ADS: The Next Generation Search Platform
Accomazzi, Alberto; Henneken, Edwin A; Chyla, Roman; Luker, James; Grant, Carolyn S; Thompson, Donna M; Holachek, Alexandra; Dave, Rahul; Murray, Stephen S
2015-01-01T23:59:59.000Z
Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds itself in the middle of major changes to the infrastructure and contents of its database. In this paper we highlight a number of features of great importance to librarians and discuss the additional functionality that we are currently developing. Starting in 2011, the ADS started to systematically collect, parse and index full-text documents for all the major publications in Physics and Astronomy as well as many smaller Astronomy journals and arXiv e-prints, for a total of over 3.5 million papers. Our citation coverage has doubled since 2010 and now consists of over 70 million citations. We are normalizing the affiliation information in our records and, in collaboration with the CfA library and NASA, we have started collecting and linking funding sources with papers in our system. At the same time, we are undergoing major technology changes in the ADS platform which affect all aspects of the system and its operations. We hav...
Hydropower Upgrades to Yield Added Generation at Average Costs...
Broader source: Energy.gov (indexed) [DOE]
selections announced today will deploy innovative technologies such as high-efficiency, fish-friendly turbines, improved water intakes, and advanced control systems in order to...
High-Yield D-T Neutron Generator
Ludewigt, B.A.; Wells, R.P.; Reijonen, J.
2006-11-15T23:59:59.000Z
A high-yield D-T neutron generator has been developed for neutron interrogation in homeland security applications such as cargo screening. The generator has been designed as a sealed tube with a performance goal of producing 5 {center_dot} 10{sup 11} n/s over a long lifetime. The key generator components developed are a radio-frequency (RF) driven ion source and a beam-loaded neutron production target that can handle a beam power of 10 kW. The ion source can provide a 100 mA D{sup +}/T{sup +} beam current with a high fraction of atomic species and can be pulsed up to frequencies of several kHz for pulsed neutron generator operation. Testing in D-D operation has been started.
Modern yields per stellar generation: the effect of the IMF
Vincenzo, Fiorenzo; Belfiore, Francesco; Maiolino, Roberto
2015-01-01T23:59:59.000Z
Gaseous and stellar metallicities in galaxies are nowadays routinely used to constrain the evolutionary processes in galaxies. This requires the knowledge of the average yield per stellar generation, $y_{\\text{Z}}$, i.e. the quantity of metals that a stellar population releases into the interstellar medium (ISM), which is generally assumed to be a fixed fiducial value. Deviations of the observed metallicity from the expected value of $y_{\\text{Z}}$ are used to quantify the effect of outflows or inflows of gas, or even as evidence for biased metallicity calibrations or inaccurate metallicity diagnostics. Here we show that $\\rm y_{\\text{Z}}$ depends significantly on the Initial Mass Function (IMF), varying by up to a factor larger than three, for the range of IMFs typically adopted in various studies. This, along with the variation of the gas mass fraction restored into the ISM by supernovae ($R$, which also depends on the IMF), may yield to deceiving results, if not properly taken into account. In particular, ...
A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator
Waldmann, Ole
2011-01-01T23:59:59.000Z
permanent-magnet microwave ion source for the high-yield neutron generator.Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron GeneratorPermanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator ?
Effect of adding nitrogen on the yield of hydrogen cyanide in oxidative ammonolysis of methane
Grin, G.I.; Trusov, N.V.; Dmitriev, N.M.
1994-02-20T23:59:59.000Z
On the basis of an empirical model of the process of oxidative ammonolysis of methane, a study was made of the effect of adding nitrogen to the initial methane-ammonia-air mixture. In the general case, the N{sub 2} introduction was shown to decrease the autothermal temperature of the synthesis, though at small flows of the initial mixture some increase in t{sub conv} is possible. An explanation of this phenomenon was proposed.
A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator
A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator O. Waldmanna We present recent work on the development of a microwave ion source that will be used in a high transportable. We constructed a microwave ion source (2.45 GHz) with permanent magnets to provide the magnetic
Hydropower Upgrades to Yield Added Generation at Average Costs Less Than 4
Office of Environmental Management (EM)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports to3,1,50022,3,,0,,6,1,Separation 23 362 334Department ofEnergy FY 2014GinaFuel ShortagesClean Coal Â» Coal to
Large rotating AdS black holes from fluid mechanics
Sayantani Bhattacharyya; Subhaneil Lahiri; R. Loganayagam; Shiraz Minwalla
2008-07-25T23:59:59.000Z
We use the AdS/CFT correspondence to argue that large rotating black holes in global AdS(D) spaces are dual to stationary solutions of the relativistic Navier-Stokes equations on S**(D-2). Reading off the equation of state of this fluid from the thermodynamics of non-rotating black holes, we proceed to construct the nonlinear spinning solutions of fluid mechanics that are dual to rotating black holes. In all known examples, the thermodynamics and the local stress tensor of our solutions are in precise agreement with the thermodynamics and boundary stress tensor of the spinning black holes. Our fluid dynamical description applies to large non-extremal black holes as well as a class of large non-supersymmetric extremal black holes, but is never valid for supersymmetric black holes. Our results yield predictions for the thermodynamics of all large black holes in all theories of gravity on AdS spaces, for example, string theory on AdS(5) x S**5 and M theory on AdS(4) x S**7 and AdS(7) x S**4.
Emergent Space and the Example of AdS_5XS^5
Frank Ferrari
2013-05-06T23:59:59.000Z
We explain how to build field theoretic observables from which the geometrical properties of a dual holographic formulation can be read off straightforwardly. In some cases this construction yields explicit and calculable models of emergent space. We illustrate the idea on the type IIB background generated by N D3-branes in the near horizon limit, for which a full derivation from first principles can be presented. The six transverse dimensions emerge at large N and we find the full AdS_5XS^5 metric and self-dual Ramond-Ramond field strength on the resulting ten dimensional space-time, with the correct radii and quantization law. We briefly discuss possible applications and generalizations.
Paul, Sabyasachi; Sahoo, G. S.; Tripathy, S. P., E-mail: sam.tripathy@gmail.com, E-mail: tripathy@barc.gov.in; Sunil, C.; Bandyopadhyay, T. [Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Sharma, S. C.; Ramjilal,; Ninawe, N. G.; Gupta, A. K. [Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)
2014-06-15T23:59:59.000Z
A systematic study on the measurement of neutron spectra emitted from the interaction of protons of various energies with a thick beryllium target has been carried out. The measurements were carried out in the forward direction (at 0° with respect to the direction of protons) using CR-39 detectors. The doses were estimated using the in-house image analyzing program autoTRAK-n, which works on the principle of luminosity variation in and around the track boundaries. A total of six different proton energies starting from 4 MeV to 24 MeV with an energy gap of 4 MeV were chosen for the study of the neutron yields and the estimation of doses. Nearly, 92% of the recoil tracks developed after chemical etching were circular in nature, but the size distributions of the recoil tracks were not found to be linearly dependent on the projectile energy. The neutron yield and dose values were found to be increasing linearly with increasing projectile energies. The response of CR-39 detector was also investigated at different beam currents at two different proton energies. A linear increase of neutron yield with beam current was observed.
A reassessment of equivalence in yield from marine reserves and traditional fisheries management
White, Crow; Kendall, Bruce E.
2007-01-01T23:59:59.000Z
and Botsford, L. W. 1999. Equivalence in yield from marineJune 2007 A reassessment of equivalence in yield from marineidentical model generates equivalence in yield between the
Blumenthal, Jurg M.; Thompson, Wayne
2009-06-12T23:59:59.000Z
This publication explains how to estimate the grain yield of a corn crop before harvest. An interactive grain yield calculator is included. 6 pages, 3 tables, 1 figure....
Light-cone AdS/CFT-adapted approach to AdS fields/currents, shadows, and conformal fields
R. R. Metsaev
2015-07-23T23:59:59.000Z
Light-cone gauge formulation of fields in AdS space and conformal field theory in flat space adapted for the study of AdS/CFT correspondence is developed. Arbitrary spin mixed-symmetry fields in AdS space and arbitrary spin mixed-symmetry currents, shadows, and conformal fields in flat space are considered on an equal footing. For the massless and massive fields in AdS and the conformal fields in flat space, simple light-cone gauge actions leading to decoupled equations of motion are found. For the currents and shadows, simple expressions for all 2-point functions are also found. We demonstrate that representation of conformal algebra generators on space of currents, shadows, and conformal fields can be built in terms of spin operators entering the light-cone gauge formulation of AdS fields. This considerably simplifies the study of AdS/CFT correspondence. Light-cone gauge actions for totally symmetric arbitrary spin long conformal fields in flat space are presented. We apply our approach to the study of totally antisymmetric (one-column) and mixed-symmetry (two-column) fields in AdS space and currents, shadows, and conformal fields in flat space.
Secret Symmetries of Type IIB Superstring Theory on AdS3 x S3 x M4
Antonio Pittelli; Alessandro Torrielli; Martin Wolf
2014-11-06T23:59:59.000Z
We establish features of so-called Yangian secret symmetries for AdS3 type IIB superstring backgrounds thus verifying the persistence of such symmetries to this new instance of the AdS/CFT correspondence. Specifically, we find two a priori different classes of secret symmetry generators. One class of generators, anticipated from the previous literature, is more naturally embedded in the algebra governing the integrable scattering problem. The other class of generators is more elusive, and somewhat closer in its form to its higher-dimensional AdS5 counterpart. All of these symmetries respect left-right crossing. In addition, by considering the interplay between left and right representations, we gain a new perspective on the AdS5 case. We also study the RTT-realisation of the Yangian in AdS3 backgrounds thus establishing a new incarnation of the Beisert-de Leeuw construction.
Instability corners in AdS space
Fotios V. Dimitrakopoulos; Ben Freivogel; Matthew Lippert; I-Sheng Yang
2014-10-07T23:59:59.000Z
We investigate whether arbitrarily small perturbations in global AdS space are generically unstable and collapse into black holes on the time scale set by gravitational interactions. We argue that current evidence, combined with our analysis, strongly suggests that a set of nonzero measure in the space of initial conditions does not collapse on this time scale. On the other hand, existing results do not provide an equally strong indication whether the unstable solutions also form a set of nonzero measure. We perform an analysis in position space to address this puzzle, and our formalism allows us to directly address the vanishing-amplitude limit. We show that gravitational self-interaction leads to tidal deformations which are equally likely to focus or defocus energy, and we sketch the phase diagram accordingly. We also clarify the connection between gravitational evolution in global AdS and holographic thermalization.
Refined Holographic Entanglement Entropy for the AdS Solitons and AdS black Holes
Masafumi Ishihara; Feng-Li Lin; Bo Ning
2013-04-04T23:59:59.000Z
We consider the refinement of the holographic entanglement entropy for the holographic dual theories to the AdS solitons and AdS black holes, including the corrected ones by the Gauss-Bonnet term. The refinement is obtained by extracting the UV-independent piece of the holographic entanglement entropy, the so-called renormalized entanglement entropy which is independent of the choices of UV cutoff. Our main results are (i) the renormalized entanglement entropies of the AdS$_{d+1}$ soliton for $d=4,5$ are neither monotonically decreasing along the RG flow nor positive definite, especially around the deconfinement/confinement phase transition; (ii) there is no topological entanglement entropy for AdS$_5$ soliton even with Gauss-Bonnet correction; (iii) for the AdS black holes, the renormalized entanglement entropy obeys an expected volume law at IR regime, and the transition between UV and IR regimes is a smooth crossover even with Gauss-Bonnet correction; (iv) based on AdS/MERA conjecture, we postulate that the IR fixed-point state for the non-extremal AdS soliton is a trivial product state.
Measurement of neutron yield by 62 MeV proton beam on a thick Beryllium target
R. Alba; M. Barbagallo; P. Boccaccio; A. Celentano; N. Colonna; G. Cosentino; A. Del Zoppo; A. Di Pietro; J. Esposito; P. Figuera; P. Finocchiaro; A. Kostyukov; C. Maiolino; M. Osipenko; G. Ricco; M. Ripani; C. M. Viberti; D. Santonocito; M. Schillaci
2012-08-08T23:59:59.000Z
In the framework of research on IVth generation reactors and high intensity neutron sources a low-power prototype neutron amplifier was recently proposed by INFN. It is based on a low-energy, high current proton cyclotron, whose beam, impinging on a thick Beryllium converter, produces a fast neutron spectrum. The world database on the neutron yield from thick Beryllium target in the 70 MeV proton energy domain is rather scarce. The new measurement was performed at LNS, covering a wide angular range from 0 to 150 degrees and an almost complete neutron energy interval. In this contribution the preliminary data are discussed together with the proposed ADS facility.
Laser Seeding Yields High-Power Coherent Terahertz Radiation
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in...
C-AD electron-cooling Photocathode and Laser
C-AD electron-cooling Photocathode and Laser A. Burrill and T. Rao #12;C-AD electron system Design of 2nd and third generation system · Laser system Requirements Commercial Capsule fabrication · Brazing · Metallization #12;C-AD electron-cooling Overview Photocathode Requirements
Yield criteria for quasibrittle and frictional materials
Davide Bigoni; Andrea Piccolroaz
2010-10-09T23:59:59.000Z
A new yield/damage function is proposed for modelling the inelastic behaviour of a broad class of pressure-sensitive, frictional, ductile and brittle-cohesive materials. The yield function allows the possibility of describing a transition between the shape of a yield surface typical of a class of materials to that typical of another class of materals. This is a fundamental key to model the behaviour of materials which become cohesive during hardening (so that the shape of the yield surface evolves from that typical of a granular material to that typical of a dense material), or which decrease cohesion due to damage accumulation. The proposed yield function is shown to agree with a variety of experimental data relative to soil, concrete, rock, metallic and composite powders, metallic foams, porous metals, and polymers. The yield function represents a single, convex and smooth surface in stress space approaching as limit situations well-known criteria and the extreme limits of convexity in the deviatoric plane. The yield function is therefore a generalization of several criteria, including von Mises, Drucker-Prager, Tresca, modified Tresca, Coulomb-Mohr, modified Cam-clay, and --concerning the deviatoric section-- Rankine and Ottosen. Convexity of the function is proved by developing two general propositions relating convexity of the yield surface to convexity of the corresponding function. These propositions are general and therefore may be employed to generate other convex yield functions.
Alternative approach to the regularization of odd dimensional AdS gravity
Pablo Mora
2007-08-23T23:59:59.000Z
In this paper I present an action principle for odd dimensional AdS gravity which consists of introducing another manifold with the same boundary and a very specific boundary term. This new action allows and alternative approach to the regularization of the theory, yielding a finite euclidean action and finite conserved charges. The choice of the boundary term is justified on the grounds that an enhanced 'almost off-shell' local AdS/Conformal symmetry arises for that very special choice. One may say that the boundary term is dictated by a guiding symmetry principle. Two sets of boundary conditions are considered, which yield regularization procedures analogous to (but different from) the standard 'background substraction' and 'counterterms' regularization methods. The Noether charges are constructed in general. As an application it is shown that for Schwarszchild-AdS black holes the charge associated to the time-like Killing vector is finite and is indeed the mass. The Euclidean action for Schwarzschild-AdS black holes is computed, and it turns out to be finite, and to yield the right thermodynamics. The previous paragraph may be interpreted in the sense that the boundary term dictated by the symmetry principle is the one that correctly regularizes the action.
A generalization of the Lax pair for the pure spinor superstring in AdS5 x S5
Andrei Mikhailov
2013-08-09T23:59:59.000Z
We show that the Lax pair of the pure spinor superstring in AdS5xS5 admits a generalization where the generators of the superconformal algebra are replaced by the generators of some infinite-dimensional Lie superalgebra.
A generalization of the Lax pair for the pure spinor superstring in AdS5 x S5
Mikhailov, Andrei
2013-01-01T23:59:59.000Z
We show that the Lax pair of the pure spinor superstring in AdS5xS5 admits a generalization where the generators of the superconformal algebra are replaced by the generators of some infinite-dimensional Lie superalgebra.
Property Tax Exemption for Wind Generators (Oklahoma)
Broader source: Energy.gov [DOE]
The state of Oklahoma offers a five year ad valorem property tax exemption for certain windpower generators.
Jenkins, Marisa Rachael
2009-01-01T23:59:59.000Z
Automatic Dependent Surveillance-Broadcast (ADS-B) is considered to be a crucial part of the next generation of air transportation systems worldwide. Developing mature ADS-B applications which provide stakeholders with ...
UNCONVENTIONAL METHODS FOR YIELD IMPROVEMENT
Beckermann, Christoph
% on an optimized casting system. 1. Tonnage per pattern (yield increases with its increase). 2. Percentage of pump. Percentage of wear-resistant production (yield increases with its increase). 10. Typical casting "box" volume
1 Antenna Beamforming and Power Control for Ad Hoc Networks
Ramanathan, Ram
1 Antenna Beamforming and Power Control for Ad Hoc Networks RAM RAMANATHAN BBN Technologies power, spreading code, and antenna beams. By controlling these transceiver parameters adaptively, coding, etc.) can also yield benefits, we shall focus on antenna and power control as they have been
Ali Sinag; Melike Sungur; Muammer Canel [Ankara University, Beevler-Ankara (Turkey). Department of Chemistry, Science Faculty
2006-08-15T23:59:59.000Z
Copyrolysis of a Turkish lignite with low-density polyethylene (LDPE) is conducted in a tubular reactor. The effect of experimental conditions (temperature of 400-700{sup o}C, catalyst, LDPE contents of the mixture are 33, 50, and 67 wt %) on the formation of tar, gas, and char and their effects on the formation of phenol are investigated. The catalysts used are red mud (which is a waste product of an aluminum factory in Turkey), zeolite (Linde type A (LTA)), and K{sub 2}CO{sub 3}. Tar evolution is determined to be increased significantly by increasing the LDPE content of the coal-LDPE mixture during the pyrolysis. The effect of adding LDPE to the coal on the gas generation is not remarkable. An increase in temperature leads to increased gas yields. Phenol and phenol derivatives are the obstacles for the complete conversion of lignite to tar and gas. To investigate this negative effect of phenols on the yields, the phenols found in tar from coal pyrolysis are detected by gas chromatography-mass spectroscopy (GC-MS), and it is observed that phenolic structures detected in the tar obtained by individual pyrolysis of coal are dramatically decreased by adding polymer to the coal. The use of catalysts during the copyrolysis procedure leads to improved gas generation. The possible reasons of these variations are discussed. A remarkable synergetic effect between lignite and LDPE on the tar yields is also observed. 21 refs., 8 figs., 4 tabs.
Branes in AdS and pp-wave spacetimes
Kostas Skenderis; Marika Taylor
2002-07-03T23:59:59.000Z
We find half supersymmetric AdS-embeddings in AdS_5 x S^5 corresponding to all quarter BPS orthogonal intersections of D3-branes with Dp-branes. A particular case is the Karch-Randall embedding AdS_4 x S^2. We explicitly prove that these embeddings are supersymmetric by showing that the kappa symmetry projections are compatible with half of the target space Killing spinors and argue that all these cases lead to AdS/dCFT dualities involving a CFT with a defect. We also find an asymptotically AdS_4 x S^2 embedding that corresponds to a holographic RG-flow on the defect. We then consider the pp-wave limit of the supersymmetric AdS-embeddings and show how it leads to half supersymmetric D-brane embeddings in the pp-wave background. We systematically analyze D-brane embeddings in the pp-wave background along with their supersymmetry. We construct all supersymmetric D-branes wrapped along the light-cone using operators in the dual gauge theory: the open string states are constructed using defect fields. We also find supersymmetric D1 (monopoles) and D3 (giant gravitons) branes that wrap only one of the light-cone directions. These correspond to non-perturbative states in the dual gauge theory.
Ad Hoc Curriculum Implementation Working Group Ad Hoc Working Group
Brown, Sally
Ad Hoc Curriculum Implementation Working Group MINUTES Ad Hoc Working Group 4 December 2002 Friedman on her visit next week. ONE CURRICULUM OR TWO? Information presented by Trudeau shows that PSE and other programs cannot be merged into a single curriculum. The Faculty Senate website states
Paris-Sud XI, Université de
for petrologic sulfur estimates Fidel Costa1 and Bruno Scaillet Institut des Sciences de la Terre d'Orle´ans, UMR petrological, analytical, and thermodyna- mical data to constrain the sulfur yield of the AD 1600 Huaynaputina loading of the AD 1600 Huaynaputina eruption and implications for petrologic sulfur estimates, Geophys
Ultraviolet asymptotics for quasiperiodic AdS_4 perturbations
Ben Craps; Oleg Evnin; Puttarak Jai-akson; Joris Vanhoof
2015-09-04T23:59:59.000Z
Spherically symmetric perturbations in AdS-scalar field systems of small amplitude epsilon approximately periodic on time scales of order 1/epsilon^2 (in the sense that no significant transfer of energy between the AdS normal modes occurs) have played an important role in considerations of AdS stability. They are seen as anchors of stability islands where collapse of small perturbations to black holes does not occur. (This collapse, if it happens, typically develops on time scales of the order 1/epsilon^2.) We construct an analytic treatment of the frequency spectra of such quasiperiodic perturbations, paying special attention to the large frequency asymptotics. For the case of a self-interacting phi^4 scalar field in a non-dynamical AdS background, we arrive at a fairly complete analytic picture involving quasiperiodic spectra with an exponential suppression modulated by a power law at large mode numbers. For the case of dynamical gravity, the structure of the large frequency asymptotics is more complicated. We give analytic explanations for the general qualitative features of quasiperiodic solutions localized around a single mode, in close parallel to our discussion of the probe scalar field, and find numerical evidence for logarithmic modulations in the gravitational quasiperiodic spectra existing on top of the formulas previously reported in the literature.
Northern California: Innovative Exploration Technologies Yield...
Office of Environmental Management (EM)
Northern California: Innovative Exploration Technologies Yield Geothermal Potential Northern California: Innovative Exploration Technologies Yield Geothermal Potential August 22,...
Jet Quenching via Gravitational Radiation in Thermal AdS
Edward Shuryak; Ho-Ung Yee; Ismail Zahed
2011-10-04T23:59:59.000Z
We argue that classical bulk gravitational radiation effects in AdS/CFT, previously ignored because of their subleading nature in the 1/Nc-expansion, are magnified by powers of large Lorentz factors gamma for ultrarelativistic jets, thereby dominating other forms of jet energy loss in holography at finite temperature. We make use of the induced gravitational self-force in thermal AdS5 to estimate its effects. In a thermal medium, relativistic jets may loose most of their energy through longitudinal drag caused by the energy accumulated in their nearby field as they zip through the strongly coupled plasma.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5(Million Cubic Feet) Oregon (Including Vehicle Fuel) (MillionStructural Basis of5, 2014 |andWaterResidential VolunteerNuclear6rYellow:
Acid soil infertility effects on peanut yields and yield components
Blamey, F.P.C.
1983-01-01T23:59:59.000Z
The interpretation of soil amelioration experiments with peanuts is made difficult by the unpredictibility of the crop and by the many factors altered when ameliorating acid soils. The present study was conducted to investigate the effects of lime and gypsum applications on peanut kernel yield via the three first order yield components, pods per ha, kernels per pod, and kernel mass. On an acid medium sandy loam soil (typic Plinthustult), liming resulted in a highly significant kernel yield increase of 117% whereas gypsum applications were of no significant benefit. As indicated by path coefficient analysis, an increase in the number of pods per ha was markedly more important in increasing yield than an increase in either the number of kernels per pod or kernel mass. Furthermore, exch. Al was found to be particularly detrimental to pod number. It was postulated that poor peanut yields resulting from acid soil infertility were mainly due to the depressive effect of exch. Al on pod number. Exch. Ca appeared to play a secondary role by ameliorating the adverse effects of exch. Al.
Emergent quantum criticality, Fermi surfaces, and AdS2
Thomas Faulkner; Hong Liu; John McGreevy; David Vegh
2011-10-30T23:59:59.000Z
Gravity solutions dual to d-dimensional field theories at finite charge density have a near-horizon region which is AdS_2 x R^{d-1}. The scale invariance of the AdS_2 region implies that at low energies the dual field theory exhibits emergent quantum critical behavior controlled by a (0+1)-dimensional CFT. This interpretation sheds light on recently-discovered holographic descriptions of Fermi surfaces, allowing an analytic understanding of their low-energy excitations. For example, the scaling behavior near the Fermi surfaces is determined by conformal dimensions in the emergent IR CFT. In particular, when the operator is marginal in the IR CFT, the corresponding spectral function is precisely of the "Marginal Fermi Liquid" form, postulated to describe the optimally doped cuprates.
Perturbative entanglement thermodynamics for AdS spacetime: Renormalization
Rohit Mishra; Harvendra Singh
2015-07-14T23:59:59.000Z
We study the effect of charged excitations in the AdS spacetime on the first law of entanglement thermodynamics. It is found that `boosted' AdS black holes give rise to a more general form of first law which includes chemical potential and charge density. To obtain this result we have to resort to a second order perturbative calculation of entanglement entropy for small size subsystems. At first order the form of entanglement law remains unchanged even in the presence of charged excitations. But the thermodynamic quantities have to be appropriately `renormalized' at the second order due to the corrections. We work in the perturbative regime where $T_{thermal}\\ll T_E$.
AdS_6 solutions of type II supergravity
Fabio Apruzzi; Marco Fazzi; Achilleas Passias; Dario Rosa; Alessandro Tomasiello
2015-04-03T23:59:59.000Z
Very few AdS_6 x M_4 supersymmetric solutions are known: one in massive IIA, and two IIB solutions dual to it. The IIA solution is known to be unique; in this paper, we use the pure spinor approach to give a classification for IIB supergravity. We reduce the problem to two PDEs on a two-dimensional space Sigma. M_4 is then a fibration of S^2 over Sigma; the metric and fluxes are completely determined in terms of the solution to the PDEs. The results seem likely to accommodate near-horizon limits of (p,q)-fivebrane webs studied in the literature as a source of CFT_5's. We also show that there are no AdS_6 solutions in eleven-dimensional supergravity.
Perturbative entanglement thermodynamics for AdS spacetime: Renormalization
Mishra, Rohit
2015-01-01T23:59:59.000Z
We study the effect of charged excitations in the AdS spacetime on the first law of entanglement thermodynamics. It is found that `boosted' AdS black holes give rise to a more general form of first law which includes chemical potential and charge density. To obtain this result we have to resort to a second order perturbative calculation of entanglement entropy for small size subsystems. At first order the form of entanglement law remains unchanged even in the presence of charged excitations. But the thermodynamic quantities have to be appropriately `renormalized' at the second order due to the corrections. We work in the perturbative regime where $T_{thermal}\\ll T_E$.
Quintessence and effective AdS brane geometries
K. Priyabrat Pandey; Abhishek K. Singh; Sunita Singh; Supriya Kar
2014-07-25T23:59:59.000Z
A geometric torsion dynamics leading to an effective curvature in a second order formalism on a D4-brane is revisited with a renewed interest. We obtain two effective $AdS_4$ brane geometries on a vacuum created pair of $(D{\\bar D})_3$-brane. One of them is shown to describe an AdS Schwarzschild spinning black hole and the other is shown to describe a spinning black hole bound state. It is argued that a D-instanton in a vacuum created anti D3-brane within a pair may describe a quintessence. It may seen to incorporate a varying vacuum energy density in a brane universe. We consider the effective curvature scalar on $S^1\\times S^1$ to analyze torsion-less geometries on a vacuum created pair of $(D{\\bar D})_2$-brane. The emergent $AdS_3$ brane is shown to describe a Schwarzschild and a Reissner-Nordstrom (RN) geometries in presence of extra dimension(s).
F. Arqueros; F. Blanco; D. Garcia-Pinto; M. Ortiz; J. Rosado
2008-07-30T23:59:59.000Z
Detection of the air-fluorescence radiation induced by the charged particles of extensive air showers is a well-established technique for the study of ultra-high energy cosmic rays. Fluorescence telescopes provide a nearly calorimetric measure of the primary energy. Presently the main source of systematic uncertainties comes from our limited accuracy in the fluorescence yield, that is, the number of fluorescence photons emitted per unit of energy deposited in the atmosphere by the shower particles. In this paper the current status of our knowledge on the fluorescence yield both experimental an theoretical will be discussed.
Quantum strings in AdS5 x S5 and AdS/CFT duality
A. A. Tseytlin
2009-09-23T23:59:59.000Z
We review some recent progress in understanding the spectrum of energies/dimensions of strings/operators in AdS5 x S5 -- planar N=4 super Yang-Mills correspondence. We consider leading strong coupling corrections to the energy of lightest massive string modes in AdS5 x S5, which should be dual to members of the Konishi operator multiplet in the SYM theory. This determines the general structure of strong-coupling expansion of the anomalous dimension of the Konishi operator. Following arXiv:0906.4294 we use 1-loop results for semiclassical string states to extract information about the leading coefficients in this expansion.
Entanglement Entropy and Duality in AdS(4)
Ioannis Bakas; Georgios Pastras
2015-04-30T23:59:59.000Z
Small variations of the entanglement entropy \\delta S and the expectation value of the modular Hamiltonian \\delta E are computed holographically for circular entangling curves in the boundary of AdS(4), using gravitational perturbations with general boundary conditions in spherical coordinates. Agreement with the first law of thermodynamics, \\delta S = \\delta E, requires that the line element of the entangling curve remains constant. In this context, we also find a manifestation of electric-magnetic duality for the entanglement entropy and the corresponding modular Hamiltonian, following from the holographic energy-momentum/Cotton tensor duality.
Entanglement Entropy and Duality in AdS(4)
Bakas, Ioannis
2015-01-01T23:59:59.000Z
Small variations of the entanglement entropy \\delta S and the expectation value of the modular Hamiltonian \\delta E are computed holographically for circular entangling curves in the boundary of AdS(4), using gravitational perturbations with general boundary conditions in spherical coordinates. Agreement with the first law of thermodynamics, \\delta S = \\delta E, requires that the line element of the entangling curve remains constant. In this context, we also find a manifestation of electric-magnetic duality for the entanglement entropy and the corresponding modular Hamiltonian, following from the holographic energy-momentum/Cotton tensor duality.
AdS Chern-Simons Gravity induces Conformal Gravity
Rodrigo Aros; Danilo E. Diaz
2013-12-25T23:59:59.000Z
The leitmotif of this paper is the question of whether four- and higher even-dimensional Conformal Gravities do have a Chern-Simons pedigree. We show that Weyl gravity can be obtained as dimensional reduction of a five-dimensional Chern-Simons action for a suitable (gauged-fixed, tractor-like) five-dimensional AdS connection. The gauge-fixing and dimensional reduction program admits a readily generalization to higher dimensions for the case of certain conformal gravities obtained by contractions of the Weyl tensor.
Thermal Fluctuations in a Charged AdS Black Hole
Pourhassan, B
2015-01-01T23:59:59.000Z
In this paper, we will analyze the effects of thermal fluctuations on a charged AdS black hole. This will be done by analyzing the corrections to black hole thermodynamics due to these thermal fluctuations. We will demonstrate that the entropy of this black hole get corrected by logarithmic term. We will also calculate other corrections to other important thermodynamic quantities for this black hole. Finally, we will use the corrected value of the specific heat to analyze the phase transition in this system.
Thermal Fluctuations in a Charged AdS Black Hole
B. Pourhassan; Mir Faizal
2015-08-12T23:59:59.000Z
In this paper, we will analyze the effects of thermal fluctuations on a charged AdS black hole. This will be done by analyzing the corrections to black hole thermodynamics due to these thermal fluctuations. We will demonstrate that the entropy of this black hole get corrected by logarithmic term. We will also calculate other corrections to other important thermodynamic quantities for this black hole. Finally, we will use the corrected value of the specific heat to analyze the phase transition in this system.
Caldwell Ranch: Innovative Exploration Technologies Yield Geothermal...
Caldwell Ranch: Innovative Exploration Technologies Yield Geothermal Potential Caldwell Ranch: Innovative Exploration Technologies Yield Geothermal Potential July 11, 2013 - 4:55pm...
Strings on AdS Wormholes and Nonsingular Black Holes
H. Lu; Justin F. Vazquez-Poritz; Zhibai Zhang
2014-10-22T23:59:59.000Z
Certain AdS black holes in the STU model can be conformally scaled to wormhole and black hole solutions of an f(R) type theory which have two asymptotically AdS regions and are completely free of curvature singularities. While there is a delta-function source for the dilaton, classical string probes are not sensitive to this singularity. If the AdS/CFT correspondence can be applied in this context, then the wormhole background describes a phase in which two copies of a conformal field theory interact with each other, whereas the nonsingular black hole describes entangled states. By studying the behavior of open strings on these backgrounds, we extract a number of features of the quarks and anti-quarks that live in the field theories. In the interacting phase, we find that there is a maximum speed with which the quarks can move without losing energy, beyond which energy is transferred from a quark in one field theory to a quark in the other. We also compute the rate at which moving quarks within entangled states lose energy to the two surrounding plasmas. While a quark-antiquark pair within a single field theory exhibits Coulomb interaction for small separation, a quark in one field theory exhibits spring-like confinement with an anti-quark in the other field theory. For the entangled states, we study how the quark-antiquark screening length depends on temperature and chemical potential. In the interacting phase of the two field theories, a quadruplet made up of one quark-antiquark pair in each field theory can undergo transitions involving how the quarks and antiquarks are paired in terms of the screening.
Marco M. Caldarelli; Joan Camps; Blaise Goutéraux; Kostas Skenderis
2014-04-18T23:59:59.000Z
We present a comprehensive analysis of the AdS/Ricci-flat correspondence, a map between a class of asymptotically locally AdS spacetimes and a class of Ricci-flat spacetimes. We provide a detailed derivation of the map, discuss a number of extensions and apply it to a number of important examples, such as AdS on a torus, AdS black branes and fluids/gravity metrics. In particular, the correspondence links the hydrodynamic regime of asymptotically flat black $p$-branes or the Rindler fluid with that of AdS. It implies that this class of Ricci-flat spacetimes inherits from AdS a generalized conformal symmetry and has a holographic structure. We initiate the discussion of holography by analyzing how the map acts on boundary conditions and holographic 2-point functions.
Adding Value to Agricultural Products
Anderson, David P.; Hanselka, Daniel
2009-06-01T23:59:59.000Z
and some of the viscera into menudo or tripas. Booker Packing Company, Caviness Packing Company and J&B Foods are some of the compa- nies adding value to meat successfully in spite of processing costs. A recent survey of such companies indicated...
Matching of correlators in AdS_3/CFT_2
Marika Taylor
2007-09-12T23:59:59.000Z
Recently exact agreement has been found between three-point correlators of chiral operators computed in string theory on AdS_3 x S^3 x T^4 with NS-NS flux and those computed in the symmetric orbifold CFT. However, it has also been shown that these correlators disagree with those computed in supergravity, under any identification of single particle operators which respects the symmetries. In this note we resolve this disagreement: the key point is that mixings with multi-particle operators are not suppressed even at large N in extremal correlators. Allowing for such mixings, orbifold/string theory operators and supergravity operators can be matched such that both non-extremal and extremal three point functions agree, giving further evidence for the non-renormalization of the chiral ring.
The Analytic Bootstrap and AdS Superhorizon Locality
A. Liam Fitzpatrick; Jared Kaplan; David Poland; David Simmons-Duffin
2013-01-24T23:59:59.000Z
We take an analytic approach to the CFT bootstrap, studying the 4-pt correlators of d > 2 dimensional CFTs in an Eikonal-type limit, where the conformal cross ratios satisfy |u| 2\\Delta_\\phi + 2n for each integer n as l -> infinity. We show how the rate of approach is controlled by the twist and OPE coefficient of the leading twist operator in the \\phi x \\phi OPE, and we discuss SCFTs and the 3d Ising Model as examples. Additionally, we show that the OPE coefficients of other large spin operators appearing in the OPE are bounded as l -> infinity. We interpret these results as a statement about superhorizon locality in AdS for general CFTs.
AdS Bubbles, E$p$-branes and Entanglement
Harvendra Singh
2014-10-15T23:59:59.000Z
The AdS-bubble solutions interestingly mimic Schr\\"odinger-like geometries when expressed in light-cone coordinates. These D$p$ bubble vacuas exhibit asymmetric scaling property with a negative dynamical exponent of time $a0$ in type II* super-strings. We obtain an expression for the entanglement entropy for `bubble E3-branes'. It is argued that the entropy from E3-bubbles has to be the lowest.
Islands of stability and recurrence times in AdS
Stephen R. Green; Antoine Maillard; Luis Lehner; Steven L. Liebling
2015-08-27T23:59:59.000Z
We study the stability of anti-de Sitter (AdS) spacetime to spherically symmetric perturbations of a real scalar field in general relativity. Further, we work within the context of the "two time framework" (TTF) approximation, which describes the leading nonlinear effects for small amplitude perturbations, and is therefore suitable for studying the weakly turbulent instability of AdS---including both collapsing and non-collapsing solutions. We have previously identified a class of quasi-periodic (QP) solutions to the TTF equations, and in this work we analyze their stability. We show that there exist several families of QP solutions that are stable to linear order, and we argue that these solutions represent islands of stability in TTF. We extract the eigenmodes of small oscillations about QP solutions, and we use them to predict approximate recurrence times for generic non-collapsing initial data in the full (non-TTF) system. Alternatively, when sufficient energy is driven to high-frequency modes, as occurs for initial data far from a QP solution, the TTF description breaks down as an approximation to the full system. Depending on the higher order dynamics of the full system, this often signals an imminent collapse to a black hole.
Islands of stability and recurrence times in AdS
Green, Stephen R; Lehner, Luis; Liebling, Steven L
2015-01-01T23:59:59.000Z
We study the stability of anti-de Sitter (AdS) spacetime to spherically symmetric perturbations of a real scalar field in general relativity. Further, we work within the context of the "two time framework" (TTF) approximation, which describes the leading nonlinear effects for small amplitude perturbations, and is therefore suitable for studying the weakly turbulent instability of AdS---including both collapsing and non-collapsing solutions. We have previously identified a class of quasi-periodic (QP) solutions to the TTF equations, and in this work we analyze their stability. We show that there exist several families of QP solutions that are stable to linear order, and we argue that these solutions represent islands of stability in TTF. We extract the eigenmodes of small oscillations about QP solutions, and we use them to predict approximate recurrence times for generic non-collapsing initial data in the full (non-TTF) system. Alternatively, when sufficient energy is driven to high-frequency modes, as occurs ...
Islands of stability and recurrence times in AdS
Stephen R. Green; Antoine Maillard; Luis Lehner; Steven L. Liebling
2015-07-29T23:59:59.000Z
We study the stability of anti-de Sitter (AdS) spacetime to spherically symmetric perturbations of a real scalar field in general relativity. Further, we work within the context of the "two time framework" (TTF) approximation, which describes the leading nonlinear effects for small amplitude perturbations, and is therefore suitable for studying the weakly turbulent instability of AdS---including both collapsing and non-collapsing solutions. We have previously identified a class of quasi-periodic (QP) solutions to the TTF equations, and in this work we analyze their stability. We show that there exist several families of QP solutions that are stable to linear order, and we argue that these solutions represent islands of stability in TTF. We extract the eigenmodes of small oscillations about QP solutions, and we use them to predict approximate recurrence times for generic non-collapsing initial data in the full (non-TTF) system. Alternatively, when sufficient energy is driven to high-frequency modes, as occurs for initial data far from a QP solution, the TTF description breaks down as an approximation to the full system. Depending on the higher order dynamics of the full system, this often signals an imminent collapse to a black hole.
Chaotic strings in a near Penrose limit of AdS$_5\\times T^{1,1}$
Yuhma Asano; Daisuke Kawai; Hideki Kyono; Kentaroh Yoshida
2015-07-17T23:59:59.000Z
We study chaotic motions of a classical string in a near Penrose limit of AdS$_5\\times T^{1,1}$. It is known that chaotic solutions appear on $R\\times T^{1,1}$, depending on initial conditions. It may be interesting to ask whether the chaos persists even in Penrose limits or not. In this paper, we show that sub-leading corrections in a Penrose limit provide an unstable separatrix, so that chaotic motions are generated as a consequence of collapsed Kolmogorov-Arnold-Moser (KAM) tori. Our analysis is based on deriving a reduced system composed of two degrees of freedom by supposing a winding string ansatz. Then, we provide support for the existence of chaos by computing Poincare sections. In comparison to the AdS$_5\\times T^{1,1}$ case, we argue that no chaos lives in a near Penrose limit of AdS$_5\\times$S$^5$, as expected from the classical integrability of the parent system.
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Method for conversion of carbohydrate polymers to value-added chemical products
Zhang, Zongchao C. (Norwood, NJ); Brown, Heather M. (Kennewick, WA); Su, Yu (Richland, WA)
2012-02-07T23:59:59.000Z
Methods are described for conversion of carbohydrate polymers in ionic liquids, including cellulose, that yield value-added chemicals including, e.g., glucose and 5-hydroxylmethylfurfural (HMF) at temperatures below 120.degree. C. Catalyst compositions that include various mixed metal halides are described that are selective for specified products with yields, e.g., of up to about 56% in a single step process.
Shlapentokh, Alexandra
Diophantine Generation, Horizontal and Vertical Problems, and the Weak Vertical Method Alexandra Shlapentokh Diophantine Sets, Definitions and Generation Diophantine Sets Diophantine Generation Properties of Diophantine Generation Diophantine Family of Z Diophantine Family of a Polynomial Ring Going Down Horizontal
The Blackbody Radiation Laws in the $ \\textrm{AdS}_5 \\times {\\cal S}^5 $ Spacetime
Ramaton Ramos; Henrique Boschi-Filho
2015-04-25T23:59:59.000Z
In the footsteps of our previous work \\cite{RamatonBoschi} we generalize the Stefan-Boltzmann and Wien's displacement laws for the $ \\textrm{AdS}_5 \\times {\\cal S}^5 $ spacetime, the background of the AdS/CFT correspondence foremost realization. Our results take into account the $ \\textrm{AdS}_5 \\times {\\cal S}^5 $ full dimensionality in the electromagnetic field $A^{\\mu}$ wave equation, which yields the higher-dimensional blackbody characteristic features suggested in literature. In particular, the total radiated power and the spectral radiancy match the original Stefan-Boltzmann and Wien's displacement laws in the low-energy regime up to available experimental data.
Determination of thermal neutron capture gamma yields.
Harper, Thomas Lawrence
1969-01-01T23:59:59.000Z
A method of analysing Ge(Li) thermal neutron capture gamma spectra to obtain total gamma yields has been developed. Tie method determines both the yields from the well resolved gamma peaks in a spectrum as well as the gamma ...
Determination of thermal neutron capture gamma yields
Harper, Thomas Lawrence
1969-01-01T23:59:59.000Z
A method of analysing Ge(Li) thermal neutron capture gamma spectra to obtain total gamma yields has been developed. Tie method determines both the yields from the well resolved gamma peaks in a spectrum as well as the gamma ...
Yield learning model for integrated circuit package
Balasubramaniam, Gaurishankar
1996-01-01T23:59:59.000Z
assemblies has been developed and implemented. Sensitivity analysis was performed to isolate the factors that affected yield learning the most. The yield model was developed after performing case studies on the Tape Carrier Package at Intel Corporation...
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Fermilab Today - Classified Ad Policy
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville Power AdministrationHawaiiEnergy StorageDepartmentPOPSECFemtosecond ArchiveNov.MaySept.1, 20117, 2012Ad
EXPECTED LARGE SYNOPTIC SURVEY TELESCOPE (LSST) YIELD OF ECLIPSING BINARY STARS
Prsa, Andrej [Department of Astronomy and Astrophysics, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085 (United States); Pepper, Joshua; Stassun, Keivan G., E-mail: andrej.prsa@villanova.edu [Physics and Astronomy Department, Vanderbilt University, 2201 West End Avenue, Nashville, TN 37235 (United States)
2011-08-15T23:59:59.000Z
In this paper, we estimate the Large Synoptic Survey Telescope (LSST) yield of eclipsing binary stars, which will survey {approx}20,000 deg{sup 2} of the southern sky during a period of 10 years in six photometric passbands to r {approx} 24.5. We generate a set of 10,000 eclipsing binary light curves sampled to the LSST time cadence across the whole sky, with added noise as a function of apparent magnitude. This set is passed to the analysis-of-variance period finder to assess the recoverability rate for the periods, and the successfully phased light curves are passed to the artificial-intelligence-based pipeline ebai to assess the recoverability rate in terms of the eclipsing binaries' physical and geometric parameters. We find that, out of {approx}24 million eclipsing binaries observed by LSST with a signal-to-noise ratio >10 in mission lifetime, {approx}28% or 6.7 million can be fully characterized by the pipeline. Of those, {approx}25% or 1.7 million will be double-lined binaries, a true treasure trove for stellar astrophysics.
AEI-2008-085 The Classical Exchange Algebra of AdS5 S5
Paris-Sud XI, Université de
AEI-2008-085 The Classical Exchange Algebra of AdS5 × S5 String Theory Marc Magro Universit´e de matrix of AdS5× S5 string theory in the Green-Schwarz formulation is determined by using a first the pure spinor description of AdS5 × S5 string theory. These results are compared to the one obtained by A
On Rotating and Oscillating Four-Spin Strings in AdS5 X S5
Kamal L. Panigrahi; Pabitra M. Pradhan
2012-10-26T23:59:59.000Z
We study rigidly rotating strings in AdS5 X S5 background with one spin along AdS5 and three angular momenta along S5. We find dispersion relations among various charges and interpret them as giant magnon and spiky string solutions in various limits. Further we present an example of oscillating string which oscillates in the radial direction of the AdS5 and at the same time rotates in S5.
On Rotating and Oscillating Four-Spin Strings in AdS5 X S5
Panigrahi, Kamal L
2012-01-01T23:59:59.000Z
We study rigidly rotating strings in AdS5 X S5 background with one spin along AdS5 and three angular momenta along S5. We find dispersion relations among various charges and interpret them as giant magnon and spiky string solutions in various limits. Further we present an example of oscillating string which oscillates in the radial direction of the AdS5 and at the same time rotates in S5.
Longitudinal Analysis of Android Ad Library Permissions
Wallach, Dan
Longitudinal Analysis of Android Ad Library Permissions Theodore Book, Adam Pridgen, Dan S. Wallach in the behavior of Android ad libraries. Taking a sample of 114,000 apps, we extract and classify their ad particular risks to user privacy and security. I. INTRODUCTION The Android operating system is one
The different phases of hairy black holes in AdS5 space
Gaston Giribet; Andres Goya; Julio Oliva
2014-12-31T23:59:59.000Z
We investigate the thermodynamics of hairy black holes in asymptotically Anti-de Sitter (AdS) space, including backreaction. Resorting to the Euclidean path integral approach, we show that matter conformally coupled to Einstein gravity in five dimensions may exhibit a phase transition whose endpoint turns out to be a hairy black hole in AdS5 space. The scalar field configuration happens to be regular everywhere outside and on the horizon, and behaves asymptotically in such a way that respects the AdS boundary conditions that are relevant for AdS/CFT. The theory presents other peculiar features in the ultraviolet, like the existence of black holes with arbitrarily low temperature in AdS5. This provides a simple setup in which the fully backreacting problem of a hair forming in AdS at certain critical temperature can be solved analytically.
The different phases of hairy black holes in AdS5 space
Giribet, Gaston; Oliva, Julio
2015-01-01T23:59:59.000Z
We investigate the thermodynamics of hairy black holes in asymptotically Anti-de Sitter (AdS) space, including backreaction. Resorting to the Euclidean path integral approach, we show that matter conformally coupled to Einstein gravity in five dimensions may exhibit a phase transition whose endpoint turns out to be a hairy black hole in AdS5 space. The scalar field configuration happens to be regular everywhere outside and on the horizon, and behaves asymptotically in such a way that respects the AdS boundary conditions that are relevant for AdS/CFT. The theory presents other peculiar features in the ultraviolet, like the existence of black holes with arbitrarily low temperature in AdS5. This provides a simple setup in which the fully backreacting problem of a hair forming in AdS at certain critical temperature can be solved analytically.
Tunneling between the giant gravitons in AdS5 x S5
Julian Lee
2001-04-05T23:59:59.000Z
I consider the giant gravitons in AdS5 x S5. By numerical simulation, I show a strong indication that there is no instanton solution describing the direct tunneling between the giant graviton in the S5 and its dual counterpart in the AdS5. I argue that it supports the supersymmetry breaking scenario suggested in hep-th/0008015
LWR (Light Water Reactor) power plant simulations using the AD10 and AD100 systems
Wulff, W.; Cheng, H.S.; Chien, C.J.; Jang, J.Y.; Lin, H.C.; Mallen, A.N.; Wang, S.J. (Brookhaven National Lab., Upton, NY (USA); Institute of Nuclear Energy Research, Lung-Tan (Taiwan); Tawian Power Co., Taipei (Taiwan); Brookhaven National Lab., Upton, NY (USA); Institute of Nuclear Energy Research, Lung-Tan (Taiwan))
1989-01-01T23:59:59.000Z
Boiling (BWR) and Pressurized (PWR) Water Reactor Power Plants are being simulated at BNL with the AD10 and AD100 Peripheral Processor Systems. The AD10 system has been used for BWR simulations since 1984 for safety analyses, emergency training and optimization studies. BWR simulation capabilities have been implemented recently on the AD100 system and PWR simulation capabilities are currently being developed under the auspices of international cooperation. Modeling and simulation methods are presented with emphasis on the simulation of the Nuclear Steam Supply System. Results are presented for BWR simulation and performance characteristics are compared of the AD10 and AD100 systems. It will be shown that the AD100 simulates two times faster than two AD10 processors operating in parallel and that the computing capacity of one AD100 (with FMU processor) is twice as large as that of two AD10 processors. 9 refs., 5 figs., 1 tab.
University Policy No.: AD2210 Classification: Administration
Victoria, University of
University Policy No.: AD2210 Classification: Administration FIELDWORK AND INTERNATIONAL: includes all University of Victoria administrators, faculty, staff, and students while such individuals
University Policy No.: AD2215 Classification: Administration
Victoria, University of
University Policy No.: AD2215 Classification: Administration Approving Authority: Board Review: 1. This statement applies to the policies and administration of trademarks registered
University Policy No.: AD2530 Classification: Administration
Victoria, University of
University Policy No.: AD2530 Classification: Administration PHOTOCOPY AND FACSIMILE (FAX may be obtained through library managed machines or through the use of personal accounts. 1
Olefins from High Yield Autothermal Reforming Process
Energy Innovation Portal (Marketing Summaries) [EERE]
2012-03-06T23:59:59.000Z
The autothermal reforming method employs an improved dehydrogenation process for olefin production, utilizing platinum based dehydrogenation catalysts in the presence of oxygen. The autothermal process requires no external energy input following ignition and produces high conversions and yields from the gaseous hydrocarbon feeds. Autothermal reforming is an effective solution that meets the high demands of the chemical market industry by producing high yields...
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Fernando, Sudarshan; Günaydin, Murat
2015-01-01T23:59:59.000Z
We study the minimal unitary representation (minrep) of SO(5, 2), obtained by quantization of its geometric quasiconformal action, its deformations and supersymmetric extensions. The minrep of SO(5, 2) describes a massless conformal scalar field in five dimensions and admits a unique “deformation” which describes a massless conformal spinor. Scalar and spinor minreps of SO(5, 2) are the 5d analogs of Dirac’s singletons of SO(3, 2). We then construct the minimal unitary representation of the unique 5d supercon-formal algebra F(4) with the even subalgebra SO(5, 2) ×SU(2). The minrep of F(4) describes a massless conformal supermultiplet consisting of two scalar andmore »one spinor fields. We then extend our results to the construction of higher spin AdS6/CFT5 (super)-algebras. The Joseph ideal of the minrep of SO(5, 2) vanishes identically as operators and hence its enveloping algebra yields the AdS6/CFT5 bosonic higher spin algebra directly. The enveloping algebra of the spinor minrep defines a “deformed” higher spin algebra for which a deformed Joseph ideal vanishes identically as operators. These results are then extended to the construction of the unique higher spin AdS6/CFT5 superalgebra as the enveloping algebra of the minimal unitary realization of F(4) obtained by the quasiconformal methods.« less
Distributed services for mobile ad hoc networks
Cao, Guangtong
2005-11-01T23:59:59.000Z
A mobile ad hoc network consists of certain nodes that communicate only through wireless medium and can move arbitrarily. The key feature of a mobile ad hoc network is the mobility of the nodes. Because of the mobility, communication links form...
Distributed services for mobile ad hoc networks
Cao, Guangtong
2005-11-01T23:59:59.000Z
A mobile ad hoc network consists of certain nodes that communicate only through wireless medium and can move arbitrarily. The key feature of a mobile ad hoc network is the mobility of the nodes. Because of the mobility, communication links form...
Splitting of Folded Strings in AdS_4*CP^3
Jun-Bao Wu
2012-08-04T23:59:59.000Z
We study classically splitting of two kinds of folded string solutions in AdS_4*CP^3. Conserved charges of the produced fragments are computed for each case. We find interesting patterns among these conserved charges.
Duality invariance of $s \\ge 3/2$ fermions in AdS
S. Deser; D. Seminara
2014-09-11T23:59:59.000Z
We show that in D=4 AdS, $s\\ge 3/2$ partially massless (PM) fermions retain the duality invariances of their flat space massless counterparts. They have tuned ratios $ {m^2}/{M^2}\
Singh, Santosh Kumar
2010-01-01T23:59:59.000Z
Spectrum is a scarce commodity, and considering the spectrum scarcity faced by the wireless-based service providers led to high congestion levels. Technical inefficiencies from pooled spectrum (this is nothing but the "common carrier principle" adopted in oil/gas/electricity pipelines/networks.), since all ad hoc networks share a common pool of channels, exhausting the available channels will force ad hoc networks to block the services. Researchers found that cognitive radio (CR) technology may resolve the spectrum scarcity. CR network proved to next generation wireless communication system that proposed as a way to reuse under-utilised spectrum of licensee user (primary network) in an opportunistic and non-interfering basis. A CR is a self-configuring entity in a wireless networking that senses its environment, tracks changes, and frequently exchanges information with their networks. Adding this layer of such intelligence to the ad hoc network by looking at the overall geography of the network known as cogni...
Freivogel, Ben; /Stanford U., Phys. Dept. /LBL, Berkeley; Hubeny, Veronika E.; /LBL, Berkeley /Durham U., Dept. of Math.; Maloney, Alexander; /Stanford U., Phys. Dept.; Myers, Rob; /Perimeter Inst. Theor. Phys. /Waterloo U.; Rangamani, Mukund; /LBL, Berkeley /Durham U., Dept. of Math.; Shenker, Stephen; /Stanford U., Phys. Dept.
2005-10-07T23:59:59.000Z
We study the realization of inflation within the AdS/CFT correspondence. We assume the existence of a string landscape containing at least one stable AdS vacuum and a (nearby) metastable de Sitter state. Standard arguments imply that the bulk physics in the vicinity of the AdS minimum is described by a boundary CFT. We argue that large enough bubbles of the dS phase, including those able to inflate, are described by mixed states in the CFT. Inflating degrees of freedom are traced over and do not appear explicitly in the boundary description. They nevertheless leave a distinct imprint on the mixed state. Analytic continuation allows us, in principle, to recover a large amount of nonperturbatively defined information about the inflating regime. Our work also shows that no scattering process can create an inflating region, even by quantum tunneling, since a pure state can never evolve into a mixed state under unitary evolution.We study the realization of inflation within the AdS/CFT correspondence. We assume the existence of a string landscape containing at least one stable AdS vacuum and a (nearby) metastable de Sitter state. Standard arguments imply that the bulk physics in the vicinity of the AdS minimum is described by a boundary CFT. We argue that large enough bubbles of the dS phase, including those able to inflate, are described by mixed states in the CFT. Inflating degrees of freedom are traced over and do not appear explicitly in the boundary description. They nevertheless leave a distinct imprint on the mixed state. Analytic continuation allows us, in principle, to recover a large amount of nonperturbatively defined information about the inflating regime. Our work also shows that no scattering process can create an inflating region, even by quantum tunneling, since a pure state can never evolve into a mixed state under unitary evolution.
NH Timber Yield Tax Overview (RSA 79)
New Hampshire, University of
land. The bond is usually equal to the amount of expected yield tax. When can you appeal: If a taxpayer denies the appeal then the taxpayer may appeal to the Department of Revenue within 180 days of the tax
Stefanou, Nikolaos
2005-08-29T23:59:59.000Z
flash A/D converter using comparator chopping. Chopping of comparators in a flash A/D converter was never previously implemented due to lack of feasibility in implementing multiple, uncorrelated, high speed random number generators. This work proposes a...
Modeling Photon Generation Problem Presenter
Edwards, David A.
on Mathematical Problems in Industry June 1317, 2011 New Jersey Institute of Technology #12;Section 1 generation in quantum experiments, involve one or more pump fields at relatively large amplitude interacting linear form of the CMEs in the undepleted-pump regime, where the CMEs can formally be solved to yield
Soft photon yield in nuclear interactions
Kokoulina, E
2015-01-01T23:59:59.000Z
First results of study of a soft photon yield at Nuclotron (LHEP, JINR) in nucleus-nucleus collisions at 3.5 GeV per nucleon are presented. These photons are registered by an BGO electromagnetic calorimeter built by SVD-2 Collaboration. The obtained spectra confirm the excessive yield in the energy region less than 50 MeV in comparison with theoretical estimations and agree with previous experiments at high-energy interactions.
The Tetrahedron Zamolodchikov Algebra and the AdS5 x S5 S-matrix
Mitev, Vladimir; Tsuboi, Zengo
2012-01-01T23:59:59.000Z
The S-matrix of the AdS5 x S5 string theory is a tensor product of two centrally extended su(2|2) S-matrices, each of which is related to the R-matrix of the Hubbard model. The R-matrix of the Hubbard model was first found by Shastry, who ingeniously exploited the fact that, for zero coupling, the Hubbard model can be decomposed into two XX models. In this article, we review and clarify this construction from the AdS/CFT perspective and investigate the implications this has for the AdS5 x S5 S-matrix.
The Tetrahedron Zamolodchikov Algebra and the AdS5 x S5 S-matrix
Vladimir Mitev; Matthias Staudacher; Zengo Tsuboi
2012-10-08T23:59:59.000Z
The S-matrix of the AdS5 x S5 string theory is a tensor product of two centrally extended su(2|2) S-matrices, each of which is related to the R-matrix of the Hubbard model. The R-matrix of the Hubbard model was first found by Shastry, who ingeniously exploited the fact that, for zero coupling, the Hubbard model can be decomposed into two XX models. In this article, we review and clarify this construction from the AdS/CFT perspective and investigate the implications this has for the AdS5 x S5 S-matrix.
Higher spins in AdS_5 at one loop: vacuum energy, boundary conformal anomalies and AdS/CFT
M. Beccaria; A. A. Tseytlin
2014-11-18T23:59:59.000Z
We consider general-symmetry higher spin fields in AdS_5 and derive expressions for their one-loop corrections to vacuum energy E and the associated 4d boundary conformal anomaly a-coefficient. We a propose a similar expression for the second conformal anomaly c-coefficient. We show that all the three quantities (E, a, c) computed for N=8 gauged 5d supergravity are -1/2 of the values for N=4 conformal 4d supergravity and also twice the values for N=4 Maxwell multiplet. This gives 5d derivation of the fact that the system of N=4 conformal supergravity and four N=4 Maxwell multiplets is anomaly free. The values of (E, a, c) for the states at level p of Kaluza-Klein tower of 10d type IIB supergravity compactified on S^5 turn out to be equal to those for p copies of N=4 Maxwell multiplets. This may be related to the fact that these states appear in the tensor product of p superdoubletons. Under a natural regularization of the sum over p, the full 10d supergravity contribution is then minus that of the Maxwell multiplet, in agreement with the standard adjoint AdS/CFT duality (SU(n) SYM contribution is n^2-1 of one Maxwell multiplet). We also verify the matching of (E, a, c) for spin 0 and 1/2 boundary theory cases of vectorial AdS/CFT duality. The consistency conditions for vectorial AdS/CFT turn out to be equivalent to the cancellation of anomalies in the closely related 4d conformal higher spin theories. In addition, we study novel example of vectorial AdS/CFT duality when the boundary theory is described by free spin 1 fields and is dual to a particular higher spin theory in AdS_5 containing fields in mixed-symmetry representations. We also discuss its supersymmetric generalizations.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Untapped Value of Backup Generation While new guidelines and regulations such as IEEE (Institute of Electrical and Electronics Engineers) 1547 have come a long way in addressing...
Ness, E.
1999-09-02T23:59:59.000Z
Distributed generation, locating electricity generators close to the point of consumption, provides some unique benefits to power companies and customers that are not available from centralized electricity generation. Photovoltaic (PV) technology is well suited to distributed applications and can, especially in concert with other distributed resources, provide a very close match to the customer demand for electricity, at a significantly lower cost than the alternatives. In addition to augmenting power from central-station generating plants, incorporating PV systems enables electric utilities to optimize the utilization of existing transmission and distribution.
Distributed algorithms for mobile ad hoc networks
Malpani, Navneet
2001-01-01T23:59:59.000Z
We first present two new leader election algorithms for mobile ad hoc networks. The algorithms ensure that eventually each connected component of the topology graph has exactly one leader. The algorithms are based on a routing algorithm called TORA...
Missouri Value-Added Grant Program (Missouri)
Broader source: Energy.gov [DOE]
The Missouri Value-Added Grant Program provides grants for projects that add value to Missouri agricultural products and aid the economy of a rural community. Grant applications will be considered...
Virtual infrastructure for wireless ad hoc networks
Gilbert, Seth, 1976-
2007-01-01T23:59:59.000Z
One of the most significant challenges introduced by ad hoc networks is coping with the unpredictable deployment, uncertain reliability, and erratic communication exhibited by emerging wireless networks and devices. The ...
Jia-Lin Zhang; Rong-Gen Cai; Hongwei Yu
2015-03-03T23:59:59.000Z
We study thermodynamics and thermodynamic geometry of a five-dimensional Schwarzschild AdS black hole in $AdS_5\\times{S^5}$ spacetime by treating the cosmological constant as the number of colors in the boundary gauge theory and its conjugate quantity as the associated chemical potential. It is found that the chemical potential is always negative in the stable branch of black hole thermodynamics and it has a chance to be positive, but appears in the unstable branch. We calculate scalar curvatures of the thermodynamical Weinhold metric, Ruppeiner metric and Quevedo metric, respectively and we find that the divergence of scalar curvature is related to the divergence of specific heat with fixed chemical potential in the Weinhold metric and Ruppeiner metric, while in the Quevedo metric the divergence of scalar curvature is related to the divergence of specific heat with fixed number of colors and the vanishing of the specific heat with fixed chemical potential.
AUAARHUS UNIVERSITY Adding of attachments Financial Control
, and the picture file from this scan must be saved (on a PC or server) before the file is added to the expense sheet. Important: Attachments must be saved in PDF or TIF format. If the attachment is not added in one address or save the picture file on your PC or a server. Open the file and save it on your PC #12;AUAARHUS
Yield Stress Materials in Soft Condensed Matter
Daniel Bonn; Jose Paredes; Morton M. Denn; Ludovic Berthier; Thibaut Divoux; Sébastien Manneville
2015-02-18T23:59:59.000Z
We present a comprehensive review of the physical behavior of yield stress materials in soft condensed matter, which encompasses a broad range of soft materials from colloidal assemblies and gels to emulsions and non-Brownian suspensions. All these disordered materials display a nonlinear response to an external mechanical forcing, which results from the existence of a finite force threshold for flow to occur, the yield stress. We discuss both the physical origin and the rheological consequences associated with this nonlinear behavior. We give an overview of the different experimental techniques developed to measure the yield stress. We discuss extensively the recent progress concerning a microscopic description of the flow dynamics of yield stress materials, emphasizing in particular the role played by relaxation timescales, the interplay between shear flow and aging behavior, the existence of inhomogeneous shear flows and shear bands, wall slip, and non-local effects in confined geometries. We finally review the status of modeling of the shear rheology of yield stress materials in the framework of continuum mechanics.
QCD Condensates and Holographic Wilson Loops for Asymptotically AdS Spaces
Quevedo, R. Carcasses [Instituto Balseiro, Centro Atomico Bariloche, 8400 San Carlos de Bariloche (Argentina); CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Goity, Jose L. [Hampton University, Hampton, VA 23668 (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Trinchero, Roberto C. [Instituto Balseiro, Centro Atomico Bariloche, 8400 San Carlos de Bariloche (Argentina); CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina)
2014-02-01T23:59:59.000Z
The minimization of the Nambu-Goto (NG) action for a surface whose contour defines a circular Wilson loop of radius a placed at a finite value of the coordinate orthogonal to the border is considered. This is done for asymptotically AdS spaces. The condensates of dimension n = 2, 4, 6, 8, and 10 are calculated in terms of the coefficients in the expansion in powers of the radius a of the on-shell subtracted NG action for small a->0. The subtraction employed is such that it presents no conflict with conformal invariance in the AdS case and need not introduce an additional infrared scale for the case of confining geometries. It is shown that the UV value of the gluon condensates is universal in the sense that it only depends on the first coefficients of the difference with the AdS case.
The SU(1|2) and SU(2|2) Sectors from Superstrings in AdS5 x S5
Shijong Ryang
2006-04-03T23:59:59.000Z
For the \\kappa-symmetry gauge fixed superstring action in AdS_5 x S^5 we consider the fermionic fluctuations over a circular bosonic string background with two angular momenta and two winding numbers in S^5. The SU(2)-type redefinitions of fermionic fields and the first-string limit generate a truncated fermionic action for the SU(1|2) sector. It is expressed in a two-dimensional Lorentz-invariant form of a massive Dirac fermion and the plane-wave spectrum for the fermionic excitations is derived. The fermionic spectrum for the SU(2|2) sector is also analyzed.
Characterizing the Interaction Between Routing and MAC Protocols in Ad-Hoc Networks
Barrett, C. L. (Christopher L.); Drozda, M. (Martin); Marathe, A. (Achla); Marathe, M. V. (Madhav V.)
2002-01-01T23:59:59.000Z
We empirically study the effect of mobility on the performance of protocols designed for wireless ad-hoc networks. An important objective is to study the interaction of the Routing and MAC layer protocols under different mobility parameters. We use three basic mobility models: grid mobility model, random waypoint model, and exponential correlated random model. The performance of protocols is measured in terms of (i) latency, (ii) throughput, (iii) number of packets received, (iv) long term fairness and (v) number of control packets at the MAC and routing layer level. Three different commonly studied routing protocols are used: AODV, DSR and LAR1. Similarly three well known MAC protocols are used: MACA, 802.1 1 and CSMA. Our main contribution is simulation based experiments coupled with rigorous statistical analysis to characterize the interaction of MAC layer protocols with routing layer protocols in ad-hoc networks. From the results, we can conclude the following: e No single MAC or Routing protocol dominated the other protocols in their class. Probably more interestingly, no MAURouting protocol combination was better than other combinations over all scenarios and response variables. 0 In general, it is not meaningful to speak about a MAC or a routing protocol in isolation. Presence of interaction leads to trade-offs between the amount of control packets generated by each layer. The results raise the possibility of improving the performance of a particular MAC layer protocol by using a cleverly designed routing protocol or vice-versa. Thus in order to improve the performanceof a communication network, it is important to study the entire protocol stack as a single algorithmic construct; optimizing individual layers in the seven layer OS1 stack will not yield performance improvements beyond a point. A methodological contribution of this paper is the use of statistical methods such as analysis of variance (ANOVA), to characterize the interaction between the protocols, mobility patterns and speed. Such methods allow us to analyze complicated experiments with large input space in a systematic manner.
AdS/QCD and Applications of Light-Front Holography
Brodsky, Stanley J.; /SLAC /Southern Denmark U., CP3-Origins; Cao, Fu-Guang; /Massey U.; de Teramond, Guy F.; /Costa Rica U.
2012-02-16T23:59:59.000Z
Light-Front Holography leads to a rigorous connection between hadronic amplitudes in a higher dimensional anti-de Sitter (AdS) space and frame-independent light-front wavefunctions of hadrons in 3 + 1 physical space-time, thus providing a compelling physical interpretation of the AdS/CFT correspondence principle and AdS/QCD, a useful framework which describes the correspondence between theories in a modified AdS5 background and confining field theories in physical space-time. To a first semiclassical approximation, where quantum loops and quark masses are not included, this approach leads to a single-variable light-front Schroedinger equation which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The coordinate z in AdS space is uniquely identified with a Lorentz-invariant coordinate {zeta} which measures the separation of the constituents within a hadron at equal light-front time. The internal structure of hadrons is explicitly introduced and the angular momentum of the constituents plays a key role. We give an overview of the light-front holographic approach to strongly coupled QCD. In particular, we study the photon-to-meson transition form factors (TFFs) F{sub M{gamma}}(Q{sup 2}) for {gamma}{gamma}* {yields} M using light-front holographic methods. The results for the TFFs for the {eta} and {eta}' mesons are also presented. Some novel features of QCD are discussed, including the consequences of confinement for quark and gluon condensates. A method for computing the hadronization of quark and gluon jets at the amplitude level is outlined.
Thermoelectric Generators 1. Thermoelectric generator
Lee, Ho Sung
1 Thermoelectric Generators HoSung Lee 1. Thermoelectric generator 1.1 Basic Equations In 1821 effects are called the thermoelectric effects. The mechanisms of thermoelectricity were not understood. Cold Hot I - -- - - - - -- Figure 1 Electron concentration in a thermoelectric material. #12;2 A large
Bonus Symmetries of N=4 Super-Yang-Mills Correlation Functions via AdS Duality
Kenneth Intriligator
1999-05-03T23:59:59.000Z
General conjectures about the SL(2,Z) modular transformation properties of N=4 super-Yang-Mills correlation functions are presented. It is shown how these modular transformation properties arise from the conjectured duality with IIB string theory on AdS_5 x S^5. We discuss in detail a prediction of the AdS duality: that N=4 field theory, in an appropriate limit, must exhibit bonus symmetries, corresponding to the enhanced symmetries of IIB string theory in its supergravity limit.
Scintillator yields glimpse of elusive solar neutrinos
Smart, Ashley G.
2014-11-01T23:59:59.000Z
The low-energy neutrinos are byproducts of the first reaction in a chain that generates 99% of the Sun’s energy.
Ecosystem Viable Yields Michel De Lara
Ecosystem Viable Yields Michel De Lara Eladio Oca~na Ricardo Oliveros-Ramos Jorge Tam April 21- cation of the ecosystem approach by 2010. However, at the same Summit, the signatory States undertook ecosystemic dimension, since MSY is computed species by species, on the basis of a monospecific model
Ecosystem Viable Yields Michel De Lara
Paris-Sud XI, Université de
Ecosystem Viable Yields Michel De Lara Eladio Oca~na Ricardo Oliveros-Ramos Jorge Tam November the appli- cation of the ecosystem approach by 2010. However, at the same Summit, the signatory States without ecosystemic dimension, since MSY is computed species by species, on the basis of a monospecific
Comparison of oilseed yields: a preliminary review
Duke, J.A. (Economic Botany Lab., Beltsville, MD); Bagby, M.O.
1982-01-01T23:59:59.000Z
It was assumed that for most oilseed crops, 90% of the oil yield might be considered as profit. To compare oil seeds, pertinent portions of the yield and energy paragraphs from a summary published by Dr. Duke for DOE Grant No. 59-2246-1-6-054-0 with Dr. Bagby as ADODR were reproduced. The seed yields ranged from 200 to 14,000 kg/ha, the low one too low to consider and the high one suspiciously high. The yield of 14,000 kg oil per hectare is equivalent to more than 30 barrels of oil per hectare. The energy species included ambrette, tung-oil tree, cashew, wood-oil tree, mu-oil tree, peanut, mustard greens; rape, colza; black mustard, turnip, safflower, colocynth, coconut, crambe, African oil palm, soybean, cotton, sunflower, Eastern black walnut, Engligh walnut, meadow foam, flax, macadamia nuts, opium poppy, perilla, almond, castorbean, Chinese tallow tree, sesame, jojoba, yellow mustard, stokes' aster, and Zanzibar oilvine. 1 table. (DP)
Computing and Using Metrics in the ADS
Henneken, Edwin A; Kurtz, Michael J; Grant, Carolyn S; Thompson, Donna; Luker, Jay; Chyla, Roman; Holachek, Alexandra; Murray, Stephen S
2014-01-01T23:59:59.000Z
Finding measures for research impact, be it for individuals, institutions, instruments or projects, has gained a lot of popularity. More papers than ever are being written on new impact measures, and problems with existing measures are being pointed out on a regular basis. Funding agencies require impact statistics in their reports, job candidates incorporate them in their resumes, and publication metrics have even been used in at least one recent court case. To support this need for research impact indicators, the SAO/NASA Astrophysics Data System (ADS) has developed a service which provides a broad overview of various impact measures. In this presentation we discuss how the ADS can be used to quench the thirst for impact measures. We will also discuss a couple of the lesser known indicators in the metrics overview and the main issues to be aware of when compiling publication-based metrics in the ADS, namely author name ambiguity and citation incompleteness.
Mass production of multi-wall carbon nanotubes by metal dusting process with high yield
Ghorbani, H. [School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Narmak, Tehran (Iran, Islamic Republic of)] [School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Narmak, Tehran (Iran, Islamic Republic of); Rashidi, A.M., E-mail: Rashidiam@ripi.ir [Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, P.O. Box 14665-1998, Tehran (Iran, Islamic Republic of); Rastegari, S.; Mirdamadi, S. [School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Narmak, Tehran (Iran, Islamic Republic of)] [School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Narmak, Tehran (Iran, Islamic Republic of); Alaei, M. [Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, P.O. Box 14665-1998, Tehran (Iran, Islamic Republic of)] [Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, P.O. Box 14665-1998, Tehran (Iran, Islamic Republic of)
2011-05-15T23:59:59.000Z
Research highlights: {yields} Synthesis of carbon nanotubes over Fe-Ni nanoparticles supported alloy 304L. {yields} Production of carbon nanotubes with high yield (700-1000%) and low cost catalyst. {yields} Optimum growth condition is CO/H{sub 2} = 1/1, 100 cm{sup 3}/min, at 620 {sup o}C under long term repetitive thermal cycling. {yields} Possibility of the mass production by metal dusting process with low cost. -- Abstract: Carbon nanotube materials were synthesized over Fe-Ni nanoparticles generated during disintegration of the surface of alloy 304L under metal dusting environment. The metal dusting condition was simulated and optimized through exposing stainless steel samples during long term repetitive thermal cycling in CO/H{sub 2} = 1/1, total gas flow rate 100 cm{sup 3}/min, at 620 {sup o}C for 300 h. After reaction, surface morphology of the samples and also carbonaceous deposition which had grown on sample surfaces were examined by stereoscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Results revealed that multi-wall carbon nanotubes could be formed over nanocatalyst generated on the alloy surface by exploiting metal dusting process. By optimization of reaction parameters the yields of carbon nanotube materials obtained were 700-1000%. Also it has been shown herein that the amount of carbon nanotube materials remarkably increases when the reaction time is extended up to 300 h, indicating a possibility of the mass production by this easy method.
Building America Expert Meeting: Key Innovations for Adding Energy...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Key Innovations for Adding Energy Efficiency to Maintenance Projects Building America Expert Meeting: Key Innovations for Adding Energy Efficiency to Maintenance Projects This...
Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks
Tan, Choo Chin
2013-01-01T23:59:59.000Z
multicasting in energy-constrained wireless networks,” IEEEminimum-energy multicasting in wireless ad hoc networks,”minimum-energy multicasting in wireless ad hoc networks,” in
Addendum Added to Innovative Demonstration of Geothermal Energy...
Office of Environmental Management (EM)
Addendum Added to Innovative Demonstration of Geothermal Energy Production FOA Addendum Added to Innovative Demonstration of Geothermal Energy Production FOA July 2, 2010 - 2:13pm...
Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks
Tan, Choo Chin
2013-01-01T23:59:59.000Z
organization wireless networks and wireless mobile ad-hocfor heterogeneous wireless network”, in Proc. of IEEER. Khalaf, “Ad hoc wireless networks with mobile backbones,”
Multi-Spin Strings in AdS_4*CP^3 and its ?-deformation
Jun-Bao Wu
2013-05-31T23:59:59.000Z
In this paper, we study the multi-spin string solutions in AdS_4*CP^3 and its \\beta-deformation with real \\beta. We give various explicit solutions after some general studies. Conserved charges are computed for these explicit solutions.
Killing spinors, the adS black hole and I(ISO(2,1)) gravity
R. B. Mann; G. Papadopoulos
1996-06-12T23:59:59.000Z
We construct a supersymmetric extension of the $I\\big(ISO(2,1)\\big)$ Chern-Simons gravity and show that certain particle-like solutions and the adS black-hole solution of this theory are supersymmetric.
S-matrix for strings on $\\eta$-deformed AdS5 x S5
Arutyunov, Gleb; Frolov, Sergey
2014-01-01T23:59:59.000Z
We determine the bosonic part of the superstring sigma model Lagrangian on $\\eta$-deformed AdS5 x S5, and use it to compute the perturbative world-sheet scattering matrix of bosonic particles of the model. We then compare it with the large string tension limit of the q-deformed S-matrix and find exact agreement.
S-matrix for strings on $?$-deformed AdS5 x S5
Gleb Arutyunov; Riccardo Borsato; Sergey Frolov
2014-04-07T23:59:59.000Z
We determine the bosonic part of the superstring sigma model Lagrangian on $\\eta$-deformed AdS5 x S5, and use it to compute the perturbative world-sheet scattering matrix of bosonic particles of the model. We then compare it with the large string tension limit of the q-deformed S-matrix and find exact agreement.
Bound State Transfer Matrix for AdS5 x S5 Superstring
Gleb Arutyunov; Marius de Leeuw; Ryo Suzuki; Alessandro Torrielli
2009-09-17T23:59:59.000Z
We apply the algebraic Bethe ansatz technique to compute the eigenvalues of the transfer matrix constructed from the general bound state S-matrix of the light-cone AdS5 x S5 superstring. This allows us to verify certain conjectures on the quantum characteristic function, and to extend them to the general case.
The Thermal Scalar and Random Walks in AdS3 and BTZ
Thomas G. Mertens; Henri Verschelde; Valentin I. Zakharov
2014-07-08T23:59:59.000Z
We analyze near-Hagedorn thermodynamics of strings in the WZW $AdS_3$ model. We compute the thermal spectrum of all primaries and find the thermal scalar explicitly in the string spectrum using CFT twist techniques. Then we use the link to the Euclidean WZW BTZ black hole and write down the Euclidean BTZ spectrum. We give a Hamiltonian interpretation of the thermal partition function of angular orbifolds where we find a reappearance of discrete states that dominate the partition function. Using these results, we discuss the nature of the thermal scalar in the WZW BTZ model. As a slight generalization of the angular orbifolds, we discuss the $AdS_3$ string gas with a non-zero chemical potential corresponding to angular momentum around the spatial cigar. For this model as well, we determine the thermal spectrum and the Hagedorn temperature as a function of chemical potential. Finally the nature of $\\alpha'$ corrections to the $AdS_3$ thermal scalar action is analyzed and we find the random walk behavior of highly excited strings in this particular $AdS_3$ background.
Holographic Thermalization, stability of AdS, and the Fermi-Pasta-Ulam-Tsingou paradox
Venkat Balasubramanian; Alex Buchel; Stephen R. Green; Luis Lehner; Steven L. Liebling
2014-06-16T23:59:59.000Z
For a real massless scalar field in general relativity with a negative cosmological constant, we uncover a large class of spherically symmetric initial conditions that are close to AdS, but whose numerical evolution does not result in black hole formation. According to the AdS/CFT dictionary, these bulk solutions are dual to states of a strongly interacting boundary CFT that fail to thermalize at late times. Furthermore, as these states are not stationary, they define dynamical CFT configurations that do not equilibrate. We develop a two-timescale perturbative formalism that captures both direct and inverse cascades of energy and agrees with our fully nonlinear evolutions in the appropriate regime. We also show that this formalism admits a large class of quasi-periodic solutions. Finally, we demonstrate a striking parallel between the dynamics of AdS and the classic Fermi-Pasta-Ulam-Tsingou problem.
The Classical Exchange Algebra of AdS5 x S5 String Theory
Marc Magro
2009-01-07T23:59:59.000Z
The classical exchange algebra satisfied by the monodromy matrix of AdS5 x S5 string theory in the Green-Schwarz formulation is determined by using a first-order Hamiltonian formulation and by adding to the Bena-Polchinski-Roiban Lax connection terms proportional to constraints. This enables in particular to show that the conserved charges of this theory are in involution. This result is obtained for a general world-sheet metric. The same exchange algebra is obtained within the pure spinor description of AdS5 x S5 string theory. These results are compared to the one obtained by A. Mikhailov and S. Schaefer-Nameki for the pure spinor formulation.
Laser Seeding Yields High-Power Coherent Terahertz Radiation
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Laser Seeding Yields High-Power Coherent Terahertz Radiation Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Wednesday, 25 April 2007 00:00 Researchers at...
Fragment Yields Calculated in a Time-Dependent Microscopic Theory...
Office of Scientific and Technical Information (OSTI)
Fragment Yields Calculated in a Time-Dependent Microscopic Theory of Fission Citation Details In-Document Search Title: Fragment Yields Calculated in a Time-Dependent Microscopic...
Innovative, Lower Cost Sensors and Controls Yield Better Energy...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Yield Better Energy Efficiency Innovative, Lower Cost Sensors and Controls Yield Better Energy Efficiency March 23, 2015 - 1:05pm Addthis ORNL researchers are experimenting with...
Weber, David J.
Improved Yield and Diverse Finished Bacterial Genomes using Pacific Biosciences RS II SMRT-Cruz, Alvaro Godinez, Luke J. Tallon Institute for Genome Sciences, University of Maryland School of Medicine, effective, and highly accurate platform for generation of complete microbial genome sequences. As early
Baker, John (Walnut Creek, CA); Archer, Daniel E. (Knoxville, TN); Luke, Stanley John (Pleasanton, CA); Decman, Daniel J. (Livermore, CA); White, Gregory K. (Livermore, CA)
2009-06-23T23:59:59.000Z
A tailpulse signal generating/simulating apparatus, system, and method designed to produce electronic pulses which simulate tailpulses produced by a gamma radiation detector, including the pileup effect caused by the characteristic exponential decay of the detector pulses, and the random Poisson distribution pulse timing for radioactive materials. A digital signal process (DSP) is programmed and configured to produce digital values corresponding to pseudo-randomly selected pulse amplitudes and pseudo-randomly selected Poisson timing intervals of the tailpulses. Pulse amplitude values are exponentially decayed while outputting the digital value to a digital to analog converter (DAC). And pulse amplitudes of new pulses are added to decaying pulses to simulate the pileup effect for enhanced realism in the simulation.
Modeling the Yield Curve Statistics Department, Wharton
Stine, Robert A.
makes it interesting and important? Examples Cash Commodities (primarily crude oil) Data analysis. Light crude oil, same date as prior slide 6 2 4 6 8 0.03 0.02 0.01 0.01 2008.16 #12;Questions What 9 2 4 6 8 10 3.0 3.5 4.0 4.5 5.0 5.5 6.0 #12;Plots: Light Crude Yields on crude over same 100 days
Clock synchronization for mobile ad hoc networks
Chandra, Rajan
2013-02-22T23:59:59.000Z
Time Protocol) used in wired networks (e.g. Internet) to Mobile Ad Hoc Networks (MANets). It may also be achieved by developing other algorithms that achieve clock synchronization and may be suitable for MANets. Using the Network Time Protocol (NTP...
Measuring value added characteristics in feeder cattle
Mathews, Crystal Dawn
2009-05-15T23:59:59.000Z
, cyclical effects, lot size, weight, breed type, sex, commingling, fed cattle futures price, and corn price were all found to have an impact on the sale price of feeder cattle. Feeder calves sold through MFA Health Track Beef Alliance and other value added...
Marius de Leeuw; Takuya Matsumoto; Sanefumi Moriyama; Vidas Regelskis; Alessandro Torrielli
2012-04-11T23:59:59.000Z
We discuss special quantum group (secret) symmetries of the integrable system associated to the AdS/CFT correspondence. These symmetries have by now been observed in a variety of forms, including the spectral problem, the boundary scattering problem, n-point amplitudes, the pure-spinor formulation and quantum affine deformations.
de Leeuw, Marius; Moriyama, Sanefumi; Regelskis, Vidas; Torrielli, Alessandro
2012-01-01T23:59:59.000Z
We discuss special quantum group (secret) symmetries of the integrable system associated to the AdS/CFT correspondence. These symmetries have by now been observed in a variety of forms, including the spectral problem, the boundary scattering problem, n-point amplitudes, the pure-spinor formulation and quantum affine deformations.
AD CONTENT CHECK LIST: o Company logo
Zakharov, Vladimir
AD CONTENT CHECK LIST: o Company logo o Address o Contact Info: Phone, web site, and/or e-mail o that will perfectly reflect your image! Acceptable Formats For Logos/Graphics/Photos High-Res (300 dpi) PDF, EPS
Thermoelectric power generator with intermediate loop
Bell, Lon E; Crane, Douglas Todd
2013-05-21T23:59:59.000Z
A thermoelectric power generator is disclosed for use to generate electrical power from heat, typically waste heat. An intermediate heat transfer loop forms a part of the system to permit added control and adjustability in the system. This allows the thermoelectric power generator to more effectively and efficiently generate power in the face of dynamically varying temperatures and heat flux conditions, such as where the heat source is the exhaust of an automobile, or any other heat source with dynamic temperature and heat flux conditions.
Thermoelectric power generator with intermediate loop
Bel,; Lon E. (Altadena, CA); Crane, Douglas Todd (Pasadena, CA)
2009-10-27T23:59:59.000Z
A thermoelectric power generator is disclosed for use to generate electrical power from heat, typically waste heat. An intermediate heat transfer loop forms a part of the system to permit added control and adjustability in the system. This allows the thermoelectric power generator to more effectively and efficiently generate power in the face of dynamically varying temperatures and heat flux conditions, such as where the heat source is the exhaust of an automobile, or any other heat source with dynamic temperature and heat flux conditions.
Effect of inoculation and nitrogen addition on the yield and yield components of soybeans
Gambaudo, Sebastian Pedro
1983-01-01T23:59:59.000Z
this technique resulted in percentages of nitrogen fixed of 37, 27, and 13% for Coker 338, Cobb, and Dowling varieties. Estimates made using total nitrogen by difference were also variable due to variability in the yield data. Percentages of nitrogen fixed... were 20, 19, and 16% for Coker 338, Dowling, and Cobb using this method. A four variable regression model was developed which explained 68% of the variability in grain yield. These factors, in decreasing order of importance, were plant dry weight...
Universality of Long-Distance AdS Physics from the CFT Bootstrap
A. Liam Fitzpatrick; Jared Kaplan; Matthew T. Walters
2014-07-10T23:59:59.000Z
We begin by explicating a recent proof of the cluster decomposition principle in AdS_{d+1} from the CFT_d bootstrap in d > 2. The CFT argument also computes the leading interactions between distant objects in AdS, and we confirm the universal agreement between the CFT bootstrap and AdS gravity in the semi-classical limit. We proceed to study the generalization to 2d CFTs, which requires knowledge of the Virasoro conformal blocks in a lightcone OPE limit. We compute these blocks in a semiclassical, large central charge approximation, and use them to prove a suitably modified theorem. In particular, from the 2d bootstrap we prove the existence of large spin operators with fixed 'anomalous dimensions' indicative of the presence of deficit angles in AdS_3. As we approach the threshold for the BTZ black hole, interpreted as a CFT scaling dimension, the twist spectrum of large spin operators becomes dense. Due to the exchange of the Virasoro identity block, primary states above the BTZ threshold mimic a thermal background for light operators. We derive the BTZ quasi-normal modes, and we use the bootstrap equation to prove that the twist spectrum is dense. Corrections to thermality could be obtained from a more refined computation of the Virasoro conformal blocks.
Training Needs in Louisiana's Value-Added Forest Products Industry
Training Needs in Louisiana's Value-Added Forest Products Industry Richard VloskyRichard Vlosky-Added Training in Other States · The Need for Training in Louisiana-Past Research #12;Industry Development & Adding Value #12;Value-Added Industry Development is Multi-Faceted Marketing Workforce Training Strategic
ANTIHYDROGEN PRODUCTION AND PRECISION SPECTROSCOPY WITH ATHENA/AD-1
M. HOLZSCHEITER; C. AMSLER; ET AL
2000-11-01T23:59:59.000Z
CPT invariance is a fundamental property of quantum field theories in flat space-time. Principal consequences include the predictions that particles and their antiparticles have equal masses and lifetimes, and equal and opposite electric charges and magnetic moments. It also follows that the fine structure, hyperfine structure, and Lamb shifts of matter and antimatter bound systems should be identical. It is proposed to generate new stringent tests of CPT using precision spectroscopy on antihydrogen atoms. An experiment to produce antihydrogen at rest has been approved for running at the Antiproton Decelerator (AD) at CERN. We describe the fundamental features of this experiment and the experimental approach to the first phase of the program, the formation and identification of low energy antihydrogen.
The free energy of N=2 supersymmetric AdS_4 solutions of M-theory
Maxime Gabella; Dario Martelli; Achilleas Passias; James Sparks
2011-07-29T23:59:59.000Z
We show that general N=2 supersymmetric AdS_4 solutions of M-theory with non-zero M2-brane charge admit a canonical contact structure. The free energy of the dual superconformal field theory on S^3 and the scaling dimensions of operators dual to supersymmetric wrapped M5-branes are expressed via AdS/CFT in terms of contact volumes. In particular, this leads to topological and localization formulae for the coefficient of N^{3/2} in the free energy of such solutions.
Covariant propagator in AdS5 x S5 superspace
Peng Dai; Ru-Nan Huang; Warren Siegel
2010-02-10T23:59:59.000Z
We give an explicit superspace propagator for the chiral scalar field strength of 10D IIB supergravity on an AdS5 x S5 background. Because this space is conformally flat, the propagator is very simple, almost identical to that of flat space. We also give an explicit expansion over the Kaluza-Klein modes of S5. The fact that the full propagator is so much simpler suggests that, as in 2D conformal field theory, AdS/CFT calculations would be simpler without a mode expansion.
Can Naked Singularities Yield Gamma Ray Bursts?
H. M. Antia
1998-07-09T23:59:59.000Z
Gamma-ray bursts are believed to be the most luminous objects in the Universe. There has been some suggestion that these arise from quantum processes around naked singularities. The main problem with this suggestion is that all known examples of naked singularities are massless and hence there is effectively no source of energy. It is argued that a globally naked singularity coupled with quantum processes operating within a distance of the order of Planck length of the singularity will probably yield energy burst of the order of M_pc^2\\approx2\\times 10^{16} ergs, where M_p is the Planck mass.
Renormalization, averaging, conservation laws and AdS (in)stability
Ben Craps; Oleg Evnin; Joris Vanhoof
2015-01-19T23:59:59.000Z
We continue our analytic investigations of non-linear spherically symmetric perturbations around the anti-de Sitter background in gravity-scalar field systems, and focus on conservation laws restricting the (perturbatively) slow drift of energy between the different normal modes due to non-linearities. We discover two conservation laws in addition to the energy conservation previously discussed in relation to AdS instability. A similar set of three conservation laws was previously noted for a self-interacting scalar field in a non-dynamical AdS background, and we highlight the similarities of this system to the fully dynamical case of gravitational instability. The nature of these conservation laws is best understood through an appeal to averaging methods which allow one to derive an effective Lagrangian or Hamiltonian description of the slow energy transfer between the normal modes. The conservation laws in question then follow from explicit symmetries of this averaged effective theory.
Extremal Static AdS Black Hole/CFT Correspondence in Gauged Supergravities
H. Lu; Jianwei Mei; C. N. Pope; J. Vazquez-Poritz
2009-01-13T23:59:59.000Z
A recently proposed holographic duality allows the Bekenstein-Hawking entropy of extremal rotating black holes to be calculated microscopically, by applying the Cardy formula to the two-dimensional chiral CFTs associated with certain reparameterisations of azimuthal angular coordinates in the solutions. The central charges are proportional to the angular momenta of the black hole, and so the method degenerates in the case of static (non-rotating) black holes. We show that the method can be extended to encompass such charged static extremal AdS black holes by using consistent Kaluza-Klein sphere reduction ansatze to lift them to exact solutions in the low-energy limits of string theory or M-theory, where the electric charges become reinterpreted as angular momenta associated with internal rotations in the reduction sphere. We illustrate the procedure for the examples of extremal charged static AdS black holes in four, five, six and seven dimensions.
Weak Field Collapse in AdS: Introducing a Charge Density
Elena Caceres; Arnab Kundu; Juan F. Pedraza; Di-Lun Yang
2015-06-29T23:59:59.000Z
We study the effect of a non-vanishing chemical potential on the thermalization time of a strongly coupled large $N_c$ gauge theory in $(2+1)$-dimensions, using a specific bottom-up gravity model in asymptotically AdS space. We first construct a perturbative solution to the gravity-equations, which dynamically interpolates between two AdS black hole backgrounds with different temperatures and chemical potentials, in a perturbative expansion of a bulk neutral scalar field. In the dual field theory, this corresponds to a quench dynamics by a marginal operator, where the corresponding coupling serves as the small parameter in which the perturbation is carried out. The evolution of non-local observables, such as the entanglement entropy, suggests that thermalization time decreases with increasing chemical potential. We also comment on the validity of our perturbative analysis.
Srinivasan-Rao, Triveni (Shoreham, NY)
2002-01-01T23:59:59.000Z
A photon generator includes an electron gun for emitting an electron beam, a laser for emitting a laser beam, and an interaction ring wherein the laser beam repetitively collides with the electron beam for emitting a high energy photon beam therefrom in the exemplary form of x-rays. The interaction ring is a closed loop, sized and configured for circulating the electron beam with a period substantially equal to the period of the laser beam pulses for effecting repetitive collisions.
New ${\\cal N} = 1$ supersymmetric $AdS_5$ backgrounds in Type IIA supergravity
Konstadinos Sfetsos; Daniel C. Thompson
2014-08-27T23:59:59.000Z
We present a family of N=1 supersymmetric backgrounds in type-IIA supergravity and their lifts to eleven-dimensional supergravity. These are of the form $AdS_5 \\times X^5$ and are characterised by an $SU(2)$ structure. The internal space, $X^5$, is obtained from the known Sasaki-Einstein manifolds, $Y^{p,q}$, via an application of non-Abelian T-duality.
Perturbative calculation of quasinormal modes of AdS Schwarzschild black holes
Musiri, Suphot; Ness, Scott; Siopsis, George [Department of Physics, Srinakharinwirot University, Bangkok 10110 (Thailand); Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)
2006-03-15T23:59:59.000Z
We calculate analytically quasinormal modes of AdS Schwarzschild black holes including first-order corrections. We consider massive scalar, gravitational and electromagnetic perturbations. Our results are in good agreement with numerical calculations. In the case of electromagnetic perturbations, ours is the first calculation to provide an analytic expression for quasinormal frequencies, because the effective potential vanishes at zeroth order. We show that the first-order correction is logarithmic.
A new holographic limit of AdS5 x S5
Machiko Hatsuda; Warren Siegel
2003-02-06T23:59:59.000Z
We re-examine the projective lightcone limit of the gauge-invariant Green-Schwarz action on 5D anti-de Sitter x the five-sphere. It implies the usual holography for AdS5, but also (a complex) one for S5. The result is N=4 projective superspace, which unlike N=4 harmonic superspace can describe N=4 super Yang-Mills off shell.
John H. Schwarz
2009-07-28T23:59:59.000Z
The study of AdS/CFT (or gauge/gravity) duality has been one of the most active and illuminating areas of research in string theory over the past decade. The scope of its relevance and the insights it is providing seem to be ever expanding. In this talk I briefly describe some of the attempts to explore how the duality works for maximally supersymmetric systems.
ARM KAZR-ARSCL Value Added Product
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
Jensen, Michael
The Ka-band ARM Zenith Radars (KAZRs) have replaced the long-serving Millimeter Cloud Radars, or MMCRs. Accordingly, the primary MMCR Value Added Product (VAP), the Active Remote Sensing of CLouds (ARSCL) product, is being replaced by a KAZR-based version, the KAZR-ARSCL VAP. KAZR-ARSCL provides cloud boundaries and best-estimate time-height fields of radar moments.
ARM KAZR-ARSCL Value Added Product
Jensen, Michael
2012-09-28T23:59:59.000Z
The Ka-band ARM Zenith Radars (KAZRs) have replaced the long-serving Millimeter Cloud Radars, or MMCRs. Accordingly, the primary MMCR Value Added Product (VAP), the Active Remote Sensing of CLouds (ARSCL) product, is being replaced by a KAZR-based version, the KAZR-ARSCL VAP. KAZR-ARSCL provides cloud boundaries and best-estimate time-height fields of radar moments.
Fermilab Today | Classified Ads | Archive - 2015
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Adding coal dust to coal batch
V.S. Shved; A.V.Berezin [OAO Koks, Kemerovo (Russian Federation)
2009-05-15T23:59:59.000Z
The granulometric composition of coke dust from the dry-slaking machine is determined. The influence of additions of 3-7% coke dust on the quality of industrial coking batch and the coke obtained by box coking is estimated. Adding 1% coke dust to coking batch does not markedly change the coke quality. Industrial equipment for the supply of dry-slaking dust to the batch is described.
Variations of 14-C around AD 775 and AD 1795 - due to solar activity
Neuhaeuser, Ralph
2015-01-01T23:59:59.000Z
The motivation for our study is the disputed cause for the strong variation of 14-C around AD 775. Our method is to compare the 14-C variation around AD 775 with other periods of strong variability. Our results are: (a) We see three periods, where 14-C varied over 200 yr in a special way showing a certain pattern of strong secular variation: after a Grand Minimum with strongly increasing 14-C, there is a series of strong short-term drop(s), rise(s), and again drop(s) within 60 yr, ending up to 200 yr after the start of the Grand Minimum. These three periods include the strong rises around BC 671, AD 775, and AD 1795. (b) We show with several solar activity proxies (radioisotopes, sunspots, and aurorae) for the AD 770s and 1790s that such intense rapid 14-C increases can be explained by strong rapid decreases in solar activity and, hence, wind, so that the decrease in solar modulation potential leads to an increase in radioisotope production. (c) The strong rises around AD 775 and 1795 are due to three effects...
Entropy of near-extremal black holes in AdS5
Simon, Joan; Balasubramanian, Vijay; de Boer, Jan; Jejjala, Vishnu; Simon, Joan
2007-07-24T23:59:59.000Z
We construct the microstates of near-extremal black holes in AdS_5 x S5 as gases of defects distributed in heavy BPS operators in the dual SU(N) Yang-Mills theory. These defects describe open strings on spherical D3-branes in the S5, and we show that they dominate the entropy by directly enumerating them and comparing the results with a partition sum calculation. We display new decoupling limits in which the field theory of the lightest open strings on the D-branes becomes dual to a near-horizon region of the black hole geometry. In the single-charge black hole we find evidence for an infrared duality between SU(N) Yang-Mills theories that exchanges the rank of the gauge group with an R-charge. In the two-charge case (where pairs of branes intersect on a line), the decoupled geometry includes an AdS_3 factor with a two-dimensional CFT dual. The degeneracy in this CFT accounts for the black hole entropy. In the three-charge case (where triples of branes intersect at a point), the decoupled geometry contains an AdS_2 factor. Below a certain critical mass, the two-charge system displays solutions with naked timelike singularities even though they do not violate a BPS bound. We suggest a string theoretic resolution of these singularities.
Pigni, Marco T [ORNL; Francis, Matthew W [ORNL; Gauld, Ian C [ORNL
2015-01-01T23:59:59.000Z
A recent implementation of ENDF/B-VII. independent fission product yields and nuclear decay data identified inconsistencies in the data caused by the use of updated nuclear scheme in the decay sub-library that is not reflected in legacy fission product yield data. Recent changes in the decay data sub-library, particularly the delayed neutron branching fractions, result in calculated fission product concentrations that are incompatible with the cumulative fission yields in the library, and also with experimental measurements. A comprehensive set of independent fission product yields was generated for thermal and fission spectrum neutron induced fission for 235,238U and 239,241Pu in order to provide a preliminary assessment of the updated fission product yield data consistency. These updated independent fission product yields were utilized in the ORIGEN code to evaluate the calculated fission product inventories with experimentally measured inventories, with particular attention given to the noble gases. An important outcome of this work is the development of fission product yield covariance data necessary for fission product uncertainty quantification. The evaluation methodology combines a sequential Bayesian method to guarantee consistency between independent and cumulative yields along with the physical constraints on the independent yields. This work was motivated to improve the performance of the ENDF/B-VII.1 library in the case of stable and long-lived cumulative yields due to the inconsistency of ENDF/B-VII.1 fission p;roduct yield and decay data sub-libraries. The revised fission product yields and the new covariance data are proposed as a revision to the fission yield data currently in ENDF/B-VII.1.
CP violation and the fourth generation
Eilam, Gad [Department of Physics, Technion, Israel Institute of Technology, Haifa, 32000 (Israel); Melic, Blazenka [Theoretical Physics Division, Rudjer Boskovic Institute, Bijenicka 54, HR -10002 Zagreb (Croatia); Trampetic, Josip [Rudjer Boskovic Institute, Bijenicka 54, HR-10002 Zagreb (Croatia)
2009-12-01T23:59:59.000Z
Within the standard model with the 4th generation quarks b{sup '} and t{sup '} we have analyzed CP-violating flavor changing neutral current processes t{yields}cX, b{sup '}{yields}sX, b{sup '}{yields}bX, t{sup '}{yields}cX, and t{sup '}{yields}tX, with X=H,Z,{gamma},g, by constructing and employing a global, unique fit for the 4th generation mass mixing matrix (CKM4) at 300{<=}m{sub t{sup '}}{<=}700 GeV. All quantities appearing in the CKM4 were subject to our fitting procedure. We have found that our fit produces the following CP partial rate asymmetry dominance: a{sub CP}(b{sup '}{yields}s(H,Z;{gamma},g)){approx_equal}(94,62;47,41)%, at m{sub t{sup '}}{approx_equal}300,350 GeV, respectively. From the experimental point of view the best decay mode, out of the above four, is certainly b{sup '}{yields}s{gamma}, due to the presence of the high energy single photon in the final state. We have also obtained relatively large asymmetry a{sub CP}(t{yields}cg){approx_equal}(8-18)% for t{sup '} running in the loops. There are fair chances that the 4th generation quarks will be discovered at LHC and that some of their decay rates will be measured. If b{sup '} and t{sup '} exist at energies we assumed, with well executed tagging, large a{sub CP} could be found too.
Effect of row spacing on yield and yield components of winter wheat cultivars
Peters, Ross Jay
1977-01-01T23:59:59.000Z
was found at McGrego~ for this trait. Culms per m were increased by 2 decreased row width at all locations and in all cultivars except 'Coker 68-15' and 'TAM N-101' at McGregor. These cultivars decreased in culm number. Five hundred seed weight... width on cereals. He noted that reducing row width generally increased yields, particularly at high population levels. While culms per unit area behaved in a similar manner, data on other yield components were inconclusive or not mentioned. Holliday...
A calibration procedure to improve global rice yield simulations with EPIC
Xiong, Wei; Balkovic, Juraj; van der Velde, M.; Zhang, Xuesong; Izaurralde, Roberto C.; Skalsky, Rastislav; Lin, Erda; Mueller, Nathan; Obersteiner, Michael
2014-02-01T23:59:59.000Z
Crop models are increasingly used to assess impacts of climate change/variability and management practices on productivity and environmental performance of alternative cropping systems. Calibration is an important procedure to improve reliability of model simulations, especially for large area applications. However, global-scale crop model calibration has rarely been exercised due to limited data availability and expensive computing cost. Here we present a simple approach to calibrate Environmental Policy Integrated Climate (EPIC) model for a global implementation of rice. We identify four parameters (potential heat unit – PHU, planting density – PD, harvest index – HI, and biomass energy ratio – BER) and calibrate them regionally to capture the spatial pattern of reported rice yield in 2000. Model performance is assessed by comparing simulated outputs with independent FAO national data. The comparison demonstrates that the global calibration scheme performs satisfactorily in reproducing the spatial pattern of rice yield, particularly in main rice production areas. Spatial agreement increases substantially when more parameters are selected and calibrated, but with varying efficiencies. Among the parameters, PHU and HI exhibit the highest efficiencies in increasing the spatial agreement. Simulations with different calibration strategies generate a pronounced discrepancy of 5–35% in mean yields across latitude bands, and a small to moderate difference in estimated yield variability and yield changing trend for the period of 1981–2000. Present calibration has little effects in improving simulated yield variability and trends at both regional and global levels, suggesting further works are needed to reproduce temporal variability of reported yields. This study highlights the importance of crop models’ calibration, and presents the possibility of a transparent and consistent up scaling approach for global crop simulations given current availability of global databases of weather, soil, crop calendar, fertilizer and irrigation management information, and reported yield.
Ad Lucem: Modeling Market Transformation Pathways Workshop
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 RankShale_Gas.pdfService on the TargetFY12 DOE -NAT IONA L S47.1 (June 2004) 1June|AD LUCEM ... TOWARD THE
Coal liquefaction process with increased naphtha yields
Ryan, Daniel F. (Friendswood, TX)
1986-01-01T23:59:59.000Z
An improved process for liquefying solid carbonaceous materials wherein the solid carbonaceous material is slurried with a suitable solvent and then subjected to liquefaction at elevated temperature and pressure to produce a normally gaseous product, a normally liquid product and a normally solid product. The normally liquid product is further separated into a naphtha boiling range product, a solvent boiling range product and a vacuum gas-oil boiling range product. At least a portion of the solvent boiling-range product and the vacuum gas-oil boiling range product are then combined and passed to a hydrotreater where the mixture is hydrotreated at relatively severe hydrotreating conditions and the liquid product from the hydrotreater then passed to a catalytic cracker. In the catalytic cracker, the hydrotreater effluent is converted partially to a naphtha boiling range product and to a solvent boiling range product. The naphtha boiling range product is added to the naphtha boiling range product from coal liquefaction to thereby significantly increase the production of naphtha boiling range materials. At least a portion of the solvent boiling range product, on the other hand, is separately hydrogenated and used as solvent for the liquefaction. Use of this material as at least a portion of the solvent significantly reduces the amount of saturated materials in said solvent.
Comparative analysis of the secondary electron yield from carbon nanoparticles and pure water medium
Verkhovtsev, Alexey; de Vera, Pablo; Surdutovich, Eugene; Guatelli, Susanna; Korol, Andrei V; Rosenfeld, Anatoly; Solov'yov, Andrey V
2015-01-01T23:59:59.000Z
The production of secondary electrons generated by carbon nanoparticles and pure water medium irradiated by fast protons is studied by means of model approaches and Monte Carlo simulations. It is demonstrated that due to a prominent collective response to an external field, the nanoparticles embedded in the medium enhance the yield of low-energy electrons. The maximal enhancement is observed for electrons in the energy range where plasmons, which are excited in the nanoparticles, play the dominant role. Electron yield from a solid carbon nanoparticle composed of fullerite, a crystalline form of C60 fullerene, is demonstrated to be several times higher than that from liquid water. Decay of plasmon excitations in carbon-based nanosystems thus represents a mechanism of increase of the low-energy electron yield, similar to the case of sensitizing metal nanoparticles. This observation gives a hint for investigation of novel types of sensitizers to be composed of metallic and organic parts.
Holographic formula for the determinant of the scattering operator in thermal AdS
Danilo E. Díaz
2009-08-26T23:59:59.000Z
A 'holographic formula' expressing the functional determinant of the scattering operator in an asymptotically locally anti-de Sitter(ALAdS) space has been proposed in terms of a relative functional determinant of the scalar Laplacian in the bulk. It stems from considerations in AdS/CFT correspondence of a quantum correction to the partition function in the bulk and the corresponding subleading correction at large N on the boundary. In this paper we probe this prediction for a class of quotients of hyperbolic space by a discrete subgroup of isometries. We restrict to the simplest situation of an abelian group where the quotient geometry describes thermal AdS and also the non-spinning BTZ instanton. The bulk computation is explicitly done using the method of images and the answer can be encoded in a (Patterson-)Selberg zeta-function.
On Thermodynamics of AdS Black Holes in Arbitrary Dimensions
A. Belhaj; M. Chabab; H. El Moumni; M. B. Sedra
2012-09-23T23:59:59.000Z
Considering the cosmological constant $\\Lambda$ as a thermodynamic pressure and its conjugate quantity as a thermodynamic volume as proposed in Kubiznak and Mann (2012), we discuss the critical behavior of charged AdS black hole in arbitrary dimensions $d$. In particular, we present a comparative study in terms of the spacetime dimension $d$ and the displacement of critical points controlling the transition between the small and the large black holes. Such behaviors vary nicely in terms of $d$. Among our result in this context consists in showing that the equation of state for a charged RN-AdS black hole predicts an universal number given by $\\frac{2d-5}{4d-8}$. The three dimensional solution is also discussed.
A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator
Waldmann, Ole
2011-01-01T23:59:59.000Z
densities, high atomic fractions, and high power e?cienciesa high atomic species fraction at signi?cantly lower power
A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator
Waldmann, Ole
2011-01-01T23:59:59.000Z
A Permanent-Magnet Microwave Ion Source for a Compact High-A Permanent-Magnet Microwave Ion Source for a Compact High-on the development of a microwave ion source that will be
Estimation of dibaryon (OO) yields at RHIC energies
Zhong-Dao Lu
2002-07-02T23:59:59.000Z
The yields of dibaryon (Omega-Omega) in relativistic heavy ion collisions, especially at RHIC energies, are estimated by statistical model. The yields of hyperon Omega- and the ratio of dibaryon to Omega are also given.
Framework for the determination of yield limits In pharmaceutical operations
Liow, Yuh Han John
2010-01-01T23:59:59.000Z
The manufacturing production of active pharmaceutical ingredients often involve a series of processing stages in which yield limits are prescribed to ensure that the target yield has been achieved for a batch and that the ...
Yield, variance and spatial distribution of electron–hole...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Yield, variance and spatial distribution of electron–hole pairs in CsI. Yield, variance and spatial distribution of electron–hole pairs in CsI. Abstract: A Monte Carlo...
Forest thinning may increase water yield from the Sierra Nevada
Downing, Jim
2015-01-01T23:59:59.000Z
forests tend to yield more water. Further reading: Bales RC,et al. 2011. Forests and Water in the Sierra Nevada: SierraForest thinning may increase water yield from the Sierra
Spot Convenience Yield Models for Energy Michael Ludkovski
Ludkovski, Mike
. This is not true for some commodities, such as electricity. Even for mature markets like crude oil where spot on a continuously compounded basis. Intuitively, the convenience yield corresponds to dividend yield for stocks
Efficient vlsi yield prediction with consideration of partial correlations
Varadan, Sridhar
2009-05-15T23:59:59.000Z
of the yield prediction problem (thus making it less time complex) without affecting the accuracy in yield. The efficiency of these two approaches is measured by comparing with the results obtained from Monte Carlo simulations. Compared to previous work...
Dynamic address allocation protocols for Mobile ad hoc networks
Patchipulusu, Praveena
2001-01-01T23:59:59.000Z
Address allocation is an important issue in Mobile ad hoc networks. This thesis proposes solutions to assign unique IP addresses to nodes participating in Mobile ad hoc networks and evaluates the proposed solutions. Address allocation protocols...
Managing On-air Ad Inventory in Broadcast Television
Bollapragada, Srinivas; Mallik, Suman
2008-01-01T23:59:59.000Z
Motivated by the experiences of the National Broadcasting Company (NBC), we present an analytical model for managing on-air ad inventory in broadcast television. The ad inventory in this industry is priced based on rating ...
Superconductors for superstrings on AdS_5 x T^{1,1}
Francesco Aprile; Andrea Borghese; Aldo Dector; Diederik Roest; Jorge G. Russo
2012-05-09T23:59:59.000Z
We construct a one-parameter family of five-dimensional N=2 supergravity Lagrangians with an SU(2,1) / U(2) hypermultiplet. For certain values of the parameter, these are argued to describe the dynamics of scalar modes of superstrings on AdS_5 x T^{1,1}, and therefore to be dual to specific chiral primary operators of Klebanov-Witten superconformal field theory. We demonstrate that, below a critical temperature, the thermodynamics is dominated by charged black holes with hair for the scalars that are dual to the operator of lowest conformal dimension 3/2. The system thus enters into a superconducting phase where condenses.
Integrable $?$-deformations: Squashing Coset CFTs and $AdS_5\\times S^5$
Saskia Demulder; Konstantinos Sfetsos; Daniel C. Thompson
2015-04-10T23:59:59.000Z
We examine integrable $\\lambda$-deformations of $SO(n+1)/SO(n)$ coset CFTs and their analytic continuations. We provide an interpretation of the deformation as a squashing of the corresponding coset $\\sigma$-model's target space. We realise the $\\lambda$-deformation for $n=5$ case as a solution to supergravity supported by non-vanishing five-form and dilaton. This interpolates between the coset CFT $SO(4,2)/SO(4,1)\\times SO(6)/SO(5)$ constructed as a gauged WZW model and the non-Abelian T-dual of the $AdS_5\\times S^5$ spacetime.
Transition from AdS universe to DS universe in the BPP model
Wontae Kim; Myungseok Yoon
2007-03-03T23:59:59.000Z
It can be shown that in the BPP model the smooth phase transition from the asymptotically decelerated AdS universe to the asymptotically accelerated DS universe is possible by solving the modified semiclassical equations of motion. This transition comes from noncommutative Poisson algebra, which gives the constant curvature scalars asymptotically. The decelerated expansion of the early universe is due to the negative energy density with the negative pressure induced by quantum back reaction, and the accelerated late-time universe comes from the positive energy and the negative pressure which behave like dark energy source in recent cosmological models.
On Heat Properties of AdS Black Holes in Higher Dimensions
A. Belhaj; M. Chabab; H. EL Moumni; K. Masmar; M. B. Sedra; A. Segui
2015-07-01T23:59:59.000Z
We investigate the heat properties of AdS Black Holes in higher dimensions. We consider the study of the corresponding thermodynamical properties including the heat capacity explored in the determination of the black hole stability. In particular, we compute the heat latent. To overcome the instability problem, the Maxwell construction, in the (T,S)-plane, is elaborated. This method is used to modify the the Hawking-Page phase structure by removing the negative heat capacity regions. Then, we discuss the thermodynamic cycle and the heat engines using the way based on the extraction of the work from a black hole solution.
Aspects of Axion Phenomenology in a slice of AdS_5
Thomas Flacke; David Maybury
2006-12-11T23:59:59.000Z
Motivated by multi-throat considerations, we study the phenomenological implications of a bulk axion in a slice of AdS_5 with a large extra dimension: k~0.01 eV, kR > 1. In particular, we compare axion physics with a warped geometry to axions in flat compactifications. As in flat compactification scenarios, we find that the mass of the axion can become independent from the underlying Peccei-Quinn scale. Surprisingly, we find that in warped extra dimensions the axion's invisibility, cosmological viability, and basic phenomenology remain essentially unaltered in comparison to axions in flat compactifications.
AdS/QCD at finite density and temperature
Kim, Y., E-mail: ykim@apctp.org [Pohang University of Science and Technology, Asia Pacific Center for Theoretical Physics and Department of Physics (Korea, Republic of)
2012-07-15T23:59:59.000Z
We review some basics of AdS/QCD following a non-standard path and list a few results from AdS/QCD or holographic QCD. The non-standard path here is to use the analogy of the way one obtains an effective model of QCD like linear sigma model and the procedure to construct an AdS/QCD model based on the AdS/CFT dictionary.
Hackemack, Michael Wayne
2013-04-15T23:59:59.000Z
, for generating individual fission event result channels and analyzing their specific response in the fuel. We utilized the nuclear reaction simulation tool, TALYS, to generate energy-dependent fission fragment yield distributions for different fissile/fissionable...
AUAARHUS UNIVERSITY Adding a bonus card AU Finance and Planning
AUAARHUS UNIVERSITY Adding a bonus card AU Finance and Planning Financial Management 12/02/2013 Page 1 of 6 Guide to adding a bonus card in CWT's online system Log on to CWT: https://sso.carlsonwagonlit.com/login.do Type in your username and password Click on "Sign on" #12;AUAARHUS UNIVERSITY Adding a bonus card AU
LEARNING-BASED ROUTE MANAGEMENT IN WIRELESS AD HOC NETWORKS
Littman, Michael L.
and Wade Trappe The nodes in a wireless ad hoc network must act as routers in a self-configuring network to shortest-path routing protocols for managing router congestion and noise in wireless ad hoc networks. iiLEARNING-BASED ROUTE MANAGEMENT IN WIRELESS AD HOC NETWORKS BY BRIAN RUSSELL A dissertation
Low-Interference Topology Control for Wireless Ad Hoc Networks
Li, Xiang-Yang
wireless ad hoc networks. Many aspects of the networking will affect the energy consumption of the wireless may cause larger energy consumption. In wireless ad hoc networks, each wireless device can selectively1 Low-Interference Topology Control for Wireless Ad Hoc Networks Kousha Moaveni-Nejad, Xiang
Approximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks
Liang, Weifa
Approximate Minimum-Energy Multicasting in Wireless Ad Hoc Networks Weifa Liang, Senior Member, IEEE Abstract--A wireless ad hoc network consists of mobile nodes that are equipped with energy on energy conservation in wireless ad hoc networks have been conducted. For example, energy efficient
Development of Yield and Tensile Strength Design Curves for Alloy 617
Nancy Lybeck; T. -L. Sham
2013-10-01T23:59:59.000Z
The U.S. Department of Energy Very High Temperature Reactor Program is acquiring data in preparation for developing an Alloy 617 Code Case for inclusion in the nuclear section of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code. A draft code case was previously developed, but effort was suspended before acceptance by ASME. As part of the draft code case effort, a database was compiled of yield and tensile strength data from tests performed in air. Yield strength and tensile strength at temperature are used to set time independent allowable stress for construction materials in B&PV Code, Section III, Subsection NH. The yield and tensile strength data used for the draft code case has been augmented with additional data generated by Idaho National Laboratory and Oak Ridge National Laboratory in the U.S. and CEA in France. The standard ASME Section II procedure for generating yield and tensile strength at temperature is presented, along with alternate methods that accommodate the change in temperature trends seen at high temperatures, resulting in a more consistent design margin over the temperature range of interest.
Fusion yield: Guderley model and Tsallis statistics
Haubold, H J
2010-01-01T23:59:59.000Z
The reaction rate probability integral is extended from Maxwell-Boltzmann approach to a more general approach by using the pathway model introduced by Mathai [Mathai A.M.:2005, A pathway to matrix-variate gamma and normal densities, Linear Algebra and Its Applications}, 396, 317-328]. The extended thermonuclear reaction rate is obtained in closed form via a Meijer's G-function and the so obtained G-function is represented as a solution of a homogeneous linear differential equation. A physical model for the hydrodynamical process in a fusion plasma compressed and laser-driven spherical shock wave is used for evaluating the fusion energy integral by integrating the extended thermonuclear reaction rate integral over the temperature. The result obtained is compared with the standard fusion yield obtained by Haubold and John in 1981.[Haubold, H.J. and John, R.W.:1981, Analytical representation of the thermonuclear reaction rate and fusion energy production in a spherical plasma shock wave, Plasma Physics, 23, 399-...
Optimizing Doppler Surveys for Planet Yield
Bottom, Michael; Johnson, John Asher; Blake, Cullen H
2013-01-01T23:59:59.000Z
One of the most promising methods of discovering nearby, low-mass planets in the habitable zones of stars is the precision radial velocity technique. However, there are many challenges that must be overcome to efficiently detect low-amplitude Doppler signals. This is both due to the required instrumental sensitivity and the limited amount of observing time. In this paper, we examine statistical and instrumental effects on precision radial velocity detection of extrasolar planets, an approach by which we maximize the planet yield in a fixed amount of observing time available on a given telescope. From this perspective, we show that G and K dwarfs observed at 400-600 nm are the best targets for surveys complete down to a given planet mass and out to a specified orbital period. Overall we find that M dwarfs observed at 700-800 nm are the best targets for habitable-zone planets, particularly when including the effects of systematic noise floors. Also, we give quantitative specifications of the instrumental stabil...
Review of AdS/CFT Integrability, Chapter IV.3: N=6 Chern-Simons and Strings on AdS4xCP3
Thomas Klose
2012-03-27T23:59:59.000Z
We review the duality and integrability of N=6 superconformal Chern-Simons theory in three dimensions and IIA superstring theory on the background AdS4xCP3. We introduce both of these models and describe how their degrees of freedom are mapped to excitations of a long-range integrable spin-chain. Finally, we discuss the properties of the Bethe equations, the S-matrix and the algebraic curve that are special to this correspondence and differ from the case of N=4 SYM theory and strings on AdS5xS5.
Emergent IR dual 2d CFTs in charged AdS5 black holes
Jan de Boer; Maria Johnstone; M. M. Sheikh-Jabbari; Joan Simon
2011-12-20T23:59:59.000Z
We study the possible dynamical emergence of IR conformal invariance describing the low energy excitations of near-extremal R-charged global AdS5 black holes. We find interesting behavior especially when we tune parameters in such a way that the relevant extremal black holes have classically vanishing horizon area, i.e. no classical ground-state entropy, and when we combine the low energy limit with a large N limit of the dual gauge theory. We consider both near-BPS and non-BPS regimes and their near horizon limits, emphasize the differences between the local AdS3 throats emerging in either case, and discuss potential dual IR 2d CFTs for each case. We compare our results with the predictions obtained from the Kerr/CFT correspondence, and obtain a natural quantization for the central charge of the near-BPS emergent IR CFT which we interpret in terms of the open strings stretched between giant gravitons.
Shear Viscosity from AdS Born-Infeld Black Holes
Rong-Gen Cai; Ya-Wen Sun
2008-09-23T23:59:59.000Z
We calculate the shear viscosity in the frame of AdS/CFT correspondence for the field theory with a gravity dual of Einstein-Born-Infeld gravity. We find that the ratio of $\\eta/s$ is still the conjectured universal value $1/4\\pi$ at least up to the first order of the Born-Infeld parameter $1/b^2$.
Quartic AdS Interactions in Higher-Spin Gravity from Conformal Field Theory
Bekaert, Xavier; Ponomarev, Dmitry; Sleight, Charlotte
2015-01-01T23:59:59.000Z
Clarifying the locality properties of higher-spin gravity is a pressing task, but notoriously difficult due to the absence of a weakly-coupled flat regime. The simplest non-trivial case where this question can be addressed is the quartic self-interaction of the AdS scalar field present in the higher-spin multiplet. We investigate this issue in the context of the holographic duality between the minimal bosonic higher-spin theory on AdS$_4$ and the free $O\\left(N\\right)$ vector model in three dimensions. In particular, we determine the exact explicit form of the derivative expansion of the bulk scalar quartic vertex. The quartic vertex is obtained from the field theory four-point function of the operator dual to the bulk scalar, by making use of our previous results for the Witten diagrams of higher-spin exchanges. This is facilitated by establishing the conformal block expansions of both the boundary four-point function and the dual bulk Witten diagram amplitudes. We show that the vertex we find satisfies a ge...
Geometric free energy of toric AdS4/CFT3 models
Sangmin Lee; Daisuke Yokoyama
2015-01-22T23:59:59.000Z
We study the supersymmetric free energy of three dimensional Chern-Simons-matter theories holographically dual to AdS$_4$ times toric Sasaki-Einstein seven-manifolds. In the large $N$ limit, we argue that the square of the free energy can be written as a quartic polynomial of trial R-charges. The coefficients of the polynomial are determined geometrically from the toric diagrams. We present the coefficients of the quartic polynomial explicitly for generic toric diagrams with up to 6 vertices, and some particular diagrams with 8 vertices. Decomposing the trial R-charges into mesonic and baryonic variables, and eliminating the baryonic ones, we show that the quartic polynomial reproduces the inverse of the Martelli-Sparks-Yau volume function. On the gravity side, we explore the possibility of using the same quartic polynomial as the prepotential in the AdS gauged supergravity. Comparing Kaluza-Klein gravity and gauged supergravity descriptions, we find perfect agreement in the mesonic sector but some discrepancy in the baryonic sector.
Vacuum densities for a thick brane in AdS spacetime
A. A. Saharian; A. L. Mkhitaryan
2007-10-18T23:59:59.000Z
For a massive scalar field with general curvature coupling parameter we evaluate Wightman function, vacuum expectation values of the field square and the energy-momentum tensor induced by a $Z_{2}$-symmetric brane with finite thickness located on $(D+1)$-dimensional AdS bulk. For the general case of static plane symmetric interior structure the expectation values in the region outside the brane are presented as the sum of free AdS and brane induced parts. For a conformally coupled massless scalar the brane induced part in the vacuum energy-momentum tensor vanishes. In the limit of strong gravitational fields the brane induced parts are exponentially suppressed for points not too close to the brane boundary. As an application of general results a special model is considered in which the geometry inside the brane is a slice of the Minkowski spacetime orbifolded along the direction perpendicular to the brane. For this model the Wightman function, vacuum expectation values of the field square and the energy-momentum tensor inside the brane are evaluated. It is shown that for both minimally and conformally coupled scalar fields the interior vacuum forces acting on the brane boundaries tend to decrease the brane thickness.
Dual Superconformal Symmetry from AdS5 x S5 Superstring Integrability
Niklas Beisert; Riccardo Ricci; Arkady Tseytlin; Martin Wolf
2008-11-17T23:59:59.000Z
We discuss 2d duality transformations in the classical AdS5 x S5 superstring and their effect on the integrable structure. T-duality along four directions in Poincare parametrization of AdS5 maps the bosonic part of the superstring action into itself. On bosonic level, this duality may be understood as a symmetry of the first-order (phase space) system of equations for the coset components of the current. The associated Lax connection is invariant modulo the action of an so(2,4)-automorphism. We then show that this symmetry extends to the full superstring, provided one supplements the transformation of the bosonic components of the current with a transformation on the fermionic ones. At the level of the action, this symmetry can be seen by combining the bosonic duality transformation with a similar one applied to part of the fermionic superstring coordinates. As a result, the full superstring action is mapped into itself, albeit in a different kappa-symmetry gauge. One implication is that the dual model has the same superconformal symmetry group as the original one, and this may be seen as a consequence of the integrability of the superstring. The invariance of the Lax connection under the duality implies a map on the full set of conserved charges that should interchange some of the Noether (local) charges with hidden (non-local) ones and vice versa.
The Start Of Ebullition In Quiescent, Yield-Stress Fluids
Reed, G. R.; Sherwood, David J.; Saez, A. Eduardo
2012-08-30T23:59:59.000Z
Non-Newtonian rheology is typical for the high-level radioactive waste (HLW) slurries processed in the Hanford Tank Waste Treatment and Immobilization Plant (WTP). Hydrogen and other flammable gases are generated in the aqueous phase by radiolytic and chemical reactions. HLW slurries have a capacity for retaining gas characterized by the shear strength holding the bubbles still. The sizes and degassing characteristics of flammable gas bubbles in the HLW slurries expected to be processed by the WTP are important considerations for designing equipment and operating procedures. Slurries become increasingly susceptible to degassing as the bubble concentration increases. This susceptibility and the process of ebullitive bubble enlargement are described here. When disturbed, the fluid undergoes localized flow around neighboring bubbles which are dragged together and coalesce, producing an enlarged bubble. For the conditions considered in this work, bubble size increase is enough to displace the weight required to overcome the fluid shear strength and yield the surroundings. The buoyant bubble ascends and accumulates others within a zone of influence, enlarging by a few orders of magnitude. This process describes how the first bubbles appear on the surface of a 7 Pa shear strength fluid a few seconds after being jarred.
Sen, Sevil
ITA CONFERENCE 1569048773 THREAT MODELLING FOR MOBILE AD HOC AND SENSOR NETWORKS 1 Threat Modelling. Chivers, Olwen Worthington and Pankaj Rohatgi Abstract-- This paper introduces a threat model for ad hoc and mobile ad hoc networks (MANETS). It identifies threat categories, modes of use, and a variety of threats
Aerosol Best Estimate Value-Added Product
Flynn, C; Turner, D; Koontz, A; Chand, D; Sivaraman, C
2012-07-19T23:59:59.000Z
The objective of the Aerosol Best Estimate (AEROSOLBE) value-added product (VAP) is to provide vertical profiles of aerosol extinction, single scatter albedo, asymmetry parameter, and Angstroem exponents for the atmospheric column above the Central Facility at the ARM Southern Great Plains (SGP) site. We expect that AEROSOLBE will provide nearly continuous estimates of aerosol optical properties under a range of conditions (clear, broken clouds, overcast clouds, etc.). The primary requirement of this VAP was to provide an aerosol data set as continuous as possible in both time and height for the Broadband Heating Rate Profile (BBHRP) VAP in order to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Even though BBHRP has been completed, AEROSOLBE results are very valuable for environmental, atmospheric, and climate research.
Weather-based forecasts of California crop yields
Lobell, D B; Cahill, K N; Field, C B
2005-09-26T23:59:59.000Z
Crop yield forecasts provide useful information to a range of users. Yields for several crops in California are currently forecast based on field surveys and farmer interviews, while for many crops official forecasts do not exist. As broad-scale crop yields are largely dependent on weather, measurements from existing meteorological stations have the potential to provide a reliable, timely, and cost-effective means to anticipate crop yields. We developed weather-based models of state-wide yields for 12 major California crops (wine grapes, lettuce, almonds, strawberries, table grapes, hay, oranges, cotton, tomatoes, walnuts, avocados, and pistachios), and tested their accuracy using cross-validation over the 1980-2003 period. Many crops were forecast with high accuracy, as judged by the percent of yield variation explained by the forecast, the number of yields with correctly predicted direction of yield change, or the number of yields with correctly predicted extreme yields. The most successfully modeled crop was almonds, with 81% of yield variance captured by the forecast. Predictions for most crops relied on weather measurements well before harvest time, allowing for lead times that were longer than existing procedures in many cases.
An arbitrary function generator for use with an analog computer
Shanks, John Lee
1956-01-01T23:59:59.000Z
OF THE INDIVIDUAL CIRCUITS Slope and Intercept Circuit Gain of the operational amplifier ~ ~ ~ . 12 Generation of consecutive line segments Amplifiers. Relay Circuit. Use of multi-pole relays Relay amplifier Experimental function generator ~ 14 16 16 21... Lire Segments. ll. Effect of Break Voltage Drift in Diode Function Gene ra to r 12. Effect, o f Break Voltage Dr if t i n Relay Function Generator 13. Gain of the Computer Amplifier 14. Gain of the Adding Amplifier 15. Slope end Intercept Circuit...
Automatic Hypermedia Generation for Ad-hoc Queries on Semi-structured Data
Houben, Geert-Jan
attributes or to show extra ones. The user also enters object selection criteria. We could use a language process. We address important aspects of the software that facilitates the genera- tion process. KEYWORDS for the desired information. Our target applications are collections or libraries of digital (semi
Effect of row spacing on yield and yield components of winter wheat cultivars
Peters, Ross Jay
1977-01-01T23:59:59.000Z
OF SCIENCE August 19I7 Nsj or Subject: Plant Breeding EFFECT OF ROii SPACING GN YIELD AND YLELD GGMPONENFS OF WINIER WHEAT CULTIVARS A Thesis ROSS JAY PETERS (Chairman of Committee of De artme t) p( (Member (Membe r) August 1977 EFFECT OF BC...!A SPACINC ON YL LD AND YLELD C(24PONENJS OF MINTER VREAT CDLTIVABS. (August 19i7) BOSS . TAY PETERS S. S. , Arisona State University Chairman of Adviso"y Commi t tee; Dr. Earl Gilmore Tn 197 ~ six locally adapted winter w! est (Trit'. curn acstiv::m L...
Conformal Transformations and Strings for an Accelerating Quark-Antiquark Pair in AdS3
Shijong Ryang
2014-12-08T23:59:59.000Z
From a simple moving open string solution dual to a moving heavy quark with constant velocity in the Poincare AdS_3 spacetime, we construct an accerlerating open string solution dual to a heavy quark-antiquark pair accelerated in opposite directions by performing the three mappings such as the SL(2,R)_L x SL(2,R)_R isometry transformation, the special conformal transformation and the conformal SO(2,2) transformation. Using the string sigma model action we construct two open string solutions staying in two different regions whose dividing line is associated with the event horizon appeared on the string worldsheet and obtain the accelerating open string solution by gluing two such solutions.
Emerging Non-Anomalous Baryonic Symmetries in the AdS_5/CFT_4 Correspondence
Nessi Benishti
2011-06-06T23:59:59.000Z
We study the breaking of baryonic symmetries in the AdS_5/CFT_4 correspondence for D3 branes at Calabi-Yau three-fold singularities. This leads, for particular VEVs, to the emergence of non-anomalous baryonic symmetries during the renormalization group flow. We claim that these VEVs correspond to critical values of the B-field moduli in the dual supergravity backgrounds. We study in detail the C^3/Z_3 orbifold, the cone over F_0 and the C^3/Z_5 orbifold. For the first two examples, we study the dual supergravity backgrounds that correspond to the breaking of the emerging baryonic symmetries and identify the expected Goldstone bosons and global strings in the infra-red. In doing so we confirm the claim that the emerging symmetries are indeed non-anomalous baryonic symmetries.
The holographic superconductors in higher-dimensional AdS soliton
Chong Oh Lee
2012-07-30T23:59:59.000Z
We explore the behaviors of the holographic superconductors at zero temperature for a charged scalar field coupled to a Maxwell field in higher-dimensional AdS soliton spacetime via analytical way. In the probe limit, we obtain the critical chemical potentials increase linearly as a total dimension $d$ grows up. We find that the critical exponent for condensation operator is obtained as 1/2 independently of $d$, and the charge density is linearly related to the chemical potential near the critical point. Furthermore, we consider a slightly generalized setup the Einstein-Power-Maxwell field theory, and find that the critical exponent for condensation operator is given as $1/(4-2n)$ in terms of a power parameter $n$ of the Power-Maxwell field, and the charge density is proportional to the chemical potential to the power of $1/(2-n)$.
The S-matrix of the AdS5 x S5 superstring
Marius de Leeuw
2010-07-28T23:59:59.000Z
In this article we review the world-sheet scattering theory of strings on AdS 5 x S5. The asymptotic spectrum of this world-sheet theory contains both fundamental particles and bound states of the latter. We explicitly derive the S-matrix that describes scattering of arbitrary bound states. The key feature that enables this derivation is the so-called Yangian symmetry which is related to the centrally extended su(2|2) superalgebra. Subsequently, we study the universal algebraic properties of the found S-matrix. As in many integrable models, the S-matrix plays a key role in the determination of the energy spectrum. In this context, we employ the Bethe ansatz approach to compute the large volume energy spectrum of string bound states.
The Bound State S-Matrix for AdS5 x S5 Superstring
Gleb Arutyunov; Marius de Leeuw; Alessandro Torrielli
2011-08-24T23:59:59.000Z
We determine the S-matrix that describes scattering of arbitrary bound states in the light-cone string theory in AdS5 x S5. The corresponding construction relies on the Yangian symmetry and the superspace formalism for the bound state representations. The basic analytic structure supporting the S-matrix entries turns out to be the hypergeometric function 4F3. We show that for particular bound state numbers it reproduces all the scattering matrices previously obtained in the literature. Our findings should be relevant for the TBA and Luescher approaches to the finite-size spectral problem. They also shed some light on the construction of the universal R-matrix for the centrally-extended psu(2|2) superalgebra.
Semiclassical Strings in Electric and Magnetic Fields Deformed $AdS_5 \\times S^5$ Spacetimes
Wung-Hong Huang
2006-01-06T23:59:59.000Z
We first apply the transformation of mixing azimuthal and internal coordinate or mixing time and internal coordinate to the 11D M-theory with a stack N M2-branes to find the spacetime of a stack of N D2-branes with magnetic or electric flux in 10 D IIA string theory, after the Kaluza-Klein reduction. We then perform the T duality to the spacetime to find the background of a stack of N D3-branes with magnetic or electric flux. In the near-horizon limit the background becomes the magnetic or electric field deformed $AdS_5 \\times S^5$. We adopt an ansatz to find the classical string solution which is rotating in the deformed $S^5$ with three angular momenta in the three rotation planes. The relations between the classical string energy and its angular momenta are found and results show that the external magnetic and electric fluxes will increase the string energy. Therefore, from the AdS/CFT point of view, the corrections of the anomalous dimensions of operators in the dual SYM theory will be positive. We also investigate the small fluctuations in these solutions and discuss the effects of magnetic and electric fields on the stability of these classical rotating string solutions. Finally, we find the possible solutions of string pulsating on the deformed spacetimes and show that the corrections to the anomalous dimensions of operators in the dual SYM theory are non-negative.
Fast Yield-Driven Fracture for Variable Shaped-Beam Mask Andrew B. Kahng, Xu Xu and Alex Zelikovsky
Zelikovsky, Alexander
Fast Yield-Driven Fracture for Variable Shaped-Beam Mask Writing Andrew B. Kahng, Xu Xu and Alex process generation have collectively presented new challenges for current fracture tools, which-dimension errors. Some commercial tools are available for handling the sliver minimization problem in fracture
2D monolayers could yield thinnest solar cells ever
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
have shown how using a different type of material could yield thinner, more lightweight solar panels that provide power densities - watts per kilogram of material - orders of...
Innovative, lower cost sensors and controls yield better energy...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
and controls yield better energy efficiency ORNL researchers are experimenting with additive roll-to-roll manufacturing techniques to develop low-cost wireless sensors....
Weather-based yield forecasts developed for 12 California crops
Lobell, David; Cahill, Kimberly Nicholas; Field, Christopher
2006-01-01T23:59:59.000Z
RESEARCH ARTICLE Weather-based yield forecasts developed fordepend largely on the weather, measurements from existingpredictions. We developed weather-based models of statewide
Increasing Sugar Yields with IL-final-sm
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Ionic Liquid Processing Increasing sugar yields from diverse biomass feedstock with ionic liquid processing and cultivation of renewable ionic liquids Liberating Sugars from...
Robust Diamond-Based RF Switch Yields Enhanced Communication...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Robust Diamond-Based RF Switch Yields Enhanced Communication Capabilities Technology available for licesning: A radio frequency (RF) microelectromechanical system (MEMS) switch...
Structures for Three Membrane Transport Proteins Yield Functional...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Structures for Three Membrane Transport Proteins Yield Functional Insights Print Cells depend on contact with their outside environment in order to thrive. Two examples illustrate...
Solar Decathlon house continues to yield data | ornl.gov
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Solar Decathlon house continues to yield data ORNL, University of Tennessee to continue lessons learned in DOE solar energy competition Courtesy of: UT College of Architecture and...
Strontium and barium iodide high light yield scintillators
Moses, William W; Cherepy, Nerine; Hull, Giulia; Drobshoff, Alexander; Payne, Stephen; van Loef, Edgar; Wilson, Cody; Shah, Kanai; Roy, Utpal N.; Burger, Arnold; Boatner, Lynn; Choong, Woon-Seng; Moses, William
2008-04-18T23:59:59.000Z
Europium-doped strontium and barium iodide are found to be readily growable by the Bridgman method and to produce high scintillation light yields.
Understanding and Managing Generation Y
Wallace, Kevin
2007-12-14T23:59:59.000Z
There are four generations in the workplace today; they consist of the Silent Generation, Baby Boom Generation, Generation X, and Generation Y. Generation Y, being the newest generation, is the least understood generation although marketers...
Risk assessment of severe accident-induced steam generator tube rupture
NONE
1998-03-01T23:59:59.000Z
This report describes the basis, results, and related risk implications of an analysis performed by an ad hoc working group of the U.S. Nuclear Regulatory Commission (NRC) to assess the containment bypass potential attributable to steam generator tube rupture (SGTR) induced by severe accident conditions. The SGTR Severe Accident Working Group, comprised of staff members from the NRC`s Offices of Nuclear Reactor Regulation (NRR) and Nuclear Regulatory Research (RES), undertook the analysis beginning in December 1995 to support a proposed steam generator integrity rule. The work drew upon previous risk and thermal-hydraulic analyses of core damage sequences, with a focus on the Surry plant as a representative example. This analysis yielded new results, however, derived by predicting thermal-hydraulic conditions of selected severe accident scenarios using the SCDAP/RELAP5 computer code, flawed tube failure modeling, and tube failure probability estimates. These results, in terms of containment bypass probability, form the basis for the findings presented in this report. The representative calculation using Surry plant data indicates that some existing plants could be vulnerable to containment bypass resulting from tube failure during severe accidents. To specifically identify the population of plants that may pose a significant bypass risk would require more definitive analysis considering uncertainties in some assumptions and plant- and design-specific variables. 46 refs., 62 figs., 37 tabs.
Money Market Mutual Funds: An Experiement in Ad Hoc Deregulation
Rosen, Kenneth T.; Katz, Lawrence
1981-01-01T23:59:59.000Z
of the market. A full deregulation of the deposit marketsity range. Full deregulation of financial institutions will,periment in ad hoc deregulation. -29- APPENDIX 1 . §Money
Maximizing the throughput of large ad hoc wireless networks
Hua, Yingbo; Huang, Yi; J, Garcia-Luna-Aceves J
2006-01-01T23:59:59.000Z
The transport capacity of wireless networks over fadingimprovement of ad hoc wireless networks using directionalThe capacity of wireless networks,” IEEE Trans. Inform.
Lee, Hyun Ji; Laskin, Alexander; Laskin, Julia; Nizkorodov, Sergey A.
2013-05-10T23:59:59.000Z
Certain biogenic secondary organic aerosols (SOA) become absorbent and fluorescent when exposed to reduced nitrogen compounds such as ammonia, amines and their salts. Fluorescent SOA may potentially be mistaken for biological particles by detection methods relying on fluorescence. This work quantifies the spectral distribution and effective quantum yields of fluorescence of SOA generated from two monoterpenes, limonene and a-pinene, and two different oxidants, ozone (O3) and hydroxyl radical (OH). The SOA was generated in a smog chamber, collected on substrates, and aged by exposure to ~100 ppb ammonia vapor in air saturated with water vapor. Absorption and excitation-emission matrix (EEM) spectra of aqueous extracts of aged and control SOA samples were measured, and the effective absorption coefficients and fluorescence quantum yields (~0.005 for 349 nm excitation) were determined from the data. The strongest fluorescence for the limonene-derived SOA was observed for excitation = 420+- 50 nm and emission = 475 +- 38 nm. The window of the strongest fluorescence shifted to excitation = 320 +- 25 nm and emission = 425 +- 38 nm for the a-pinene-derived SOA. Both regions overlap with the excitation-emission matrix (EEM) spectra of some of the fluorophores found in primary biological aerosols. Our study suggests that, despite the low quantum yield, the aged SOA particles should have sufficient fluorescence intensities to interfere with the fluorescence detection of common bioaerosols.
Feijoo, M.L.; Mestre, F.; Iglesias, A.; Rosenzweig, C. [Univ. de Zaragoza (Spain)
1996-12-31T23:59:59.000Z
The study evaluates the potential effect of climate change on maize production in Spain, combining climate models, a crop productivity model, a decision support system and a yield-response model. The study was carried out for two agricultural regions that include the largest areas of Spain where maize is grown as a high input crop. The paper combines the output from a crop model with different techniques of analysis. The scenarios used in this study were generated from the output of two General Circulation Models (GCMs): the Goddard Institute for Space Studies model (GISS) and the Canadian Climate Change Model (CCCM). The study also includes a preliminary evaluation of the potential changes in monetary returns taking into account the possible variability of grain yields and prices, using mean-Gini stochastic dominance (MGSD). A yield response model was estimated using simulated data from the crop model. Weather variables are included. Typically, temperature and precipitation are the only weather variables included in these models. However, solar radiation is another important climate factor for plant growth and development and were included in the yield response model.
On the short string limit of the folded spinning string in AdS5 x S5
M. Beccaria; A. Tirziu
2008-10-23T23:59:59.000Z
In this paper we generalize the results of arXiv:0806.4758 to non-zero value J of angular momentum in S^5. We compute the 1-loop correction to the energy of the folded spinning string in AdS_5 x S^5 in the particular limit of slow short string approximation. In this limit the string is moving in a near-flat central region of AdS_5 slowly rotating in both AdS_5 and S^5. The one-loop correction should represent the first subleading correction to strong coupling expansion of the anomalous dimension of short gauge theory operators of the form Tr D^S Z^J in the SL(2) sector.
Nonclassicality and decoherence of photon-added squeezed thermal state in thermal environment
Li-Yun Hu; Zhi-Ming Zhang
2011-10-30T23:59:59.000Z
Theoretical analysis is given of nonclassicality and decoherence of the field states generated by adding any number of photons to the squeezed thermal state (STS). Based on the fact that the squeezed number state can be considered as a single-variable Hermite polynomial excited state, the compact expression of the normalization factor is derived, a Legendre polynomial. The nonclassicality is investigated by exploring the sub-Poissonian and negative Wigner function (WF). The results show that the WF of single photon-added STS (PASTS) always has negative values at the phase space center. The decoherence effect on PASTS is examined by the analytical expression of WF. It is found that a longer threshold value of decay time is included in single PASTS than in single-photon subtraction STS.
The effect of magnesium added at C{sub 60}/Rubrene heterointerfaces
Cheng, Chiu-Ping; Lee, Cheng-Wei; Chu, Yu-Ya [Department of Electrophysics, National Chiayi University, Chiayi 60004, Taiwan (China)] [Department of Electrophysics, National Chiayi University, Chiayi 60004, Taiwan (China); Wei, Ching-Hsuan [Department of Material Science, National Chiao-Tung University, Hsinchu 30076, Taiwan (China)] [Department of Material Science, National Chiao-Tung University, Hsinchu 30076, Taiwan (China); Pi, Tun-Wen [National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)] [National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)
2013-12-28T23:59:59.000Z
This study examines the effect of adding magnesium (Mg) at C{sub 60}/rubrene heterointerfaces by using synchrotron-radiation photoemission spectroscopy. The heterointerface was obtained by depositing C{sub 60} on a 4-Å Mg/rubrene surface. The photoemission spectra showed that the added Mg preferentially interacts with and transfers negative charges to C{sub 60}. The interfacial dipole potential was significantly enlarged, as was the separation between the lowest unoccupied molecular orbital of C{sub 60} and the highest occupied molecular orbital of rubrene. The results demonstrate that the addition of Mg should be an effective method for improving the efficiency of light- and current-generating devices.
Added Value of Reliability to a Microgrid: Simulations of Three California Buildings
Marnay, Chris; Lai, Judy; Stadler, Michael; Siddiqui, Afzal
2009-05-07T23:59:59.000Z
The Distributed Energy Resources Customer Adoption Model is used to estimate the value an Oakland nursing home, a Riverside high school, and a Sunnyvale data center would need to put on higher electricity service reliability for them to adopt a Consortium for Electric Reliability Technology Solutions Microgrid (CM) based on economics alone. A fraction of each building's load is deemed critical based on its mission, and the added cost of CM capability to meet it added to on-site generation options. The three sites are analyzed with various resources available as microgrid components. Results show that the value placed on higher reliability often does not have to be significant for CM to appear attractive, about 25 $/kWcdota and up, but the carbon footprint consequences are mixed because storage is often used to shift cheaper off-peak electricity to use during afternoon hours in competition with the solar sources.
Rhenium-188: Availability from the W-188/Re-188 Generator and Status of Current Applications
Pillai, M R A [Bhabha Atomic Research Centre, Mumbai, India; Dash, A [Bhabha Atomic Research Centre, Mumbai, India; Knapp Jr, Russ F [ORNL
2012-01-01T23:59:59.000Z
Rhenium-188 is one of the most readily available generator derived and useful radionuclides for therapy emitting - particles (2.12 MeV, 71.1% and 1.965 MeV, 25.6%) and imageable gammas (155 KeV, 15.1%). The 188W/188Re generator is an ideal source for the long term (4-6 months) continuous availability of no carrier added (nca) 188Re suitable for the preparation of radiopharmaceuticals for radionuclide therapy. The challenges associated with the double neutron capture route of production of the parent 188W radionuclide have been a major impediment in the progress of application of 188Re. Tungsten-188 of adequate specific activity can be prepared only in 2-3 of the high flux reactors operating in the World. Several useful technologies have been developed for the preparation of clinical grade 188W/188Re generator. Since the specific activity of 188W used in the generator is relatively low (<5 Ci/g), the eluted 188ReO4- can have low radioactive concentration often insufficient for radiopharmaceutical preparation. However, several efficient post elution concentration techniques have been developed that yield clinically useful 188ReO4-. Rhenium-188 has been used for the preparation of therapeutic radiopharmaceuticals for the management of diseases such as bone metastasis, rheumatoid arthritis and primary cancers. Several early phase clinical studies using radiopharmaceuticals based on 188Re-labeled phosphonates, antibodies, peptides, lipiodol and particulates have been reported. This article reviews the availability, and use of188Re including a discussion of why broader use of 188Re has not progressed as ecpected as a popular radionuclide for therapy.
Metabolic Engineering for Improved Biofuel Yield in a Marine
Petta, Jason
Metabolic Engineering for Improved Biofuel Yield in a Marine Cyanobacterium/conclusion · future work that will be done to increase biofuel yield #12;Problems? · Many na@al renewable source of energy -Biofuel produc@on from aqua@c photoautotroph
Triptycene side unit effects on compressive yield strength in polycarbonates
Fraser, Douglas (Douglas H.)
2006-01-01T23:59:59.000Z
Polycarbonates have long been studied for their excellent mechanical toughness. Adding side units to polycarbonate could increase physical properties of the polymer. The role of triptycene in polycarbonate was studied by ...
Calibration methodology for proportional counters applied to yield measurements of a neutron burst
Tarifeño-Saldivia, Ariel, E-mail: atarifeno@cchen.cl, E-mail: atarisal@gmail.com; Pavez, Cristian; Soto, Leopoldo [Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago (Chile) [Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago (Chile); Center for Research and Applications in Plasma Physics and Pulsed Power, P4, Santiago (Chile); Departamento de Ciencias Fisicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Republica 220, Santiago (Chile); Mayer, Roberto E. [Instituto Balseiro and Centro Atómico Bariloche, Comisión Nacional de Energía Atómica and Universidad Nacional de Cuyo, San Carlos de Bariloche R8402AGP (Argentina)] [Instituto Balseiro and Centro Atómico Bariloche, Comisión Nacional de Energía Atómica and Universidad Nacional de Cuyo, San Carlos de Bariloche R8402AGP (Argentina)
2014-01-15T23:59:59.000Z
This paper introduces a methodology for the yield measurement of a neutron burst using neutron proportional counters. This methodology is to be applied when single neutron events cannot be resolved in time by nuclear standard electronics, or when a continuous current cannot be measured at the output of the counter. The methodology is based on the calibration of the counter in pulse mode, and the use of a statistical model to estimate the number of detected events from the accumulated charge resulting from the detection of the burst of neutrons. The model is developed and presented in full detail. For the measurement of fast neutron yields generated from plasma focus experiments using a moderated proportional counter, the implementation of the methodology is herein discussed. An experimental verification of the accuracy of the methodology is presented. An improvement of more than one order of magnitude in the accuracy of the detection system is obtained by using this methodology with respect to previous calibration methods.
Searches for Fourth Generation Fermions
Ivanov, A.; /Fermilab
2011-09-01T23:59:59.000Z
We present the results from searches for fourth generation fermions performed using data samples collected by the CDF II and D0 Detectors at the Fermilab Tevatron p{bar p} collider. Many of these results represent the most stringent 95% C. L. limits on masses of new fermions to-date. A fourth chiral generation of massive fermions with the same quantum numbers as the known fermions is one of the simplest extensions of the SM with three generations. The fourth generation is predicted in a number of theories, and although historically have been considered disfavored, stands in agreement with electroweak precision data. To avoid Z {yields} {nu}{bar {nu}} constraint from LEP I a fourth generation neutrino {nu}{sub 4} must be heavy: m({nu}{sub 4}) > m{sub Z}/2, where m{sub Z} is the mass of Z boson, and to avoid LEP II bounds a fourth generation charged lepton {ell}{sub 4} must have m({ell}{sub 4}) > 101 GeV/c{sup 2}. At the same time due to sizeable radiative corrections masses of fourth generation fermions cannot be much higher the current lower bounds and masses of new heavy quarks t' and b' should be in the range of a few hundred GeV/c{sup 2}. In the four-generation model the present bounds on the Higgs are relaxed: the Higgs mass could be as large as 1 TeV/c{sup 2}. Furthermore, the CP violation is significantly enhanced to the magnitude that might account for the baryon asymmetry in the Universe. Additional chiral fermion families can also be accommodated in supersymmetric two-Higgs-doublet extensions of the SM with equivalent effect on the precision fit to the Higgs mass. Another possibility is heavy exotic quarks with vector couplings to the W boson Contributions to radiative corrections from such quarks with mass M decouple as 1/M{sup 2} and easily evade all experimental constraints. At the Tevatron p{bar p} collider 4-th generation chiral or vector-like quarks can be either produced strongly in pairs or singly via electroweak production, where the latter can be enhanced for vector-like quarks. In the following we present searches for both pair and single production of heavy quarks performed by CDF and D0 Collaborations.
Multipath Routing Based Secure Data Transmission in Ad Hoc Networks
Delgado-Frias, José G.
Multipath Routing Based Secure Data Transmission in Ad Hoc Networks Li Zhao and José G. Delgado in the networks. In this paper, we present and evaluate a scheme, in which multipath routing combined the single path DSR. Index Terms--security, data transmission, multipath routing, ad hoc networks I
Developing Louisiana's Forest Products Industry: Adding Value for the Future
of a manufacturingThe increased value at each stage of a manufacturing assembly processassembly process Those and necessaryimportant and necessary Addition of net economic valueAddition of net economic value Value can be added through manufacturing orValue can be added through manufacturing or marketingmarketing Why Add Value
Reception-Aware Power Control in Ad Hoc Mobile Networks
Mans, Bernard
Reception-Aware Power Control in Ad Hoc Mobile Networks Nirisha Shrestha and Bernard Mans Macquarie resource in ad hoc mobile networks, mak- ing power control a popular, yet crucial, technique. The network of power control non-trivial. For sake of simplicity, most existing power control protocols only consider
Poon, Chung Keung
________________________________________________________________________________ Topology Control of Ad Hoc Wireless Networks for Energy Efficiency Maggie X. Cheng, Member, IEEE, Mihaela of each wireless node such that the resulting network is connected and the total energy consumption the theoretical analysis. Index Terms--Multihop, ad hoc, wireless networks, energy efficiency, transmission power
Curriculum Revision REPORT OF AD HOC WORKING GROUP ON
Brown, Sally
Curriculum Revision REPORT OF AD HOC WORKING GROUP ON CURRICULUM REVISION (November 2002- March (2) Charge to Ad Hoc Working Group on Curriculum.............................. 12 (3) Materials;Curriculum Revision SUMMARY Curriculum transformation at the College of Forest Resources (CFR) is a response
Discharge cell for ozone generator
Nakatsuka, Suguru (Amagasaki, JP)
2000-01-01T23:59:59.000Z
A discharge cell for use in an ozone generator is provided which can suppress a time-related reduction in ozone concentration without adding a catalytic gas such as nitrogen gas to oxygen gas as a raw material gas. The discharge cell includes a pair of electrodes disposed in an opposed spaced relation with a discharge space therebetween, and a dielectric layer of a three-layer structure consisting of three ceramic dielectric layers successively stacked on at least one of the electrodes, wherein a first dielectric layer of the dielectric layer contacting the one electrode contains no titanium dioxide, wherein a second dielectric layer of the dielectric layer exposed to the discharge space contains titanium dioxide in a metal element ratio of not lower than 10 wt %.
Dynamics and BPS states of AdS5 supergravity with a Gauss-Bonnet term
Olivera Miskovic; Ricardo Troncoso; Jorge Zanelli
2006-03-23T23:59:59.000Z
Some dynamical aspects of five-dimensional supergravity as a Chern-Simons theory for the SU(2,2|N) group, are analyzed. The gravitational sector is described by the Einstein-Hilbert action with negative cosmological constant and a Gauss-Bonnet term with a fixed coupling. The interaction between matter and gravity is characterized by intricate couplings which give rise to dynamical features not present in standard theories. Depending on the location in phase space, the dynamics can possess different number of propagating degrees of freedom, including purely topological sectors. This inhomogeneity of phase space requires special care in the analysis. Background solutions in the canonical sectors, which have regular dynamics with maximal number of degrees of freedom, are shown to exist. Within this class, explicit solutions given by locally AdS spacetimes with nontrivial gauge fields are constructed, and BPS states are identified. It is shown that the charge algebra acquires a central extension due to the presence of the matter fields. The Bogomol'nyi bound for these charges is discussed. Special attention is devoted to the N=4 case since then the gauge group has a U(1) central charge and the phase space possesses additional irregular sectors.
Emergent AdS3 and BTZ Black Hole from Weakly Interacting Hot 2d CFT
Soo-Jong Rey; Yasuaki Hikida
2006-05-02T23:59:59.000Z
We investigate emergent holography of weakly coupled two-dimensional hyperK\\"ahler sigma model on cotangent bundle of (N-1)-dimensional complex projective space at zero and finite temperature. The sigma model is motivated by the spacetime conformal field theory dual to the near-horizon geometry of Q1 D1-brane bound to Q5 D5-brane wrapped on four-torus times circle, where N = Q1*Q5. The sigma model admits nontrivial instanton for all N greater than or equal to 2, which serves as a local probe of emergent holographic spacetime. We define emergent geometry of the spacetime as that of instanton moduli space via Hitchin's information metric. At zero temperature, we find that emergent geometry is AdS3. At finite temperature, time-periodic instanton is mappable to zero temperature instanton via conformal transformation. Utilizing the transformation, we show that emergent geometry is precisely that of the non-extremal, non-rotating BTZ black hole.
New Formulation of the Type IIB Superstring Action in $AdS_5 \\times S^5$
John H. Schwarz
2015-06-25T23:59:59.000Z
Previous studies of the type IIB superstring in an ${AdS_5 \\times S^5}$ background are based on a description of the superspace geometry as the quotient space $PSU(2,2|4)/SO(4,1) \\times SO(5)$. This paper develops an alternative approach in which the Grassmann coordinates provide a nonlinear realization of $PSU(2,2|4)$ based on the quotient space $PSU(2,2|4)/SU(2,2) \\times SU(4)$, and the bosonic coordinates are described as a submanifold of $SU(2,2) \\times SU(4)$. This formulation keeps all bosonic symmetries manifest, and it provides the complete dependence on the Grassmann coordinates in terms of simple analytic expressions. It is used to construct the superstring world-sheet action in a form in which the $PSU(2,2|4)$ symmetry is manifest and kappa symmetry can be established. This formulation might have some advantages compared to previous ones, but this remains to be demonstrated.
Classical and Quantum Equations of Motion for a BTZ Black String in AdS Space
Eric Greenwood; Evan Halstead; Peng Hao
2010-01-24T23:59:59.000Z
We investigate gravitational collapse of a $(3+1)$-dimensional BTZ black string in AdS space in the context of both classical and quantum mechanics. This is done by first deriving the conserved mass per unit length of the cylindrically symmetric domain wall, which is taken as the classical Hamiltonian of the black string. In the quantum mechanical context, we take primary interest in the behavior of the collapse near the horizon and near the origin (classical singularity) from the point of view of an infalling observer. In the absence of radiation, quantum effects near the horizon do not change the classical conclusions for an infalling observer, meaning that the horizon is not an obstacle for him/her. The most interesting quantum mechanical effect comes in when investigating near the origin. First, quantum effects are able to remove the classical singularity at the origin, since the wave function is non-singular at the origin. Second, the Schr\\"odinger equation describing the behavior near the origin displays non-local effects, which depend on the energy density of the domain wall. This is manifest in that derivatives of the wavefunction at one point are related to the value of the wavefunction at some other distant point.
An Integrable Deformation of the AdS5 x S5 Superstring
Timothy J. Hollowood; J. Luis Miramontes; David M. Schmidtt
2014-09-24T23:59:59.000Z
The S-matrix on the world-sheet theory of the string in AdS5 x S5 has previously been shown to admit a deformation where the symmetry algebra is replaced by the associated quantum group. The case where q is real has been identified as a particular deformation of the Green-Schwarz sigma model. An interpretation of the case with q a root of unity has, until now, been lacking. We show that the Green-Schwarz sigma model admits a discrete deformation which can be viewed as a rather simple deformation of the F/F_V gauged WZW model, where F=PSU(2,2|4). The deformation parameter q is then a k-th root of unity where k is the level. The deformed theory has the same equations-of-motion as the Green-Schwarz sigma model but has a different symplectic structure. We show that the resulting theory is integrable and has just the right amount of kappa-symmetries that appear as a remnant of the fermionic part of the original gauge symmetry. This points to the existence of a fully consistent deformed string background.
An Integrable Deformation of the AdS5 x S5 Superstring
Hollowood, Timothy J; Schmidtt, David
2014-01-01T23:59:59.000Z
The S-matrix on the world-sheet theory of the string in AdS5 x S5 has previously been shown to admit a deformation where the symmetry algebra is replaced by the associated quantum group. The case where q is real has been identified as a particular deformation of the Green-Schwarz sigma model. An interpretation of the case with q a root of unity has, until now, been lacking. We show that the Green-Schwarz sigma model admits a discrete deformation which can be viewed as a rather simple deformation of the F/F gauged WZW model, where F=PSU(2,2|4). The deformation parameter q is then a k-th root of unity where k is the level. The deformed theory has the same equations-of-motion as the Green-Schwarz sigma model but has a different symplectic structure. We show that the resulting theory is integrable and has just the right amount of kappa-symmetries that appear as a remnant of the fermionic part of the original gauge symmetry. This points to the existence of a fully consistent deformed string background.
Characteristic length of an AdS/CFT superconductor
Kengo Maeda; Takashi Okamura
2008-10-30T23:59:59.000Z
We investigate in more detail the holographic model of a superconductor recently found by Hartnoll, Herzog, and Horowitz [Phys. Rev. Lett. 101, 031601], which is constructed from a condensate of a charged scalar field in AdS_4-Schwarzschild background. By analytically studying the perturbation of the gravitational system near the critical temperature T_c, we obtain the superconducting coherence length proportional to 1/\\sqrt{1-T/T_c} via AdS/CFT correspondence. By adding a small external homogeneous magnetic field to the system, we find that a stationary diamagnetic current proportional to the square of the order parameter is induced by the magnetic field. These results agree with Ginzburg-Landau theory and strongly support the idea that a superconductor can be described by a charged scalar field on a black hole via AdS/CFT duality.
Generation gaps in engineering?
Kim, David J. (David Jinwoo)
2008-01-01T23:59:59.000Z
There is much enthusiastic debate on the topic of generation gaps in the workplace today; what the generational differences are, how to address the apparent challenges, and if the generations themselves are even real. ...
Dynamic and rate-dependent yielding in model cohesive suspensions
Richard Buscall; Peter J. Scales; Anthony D. Stickland; Hui-En Teo; Tiara E. Kusuma; Daniel R. Lester
2015-02-02T23:59:59.000Z
An experimental system has been found recently, a coagulated CaCO3 suspension system, which shows very variable yield behaviour depending upon how it is tested and, specifically, at what rate it is sheared. At P\\'eclet numbers Pe > 1 it behaves as a simple Herschel Bulkley liquid, whereas at Pe < 1 highly non-monotonic flow curves are seen. In controlled stress testing it shows hysteresis and shear banding and in the usual type of stress scan, used to measure flow curves in controlled stress mode routinely, it can show very erratic and irreproducible behaviour. All of these features will be attributed here to a dependence of the solid phase, or, yield stress, on the prevailing rate of shear at the yield point. Stress growth curves obtained from step strain-rate testing showed that this rate-dependence was a consequence of P\\'eclet number dependent strain softening. At very low Pe, yield was cooperative and the yield strain was order-one, whereas as Pe approached unity, the yield strain reduced to that needed to break interparticle bonds, causing the yield stress to be greatly reduced. It is suspected that rate-dependent yield could well be the rule rather than the exception for cohesive suspensions more generally. If so, then the Herschel-Bulkley equation can usefully be generalized to read (in simple shear). The proposition that rate-dependent yield might be general for cohesive suspensions is amenable to critical experimental testing by a range of means and along lines suggested.
New $AdS_3 \\times S^2$ T-duals with $\\mathcal{N} = (0,4)$ supersymmetry
Yolanda Lozano; Niall T. Macpherson; Jesús Montero; Eoin Ó Colgáin
2015-07-09T23:59:59.000Z
It is well known that Hopf-fibre T-duality and uplift takes the D1-D5 near-horizon into a class of $AdS_3 \\times S^2$ geometries in 11D where the internal space is a Calabi-Yau three-fold. Moreover, supersymmetry dictates that Calabi-Yau is the only permissible $SU(3)$-structure manifold. Generalising this duality chain to non-Abelian isometries, a strong parallel exists, resulting in the first explicit example of a class of $AdS_3 \\times S^2$ geometries with $SU(2)$-structure. Furthermore, the non-Abelian T-dual of $AdS_3 \\times S^3 \\times S^3 \\times S^1$ results in a new supersymmetric $AdS_3 \\times S^2$ geometry, which falls outside of all known classifications. We explore the basic properties of the holographic duals associated to the new backgrounds. We compute the central charges and show that they are compatible with a large $\\mathcal{N}=4$ superconformal algebra in the infra-red.
Yangian Symmetry, S-Matrices and Bethe Ansatz for the AdS5 x S5 Superstring
M de Leeuw
2009-01-22T23:59:59.000Z
We discuss the relation between the recently derived bound state S-matrices for the AdS5 x S5 superstring and Yangian symmetry. We will study the relation between this Yangian symmetry and the Bethe ansatz. In particular we can use it to derive the Bethe equations for bound states.
Critical behavior of charged Gauss-Bonnet AdS black holes in the grand canonical ensemble
Zou, De-Cheng; Wang, Bin
2014-01-01T23:59:59.000Z
We study the thermodynamics in the grand canonical ensemble of D-dimensional charged Gauss-Bonnet-AdS black holes in the extended phase space. We find that the usual small-large black hole phase transition, which exhibits analogy with the Van de Waals liquid-gas system holds in five-dimensional spherical charged Gauss-Bonnet-AdS black holes when its potential is fixed within the range $0Gauss-Bonnet-AdS black holes, there is no such phase transition. In the limiting case, Reissner-Nordstrom-AdS black holes, with vanishing Gauss-Bonnet parameter, there is no critical behavior in the grand canonical ensemble. This result holds independent of the spacetime dimensions and topologies. We also examine the behavior of physical quantities in the vicinity of the critical point in the five-dimensional spherical charged Gauss-Bonnet-AdS black holes.
Critical behavior of charged Gauss-Bonnet AdS black holes in the grand canonical ensemble
De-Cheng Zou; Yunqi Liu; Bin Wang
2014-09-03T23:59:59.000Z
We study the thermodynamics in the grand canonical ensemble of D-dimensional charged Gauss-Bonnet-AdS black holes in the extended phase space. We find that the usual small-large black hole phase transition, which exhibits analogy with the Van de Waals liquid-gas system holds in five-dimensional spherical charged Gauss-Bonnet-AdS black holes when its potential is fixed within the range $0Gauss-Bonnet-AdS black holes, there is no such phase transition. In the limiting case, Reissner-Nordstrom-AdS black holes, with vanishing Gauss-Bonnet parameter, there is no critical behavior in the grand canonical ensemble. This result holds independent of the spacetime dimensions and topologies. We also examine the behavior of physical quantities in the vicinity of the critical point in the five-dimensional spherical charged Gauss-Bonnet-AdS black holes.
Small Generator Aggregation (Maine)
Broader source: Energy.gov [DOE]
This section establishes requirements for electricity providers to purchase electricity from small generators, with the goal of ensuring that small electricity generators (those with a nameplate...
Shelnutt, John A. (Albuquerque, NM)
1986-01-01T23:59:59.000Z
A method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation which comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a gas hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound .pi.--.pi. complexes which can develop.
Shelnutt, J.A.
1984-11-29T23:59:59.000Z
A method is disclosed improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation. The method comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound ..pi..-..pi.. complexes which can develop.
Christman, E.A.
2010-01-01T23:59:59.000Z
NEON AND ARGON IONS: INTEGRAL YIELDS FROM FERROUS SULFATENEON AND ARGON IONS: INTEGRAL YIELDS FROM FERROUS SULFATE
Yield Enhancement of Reconfigurable Microfluidics-Based Biochips Using
Chakrabarty, Krishnendu
Yield Enhancement of Reconfigurable Microfluidics-Based Biochips Using Interstitial Redundancy FEI SU and KRISHNENDU CHAKRABARTY Duke University Microfluidics-based biochips for biochemical analysis cumbersome equipment with minia- turized and integrated systems. As these microfluidics-based microsystems
High yield fusion in a staged Z-pinch
RAHMAN, H. U; WESSEL, F. J; ROSTOKER, N.; NEY, P. H
2009-01-01T23:59:59.000Z
D calculations the predicted fusion-energy yield was 70 MJ,implosion parameters, net-fusion energy is produced. In then x 0.248, and scaled fusion energy, E f x 0.199. Near peak
Bird Communities and Biomass Yields in Potential Bioenergy Grasslands
Turner, Monica G.
providing bird habitat. Bioenergy grasslands promote agricultural multifunctionality and conservationBird Communities and Biomass Yields in Potential Bioenergy Grasslands Peter J. Blank1 *, David W, Wisconsin, United States of America Abstract Demand for bioenergy is increasing, but the ecological
TOWARDS STANDARDIZATION OF CSP YIELD ASSESSMENTS Richard Meyer
Heinemann, Detlev
TOWARDS STANDARDIZATION OF CSP YIELD ASSESSMENTS Richard Meyer 1 , Hans Georg Beyer 2 , Jörg Schmidt 1 , and Marko Schwandt 5 1 EPURON GmbH, Anckelmannsplatz 1, 20537 Hamburg, Germany, r.meyer
Plant-Wide Energy Conservation Program Yields Impressive Results
Adlkes, R. P.; Zupko, A. J.; Adams, J. W.
1980-01-01T23:59:59.000Z
to heating system and process changes by Installing improved boiler control systems and Initiating operator training programs. ? When rebuilding heat treating equipment, ceramic fiber insulation was used, yielding reduced heat losses and faster...
High yield fusion in a staged Z-pinch
RAHMAN, H. U; WESSEL, F. J; ROSTOKER, N.; NEY, P. H
2009-01-01T23:59:59.000Z
z-pinch for controlled fusion. PHYSICS OF PLASMAS, 8:616,N. Rostoker. Thermonuclear fusion by a z-? pinch. In DenseHigh yield fusion in a Staged Z-pinch H. U. Rahman, F. J.
Future Yield Growth: What Evidence from Historical Data?
Gitiaux, Xavier
The potential future role of biofuels has become an important topic in energy legislation as it is seen as a potential low carbon alternative to conventional fuels. Hence, future yield growth is an important topic from ...
Hierarchy of scales in B{yields}PS decays
Delepine, D.; Lucio M, J. L. [Instituto de Fisica, Universidad de Guanajuato Loma del Bosque no 103, Lomas del Campestre, 37150 Leon, Guanajuato (Mexico); Mendoza S, J. A. [Depto. de Fisica-Matematicas, Universidad de Pamplona Pamplona, Norte de Santander (Colombia); Ramirez, Carlos A. [Escuela de Fisica, Universidad Industrial de Santander, A.A. 678, Bucaramanga (Colombia)
2008-08-31T23:59:59.000Z
We show that the naive factorization approach can accommodate the existence of the observed hierarchy of branching ratios for the B{yields}PS decays (P stands for pseudoscalar and S for scalar mesons respectively.
Noncommutative Extension of AdS-CFT and Holographic Superconductors
Souvik Pramanik; Sudipta Das; Subir Ghosh
2015-02-13T23:59:59.000Z
In this Letter, we consider a Non-Commutative (NC) extension of AdS-CFT correspondence and its effects on holographic superconductors. NC corrections are incorporated via the NC generalization of Schwarzschild black hole metric in AdS with the probe limit. We study NC effects on the relations connecting the charge density and the critical temperature of the Holographic Superconductors. Furthermore, condensation operator of the superconductor has been analyzed. Our results suggest that generically, NC effects increase the critical temperature of the holographic superconductor.
A critical evaluation of factors affecting reservoir yield estimates
Bergman, Carla Elaine
1987-01-01T23:59:59.000Z
Flood Control Storage 146 167 167 168 175 TABLE OF CONTENTS (CONTINUED) Streamflow Page 176 Representation of Future Streamflow Using Historical Data 178 Streamflow Data Adjustment Evaporation Seasonal Distribution of Water Use CHAPTER VI... Reservoir Storage Frequency for System Firm Yield Simulation 119 22 Reservoir Reliability 122 23 Storage Capacity Versus Firm Yield Based on Alternative Sediment Conditions 129 24 Water Rights Above Control Points 133 25 Water Rights Above Control...
Biomimetics for next generation materials BY FRANCOIS BARTHELAT*
Barthelat, Francois
. The resulting materials will offer new combinations of low weight, stiffness and toughness, with addedBiomimetics for next generation materials BY FRANCOIS BARTHELAT* Department of Mechanical of evolution have produced extremely efficient natural materials, which are increasingly becoming a source
Adding OAI-ORE Support to Repository Platforms
Maslov, Alexey; Mikeal, Adam; Phillips, Scott; Leggett, John; McFarland, Mark
2009-05-17T23:59:59.000Z
the local to the federated repository became evident. This paper presents our experiences adding harvesting support to the DSpace repository platform using the ORE and PMH protocols from the Open Archives Initiative. We describe our use case for a statewide...
Mobilized ad-hoc networks: A reinforcement learning approach
Chang, Yu-Han
2003-12-04T23:59:59.000Z
Research in mobile ad-hoc networks has focused on situations in which nodes have no control over their movements. We investigate an important but overlooked domain in which nodes do have control over their movements. ...
Missouri Value-Added Loan Guarantee Program (Missouri)
Broader source: Energy.gov [DOE]
The Missouri Value-Added Loan Guarantee Program provides a 50% first-loss guarantee to lenders who make agricultural business development loans for the acquisition, construction, improvement, or...
User level routing for mobile ad hoc networks
Virk, Navjot
2001-01-01T23:59:59.000Z
Many routing protocols have been proposed for mobile ad hoc networks. Traditionally routing protocols have been implemented in the kernel of the operating system. The main reasons for this are performance and security. This research explores...
Poster: -Graphs: Flexible Topology Control in Wireless Ad Hoc Networks
Williamson, Carey
Poster: -Graphs: Flexible Topology Control in Wireless Ad Hoc Networks Ashikur Rahman Department networks. Most algorithms strive to reduce energy consumption by cre- ating a sparse topology with few long of topologies and provides the flexibility to network
Truthful resource management in wireless ad hoc networks
Cai, Jianfeng
2005-11-01T23:59:59.000Z
In wireless mobile ad hoc networks (MANETs), cooperation cannot be an im- plicit assumption anymore. Each profit-oriented network node has the intention to be selfish due to limited resource possession. In this dissertation, we investigate...
Context-Aware Protocol Engines for Ad Hoc Networks
Garcia-Luna-Aceves, J.J.
2009-01-01T23:59:59.000Z
Context-Aware Protocol Engines for Ad Hoc Networks J. J.we call a context-aware protocol engine. With a CAPE, nodesthe context-aware protocol engine (CAPE) as an instantiation
Generation to Generation: The Heart of Family Medicine
Winter, Robin O
2012-01-01T23:59:59.000Z
Ageism in the Workplace. Generations Spring, 5. Westman,of caring for multiple generations simultaneously. StronglyGeneration to Generation: The Heart of Family Medicine
ENERGY GENERATION RESEARCH PIER Energy Generation Research
Project: The project will employ cost-effective integrated renewable energy resources to provide onsite renewable energy production (wind and poultry bio-gas); and use onsite energy storage at electricENERGY GENERATION RESEARCH PIER Energy Generation Research www.energy.ca.gov/research/ renewable
Firestone, Richard B; Reijonen, Jani
2014-05-27T23:59:59.000Z
An embodiment of a gamma ray generator includes a neutron generator and a moderator. The moderator is coupled to the neutron generator. The moderator includes a neutron capture material. In operation, the neutron generator produces neutrons and the neutron capture material captures at least some of the neutrons to produces gamma rays. An application of the gamma ray generator is as a source of gamma rays for calibration of gamma ray detectors.
Fighting Online Click-Fraud Using Bluff Ads
Haddadi, Hamed
2010-01-01T23:59:59.000Z
Online advertising is currently the greatest source of revenue for many Internet giants. The increased number of specialized websites and modern profiling techniques, have all contributed to an explosion of the income of ad brokers from online advertising. The single biggest threat to this growth, is however, click-fraud. Trained botnets and even individuals are hired by click-fraud specialists in order to maximize the revenue of certain users from the ads they publish on their websites, or to launch an attack between competing businesses. In this note we wish to raise the awareness of the networking research community on potential research areas within this emerging field. As an example strategy, we present Bluff ads; a class of ads that join forces in order to increase the effort level for click-fraud spammers. Bluff ads are either targeted ads, with irrelevant display text, or highly relevant display text, with irrelevant targeting information. They act as a litmus test for the legitimacy of the individual...
The Bethe Ansatz for AdS5 x S5 Bound States
M de Leeuw
2009-01-22T23:59:59.000Z
We reformulate the nested coordinate Bethe ansatz in terms of coproducts of Yangian symmetry generators. This allows us to derive the nested Bethe equations for the bound state string S-matrices. We find that they coincide with the Bethe equations obtained from a fusion procedure. The bound state number dependence in the Bethe equations appears through the parameters x^{\\pm} and the dressing phase only.
Leung, Ka-Ngo (Hercules, CA)
2009-12-29T23:59:59.000Z
A cylindrical neutron generator is formed with a coaxial RF-driven plasma ion source and target. A deuterium (or deuterium and tritium) plasma is produced by RF excitation in a cylindrical plasma ion generator using an RF antenna. A cylindrical neutron generating target is coaxial with the ion generator, separated by plasma and extraction electrodes which contain many slots. The plasma generator emanates ions radially over 360.degree. and the cylindrical target is thus irradiated by ions over its entire circumference. The plasma generator and target may be as long as desired. The plasma generator may be in the center and the neutron target on the outside, or the plasma generator may be on the outside and the target on the inside. In a nested configuration, several concentric targets and plasma generating regions are nested to increase the neutron flux.
Leung, Ka-Ngo (Hercules, CA)
2008-04-22T23:59:59.000Z
A cylindrical neutron generator is formed with a coaxial RF-driven plasma ion source and target. A deuterium (or deuterium and tritium) plasma is produced by RF excitation in a cylindrical plasma ion generator using an RF antenna. A cylindrical neutron generating target is coaxial with the ion generator, separated by plasma and extraction electrodes which contain many slots. The plasma generator emanates ions radially over 360.degree. and the cylindrical target is thus irradiated by ions over its entire circumference. The plasma generator and target may be as long as desired. The plasma generator may be in the center and the neutron target on the outside, or the plasma generator may be on the outside and the target on the inside. In a nested configuration, several concentric targets and plasma generating regions are nested to increase the neutron flux.
Leung, Ka-Ngo
2005-06-14T23:59:59.000Z
A cylindrical neutron generator is formed with a coaxial RF-driven plasma ion source and target. A deuterium (or deuterium and tritium) plasma is produced by RF excitation in a cylindrical plasma ion generator using an RF antenna. A cylindrical neutron generating target is coaxial with the ion generator, separated by plasma and extraction electrodes which contain many slots. The plasma generator emanates ions radially over 360.degree. and the cylindrical target is thus irradiated by ions over its entire circumference. The plasma generator and target may be as long as desired. The plasma generator may be in the center and the neutron target on the outside, or the plasma generator may be on the outside and the target on the inside. In a nested configuration, several concentric targets and plasma generating regions are nested to increase the neutron flux.
Stress localization, stiffening and yielding in a model colloidal gel
Jader Colombo; Emanuela Del Gado
2014-06-16T23:59:59.000Z
We use numerical simulations and an athermal quasi-static shear protocol to investigate the yielding of a model colloidal gel. Under increasing deformation, the elastic regime is followed by a significant stiffening before yielding takes place. A space-resolved analysis of deformations and stresses unravel how the complex load curve observed is the result of stress localization and that the yielding can take place by breaking a very small fraction of the network connections. The stiffening corresponds to the stretching of the network chains, unbent and aligned along the direction of maximum extension. It is characterized by a strong localization of tensile stresses, that triggers the breaking of a few network nodes at around 30% of strain. Increasing deformation favors further breaking but also shear-induced bonding, eventually leading to a large-scale reorganization of the gel structure at the yielding. At low enough shear rates, density and velocity profiles display significant spatial inhomogeneity during yielding in agreement with experimental observations.
Yield Strength as a Thermodynamic Consequence of Information Erasure
Katira, Parag
2015-01-01T23:59:59.000Z
We observe that the yield strength of a variety of materials, including highly structured and densely packed metals, alloys and semi-crystalline polymers is reasonably approximated by the thermal energy density of the material. This suggests that it is related to the entropic cost of the irreversible work done during plastic deformation rather than the enthalpic cost that depends on the elastic modulus of the material. Here we propose that the entropic cost of material rearrangement in crystalline solids arises from the difference in the uncertainty in building block positions before and after yielding and estimate it using Landauer's principle for information processing. The yield strength thus obtained in given by the thermal energy density of the material multiplied by ln(2) and provides a guidepost in estimating the strength of materials complementary to the "theoretical strength of solids".
Neutron emission and fragment yield in high-energy fission
Grudzevich, O. T., E-mail: ogrudzevich@ippe.ru; Klinov, D. A. [Institute for Physics and Power Engineering (Russian Federation)] [Institute for Physics and Power Engineering (Russian Federation)
2013-07-15T23:59:59.000Z
The KRIS special library of spectra and emission probabilities in the decays of 1500 nuclei excited up to energies between 150 and 250 MeV was developed for correctly taking into account the decay of highly excited nuclei appearing as fission fragments. The emission of neutrons, protons, and photons was taken into account. Neutron emission fromprimary fragments was found to have a substantial effect on the formation of yields of postneutron nuclei. The library was tested by comparing the calculated and measured yields of products originating from the fission of nuclei that was induced by high-energy protons. The method for calculating these yields was tested on the basis of experimental data on the thermal-neutroninduced fission of {sup 235}U nuclei.
A method for relating impacts with yielding and unyielding targets
Ammerman, D.J.
1991-01-01T23:59:59.000Z
The public has questioned the severity of the regulatory 9 meter drop onto an unyielding target required for Type B radioactive material shipping packages since this drop height results in an impact velocity of only 13.3 m/s (30 MPH). It is the unyielding nature of the regulatory target which makes the 9 meter drop so severe. In this paper a method for relating higher velocity impacts with yielding targets to impacts onto an unyielding target is developed. The severity of impacts with yielding targets is decreased by the amount of the impact energy absorbed in damaging the target. There have been previous attempts to correlate impacts with yielding targets to lower velocity impacts onto an unyielding target, and this work is an expansion of those efforts.
A method for relating impacts with yielding and unyielding targets
Ammerman, D.J.
1991-12-31T23:59:59.000Z
The public has questioned the severity of the regulatory 9 meter drop onto an unyielding target required for Type B radioactive material shipping packages since this drop height results in an impact velocity of only 13.3 m/s (30 MPH). It is the unyielding nature of the regulatory target which makes the 9 meter drop so severe. In this paper a method for relating higher velocity impacts with yielding targets to impacts onto an unyielding target is developed. The severity of impacts with yielding targets is decreased by the amount of the impact energy absorbed in damaging the target. There have been previous attempts to correlate impacts with yielding targets to lower velocity impacts onto an unyielding target, and this work is an expansion of those efforts.
AdS/CFT and Exclusive Processes in QCD
Stanley J. Brodsky; Guy F. de Teramond
2007-09-13T23:59:59.000Z
The AdS/CFT correspondence between string theory in AdS space and conformal field theories in physical space-time leads to an analytic, semi-classical model for strongly-coupled QCD which has scale invariance and dimensional counting at short distances and color confinement at large distances. One can use holography to map the amplitude describing the hadronic state in the fifth dimension of Anti-de Sitter space to the light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons in QCD at the amplitude level. In particular, we show that there is an exact correspondence between the fifth-dimensional coordinate of AdS space z and a specific impact variable zeta which measures the separation of the quark and gluonic constituents within the hadron in ordinary space-time. New relativistic light-front equations in ordinary space-time can then be derived which reproduce the results obtained using the 5-dimensional theory. The effective light-front equations possess elegant algebraic structures and integrability properties. This connection between the AdS and the light-front representations allows one to compute the analytic form of the frame-independent light-front wavefunctions, the fundamental entities which encode hadron properties and allow the computation of decay constants, form factors, deeply virtual Compton scattering, exclusive heavy hadron decays and other exclusive scattering amplitudes. As specific examples we compute the pion coupling constant and study the behavior of the pion form factor in the space and time-like regions. We also determine the Dirac form factors of the proton and neutron in the space-like region.
Evaluation and compilation of fission product yields 1993
England, T.R.; Rider, B.F.
1995-12-31T23:59:59.000Z
This document is the latest in a series of compilations of fission yield data. Fission yield measurements reported in the open literature and calculated charge distributions have been used to produce a recommended set of yields for the fission products. The original data with reference sources, and the recommended yields axe presented in tabular form. These include many nuclides which fission by neutrons at several energies. These energies include thermal energies (T), fission spectrum energies (F), 14 meV High Energy (H or HE), and spontaneous fission (S), in six sets of ten each. Set A includes U235T, U235F, U235HE, U238F, U238HE, Pu239T, Pu239F, Pu241T, U233T, Th232F. Set B includes U233F, U233HE, U236F, Pu239H, Pu240F, Pu241F, Pu242F, Th232H, Np237F, Cf252S. Set C includes U234F, U237F, Pu240H, U234HE, U236HE, Pu238F, Am241F, Am243F, Np238F, Cm242F. Set D includes Th227T, Th229T, Pa231F, Am241T, Am241H, Am242MT, Cm245T, Cf249T, Cf251T, Es254T. Set E includes Cf250S, Cm244S, Cm248S, Es253S, Fm254S, Fm255T, Fm256S, Np237H, U232T, U238S. Set F includes Cm243T, Cm246S, Cm243F, Cm244F, Cm246F, Cm248F, Pu242H, Np237T, Pu240T, and Pu242T to complete fission product yield evaluations for 60 fissioning systems in all. This report also serves as the primary documentation for the second evaluation of yields in ENDF/B-VI released in 1993.
Executive Summary High-Yield Scenario Workshop Series Report
Leslie Park Ovard; Thomas H. Ulrich; David J. Muth Jr.; J. Richard Hess; Steven Thomas; Bryce Stokes
2009-12-01T23:59:59.000Z
To get a collective sense of the impact of research and development (R&D) on biomass resource availability, and to determine the feasibility that yields higher than baseline assumptions used for past assessments could be achieved to support U.S. energy independence, an alternate “High-Yield Scenario” (HYS) concept was presented to industry experts at a series of workshops held in December 2009. The workshops explored future production of corn/agricultural crop residues, herbaceous energy crops (HECs), and woody energy crops (WECs). This executive summary reports the findings of that workshop.
Up-conversion yield in glass ceramics containing silver
Malta, O.L.; Santa-Cruz, P.A.; De Sa, G.F.; Auzel, F.
1987-06-01T23:59:59.000Z
Small silver particles are known to increase the fluorescence yield in rare-earth-doped glasses. These particles can be grown easily in glass ceramics of general composition (PbF2, GeO2, YbF3, ErF3). The authors have studied the effect of the addition of silver on the up-conversion yield due to sequential energy transfer between YbT and ErT ions. The origin and the information that can be obtained from this effect are discussed.
Light propagation and fluorescence quantum yields in liquid scintillators
Buck, C; Wagner, S
2015-01-01T23:59:59.000Z
For the simulation of the scintillation and Cherenkov light propagation in large liquid scintillator detectors a detailed knowledge about the absorption and emission spectra of the scintillator molecules is mandatory. Furthermore reemission probabilities and quantum yields of the scintillator components influence the light propagation inside the liquid. Absorption and emission properties are presented for liquid scintillators using 2,5-Diphenyloxazole (PPO) and 4-bis-(2-Methylstyryl)benzene (bis-MSB) as primary and secondary wavelength shifter. New measurements of the quantum yields for various aromatic molecules are shown.
Estimation of neutron-induced spallation yields of krypton isotopes
Karol, P.J.; Tobin, M.J.; Shibata, S.
1983-10-01T23:59:59.000Z
A procedure is outlined for estimating cross sections for neutron-induced spallation products relative to those for proton-induced reactions. When combined with known proton spallation systematics, it is demonstrated that cumulative yields for cosmogenically-important stable /sup 84/Kr and /sup 86/Kr isotopes are approx.1.4 and approx.2.8 times greater, respectively, for incident neutrons compared to protons at 0.2< or =E< or =3.0 GeV for nearby medium mass targets. Yields for lighter kryptons are relatively insensitive to the identity of the incident nucleon.
Neutron source capability assessment for cumulative fission yields measurements
Descalle, M A; Dekin, W; Kenneally, J
2011-04-06T23:59:59.000Z
A recent analysis of high-quality cumulative fission yields data for Pu-239 published in the peer-reviewed literature showed that the quoted experimental uncertainties do not allow a clear statement on how the fission yields vary as a function of energy. [Prussin2009] To make such a statement requires a set of experiments with well 'controlled' and understood sources of experimental errors to reduce uncertainties as low as possible, ideally in the 1 to 2% range. The Inter Laboratory Working Group (ILWOG) determined that Directed Stockpile Work (DSW) would benefit from an experimental program with the stated goal to reduce the measurement uncertainties significantly in order to make a definitive statement of the relationship of energy dependence to the cumulative fission yields. Following recent discussions between Lawrence Livermore National Laboratory (LLNL) and Los Alamos National Laboratory (LANL), there is a renewed interest in developing a concerted experimental program to measure fission yields in a neutron energy range from thermal energy (0.025 eV) to 14 MeV with an emphasis on discrete energies from 0.5 to 4 MeV. Ideally, fission yields would be measured at single energies, however, in practice there are only 'quasi-monoenergetic' neutrons sources of finite width. This report outlines a capability assessment as of June 2011 of available neutron sources that could be used as part of a concerted experimental program to measure cumulative fission yields. In a framework of international collaborations, capabilities available in the United States, at the Atomic Weapons Establishment (AWE) in the United Kingdom and at the Commissariat Energie Atomique (CEA) in France are listed. There is a need to develop an experimental program that will reduce the measurement uncertainties significantly in order to make a definitive statement of the relationship of energy dependence to the cumulative fission yields. Fission and monoenergetic neutron sources are available that could support these fission yield experiments in the US, as well as at AWE and CEA. Considerations that will impact the final choice of experimental venues are: (1) Availability during the timeframe of interest; (2) Ability to accommodate special nuclear materials; (3) Cost; (4) Availability of counting facilities; and (5) Expected experimental uncertainties.
Bushland Management For Water Yield: Prospects for Texas.
McCarl, Bruce A.; Griffin, Ronald C.; Kaiser, Ronald A.; Freeman, Lansingh S.; Blackburn, Wilbert H.; Jordan, Wayne R.
1987-01-01T23:59:59.000Z
TDOC Z TA245.7 B873 no.1569 LIBRARY :JUNo 91987 I 1 Texas A&M University Brushland Management for Water Yield: Prospects for Texas THE TEXAS AGRICULTURAL EXPERIMENT STATION/Neville P. Clarke, Director/The Texas A&M University System.../College Station, Texas B-1569 May 1987 [Blank Page in Original Bulletin] BRUSHLAND MANAGEMENT FOR WATER YIELD: PROSPECTS FOR TEXAS Bruce A. McCarl Professor- Agricultural Economics Ronald C. Griffin Associate Professor- Agricultural Economics Ronald A...
Mercier, Matthieu J.
We present the results of a combined experimental and numerical study of the generation of internal waves using the novel internal wave generator design of Gostiaux et al. (Exp. Fluids, vol. 42, 2007, pp. 123–130). This ...
Development of a Permanent-Magnet Microwave Ion Source for a Sealed-Tube Neutron Generator
Waldmann, Ole
2011-01-01T23:59:59.000Z
Permanent-Magnet Mi- crowave Ion Source for a Compact High-Yield Neutron Generator,Permanent-Magnet Microwave Ion Source for a Sealed-Tube Neutron Generatorgenerator. Microwave ion sources, however, A permanent-magnet
None
2012-01-01T23:59:59.000Z
REACT Project: Brookhaven National Laboratory will develop a low-cost superconducting wire that could be used in high-power wind generators. Superconducting wire currently transports 600 times more electric current than a similarly sized copper wire, but is significantly more expensive. Brookhaven National Laboratory will develop a high-performance superconducting wire that can handle significantly more electrical current, and will demonstrate an advanced manufacturing process that has the potential to yield a several-fold reduction in wire costs while using a using negligible amount of rare earth material. This design has the potential to make a wind turbine generator lighter, more powerful, and more efficient, particularly for offshore applications.
Topology Control Protocols to Conserve Energy in Wireless Ad Hoc Networks
Xu, Ya; Bien, Solomon; Mori, Yutaka; Heidemann, John; Estrin, D
2003-01-01T23:59:59.000Z
Protocols to Conserve Energy in Wireless Ad Hoc Networks YaL. Tassiulas. Energy conserving routing in wireless ad-hocAdaptive Energy Conservation Protocols for Wireless Ad Hoc
Stuart, Steven J.
The Clemson First Generation Success Program A First-RAte expeRience College is an experience college. First-generation college students are students whose parents do not hold a degree from a four-year college or university. Clemson is proud of its first- generation students and is committed
Superconducting Power Generation
Mario Rabinowitz
2003-02-20T23:59:59.000Z
The superconducting ac generator has the greatest potential for large-scale commercial application of superconductivity that can benefit the public. Electric power is a vital ingredient of modern society, and generation may be considered to be the vital ingredient of a power system. This articles gives background, and an insight into the physics and engineering of superconducting power generation.
Survey of Variable Generation Forecasting in the West: August 2011 - June 2012
Porter, K.; Rogers, J.
2012-04-01T23:59:59.000Z
This report surveyed Western Interconnection Balancing Authorities regarding their implementation of variable generation forecasting, the lessons learned to date, and recommendations they would offer to other Balancing Authorities who are considering variable generation forecasting. Our survey found that variable generation forecasting is at an early implementation stage in the West. Eight of the eleven Balancing Authorities interviewed began forecasting in 2008 or later. It also appears that less than one-half of the Balancing Authorities in the West are currently utilizing variable generation forecasting, suggesting that more Balancing Authorities in the West will engage in variable generation forecasting should more variable generation capacity be added.
Power Generation in Fed-Batch Microbial Fuel Cells as a Function
Power Generation in Fed-Batch Microbial Fuel Cells as a Function of Ionic Strength, Temperature or electrode spacing, should lead to further improvements in power generation and energy recovery in single ionic strength from 100 to 400 mM by adding NaCl increased power output from 720 to 1330 mW/m2. Power
Air Cushion Press for Excellent Uniformity, High Yield, and Fast
Air Cushion Press for Excellent Uniformity, High Yield, and Fast Nanoimprint Across a 100 mm Field, air cushion press (ACP), in which the mold and substrate are pressed against each other by gas pressure rather than solid plates, and compared it with a common method, solid parallel-plate press (SPP
Carbon Nanotube Correlation: Promising Opportunity for CNFET Circuit Yield Enhancement
De Micheli, Giovanni
Carbon Nanotube Correlation: Promising Opportunity for CNFET Circuit Yield Enhancement Jie Zhang1 Mitra1 1 Stanford University, Stanford, CA, U.S.A 2 LSI-EPFL, Lausanne, Switzerland Abstract Carbon are very difficult to control. As a result, "small-width" Carbon Nanotube Field-Effect Transistors (CNFETs
The Impacts and Benefits Yielded from the Sport of Quidditch
Cohen, Adam
2013-08-06T23:59:59.000Z
grounded theory approach and examined the impact and benefits for volunteers who chose to work for the IQA. Findings suggested the unique atmosphere of quidditch was able to produce an environment that yielded positive impact on the volunteers. It was found...
Inertial Confinement Fusion Ignition and High Yield Campaign
energy remains elusive · Precise nature of technology best suited to exploit ignition for energy for defense issues 3. Develop advanced technology capabilities that support the long-term needs of stockpile drive · Demonstration of neutron yield on Z-pinch driven implosions · Significant progress has been made
Genome sequence of the Brown Norway rat yields insights into
Payseur, Bret
Genome sequence of the Brown Norway rat yields insights into mammalian evolution Rat Genome, having made inestimable contributions to human health. We report here the genome sequence of the Brown Norway (BN) rat strain. The sequence represents a high-quality `draft' covering over 90% of the genome
Emulating maize yields from global gridded crop models using
Emulating maize yields from global gridded crop models using statistical estimates Elodie Blanc and Benjamin Sultan Report No. 279 March 2015 #12;The MIT Joint Program on the Science and Policy of Global from two established MIT research centers: the Center for Global Change Science (CGCS) and the Center
Sediment Yield Response to Sediment Reduction Strategies Implemented for 10
195 Sediment Yield Response to Sediment Reduction Strategies Implemented for 10 Years in Watersheds impact practices designed to reduce sediment delivery according to voluntary agreements and regulatory of sediment processes within the past 50 years when information is most reliable have created watershed
Yield Strength as a Function of Dislocation Density
Collins, Gary S.
-displacement graphs as well as obvious excursions and yield points ·These perfect indents give a guideline for what a micro-hardness indenter, which uses a square pyramidal indenter tip. 10 m Procedures and Methods Before/23/2, using known elastic modulus to find tip radius. E* is the elastic modulus, R is the indenter tip radius
Influence of Vegetation Management on Yield and Quality Surface Runoff
Smeins, F. E.
of this study was to determine the influence of vegetation characteristics, grazing systems and precipitation on surface runoff from rangeland on the Edwards Plateau region of Texas. Water yield, organic-N, N03-N, NH4-N, N02-N, total and ortho-P, Ca, Mg, K, p...
Computational Fluid Dynamics (CFD) Modelling on Soot Yield for Fire
Computational Fluid Dynamics (CFD) Modelling on Soot Yield for Fire Engineering Assessment Yong S (CFD) Modelling is now widely used by fire safety engineers throughout the world as a tool of the smoke control design as part of the performance based fire safety design in the current industry
Less Acres and Variable Yield Mark Ohio's Crops
Jones, Michelle
developing technologies and cropping systems that are efficient in capturing solar energy, sus- tainable overLess Acres and Variable Yield Mark Ohio's Crops From 1994 to 2004, the combined acreage of soybean Pathology Dr. Mark Loux Horticulture and Crop Science Dr. Robert Mullen School of Natural Resources Dr. Mark
Consistent scenario for B{yields}PS decays
Delepine, D.; Lucio M, J. L.; Mendoza S, J. A.; Ramirez, Carlos A. [Instituto de Fisica, Universidad de Guanajuato Loma del Bosque 103, Lomas del Campestre, 37150 Leon, Guanajuato (Mexico); Depto. de Fisica-Matematicas, Universidad de Pamplona Pamplona, Norte de Santander (Colombia); Escuela de Fisica, Universidad Industrial de Santander, A.A. 678, Bucaramanga (Colombia)
2008-12-01T23:59:59.000Z
We consider B{yields}PS decays where P stands for pseudoscalar and S for a heavy (1500 MeV) scalar meson. We achieve agreement with available experimental data, which includes two orders of magnitude hierarchy, assuming the scalars mesons are two quark states. The contribution of the dipolar penguin operator O{sub 11} is quantified.
Hickam, Christopher Dale (Glasford, IL)
2008-05-13T23:59:59.000Z
A motor/generator is provided for connecting between a transmission input shaft and an output shaft of a prime mover. The motor/generator may include a motor/generator housing, a stator mounted to the motor/generator housing, a rotor mounted at least partially within the motor/generator housing and rotatable about a rotor rotation axis, and a transmission-shaft coupler drivingly coupled to the rotor. The transmission-shaft coupler may include a clamp, which may include a base attached to the rotor and a plurality of adjustable jaws.
Lim, Jun Wei [Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 06-08 CleanTech One, 1 Cleantech Loop, Singapore 637141 (Singapore); School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore); Wang, Jing-Yuan, E-mail: jywang@ntu.edu.sg [Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 06-08 CleanTech One, 1 Cleantech Loop, Singapore 637141 (Singapore); School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)
2013-04-15T23:59:59.000Z
Highlights: ? Microaeration pretreatment was effective for brown water and food waste mixture. ? The added oxygen was consumed fully by facultative microorganisms. ? Enhanced solubilization, acidification and breakdown of SCFAs to acetate. ? Microaeration pretreatment improved methane yield by 10–21%. ? Nature of inoculum influenced the effects of microaeration. - Abstract: Microaeration has been used conventionally for the desulphurization of biogas, and recently it was shown to be an alternative pretreatment to enhance hydrolysis of the anaerobic digestion (AD) process. Previous studies on microaeration pretreatment were limited to the study of substrates with complex organic matter, while little has been reported on its effect on substrates with higher biodegradability such as brown water and food waste. Due to the lack of consistent microaeration intensities, previous studies were not comparable and thus inconclusive in proving the effectiveness of microaeration to the overall AD process. In this study, the role of microaeration pretreatment in the anaerobic co-digestion of brown water and food waste was evaluated in batch-tests. After a 4-day pretreatment with 37.5 mL-O{sub 2}/L{sub R}-d added to the liquid phase of the reactor, the methane production of substrates were monitored in anaerobic conditions over the next 40 days. The added oxygen was consumed fully by facultative microorganisms and a reducing environment for organic matter degradation was maintained. Other than higher COD solubilization, microaeration pretreatment led to greater VFA accumulation and the conversion of other short chain fatty acids to acetate. This could be due to enhanced activities of hydrolytic and acidogenic bacteria and the degradation of slowly biodegradable compounds under microaerobic conditions. This study also found that the nature of inoculum influenced the effects of microaeration as a 21% and 10% increase in methane yield was observed when pretreatment was applied to inoculated substrates, and substrates without inoculum, respectively.
The Capacityand Energy Efficiency of Wireless Ad Hoc Networks with MultipacketReception
Garcia-Luna-Aceves, J.J.
2008-01-01T23:59:59.000Z
per-joule capacity of energy-limited wireless networks. IEEECapacity and Energy Efficiency of Wireless Ad Hoc Networksplexity, and energy efficiency in random wireless ad hoc
Top Value Added Chemicals from Biomass: Volume I--Results of...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Top Value Added Chemicals from Biomass: Volume I--Results of Screening for Potential Candidates from Sugars and Synthesis Gas Top Value Added Chemicals from Biomass: Volume...
No-carrier-added [1.sup.11 c]putrescine
McPherson, Daniel W. (Baltimore, MD); Fowler, Joanna S. (Bellport, NY); Wolf, Alfred P. (Setauket, NY)
1989-01-01T23:59:59.000Z
The invention relates to a new radiolabeled imaging agent, no-carrier-added [1-.sup.11 C]putrescine, and to the use of this very pure material as a radiotracer with positron emission tomography for imaging brain tumors. The invention further relates to the synthesis of no-carrier-added [1-.sup.11 C]putrescine based on the Michael addition of potassium .sup.11 C-labeled cyanide to acrylonitrile followed by reduction of the .sup.11 C-labeled dinitrile. The new method is rapid and efficient and provides radiotracer with a specific activity greater than 1.4 curies per millimol and in a purity greater than 95%.
Nucleon and flavor form factors in AdS/QCD
Chakrabarti, Dipankar
2013-01-01T23:59:59.000Z
The electromagnetic form factors for the nucleons are related with the GPDs by sum rules. Using the sum rules we calculate the valence GPDs for $u$ and $d$ quarks in a quark model using the lightfront wavefunctions for the nucleons obtained from AdS/QCD. The flavor decompositions of the nucleon form factors are also calculated from the GPDs in this model. We show that the nucleon form factors and their flavor decompositions calculated in AdS/QCD are in agreement with experimental data.
Minnesota, University of
Fig 1. First rotation biomass yield [Mg (oven dry) ha-1 yr-1 ] of top 5 clones with biomass crop about growing SRWCs for bioenergy is that SRWCs may not produce sufficient biomass as a feasible (Fig 1) is well below the required amount of biomass necessary to sustain feasibility of bioenergy
Non-extended phase space thermodynamics of Lovelock AdS black holes in grand canonical ensemble
Jie-Xiong Mo; Wen-Biao Liu
2015-03-06T23:59:59.000Z
Recently, extended phase space thermodynamics of Lovelock AdS black holes has been of great interest. To provide insight from a different perspective and gain a unified phase transition picture, non-extended phase space thermodynamics of $(n+1)$-dimensional charged topological Lovelock AdS black holes is investigated detailedly in the grand canonical ensemble. Specifically, the specific heat at constant electric potential is calculated and phase transition in the grand canonical ensemble is discussed. To probe the impact of the various parameters, we utilize the control variate method and solve the phase transition condition equation numerically for the case $k=1,-1$. There are two critical points for the case $n=6,k=1$ while there is only one for other cases. For $k=0$, there exists no phase transition point. To figure out the nature of phase transition in the grand canonical ensemble, we carry out an analytic check of the analog form of Ehrenfest equations proposed by Banerjee et al. It is shown that Lovelock AdS black holes in the grand canonical ensemble undergo a second order phase transition. To examine the phase structure in the grand canonical ensemble, we utilize the thermodynamic geometry method and calculate both the Weinhold metric and Ruppeiner metric. It is shown that for both analytic and graphical results that the divergence structure of the Ruppeiner scalar curvature coincides with that of the specific heat. Our research provides one more example that Ruppeiner metric serves as a wonderful tool to probe the phase structures of black holes.
A comparison of silage and grain yields of four corn hybrids at three locations in Texas
Spears, Ben Riley
1953-01-01T23:59:59.000Z
A))'I H. '" C I'I OH ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 40 AILNHIX o ~ ~ ~ ~ ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ o oo IT 42 1, Ccsibined silage yields grain yield and lodging percentage of the four hybrids for all locations? 2...? Ceabined silage yields grain yield and lodging percentage of the three plant spacdngs for all locations, TABLES Analysis of variance of silage yields at College Station. Analysis of vsr1mme of grain yields at GoUege Statics& 30 4. Analysis...
A $\\mathcal{N}=2$ Supersymmetric $AdS_4$ Solution in M-theory with Purely Magnetic Flux
Yolanda Lozano; Niall T. Macpherson; Jesús Montero
2015-07-10T23:59:59.000Z
We find a new $\\mathcal{N}=2$ $AdS_4$ solution in M-theory supported by purely magnetic flux via a sequence of abelian and non-abelian T-dualities. This provides the second known example in this class besides the uplift of the Pernici and Sezgin solution to 7d gauged supergravity constructed in the eighties. We compute the free energy of the solution, and show that it scales as $N^{3/2}$. It is intriguing that even though the natural holographic interpretation is in terms of M5-branes wrapped on a special Lagrangian 3-cycle, this solution does not exhibit the expected $N^3$ behavior.
$P-V$ criticality of AdS black hole in the Einstein-Maxwell-power-Yang-Mills gravity
Ming Zhang; Zhan-Ying Yang; De-Cheng Zou; Wei Xu; Rui-Hong Yue
2014-12-03T23:59:59.000Z
We study the $P-V$ critical behaivor of N-dimensional AdS black holes in Einstein-Maxwell-power-Yang-Mills gravity. Our results show the existence of the Van der Waals like small-large black hole phase transitions when taking some special values of charges of the Maxwell and Yang-Mills (YM) fields. Further to calculate the critical exponents of the black holes at the critical point, we find that they are the same as those in the Van der Waals liquid-gas system.
Bound States of the q-Deformed AdS5 x S5 Superstring S-matrix
Ben Hoare; Timothy J. Hollowood; J. Luis Miramontes
2012-05-31T23:59:59.000Z
The investigation of the q deformation of the S-matrix for excitations on the string world sheet in AdS5 x S5 is continued. We argue that due to the lack of Lorentz invariance the situation is more subtle than in a relativistic theory in that the nature of bound states depends on their momentum. At low enough momentum |p|1. This subtlety fixes a problem involving the consistency of crossing symmetry with the relativistic limit found in earlier work. With mirror kinematics, obtained after a double Wick rotation, the bound state structure is simpler and there are no marginally unstable bound states.
Bound States of the q-Deformed AdS5 x S5 Superstring S-matrix
Hoare, Ben; Miramontes, J Luis
2012-01-01T23:59:59.000Z
The investigation of the q deformation of the S-matrix for excitations on the string world sheet in AdS5 x S5 is continued. We argue that due to the lack of Lorentz invariance the situation is more subtle than in a relativistic theory in that the nature of bound states depends on their momentum. At low enough momentum |p|1. This subtlety fixes a problem involving the consistency of crossing symmetry with the relativistic limit found in earlier work. With mirror kinematics, obtained after a double Wick rotation, the bound state structure is simpler and there are no marginally unstable bound states.
Modular Anomaly Detection for Smartphone Ad hoc Communication
of the security solution is evaluated in a small testbed based on three Android-based handsets and a laptop a mobile ad hoc network (MANET). While intrusion detection in MANETs is typically evaluated with network simulators, we argue that it is important to implement and test the solutions in real de- vices to evaluate
Adding Parallel I/O to PARA-BMU
Johnson, Nick; Bethune, Iain
2012-10-01T23:59:59.000Z
VOX-FE is a voxel-based bone modelling suite. The solver part of the suite - PARA-BMU - currently uses only serial I/O routines which lead to poor scalability. We enhance the code by adding parallel I/O routines based on the netCDF and HDF5...
Drug Information Chart Notes Drug ad (intrinsic bias)
Fletcher, Robin
Drug Information Chart Notes Drug ad (intrinsic bias) Trade name Different for each company Dosage Same or different? A drug in a different dosage can be used for a different therapy. Precautions Check for pregnancy A complete book on drugs in pregnancy and lactation in bibliography. (unbiased
Building Intelligent Environments By Adding Smart Artifacts to Spaces
Loke, Seng W. - Loke, Seng W.
Building Intelligent Environments By Adding Smart Artifacts to Spaces: a Peer-to-Peer Architecture collections of smart artifacts, each artifact with an embedded processor, networking and sensing capabilities. The interactive capabilities of the environment are due to the collective working of the smart artifacts
Raman Lidar Profiles–Temperature (RLPROFTEMP) Value-Added Product
Newsom, RK; Sivaraman, C; McFarlane, SA
2012-10-31T23:59:59.000Z
The purpose of this document is to describe the Raman Lidar Profiles–Temperature (RLPROFTEMP) value-added product (VAP) and the procedures used to derive atmospheric temperature profiles from the raw RL measurements. Sections 2 and 4 describe the input and output variables, respectively. Section 3 discusses the theory behind the measurement and the details of the algorithm, including calibration and overlap correction.
AdSplit: Separating smartphone advertising from applications Shashi Shekhar
Wallach, Dan
AdSplit: Separating smartphone advertising from applications Shashi Shekhar shashi applications today rely on third-party advertising services, which provide libraries that are linked into the hosting application. This situ- ation is undesirable for both the application author and the advertiser
Shipboard lighting: A.D. 400-1900
Quinn, Kendra LeeAnne
1999-01-01T23:59:59.000Z
From A.D. 400-1900, illumination was gained by simply lighting a fibrous wick soaked in a burnable fuel. Yet, this basic technology played an integral part in the every day functioning of ships. Vessels which either sailed through the night...
Institute for Software Technology Ad anced RoboticsAdvanced Robotics
Institute for Software Technology Ad anced RoboticsAdvanced Robotics Human Robot Interaction Gerald Steinbauer Institute for Software Technology Gerald Steinbauer 1 Advanced Robotics Â Human Robot Interaction #12;Institute for Software Technology Motivation lik t h b t th tÂ· we like to have robots
An Energy Efficient Location Service for Mobile Ad Hoc etworks
Varela, Carlos
the distance traveled by the location update and query packets and, thus, at reducing the overall energy cost by the location update and query packets and, thus, to reduce the overall energy cost. 2 Energy Efficient LocationAn Energy Efficient Location Service for Mobile Ad Hoc etworks Zijian Wang1 , Eyuphan Bulut1
Wood Products Marketing And Value-Added Opportunities
Wood Products Marketing And Value-Added Opportunities In Latin America: A Focus on Brazil Richard Vlosky, Ph.D. Professor-Forest Products Marketing Interim Director-Louisiana Forest Products Laboratory Industry Strategic Services & Publisher: WOOD Markets Monthly newsletter WOOD Markets 2002 - The Solid Wood
Wood Products Marketing And Value-Added Opportunities
Wood Products Marketing And Value-Added Opportunities Richard Vlosky, Ph.D. Professor-Forest Products Marketing Interim Director-Louisiana Forest Products Laboratory School of Renewable Natural, R.E. Taylor & Associates Ltd. Forest Industry Strategic Services & Publisher: WOOD Markets Monthly
Cooperative Cache-Based Data Access in Ad Hoc Networks
Yener, Aylin
1 Cooperative Cache-Based Data Access in Ad Hoc Networks Guohong Cao, Liangzhong Yin and Chita R: Cooperative cache-based data access framework #12;6 Data Access Framework The cooperative cache-based data data authentication based on sensitivity. #12;16 Conclusion A cooperative cache-based data access
A Power Control MAC Protocol for Ad Hoc Networks
A Power Control MAC Protocol for Ad Hoc Networks Eun-Sun Jung Dept. of Computer Science Texas A This paper presents a power control MAC protocol that al- lows nodes to vary transmit power level on a per control. The main idea of these power control schemes is to use different power lev- els for RTS
Operational Risk Management: Added Value of Advanced Methodologies
Maume-Deschamps, VÃ©ronique
Operational Risk Management: Added Value of Advanced Methodologies Paris, September 2013 Bertrand HASSANI Head of Major Risks Management & Scenario Analysis Santander UK Disclaimer: The opinions, ideas Measurement Key statements 1. Risk management moto: Si Vis Pacem Para Belum 1. Awareness 2. Prevention 3
Smart Services for Ad Hoc Databases University of Washington
Matrajt, Graciela
data-base from lists of addresses of nearby schools, locations of resources (e.g., ambulances), and contact information for emergency workers. · A consulting business analyst assembles an ad hoc data- base of commercial database management systems are prohibitive, especially without access to dedicated IT staff
Fusion for AdS/CFT boundary S-matrices
Rafael I. Nepomechie; Rodrigo A. Pimenta
2015-09-14T23:59:59.000Z
We propose a fusion formula for AdS/CFT worldsheet boundary S-matrices. We show that, starting from the fundamental Y=0 boundary S-matrix, this formula correctly reproduces the two-particle bound-state boundary S-matrices.
Adding Semantics to Data-Driven Paraphrasing Ellie Pavlick1
Plotkin, Joshua B.
minimal/significant husband/marry to found/party clean/cleanse tower/building boy/young girl oil/oil priceAdding Semantics to Data-Driven Paraphrasing Ellie Pavlick1 Johan Bos2 Malvina Nissim2 Charley (Figure 1). In contrast, data-driving paraphrasing typically sidesteps de- veloping a clear definition
Reducing the Energy Drain in Multihop Ad Hoc Geraud Allard
Mans, Bernard
that save energy of nodes with low battery but also allow the network to handle more flows. I. INTRODUCTION-efficient routing for Multihop Ad Hoc Networks (MANET) look at extend- ing battery life by minimizing the cost's shortest path algorithm in which we integrate the notion of remaining energy in order to satisfy flow
Real-Time Bid Optimization for Group-Buying Ads
Balakrishnan, Raju
2012-01-01T23:59:59.000Z
Group-buying ads seeking a minimum number of customers before the deal expiry are increasingly used by the daily-deal providers. Unlike the traditional web ads, the advertiser's profits for group-buying ads depends on the time to expiry and additional customers needed to satisfy the minimum group size. Since both these quantities are time-dependent, optimal bid amounts to maximize profits change with every impression. Consequently, traditional static bidding strategies are far from optimal. Instead, bid values need to be optimized in real-time to maximize expected bidder profits. This online optimization of deal profits is made possible by the advent of ad exchanges offering real-time (spot) bidding. To this end, we propose a real-time bidding strategy for group-buying deals based on the online optimization of bid values. We derive the expected bidder profit of deals as a function of the bid amounts, and dynamically vary bids to maximize profits. Further, to satisfy time constraints of the online bidding, we ...
Energy-Efficient Topology Control in Cooperative Ad Hoc Networks
Wang, Yu
Energy-Efficient Topology Control in Cooperative Ad Hoc Networks Ying Zhu, Minsu Huang, Siyuan Chen cooperative energy spanners in which the energy efficiency of individual paths are guaranteed. Both proposed of cooperative communication in various wireless network applications: energy efficient routing [23], [24], [25
Limited Flooding Protocol for Mobile Ad hoc Networks Mieso Denko
Goddard, Wayne
Limited Flooding Protocol for Mobile Ad hoc Networks Mieso Denko Department of Computing propose a multipath routing protocol called Limited Flooding. The protocol is fully reactive and does not entail the compu- tation of routing tables. It uses the basic features of flooding but restricts packet
Topping Turbines: Adding New Life to Older Plants
Cadrecha, M.
1984-01-01T23:59:59.000Z
the Sixth Annual Industrial Energy Technology Conference Volume II, Houston, TX, April 15-18, 1984 TOPPING TURBINES: ADDING NEW LIFE TO OLDER PLANTS Manuel Cadrecha, Ebasco Services, Inc., Atlanta. Georgia ARSTRlICT Ane~istingpower plant can be repowered...
California at Riverside, University of
Xylose Monomer and Oligomer Yields for Uncatalyzed Hydrolysis of Sugarcane Bagasse Hemicellulose of varying sugarcane bagasse concentrations on xylose monomer and oligomer yields was experimentally measured
Barnette, Daniel W. (Veguita, NM)
2002-01-01T23:59:59.000Z
The present invention provides a method of grid generation that uses the geometry of the problem space and the governing relations to generate a grid. The method can generate a grid with minimized discretization errors, and with minimal user interaction. The method of the present invention comprises assigning grid cell locations so that, when the governing relations are discretized using the grid, at least some of the discretization errors are substantially zero. Conventional grid generation is driven by the problem space geometry; grid generation according to the present invention is driven by problem space geometry and by governing relations. The present invention accordingly can provide two significant benefits: more efficient and accurate modeling since discretization errors are minimized, and reduced cost grid generation since less human interaction is required.
Steam generator support system
Moldenhauer, James E. (Simi Valley, CA)
1987-01-01T23:59:59.000Z
A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances.
Steam generator support system
Moldenhauer, J.E.
1987-08-25T23:59:59.000Z
A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source is disclosed. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances. 4 figs.
Comparison of Fission Product Yields and Their Impact
S. Harrison
2006-02-01T23:59:59.000Z
This memorandum describes the Naval Reactors Prime Contractor Team (NRPCT) Space Nuclear Power Program (SNPP) interest in determining the expected fission product yields from a Prometheus-type reactor and assessing the impact of these species on materials found in the fuel element and balance of plant. Theoretical yield calculations using ORIGEN-S and RACER computer models are included in graphical and tabular form in Attachment, with focus on the desired fast neutron spectrum data. The known fission product interaction concerns are the corrosive attack of iron- and nickel-based alloys by volatile fission products, such as cesium, tellurium, and iodine, and the radiological transmutation of krypton-85 in the coolant to rubidium-85, a potentially corrosive agent to the coolant system metal piping.
Fusion neutron yield from high intensity laser-cluster interaction
Davis, J.; Petrov, G.M.; Velikovich, A.L. [Naval Research Laboratory, Plasma Physics Division, 4555 Overlook Avenue SW, Washington, DC 20375 (United States)
2006-06-15T23:59:59.000Z
The fusion neutron yield from a compact neutron source is studied. Laser-irradiated deuterium clusters serve as a precursor of high-energy deuterium ions, which react with the walls of a fusion reaction chamber and produce copious amounts of neutrons in fusion reactions. The explosion of deuterium clusters with initial radius of 50-200 A irradiated by a subpicosecond laser with intensity of 10{sup 16} W/cm{sup 2} is examined theoretically. We studied the conversion efficiency of laser energy to ion kinetic energy, the mean and maximum ion kinetic energy, and ion energy distribution function by a molecular dynamics model. A yield of {approx}10{sup 5}-10{sup 6} neutrons/J is obtainable for a peak laser intensity of 10{sup 16}-10{sup 17} W/cm{sup 2} and clusters with an initial radius of 200-400 A.
Electrokinetic Power Generation from Liquid Water Microjets
Duffin, Andrew M.; Saykally, Richard J.
2008-02-15T23:59:59.000Z
Although electrokinetic effects are not new, only recently have they been investigated for possible use in energy conversion devices. We have recently reported the electrokinetic generation of molecular hydrogen from rapidly flowing liquid water microjets [Duffin et al. JPCC 2007, 111, 12031]. Here, we describe the use of liquid water microjets for direct conversion of electrokinetic energy to electrical power. Previous studies of electrokinetic power production have reported low efficiencies ({approx}3%), limited by back conduction of ions at the surface and in the bulk liquid. Liquid microjets eliminate energy dissipation due to back conduction and, measuring only at the jet target, yield conversion efficiencies exceeding 10%.
Energy Science and Technology Software Center (OSTI)
003027MLTPL00 Network Traffic Generator for Low-rate Small Network Equipment Software http://eln.lbl.gov/sne_traffic_gen.html
Renewable Electricity Generation
None
2012-09-01T23:59:59.000Z
This document highlights DOE's Office of Energy Efficiency and Renewable Energy's advancements in renewable electricity generation technologies including solar, water, wind, and geothermal.
Fourth Generation Majorana Neutrinos
Alexander Lenz; Heinrich Päs; Dario Schalla
2012-05-02T23:59:59.000Z
We investigate the possibility of a fourth sequential generation in the lepton sector. Assuming neutrinos to be Majorana particles and starting from a recent - albeit weak - evidence for a non-zero admixture of a fourth generation neutrino from fits to weak lepton and meson decays we discuss constraints from neutrinoless double beta decay, radiative lepton decay and like-sign dilepton production at hadron colliders. Also an idea for fourth generation neutrino mass model building is briefly outlined. Here we soften the large hierarchy of the neutrino masses within an extradimensional model that locates each generation on different lepton number violating branes without large hierarchies.
Broader source: Energy.gov [DOE]
The amount of electricity generated by the wind industry started to grow back around 1999, and since 2007 has been increasing at a rapid pace.
Hydrogen Generation for Refineries
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Single Cycle Shown for ATB SteamCarbon 3 * ATB reforming * Steamcarbon 3 * Syngas generated during reforming * 70% H 2 * 20% CO * Syngas composition agrees with...
Bushland Management For Water Yield: Prospects for Texas.
McCarl, Bruce A.; Griffin, Ronald C.; Kaiser, Ronald A.; Freeman, Lansingh S.; Blackburn, Wilbert H.; Jordan, Wayne R.
1987-01-01T23:59:59.000Z
[Blank Page in Original Bulletin] BRUSHLAND MANAGEMENT FOR WATER YIELD: PROSPECTS FOR TEXAS Bruce A. McCarl Professor- Agricultural Economics Ronald C. Griffin Associate Professor- Agricultural Economics Ronald A. Kaiser Assistant Professor... management. The main categories of these actions are a) continue current policy-no new initiatives; b) subsidize brush management through low-interest loans; c) cost share with those managing brush; d) refine property rights to resultant water so...
The Effect of Sulphur on Yield of Certain Crops.
Reynolds, E. B. (Elbert Brunner)
1930-01-01T23:59:59.000Z
TFXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIRECTOR College Station, Brazos County, Texas BUL - LETIN NO. 408 FEBRUARY, 1930 DIVISION OF AGRONOMY THE EFFECT OF SULPHUR ON YIELD OF CERTAIN CROPS -- AGRICULTURAL AND MECHANICAL.... H. ROGERS, Feed Inspector W. H. WOOD, Feed Inspector I<. I,. KIRKLAND. B. S., Fred Inspector . W. D. NORTHCUTT, JR., B. S., Feed Inspector SIDNEY D. REYNOLDS, JR., Feed Inspector P. A. MOORE, Feed Inspector SUBSTATIONS No. 1, Beeville, Bee...
Direct measurement of yield stress of discrete materials
S. H. Ebrahimnazhad Rahbari; J. Vollmer; S. Herminghaus; M. Brinkmann
2012-06-09T23:59:59.000Z
We present a novel computational method for direct measurement of yield stress of discrete materials. The method is well-suited for the measurement of jamming phase diagram of a wide range of discrete particle systems such as granular materials, foams, and colloids. We further successfully apply the method to evaluate the jamming phase diagram of wet granular material in order to demonstrates the applicability of the model.
Pulse Radiolysis of Gases H atom yields, OH reactions,
PULSE RADIOLYSIS OP GASES H atom yields, OH reactions, and kinetics of H2S systems Ole John Nielsen, M, in the reaction OH + OH + M Â· H2O2 + M. 3) In the H2S systems the HS extinction coefficient determined: k(H + H2S Â· H2 + HS) = 4-6 x 108 M ^ s " 1 k(HS + HS Â· products) = (1.9 Â± 0.1) x io1 0 M ^ s " 1
Symmetry relations in charmless B{yields}PPP decays
Gronau, Michael; Rosner, Jonathan L. [Department of Physics, Technion-Israel Institute of Technology, Technion City, 32000 Haifa (Israel); Enrico Fermi Institute and Department of Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 (United States)
2005-11-01T23:59:59.000Z
Strangeness-changing decays of B mesons to three-body final states of pions and kaons are studied, assuming that they are dominated by a {delta}I=0 penguin amplitude with flavor structure b{yields}s. Numerous isospin relations for B{yields}K{pi}{pi} and for underlying quasi-two-body decays are compared successfully with experiment, in some cases resolving ambiguities in fitting resonance parameters. The only exception is a somewhat small branching ratio noted in B{sup 0}{yields}K*{sup 0}{pi}{sup 0}, interpreted in terms of destructive interference between a penguin amplitude and an enhanced electroweak penguin contribution. Relations for B decays into three kaons are derived in terms of final states involving K{sub S} or K{sub L}, assuming that {phi}K-subtracted decay amplitudes are symmetric in K and K, as has been observed experimentally. Rates due to nonresonant backgrounds are studied using a simple model, which may reduce discrete ambiguities in Dalitz plot analyses.
Reduced yield stress for zirconium exposed to iodine: Reactive force field simulation
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Rossi, Matthew L.; Taylor, Christopher D.; van Duin, Adri C.T.
2014-11-04T23:59:59.000Z
Iodine-induced stress-corrosion cracking (ISCC), a known failure mode for nuclear fuel cladding, occurs when iodine generated during the irradiation of a nuclear fuel pellet escapes the pellet through diffusion or thermal cracking and chemically interacts with the inner surface of the clad material, inducing a subsequent effect on the cladding’s resistance to mechanical stress. To complement experimental investigations of ISCC, a reactive force field (ReaxFF) compatible with the Zr-I chemical and materials systems has been developed and applied to simulate the impact of iodine exposure on the mechanical strength of the material. The study shows that the material’s resistance tomore »stress (as captured by the yield stress of a high-energy grain boundary) is related to the surface coverage of iodine, with the implication that ISCC is the result of adsorption-enhanced decohesion.« less
MEASUREMENT OF THE SECONDARY EMISSION YIELD OF A THIN DIAMOND WINDOW IN TRANSMISSION MODE.
CHANG, X.; RAO, T.; SMEDLEY, J.; ET AL.
2005-05-16T23:59:59.000Z
The secondary emission enhanced photoinjector (SEEP) is a promising new approach to the generation of high-current, high-brightness electron beams. A low current primary electron beam with energy of a few thousand electron-volts strikes a specially prepared diamond window which emits secondary electrons with a current two orders of magnitude higher. The secondary electrons are created at the back side of the diamond and drift through the window under the influence of a strong electrical field. A hydrogen termination at the exit surface of the window creates a negative electron affinity (NEA) which allows the electrons to leave the diamond. An experiment was performed to measure the secondary electron yield and other properties. The results are discussed in this paper.
Reaching High-Yield Fusion with a Slow Plasma Liner Compressing a Magnetized Target
Ryutov, D D; Parks, P B
2008-03-18T23:59:59.000Z
Dynamics of the compression of a magnetized plasma target by a heavy liner made of partially ionized high high-Z material is discussed. A 'soft-landing' (shockless) mode of the liner deceleration is analyzed. Conclusion is drawn that such mode is possible for the liners whose thickness at the time of the first contact with the target is smaller than, roughly, 10% of the initial (un-compressed) target radius. A combination of the plasma liner with one or two glide cones allows for a direct access to the area near the center of the reactor chamber. One can then generate plasma target inside the plasma liner at the optimum time. The other advantage of the glide cones is that they can be used to deliver additional fuel to the center of the target near the point of a maximum compression and thereby increase the fusion yield.
Next-generation transcriptome assembly
Martin, Jeffrey A.
2012-01-01T23:59:59.000Z
technologies - the next generation. Nat Rev Genet 11, 31-algorithms for next-generation sequencing data. Genomicsassembly from next- generation sequencing data. Genome Res
Desloges, J.R. (Univ. of Toronto, Ontario (Canada))
1994-05-01T23:59:59.000Z
Lacustrine sediments deposited in three small glacier-fed lakes of the southern Canadian Cordillera are derived primarily from subglacial erosion and delivered via short proglacial streams or by direct melting and calving of cirque glaciers. Sediment transport and deposition during early summer is controlled by runoff-generated bottom currents and in the late summer through winter by settling from suspension. This forms distinct rhythmic laminations of silt and clay in distal lake areas. Cesium-137 content in all three lakes indicates that these are varve sediments. Time series of varve thickness covering the interval 1863 to present show distinct declines in sediment yield from 310 to less than 150 t km[sup [minus]2] a[sup [minus]1]. The decline is related to sediment exhaustion following glacier retreat from Little Ice Age maxima and the opening of intervening sediment storage sites. Annual varve thickness is significantly related to fluctuations in summer or late summer temperature highlighting the importance of ice ablation, melt-water runoff, and subglacial sediment sources in controlling deposition rates. Singular climate events, such as autumn storms provide distinctive sedimentary signatures in the varve record. Reconstructed sediment yield for the Little Ice Age is as much as 100% greater than the average Holocene rate. 39 refs., 8 figs., 2 tabs.
Power control in reactive routing protocol for Mobile Ad Hoc Network
Heni, Maher
2012-01-01T23:59:59.000Z
The aim of this work is to change the routing strategy of AODV protocol (Ad hoc On Demand Vector) in order to improve the energy consumption in mobile ad hoc networks (MANET). The purpose is to minimize the regular period of HELLO messages generated by the AODV protocol used for the research, development and maintenance of routes. This information is useful to have an idea about battery power levels of different network hosts. After storing this information, the node elect the shortest path following the classical model used this information to elect safest path (make a compromise) in terms of energy. Transmitter node does not select another node as its battery will be exhausted soon. Any node of the network can have the same information's about the neighborhoods as well as other information about the energy level of the different terminal to avoid routing using a link that will be lost due to an exhausted battery of a node in this link. Analytical study and simulations by Jist/SWANS have been conducted to no...
Enhanced metabolite generation
Chidambaram, Devicharan (Middle Island, NY)
2012-03-27T23:59:59.000Z
The present invention relates to the enhanced production of metabolites by a process whereby a carbon source is oxidized with a fermentative microbe in a compartment having a portal. An electron acceptor is added to the compartment to assist the microbe in the removal of excess electrons. The electron acceptor accepts electrons from the microbe after oxidation of the carbon source. Other transfers of electrons can take place to enhance the production of the metabolite, such as acids, biofuels or brewed beverages.
A Study to Determine the Energy Impact of Adding Polarshield to Air Conditioning Systems
Cromer, C. J.
2001-01-01T23:59:59.000Z
. COA was added, one on a 5 ton older unit where 2.5 oz. COA was added, and a third on the same 5 ton unit where an additional 2.5 oz. COA was added to total 5.0 oz added to the system. The heat and humidity loads were carefully held constant...
1 Introduzione 5 2 La Fisica dei Quark Pesanti ad HERA 7
calorimetro ad uranio--scintillatore (CAL) . . . . . . . . . . . . . . . 35 4.3.1 Risoluzione energetica e
Non-extended phase space thermodynamics of Lovelock AdS black holes in grand canonical ensemble
Mo, Jie-Xiong
2015-01-01T23:59:59.000Z
Recently, extended phase space thermodynamics of Lovelock AdS black holes has been of great interest. To provide insight from a different perspective and gain a unified phase transition picture, non-extended phase space thermodynamics of $(n+1)$-dimensional charged topological Lovelock AdS black holes is investigated detailedly in the grand canonical ensemble. Specifically, the specific heat at constant electric potential is calculated and phase transition in the grand canonical ensemble is discussed. To probe the impact of the various parameters, we utilize the control variate method and solve the phase transition condition equation numerically for the case $k=1,-1$. There are two critical points for the case $n=6,k=1$ while there is only one for other cases. For $k=0$, there exists no phase transition point. To figure out the nature of phase transition in the grand canonical ensemble, we carry out an analytic check of the analog form of Ehrenfest equations proposed by Banerjee et al. It is shown that Lovelo...
AdS-plane wave and pp-wave solutions of generic gravity theories
Metin Gurses; Tahsin Cagri Sisman; Bayram Tekin
2014-11-05T23:59:59.000Z
We construct the AdS-plane wave solutions of generic gravity theory built on the arbitrary powers of the Riemann tensor and its derivatives in analogy with the pp-wave solutions. In constructing the wave solutions of the generic theory, we show that the most general two tensor built from the Riemann tensor and its derivatives can be written in terms of the traceless-Ricci tensor. Quadratic gravity theory plays a major role; therefore, we revisit the wave solutions in this theory. As examples to our general formalism, we work out the six-dimensional conformal gravity and its nonconformal deformation as well as the tricritical gravity, the Lanczos-Lovelock theory, and string-generated cubic curvature theory.
EXPERIMENT 5101 STANDARD NAVY YIELD TRIAL PLANTING DATE 06/01/05 ENTRY NAMES NO. YIELD CWT 100 SEED-242 NAVY GENTEC, VISTA 23 31.6 19.9 44.0 96.2 3.0 48.1 4.0 N00762 VISTA/MACKINAC//N94080 3 31.5 18.6 43;EXPERIMENT 5101 STANDARD NAVY YIELD TRIAL PLANTING DATE 06/01/05 ENTRY NAMES NO. YIELD CWT 100 SEED DAYS
Prescott, D.S.; Schober, R.K.; Beller, J.
1992-03-17T23:59:59.000Z
An improved solid aerosol generator used to produce a gas borne stream of dry, solid particles of predetermined size and concentration is disclosed. The improved solid aerosol generator nebulizes a feed solution of known concentration with a flow of preheated gas and dries the resultant wet heated aerosol in a grounded, conical heating chamber, achieving high recovery and flow rates. 2 figs.
Contracting for wind generation
Newbery, David
The UK Government proposes offering long-term Feed-in-Tariffs (FiTs) to low-carbon generation to reduce risk and encourage new entrants. Their preference is for a Contract-for-Difference (CfD) or a premium FiT (pFiT) for all generation regardless...
Internal split field generator
Thundat; Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)
2012-01-03T23:59:59.000Z
A generator includes a coil of conductive material. A stationary magnetic field source applies a stationary magnetic field to the coil. An internal magnetic field source is disposed within a cavity of the coil to apply a moving magnetic field to the coil. The stationary magnetic field interacts with the moving magnetic field to generate an electrical energy in the coil.
Laser beam generating apparatus
Warner, B.E.; Duncan, D.B.
1994-02-15T23:59:59.000Z
Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus is described. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 7 figures.
Laser beam generating apparatus
Warner, B.E.; Duncan, D.B.
1993-12-28T23:59:59.000Z
Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 11 figures.
Improved solid aerosol generator
Prescott, D.S.; Schober, R.K.; Beller, J.
1988-07-19T23:59:59.000Z
An improved solid aerosol generator used to produce a gas borne stream of dry, solid particles of predetermined size and concentration. The improved solid aerosol generator nebulizes a feed solution of known concentration with a flow of preheated gas and dries the resultant wet heated aerosol in a grounded, conical heating chamber, achieving high recovery and flow rates. 2 figs.
Measurement of the Fractional Thermonuclear Neutron Yield during Deuterium Neutral-Beam Injection into Deuterium Plasmas
Emulating maize yields from global gridded crop models using statistical estimates
Blanc, E.
This study estimates statistical models emulating maize yield responses to changes in temperature and
Some Recent Progress in AdS/CFT
John H. Schwarz
2010-06-08T23:59:59.000Z
Much of modern string theory research concerns AdS/CFT duality, or more generally, gauge/gravity duality. The main subjects are a) Testing and understanding such dualities by exploring how they work for systems with a lot of supersymmetry b) Constructing and exploring approximate string theory duals of QCD c) Applying gauge/gravity duality to other areas of physics such as condensed matter and nuclear physics. I will briefly discuss the first topic.
Organic Aerosol Component (OACOMP) Value-Added Product Report
Fast, J; Zhang, Q; Tilp, A; Shippert, T; Parworth, C; Mei, F
2013-08-23T23:59:59.000Z
Significantly improved returns in their aerosol chemistry data can be achieved via the development of a value-added product (VAP) of deriving OA components, called Organic Aerosol Components (OACOMP). OACOMP is primarily based on multivariate analysis of the measured organic mass spectral matrix. The key outputs of OACOMP are the concentration time series and the mass spectra of OA factors that are associated with distinct sources, formation and evolution processes, and physicochemical properties.
Shuchi Energy Ad Promotions P Ltd | Open Energy Information
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ARM Value-Added Cloud Products: Description and Status
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A Platform for Implementing Secure Wireless Ad Hoc Networks
Farkas, Gyula; Haller, Piroska
2010-01-01T23:59:59.000Z
We propose a new platform for implementing secure wireless ad hoc networks. Our proposal is based on a modular architecture, with the software stack constructed directly on the Ethernet layer. Within our platform we use a new security protocol that we designed to ensure mutual authentication between nodes and a secure key exchange. The correctness of the proposed security protocol is ensured by Guttman's authentication tests.
Yield improvement and defect reduction in steel casting
Kent Carlson
2004-03-16T23:59:59.000Z
This research project investigated yield improvement and defect reduction techniques in steel casting. Research and technology development was performed in the following three specific areas: (1) Feeding rules for high alloy steel castings; (2) Unconventional yield improvement and defect reduction techniques--(a) Riser pressurization; and (b) Filling with a tilting mold; and (3) Modeling of reoxidation inclusions during filling of steel castings. During the preparation of the proposal for this project, these areas were identified by the High Alloy Committee and Carbon and Low Alloy Committee of the Steel Founders' Society of America (SFSA) as having the highest research priority to the steel foundry industry. The research in each of the areas involved a combination of foundry experiments, modeling and simulation. Numerous SFSA member steel foundries participated in the project through casting trials and meetings. The technology resulting from this project will result in decreased scrap and rework, casting yield improvement, and higher quality steel castings produced with less iteration. This will result in considerable business benefits to steel foundries, primarily due to reduced energy and labor costs, increased capacity and productivity, reduced lead-time, and wider use and application of steel castings. As estimated using energy data provided by the DOE, the technology produced as a result of this project will result in an energy savings of 2.6 x 10{sup 12} BTU/year. This excludes the savings that were anticipated from the mold tilting research. In addition to the energy savings, and corresponding financial savings this implies, there are substantial environmental benefits as well. The results from each of the research areas listed above are summarized.
Leung, Ka-Ngo; Lou, Tak Pui
2005-03-22T23:59:59.000Z
A compact neutron generator has at its outer circumference a toroidal shaped plasma chamber in which a tritium (or other) plasma is generated. A RF antenna is wrapped around the plasma chamber. A plurality of tritium ion beamlets are extracted through spaced extraction apertures of a plasma electrode on the inner surface of the toroidal plasma chamber and directed inwardly toward the center of neutron generator. The beamlets pass through spaced acceleration and focusing electrodes to a neutron generating target at the center of neutron generator. The target is typically made of titanium tubing. Water is flowed through the tubing for cooling. The beam can be pulsed rapidly to achieve ultrashort neutron bursts. The target may be moved rapidly up and down so that the average power deposited on the surface of the target may be kept at a reasonable level. The neutron generator can produce fast neutrons from a T-T reaction which can be used for luggage and cargo interrogation applications. A luggage or cargo inspection system has a pulsed T-T neutron generator or source at the center, surrounded by associated gamma detectors and other components for identifying explosives or other contraband.
A Natural Language for AdS/CFT Correlators
Fitzpatrick, A.Liam; /Boston U.; Kaplan, Jared; /SLAC; Penedones, Joao; /Perimeter Inst. Theor. Phys.; Raju, Suvrat; /Harish-Chandra Res. Inst.; van Rees, Balt C.; /YITP, Stony Brook
2012-02-14T23:59:59.000Z
We provide dramatic evidence that 'Mellin space' is the natural home for correlation functions in CFTs with weakly coupled bulk duals. In Mellin space, CFT correlators have poles corresponding to an OPE decomposition into 'left' and 'right' sub-correlators, in direct analogy with the factorization channels of scattering amplitudes. In the regime where these correlators can be computed by tree level Witten diagrams in AdS, we derive an explicit formula for the residues of Mellin amplitudes at the corresponding factorization poles, and we use the conformal Casimir to show that these amplitudes obey algebraic finite difference equations. By analyzing the recursive structure of our factorization formula we obtain simple diagrammatic rules for the construction of Mellin amplitudes corresponding to tree-level Witten diagrams in any bulk scalar theory. We prove the diagrammatic rules using our finite difference equations. Finally, we show that our factorization formula and our diagrammatic rules morph into the flat space S-Matrix of the bulk theory, reproducing the usual Feynman rules, when we take the flat space limit of AdS/CFT. Throughout we emphasize a deep analogy with the properties of flat space scattering amplitudes in momentum space, which suggests that the Mellin amplitude may provide a holographic definition of the flat space S-Matrix.
Laser Seeding Yields High-Power Coherent Terahertz Radiation
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Laser Seeding Yields High-Power Coherent Terahertz Radiation
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville PowerTariff Pages default Sign In AboutIsrelocatesLaser Seeding Yields High-Power Coherent
Laser Seeding Yields High-Power Coherent Terahertz Radiation
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville PowerTariff Pages default Sign In AboutIsrelocatesLaser Seeding Yields High-Power CoherentLaser Seeding
Laser fusion experiment yields record energy at NIF | National Nuclear
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Yield enhancement of VLSI/WSI array systems
Koo, Peter Yunemo
1989-01-01T23:59:59.000Z
Xs X7 F1g. 12 Detection nf br1ciging faults between two output 11nes. Table V. Statistics of the proposed approach for 5-3-3 fault patter&i PLA input product output PCD, PD, PCD?PD, 3 F, adr4 lines lines lines 92. 13 0. 33 96 04 1 Or (%) 94... single wafer, tllils avoiding lugli manufacturing costs. In this research, vield enhancement of two typical VLSI/IVSI array systems, PLAs aud Pipeline 4rrays, is considered Yield enhancement of PLAs tluough reconfiguration is an important issue...
Potential Yield Mapping of Dedicated Energy Crops | Department of Energy
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
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Lothian, Josh [ORNL; Powers, Sarah S [ORNL; Sullivan, Blair D [ORNL; Baker, Matthew B [ORNL; Schrock, Jonathan [ORNL; Poole, Stephen W [ORNL
2013-12-01T23:59:59.000Z
The benchmarking effort within the Extreme Scale Systems Center at Oak Ridge National Laboratory seeks to provide High Performance Computing benchmarks and test suites of interest to the DoD sponsor. The work described in this report is a part of the effort focusing on graph generation. A previously developed benchmark, SystemBurn, allowed the emulation of dierent application behavior profiles within a single framework. To complement this effort, similar capabilities are desired for graph-centric problems. This report examines existing synthetic graph generator implementations in preparation for further study on the properties of their generated synthetic graphs.
Synthetic guide star generation
Payne, Stephen A.; Page, Ralph H.; Ebbers, Christopher A.; Beach, Raymond J.
2004-03-09T23:59:59.000Z
A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operating between 880 nm and 960 nm and a fiber laser operating between 1524 nm and 1650 nm. A frequency-conversion system mixes the radiation and generates light at a frequency at or near 589 nm. A system directs the light at a frequency at or near 589 nm toward the celestial object and provides synthetic guide star generation.
Synthetic guide star generation
Payne, Stephen A. (Castro Valley, CA) [Castro Valley, CA; Page, Ralph H. (Castro Valley, CA) [Castro Valley, CA; Ebbers, Christopher A. (Livermore, CA) [Livermore, CA; Beach, Raymond J. (Livermore, CA) [Livermore, CA
2008-06-10T23:59:59.000Z
A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a frequency at or near 1583 nm. The lasing system includes a fiber laser operating between 880 nm and 960 nm and a fiber laser operating between 1524 nm and 1650 nm. A frequency-conversion system mixes the radiation and generates light at a frequency at or near 589 nm. A system directs the light at a frequency at or near 589 nm toward the celestial object and provides synthetic guide star generation.
R AdResource Adequacy Advisory CommitteeAdvisory Committee
. Non-NW wind in the NW 10. Generating resourcesg 11. SW market availability 12. Demand response updates Need potential markets for Idaho 13 #12;Demand Response and Distributed Generation: In progress Need aggregate SW market on and off peak for winter and summer Need within region market
Derivation of the action and symmetries of the q-deformed AdS_5 x S^5 superstring
Francois Delduc; Marc Magro; Benoit Vicedo
2014-09-01T23:59:59.000Z
We recently proposed an integrable q-deformation of the AdS_5 x S^5 superstring action. Here we give details on the hamiltonian origin and construction of this deformation. The procedure is a generalization of the one previously developed for deforming principal chiral and symmetric space sigma-models. We also show that the original psu(2,2|4) symmetry is replaced in the deformed theory by a classical analog of the quantum group U_q(psu(2,2|4)) with q real. The relation between q and the deformation parameter entering the action is given. The framework used to derive the deformation also enables to prove that at the hamiltonian level, the "maximal deformation" limit corresponds to an undeformed semi-symmetric space sigma-model with bosonic part dS_5 x H^5. Finally, we discuss the various freedoms in the construction.
On the Central Charge of Spacetime Current Algebras and Correlators in String Theory on AdS3
Porrati, Massimo
2015-01-01T23:59:59.000Z
Spacetime Virasoro and affine Lie algebras for strings propagating in AdS3 are known to all orders in $\\alpha'$. The central extension of such algebras is a string vertex, whose expectation value can depend on the number of long strings present in the background but should be otherwise state-independent. In hep-th/0106004, on the other hand, a state-dependent expectation value was found. Another puzzling feature of the theory is lack of cluster decomposition property in certain connected correlators. This note shows that both problems can be removed by defining the free energy of the spacetime boundary conformal field theory as the Legendre transform of the formula proposed in the literature. This corresponds to pass from a canonical ensemble, where the number of fundamental strings that create the background can fluctuate, to a microcanonical one, where it is fixed.
A. Belhaj; M. Chabab; H. EL Moumni; K. Masmar; M. B. Sedra
2015-07-01T23:59:59.000Z
Interpreting the cosmological constant as a thermodynamic pressure and its conjugate quantity as a thermodynamic volume, we reconsider the investigation of P-V critical behaviors of (1+n)-dimensional topological AdS black holes in Lovelock-Born-Infeld gravity. In particular, we give an explicit expression of the universal number \\chi=\\frac{P_c v_c}{T_c} in terms of the space dimension $n$. Then, we examine the phase transitions at the critical points of such topological black holes for 6 \\leq n \\leq 11 as required by the physical condition of the thermodynamical quantities. More precisely, the Ehrenfest equations have been checked revealing that the black hole system undergoes a second phase transition at the critical points.
Non-perturbative Effects in AdS5 * S5 String Theory and d=4 SUSY Yang-Mills
Tom Banks; Michael B. Green
1998-06-10T23:59:59.000Z
We show that five-dimensional anti de-Sitter space remains a solution to low-energy type IIB supergravity when the leading higher-derivative corrections to the classical supergravity (which are non-perturbative in the string coupling) are included. Furthermore, at this order in the low energy expansion of the IIB theory the graviton two-point and three-point functions in $AdS_5 \\times S^5$ are shown not to be renormalized and a precise expression is obtained for the four-graviton and related S-matrix elements. By invoking Maldacena's conjectured connection between IIB superstring theory and supersymmetric Yang-Mills theory corresponding statements are obtained concerning correlation functions of the energy-momentum tensor and related operators in the large-N Yang-Mills theory. This leads to interesting non-perturbative statements and insights into the r\\^ole of instantons in the gauge theory.
Bound States, Yangian Symmetry and Classical r-matrix for the AdS5 x S5 Superstring
M de Leeuw
2009-10-06T23:59:59.000Z
We show that the recently found S-matrices describing the scattering of two-particle bound states of the light-cone string sigma model on AdS5 x S5 are compatible with Yangian symmetry. In case the invariance with respect to the centrally extended su(2|2) algebra is not sufficient to fully specify the scattering matrix, the requirement of Yangian symmetry provides an alternative to the Yang-Baxter equation and leads to a complete, up to an overall phase, determination of the S-matrix. We then compare the semi-classical limit of the bound state S-matrices with the universal classical r-matrix by Beisert and Spill evaluated in the corresponding bound state representations and find perfect agreement.
Fourth Generation Bound States
Koji Ishiwata; Mark B. Wise
2011-05-25T23:59:59.000Z
We investigate the spectrum and wave functions of {\\bar q}'q' bound states for heavy fourth generation quarks (q') that have a very small mixing with the three observed generations of standard model quarks. Such bound states come with different color, spin and flavor quantum numbers. Since the fourth generation Yukawa coupling, \\lambda_{q'}, is large we include all perturbative corrections to the potential between the heavy quark and antiquark of order \\lambda_{q'}^2N_c/16\\pi^2 where N_c is the number of colors, as well as relativistic corrections suppressed by (v/c)^2. We find that the lightest fourth generation quark masses for which a bound state exists for color octet states. For the the color singlet states, which always have a bound state, we analyze the influence that the Higgs couplings have on the size and binding energy of the bound states.
Vector generator scan converter
Moore, James M. (Livermore, CA); Leighton, James F. (Livermore, CA)
1990-01-01T23:59:59.000Z
High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O (input/output) channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardward for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold.
Vector generator scan converter
Moore, J.M.; Leighton, J.F.
1988-02-05T23:59:59.000Z
High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardware for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold. 7 figs.
Burra G. Sidharth
2010-03-11T23:59:59.000Z
Modifications in the energy momentum dispersion laws due to a noncommutative geometry, have been considered in recent years. We examine the oscillations of extended objects in this perspective and find that there is now a "generation" of energy.
Oscillating fluid power generator
Morris, David C
2014-02-25T23:59:59.000Z
A system and method for harvesting the kinetic energy of a fluid flow for power generation with a vertically oriented, aerodynamic wing structure comprising one or more airfoil elements pivotably attached to a mast. When activated by the moving fluid stream, the wing structure oscillates back and forth, generating lift first in one direction then in the opposite direction. This oscillating movement is converted to unidirectional rotational movement in order to provide motive power to an electricity generator. Unlike other oscillating devices, this device is designed to harvest the maximum aerodynamic lift forces available for a given oscillation cycle. Because the system is not subjected to the same intense forces and stresses as turbine systems, it can be constructed less expensively, reducing the cost of electricity generation. The system can be grouped in more compact clusters, be less evident in the landscape, and present reduced risk to avian species.
Generating electricity from viruses
Lee, Seung-Wuk
2013-10-31T23:59:59.000Z
Berkeley Lab's Seung-Wuk Lee discusses "Generating electricity from viruses" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas.
I. G. Knowles; T. Sjostrand; A. Blondel; A. Boehrer; C. D. Buchanan; D. G. Charlton; S. -L. Chu; S. Chun; G. Dissertori; D. Duchesneau; J. W. Gary; M. Gibbs; A. Grefrath; G. Gustafson; J. Hakkinen; K. Hamacher; K. Kato; L. Lonnblad; W. Metzger; R. Moller; T. Munehisa; R. Odorico; Y. Pei; G. Rudolph; S. Sarkar; M. H. Seymour; J. C. Thompson; S. Todorova; B. R. Webber
1996-01-04T23:59:59.000Z
This report is a survey on QCD Event Generator issues of relevance for LEP 2. It contains four main sections: a summary of experience from LEP 1, extrapolations to LEP 2 energies, Monte Carlo descriptions and standardization issues.
Contextualizing generative design
Arida, Saeed, 1977-
2004-01-01T23:59:59.000Z
Generative systems have been widely used to produce two- and three-dimensional constructs, in an attempt to escape from our preconceptions and pre-existing spatial language. The challenge is to use this mechanism in ...
Generating electricity from viruses
Lee, Seung-Wuk
2014-06-23T23:59:59.000Z
Berkeley Lab's Seung-Wuk Lee discusses "Generating electricity from viruses" in this Oct. 28, 2013 talk, which is part of a Science at the Theater event entitled Eight Big Ideas.
Local entropy generation analysis
Drost, M.K.; White, M.D.
1991-02-01T23:59:59.000Z
Second law analysis techniques have been widely used to evaluate the sources of irreversibility in components and systems of components but the evaluation of local sources of irreversibility in thermal processes has received little attention. While analytical procedures for evaluating local entropy generation have been developed, applications have been limited to fluid flows with analytical solutions for the velocity and temperature fields. The analysis of local entropy generation can be used to evaluate more complicated flows by including entropy generation calculations in a computational fluid dynamics (CFD) code. The research documented in this report consists of incorporating local entropy generation calculations in an existing CFD code and then using the code to evaluate the distribution of thermodynamic losses in two applications: an impinging jet and a magnetic heat pump. 22 refs., 13 figs., 9 tabs.
Uncertainty in Simulating Wheat Yields Under Climate Change
Asseng, S.; Ewert, F.; Rosenzweig, C.; Jones, J.W.; Hatfield, Jerry; Ruane, Alex; Boote, K. J.; Thorburn, Peter; Rotter, R.P.; Cammarano, D.; Brisson, N.; Basso, B.; Martre, P.; Aggarwal, P.K.; Angulo, C.; Bertuzzi, P.; Biernath, C.; Challinor, AJ; Doltra, J.; Gayler, S.; Goldberg, R.; Grant, Robert; Heng, L.; Hooker, J.; Hunt, L.A.; Ingwersen, J.; Izaurralde, Roberto C.; Kersebaum, K.C.; Mueller, C.; Naresh Kumar, S.; Nendel, C.; O'Leary, G.O.; Olesen, JE; Osborne, T.; Palosuo, T.; Priesack, E.; Ripoche, D.; Semenov, M.A.; Shcherbak, I.; Steduto, P.; Stockle, Claudio O.; Stratonovitch, P.; Streck, T.; Supit, I.; Tao, F.; Travasso, M.; Waha, K.; Wallach, D.; White, J.W.; Williams, J.R.; Wolf, J.
2013-09-01T23:59:59.000Z
Anticipating the impacts of climate change on crop yields is critical for assessing future food security. Process-based crop simulation models are the most commonly used tools in such assessments1,2. Analysis of uncertainties in future greenhouse gas emissions and their impacts on future climate change has been increasingly described in the literature3,4 while assessments of the uncertainty in crop responses to climate change are very rare. Systematic and objective comparisons across impact studies is difficult, and thus has not been fully realized5. Here we present the largest coordinated and standardized crop model intercomparison for climate change impacts on wheat production to date. We found that several individual crop models are able to reproduce measured grain yields under current diverse environments, particularly if sufficient details are provided to execute them. However, simulated climate change impacts can vary across models due to differences in model structures and algorithms. The crop-model component of uncertainty in climate change impact assessments was considerably larger than the climate-model component from Global Climate Models (GCMs). Model responses to high temperatures and temperature-by-CO2 interactions are identified as major sources of simulated impact uncertainties. Significant reductions in impact uncertainties through model improvements in these areas and improved quantification of uncertainty through multi-model ensembles are urgently needed for a more reliable translation of climate change scenarios into agricultural impacts in order to develop adaptation strategies and aid policymaking.
Nonproportionality in the scintillation light yield of bismuth germanate
Gentile, T R; Breuer, H; Chupp, T E; Coakley, K J; Cooper, R L; Nico, J S; O'Neill, B
2015-01-01T23:59:59.000Z
We present measurements of nonproportionality in the scintillation light yield of bismuth germanate (BGO) for gamma-rays with energies between 6 keV and 662 keV. The scintillation light was read out by avalanche photodiodes (APDs) with both the BGO crystals and APDs operated at a temperature of approximately 90 K. Data were obtained using radioisotope sources to illuminate both a single BGO crystal in a small test cryostat and a 12-element detector in a neutron radiative beta-decay experiment. In addition one datum was obtained in a 4.6 T magnetic field based on the bismuth K x-ray escape peak produced by a continuum of background gamma rays in this apparatus. These measurements and comparison to prior results were motivated by an experiment to study the radiative decay mode of the free neutron. The combination of data taken under different conditions yields a reasonably consistent picture for BGO nonproportionality that should be useful for researchers employing BGO detectors at low gamma ray energies.
Nonproportionality in the scintillation light yield of bismuth germanate
T. R. Gentile; M. J. Bales; H. Breuer; T. E. Chupp; K. J. Coakley; R. L. Cooper; J. S. Nico; B. O'Neill
2015-05-01T23:59:59.000Z
We present measurements of nonproportionality in the scintillation light yield of bismuth germanate (BGO) for gamma-rays with energies between 6 keV and 662 keV. The scintillation light was read out by avalanche photodiodes (APDs) with both the BGO crystals and APDs operated at a temperature of approximately 90 K. Data were obtained using radioisotope sources to illuminate both a single BGO crystal in a small test cryostat and a 12-element detector in a neutron radiative beta-decay experiment. In addition one datum was obtained in a 4.6 T magnetic field based on the bismuth K x-ray escape peak produced by a continuum of background gamma rays in this apparatus. These measurements and comparison to prior results were motivated by an experiment to study the radiative decay mode of the free neutron. The combination of data taken under different conditions yields a reasonably consistent picture for BGO nonproportionality that should be useful for researchers employing BGO detectors at low gamma ray energies.
MacDonald, P.E.; Shah, V.N.; Ward, L.W.; Ellison, P.G.
1996-04-01T23:59:59.000Z
A review and summary of the available information on steam generator tubing failures and the impact of these failures on plant safety is presented. The following topics are covered: pressurized water reactor (PWR), Canadian deuterium uranium (CANDU) reactor, and Russian water moderated, water cooled energy reactor (VVER) steam generator degradation, PWR steam generator tube ruptures, the thermal-hydraulic response of a PWR plant with a faulted steam generator, the risk significance of steam generator tube rupture accidents, tubing inspection requirements and fitness-for-service criteria in various countries, and defect detection reliability and sizing accuracy. A significant number of steam generator tubes are defective and are removed from service or repaired each year. This wide spread damage has been caused by many diverse degradation mechanisms, some of which are difficult to detect and predict. In addition, spontaneous tube ruptures have occurred at the rate of about one every 2 years over the last 20 years, and incipient tube ruptures (tube failures usually identified with leak detection monitors just before rupture) have been occurring at the rate of about one per year. These ruptures have caused complex plant transients which have not always been easy for the reactor operators to control. Our analysis shows that if more than 15 tubes rupture during a main steam line break, the system response could lead to core melting. Although spontaneous and induced steam generator tube ruptures are small contributors to the total core damage frequency calculated in probabilistic risk assessments, they are risk significant because the radionuclides are likely to bypass the reactor containment building. The frequency of steam generator tube ruptures can be significantly reduced through appropriate and timely inspections and repairs or removal from service.
Scapin, M; Dallocchio, A
2010-01-01T23:59:59.000Z
The unprecedented energy intensities of modern hadron accelerators yield special problems with the materials that are placed close to or into the high intensity beams. It is very difficult to predict structural efficiency and robustness accurately: beam-induced damage occurs in a regime where practical experience does not exist. This study is performed in order to estimate the damage on a copper component due to the impact with a 7 TeV proton beam generated by LHC. The case study represents an accidental case consequent to an abnormal release of the beam, in which 8 bunches irradiate the target directly. The energy delivered on the component is calculated using the FLUKA code and then used as input in the numerical simulations, that are carried out via the FEM code LS-DYNA. Different numerical models are realized trying to obtain the simplest model able to correctly describe the material response.
Injury and yield responses of peanuts to chronic doses of ozone in open-top field chambers
Heagle, A.S.; Letchworth, M.B.; Mitchell, C.A.
1983-01-01T23:59:59.000Z
Peanuts were exposed during 1979 and 1980 to concentrations of ozone (O/sub 3/) that spanned those that occur in ambient air of peanut production areas in the United States. The different concentrations were obtained by adding O/sub 3/ to the air of open-top field chambers for 7 hr per day from the seedling stage to harvest. Ozone at seasonal 7-hr per day concentrations (mean concentration for 7 hr per day during the seasonal exposure period) equal to, or greater than, the ambient concentration caused foliar injury and decreased shoot and root weight for both years. Seasonal 7-hr per day O/sub 3/ concentrations in ambient air at the field site near Raleigh, NC, were 0.052 and 0.056 ppM for 1979 (131 days) and 1980 (112 days), respectively. In 1979, marketable pod weight (yield) per plant at seasonal 7-hr per day O/sub 3/ concentrations of 0.049, 0.072, and 0.096 ppM was 0, 30, and 37% less, respectively, than for control plants in chambers that received charcoal-filtered air with a seasonal concentration of 0.026 ppM O/sub 3/. In 1980, yield at seasonal O/sub 3/ concentrations of 0.056, 0.076, 0.100, and 0.125 ppM was 14, 35, 52, and 72% less, respectively, than for the control treatment (0.025 ppM). Linear regression equations using data from 1979 and 1980 predicted yield losses of 17 and 21%, respectively, at a seasonal 7-hr per day mean O/sub 3/ concentration of 0.054 ppM. 13 references, 4 figures, 2 tables.
Calculated fission-fragment yield systematics in the region 74
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Möller, Peter; Randrup, Jørgen
2015-04-01T23:59:59.000Z
Background: In the seminal experiment by Schmidt et al. [Nucl. Phys. A 665, 221 (2000)] in which fission-fragment charge distributions were obtained for 70 nuclides, asymmetric distributions were seen above nucleon number A ? 226 and symmetric ones below. Because asymmetric fission had often loosely been explained as a preference for the nucleus to always exploit the extra binding of fragments near ¹³²Sn it was assumed that all systems below A ? 226 would fission symmetrically because available isotopes do not have a proton-to-neutron Z/N ratio that allows division into fragments near ¹³²Sn. But the finding by Andreyev et al.more »[Phys. Rev. Lett. 105, 252502 (2010)] did not conform to this expectation because the compound system ¹??Hg was shown to fission asymmetrically. It was suggested that this was a new type of asymmetric fission, because no strong shell effects occur for any possible fragment division. Purpose: We calculate a reference database for fission-fragment mass yields for a large region of the nuclear chart comprising 987 nuclides. A particular aim is to establish whether ¹??Hg is part of a contiguous region of asymmetric fission, and if so, its extent, or if not, in contrast to the actinides, there are scattered smaller groups of nuclei that fission asymmetrically in this area of the nuclear chart. Methods: We use the by now well benchmarked Brownian shape-motion method and perform random walks on the previously calculated five-dimensional potential-energy surfaces. The calculated shell corrections are damped out with energy according to a prescription developed earlier. Results: We have obtained a theoretical reference database of fission-fragment mass yields for 987 nuclides. These results show an extended region of asymmetric fission with approximate extension 74 ? Z ? 85 and 100 ? N ? 120. The calculated yields are highly variable. We show 20 representative plots of these variable features and summarize the main aspects of our results in terms of “nuclear-chart” plots showing calculated degrees of asymmetry versus N and Z. Conclusions: Experimental data in this region are rare: only ten or so yield distributions have been measured, some with very limited statistics. We agree with several measurements with higher statistics. Regions where there might be differences between our calculated results and measurements lie near the calculated transition line between symmetric and asymmetric fission. To draw more definite conclusions about the accuracy of the present implementation of the Brownian shape-motion approach in this region experimental data, with reliable statistics, for a fair number of suitably located additional nuclides are clearly needed. Because the nuclear potential-energy structure is so different in this region compared to the actinide region, additional experimental data together with fission theory studies that incorporate additional, dynamical aspects should provide much new insight.« less
Method and apparatus for sampling low-yield wells
Last, George V. (Richland, WA); Lanigan, David C. (Kennewick, WA)
2003-04-15T23:59:59.000Z
An apparatus and method for collecting a sample from a low-yield well or perched aquifer includes a pump and a controller responsive to water level sensors for filling a sample reservoir. The controller activates the pump to fill the reservoir when the water level in the well reaches a high level as indicated by the sensor. The controller deactivates the pump when the water level reaches a lower level as indicated by the sensors. The pump continuously activates and deactivates the pump until the sample reservoir is filled with a desired volume, as indicated by a reservoir sensor. At the beginning of each activation cycle, the controller optionally can select to purge an initial quantity of water prior to filling the sample reservoir. The reservoir can be substantially devoid of air and the pump is a low volumetric flow rate pump. Both the pump and the reservoir can be located either inside or outside the well.
Microscopic description of Cf-252 cold fission yields
M. Mirea; D. S. Delion; A. Sandulescu
2009-07-20T23:59:59.000Z
We investigate the cold fission of 252Cf within the two center shell model to compute the potential energy surface. The fission yields are estimated by using the semiclassical penetration approach. It turns out that the inner cold valley of the total potential energy is strongly connected with Z=50 magic number. The agreement with experimental values is very much improved only by considering mass and charge asymmetry degrees of freedom. Thus, indeed cold fission of 252Cf is a Sn-like radioactivity, related the other two "magic radioactivities", namely alpha-decay and heavy-cluster decay, called also Pb-like radioactivity. This calculation provides the necessary theoretical confidence to estimate the penetration cross section in producing superheavy nuclei, by using the inverse fusion process.
Microscopic description of Cf-252 cold fission yields
Mirea, M; Sandulescu, A
2009-01-01T23:59:59.000Z
We investigate the cold fission of 252Cf within the two center shell model to compute the potential energy surface. The fission yields are estimated by using the semiclassical penetration approach. It turns out that the inner cold valley of the total potential energy is strongly connected with Z=50 magic number. The agreement with experimental values is very much improved only by considering mass and charge asymmetry degrees of freedom. Thus, indeed cold fission of 252Cf is a Sn-like radioactivity, related the other two "magic radioactivities", namely alpha-decay and heavy-cluster decay, called also Pb-like radioactivity. This calculation provides the necessary theoretical confidence to estimate the penetration cross section in producing superheavy nuclei, by using the inverse fusion process.
Ad Lucem: Modeling of Market Transformation Pathways Workshop Agenda |
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Addendum Added to Innovative Demonstration of Geothermal Energy Production
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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 RankShale_Gas.pdfService on the TargetFY12 DOE -NAT IONA L S47.1 (June 2004) 1June|AD LUCEM
Some engineering properties of heavy concrete added silica fume
Akka?, Ay?e [Suleyman Demirel University Teknoloji Fakültesi, Isparta (Turkey); Ba?yi?it, Celalettin; Esen, Serap [Suleyman Demirel University, Mühendislik Fakültesi, Isparta (Turkey)
2013-12-16T23:59:59.000Z
Many different types of building materials have been used in building construction for years. Heavy concretes can be used as a building material for critical building as it can contain a mixture of many heavy elements. The barite itself for radiation shielding can be used and also in concrete to produce the workable concrete with a maximum density and adequate structural strength. In this study, some engineering properties like compressive strength, elasticity modules and flexure strength of heavy concretes’ added Silica fume have been investigated.
AD Hydro Power Ltd ADHPL | Open Energy Information
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 DeliciousPlasmaP a g eWorks - As Prepared forChoiceNEG Micon AVestasInformation 2-MOptions in theAD Hydro Power Ltd
Value Added Energy Information Systems VAEIS | Open Energy Information
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 DeliciousPlasmaP a g eWorks -09-0018-CXNuonYuchengRichlands,projectUrat Rear BannerUtilityVANEValue Added Energy
An Experiment with Digital Lighting in Adding Machine: A Musical
Esfandiary, Rana; Reaney, Mark
2014-01-01T23:59:59.000Z
of house position. Virtual scenic elements were Figure 1. Mr. Zero at the office. Note the animation clip of swirling numbers visible on the stage floor. by Rana Esfandiary and Mark Reaney an experiment with digital l ighting in Adding Machine: A... in this production was two pair of computers and digital projectors, one mounted house left, the other house right, from which lighting effects could be gener- ated in real time using a series of recorded video sequences and real-time video manipulation software...
Superconducting thermoelectric generator
Metzger, J.D.; El-Genk, M.S.
1994-01-01T23:59:59.000Z
Thermoelectricity is produced by applying a temperature differential to dissimilar electrically conducting or semiconducting materials, thereby producing a voltage that is proportional to the temperature difference. Thermoelectric generators use this effect to directly convert heat into electricity; however, presently-known generators have low efficiencies due to the production of high currents which in turn cause large resistive heating losses. Some thermoelectric generators operate at efficiencies between 4% and 7% in the 800{degrees} to 1200{degrees}C range. According to its major aspects and bradly stated, the present invention is an apparatus and method for producing electricity from heat. In particular, the invention is a thermoelectric generator that juxtaposes a superconducting material and a semiconducting material - so that the superconducting and the semiconducting materials touch - to convert heat energy into electrical energy without resistive losses in the temperature range below the critical temperature of the superconducting material. Preferably, an array of superconducting material is encased in one of several possible configurations within a second material having a high thermal conductivity, preferably a semiconductor, to form a thermoelectric generator.
Fischer, Noah A. [Los Alamos National Laboratory
2012-08-14T23:59:59.000Z
The reactor core input generator allows for MCNP input files to be tailored to design specifications and generated in seconds. Full reactor models can now easily be created by specifying a small set of parameters and generating an MCNP input for a full reactor core. Axial zoning of the core will allow for density variation in the fuel and moderator, with pin-by-pin fidelity, so that BWR cores can more accurately be modeled. LWR core work in progress: (1) Reflectivity option for specifying 1/4, 1/2, or full core simulation; (2) Axial zoning for moderator densities that vary with height; (3) Generating multiple types of assemblies for different fuel enrichments; and (4) Parameters for specifying BWR box walls. Fuel pin work in progress: (1) Radial and azimuthal zoning for generating further unique materials in fuel rods; (2) Options for specifying different types of fuel for MOX or multiple burn assemblies; (3) Additional options for replacing fuel rods with burnable poison rods; and (4) Control rod/blade modeling.
Petrick, Michael (Joliet, IL); Pierson, Edward S. (Chicago, IL); Schreiner, Felix (Mokena, IL)
1980-01-01T23:59:59.000Z
According to the present invention, coal combustion gas is the primary working fluid and copper or a copper alloy is the electrodynamic fluid in the MHD generator, thereby eliminating the heat exchangers between the combustor and the liquid-metal MHD working fluids, allowing the use of a conventional coalfired steam bottoming plant, and making the plant simpler, more efficient and cheaper. In operation, the gas and liquid are combined in a mixer and the resulting two-phase mixture enters the MHD generator. The MHD generator acts as a turbine and electric generator in one unit wherein the gas expands, drives the liquid across the magnetic field and thus generates electrical power. The gas and liquid are separated, and the available energy in the gas is recovered before the gas is exhausted to the atmosphere. Where the combustion gas contains sulfur, oxygen is bubbled through a side loop to remove sulfur therefrom as a concentrated stream of sulfur dioxide. The combustor is operated substoichiometrically to control the oxide level in the copper.
FIRST-GENERATION COLLEGE STUDENTS
Su, Xiao
FIRST-GENERATION COLLEGE STUDENTS PROGRAM AT SAN JOSÉ STATE UNIVERSITY INTERESTED IN PARTICIPATING OUR WEBSITE: sjsu.edu/studentaffairs/ current_students/first- generation/generate We are currently located in MOD A in the MOSAIC Cross- Cultural Center. Visit us today! WHAT IS GENERATE? GENERATE
Astroparticle yield and transport from extragalactic jet terminal shocks
Fabien Casse; Alexandre Marcowith
2004-11-15T23:59:59.000Z
The present paper deals with the yield and transport of high-energy particle within extragalactic jet terminal shocks, also known as hotspots. We investigate in some details the cosmic ray, neutrinos and high-energy photons yield in hotspots of powerful FRII radio-galaxies by scanning all known spatial transport regimes, adiabatic and radiative losses as well as Fermi acceleration process. Since both electrons and cosmic rays are prone to the same type of acceleration, we derive analytical estimates of the maximal cosmic ray energy attainable in both toroidal and poloidal magnetic field dominated shock structures by using observational data on synchrotron emission coming from various hot-spots. One of our main conclusions is that the best hot-spot candidates for high energy astroparticle production is the extended ($L_{HS}\\geq 1kpc$), strongly magnetized ($B> 0.1mG$) terminal shock displaying synchrotron emission cut-off lying at least in the optical band. We found only one object (3C273A) over the six objects in our sample being capable to produce cosmic rays up to $10^{20}$ eV. Secondly, we investigate the astroparticle spectra produced by two characteric hot-spots (Cygnus A and 3C273 A) by applying a multi-scale MHD-kinetic scheme, coupling MHD simulations to kinetic computations using stochastic differential equations. We show that 3C273 A, matching the previous properties, may produce protons up to $10^{20}$ eV in a Kolmogorov type turbulence by both computing electron and cosmic ray acceleration. We also calculate the high-energy neutrino and gamma-ray fluxes on Earth produced through p-$\\gamma$ and p-p processes and compare them to the most sensitive astroparticle experiments.
Aeras: A next generation global atmosphere model
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Spotz, William F.; Smith, Thomas M.; Demeshko, Irina P.; Fike, Jeffrey A.
2015-06-01T23:59:59.000Z
Sandia National Laboratories is developing a new global atmosphere model named Aeras that is performance portable and supports the quantification of uncertainties. These next-generation capabilities are enabled by building Aeras on top of Albany, a code base that supports the rapid development of scientific application codes while leveraging Sandia's foundational mathematics and computer science packages in Trilinos and Dakota. Embedded uncertainty quantification (UQ) is an original design capability of Albany, and performance portability is a recent upgrade. Other required features, such as shell-type elements, spectral elements, efficient explicit and semi-implicit time-stepping, transient sensitivity analysis, and concurrent ensembles, were not componentsmore »of Albany as the project began, and have been (or are being) added by the Aeras team. We present early UQ and performance portability results for the shallow water equations.« less
Cambridge, University of
temperatures, as a function of chemical composition and heat treatments. Specification Language: FORTRAN / C The modelling procedure is a purely empirical one, and is based on a neural network program called generate44, which was developed by David MacKay and is part of the bigback5 program. The model is constituted
Thermoacoustic magnetohydrodynamic electrical generator
Wheatley, J.C.; Swift, G.W.; Migliori, A.
1984-11-16T23:59:59.000Z
A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.
Thermoacoustic magnetohydrodynamic electrical generator
Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Los Alamos, NM); Migliori, Albert (Santa Fe, NM)
1986-01-01T23:59:59.000Z
A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1,000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.
Leung, Ka-Ngo
2006-11-21T23:59:59.000Z
A spherical neutron generator is formed with a small spherical target and a spherical shell RF-driven plasma ion source surrounding the target. A deuterium (or deuterium and tritium) ion plasma is produced by RF excitation in the plasma ion source using an RF antenna. The plasma generation region is a spherical shell between an outer chamber and an inner extraction electrode. A spherical neutron generating target is at the center of the chamber and is biased negatively with respect to the extraction electrode which contains many holes. Ions passing through the holes in the extraction electrode are focused onto the target which produces neutrons by D-D or D-T reactions.
Using Backup Generators: Choosing the Right Backup Generator...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Generators: Choosing the Right Backup Generator - Business Owners Identify essential systems and equipment-What do you need to keep your business operating? These may include...
Generalized Parton Distributions for the Proton in AdS/QCD
Chakrabarti, Dipankar
2013-01-01T23:59:59.000Z
We present a study of proton GPDs in both momentum and position spaces using proton wavefunction obtained from AdS/ QCD. Here we consider the soft wall model. The results are compared with a phenomenological model of proton GPDs.
TDROP: A routing protocol for physically hierarchical ad hoc mobile networks
Ahmed, Zaheer
2000-01-01T23:59:59.000Z
Many protocols for routing in mobile ad hoc networks have been proposed. None of these protocols differentiates mobile nodes based on their physical characteristics and also there is only one proposal for connecting ad hoc networks together to form...
Comparison of value-added models for school ranking and classification: a Monte Carlo study
Wang, Zhongmiao
2009-05-15T23:59:59.000Z
A “Value-Added” definition of school effectiveness calls for the evaluation of schools based on the unique contribution of schools to individual student academic growth. The estimates of value-added school effectiveness are usually used for ranking...
TDROP: A routing protocol for physically hierarchical ad hoc mobile networks
Ahmed, Zaheer
2000-01-01T23:59:59.000Z
Many protocols for routing in mobile ad hoc networks have been proposed. None of these protocols differentiates mobile nodes based on their physical characteristics and also there is only one proposal for connecting ad hoc ...
Service Discovery in Mobile Ad Hoc Networks: A Field Theoretic Approach Vincent Lenders
Lenders, Vincent
Service Discovery in Mobile Ad Hoc Networks: A Field Theoretic Approach Vincent Lenders , Martin: {lenders, may, plattner}@tik.ee.ethz.ch Abstract Service discovery in mobile ad hoc networks is challeng
Spatial Interference Mitigation for Multiple Input Multiple Output Ad Hoc Networks: MISO Gains
Paris-Sud XI, Université de
Spatial Interference Mitigation for Multiple Input Multiple Output Ad Hoc Networks: MISO Gains beamforming for a multiple input single output (MISO) ad hoc network to increase the density of successful
Digital ad morphing : using behavioral analysis to increase response rates to online advertisements
Link, Cordelia S
2011-01-01T23:59:59.000Z
This paper details the implementation and testing of a digital ad morphing system, a system which determines user cognitive style based on interaction with a website and serves ads designed to complement that cognitive ...
External split field generator
Thundat, Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)
2012-02-21T23:59:59.000Z
A generator includes a coil disposed about a core. A first stationary magnetic field source may be disposed on a first end portion of the core and a second stationary magnetic field source may be disposed on a second end portion of core. The first and second stationary magnetic field sources apply a stationary magnetic field to the coil. An external magnetic field source may be disposed outside the coil to apply a moving magnetic field to the coil. Electrical energy is generated in response to an interaction between the coil, the moving magnetic field, and the stationary magnetic field.
Fritz, Robert J. (Schenectady, NY)
1986-01-01T23:59:59.000Z
A flowmeter is provided which uses the sidetones generated in a cavity formed in the wall of a flowpipe or the like in response to fluid flowing past the cavity to provide a measure of the flow velocity of that fluid. The dimensions of the cavity are such as to provide a dominant vibratory frequency which is sensed by a pressure sensor. The flowmeter is adapted for use for a range of frequencies in which the Strouhal number is constant and under these conditions the vibratory frequency is directly related to the flow rate. The tone generator cavity and pressure transducer form a unit which is connected in-line in the flowpipe.
Maximizing the ExoEarth candidate yield from a future direct imaging mission
Stark, Christopher C. [NASA Goddard Space Flight Center, Exoplanets and Stellar Astrophysics Laboratory, Code 667, Greenbelt, MD 20771 (United States); Roberge, Aki; Mandell, Avi [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Robinson, Tyler D., E-mail: christopher.c.stark@nasa.gov [NASA Ames Research Center, Moffett Field, CA 94035 (United States)
2014-11-10T23:59:59.000Z
ExoEarth yield is a critical science metric for future exoplanet imaging missions. Here we estimate exoEarth candidate yield using single visit completeness for a variety of mission design and astrophysical parameters. We review the methods used in previous yield calculations and show that the method choice can significantly impact yield estimates as well as how the yield responds to mission parameters. We introduce a method, called Altruistic Yield Optimization, that optimizes the target list and exposure times to maximize mission yield, adapts maximally to changes in mission parameters, and increases exoEarth candidate yield by up to 100% compared to previous methods. We use Altruistic Yield Optimization to estimate exoEarth candidate yield for a large suite of mission and astrophysical parameters using single visit completeness. We find that exoEarth candidate yield is most sensitive to telescope diameter, followed by coronagraph inner working angle, followed by coronagraph contrast, and finally coronagraph contrast noise floor. We find a surprisingly weak dependence of exoEarth candidate yield on exozodi level. Additionally, we provide a quantitative approach to defining a yield goal for future exoEarth-imaging missions.
Matching the Hagedorn temperature in AdS/CFT correspondence
Harmark, Troels; Orselli, Marta [Niels Bohr Institute and Nordita Blegdamsvej 17, 2100 Copenhagen O (Denmark)
2006-12-15T23:59:59.000Z
We match the Hagedorn/deconfinement temperature of planar N=4 super Yang-Mills (SYM) on RxS{sup 3} to the Hagedorn temperature of string theory on AdS{sub 5}xS{sup 5}. The match is done in a near-critical region where both gauge theory and string theory are weakly coupled. The near-critical region is near a point with zero temperature and critical chemical potential. On the gauge-theory side we are taking a decoupling limit found in Ref. 7 in which the physics of planar N=4 SYM is given exactly by the ferromagnetic XXX{sub 1/2} Heisenberg spin chain. We find moreover a general relation between the Hagedorn/deconfinement temperature and the thermodynamics of the Heisenberg spin chain and we use this to compute it in two distinct regimes. On the string-theory side, we identify the dual limit for which the string tension and string coupling go to zero. This limit is taken of string theory on a maximally supersymmetric pp-wave background with a flat direction, obtained from a Penrose limit of AdS{sub 5}xS{sup 5}. We compute the Hagedorn temperature of the string theory and find agreement with the Hagedorn/deconfinement temperature computed on the gauge-theory side.
Use of the LEDA Facility as an ADS High-Power Accelerator Test Bed
Garnett, R. W. (Robert W.); Sheffield, R. L. (Richard L.)
2003-01-01T23:59:59.000Z
The Low-Energy Demonstration Accelerator (LEDA) was built to generate high-current proton beams. Its successful full-power operation and testing in 1999-2001 confirmed the feasibility of a high-power linear accelerator (linac) front end, the most technically challenging portion of such a machine. The 6.7-MeV accelerator operates reliably at 95-mA CW beam current with few interruptions orjaults, and qualiJes as one of the most powerful accelerators in the world. LEDA is now available to address the needs of other programs. LEDA can be upgraded in a staged fashion to allow for full-power accelerator demonstrations. The proposed post-h!FQ accelerator structures are 350-MHz superconducting spoke cavities developed for the AAA /APT program. The superconducting portion of the accelerator is designed for a IOO-mA proton beam current. Superconducting cavities were chosen because of the signijkant thermal issues with room-temperature structures, the larger superconducting cavity apertures, and the lower operating costs ('because of improved electrical efficiency) of a superconducting accelerator. Since high reliability is a major issue for an ADS system, the superconducting design architecture alIows operation through faults due to the failure of single magnets or superconducting cavities. The presently installed power capacity of 13 MVA of input ACpower is capable of supporting a 40-MeVproton beam at 100 mA. (The input power is easily expandable to 25 MVA, allowing up to 100-MeV operation). Operation at 40-MeV would provide a complete demonstration of all of the critical accelerator sub-systems ofa full-power ADS system.
EXPERIMENT 6101 STANDARD NAVY YIELD TEST DATE 06/06/06 ENTRY NAMES NO. YIELD CWT 100 SEED DAYS.9 50.0 4.1 #12;EXPERIMENT 6101 STANDARD NAVY YIELD TEST DATE 06/06/06 ENTRY NAMES NO. YIELD CWT 100*6/CN49-242 NAVY GENTEC, VISTA 3 25.8 17.9 42.7 88.8 2.0 50.0 3.9 N05305 N00838/B98304//N00792 44 25
Hunt, A.J.
1982-09-29T23:59:59.000Z
A method and apparatus whereby small carbon particles are made by pyrolysis of a mixture of acetylene carried in argon. The mixture is injected through a nozzle into a heated tube. A small amount of air is added to the mixture. In order to prevent carbon build-up at the nozzle, the nozzle tip is externally cooled. The tube is also elongated sufficiently to assure efficient pyrolysis at the desired flow rates. A key feature of the method is that the acetylene and argon, for example, are premixed in a dilute ratio, and such mixture is injected while cool to minimize the agglomeration of the particles, which produces carbon particles with desired optical properties for use as a solar radiant heat absorber.
The Generation Effect and Memory
Rosner, Zachary Alexander
2012-01-01T23:59:59.000Z
M. A. (2007). The generation effect: A meta- analyticBjork, R. A. (1988). The generation effect: Support for aE. J. (2012). The next generation: The value of reminding.
Options for Generating Steam Efficiently
Ganapathy, V.
This paper describes how plant engineers can efficiently generate steam when there are steam generators and Heat Recovery Steam Generators in their plant. The process consists of understanding the performance characteristics of the various equipment...
Code Generation on Steroids: Enhancing COTS Code Generators via Generative Aspects
Ryder, Barbara G.
Code Generation on Steroids: Enhancing COTS Code Generators via Generative Aspects Cody Henthorne tilevich@cs.vt.edu Abstract Commercial of-the-shelf (COTS) code generators have become an integral part of modern commercial software development. Programmers use code generators to facilitate many tedious
Yield, grade, and leafspot reaction of interspecific derived peanut lines
Ouedraogo, Mahama
1990-01-01T23:59:59.000Z
4. 1 b-d 0. 4 c 10. 8 ab 1. 5 c 16. 7 a 6. 6 i 22. 1 f-h 25. 5 e-h 19. 5 g-i 32. 3 d-9 49. 5 de 24, 3 i-k 21. 6 jk 26. 4 h-k 30. 0 g-k 21 22 23 24 25 26 27 28 29 Florunner So. Runner LSD 0, 3 0. 3 0. 3 0. 1 0. 1 0. 2 0... ab 1. 3 de 1. 4 fg 6. 1 e-1 17. 3 i-m 3. 2 d-g 10. 1 c-g 19. 5 g-m 4. 9 c-f 11. 8 b-f 22. 3 g-1 13. 5 a 11. 3 b-f 44. 2 ab 3. 7 d-g 14. 1 a-d 18. 6 h-m 0. 2 g 0. 7 i 4. 5 o 1. 1 fg 2. 2 hi 11. 2 m-o 2. 3 e-g 6. 0 e-i 16. 0 1-n 5. 9 b-e 8. 2 c...
ZeaChem Pilot Project: High-Yield Hybrid Cellulosic Ethanol Process...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
ZeaChem Pilot Project: High-Yield Hybrid Cellulosic Ethanol Process Using High-Impact Feedstock for Commercialization ZeaChem Pilot Project: High-Yield Hybrid Cellulosic Ethanol...
Combining Low-Temperature Combustion with Lean-NOx Trap Yields...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Low-Temperature Combustion with Lean-NOx Trap Yields Progress Toward Targets of Efficient NOx Control for Diesels Combining Low-Temperature Combustion with Lean-NOx Trap Yields...
The role of yield grade and fat deposition on the cutability of lamb carcasses
Fritz, Kristina Danielle
1996-01-01T23:59:59.000Z
assigned randomly to one of five yield grade treatment groups (n=18), devised to simulate the fat thickness ranges designated by the USDA yield grade equation. The lambs were evaluated periodically and visually appraised by a team of three experienced...
Enhancing the Security of On-demand Routing in Ad Hoc Networks
California at Santa Cruz, University of
Enhancing the Security of On-demand Routing in Ad Hoc Networks Zhenjiang Li1 and J.J. Garcia, to be truly effective, communication over such networks should be secure. The attacks to an ad hoc network can Springer-Verlag Berlin Heidelberg 2005 #12;Enhancing the Security of On-demand Routing in Ad Hoc Networks
Influences of Government Interventions on Increasing Value-Added Wood Product Exports from Ghana
Influences of Government Interventions on Increasing Value-Added Wood Product Exports from Ghana exporting raw materials such lumber to exporting processed or value-added wood products. In the mid-1990s on increasing value-added exports. These actions are: 1) the imposition of a levy on air-dried lumber exports, 2
Wireless ad hoc networks Acknowledgement: Slides borrowed from Richard Y. Yang @ Yale
Gao, Jie
are not flexible. Vulnerable to attacks. · Ad hoc networks· Ad hoc networks Flexible, easy to deploy, cheaper · Optimal power assignment /transmission range · Optimal scheduling & multi-hop routing · Node are staticWireless ad hoc networks Acknowledgement: Slides borrowed from Richard Y. Yang @ Yale #12
A Multiobjective Performance Evaluation Framework for Routing in Wireless Ad Hoc
Jaffrès-Runser, Katia
network when delay, robustness and energy are considered. I. INTRODUCTION Wireless ad hoc and sensor to transmission delay [8], energy consumption [9] or fairness [10] are added on top of its main design goalA Multiobjective Performance Evaluation Framework for Routing in Wireless Ad Hoc Networks Katia
Asplund et al. Wireless Ad Hoc Dissemination for Search and Rescue Proceedings of the 7th
Asplund et al. Wireless Ad Hoc Dissemination for Search and Rescue Proceedings of the 7th International ISCRAM Conference Seattle, USA, May 2010 1 Wireless Ad Hoc Dissemination for Search and Rescue communication and Internet connectivity. Even if we consider wireless ad hoc communication as a means
Reliable and Energy-Efficient Routing for Static Wireless Ad Hoc Networks with Unreliable Links
Wang, Yu
Reliable and Energy-Efficient Routing for Static Wireless Ad Hoc Networks with Unreliable Links. In this paper, we address the problem of energy efficient reliable routing for wireless ad hoc networks communication, energy efficiency. Ç 1 INTRODUCTION WIRELESS ad hoc networks draw lots of attentions in recent
Clique-Based Randomized Multiple Access for Energy-Efficient Wireless Ad Hoc Networks
Clique-Based Randomized Multiple Access for Energy-Efficient Wireless Ad Hoc Networks Paul G. INTRODUCTION WIRELESS sensor networks, as well as other ad-hoc sys- tems that network energy-limited nodes are often traded for energy efficiency in the latter. MAC (media access control) protocols for wireless ad
Low-complexity energy-efficient broadcasting in wireless ad-hoc networks using network coding
Chen, Yuanzhu Peter
Low-complexity energy-efficient broadcasting in wireless ad-hoc networks using network coding J energy broadcasting in ad-hoc wireless networks is NP-complete [3] and a large number of approximation of minimizing the energy per bit when multicasting in an ad-hoc wireless network. An alternative formulation
FaultTolerant Distributed Algorithms in Sparse Ad Hoc Wireless Networks
FaultTolerant Distributed Algorithms in Sparse Ad Hoc Wireless Networks (SPAWN) BETTINA WEISS communication technologies, wireless ad hoc networks are increasingly commonplace nowadays. Spontaneous (``ad wireless sensor networks and disaster area communication systems. It is also a major enabling technology
Nuclear Power Generating Facilities (Maine)
Broader source: Energy.gov [DOE]
The first subchapter of the statute concerning Nuclear Power Generating Facilities provides for direct citizen participation in the decision to construct any nuclear power generating facility in...
Volcanoes generate devastating waves
Lockridge, P. (National Geophysical Data Center, Boulder, CO (USA))
1988-01-01T23:59:59.000Z
Although volcanic eruptions can cause many frightening phenomena, it is often the power of the sea that causes many volcano-related deaths. This destruction comes from tsunamis (huge volcano-generated waves). Roughly one-fourth of the deaths occurring during volcanic eruptions have been the result of tsunamis. Moreover, a tsunami can transmit the volcano's energy to areas well outside the reach of the eruption itself. Some historic records are reviewed. Refined historical data are increasingly useful in predicting future events. The U.S. National Geophysical Data Center/World Data Center A for Solid Earth Geophysics has developed data bases to further tsunami research. These sets of data include marigrams (tide gage records), a wave-damage slide set, digital source data, descriptive material, and a tsunami wall map. A digital file contains information on methods of tsunami generation, location, and magnitude of generating earthquakes, tsunami size, event validity, and references. The data can be used to describe areas mot likely to generate tsunamis and the locations along shores that experience amplified effects from tsunamis.
Fourth generation bound states
Ishiwata, Koji; Wise, Mark B. [California Institute of Technology, Pasadena, California, 91125 (United States)
2011-04-01T23:59:59.000Z
We investigate the spectrum and wave functions of q{sup '}q{sup '} bound states for heavy fourth generation quarks (q{sup '}) that have a very small mixing with the three observed generations of standard model quarks. Such bound states come with different color, spin and flavor quantum numbers. Since the fourth generation Yukawa coupling, {lambda}{sub q}{sup '}, is large we include all perturbative corrections to the potential between the heavy quark and antiquark of order {lambda}{sub q}{sup '2}N{sub c}/16{pi}{sup 2} where N{sub c} is the number of colors, as well as relativistic corrections suppressed by (v/c){sup 2}. We find that the lightest fourth generation quark masses for which a bound state exists for color octet states. For the color singlet states, which always have a bound state, we analyze the influence that the Higgs couplings have on the size and binding energy of the bound states.
Treves, S.; Cheng, C.C.
1988-03-08T23:59:59.000Z
Potassium osmate, of the formula K[sub 2]OsO[sub 2](OH)[sub 4], is used to make a column for the generation of Ir-191 m, which is used in first pass angiography to detect cardiac defects in patients. 2 figs.
B. V. Vasiliev
2001-10-29T23:59:59.000Z
It is a current opinion that thermonuclear fusion is the main source of the star activity. It is shown below that this source is not unique. There is another electrostatic mechanism of the energy generation which accompanies thermonuclear fusion. Probably, this approach can solve the solar neutrino problem.
GENERATIVE AND DISCRIMINATIVE CLASSIFIERS
Baltes, Jacky
CHAPTER 1 GENERATIVE AND DISCRIMINATIVE CLASSIFIERS: NAIVE BAYES AND LOGISTIC REGRESSION Machine, or equivalently P(Y|X). To begin, we will assume Y is a boolean-valued random variable, and X is a vector) where ym represents the mth possible value for Y, and where the summation in the denominator is over all
GENERATIVE AND DISCRIMINATIVE CLASSIFIERS
Mitchell, Tom
CHAPTER 3 GENERATIVE AND DISCRIMINATIVE CLASSIFIERS: NAIVE BAYES AND LOGISTIC REGRESSION Machine, or equivalently P(Y|X). To begin, we will assume Y is a boolean-valued random variable, and X is a vector. Mitchell. 2 where ym denotes the mth possible value for Y, xk denotes the kth possible vector value for X
Generating Resources Advisory Committee
Generating Resources Advisory Committee May 28, 2014 Steve Simmons Gillian Charles #12;2 9:30 AM plants 10:45 AM Break 11:00 AM Peaking Technologies Continued... 11:30 AM Combined Cycle Combustion Turbine and Utility Scale Solar PV Reference plant updates Levelized cost of energy 12:00 PM Lunch
Generating Resources Advisory Committee
Generating Resources Advisory Committee February 27, 2014 Steven Simmons and Gillian Charles Upcoming Symposium 9:15 am Natural Gas Peaking Technologies Technology Trends Proposed reference plant Costing, Economies of Scale, Normalizations Reference Plants 12:30 pm Discussion of Next GRAC Meetings
The Effects of Nitrogen Fertilization on Bioenergy Sorghum Yield and Quality
Zilahi-Sebess, Szilvia
2012-07-16T23:59:59.000Z
................................................................................................... 77 Economics of fertilizing biomass feedstocks ................................................. 77 Biomass feedstock yield response to applied nitrogen: An example ........... 79 CONCLUSIONS...
q-Deformation of the AdS5 x S5 Superstring S-matrix and its Relativistic Limit
Hoare, Ben; Miramontes, J Luis
2011-01-01T23:59:59.000Z
A set of four factorizable non-relativistic S-matrices for a multiplet of fundamental particles are defined based on the R-matrix of the quantum group deformation of the centrally extended superalgebra su(2|2). The S-matrices are a function of two independent couplings g and q=exp(i\\pi/k). The main result is to find the scalar factor, or dressing phase, which ensures that the unitarity and crossing equations are satisfied. For generic (g,k), the S-matrices are branched functions on a product of rapidity tori. In the limit k->infinity, one of them is identified with the S-matrix describing the magnon excitations on the string world sheet in AdS5 x S5, while another is the mirror S-matrix that is needed for the TBA. In the g->infinity limit, the rapidity torus degenerates, the branch points disappear and the S-matrices become meromorphic functions, as required by relativistic S-matrix theory. However, it is only the mirror S-matrix which satisfies the correct relativistic crossing equation. The mirror S-matrix ...
GENERATION AND RANDOM GENERATION: FROM SIMPLE GROUPS TO MAXIMAL SUBGROUPS
Burness, Tim
GENERATION AND RANDOM GENERATION: FROM SIMPLE GROUPS TO MAXIMAL SUBGROUPS TIMOTHY C. BURNESS of generators for G. It is well known that d(G) = 2 for all (non-abelian) finite simple groups. We prove that d investigate the random generation of maximal subgroups of simple and almost simple groups. By applying
Paris-Sud XI, Université de
Yield Enhancement of Digital Microfluidics-Based Biochips Using Space Redundancy and Local to avoid faulty elements. Digital microfluidics- based biochips are also amenable to redundancy-based yield. As microfluidics-based biochips become more complex, manufacturing yield will have significant influence
STORAGE-YIELD CURVES WITH INFLOWS FROM A DIVERSION PIERLUIGI CLAPS
Poggi, Davide
1 STORAGE-YIELD CURVES WITH INFLOWS FROM A DIVERSION CHANNEL PIERLUIGI CLAPS DIFA, Università della Probabilistic analytical methods for building storage-yield curves provide reliable preliminary design condition of storage-yield curves of reservoirs when additional inflows from a diversion channel are available
, AND MAXIMUM ECONOMIC YIELD IN THE SHRIMP FISHERY OF THE GULF OF MEXICO BY JAMES NANCE, WALTER KEITHLY, JR YIELD, AND MAXIMUM ECONOMIC YIELD IN THE SHRIMP FISHERY OF THE GULF OF MEXICO BY JAMES NANCE, WALTER in the shrimp fishery of the Gulf of Mexico. NOAA Technical Memorandum NMFS-SEFSC-570, 71P. Copies may
Robertson, Andrew W.
, solar1 radiation and precipitation to crop yield in the North China Plain, 196120032 Chao Chen in temperature, solar11 radiation and precipitation to crop yield in the North China Plain, 1961200312 13 14 Short Title:15 Contributions, Temperature, Solar radiation, Precipitation, Crop yield16 Page 1 of 41