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Sample records for brent futures curve

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

    E-Print Network [OSTI]

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

    2007-01-01

    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.

  2. Vibrational Thermodynamics of Materials Brent Fultz

    E-Print Network [OSTI]

    Fultz, Brent

    Vibrational Thermodynamics of Materials Brent Fultz California Institute of Technology, W. M. Keck Laboratory, Pasadena CA 91125 USA July 6, 2009 Abstract. The literature on vibrational thermodynamics of harmonic phonons in alloys are organized into thermodynamic models for unmixing and ordering

  3. Saving NATO's Foundation John Deutch, Arnold Kanter, and Brent Scowcroft

    E-Print Network [OSTI]

    Deutch, John

    Saving NATO's Foundation John Deutch, Arnold Kanter, and Brent Scowcroft FOREIGN AFFAIRS Volume 78--notablyinformationtechnologythatappliestocommand, control, communication, and intelligence. The air war in Kosovo [54] Saving NATO's Foundation John Deutch

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

    E-Print Network [OSTI]

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

    2007-01-01

    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)

  5. COMPUTER SCIENCE (Div. III) Chair, Associate Professor BRENT HEERINGA

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    1 COMPUTER SCIENCE (Div. III) Chair, Associate Professor BRENT HEERINGA Professors: BAILEY, DANYLUK of computers are the goals of the discipline of computer science. A sample of the areas of research investigated by the Williams Department of Computer Science alone illustrates the vast range of topics

  6. Scalable Ethernet for Data Centers Brent Stephens , Alan Cox , Wes Felter , Colin Dixon , and

    E-Print Network [OSTI]

    Mellor-Crummey, John

    PAST Scalable Ethernet for Data Centers Brent Stephens , Alan Cox , Wes Felter , Colin Dixon for Data Centers 1 / 38 #12;PAST . . . . . . is a large flat Ethernet network for using arbitrary topologies . . . is the only data center network that meets all of our requirements Brent Stephens PAST

  7. Brent Run Generating Station Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin:PontiacInformation Forest Service ClimateI JumpBrent Run

  8. Learning Curve

    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.

  9. Haptic Feedback and Human Performance in a Dynamic Task Felix Huang R. Brent Gillespie Art Kuo

    E-Print Network [OSTI]

    Gillespie, Brent

    by human subjects executing a dynamic task. We present the results of experiments involving the control1 Haptic Feedback and Human Performance in a Dynamic Task Felix Huang R. Brent Gillespie Art Kuo of a ball and beam. Human subjects perform position targeting of the ball through hand operation of the beam

  10. July 2, 2014, Human Resource Services 2014-2015 Salary Increase Program (Brent)

    E-Print Network [OSTI]

    Sin, Peter

    #12;July 2, 2014, Human Resource Services #12;Agenda · 2014-2015 Salary Increase Program (Brent) · Important Dates #12;2014-2015 Salary Increase Program #12;$500 One-time Payment All faculty, staff who would like to view the additional payments. · The instruction guide can be found at http://training.hr.ufl.edu/instructionguides/Salary

  11. Quantum curves

    E-Print Network [OSTI]

    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.

  12. Heavy-Duty Truck Emissions in the South Coast Air Basin of Gary A. Bishop,* Brent G. Schuchmann,

    E-Print Network [OSTI]

    Denver, University of

    Heavy-Duty Truck Emissions in the South Coast Air Basin of California Gary A. Bishop,* Brent G, Colorado 80208, United States ABSTRACT: California and Federal emissions regulations for 2007 and newer of nitrogen spurring the introduction of new aftertreatment systems. Since 2008, four emission measurement

  13. Deformation-Induced Color Changes in Mechanochromic Polyethylene Brent R. Crenshaw, Mark Burnworth, Devang Khariwala, Anne Hiltner,

    E-Print Network [OSTI]

    Mather, Patrick T.

    Deformation-Induced Color Changes in Mechanochromic Polyethylene Blends Brent R. Crenshaw, Mark and systematic investigation of mechanochromic, melt-processed blends between a series of polyethylenes (PE-density polyethylene (LLDPE) of moderately high density (0.94 g cm-3). In samples that were slowly cooled from the melt

  14. Brent Draney!

    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 OBransen Plasma Asher An O2 RF plasmaBreakthroughBrendan

  15. Brent Draney

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits &Bradbury Science Museum - ScienceBrendan M. White About ESnet

  16. Curved Space or Curved Vacuum?

    E-Print Network [OSTI]

    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.

  17. Curves and The Photon

    E-Print Network [OSTI]

    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.

  18. Influence of relative sea level on facies, stacking patterns and reservoir heterogeneity: Middle Jurassic Brent group, UK North Sea

    SciTech Connect (OSTI)

    Jennette, D.C. (Exxon Production Research Co., Houston, TX (United States))

    1996-01-01

    The lower Brent Group, above the genetically distinct lowstand deposits of the Broom Formation, is a progradational sequence set made up of the lower- shoreface Rannoch, the upper-shoreface and beach-plain Etive, and the back-barrier Lower Ness Formations. Much of the reservoir heterogeneity in this sandstone-rich succession can be attributed to facies and stacking-pattern variations within higher frequency systems tracts. Highstand systems tracts have strongly offlapping progradational geometries. Sweep efficiency is influenced by: (1) seaward-dipping, mica-rich bed-sets; (2) high-quality ebb tidal-delta sandstone bodies; and (3) the sharp increase in reservoir quality at the sub-horizontal base of the upper shoreface. The increased permeability leads water in the Etive to overrun oil in the Rannoch. Horizontal wells are targeting unswept reserves in the lower-permeability facies. Relative falls in sea level punctuated highstand progradation and led to the subaerial erosion of the Etive and Rannoch formations. Lowstand deposits are contained within incised valleys and consist of fluvial sandstones, coastal-plain mudstones and coal. Well-performance anomalies and abrupt variations in sandstone thickness are associated with the heterogeneous valley-fills. Shoreface sedimentation resumed during transgressive systems tracts. High sediment flux enabled the nearshore system to stack aggradationally. Diachronous lithostratigraphy, aggradation of the heterolithic back-barrier Ness Formation, interbedding of Rannoch facies in the lower Etive and increased carbonate cement in the lower shoreface Rannoch mark this systems tract.

  19. Influence of relative sea level on facies, stacking patterns and reservoir heterogeneity: Middle Jurassic Brent group, UK North Sea

    SciTech Connect (OSTI)

    Jennette, D.C. [Exxon Production Research Co., Houston, TX (United States)

    1996-12-31

    The lower Brent Group, above the genetically distinct lowstand deposits of the Broom Formation, is a progradational sequence set made up of the lower- shoreface Rannoch, the upper-shoreface and beach-plain Etive, and the back-barrier Lower Ness Formations. Much of the reservoir heterogeneity in this sandstone-rich succession can be attributed to facies and stacking-pattern variations within higher frequency systems tracts. Highstand systems tracts have strongly offlapping progradational geometries. Sweep efficiency is influenced by: (1) seaward-dipping, mica-rich bed-sets; (2) high-quality ebb tidal-delta sandstone bodies; and (3) the sharp increase in reservoir quality at the sub-horizontal base of the upper shoreface. The increased permeability leads water in the Etive to overrun oil in the Rannoch. Horizontal wells are targeting unswept reserves in the lower-permeability facies. Relative falls in sea level punctuated highstand progradation and led to the subaerial erosion of the Etive and Rannoch formations. Lowstand deposits are contained within incised valleys and consist of fluvial sandstones, coastal-plain mudstones and coal. Well-performance anomalies and abrupt variations in sandstone thickness are associated with the heterogeneous valley-fills. Shoreface sedimentation resumed during transgressive systems tracts. High sediment flux enabled the nearshore system to stack aggradationally. Diachronous lithostratigraphy, aggradation of the heterolithic back-barrier Ness Formation, interbedding of Rannoch facies in the lower Etive and increased carbonate cement in the lower shoreface Rannoch mark this systems tract.

  20. Quantization of classical curves

    E-Print Network [OSTI]

    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.

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

    E-Print Network [OSTI]

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

  2. Crude oil supply curves

    E-Print Network [OSTI]

    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 ...

  3. Brent Warner Coordinator

    E-Print Network [OSTI]

    Peak, Derek

    : · health · food safety · renewed interest in food · energy/climate change! Is this your strategy? #12;Our appliance sector, where industry data shows shipments are down nearly 8% Associated Press - August 28, 2008 a year ago Amazon.com has seen double-digit growth in book sales in the food, cooking and wine category

  4. Extinction curves in AGN

    E-Print Network [OSTI]

    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.

  5. Connecting curves for dynamical systems

    E-Print Network [OSTI]

    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.

  6. Updated Hubbert curves analyze world oil supply

    SciTech Connect (OSTI)

    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.

  7. FATIGUE DESIGN CURVES FOR

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: 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

  8. Chuliang Xiao1, Brent Lofgren2 1Cooperative Institute for Limnology and Ecosystems Research, University of Michigan, Ann Arbor

    E-Print Network [OSTI]

    processes, WRF/Lake model is insufficient to represent the real thermal diffusivity in deep lakes. Future-air interaction and associated surface processes in the Great Lakes, the largest group of fresh water bodies model (Gu et al. 2013). It is a mass and energy balance scheme with 20-25 model layers, including up

  9. A Journey Between Two Curves

    E-Print Network [OSTI]

    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.

  10. Superfluids in Curved Spacetime

    E-Print Network [OSTI]

    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...

  11. Superfluids in Curved Spacetime

    E-Print Network [OSTI]

    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.

  12. Wind Energy Learning Curves for Reference in Expert Elicitations

    E-Print Network [OSTI]

    Mountziaris, T. J.

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

  13. Random Curves by Conformal Welding

    E-Print Network [OSTI]

    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 $\\kappa<4$.

  14. Random Curves by Conformal Welding

    E-Print Network [OSTI]

    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 $\\kappa<4$.

  15. Dragon curves revisited S. Tabachnikov

    E-Print Network [OSTI]

    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

  16. Fourier duality of quantum curves

    E-Print Network [OSTI]

    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.

  17. Multi-Factor Model of Correlated Commodity - Forward Curves for Crude Oil and Shipping Markets

    E-Print Network [OSTI]

    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 ...

  18. Carbon emissions in China: How far can new efforts bend the curve?

    E-Print Network [OSTI]

    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

  19. Future Healthcare

    E-Print Network [OSTI]

    Datta, Shoumen

    2010-12-15

    Patients want answers, not numbers. Evidence-based medicine must have numbers to generate answers. Therefore, analysis of numbers to provide answers is the Holy Grail of healthcare professionals and its future systems. ...

  20. Caloric Curves and Nuclear Expansion

    E-Print Network [OSTI]

    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.

  1. Fast identification of transits from light-curves

    E-Print Network [OSTI]

    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.

  2. Water: The Future’s Fuel

    E-Print Network [OSTI]

    Benavente, Carlos

    2014-01-01

    George W. 1881. The Use of Water as a Fuel. Science, 321-combusted  with  O  Water:  The  Future’s  Fuel   163  Sciences, 3329-3342.  Water:  The  Future’s  Fuel   165  

  3. Brent Nelson | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12Power, IncBio CentersBreaking Up (Hydrogen) No Longer As Hard

  4. Introduction Conclusions, Future Directions, and Acknowledgements

    E-Print Network [OSTI]

    different curve shapes for each polymer and have different formal potentials. - PPV spectrum isn't clean cells to store energy Why is PSI useful for solar technology? - High quantum efficiency - Abundant - Possible 3-D network - Future work in solid state studies Synthesize PolymersSynthesize Polymers

  5. Analysis and Design of Power Acceptability Curves

    E-Print Network [OSTI]

    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

  6. 18.783 Elliptic Curves, Spring 2013

    E-Print Network [OSTI]

    Sutherland, Andrew

    This graduate-level course is a computationally focused introduction to elliptic curves, with applications to number theory and cryptography.

  7. VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY

    E-Print Network [OSTI]

    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

  8. VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY

    E-Print Network [OSTI]

    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

  9. VERHULST'S LOGISTIC CURVE DAVID M. BRADLEY

    E-Print Network [OSTI]

    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

  10. Pasolini for the Future

    E-Print Network [OSTI]

    Ricciardi, Alessia

    2011-01-01

    Pasolini for the Future 1 AlessiaRicciardi Although “the future” may represent an ever hazierloss of hope regarding the future has become integral to our

  11. The Future Metropolitan Landscape

    E-Print Network [OSTI]

    Bosselmann, Peter; Ruggeri, Deni

    2007-01-01

    The Future Metropolitan Landscape Peter Bosselmann and DeniMetropolitan Landscape The Future Metropolitan Landscape Thecomplex phenomenon of “The Future Metropolitan Landscape. ”

  12. Thermal aspects in curved metrics

    E-Print Network [OSTI]

    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.

  13. Estimating Carbon Supply Curves for Global Forests and Other Land Uses April 2001, Discussion Paper 01-19

    SciTech Connect (OSTI)

    Sedjo, Roger; Sohngen, Brent; Mendelsohn, Robert

    2001-04-05

    This study develops cumulative carbon ''supply curves'' for global forests utilizing a dynamic timber supply model for sequestration of forest carbon. Because the period of concern is the next century, and particular time points within that century, the curves are not traditional Marshallian supply curves or steady-state supply curves. Rather, the focus is on cumulative carbon cost curves (quasi-supply curves) at various points in time over the next 100 years. The research estimates a number of long-term, cumulative, carbon quasi-supply curves under different price scenarios and for different time periods. The curves trace out the relationship between an intertemporal price path for carbon, as given by carbon shadow prices, and the cumulative carbon sequestered from the initiation of the shadow prices, set at 2000, to a selected future year (2010, 2050, 2100). The timber supply model demonstrates that cumulative carbon quasi-supply curves that can be generated through forestry significantly depend on initial carbon prices and expectations regarding the time profile of future carbon prices. Furthermore, long-run quasi-supply curves generated from a constant price will have somewhat different characteristics from quasi-supply curves generated with an expectation of rising carbon prices through time.The ?least-cost? curves vary the time periods under consideration and the time profile of carbon prices. The quasi-supply curves suggest that a policy of gradually increasing carbon prices will generate the least costly supply curves in the shorter periods of a decade or so. Over longer periods of time, however, such as 50 or 100 years, these advantages appear to dissipate.

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

    E-Print Network [OSTI]

    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

  15. Is the environmental Kuznets curve an empirical regularity?

    E-Print Network [OSTI]

    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

  16. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

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

    2007-01-01

    2004) ‘Experience curves for power plant emission controlLtd. Experience curves for power plant emission controlInc. Experience curves for power plant emission control

  17. UV Light Curves of Thermonuclear Supernovae

    E-Print Network [OSTI]

    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.

  18. Canonical correlation of shipping forward curves

    E-Print Network [OSTI]

    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 ...

  19. LIGHT CURVES OF 32 LARGE TRANSNEPTUNIAN OBJECTS

    SciTech Connect (OSTI)

    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.

  20. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study Renewable Electricity Generation and Storage Technologies for Sustainable Energy, LLC. #12;Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable;Suggested Citations Renewable Electricity Futures Study (Entire Report) National Renewable Energy Laboratory

  1. Transportation Energy Futures

    E-Print Network [OSTI]

    Sperling, Daniel

    1989-01-01

    s values, forecasts of future energy prices and politicalYergin, D. , eds. 1979. Energy Future: Report of the Energy02, Sacramento, Calif. ENERGY FUTURES 103. Ullman, T. L. ,

  2. SMOOTHING SPLINE GROWTH CURVES WITH COVARIATES

    E-Print Network [OSTI]

    #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

  3. Twisted Jacobi Intersections Curves Rongquan Feng1

    E-Print Network [OSTI]

    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

  4. Living a Sustainable Future

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

    solve the energy crisis through biological methods, including genetically engineering algae and cyanobacteria. Create a Sustainable Future: Living Living a Sustainable Future How...

  5. Active stewardship: sustainable future

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

    Active stewardship: sustainable future Active stewardship: sustainable future Energy sustainability is a daunting task: How do we develop top-notch innovations with some of the...

  6. Incorporating Experience Curves in Appliance Standards Analysis

    E-Print Network [OSTI]

    Desroches, Louis-Benoit

    2012-01-01

    appliance price projections than the assumption-basedrepresentative projection of future prices than the constant

  7. Global Energy Futures: With International Futures (IFs)

    SciTech Connect (OSTI)

    Hughes, Barry

    2013-03-20

    Dr. Hughes presents and discusses the results of simulations on alternative energy futures composed in collaboration with SNL's Sustainability Innovation Foundry.

  8. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study Exploration of High-Penetration Renewable Electricity Futures PDF Volume 4 PDF #12;Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable Citations Renewable Electricity Futures Study (Entire Report) National Renewable Energy Laboratory. (2012

  9. Decline curve analysis for horizontal wells 

    E-Print Network [OSTI]

    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...

  10. Application of Hybrid Geo-Spatially Granular Fragility Curves to Improve Power Outage Predictions

    SciTech Connect (OSTI)

    Fernandez, Steven J; Allen, Melissa R; Omitaomu, Olufemi A; Walker, Kimberly A

    2014-01-01

    Fragility curves depict the relationship between a weather variable (wind speed, gust speed, ice accumulation, precipitation rate) and the observed outages for a targeted infrastructure network. This paper describes an empirical study of the county by county distribution of power outages and one minute weather variables during Hurricane Irene with the objective of comparing 1) as built fragility curves (statistical approach) to engineering as designed (bottom up) fragility curves for skill in forecasting outages during future hurricanes; 2) county specific fragility curves to find examples of significant deviation from average behavior; and 3) the engineering practices of outlier counties to suggest future engineering studies of robustness. Outages in more than 90% of the impacted counties could be anticipated through an average or generic fragility curve. The remaining counties could be identified and handled as exceptions through geographic data sets. The counties with increased or decreased robustness were characterized by terrain more or less susceptible to persistent flooding in areas where above ground poles located their foundations. Land use characteristics of the area served by the power distribution system can suggest trends in the as built power grid vulnerabilities to extreme weather events that would be subjects for site specific studies.

  11. Incorporating Experience Curves in Appliance Standards Analysis

    E-Print Network [OSTI]

    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,

  12. Stable Segmentation of 2D Curves 

    E-Print Network [OSTI]

    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 ...

  13. Environmental bias and elastic curves on surfaces

    E-Print Network [OSTI]

    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.

  14. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-10-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  15. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2013-04-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  16. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-09-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  17. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-11-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  18. Planning for the future

    SciTech Connect (OSTI)

    Lesh, Pamela

    2009-06-15

    Four changes to integrated resource planning could significantly improve alignment between future utility spending and the forces and changes that are upending past preconceptions of how to predict future load. (author)

  19. Quantum fields and entanglement on a curved lightfront

    E-Print Network [OSTI]

    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.

  20. Quantum fields and entanglement on a curved lightfront

    E-Print Network [OSTI]

    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.

  1. Graphene: QFT in curved spacetimes close to experiments

    E-Print Network [OSTI]

    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.

  2. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study Bulk Electric Power Systems: Operations and Transmission by the Alliance for Sustainable Energy, LLC. #12;Renewable Electricity Futures Study Edited By Hand, M.M. National Suggested Citations Renewable Electricity Futures Study (Entire Report) National Renewable Energy Laboratory

  3. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study Executive Summary NREL is a national laboratory of the U for Sustainable Energy, LLC. Volume 2 PDF Volume 3 PDF Volume 1 PDF Volume 4 PDF #12;Renewable Electricity Futures. National Renewable Energy Laboratory Suggested Citations Renewable Electricity Futures Study (Entire Report

  4. Renewable Electricity Futures Study

    E-Print Network [OSTI]

    Renewable Electricity Futures Study End-use Electricity Demand Volume 3 of 4 Volume 2 PDF Volume 3;Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable Energy Laboratory Baldwin, S. U Sandor, D. National Renewable Energy Laboratory Suggested Citations Renewable Electricity Futures Study

  5. Appointment Future work

    E-Print Network [OSTI]

    Phillips, David

    1/17 Appointment scheduling Example: a glaucoma clinic Future work Appointment scheduling #12;2/17 Appointment scheduling Example: a glaucoma clinic Future work Have you heard this one? So: a glaucoma clinic Future work Have you heard this one? So a mathematician walks into a room full

  6. FINDYOUR FOCUS. YOUR FUTURE.

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    FINDYOUR FOCUS. #12;YOUR FUTURE. DRIVE West Virginia University (ISSN 0362-3009) is published, Morgantown, WV 26506-6009. You're about to start the race of your life. Travis is racing toward his future has great options for his future. You have great options, too. Ready to get started? Tell us

  7. Mathematical Future work

    E-Print Network [OSTI]

    Phillips, David

    1/15 Mathematical modeling Example: Glaucoma clinic Future work Scheduling and resource planning;2/15 Mathematical modeling Example: Glaucoma clinic Future work So a mathematician walks into a room full of healthcare providers... · Mathematical modeling · A model for the glaucoma clinic · Future possibilities #12

  8. FUTURE LOGISTICS LIVING LABORATORY

    E-Print Network [OSTI]

    Heiser, Gernot

    FUTURE LOGISTICS LIVING LABORATORY Delivering Innovation The Future Logistics Living Lab that will provide logistics solutions for the future. The Living Lab is a demonstration, exhibition and work space by a group of logistics companies, research organisations, universities, and IT providers that includes NICTA

  9. Methodological Research Future Work

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Outline Background Methodological Research Results Future Work New Dataset 1878 PCA for 1000 rmfs Background Methodological Research Results Future Work New Dataset 1878 PCA for 1000 rmfs Background Quasar Analysis Future Work Doubly-intractable Distribution Other Calibration Uncertainty New Dataset

  10. Updated U.S. Geothermal Supply Curve

    SciTech Connect (OSTI)

    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.

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

    E-Print Network [OSTI]

    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

  12. Experimental Simulation of Closed Timelike Curves

    E-Print Network [OSTI]

    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.

  13. 13/2 ways to count curves

    E-Print Network [OSTI]

    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.

  14. Chiral gap effect in curved space

    E-Print Network [OSTI]

    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.

  15. Reversible vectorisation of 3D digital planar curves and applications

    E-Print Network [OSTI]

    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

  16. The Future of Network Neutrality

    E-Print Network [OSTI]

    Guttentag, Mikhail

    2009-01-01

    November 3, 2007). Print. The Future of Network Neutralityappeali.html>. The Future of Network Neutrality 19 ———. "Books, 2006. Print. ———. The Future of Ideas. New York, NY:

  17. Curving Dynamics in High Speed PUBLIC VERSION

    E-Print Network [OSTI]

    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

  18. Cryptographic Schemes based on Elliptic Curve Pairings

    E-Print Network [OSTI]

    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

  19. Closed timelike curves in general relativity

    E-Print Network [OSTI]

    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.

  20. Research Summary Estimating Woodfuel Resource Cost Curves

    E-Print Network [OSTI]

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

  1. Fractionalization of Interstitials in Curved Colloidal Crystals

    E-Print Network [OSTI]

    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.

  2. Introduction to Futures Markets 

    E-Print Network [OSTI]

    Mintert, James R.; Welch, Mark

    2009-01-07

    or settlement price. Although the margin require- ments are small relative to the total value of the 4 Using Futures Contracts in a Farm Marketing Program There are a number of ways futures contracts can be used in a farm marketing program. Futures... their risk exposure, grain dealers began selling ?To Arrive? contracts, which specified the future date (usually the month) a speci- fied quantity of grain would be delivered to a particular location at a price identified in the contract. Fixing the price...

  3. Transportation Energy Futures Snapshot

    Office of Energy Efficiency and Renewable Energy (EERE)

    This snapshot is a summary of the EERE reports that provide a detailed analysis of opportunities and challenges along the path to a more sustainable transportation energy future.

  4. My Amazing Future 2012

    ScienceCinema (OSTI)

    None

    2013-05-28

    Idaho National Laboratory's My Amazing Future program gives 8th grade women the opportunity to experience careers in science and engineering.

  5. Growing the Future Bioeconomy

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

    the Future Bioeconomy JOEL VELASCO July 2014 2 Copyright 2012 Amyris, Inc. All rights reserved. This presentation and oral statements accompanying this presentation contain...

  6. My Amazing Future 2012

    SciTech Connect (OSTI)

    None

    2012-01-01

    Idaho National Laboratory's My Amazing Future program gives 8th grade women the opportunity to experience careers in science and engineering.

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

    E-Print Network [OSTI]

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

    2007-01-01

    learning rates for capital cost and O&M cost for the sevencomponent to the total capital cost and total O&M cost ofin Table 6, the capital cost and total cost of capture are

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

    E-Print Network [OSTI]

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

    2007-01-01

    adjusted using the Handy–Whitman Cost Index for PC boilersChemical Engineering Cost Index for all others. See Rubin et

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

    E-Print Network [OSTI]

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

    2007-01-01

    of power plant emissions of greenhouse gases, and thee) power plant FGD and SCR systems; also, (f) gas turbineno IGCC power plant has yet combined CO 2 capture with a gas

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

    E-Print Network [OSTI]

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

    2007-01-01

    Cost of electricity (excluding transport/ storage) Nominal (of electricity (excluding CO 2 transport and storage costs).electricity after 100 GW of capture plant capacity (excluding transport and storage

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

    E-Print Network [OSTI]

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

    2007-01-01

    lique?ed natural gas (LNG) production plants, oxygencoal (PC) boilers LNG production Oxygen production Hydrogenin this study for (a) LNG production, ( b) PC boilers, (c)

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

    E-Print Network [OSTI]

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

    2007-01-01

    economics of the combined cycle gas turbine—an experiencePC) and natural gas combined cycle (NGCC) plants with post-integrated gasi?cation combined cycle (IGCC) plants with

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

    E-Print Network [OSTI]

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

    2007-01-01

    systems at a new coal-fired power plant in the U.S. (500 MW,capture systems at coal-?red power plants (Fig. 2). Fig. 4 –systems installed at coal-?red power plants. Lower component

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

    E-Print Network [OSTI]

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

    2007-01-01

    plants, pulverized coal (PC) boilers, lique?ed natural gas (GTCC) Pulverized coal (PC) boilers LNG production OxygenLNG production, ( b) PC boilers, (c) oxygen production, (d)

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

    E-Print Network [OSTI]

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

    2007-01-01

    boiler; Pittsburgh #8 coal; price = 1.0 $/GJ. f IGCC plant =7FA gas turbines; Pgh #8 coal; price = 1.0 $/GJ. g Oxyfuelboiler; Pittsburgh #8 coal; price = 1.0 $/GJ. Other

  16. The use for frequency-consequence curves in future reactor licensing

    E-Print Network [OSTI]

    Debesse, Laurène

    2007-01-01

    The licensing of nuclear power plants has focused until now on Light Water Reactors and has not incorporated systematically insights and benefits from Probabilistic Risk Assessment (PRA). With the goal of making the licensing ...

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

    E-Print Network [OSTI]

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

    2007-01-01

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

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

    E-Print Network [OSTI]

    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

  19. Future Trends in Microelectronics

    E-Print Network [OSTI]

    Luryi, Serge

    Future Trends in Microelectronics Reflections on the Road to Nanotechnology edited by Serge Luryi;Proceedings of the NATO Advanced Research Workshop on Future Trends in Microelectronics: Reflections is available from the Library of Congress ISBN 0-7923-4169-4 Published by Kluwer Academic Publishers, P.O. Box

  20. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. This presentation was presented in a Wind Powering America webinar on August 15, 2012 and is now available through the Wind Powering America website.

  1. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.

    2012-10-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It is being presented at the Utility Variable-Generation Integration Group Fall Technical Workshop on October 24, 2012.

  2. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.; Mai, T.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in an Union of Concerned Scientists webinar on June 12, 2012.

  3. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a Power Systems Engineering Research Center webinar on September 4, 2012.

  4. The Hanford Story: Future

    Broader source: Energy.gov [DOE]

    The Future Chapter of the Hanford Story illustrates the potential and possibilities offered by a post-cleanup Hanford. From land use plans and preservation at Hanford to economic development and tourism opportunities, the Future chapter touches on a variety of local economic, cultural and environmental perspectives.

  5. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a webinar given by the California Energy Commission.

  6. Centrifugally driven relativistic dynamics on curved trajectories

    E-Print Network [OSTI]

    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 \

  7. Quantum Mechanics and Closed Timelike Curves

    E-Print Network [OSTI]

    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.

  8. Galaxy rotation curves in de Sitter space

    E-Print Network [OSTI]

    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.

  9. Light Curves of Swift Gamma Ray Bursts

    E-Print Network [OSTI]

    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.

  10. Incorporating Experience Curves in Appliance Standards Analysis

    SciTech Connect (OSTI)

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

    2011-10-31

    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.

  11. Capillary migration of microdisks on curved interfaces

    E-Print Network [OSTI]

    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.

  12. Brent M. Drake, Chief Data Officer

    E-Print Network [OSTI]

    Pittendrigh, Barry

    Coordinator Jason Fish Director, Informatics Michele Rund Senior Web Designer/Developer Will Grauvogel Web Application Programmer Kevin O'Shea Educational Technologist Casey Wright Web Application Programmer Jason Dufair Web Application Programmer Buddy Favors Web Application Programmer Daniel Milliken Web Application

  13. Compact Similarity Joins Brent Bryan #1

    E-Print Network [OSTI]

    Eberhardt, Frederick

    interest, with applications in Geographical Information Systems, astron- omy, marketing analyzes of magnitude faster. I. INTRODUCTION In numerous applications, such as Geographical Information Systems, office of the similarity join result, while retaining all the information in the standard join. Our algorithms have

  14. General Brent Scowcroft | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12,Executive Compensation References: FARWashersGenSys Blue: Fuel Cell

  15. Blue Ribbon Commission on America's Nuclear Future: Report to the Secretary of Energy

    SciTech Connect (OSTI)

    2012-01-01

    Preamble The Blue Ribbon Commission on America’s Nuclear Future (BRC) was formed by the Secretary of Energy at the request of the President to conduct a comprehensive review of policies for managing the back end of the nuclear fuel cycle and recommend a new strategy. It was co-chaired by Rep. Lee H. Hamilton and Gen. Brent Scowcroft. Other Commissioners are Mr. Mark H. Ayers, the Hon. Vicky A. Bailey, Dr. Albert Carnesale, Sen. Pete Domenici, Ms. Susan Eisenhower, Sen. Chuck Hagel, Mr. Jonathan Lash, Dr. Allison M. Macfarlane, Dr. Richard A. Meserve, Dr. Ernest J. Moniz, Dr. Per Peterson, Mr. John Rowe, and Rep. Phil Sharp. The Commission and its subcommittees met more than two dozen times between March 2010 and January 2012 to hear testimony from experts and stakeholders, to visit nuclear waste management facilities in the United States and abroad, and to discuss the issues identified in its Charter. Additionally, in September and October 2011, the Commission held five public meetings, in different regions of the country, to hear feedback on its draft report. A wide variety of organizations, interest groups, and individuals provided input to the Commission at these meetings and through the submission of written materials. Copies of all of these submissions, along with records and transcripts of past meetings, are available at the BRC website (www.brc.gov). This report highlights the Commission’s findings and conclusions and presents recommendations for consideration by the Administration and Congress, as well as interested state, tribal and local governments, other stakeholders, and the public.

  16. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    DeMeo, E.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at Wind Powering America States Summit. The Summit, which follows the American Wind Energy Association's (AWEA's) annual WINDPOWER Conference and Exhibition, provides state Wind Working Groups, state energy officials, U.S. Energy Department and national laboratory representatives, and professional and institutional partners an opportunity to review successes, opportunities, and challenges for wind energy and plan future collaboration.

  17. Future Grid: The Environment Future Grid Initiative White Paper

    E-Print Network [OSTI]

    Future Grid: The Environment Future Grid Initiative White Paper Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;Future Grid: The Environment Prepared for the Project "The Future Grid to Enable Sustainable Energy Systems" Funded by the U

  18. Overture Past Interlude Present Interlude Future Finale Geometry's Future

    E-Print Network [OSTI]

    Lee, Carl

    Overture Past Interlude Present Interlude Future Finale Geometry's Future: Past, Present, and Future Carl Lee University of Kentucky http://www.ms.uky.edu/lee NCTM -- April 2011 Geometry's Future UK #12;Overture Past Interlude Present Interlude Future Finale Overture Past Interlude Present Interlude

  19. Future Choices 1 Running head: EFFECT OF FUTURE CHOICES

    E-Print Network [OSTI]

    Future Choices 1 Running head: EFFECT OF FUTURE CHOICES The Effect of Highlighting Future Choices on Current Preferences Uzma Khan Carnegie Mellon University Ravi Dhar Yale School of Management #12;Future future choices rather than as an isolated choice. Our finding contrasts with the general wisdom

  20. Experience curves for power plant emission control technologies

    E-Print Network [OSTI]

    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

  1. Visual Attention and Driver Performance at Horizontal Curves 

    E-Print Network [OSTI]

    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...

  2. Computational design with curved creases : David Huffman's approach to paperfolding

    E-Print Network [OSTI]

    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 ...

  3. Transportation Energy Futures Study

    Office of Energy Efficiency and Renewable Energy (EERE)

    Transportation accounts for 71% of total U.S. petroleum consumption and 33% of total greenhouse gas emissions. The Transportation Energy Futures (TEF) study examines underexplored oil-savings and...

  4. Future Physics | Jefferson Lab

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

    Future Physics March 5, 2009 In late January, we held a meeting of our Physics Advisory Committee, PAC34 to be precise. We had two primary goals for the PAC, one related to the...

  5. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented to the 2012 Western Conference of Public Service Commissioners, during their June, 2012, meeting. The Western Conference of Public Service Commissioners is a regional association within the National Association of Regulatory Utility Commissioners (NARUC).

  6. 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;...

  7. Future land use plan

    SciTech Connect (OSTI)

    NONE

    1995-08-31

    The US Department of Energy`s (DOE) changing mission, coupled with the need to apply appropriate cleanup standards for current and future environmental restoration, prompted the need for a process to determine preferred Future Land Uses for DOE-owned sites. DOE began the ``Future Land Use`` initiative in 1994 to ensure that its cleanup efforts reflect the surrounding communities` interests in future land use. This plan presents the results of a study of stakeholder-preferred future land uses for the Brookhaven National Laboratory (BNL), located in central Long Island, New York. The plan gives the Laboratory`s view of its future development over the next 20 years, as well as land uses preferred by the community were BNL ever to cease operations as a national laboratory (the post-BNL scenario). The plan provides an overview of the physical features of the site including its history, topography, geology/hydrogeology, biological inventory, floodplains, wetlands, climate, and atmosphere. Utility systems and current environmental operations are described including waste management, waste water treatment, hazardous waste management, refuse disposal and ground water management. To complement the physical descriptions of the site, demographics are discussed, including overviews of the surrounding areas, laboratory population, and economic and non-economic impacts.

  8. FUTURE CLIMATE ANALYSIS

    SciTech Connect (OSTI)

    R.M. Forester

    2000-03-14

    This Analysis/Model Report (AMR) documents an analysis that was performed to estimate climatic variables for the next 10,000 years by forecasting the timing and nature of climate change at Yucca Mountain (YM), Nevada (Figure l), the site of a potential repository for high-level radioactive waste. The future-climate estimates are based on an analysis of past-climate data from analog meteorological stations, and this AMR provides the rationale for the selection of these analog stations. The stations selected provide an upper and a lower climate bound for each future climate, and the data from those sites will provide input to the infiltration model (USGS 2000) and for the total system performance assessment for the Site Recommendation (TSPA-SR) at YM. Forecasting long-term future climates, especially for the next 10,000 years, is highly speculative and rarely attempted. A very limited literature exists concerning the subject, largely from the British radioactive waste disposal effort. The discussion presented here is one method, among many, of establishing upper and lower bounds for future climate estimates. The method used here involves selecting a particular past climate from many past climates, as an analog for future climate. Other studies might develop a different rationale or select other past climates resulting in a different future climate analog.

  9. Length and Energy of Quadratic Bezier Curves and Applications

    E-Print Network [OSTI]

    Hoffmann, Christoph M.

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

  10. Oil production models with normal rate curves Dudley Stark

    E-Print Network [OSTI]

    Stark, Dudley

    Oil production models with normal rate curves Dudley Stark School of Mathematical Sciences Queen;Abstract The normal curve has been used to fit the rate of both world and U.S.A. oil production. In this paper we give the first theoretical basis for these curve fittings. It is well known that oil field

  11. Number of Jacobi quartic curves over finite Rongquan Feng1

    E-Print Network [OSTI]

    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

  12. Calibrating Curved Crystals Used for Plasma Spectroscopy

    SciTech Connect (OSTI)

    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.

  13. Modeling the Phillips curve with unobserved components

    E-Print Network [OSTI]

    Harvey, Andrew C

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

  14. Future Climate Analysis

    SciTech Connect (OSTI)

    James Houseworth

    2001-10-12

    This Analysis/Model Report (AMR) documents an analysis that was performed to estimate climatic variables for the next 10,000 years by forecasting the timing and nature of climate change at Yucca Mountain (YM), Nevada (Figure 1), the site of a potential repository for high-level radioactive waste. The future-climate estimates are based on an analysis of past-climate data from analog meteorological stations, and this AMR provides the rationale for the selection of these analog stations. The stations selected provide an upper and a lower climate bound for each future climate, and the data from those sites will provide input to the infiltration model (USGS 2000) and for the total system performance assessment for the Site Recommendation (TSPA-SR) at YM. Forecasting long-term future climates, especially for the next 10,000 years, is highly speculative and rarely attempted. A very limited literature exists concerning the subject, largely from the British radioactive waste disposal effort. The discussion presented here is one method, among many, of establishing upper and lower bounds for future climate estimates. The method used here involves selecting a particular past climate from many past climates, as an analog for future climate. Other studies might develop a different rationale or select other past climates resulting in a different future climate analog. Revision 00 of this AMR was prepared in accordance with the ''Work Direction and Planning Document for Future Climate Analysis'' (Peterman 1999) under Interagency Agreement DE-AI08-97NV12033 with the U.S. Department of Energy (DOE). The planning document for the technical scope, content, and management of ICN 01 of this AMR is the ''Technical Work Plan for Unsaturated Zone (UZ) Flow and Transport Process Model Report'' (BSC 2001a). The scope for the TBV resolution actions in this ICN is described in the ''Technical Work Plan for: Integrated Management of Technical Product Input Department''. (BSC 2001b, Addendum B, Section 4.1).

  15. 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

  16. Light curves from rapidly rotating neutron stars

    E-Print Network [OSTI]

    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...

  17. Spherical nanoindentation stress–strain curves

    SciTech Connect (OSTI)

    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.

  18. Water for future Mars astronauts?

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

    Water for future Mars astronauts? Water for future Mars astronauts? Within its first three months on Mars, NASA's Curiosity Rover saw a surprising diversity of soils and sediments...

  19. Too Much History MORE Future

    E-Print Network [OSTI]

    Schubart, Christoph

    Too Much History SHARE MORE Future #12;Vortrag: ,,The view from Eastern Ukraine: challenges MORE Future Donnerstag, 27. November 2014, 18 Uhr Kino im Andreasstadel, Andreasstraße 28, 93059

  20. Debris and Future Space Activities

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Debris and Future Space Activities Prof. Joel R. Primack Physics Department University would be endangered. Every person who cares about the human future in space should also realize

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

    E-Print Network [OSTI]

    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.

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

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    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

  5. Future Climate Analysis

    SciTech Connect (OSTI)

    C. G. Cambell

    2004-09-03

    This report documents an analysis that was performed to estimate climatic variables for the next 10,000 years by forecasting the timing and nature of climate change at Yucca Mountain, Nevada, the site of a repository for spent nuclear fuel and high-level radioactive waste. The future-climate estimates are based on an analysis of past-climate data from analog meteorological stations, and this report provides the rationale for the selection of these analog stations. The stations selected provide an upper and a lower climate bound for each future climate, and the data from those sites will provide input to the following reports: ''Simulation of Net Infiltration for Present-Day and Potential Future Climates'' (BSC 2004 [DIRS 170007]), ''Total System Performance Assessment (TSPA) Model/Analysis for the License Application'' (BSC 2004 [DIRS 168504]), ''Features, Events, and Processes in UZ Flow and Transport'' (BSC 2004 [DIRS 170012]), and ''Features, Events, and Processes in SZ Flow and Transport'' (BSC 2004 [DIRS 170013]). Forecasting long-term future climates, especially for the next 10,000 years, is highly speculative and rarely attempted. A very limited literature exists concerning the subject, largely from the British radioactive waste disposal effort. The discussion presented here is one available forecasting method for establishing upper and lower bounds for future climate estimates. The selection of different methods is directly dependent on the available evidence used to build a forecasting argument. The method used here involves selecting a particular past climate from many past climates, as an analog for future climate. While alternative analyses are possible for the case presented for Yucca Mountain, the evidence (data) used would be the same and the conclusions would not be expected to drastically change. Other studies might develop a different rationale or select other past climates resulting in a different future climate analog. Other alternative approaches could include simulation of climate over the 10,000-year period; however, this modeling extrapolation is well beyond the bounds of current scientific practice and would not provide results with better confidence. A corroborative alternative approach may be found in ''Future Climate Analysis-10,000 Years to 1,000,000 Years After Present'' (Sharpe 2003 [DIRS 161591]). The current revision of this report is prepared in accordance with ''Technical Work Plan for: Unsaturated Zone Flow Analysis and Model Report Integration'' (BSC 2004 [DIRS 169654]).

  6. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented at the 2012 RE AMP Annual Meeting. RE-AMP is an active network of 144 nonprofits and foundations across eight Midwestern states working on climate change and energy policy with the goal of reducing global warming pollution economy-wide 80% by 2050.

  7. FUTURE POWER GRID INITIATIVE Decision Support for Future

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Decision Support for Future Power Grid Organizations OBJECTIVE Northwest National Laboratory (509) 371-6607 angela.dalton@pnnl.gov ABOUT FPGI The Future Power Grid a more secure, efficient and reliable future grid. Building on the Electricity Infrastructure Operations

  8. SYNTHETIC OFF-AXIS LIGHT CURVES FOR LOW-ENERGY GAMMA-RAY BURSTS

    SciTech Connect (OSTI)

    Van Eerten, Hendrik J.; MacFadyen, Andrew I.

    2011-06-01

    We present results for a large number of gamma-ray burst (GRB) afterglow light curve calculations, done by combining high-resolution two-dimensional relativistic hydrodynamics simulations using RAM with a synchrotron radiation code. Results were obtained for jet energies, circumburst medium densities, and jet angles typical for short and underluminous GRBs, different observer angles, and observer frequencies from low radio (75 MHz) to X-ray (1.5 keV). We summarize the light curves through smooth power-law fits with up to three breaks, covering jet breaks for small observer angles, the rising phase for large observer angles, and the rise and decay of the counterjet. All light curve data are publicly available on the Web. The data can be used for model fits to observational data and as an aid for predicting observations by future telescopes such as LOFAR or the Square Kilometer Array and will benefit the study of neutron star mergers using different channels, such as gravitational-wave observations with LIGO or Virgo. For small observer angles, we find jet break times that vary significantly between frequencies, with the break time in the radio substantially postponed. Increasing the observer angle also postpones the measured jet break time. The rising phase of the light curve for large observer angle has a complex shape that cannot always be summarized by a simple power law. Except for very large observer angles, the counterjet is a distinct feature in the light curve, although in practice the signal will be exceedingly difficult to observe by then.

  9. Future Students Current Students

    E-Print Network [OSTI]

    Menzel, Suzanne

    Search Home Future Students Current Students For Alumni For Employers News & Media Upcoming Events IU Home IUB Home IUB Computer Science IUPUI Home IUPUI Informatics IUPUI New Media IUSB Informatics the expertise of the Industrial Light & Magic. Alex Sutter, a special effects creator who works in ILM

  10. Energy futures-2

    SciTech Connect (OSTI)

    Not Available

    1991-01-01

    This book covers the proceedings of the Symposium on Energy Futures II. Topics covered include: The National Energy Strategy; The Gas and petroleum industry; energy use in the paper industry; solar energy technology; hydroelectric power; biomass/waste utilization; engine emissions testing laboratories; integrated coal gassification-combined-cycle power plants.

  11. Future Internet Research, Services

    E-Print Network [OSTI]

    Sztrik, János

    -financed by the European Social Fund. National Development Agency www.ujszechenyiterv.gov.hu 06 40 638 638 Foreword research and development projects were granted, and many young colleagues were involved into the work;3 Future Internet Research, Services and Technology The project is supported by the European Union and co

  12. Quantum motor and future

    E-Print Network [OSTI]

    Evgeny G. Fateev

    2013-01-20

    In a popular language, the possibilities of the Casimir expulsion effect are presented, which can be the basis of quantum motors. Such motors can be in the form of a special multilayer thin film with periodic and complex nanosized structures. Quantum motors of the type of the Casimir platforms can be the base of transportation, energy and many other systems in the future.

  13. Investing in the Future 

    E-Print Network [OSTI]

    Wythe, Kathy

    2006-01-01

    Engineering; Elizabeth Bristow, Department of Civil Engineering; Regan M. Errera and Danielle M. Rutka, Department of Wildlife and Fisheries Sciences; David Hansen, Stephen Lichlyter and Douglas S. Sassen, Department of Geology and Geophysics; and Shelli L... in the Future TWRI awards Mills Scholarships to graduate students tx H2O | pg. 21 ...

  14. Pennsylvania's Natural Gas Future

    E-Print Network [OSTI]

    Lee, Dongwon

    1 Pennsylvania's Natural Gas Future Penn State Natural Gas Utilization Workshop Bradley Hall sales to commercial and industrial customers ­ Natural gas, power, oil · Power generation ­ FossilMMBtuEquivalent Wellhead Gas Price, $/MMBtu Monthly US Spot Oil Price, $/MMBtu* U.S. Crude Oil vs. Natural Gas Prices, 2005

  15. Force-extension curves of bacterial flagella

    E-Print Network [OSTI]

    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.

  16. Hydrogen atom on curved noncommutative space

    E-Print Network [OSTI]

    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.

  17. FuturICT

    E-Print Network [OSTI]

    Helbing, Dirk; Lukowicz, Paul

    2012-01-01

    FuturlCT is a FET Flagship project using collective, participatory research, integrated across ICT, the social sciences and complexity science, to design socio-inspired technology and develop a science of global, socially interactive systems. The project will bring together, on a global level, Big Data, new modelling techniques and new forms of interaction, leading to a new understanding of society and its coevolution with technology. It aims to understand, explore and manage our complex, connected world in a more sustainable and resilient way. FuturICT is motivated by the fact that ubiquitous communication and sensing blur the boundaries between the physical and digital worlds, creating unparalleled opportunities for understanding the socio-economic fabric of our world, and for empowering humanity to make informed, responsible decisions for its future. The intimate, complex and dynamic relationship between global, networked ICT systems and human society directly influences the complexity and manageability of...

  18. FUTURES with Jaime Escalante

    SciTech Connect (OSTI)

    NONE

    1996-08-01

    The United States Department of Energy awarded the Foundation for Advancements in Science and Education (FASE) $826,000 as support to produce the second set of FUTURES segments consisting of 12, 15-minute programs. The programs provide motivation for students to study math by connecting math to the work place and real-life problem scenarios. The programs are broadcast in 50 states through PBS Elementary and Secondary Service (E/SS). The grant term ended on December 16, 1993 and this final report documents program and financial activity results. The 12 episodes are titled: Animal Care, Meteorology, Mass Communication, Advanced Energy, Oceanography, Graphic Design, Future Habitats, Environmental Science & Technology, Fitness & Physical Performance, Interpersonal Communications, Advanced Transportation and Product Design. Each program addresses as many as ten careers or job types within the broader field named. Minority and gender-balanced role models appear throughout the programs.

  19. Buildings of the Future

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) and the Pacific Northwest National Laboratory are developing a vision for future buildings—at least one hundred years from today—based on the collective views of thought leaders. As part of this effort, we will explore technology and demographic trends that could revolutionize the built environment across energy, water, environment, resilient design, health, security, and productivity.

  20. 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,...

  1. 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...

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

    E-Print Network [OSTI]

    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 ...

  3. N=2 Supersymmetric Kinks and real algebraic curves

    E-Print Network [OSTI]

    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.

  4. 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...

  5. Normal holomorphic curves from parabolic regions to projective ...

    E-Print Network [OSTI]

    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.

  6. Supersymmetric branes on curved spaces and fluxes

    E-Print Network [OSTI]

    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...

  7. Aerodynamics of a rigid curved kite wing

    E-Print Network [OSTI]

    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...

  8. Calibration curves for some standard Gap Tests

    SciTech Connect (OSTI)

    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.

  9. Buying Hedge with Futures 

    E-Print Network [OSTI]

    Welch, Mark; Kastens, Terry L.

    2009-01-07

    , David Anderson and Terry Kastens* 2 hogs, corn, wheat and soybeans are a few examples. A notable exception is grain sorghum. Because of grain sorghum?s close price relationship to corn, producers can use corn futures to manage grain sorghum price... of gain) is 7. The cattle feeder?s projected feed requirement is 6,750 bushels (54,000 pounds total gain x 7 pounds of feed per pound of gain ? 56 pounds per bushel). Since one Chicago Board of Trade (CBOT) corn contract is specified as 5,000 bushels...

  10. Bioenergy: America's Energy Future

    ScienceCinema (OSTI)

    Nelson, Bruce; Volz, Sara; Male, Johnathan; Wolfson, Johnathan; Pray, Todd; Mayfield, Stephen; Atherton, Scott; Weaver, Brandon

    2014-08-12

    Bioenergy: America's Energy Future is a short documentary film showcasing examples of bioenergy innovations across the biomass supply chain and the United States. The film highlights a few stories of individuals and companies who are passionate about achieving the promise of biofuels and addressing the challenges of developing a thriving bioeconomy. This outreach product supports media initiatives to expand the public's understanding of the bioenergy industry and sustainable transportation and was developed by the U.S. Department of Energy Bioenergy Technologies Office (BETO), Oak Ridge National Laboratory, Green Focus Films, and BCS, Incorporated.

  11. Bioenergy: America's Energy Future

    SciTech Connect (OSTI)

    Nelson, Bruce; Volz, Sara; Male, Johnathan; Wolfson, Johnathan; Pray, Todd; Mayfield, Stephen; Atherton, Scott; Weaver, Brandon

    2014-07-31

    Bioenergy: America's Energy Future is a short documentary film showcasing examples of bioenergy innovations across the biomass supply chain and the United States. The film highlights a few stories of individuals and companies who are passionate about achieving the promise of biofuels and addressing the challenges of developing a thriving bioeconomy. This outreach product supports media initiatives to expand the public's understanding of the bioenergy industry and sustainable transportation and was developed by the U.S. Department of Energy Bioenergy Technologies Office (BETO), Oak Ridge National Laboratory, Green Focus Films, and BCS, Incorporated.

  12. ARM - Future Trends

    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 Comments? WeDatastreamstps DocumentationAtlanticENAField Participants Campaign Details News FieldgovFrontFuture

  13. Protecting America's Future

    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 mapSpeedingProgramExemptions |(Conference)ProjectProposedAmerica's Future The most

  14. Future City Competition

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HABFESOpportunities Nuclear Physics (NP) NP HomeSciencesreactorFuture

  15. Nuclear and Particle Futures

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesseworkSURVEY UNIVERSE The 2014 surveyNuclear and Particle Futures Nuclear and

  16. NYMEX Futures Prices

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural GasEIARegionalMethodology forNYMEX Futures Prices

  17. Low Cost Security: Explicit Formulae for Genus 4 Hyperelliptic Curves

    E-Print Network [OSTI]

    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

  18. Stochastic Analysis of Wind Turbine Power Curves Edgar Anahua

    E-Print Network [OSTI]

    Peinke, Joachim

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

  19. Fast Quadrupling of a Point on Elliptic Curves Cryptography

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    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

  1. COMPLETE BOUNDED NULL CURVES IMMERSED IN C3

    E-Print Network [OSTI]

    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

  2. Embeddings of Surfaces, Curves, and Moving Points in Euclidean Space

    E-Print Network [OSTI]

    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

  3. Dark halo properties from rotation curves

    E-Print Network [OSTI]

    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.

  4. Milk Futures, Options and Basis 

    E-Print Network [OSTI]

    Haigh, Michael; Stockton, Matthew; Anderson, David P.; Schwart Jr., Robert B.

    2001-10-12

    The milk futures and options market enables producers and processors to manage price risk. This publication explains hedging, margin accounts, basis and how to track it, and other fundamentals of the futures and options market....

  5. Cosmological Applications of Algebraic Quantum Field Theory in Curved Spacetimes

    E-Print Network [OSTI]

    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...

  6. Shifting the cost curve for subsea developments

    SciTech Connect (OSTI)

    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.

  7. IMPROVING FUTURE CLIMATE PREDICTION USING

    E-Print Network [OSTI]

    Henderson, Gideon

    IMPROVING FUTURE CLIMATE PREDICTION USING PALAEOCLIMATE DATA A community White Paper for consideration by the Natural Environment Research Council, UK #12;#12;IMPROVING FUTURE CLIMATE PREDICTION USING Climate Symposium 2008 - Earth's Climate: Past, Present and Future", convened by H. Elderfield, M. Bickle

  8. The semantics of the future

    E-Print Network [OSTI]

    Copley, Bridget, Lynn, 1974-

    2002-01-01

    Natural languages use a number of different methods to refer to future eventualities: among them are futurates, as in (la), and futures, as in (lb) and (c). (1) a. The Red Sox (are) play(ing) the Yankees tomorrow. b. We'll ...

  9. (and the future) Mike Cruise

    E-Print Network [OSTI]

    Crowther, Paul

    AGP 2009 (and the future) Mike Cruise #12;The 2009 Grants Round · The funding model we were working years and in future rounds. · At the level of 75 posts modelling indicates there would be 12 SG and only's awarded out of 20 #12;The Future · If the grants funding were limited to the equivalent of about 56 posts

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

    SciTech Connect (OSTI)

    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.

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

    SciTech Connect (OSTI)

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

    2014-06-01

    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.

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

    DOE Patents [OSTI]

    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.

  13. The roles of the binodal curve and the spinodal curve in expansions from the supercritical state with flashing

    SciTech Connect (OSTI)

    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.

  14. Future Directions in Spatial Demography, Final Report

    E-Print Network [OSTI]

    Matthews, Stephen A.; Janelle, Donald G.; Goodchild, Michael F.

    2012-01-01

    the meeting’s final reception. Future Directions in SpatialH. (2007) Five Minds for the Future. Cambridge, MA: Harvardhorizons, envisioning the future. Social Science and

  15. GENETICS, BREEDING, AND MODELING Use of Lactation Curves for Analysis

    E-Print Network [OSTI]

    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

  16. Convex hulls of a curve in control theory

    SciTech Connect (OSTI)

    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.

  17. Galaxy rotation curves with log-normal density distribution

    E-Print Network [OSTI]

    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...

  18. NATURE OF SINGULARITIES FOR ANALYTICITY DOMAINS OF INVARIANT CURVES 1

    E-Print Network [OSTI]

    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

  19. Perspective+Detail a visualization technique for vertically curved displays

    E-Print Network [OSTI]

    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

  20. A New 24 ?m Phase Curve for ? Andromedae b

    E-Print Network [OSTI]

    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 ...

  1. Application of the decline curve method to aquifers 

    E-Print Network [OSTI]

    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...

  2. Automatic classification of eclipsing binaries light curves using neural networks

    E-Print Network [OSTI]

    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.

  3. Seiberg-Witten curve via generalized matrix model

    E-Print Network [OSTI]

    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.

  4. The Wave of the Future 

    E-Print Network [OSTI]

    Swyden, Courtney

    2006-01-01

    stream_source_info The wave of the future.pdf.txt stream_content_type text/plain stream_size 10577 Content-Encoding ISO-8859-1 stream_name The wave of the future.pdf.txt Content-Type text/plain; charset=ISO-8859...-1 The Wave of the Future Story by Courtney Swyden THEWAVE OF THE FUTURE tx H2O | pg. 2 Plans use local involvement to enhance water quality Comprehensive watershed protection plans,outlining ways to preserve or restore water-sheds, are becoming a popular...

  5. Hydrogen: Fueling the Future

    SciTech Connect (OSTI)

    Leisch, Jennifer

    2007-02-27

    As our dependence on foreign oil increases and concerns about global climate change rise, the need to develop sustainable energy technologies is becoming increasingly significant. Worldwide energy consumption is expected to double by the year 2050, as will carbon emissions along with it. This increase in emissions is a product of an ever-increasing demand for energy, and a corresponding rise in the combustion of carbon containing fossil fuels such as coal, petroleum, and natural gas. Undisputable scientific evidence indicates significant changes in the global climate have occurred in recent years. Impacts of climate change and the resulting atmospheric warming are extensive, and know no political or geographic boundaries. These far-reaching effects will be manifested as environmental, economic, socioeconomic, and geopolitical issues. Offsetting the projected increase in fossil energy use with renewable energy production will require large increases in renewable energy systems, as well as the ability to store and transport clean domestic fuels. Storage and transport of electricity generated from intermittent resources such as wind and solar is central to the widespread use of renewable energy technologies. Hydrogen created from water electrolysis is an option for energy storage and transport, and represents a pollution-free source of fuel when generated using renewable electricity. The conversion of chemical to electrical energy using fuel cells provides a high efficiency, carbon-free power source. Hydrogen serves to blur the line between stationary and mobile power applications, as it can be used as both a transportation fuel and for stationary electricity generation, with the possibility of a distributed generation energy infrastructure. Hydrogen and fuel cell technologies will be presented as possible pollution-free solutions to present and future energy concerns. Recent hydrogen-related research at SLAC in hydrogen production, fuel cell catalysis, and hydrogen storage will be highlighted in this seminar.

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  7. CSIRO AUSTRALIA Future Emissions and

    E-Print Network [OSTI]

    CSIRO AUSTRALIA Future Emissions and Concentrations of Carbon Dioxide: Key Ocean Cataloguing­in­Publication Entry Enting, I.G. Future Emissions and Concentrations of Carbon Dioxide: Key Ocean Emissions and Concentrations of Carbon Dioxide: Key Ocean/Atmosphere/Land Analyses Written and edited by I

  8. Rights, Obligations, and Future Generations

    E-Print Network [OSTI]

    Strole, Donald

    the right to use whatever we can regardless of the effects such action may have on future persons.2 On the other extreme are people who argue that future generations are entitled to a polution free environment, vast food reserves, and an abundance...

  9. The Future of Geothermal Energy

    E-Print Network [OSTI]

    Ito, Garrett

    The Future of Geothermal Energy Impact of Enhanced Geothermal Systems (EGS) on the United States in the 21st Century #12;The Future of Geothermal Energy Impact of Enhanced Geothermal Systems (EGS and Renewable Energy, Office of Geothermal Technologies, Under DOE Idaho Operations Office Contract DE-AC07-05ID

  10. Alternative futures: Have EPA projects

    E-Print Network [OSTI]

    Jenny, Bernhard

    Alternative futures: Have EPA projects made a difference? Denis White, US EPA, Research Richard are alternative futures assessments? A process by which to evaluate potential changes to land and water use, where Two or more alternative landscape-scale scenarios are considered, The alternatives are represented

  11. President's The Future of Health

    E-Print Network [OSTI]

    Alexandrova, Ivana

    President's Forum on Data The Future of Health Data Analytics 2nd ANNUAL FORUM TUESDAY, FEBRUARY 24's Forum is focused on a critical and timely topic: The Future of Health Data Analytics. Across the nation, groundbreaking advances in capturing, managing, and using data in health care are making it possible to push

  12. Evidence for Microvariability in the Optical Light Curve of the Type Ia SN 2014J

    E-Print Network [OSTI]

    Bonanos, A Z

    2015-01-01

    We present results of high-cadence monitoring of the optical light curve of the nearby, Type Ia SN 2014J in M82 using the 2.3m Aristarchos telescope. $B$ and $V$-band photometry on days 15-18 after $t_{max}(B)$, obtained with a cadence of 2 min per band, reveals evidence for variability at the 0.02-0.05 mag level on timescales of 15-60 min on all four nights. The decline slope was measured to be steeper in the $B$-band than in $V$-band, and to steadily decrease in both bands from 0.15 mag/day (night 1) to 0.04 mag/day (night 4) in V and from 0.19 mag/day (night 1) to 0.06 mag/day (night 4) in B, corresponding to the onset of the secondary maximum. We propose that microvariability could be due to one or a combination of the following scenarios: the clumpiness of the ejecta, their interaction with circumstellar material, the asymmetry of the explosion, or the mechanism causing the secondary maximum in the near-infrared light curve. We encourage the community to undertake high-cadence monitoring of future, nearb...

  13. Light curves and polarization of accretion- and nuclear-powered millisecond pulsars

    E-Print Network [OSTI]

    Kerttu Viironen; Juri Poutanen

    2004-08-13

    We study theoretical X-ray light curves and polarization properties of accretion-powered millisecond pulsars. We assume that the radiation is produced in two antipodal spots at the neutron star surface which are associated with the magnetic poles. We compute the angle-dependent intensity and polarization produced in an electron-scattering dominated plane-parallel accretion shock in the frame of the shock. The observed flux, polarization degree and polarization angle are calculated accounting for special and general relativistic effects. The calculations also extended to the case of nuclear-powered millisecond pulsars -- X-ray bursts. In this case, we consider one spot and the radiation is assumed to be produced in the atmosphere of the infinite Thomson optical depth. The light curves and polarization profiles show a large diversity depending on the model parameters. Presented results can be used as a first step to understand the observed pulse profiles of accretion- and nuclear-powered millisecond pulsars. Future observations of the X-ray polarization will provide a valuable tool to test the geometry of the emission region and its physical characteristics.

  14. Scalar potential model of spiral galaxy HI rotation curves and rotation curve asymmetry

    E-Print Network [OSTI]

    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.

  15. The hidden X-ray breaks in afterglow light curves

    SciTech Connect (OSTI)

    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.

  16. Visualization of Growth Curve Data from Phenotype MicroarrayExperiments

    SciTech Connect (OSTI)

    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.

  17. An extinction curve template for intrinsically reddened quasars

    E-Print Network [OSTI]

    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 ($...

  18. Combined Solar System and rotation curve constraints on MOND

    E-Print Network [OSTI]

    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.

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

    SciTech Connect (OSTI)

    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.

  20. Automatic generation and analysis of solar cell IV curves

    SciTech Connect (OSTI)

    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.

  1. The Hardy inequality and the heat flow in curved wedges

    E-Print Network [OSTI]

    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.

  2. Curved Herbig-Haro Jets: Simulations and Experiments

    E-Print Network [OSTI]

    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.

  3. AUTO ID FUTURE - FREQUENCY AGNOSTIC

    E-Print Network [OSTI]

    DATTA, SHOUMEN

    Identification of information is one key to the development of intelligent decision systems of the future. Frequency agnostic automatic identification is only one step in the physical world to make physical objects identify ...

  4. CURRENT FUTURE Students taking Introduction

    E-Print Network [OSTI]

    Linhardt, Robert J.

    an additive manufacturing center, and a common large project space » develop a showcase of advanced technologies in; additive manufacturing, composites, advanced machin- ing, manufacturing systems controlCURRENT FUTURE Students taking Introduction to Engineering Design, the new Manufacturing Processes

  5. The Future of Microbial Genomics

    SciTech Connect (OSTI)

    Kyrpides, Nikos [Genome Biology group at the DOE Joint Genome Institute

    2010-06-02

    Nikos Kyrpides, head of the Genome Biology group at the DOE Joint Genome Institute discusses current challenges in the field of microbial genomics on June 2, 2010 at the "Sequencing, Finishing, Analysis in the Future" meeting in Santa Fe, NM

  6. Quantum effects near future singularities

    E-Print Network [OSTI]

    John D. Barrow; Antonio B. Batista; Giuseppe Dito; Julio C. Fabris; M. J. S. Houndjo

    2012-01-09

    General relativity allows a variety of future singularities to occur in the evolution of the universe. At these future singularities, the universe will end in a singular state after a finite proper time and geometrical invariants of the space time will diverge. One question that naturally arises with respect to these cosmological scenarios is the following: can quantum effects lead to the avoidance of these future singularities? We analyze this problem considering massless and conformally coupled scalar fields in an isotropic and homogeneous background leading to future singularities. It is shown that near strong, big rip-type singularities, with violation of the energy conditions, the quantum effects are very important, while near some milder classes of singularity like the sudden singularity, which preserve the energy conditions, quantum effects are irrelevant.

  7. Independent Inventors: An Uncertain Future

    E-Print Network [OSTI]

    Pi, Xiaoqing

    2013-01-01

    https://www.eff.org/patent Inventors Alliance http://A.  Cotropia, “The Individual Inventor Motif in the Age of Title: Independent Inventors: An Uncertain Future Abstract:

  8. Texas Industries of the Future 

    E-Print Network [OSTI]

    Ferland, K.

    2002-01-01

    The purpose of the Texas Industries of the Future program is to facilitate the development, demonstration and adoption of advanced technologies and adoption of best practices that reduce industrial energy usage, emissions, and associated costs...

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

    E-Print Network [OSTI]

    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...

  10. Future methane, hydroxyl, and their uncertainties: key climate and emission parameters for future predictions

    E-Print Network [OSTI]

    Holmes, C. D; Prather, M. J; Sovde, O. A; Myhre, G.

    2013-01-01

    of present-day and future OH and methane lifetime, Atmos.Chemistry and Physics Future methane, hydroxyl, and theirand emission parameters for future predictions C. D. Holmes

  11. Fast and compact elliptic-curve cryptography Mike Hamburg

    E-Print Network [OSTI]

    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

  12. A Construction for Computer Visualization Certain Complex Curves

    E-Print Network [OSTI]

    Indiana University

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

  13. CURVES, K3 SURFACES, FANO THREEFOLDS PAUL HACKING

    E-Print Network [OSTI]

    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

  14. Tracking stochastic resonance curves using an assisted reference model

    SciTech Connect (OSTI)

    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.

  15. The Orbital Light Curve of Aquila X-1

    E-Print Network [OSTI]

    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.

  16. Late Time Tail of Wave Propagation on Curved Spacetime

    E-Print Network [OSTI]

    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.

  17. Supplemental Material Generalized Streak Lines Advected Tangent Curves

    E-Print Network [OSTI]

    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

  18. Compiler Assisted Elliptic Curve Cryptography M. Barbosa1

    E-Print Network [OSTI]

    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

  19. RIEMANN SURFACES, PLANE ALGEBRAIC CURVES AND THEIR PERIOD MATRICES

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    Duursma, Iwan M.

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

  1. Symmetries for Galileons and DBI scalars on curved space

    SciTech Connect (OSTI)

    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.

  2. Testing MONDian dark matter with galactic rotation curves

    SciTech Connect (OSTI)

    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.

  3. Fast Software Implementation of Binary Elliptic Curve Cryptography

    E-Print Network [OSTI]

    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

  4. Twisted Ate Pairing on Hyperelliptic Curves and Applications

    E-Print Network [OSTI]

    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

  5. Twisted Ate Pairing on Hyperelliptic Curves and Applications

    E-Print Network [OSTI]

    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

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

    SciTech Connect (OSTI)

    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.

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

    E-Print Network [OSTI]

    resources costs as being ranges rather than fixed values. It is evident that the question of future solar PV for transmission expansion. Consequently, the future estimated cost projection for solar PV has been a point for solar PV should be dramatically changed "downward" going forward (i.e., significantly less of a cost

  8. FutureGen Project Report

    SciTech Connect (OSTI)

    Cabe, Jim; Elliott, Mike

    2010-09-30

    This report summarizes the comprehensive siting, permitting, engineering, design, and costing activities completed by the FutureGen Industrial Alliance, the Department of Energy, and associated supporting subcontractors to develop a first of a kind near zero emissions integrated gasification combined cycle power plant and carbon capture and storage project (IGCC-CCS). With the goal to design, build, and reliably operate the first IGCC-CCS facility, FutureGen would have been the lowest emitting pulverized coal power plant in the world, while providing a timely and relevant basis for coal combustion power plants deploying carbon capture in the future. The content of this report summarizes key findings and results of applicable project evaluations; modeling, design, and engineering assessments; cost estimate reports; and schedule and risk mitigation from initiation of the FutureGen project through final flow sheet analyses including capital and operating reports completed under DOE award DE-FE0000587. This project report necessarily builds upon previously completed siting, design, and development work executed under DOE award DE-FC26- 06NT4207 which included the siting process; environmental permitting, compliance, and mitigation under the National Environmental Policy Act; and development of conceptual and design basis documentation for the FutureGen plant. For completeness, the report includes as attachments the siting and design basis documents, as well as the source documentation for the following: • Site evaluation and selection process and environmental characterization • Underground Injection Control (UIC) Permit Application including well design and subsurface modeling • FutureGen IGCC-CCS Design Basis Document • Process evaluations and technology selection via Illinois Clean Coal Review Board Technical Report • Process flow diagrams and heat/material balance for slurry-fed gasifier configuration • Process flow diagrams and heat/material balance for dry-fed gasifier configuration • Full capital cost report and cost category analysis (CAPEX) • Full operating cost report and assumptions (OPEX) Comparative technology evaluations, value engineering exercises, and initial air permitting activities are also provided; the report concludes with schedule, risk, and cost mitigation activities as well as lessons learned such that the products of this report can be used to support future investments in utility scale gasification and carbon capture and sequestration. Collectively, the FutureGen project enabled the comprehensive site specific evaluation and determination of the economic viability of IGCC-CCS. The project report is bound at that determination when DOE formally proposed the FutureGen 2.0 project which focuses on repowering a pulverized coal power plant with oxy-combustion technology including CCS.

  9. California's Energy Future - The View to 2050

    E-Print Network [OSTI]

    2011-01-01

    Summit on America’s Energy Future (2008), http://www.natural gas. California’s Energy Future - The View to 2050supply California’ s Energy Future - The View to 2050 and

  10. Introduction: California's Growth: An Uncertain Future

    E-Print Network [OSTI]

    Teitz, Michael B.

    2008-01-01

    s Growth: An Uncertain Future BY MICHAEL B. TEITZ Editor'shave to be California’s future? Clearly, not so. This ofat the issue of accommodating future tions within them, for

  11. Future Directions in Spatial Demography, Position Papers

    E-Print Network [OSTI]

    Center for Spatial Studies (UCSB), Population Research Institute (Pennsylvania State University)

    2011-01-01

    2011 Specialist Meeting—Future Directions in Spatial3–13. 2011 Specialist Meeting—Future Directions in SpatialInc. 2011 Specialist Meeting—Future Directions in Spatial

  12. Future Directions for Federal Research Funding

    E-Print Network [OSTI]

    i Future Directions for Federal Research Funding Merrill Series on The Research Cells: Current Challenges and Future Promise First panel of research administrators Prem Paul and Developmental Disabilities Research Center, University of Kansas Past as Prelude: Lessons for the Future

  13. Future Forests Program Plan 2013 2016

    E-Print Network [OSTI]

    1 Future Forests Program Plan 2013 ­ 2016 (November 2012) #12;2 Summary Mission and vision The mission of Future Forests is to provide management of forests in a future characterized by change. Our vision

  14. Multiple hypothesis testing -recent developments and future

    E-Print Network [OSTI]

    Steinsland, Ingelin

    NTNU Multiple hypothesis testing - recent developments and future challenges Ingelin Steinsland developments and future challenges ­ p.1/28 #12;NTNU Outline Single hypothesis testing Multiple hypothesis testing Quantities and issues False discovery rates Future challenges Within false discovery rates

  15. Brain Receptor Structures Key to Future Therapeutics

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

    Brain Receptor Structures Key to Future Therapeutics Brain Receptor Structures Key to Future Therapeutics Print Wednesday, 28 January 2015 00:00 With an aging population in...

  16. Rocky Mountain Futures: An Ecological Perspective

    E-Print Network [OSTI]

    Aguero, Tania

    2003-01-01

    changes in the Rocky Mountains, global warming, and severalReview: Rocky Mountain Futures: An Ecological Perspective ByJill S. Baron (Ed. ). Rocky Mountain Futures: An Ecological

  17. Edmund G. Brown Jr. LIGHTING CALIFORNIA'S FUTURE

    E-Print Network [OSTI]

    Edmund G. Brown Jr. Governor LIGHTING CALIFORNIA'S FUTURE: SMART LIGHT-EMITTING DIODE LIGHTING's Future: Smart LightEmitting Diode Lighting in Residential Fans. California Energy Commission, PIER

  18. California's Energy Future - The View to 2050

    E-Print Network [OSTI]

    2011-01-01

    renewable case) alone almost exceed the target emissions. California’s Energy Future -renewable energy, i.e. the “median case. ” California’s Energy Future -

  19. Knowledge Exchange at CRFR: Past, present, future 

    E-Print Network [OSTI]

    Morton, Sarah

    to the future. It discusses CRFR’s approach to KE, showcases some highlights of its KE activities, and identifies challenges for the future....

  20. Future Bottlenecks for Industrial Water Recycling. (Conference...

    Office of Scientific and Technical Information (OSTI)

    Future Bottlenecks for Industrial Water Recycling. Citation Details In-Document Search Title: Future Bottlenecks for Industrial Water Recycling. Authors: Brady, Patrick V....

  1. Presentation to EAC: Renewable Electricity Futures Activities...

    Energy Savers [EERE]

    Presentation to EAC: Renewable Electricity Futures Activities & Status, October 29, 2010 Presentation to EAC: Renewable Electricity Futures Activities & Status, October 29, 2010...

  2. Hydrogen & Our Energy Future | Department of Energy

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

    Energy Future Hydrogen & Our Energy Future DOE overview of hydrogen fuel initiative and hydrogen production, delivery and storate hydrogenenergyfutureweb.pdf More Documents &...

  3. Saving for the future self: Neural measures of future self-continuity predict temporal discounting

    E-Print Network [OSTI]

    Knutson, Brian

    Saving for the future self: Neural measures of future self-continuity predict temporal discounting gains over future gains. According to a future self-continuity hypothesis, individuals per- ceive and treat the future self differently from the present self, and so might fail to save for their future

  4. Future

    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 of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find whatGasEnergyfeatureCleanperformance for

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

    E-Print Network [OSTI]

    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...

  6. Sagittal focusing of synchrotron x radiation with curved crystals

    SciTech Connect (OSTI)

    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.

  7. Curve fitting methods for solar radiation data modeling

    SciTech Connect (OSTI)

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

    2014-10-24

    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.

  8. Trapping and guiding surface plasmons in curved graphene landscapes

    E-Print Network [OSTI]

    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.

  9. A consideration of a micro-Phillips' Curve 

    E-Print Network [OSTI]

    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...

  10. Generation of Closed Timelike Curves with Rotating Superconductors

    E-Print Network [OSTI]

    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.

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

    E-Print Network [OSTI]

    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.

  12. Future Prospects of Synthetic Fuels 

    E-Print Network [OSTI]

    Fryback, M. G.

    1982-01-01

    It is important for the future of this nation to reach the goal of demonstrated definition and quantification of the parameters which influence the ability to use this country's vast resources of coal and oil shale for production of synthetic fuels...

  13. The Future of Forensic DNA

    E-Print Network [OSTI]

    History and Mission · National Institute of Standards and Technology (NIST) was created in 1901The Future of Forensic DNA John M. Butler, PhD National Institute of Standards and Technology.S. Department of Commerce with a mission to develop and promote measurement, standards, and technology

  14. Options for Kentucky's Energy Future

    SciTech Connect (OSTI)

    Larry Demick

    2012-11-01

    Three important imperatives are being pursued by the Commonwealth of Kentucky: ? Developing a viable economic future for the highly trained and experienced workforce and for the Paducah area that today supports, and is supported by, the operations of the US Department of Energy’s (DOE’s) Paducah Gaseous Diffusion Plant (PGDP). Currently, the PGDP is scheduled to be taken out of service in May, 2013. ? Restructuring the economic future for Kentucky’s most abundant indigenous resource and an important industry – the extraction and utilization of coal. The future of coal is being challenged by evolving and increasing requirements for its extraction and use, primarily from the perspective of environmental restrictions. Further, it is important that the economic value derived from this important resource for the Commonwealth, its people and its economy is commensurate with the risks involved. Over 70% of the extracted coal is exported from the Commonwealth and hence not used to directly expand the Commonwealth’s economy beyond the severance taxes on coal production. ? Ensuring a viable energy future for Kentucky to guarantee a continued reliable and affordable source of energy for its industries and people. Today, over 90% of Kentucky’s electricity is generated by burning coal with a delivered electric power price that is among the lowest in the United States. Anticipated increased environmental requirements necessitate looking at alternative forms of energy production, and in particular electricity generation.

  15. Natural Gas Futures Prices (NYMEX)

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

    093015 View History Spot Price Henry Hub 2.62 2.62 2.60 2.66 2.57 1997-2015 Futures Prices Contract 1 2.569 2.591 2.564 2.563 2.586 2.524 1994-2015 Contract 2 2.638 2.674 2.631...

  16. Future hadron physics at Fermilab

    SciTech Connect (OSTI)

    Appel, Jeffrey A.; /Fermilab

    2005-09-01

    Today, hadron physics research occurs at Fermilab as parts of broader experimental programs. This is very likely to be the case in the future. Thus, much of this presentation focuses on our vision of that future--a future aimed at making Fermilab the host laboratory for the International Linear Collider (ILC). Given the uncertainties associated with the ILC--the level of needed R&D, the ILC costs, and the timing--Fermilab is also preparing for other program choices. I will describe these latter efforts, efforts focused on a Proton Driver to increase the numbers of protons available for experiments. As examples of the hadron physics which will be coming from Fermilab, I summarize three experiments: MIPP/E907 which is running currently, and MINERvA and Drell-Yan/E906 which are scheduled for future running periods. Hadron physics coming from the Tevatron Collider program will be summarized by Arthur Maciel in another talk at Hadron05.

  17. Exotic mesons: status and future

    E-Print Network [OSTI]

    Eberhard Klempt

    2007-11-22

    The evidence for the existence of mesons with exotic quantum numbers and of hybrid candidates with non-exotic quantum numbers is critically reviewed, including candidates with hidden charm. Aims and methods of future searches for hybrid mesons are briefly discussed.

  18. Plans for future B factories

    E-Print Network [OSTI]

    Peter Krizan

    2011-03-07

    The paper discusses future experiments at super $B$ factories. It presents the physics motivation and the tools, accelerators and detectors, and reviews the status of the two projects, SuperKEKB/Belle-II in Japan and SuperB in Italy.

  19. Charm Factories: Present and Future

    E-Print Network [OSTI]

    Peter Zweber; for the BESIII Collaboration

    2009-08-17

    The next generation tau-charm factory, the third Beijing Electron Spectrometer (BESIII) at the new Beijing Electron Positron Collider (BEPCII), has begun data collection. I discuss the flavor physics reach of the BESIII charm program and conclude with a discussion on future proposed tau-charm facilities.

  20. Quantum field theory in curved graphene spacetimes, Lobachevsky geometry, Weyl symmetry, Hawking effect, and all that

    E-Print Network [OSTI]

    Alfredo Iorio; Gaetano Lambiase

    2014-12-15

    The solutions of many issues, of the ongoing efforts to make deformed graphene a tabletop quantum field theory in curved spacetimes, are presented. A detailed explanation of the special features of curved spacetimes, originating from embedding portions of the Lobachevsky plane into $\\mathbf{R}^3$, is given, and the special role of coordinates for the physical realizations in graphene, is explicitly shown, in general, and for various examples. The Rindler spacetime is reobtained, with new important differences with respect to earlier results. The de Sitter spacetime naturally emerges, for the first time, paving the way to future applications in cosmology. The role of the BTZ black hole is also briefly addressed. The singular boundary of the pseudospheres, "Hilbert horizon", is seen to be closely related to event horizon of the Rindler, de Sitter, and BTZ kind. This gives new, and stronger, arguments for the Hawking phenomenon to take place. An important geometric parameter, $c$, overlooked in earlier work, takes here its place for physical applications, and it is shown to be related to graphene's lattice spacing, $\\ell$. It is shown that all surfaces of constant negative curvature, ${\\cal K} = -r^{-2}$, are unified, in the limit $c/r \\to 0$, where they are locally applicable to the Beltrami pseudosphere. This, and $c = \\ell$, allow us a) to have a phenomenological control on the reaching of the horizon; b) to use spacetimes different than Rindler for the Hawking phenomenon; c) to approach the generic surface of the family. An improved expression for the thermal LDOS is obtained. A non-thermal term for the total LDOS is found. It takes into account: a) the peculiarities of the graphene-based Rindler spacetime; b) the finiteness of a laboratory surface; c) the optimal use of the Minkowski quantum vacuum, through the choice of this Minkowski-static boundary.

  1. A Calibrated Maxey-Eakin Curve for the Fenner Basin of the Eastern Mojave Desert, California

    SciTech Connect (OSTI)

    Davisson, M.L.; Rose, T.P.

    2000-05-15

    Metropolitan Water District (MWD) of southern California and Cadiz Inc. investigated the feasibility of storing Colorado River water in groundwater aquifers of the eastern Mojave Desert as a future drought mitigation strategy. This culminated in the public release of the Cadiz Groundwater Storage and Dry-Year Supply program Draft EIR, which included pilot percolation studies, groundwater modeling, and precipitation/runoff analysis in the Fenner groundwater basin, which overlies the proposed storage site. The project proposes to store and withdrawal Colorado River water over a 50-year period, but will not exceed the natural replenishment rates of the groundwater basin. Several independent analyses were conducted to estimate the rates of natural groundwater replenishment to the Fenner Groundwater Basin, which was included in the Draft EIR. The US Geologic Survey, Water Resources Division (WRD) officially submitted comments during public review and concluded that the natural groundwater replenishment rates calculated for the Draft EIR were too high. In the WRD review, they provided a much lower recharge calculation based on a Maxey-Eakin estimation approach. This approach estimates annual precipitation over an entire basin as a function of elevation, followed by calibration against annual recharge rates. Recharge rates are estimated on the basis that some fraction of annual precipitation will recharge, and that fraction will increase with increasing elevation. This results in a hypothetical curve relating annual groundwater recharge to annual precipitation. Field validation of recharge rates is critical in order to establish credibility to any estimate. This is due to the fact that the Maxey-Eakin model is empirical. An empirical model is derived from practical experience rather than basic theory. Therefore, a validated Maxey-Eakin model in one groundwater basin does not translate to a different one. In the WRD's Maxey-Eakin model, they used a curve calibrated against three locations in western Nevada and applied it to the Fenner Basin. It is of particular importance to note that all three of the WRD's location are west of longitude 116{sup o}W, where annual precipitation is significantly lower. Therefore, The WRD's Maxey-Eakin curve was calibrated to a drier climate, and its application to the Fenner Basin lacks credibility.

  2. Control and Protection Paradigms of the Future

    E-Print Network [OSTI]

    Control and Protection Paradigms of the Future Future Grid Thrust Area 2 White Paper Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;Thrust Area 2 White Paper Control and Protection Paradigms of the Future Project Team C.L. DeMarco, C.A. Baone, B

  3. Chirac calls ITER essential for planet's future

    E-Print Network [OSTI]

    Chirac calls ITER essential for planet's future CADARACHE, France, June 30 (AFP) - French President in southern France as vital to the planet's future, praising European solidarity in sealing the deal. "This project is essential for our future and the future of the planet," Chirac told some 1,500 invited guests

  4. The Future of Research in Computer Games

    E-Print Network [OSTI]

    Demsky, Brian

    The Future of Research in Computer Games and Virtual Worlds The Future of Research in Computer Games and Virtual Worlds #12;The Future of Research in Computer Games and Virtual World Environments on the Future of Research and Challenges in Computer Games and Virtual Worlds * Citation and online version

  5. Water Requirements for Future Energy production in California

    E-Print Network [OSTI]

    Sathaye, Jayant A.; Ritschard, R.L.

    1977-01-01

    NEVADA: REQUIREMENTS FOR FUTURE ENERGY PRODUCTION STATE'SWATERREQUIREMENTS FOR FUTURE ENERGY PRODUCTIONIN ENERGYREQUIREMENTS FOR FUTURE ENERGY PRODUCTION IN CALIFORNIA

  6. Water Requirements for Future Energy production in California

    E-Print Network [OSTI]

    Sathaye, J.A.

    2011-01-01

    NEVADA: REQUIREMENTS FOR FUTURE ENERGY PRODUCTION STATE'SWATERREQUIREMENTS FOR FUTURE ENERGY PRODUCTIONIN ENERGYREQUIREMENTS FOR FUTURE ENERGY PRODUCTION IN CALIFORNIA

  7. Future Power Systems 21 - The Smart Customer | Department of...

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

    Future Power Systems 21 - The Smart Customer Future Power Systems 21 - The Smart Customer Future Power Systems 21 - The Smart Customer: From Future Power Systems (FPS) articles 18...

  8. Status and Future of TRANSCOM | Department of Energy

    Office of Environmental Management (EM)

    and Future of TRANSCOM Status and Future of TRANSCOM Current Program Status Upcoming Changes Glimpse at Future Options DOE Commitments Status and Future of TRANSCOM More Documents...

  9. On estimating functional average breakthrough curve using time-warping technique and perturbation approach

    E-Print Network [OSTI]

    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

  10. On the Computation of Integral Curves in Adaptive Mesh Refinement Vector Fields

    E-Print Network [OSTI]

    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?

  11. Conjectured Security of the ANSI-NIST Elliptic Curve RNG Daniel R. L. Brown

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

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

  13. Plutonium management for the future

    SciTech Connect (OSTI)

    Pillay, K.K.S.

    1996-05-01

    Managment of excess nuclear materials from US weapons dismantlement has been the subject of numerous intellectual discussions during the past 5 years. Although there has been some objective recommendations, there is still much controversy surrounding the procsses that could lead to a national decision on Pu management. Two immediate needs are to secure the inventories of all Pu in safe configurations and to develop strategies for reducing proliferation risks. Specific suggestions discussed here are to (a) accept the deterrence value of Pu, (b) reappraise its potential as an energy resource, (c) recognize limitations to influence the future of Pu use world-wide, (d) isolate recoverable weapons-grade Pu and store it in stable configurations under international safeguards, and (e) manage Pu in spent fuels so that the valuable resources are not lost to a future generation.

  14. Dark Energy Present and Future

    E-Print Network [OSTI]

    Paul H. Frampton

    2003-07-03

    By studying the present cosmological data, particularly on CMB, SNeIA and LSS, we find that the future fate of the universe, for simple linear models of the dark energy equation-of-state, can vary between the extremes of (I) a divergence of the scale factor in as little as 7 Gyr; (II) an infinite lifetime of the universe with dark energy dominant for all future time; (III) a disappearing dark energy where the universe asymptotes as $t \\to \\infty$ to $a(t) \\sim t^{2/3}$ {\\it i.e.} matter domination. Precision cosmological data hint that a dark energy with equation of state $w = P/\\rho 0$ to $\\Lambda = 0$ in a first-order phase transition. The critical radius is argued to be at least of galactic size and the corresponding nucleation rate glacial, thus underwriting the dark energy's stability and rendering remote any microscopic effect.

  15. Natural Gas Futures Prices (NYMEX)

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

    15 View History Spot Price Henry Hub 2.75 2.69 2.69 2.70 2.70 2.61 1997-2015 Futures Prices Contract 1 2.72 2.68 2.68 2.68 2.68 2.57 1994-2015 Contract 2 2.75 2.70 2.76 2.76 2.75...

  16. Natural Gas Futures Prices (NYMEX)

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

    2.75 3.73 1997-2013 NGPL Composite 8.99 11.83 15.12 10.98 9.94 9.56 2007-2014 Futures Prices Contract 1 4.159 4.382 4.03 2.83 3.73 1994-2013 Contract 2 4.428 4.471 4.09 2.93 3.77...

  17. On-line monitoring of power curves Andrew Kusiak*, Haiyang Zheng, Zhe Song

    E-Print Network [OSTI]

    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

  18. Potential energy curves for NO+ D. L. Albritton and A. L. Schmeltekopf

    E-Print Network [OSTI]

    ' 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

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

    E-Print Network [OSTI]

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

  20. Building curves with arbitrary small MOV degree over nite prime elds

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  2. Bolometric Light Curves of Type Ia Supernovae G. Contardo 1;2 , B. Leibundgut 1

    E-Print Network [OSTI]

    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

  3. Jacobi Quartic Curves Revisited Huseyin Hisil, Kenneth Koon-Ho Wong, Gary Carter, Ed Dawson

    E-Print Network [OSTI]

    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

  4. Number of Jacobi quartic curves over finite Rongquan Feng 1 , Hongfeng Wu 2

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    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.

  6. Transit light curves with finite integration time: Fisher information analysis

    SciTech Connect (OSTI)

    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.

  7. How current loops and solenoids curve space-time

    E-Print Network [OSTI]

    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.

  8. Validity of the Hadronic Freeze-Out Curve

    E-Print Network [OSTI]

    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.

  9. Learning Curves For Energy Technology: A Critical Assessment

    E-Print Network [OSTI]

    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...

  10. Tyre curve estimation in slip-controlled braking

    E-Print Network [OSTI]

    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...

  11. Wind Plant Cost of Energy: Past and Future (Presentation)

    SciTech Connect (OSTI)

    Hand, M.

    2013-03-01

    This presentation examines trends in wind plant cost of energy over the last several decades and discusses methods and examples of projections for future cost trends. First, the presentation explores cost trends for wind energy from the 1980s, where there had been an overall downward trend in wind plant energy costs. Underlying factors that influenced these trends, including turbine technology innovation for lower wind speed sites, are explored. Next, the presentation looks at projections for the future development of wind energy costs and discusses a variety of methods for establishing these projections including the use of learning curves, qualitative assessment using expert elicitation, and engineering-based analysis. A comparison of the methods is provided to explore their relative merits. Finally, a brief introduction is provided for the U.S. Department of Energy program-wide shift towards an integrative use of qualitative and quantitative methods for assessing the potential impacts of wind plant technology innovations on reducing the wind plant cost of energy.

  12. Existence and uniqueness theorems for massless fields on a class of spacetimes with closed timelike curves

    E-Print Network [OSTI]

    John L. Friedman; Michael S. Morris

    1994-11-12

    We study the massless scalar field on asymptotically flat spacetimes with closed timelike curves (CTC's), in which all future-directed CTC's traverse one end of a handle (wormhole) and emerge from the other end at an earlier time. For a class of static geometries of this type, and for smooth initial data with all derivatives in $L_2$ on ${\\cI}^{-}$, we prove existence of smooth solutions which are regular at null and spatial infinity (have finite energy and finite $L_2$-norm) and have the given initial data on $\\cI^-$. A restricted uniqueness theorem is obtained, applying to solutions that fall off in time at any fixed spatial position. For a complementary class of spacetimes in which CTC's are confined to a compact region, we show that when solutions exist they are unique in regions exterior to the CTC's. (We believe that more stringent uniqueness theorems hold, and that the present limitations are our own.) An extension of these results to Maxwell fields and massless spinor fields is sketched. Finally, we discuss a conjecture that the Cauchy problem for free fields is well defined in the presence of CTC's whenever the problem is well-posed in the geometric-optics limit. We provide some evidence in support of this conjecture, and we present counterexamples that show that neither existence nor uniqueness is guaranteed under weaker conditions. In particular, both existence and uniqueness can fail in smooth, asymptotically flat spacetimes with a compact nonchronal region.

  13. Thermal Via Placement in 3D ICs Brent Goplen

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    that as the size of thermal via islands increased, more heat removal was achieved but less space was available pronounced because of higher power densities and greater thermal resistance along heat dissipation paths cluster into parallel networks using the observation that heat transfer is much more efficient vertically

  14. The Parallel Evaluation of General Arithmetic Expressions RICHARD P. BRENT

    E-Print Network [OSTI]

    Bernstein, Daniel

    that apply if a fixed number of processors is available, see Section 5.) Kuck and Maruyama [12] have shown in time 2 log:n + 0 (1). Kuck [10], Maruyama [15], and Muraoka [20] have bonsidered expressions be of practical value, for Kuck [11] has shown that an optimizing compiler for a parallel machine might generat

  15. SU2009_NUG-Brent-R2.ppt

    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, High-Throughput Analysis of Protein1-0845*RV6STAT 12293GGObjective SU2009 Procurement

  16. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy MotionshaleLocalNuclearmilestonesNEET-3 FY

  17. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy MotionshaleLocalNuclearmilestonesNEET-3

  18. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy MotionshaleLocalNuclearmilestonesNEET-306

  19. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy MotionshaleLocalNuclearmilestonesNEET-30607

  20. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy

  1. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy009 248.2 254.8 251.5 65.9 156.90 94.6 110.6

  2. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy009 248.2 254.8 251.5 65.9 156.90 94.6

  3. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy009 248.2 254.8 251.5 65.9 156.90 94.6367.9

  4. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy009 248.2 254.8 251.5 65.9 156.90 94.6367.9

  5. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy009 248.2 254.8 251.5 65.9 156.90

  6. NEHHOR14-15 Brent working_02252015.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment of Energy009 248.2 254.8 251.5 65.9 156.902014 348.2

  7. No Future For You: Italy Between Fictional Past And Postnational Future

    E-Print Network [OSTI]

    Rota, Emanuel

    2011-01-01

    either case, however, the future of Italy does not include aNo Future For You: Italy BetweenPast And Postnational Future Emanuel Rota Io non mi sento

  8. Envisioning Radical Futures -- New York City 2106: Back to the Future

    E-Print Network [OSTI]

    Yarinsky, Adam

    2008-01-01

    Above right: The City of the Future competition model, seenYork City 2106: Back to the Future Adam Yarinsky Our firm,Novem- ber 2006 “City of the Future” competition. The brief

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

    SciTech Connect (OSTI)

    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.

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

    SciTech Connect (OSTI)

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

    2014-01-01

    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.

  11. Geometrically controlled snapping transitions in shells with curved creases

    E-Print Network [OSTI]

    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.

  12. On the Nuclear Rotation Curve of M31

    E-Print Network [OSTI]

    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.

  13. Averaged null energy condition and quantum inequalities in curved spacetime

    E-Print Network [OSTI]

    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.

  14. Averaged null energy condition and quantum inequalities in curved spacetime

    E-Print Network [OSTI]

    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...

  15. Incorporation of learning curve costs in acquisition strategy optimization

    SciTech Connect (OSTI)

    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.

  16. Fields and fluids on curved non-relativistic spacetimes

    E-Print Network [OSTI]

    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].

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

    E-Print Network [OSTI]

    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...

  18. Linearly resummed hydrodynamics in a weakly curved spacetime

    E-Print Network [OSTI]

    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.

  19. Adsorption of annealed branched polymers on curved surfaces

    E-Print Network [OSTI]

    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...

  20. ArizonaArizona''s Electricity Future:s Electricity Future: The Demand for WaterThe Demand for Water

    E-Print Network [OSTI]

    Keller, Arturo A.

    ArizonaArizona''s Electricity Future:s Electricity Future: The Demand for WaterThe Demand for Water'' projected energy demandprojected energy demand 317 1,281 257 511 5,506 1,989 0 1,000 2,000 3,000 4,000 5

  1. Nepal's Future: In Whose Hands?

    E-Print Network [OSTI]

    International Crisis Group

    2009-08-13

    to compromise to keep a working relationship. But [General Katawal] refused to play along in similar style and instead became more and more provoca- tive. We had to take action or the spectre of the army flexing its political muscles over our and future... in the Maoist ranks but with short-sighted hubris. “Army chief ambushed”, ran the delighted front-page headline of the UCPN(M)’s mouth- piece. “Pradhansenapati dharapma”, Janadesh, 21 April 2009. Even as the plan started unravelling and the Maoists should...

  2. Physics Reach at Future Colliders

    SciTech Connect (OSTI)

    Krawczyk, Maria [Institute of Theoretical Physics, University of Warsaw, ul. Hoz-dota 69, 00-681 Warsaw (Poland); CERN, CH-1211 Geneva 23 (Switzerland)

    2007-11-27

    The physics reach at future colliders is discussed, with focus on the Higgs sector. First we present the Standard Model and some results obtained at the existing high-energy hadron collider, Tevatron, together with the corresponding expectations for the Large Hadron Collider (LHC), which starts operating in 2008. Then we discuss important low energy measurements: the anomalous magnetic moment for muon and the leptonic B-decay together with b{yields}s{gamma}. Finally the potential of the planned e{sup +}e{sup -} International Linear Collider (ILC) and its possible option Photon Linear Collider (PLC), e{gamma} and {gamma}{gamma}, is shortly presented.

  3. Water for future Mars astronauts?

    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 SolarAbout /Two0Photos and Videos/01/2012 Page 1WaterWater for future

  4. Section 25: Future State Assumptions

    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, High-ThroughputUpcomingmagnetoresistanceand Governmentm D m r e D m .8)&JD(N,8)Future

  5. The Future of Atomic Energy

    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.Week Day Year(active tab) 2016TheTheFuture is bright for

  6. The Future of Scientific Workflow

    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.Week Day Year(active tab) 2016TheTheFutureScientific Workflow

  7. THE FUTURE OF ENERGY Carlo Rubbia

    E-Print Network [OSTI]

    THE FUTURE OF ENERGY Carlo Rubbia ENEA Opening remarks at the 18th IAEA Fusion Energy Conference Sorrento, Italy, 4th October 2000 #12;2 TABLE OF CONTENT 1.-- Energy is necessary. ..................................................................................... 3 2.-- Energies for the future

  8. Market characteristics of future oil tanker operations

    E-Print Network [OSTI]

    Willemann, Simmy Dhawan

    2014-01-01

    This work analyzes the market characteristics of future oil tanker operations with a particular emphasis on those aspects which will have a potential impact on the design of future vessels. The market analysis model used ...

  9. Future Colliders Beyond the Standard Model

    E-Print Network [OSTI]

    Murayama, Hitoshi

    17 Future Colliders Beyond the Standard Model By the early 1980s there were persuasive arguments the default future of international high energy physics. The LHC project calls for two multipurpose detectors

  10. Noncommercial Trading in the Energy Futures Market

    Reports and Publications (EIA)

    1996-01-01

    How do futures markets affect spot market prices? This is one of the most pervasive questions surrounding futures markets, and it has been analyzed in numerous ways for many commodities.

  11. Winning the Biofuel Future | Department of Energy

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

    Winning the Biofuel Future Winning the Biofuel Future March 7, 2011 - 4:44pm Addthis Secretary Chu Secretary Chu Former Secretary of Energy Today, the Department announced that a...

  12. Reflections on our Past, Present, and Future

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

    Reflections on our Past, Present, and Future Reflections on our Past, Present, and Future Print Reflecting on 2014, I'd first point to our impressive science (see many highlights...

  13. Toward an energy surety future.

    SciTech Connect (OSTI)

    Tatro, Marjorie L.; Jones, Scott A.; Covan, John Morgan; Kuswa, Glenn W.; Menicucci, David F.; Robinett, Rush D. III

    2005-10-01

    Because of the inevitable depletion of fossil fuels and the corresponding release of carbon to the environment, the global energy future is complex. Some of the consequences may be politically and economically disruptive, and expensive to remedy. For the next several centuries, fuel requirements will increase with population, land use, and ecosystem degradation. Current or projected levels of aggregated energy resource use will not sustain civilization as we know it beyond a few more generations. At the same time, issues of energy security, reliability, sustainability, recoverability, and safety need attention. We supply a top-down, qualitative model--the surety model--to balance expenditures of limited resources to assure success while at the same time avoiding catastrophic failure. Looking at U.S. energy challenges from a surety perspective offers new insights on possible strategies for developing solutions to challenges. The energy surety model with its focus on the attributes of security and sustainability could be extrapolated into a global energy system using a more comprehensive energy surety model than that used here. In fact, the success of the energy surety strategy ultimately requires a more global perspective. We use a 200 year time frame for sustainability because extending farther into the future would almost certainly miss the advent and perfection of new technologies or changing needs of society.

  14. Coal: Energy for the future

    SciTech Connect (OSTI)

    1995-05-01

    This report was prepared in response to a request by the US Department of energy (DOE). The principal objectives of the study were to assess the current DOE coal program vis-a-vis the provisions of the Energy Policy Act of 1992 (EPACT), and to recommend the emphasis and priorities that DOE should consider in updating its strategic plan for coal. A strategic plan for research, development, demonstration, and commercialization (RDD and C) activities for coal should be based on assumptions regarding the future supply and price of competing energy sources, the demand for products manufactured from these sources, technological opportunities, and the need to control the environmental impact of waste streams. These factors change with time. Accordingly, the committee generated strategic planning scenarios for three time periods: near-term, 1995--2005; mid-term, 2006--2020; and, long-term, 2021--2040. The report is divided into the following chapters: executive summary; introduction and scope of the study; overview of US DOE programs and planning; trends and issues for future coal use; the strategic planning framework; coal preparation, coal liquid mixtures, and coal bed methane recovery; clean fuels and specialty products from coal; electric power generation; technology demonstration and commercialization; advanced research programs; conclusions and recommendations; appendices; and glossary. 174 refs.

  15. A Parameter Study of Type II Supernova Light Curves Using 6 M_odot He Cores

    E-Print Network [OSTI]

    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.

  16. The Future of Bioenergy Feedstock Production

    Office of Environmental Management (EM)

    2 Bioenergy Technologies Office background Feedstock assessment, production and logistics Biomass yield improvements Sustainable feedstock production Future...

  17. National Engineers Week: Future City Competition

    ScienceCinema (OSTI)

    None

    2012-06-14

    2011 Future Cities Competition inspires students all across South Carolina to pursue careers in environmental protection and engineering.

  18. European Strategy for Future Neutrino Physics

    ScienceCinema (OSTI)

    None

    2011-10-06

    A workshop to discuss the possibilities for future neutrino investigations in Europe and the links to CERN.

  19. The Future of Quark Matter at RHIC

    E-Print Network [OSTI]

    Barbara V. Jacak; Michael P. McCumber

    2007-03-20

    Projected annual results for heavy particle and high-p_{T} correlation studies at future RHICII luminosities.

  20. National Engineers Week: Future City Competition

    SciTech Connect (OSTI)

    None

    2011-01-01

    2011 Future Cities Competition inspires students all across South Carolina to pursue careers in environmental protection and engineering.

  1. ENERGY WHITE PAPER Our energy future -

    E-Print Network [OSTI]

    ENERGY WHITE PAPER Our energy future - creating a low carbon economy and consumers. And we stand up for fair and open markets in the UK, Europe and the world. #12;Our energy future ENERGY WHITE PAPER Our energy future - creating a low carbon economy 1 Foreword

  2. an educational alternative futures wildland planning game

    E-Print Network [OSTI]

    an educational alternative futures wildland planning game Edward C. Thor James L. Creighton PACIFIC. ACKNOWLEDGMENT The Mystic Mountain Game was initially developed for a workshop on alternative futures planning alternative futures wildland planning game. Gen. Tech. Rep. PSW-30, 8 p., illus. Pacific South- west Forest

  3. Goals and strategies for a sustainable future!

    E-Print Network [OSTI]

    Goals and strategies for a sustainable future! Department of Forest Resource Management SRH:s goals Editor: Sofia Hansson #12;With combined efforts we have now formulated our future goals and strategies, competence and what we want to accomplish in the future.Together we have a unique and genuine expertise

  4. FUTURE POWER GRID INITIATIVE Next Generation Network

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE Next Generation Network Simulations for Power System Applications resources. To operate the future power grids, these will need to take into account: » the integration (509) 372-6575 jason.fuller@pnnl.gov ABOUT FPGI The Future Power Grid Initiative (FPGI) will deliver

  5. Future Regional Climates Jason Evans,a

    E-Print Network [OSTI]

    Evans, Jason

    Chapter 9 Future Regional Climates Jason Evans,a John McGregorb , and Kendal McGuffiec a Climate of Dynamical Downscaling 235 9.3.1.6. Future Development in Dynamical Downscaling 235 9.3.2. Statistical' Future Climate and Its Probability 242 9.5. Achieving Regional Climate Predictions 243 9.5.1. Water

  6. FUTURE POWER GRID INITIATIVE GridOPTICSTM

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE GridOPTICSTM : A Software Framework for Power System Operations technologies needed to support the operations and planning of the future power grid » provide a framework to the GridPACK numerical library that is being developed in the Future Power Grid Initiative APPROACH

  7. Celebrating Our Achievements... Building Our Future

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Celebrating Our Achievements... Building Our Future UC SANTA CRUZUC SANTA CRUZ University for the visual arts 9 A library for the future 10 Ali Akbar Khan honored 12 Protecting marine mammals 13 New­2000 and presents a wide range of opportunities to invest in the future of the campus. The campus has won national

  8. CREATING AND CELEBRATING OUR WATERSHED'S FUTURE

    E-Print Network [OSTI]

    #12;CREATING AND CELEBRATING OUR WATERSHED'S FUTURE SELECTING INDICATORS FOR A SUSTAINABLE WATERSHED FUTURE March 1 - 2,1997 Falkland, B.C. Workshop Report Prepared For: Objectives Section.M. and MacDonald, D.D. 1997. Creating and Celebrating Our Watershed's Future- Selecting Indicators

  9. Back to the Future: Japan's NII Plans

    E-Print Network [OSTI]

    West, Joel; Dedrick, Jason; Kraemer, Kenneth L.

    1996-01-01

    Back to the Future: Japan’s NII Plans, June 5, 1996 Page 34Back to the Future: Japan’s NII Plans, June 5, 1996 Page 30Back to the Future: Japan’s NII Plans, June 5, 1996 Page 32

  10. Alternative Futures for Particle Physics Michael Dine

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Alternative Futures for Particle Physics Michael Dine Department of Physics University of California, Santa Cruz Neve Shalom, October, 2013 Michael Dine Alternative Futures for Particle Physics #12;A for the elementary particle masses. Michael Dine Alternative Futures for Particle Physics #12;Higgs Discovery; LHC

  11. California Energy Futures Study Working Committee

    E-Print Network [OSTI]

    California at Davis, University of

    #12;#12;#12;California Energy Futures Study Working Committee Robert Budnitz, LBNL Linda Cohen, UC Somerville, UC Berkeley H. Youngs ­ EBI, UC Berkeley California's Energy Future, Biofuels #12;Stress tests California's Energy Future, Biofuels #12;#12;#12;Reduced Fuel Demand Scenario H. Youngs ­ EBI, UC Berkeley

  12. The Shape of M Dwarf Flares in Kepler Light Curves

    E-Print Network [OSTI]

    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.

  13. Fractal Diffusion in Smooth Dynamical Systems with Virtual Invariant Curves

    E-Print Network [OSTI]

    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.

  14. Fields and fluids on curved non-relativistic spacetimes

    E-Print Network [OSTI]

    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...

  15. Static spherically symmetric solutions in mimetic gravity: rotation curves & wormholes

    E-Print Network [OSTI]

    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.

  16. Curved track segment finding using Tiny Triplet Finder (TTF)

    SciTech Connect (OSTI)

    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.

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

    E-Print Network [OSTI]

    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.

  18. Spinless Aharonov-Bohm problem in curved space

    E-Print Network [OSTI]

    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.

  19. Renewable Electricity Futures Study. Executive Summary

    SciTech Connect (OSTI)

    Mai, T.; Sandor, D.; Wiser, R.; Schneider, T.

    2012-12-01

    The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. renewable resources to meet electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of renewables in the future. RE Futures focused on technical aspects of high penetration of renewable electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of renewable electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of renewable electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to renewable electricity development, and future electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).

  20. While future changes in emission are the largest uncertainty on future climate change, another

    E-Print Network [OSTI]

    Allan, Richard P.

    While future changes in emission are the largest uncertainty on future climate change, another. Above, the thick lines show different possible future scenarios (Representative Concentration Pathways) ranging from low emission (RCP2.6) up to high emission (RCP 8.5) which explain a large range in future

  1. Electric Energy Challenges of the Future Future Grid Thrust Area 1 White Paper

    E-Print Network [OSTI]

    Electric Energy Challenges of the Future Future Grid Thrust Area 1 White Paper Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;Thrust Area 1 White Paper Electric Energy Challenges of the Future Project Team Gerald T. Heydt, Kory Hedman Arizona

  2. An evaluation of alternative horizontal curve design approaches for rural two-lane highways 

    E-Print Network [OSTI]

    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...

  3. California’s Energy Future: Transportation Energy Use in California

    E-Print Network [OSTI]

    Yang, Christopher; Ogden, Joan M; Hwang, Roland; Sperling, Daniel

    2011-01-01

    Evidence California’s Energy Future - Transportation Energymarine. California’s Energy Future - Transportation EnergyCCST 2011a. California’s Energy Future - The View to 2050,

  4. The Future is Here - Smart Home Technology | Department of Energy

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

    The Future is Here - Smart Home Technology The Future is Here - Smart Home Technology Better Buildings Residential Network Peer Exchange Call Series: The Future is Here - Smart...

  5. Salto Mortale: Narrative, Speculation, and the Chance of the Future

    E-Print Network [OSTI]

    McClanahan, Annie J.

    2010-01-01

    nkdefault Reinhart Kosselek, Futures Past: On the SemanticsImplications of Possible Futures for Possible Pasts,”In the Ruins of the Future,” Harpers Magazine (December,

  6. Autonomous Ground Vehicle Path Planning for Autocross Tracks: Optimal vs an Efficient Bézier Curve Path

    E-Print Network [OSTI]

    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

  7. 5d $E_n$ Seiberg-Witten curve via toric-like diagram

    E-Print Network [OSTI]

    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.

  8. ON THE INERTIA GROUP OF ELLIPTIC CURVES IN THE CREMONA GROUP OF THE PLANE

    E-Print Network [OSTI]

    Blanc, Jérémy

    -Be], [dFe], [BeB], and [Bla]). In the case where K = C, the inertia groups of curves of geometric genus 2

  9. A Tunable Hemispherical Platform for Non-Stretching Curved Flexible Electronics and Optoelectronics

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    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:

  11. The house of the future

    ScienceCinema (OSTI)

    None

    2010-09-01

    Learn what it will take to create tomorrow's net-zero energy home as scientists reveal the secrets of cool roofs, smart windows, and computer-driven energy control systems. The net-zero energy home: Scientists are working to make tomorrow's homes more than just energy efficient -- they want them to be zero energy. Iain Walker, a scientist in the Lab's Energy Performance of Buildings Group, will discuss what it takes to develop net-zero energy houses that generate as much energy as they use through highly aggressive energy efficiency and on-site renewable energy generation. Talking back to the grid: Imagine programming your house to use less energy if the electricity grid is full or price are high. Mary Ann Piette, deputy director of Berkeley Lab's building technology department and director of the Lab's Demand Response Research Center, will discuss how new technologies are enabling buildings to listen to the grid and automatically change their thermostat settings or lighting loads, among other demands, in response to fluctuating electricity prices. The networked (and energy efficient) house: In the future, your home's lights, climate control devices, computers, windows, and appliances could be controlled via a sophisticated digital network. If it's plugged in, it'll be connected. Bruce Nordman, an energy scientist in Berkeley Lab's Energy End-Use Forecasting group, will discuss how he and other scientists are working to ensure these networks help homeowners save energy.

  12. Future Perfect Partnering with Portuguese Environmental Protection...

    Open Energy Info (EERE)

    with Portuguese Environmental Protection Agency (EPA). Aviation Sector EU Emissions Trading Scheme Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Future Perfect...

  13. Brain Receptor Structures Key to Future Therapeutics

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

    Brain Receptor Structures Key to Future Therapeutics Print With an aging population in America, it is more important than ever to discover ways to treat or prevent diseases...

  14. Transportation Energy Futures: Combining Strategies for Deep...

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

    ENERGY FUTURES Combining Strategies for Deep Reductions in Energy Consumption and GHG Emissions Significant Energy Consumption - and Opportunities for Reduction Transportation is...

  15. Neutrinoless Double Beta Decay: Present and Future

    E-Print Network [OSTI]

    Oliviero Cremonesi

    2002-10-04

    Present status, and future plans for Double Beta Decay searches are reviewed. Given the recent observations of neutrino oscillations, a possibility to observe $\\beta\\beta(0\

  16. Transportation Energy Futures Series: Projected Biomass Utilization...

    Office of Scientific and Technical Information (OSTI)

    Transportation Energy Futures Series: Projected Biomass Utilization for Fuels and Power in a Mature Market Ruth, M.; Mai, T.; Newes, E.; Aden, A.; Warner, E.; Uriarte, C.; Inman,...

  17. Graphene Supercapacitors: Charging Up the Future

    E-Print Network [OSTI]

    El-Kady, Maher

    2013-01-01

    for ultracapacitors. Energy & Environmental Science 3, 1294-electrolytes. Energy & Environmental Science 4, 4152-4259 (future”, Energy & Environmental Science (Invited Review), in

  18. Forming the Future | Department of Energy

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

    Future This feature article from the April 2014 edition of the Fabricating and Forming Journal (FFJournal) describes how Ford Motor Co.'s sheet metal freeforming technology...

  19. CP-1: The Past, Present, and Future

    SciTech Connect (OSTI)

    Dr. Alan Schriesheim; Dr. Mark Peters; Dr. Robert Rosner

    2013-01-28

    Lecture presented by C2ST and Argonne National Laboratory on CP1 and the current and future state of nuclear energy.

  20. Consumer Electronics and Buildings: Future Interoperability?

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

    Consumer Electronics and Buildings: Future Interoperability?? Alan Messer, Ph.D. Vice PresidentHead of Advanced SW Technology Samsung Electronics - Silicon Valley IoT's Ecosystem...

  1. A Table of Areas Under Disease Progress Curves

    E-Print Network [OSTI]

    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...

  2. THE TRANSIT LIGHT CURVE OF AN EXOZODIACAL DUST CLOUD

    SciTech Connect (OSTI)

    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.

  3. Simultaneous emergence of curved spacetime and quantum mechanics

    E-Print Network [OSTI]

    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.

  4. A Superstring Theory in Four Curved Space-Time Dimensions

    E-Print Network [OSTI]

    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.

  5. Photovoltaics: Helping Power Our Clean Energy Future

    E-Print Network [OSTI]

    Firestone, Jeremy

    % #12;TECHNOLOGY DEVELOPMENT 6 #12;Solar Price Learning Curve 7 Solar Panel Cost Drops by 19% with Each: 50% by 2012 10 $/Watt 2006 Downstream Panel Cell Silicon Efficiency 2012 25% 5 % 5 % 10% 15% Target solar cell 2005 2006 2007 2008 CellEfficiency(%) 20042003 20% 21% 22% 23% 24% 25% 20.6% 22.0% 23.4% 20

  6. Renewable Electricity Futures Study. Volume 1. Exploration of High-Penetration Renewable Electricity Futures

    SciTech Connect (OSTI)

    Hand, M. M.; Baldwin, S.; DeMeo, E.; Reilly, J. M.; Mai, T.; Arent, D.; Porro, G.; Meshek, M.; Sandor, D.

    2012-06-15

    The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. renewable resources to meet electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of renewables in the future. RE Futures focused on technical aspects of high penetration of renewable electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of renewable electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of renewable electricity penetration levels (30%–90%), future technology performance improvements, potential constraints to renewable electricity development, and future electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT). Learn more at the RE Futures website. http://www.nrel.gov/analysis/re_futures/

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

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

    E-Print Network [OSTI]

    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.

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

    E-Print Network [OSTI]

    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.

  11. Fig. 1. Variation of the slope post-peak stress-strain curve with confining pressure.

    E-Print Network [OSTI]

    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

  12. Analysis of Industrial Microgrid Power Curves Based on the Theory of Stochastic Variables for

    E-Print Network [OSTI]

    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

  13. A hidden process regression model for functional data description. Application to curve discrimination

    E-Print Network [OSTI]

    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

  14. CS264: Beyond Worst-Case Analysis Lecture #14: Smoothed Analysis of Pareto Curves

    E-Print Network [OSTI]

    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

  15. On the Static Diffie-Hellman Problem on Elliptic Curves over Extension Fields

    E-Print Network [OSTI]

    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

  16. Curved EFC/F-BAR-Domain Dimers Are Joined End to End into a Filament for

    E-Print Network [OSTI]

    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

  17. Twisted Jacobi Intersections Curves Rongquan Feng 1 , Menglong Nie 1 , Hongfeng Wu 2

    E-Print Network [OSTI]

    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

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

    E-Print Network [OSTI]

    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

  19. A Probabilistic Graphical Approach to Computing Electricity Price Duration Curves under Price and

    E-Print Network [OSTI]

    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

  20. 0960-3174 #1997 Chapman & Hall On the shrinkage of local linear curve

    E-Print Network [OSTI]

    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

  1. Measuring PV System Series Resistance Without Full IV Curves Joshua S. Stein1

    E-Print Network [OSTI]

    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

  2. The past and future of greenhouse gas offset projects

    SciTech Connect (OSTI)

    Trexler, M.C.; Kosloff, L.H. [Trexler and Associates, Inc., Portland, OR (United States)

    1997-12-31

    Researchers now have almost 10 years of experience with on-the-ground carbon offset projects for climate change mitigation purposes. The field is evolving from one driven primarily by public and governmental relations, to one driven by companies` perceived need to adapt to anticipated national and international regulation of greenhouse gas emissions. Offset project participants are seeking to identify offset opportunities, come up the regulatory and technical learning curves, and identify new market opportunities. Offset projects being implemented today can be evaluated through several lenses including offset performance and benefit quantification, cost-effectiveness, and political and environmental acceptability. Careful evaluation of existing offset experience is important in order to guide national and international policy development. This paper will review the history and trends of offset project development, use existing experience to identify advantages and disadvantages associated with different offsets, and identify lessons that can guide future project development. The lead author carried out the CO{sub 2} benefit analysis for the first offset project (AES Corp.`s CARE Guatemala reforestation project), and has developed and evaluated dozens of domestic and international offset projects and proposals. The authors` company is currently implementing more than a half-dozen offset projects and they are intimately involved in ongoing technical and policy development of the field.

  3. Planning For a New Energy & Climate Future

    E-Print Network [OSTI]

    New South Wales, University of

    Planning For a New Energy & Climate Future 10th International Urban Planning and Environment solar energy resources ­ Can an analysis of urban residential rooftops inform planning policy for carbonNicoleGurran,PeterPhibbsandSusanThompson www.upe10.org Page 1 #12;Planning For a New Energy & Climate Future FIRST PUBLISHED 2013 by ICMS PTY

  4. A Once and Future Gulf of Mexico

    E-Print Network [OSTI]

    Osenberg, Craig W.

    A Once and Future Gulf of Mexico Ecosystem Restoration Recommendations of an Expert Working Group, Stanley Senner, John M. Teal and Ping Wang #12;1 A Once and Future Gulf of Mexico Ecosystem, Executive deep-sea and shoreline habitats and closing economically valuable fisheries in the Gulf of Mexico

  5. A Once and Future Gulf of Mexico

    E-Print Network [OSTI]

    Osenberg, Craig W.

    A Once and Future Gulf of Mexico Ecosystem Restoration Recommendations of an Expert Working Group of Mexico Ecosystem: Restoration Recommendations of an Expert Working Group. Pew Environment Group. Washington, DC. 112 pp. #12;A Once and Future Gulf of Mexico Ecosystem Restoration Recommendations

  6. Future Prospects for Nuclear Power after Fukushima

    E-Print Network [OSTI]

    Goldberg, Bennett

    Future Prospects for Nuclear Power after Fukushima Nuclear is a highintensity energy source at the FukushimaDaiichi nuclear power plant in Japan has changed the perception of nuclear as a safe energy source as the next generation of Light Water Reactors. We will also discuss the future prospects of nuclear power

  7. Alternative Futures for Particle Physics Michael Dine

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Alternative Futures for Particle Physics Michael Dine Department of Physics University Alternative Futures for Particle Physics #12;A tension between naturalness and simplicity The decades prior unobserved) degrees of freedom which can account for the elementary particle masses. Michael Dine Alternative

  8. Alternative Futures for Particle Physics Michael Dine

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Alternative Futures for Particle Physics Michael Dine Department of Physics University of California, Santa Cruz Higgs and Beyond, Sendai, JAPAN June, 2013 Michael Dine Alternative Futures understanding of QCD is exquisite as is our understanding of the electroweak theory. Michael Dine Alternative

  9. for the Future The Case for

    E-Print Network [OSTI]

    O'Brien, James F.

    Building for the Future The Case for Green Buildings and Energy Security for the University a contract from the Greenpeace Clean Energy Now! campaign. Building for the Future: The Case for Green and growing demand for renewable energy, energy efficiency, and green building practices from a wide range

  10. Webinar: Buildings of the Future: The Role of Nature in our Future Built Environment

    Broader source: Energy.gov [DOE]

    The first spring Buildings of the Future webinar will be on Wednesday, March, 18 - The Role of Nature in our Future Built Environment.In the webinar, the DOE and PNNL project team will host a...

  11. Thermal stability of curved ray tomography for corrosion monitoring

    SciTech Connect (OSTI)

    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.

  12. Quantum Inequality Restrictions on Negative Energy Densities in Curved Spacetimes

    E-Print Network [OSTI]

    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.

  13. The motion of point particles in curved spacetime

    E-Print Network [OSTI]

    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).

  14. The motion of point particles in curved spacetime

    E-Print Network [OSTI]

    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.

  15. Phase structure and critical processes of spectral curves in large N dualities

    E-Print Network [OSTI]

    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.

  16. Renewable Electricity Futures Study Executive Summary

    Broader source: Energy.gov [DOE]

    The Renewable Electricity Futures Study (RE Futures) provides an analysis of the grid integration opportunities, challenges, and implications of high levels of renewable electricity generation for the U.S. electric system. The study is not a market or policy assessment. Rather, RE Futures examines renewable energy resources and many technical issues related to the operability of the U.S. electricity grid, and provides initial answers to important questions about the integration of high penetrations of renewable electricity technologies from a national perspective. RE Futures results indicate that a future U.S. electricity system that is largely powered by renewable sources is possible and that further work is warranted to investigate this clean generation pathway.

  17. Renewable Electricity Futures for the United States

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Renewable Electricity Futures Study (RE Futures) provides an analysis of the grid integration opportunities, challenges, and implications of high levels of renewable electricity generation for the U.S. electric system. The study is not a market or policy assessment. Rather, RE Futures examines renewable energy resources and many technical issues related to the operability of the U.S. electricity grid, and provides initial answers to important questions about the integration of high penetrations of renewable electricity technologies from a national perspective. RE Futures results indicate that a future U.S. electricity system that is largely powered by renewable sources is possible and that further work is warranted to investigate this clean generation pathway.

  18. National Renewable Energy Laboratory Innovation for Our Energy Future NREL's Campus of the Future

    E-Print Network [OSTI]

    National Renewable Energy Laboratory Innovation for Our Energy Future NREL's Campus of the Future nation but the world #12;National Renewable Energy Laboratory Innovation for Our Energy Future Campus facilities · Carbon neutral · Net zero energy · Living Laboratory #12;National Renewable Energy Laboratory

  19. Renewable Electricity Futures Study. Volume 1: Exploration of High-Penetration Renewable Electricity Futures

    SciTech Connect (OSTI)

    Mai, T.; Wiser, R.; Sandor, D.; Brinkman, G.; Heath, G.; Denholm, P.; Hostick, D.J.; Darghouth, N.; Schlosser, A.; Strzepek, K.

    2012-06-01

    The Renewable Electricity Futures (RE Futures) Study investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. The analysis focused on the sufficiency of the geographically diverse U.S. renewable resources to meet electricity demand over future decades, the hourly operational characteristics of the U.S. grid with high levels of variable wind and solar generation, and the potential implications of deploying high levels of renewables in the future. RE Futures focused on technical aspects of high penetration of renewable electricity; it did not focus on how to achieve such a future through policy or other measures. Given the inherent uncertainties involved with analyzing alternative long-term energy futures as well as the multiple pathways that might be taken to achieve higher levels of renewable electricity supply, RE Futures explored a range of scenarios to investigate and compare the impacts of renewable electricity penetration levels (30%-90%), future technology performance improvements, potential constraints to renewable electricity development, and future electricity demand growth assumptions. RE Futures was led by the National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT).

  20. 'Self-absorbed' GeV light curves of gamma-ray burst afterglows

    SciTech Connect (OSTI)

    Panaitescu, A.; Vestrand, W. T.; Wo?niak, P. [Space and Remote Sensing, MS B244, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2014-06-10

    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.

  1. A new approach for magnetic curves in 3D Riemannian manifolds

    SciTech Connect (OSTI)

    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.

  2. 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.

  3. Building Blocks for the Future of Manufacturing

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

    on Tumblr (Opens in new window) Building Blocks for the Future of Manufacturing Scott Smith 2011.05.04 An error occurred. Try watching this video on www.youtube.com, or enable...

  4. Addressing an Uncertain Future Using Scenario Analysis

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Marnay, Chris

    2008-01-01

    a scenario may be an oil price hike in a future year, whichon the impact of high oil prices on the global economy (seethe scenario of a high oil price (of US$35/barrel, which is

  5. Strategic Plan Focus on the Future

    E-Print Network [OSTI]

    Boynton, Walter R.

    Strategic Plan Focus on the Future November 2012 is the strategic plan for the University of Maryland Center for Environmental Science (UMCES and course adjustments of the Strategic Directions chosen in the last plan, From

  6. Factors shaping the future of Cloud Computing

    E-Print Network [OSTI]

    Francis, Steven (Steven Douglas)

    2011-01-01

    Many different forces are currently shaping the future of the Cloud Computing Market. End user demand and end user investment in existing technology are important drivers. Vendor innovation and competitive strategy are ...

  7. Future characteristics of Offshore Support Vessels

    E-Print Network [OSTI]

    Rose, Robin Sebastian Koske

    2011-01-01

    The objective of this thesis is to examine trends in Offshore Support Vessel (OSV) design and determine the future characteristics of OSVs based on industry insight and supply chain models. Specifically, this thesis focuses ...

  8. What future does the universe have?

    E-Print Network [OSTI]

    B. Hoeneisen

    2002-10-23

    We discuss the future evolution of the universe in the light of recent observations. The apparent luminosity vs. redshift of supernovae favor an accelerating universe. However an Einstein-de Sitter critical universe should not be ruled out yet.

  9. Big data and the future of ecology

    E-Print Network [OSTI]

    2013-01-01

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

  10. Gluons in our future | Jefferson Lab

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

    Gluons in our future July 30, 2014 If one were to eavesdrop on the conversations that we have with our visitors - students of all kinds, politicians or the general public - one...

  11. Programmable Cellular Logic: Past, Present, and Future

    E-Print Network [OSTI]

    Tessier, Russell

    Programmable Cellular Logic: Past, Present, and Future Russell Tessier \\Lambda Laboratory changes in technology and architectural trends as they pertain to cellular arrays since the 1960's. Direct comparisons of various cellular array architectural features with contemporary programmable logic features

  12. Price distortions in the commodity futures markets

    E-Print Network [OSTI]

    Helfrich, Devin B

    2012-01-01

    Speculation is not monolithic; it comes in many forms. A certain level of speculation is required for commodity futures markets to function. On the other hand, certain types of trading activities by speculators may damage ...

  13. Biomass 2014: Growing the Future Bioeconomy

    Office of Energy Efficiency and Renewable Energy (EERE)

    Register for Biomass 2014 today and don’t miss your chance to take part in this important event that will help move the nation to a more secure, sustainable, and economically sound future.

  14. Fueling the Future with Fungal Genomics

    E-Print Network [OSTI]

    Grigoriev, Igor V.

    2011-01-01

    yeast for improved biofuel production. Science. 330:84-86.current and future biofuel production processes. From crop/platforms for biomass-to-biofuel production on an industrial

  15. Primer on electricity futures and other derivatives

    SciTech Connect (OSTI)

    Stoft, S.; Belden, T.; Goldman, C.; Pickle, S.

    1998-01-01

    Increased competition in bulk power and retail electricity markets is likely to lower electricity prices, but will also result in greater price volatility as the industry moves away from administratively determined, cost-based rates and encourages market-driven prices. Price volatility introduces new risks for generators, consumers, and marketers. Electricity futures and other derivatives can help each of these market participants manage, or hedge, price risks in a competitive electricity market. Futures contracts are legally binding and negotiable contracts that call for the future delivery of a commodity. In most cases, physical delivery does not take place, and the futures contract is closed by buying or selling a futures contract on or near the delivery date. Other electric rate derivatives include options, price swaps, basis swaps, and forward contracts. This report is intended as a primer for public utility commissioners and their staff on futures and other financial instruments used to manage price risks. The report also explores some of the difficult choices facing regulators as they attempt to develop policies in this area.

  16. Interplay of oxygen-evolution kinetics and photovoltaic power curves on the construction of artificial leaves

    E-Print Network [OSTI]

    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 ...

  17. On secondary loops in LAOS via self-intersection of Lissajous–Bowditch curves

    E-Print Network [OSTI]

    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. ...

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

    E-Print Network [OSTI]

    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.

  19. MEASUREMENT OF THE SHOCK-HEATED MELT CURVE OF LEAD USING PYROMETRY AND REFLECTOMETRY

    SciTech Connect (OSTI)

    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.

  20. Hypergeometric functions over finite fields and their relations to algebraic curves

    E-Print Network [OSTI]

    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 ...

  1. Nonlinearities and Adaptation of Color Vision from Sequential Principal Curves Analysis

    E-Print Network [OSTI]

    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

  2. Driver mental workload requirements on horizontal curves based on occluded vision test measurements 

    E-Print Network [OSTI]

    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 ...

  3. Aperture Photometry and Transit Light Curve Analysis D. Cohen and E. Jensen

    E-Print Network [OSTI]

    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

  4. Generating Light Curves from Forced PSF-fit Photometry on PTFIDE Difference-images

    E-Print Network [OSTI]

    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

  5. Analysis of post-Kyoto CO? emissions trading using marginal abatement curves

    E-Print Network [OSTI]

    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 ...

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

    E-Print Network [OSTI]

    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 ...

  7. QUIZ 2 (IN 10 MINUTES.) (1) Find the equation of integral curves of ...

    E-Print Network [OSTI]

    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 ...

  8. Studying atmosphere-dominated hot Jupiter Kepler phase curves: Evidence that inhomogeneous atmospheric reflection is common

    E-Print Network [OSTI]

    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...

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

    E-Print Network [OSTI]

    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

  10. Measuring Type Ia Supernova Distances and Redshifts From Their Multi-band Light Curves

    E-Print Network [OSTI]

    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

  11. Gamma-ray burst prompt emission light curves and power density spectra in the ICMART model

    SciTech Connect (OSTI)

    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.

  12. Power Angle & Time Domain Plots 1.0 The powerangle curves

    E-Print Network [OSTI]

    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

  13. Hypergeometric functions over finite fields and relations to modular forms and elliptic curves 

    E-Print Network [OSTI]

    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 ...

  14. Spontaneously curving trajectory in Brownian motion of particle with broken symmetry

    E-Print Network [OSTI]

    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.

  15. Intersection theory on the moduli space of holomorphic curves with Lagrangian boundary conditions

    E-Print Network [OSTI]

    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 ...

  16. Is a curved flight path in SAR better than a straight one?

    E-Print Network [OSTI]

    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.,.

  17. Type curve analysis for naturally fractured reservoirs (infinite-acting reservoir case): a new approach 

    E-Print Network [OSTI]

    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...

  18. Precise orientation of single crystals by a simple x-ray diffraction rocking curve method

    SciTech Connect (OSTI)

    Doucette, L.D.; Pereira da Cunha, M.; Lad, R.J.

    2005-03-01

    A simple method has been developed for accurately measuring the crystallographic orientation of a single crystal boule, employing a conventional four-circle x-ray diffraction arrangement in the rocking curve mode which relaxes the need for precise instrument and/or reference alignment. By acquiring a total of eight rocking curve measurements at specific orientations about the specimen azimuth, the absolute miscut angle between a crystal surface and the desired crystallographic plane can be resolved to within {+-}0.01 deg.

  19. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01

    Railroads”, Conference on the Future of Coal, U.S. SenateFuture Impacts of Coal Distribution Constraints on Coal Costone at that! -ii- Future Impacts of Coal Distribution

  20. FutureGen Industrial Alliance Announces Carbon Storage Site Selection...

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

    FutureGen Industrial Alliance Announces Carbon Storage Site Selection Process for FutureGen 2.0 FutureGen Industrial Alliance Announces Carbon Storage Site Selection Process for...