar, Lyle H.
: incremental and disruptive. Product life cycles and dominant designs. The learning curve. Tech- noogy vision: Why good companies fail to make the leap. The whole product. 4. Hi Tech marketing Hi Tech marketing over the technology life cycle. 5. Managing Risk; Scenario planning Risk and exposure. R & D portfolio
IMTC 2005 Instrumentation and Measurement Technology Conference
Payeur, Pierre
IMTC 2005 Instrumentation and Measurement Technology Conference Ottawa, Canada, 17-19 May 2005 the currently available sensor technologies. The primary problem comes from the fact that laser range sensors the availability of system integration is non-existent, which reduces or inconveniences the possibility
Dissipative dark matter and the rotation curves of dwarf galaxies
Foot, R
2015-01-01
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...
Sagittal focusing of synchrotron x radiation with curved crystals
Sparks, C.J. Jr.; Ice, G.E.; Wong, J.; Batterman, B.W.
1981-01-01
We describe the sagittal focusing of x rays with singly bent crystals that accept the meridian plane divergence from a similar but flat crystal to form a pair in a nondispersive two-crystal Bragg monochromator. Curved crystals can intercept from 5 to 20 times the sagittal divergence of curved mirrors at x-ray energies above 10 keV. Anticlastic (transverse) bending of the crystal is made negligible in the meridian plane with reinforcing ribs cut parallel to the plane of scattering. Results show that at energies of 10, 20, and 30 keV the bent crystal performs efficiently and images the source size at the Cornell High Energy Synchrotron Source.
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)
2014-10-24
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.
Trapping and guiding surface plasmons in curved graphene landscapes
Smirnova, Daria; Wang, Zheng; Kivshar, Yuri S; Khanikaev, Alexander B
2015-01-01
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.
A consideration of a micro-Phillips' Curve
Paczkowski, Walter Richard
1973-01-01
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...
Discontinuous quantum evolutions in the presence of closed timelike curves
Richard DeJonghe; Kimberly Frey; Tom Imbo
2010-05-06
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.
Optics-less smart sensors and a possible mechanism of cutaneous vision in nature
Leonid Yaroslavsky; Chad Goerzen; Stanislav Umansky; H. John Caulfield
2008-08-08
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.
Warner, Beth Forrest
2002-03-27
Portal Technology Beth Forrest Warner Director, KU Digital Library Initiatives bwarner@ku.edu PUAD 839 March 27, 2002 Defining the issue… Today’s government agencies at all levels should note that the citizens they serve are “little concerned... their citizens’ perspectives. Instead of launching online services on a department-by-department basis, they are aggregating services across departments, accessible through a common portal.” (Janet Caldow, “The Quest for Electronic Government: A Defining...
Integrated X-ray Reflectivity Measurements for Elliptically Curved...
Office of Scientific and Technical Information (OSTI)
Administration (NNSA) Country of Publication: United States Language: English Subject: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY crystals, spectrometer Word...
Coal based synthetic fuel technology assessment guides
Not Available
1981-09-01
Seventeen synthetic fuel processes are described in detail and compared on a uniform basis. This work was supported by the Energy Information Administration for the purpose of technology assessment of the processes, their efficiency, the capitalized and operating cost of plants of similar size, possible constraints, possible siting problems, regional effects, pollution control, etc. (LTN)
Lu, Shin-yee
1993-03-01
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.
Papatheodorou, Y.
2007-02-15
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.
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
Spacetime Warps for Spinning Particles Possible?
T. Dudas
2002-01-04
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.
Another Tor is possible Amadou Moctar Kane
International Association for Cryptologic Research (IACR)
a very little number of onion router (OR) in the Tor network (about 6000 OR for around 300,000 users path. More recently, Tor was created from the Onion Routing principles. It was originally FundedAnother Tor is possible Amadou Moctar Kane KSecurity, BP 47136, Dakar, Senegal. amadou1@gmail
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
'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.
Possibility of a photometric detection of "exomoons"
Szabó, G M; Diveki, Z; Simon, A; Szabo, Gy. M.; Diveki, Zs.
2006-01-01
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...
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
On the Computation of Integral Curves in Adaptive Mesh Refinement Vector Fields
Deines, Eduard
2012-01-01
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?
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
Seismic fragility curves for reinforced concrete buildings A Dissertation Submitted in Partial dissertation entitled "Seismic fragility curves for reinforced concrete frame and wall- frame buildings. Buildings designed for seismic loading, and buildings designed only for gravity loads, are considered
Maitland, Padma
2013-01-01
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
2011-01-01
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)
Nuclear Science & Technology Nuclear Science & Technology1354608000000Nuclear Science & TechnologySome of these resources are LANL-only and will require Remote Access. No...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O O DBiomass andAtomsVehicles and Fuels VehiclesTechnologies
Distributed Energy Technology Characterization (Desiccant Technologies...
Office of Environmental Management (EM)
technologies can be designed to utilize the available thermal energy from a combined heat and power (CHP) system. This technology characterization is intended to provide...
Vehicle Technologies Office: 2014 Electric Drive Technologies...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
automotive technologies under development. Research is focused on developing power electronics (PE), electric motor, and traction drive system (TDS) technologies that will reduce...
NATIONAL ENERGY TECHNOLOGY LABORATORY Technology Transfer Basic...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
in Technology Transfer" award from the Federal Laboratory Consortium. Application of this technology reduces the costs and energy associated with more conventional scrubbing...
On-line monitoring of power curves Andrew Kusiak*, Haiyang Zheng, Zhe Song
Kusiak, Andrew
are constructed using historical wind turbine data. Three power curve models are developed, one by the least by the control system. To analyze the performance of wind turbines, the SCADA data collected at a wind farm has of wind turbines is presented. Turbine performance is captured with a power curve. The power curves
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
Building curves with arbitrary small MOV degree over nite prime elds
International Association for Cryptologic Research (IACR)
Building curves with arbitrary small MOV degree over #12;nite prime #12;elds R. Dupont, A. Enge, F for building ordinary elliptic curves over #12;nite prime #12;elds having arbitrary small MOV degree. The el and Shacham leave it as an open problem to build curves with k = 10). In [22] Miyaji, Nakabayashi and Takano
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
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
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
The Geometric Invariants of Null Cartan Curves Under The Similarity Transformations
Hakan Simsek; Mustafa Özdemir
2015-04-07
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.
Unusual Transitions Made Possible by Superoscillations
Ran Ber; Moshe Schwartz
2015-02-06
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.
Transit light curves with finite integration time: Fisher information analysis
Price, Ellen M.; Rogers, Leslie A.
2014-10-10
Kepler has revolutionized the study of transiting planets with its unprecedented photometric precision on more than 150,000 target stars. Most of the transiting planet candidates detected by Kepler have been observed as long-cadence targets with 30 minute integration times, and the upcoming Transiting Exoplanet Survey Satellite will record full frame images with a similar integration time. Integrations of 30 minutes affect the transit shape, particularly for small planets and in cases of low signal to noise. Using the Fisher information matrix technique, we derive analytic approximations for the variances and covariances on the transit parameters obtained from fitting light curve photometry collected with a finite integration time. We find that binning the light curve can significantly increase the uncertainties and covariances on the inferred parameters when comparing scenarios with constant total signal to noise (constant total integration time in the absence of read noise). Uncertainties on the transit ingress/egress time increase by a factor of 34 for Earth-size planets and 3.4 for Jupiter-size planets around Sun-like stars for integration times of 30 minutes compared to instantaneously sampled light curves. Similarly, uncertainties on the mid-transit time for Earth and Jupiter-size planets increase by factors of 3.9 and 1.4. Uncertainties on the transit depth are largely unaffected by finite integration times. While correlations among the transit depth, ingress duration, and transit duration all increase in magnitude with longer integration times, the mid-transit time remains uncorrelated with the other parameters. We provide code in Python and Mathematica for predicting the variances and covariances at www.its.caltech.edu/?eprice.
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
Validity of the Hadronic Freeze-Out Curve
F. Becattini; M. Bleicher; T. Kollegger; M. Mitrovski; T. Schuster; R. Stock
2011-07-08
We analyze hadro-chemical freeze-out in central Pb+Pb collisions at CERN SPS energies, employing the hybrid version of UrQMD which models hadronization by the Cooper-Frye mechanism, and matches to a final hadron-resonance cascade. We fit the results both before and after the cascade stage using the Statistical Hadronization Model, to assess the effect of the cascade phase. We observe a strong effect on antibaryon yields except anti-{\\Omega}, resulting in a shift in T and {\\mu}_B. We discuss the implications for the freeze-out curve.
Tyre curve estimation in slip-controlled braking
Miller, Jonathan I.; Cebon, David
2015-06-09
identifying a Kalman filter observer for vehicle handling dynamics. IMECHE Part D – J. of Auto. Eng. 2006; 220: 1063–1072. 27. Yi J et al. Emergency braking control with an observer-based dynamic tire/road friction model and wheel angular velocity... also used by Shim et al.15, and Hong et al.16 Unsal and Kachroo17 compared an EKF with a sliding mode observer to estimate vehicle velocity, using this estimated velocity with a nominal slip-friction curve to determine the braking force. The authors...
New Jersey Institute of Technology Invention Disclosure Report
NJIT New Jersey Institute of Technology Invention Disclosure Report -Confidential- Docket Number technology. Answering the below questions as completely as possible will enable the Office of Intellectual, and will help in assessing commercialization options. TYPE OF TECHNOLOGY, PROTECTION & TITLE 1. Please indicate
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
NREL: Technology Deployment - Technology Acceleration
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines lightGeospatial ToolkitSMARTS -Being Replicated AcrossSolarTechnology
Technologies de base Architectures
Grigoras, .Romulus
Technologies de base Architectures Cinquième partie Technologies Web Intergiciels et applications communicantes 1 / 38 #12;Technologies de base Architectures Client-serveur HTTP Présentation Plan 1 Technologies Contenu dynamique 2-tier 3-tier V Technologies Web 2 / 38 #12;Technologies de base Architectures Client
Broadband turbulent spectra in gamma-ray burst light curves
Van Putten, Maurice H. P. M.; Guidorzi, Cristiano; Frontera, Filippo
2014-05-10
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.
Light curves from supernova shock breakout through an extended wind
Ginzburg, Sivan; Balberg, Shmuel [Racah Institute of Physics, The Hebrew University, Jerusalem 91904 (Israel)
2014-01-01
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.
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
2014-10-26
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.
On the Nuclear Rotation Curve of M31
Thomas S. Statler
1999-05-08
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.
Averaged null energy condition and quantum inequalities in curved spacetime
Eleni-Alexandra Kontou
2015-07-22
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
2015-01-01
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...
Incorporation of learning curve costs in acquisition strategy optimization
Loerch, A.
1994-12-31
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.
Fields and fluids on curved non-relativistic spacetimes
Michael Geracie; Kartik Prabhu; Matthew M. Roberts
2015-09-23
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
2015-02-27
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.
Adsorption of annealed branched polymers on curved surfaces
Wagner, Jef; Zandi, Roya
2015-01-01
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...
TECHNOLOGY LICENSE APPLICATION Office of Technology Transfer
Page 1 TECHNOLOGY LICENSE APPLICATION Office of Technology Transfer UT-Battelle, LLC (UT. One of the functions of UT-BATTELLE's Office of Technology Transfer is to negotiate license agreements for such intellectual property with companies for commercial applications of ORNL-developed technologies. Such licenses
APPROPRIATE HOME TECHNOLOGY: Depending on Dependable Technology
Sommerville, Ian
penetrate more and more into people's everyday lives and homes, the `design problem' is not so muchAPPROPRIATE HOME TECHNOLOGY: Depending on Dependable Technology Systems Guy Dewsbury, Karen Clarke 2002 #12;Dewsbury et al (2002): Appropriate Home Technology APPROPRIATE HOME TECHNOLOGY: Depending
A possible explanation of the phase diagram of cuprate superconductors
Tian De Cao
2008-10-16
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
2007-03-11
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
2001-06-04
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.
Hypernovae as possible sources of Galactic positrons
Stephane Schanne; Michel Casse; Bertrand Cordier; Jacques Paul
2004-07-15
INTEGRAL/SPI has recently observed a strong and extended emission resulting from electron-positron annihilation located in the Galactic center region, consistent with the Galactic bulge geometry, without any counterpart at high gamma-ray energies, nor in the 1809 keV $^{26}$Al decay line. In order to explain the rate of positron injection in the Galactic bulge, estimated to more than 10$^{43}$ s$^{-1}$, the most commonly considered positron injection sources are type Ia supernovae. However, SN Ia rate estimations show that those sources fall short to explain the observed positron production rate, raising a challenging question about the nature of the Galactic positron source. In this context, a possible source of Galactic positrons could be supernova events of a new type, as the recently observed SN2003dh/GRB030329, an exploding Wolf-Rayet star (type Ic supernova) associated with a hypernova/gamma-ray burst; the question about the rate of this kind of events remains open, but could be problematically low. In this paper, we explore the possibility of positron production and escape by such an event in the framework of an asymmetric model, in which a huge amount of $^{56}$Ni is ejected in a cone with a very high velocity; the ejected material becomes quickly transparent to positrons, which spread out in the interstellar medium.
Rodier, Caroline J.; Shaheen, Susan
2007-01-01
Dealing with Truck Parking Demands. National CooperativeAdequacy of Commercial Truck Parking Facilities – TechnicalAdequacy of Commercial Truck Parking Facilities – Technical
Shaheen, Susan; Rodier, Caroline J.
2007-01-01
Drivers’ response to parking guidance and informationAdequacy of Commercial Truck Parking Facilities – TechnicalPartners for Adequate Parking Facilities Initiative Final
Rodier, Caroline J.; Shaheen, Susan
2007-01-01
S. A, R. P. Haas, J. W. Trombly, R. H. Cross III, J. E.17, No. 2, pp. 89-104. Trombly, J.W. (2003). Dealing within truck parking spaces (Trombly, 2003). Shortages of public
Shaheen, Susan; Rodier, Caroline J.
2007-01-01
of Transportation, 2005. 7. Trombly, J.W. Dealing with TruckS. A, R. P. Haas, J. W. Trombly, R. H. Cross III, J. E.truck parking problems (Trombly, 2003). Using “ITS to expand
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
A Parameter Study of Type II Supernova Light Curves Using 6 M_odot He Cores
Timothy R. Young
2004-09-13
Results of numerical calculations of Type II supernova light curves are presented. The model progenitor stars have 6 $M{_\\odot}$ cores and various envelopes, originating from a numerically evolved 20 $M{_\\odot}$ star. Five parameters that affect the light curves are examined: the ejected mass, the progenitor radius, the explosion energy, the $^{56}$Ni mass, and the extent of $^{56}$Ni mixing. The following affects have been found: 1) the larger the progenitor radius the brighter the early--time light curve, with little affect on the late--time light curve, 2) the larger the envelope mass the fainter the early light curve and the flatter the slope of the late light curve, 3) the larger the explosion energy the brighter the early light curve and the steeper the slope of the late light curve, 4) the larger the $^{56}$Ni mass the brighter the overall light curve after 20 to 50 days, with no affect on the early light curve, 5) the more extensive the $^{56}$Ni mixing the brighter the early light curve and the steeper the late light curve. The primary parameters affecting the light curve shape are the progenitor radius and the ejected mass. The secondary parameters are the explosion energy, $^{56}$Ni mass and $^{56}$Ni mixing. I find that while in principle the general shape and absolute magnitude of a light curve indicate a unique set of parameters, in practice it is difficult to avoid some ambiguity in the parameters. I find that the nickel--powered diffusion wave and the recombination of helium produce a prominent secondary peak in all our calculations. The feature is less prominent when compositional mixing, both $^{56}$Ni mixing and mixing between the hydrogen and helium layers, occurs. The model photospheric temperatures and velocities are presented, for comparison to observation.
Oudot, B; Blobaum, K M; Wall, M A; Schwartz, A J
2006-07-21
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).
Possibility of synthesizing doubly closed superheavy nucleus
Y. Aritomo
2006-09-16
The possibility of synthesizing a doubly magic superheavy nucleus, $^{298}114_{184}$, is investigated on the basis of fluctuation-dissipation dynamics. In order to synthesize this nucleus, we must generate more neutron-rich compound nuclei because of the neutron emissions from excited compound nuclei. The compound nucleus $^{304}114$ has two advantages to achieving a high survival probability. First, because of small neutron separation energy and rapid cooling, the shell correction energy recovers quickly. Secondly, owing to neutron emissions, the neutron number of the nucleus approaches that of the double closed shell and the nucleus obtains a large fission barrier. Because of these two effects, the survival probability of $^{304}114$ does not decrease until the excitation energy $E^{*}= 50$ MeV. These properties lead to a rather high evaporation reside cross section.
The Shape of M Dwarf Flares in Kepler Light Curves
Davenport, James R A
2015-01-01
Ultra-precise light curves from Kepler provide the best opportunity to determine rates and statistical properties of stellar flares. From 11 months of data on the active M4 dwarf, GJ 1243, we have built the largest catalog of flares for a single star: over 6100 events. Combining 885 of our most pristine flares, we generated an empirical white-light flare template. This high-fidelity template shows a rapid initial rise, and two distinct exponential cooling phases. This template is useful in constraining flare energies and for improved flare detection in many surveys. Complex, multi-peaked events are more common for higher energy flares in this sample. Using our flare template we characterize the structure of complex events. In this contributed talk, I presented results from our boutique study of GJ 1243, and described an expanded investigation of the structure of complex flares and their connection to solar events.
Fractal Diffusion in Smooth Dynamical Systems with Virtual Invariant Curves
B. V. Chirikov; V. V. Vecheslavov
2002-02-06
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
2015-01-01
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...
Static spherically symmetric solutions in mimetic gravity: rotation curves & wormholes
Myrzakulov, Ratbay; Vagnozzi, Sunny; Zerbini, Sergio
2015-01-01
In this work, we analyse static spherically symmetric solutions in the framework of mimetic gravity, an extension of general relativity where the conformal degree of freedom of gravity is isolated in a covariant fashion. Here we extend previous works by considering in addition a potential for the mimetic field. An appropriate choice of such potential allows for the reconstruction of a number of interesting cosmological and astrophysical scenarios. We explicitly show how to reconstruct such a potential for a general static spherically symmetric space-time. A number of applications and scenarios are then explored, among which traversable wormholes. Finally, we analytically reconstruct potentials which leads to solutions to the equations of motion featuring polynomial corrections to the Schwarzschild spacetime. Accurate choices for such corrections could provide an explanation for the inferred flat rotation curves of spiral galaxies within the mimetic gravity framework, without the need for particle dark matter.
Curved track segment finding using Tiny Triplet Finder (TTF)
Wu, Jin-Yuan; Wang, M.; Gottschalk, E.; Shi, Z.; /Fermilab
2006-11-01
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
2015-07-15
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
2015-01-01
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.
Spinless Aharonov-Bohm problem in curved space
Edilberto O. Silva; Sérgio C. Ulhoa; Fabiano M. Andrade; Cleverson Filgueiras; R. G. G. Amorin
2015-02-25
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.
Graphene: QFT in curved spacetimes close to experiments
Alfredo Iorio
2013-04-09
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)
2014-09-28
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.
Ward, P.P.; Dybwad, G.L.
1995-03-01
The Plasma Technology Directory has two main goals: (1) promote, coordinate, and share plasma technology experience and equipment within the Department of Energy; and (2) facilitate technology transfer to the commercial sector where appropriate. Personnel are averaged first by Laboratory and next by technology area. The technology areas are accelerators, cleaning and etching deposition, diagnostics, and modeling.
POSSIBLE CHROMOSPHERIC ACTIVITY CYCLES IN AD LEO
Buccino, Andrea P.; Petrucci, Romina; Mauas, Pablo J. D.; Jofré, Emiliano
2014-01-20
AD Leo (GJ 388) is an active dM3 flare star that has been extensively observed both in the quiescent and flaring states. Since this active star is near the fully convective boundary, studying its long-term chromospheric activity in detail could be an appreciable contribution to dynamo theory. Here, using the Lomb-Scargle periodogram, we analyze the Ca II K line-core fluxes derived from CASLEO spectra obtained between 2001 and 2013 and the V magnitude from the ASAS database between 2004 and 2010. From both of these totally independent time series, we obtain a possible activity cycle with a period of approximately seven years and a less significant shorter cycle of approximately two years. A tentative interpretation is that a dynamo operating near the surface could be generating the longer cycle, while a second dynamo operating in the deep convection zone could be responsible for the shorter one. Based on the long duration of our observing program at CASLEO and the fact that we observe different spectral features simultaneously, we also analyze the relation between simultaneous measurements of the Na I index (R{sub D}{sup ?}), H?, and Ca II K fluxes at different activity levels of AD Leo, including flares.
Technology Application Centers: Facilitating Technology Transfer
Kuhel, G. J.
1994-01-01
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...
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
An evaluation of alternative horizontal curve design approaches for rural two-lane highways
Voigt, Anthony Paul
1995-01-01
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...
Maitland, Padma
2013-01-01
study of architecture through references to “Technology andhis new “Architecture for Man” that combines technology withArchitecture and Minarc Architects, two contemporary designers that are pushing prefab technologies
Hall, Bronwyn H.; Khan, Beethika
2003-01-01
Firm Diffusion of New Technology: A Real Options Model. ”and the Adoption of New technology: Evidence from the U.S.affect whether or not new technologies are successful, the
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
Hall, Bronwyn H.; Khan, Beethika
2003-01-01
Firm Diffusion of New Technology: A Real Options Model. ”and the Adoption of New technology: Evidence from the U.S.the Diffusion of New Technology in the Banking Industry. ”
Is It Possible to Predict Strong Earthquakes?
Yuriy S. Polyakov; Gennadiy V. Ryabinin; Anna B. Solovyeva; Serge F. Timashev
2014-07-04
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
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...
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)
2007-09-15
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.
Ash, John Patrick
2015-01-01
to Computationally Efficient Method . . . . . Minimizing theTracks: Optimal vs an Efficient B´ ezier Curve Path MASTERproposes a computationally efficient path planning algorithm
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
2007-01-01
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.
5d $E_n$ Seiberg-Witten curve via toric-like diagram
Sung-Soo Kim; Futoshi Yagi
2015-06-16
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.
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
2014-01-01
Stretching Curved Flexible Electronics and Optoelectronicsin incorporating flexible electronics or optoelectronics onin so-called flexible electronics and optoelectronics for a
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
2007-01-01
the combined cycle gas turbine—an experience curve analysis.reduction (SCR) systems, gas turbine combined cycle (GTCC)catalytic reduction (SCR) Gas turbine combined cycle (GTCC)
Timescale stretch parameterization of Type Ia supernova B-band light curves
2001-01-01
the light curve of Type Ia supernovae discovered by theof the high-redshift supernovae. This work was supported inobjects. Subject headings: supernovae: general – cosmology:
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 Readiness Assessment Report
Office of Environmental Management (EM)
of management decisions by identifying key technologies that have been demonstrated to work or by highlighting immature or unproven technologies that might result in increased...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
about promising new and underutilized energy-saving technologies available for Federal and commercial building sector deployment. To identify promising technologies,...
Building Technologies Office Overview
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Roland Risser Director, Building Technologies Office Building Technologies Office Overview Our Homes and Buildings Use 40% of Our Nation's Energy and 75% of Electricity Energy Use...
Hydropower Program Technology Overview
Not Available
2001-10-01
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.
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...
Building Technologies Office Overview
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Technologies Office Roland Risser Director, Building Technologies Office National Energy Consumption 40% 60% Reducing consumption or improving performance calls for cutting-edge...
Essays on University Technology Management
Drivas, Kyriakos
2011-01-01
of university technology management and their implicationson University Technology Management by Kyriakos Drivas Aon University Technology Management by Kyriakos Drivas
Morgantown Energy Technology Center, technology summary
Not Available
1994-06-01
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.
Meininger, Aaron G.
2012-01-01
138 B.1 Africa: Wind Power Technology Di?156 B.7 World: Wind Power Technology Di?154 B.2 Asia: Wind Power Technology Di?
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
2007-01-01
and storage costs) Technology Cost of electricity (excludingstages of commercialization Technology Capital cost Flue gasPlant type and technology Capital cost $/kW NGCC plant
2009 Wind Technologies Market Report
Wiser, Ryan
2010-01-01
land- based wind energy technology. 2009 Wind TechnologiesRenewable Energy 2009 WIND TECHNOLOGIES MARKET REPORT AUGUSTfor a variety of energy technologies, including wind energy.
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...
A Table of Areas Under Disease Progress Curves.
Johnson, Dennis A.; Wilcoxson, Roy D.
1980-01-01
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...
Simultaneous emergence of curved spacetime and quantum mechanics
S S De; F Rahaman
2014-12-10
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.
A Superstring Theory in Four Curved Space-Time Dimensions
I. Bars; K. Sfetsos
1991-11-20
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.
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.
2014-03-28
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.
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 Verification & Technology Solutions Queens College ~ Office of Information Technology ~ Training & Technology Solutions 718
Possible features of galactic halo with electric field and observational constraints
Koushik Chakraborty; Farook Rahaman; Saibal Ray; Arka Nandi; Nasarul Islam
2014-12-15
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.
Reply to Davies: Hydraulic fracturing remains a possible mechanism for
Jackson, Robert B.
LETTER Reply to Davies: Hydraulic fracturing remains a possible mechanism for observed methane mechanisms were leaky gas well casings and the possibility that hydraulic fracturing might generate new- knowledged the possibility of hydraulic fracturing playing a role. Is it possible that hydraulic fracturing
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
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
Predictive Maintenance Technologies
Broader source: Energy.gov [DOE]
Several diagnostic technologies and best practices are available to assist Federal agencies with predictive maintenance programs.
Hydrogen delivery technology roadmap
None, None
2005-11-15
Document describing plan for research into and development of hydrogen delivery technology for transportation applications.
Northwest Regional Technology Center
management and public safety professionals to define and prioritize technology needs. Coordinate and leadNorthwest Regional Technology Center for Homeland Security The Northwest Regional Technology Center and deployment of technologies that are effective homeland security solutions for the region, and accelerate
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
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
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
Motion of Spin 1/2 Massless Particle in a Curved Spacetime. I. Lagrangian Approach
A. T. Muminov
2008-02-18
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
2007-09-28
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.
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
Carbon emissions in China: How far can new efforts bend the curve?
Carbon emissions in China: How far can new efforts bend the curve? Xiliang Zhang, Valerie J future; and improve methods to model, monitor and verify greenhouse gas emissions and climatic impacts emissions in China: How far can new efforts bend the curve? Xiliang Zhang§* , Valerie J. Karplus , Tianyu Qi
Analysis of Industrial Microgrid Power Curves Based on the Theory of Stochastic Variables for
Noé, Reinhold
Analysis of Industrial Microgrid Power Curves Based on the Theory of Stochastic Variables--Design and control of microgrids require a wide range of considerations and information. A main issue is the sizing, which help to assess power curves and to dimension components of microgrids. I. INTRODUCTION The energy
Chamroukhi, Faicel
in this paper. It consists of a regression model with a discrete hidden logistic process which is adapted generative model, a curve discrimination rule is derived using the maximum a posteriori rule. The proposed and classification. & 2010 Elsevier B.V. All rights reserved. 1. Introduction Curve valued or functional data sets
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
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
Curved EFC/F-BAR-Domain Dimers Are Joined End to End into a Filament for
Zhijie, Liu
Curved EFC/F-BAR-Domain Dimers Are Joined End to End into a Filament for Membrane Invagination a gently curved helical-bundle dimer of $220 A° in length, which forms filaments through end that impaired filament formation also impaired membrane tubulation and cell membrane invagination. Furthermore
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
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
A Probabilistic Graphical Approach to Computing Electricity Price Duration Curves under Price and
Oren, Shmuel S.
A 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 of the electricity price considered as a random variable. The price uncertainty comes both from the demand side
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
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 and current, which can be readily obtained using standard PV monitoring equipment; measured short circuit
Technology Transfer through the Pipeline and Other Channels: Preprint
Benner, J.; Hulstrom, R.; Sheldon, P.
2001-10-01
Presented at the 2001 NCPV Program Review Meeting: Examines some success stories of tech transfer and lessons learned from these experiences that point to possible improvements to expedite transfer to future technologies.
Quantum Inequality Restrictions on Negative Energy Densities in Curved Spacetimes
Michael John Pfenning; L. H. Ford
1998-05-11
In quantum field theory, there exist states in which the expectation value of the energy density for a quantized field is negative. These negative energy densities lead to many problems. Although quantum field theory introduces negative energies, it also provides constraints in the form of quantum inequalities (QI's). These uncertainty principle-type relations limit the magnitude and duration of any negative energy. We derive a general form of the QI on the energy density for both the quantized scalar and electromagnetic fields in static curved spacetimes. In the case of the scalar field, the QI can be written as the Euclidean wave operator acting on the Euclidean Green's function. Additionally, a small distance expansion on the Green's function is used to derive the QI in the short sampling time limit. It is found that the QI in this limit reduces to the flat space form with subdominant correction terms which depend on the spacetime geometry. Several example spacetimes are studied in which exact forms of the QI's can be found. These include the three- and four-dimensional static Robertson-Walker spacetimes, flat space with perfectly reflecting mirrors, Rindler and static de Sitter space, and the spacetime outside a black hole. Finally, the application of the quantum inequalities to the Alcubierre warp drive spacetime leads to strict constraints on the thickness of the negative energy region needed to maintain the warp drive. Under these constraints, we discover that the total negative energy required exceeds the total mass of the visible universe by a hundred billion times.
Stoleriu, Laurentiu; Chakraborty, Pradip; Hauser, Andreas; Enachescu, Cristian
2015-01-01
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...
Phase structure and critical processes of spectral curves in large N dualities
Gabriel Álvarez; Luis Martínez Alonso; Elena Medina
2013-01-30
We examine the phase structure and the critical processes of the spectral curves that arise in the study of large N dualities between supersymmetric Yang-Mills theories and string models on local Calabi-Yau manifolds. These spectral curves are determined by a set of complex partial 't Hooft parameters and a system of cuts given by projections on the spectral curve of minimal supersymmetric cycles of the underlying Calabi-Yau manifold. Using a combination of analytical and numerical methods we give a complete description of the one-cut phase in the cubic model, determine the analytic condition satisfied by critical one-cut spectral curves, and give an algorithm to calculate the two-cut spectral curves of the cubic model for generic values of the partial 't Hooft parameters.
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
Vehicle Technologies Office: 2008 Advanced Vehicle Technology...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Advanced Vehicle Technology Analysis and Evaluation Activities and Heavy Vehicle Systems Optimization Program Annual Progress Report Well-to-Wheels Analysis of Energy Use and...
Vehicle Technologies Office: 2009 Advanced Vehicle Technology...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Advanced Vehicle Technology Analysis and Evaluation Activities and Heavy Vehicle Systems Optimization Program Annual Progress Report 2009avtaehvso.pdf More Documents &...
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))
1993-01-10
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.
1993-05-01
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.
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
SHARED TECHNOLOGY TRANSFER PROGRAM
GRIFFIN, JOHN M. HAUT, RICHARD C.
2008-03-07
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.
'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)
2014-06-10
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)
2013-08-10
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.
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
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
A new approach for magnetic curves in 3D Riemannian manifolds
Bozkurt, Zehra Gök, Ismail Yayl?, Yusuf Ekmekci, F. Nejat
2014-05-15
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.
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.
Science and technology for industrial ecology
Gilmartin, T.J.; Allenby, B.R.
1996-07-10
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.
Characterization, Monitoring, and Sensor Technology Integrated Program (CMST-IP). Technology summary
Not Available
1994-04-01
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.
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
Massachusetts Institute of Technology
ChemE Massachusetts Institute of Technology Department of Chemical Engineering Undergraduate technology, chemical engineers play a role in almost every industry and they collaborate with all types, creating and improving pharmaceuticals, fuels, polymers, plastics, cosmetics, cereals and more." Klavs
SIMULATING EVOLUTION OF TECHNOLOGY
SIMULATING EVOLUTION OF TECHNOLOGY: AN AID TO ENERGY POLICY ANALYSIS A CASE STUDY OF STRATEGIES Approval Name: John Nyboer Degree: Doctor of Philosophy Title of Thesis: Simulating Evolution of Technology
Technology Readiness Assessment Guide
Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]
2011-09-15
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. Supersedes DOE G 413.3-4.
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.
1993-01-01
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 Business Incubation Programme
1 Technology Business Incubation Programme Ms. Kimmie Wong Assistant Manager Incubation Admission and organization. Industry Technology Biotechnology Clusters IT & Telecomm. Pharmaceutical Precision Engg. Chinese Lab Premises Technical Support Facilities Technical and Management Assistance Management and Technical
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
17all en CNS, UT chemical sensing technology wins R&D 100 Award http:www.y12.doe.govnewspress-releasescns-ut-chemical-sensing-technology-wins-rd-100-award
Carbon Fiber Technology Facility
Broader source: Energy.gov [DOE]
2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting
Broader source: Energy.gov [DOE]
Presentation by Charles Page (Air Products & Chemicals, Inc.) for the Membrane Technology Workshop held July 24, 2012
States & Emerging Energy Technologies
Office of Energy Efficiency and Renewable Energy (EERE)
This presentation, given through the DOE's Technical Assitance Program (TAP), provides information on States & Emerging Energy Technologies.
Technology in water conservation
Finch, Dr. Calvin
2013-01-01
?? percent to ?? percent. Water reuse systems treat wastewater by various technologies including ?ltering, bioremediation and ozone exposure. ?ese technologies can involve billions of gallons of wastewater ? such as in a municipal recycling e... 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 behavioral exercise and urge...
Advanced Propulsion Technology Strategy
Broader source: Energy.gov [DOE]
GM is also developing new classes of electrically driven vehicles, leveraging technology first used in their hybrids.
Office of Energy Efficiency and Renewable Energy (EERE)
Check out a few stories of companies who have taken a breakthrough energy technology and run with it.
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 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...
Vehicle Technologies Office: 2010 Fuel Technologies R&D Annual...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Vehicle Technologies Office: 2010 Fuel Technologies R&D Annual Progress Report The Fuels Technologies subprogram supports fuels and lubricants research and development (R&D)...
EM Engineering & Technology Roadmap and Major Technology Demonstration...
Office of Environmental Management (EM)
Processing Office of Engineering and Technology April 2008 EM Engineering & Technology Roadmap and Major Technology Demonstrations Introduction Progress made in EM cleanup...
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...
Does Doctrine Drive Technology or Does Technology Drive Doctrine?
Blasko, Dennis
2010-01-01
Policy Brief No. 4 September 2010 Does Doctrine DriveTechnology or Does Technology Drive Doctrine? Dennis Blaskoone way. However, technology does not determine strat- egy.
Does Doctrine Drive Technology or Does Technology Drive Doctrine?
Blasko, Dennis
2010-01-01
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
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 Point...
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...
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
Department of Science, Technology, &
Huang, Wei
Developing Leaders of Innovation Department of Science, Technology, & Society #12;Understanding the relationship between technology and society is crucial to becoming a successful leader in any field. #12;Our Students The University of Virginia Department of Science, Technology, and Society offers a comprehensive
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
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
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 Newton Group, La Palma: Joint Astronomy Centre, Hawaii. ASTeC Science Highlights 2009 - 2010 Science
Technology Performance Exchange
2015-09-01
To address the need for accessible, high-quality data, the Department of Energy has developed the Technology Performance Exchange (TPEx). TPEx enables technology suppliers, third-party testing laboratories, and other entities to share product performance data. These data are automatically transformed into a format that technology evaluators can easily use in their energy modeling assessments to inform procurement decisions.
NORTHWEST REGIONAL TECHNOLOGY CENTER
NORTHWEST REGIONAL TECHNOLOGY CENTER for Homeland Security Northwest Regional Technology Center May 2015 | 1 AROUND THE REGION IN HOMELAND SECURITY The Northwest Regional Technology Center (NWRTC.S. Army Cyber Command; and Michael Echols, Director, Cyber Joint Program Management Office National
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
Transmission Enhancement Technology Report
a recommendation of the most cost-effective methods and technologies to enhance electricity transmission from a review of methods and technologies with potential to enhance electricity transmission capability-traditional methods and technologies to increase the capacity of the high voltage electric power transmission system
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.
2003-03-01
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.
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 ...
On secondary loops in LAOS via self-intersection of Lissajous–Bowditch curves
Ewoldt, Randy H.
When the shear stress measured in large amplitude oscillatory shear (LAOS) deformation is represented as a 2-D Lissajous–Bowditch curve, the corresponding trajectory can appear to self-intersect and form secondary loops. ...
DEVELOPING FLOW AND HEAT TRANSFER IN STRONGLY CURVED DUCTS OF RECTANGULAR CROSS-SECTION
Yee, G.
2010-01-01
123. HUMPHREY, J.A.C. , "Flow in Ducts with Curvature andViscous Flow in Curved Ducts of Rectangular Cross-Sections,"Laminar Flow in a Square Duct of Strong Curvature,1I J.
Multi-Factor Model of Correlated Commodity - Forward Curves for Crude Oil and Shipping Markets
Ellefsen, Per Einar
2009-01-01
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 ...
MEASUREMENT OF THE SHOCK-HEATED MELT CURVE OF LEAD USING PYROMETRY AND REFLECTOMETRY
D. Partouche-Sebban and J. L. Pelissier, Commissariat a` l'Energie Atomique,; F. G. Abeyta, Los Alamos National Laboratory; W. W. Anderson, Los Alamos National Laboratory; M. E. Byers, Los Alamos National Laboratory; D. Dennis-Koller, Los Alamos National Laboratory; J. S. Esparza, Los Alamos National Laboratory; S. D. Borror, Bechtel Nevada; C. A. Kruschwitz, Bechtel Nevada
2004-01-01
Data on the high-pressure melting temperatures of metals is of great interest in several fields of physics including geophysics. Measuring melt curves is difficult but can be performed in static experiments (with laser-heated diamond-anvil cells for instance) or dynamically (i.e., using shock experiments). However, at the present time, both experimental and theoretical results for the melt curve of lead are at too much variance to be considered definitive. As a result, we decided to perform a series of shock experiments designed to provide a measurement of the melt curve of lead up to about 50 GPa in pressure. At the same time, we developed and fielded a new reflectivity diagnostic, using it to make measurements on tin. The results show that the melt curve of lead is somewhat higher than the one previously obtained with static compression and heating techniques.
Hypergeometric functions over finite fields and their relations to algebraic curves.
Vega Veglio, Maria V.
2010-07-14
Classical hypergeometric functions and their relations to counting points on curves over finite fields have been investigated by mathematicians since the beginnings of 1900. In the mid 1980s, John Greene developed the ...
Nonlinearities and Adaptation of Color Vision from Sequential Principal Curves Analysis
Malo, Jesus
Laparra, Sandra Jim´enez, Gustavo Camps-Valls and Jes´us Malo Image Processing Laboratory (IPL a single Principal Curve. Moreover, in order to reproduce the empirical adaptation reported under D65
Driver mental workload requirements on horizontal curves based on occluded vision test measurements
Shafer, Mark Anthony
1994-01-01
This thesis documents an evaluation of driver mental workload requirements on horizontal curves based on occluded vision test measurements. Driver workload is an important concept in the design of highway systems. A ...
Aperture Photometry and Transit Light Curve Analysis D. Cohen and E. Jensen
Cohen, David
Aperture Photometry and Transit Light Curve Analysis D. Cohen and E the Relative Photometry2 instructions. Context This follows on to the WASP-11. You can load them into an image stack in AIJ and open up the photometry
Generating Light Curves from Forced PSF-fit Photometry on PTFIDE Difference-images
Masci, Frank
1 Generating Light Curves from Forced PSF-fit Photometry on PTFIDE ancillary forced Aperture Photometry 6 Other quality checks for PSF-fit photometry Putting it all together: conversion to magnitudes 9 ACtoDC Photometry
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 ...
QUIZ 2 (IN 10 MINUTES.) (1) Find the equation of integral curves of ...
2015-01-27
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 ...
Shporer, Avi
2015-01-01
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...
Development of a Discharge-Stage Rating Curve for Strawberry Creek
Hunt, Lisa
2011-01-01
Stage Rating Curve for Strawberry Creek Lisa Hunt ReferencesCharbonneau, R. 1987. Strawberry Creek Management Plan,R. and V.H. Resh. 1992. Strawberry Creek on the University
Measuring Type Ia Supernova Distances and Redshifts From Their Multi-band Light Curves
Kim, Alex G.; Miquel, Ramon
2007-01-01
curve, http://supernovae.in2p3.fr/ ? guy/salt/index.htmlfor large numbers of supernovae; so many that it would becosmology:distance scale, supernovae:general Introduction
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)
2014-02-20
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.
Power Angle & Time Domain Plots 1.0 The powerangle curves
McCalley, James D.
1 Power Angle & Time Domain Plots 1.0 The powerangle curves Consider a generator connected, synchronous reference, is relative speed and is zero if m=R. Now we move through the sequence
Hypergeometric functions over finite fields and relations to modular forms and elliptic curves
Fuselier, Jenny G.
2009-05-15
The theory of hypergeometric functions over finite fields was developed in the mid- 1980s by Greene. Since that time, connections between these functions and elliptic curves and modular forms have been investigated by ...
Spontaneously curving trajectory in Brownian motion of particle with broken symmetry
Nan Sheng; YuSong Tu; ZuoWei Wang; HaiPing Fang
2015-08-31
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.
Intersection theory on the moduli space of holomorphic curves with Lagrangian boundary conditions
Solomon, Jake P. (Jake Philip)
2006-01-01
We define a new family of open Gromov-Witten type invariants based on intersection theory on the moduli space of pseudoholomorphic curves of arbitrary genus with boundary in a Lagrangian submanifold. We assume the Lagrangian ...
Is a curved flight path in SAR better than a straight one?
Plamen Stefanov
2012-12-10
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.,.
Angel Restrepo, Juan Alejandro
2000-01-01
. 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...
Building Technologies Office Window and Envelope Technologies...
Broader source: Energy.gov (indexed) [DOE]
Technologies R&D Program Karma Sawyer, Ph.D. karma.sawyer@ee.doe.gov BTO Goal Reduce building energy use by 50% in 2030, compared to the "business-as- usual" energy consumption...
Technology Investment Roadmap 2012 -2017
Hickman, Mark
Technology Investment Roadmap 2012 - 2017 20 February 2012 #12;2 Contents Introduction & Overview ............................................................................................ 8 Trend 3: Technology Enabled Learning .................................................................................................... 16 2. Technology enabled learning and teaching
Technology Policy and Economic Growth
Borrus, Michael; Stowsky, Jay
1997-01-01
economic growth) and the Pentagon’s Technology Reinvestment20 Tassey, Technology and Economic Growth: Implications forTechnology Policy and Economic Growth Michael Borrus Jay
2008 Solar Technologies Market Report
Price, S.
2010-01-01
Concentrating Solar Power—Technology, Cost, and Markets.Concentrating Solar Power—Technology, Cost, and Markets.Concentrating Solar Power—Technology, Cost, and Markets.
2011 Wind Technologies Market Report
Bolinger, Mark
2013-01-01
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
2012-01-01
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
2014-01-01
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
High Impact Technology Hub- Results
Broader source: Energy.gov [DOE]
Highlights, outcomes and activities to support the adoption of High Impact Technologies. Technology Highlights preview early results from current technology demonstrations. Case Studies overview...
Advanced Integrated Systems Technology Development
2013-01-01
Renewable Energy Technologies Transportation Advanced Integrated Systems Technology Development is the final report for the Advanced Integrated Systems Technology Development project (