Now showing items 26-45 of 977

    • A note on the switching adiabatic theorem 

      Elgart, Alexander; Hagedorn, George A. (AIP Publishing, 2012-10)
      We derive a nearly optimal upper bound on the running time in the adiabatic theorem for a switching family of Hamiltonians. We assume the switching Hamiltonian is in the Gevrey class G(alpha) as a function of time, and we ...
    • a numerical study of periodic disturbances on two-layer Couette flaw 

      Li, J.; Renardy, Y. Y.; Renardy, M. (AIP Publishing, 1998-12)
      The flow of two viscous liquids is investigated numerically with a volume of fluid scheme. The scheme incorporates a semi-implicit Stokes solver to enable computations at low Reynolds numbers, and a second-order velocity ...
    • a population of z > 2 far-infrared herschel-spire-selected starbursts 

      Casey, C. M.; Berta, S.; Bethermin, M.; Bock, J.; Bridge, C.; Burgarella, D.; Chapin, E.; Chapman, S. C.; Clements, D. L.; Conley, A.; Conselice, C. J.; Cooray, A.; Farrah, D.; Hatziminaoglou, E.; Ivison, R. J.; le Floc'h, E.; Lutz, D.; Magdis, G.; Magnelli, B.; Oliver, S. J.; Page, M. J.; Pozzi, F.; Rigopoulou, D.; Riguccini, L.; Roseboom, I. G.; Sanders, D. B.; Scott, D.; Seymour, N.; Valtchanov, I.; Vieira, J. D.; Viero, M.; Wardlow, J. (IOP Publishing Ltd., 2012-12)
      We present spectroscopic observations for a sample of 36 Herschel-Spire 250-500 mu m selected galaxies (HSGs) at 2 < z < 5 from the Herschel Multi-tiered Extragalactic Survey. Redshifts are confirmed as part of a large ...
    • a precision test for an extra spatial dimension using black-hole-pulsar binaries 

      Simonetti, J. H.; Kavic, M.; Minic, D.; Surani, U.; Vijayan, V. (IOP Publishing Ltd., 2011-08)
      We discuss the observable effects of enhanced black hole mass loss in a black hole-neutron star (BH-NS) binary, due to the presence of a warped extra spatial dimension of curvature radius L in the braneworld scenario. For ...
    • a redshift survey of herschel far-infrared selected starbursts and implications for obscured star formation 

      Casey, C. M.; Berta, S.; Bethermin, M.; Bock, J.; Bridge, C.; Budynkiewicz, J.; Burgarella, D.; Chapin, E.; Chapman, S. C.; Clements, D. L.; Conley, A.; Conselice, C. J.; Cooray, A.; Farrah, D.; Hatziminaoglou, E.; Ivison, R. J.; le Floc'h, E.; Lutz, D.; Magdis, G.; Magnelli, B.; Oliver, S. J.; Page, M. J.; Pozzi, F.; Rigopoulou, D.; Riguccini, L.; Roseboom, I. G.; Sanders, D. B.; Scott, D.; Seymour, N.; Valtchanov, I.; Vieira, J. D.; Viero, M.; Wardlow, J. (IOP Publishing Ltd., 2012-12)
      We present Keck spectroscopic observations and redshifts for a sample of 767 Herschel-SPIRE selected galaxies (HSGs) at 250, 350, and 500 mu m, taken with the Keck I Low Resolution Imaging Spectrometer and the Keck II DEep ...
    • A regularized Gauss-Newton trust region approach to imaging in diffuse optical tomography 

      de Sturler, E.; Kilmer, M. E. (Siam Publications, 2011)
      We present a new algorithm for the solution of nonlinear least squares problems arising from parameterized imaging problems with diffuse optical tomographic data [D. Boas et al., IEEE Signal Process. Mag., 18 (2001), pp. ...
    • A Series of Supramolecular Complexes for Solar Energy Conversion via Water Reduction to Produce Hydrogen: An Excited State Kinetic Analysis of Ru(II),Rh(III),Ru(II) Photoinitiated Electron Collectors 

      White, Travis; Knoll, Jessica; Arachchige, Shamindri; Brewer, Karen (MDPI, 2011-12-27)
      Mixed-metal supramolecular complexes have been designed that photochemically absorb solar light, undergo photoinitiated electron collection and reduce water to produce hydrogen fuel using low energy visible light. This ...
    • A simple model of circadian rhythms based on dimerization and proteolysis of PER and TIM 

      Tyson, J. J.; Hong, C. I.; Thron, C. D.; Novak, B. (CELL PRESS, 1999-11)
      Many organisms display rhythms of physiology and behavior that are entrained to the 24-h cycle of light and darkness prevailing on Earth. Under constant conditions of illumination and temperature, these internal biological ...
    • A state space error estimate for pod-deim nonlinear model reduction 

      Chaturantabut, S.; Sorensen, D. C. (Siam Publications, 2012)
      This paper derives state space error bounds for the solutions of reduced systems constructed using proper orthogonal decomposition (POD) together with the discrete empirical interpolation method (DEIM) recently developed ...
    • A uniqueness result for p-Monotone viscosity solutions of Hamilton-Jacobi equations in bounded domains 

      Day, M. V. (Siam Publications, 2009)
      We consider a class of Hamilton-Jacobi equations H(x, Du(x)) - 0 with no u-dependence and with continuity properties consistent with recent applications in queueing theory. Continuous viscosity solutions are considered in ...
    • A volume-of-fluid formulation for the study of co-flowing fluids governed by the Hele-Shaw equations 

      S. Afkhami; Y. Renardy (American Institute of Physics, 2013-08)
      We present a computational framework to address the flow of two immiscible viscous liquids which co-flow into a shallow rectangular container at one side, and flow out into a holding container at the opposite side. Assumptions ...
    • A Water Maser Flare in W49N: Amplification by a Rotating Foreground Cloud 

      Boboltz, D. A.; Simonetti, J. H.; Dennison, B.; Diamond, P. J.; Uphoff, J. A. (IOP PUBLISHING LTD, 1998-12)
      We monitored the 22 GHz H2O maser emission toward W49N from December 1989 through May 1990. During this period we observed an outburst in a component at -66.25 km s(-1). The flux density of the flaring component increased ...
    • A-site doping-induced renormalization of structural transformations in the PbSc0.5Nb0.5O3 relaxor ferroelectric under high pressure 

      Maier, B. J.; Welsch, A. M.; Angel, R. J.; Mihailova, B.; Zhao, J.; Engel, J. M.; Schmitt, L. A.; Paulmann, C.; Gospodinov, M.; Friedrich, A.; Bismayer, U. (American Physical Society, 2010-05-01)
      The effect of A-site incorporated Ba2+ and Bi3+ on the pressure-driven structural transformations in Pb-based perovskite-type relaxor ferroelectrics has been studied with in situ x-ray diffraction and Raman scattering of ...
    • Abacus proofs of Schur function identities 

      Loehr, N. A. (Siam Publications, 2010)
      This article uses combinatorial objects called labeled abaci to give direct combinatorial proofs of many familiar facts about Schur polynomials. We use abaci to prove the Pieri rules, the Littlewood-Richardson rule, the ...
    • Absence of Mycobacterium intracellulare and Presence of Mycobacterium chimaera in Household Water and Biofilm Samples of Patients in the United States with Mycobacterium avium Complex Respiratory Disease 

      Wallace, Richard J., Jr.; Iakhiaeva, Elena; Williams, Myra D.; Brown-Elliott, Barbara A.; Vasireddy, Sruthi; Vasireddy, Ravikiran; Lande, Leah; Peterson, Donald D.; Sawicki, Janet; Kwait, Rebecca; Tichenor, Wellington S.; Turenne, Christine; Falkinham, Joseph O., III (American Society for Microbiology, 2013-03-27)
      Recent studies have shown that respiratory isolates from pulmonary disease patients and household water/biofilm isolates of Mycobacterium avium could be matched by DNA fingerprinting. To determine if this is true for ...
    • Acyl-Homoserine Lactone Recognition and Response Hindering the Quorum-Sensing Regulator EsaR 

      Schu, Daniel J.; Scruggs, Jessica M.; Geissenger, Jared S.; Michel, Katherine G.; Stevens, Ann M. (Public Library of Science, 2014-09-19)
      During quorum sensing in the plant pathogen Pantoea stewartii subsp. stewartii, EsaI, an acyl-homoserine lactone (AHL) synthase, and the transcription factor EsaR coordinately control capsular polysaccharide production. ...
    • Adapting to Symptoms of Global Warming Rather Than Addressing the Cause 

      Cairns, John (Virginia Tech, 2014-01-22)
      In recent years, global warming has been ignored and scientists producing evidence supporting this hypothesis have been denigrated and even investigated. However, as irrefutable evidence showing that global warming was a ...
    • Aging in coarsening diluted ferromagnets 

      Park, H.; Pleimling, M. (American Physical Society, 2010-10)
      We comprehensively study nonequilibrium relaxation and aging processes in the two-dimensional randomsite Ising model through numerical simulations. We discuss the dynamical correlation length as well as scaling functions ...
    • Aging processes in systems with anomalous slow dynamics 

      Afzal, N.; Pleimling, M. (American Physical Society, 2013-01-14)
      Recently, different numerical studies of coarsening in disordered systems have shown the existence of a crossover from an initial, transient, power-law domain growth to a slower, presumably logarithmic, growth. However, ...
    • algal periphyton growth on nutrient-diffusing substrates: an in situ bioassay 

      Fairchild, G. W.; Lowe, R. L.; Richardson, W. B. (Ecological Society of America, 1985)
      Differences in nutrient limitation for dominant species within an algal periphyton community were determined using additions of N and P supplied by nutrient-diffusing artificial substrates. Sealed clay flowerpots were ...