Sample records for vortices print soft

  1. 3D Simulation of Prints for Improved Soft Rohit A. Patil, Mark D. Fairchild, Garrett M. Johnson

    E-Print Network [OSTI]

    Johnson, Garrett M.

    3D Simulation of Prints for Improved Soft Proofing Rohit A. Patil, Mark D. Fairchild, Garrett M in the quest towards achieving improved soft proofing capabilities. It was desired through this 3D simulation out to evaluate the usefulness of this 3D simulation over current 2D soft proofing technique. 1

  2. astronomical soft gamma-ray: Topics by E-print Network

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

    astronomical soft gamma-ray First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Diffuse Galactic Soft...

  3. Nonlinearity 12 (1999) 851865. Printed in the UK PII: S0951-7715(99)96371-5 Conservation laws in a first-order dynamical system of vortices

    E-Print Network [OSTI]

    Malfait, Nicole

    1999-01-01T23:59:59.000Z

    . TheconservationlawsforlinearandangularmomentainaSchr¨odinger­Chern­Simons field theory modelling vortex dynamics in planar superconductors flux vortices in thin-film superconductors [9]. The Lagrangian is of first-order Schr in superconductors at very low temperature [1, 14]. For time-independent fields, the Lagrangian reduces

  4. Design and prototype : a manufacturing system for the soft lithography technique

    E-Print Network [OSTI]

    Cao, Arthur Y. (Arthur Yao)

    2006-01-01T23:59:59.000Z

    Ever since 1998 when the term "soft lithography" was first created, soft lithography techniques have drawn close attention of the academia and the industry. Micro contact printing is by far the most widely used soft ...

  5. Electron vortices in semiconductors devicesa... Kamran Mohsenib

    E-Print Network [OSTI]

    Electron vortices in semiconductors devicesa... Kamran Mohsenib Aerospace Engineering Sciencies; published online 3 October 2005 The hydrodynamic model of electron transport in semiconductors is analyzed vorticity effects. Furthermore, conditions for observation of electron vortices in semiconductor devices

  6. Global vorticity shedding for a vanishing foil

    E-Print Network [OSTI]

    Steele, Stephanie Chin

    2012-01-01T23:59:59.000Z

    We explore several aspects of the phenomenon we call global vorticity shedding. Global vorticity shedding occurs when an object in viscous fluid suddenly vanishes, shedding the entire boundary layer vorticity into the wake ...

  7. Influence of Domain Wall Pinning on the Dynamic Behavior of Magnetic...

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

    Influence of Domain Wall Pinning on the Dynamic Behavior of Magnetic Vortices Print Soft magnetic, micron-sized thin-film structures with magnetic vortices are intriguing systems...

  8. Lensless Imaging of Whole Biological Cells with Soft X-Rays

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

    Cells with Soft X-Rays Lensless Imaging of Whole Biological Cells with Soft X-Rays Print Wednesday, 26 May 2010 00:00 A team of scientists has used x-ray diffraction...

  9. Graphene with geometrically induced vorticity

    E-Print Network [OSTI]

    Jiannis K. Pachos; Michael Stone; Kristan Temme

    2008-03-26T23:59:59.000Z

    At half filling, the electronic structure of graphene can be modelled by a pair of free two-dimensional Dirac fermions. We explicitly demonstrate that in the presence of a geometrically induced gauge field, an everywhere-real Kekule modulation of the hopping matrix elements can correspond to a non-real Higgs field with non-trivial vorticity. This provides a natural setting for fractionally charged vortices with localized zero modes. For fullerene-like molecules we employ the index theorem to demonstrate the existence of six low-lying states that do not depend strongly on the Kekule-induced mass gap.

  10. Characterization of reconnecting vortices in superfluid helium

    E-Print Network [OSTI]

    Texas at Austin. University of

    Characterization of reconnecting vortices in superfluid helium Gregory P. Bewley*, Matthew S experimental observations of reconnection between quantized vortices in superfluid helium. We do so by imaging. reconnection Vorticity in superfluid helium is confined to filaments that are only angstroms in diameter

  11. Combustor with multistage internal vortices

    DOE Patents [OSTI]

    Shang, Jer Yu; Harrington, R.E.

    1987-05-01T23:59:59.000Z

    A fluidized bed combustor is provided with a multistage arrangement of vortex generators in the freeboard area. The vortex generators are provided by nozzle means which extend into the interior of the freeboard for forming vortices within the freeboard areas to enhance the combustion of particulate material entrained in product gases ascending into the freeboard from the fluidized bed. Each of the nozzles are radially inwardly spaced from the combustor walls defining the freeboard to provide for the formation of an essentially vortex-free, vertically extending annulus about the vortices whereby the particulate material centrifuged from the vortices against the inner walls of the combustor is returned through the annulus to the fluidized bed. By adjusting the vortex pattern within the freeboard, a significant portion of the full cross-sectional area of the freeboard except for the peripheral annulus can be contacted with the turbulent vortical flow for removing the particulate material from the gaseous products and also for enhancing the combustion thereof within the freeboard. 2 figs.

  12. Linear water waves with vorticity: rotational features and particle paths

    E-Print Network [OSTI]

    Mats Ehrnstrom; Gabriele Villari

    2007-12-04T23:59:59.000Z

    Steady linear gravity waves of small amplitude travelling on a current of constant vorticity are found. For negative vorticity we show the appearance of internal waves and vortices, wherein the particle trajectories are not any more closed ellipses. For positive vorticity the situation resembles that of Stokes waves, but for large vorticity the trajectories are affected.

  13. Precision control of cylindrical stamp contact in a continuous roll-to-roll microcontact printing machine

    E-Print Network [OSTI]

    Libert, Adam M. (Adam Marcus)

    2014-01-01T23:59:59.000Z

    Microcontact printing is a form of soft lithography that uses a molded elastomeric stamp to print patterns with micron and sub-micron scale features. This is an effective low-cost technique for replicating master patterns ...

  14. Bielectron vortices in gated graphene

    E-Print Network [OSTI]

    C. A. Downing; M. E. Portnoi

    2015-06-14T23:59:59.000Z

    We study the formation of bound two-particle states in gapless monolayer graphene in gated structures. We find that, even in the regime of massless Dirac fermions, coupling can occur at zero-energy for different or same charge quasiparticles. These bipartite states must have a non-zero internal angular momentum, meaning that they only exist as stationary vortices. We propose a new picture of the experimentally seen Fermi velocity renormalization as a manifestation of these pairs, suggest the possibility of a condensate of these novel quasiparticles.

  15. Modulated optical vortices Jennifer E. Curtis 1

    E-Print Network [OSTI]

    Grier, David

    Modulated optical vortices Jennifer E. Curtis 1 and David G. Grier Dept. of Physics, James Franck-beam optical gradient force traps created by focusing helical modes of light are known as optical vortices. Modulating the helical pitch of such a modes' wavefront yields a new class of optical traps whose dynamically

  16. Vortices in superconductors: modelling and computer simulations

    E-Print Network [OSTI]

    Du, Qiang

    Vortices in superconductors: modelling and computer simulations B y Jennifer Deang1 , Qiang D u2 Vortices in superconductors are tubes of magnetic flux, or equivalently, cylindrical current loops is of importance both to the understanding of the basic physics of superconductors and to the design of devices. We

  17. Free Energy of thick Center Vortices

    E-Print Network [OSTI]

    Ch. Korn; H. Reinhardt; T. Tok

    2005-08-05T23:59:59.000Z

    The free energy of thick center vortices is calculated in continuum Yang-Mills theory in one-loop approximation using the proper time regularization. The vortices are represented by Abelian gauge field configurations on the torus which satisfy twisted boundary conditions.

  18. Traveling water waves with point vortices

    E-Print Network [OSTI]

    Kristoffer Varholm

    2015-03-20T23:59:59.000Z

    We construct small-amplitude solitary traveling gravity-capillary water waves with a finite number of point vortices along a vertical line, on finite depth. This is done using a local bifurcation argument. The properties of the resulting waves are also examined: We find that they depend significantly on the position of the point vortices in the water column.

  19. Why does gravitational radiation produce vorticity?

    E-Print Network [OSTI]

    L. Herrera; W. Barreto; J. Carot; A. Di Prisco

    2007-03-26T23:59:59.000Z

    We calculate the vorticity of world--lines of observers at rest in a Bondi--Sachs frame, produced by gravitational radiation, in a general Sachs metric. We claim that such an effect is related to the super--Poynting vector, in a similar way as the existence of the electromagnetic Poynting vector is related to the vorticity in stationary electrovacum spacetimes.

  20. Contact region fidelity, sensitivity, and control in roll-based soft lithography

    E-Print Network [OSTI]

    Petrzelka, Joseph E

    2012-01-01T23:59:59.000Z

    Soft lithography is a printing process that uses small features on an elastomeric stamp to transfer micron and sub-micron patterns to a substrate. Translating this lab scale process to a roll-based manufacturing platform ...

  1. Lensless Imaging of Whole Biological Cells with Soft X-Rays

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

    Lensless Imaging of Whole Biological Cells with Soft X-Rays Print A team of scientists has used x-ray diffraction microscopy at ALS Beamline 9.0.1 to make images of whole yeast...

  2. Unzipping Vortices in Type-II Superconductors

    E-Print Network [OSTI]

    Yariv Kafri; David R. Nelson; Anatoli Polkovnikov

    2007-06-18T23:59:59.000Z

    The unzipping of vortex lines using magnetic-force microscopy from extended defects is studied theoretically. We study both the unzipping isolated vortex from common defects, such as columnar pins and twin-planes, and the unzipping of a vortex from a plane in the presence of other vortices. We show, using analytic and numerical methods, that the universal properties of the unzipping transition of a single vortex depend only on the dimensionality of the defect in the presence and absence of disorder. For the unzipping of a vortex from a plane populated with many vortices is shown to be very sensitive to the properties of the vortices in the two-dimensional plane. In particular such unzipping experiments can be used to measure the ``Luttinger liquid parameter'' of the vortices in the plane. In addition we suggest a method for measuring the line tension of the vortex directly using the experiments.

  3. Spontaneous vortices in ferromagnet-superconductor systems

    E-Print Network [OSTI]

    Wei, Hongduo

    2006-08-16T23:59:59.000Z

    We study the interaction between superconductors and ferromagnets in two systems: a ferromagnet-superconductor bilayer, and a thin superconducting film with a periodic array of magnetic dots upon it, with spontaneous vortices appearing...

  4. Center vortices as composites of monopole fluxes

    E-Print Network [OSTI]

    Deldar, Sedigheh

    2015-01-01T23:59:59.000Z

    We study the relation between the flux of a center vortex obtained from the center vortex model and the flux formed between monopoles obtained from the Abelian gauge fixing method. Motivated by the Monte Carlo simulations which have shown that almost all monopoles are sitting on the top of vortices, we construct the fluxes of center vortices for $SU(2)$ and $SU(3)$ gauge groups using fractional fluxes of monopoles. Then, we compute the potentials in the fundamental representation induced by center vortices and fractional fluxes of monopoles. We show that by combining the fractional fluxes of monopoles one can produce the center vortex fluxes for $SU(3)$ gauge group in a "center vortex model". Comparing the potentials, we conclude that the fractional fluxes of monopoles attract each other.

  5. Vorticity survival in magnetised Friedmann universes

    E-Print Network [OSTI]

    Fani Dosopoulou; Christos G. Tsagas

    2014-05-07T23:59:59.000Z

    We use a general relativistic approach to investigate the effects of weak cosmological magnetic fields on linear rotational perturbations during the radiation and dust epochs of the universe. This includes ordinary kinematic vorticity, as well as vortex-like inhomogeneities in the density distribution of the cosmic medium. Our study confirms that magnetic fields can source both types of perturbations and shows that their presence also helps cosmic rotation to survive longer. In agreement with previous Newtonian studies, we find that during the dust era vorticity decays slower than in non-magnetised cosmologies. Prior to equipartition the magnetic effect is more pronounced, since it helps the aforementioned rotational distortions to maintain constant magnitude. Overall, magnetised universes seem to provide a much better environment for the survival of cosmic vorticity than their magnetic-free counterparts.

  6. Linear phase distribution of acoustical vortices

    SciTech Connect (OSTI)

    Gao, Lu; Zheng, Haixiang [Key Laboratory of Optoelectronics of Jiangsu Province, School of Physics Science and Technology, Nanjing Normal University, 1 Wenyuan Road, Xianlin District, Nanjing 210023 (China); Ma, Qingyu, E-mail: maqingyu@njnu.edu.cn [Key Laboratory of Optoelectronics of Jiangsu Province, School of Physics Science and Technology, Nanjing Normal University, 1 Wenyuan Road, Xianlin District, Nanjing 210023 (China); Laboratory of Modern Acoustics of MOE, Nanjing University, Nanjing 210093 (China); Tu, Juan; Zhang, Dong [Laboratory of Modern Acoustics of MOE, Nanjing University, Nanjing 210093 (China)

    2014-07-14T23:59:59.000Z

    Linear phase distribution of phase-coded acoustical vortices was theoretically investigated based on the radiation theory of point source, and then confirmed by experimental measurements. With the proposed criterion of positive phase slope, the possibility of constructing linear circular phase distributions is demonstrated to be determined by source parameters. Improved phase linearity can be achieved at larger source number, lower frequency, smaller vortex radius, and/or longer axial distance. Good agreements are observed between numerical simulations and measurement results for circular phase distributions. The favorable results confirm the feasibility of precise phase control for acoustical vortices and suggest potential applications in particle manipulation.

  7. Stable stationary vortices and traveling oscillatory vortices in a stenotic fluid-flow channel David W. Pravica,1

    E-Print Network [OSTI]

    Bier, Martin

    will show that a sufficiently large boundary vor- ticity layer is required for stationary vortices and that a suf- ficiently high Reynolds number with a boundary shear stress is required for traveling oscillatoryStable stationary vortices and traveling oscillatory vortices in a stenotic fluid-flow channel

  8. Threedimensional stability of Burgers vortices Thierry Gallay

    E-Print Network [OSTI]

    Gallay, Thierry

    Three­dimensional stability of Burgers vortices Thierry Gallay Institut Fourier Universitâ??e de Grenoble I BP 74 38402 Saint­Martin­d'Hâ??eres, France Thierry.Gallay@ujf­grenoble.fr Yasunori Maekawa and then in the general case by Gallay and Wayne [9], see also [2, 12, 13]. Moreover, a lot is known about the spectrum

  9. An eddy closure for potential vorticity

    SciTech Connect (OSTI)

    Ringler, Todd D [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The Gent-McWilliams (GM) parameterization is extended to include a direct influence in the momentum equation. The extension is carried out in two stages; an analysis of the inviscid system is followed by an analysis of the viscous system. In the inviscid analysis the momentum equation is modified such that potential vorticity is conserved along particle trajectories following a transport velocity that includes the Bolus velocity in a manner exactly analogous to the continuity and tracer equations. In addition (and in contrast to traditional GM closures), the new formulation of the inviscid momentum equation results in a conservative exchange between potential and kinetic forms of energy. The inviscid form of the eddy closure conserves total energy to within an error proportional to the time derivative of the Bolus velocity. The hypothesis that the viscous term in the momentum equation should give rise to potential vorticity being diffused along isopycnals in a manner analogous to other tracers is examined in detail. While the form of the momentum closure that follows from a strict adherence to this hypothesis is not immediately interpretable within the constructs of traditional momentum closures, three approximations to this hypothesis results in a form of dissipation that is consistent with traditional Laplacian diffusion. The first two approximations are that relative vorticity, not potential vorticity, is diffused along isopyncals and that the flow is in approximate geostrophic balance. An additional approximation to the Jacobian term is required when the dissipation coefficient varies in space. More importantly, the critique of this hypothesis results in the conclusion that the viscosity parameter in the momentum equation should be identical to the tradition GM closure parameter {Kappa}. Overall, we deem the viscous form of the eddy closure for potential vorticity as a viable closure for use in ocean circulation models.

  10. Frequency dependence of the Chiral Vortical Effect

    E-Print Network [OSTI]

    Karl Landsteiner; Eugenio Megias; Francisco Peña Benítez

    2014-09-18T23:59:59.000Z

    We study the frequency dependence of all the chiral vortical and magnetic conductivities for a relativistic gas of free chiral fermions and for a strongly coupled conformal field theory with holographic dual in four dimensions. Both systems have gauge and gravitational anomalies, and we compute their contribution to the conductivities. The chiral vortical conductivities and the chiral magnetic conductivity in the energy current show a frequency dependence in the form of a delta centered at zero frequency. This highly discontinuous behavior is a natural consequence of the Ward identities that include the energy momentum tensor. We discuss the physical interpretation of this result and its possible implications for the quark gluon plasma as created in heavy ion collisions. In the Appendix we discuss why the chiral magnetic effect seems to vanish in the consistent current for a particular implementation of the axial chemical potential.

  11. Emergent vortices in populations of colloidal rollers

    E-Print Network [OSTI]

    Antoine Bricard; Jean-Baptiste-Caussin; Debasish Das; Charles Savoie; Vijayakumar Chikkadi; Kyohei Shitara; Oleksandr Chepizhko; Fernando Peruani; David Saintillan; Denis Bartolo

    2015-06-26T23:59:59.000Z

    Coherent vortical motion has been reported in a wide variety of populations including living organisms (bacteria, fishes, human crowds) and synthetic active matter (shaken grains, mixtures of biopolymers), yet a unified description of the formation and structure of this pattern remains lacking. Here we report the self-organization of motile colloids into a macroscopic steadily rotating vortex. Combining physical experiments and numerical simulations, we elucidate this collective behavior. We demonstrate that the emergent-vortex structure lives on the verge of a phase separation, and single out the very constituents responsible for this state of polar active matter. Building on this observation, we establish a continuum theory and lay out a strong foundation for the description of vortical collective motion in a broad class of motile populations constrained by geometrical boundaries.

  12. Chiral Self-Gravitating Cosmic Vortices

    SciTech Connect (OSTI)

    Rybakov, Yu.P. [Department of Theoretical Physics, Russian University of Peoples' Friendship, ul. Miklukho-Maklaya 6, Moscow, 117198 (Russian Federation)

    2005-06-01T23:59:59.000Z

    In the framework of general relativity, an exact axisymmetric (vortex) solution of the equations of motion is obtained for the SU(2) symmetric sigma model. This solution is characterized by the topological charge (winding number) and angular deficit. In the linearized approximation, the Lyapunov stability of vortices is proved and the deflection angle of a light ray in the gravitational field of the vortex (gravitational lens effect) is calculated.

  13. Soft-Input Soft-Output Sphere Decoding Christoph Studer

    E-Print Network [OSTI]

    Soft-Input Soft-Output Sphere Decoding Christoph Studer Integrated Systems Laboratory ETH Zurich Soft-input soft-output (SISO) detection in multiple-input multiple-output (MIMO) systems constitutes Laboratory ETH Zurich, 8092 Zurich, Switzerland Email: boelcskei@nari.ee.ethz.ch Abstract--Soft-input soft

  14. Theory of static and dynamic antiferromagnetic vortices in LSCO superconductors

    E-Print Network [OSTI]

    Hu, Jiangping

    Theory of static and dynamic antiferromagnetic vortices in LSCO superconductors Jiang-Ping Hu, Shou scattering experiment on LSCO superconductors revealed enhanced antiferromagnetic order in the vortex state and dynamic antiferromanetic vortices in LSCO superconductors. It is shown that the antiferromagnetic region

  15. Abrikosov Gluon Vortices in Color Superconductors

    E-Print Network [OSTI]

    Efrain J. Ferrer

    2010-04-05T23:59:59.000Z

    In this talk I will discuss how the in-medium magnetic field can influence the gluon dynamics in a three-flavor color superconductor. It will be shown how at field strengths comparable to the charged gluon Meissner mass a new phase can be realized, giving rise to Abrikosov's vortices of charged gluons. In that phase, the inhomogeneous gluon condensate anti-screens the magnetic field due to the anomalous magnetic moment of these spin-1 particles. This paramagnetic effect can be of interest for astrophysics, since due to the gluon vortex antiscreening mechanism, compact stars with color superconducting cores could have larger magnetic fields than neutron stars made up entirely of nuclear matter. I will also discuss a second gluon condensation phenomenon connected to the Meissner instability attained at moderate densities by two-flavor color superconductors. In this situation, an inhomogeneous condensate of charged gluons emerges to remove the chromomagnetic instability created by the pairing mismatch, and as a consequence, the charged gluonic currents induce a magnetic field. Finally, I will point out a possible relation between glitches in neutron stars and the existence of the gluon vortices.

  16. Chaotic Transport in Planar Periodic Vortical Flows

    E-Print Network [OSTI]

    Taehoon Ahn; Seunghwan Kim

    1993-09-24T23:59:59.000Z

    We have studied a chaotic transport in a two-dimensional periodic vortical flow under a time-dependent perturbation with period T where the global diffusion occurs along the stochastic web. By using the Melnikov method we construct the separatrix map describing the approximate dynamics near the saddle separatrices. Focusing on the small T, the width of the stochastic layer is calculated analytically by using the residue criterion and the diffusion constant by using the random phase assumption and correlated random walks. The analytical results are in good agreements with the results of two different types of numerical simulations by integrations of the Hamilton's equation of motion and by iterations of the separatrix map, which establishes the validity of the use of the separatrix map.

  17. Discrete solitons and vortices on anisotropic lattices

    SciTech Connect (OSTI)

    Kevrekidis, P.G. [Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515 (United States); Frantzeskakis, D.J. [Department of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784 (Greece); Carretero-Gonzalez, R. [Nonlinear Dynamical Systems Group, Department of Mathematics and Statistics, and Computational Science Research Center, San Diego State University, San Diego, California 92182-7720 (United States); Malomed, B.A. [Department of Interdisciplinary Studies, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978 (Israel); Bishop, A.R. [Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2005-10-01T23:59:59.000Z

    We consider the effects of anisotropy on solitons of various types in two-dimensional nonlinear lattices, using the discrete nonlinear Schroedinger equation as a paradigm model. For fundamental solitons, we develop a variational approximation that predicts that broad quasicontinuum solitons are unstable, while their strongly anisotropic counterparts are stable. By means of numerical methods, it is found that, in the general case, the fundamental solitons and simplest on-site-centered vortex solitons ('vortex crosses') feature enhanced or reduced stability areas, depending on the strength of the anisotropy. More surprising is the effect of anisotropy on the so-called 'super-symmetric' intersite-centered vortices ('vortex squares'), with the topological charge S equal to the square's size M: we predict in an analytical form by means of the Lyapunov-Schmidt theory, and confirm by numerical results, that arbitrarily weak anisotropy results in dramatic changes in the stability and dynamics in comparison with the degenerate, in this case, isotropic, limit.

  18. Kinetic study of ion-acoustic plasma vortices

    SciTech Connect (OSTI)

    Khan, S. A. [National Centre for Physics (NCP), Quaid-i-Azam University Campus, Islamabad 45320 (Pakistan); Aman-ur-Rehman, E-mail: amansadiq@gmail.com [Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O. Nilore, Islamabad 45650 (Pakistan); Mendonca, J. T. [IPFN, Instituto Superior Téchnico, Av. Rovisco Pais 1, 1049-001 Lisboa (Portugal)

    2014-09-15T23:59:59.000Z

    The kinetic theory of electron plasma waves with finite orbital angular momentum has recently been introduced by Mendonca. This model shows possibility of new kind of plasma waves and instabilities. We have extended the theory to ion-acoustic plasma vortices carrying orbital angular momentum. The dispersion equation is derived under paraxial approximation which exhibits a kind of linear vortices and their Landau damping. The numerical solutions are obtained and compared with analytical results which are in good agreement. The physical interpretation of the ion-acoustic plasma vortices and their Landau resonance conditions are given for typical case of Maxwellian plasmas.

  19. Reversing the Circulation of Magnetic Vortices

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

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

  20. Reversing the Circulation of Magnetic Vortices

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

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

  1. Bose-Einstein condensates of polaritons: Vortices and superfluidity...

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

    Bose-Einstein condensates of polaritons: Vortices and superfluidity May 10, 2011 at 3:00PM36-428 Benoit Deveaud-Pldran Ecole Polytechnique Fdrale de Lausanne abstract: The...

  2. Interaction of vortices in weakly viscous planar flows Thierry Gallay

    E-Print Network [OSTI]

    Gallay, Thierry

    Interaction of vortices in weakly viscous planar flows Thierry Gallay Universit´e de Grenoble I Institut Fourier, UMR CNRS 5582 B.P. 74 F-38402 Saint-Martin-d'H`eres, France Thierry.Gallay

  3. Interaction of vortices in weakly viscous planar flows Thierry Gallay

    E-Print Network [OSTI]

    Gallay, Thierry

    Interaction of vortices in weakly viscous planar flows Thierry Gallay Universitâ??e de Grenoble I Institut Fourier, UMR CNRS 5582 B.P. 74 F­38402 Saint­Martin­d'Hâ??eres, France Thierry.Gallay

  4. Dynamics of vortices in weakly interacting Bose-Einstein condensates

    E-Print Network [OSTI]

    Alexander Klein; Dieter Jaksch; Yanzhi Zhang; Weizhu Bao

    2007-10-03T23:59:59.000Z

    We study the dynamics of vortices in ideal and weakly interacting Bose-Einstein condensates using a Ritz minimization method to solve the two-dimensional Gross-Pitaevskii equation. For different initial vortex configurations we calculate the trajectories of the vortices. We find conditions under which a vortex-antivortex pair annihilates and is created again. For the case of three vortices we show that at certain times two additional vortices may be created, which move through the condensate and annihilate each other again. For a noninteracting condensate this process is periodic, whereas for small interactions the essential features persist, but the periodicity is lost. The results are compared to exact numerical solutions of the Gross-Pitaevskii equation confirming our analytical findings.

  5. J. Fluid Mech. (2000), vol. 421, pp. 3981. Printed in the United Kingdom c 2000 Cambridge University Press

    E-Print Network [OSTI]

    Kloosterziel, Rudolf C.

    2000-01-01T23:59:59.000Z

    J. Fluid Mech. (2000), vol. 421, pp. 39­81. Printed in the United Kingdom c 2000 Cambridge, the horizontal wind stress (vector), z the vertical unit vector pointing upwards and ws the vertical Ekman remaining vortices are determined, a simple expression for what fraction of the initial energy is converted

  6. Automation of soft lithography

    E-Print Network [OSTI]

    Kim, Hyung-Jun

    2006-01-01T23:59:59.000Z

    This dissertation is a final documentation of the project whose goal is demonstrating manufacturability of soft lithography. Specifically, our target is creating micron scale patterns of resists on a 3 square inch, relatively ...

  7. Analytic torsion, vortices and positive Ricci curvature

    E-Print Network [OSTI]

    Berman, Robert J

    2010-01-01T23:59:59.000Z

    We characterize the global maximizers of a certain non-local functional defined on the space of all positively curved metrics on an ample line bundle L over a Kahler manifold X. This functional is an adjoint version, introduced by Berndtsson, of Donaldson's L-functional and generalizes the Ding-Tian functional whose critical points are Kahler-Einstein metrics of positive Ricci curvature. Applications to (1) analytic torsions on Fano manifolds (2) Chern-Simons-Higgs vortices on tori and (3) Kahler geometry are given. In particular, proofs of conjectures of (1) Gillet-Soul\\'e and Fang (concerning the regularized determinant of Dolbeault Laplacians on the two-sphere) (2) Tarantello and (3) Aubin (concerning Moser-Trudinger type inequalities) in these three settings are obtained. New proofs of some results in Kahler geometry are also obtained, including a lower bound on Mabuchi's K-energy and the uniqueness result for Kahler-Einstein metrics on Fano manifolds of Bando-Mabuchi. This paper is a substantially extend...

  8. Reversing the Circulation of Magnetic Vortices

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonant Soft X-Ray ScatteringBenefits »Reuben|

  9. Reversing the Circulation of Magnetic Vortices

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonant Soft X-Ray ScatteringBenefits »Reuben|Reversing

  10. Reversing the Circulation of Magnetic Vortices

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

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

  11. Reversing the Circulation of Magnetic Vortices

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

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

  12. Drift and ion acoustic wave driven vortices with superthermal electrons

    SciTech Connect (OSTI)

    Ali Shan, S. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad (Pakistan); National Centre For Physics (NCP), Shahdra Valley Road, QAU Campus, 44000 Islamabad (Pakistan); Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad (Pakistan); Haque, Q. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad (Pakistan); National Centre For Physics (NCP), Shahdra Valley Road, QAU Campus, 44000 Islamabad (Pakistan)

    2012-08-15T23:59:59.000Z

    Linear and nonlinear analysis of coupled drift and acoustic mode is presented in an inhomogeneous electron-ion plasma with {kappa}-distributed electrons. A linear dispersion relation is found which shows that the phase speed of both the drift wave and the ion acoustic wave decreases in the presence of superthermal electrons. Several limiting cases are also discussed. In the nonlinear regime, stationary solutions in the form of dipolar and monopolar vortices are obtained. It is shown that the condition for the boundedness of the solution implies that the speed of drift wave driven vortices reduces with increase in superthermality effect. Ignoring density inhomogeniety, it is investigated that the lower and upper limits on the speed of the ion acoustic driven vortices spread with the inclusion of high energy electrons. The importance of results with reference to space plasmas is also pointed out.

  13. Vorticity Preserving Flux Corrected Transport Scheme for the Acoustic Equations

    SciTech Connect (OSTI)

    Lung, Tyler B. [Los Alamos National Laboratory; Roe, Phil [University of Michigan; Morgan, Nathaniel R. [Los Alamos National Laboratory

    2012-08-15T23:59:59.000Z

    Long term research goals are to develop an improved cell-centered Lagrangian Hydro algorithm with the following qualities: 1. Utilizes Flux Corrected Transport (FCT) to achieve second order accuracy with multidimensional physics; 2. Does not rely on the one-dimensional Riemann problem; and 3. Implements a form of vorticity control. Short term research goals are to devise and implement a 2D vorticity preserving FCT solver for the acoustic equations on an Eulerian mesh: 1. Develop a flux limiting mechanism for systems of governing equations with symmetric wave speeds; 2. Verify the vorticity preserving properties of the scheme; and 3. Compare the performance of the scheme to traditional MUSCL-Hancock and other algorithms.

  14. Mechanics of Individual, Isolated Vortices in a Cuprate Superconductor

    E-Print Network [OSTI]

    Ophir M. Auslaender; Lan Luan; Eric W. J. Straver; Jennifer E. Hoffman; Nicholas C. Koshnick; Eli Zeldov; Douglas A. Bonn; Ruixing Liang; Walter N. Hardy; Kathryn A. Moler

    2008-09-16T23:59:59.000Z

    Superconductors often contain quantized microscopic whirlpools of electrons, called vortices, that can be modeled as one-dimensional elastic objects. Vortices are a diverse playground for condensed matter because of the interplay between thermal fluctuations, vortex-vortex interactions, and the interaction of the vortex core with the three-dimensional disorder landscape. While vortex matter has been studied extensively, the static and dynamic properties of an individual vortex have not. Here we employ magnetic force microscopy (MFM) to image and manipulate individual vortices in detwinned, single crystal YBa2Cu3O6.991 (YBCO), directly measuring the interaction of a moving vortex with the local disorder potential. We find an unexpected and dramatic enhancement of the response of a vortex to pulling when we wiggle it transversely. In addition, we find enhanced vortex pinning anisotropy that suggests clustering of oxygen vacancies in our sample and demonstrates the power of MFM to probe vortex structure and microscopic defects that cause pinning.

  15. Transverse commensurability effect for vortices on periodic pinning arrays

    SciTech Connect (OSTI)

    Reichhardt, Charles [Los Alamos National Laboratory; Reichhardt, Cynthia J [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    Using computer simulations, we demonstrate a type of commensurability that occurs for vortices moving longitudinally through periodic pinning arrays in the presence of an additional transverse driving force. As a function of vortex density, there is a series of broad maxima in the transverse critical depinning force that do not fall at the matching fields where the number of vortices equals an integer multiple of the number of pinning sites. The commensurability effects are associated with dynamical states in which evenly spaced structures consisting of one or more moving rows of vortices form between rows of pinning sites. Remarkably, the critical transverse depinning force can be more than an order of magnitude larger than the longitudinal depinning force.

  16. Primary crossflow vortices, secondary absolute instabilities and their control in the rotating-disk boundary layer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Primary crossflow vortices, secondary absolute instabilities and their control in the rotating patterns of crossflow vortices are derived by employing asymptotic techniques. This approach accounts three-dimensional velocity profiles, are subject to inviscid crossflow in- stabilities and rapidly

  17. American Institute of Aeronautics and Astronautics The Influence of Streamwise Vorticity

    E-Print Network [OSTI]

    vorticity on circular cylinders in crossflow and on turbine blades are considered. The observations to relate the streamwise vorticity studied by Kestin and Wood to the more aggressive crossflow instability

  18. Soft matter with soft particles Christos N. Likos

    E-Print Network [OSTI]

    Likos, Christos N.

    properties of concentrated solutions of two novel kinds of soft matter systems: star-shaped polymers of soft matter systems under external influences and promising perspectives for the fabrication of new Perhaps the most fascinating aspect of soft matter science lies in the fact that the physical systems

  19. The influence of convective activity on the vorticity budget 

    E-Print Network [OSTI]

    Townsend, Tamara L

    1987-01-01T23:59:59.000Z

    . Continued. ~E' i~ QE I ~ tt Jtm a tt NE v~ l / tmt ta' NE ~~f IIIY G NE~~ NE a/+ NE NE NE NE 1st NE Fig. 13. Radar summary for 1435 GNT 10 Apri. l 1979. NE I l. c I E j~7 ~ NE NE MP- Qo+ Fig. 14. Radar summary for 2235 GMT 10 April 1979... experiment. 15 3 Average values of terms in the vorticity equation for a convective (Area 1) and a nonconvective (Area 2) area during AVE VII. Units of 10 s 145 4 Average values of terms in the vorticity equation for a convective (Area 1) and a...

  20. Baryonic Bound State of Vortices in Multicomponent Superconductors

    E-Print Network [OSTI]

    Muneto Nitta; Minoru Eto; Toshiaki Fujimori; Keisuke Ohashi

    2012-07-30T23:59:59.000Z

    We construct a bound state of three 1/3-quantized Josephson coupled vortices in three-component superconductors with intrinsic Josephson couplings, which may be relevant with regard to iron-based superconductors. We find a Y-shaped junction of three domain walls connecting the three vortices, resembling the baryonic bound state of three quarks in QCD. The appearance of the Y-junction (but not a Delta-junction) implies that in both cases of superconductors and QCD, the bound state is described by a genuine three-body interaction (but not by the sum of two-body interactions). We also discuss a confinement/deconfinement phase transition.

  1. Self assembly in soft matter 

    E-Print Network [OSTI]

    Chremos, Alexandros

    2009-01-01T23:59:59.000Z

    The term “soft matter” applies to a variety of physical systems, such as liquids, colloids, polymers, foams, gels, and granular materials. The most fascinating aspect of soft matter lies in the fact that they are not ...

  2. Self Assembly in Soft Matter 

    E-Print Network [OSTI]

    Chremos, Alexandros

    2009-01-01T23:59:59.000Z

    The term “soft matter” applies to a variety of physical systems, such as liquids, colloids, polymers, foams, gels, and granular materials. The most fascinating aspect of soft matter lies in the fact that they are not ...

  3. Longtime asymptotics of the NavierStokes and vorticity equations on R 3

    E-Print Network [OSTI]

    Gallay, Thierry

    Long­time asymptotics of the Navier­Stokes and vorticity equations on R 3 Thierry Gallay Universit

  4. Soft gamma repeaters Kevin Hurley *

    E-Print Network [OSTI]

    California at Berkeley, University of

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1331 1. Introduction The soft gamma repeaters (SGRs) are sporadic sources of bursts of X- and gamma-rays), and a rather soft spectrum compared to those of cosmic gamma-ray bursts; a rough description of the spectrumReview Soft gamma repeaters Kevin Hurley * University of California, Berkeley, Space Sciences

  5. THE FORMATION OF CONCENTRIC VORTICITY STRUCTURES IN TYPHOONS Department of Atmospheric Sciences

    E-Print Network [OSTI]

    Chang, Chih-Pei

    the interaction between a small and strong inner vortex (the tropical cyclone core) and neighboring weak vortices (the vorticity induced by the moist convection outside the central vortex of a tropical cyclone) a separation distance between the neighboring vorticity field and the core vortex that is within three to four

  6. Controlled Manipulation of Individual Vortices in a Superconductor (Article begins on next page)

    E-Print Network [OSTI]

    Heller, Eric

    Controlled Manipulation of Individual Vortices in a Superconductor (Article begins on next page, and Kathryn A. Moler. 2008. Controlled manipulation of individual vortices in a superconductor. Applied.InstRepos:dash.current.terms-of- use#OAP #12;Controlled Manipulation of Individual Vortices in a Superconductor E. W. J. Straver,1 J. E

  7. A Climatology of Midlatitude Mesoscale Convective Vortices in the Rapid Update Cycle

    E-Print Network [OSTI]

    Johnson, Richard H.

    A Climatology of Midlatitude Mesoscale Convective Vortices in the Rapid Update Cycle ERIC P. JAMES of mesoscale convective vortices (MCVs) occurring in the state of Oklahoma during the late spring and summer, true MCVs represent only about 20% of the mesoscale relative vorticity maxima detected by the algorithm

  8. A direct-write thick-film lithography process for multi-parameter control of tooling in continuous roll-to-roll microcontact printing

    E-Print Network [OSTI]

    Nietner, Larissa F

    2014-01-01T23:59:59.000Z

    Roll-to-roll (R2R) microcontact printing ([mu]CP) aims to transform micron-precision soft lithography in a continuous, large-scale, high-throughput process for large-area surface patterning, flexible electronics and ...

  9. COPLANAR DIGITAL MICROFLUIDICS USING STANDARD PRINTED CIRCUIT BOARD PROCESSES

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    COPLANAR DIGITAL MICROFLUIDICS USING STANDARD PRINTED CIRCUIT BOARD PROCESSES P.Y. Paik1 , V circuit board (PCB) and 3. Transport and mixing in an "open" microfluidic substrate. Similar to "soft-flow microfluidics, this work allows researchers to easily experiment with discrete-flow microfluidics (digital

  10. Three-dimensional stability of Burgers vortices Thierry Gallay

    E-Print Network [OSTI]

    Gallay, Thierry

    Three-dimensional stability of Burgers vortices Thierry Gallay Institut Fourier Universit´e de Grenoble I BP 74 38402 Saint-Martin-d'H`eres, France Thierry.Gallay@ujf-grenoble.fr Yasunori Maekawa and then in the general case by Gallay and Wayne [9], see also [2, 12, 13]. Moreover, a lot is known about the spectrum

  11. Three-dimensional stability of Burgers vortices Thierry Gallay

    E-Print Network [OSTI]

    Three-dimensional stability of Burgers vortices Thierry Gallay Institut Fourier Universit´e de Grenoble I BP 74 38402 Saint-Martin-d'H`eres, France Thierry.Gallay@ujf-grenoble.fr Yasunori Maekawa and then by Gallay and Wayne [11] in the general case. Moreover, a lot is known about the spectrum of the linearized

  12. Interaction of vortices in viscous planar flows Thierry Gallay

    E-Print Network [OSTI]

    Interaction of vortices in viscous planar flows Thierry Gallay Universit´e de Grenoble I Institut Fourier, UMR CNRS 5582 B.P. 74 F-38402 Saint-Martin-d'H`eres, France Thierry.Gallay@ujf-grenoble.fr August

  13. Evolution of isolated turbulent trailing vortices Karthik Duraisamy1,a

    E-Print Network [OSTI]

    Alonso, Juan J.

    Evolution of isolated turbulent trailing vortices Karthik Duraisamy1,a and Sanjiva K. Lele2,b 1 evolution of a low swirl-number turbulent Batchelor vortex is studied using pseudospectral direct numerical application of boundary conditions. The physics of the evolution is investigated with an emphasis

  14. Noncommutative effective theory of vortices in a complex scalar field

    E-Print Network [OSTI]

    C. D. Fosco; A. Lopez

    2002-03-08T23:59:59.000Z

    We derive a noncommutative theory description for vortex configurations in a complex field in 2+1 dimensions. We interpret the Magnus force in terms of the noncommutativity, and obtain some results for the quantum dynamics of the system of vortices in that context.

  15. Centrum Wiskunde & Informatica Statistical relevance of vorticity conservation

    E-Print Network [OSTI]

    Frank, Jason

    of potential vorticity along particle paths using the HPM method significantly influences the mean state of Computational Physics August 7, 2009 #12;The Hamiltonian particle-mesh (HPM) method was originally proposed the mass of the fluid and persist during the flow evolution. The HPM method is symplectic, and one can

  16. BNL | CFN: Soft & Biological Nanomaterials

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

    Soft and Bio Nanomaterials Contact: Oleg Gang Novel methods for system fabrication are required in order to build materials and devices that can take advantage of rich variety...

  17. A study of vorticity formation in high energy nuclear collisions

    E-Print Network [OSTI]

    Becattini, F; Rolando, V; Beraudo, A; Del Zanna, L; De Pace, A; Nardi, M; Pagliara, G; Chandra, V

    2015-01-01T23:59:59.000Z

    We present a quantitative study of vorticity formation in peripheral ultrarelativistic heavy ion collisions at sqrt(s_NN) = 200 GeV by using the ECHO-QGP numerical code, implementing relativistic dissipative hydrodynamics in the causal Israel-Stewart framework in 3+1 dimensions with an initial Bjorken flow profile. We consider and discuss different definitions of vorticity which are relevant in relativistic hydrodynamics. After demonstrating the excellent capabilities of our code, we show that, with the initial conditions needed to reproduce the measured directed flow in peripheral collisions corresponding to an average impact parameter b=11.6 fm and with the Bjorken flow profile for a viscous Quark Gluon Plasma with eta/s=0.16 fixed, a vorticity of up to 0.05 c/fm can develop at freezeout. The ensuing polarization of Lambda baryons is at most of the order of 1% at midrapidity. We show that the amount of developed directed flow is sensitive to both the initial angular momentum of the plasma and its viscosity.

  18. Reversible Ratchet Effects for Vortices in Conformal Pinning Arrays

    E-Print Network [OSTI]

    C. Reichhardt; D. Ray; C. J. Olson Reichhardt

    2015-04-01T23:59:59.000Z

    A conformal transformation of a uniform triangular pinning array produces a structure called a conformal crystal which preserves the six-fold ordering of the original lattice but contains a gradient in the pinning density. Here we use numerical simulations to show that vortices in type-II superconductors driven with an ac drive over gradient pinning arrays produce the most pronounced ratchet effect over a wide range of parameters for a conformal array, while square gradient or random gradient arrays with equivalent pinning densities give reduced ratchet effects. In the conformal array, the larger spacing of the pinning sites in the direction transverse to the ac drive permits easy funneling of interstitial vortices for one driving direction, producing the enhanced ratchet effect. In the square array, the transverse spacing between pinning sites is uniform, giving no asymmetry in the funneling of the vortices as the driving direction switches, while in the random array, there are numerous easy-flow channels present for either direction of drive. We find multiple ratchet reversals in the conformal arrays as a function of vortex density and ac amplitude, and correlate the features with a reversal in the vortex ordering, which is greater for motion in the ratchet direction. The enhanced conformal pinning ratchet effect can also be realized for colloidal particles moving over a conformal array, indicating the general usefulness of conformal structures for controlling the motion of particles.

  19. Windows XP - LPR Printing

    E-Print Network [OSTI]

    dbrown

    2004-07-27T23:59:59.000Z

    Printer Setup in Windows XP. To print to the math department printers in Windows XP, “Print Services for Unix” must be installed. To begin installation of “

  20. Detecting vortices in superconductors: Extracting one-dimensional topological singularities from a discretized complex scalar field

    E-Print Network [OSTI]

    Phillips, C L; Karpeyev, D; Glatz, A

    2015-01-01T23:59:59.000Z

    In type-II superconductors, the dynamics of superconducting vortices determine their transport properties. In the Ginzburg-Landau theory, vortices correspond to topological defects in the complex order parameter. Extracting their precise positions and motion from discretized numerical simulation data is an important, but challenging task. In the past, vortices have mostly been detected by analyzing the magnitude of the complex scalar field representing the order parameter and visualized by corresponding contour plots and isosurfaces. However, these methods, primarily used for small-scale simulations, blur the fine details of the vortices, scale poorly to large-scale simulations, and do not easily enable isolating and tracking individual vortices. Here we present a method for exactly finding the vortex core lines from a complex order parameter field. With this method, vortices can be easily described at a resolution even finer than the mesh itself. The precise determination of the vortex cores allows the inter...

  1. New Double Soft Emission Theorems

    E-Print Network [OSTI]

    Freddy Cachazo; Song He; Ellis Ye Yuan

    2015-03-16T23:59:59.000Z

    We study the behavior of the tree-level S-matrix of a variety of theories as two particles become soft. By analogy with the recently found subleading soft theorems for gravitons and gluons, we explore subleading terms in double soft emissions. We first consider double soft scalar emissions and find subleading terms that are controlled by the angular momentum operator acting on hard particles. The order of the subleading theorems depends on the presence or not of color structures. Next we obtain a compact formula for the leading term in a double soft photon emission. The theories studied are a special Galileon, DBI, Einstein-Maxwell-Scalar, NLSM and Yang-Mills-Scalar. We use the recently found CHY representation of these theories in order to give a simple proof of the leading order part of all these theorems

  2. Active Vorticity Control in a Shear Flow Using a Flapping Foil

    E-Print Network [OSTI]

    Gopalkrishnan, R.

    1994-01-01T23:59:59.000Z

    It is shown experimentally that free shear flows can be substantially altered through direct control of the large coherent vortices present in the flow.

  3. Energy Density of Vortices in the Schroedinger Picture

    E-Print Network [OSTI]

    J. D. Laenge; M. Engelhardt; H. Reinhardt

    2003-01-31T23:59:59.000Z

    The one-loop energy density of an infinitely thin static magnetic vortex in SU(2) Yang-Mills theory is evaluated using the Schroedinger picture. Both the gluonic fluctuations as well as the quarks in the vortex background are included. The energy density of the magnetic vortex is discussed as a function of the magnetic flux. The center vortices correspond to local minima in the effective potential. These minima are degenerated with the perturbative vacuum if the fermions are ignored. Inclusion of fermions lifts this degeneracy, raising the vortex energy above the energy of the perturbative vacuum.

  4. Elastic contribution to interaction of vortices in uniaxial superconductors

    SciTech Connect (OSTI)

    Kogan, Vladimir [Ames Laboratory, DOE; Department of Physics, Iowa State University, Ames, Iowa

    2013-10-24T23:59:59.000Z

    The stress caused by vortices in tetragonal superconductors contributes to the intervortex interaction which depends on vortex orientation within the crystal, on elastic moduli, and is attractive within certain angular regions even in fields along the c crystal axis. For sufficiently strong stress dependence of the critical temperature, this contribution may result in distortions of the hexagonal vortex lattice for H||c. In small fields it leads to formation of a square vortex lattice with a fixed H independent spacing. This should be seen in the magnetization M(H) as a discontinuous jump of magnetization at the transition from the Meissner to mixed states.

  5. Dynamics and control of the system of a 2-D rigid circular cylinder and point vortices

    E-Print Network [OSTI]

    Shashikanth, Banavara N.

    Dynamics and control of the system of a 2-D rigid circular cylinder and point vortices Zhanhua Ma dynamically interacting with N point vortices in its vicinity [16] is an idealized example of coupled solid from a fluid mechanics viewpoint as well as a dynamics and control viewpoint. The problem has many

  6. Structure of Optical Vortices Jennifer E. Curtis and David G. Grier

    E-Print Network [OSTI]

    Grier, David

    Structure of Optical Vortices Jennifer E. Curtis and David G. Grier Dept. of Physics, James Franck: January 22, 2003) Helical modes of light can be focused into toroidal optical traps known as optical of optical vortices created with the dynamic holographic optical tweezer technique reveal an unsuspected

  7. Structure of Optical Vortices Jennifer E. Curtis and David G. Grier

    E-Print Network [OSTI]

    Grier, David

    Structure of Optical Vortices Jennifer E. Curtis and David G. Grier Dept. of Physics, James Franck 1, 2012) Helical modes of light can be focused into toroidal optical traps known as optical vortices, which are capable of localizing and applying torques to small volumes of matter. Measurements of optical

  8. Modulated optical vortices Jennifer E. Curtis 1 and David G. Grier

    E-Print Network [OSTI]

    Grier, David

    Modulated optical vortices Jennifer E. Curtis 1 and David G. Grier Dept. of Physics, James Franck­beam optical gradient force traps created by focusing helical modes of light are known as optical vortices. Modulating the helical pitch of such a modes' wavefront yields a new class of optical traps whose dynamically

  9. Wavelet Analysis of the Conditional Vorticity Budget in Fully Developed Homogeneous Isotropic

    E-Print Network [OSTI]

    École Normale Supérieure

    Wavelet Analysis of the Conditional Vorticity Budget in Fully Developed Homogeneous Isotropic. This decomposition is achieved by the Coherent Vorticity Extraction based on orthogonal wavelets. The analysis allows wavelet decomposition. Farge et al. [4] proposed a method to extract the coherent structures out

  10. Patterns of Precipitation and Mesolow Evolution in Midlatitude Mesoscale Convective Vortices

    E-Print Network [OSTI]

    Johnson, Richard H.

    Patterns of Precipitation and Mesolow Evolution in Midlatitude Mesoscale Convective Vortices ERIC P manifestations of mesoscale convective vortices (MCVs) that traversed Oklahoma during the periods May­August 2002 Profiler Network data. Forty-five MCVs that developed from mesoscale convective systems (MCSs) have been

  11. THE MOTION OF SUPERCONDUCTING VORTICES IN THIN FILMS OF VARYING THICKNESS

    E-Print Network [OSTI]

    Chapman, Jon

    with superconductor/vacuum interfaces is considered. A vortex is #12;rst shown to intersect such an interface normallyTHE MOTION OF SUPERCONDUCTING VORTICES IN THIN FILMS OF VARYING THICKNESS S.J. CHAPMAN #3; D.R. HERON y MATHEMATICAL INSTITUTE OXFORD OX1 3LB UK Abstract. The interaction of superconducting vortices

  12. MOTION AND HOMOGENISATION OF VORTICES IN ANISOTROPIC TYPE-II SUPERCONDUCTORS

    E-Print Network [OSTI]

    Chapman, Jon

    MOTION AND HOMOGENISATION OF VORTICES IN ANISOTROPIC TYPE-II SUPERCONDUCTORS S.J. CHAPMAN #3; G in an anisotropic superconductor is considered. For a system of well separated vortices, each vortex is found. Key words. superconductivity, Ginzburg-Landau equations, mean-#12;eld, anisotropic, high

  13. Effects of sample geometry on the dynamics and configurations of vortices in mesoscopic superconductors

    E-Print Network [OSTI]

    Kim, Sangbum; Burkardt, John; Gunzburger, Max; Peterson, Janet.

    2007-01-01T23:59:59.000Z

    of sample size and cross-sectional shape on vortex nucleation and penetration. As is well known, more vortices enter the sample as the sample size grows. It is also found that if a small indentation is made on the sample boundary, vortices can be made...

  14. Controlled manipulation of individual vortices in a superconductor E. W. J. Straver,1

    E-Print Network [OSTI]

    Moler, Kathryn A.

    Controlled manipulation of individual vortices in a superconductor E. W. J. Straver,1 J. E. Hoffman semiconductor,7 while vortices adjacent to an elec- tron gas in a quantum-Hall state may allow the creation on a cantilever with a sharp magnetic tip, such that scanning the cantilever at a constant height z above

  15. Dissecting Soft Radiation with Factorization

    E-Print Network [OSTI]

    Iain W. Stewart; Frank J. Tackmann; Wouter J. Waalewijn

    2015-02-10T23:59:59.000Z

    An essential part of high-energy hadronic collisions is the soft hadronic activity that underlies the primary hard interaction. It includes soft radiation from the primary hard partons, secondary multiple parton interactions (MPI), and factorization-violating effects. The invariant mass spectrum of the leading jet in $Z$+jet and $H$+jet events is directly sensitive to these effects, and we use a QCD factorization theorem to predict its dependence on the jet radius $R$, jet $p_T$, jet rapidity, and partonic process for both the perturbative and nonperturbative components of primary soft radiation. We prove that the nonperturbative contributions involve only odd powers of $R$, and the linear $R$ term is universal for quark and gluon jets. The hadronization model in PYTHIA8 agrees well with these properties. The perturbative soft initial state radiation (ISR) has a contribution that depends on the jet area in the same way as the underlying event, but this degeneracy is broken by dependence on the jet $p_T$. The size of this soft ISR contribution is proportional to the color state of the initial partons, yielding the same positive contribution for $gg\\to Hg$ and $gq\\to Zq$, but a negative interference contribution for $q\\bar q\\to Z g$. Hence, measuring these dependencies allows one to separate hadronization, soft ISR, and MPI contributions in the data.

  16. Properties of Soft Semi-open and Soft semi-closed Sets

    E-Print Network [OSTI]

    Sabir Hussain

    2014-09-09T23:59:59.000Z

    Molodstov[10] introduced soft set theory as a new mathematical approach for solving problems having uncertainties. Many researchers worked on the findings of structures of soft set theory and applied to many problems having uncertainties. Recently, Bin Chen [3-4] introduced and explored the properties of soft semi-open sets and soft-semi-closed sets in soft topological spaces. In this paper we continue to investigate the properties of soft semi-open and soft semi-closed sets in soft topological spaces. We define soft semi-exterior, soft semi-boundary, soft semi-open neighbourhood and soft semi-open neighbourhood systems in soft topological spaces. Moreover we discuss the characterizations and properties of soft semi-interior, soft semi-exterior, soft semi-closure and soft semi-boundary. We also develop the relationship between soft semi-clopen sets and soft semi-boundary. The addition of this topic in literature will strengthen the theoretical base for further applications of soft topology in decision analysis and information systems.

  17. Survival and Structure of Dusty Vortices in Protoplanetary Discs

    E-Print Network [OSTI]

    Crnkovic-Rubsamen, Ivo; Stone, James M

    2015-01-01T23:59:59.000Z

    We have studied the impact of dust feedback on the survival and structure of vortices in protoplanetary discs using 2-D shearing box simulations with Lagrangian dust particles. We consider dust with a variety of sizes (stopping time $t_s = 10^{-2}\\Omega^{-1} - 10^{2}\\Omega^{-1}$, from fully coupled with the gas to the decoupling limit. We find that a vortex is destroyed by dust feedback when the total dust-to-gas mass ratio within the vortex is larger than 30-50%, independent of the dust size. The dust distribution can still be asymmetric in some cases after the vortex has been destroyed. With smaller amounts of dust, a vortex can survive for at least 100 orbits, and the maximum dust surface density within the vortex can be more than 100 times larger than the gas surface density, potentially facilitating planetesimal formation. On the other hand, in these stable vortices, small ($t_s \\Omega^{-1}$) dust grains concentrate differently and affect the gas dynamics in different ways. The distribution of large dus...

  18. atp fueled soft: Topics by E-print Network

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

    lead sphere weighing about 100 kg. Thus the proliferation resistance of thorium fuel cycles depends very much upon how they are implemented. The original version of this...

  19. australis stars soft: Topics by E-print Network

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

    Since none of the stars of these clusters has shown in the last years significant flux variations in the infrared, these two SGRs do not form bound binary systems with...

  20. arctic soft coral: Topics by E-print Network

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

    in the surroundings. Keywords Artificial reefs ? Coral reefs ? Biodiversity ? Multivariate analysis ? Red Sea Introduction Coral reefs worldwide Benayahu, Yehuda 10...

  1. Manipulating microwaves with magnetic-dipolar-mode vortices

    SciTech Connect (OSTI)

    Kamenetskii, E. O.; Sigalov, M.; Shavit, R. [Department of Electrical and Computer Engineering, Ben Gurion University of the Negev, IL-84 105 Beer Sheva (Israel)

    2010-05-15T23:59:59.000Z

    There has been a surge of interest in the subwavelength confinement of electromagnetic fields. It is well known that, in optics, subwavelength confinement can be obtained from surface plasmon (quasielectrostatic) oscillations. In this article, we propose to realize subwavelength confinement in microwaves by using dipolar-mode (quasimagnetostatic) magnon oscillations in ferrite particles. Our studies of interactions between microwave electromagnetic fields and small ferrite particles with magnetic-dipolar-mode (MDM) oscillations show strong localization of electromagnetic energy. MDM oscillations in a ferrite disk are at the origin of topological singularities resulting in Poynting vector vortices and symmetry breakings of the microwave near fields. We show that new subwavelength microwave structures can be realized based on a system of interacting MDM ferrite disks. Wave propagation of electromagnetic signals in such structures is characterized by topological phase variations. Interactions of microwave fields with an MDM ferrite disk and MDM-disk arrays open a perspective for creating engineered electromagnetic fields with unique symmetry properties.

  2. Existence of Optical Vortices in Saturable Non-linearity

    E-Print Network [OSTI]

    Luciano Medina

    2015-05-22T23:59:59.000Z

    Optical propagation in non-linear media and the formation of optical vortices as dark holes is an area of extensive research in modern optical physics. Governed by a non-linear Schr\\"odinger equation, with self-focusing saturable non-linearity, we establish an existence theory for a unique class of spatially localized beams describing ring-profile vortex solitons. Our first type of results are established via a constrained minimization problem. We prove the existence of positive radially symmetric solutions and give necessary conditions restricting the wave propagation constant in terms of the topological charge and saturation constant. As demanded by beam confinement, we prove the exponential decay of the soliton amplitude at infinity. Secondly, we use a min-max technique to prove the existence of additional non-trivial solutions that arise as saddle-points of a corresponding indefinite action functional.

  3. Nuclear vorticity and the low-energy nuclear response - Towards the neutron drip line

    E-Print Network [OSTI]

    P. Papakonstantinou; J. Wambach; E. Mavrommatis; V. Yu. Ponomarev

    2004-11-16T23:59:59.000Z

    The transition density and current provide valuable insight into the nature of nuclear vibrations. Nuclear vorticity is a quantity related to the transverse transition current. In this work, we study the evolution of the strength distribution, related to density fluctuations, and the vorticity strength distribution, as the neutron drip line is approached. Our results on the isoscalar, natural-parity multipole response of Ni isotopes, obtained by using a self-consistent Skyrme-Hartree-Fock + Continuum RPA model, indicate that, close to the drip line, the low-energy response is dominated by L>1 vortical transitions.

  4. 3D Printing Electronics

    E-Print Network [OSTI]

    Stryk, Oskar von

    Login Register Home Videos Jobs Games 3D Printing Electronics Design Software Designer Edge for 3D Printing · -- B6 Sigma Labs (ticker SGLB) is not the same company as Sigma Technologies

  5. Soft-Input Soft-Output King Decoder for Coded MIMO Wireless Communications

    E-Print Network [OSTI]

    Soft-Input Soft-Output King Decoder for Coded MIMO Wireless Communications Giuseppe PAPA, Domenico,{domenico.ciuonzo,gianmarco.romano,pierluigi.salvorossi}@unina2.it Abstract--This paper presents a Soft-Input Soft-Output (SISO) version of the King Decoder (KD for Multiple-Input Multiple-Output (MIMO) communication systems. More specifically, four versions of the KD

  6. Resonant Soft X-Ray Scattering of Tri-Block Copolymers

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonant Soft X-Ray Scattering of Tri-Block Copolymers Print

  7. On the long time behaviour of stochastic vortices systems August 5, 2013

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    by their respective vorticities. For fixed n, we perform the rescalings of time and space used successfully by Gallay behavior for the two dimensional vortex equation has been successfully studied in Gallay and Wayne [5], who

  8. Contributions of the center vortices and vacuum domain in potentials between static sources

    E-Print Network [OSTI]

    Seyed Mohsen Hosseini Nejad; Sedigheh Deldar

    2015-03-04T23:59:59.000Z

    In this paper, we study the role of the domain structure of the Yang Mills vacuum. The Casimir scaling and $N$-ality are investigated in the potentials between static sources in various representations for $SU(2)$ and $SU(3)$ gauge groups based on the domain structure model using square ansatz for angle $\\alpha_{C}(x)$. We also discuss about the contributions of the vacuum domain and center vortices in the static potentials. As a result, the potentials obtained from vacuum domains agree with Casimir scaling better than the ones obtained from center vortices. The reasons of these observations are investigated by studying the behavior of the potentials obtained from vacuum domains and center vortices and the properties of the group factors. Then, the vacuum domains in $SU(N)$ and $G(2)$ gauge groups are compared and we argue that the $G(2)$ vacuum is filled with center vortices of its subgroups.

  9. The hydrodynamic stability of crossflow vortices in the Bdewadt boundary layer

    E-Print Network [OSTI]

    The hydrodynamic stability of crossflow vortices in the Bödewadt boundary layer N. A. Culverhouse the critical Reynolds number. extends the laminar flow region. decreasing the magnitude of the crossflow

  10. Friction and Diapycnal Mixing at a Slope: Boundary Control of Potential Vorticity

    E-Print Network [OSTI]

    Benthuysen, Jessica

    Although atmospheric forcing by wind stress or buoyancy flux is known to change the ocean’s potential vorticity (PV) at the surface, less is understood about PV modification in the bottom boundary layer. The adjustment of ...

  11. Soft evidential update for probabilistic multiagent systems

    E-Print Network [OSTI]

    Valtorta, Marco

    Soft evidential update for probabilistic multiagent systems Marco Valtorta a,* , Young-Gyun Kim. We give methodological guidance to model soft evidence in the form of beliefs (marginals) on single represented by a Bayesian network upon presentation of soft evidence. Our motivation is the desire to let

  12. A dynamic stability analysis of an aircraft passing through the trailing vortices of another aircraft

    E-Print Network [OSTI]

    De Santo, Robert James William

    1972-01-01T23:59:59.000Z

    A DYNAMIC STABILITY ANALYSIS OF AN AIRCRAFT PASSING THROUGH THE TRAILING VORTICES OF ANOTHER AIRCRAFT A Thesi~ x ROBERT J. MAE SANTO, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE December 1972 Major Subject: Aerospace Engineering A DYNAMIC STABILITY ANALYSIS OF AN AIRCRAFT PASSING THROUGH THE TRAILING VORTICES OF ANOTHER AIRCRAFT A Thesis by ROBERT J. W. DE SANTO) JR. Approved as to style...

  13. Inkjet printed electronics using copper nanoparticle ink

    E-Print Network [OSTI]

    Kang, Jin Sung; Kim, Hak Sung; Ryu, Jongeun; Thomas Hahn, H.; Jang, Seonhee; Joung, Jae Woo

    2010-01-01T23:59:59.000Z

    providing printed electronics using copper nanoparticles.0049-3 Inkjet printed electronics using copper nanoparticleand quality of the printed electronics. In this paper, we

  14. Wave turbulence and vortices in Bose-Einstein condensation

    E-Print Network [OSTI]

    Sergey Nazarenko; Miguel Onorato

    2005-07-25T23:59:59.000Z

    We report a numerical study of turbulence and Bose-Einstein condensation within the two-dimmensional Gross-Pitaevski model with repulsive interaction. In presence of weak forcing localized around some wave number in the Fourier space, we observe three qualitatively different evolution stages. At the initial stage a thermodynamic energy equipartition spectrum forms at both smaller and larger scales with respect to the forcing scale. This agrees with predictions of the the four-wave kinetic equation of the Wave Turbulence (WT) theory. At the second stage, WT breaks down at large scales and the interactions become strongly nonlinear. Here, we observe formation of a gas of quantum vortices whose number decreases due to an annihilation process helped by the acoustic component. This process leads to formation of a coherent-phase Bose-Einstein condensate. After such a coherent-phase condensate forms, evolution enters a third stage characterised by three-wave interactions of acoustic waves that can be described again using the WT theory.

  15. abnormal resistive zones: Topics by E-print Network

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

    NO PRINTING ZONE NO PRINTING ZONE NO PRINTING ZONE NO PRINTING ZONE Kainen, Paul C. 11 Seismic Amplitude Versus Offset (AVO) Character of Geopressured Transition Zones Geosciences...

  16. Apparatus for suppressing formation of vortices in the coolant fluid of a nuclear reactor and associated method

    DOE Patents [OSTI]

    Ekeroth, Douglas E. (Delmont, PA); Garner, Daniel C. (Murrysville, PA); Hopkins, Ronald J. (Pensacola, FL); Land, John T. (Pensacola, FL)

    1993-01-01T23:59:59.000Z

    An apparatus and method are provided for suppressing the formation of vortices in circulating coolant fluid of a nuclear reactor. A vortex-suppressing plate having a plurality of openings therein is suspended within the lower plenum of a reactor vessel below and generally parallel to the main core support of the reactor. The plate is positioned so as to intersect vortices which may form in the circulating reactor coolant fluid. The intersection of the plate with such vortices disrupts the rotational flow pattern of the vortices, thereby disrupting the formation thereof.

  17. Apparatus for suppressing formation of vortices in the coolant fluid of a nuclear reactor and associated method

    DOE Patents [OSTI]

    Ekeroth, D.E.; Garner, D.C.; Hopkins, R.J.; Land, J.T.

    1993-11-30T23:59:59.000Z

    An apparatus and method are provided for suppressing the formation of vortices in circulating coolant fluid of a nuclear reactor. A vortex-suppressing plate having a plurality of openings therein is suspended within the lower plenum of a reactor vessel below and generally parallel to the main core support of the reactor. The plate is positioned so as to intersect vortices which may form in the circulating reactor coolant fluid. The intersection of the plate with such vortices disrupts the rotational flow pattern of the vortices, thereby disrupting the formation thereof. 3 figures.

  18. Tailoring the flow of soft glasses by soft additives

    E-Print Network [OSTI]

    E. Zaccarelli; C. Mayer; A. Asteriadi; C. N. Likos; F. Sciortino; J. Roovers; H. Iatrou; N. Hadjichristidis; P. Tartaglia; H. Löwen; D. Vlassopoulos

    2005-11-15T23:59:59.000Z

    We examine the vitrification and melting of asymmetric star polymers mixtures by combining rheological measurements with mode coupling theory. We identify two types of glassy states, a {\\it single} glass, in which the small component is fluid in the glassy matrix of the big one and a {\\it double} glass, in which both components are vitrified. Addition of small star polymers leads to melting of {\\it both} glasses and the melting curve has a non-monotonic dependence on the star-star size ratio. The phenomenon opens new ways for externally steering the rheological behavior of soft matter systems.

  19. Structure, stability and evolution of 3D Rossby vortices in protoplanetary disks

    E-Print Network [OSTI]

    Richard, Samuel; Dizes, Stephane Le

    2013-01-01T23:59:59.000Z

    Large-scale persistent vortices are known to form easily in 2D disks via the Rossby wave or the baroclinic instability. In 3D, however, their formation and stability is a complex issue and still a matter of debate. We study the formation of vortices by the Rossby wave instability in a stratified inviscid disk and describe their three dimensional structure, stability and long term evolution. Numerical simulations are performed using a fully compressible hydrodynamical code based on a second order finite volume method. We assume a perfect gas law and a non-homentropic adiabatic flow.The Rossby wave instability is found to proceed in 3D in a similar way as in 2D. Vortices produced by the instability look like columns of vorticity in the whole disk thickness; the small vertical motions are related to a weak inclination of the vortex axis appearing during the development of the RWI. Vortices with aspect ratios larger than 6 are unaffected by the elliptical instability. They relax to a quasi-steady columnar structu...

  20. Constructing Amplitudes from Their Soft Limits

    SciTech Connect (OSTI)

    Boucher-Veronneau, Camille; Larkoski, Andrew J.; /SLAC

    2011-12-09T23:59:59.000Z

    The existence of universal soft limits for gauge-theory and gravity amplitudes has been known for a long time. The properties of the soft limits have been exploited in numerous ways; in particular for relating an n-point amplitude to an (n-1)-point amplitude by removing a soft particle. Recently, a procedure called inverse soft was developed by which 'soft' particles can be systematically added to an amplitude to construct a higher-point amplitude for generic kinematics. We review this procedure and relate it to Britto-Cachazo-Feng-Witten recursion. We show that all tree-level amplitudes in gauge theory and gravity up through seven points can be constructed in this way, as well as certain classes of NMHV gauge-theory amplitudes with any number of external legs. This provides us with a systematic procedure for constructing amplitudes solely from their soft limits.

  1. Register file soft error recovery

    DOE Patents [OSTI]

    Fleischer, Bruce M.; Fox, Thomas W.; Wait, Charles D.; Muff, Adam J.; Watson, III, Alfred T.

    2013-10-15T23:59:59.000Z

    Register file soft error recovery including a system that includes a first register file and a second register file that mirrors the first register file. The system also includes an arithmetic pipeline for receiving data read from the first register file, and error detection circuitry to detect whether the data read from the first register file includes corrupted data. The system further includes error recovery circuitry to insert an error recovery instruction into the arithmetic pipeline in response to detecting the corrupted data. The inserted error recovery instruction replaces the corrupted data in the first register file with a copy of the data from the second register file.

  2. Why is Tin so soft?

    E-Print Network [OSTI]

    J. Piekarewicz

    2007-05-10T23:59:59.000Z

    The distribution of isoscalar monopole strength in the neutron-even 112-124Sn-isotopes has been computed using a relativistic random-phase-approximation approach. The accurately-calibrated model used here (``FSUGold'') has been successful in reproducing both ground-state observables as well as collective excitations - including the giant monopole resonance (GMR) in 90Zr, 144Sm, and 208Pb. Yet this same model significantly overestimates the GMR energies in the Sn isotopes. It is argued that the question of ``Why is Tin so soft?'' becomes an important challenge to the field and one that should be answered without sacrificing the success already achieved by several theoretical models.

  3. Soft Costs | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol HomeFacebookScholarship Fund3Biology| Nationalof EnergyMitch Soderberg!Soft

  4. Compact organic vapor jet printing print head

    DOE Patents [OSTI]

    Forrest, Stephen R; McGraw, Gregory

    2013-12-24T23:59:59.000Z

    A first device is provided. The first device includes a print head, and a first gas source hermetically sealed to the print head. The print header further includes a first layer comprising a plurality of apertures, each aperture having a smallest dimension of 0.5 to 500 microns. A second layer is bonded to the first layer. The second layer includes a first via in fluid communication with the first gas source and at least one of the apertures. The second layer is made of an insulating material.

  5. On the Two-point Correlation of Potential Vorticity in Rotating and Stratified Turbulence

    E-Print Network [OSTI]

    Susan Kurien; Leslie M. Smith; Beth Wingate

    2006-03-15T23:59:59.000Z

    A framework is developed to describe the two-point statistics of potential vorticity in rotating and stratified turbulence as described by the Boussinesq equations. The Karman-Howarth equation for the dynamics of the two-point correlation function of potential vorticity reveals the possibility of inertial-range dynamics in certain regimes in the Rossby, Froude, Prandtl and Reynolds number parameters. For the case of large Rossby and Froude numbers, and for the case of quasi-geostrophic dynamics, a linear scaling law with 2/3 prefactor is derived for the third-order mixed correlation between potential vorticity and velocity, a result that is analogous to the Kolmogorov 4/5-law for the third-order velocity structure function in turbulence theory.

  6. Interactions of vortices with a flexible beam with applications in fluidic energy harvesting

    SciTech Connect (OSTI)

    Goushcha, O.; Elvin, N.; Andreopoulos, Y. [Department of Mechanical Engineering, The City College of New York, New York, New York 10031 (United States)

    2014-01-13T23:59:59.000Z

    A cantilever piezoelectric beam immersed in a flow and subjected to naturally occurring vortices such as those formed in the wake of bluff bodies can be used to generate electrical energy harvested in fluid flows. In this paper, we present the pressure distribution and deflection of a piezoelectric beam subjected to controlled vortices. A custom designed experimental facility is set up to study the interaction of individual and multiple vortices with the beam. Vortex tori are generated by an audio speaker and travel at controlled rates over the beam. Particle image velocimetry is used to measure the 2-D flow field induced by each vortex and estimate the effect of pressure force on the beam deflection.

  7. Synthesis of anisotropic swirling surface acoustic waves by inverse filter, towards integrated generators of acoustical vortices

    E-Print Network [OSTI]

    Riaud, Antoine; Charron, Eric; Bussonnière, Adrien; Matar, Olivier Bou

    2015-01-01T23:59:59.000Z

    From radio-electronics signal analysis to biological samples actuation, surface acoustic waves (SAW) are involved in a multitude of modern devices. Despite this versatility, SAW transducers developed up to date only authorize the synthesis of the most simple standing or progressive waves such as plane and focused waves. In particular, acoustical integrated sources able to generate acoustical vortices (the analogue of optical vortices) are missing. In this work, we propose a flexible tool based on inverse filter technique and arrays of SAW transducers enabling the synthesis of prescribed complex wave patterns at the surface of anisotropic media. The potential of this setup is illustrated by the synthesis of a 2D analog of 3D acoustical vortices, namely "swirling surface acoustic waves". Similarly to their 3D counterpart, they appear as concentric structures of bright rings with a phase singularity in their center resulting in a central dark spot. Swirling SAW can be useful in fragile sensors whose neighborhood...

  8. Engraving Print Classification

    SciTech Connect (OSTI)

    Hoelck, Daniel [Instituto de Fisica, P. Universidad Catolica de Valparaiso, Av. Brasil 2905, Valparaiso (Chile); Barbe, Joaquim [Grupo Felix Klein, Facultad de Ciencias, Universidad de Santiago de Chile, Av. Lib. Bernardo O'Higgins 3363 (Chile)

    2008-04-15T23:59:59.000Z

    A print is a mark, or drawing, made in or upon a plate, stone, woodblock or other material which is cover with ink and then is press usually into a paper reproducing the image on the paper. Engraving prints usually are image composed of a group of binary lines, specially those are made with relief and intaglio techniques. Varying the number and the orientation of lines, the drawing of the engraving print is conformed. For this reason we propose an application based on image processing methods to classify engraving prints.

  9. Two Species of Vortices in a massive Gauged Non-linear Sigma Model

    E-Print Network [OSTI]

    Alberto Alonso-Izquierdo; Wifredo Garcia Fuertes; Juan Mateos Guilarte

    2015-02-03T23:59:59.000Z

    Non-linear sigma models with scalar fields taking values on $\\mathbb{C}\\mathbb{P}^n$ complex manifolds are addressed. In the simplest $n=1$ case, where the target manifold is the $\\mathbb{S}^2$ sphere, we describe the scalar fields by means of stereographic maps. In this case when the $\\mathbb{U}(1)$ symmetry is gauged and Maxwell and mass terms are allowed, the model accommodates stable self-dual vortices of two kinds with different energies per unit length and where the Higgs field winds at the cores around the two opposite poles of the sphere. Allowing for dielectric functions in the magnetic field, similar and richer self-dual vortices of different species in the south and north charts can be found by slightly modifying the potential. Two different situations are envisaged: either the vacuum orbit lies on a parallel in the sphere, or one pole and the same parallel form the vacuum orbit. Besides the self-dual vortices of two species, there exist BPS domain walls in the second case. Replacing the Maxwell contribution of the gauge field to the action by the second Chern-Simons secondary class, only possible in $(2+1)$-dimensional Minkowski space-time, new BPS topological defects of two species appear. Namely, both BPS vortices and domain ribbons in the south and the north charts exist because the vacuum orbit consits of the two poles and one parallel. Formulation of the gauged $\\mathbb{C}\\mathbb{P}^2$ model in a Reference chart shows a self-dual structure such that BPS semi-local vortices exist. The transition functions to the second or third charts break the $\\mathbb{U}(1)\\times\\mathbb{S}\\mathbb{U}(2)$ semi-local symmetry, but there is still room for standard self-dual vortices of the second species. The same structures encompassing $N$ complex scalar fields are easily generalized to gauged $\\mathbb{C}\\mathbb{P}^N$ models.

  10. The mechanism of sound generation in the interaction between a shock wave and two counter-rotating vortices

    E-Print Network [OSTI]

    Zhang, Yong-Tao

    The mechanism of sound generation in the interaction between a shock wave and two counter the mechanism of sound generation in the interaction between a shock wave and two counter-rotating vortices to the shock interaction with two isolated vortices, in which the sound wave generated by the interaction

  11. Potential Vorticity Diagnosis of a Simulated Hurricane. Part II: Quasi-Balanced Contributions to Forced Secondary Circulations

    E-Print Network [OSTI]

    Zhang, Da-Lin

    equations system to a cloud-resolving simulation of Hurricane Andrew (1992) during its mature stagePotential Vorticity Diagnosis of a Simulated Hurricane. Part II: Quasi-Balanced Contributions with hurricane-like vortices have been previously examined, understanding is still limited to idealized

  12. Quantized hard-x-ray phase vortices nucleated by aberrated nanolenses

    SciTech Connect (OSTI)

    Pavlov, Konstantin M. [School of Science and Technology, University of New England, Armidale, New South Wales 2351 (Australia); School of Physics, Monash University, Victoria 3800 (Australia); Paganin, David M. [School of Physics, Monash University, Victoria 3800 (Australia); Vine, David J. [ARC Centre of Excellence for Coherent X-ray Science, School of Physics, The University of Melbourne, Parkville, Victoria 3010 (Australia); Schmalz, Jelena A. [School of Science and Technology, University of New England, Armidale, New South Wales 2351 (Australia); Suzuki, Yoshio; Uesugi, Kentaro; Takeuchi, Akihisa; Yagi, Naoto [SPring-8/JASRI (Japan Synchrotron Radiation Research Institute), Hyogo 679-5198 (Japan); Kharchenko, Alexander; Blaj, Gabriel [PANalytical B.V., P.O. Box 13, 7600 AA Almelo (Netherlands); Jakubek, Jan [Institute of Experimental and Applied Physics, Czech Technical University in Prague, 166 36 Prague 6 (Czech Republic); Altissimo, Matteo [Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, Victoria 3168 (Australia); Materials Science and Engineering, Commonwealth Scientific and Industrial Research Organisation, Clayton South, Victoria 3169 (Australia); Clark, Jesse N. [London Centre for Nanotechnology, University College, Gower St, London WC1E 6BT (United Kingdom)

    2011-01-15T23:59:59.000Z

    Quantized x-ray phase vortices, namely, screw-type topological defects in the wave fronts of a coherent monochromatic scalar x-ray wave field, may be spontaneously nucleated by x-ray lenses. Phase retrieval is used to reconstruct the phase and amplitude of the complex disturbance created by aberrated gold nanolenses illuminated with hard x rays. A nanoscale quantized x-ray vortex-antivortex dipole is observed, manifest both as a pair of opposite-helicity branch points in the Riemann sheets of the multivalued x-ray phase map of the complex x-ray field and in the vorticity of the associated Poynting vector field.

  13. Dispersion equation for water waves with vorticity and Stokes waves on flows with counter-currents

    E-Print Network [OSTI]

    Vladimir Kozlov; Nikolay Kuznetsov

    2014-06-05T23:59:59.000Z

    The two-dimensional free-boundary problem of steady periodic waves with vorticity is considered for water of finite depth. We investigate how flows with small-amplitude Stokes waves on the free surface bifurcate from a horizontal parallel shear flow in which counter-currents may be present. Two bifurcation mechanisms are described: for waves with fixed Bernoulli's constant and fixed wavelength. In both cases the corresponding dispersion equations serve for defining wavelengths from which Stokes waves bifurcate. Sufficient conditions guaranteeing the existence of roots of these equations are obtained. Two particular vorticity distributions are considered in order to illustrate general results.

  14. asthma start study: Topics by E-print Network

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

    early times, and to determine the effect of viscosity on flow quantities such as the core trajectory and vorticity, and the shed circulation. Vorticity contours, streaklines and...

  15. SOFT-GLUON DYNAMICS FOR HEAVY QUARK-ANTIQUARK SYSTEMS

    E-Print Network [OSTI]

    Shizuya, Ken-ichi

    2013-01-01T23:59:59.000Z

    gluons Ak, system, the binding energy bE and soft gluons inbe SOFT-GLUON DYNAMICS FOR HEAVY QUAR_K-ANTIQUARK SYSTEMS s·soft external perturbations (via gluons sof·ter than the system

  16. Soft Sensors for Process Monitoring of Complex Processes 

    E-Print Network [OSTI]

    Serpas, Mitchell Roy

    2012-10-19T23:59:59.000Z

    Soft sensors are an essential component of process systems engineering schemes. While soft sensor design research is important, investigation into the relationships between soft sensors and other areas of advanced monitoring and control is crucial...

  17. How soft repulsion enhances the depletion mechanism

    E-Print Network [OSTI]

    Lorenzo Rovigatti; Nicoletta Gnan; Alberto Parola; Emanuela Zaccarelli

    2014-11-12T23:59:59.000Z

    We investigate binary mixtures of large colloids interacting through soft potentials with small, ideal depletants. We show that softness has a dramatic effect on the resulting colloid-colloid effective potential when the depletant-to-colloid size ratio $q$ is small, with significant consequences on the colloidal phase behaviour. We also provide an exact relation that allows us to obtain the effective pair potential for {\\it any} type of colloid-depletant interactions in the case of ideal depletants, without having to rely on complicated and expensive full-mixture simulations. We also show that soft repulsion among depletants further enhances the tendency of colloids to aggregate. Our theoretical and numerical results demonstrate that --- in the limit of small $q$ --- soft mixtures cannot be mapped onto hard systems and hence soft depletion is not a mere extension of the widely used Asakura-Oosawa potential.

  18. Advanced Soft Switching Inverter for Reducing Switching and Power...

    Energy Savers [EERE]

    Soft Switching Inverter for Reducing Switching and Power Losses Advanced Soft Switching Inverter for Reducing Switching and Power Losses Presentation from the U.S. DOE Office of...

  19. Preparation and in situ Characterization of Surfaces Using Soft...

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

    in situ Characterization of Surfaces Using Soft-Landing in a Fourier Transform Ion Cyclotron Resonance Mass Preparation and in situ Characterization of Surfaces Using Soft-Landing...

  20. Physica D 191 (2004) 121136 Wave equation for sound in fluids with vorticity

    E-Print Network [OSTI]

    Visser, Matt

    Physica D 191 (2004) 121­136 Wave equation for sound in fluids with vorticity Santiago Esteban illustrate our formalism by applying it to waves propagating in a uniformly rotating fluid where the sound and on the local fluid density and speed of sound. The curved space-time interpretation of the wave equation

  1. Vorticity and Divergence of Surface Velocities Near Shore JEROME A. SMITH

    E-Print Network [OSTI]

    Smith, Jerome A.

    Vorticity and Divergence of Surface Velocities Near Shore JEROME A. SMITH Scripps Institution, and nearshore mixing-scale motions are generally undersampled (but see, e.g., Smith and Largier 1995; Johnson m 300 m on a side (Smith 2002a,b). Thus, these data focus more toward the small end of the range

  2. IEEE Visualization Contest 2011 Visualizing Unsteady Vortical Behavior of a Centrifugal Pump

    E-Print Network [OSTI]

    IEEE Visualization Contest 2011 Visualizing Unsteady Vortical Behavior of a Centrifugal Pump number 226042. em eg We present our results analyzing a centrifugal pump as a part of the IEEE Visualization Contest 2011. The given data set represents a high resolution simulation of a centrifugal pump

  3. Wavelet-Based Extraction of Coherent Vortices from High Reynolds Number Homogeneous

    E-Print Network [OSTI]

    École Normale Supérieure

    Wavelet-Based Extraction of Coherent Vortices from High Reynolds Number Homogeneous Isotropic rue Lhomond, 75231 Paris Cedex 05, France farge@lmd.ens.fr Abstract. A wavelet-based method to extract preserve statistics of nonlinear interactions of the total flow over the inertial range. Key words: wavelet

  4. Use of a Vertical Vorticity Equation in Variational Dual-Doppler Wind Analysis ALAN SHAPIRO

    E-Print Network [OSTI]

    Gao, Jidong

    is explored. The analysis winds are obtained by minimizing a cost function accounting for the discrepanciesUse of a Vertical Vorticity Equation in Variational Dual-Doppler Wind Analysis ALAN SHAPIRO School equation in a weak-constraint (least squares error) variational dual-Doppler wind analysis procedure

  5. BAROCLINIC VORTICITY PRODUCTION IN PROTOPLANETARY DISKS. II. VORTEX GROWTH AND LONGEVITY

    E-Print Network [OSTI]

    Julien, Keith

    BAROCLINIC VORTICITY PRODUCTION IN PROTOPLANETARY DISKS. II. VORTEX GROWTH AND LONGEVITY Mark R -- instabilities -- methods: numerical -- solar system: formation -- turbulence Online material: color figures 1 the surface. Thus, the potential energy of the tilted isopycnals is converted into the kinetic energy

  6. The Cellular Burning Regime in Type Ia Supernova Explosions - II. Flame Propagation into Vortical Fuel

    E-Print Network [OSTI]

    F. K. Roepke; W. Hillebrandt; J. C. Niemeyer

    2003-12-08T23:59:59.000Z

    We investigate the interaction of thermonuclear flames in Type Ia supernova explosions with vortical flows by means of numerical simulations. In our study, we focus on small scales, where the flame propagation is no longer dominated by the turbulent cascade originating from large-scale effects. Here, the flame propagation proceeds in the cellular burning regime, resulting from a balance between the Landau-Darrieus instability and its nonlinear stabilization. The interaction of a cellularly stabilized flame front with a vortical fuel flow is explored applying a variety of fuel densities and strengths of the velocity fluctuations. We find that the vortical flow can break up the cellular flame structure if it is sufficiently strong. In this case the flame structure adapts to the imprinted flow field. The transition from the cellularly stabilized front to the flame structure dominated by vortices of the flow proceeds in a smooth way. The implications of the results of our simulations for Type Ia Supernova explosion models are discussed.

  7. Stability and Interaction of Vortices in Two-Dimensional Viscous Flows

    E-Print Network [OSTI]

    Gallay, Thierry

    Stability and Interaction of Vortices in Two-Dimensional Viscous Flows Thierry Gallay Universit´e de Grenoble I Institut Fourier, UMR CNRS 5582 B.P. 74 F-38402 Saint-Martin-d'H`eres, France Thierry.Gallay

  8. Stability and Interaction of Vortices in TwoDimensional Viscous Flows

    E-Print Network [OSTI]

    Gallay, Thierry

    Stability and Interaction of Vortices in Two­Dimensional Viscous Flows Thierry Gallay Universitâ??e de Grenoble I Institut Fourier, UMR CNRS 5582 B.P. 74 F­38402 Saint­Martin­d'Hâ??eres, France Thierry.Gallay

  9. Eddy Amplitudes in Baroclinic Turbulence Driven by Nonzonal Mean Flow: Shear Dispersion of Potential Vorticity

    E-Print Network [OSTI]

    Smith, K. Shafer

    Sciences, New York University, New York, New York (Manuscript received 13 April 2006, in final form 17 July of potential vorticity (the source of eddy energy) in the zonal and meridional directions are fundamentally. The resulting flux is orders of magnitude higher than in the cross-jet direction, and thus eddy energies driven

  10. Waves and Vortices of Rust on the Surface of Corroding Steel K. Agladze and O. Steinbock*

    E-Print Network [OSTI]

    Steinbock, Oliver

    Waves and Vortices of Rust on the Surface of Corroding Steel K. Agladze and O. Steinbock; In Final Form: September 8, 2000 Two-dimensional wave patterns have been observed on corroding steel plates. A thin layer of oxygen-containing nitric acid covering the surface of the low-carbon steel induces

  11. Vortices in Bose-Einstein condensates confined in a multiply connected Laguerre-Gaussian optical trap

    E-Print Network [OSTI]

    Abraham, Eric

    Vortices in Bose-Einstein condensates confined in a multiply connected Laguerre-Gaussian optical-Einstein condensate, confined in a multiply connected geometry formed by a Laguerre-Gaussian optical trap. Solving expanding Laguerre-Gaussian condensate with a vortex is calculated and used to derive the interference

  12. NUMERICAL COMPUTATION OF QUANTIZED VORTICES IN THE BOSE-EINSTEIN CONDENSATE

    E-Print Network [OSTI]

    Du, Qiang

    . The theoretical analysis of many recent experimental work on a single component Bose-Einstein condensate has been of the gas are condensed in the same state for which the wave function minimizes the Gross-Pitaevskii energyNUMERICAL COMPUTATION OF QUANTIZED VORTICES IN THE BOSE-EINSTEIN CONDENSATE QIANG DU Abstract

  13. Polaron-like vortices, dissociation transition, and self-induced pinning in magnetic superconductors

    SciTech Connect (OSTI)

    Bulaevskii, L. N., E-mail: lnb@lanl.gov; Lin, S.-Z. [Los Alamos National Laboratory, Theoretical Division (United States)] [Los Alamos National Laboratory, Theoretical Division (United States)

    2013-09-15T23:59:59.000Z

    Vortices in magnetic superconductors polarize spins nonuniformly and repolarize them when moving. At a low spin relaxation rate and at low bias currents, vortices carrying magnetic polarization clouds become polaron-like and their velocities are determined by the effective drag coefficient that is significantly bigger than the Bardeen-Stephen (BS) one. As the current increases, vortices release polarization clouds and the velocity as well as the voltage in the I-V characteristics jump to values corresponding to the BS drag coefficient at a critical current J{sub c}. The nonuniform components of the magnetic field and magnetization drop as the velocity increases, resulting in weaker polarization and a discontinuous dynamic dissociation depinning transition. Experimentally, the jump shows up as a depinning transition and the corresponding current at the jump is the depinning current. As the current decreases, on the way back, vortices are retrapped by polarization clouds at the current J{sub r} < J{sub c}. As a result, the polaronic effect suppresses dissipation and enhances the critical current. Borocarbides (RE)Ni{sub 2}B{sub 2}C with a short penetration length and highly polarizable rare earth spins seem to be optimal systems for a detailed study of vortex polaron formation by measuring I-V characteristics. We also propose to use a superconductor-magnet multilayer structure to study polaronic mechanism of pinning with the goal to achieve high critical currents. The magnetic layers should have large magnetic susceptibility to enhance the coupling between vortices and magnetization in magnetic layers while the relaxation of the magnetization should be slow. For Nb and a proper magnet multilayer structure, we estimate the critical current density J{sub c} {approx} 10{sup 9} A/m{sup 2} at the magnetic field B Almost-Equal-To 1 T.

  14. Soft interactions in jet quenching

    E-Print Network [OSTI]

    Carlos Hidalgo-Duque; Felipe J. Llanes-Estrada

    2014-11-05T23:59:59.000Z

    We study the collisional aspects of jet quenching in a high energy nuclear collision, especially in the final state pion gas. The jet has a large energy, and acquires momentum transverse to its axis more effectively by multiple soft collisions than by few hard scatterings (as known from analogous systems such as J/\\psi production at Hera). Such regime of large E and small momentum transfer corresponds to Regge kinematics and is characteristically dominated by the pomeron. From this insight we estimate the jet quenching parameter in the hadron medium (largely a pion gas) at the end of the collision, which is naturally small and increases with temperature in line with the gas density. The physics in the quark-gluon plasma/liquid phase is less obvious, and here we revisit a couple of simple estimates that suggest indeed that the pomeron-mediated interactions are very relevant and should be included in analysis of the jet quenching parameter. Finally, the ocasional hard collisions produce features characteristic of a L\\`evy flight in the q_perp^2 plane perpendicular to the jet axis. We suggest one- and two-particle q_perp correlations as interesting experimental probes.

  15. Name: PeopleSoft#: University of Pittsburgh

    E-Print Network [OSTI]

    Sibille, Etienne

    Name: PeopleSoft#: 1 University of Pittsburgh HOUSING/FOOD SERVICES CONTRACT This Housing/Food Services Contract (this "Contract") is made by and between the University of Pittsburgh

  16. Content-adaptive lenticular prints

    E-Print Network [OSTI]

    Tompkin, James

    Lenticular prints are a popular medium for producing automultiscopic glasses-free 3D images. The light field emitted by such prints has a fixed spatial and angular resolution. We increase both perceived angular and spatial ...

  17. Idea Generation 3D printing

    E-Print Network [OSTI]

    Papadopouli, Maria

    2012 Idea Generation 3D printing at nanoscale Cruising on electrical roads Pushing back against Centre micro and nanoscale 15 Taking 3D printing to the nanoscale 18 Fighting cancer with a "lab

  18. Computer simulations of soft self-organising molecular materials

    E-Print Network [OSTI]

    Wilson, Mark R.

    biology. In each of these systems, the materials are classified as soft, that is, small changes in energyComputer simulations of soft self-organising molecular materials Mark R. Wilson Department to problems in soft matter chemistry. Simulation of soft matter has pro- gressed rapidly in the last decade

  19. A Real-Time Soft Shadow Volume Algorithm

    E-Print Network [OSTI]

    Assarsson, Ulf

    algorithm to generate the hard shadows (umbra). The second pass compensates to provide the softness (penum

  20. Organic vapor jet printing system

    DOE Patents [OSTI]

    Forrest, Stephen R

    2012-10-23T23:59:59.000Z

    An organic vapor jet printing system includes a pump for increasing the pressure of an organic flux.

  1. Part removal of 3D printed parts

    E-Print Network [OSTI]

    Peña Doll, Mateo

    2014-01-01T23:59:59.000Z

    An experimental study was performed to understand the correlation between printing parameters in the FDM 3D printing process, and the force required to remove a part from the build platform of a 3D printing using a patent ...

  2. Maxwell-Chern-Simons vortices in a CPT-odd Lorentz-violating Higgs Electrodynamics

    E-Print Network [OSTI]

    R. Casana; M. M. Ferreira Jr.; E. da Hora; A. B. F. Neves

    2014-04-18T23:59:59.000Z

    We have studied BPS vortices in a CPT-odd and Lorentz-violating Maxwell-Chern-Simons-Higgs (MCSH) electrodynamics attained from the dimensional reduction of the Carroll-Field-Jackiw-Higgs model. The Lorentz-violating parameter induces a pronounced behavior at origin (for the magnetic/electric fields and energy density) which is absent in the MCSH vortices. For some combination of the Lorentz-violating coefficients there always exist a sufficiently large winding number $n_{0}$ such that for all $% |n|\\geq |n_{0}|$ the magnetic field flips its signal, yielding two well defined regions with opposite magnetic flux. However, the total magnetic flux remains quantized and proportional to the winding number.

  3. 1/2-BPS Wilson Loops and Vortices in ABJM Model

    E-Print Network [OSTI]

    Lee, Ki-Myeong

    2010-01-01T23:59:59.000Z

    We explore the low-energy dynamics of 1/2-BPS heavy particles coupled to the ABJM model via the Higgsing of M2-branes, with focus on physical understanding of the recently discovered 1/2-BPS Wilson loop operators. The low-energy theory of 1/2-BPS heavy particles turns out to have the U(N|N) supergauge symmetry, which explains the novel structure of the 1/2-BPS Wilson loop operator as a holonomy of a U(N|N) superconnection. We show that the supersymmetric transformation of the Wilson loop operator can be identified as a fermionic supergauge transformation, which leads to their invariance under half of the supersymmetry. We also argue that 1/2-BPS Wilson loop operators appear as 1/2-BPS vortices with vorticity 1/k. Such a vortex can be naturally interpreted as a membrane wrapping the Z_k cycle once, or type IIA fundamental string.

  4. 1/2-BPS Wilson Loops and Vortices in ABJM Model

    E-Print Network [OSTI]

    Ki-Myeong Lee; Sungjay Lee

    2010-06-29T23:59:59.000Z

    We explore the low-energy dynamics of 1/2-BPS heavy particles coupled to the ABJM model via the Higgsing of M2-branes, with focus on physical understanding of the recently discovered 1/2-BPS Wilson loop operators. The low-energy theory of 1/2-BPS heavy particles turns out to have the U(N|N) supergauge symmetry, which explains the novel structure of the 1/2-BPS Wilson loop operator as a holonomy of a U(N|N) superconnection. We show that the supersymmetric transformation of the Wilson loop operator can be identified as a fermionic supergauge transformation, which leads to their invariance under half of the supersymmetry. We also argue that 1/2-BPS Wilson loop operators appear as 1/2-BPS vortices with vorticity 1/k. Such a vortex can be naturally interpreted as a membrane wrapping the Z_k cycle once, or type IIA fundamental string.

  5. Analytical Derivation of Three Dimensional Vorticity Function for wave breaking in Surf Zone

    E-Print Network [OSTI]

    Dutta, R

    2015-01-01T23:59:59.000Z

    In this report, Mathematical model for generalized nonlinear three dimensional wave breaking equations was de- veloped analytically using fully nonlinear extended Boussinesq equations to encompass rotational dynamics in wave breaking zone. The three dimensional equations for vorticity distributions are developed from Reynold based stress equations. Vorticity transport equations are also developed for wave breaking zone. This equations are basic model tools for numerical simulation of surf zone to explain wave breaking phenomena. The model reproduces most of the dynamics in the surf zone. Non linearity for wave height predictions is also shown close to the breaking both in shoaling as well as surf zone. Keyword Wave breaking, Boussinesq equation, shallow water, surf zone. PACS : 47.32-y

  6. Chiral vortical wave and induced flavor charge transport in a rotating quark-gluon plasma

    E-Print Network [OSTI]

    Jiang, Yin; Liao, Jinfeng

    2015-01-01T23:59:59.000Z

    We show the existence of a new gapless collective excitation in a rotating fluid system with chiral fermions, named as the Chiral Vortical Wave (CVW). The CVW has its microscopic origin at the quantum anomaly and macroscopically arises from interplay between vector and axial charge fluctuations induced by vortical effects. The wave equation is obtained both from hydrodynamic current equations and from chiral kinetic theory and its solutions show nontrivial CVW-induced charge transport from different initial conditions. Using the rotating quark-gluon plasma in heavy ion collisions as a concrete example, we show the formation of induced flavor quadrupole in QGP and estimate the elliptic flow splitting effect for Lambda baryons that may be experimentally measured.

  7. Validation of an in-flight flow visualization scheme to quantitatively measure vortical flow phenomena

    E-Print Network [OSTI]

    Dorsett, Kenneth Merle

    1993-01-01T23:59:59.000Z

    for a 750 Delta Wing. Figure Figure 6: Variation of Kp and K?with Aspect Ratio . . . . . 7: Effect of LEX Vortex Breakdown on Lift . . . . . . . . . . . 10 . . . 12 Figure Sa: Effect of LEX Vortex Breakdown on Lateral Stability . . . 12 Figure Sb... Resulting From Asymmetric Forebody Vortices. . Figure 12: HARV LEX Surface Pressure Discrepancies Between CFD, Wind Tunnel and Flight . . . . . Figure 13a: Wind Tunnel Apparatus; Top View . . . . Figure 13b: Wind Tunnel Apparatus; Side View...

  8. Computation of topological charges of optical vortices via nondegenerate four-wave mixing

    SciTech Connect (OSTI)

    Jiang Wei; Chen Qunfeng; Zhang Yongsheng; Guo, G.-C. [Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 (China)

    2006-10-15T23:59:59.000Z

    In this paper, we report an experiment, which demonstrates computation of topological charges of two optical vortices via a nondegenerate four-wave-mixing process. We show that the output signal photon carries orbital angular momentum which equals to the subtraction of the orbital angular momenta of the probe light photon and the backward pump light photon. The {sup 85}Rb atoms are used as the nonlinear medium, which transfers the orbital angular momenta of lights.

  9. Topological Landau-Ginzburg theory for vortices in superfluid [sup 4]He

    SciTech Connect (OSTI)

    Hatsuda, M. (Department of Physics, Kyoto University, Kyoto 606-01 (Japan) Physics Department, FM-15, University of Washington, Seattle, Washington 98195 (United States)); Yahikozawa, S. (Department of Physics, Kyoto University, Kyoto 606-01 (Japan)); Ao, P.; Thouless, D.J. (Physics Department, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1994-06-01T23:59:59.000Z

    We propose a modified Landau-Ginzburg theory for arbitrarily shaped vortex strings in superfluid [sup 4]He. The theory contains a topological term and directly describes vortex dynamics. We introduce gauge fields in order to remove singularities from the Landau-Ginzburg order parameter of the superfluid, so that two kinds of gauge symmetries appear, making the continuity equation and conservation of the total vorticity manifest. The topological term gives rise to the Berry phase term in the vortex mechanical actions.

  10. Intense pulsed light sintering of copper nanoink for printed electronics

    E-Print Network [OSTI]

    Kim, Hak-Sung; Dhage, Sanjay R.; Shim, Dong-Eun; Hahn, H. Thomas

    2009-01-01T23:59:59.000Z

    copper nanoink for printed electronics Hak-Sung Kim · Sanjay1 Introduction Printed electronics techniques such as inkjetcomponents of printed electronics are conducting lines and ?

  11. Pennsylvania Company Develops Solar Cell Printing Technology

    Broader source: Energy.gov [DOE]

    The technology uses Plextronics’ conductive inks that can be printed by manufacturers worldwide to make solar cells, potentially as easily as they might print a newspaper.

  12. Structural Integration of Silicon Solar Cells and Lithium-ion Batteries Using Printed Electronics

    E-Print Network [OSTI]

    Kang, Jin Sung

    2012-01-01T23:59:59.000Z

    4 Inkjet Printed Electronics Using Copper Nanoparticle29 Inkjet Printed Electronics For Multifunctional Compositenanocrystals toward printed electronics,” Nanotechnology,

  13. IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 51, NO. 12, DECEMBER 2005 4363 Soft-In Soft-Out Decoding of ReedSolomon Codes Based

    E-Print Network [OSTI]

    Grant, Alex

    decoded systems. Index Terms--Graphical models, Reed­Solomon (RS) codes, soft-in soft-out (SISO) decodingIEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 51, NO. 12, DECEMBER 2005 4363 Soft-In Soft, Member, IEEE Abstract--This correspondence presents an optimal soft-in soft-out (SISO) decoding algorithm

  14. The Double Copy Structure of Soft Gravitons

    E-Print Network [OSTI]

    Agustin Sabio Vera; Miguel A. Vazquez-Mozo

    2014-12-11T23:59:59.000Z

    The subleading corrections to factorization theorems for soft bremsstrahlung in nonabelian gauge theories and gravity are investigated. Building on recent results, we write the action of the angular momentum operators on scattering amplitudes as derivatives with respect to the Mandelstam invariants to uncover a double copy structure in the contribution of the soft graviton to the amplitude, both in the leading term and the first correction. Using our approach, we study Gribov's theorem as extended to nonabelian gauge theories and gravity by Lipatov, and find that subleading corrections can be obtained from those to Low's theorem by dropping the terms with derivatives with respect to the center-of-mass energy, which are suppressed at high energies. In this case, the emitted gravitons are not necessarily soft.

  15. Soft-commutated direct current motor

    DOE Patents [OSTI]

    Hsu, J.S.

    1999-07-27T23:59:59.000Z

    A method and circuit is disclosed for soft-commutation of a direct current (DC) motor. An attenuation circuit is connected through auxiliary brushes A, A[prime], B and B[prime] to the commutator (16) to drain circuit from successive armature coils (15) before the main brushes (27, 28) disconnects from each of the coils (15). This prevents the spark generation that normally occurs in conventional DC motors. The attenuation circuit may also be connected before energization of the coil (15) for a soft turning on operation. 13 figs.

  16. Stability of Two-Dimensional Soft Quasicrystals

    E-Print Network [OSTI]

    Kai Jiang; Jiajun Tong; Pingwen Zhang; An-Chang Shi

    2015-05-26T23:59:59.000Z

    The relative stability of two-dimensional soft quasicrystals is examined using a recently developed projection method which provides a unified numerical framework to compute the free energy of periodic crystal and quasicrystals. Accurate free energies of numerous ordered phases, including dodecagonal, decagonal and octagonal quasicrystals, are obtained for a simple model, i.e. the Lifshitz-Petrich free energy functional, of soft quasicrystals with two length-scales. The availability of the free energy allows us to construct phase diagrams of the system, demonstrating that, for the Lifshitz-Petrich model, the dodecagonal and decagonal quasicrystals can become stable phases, whereas the octagonal quasicrystal stays as a metastable phase.

  17. E-print Network: Research Communications for Scientists and Engineers

    Office of Scientific and Technical Information (OSTI)

    E-print Web Log E-print Network E-print Network About Search Browse by Discipline Find Scientific Societies Receive E-print Alerts Contact Us Help Home Site Map OSTI DOE For...

  18. Soft Biometrics Database: A Benchmark For Keystroke Dynamics Biometric Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Soft Biometrics Database: A Benchmark For Keystroke Dynamics Biometric Systems Syed Zulkarnain Syed authentication resulting in a more se- cure verification system. Soft biometrics allows a refinement the existing biometric modalities, authentication systems based on keystroke dynamics are particularly

  19. Non-Hardware ("Soft") Cost-Reduction Roadmap for

    E-Print Network [OSTI]

    Non-Hardware ("Soft") Cost- Reduction Roadmap for Residential and Small Commercial Solar Golden, CO 80401 303-275-3000 · www.nrel.gov Non-Hardware ("Soft") Cost- Reduction Roadmap

  20. Breakout Session: The New Science of Soft Costs: Tutorials in...

    Energy Savers [EERE]

    New Science of Soft Costs: Tutorials in Big Data, Social Physics, and Randomized Pilots Breakout Session: The New Science of Soft Costs: Tutorials in Big Data, Social Physics, and...

  1. Soft materials for linear electromechanical energy conversion

    E-Print Network [OSTI]

    Antal Jakli; Nandor Eber

    2014-07-29T23:59:59.000Z

    We briefly review the literature of linear electromechanical effects of soft materials, especially in synthetic and biological polymers and liquid crystals (LCs). First we describe results on direct and converse piezoelectricity, and then we discuss a linear coupling between bending and electric polarization, which maybe called bending piezoelectricity, or flexoelectricity.

  2. PeopleSoft HR ECR Automation Process

    E-Print Network [OSTI]

    Huang, Jianyu

    PeopleSoft HR ECR Automation Process Short Term Disability with Pay May 2011 #12;Processing a Short Term Disability with Pay ECR Search Page To process a Short Term Disability using the automated ECR. 2. Enter the Effective Date of the Short Term Disability. This is the Effective Date

  3. Second Virtual CiSoft Academy; A success! The 2011 CiSoft Academy was

    E-Print Network [OSTI]

    Shahabi, Cyrus

    with the opportunity to gain invaluable insight on Smart Oilfield Technologies (SOFT) for the digital oilfield more [Smart Oilfield Technology] information to Chevron's talent. It is certainly one of the most

  4. 3D Printing Prof. Hank Dietz

    E-Print Network [OSTI]

    Dietz, Henry G. "Hank"

    3D Printing Prof. Hank Dietz TCMS, March 14, 2014 University of Kentucky Electrical & Computer #12;3D With Glue Layers of paper: printed with glue & cut Layers of powder: printed with glue Can also be printed in full color #12;3D Extrusion (RepRaps) FDM: Fused Deposition Modeling FFF: Fused

  5. Design and analysis of a soft prismatic joint by Amelia Tepper Servi.

    E-Print Network [OSTI]

    Servi, Amelia Tepper

    2010-01-01T23:59:59.000Z

    This thesis documents the design and analysis of a soft prismatic joint for use in soft robotics. While this joint can be utilized in any soft robot, its immediate application is for Squishbot, a soft robot developed for ...

  6. This document is produced by the University Print Management Team

    E-Print Network [OSTI]

    Li, Yi

    University Print Management Team. A Guide To Best Practice Printing #12;This document is produced by the University Print Management Team (UPMT) to raise awareness of printing on campus, and to demonstrate how we managing the print process to reduce cost, waste and to improve the functionality and availability of print

  7. Hyperbolicity in multidimensional Hamiltonian with applications to soft billiards

    E-Print Network [OSTI]

    Bálint, Péter

    Hyperbolicity in multi­dimensional Hamiltonian systems with applications to soft billiards P. B systems. On the one hand, our motivation comes from multi­dimensional soft billiard systems, a situation to be applicable to a variety of situations. As an application we investigate soft billiards, that is, replace

  8. High Performance Dense Linear System Solver with Soft Error Resilience

    E-Print Network [OSTI]

    Dongarra, Jack

    High Performance Dense Linear System Solver with Soft Error Resilience Peng Du, Piotr Luszczek systems, and in some scientific applications C/R is not applicable for soft error at all due to error) high performance dense linear system solver with soft error resilience. By adopting a mathematical

  9. Benchmarking Non-Hardware Balance of System (Soft) Costs for

    E-Print Network [OSTI]

    Benchmarking Non-Hardware Balance of System (Soft) Costs for U.S. Photovoltaic Systems Using a Data (Soft) Costs for U.S. Photovoltaic Systems Using a Data-Driven Analysis from PV Installer Survey Results process" or "soft" costs--for residential and commercial photovoltaic (PV) systems. Annual expenditure

  10. PeopleSoft (ERP) Finance Access Request Form User Guide

    E-Print Network [OSTI]

    de Lijser, Peter

    PeopleSoft (ERP) Finance Access Request Form User Guide Last Revised: 3/22/11 #12;PeopleSoft ERP Finance Access Request Form User Guide FINAL Last Revised: 3/22/11 Page ii REVISION CONTROL Document Title: PeopleSoft ERP Finance Access Request Form User Guide Author: IT Training & Support File Reference

  11. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 57, NO. 6, DECEMBER 2010 3553 Soft Error and Soft Delay Mitigation Using

    E-Print Network [OSTI]

    Sayil, Selahattin

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 57, NO. 6, DECEMBER 2010 3553 Soft Error and Soft Delay of a circuit increases. The increasing use of portable devices and higher demand on battery life has made power

  12. Hole pairing from attraction of opposite chirality spin vortices: Non-BCS superconductivity in Underdoped Cuprates

    E-Print Network [OSTI]

    P. A. Marchetti; F. Ye; Z. B. Su; L. Yu

    2011-05-25T23:59:59.000Z

    Within a gauge approach to the t-J model, we propose a new, non-BCS mechanism of superconductivity for underdoped cuprates. We implement the no-double occupancy constraint with a (semionic) slave-particle formalism. The dopant generates a vortex-like quantum distortion of the AF background centered on the empty sites, with opposite chirality for cores on the two N\\'eel sublattices. Empty sites are described in terms of spinless fermionic holons and the long-range attraction between spin vortices on two opposite N\\'eel sublattices is the holon pairing force, leading eventually to SC. The spin fluctuations are described by bosonic spinons with a gap generated by scattering on spin vortices. Due to the occupation constraint, there is a gauge attraction between holon and spinon, binding them into a physical hole. Through gauge interaction the spin vortex attraction induces the formation of spin-singlet RVB pairs reducing the spinon gap. Lowering T, there are two crossovers as precursors of the SC transition: at the higher one a gas of holon pairs appears, reducing the hole spectral weight, while at the lower one a gas of spinon pairs also appears, giving rise to a gas of incoherent preformed hole pairs with magnetic vortices in the plasma phase, supporting a Nernst signal. At an even lower T the hole pairs become coherent and SC appears beyond a critical doping. The proposed SC mechanism is not of the BCS-type, because it involves a gain in kinetic energy (lowering of spinon gap) and it is "almost" of the classical 3D XY-type. Since both the spinon gap and the holon pairing originate from the same term in the slave-particle representation of the t-J model, this approach incorporates a strong interplay between AF and SC, giving rise to a universal relation between Tc and the energy of the resonance mode, as observed in neutron scattering experiments.

  13. alteration print gap: Topics by E-print Network

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

    Elihu, David Morad 2006-01-01 2 Bridging the Gap: Automated Steady Scaffoldings for 3D Printing Jrmie Dumas Computer Technologies and Information Sciences Websites Summary:...

  14. Biomaterials 24 (2003) 25332540 Fabrication of PLGA scaffolds using soft lithography and

    E-Print Network [OSTI]

    Bhatia, Sangeeta

    2003-01-01T23:59:59.000Z

    -aided design and solid free form fabrication, both 3D-printing and lost mold methods have been developed. 3D-Printing

  15. Running Amok in Labyrinthine Systems: The Cyber-Behaviorist Origins of Soft Torture

    E-Print Network [OSTI]

    Lemov, Rebecca

    2011-01-01T23:59:59.000Z

    Labyrinthine Systems: The Cyber-Behaviorist Origins of SoftLabyrinthine Systems: The Cyber-Behaviorist Origins of Soft

  16. Universal Velocity Profile for Coherent Vortices in Two-Dimensional Turbulence

    E-Print Network [OSTI]

    M. Chertkov; I. Kolokolov; V. Lebedev

    2009-12-29T23:59:59.000Z

    Two-dimensional turbulence generated in a finite box produces large-scale coherent vortices coexisting with small-scale fluctuations. We present a rigorous theory explaining the $\\eta=1/4$ scaling in the $V\\propto r^{-\\eta}$ law of the velocity spatial profile within a vortex, where $r$ is the distance from the vortex center. This scaling, consistent with earlier numerical and laboratory measurements, is universal in its independence of details of the small-scale injection of turbulent fluctuations and details of the shape of the box.

  17. Fusion rules and vortices in $p_x+ip_y$ superconductors

    E-Print Network [OSTI]

    Michael Stone; Suk Bum Chung

    2005-11-30T23:59:59.000Z

    The "half-quantum" vortices ($\\sigma$) and quasiparticles ($\\psi$) in a two-dimensional $p_x+ip_y$ superconductor obey the Ising-like fusion rules $\\psi\\times \\psi=1$, $\\sigma\\times \\psi=\\sigma$, and $\\sigma\\times \\sigma= 1+\\psi$. We explain how the physical fusion of vortex-antivortex pairs allows us to use these rules to read out the information encoded in the topologically protected space of degenerate ground states. We comment on the potential applicability of this fact to quantum computation. Modified 11/30/05 to reflect manuscript as accepted for publication. Includes corrected last section.

  18. An Improved Technique for Reducing False Alarms Due to Soft Errors A significant fraction of soft errors in modern

    E-Print Network [OSTI]

    Polian, Ilia

    of soft errors in modern microprocessors has been reported to never lead to a system failure. Any techniques are enhanced by a methodology to handle soft errors on address bits. Furthermore, we demonstrate]. Consequently, many state-of-the art systems provide soft error detection and correction capabilities [Hass 89

  19. Behavior of vortices near twin boundaries in underdoped Ba(Fe 1 ? x Co x ) 2 As 2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kalisky, B.; Kirtley, J. R.; Analytis, J. G.; Chu, J.-H.; Fisher, I. R.; Moler, K. A.

    2011-02-01T23:59:59.000Z

    We use scanning superconducting quantum interference device (SQUID) microscopy to investigate the behavior of vortices in the presence of twin boundaries in the pnictide superconductor Ba(Fe1-xCox)?As?. We show that the vortices avoid pinning on twin boundaries. Individual vortices move in a preferential way when manipulated with the SQUID: They tend to not cross a twin boundary, but rather to move parallel to it. This behavior can be explained by the observation of enhanced superfluid density on twin boundaries in Ba(Fe1-xCox)?As?. The observed repulsion from twin boundaries may be a mechanism for enhanced critical currents observed in twinned samples in pnictides and other superconductors.

  20. Vorticity generation in creeping flow past a magnetic obstacle Centro de Investigacin en Energa, UNAM, Apartado Postal 34, Temixco, Morelos 62580, Mexico

    E-Print Network [OSTI]

    Abdou, Mohamed

    Vorticity generation in creeping flow past a magnetic obstacle S. Cuevas* Centro de Investigación Mechanical & Aerospace Engineering Department, UCLA, 44-114 Engineering IV, Los Angeles, California 90095 The generation of vorticity in the two-dimensional creeping flow of an incompressible, electrically conduct- ing

  1. Dynamics of Three Non-co-rotating Vortices in Bose-Einstein Condensates

    E-Print Network [OSTI]

    Vassilis Koukouloyannis; George Voyatzis; Panayotis G. Kevrekidis

    2014-04-27T23:59:59.000Z

    In this work we use standard Hamiltonian-system techniques in order to study the dynamics of three vortices with alternating charges in a confined Bose-Einstein condensate. In addition to being motivated by recent experiments, this system offers a natural vehicle for the exploration of the transition of the vortex dynamics from ordered to progressively chaotic behavior. In particular, it possesses two integrals of motion, the {\\it energy} (which is expressed through the Hamiltonian $H$) and the {\\it angular momentum} $L$ of the system. By using the integral of the angular momentum, we reduce the system to a two degree-of-freedom one with $L$ as a parameter and reveal the topology of the phase space through the method of Poincar\\'e surfaces of section. We categorize the various motions that appear in the different regions of the sections and we study the major bifurcations that occur to the families of periodic motions of the system. Finally, we correspond the orbits on the surfaces of section to the real space motion of the vortices in the plane.

  2. INTERNSHIP AGREEMENT (Please Print)

    E-Print Network [OSTI]

    Bogaerts, Steven

    Rev. 5/12 INTERNSHIP AGREEMENT (Please Print) STUDENT MUST HAVE A GPA OF 2.0+ AND A MINIMUM OF 64 COMPLETED CREDIT HOURS TO REGISTER FOR AN INTERNSHIP. ALL INTERNSHIPS DONE FOR CREDIT ARE PASS/FAIL. A MAXIMUM OF 10 SEMESTER HOURS OF INTERNSHIP CREDIT IS POSSIBLE. THROUGH A COMBINATION OF INTERNSHIPS

  3. Scanning Hall Probe Microscopy of Magnetic Vortices inVery Underdoped yttrium-barium-copper-oxide

    SciTech Connect (OSTI)

    Guikema, Janice Wynn; /SLAC, SSRL

    2005-12-02T23:59:59.000Z

    Since their discovery by Bednorz and Mueller (1986), high-temperature cuprate superconductors have been the subject of intense experimental research and theoretical work. Despite this large-scale effort, agreement on the mechanism of high-T{sub c} has not been reached. Many theories make their strongest predictions for underdoped superconductors with very low superfluid density n{sub s}/m*. For this dissertation I implemented a scanning Hall probe microscope and used it to study magnetic vortices in newly available single crystals of very underdoped YBa{sub 2}Cu{sub 3}O{sub 6+x} (Liang et al. 1998, 2002). These studies have disproved a promising theory of spin-charge separation, measured the apparent vortex size (an upper bound on the penetration depth {lambda}{sub ab}), and revealed an intriguing phenomenon of ''split'' vortices. Scanning Hall probe microscopy is a non-invasive and direct method for magnetic field imaging. It is one of the few techniques capable of submicron spatial resolution coupled with sub-{Phi}{sub 0} (flux quantum) sensitivity, and it operates over a wide temperature range. Chapter 2 introduces the variable temperature scanning microscope and discusses the scanning Hall probe set-up and scanner characterizations. Chapter 3 details my fabrication of submicron GaAs/AlGaAs Hall probes and discusses noise studies for a range of probe sizes, which suggest that sub-100 nm probes could be made without compromising flux sensitivity. The subsequent chapters detail scanning Hall probe (and SQUID) microscopy studies of very underdoped YBa{sub 2}Cu{sub 3}O{sub 6+x} crystals with T{sub c} {le} 15 K. Chapter 4 describes two experimental tests for visons, essential excitations of a spin-charge separation theory proposed by Senthil and Fisher (2000, 2001b). We searched for predicted hc/e vortices (Wynn et al. 2001) and a vortex memory effect (Bonn et al. 2001) with null results, placing upper bounds on the vison energy inconsistent with the theory. Chapter 5 discusses imaging of isolated vortices as a function of T{sub c}. Vortex images were fit with theoretical magnetic field profiles in order to extract the apparent vortex size. The data for the lowest T{sub c}'s (5 and 6.5 K) show some inhomogeneity and suggest that {lambda}{sub ab} might be larger than predicted by the T{sub c} {proportional_to} n{sub s}(0)/m* relation first suggested by results of Uemura et al. (1989) for underdoped cuprates. Finally, Chapter 6 examines observations of apparent ''partial vortices'' in the crystals. My studies of these features indicate that they are likely split pancake vortex stacks. Qualitatively, these split stacks reveal information about pinning and anisotropy in the samples. Collectively these magnetic imaging studies deepen our knowledge of cuprate superconductivity, especially in the important regime of low superfluid density.

  4. Soft wall model for a holographic superconductor

    E-Print Network [OSTI]

    Afonin, S S

    2015-01-01T23:59:59.000Z

    We apply the soft wall holographic model from hadron physics to a description of the high-$T_c$ superconductivity. In comparison with the existing bottom-up holographic superconductors, the proposed approach is more phenomenological. On the other hand, it is much simpler and has more freedom for fitting the conductivity properties of the real high-$T_c$ materials. We demonstrate some examples of emerging models and discuss a possible origin of the approach.

  5. Molecular orientation in soft matter thin films studied by resonant soft X-ray reflectivity

    SciTech Connect (OSTI)

    Mezger, Markus; Jerome, Blandine; Kortright, Jeffrey B.; Valvidares, Manuel; Gullikson, Eric; Giglia, Angelo; Mahne, Nicola; Nannarone, Stefano

    2011-01-12T23:59:59.000Z

    We present a technique to study depth profiles of molecular orientation in soft matter thin films with nanometer resolution. The method is based on dichroism in resonant soft X-ray reflectivity using linear s- and p-polarization. It combines the chemical sensitivity of Near-Edge X-ray Absorption Fine Structure spectroscopy to specific molecular bonds and their orientation relative to the polarization of the incident beam with the precise depth profiling capability of X-ray reflectivity. We demonstrate these capabilities on side chain liquid crystalline polymer thin films with soft X-ray reflectivity data at the carbon K edge. Optical constants of the anisotropic refractive index ellipsoid were obtained from a quantitative analysis using the Berreman formalism. For films up to 50 nm thickness we find that the degree of orientation of the long axis exhibits no depth variation and isindependent of the film thickness.

  6. Interaction of an oblique shock wave with a pair of parallel vortices: Shock dynamics and mechanism of sound generation

    E-Print Network [OSTI]

    Zhang, Yong-Tao

    and the mechanism of sound generation in the interaction between an oblique shock wave and a pair of vortices. We is related to the interaction of the reflected shock waves and sound waves. The first mechanism is dominating affected by the interaction of the reflected shock waves and sound waves. © 2006 American Institute

  7. DNS of helical vortices Ivan Delbende(1,2), Maurice Rossi(1,3), Benjamin Piton(1,2)

    E-Print Network [OSTI]

    Delbende, Ivan

    , France Email : Maurice.Rossi@upmc.fr 1 Introduction Rotating devices such as propellers, wind turbines, helicopter rotors are known to develop a system of helical vortices in their wake. These structures re- sult- tices follows the expansion (resp. the contraction) of the fluid tube passing through the turbine (resp

  8. Phase diagram of vortices in double-layer quantum Hall systems Igor Tupitsyn,* Mats Wallin, and Anders Rosengren

    E-Print Network [OSTI]

    Wallin, Mats

    , Sweden Received 23 August 1994; revised manuscript received 22 May 1995 We consider the finite on recent progress in understanding the nature of charged col- lective excitations in single layer systems-dimensional 2D Coulomb gas for vortices without extra electric charge , which has been determined from

  9. Erratum: ``The Hamiltonian structure of a two-dimensional rigid circular cylinder interacting dynamically with N point vortices''

    E-Print Network [OSTI]

    Shashikanth, Banavara N.

    ERRATA Erratum: ``The Hamiltonian structure of a two-dimensional rigid circular cylinder interacting dynamically with N point vortices'' Phys. Fluids 14, 1214 ,,2002... Banavara N. Shashikantha Mexico 88003 Jerrold E. Marsdenb) Control and Dynamical Systems, 107-81, California Institute

  10. Printed Optics: 3D Printing of Embedded Optical Elements for Interactive Devices

    E-Print Network [OSTI]

    Poupyrev, Ivan

    Printed Optics: 3D Printing of Embedded Optical Elements for Interactive Devices Karl D.D. Willis1 d Figure 1: Custom optical elements are fabricated with 3D printing and embedded in interactive), and embedded optoelectronics (d). ABSTRACT We present an approach to 3D printing custom optical ele- ments

  11. Non-radial instabilities of isothermal Bondi accretion with a shock: vortical-acoustic cycle vs post-shock acceleration

    E-Print Network [OSTI]

    T. Foglizzo

    2002-06-17T23:59:59.000Z

    The linear stability of isothermal Bondi accretion with a shock is studied analytically in the asymptotic limit of high incident Mach number M_1. The flow is unstable with respect to radial perturbations as expected by Nakayama (1993), due to post-shock acceleration. Its growth time scales like the advection time from the shock r_sh to the sonic point r_son. The growth rate of non-radial perturbations l=1 is higher by a factor M_1^{2/3}, and is therefore intermediate between the advection and acoustic frequencies. Besides these instabilities based on post-shock acceleration, our study revealed another generic mechanism based on the cycle of acoustic and vortical perturbations between the shock and the sonic radius, independently of the sign of post-shock acceleration. The vortical-acoustic instability is fundamentally non-radial. It is fed by the efficient excitation of vorticity waves by the isothermal shock perturbed by acoustic waves. The growth rate exceeds the advection rate by a factor log M_1. Unstable modes cover a wide range of frequencies from the fundamental acoustic frequency ~c/r_sh up to a cut-off ~c/r_son associated with the sonic radius. The highest growth rate is reached for l=1 modes near the cut-off. The additional cycle of acoustic waves between the shock and the sonic radius is responsible for variations of the growth rate by a factor up to 3 depending on its phase relative to the vortical-acoustic cycle. The instability also exists, with a similar growth rate, below the fundamental acoustic frequency down to the advection frequency, as vorticity waves are efficiently coupled to the region of pseudosound. These results open new perspectives to address the stability of shocked accretion flows.

  12. Electron acoustic wave driven vortices with non-Maxwellian hot electrons in magnetoplasmas

    SciTech Connect (OSTI)

    Haque, Q. [Theoretical Physics Division, PINSTECH, P. O. Nilore, Islamabad (Pakistan); National Center for Physics Shahdrah Valley Road, Islamabad 44000 (Pakistan); Mirza, Arshad M. [Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320 (Pakistan); Zakir, U. [Institute of Physics and Electronics, University of Peshawar, and Khyber Pakhtun Khwa 25000 (Pakistan); Department of Physics, University of Malakand Chakdara Dir(L), Khyber Pakhtun Khwa 18800 Pakistan (Pakistan)

    2014-07-15T23:59:59.000Z

    Linear dispersion characteristics of the Electron Acoustic Wave (EAW) and the corresponding vortex structures are investigated in a magnetoplasma in the presence of non-Maxwellian hot electrons. In this regard, kappa and Cairns distributed hot electrons are considered. It is noticed that the nonthermal distributions affect the phase velocity of the EAW. Further, it is found that the phase velocity of EAW increases for Cairns and decreases for kappa distributed hot electrons. Nonlinear solutions in the form of dipolar vortices are also obtained for both stationary and non-stationary ions in the presence of kappa distributed hot electrons and dynamic cold electrons. It is found that the amplitude of the nonlinear vortex structures also reduces with kappa factor like the electron acoustic solitons.

  13. Controlling the transverse instability of dark solitons and nucleation of vortices by a potential barrier

    SciTech Connect (OSTI)

    Ma Manjun [College of Science, China Jiliang University, Hangzhou, Zhejiang, 310018 (China); Carretero-Gonzalez, R. [Nonlinear Physics Group, Departamento de Fisica Aplicada I, Universidad de Sevilla, Avda. Reina Mercedes s/n., E-41012 Sevilla (Spain); Kevrekidis, P. G. [Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515 (United States); Frantzeskakis, D. J. [Department of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784 (Greece); Malomed, B. A. [Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv IL-69978 (Israel)

    2010-08-15T23:59:59.000Z

    We study possibilities to suppress the transverse modulational instability (MI) of dark-soliton stripes in two-dimensional Bose-Einstein condensates (BEC's) and self-defocusing bulk optical waveguides by means of quasi-one-dimensional structures. Adding an external repulsive barrier potential (which can be induced in BEC by a laser sheet, or by an embedded plate in optics), we demonstrate that it is possible to reduce the MI wave number band, and even render the dark-soliton stripe completely stable. Using this method, we demonstrate the control of the number of vortex pairs nucleated by each spatial period of the modulational perturbation. By means of the perturbation theory, we predict the number of the nucleated vortices per unit length. The analytical results are corroborated by the numerical computation of eigenmodes of small perturbations, as well as by direct simulations of the underlying Gross-Pitaevskii/nonlinear Schroedinger equation.

  14. Quiver Gauge Theory of Nonabelian Vortices and Noncommutative Instantons in Higher Dimensions

    E-Print Network [OSTI]

    Alexander D. Popov; Richard J. Szabo

    2006-02-16T23:59:59.000Z

    We construct explicit BPS and non-BPS solutions of the Yang-Mills equations on the noncommutative space R^{2n}_\\theta x S^2 which have manifest spherical symmetry. Using SU(2)-equivariant dimensional reduction techniques, we show that the solutions imply an equivalence between instantons on R^{2n}_\\theta x S^2 and nonabelian vortices on R^{2n}_\\theta, which can be interpreted as a blowing-up of a chain of D0-branes on R^{2n}_\\theta into a chain of spherical D2-branes on R^{2n} x S^2. The low-energy dynamics of these configurations is described by a quiver gauge theory which can be formulated in terms of new geometrical objects generalizing superconnections. This formalism enables the explicit assignment of D0-brane charges in equivariant K-theory to the instanton solutions.

  15. Gravitational radiation, vorticity and the electric and magnetic part of Weyl tensor

    E-Print Network [OSTI]

    L. Herrera; N. O. Santos; J. Carot

    2006-05-15T23:59:59.000Z

    The electric and the magnetic part of the Weyl tensor, as well as the invariants obtained from them, are calculated for the Bondi vacuum metric. One of the invariants vanishes identically and the other only exhibits contributions from terms of the Weyl tensor containing the static part of the field. It is shown that the necessary and sufficient condition for the spacetime to be purely electric is that such spacetime be static. It is also shown that the vanishing of the electric part implies Minkowski spacetime. Unlike the electric part, the magnetic part does not contain contributions from the static field. Finally a speculation about the link between the vorticity of world lines of observers at rest in a Bondi frame, and gravitational radiation, is presented.

  16. Soft Pion Emission in Hard Exclusive Pion Production

    E-Print Network [OSTI]

    Maxim V. Polyakov; Simone Stratmann

    2006-09-05T23:59:59.000Z

    We investigate hard exclusive reactions on the nucleon with soft pion emission. A parametrization of corresponding hadronic matrix elements in terms of parton distributions for final pion-nucleon state is provided. These distributions are calculated in terms of nucleon and pion GPDs and the pion distribution amplitude via soft-pion theorems. Some observables for the process of hard charged pion production on the proton with soft pion emission are computed.

  17. Soft Capacitors for Wave Energy Harvesting

    E-Print Network [OSTI]

    Karsten Ahnert; Markus Abel; Matthias Kollosche; Per Jørgen Jørgensen; Guggi Kofod

    2011-10-14T23:59:59.000Z

    Wave energy harvesting could be a substantial renewable energy source without impact on the global climate and ecology, yet practical attempts have struggle d with problems of wear and catastrophic failure. An innovative technology for ocean wave energy harvesting was recently proposed, based on the use of soft capacitors. This study presents a realistic theoretical and numerical model for the quantitative characterization of this harvesting method. Parameter regio ns with optimal behavior are found, and novel material descriptors are determined which simplify analysis dramatically. The characteristics of currently ava ilable material are evaluated, and found to merit a very conservative estimate of 10 years for raw material cost recovery.

  18. 3Soft Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki Home Jweers's APTAP Energy GmbH JumpSoft Inc

  19. OptiSoft Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorthOlympia GreenThe community Energy ToolsOpenXCOptiSoft

  20. Water-Like Properties of Soft Nanoparticle Suspensions | Advanced...

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

    | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Water-Like Properties of Soft Nanoparticle Suspensions November 25, 2013 Bookmark and Share...

  1. Processing a printed wiring board by single bath electrodeposition

    DOE Patents [OSTI]

    Meltzer, Michael P. (Oakland, CA); Steffani, Christopher P. (Livermore, CA); Gonfiotti, Ray A. (Livermore, CA)

    2010-12-07T23:59:59.000Z

    A method of processing a printed wiring board. Initial processing steps are implemented on the printed wiring board. Copper is plated on the printed wiring board from a bath containing nickel and copper. Nickel is plated on the printed wiring board from a bath containing nickel and copper and final processing steps are implemented on the printed wiring board.

  2. Processing A Printed Wiring Board By Single Bath Electrodeposition

    DOE Patents [OSTI]

    Meltzer, Michael P. (Oakland, CA); Steffani, Christopher P. (Livermore, CA); Gonfiotti, Ray A. (Livermore, CA)

    2003-04-15T23:59:59.000Z

    A method of processing a printed wiring board by single bath electrodeposition. Initial processing steps are implemented on the printed wiring board. Copper is plated on the printed wiring board from a bath containing nickel and copper. Nickel is plated on the printed wiring board from the bath containing nickel and copper and final processing steps are implemented on the printed wiring board.

  3. AN IMPROVED SOFT FEEDBACK V-BLAST DETECTION TECHNIQUE FOR TURBO-MIMO SYSTEMS

    E-Print Network [OSTI]

    Singer, Andrew C

    AN IMPROVED SOFT FEEDBACK V-BLAST DETECTION TECHNIQUE FOR TURBO-MIMO SYSTEMS Jun Won Choi*, Andrew-demapper) and the channel decoder exchange soft (extrinsic) information to iteratively improve system perfor- mance. Hence In this paper, an improved minimum mean square error (MMSE) soft feedback detector, called the soft input, soft

  4. The Makerbot: Desktop 3D printing

    E-Print Network [OSTI]

    Roughan, Matthew

    The Makerbot: Desktop 3D printing Matthew Roughan School of Mathematical Sciences matthew is Lots of maths hidden in something like 3D printing Geometry and Linear algebra ++ Same math used

  5. MPRINT: VAX printing made simple

    SciTech Connect (OSTI)

    Worlton, T.

    1994-08-01T23:59:59.000Z

    Users with stand-alone personal computers and personal printers usually find printing simple, but on a VAX computer or VAX cluster there may be many printers of different types located in different areas. The print queues set up for these printers may require different form qualifiers and may not all be able to print all documents. This article describes the basic steps a VAX system manager should take in setting up and managing print queues on a VAX and tells how to access these queues from a VAX, Unix, Macintosh, or DOS Computer. It gives a basic overview, but includes several helpful items that are obscure or completely undocumented. Following this overview, there is a description of a Fortran program, MPRINT, written to simplify printing for users. The MPRINT program simplifies the choice of printers and print forms for users of VAX print queues by allowing them to select from a one line per queue menu. The menu includes queue descriptions and only lists printers which can correctly print the specified file. MPRINT selects the correct form to use based on file type and maximum record length of the file. MPRINT may be useful at your site, and provides examples of a number of system services. MPRINT includes routines to do a user open of a file and get information from the File and Record Access Blocks (FAB and RAB), and a routine to obtain information about print queues. There are also routines to parse a file name, detab a character buffer, and trim trailing nulls and blanks from a character string.

  6. Yield Stress Materials in Soft Condensed Matter

    E-Print Network [OSTI]

    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.

  7. Shear banding in soft glassy materials

    E-Print Network [OSTI]

    Suzanne M. Fielding

    2014-08-20T23:59:59.000Z

    Many soft materials, including foams, dense emulsions, micro gel bead suspensions, star polymers, dense packing of surfactant onion micelles, and textured morphologies of liquid crystals, share the basic "glassy" features of structural disorder and metastability. These in turn give rise to several notable features in the low frequency shear rheology (deformation and flow properties) of these materials: in particular, the existence of a yield stress below which the material behaves like a solid, and above which it flows like a liquid. In the last decade, intense experimental activity has also revealed that these materials often display a phenomenon known as shear banding, in which the flow profile across the shear cell exhibits macroscopic bands of different viscosity. Two distinct classes of yield stress fluid have been identified: those in which the shear bands apparently persist permanently (for as long as the flow remains applied), and those in which banding arises only transiently during a process in which a steady flowing state is established out of an initial rest state (for example, in a shear startup or step stress experiment). After surveying the motivating experimental data, we describe recent progress in addressing it theoretically, using the soft glassy rheology model and a simple fluidity model. We also briefly place these theoretical approaches in the context of others in the literature, including elasto-plastic models, shear transformation zone theories, and molecular dynamics simulations. We discuss finally some challenges that remain open to theory and experiment alike.

  8. Printing and Scanning Instructions Printing on Savin (reserved for Job Market/RA/TA print jobs ONLY)

    E-Print Network [OSTI]

    Niebur, Ernst

    1 Printing and Scanning Instructions Printing on Savin (reserved for Job Market/RA/TA print jobs, stapling, or three holes punch, you can find them under the "Layout" tab and "Advanced". #12;2 Scanning on Savin (NOTE: scanning is Free of Charge) A feature of the new copier is the option of using it to scan

  9. University of Sheffield Sustainable Print Policy 2013

    E-Print Network [OSTI]

    Martin, Stephen John

    produced, print consumables used, the number of personal printing devices on campus. 3. It applies to all screen or via projection at meetings, use of personal devices such as laptop computers or tablets. 9 printing devices whether connected to the network, connected locally via desktop computing, photocopiers

  10. Handling Soft Constraints in the Semantic Web Architecture

    E-Print Network [OSTI]

    Preece, Alun

    for a service-providing agent to reason about its commitments as soft constraints. The two essential of CIF/SWRL. The soft CSP on- tology is intended to be used with CIF/SWRL, but is also potentially usable to the particular constraint satisfaction problem (CSP) in which the constraint is being applied. In relation

  11. Optimal Soft Arc Consistency M.C. Cooper

    E-Print Network [OSTI]

    Winckler, Marco Antonio Alba

    The Valued CSP (VCSP) framework is a generic optimization framework with a wide range of applications. Soft, an essential ingredient of a branch and bound search. But soft AC is much more complex than traditional AC . In this paper, we focus on Weighted CSP (WCSP) where costs are numbers, combined by addition. This VCSP sub

  12. Influence of surface traction on soft robot undulation

    E-Print Network [OSTI]

    Liu, David R.

    , assist in human motor tasks, and reduce manufacturing costs. As with natural invertebrates, soft robotsArticle Influence of surface traction on soft robot undulation The International Journal of Robotics Research 32(13) 1577­1584 © The Author(s) 2013 Reprints and permissions: sagepub

  13. High-Frequency Resistivity of Soft Magnetic Granular Films

    E-Print Network [OSTI]

    permeability was measured and used to predict the power loss expected when granular films are used as high-frequency core materials for film inductors. The power loss is predicted to be lower than that of commercial Ni permeability, power loss, soft magnetic film. I. INTRODUCTION SOFT magnetic granular films are considered ideal

  14. Memory with memory: Soft assignment in Genetic Programming

    E-Print Network [OSTI]

    Poli, Riccardo

    Keywords Genetic Programming, Linear GP, Soft assignment, Memory with memory, Symbolic regressionMemory with memory: Soft assignment in Genetic Programming Nicholas Freitag McPhee Division was carried over to most versions of genetic programming (GP) that had state and assignments. This includes

  15. Memory with Memory: Soft Assignment in Genetic Programming

    E-Print Network [OSTI]

    Fernandez, Thomas

    Keywords Genetic Programming, Linear GP, Soft assignment, Memory with memory, Symbolic regressionMemory with Memory: Soft Assignment in Genetic Programming Nicholas Freitag McPhee Division was carried over to most versions of genetic programming (GP) that had state and assignments. This includes

  16. Reflection soft X-ray microscope and method

    DOE Patents [OSTI]

    Suckewer, S.; Skinner, C.H.; Rosser, R.

    1993-01-05T23:59:59.000Z

    A reflection soft X-ray microscope is provided by generating soft X-ray beams, condensing the X-ray beams to strike a surface of an object at a predetermined angle, and focusing the X-ray beams reflected from the surface onto a detector, for recording an image of the surface or near surface features of the object under observation.

  17. Significance of Soft Zone Sediments at the SRS

    SciTech Connect (OSTI)

    Aadland, R.K.

    2000-02-03T23:59:59.000Z

    The purpose of this report is to provide information on the origin, extent and stability of ''soft zones'' in the carbonate bearing strata at the Savannah River Site (SRS). As part of this study, a comprehensive historical compendium of how soft zones have been addressed during the past 47 years at SRS is reviewed.

  18. Effects Of Sea Otter Colonization On Soft-Sediment Intertidal Prey Assemblages In Glacier Bay, Alaska

    E-Print Network [OSTI]

    Weitzman, Benjamin Phillip

    2013-01-01T23:59:59.000Z

    structuring in soft-sediment systems over a multi-decadalcaloric demands. In soft-substrate systems, recolonizing seainfluences of otters on soft-sediment systems in Glacier Bay

  19. Patient-Specific Interactive Ultrasound Image Simulation with Soft-Tissue Deformation

    E-Print Network [OSTI]

    Petrinec, Kresimir

    2013-01-01T23:59:59.000Z

    software developer (Systems Engineer), Soft- ware Imaging,i.e. , the system does not model soft-tissue mechanics andour system, we separated the simulations of skin and soft-

  20. Phase Noise in MIMO Systems: Bayesian Cramer-Rao Bounds and Soft-Input Estimation

    E-Print Network [OSTI]

    Nasir, Ali A; Mehrpouyan, Hani; Schober, Robert; Hua, Yingbo

    2013-01-01T23:59:59.000Z

    for a 4 4 MIMO system, the proposed soft-input EKF-EKSin MIMO Systems: Bayesian Cramér–Rao Bounds and Soft-Inputof a MIMO system employing the proposed soft-input EKF-EKS

  1. ICLP 2014 1 A Proof Theoretic Study of Soft Concurrent Constraint

    E-Print Network [OSTI]

    Nigam, Vivek

    for defining constraint systems where agents are allowed to tell7 and ask soft constraints. Nevertheless a declarative reading of processes as formulas while providing a logical framework13 for soft-CCP based systems systems) to soft-co

  2. PAPILLON: Designing Curved Display Surfaces With Printed Optics

    E-Print Network [OSTI]

    Poupyrev, Ivan

    . It is based on 3D printed optics, where the surface of the display is constructed as a bundle of printed light Interfaces - Graphical user interfaces; Input devices and strategies. Keywords: 3D printing, fabrication

  3. E-print Network : Main View : Deep Federated Search

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

    E-print Network Search Powered By Deep Web Technologies New Search Preferences E-print Network E-print Network Skip to main content FAQ * HELP * SITE MAP * CONTACT US Home * About...

  4. Organic and Printed Electronics for Biological Microfluidic Applications

    E-Print Network [OSTI]

    Jagannathan, Lakshmi

    2012-01-01T23:59:59.000Z

    and Q. Zhang, “Printed electronics for low-cost electronicUltra-Low-Cost Printed Electronics,” Ph.D. dissertation,capability of printed electronics to make important aspects

  5. An Efficient Approach towards Mitigating Soft Errors Risks

    E-Print Network [OSTI]

    Sadi, Muhammad Sheikh; Uddin, Md Nazim; Jürjens, Jan

    2011-01-01T23:59:59.000Z

    Smaller feature size, higher clock frequency and lower power consumption are of core concerns of today's nano-technology, which has been resulted by continuous downscaling of CMOS technologies. The resultant 'device shrinking' reduces the soft error tolerance of the VLSI circuits, as very little energy is needed to change their states. Safety critical systems are very sensitive to soft errors. A bit flip due to soft error can change the value of critical variable and consequently the system control flow can completely be changed which leads to system failure. To minimize soft error risks, a novel methodology is proposed to detect and recover from soft errors considering only 'critical code blocks' and 'critical variables' rather than considering all variables and/or blocks in the whole program. The proposed method shortens space and time overhead in comparison to existing dominant approaches.

  6. Business Agreements Printing & Mail Services

    E-Print Network [OSTI]

    Business Agreements Storehouse Printing & Mail Services Receiving Equipment Management Director Planning/ Resource Planning Space ManagementAccounting Services Student Business Services Education Administration Finance and Business Operations Organization Risk Management Finance & Business Operations

  7. Collective dynamics of soft active particles

    E-Print Network [OSTI]

    Ruben van Drongelen; Anshuman Pal; Carl P. Goodrich; Timon Idema

    2015-02-04T23:59:59.000Z

    We present a model of soft active particles that leads to a rich array of collective behavior found also in dense biological swarms of bacteria and other unicellular organisms. Our model uses only local interactions, such as Vicsek-type nearest neighbor alignment, short-range repulsion, and a local boundary term. Changing the relative strength of these interactions leads to migrating swarms, rotating swarms and jammed swarms, as well as swarms that exhibit run-and-tumble motion, alternating between migration and either rotating or jammed states. Interestingly, although a migrating swarm moves slower than an individual particle, the diffusion constant can be up to three orders of magnitude larger, suggesting that collective motion can be highly advantageous, for example, when searching for food.

  8. Effective chiral magnetic currents, topological magnetic charges, and microwave vortices in a cavity with an enclosed ferrite disk

    E-Print Network [OSTI]

    Michael Sigalov; E. O. Kamenetskii; Reuven Shavit

    2007-07-09T23:59:59.000Z

    In microwaves, a TE-polarized rectangular-waveguide resonator with an inserted thin ferrite disk gives an example of a nonintegrable system. The interplay of reflection and transmission at the disk interfaces together with the material gyrotropy effect gives rise to whirlpool-like electromagnetic vortices in the proximity of the ferromagnetic resonance. Based on numerical simulation, we show that a character of microwave vortices in a cavity can be analyzed by means of consideration of equivalent magnetic currents. Maxwell equations allows introduction of a magnetic current as a source of the electromagnetic field. Specifically, we found that in such nonintegrable structures, magnetic gyrotropy and geometrical factors leads to the effect of symmetry breaking resulting in effective chiral magnetic currents and topological magnetic charges. As an intriguing fact, one can observe precessing behavior of the electric-dipole polarization inside a ferrite disk.

  9. Gas bubble dynamics in soft materials

    E-Print Network [OSTI]

    J. M. Solano-Altamirano; John D. Malcolm; Saul Goldman

    2014-10-14T23:59:59.000Z

    Epstein and Plesset's seminal work on the rate of gas bubble dissolution and growth in a simple liquid is generalized to render it applicable to a gas bubble embedded in a soft elastic medium. Both the underlying diffusion equation and the expression for the gas bubble pressure were modified to allow for the non-zero shear modulus of the elastic medium. The extension of the diffusion equation results in a trivial shift (by an additive constant) in the value of the diffusion coefficient, and does not change the form of the rate equations. But the use of a Generalized Young-Laplace equation for the bubble pressure resulted in significant differences on the dynamics of bubble dissolution and growth, relative to a simple liquid medium. Depending on whether the salient parameters (solute concentration, initial bubble radius, surface tension, and shear modulus) lead to bubble growth or dissolution, the effect of allowing for a non-zero shear modulus in the Generalized Young-Laplace equation is to speed up the rate of bubble growth, or to reduce the rate of bubble dissolution, respectively. The relation to previous work on visco-elastic materials is discussed, as is the connection of this work to the problem of Decompression Sickness (specifically, "the bends"). Examples of tissues to which our expressions can be applied are provided. Also, a new phenomenon is predicted whereby, for some parameter values, a bubble can be metastable and persist for long times, or it may grow, when embedded in a homogeneous under-saturated soft elastic medium.

  10. Tuned, driven, and active soft matter

    E-Print Network [OSTI]

    Andreas M. Menzel

    2015-01-28T23:59:59.000Z

    One characteristic feature of soft matter systems is their strong response to external stimuli. As a consequence they are comparatively easily driven out of their ground state and out of equilibrium, which leads to many of their fascinating properties. Here, we review illustrative examples. This review is structured by an increasing distance from the equilibrium ground state. On each level, examples of increasing degree of complexity are considered. In detail, we first consider systems that are quasi-statically tuned or switched to a new state by applying external fields. These are common liquid crystals, liquid crystalline elastomers, or ferrogels and magnetic elastomers. Next, we concentrate on systems steadily driven from outside e.g. by an imposed flow field. In our case, we review the reaction of nematic liquid crystals, of bulk-filling periodically modulated structures such as block copolymers, and of localized vesicular objects to an imposed shear flow. Finally, we focus on systems that are "active" and "self-driven". Here our range spans from idealized self-propelled point particles, via sterically interacting particles like granular hoppers, via microswimmers such as self-phoretically driven artificial Janus particles or biological microorganisms, via deformable self-propelled particles like droplets, up to the collective behavior of insects, fish, and birds. As we emphasize, similarities emerge in the features and behavior of systems that at first glance may not necessarily appear related. We thus hope that our overview will further stimulate the search for basic unifying principles underlying the physics of these soft materials out of their equilibrium ground state.

  11. adult soft-tissue sarcoma: Topics by E-print Network

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

    follow-up, 29 MRSA clinical infections occurred in 25 participants. In multivariate analysis, MRSA clinical infection was significantly associated with MRSA colonization of the...

  12. Direct observation of stress accumulation and relaxation in small bundles of superconducting vortices in tungsten thin-films

    E-Print Network [OSTI]

    I. Guillamon; H. Suderow; S. Vieira; J. Sese; R. Cordoba; J. M. De Teresa; M. R. Ibarra

    2011-01-12T23:59:59.000Z

    We study the behavior of bundles of superconducting vortices when increasing the magnetic field using scanning tunneling microscopy and spectroscopy (STM/S) at 100 mK. Pinning centers are given by features on the surface corrugation. We find strong net vortex motion in a bundle towards a well defined direction. We observe continuos changes of the vortex arrangements, and identify small displacements, which stress and deform the vortex bundle, separated by larger re-arrangements or avalanches, which release accumulated stress.

  13. Satellite Magnetic Resonances of a Bound Pair of Half-Quantum Vortices in Rotating Superfluid He-3-a

    E-Print Network [OSTI]

    Hu, Chia-Ren; MAKI, K.

    1987-01-01T23:59:59.000Z

    PHYSICAL REVIE%' B VOLUME 36, NUMBER 13 1 NOVEMBER 1987 Satellite magnetic resonances of a bound pair of half-quantum vortices in rotating superfluid He- A Chia-Ren Hu Center for Theoretical Physics, Department of Physics, Texas A&M University..., College Station, Texas 77843-4242 Kazumi Maki Department of Physics, University of Southern California, Los Angeles, California 90089-0484 (Received 29 December 1986) The transverse magnetic resonance satellite frequency and intensity associated with a...

  14. Does phentolamine mesylate reverse soft-tissue anesthesia after 3% mepivacaine?

    E-Print Network [OSTI]

    Silvera, Andreia Minasian

    2013-01-01T23:59:59.000Z

    reversal of soft-tissue anesthesia after dental procedures.following local anesthesia reversal with phentolamineet al. Reversal of soft-tissue anesthesia with phentolamine

  15. Soft X-Ray Microscopy and Spectroscopy at the Molecular Environmental...

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

    Soft X-Ray Microscopy and Spectroscopy at the Molecular Environmental Science Beamline at the Advanced Light Source. Soft X-Ray Microscopy and Spectroscopy at the Molecular...

  16. LDPC-Coded MIMO Systems With Unknown Block Fading Channels: Soft MIMO Detector Design, Channel Estimation, and Code Optimization

    E-Print Network [OSTI]

    Zheng, Jun; Rao, Bhaskar D

    2006-01-01T23:59:59.000Z

    multiple-output (MIMO) system, soft-input soft-output MIMOLDPC)-coded MIMO systems employing a soft iterative receiverLDPC-coded MIMO system with optimal soft MIMO detector over

  17. Coherent vorticity extraction in resistive drift-wave turbulence: Comparison of orthogonal wavelets versus proper orthogonal decomposition

    SciTech Connect (OSTI)

    Futatani, S. [France-Japan Magnetic Fusion Laboratory, CNRS, France; Bos, W.J.T. [CNRS, Ecole Centrale de Lyon, Universite Claude Bernard Lyon; Del-Castillo-Negrete, Diego B [ORNL; Schneider, Kai [Universite d'Aix-Marseille; Benkadda, S. [France-Japan Magnetic Fusion Laboratory, CNRS, France; Farge, Marie [Laboratoire de Meteorologie Dynamique-CNRL, Ecole Normale Superieure

    2011-01-01T23:59:59.000Z

    We assess two techniques for extracting coherent vortices out of turbulent flows: the wavelet based Coherent Vorticity Extraction (CVE) and the Proper Orthogonal Decomposition (POD). The former decomposes the flow field into an orthogonal wavelet representation and subsequent thresholding of the coefficients allows one to split the flow into organized coherent vortices with non-Gaussian statistics and an incoherent random part which is structureless. POD is based on the singular value decomposition and decomposes the flow into basis functions which are optimal with respect to the retained energy for the ensemble average. Both techniques are applied to direct numerical simulation data of two-dimensional drift-wave turbulence governed by Hasegawa Wakatani equation, considering two limit cases: the quasi-hydrodynamic and the quasi-adiabatic regimes. The results are compared in terms of compression rate, retained energy, retained enstrophy and retained radial flux, together with the enstrophy spectrum and higher order statistics. (c) 2010 Published by Elsevier Masson SAS on behalf of Academie des sciences.

  18. acquisition facilitates 3d: Topics by E-print Network

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

    Physics Websites Summary: measurements and finally its instantiation through 3D printing, are presented. Laser scanner acquisition, reconstruction and 3D printing lend well...

  19. asce structural division: Topics by E-print Network

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

    ABSTRACT Using modular construction equipment and additive manufacturing (3D printing) techniques large-scale 3D printing have been developed and tested in earth-based...

  20. automated 3-d voxel: Topics by E-print Network

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

    Websites Summary: from a real-life application. 1 Introduction Recent advances in 3D printing technology have made of materials, higher printing speeds, and lower costs....

  1. Printing a Car: A Team Effort in Innovation (Text Version) |...

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

    video Printing a Car: A Team Effort in Innovation highlighting the demonstration of 3D printing to create a working electric vehicle, live during the International Manufacturing...

  2. advanced technologies directorate: Topics by E-print Network

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

    Directorate Geosciences Websites Summary: drew media attention and articles on 3D printing, including coverage by Popular Mechanics and website on 3D printing and prototyping...

  3. assess 3d bone: Topics by E-print Network

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

    Websites Summary: from a real-life application. 1 Introduction Recent advances in 3D printing technology have made of materials, higher printing speeds, and lower costs....

  4. asce divisions air: Topics by E-print Network

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

    ABSTRACT Using modular construction equipment and additive manufacturing (3D printing) techniques large-scale 3D printing have been developed and tested in earth-based...

  5. applying space technology: Topics by E-print Network

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

    Directorate Geosciences Websites Summary: drew media attention and articles on 3D printing, including coverage by Popular Mechanics and website on 3D printing and prototyping...

  6. assisted laser scanner: Topics by E-print Network

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

    pipeline Physics Websites Summary: measurements and finally its instantiation through 3D printing, are presented. Laser scanner acquisition, reconstruction and 3D printing lend...

  7. antennarius striatus shaw: Topics by E-print Network

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

    Sciences Websites Summary: 'real' and virtual). ART Decorative Arts Lharne Shaw, 3D Printing of Relief Forms onto Ceramic Tiles 3D printing of relief forms onto ceramic...

  8. aligned single wall: Topics by E-print Network

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

    Page Topic Index 1 Printed Multilayer Superstructures of Aligned Single-Walled Carbon Materials Science Websites Summary: Printed Multilayer Superstructures of Aligned...

  9. alara center alara: Topics by E-print Network

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

    Yamamoto Printed by: Hagadone Printing Company Photo: WaikikiINTERNATIONAL PACIFIC RESEARCH CENTER APRIL 2004-MARCH 2005 REPORT SCHOOL OF OCEAN AND EARTH . . . . . . . . . . ....

  10. Dispenser Printed Zinc Microbattery with an Ionic Liquid Gel Electrolyte

    E-Print Network [OSTI]

    Ho, Christine Chihfan

    2010-01-01T23:59:59.000Z

    using dispenser printing including (a) 3D polymer molds, (b)using dispenser printing including (a) 3D polymer molds, (b)

  11. 3D Printing in 30 Seconds | Department of Energy

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

    3D Printing in 30 Seconds 3D Printing in 30 Seconds Addthis An error occurred. Unable to execute Javascript. Duration :38 Topic Science & Technology...

  12. Disposable Carbon Nanotube Modified Screen-Printed Biosensor...

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

    Carbon Nanotube Modified Screen-Printed Biosensor for Amperometric Detection of Organophosphorus Pesticides and Nerve Disposable Carbon Nanotube Modified Screen-Printed Biosensor...

  13. Dispenser Printed Zinc Microbattery with an Ionic Liquid Gel Electrolyte

    E-Print Network [OSTI]

    Ho, Christine Chihfan

    2010-01-01T23:59:59.000Z

    Ink-jet printed carbon supercapacitor electrodes on gold,Ink-jet printed carbon supercapacitor electrodes on gold,Microcapacitors Thin film supercapacitor (TFSC) research has

  14. Voltammetric Analysis of Europium at Screen-Printed Electrodes...

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

    Voltammetric Analysis of Europium at Screen-Printed Electrodes Modified with Salicylamide Self-Assembled on Mesoporous Silica. Voltammetric Analysis of Europium at Screen-Printed...

  15. Printing | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you wantJoin us for| Department of Energy Primus Power'sPrinting

  16. Particle Concentration At Planet Induced Gap Edges and Vortices: I. Inviscid 3-D Hydro Disks

    E-Print Network [OSTI]

    Zhu, Zhaohuan; Rafikov, Roman R; Bai, Xuening

    2013-01-01T23:59:59.000Z

    We perform a systematic study of the dynamics of dust particles in protoplanetary disks with embedded planets using global 2-D and 3-D inviscid hydrodynamic simulations. We implement Lagrangian particles into magnetohydrodynamic code Athena with cylindrical coordinates and explore the behavior of dust grains with sizes spanning more than 6 orders of magnitude --- from the well-coupled to decoupled limits. We find two distinct outcomes depending on the mass of the embedded planet, which is varied between 8 M_earth to 9 M_{J}. In the presence of a low mass planet (8 M_earth), two narrow gaps start to open in the gas on each side of the planet where the density waves shock. Although these gaps are quite shallow, they dramatically affect particle drift speed and cause significant, axisymmetric dust depletion near the planet. On the other hand, a more massive planet (>0.1 M_{J}) carves out a deeper gap with sharp edges, which are unstable to the formation of vortices that later merge into a single vortex. The vort...

  17. A stochastic particle-mesh scheme for uncertainty propagation in vortical flows

    SciTech Connect (OSTI)

    Le Maitre, Olivier P. [Laboratoire de Mecanique et d'Energetique d'Evry and LIMSI-CNRS, Universite d'Evry Val d'Essonne, 40, rue du Pelvoux, CE 1455, 91020 Evry Cedex (France)], E-mail: olm@iup.univ-evry.fr; Knio, Omar M. [Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218-2686 (United States)], E-mail: knio@jhu.edu

    2007-09-10T23:59:59.000Z

    A new mesh-particle scheme is constructed for uncertainty propagation in vortical flow. The scheme is based on the incorporation of polynomial chaos (PC) expansions into a Lagrangian particle approximation of the Navier-Stokes equations. The main idea of the method is to use a unique set of particles to transport the stochastic modes of the solution. The particles are transported by the mean velocity field, while their stochastic strengths are updated to account for diffusive and convective effects induced by the coupling between stochastic modes. An integral treatment is used for the evaluation of the coupled stochastic terms, following the framework of the particle strength exchange (PSE) methods, which yields a conservative algorithm. It is also shown that it is possible to apply solution algorithms used in deterministic setting, including particle-mesh techniques and particle remeshing. Thus, the method combines the advantages of particles discretizations with the efficiency of PC representations. Validation of the method on uncertain diffusion and convection problems is first performed. An example is then presented of natural convection of a hot patch of fluid in infinite domain, and the computations are used to illustrate the effectiveness of the approach for both large number of particles and high-order PC expansions.

  18. Ertel's vorticity theorem and new flux surfaces in multi-fluid plasmas

    SciTech Connect (OSTI)

    Hameiri, Eliezer [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)] [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)

    2013-09-15T23:59:59.000Z

    Dedicated to Professor Harold Weitzner on the occasion of his retirement“Say to wisdom ‘you are my sister,’ and to insight ‘you are my relative.’”—Proverbs 7:4Based on an extension to plasmas of Ertel's classical vorticity theorem in fluid dynamics, it is shown that for each species in a multi-fluid plasma there can be constructed a set of nested surfaces that have this species' fluid particles confined within them. Variational formulations for the plasma evolution and its equilibrium states are developed, based on the new surfaces and all of the dynamical conservation laws associated with them. It is shown that in the general equilibrium case, the energy principle lacks a minimum and cannot be used as a stability criterion. A limit of the variational integral yields the two-fluid Hall-magnetohydrodynamic (MHD) model. A further special limit yields MHD equilibria and can be used to approximate the equilibrium state of a Hall-MHD plasma in a perturbative way.

  19. Property of Zero-Energy Flows and Creations and Annihilations of Vortices in Quantum Mechanics

    E-Print Network [OSTI]

    Tsunehiro Kobayashi

    2003-01-09T23:59:59.000Z

    Time-dependent processes accompanied by vortex creations and annihilations are investigated in terms of the eigenstates in conjugate spaces of Gel'fand triplets in 2-dimensions. Creations and annihilations of vortices are described by the insertions of unstable eigenstates with complex-energy eigenvalues into stable states written by the superposition of eigenstates with zero-energy eigenvalues. Some concrete examples are presented in terms of the eigenfunctions of the 2-dimensional parabolic potential barrier, i.e., $-m \\gamma^2 (x^2+y^2)/2$. We show that the processes accompanied by vortex creations and annihilations can be analyzed in terms of the eigenfunctions in the conjugate spaces of Gel'fand triplets. Throughout these examinations we point out three interesting properties of the zero-energy flows. (i) Mechanisms using the zero-energy flows are absolutely economical from the viewpoint of energy consumption. (ii) An enormous amount of informations can be discriminated in terms of the infinite variety of the zero-energy flows. (iii) The zero-energy flow patterns are absolutely stable in any disturbance by inserting arbitrary decaying flows with complex-energy eigenvalues.

  20. Soft Artificial Skin with Multi-Modal Sensing Capability Using Embedded Liquid Conductors

    E-Print Network [OSTI]

    Park, Yong-Lae

    circuit. Silicone rubber layers with channel patterns, cast with 3D printed molds, were bonded to create

  1. Can soft biometric traits assist user recognition? Anil K. Jaina, Sarat C. Dassb and Karthik Nandakumara

    E-Print Network [OSTI]

    Dass, Sarat C.

    vein scan, facial and hand thermography, ear shape, gait, keystroke dynamics and palm-print are under

  2. FSU Office of Research Program in Interdisciplinary Computing (PIC) What is 3D printing?

    E-Print Network [OSTI]

    Ronquist, Fredrik

    (PIC) What is 3D printing? 3D printing is a process of making. 3D printing is distinct from traditional machining techniques, which mostly organs, meat, circuit boards and batteries. 3D printing impacts nearly every

  3. Isolated and soft-switched power converter

    DOE Patents [OSTI]

    Peng, Fang Zheng (Knoxville, TN); Adams, Donald Joe (Knoxville, TN)

    2002-01-01T23:59:59.000Z

    An isolated and soft-switched power converter is used for DC/DC and DC/DC/AC power conversion. The power converter includes two resonant tank circuits coupled back-to-back through an isolation transformer. Each resonant tank circuit includes a pair of resonant capacitors connected in series as a resonant leg, a pair of tank capacitors connected in series as a tank leg, and a pair of switching devices with anti-parallel clamping diodes coupled in series as resonant switches and clamping devices for the resonant leg. The power converter is well suited for DC/DC and DC/DC/AC power conversion applications in which high-voltage isolation, DC to DC voltage boost, bidirectional power flow, and a minimal number of conventional switching components are important design objectives. For example, the power converter is especially well suited to electric vehicle applications and load-side electric generation and storage systems, and other applications in which these objectives are important. The power converter may be used for many different applications, including electric vehicles, hybrid combustion/electric vehicles, fuel-cell powered vehicles with low-voltage starting, remote power sources utilizing low-voltage DC power sources, such as photovoltaics and others, electric power backup systems, and load-side electric storage and generation systems.

  4. Isotope and Temperature Effects in Liquid Water Probed by Soft...

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

    processes in aqueous environments is lacking. To address this need, researchers from Germany and the U.S. have used soft x-ray spectroscopy at the ALS to gain detailed insight...

  5. Resonant Soft X-Ray Scattering - Combining Structural with Spectroscop...

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

    as well as important L-edges of the 3d transition metals important in magnetic and oxide systems. Measurements of soft x-ray absorption spectra are inherently surface sensitive,...

  6. Soft x-ray capabilities for investigating the strongly correlated...

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

    X-ray, aiming to understand their sciences for applying a new material. In particular, soft x-ray capabilities have been used to obtain microscopic-level understanding of the...

  7. Design and control of a soft biomimetic batoid robot

    E-Print Network [OSTI]

    Cloitre, Audren Damien Prigent

    2013-01-01T23:59:59.000Z

    This thesis presents the work accomplished in the design, experimental characterization and control of a soft batoid robot. The shape of the robot is based on the body of the common stingray, Dasyatidae, and is made of ...

  8. Mechanical constraints enhance electrical energy densities of soft dielectrics

    E-Print Network [OSTI]

    Ferrari, Silvia

    Mechanical constraints enhance electrical energy densities of soft dielectrics Lin Zhang, Qiming, the dielectric will breakdown electrically. The breakdown limits the electrical energy density of the dielectric electric fields and thus increase their electrical energy densities. The mechanical constraints suppress

  9. Heavy quark symmetry in the soft collinear effective theory

    E-Print Network [OSTI]

    Mantry, Gautam

    2005-01-01T23:59:59.000Z

    We study strong interaction effects in nonleptonic decays of ... mesons with energetic particles in the final state. An introduction to Soft Collinear Effective Theory (SCET), the appropriate effective field theory of QCD ...

  10. An experimental investigation of mine burial penetration in soft sediments 

    E-Print Network [OSTI]

    Munim, Mohammed Abdul

    2003-01-01T23:59:59.000Z

    An experimental program was conducted to study the penetration behavior of mines in soft sediment. Model tests were conducted on sediments collected from the Gulf of Mexico seabed. The size of the model mine was approximately one third...

  11. Improved e-Jet Printing -TFOT Improved e-Jet Printing

    E-Print Network [OSTI]

    Rogers, John A.

    Improved e-Jet Printing - TFOT Home Sections News Articles Forums About Us Improved e-Jet Printing at the University of Illinois have developed a technology that provides higher resolution and more versatility in e-jet printing. As opposed to conventional ink-jet printers, where heat or mechanical vibrations are used

  12. Department of Computer Science & Engineering Scheduling Design and Verification for Open Soft Real-time Systems

    E-Print Network [OSTI]

    Smart, William

    Soft Real-time Systems Authors: Robert Glaubius, Terry Tidwell,William D. Smart, and Christopher Gill and verification approach for open soft real-time systems, that can use different decision models, e.g., a Markov of scheduling policies for open soft real-time systems. #12;Scheduling Design and Verification for Open Soft

  13. Robust Performance of Soft Real-time Networked Control Systems with Data Dropouts 1

    E-Print Network [OSTI]

    Lemmon, Michael

    Robust Performance of Soft Real-time Networked Control Systems with Data Dropouts 1 Qiang Ling, . This class of systems is a model for soft real-time control systems in which the feedback path is implemented, the networked control system becomes a soft real-time system. In soft real-time networks, data packets may

  14. Soft Error Modeling and Protection for Sequential Elements Hossein Asadi and Mehdi B. Tahoori

    E-Print Network [OSTI]

    on system-level soft error rate. The number of clock cycles required for an error in a bistable to be propagated to system outputs is used to measure the vulnerability of bistables to soft errors. 1 Introduction, soft errors become the main reliability concern during lifetime operation of digital systems. Soft

  15. Journal of Applied Soft Computing (http://www.elsevier.com/locate/asoc/)

    E-Print Network [OSTI]

    Vouyioukas, Demosthenes

    . Rajkumar Roy Special Issue on Soft Computing in Embedded System Design Guest Editors Dr. Nadia Nedjah · Automatic Specification of embedded systems using soft computing techniques; · Intelligent Profiling of embedded systems using soft computing techniques; · Synthesis of embedded systems using soft computing

  16. Evaluation of Concurrency Control Strategies for Mixed Soft Real-Time Database Systems

    E-Print Network [OSTI]

    Cheng, Reynold Cheng Chun

    1 Evaluation of Concurrency Control Strategies for Mixed Soft Real-Time Database Systems Kam soft real-time database systems (MSRTDBS), in which both non-real-time and soft real-time transactions of both soft real-time and non-real-time transactions under different real-time supports in the system

  17. IMPROVING PIPELINED SOFT PROCESSORS WITH MULTITHREADING Martin Labrecque and J. Gregory Steffan

    E-Print Network [OSTI]

    Steffan, J. Gregory

    ,steffan}@eecg.toronto.edu ABSTRACT Designers of FPGA-based systems are increasingly in- cluding soft processors describe our infrastructure for de- signing and measuring soft processors, including the SPREE system for generating single-threaded pipelined soft proces- sors, our methodology for comparing soft processor designs

  18. Low-Cost Hardening of Image Processing Applications Against Soft Errors Ilia Polian1,2

    E-Print Network [OSTI]

    Polian, Ilia

    , and their hardening against soft errors becomes an issue. We propose a methodology to identify soft errors as uncritical based on their impact on the system's functionality. We call a soft error uncritical if its impact are imperceivable for the human user of the system. We focus on soft errors in the motion esti- mation subsystem

  19. Gluon distribution in proton at soft and hard pp collisions

    E-Print Network [OSTI]

    Lykasov, G I; Grinyuk, A A; Poghosyan, M; Dolbilov, A G

    2011-01-01T23:59:59.000Z

    We analyze the inclusive spectra of hadrons produced in $pp$ collisions at high energies in the mid-rapidity region within the soft QCD and perturbative QCD assuming the possible creation of the soft gluons at low intrinsic transverse momenta $k_t$. From the best description of the LHC data we found the parametrization of the unintegrated gluon distribution which at low $k_t$ is different from the one obtained within the perturbative QCD.

  20. Transitions between turbulent and laminar superfluid vorticity states in the outer core of a neutron star

    E-Print Network [OSTI]

    C. Peralta; A. Melatos; M. Giacobello; A. Ooi

    2006-07-08T23:59:59.000Z

    We investigate the global transition from a turbulent state of superfluid vorticity to a laminar state, and vice versa, in the outer core of a neutron star. By solving numerically the hydrodynamic Hall-Vinen-Bekarevich-Khalatnikov equations for a rotating superfluid in a differentially rotating spherical shell, we find that the meridional counterflow driven by Ekman pumping exceeds the Donnelly-Glaberson threshold throughout most of the outer core, exciting unstable Kelvin waves which disrupt the rectilinear vortex array, creating a vortex tangle. In the turbulent state, the torque exerted on the crust oscillates, and the crust-core coupling is weaker than in the laminar state. This leads to a new scenario for the rotational glitches observed in radio pulsars: a vortex tangle is sustained in the differentially rotating outer core by the meridional counterflow, a sudden spin-up event brings the crust and core into corotation, the vortex tangle relaxes back to a rectilinear vortex array, then the crust spins down electromagnetically until enough meridional counterflow builds up to reform a vortex tangle. The turbulent-laminar transition can occur uniformly or in patches; the associated time-scales are estimated from vortex filament theory. We calculate numerically the global structure of the flow with and without an inviscid superfluid component, for Hall-Vinen and Gorter-Mellink forms of the mutual friction. We also calculate the post-glitch evolution of the angular velocity of the crust and its time derivative, and compare the results with radio pulse timing data, predicting a correlation between glitch activity and Reynolds number.

  1. Soft-x-ray spectroscopy study of nanoscale materials

    SciTech Connect (OSTI)

    Guo, J.-H.

    2005-07-30T23:59:59.000Z

    The ability to control the particle size and morphology of nanoparticles is of crucial importance nowadays both from a fundamental and industrial point of view considering the tremendous amount of high-tech applications. Controlling the crystallographic structure and the arrangement of atoms along the surface of nanostructured material will determine most of its physical properties. In general, electronic structure ultimately determines the properties of matter. Soft X-ray spectroscopy has some basic features that are important to consider. X-ray is originating from an electronic transition between a localized core state and a valence state. As a core state is involved, elemental selectivity is obtained because the core levels of different elements are well separated in energy, meaning that the involvement of the inner level makes this probe localized to one specific atomic site around which the electronic structure is reflected as a partial density-of-states contribution. The participation of valence electrons gives the method chemical state sensitivity and further, the dipole nature of the transitions gives particular symmetry information. The new generation synchrotron radiation sources producing intensive tunable monochromatized soft X-ray beams have opened up new possibilities for soft X-ray spectroscopy. The introduction of selectively excited soft X-ray emission has opened a new field of study by disclosing many new possibilities of soft X-ray resonant inelastic scattering. In this paper, some recent findings regarding soft X-ray absorption and emission studies of various nanostructured systems are presented.

  2. 2013 CiSoft Virtual Academy The 2013 CiSoft Academy, a one day workshop that provides select Chevron

    E-Print Network [OSTI]

    Shahabi, Cyrus

    Oilfield Technologies (SOFT), was held on July 15, 2013. The Academy was conducted virtually to allow in the oilfield. Interns were then split into teams and were given competition questions based on information from

  3. acute cerebral stroke: Topics by E-print Network

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

    of embedded vortices in cerebral aneurysms under variable inflow rates during the cardiac cycle. Byrne, Greg 2013-01-01 82 Cognitive Effects on the Neurophysiology and Biomechanics...

  4. ac magnetization measurements: Topics by E-print Network

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

    the cracks are the objective of the inversion process. The proposed procedure Reilly, James P. 86 SQUID MEASUREMENTS OF MAGNETIC VORTICES IN VERY UNDERDOPED Physics Websites...

  5. advanced vortex element: Topics by E-print Network

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

    method with mesh adaptivity for computing vortex states in fastrotating BoseEinstein condensates Computer Technologies and Information Sciences Websites Summary: ) vortices, vortex...

  6. angiographic planar imaging: Topics by E-print Network

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

    to distinguish vortices from antivortices in quasi-two-dimensional Bose--Einstein condensates from a single image of the density of the atoms. Tilting the planar condensate...

  7. CAN 3D PRINTING REVOLUTIONIZE GLOBAL MANUFACTURING? A DELPHI STUDY

    E-Print Network [OSTI]

    CAN 3D PRINTING REVOLUTIONIZE GLOBAL MANUFACTURING? A DELPHI STUDY ­ Master Thesis Proposal ­ BACKGROUND 3D printing (or additive manufacturing) is not an entirely new phenomenon. First introduced and president of Foxconn, calls it a nice "gimmick" and even Nick Allen, founder of 3D printing company 3D Print

  8. 3D Printing of Scintillating Materials

    E-Print Network [OSTI]

    Y. Mishnayot; M. Layani; I. Cooperstein; S. Magdassi; G. Ron

    2014-06-15T23:59:59.000Z

    We demonstrate, for the first time, the applicability of 3D printing technique to the manufacture of scintillation detectors. We report of a formulation, usable in stereolithographic printing, that exhibits scintillation efficiency on the order of 30\\% of that of commercial polystyrene based scintillators. We discuss the applicability of these techniques and propose future enhancements that will allow tailoring the printed scintillation detectors to various application.

  9. 3D Printing of Scintillating Materials

    E-Print Network [OSTI]

    Mishnayot, Y; Cooperstein, I; Magdassi, S; Ron, G

    2014-01-01T23:59:59.000Z

    We demonstrate, for the first time, the applicability of 3D printing technique to the manufacture of scintillation detectors. We report of a formulation, usable in stereolithographic printing, that exhibits scintillation efficiency on the order of 30\\% of that of commercial polystyrene based scintillators. We discuss the applicability of these techniques and propose future enhancements that will allow tailoring the printed scintillation detectors to various application.

  10. Parallel and perpendicular velocity sheared flows driven tripolar vortices in an inhomogeneous electron-ion quantum magnetoplasma

    SciTech Connect (OSTI)

    Mirza, Arshad M. [Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320 (Pakistan); Masood, W. [TPPD, PINSTECH, P.O. Nilore, Islamabad (Pakistan) and National Centre for Physics (NCP), Shahdara Valley Road, 44000 Islamabad (Pakistan)

    2011-12-15T23:59:59.000Z

    Nonlinear equations governing the dynamics of finite amplitude drift-ion acoustic-waves are derived by taking into account sheared ion flows parallel and perpendicular to the ambient magnetic field in a quantum magnetoplasma comprised of electrons and ions. It is shown that stationary solution of the nonlinear equations can be represented in the form of a tripolar vortex for specific profiles of the equilibrium sheared flows. The tripolar vortices are, however, observed to form on very short scales in dense quantum plasmas. The relevance of the present investigation with regard to dense astrophysical environments is also pointed out.

  11. Conditional averaging on volumetric velocity fields for analysis of the pseudo-periodic organization of jet-in-crossflow vortices

    E-Print Network [OSTI]

    Cambonie, Tristan

    2014-01-01T23:59:59.000Z

    Volumetric velocimetry measurements have been performed on a round jet in crossflow (JICF). Two kind of conditional averaging process are presented : a global conditional average (GCA) and a local conditional average (LCA). Vortices crossing the JICF symmetry plane are used to quantify the jet pseudo-periodicity leading to the GCA and LCA definitions. Because they make possible to improve the velocity field resolution as well as to significantly reduce the experimental noise, these conditional averages are an interesting and efficient way to study the instantaneous swirling structures of this instantaneous flow.

  12. Instabilities of vortices in a binary mixture of trapped Bose-Einstein condensates: Role of excitations with positive and negative energies

    E-Print Network [OSTI]

    Dmitry V. Skryabin

    2000-11-08T23:59:59.000Z

    Correspondence between frequency and energy spectra and biorthogonality conditions for the excitations of Bose-Einstein condensates described by Gross-Pitaevskii model have been derived selfconsistently revealing several novel aspects originating in nonselfadjoitness of the Bogoliubov operator. It has been demonstrated that frequency resonances of the excitations with positive and negative energies can lead to their mutual annihilation and appearance of the collective modes with complex frequencies and zero energies. Conditions for the avoided crossing of energy levels have also been discussed. General theory has been verified both numerically and analytically in the weak interaction limit considering an example of vortices in a binary mixture of condensates. Growth of excitations with complex frequencies leads to spiraling of the unit and double vortices out of the condensate center to its periphery and to splitting of the double and higher order vortices to the unit ones.

  13. Page | 1 Managed Print Project Outline Pull Printing

    E-Print Network [OSTI]

    Glasgow, University of

    by extending specialist printing facilities to all users. The principal drivers for the project are carbon. Estimates are: 40% reduction in CO2 (from 477,676kg to 286,857kg; 60% reduction in electricity usage from the completion of these initiatives. The UK government's introduction of the Carbon Reduction Commitments (CRC

  14. VOLUME 83, NUMBER 11 P H Y S I C A L R E V I E W L E T T E R S 13 SEPTEMBER 1999 Vortex Motion Driven by a Background Vorticity Gradient

    E-Print Network [OSTI]

    Schecter, David

    on the case where zb is positive, cylindrically symmetric, and monotonically decreasing at t 0, making clumps on planets with strong zonal winds, with holes in vorticity troughs, and clumps on vorticity peaks [9 focus on cylindrical geometry, where the flow conserves canonical angular momentum, Pu R d2 r zr2

  15. Surface tension and contact with soft elastic solids

    E-Print Network [OSTI]

    Robert W. Style; Callen Hyland; Rostislav Boltyanskiy; John S. Wettlaufer; Eric R. Dufresne

    2013-10-11T23:59:59.000Z

    Johnson-Kendall-Robert (JKR) theory is the basis of modern contact mechanics. It describes how two deformable objects adhere together, driven by adhesion energy and opposed by elasticity. However, it does not include solid surface tension, which also opposes adhesion by acting to flatten the surface of soft solids. We tested JKR theory to see if solid surface tension affects indentation behaviour. Using confocal microscopy, we characterised the indentation of glass particles into soft, silicone substrates. While JKR theory held for particles larger than a critical, elastocapillary lengthscale, it failed for smaller particles. Instead, adhesion of small particles mimicked the adsorption of particles at a fluid interface, with a size-independent contact angle between the undeformed surface and the particle given by a generalised version of Young's law. A simple theory quantitatively captures this behaviour, and explains how solid surface tension dominates elasticity for small-scale indentation of soft materials.

  16. Avoiding the dangers of a soft-wall singularity

    E-Print Network [OSTI]

    Damien P. George; Marieke Postma

    2011-05-17T23:59:59.000Z

    We critically analyse the nature of the infrared singularity in Randall-Sundrum soft-wall models, where the extra dimension is dynamically compactified by the formation of a curvature singularity. Due to the Israel junction conditions, this singularity can only be shielded by a time-independent black-hole horizon if there is ghost matter on the UV brane. For this construction the spectrum of 4D states is shown to be similar to the original soft-wall case. We point out, however, that no such shielding is needed, as the singularity satisfies unitary boundary conditions.

  17. Nonlinearity 11 (1998) 445466. Printed in the UK PII: S0951-7715(98)86320-2 Study of Bogomol'nyi vortices on a disk

    E-Print Network [OSTI]

    Malfait, Nicole

    1998-01-01T23:59:59.000Z

    with a boundary. This may be applicable to the study of superconductivity. In a region with a boundary one

  18. Standards for Electronic and Print Communications DEFINITIONS

    E-Print Network [OSTI]

    , announcements, etc. Publications via electronic media (e.g. University Home Page items on the World Wide Web the wide range of print and electronic correspondence, research and other funding proposals, business forms, and various other print or word processed vehicles that are intrinsic to the everyday functioning of offices

  19. Mentoring Agreement Form Printed Name of

    E-Print Network [OSTI]

    Edwards, Paul N.

    Mentoring Agreement Form Printed Name of Student Mentee Term of Graduation Student ID Date Student email address Signature of Mentee Printed Name of Faculty Mentor Signature of Faculty Mentor Students are responsible for requesting appointments with mentors at least once each semester

  20. Poster Printing on Esmeralda GENERAL INFORMATION

    E-Print Network [OSTI]

    Ahlers, Guenter

    Poster Printing on Esmeralda 6.18.14 GENERAL INFORMATION · Location o The poster printer is located Poster Printer (HP Designjet z6100) [Esmeralda] DesignJet printer should be on. If red light is glowing PowerPoint file o From the File menu, choose Print. o Select Printer name: Esmeralda Direct o Click

  1. Content-adaptive Lenticular Prints James Tompkin

    E-Print Network [OSTI]

    Kautz, Jan

    to fixed-size lens arrays. We demonstrate our tech- nique using rendered simulations and by 3D printing.1 [Computer Graphics]: Hardware Architec- ture --Three-dimensional displays; Keywords: Lenticular displays, 3D printing. Links: DL PDF WEB 1 Introduction Displays that provide the illusion of three dimensions have

  2. Stealthy slugs and communicating corals: polyp withdrawal by an aggregating soft coral in response to injured neighbors

    E-Print Network [OSTI]

    Goddard, JHR

    2006-01-01T23:59:59.000Z

    capture rates of a soft coral: advantages of being a smallin a temperate soft coral. Ecology, 72: 1849–1866. McFadden,in the clonal soft coral, Alcyonium rudyi. Evolution, 51:

  3. Lecture 10. Shallow water equations and potential vorticity Geostrophy and hydrostatic balance gives us great intuition for how the ocean organizes itself, but

    E-Print Network [OSTI]

    Thompson, Andrew

    Lecture 10. Shallow water equations and potential vorticity Geostrophy and hydrostatic balance balance, which ignores vertical accelerations: p z = -0g. (104) We can then integrate this equation of the material derivative can be re-written as h t + h · (uh) = 0. (111) Equations (106) and (111

  4. The statistics of velocity fluctuations arising from a random distribution of point vortices: the speed of fluctuations and the diffusion coefficient

    E-Print Network [OSTI]

    Pierre-Henri Chavanis; Clément Sire

    2000-01-19T23:59:59.000Z

    This paper is devoted to a statistical analysis of the fluctuations of velocity and acceleration produced by a random distribution of point vortices in two-dimensional turbulence. We show that the velocity probability density function (p.d.f.) behaves in a manner which is intermediate between Gaussian and L\\'evy laws while the distribution of accelerations is governed by a Cauchy law. Our study accounts properly for a spectrum of circulations among the vortices. In the case of real vortices (with a finite core) we show analytically that the distribution of accelerations makes a smooth transition from Cauchy (for small fluctuations) to Gaussian (for large fluctuations) passing probably through an exponential tail. We introduce a function $T(V)$ which gives the typical duration of a velocity fluctuation $V$; we show that $T(V)$ behaves like $V$ and $V^{-1}$ for weak and large velocities respectively. These results have a simple physical interpretation in the nearest neighbor approximation and in Smoluchowski theory concerning the persistence of fluctuations. We discuss the analogies with respect to the fluctuations of the gravitational field in stellar systems. As an application of these results, we determine an approximate expression for the diffusion coefficient of point vortices. When applied to the context of freely decaying two-dimensional turbulence, the diffusion becomes anomalous and we establish a relationship $\

  5. One-dimensional Mott localization of quantum vortices in Josephson-junction arrays A. van Oudenaarden, B. van Leeuwen, M. P. M. Robbens, and J. E. Mooij

    E-Print Network [OSTI]

    van Oudenaarden, Alexander

    of superconducting islands. In a square array each island is weakly coupled to its four neighboring islands is analogous to vortices in type-II superconductors. An important difference however is the absence of a single Josephson junc- tion and 0 is the superconducting flux quantum. The other important energy scale

  6. Hacking Away at Soft Costs: 24-Hour Coding Event Focuses on Expanding...

    Office of Environmental Management (EM)

    Hacking Away at Soft Costs: 24-Hour Coding Event Focuses on Expanding Solar Market Hacking Away at Soft Costs: 24-Hour Coding Event Focuses on Expanding Solar Market May 7, 2014 -...

  7. Sensor network and soft sensor design for stable nonlinear dynamic systems

    E-Print Network [OSTI]

    Singh, Abhay Kumar

    2006-10-30T23:59:59.000Z

    is designing soft sensors for a given measurement structure. In case of high-dimensional systems, the application of conventional soft sensor or observer designs may not always be practical due to the high computational requirements or the resulting observers...

  8. A GPU-INSPIRED SOFT PROCESSOR FOR HIGH-THROUGHPUT ACCELERATION

    E-Print Network [OSTI]

    Steffan, J. Gregory

    Methodology 35 6.1 System Simulation . . . . . . . A GPU-INSPIRED SOFT PROCESSOR FOR HIGH-THROUGHPUT ACCELERATION by Jeffrey Richard Code Kingyens Code Kingyens #12;Abstract A GPU-Inspired Soft Processor for High-Throughput Acceleration Jeffrey

  9. Ultra-high Resolution Optics for EUV and Soft X-ray Inelastic Scattering

    E-Print Network [OSTI]

    Voronov, Dmitry L.

    2010-01-01T23:59:59.000Z

    16. Yu. Shvyd’ko, X-Ray Optics, Berlin: Springer-Verlag,Ultra-high Resolution Optics for EUV and Soft X-rayspectral resolution soft x-ray optics. Conventionally in the

  10. Infrared Observations of Soft GammaRay Repeaters

    E-Print Network [OSTI]

    Smith, Ian Andrew

    Infrared Observations of Soft Gamma­Ray Repeaters I. A. Smith Department of Space Physics been found for SGR 0525--66. This paper gives a brief overview of some recent and ongoing infrared observing programs. For a more detailed review article, see Smith (1997) [2]. INFRARED SPECTRA OF SGR 1806

  11. Training Guide PeopleSoft Procurement Card 9.0

    E-Print Network [OSTI]

    Training Guide PeopleSoft Procurement Card 9.0 Contents Using the Procurement Card Module: ...................................... 42 #12;#12;Training Guide Page 1 Using the Procurement Card Module In order to provide a paperless setup and W9's are no longer a requirement #12;Training Guide Page 2 Upon completion of this lesson, you

  12. Susceptibility of Commodity Systems and Software to Memory Soft Errors

    E-Print Network [OSTI]

    Riska, Alma

    Susceptibility of Commodity Systems and Software to Memory Soft Errors Alan Messer, Member, IEEE Abstract--It is widely understood that most system downtime is acounted for by programming errors transient errors in computer system hardware due to external factors, such as cosmic rays. This work

  13. Guest Editor's Introduction: Hardware-Soft'Ware Codesign

    E-Print Network [OSTI]

    De Micheli, Giovanni

    establishing an integmted design methodology for hardware and software systems that could be supported~ Guest Editor's Introduction: Hardware-Soft'Ware Codesign Giovanni De AficMli Stanfcxd the chip to the digital system level, and to CAD vendors who hope to extend their customer base

  14. Accessing biology's toolbox for the mesoscale biofabrication of soft matter

    E-Print Network [OSTI]

    Raghavan, Srinivasa

    Accessing biology's toolbox for the mesoscale biofabrication of soft matter Gregory F. Payne,bf James N. Culverag and William E. Bentley*ab Biology is a master of mesoscale science, possessing will provide a biocompatible approach to mesoscale science and yield products that are safe, sustainable

  15. Soft-collinear resummation in deeply virtual Compton scattering

    E-Print Network [OSTI]

    T. Altinoluk; B. Pire; L. Szymanowski; S. Wallon

    2012-06-14T23:59:59.000Z

    We derive an all order resummation formula for the deeply virtual Compton scattering (DVCS) amplitude, which takes into account soft gluon exchanges in the non-singlet quark coefficient function. We identify the ladder diagrams responsible in light-like gauge for [alphaS log^2 (x +/- xi)]^n contributions. The resummed series results in a simple closed expression.

  16. SIMULATING SOFT HANDOVER AND POWER CONTROL FOR ENHANCED UMTS

    E-Print Network [OSTI]

    Pitsillides, Andreas

    SIMULATING SOFT HANDOVER AND POWER CONTROL FOR ENHANCED UMTS V. Vassiliou, J. Antoniou, A handover algorithm for wide band CDMA based E-UMTS networks and the associated power control algorithm. The handover and power control algorithms have been developed and implemented in the framework of a system

  17. Soft Sensing and Optimal Power Control for Cognitive Radio

    E-Print Network [OSTI]

    Jafar, Syed A.

    1 Soft Sensing and Optimal Power Control for Cognitive Radio Sudhir Srinivasa and Syed Ali Jafar being present increases. We find that that power control that maximizes the SNR is binary, i transmit power constraint at the secondary radio, both the SNR and capacity optimal power control schemes

  18. Soft Sensing and Optimal Power Control for Cognitive Radio

    E-Print Network [OSTI]

    Jafar, Syed A.

    Soft Sensing and Optimal Power Control for Cognitive Radio Sudhir Srinivasa and Syed Ali Jafar being present increases. We find that power control that maximizes the SNR is binary, i implementation at the secondary transmitter. With binary detection and binary power control, minimizing

  19. Lensless imaging of nanoporous glass with soft X-rays

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Turner, Joshua J.; Nelson, Johanna; Huang, Xiaojing; Steinbrener, Jan; Jacobsen, Chris

    2013-06-01T23:59:59.000Z

    Coherent soft X-ray diffraction has been used to image nanoporous glass structure in two dimensions using different methods. The merit of the reconstructions was judged using a new method of Fourier phase correlation with a final, refined image. The porous structure was found to have a much larger average size then previously believed.

  20. Science, not Hollywood or Starbucks, is America's best soft power

    E-Print Network [OSTI]

    Zewail, Ahmed

    diplomacy with Muslim-majority countries, which would complement efforts to promote human rights. By Ahmed on building better and broader relations with the Muslim world and beyond. I felt the full force of this soft, appointed by President Obama as America's first science envoy to the Middle East, I embarked on a diplomatic

  1. Ultrasound-modulated optical tomography in soft biological tissues

    E-Print Network [OSTI]

    Sakadzic, Sava

    2007-09-17T23:59:59.000Z

    Ultrasound-modulated Optical Tomography in Soft Biological Tissues. (May 2006) Sava Sakad•zi¶c, B.S., University of Belgrade, Serbia and Montenegro; M.S., University of Belgrade, Serbia and Montenegro Chair of Advisory Committee: Dr. Lihong V. Wang Optical...

  2. Biomimetic ratcheting motion of a soft, slender, sessile gel

    E-Print Network [OSTI]

    Chaudhury, Manoj K.

    Biomimetic ratcheting motion of a soft, slender, sessile gel L. Mahadevan* , S. Daniel , and M. K, just as in a mechanical ratchet. Worms use a combination of unidirectional waves and the inequality­heal cycle in response to periodic unidirectional pulses producing a material ratchet (1, 4); snakes use

  3. Soft Tempest: Hidden Data Transmission Using Electromagnetic Emanations

    E-Print Network [OSTI]

    Kuhn, Markus

    Soft Tempest: Hidden Data Transmission Using Electromagnetic Emanations Markus G. Kuhn and Ross J, a trusted screen driver can display sensitive information using fonts which minimise the energy the data being processed. Known as compromising emanations or Tempest radiation, a code word for a U.S. gov

  4. Emission spectrum of soft massless states from heavy superstring

    E-Print Network [OSTI]

    Shoichi Kawamoto; Toshihiro Matsuo

    2013-06-05T23:59:59.000Z

    We calculate emission rates of various bosonic/fermionic soft massless states of open/closed superstring from an ensemble of a highly excited open/closed superstring in the flat background. The resulting spectrum shows thermal distributions at the Hagedorn temperature. We find greybody factors for each process and observe their relation to the ones from blackholes.

  5. Direct Imaging of Soft-Hard Interfaces Enabled by Graphene

    E-Print Network [OSTI]

    Frenklach, Michael

    Direct Imaging of Soft-Hard Interfaces Enabled by Graphene Zonghoon Lee,*, Ki-Joon Jeon,*, Albert. We show that graphene, a single atomic layer of sp2 -bonded carbon atoms, can be employed capability. Our findings reveal the unique potential of graphene as an ideal support film for atomic

  6. A Soft X-Ray Lag Detected in Centaurus A

    E-Print Network [OSTI]

    Tachibana, Yutaro; Ueda, Yoshihiro; Shidatsu, Megumi; Arimoto, Makoto; Yoshii, Taketoshi; Yatsu, Yoichi; Saito, Yoshihiko; Pike, Sean; Kawai, Nobuyuki

    2015-01-01T23:59:59.000Z

    We performed time lag analysis on the X-ray light curves of Centaurus A (Cen A) obtained by the Gas Slit Camera (GSC) aboard the Monitor of All-sky X-ray Image (MAXI) in three energy bands (2--4 keV, 4--10 keV, and 10--20 keV). We discovered a soft X-ray lag relative to higher energies (soft lag) on a time scale of days by employing the discrete correlation function (DCF) and the z-transformed discrete correlation function (ZDCF) method in a flare episode. A peak in the DCF and the ZDCF was observed at a soft lag of $\\sim 5$ days in 2--4 keV versus 4--10 keV and in 4--10 keV versus 10--20 keV, and $\\sim 10$ days in 2--4 keV versus 10--20 keV. We found it difficult to explain the observed X-ray variation with the one-zone synchrotron self-Compton (SSC) model, in which the soft lags reflect the different cooling times of the relativistic electrons in these three energy bands. Alternatively, if the X-ray variation was produced in a corona surrounding or along the inner part of the accretion disk, we can explain ...

  7. Digital microfluidics using soft lithography{ John Paul Urbanski,a

    E-Print Network [OSTI]

    Amarasinghe, Saman

    Digital microfluidics using soft lithography{ John Paul Urbanski,a William Thies,b Christopher published as an Advance Article on the web 29th November 2005 DOI: 10.1039/b510127a Although microfluidic software to drive the pumps, valves, and electrodes used to manipulate fluids in microfluidic devices

  8. Organic Embedded Architecture for Sustainable FPGA Soft-Core Processors

    E-Print Network [OSTI]

    DeMara, Ronald F.

    Organic Embedded Architecture for Sustainable FPGA Soft-Core Processors KENING ZHANG, JAAFAR ________________________________________________________________________ An Organic Embedded System (OES) architecture is developed for sustainable performance using SRAM-based Field. In addition to simulation, the proposed OES architecture synthesized from HDL was prototyped on Xilinx Virtex

  9. SoftSig: Software-Exposed Hardware Signatures for Code Analysis and Optimization

    E-Print Network [OSTI]

    Torrellas, Josep

    {torrellas, dahn2}@cs.uiuc.edu University of Washington luisceze@cs.washington.edu #12;Tuck et al, "Soft

  10. A Geometry-based Soft Shadow Volume Algorithm using Graphics Hardware

    E-Print Network [OSTI]

    . A soft shadow consists of an umbra, which is a region where no light can reach directly from the light

  11. Thesis for the degree of Doctor of Philosophy A Real-Time Soft Shadow

    E-Print Network [OSTI]

    Assarsson, Ulf

    the hard shadows (umbra). The second pass compensates to provide the softness (penum- bra). This is done

  12. Reply to 'Comment on 'Topological stability of the half-vortices in spinor exciton-polariton condensates''

    SciTech Connect (OSTI)

    Flayac, H.; Solnyshkov, D. D.; Malpuech, G.; Shelykh, I. A. [LASMEA, Clermont Universite-Universite Blaise Pascal, BP10448, 63000 Clermont-Ferrand (France); and LASMEA, CNRS, UMR 6602, 63177 Aubiere (France); Science Institute, University of Iceland, Dunhagi-3, IS-107 Reykjavik, Iceland and International Institute for Physics, Universidade Federal do Rio Grande do Norte (UFRN), Campus Universitario Lagoa Nova, CEP 59078-970 Natal, RN (Brazil)

    2010-09-15T23:59:59.000Z

    In a recent work [H. Flayac, I. A. Shelykh, D. D. Solnyshkov, and G. Malpuech, Phys. Rev. B 81, 045318 (2010)], we have analyzed the effect of the TE-TM splitting on the stability of the exciton-polariton vortex states. We considered classical vortex solutions having cylindrical symmetry and we found that the so-called half-vortex states [Yu. G. Rubo, Phys. Rev. Lett. 99, 106401 (2007)] are not solutions of the stationary Gross-Pitaevskii equation. In their Comment [Phys. Rev. B 82, 127301 (2010)], Toledo Solano and Rubo claim that this conclusion is misleading and claim to demonstrate the existence of static half-vortices in an exciton-polariton condensate in the presence of TE-TM splitting. In this Reply we explain why this assertion is not demonstrated satisfactorily.

  13. Soft X-ray spectral variability of AM Herculis

    E-Print Network [OSTI]

    K. Beuermann; E. El Kholy; K. Reinsch

    2008-02-19T23:59:59.000Z

    Polars (AM Herculis binaries) are a prominent class of bright soft X-ray sources, many of which were discovered with ROSAT. We present a homogenous analysis of all the pointed ROSAT PSPC observations of polars subdivided into two papers that discuss the prototype polar AM Her in detail and summarize the class properties of all other polars. We derive the high-state soft X-ray flux and short-term spectral variability of AM Her using a new detector response matrix and a confirmed flux calibration of the ROSAT PSPC below 0.28 keV. The best-fit mean single-blackbody temperature and integrated bright-phase energy flux of AM Her in its April 1991 high state are 27.2 +/- 1.0 eV and (2.6 +/- 0.6) x 10^-9 erg cm^-2s^-1, respectively. The total blackbody flux of a multi-temperature model that fits both the soft X-ray and the fluctuating far-ultraviolet components is Fbb = (4.5 +/- 1.5) x 10^-9 erg cm^-2s^-1. The total accretion luminosity at a distance of 80 pc, Lbb = (2.1 +/- 0.7) x 10^33 erg s-1, implies an accretion rate of Mdot = (2.4 +/- 0.8) x 10^-10 Msun yr^-1 for an 0.78 Msun white dwarf. The soft X-ray flux displays significant variability on time scales down to 200 ms. Correlated spectral and count-rate variations are seen in flares on time scales down to 1 s, demonstrating the heating and cooling associated with individual accretion events. Our spectral and temporal analysis provides direct evidence for the blobby accretion model and suggests a connection between the soft X-ray and the fluctuating far-ultraviolet components.

  14. Soft-Decision-and-Forward Protocol for Cooperative Communication Networks Based on Alamouti Code

    E-Print Network [OSTI]

    No, Jong-Seon

    protocol called soft-decision-and- forward (SDF) is introduced. SDF protocol exploits the soft decision with low decoding complexity are proposed. From simulations, it can be seen that SDF protocol outperforms protocol called soft-decision- and-forward (SDF) is introduced. Unlike AF and DF protocols, SDF protocol

  15. Soft Tissue Visualization Using a Highly Efficient Megavoltage Cone Beam CT Imaging System

    E-Print Network [OSTI]

    Pouliot, Jean

    Soft Tissue Visualization Using a Highly Efficient Megavoltage Cone Beam CT Imaging System Farhad A developed an imaging system that is optimized for MV and can acquire Megavoltage CBCT images containing soft through the detector. #12;The ability of an x-ray imaging system to differentiate soft tissues is affected

  16. Effect of Soft Handoffs on the Downlink Admission Region for CDMA Multimedia Cellular Systems

    E-Print Network [OSTI]

    Kumar, Anurag

    Effect of Soft Handoffs on the Downlink Admission Region for CDMA Multimedia Cellular Systems normally expands for a cellular system using soft handoffs. We propose to look at how the soft handoff 560012 e­mail: munish, anurag@ece.iisc.ernet.in ABSTRACT We consider a CDMA based cellular system

  17. A Memory Soft Error Measurement on Production Systems Xin Li Kai Shen Michael C. Huang

    E-Print Network [OSTI]

    Shen, Kai

    A Memory Soft Error Measurement on Production Systems Xin Li Kai Shen Michael C. Huang University and dealing with these soft (or transient) errors is impor- tant for system reliability. Several earlier for memory soft error measurement on production systems where performance impact on existing running ap

  18. Systemic Test and Evaluation of a Hard+Soft Information Fusion Framework

    E-Print Network [OSTI]

    Shapiro, Stuart C.

    Systemic Test and Evaluation of a Hard+Soft Information Fusion Framework Challenges and Current". Developed on this program is a fully integrated research prototype hard+soft fusion system in which raw hard with the research issues in developing a baseline hard+soft fusion system, while identifying a number of design

  19. Hyperbolicity in multi-dimensional Hamiltonian with applications to soft billiards

    E-Print Network [OSTI]

    Bálint, Péter

    Hyperbolicity in multi-dimensional Hamiltonian systems with applications to soft billiards P. B systems. On the one hand, our motivation comes from multi-dimensional soft billiard systems, a situation to be applicable to a variety of situations. As an application we investigate soft billiards, that is, replace

  20. Scaling Soft Processor Systems Martin Labrecque, Peter Yiannacouras, and J. Gregory Steffan

    E-Print Network [OSTI]

    Steffan, J. Gregory

    Scaling Soft Processor Systems Martin Labrecque, Peter Yiannacouras, and J. Gregory Steffan of Toronto Abstract As FPGA-based systems including soft-processors be- come increasingly common we the performance of soft systems, focussing on the organization of processors and caches connected to a single off

  1. A Memory Soft Error Measurement on Production Systems # Xin Li Kai Shen Michael C. Huang

    E-Print Network [OSTI]

    Shen, Kai

    A Memory Soft Error Measurement on Production Systems # Xin Li Kai Shen Michael C. Huang University and dealing with these soft (or transient) errors is impor­ tant for system reliability. Several earlier for memory soft error measurement on production systems where performance impact on existing running ap

  2. Combined Scheduling of Hard and Soft Real-Time Tasks in Multiprocessor Systems

    E-Print Network [OSTI]

    Manimaran, Govindarasu

    Combined Scheduling of Hard and Soft Real-Time Tasks in Multiprocessor Systems B. Duwairi and G to support combined scheduling of hard and soft real-time tasks in such systems, in which multiprocessors with periodic soft tasks. Scheduling any of these task combinations in multiprocessor systems is a #12

  3. An Energy-Aware Fault Tolerant Scheduling Framework for Soft Error Resilient Cloud Computing Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    . INTRODUCTION Soft error resiliency has become a major concern for modern computing systems as CMOS technology systems [8, 9]. Although it is impossible to entirely eliminate spontaneous soft errors, they canAn Energy-Aware Fault Tolerant Scheduling Framework for Soft Error Resilient Cloud Computing

  4. Measurement of the Hydrophobic Force in a Soft Matter System Supporting Information Supporting Information for

    E-Print Network [OSTI]

    Chan, Derek Y C

    Measurement of the Hydrophobic Force in a Soft Matter System ­ Supporting Information 1 Supporting Information for "Measurement of the Hydrophobic Force in a Soft Matter System" Rico F. Tabor*1 , Chu Wu2.tabor@monash.edu and d.chan@unimelb.edu.au #12;Measurement of the Hydrophobic Force in a Soft Matter System ­ Supporting

  5. A Scalable Soft Spot Analysis Methodology for Compound Noise Effects in Nano-meter Circuits

    E-Print Network [OSTI]

    California at San Diego, University of

    A Scalable Soft Spot Analysis Methodology for Compound Noise Effects in Nano-meter Circuits Chong methodology to study the vulnerability of digital ICs exposed to nano-meter noise and transient soft errors. First, we define "softness" as an important characteristic to gauge system vulnerability. Then several

  6. Evaluating Six Soft Approaches Lene Srensen* and Ren Victor Valqui Vidal

    E-Print Network [OSTI]

    Development and Analysis, Strategic Choice Approach and Soft Systems Methodology. Evaluations of each to traditional OR (see Rosenhead, 1989). Soft OR methodologies are characteristic in terms of supporting of OR as a decision support discipline see Keys (1995). There exists several soft OR methodologies (see Rosenhead

  7. Spatio-temporal availability of soft mast in clearcuts in the Southern Appalachians

    E-Print Network [OSTI]

    Mitchell, Mike

    Spatio-temporal availability of soft mast in clearcuts in the Southern Appalachians Melissa J availability of soft mast though time is not fully understood. We tested a theoretical model of temporal availability of soft mast in clearcuts using empirical data on percent cover and berry production

  8. Soft Bacterial Polyester-Based Shape Memory Nanocomposites Featuring Reconfigurable Nanostructure

    E-Print Network [OSTI]

    Mather, Patrick T.

    Soft Bacterial Polyester-Based Shape Memory Nanocomposites Featuring Reconfigurable Nanostructure; published online 13 December 2011 DOI: 10.1002/polb.23021 ABSTRACT: In this work, a novel soft shape memory even in the fixed state. Taking advantage of the shape memory ability as well as the softness

  9. A microfluidic microbial fuel cell fabricated by soft lithography Fang Qian a,b,

    E-Print Network [OSTI]

    A microfluidic microbial fuel cell fabricated by soft lithography Fang Qian a,b, , Zhen He c microfluidic microbial fuel cell (MFC) platform built by soft-lithography tech- niques. The MFC design includes a unique sub-5 lL polydimethylsiloxane soft chamber featuring carbon cloth electrodes and microfluidic

  10. GENTLE IONISATION AND VIOLENT BREAK-UP OF MOLECULES USING SOFT X-RAYS

    E-Print Network [OSTI]

    Bapat, Bhas

    GENTLE IONISATION AND VIOLENT BREAK-UP OF MOLECULES USING SOFT X-RAYS Bhas Bapat PRL, Ahmedabad RRCAT Indore, June 2012 BHAS BAPAT (PRL, AHMEDABAD) BREAK-UP OF MOLECULES USING SOFT X-RAYS RRCAT INDORE INVESTIGATED RECENT RESULTS BHAS BAPAT (PRL, AHMEDABAD) BREAK-UP OF MOLECULES USING SOFT X-RAYS RRCAT INDORE

  11. Soft budget constraints, transition and ...nancial Mathias Dewatripont and Grard Roland*

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    Soft budget constraints, transition and ...nancial systems Mathias Dewatripont and Gérard Roland thank Werner Güth for extensive comments on a ...rst draft. 1 #12;1 Introduction "Soft budget of the concept of soft budget constraints is now also acknowledged beyond socialist economies, due to well known

  12. J.M. Carroll -"Soft versus hard: The essential tension?" 1 Soft versus Hard: The essential tension

    E-Print Network [OSTI]

    Carroll, John M.

    of endeavor tend to invest more energy in this. Like many longtime participants in the field of human the differences between soft and hard science have been, and remain, the most significant risk to HCI emerging as a deliberately interdisciplinary area at the periphery of computer science. It was created by software engineers

  13. Heat sinking for printed circuitry

    DOE Patents [OSTI]

    Wilson, S.K.; Richardson, G.; Pinkerton, A.L.

    1984-09-11T23:59:59.000Z

    A flat pak or other solid-state device mounted on a printed circuit board directly over a hole extends therethrough so that the bottom of the pak or device extends beyond the bottom of the circuit board. A heat sink disposed beneath the circuit board contacts the bottom of the pak or device and provides direct heat sinking thereto. Pressure may be applied to the top of the pak or device to assure good mechanical and thermal contact with the heat sink.

  14. Gas cushion control of OVJP print head position

    DOE Patents [OSTI]

    Forrest, Stephen R

    2014-10-07T23:59:59.000Z

    An OVJP apparatus and method for applying organic vapor or other flowable material to a substrate using a printing head mechanism in which the print head spacing from the substrate is controllable using a cushion of air or other gas applied between the print head and substrate. The print head is mounted for translational movement towards and away from the substrate and is biased toward the substrate by springs or other means. A gas cushion feed assembly supplies a gas under pressure between the print head and substrate which opposes the biasing of the print head toward the substrate so as to form a space between the print head and substrate. By controlling the pressure of gas supplied, the print head separation from the substrate can be precisely controlled.

  15. eSales Interactive Mapping -Viewing and Printing Introduction

    E-Print Network [OSTI]

    eSales Interactive Mapping - Viewing and Printing Introduction Our eSales system includes an integrated interactive map facility. This allows you to view and print maps for all lots on offer. Various

  16. advanced packaging technology: Topics by E-print Network

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

    David Smukowski, Sensors in Motion Embedded Actuation and Sensing Via Multi-Material 3D Printing.m. 3D Printing Multi-Functionality: Mec Materials for 2.5D and 3D Packaging Systems...

  17. advanced packaging technologies: Topics by E-print Network

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

    David Smukowski, Sensors in Motion Embedded Actuation and Sensing Via Multi-Material 3D Printing.m. 3D Printing Multi-Functionality: Mec Materials for 2.5D and 3D Packaging Systems...

  18. actinobacillus pleuropneumonia part: Topics by E-print Network

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

    was performed to understand the correlation between printing parameters in the FDM 3D printing process, and the force required to remove a part from the build platform of a 3D...

  19. abnormal 3-d mri: Topics by E-print Network

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

    was performed to understand the correlation between printing parameters in the FDM 3D printing process, and the force required to remove a part from the build platform of a 3D...

  20. axial 3-d pet: Topics by E-print Network

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

    was performed to understand the correlation between printing parameters in the FDM 3D printing process, and the force required to remove a part from the build platform of a 3D...

  1. advanced electronic packages: Topics by E-print Network

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

    David Smukowski, Sensors in Motion Embedded Actuation and Sensing Via Multi-Material 3D Printing.m. 3D Printing Multi-Functionality: Mec Materials for 2.5D and 3D Packaging Systems...

  2. antimyosin fab imaging: Topics by E-print Network

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

    simultaneously. Testing procedures: Demonstrate de Lijser, Peter 14 TCAUP FabLab 3D PRINTING ORDER FORM Engineering Websites Summary: TCAUP FabLab 3D PRINTING ORDER FORM: UNIQ...

  3. auslese von 3d: Topics by E-print Network

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

    was performed to understand the correlation between printing parameters in the FDM 3D printing process, and the force required to remove a part from the build platform of a 3D...

  4. aeneus fab larvae: Topics by E-print Network

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

    simultaneously. Testing procedures: Demonstrate de Lijser, Peter 18 TCAUP FabLab 3D PRINTING ORDER FORM Engineering Websites Summary: TCAUP FabLab 3D PRINTING ORDER FORM: UNIQ...

  5. anthropomorphic models pt: Topics by E-print Network

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

    -driven, anthropomorphic robotic hand. The prototyping process makes the most of 3D printing technology, and takes@cs.washington.edu Fig. 1. The 3D-printed 20-DOF...

  6. autostereoscopic 3d display: Topics by E-print Network

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

    or restrict themselves to light dif- fusion in volumes. We use multi-material 3D printing to fabricate objects Additional Key Words and Phrases: 3D printing, optical fibers...

  7. Characterizing tensile loading responses of 3D printed samples

    E-Print Network [OSTI]

    Haid, Christopher M

    2014-01-01T23:59:59.000Z

    An experimental study was performed to characterize the loading response of samples manufactured through 3D printing. Tensile testing was performed on a number of 3D printed samples created through Fused Filament Fabrication ...

  8. Mechanical testing of rapid-prototyping refractory ceramic print media

    E-Print Network [OSTI]

    Martin, Rachel (Rachel M.)

    2013-01-01T23:59:59.000Z

    Additively manufactured (3D-printed) refractory alumina-silica ceramics were mechanically tested to ascertain their ultimate tensile strengths and observed to determine their dimensional consistency over the printing and ...

  9. aperture radar 3d: Topics by E-print Network

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

    study was performed to understand the correlation between printing parameters in the FDM 3D printing process, and the force required to remove a part from the build platform of a...

  10. accuracy 3d quantum: Topics by E-print Network

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

    study was performed to understand the correlation between printing parameters in the FDM 3D printing process, and the force required to remove a part from the build platform of a...

  11. Three-dimensionally printed biological machines powered by skeletal muscle

    E-Print Network [OSTI]

    Bashir, Rashid

    in animals, as a con- tractile power source. Here, we report the development of 3D printed hydrogel "bio-bots were optimized using stereolithographic 3D printing, and the ef- fect of collagen I and fibrin

  12. Reactive binders for metal parts produced by Three Dimensional Printing

    E-Print Network [OSTI]

    Yoo, Helen Jean

    1997-01-01T23:59:59.000Z

    Three Dimensional Printing (3DP) is a solid free form fabrication process which enables the construction of parts directly from computer-aided design (CAD) models. In the current process, metal parts are produced by printing ...

  13. author research productivity: Topics by E-print Network

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

    2007 -Forest industry production Authorities Renewable Energy Websites Summary: FINLAND SOURCES 2007 - Forest industry production Print Home Finland Government Authorities...

  14. archipelago sea finland: Topics by E-print Network

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

    2007 -Forest industry production Authorities Renewable Energy Websites Summary: FINLAND SOURCES 2007 - Forest industry production Print Home Finland Government Authorities...

  15. acid hydrogel carrying: Topics by E-print Network

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

    Materials Science Websites Summary: Keywords: Mesenchymal stem cells Microcontact printing Microenvironment Differentiation Polyacrylamide by studying cells adherent to...

  16. WIDEBAND SLOT AND PRINTED ANTENNAS ATEF Z. ELSHERBENI

    E-Print Network [OSTI]

    Elsherbeni, Atef Z.

    with tuning stubs, bowtie slot antennas with tapered tuning stubs, and microstrip-fed printed bowtie antennas

  17. A QuickStart Guide to printing a

    E-Print Network [OSTI]

    A QuickStart Guide to printing a 3D model starting from a block of bytes Bridget CarragherStart Guide to printing a 3D model starting from a block of bytes This is currently a three step process. (1 and selecting a new size (of 3 inches for example). Once you have done this, choose Print from the File menu

  18. 3D Printing of Functional and Biological Materials

    E-Print Network [OSTI]

    ! 3D Printing of Functional and Biological Materials Jennifer A. Lewis Wyss Professor)! Multimaterial 3D printing ! #12;3D antennas! Li ion microbatteries! Lightweight microlattices!Flexible sensors! 3D Printing of Integrated Electronic Devices ! #12;20 nm average , 5 ­ 50 nm

  19. A quality map of transfer printing Matthew B. Tucker,1

    E-Print Network [OSTI]

    Li, Teng

    - nique to enable a low-cost and scalable roll-to-roll printing process of flexible devices.13­19 Although printing toward a roll-to-roll printing process of flexible devices hinges upon the understanding be fabricated on compliant organic substrates polymers, elastomers , result- ing in lightweight, rugged

  20. Infrared Singularities and Soft Gluon Resummation with Massive Partons

    E-Print Network [OSTI]

    A. Ferroglia; M. Neubert; B. D. Pecjak; L. L. Yang

    2010-06-24T23:59:59.000Z

    Infrared divergences of QCD scattering amplitudes can be derived from an anomalous dimension matrix, which is also an essential ingredient for the resummation of large logarithms due to soft gluon emissions. We report a recent analytical calculation of the anomalous dimension matrix with both massless and massive partons at two-loop level, which describes the two-loop infrared singularities of any scattering amplitudes with an arbitrary number of massless and massive partons, and also enables soft gluon resummation at next-to-next-to-leading-logarithmic order. As an application, we calculate the infrared poles in the q qbar -> t tbar and gg -> t tbar scattering amplitudes at two-loop order.

  1. Crystal phases of soft spheres systems in a slab geometry

    E-Print Network [OSTI]

    Moritz Antlanger; Günther Doppelbauer; Martial Mazars; Gerhard Kahl

    2014-01-20T23:59:59.000Z

    We have identified the ground state configurations of soft particles (interacting via inverse power potentials) confined between two hard, impenetrable walls. To this end we have used a highly reliable optimization scheme at {\\it vanishing} temperature while varying the wall separation over a representative range. Apart from the expected layered triangular and square structures (which are compatible with the three dimensional bulk fcc lattice), we have identified a cascade of highly complex intermediate structures. Taking benefit of the general scaling properties of inverse power potentials, we could identify -- for a given softness value -- one single master curve which relates the energy to the wall separation, irrespective of the density of the system. Via extensive Monte Carlo simulations, we have performed closer investigations of these intermediate structures at {\\it finite} temperature: we could provide evidence to which extent these particle arrangements remain stable over a relatively large temperature range.

  2. Higher-Dimensional Supertranslations and Weinberg's Soft Graviton Theorem

    E-Print Network [OSTI]

    Kapec, Daniel; Pasterski, Sabrina; Strominger, Andrew

    2015-01-01T23:59:59.000Z

    Asymptotic symmetries of theories with gravity in d=2m+2 spacetime dimensions are reconsidered for m>1 in light of recent results concerning d=4 BMS symmetries. Weinberg's soft graviton theorem in 2m+2 dimensions is re-expressed as a Ward identity for the gravitational S-matrix. The corresponding asymptotic symmetries are identified with 2m+2-dimensional supertranslations. An alternate derivation of these asymptotic symmetries as diffeomorphisms which preserve finite-energy boundary conditions at null infinity and act non-trivially on physical data is given. Our results differ from those of previous analyses whose stronger boundary conditions precluded supertranslations for d>4. We find for all even d that supertranslation symmetry is spontaneously broken in the conventional vacuum and identify soft gravitons as the corresponding Goldstone bosons.

  3. Soft-Decision-Driven Channel Estimation for Pipelined Turbo Receivers

    E-Print Network [OSTI]

    Yoon, Daejung

    2011-01-01T23:59:59.000Z

    We consider channel estimation specific to turbo equalization for multiple-input multiple-output (MIMO) wireless communication. We develop a soft-decision-driven sequential algorithm geared to the pipelined turbo equalizer architecture operating on orthogonal frequency division multiplexing (OFDM) symbols. One interesting feature of the pipelined turbo equalizer is that multiple soft-decisions become available at various processing stages. A tricky issue is that these multiple decisions from different pipeline stages have varying levels of reliability. This paper establishes an effective strategy for the channel estimator to track the target channel, while dealing with observation sets with different qualities. The resulting algorithm is basically a linear sequential estimation algorithm and, as such, is Kalman-based in nature. The main difference here, however, is that the proposed algorithm employs puncturing on observation samples to effectively deal with the inherent correlation among the multiple demappe...

  4. Soft evolution of multi-jet final states

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gerwick, Erik; Schumann, Steffen; Höche, Stefan; Marzani, Simone

    2015-02-01T23:59:59.000Z

    We present a new framework for computing resummed and matched distributions in processes with many hard QCD jets. The intricate color structure of soft gluon emission at large angles renders resummed calculations highly non-trivial in this case. We automate all ingredients necessary for the color evolution of the soft function at next-to-leading-logarithmic accuracy, namely the selection of the color bases and the projections of color operators and Born amplitudes onto those bases. Explicit results for all QCD processes with up to 2 ? 5 partons are given. We also devise a new tree-level matching scheme for resummed calculations which exploitsmore »a quasi-local subtraction based on the Catani-Seymour dipole formalism. We implement both resummation and matching in the Sherpa event generator. As a proof of concept, we compute the resummed and matched transverse-thrust distribution for hadronic collisions.« less

  5. Scanning acoustic microscopy for mapping the microstructure of soft materials

    E-Print Network [OSTI]

    N. G. Parker; M. J. W. Povey

    2009-04-30T23:59:59.000Z

    Acoustics provides a powerful modality with which to 'see' the mechanical properties of a wide range of elastic materials. It is particularly adept at probing soft materials where excellent contrast and propagation distance can be achieved. We have constructed a scanning acoustic microscope capable of mapping the microstructure of such materials. We review the general principles of scanning acoustic microscopy and present new examples of its application in imaging biological matter, industrial materials and particulate systems.

  6. The Soft X-ray Spectromicroscopy Beamline at SSRF

    SciTech Connect (OSTI)

    Guo, Z.; Tai, R.; Wand, Y.; Yan, R.; Chen, M.; Wu, Y.; Chen, J.; Xue, S.; Xu, H. [Shanghai Synchrotron Radiation Facility, Shanghai Institute of Appled Physics, CAS 239 Zhang Heng Road, Pudong District, Shanghai (China)

    2011-09-09T23:59:59.000Z

    Commissioning of the soft x-ray spectromicroscopy beanmline at SSRF was formally started on Dec 26, 2008. Beamline performance has reached or surpassed the designing goals according to the measurements by domestic experts, especially for its high energy resolution and high spatial resolution. Since its first operation by users on May 6, 2009, tens of experiments have been conducted, and some preliminary exciting results have been acquired.

  7. PrintCentreContact the Print Centre for assistance with all your document needs.

    E-Print Network [OSTI]

    Brownstone, Rob

    PrintCentreContact the Print Centre for assistance with all your document needs. Dalhousie We-campus deliveries · Management program for campus multifunction devices (MFDs) We also offer printer and copier Science (BCSc), Bachelor of Informatics (BInf), Bachelor of Management (BMgt) and Bachelor of Science (BSc

  8. Understanding and developing capabilities for large area and continuous micro contact printing

    E-Print Network [OSTI]

    Goel, Ambika

    2007-01-01T23:59:59.000Z

    Micro contact printing is a high spatial resolution-patterning tool that can be used for printing on large and non-planar surfaces because of which it has begun to find important applications in printed organic electronics ...

  9. Print-and-Peel Fabrication for Microfluidics: What’s in it for Biomedical Applications?

    E-Print Network [OSTI]

    Thomas, Marlon S.; Millare, Brent; Clift, Joseph M.; Bao, Duoduo; Hong, Connie; Vullev, Valentine I.

    2010-01-01T23:59:59.000Z

    of direct three-dimensional (3D) printing of masters using ahave the capability for 3D printing, and hence, for directly3D elements allow for achieving fea- tures, demonstrated with solid-object printing,

  10. Print-and-Peel Fabrication for Microfluidics: What’s in it for Biomedical Applications?

    E-Print Network [OSTI]

    Thomas, Marlon S.; Millare, Brent; Clift, Joseph M.; Bao, Duoduo; Hong, Connie; Vullev, Valentine I.

    2010-01-01T23:59:59.000Z

    have the capability for 3D printing, and hence, for directlyof direct three-dimensional (3D) printing of masters using a3D elements allow for achieving fea- tures, demonstrated with solid-object printing,

  11. School of Art & Design 3D Printing of Relief Forms onto Ceramic Tiles

    E-Print Network [OSTI]

    Evans, Paul

    School of Art & Design 3D Printing of Relief Forms onto Ceramic Tiles Lead: Lharne Shaw 3D printing tile production. It will also assess the feasibility of introducing a 3D slip printing system into both

  12. Improvement of 3D Printing Resolution by the Development of Shrinkable Materials

    E-Print Network [OSTI]

    Chia, Helena

    2014-01-01T23:59:59.000Z

    learned a lot about 3D printing and myself in this processderived microstructures by 3D printing: bio-and structuralScaffold development using 3D printing with a starch-based

  13. Evaluation of PC-ISO for customized, 3D printed, gynecologic 192Ir HDR brachytherapy applicators

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    A, Iuliano L, Violante MG. 3D printing technique applied toTengg-Kobligk H, et al. 3D printing based on imaging data:biocompatible, sterilizable 3D printing material, and its

  14. Improvement of 3D Printing Resolution by the Development of Shrinkable Materials

    E-Print Network [OSTI]

    Chia, Helena

    2014-01-01T23:59:59.000Z

    derived microstructures by 3D printing: bio-and structuralScaffold development using 3D printing with a starch-basedderived microstructures by 3D printing: bio-and structural

  15. In Situ X-Ray Scattering Helps Optimize Printed Solar Cells

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

    In Situ X-Ray Scattering Helps Optimize Printed Solar Cells In Situ X-Ray Scattering Helps Optimize Printed Solar Cells Print Wednesday, 25 February 2015 00:00 Plastic solar cells...

  16. Onset of wavy vortices in the finite-lengjth G~~~tt~~Tay~~r problem W. S. Edwards," S. R. Beane,b) and S. Varmab)

    E-Print Network [OSTI]

    Texas at Austin. University of

    Onset of wavy vortices in the finite-lengjth G~~~tt~~Tay~~r problem W. S. Edwards," S. R. Beane

  17. Statistical Performance Evaluation Of Soft Seat Pressure Relief Valves

    SciTech Connect (OSTI)

    Harris, Stephen P.; Gross, Robert E.

    2013-03-26T23:59:59.000Z

    Risk-based inspection methods enable estimation of the probability of failure on demand for spring-operated pressure relief valves at the United States Department of Energy's Savannah River Site in Aiken, South Carolina. This paper presents a statistical performance evaluation of soft seat spring operated pressure relief valves. These pressure relief valves are typically smaller and of lower cost than hard seat (metal to metal) pressure relief valves and can provide substantial cost savings in fluid service applications (air, gas, liquid, and steam) providing that probability of failure on demand (the probability that the pressure relief valve fails to perform its intended safety function during a potentially dangerous over pressurization) is at least as good as that for hard seat valves. The research in this paper shows that the proportion of soft seat spring operated pressure relief valves failing is the same or less than that of hard seat valves, and that for failed valves, soft seat valves typically have failure ratios of proof test pressure to set pressure less than that of hard seat valves.

  18. Soft X-ray Pulsations in Solar Flares

    E-Print Network [OSTI]

    Simões, Paulo J A; Fletcher, Lyndsay

    2014-01-01T23:59:59.000Z

    The soft X-ray emissions of solar flares come mainly from the bright coronal loops at the highest temperatures normally achieved in the flare process. Their ubiquity has led to their use as a standard measure of flare occurrence and energy, although the bulk of the total flare energy goes elsewhere. Recently Dolla et al. (2012) noted quasi-periodic pulsations (QPP) in the soft X-ray signature of the X-class flare SOL2011-02-15, as observed by the standard photometric data from the GOES (Geostationary Operational Environmental Satellite) spacecraft. We analyze the suitability of the GOES data for this kind of analysis and find them to be generally valuable after Sept. 2010 (GOES-15). We then extend Dolla et al. results to a list of X-class flares from Cycle 24, and show that most of them display QPP in the impulsive phase. During the impulsive phase the footpoints of the newly-forming flare loops may also contribute to the observed soft X-ray variations. The QPP show up cleanly in both channels of the GOES dat...

  19. Soft x-ray diagnostics for pulsed power machines

    SciTech Connect (OSTI)

    Idzorek, G.C.; Coulter, W.L.; Walsh, P.J.; Montoya, R.R.

    1995-08-01T23:59:59.000Z

    A variety of soft x-ray diagnostics are being fielded on the Los Alamos National Laboratory Pegasus and Procyon pulsed power systems and also being fielded on joint US/Russian magnetized target fusion experiments known as MAGO (Magnitoye Obzhatiye). The authors have designed a low-cost modular photoemissive detector designated the XRD-96 that uses commercial 1100 series aluminum for the photocathode. In addition to photocathode detectors a number of designs using solid state silicon photodiodes have been designed and fielded. They also present a soft x-ray time-integrated pinhole camera system that uses standard type TMAX-400 photographic film that obviates the need for expensive and no longer produced zero-overcoat soft x-ray emulsion film. In a typical experiment the desired spectral energy cuts, signal intensity levels, and desired field of view will determine diagnostic geometry and x-ray filters selected. The authors have developed several computer codes to assist in the diagnostic design process and data deconvolution. Examples of the diagnostic design process and data analysis for a typical pulsed power experiment are presented.

  20. amoxicillin: Topics by E-print Network

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

    to carefully balance potential risks Ral J. Andrade; Paul M. Tulkens 14 Printed in Croatia CiteSeer Summary: The incidence of Salmonella in dogs was investigated to assess the...

  1. albumen: Topics by E-print Network

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

    1840-1895. Bibliography: p. 1. Photography--Printing processes. 2. Albumen James M. Reilly; For Linda; James M; Henry Peach Robinson 1840-01-01 5 TheJournalofExperimentalBiology...

  2. Digital imaging tracing technology for print media

    E-Print Network [OSTI]

    Milne, Stewart William

    1997-01-01T23:59:59.000Z

    This thesis examines and analyzes the existing state of digital technology use in print media and the attitudes of those using the technology to develop a technology that would help prevent the unethical manipulation of images in mass media...

  3. arkansas: Topics by E-print Network

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

    conversations with volunteer amateur radio operators, members of the print and broadcast media in Ft. Smith to the U.S. Congress, to local government officials in Ft. Smith and...

  4. Printed on recycled paper. 2013 Cornell Waste

    E-Print Network [OSTI]

    Chen, Tsuhan

    management by focusing University resources and capabilities on this pressing economic, environmental of waste generation and composition, waste reduction, risk management, environmental equity and publicPrinted on recycled paper. 2013 Cornell Waste Management Institute CWMI is a program

  5. Paper Tracking Number: 689 System Design Tradeoff for Supporting Soft Handoff for Packet Data Calls using cdma2000 Cellular Simulator

    E-Print Network [OSTI]

    Paper Tracking Number: 689 1 System Design Tradeoff for Supporting Soft Handoff for Packet Data networks. In this paper, we perform system design trade-off study for supporting soft handoff for packet soft handoff based on system and user conditions. Index Terms--cdma2000, cellular simulator, soft

  6. Proceedings of the USENIX Technical Conference, June, 2000. Journaling versus Soft Updates: Asynchronous Meta-data Protection in File

    E-Print Network [OSTI]

    Ganger, Greg

    and Soft Updates. Journaling systems use an auxiliary log to record meta-data operations and Soft Updates this synchronicity requirement is relaxed can journaling systems approach the performance of systems like Soft Updates (which also relaxes this requirement). Our asynchronous journaling and Soft Updates systems

  7. Diverse Soft Real-Time Processing in an Integrated System Caixue Lin, Tim Kaldewey, Anna Povzner, and Scott A. Brandt

    E-Print Network [OSTI]

    Brandt, Scott A.

    Diverse Soft Real-Time Processing in an Integrated System Caixue Lin, Tim Kaldewey, Anna Povzner,kalt,apovzner,scott}@cs.ucsc.edu Abstract The simple notion of soft real-time processing has frac- tured into a spectrum of diverse soft developed for each of these types, but these are essentially point solutions in the space of soft real

  8. Review: 3D Printing: Social and Cultural Trajectories Symposium -3D Printing Industry http://3dprintingindustry.com/2013/12/11/review-3d-printing-social-cultural-trajectories-symposium/[12/12/2013 11:25:00 AM

    E-Print Network [OSTI]

    Review: 3D Printing: Social and Cultural Trajectories Symposium - 3D Printing Industry http://3dprintingindustry.com/2013/12/11/review-3d-printing-social-cultural-trajectories-symposium/[12/12/2013 11:25:00 AM] Review: 3D Printing: Social and Cultural Trajectories Symposium BY ANGELA DALY & DARCY ALLEN ON WED

  9. Printed Name: Page 1 of 6

    E-Print Network [OSTI]

    Walba, David

    print your name on each page of the exam. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6Printed Name: Page 1 of 6 CHEM 3311-100, Fall 2013 Professor Walba First Hour Exam September 24: ________________________________ Recitation day and time: _____________________________ This is a closed-book exam. The use of notes

  10. Printed Name: Page 1 of 7

    E-Print Network [OSTI]

    Walba, David

    print your name on each page of the exam. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6Printed Name: Page 1 of 7 CHEM 3311-100, Fall 2013 Professor Walba Second Hour Exam October 22: ________________________________ Recitation day and time: _____________________________ This is a closed-book exam. The use of notes

  11. Printed Name: Page 1 of 8

    E-Print Network [OSTI]

    Walba, David

    print your name on each page of the exam. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6Printed Name: Page 1 of 8 CHEM 3311-100, Fall 2013 Professor Walba Third Hour Exam November 19: ________________________________ Recitation day and time: _____________________________ This is a closed-book exam. The use of notes

  12. Printed Name: Page 1 of 9

    E-Print Network [OSTI]

    Walba, David

    print your name on each page of the exam. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6Printed Name: Page 1 of 9 CHEM 3311 (300), Fall 2014 Professor Walba Third Hour Exam November 18: _____________________________ Recitation day and time: __________________________ This is a closed-book exam. The use of notes, calculators

  13. aeolian sand transport: Topics by E-print Network

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

    that trigger dust storms, and the lifting of dust by dust devils and other small-scale vortices. We also discuss the physics of wind-blown sand and dune formation on Venus...

  14. aeolian sands underlain: Topics by E-print Network

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

    that trigger dust storms, and the lifting of dust by dust devils and other small-scale vortices. We also discuss the physics of wind-blown sand and dune formation on Venus...

  15. asian sand dust: Topics by E-print Network

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

    that trigger dust storms, and the lifting of dust by dust devils and other small-scale vortices. We also discuss the physics of wind-blown sand and dune formation on Venus...

  16. An Algorithm for Computing Customized 3D Printed Implants with Curvature Constrained Channels for Enhancing

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    An Algorithm for Computing Customized 3D Printed Implants with Curvature Constrained Channels results in 3D printing and steerable needle motion planning to create customized implants containing

  17. Print-and-Peel Fabrication for Microfluidics: What’s in it for Biomedical Applications?

    E-Print Network [OSTI]

    Thomas, Marlon S.; Millare, Brent; Clift, Joseph M.; Bao, Duoduo; Hong, Connie; Vullev, Valentine I.

    2010-01-01T23:59:59.000Z

    of direct three-dimensional (3D) printing of masters using ahave the capability for 3D printing, and hence, for directly

  18. aligned single-walled carbon: Topics by E-print Network

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

    Page Topic Index 1 Printed Multilayer Superstructures of Aligned Single-Walled Carbon Materials Science Websites Summary: Printed Multilayer Superstructures of Aligned...

  19. The Future of Manufacturing Takes Shape: 3D Printed Car on Display...

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

    Lead, Advanced Manufacturing Office Additive manufacturing - often referred to as 3D printing - is a revolutionary way to design and build products. Until now, 3D printing has...

  20. Thermal conductivity of large-grain niobium and its effect on trapped vortices in the temperature range 1.8?5 K

    SciTech Connect (OSTI)

    Mondal, Jayanta [Bhabha Atomic Research Centre; Ciovati, Gianluigi [JLAB; Mittal, Kailash C. [Bhabha Atomic Research Centre; Myneni, Ganapati Rao [JLAB

    2012-04-01T23:59:59.000Z

    Experimental investigation of the thermal conductivity of large grain and its dependence on the trapped vortices in parallel magnetic field with respect to the temperature gradient {gradient}T was carried out on four large-grain niobium samples from four different ingots. The zero-field thermal conductivity measurements are in good agreement with the measurements based on the theory of Bardeen-Rickayzen-Tewordt (BRT). The change in thermal conductivity with trapped vortices is analysed with the field dependence of the conductivity results of Vinen et al for low inductions and low-temperature situation. Finally, the dependence of thermal conductivity on the applied magnetic field in the vicinity of the upper critical field H{sub c2} is fitted with the theory of pure type-II superconductor of Houghton and Maki. Initial remnant magnetization in the sample shows a departure from the Houghton?Maki curve whereas the sample with zero trapped flux qualitatively agrees with the theory. A qualitative discussion is presented explaining the reason for such deviation from the theory. It has also been observed that if the sample with the trapped vortices is cycled through T{sub c}, the subsequent measurement of the thermal conductivity coincides with the zero trapped flux results.

  1. Printed circuit dispersive transmission line

    DOE Patents [OSTI]

    Ikezi, H.; Lin-Liu, Y.R.; DeGrassie, J.S.

    1991-08-27T23:59:59.000Z

    A printed circuit dispersive transmission line structure is disclosed comprising an insulator, a ground plane formed on one surface of the insulator, a first transmission line formed on a second surface of the insulator, and a second transmission line also formed on the second surface of the insulator and of longer length than the first transmission line and periodically intersecting the first transmission line. In a preferred embodiment, the transmission line structure exhibits highly dispersive characteristics by designing the length of one of the transmission line between two adjacent periodic intersections to be longer than the other. 5 figures.

  2. Contribution of Velocity Vortices and Fast Shock Reflection and Refraction to the Formation of EUV Waves in Solar Eruptions

    E-Print Network [OSTI]

    Wang, Hongjuan; Gong, Jiancun; Wu, Ning; Lin, Jun

    2015-01-01T23:59:59.000Z

    We numerically study the detailed evolutionary features of the wave-like disturbance and its propagation in the eruption. This work is a follow-up to Wang et al., using significantly upgraded new simulations. We focus on the contribution of the velocity vortices and the fast shock reflection and refraction in the solar corona to the formation of the EUV waves. Following the loss of equilibrium in the coronal magnetic structure, the flux rope exhibits rapid motions and invokes the fast-mode shock forward of the rope, which then produces the type II radio burst. The expansion of the fast shock, which is associated with outward motion, takes place in various directions, and the downward expansion shows the reflection and the refraction as a result of the non-uniform background plasma. The reflected component of the fast shock propagates upward and the refracted component propagates downward. As the refracted component reaches the boundary surface, a weak echo is excited. The Moreton wave is invoked as the fast s...

  3. Preparation and Magnetic Properties of MnBi-based Hard/Soft Composite Magnets

    SciTech Connect (OSTI)

    Ma, Yilong; Liu, Xubo; Gandha, Kinjal; Vuong, Nguyen V.; Yang, Y. B.; Yang, Jinbo; Poudyal, Narayan; Cui, Jun; Liu, J.Ping

    2014-05-07T23:59:59.000Z

    Bulk anisotropic composite magnets based on MnBi/Co(Fe) exhibiting the different morphology of the soft magnetic phase were prepared by powder metallurgy processing. First, single-phase MnBi bulk magnets were produced using a maximum energy product [(BH)m] of 6.3 MGOe at room temperature. The nanoscale soft phase with the different morphology was then added to form a composite magnet. It was observed that addition of magnetic soft-phase nanoparticles and nanoflakes causes a dramatic coercivity reduction. However, the addition of soft magnetic phase nanowires enhanced the composite magnetization without sacrificing the coercivity. Nevertheless, a kink was still observed on the demagnetization curves and the coercivity decreased when the soft-phase content was larger than 10 wt. %, which was caused by the agglomeration of the soft phase nanowires that also led to a decreased degree of texture.

  4. Systematic Software Testing using VeriSoft: An Analysis of the 4ESS

    E-Print Network [OSTI]

    Godefroid, Patrice

    Systematic Software Testing using VeriSoft: An Analysis of the 4ESS Heart­Beat Monitor P. Godefroid; Systematic Software Testing using VeriSoft: An Analysis of the 4ESS Heart­Beat Monitor Patrice Godefroid Bell­fledged programming lan­ guages such as C or C++. We report in this paper our anal­ ysis with VeriSoft of the 4ESS

  5. Mesoscopic lattice Boltzmann modeling of flowing soft systems

    E-Print Network [OSTI]

    Roberto Benzi; Sergio Chibbaro; Sauro Succi

    2008-07-28T23:59:59.000Z

    A mesoscopic multi-component lattice Boltzmann model with short-range repulsion between different species and short/mid-ranged attractive/repulsive interactions between like-molecules is introduced. The interplay between these composite interactions gives rise to a rich configurational dynamics of the density field, exhibiting many features of disordered liquid dispersions (micro-emulsions) and soft-glassy materials, such as long-time relaxation due to caging effects, anomalous enhanced viscosity, ageing effects under moderate shear and flow above a critical shear rate.

  6. Soft CP violation in K-meson systems

    E-Print Network [OSTI]

    J. C. Montero; C. C. Nishi; V. Pleitez; O. Ravinez; M. C. Rodriguez

    2006-01-17T23:59:59.000Z

    We consider a model with soft CP violation which accommodate the CP violation in the neutral kaons even if we assume that the Cabibbo-Kobayashi-Maskawa mixing matrix is real and the sources of CP violation are three complex vacuum expectation values and a trilinear coupling in the scalar potential. We show that for some reasonable values of the masses and other parameters the model allows to explain all the observed CP violation processes in the $K^0$-$\\bar{K}^0$ system.

  7. Dissipation and Rheology of Sheared Soft-Core Frictionless Disks

    E-Print Network [OSTI]

    Daniel Vågberg; Peter Olsson; S. Teitel

    2014-09-17T23:59:59.000Z

    We use numerical simulations to investigate the effect of different dissipative models on the shearing rheology of massive soft-core frictionless disks in two dimensions. We show that the presence of Newtonian (overdamped) vs Bagnoldian (inertial) rheology is related to the formation of large connected clusters of disks, and that sharp transitions may exist between the two as system parameters vary. In the limit of strongly inelastic collisions, we find that rheological curves collapse to a well-defined limit when plotted against an appropriate dimensionless strain rate.

  8. Controlling anomalous stresses in soft field-responsive systems

    E-Print Network [OSTI]

    D. Reguera; J. M. Rubí; A. Pérez-Madrid

    2000-03-02T23:59:59.000Z

    We report a new phenomenon occurring in field-responsive suspensions: shear-induced anomalous stresses. Competition between a rotating field and a shear flow originates a multiplicity of anomalous stress behaviors in suspensions of bounded dimers constituted by induced dipoles. The great variety of stress regimes includes non-monotonous behaviors, multi-resonances, negative viscosity effect and blockades. The reversibility of the transitions between the different regimes and the self-similarity of the stresses make this phenomenon controllable and therefore applicable to modify macroscopic properties of soft condensed matter phases

  9. Low-temperature random matrix theory at the soft edge

    SciTech Connect (OSTI)

    Edelman, Alan [Department of Mathematics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Persson, Per-Olof [Department of Mathematics, University of California, Berkeley, California 94720 (United States); Sutton, Brian D. [Department of Mathematics, Randolph-Macon College, Ashland, Virginia 23005 (United States)

    2014-06-15T23:59:59.000Z

    “Low temperature” random matrix theory is the study of random eigenvalues as energy is removed. In standard notation, ? is identified with inverse temperature, and low temperatures are achieved through the limit ? ? ?. In this paper, we derive statistics for low-temperature random matrices at the “soft edge,” which describes the extreme eigenvalues for many random matrix distributions. Specifically, new asymptotics are found for the expected value and standard deviation of the general-? Tracy-Widom distribution. The new techniques utilize beta ensembles, stochastic differential operators, and Riccati diffusions. The asymptotics fit known high-temperature statistics curiously well and contribute to the larger program of general-? random matrix theory.

  10. Polymer solutions: from hard monomers to soft polymers

    E-Print Network [OSTI]

    J. -P. Hansen; C. I. Addison; A. A. Louis

    2005-07-15T23:59:59.000Z

    A coarse-graining strategy for dilute and semi-dilute solutions of interacting polymers, and of colloid polymer mixtures is briefly described. Monomer degrees of freedom are traced out to derive an effective, state dependent pair potential between the polymer centres of mass. The cross-over between good and poor solvent conditions is discussed within a scaling analysis. The method is extended to block copolymers represented as "necklaces" of soft "blobs", and its success is illustrated here in the case of a symmetric diblock copolymer which exhibits microphase separation.

  11. Regularization Dependence of Running Couplings in Softly Broken Supersymmetry

    E-Print Network [OSTI]

    Stephen P. Martin; Michael T. Vaughn

    2008-07-24T23:59:59.000Z

    We discuss the dependence of running couplings on the choice of regularization method in a general softly-broken N=1 supersymmetric theory. Regularization by dimensional reduction respects supersymmetry, but standard dimensional regularization does not. We find expressions for the differences between running couplings in the modified minimal subtraction schemes of these two regularization methods, to one loop order. We also find the two-loop renormalization group equations for gaugino masses in both schemes, and discuss the application of these results to the Minimal Supersymmetric Standard Model.

  12. Microfluidic rheology of soft colloids above and below jamming

    E-Print Network [OSTI]

    K. N. Nordstrom; E. Verneuil; P. E. Arratia; A. Basu; Z. Zhang; A. G. Yodh; J. P. Gollub; D. J. Durian

    2010-09-22T23:59:59.000Z

    The rheology near jamming of a suspension of soft colloidal spheres is studied using a custom microfluidic rheometer that provides stress versus strain rate over many decades. We find non-Newtonian behavior below the jamming concentration and yield stress behavior above it. The data may be collapsed onto two branches with critical scaling exponents that agree with expectations based on Hertzian contacts and viscous drag. These results support the conclusion that jamming is similar to a critical phase transition, but with interaction-dependent exponents.

  13. Soft-Landing of Peptide IOns Onto Self-Assembled Monolayer Surfaces...

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

    self-assembled monolayer surfaces (SAMs). Peptide ions are particularly attractive model systems that provide important insights on the behavior of soft landed proteins, while...

  14. Soft X-Ray Spectroscopic Study of Dense Strontium-Doped Lanthanum...

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

    Spectroscopic Study of Dense Strontium-Doped Lanthanum Manganite Cathodes for Solid Oxide Fuel Cell Applications. Soft X-Ray Spectroscopic Study of Dense Strontium-Doped Lanthanum...

  15. High-resolution Soft-RIXS: Scientific Goals and Technical Challenges...

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

    soft x-ray scattering has been recently boosted mainly by results on high Tc superconductors and other cuprates, where orbital and magnetic excitations could be studied with...

  16. Demonstration of 12 nm resolution Fresnel zone plate lens based soft x-ray microscopy

    E-Print Network [OSTI]

    Chao, W.

    2010-01-01T23:59:59.000Z

    of 12 nm Resolution Fresnel Zone Plate Lens based Soft X-raynanofabrication process for Fresnel zone plate lenses. Theoptical performance of Fresnel zone plate lens based imaging

  17. Soft inertial microfluidics for high throughput separation of bacteria from human blood cells

    E-Print Network [OSTI]

    Wu, Zhigang

    2009-01-01T23:59:59.000Z

    Soft inertial microfluidics for high throughput separation1 Introduction Microfluidics has gained significant advancesof mammalian cells using microfluidics 3,4 , there have been

  18. Soft-core processor study for node-based architectures.

    SciTech Connect (OSTI)

    Van Houten, Jonathan Roger; Jarosz, Jason P.; Welch, Benjamin James; Gallegos, Daniel E.; Learn, Mark Walter

    2008-09-01T23:59:59.000Z

    Node-based architecture (NBA) designs for future satellite projects hold the promise of decreasing system development time and costs, size, weight, and power and positioning the laboratory to address other emerging mission opportunities quickly. Reconfigurable Field Programmable Gate Array (FPGA) based modules will comprise the core of several of the NBA nodes. Microprocessing capabilities will be necessary with varying degrees of mission-specific performance requirements on these nodes. To enable the flexibility of these reconfigurable nodes, it is advantageous to incorporate the microprocessor into the FPGA itself, either as a hardcore processor built into the FPGA or as a soft-core processor built out of FPGA elements. This document describes the evaluation of three reconfigurable FPGA based processors for use in future NBA systems--two soft cores (MicroBlaze and non-fault-tolerant LEON) and one hard core (PowerPC 405). Two standard performance benchmark applications were developed for each processor. The first, Dhrystone, is a fixed-point operation metric. The second, Whetstone, is a floating-point operation metric. Several trials were run at varying code locations, loop counts, processor speeds, and cache configurations. FPGA resource utilization was recorded for each configuration. Cache configurations impacted the results greatly; for optimal processor efficiency it is necessary to enable caches on the processors. Processor caches carry a penalty; cache error mitigation is necessary when operating in a radiation environment.

  19. Three-dimensional jamming and flows of soft glassy materials

    E-Print Network [OSTI]

    Guillaume Ovarlez; Quentin Barral; Philippe Coussot

    2011-05-03T23:59:59.000Z

    Various disordered dense systems such as foams, gels, emulsions and colloidal suspensions, exhibit a jamming transition from a liquid state (they flow) to a solid state below a yield stress. Their structure, thoroughly studied with powerful means of 3D characterization, exhibits some analogy with that of glasses which led to call them soft glassy materials. However, despite its importance for geophysical and industrial applications, their rheological behavior, and its microscopic origin, is still poorly known, in particular because of its nonlinear nature. Here we show from two original experiments that a simple 3D continuum description of the behaviour of soft glassy materials can be built. We first show that when a flow is imposed in some direction there is no yield resistance to a secondary flow: these systems are always unjammed simultaneously in all directions of space. The 3D jamming criterion appears to be the plasticity criterion encountered in most solids. We also find that they behave as simple liquids in the direction orthogonal to that of the main flow; their viscosity is inversely proportional to the main flow shear rate, as a signature of shear-induced structural relaxation, in close similarity with the structural relaxations driven by temperature and density in other glassy systems.

  20. Failing softly: A fracture theory of highly-deformable materials

    E-Print Network [OSTI]

    Tamar Goldman Boué; Roi Harpaz; Jay Fineberg; Eran Bouchbinder

    2015-03-24T23:59:59.000Z

    Highly-deformable materials, from synthetic hydrogels to biological tissues, are becoming increasingly important from both fundamental and practical perspectives. Their mechanical behaviors, in particular the dynamics of crack propagation during failure, are not yet fully understood. Here we propose a theoretical framework for the dynamic fracture of highly-deformable materials, in which the effects of a dynamic crack are treated with respect to the nonlinearly deformed (pre-stressed/strained), non-cracked, state of the material. Within this framework, we derive analytic and semi-analytic solutions for the near-tip deformation fields and energy release rates of dynamic cracks propagating in incompressible neo-Hookean solids under biaxial and uniaxial loading. We show that moderately large pre-stressing has a marked effect on the stress fields surrounding a crack's tip. We verify these predictions by performing extensive experiments on the fracture of soft brittle elastomers over a range of loading levels and propagation velocities, showing that the newly developed framework offers significantly better approximations to the measurements than standard approaches at moderately large levels of external loadings and high propagation velocities. This framework should be relevant to the failure analysis of soft and tough, yet brittle, materials.

  1. Internal dynamics and activated processes in Soft-Glassy materials

    E-Print Network [OSTI]

    R. Benzi; M. Sbragaglia; A. Scagliarini; P. Perlekar; M. Bernaschi; S. Succi; F. Toschi

    2014-10-24T23:59:59.000Z

    Plastic rearrangements play a crucial role in the characterization of soft-glassy materials, such as emulsions and foams. Based on numerical simulations of soft-glassy systems, we study the dynamics of plastic rearrangements at the hydrodynamic scales where thermal fluctuations can be neglected. Plastic rearrangements require an energy input, which can be either provided by external sources, or made available through time evolution in the coarsening dynamics, in which the total interfacial area decreases as a consequence of the slow evolution of the dispersed phase from smaller to large droplets/bubbles. We first demonstrate that our hydrodynamic model can quantitatively reproduce such coarsening dynamics. Then, considering periodically oscillating strains, we characterize the number of plastic rearrangements as a function of the external energy-supply, and show that they can be regarded as activated processes induced by a suitable "noise" effect. Here we use the word noise in a broad sense, referring to the internal non-equilibrium dynamics triggered by spatial random heterogeneities and coarsening. Finally, by exploring the interplay between the internal characteristic time-scale of the coarsening dynamics and the external time-scale associated with the imposed oscillating strain, we show that the system exhibits the phenomenon of stochastic resonance, thereby providing further credit to the mechanical activation scenario.

  2. Soft x-ray laser microscope. Final report

    SciTech Connect (OSTI)

    Suckewer, P.I.

    1990-10-01T23:59:59.000Z

    The program consisted of two phases (Phase I and Phase II). The goal of the Phase I (first year program) was to design and construct the Soft X-ray Laser Contact Microscope. Such microscope was constructed and adapted to PPL`s 18.2nm soft X-ray Laser (SXL), which in turn was modified and prepared for microscopy experiments. Investigation of the photoresist response to 18.2nm laser radiation and transmissivity of 0.1m thick silicion-nitride (Si{sub 3}N{sub 4}) windows were important initial works. The goal of the first year of Phase II was to construct X-ray contact microscope in combination with existing optical phase microscope, already used by biologists. In the second year of Phase II study of dehydrated Horeseshoe Crab and Hela cancer cells were performed with COXRALM. Also during Phase II, the Imaging X-Ray Laser Microscope (IXRALM) was designed and constructed. This paper describes the development of each of the microscopes and their application for research.

  3. A method for dating early books and prints using image analysis

    E-Print Network [OSTI]

    Hedges, Blair

    by Rembrandt (Ash & Fletcher 1998) and Shakespeare (Hunter 2001). Occasionally, marks in prints that resulted

  4. Hot Melt Inks for 3D Printing Veronika Chovancova*, Alexandra Pekarovicova* and Paul D. Fleming III

    E-Print Network [OSTI]

    Fleming, Paul D. "Dan"

    Hot Melt Inks for 3D Printing Veronika Chovancova*, Alexandra Pekarovicova* and Paul D. Fleming III for 3D printing comprises different waxes, tackifier and plasticizer resins, rheology modifiers, and UV rheological (or flow) behavior. 1 3D printing, direct ink-jet printing, and related approaches such as hot

  5. Computer-Aided Design for Microfluidic Chips Based on Multilayer Soft Lithography

    E-Print Network [OSTI]

    Rajamani, Sriram K.

    Computer-Aided Design for Microfluidic Chips Based on Multilayer Soft Lithography Nada Amin1 Abstract-- Microfluidic chips are emerging as a powerful platform for automating biology experiments automation techniques for microfluidic chips based on multilayer soft lithography. We focus our attention

  6. Low Power Soft-Output Signal Detector Design for Wireless MIMO Communication Systems

    E-Print Network [OSTI]

    Zhang, Tong

    Low Power Soft-Output Signal Detector Design for Wireless MIMO Communication Systems Sizhong Chen-life wireless communication systems use error correcting codes (ECC) that demand soft input for decoding and Tong Zhang Electrical, Computer, and Systems Engineering Department Rensselaer Polytechnic Institute

  7. Fishery systems and linkages: from clockworks to soft watches Serge M. Garcia and Anthony T. Charles

    E-Print Network [OSTI]

    Charles, Anthony

    Fishery systems and linkages: from clockworks to soft watches Serge M. Garcia and Anthony T. Charles Garcia, S. M., and Charles, A. T. 2007. Fishery systems and linkages: from clockworks to soft watches. ­ ICES Journal of Marine Science, 64: 580­587. The complex systemic nature of fisheries has been

  8. Heuristic Optimization of Scheduling and Allocation for Distributed Systems with Soft Deadlines

    E-Print Network [OSTI]

    Woodside, C. Murray

    Heuristic Optimization of Scheduling and Allocation for Distributed Systems with Soft Deadlines Tao Performance specifications in many systems take the form of a soft deadline for each class s of responses Zheng, Murray Woodside Dept. of Systems and Computer Engineering, Carleton University, 1125 Colonel

  9. Dependence of exchange coupling interaction on micromagnetic constants in hard/soft magnetic bilayer systems

    E-Print Network [OSTI]

    Rubloff, Gary W.

    Dependence of exchange coupling interaction on micromagnetic constants in hard/soft magnetic bilayer systems A. J. Zambano,1, * H. Oguchi,1 I. Takeuchi,1 Y. Choi,2,3 J. S. Jiang,2 J. P. Liu,3 S. E December 2006; published 30 April 2007 To elucidate the dependence of exchange coupling behavior of hard/soft

  10. Activity discovery from video employing soft computing relations Luis Patino, Francois Bremond and Monique Thonnat

    E-Print Network [OSTI]

    Boyer, Edmond

    a methodological and systematic exploration of the database. Knowledge discovery systems (KDS) aim at helping, and particularly important for activity discovery from video. Soft computing methodologies are particularly adapted systems employ soft computing techniques to characterize video activity patterns [3], [4]; the use

  11. Introduction to the Special Issue on Rough Sets and Soft Computing.

    E-Print Network [OSTI]

    Lin, Tsau Young

    of information systems. From the outset, rough set theory has been a methodology of database mining or knowledge, neighborhood systems, neural network, and soft computing. In real world applications, we see papers in Introduction to the Special Issue on Rough Sets and Soft Computing. T. Y. Lin Department

  12. Duration distributions for different softness groups of gamma-ray bursts

    E-Print Network [OSTI]

    Y. -P. Qin; A. C. Gupta; J. H. Fan; C. -Y. Su; R. -J. Lu

    2010-10-10T23:59:59.000Z

    Gamma-ray bursts (GRBs) are divided into two classes according to their durations. We investigate if the softness of bursts plays a role in the conventional classification of the objects. We employ the BATSE (Burst and Transient Source Experiment) catalog and analyze the duration distributions of different groups of GRBs associated with distinct softness. Our analysis reveals that the conventional classification of GRBs with the duration of bursts is influenced by the softness of the objects. There exits a bimodality in the duration distribution of GRBs for each group of bursts and the time position of the dip in the bimodality histogram shifts with the softness parameter. Our findings suggest that the conventional classification scheme should be modified by separating the two well-known populations in different softness groups, which would be more reasonable than doing so with a single sample. According to the relation between the dip position and the softness parameter, we get an empirical function that can roughly set apart the short-hard and long-soft bursts: $SP = (0.100 \\pm 0.028) T_{90}^{-(0.85 \\pm 0.18)}$, where $SP$ is the softness parameter adopted in this paper.

  13. A Soft Wearable Robotic Device for Active Knee Motions using Flat Pneumatic Artificial Muscles

    E-Print Network [OSTI]

    Park, Yong-Lae

    elastomer muscles were employed for assisted knee extension and flexion. The robotic device was testedA Soft Wearable Robotic Device for Active Knee Motions using Flat Pneumatic Artificial Muscles Yong present the design of a soft wearable robotic device composed of elastomeric artificial muscle actuators

  14. Soft X-Ray and Vacuum Ultraviolet Based Spectroscopy of the Actinides

    SciTech Connect (OSTI)

    Tobin, J G

    2011-03-17T23:59:59.000Z

    The subjects of discussion included: VUV photoelectron spectroscopy, X-ray photoelectron spectroscopy, Synchrotron-radiation-based photoelectron spectroscopy, Soft x-ray absorption spectroscopy, Soft x-ray emission spectroscopy, Inverse photoelectron spectroscopy, Bremstrahlung Isochromat Spectroscopy, Low energy IPES, Resonant inverse photoelectron spectroscopy.

  15. Exact beta-functions in softly-broken N=2 Chern-Simons matter theories

    E-Print Network [OSTI]

    I. Jack; C. Luckhurst

    2011-01-21T23:59:59.000Z

    We present exact results for the beta-functions for the soft-breaking parameters in softly-broken N=2 Chern-Simons matter theories in terms of the anomalous dimension in the unbroken theory. We check our results explicitly up to the two loop level.

  16. Instability of two-dimensional graphene: Breaking sp2 bonds with soft x rays

    E-Print Network [OSTI]

    Zettl, Alex

    Instability of two-dimensional graphene: Breaking sp2 bonds with soft x rays S. Y. Zhou,1,2 Ç. Ö the stability of various kinds of graphene samples under soft x-ray irradiation. Our results show that in single-layer exfoliated graphene a closer analog to two-dimensional material , the in-plane carbon- carbon bonds

  17. Efficient Power Management of Heterogeneous Soft Real-Time Clusters Leping Wang, Ying Lu

    E-Print Network [OSTI]

    Lu, Ying

    Efficient Power Management of Heterogeneous Soft Real-Time Clusters Leping Wang, Ying Lu Department}@cse.unl.edu Abstract With growing cost of electricity, the power management of server clusters has become an important for power management of heterogeneous soft real-time clusters. It is built on simple but effective

  18. An Efficient Threshold-Based Power Management Mechanism for Heterogeneous Soft Real-Time Clusters

    E-Print Network [OSTI]

    Lu, Ying

    An Efficient Threshold-Based Power Management Mechanism for Heterogeneous Soft Real-Time Clusters {lwang, ylu}@cse.unl.edu Abstract With growing cost of electricity, the power management of server proposes an efficient algorithm for power management of heterogeneous soft real-time clusters. It is built

  19. Microfabricated rubber microscope using soft solid immersion lenses Yann Gambin, Olivier Legrand, and Stephen R. Quakea

    E-Print Network [OSTI]

    Quake, Stephen R.

    Microfabricated rubber microscope using soft solid immersion lenses Yann Gambin, Olivier Legrand a technique of soft lithography to microfabricate efficient solid immersion lenses SIL out of rubber into a handheld rubber microscope for microfluidic flow cytometry and imaged single E. Coli cells by fluorescence

  20. Soft-ratchet modeling of slow dynamics in the nonlinear resonant response of sedimentary

    E-Print Network [OSTI]

    Soft-ratchet modeling of slow dynamics in the nonlinear resonant response of sedimentary rocks of Physics 0-7354-0330-9/06/$23.00 CREDIT LINE (BELOW) TO BE INSERTED ONLY ON THE FIRST PAGE OF THE #12;SOFT-RATCHET

  1. ENG BE/ME/MS 504: Polymers and Soft Materials GRS PY 744: Polymer Physics.

    E-Print Network [OSTI]

    Vajda, Sandor

    ENG BE/ME/MS 504: Polymers and Soft Materials GRS PY 744: Polymer Physics. Prof. Rama Bansil Class: Blackboard.bu.edu ME/MS/BE 504 PY 744 A1 POLYMERS AND SOFT MATERIALS (FALL 2012) (12FALLENGME504_A1) E with thermodynamics and statistical mechanics will be assumed. Practical applications of polymers will be discussed

  2. Turbo Equalization of Non-Linear Satellite Channels using Soft Interference Cancellation

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    Turbo Equalization of Non-Linear Satellite Channels using Soft Interference Cancellation D by such channels is considered, by employing a soft interference canceller operating in a turbo equalization framework. I. INTRODUCTION Inspired by the advent of turbo codes [1], turbo equal- ization (TE) [2] has

  3. Structure and rheological properties of soft-hard nanocomposites: Influence of aggregation and interfacial

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Structure and rheological properties of soft-hard nanocomposites: Influence of aggregation, Composites and Hybrid Polymeric Materials 17/12/2004 Figures : 13 Tables : 4 #12;2 Abstract A study nanocomposite consists of (hard) nanosilica beads embedded in a soft polymeric matrix, which is itself formed

  4. Capture of particles in soft porous media , R. Hhler and O. Pitois

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -height in the foam sample, using a thin glass capillary. The solid particles that we use are green fluorescent Cedex 2, France We investigate the capture of particles in soft porous media. Liquid foam constitutes foams can be considered as soft porous materials, exhibiting fine liquid channels between gas bubbles

  5. Benchmarking Non-Hardware Balance-of-System (Soft) Costs for U.S. Photovoltaic Systems Using a Bottom-Up Approach and Installer Survey

    E-Print Network [OSTI]

    Ardani, Kristen

    2014-01-01T23:59:59.000Z

    Non-Hardware Balance-of-System (Soft) Costs for U.S.Non-Hardware Balance-of-System (Soft) Costs for U.S.equivalent to 45% of total system soft costs ($3.32/W) and

  6. Comparison of soft computing techniques for a three-phase oil field centrifuge.

    SciTech Connect (OSTI)

    Smith, R. E. (Ronald E.); Parkinson, w; Miller, N. (Neal)

    2002-01-01T23:59:59.000Z

    In this work we compare fuzzy techniques to neural network techniques for building a soft sensor for a three-phase oil field centrifuge. The soft sensor is used in a feed-forward control system that augments a feedback control system. Two approaches were used to develop the soft sensor. The first approach was to use a fuzzy rule based system based upon the experience of an expert operator. The expert operator's experience was supplemented using a computer model of the system. The second approach was to use a neural network to build the inverse of the computer model. The pros and cons of both techniques are discussed. KEYWORDS: fuzzy logic, neural networks, soft sensor, soft computing

  7. akademik online sebagai: Topics by E-print Network

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

    Websites Summary: Is Available 24 7 Call 1-866-SKIL-HELP (1-866-754-5435) SkillSoft Technical Support Submit an online problem report Support@SkillSoft.com Or call Toll Free at...

  8. Soft-ratchet modeling of end-point memory in the nonlinear resonant response of sedimentary rocks

    E-Print Network [OSTI]

    Soft-ratchet modeling of end-point memory in the nonlinear resonant response of sedimentary rocks. The subsystem of ruptured bonds is shown to be of a soft-ratchet type, so that its response to an alternating

  9. articular prosthetic device: Topics by E-print Network

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

    of variable impedance prosthetic sockets for trans-tibial amputees : polyjet matrix 3D printing of comfortable prosthetic sockets using digital anatomical data MIT - DSpace...

  10. artificially generated gravity: Topics by E-print Network

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

    (Nolfi and Floreano, 2000), neural networks design files of body com- ponents for 3D printing, and for compiling neural-network controllers to run artificial neural networks....

  11. advanced lithium titanate: Topics by E-print Network

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

    MEMS has been limited due to the lack of process compatibility with existing MEMS manufacturing techniques. Direct printing of thin films eliminates the need for...

  12. advanced hydrotest facility: Topics by E-print Network

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

    however a high end product, which can be itself subject to printed circuit board manufacturing control problems that could greatly affect its quality control. In order to study...

  13. additional designations foreign: Topics by E-print Network

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

    76 International Mobility and Foreign Students Service International Activities for didactics office Mathematics Websites Summary: .unige.itrelint Printed by centro Stampa...

  14. area southwest estonia: Topics by E-print Network

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

    Langmuir, Charles H. 130 Southwest MN IPM STUFF All the pestilence that's fit to print Power Transmission, Distribution and Plants Websites Summary: weather Rainfall, air and soil...

  15. acute uncomplicated urinary: Topics by E-print Network

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

    decision support intervention sites (11 practices) received decision support for acute cough illness through a print-based strategy, the computer-assisted decision support...

  16. acute uncomplicated cystitis: Topics by E-print Network

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

    decision support intervention sites (11 practices) received decision support for acute cough illness through a print-based strategy, the computer-assisted decision support...

  17. acute uncomplicated plasmodium: Topics by E-print Network

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

    decision support intervention sites (11 practices) received decision support for acute cough illness through a print-based strategy, the computer-assisted decision support...

  18. acute uncomplicated falciparum: Topics by E-print Network

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

    decision support intervention sites (11 practices) received decision support for acute cough illness through a print-based strategy, the computer-assisted decision support...

  19. array automated assembly: Topics by E-print Network

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

    Summary: environmental impact Robotics Injection Molding Advanced Polymer Composites 3D Printing 12;In-Mold Assembly: A New manufacturing Approach Introduce multiple...

  20. anna veronika wendland: Topics by E-print Network

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

    Heijbel Storage phosphor autoradiography Tian, Weidong 17 Hot Melt Inks for 3D Printing Veronika Chovancova*, Alexandra Pekarovicova* and Paul D. Fleming III Engineering...