URI: http://hdl.handle.net/2144/978

Recently Added

  • Reconstruction of Fine Scale Auroral Dynamics 

    Hirsch, Michael; Semeter, Joshua; Zettergren, Matthew; Dahlgren, Hanna; Goenka, Chhavi; Akbari, Hassanali (IEEE Transactions on Geoscience and Remote Sensing, 2015-11-24)
    We present a feasibility study for a high frame rate, short baseline auroral tomographic imaging system useful for estimating parametric variations in the precipitating electron number flux spectrum of dynamic auroral ...
  • Protein Docking by the Underestimation of Free Energy Funnels in the Space of Encounter Complexes 

    Shen, Yang; Paschalidis, Ioannis Ch.; Vakili, Pirooz; Vajda, Sandor (Public Library of Science, 2008-10-10)
    Similarly to protein folding, the association of two proteins is driven by a free energy funnel, determined by favorable interactions in some neighborhood of the native state. We describe a docking method based on stochastic ...
  • A Rehabilitation Tool for Functional Balance using Altered Gravity and Virtual Reality 

    Oddsson, Lars IE; Karlsson, Robin; Konrad, Janusz; Ince, Serdar; Williams, Steve R; Zemkova, Erika (BioMed Central, 2007-7-10)
    BACKGROUND There is a need for effective and early functional rehabilitation of patients with gait and balance problems including those with spinal cord injury, neurological diseases and recovering from hip fractures, a ...
  • Head & Neck Optical Diagnostics: Vision of the Future of Surgery 

    Upile, Tahwinder; Jerjes, Waseem; Sterenborg, Henricus J. C. M.; El-Naggar, Adel K.; Sandison, Ann; Witjes, Max J. H.; Biel, Merrill A.; Bigio, Irving; Wong, Brian J. F.; Gillenwater, Ann; MacRobert, Alexander J.; Robinson, Dominic J.; Betz, Christian S.; Stepp, Herbert; Bolotine, Lina; McKenzie, Gordon; Mosse, Charles Alexander; Barr, Hugh; Chen, Zhongping; Berg, Kristian; D'Cruz, Anil K.; Stone, Nicholas; Kendall, Catherine; Fisher, Sheila; Leunig, Andreas; Olivo, Malini; Richards-Kortum, Rebecca; Soo, Khee Chee; Bagnato, Vanderlei; Choo-Smith, Lin-Ping; Svanberg, Katarina; Tan, I. Bing; Wilson, Brian C.; Wolfsen, Herbert; Yodh, Arjun G.; Hopper, Colin (BioMed Central, 2009-07-13)
    Review paper and Proceedings of the Inaugural Meeting of the Head and Neck Optical Diagnostics Society (HNODS) on March 14th 2009 at University College London. The aim of our research must be to provide breakthrough ...
  • Piecewise Linear Models for the Quasiperiodic Transition to Chaos 

    Campbell, David K.; Galeeva, Roza; Tresser, Charles; Uherka, David J. (1995-02-24)
    We formulate and study analytically and computationally two families of piecewise linear degree one circle maps. These families offer the rare advantage of being non-trivial but essentially solvable models ...
  • Quantum Monte Carlo in the Interaction Representation --- Application to a Spin-Peierls Model 

    Campbell, David K.; Singh, R. R. P.; Sandvik, A. W. (1997-06-05)
    A quantum Monte Carlo algorithm is constructed starting from the standard perturbation expansion in the interaction representation. The resulting configuration space is strongly related to that of the ...
  • Possible Exotic Phases in the One-Dimensional Extended Hubbard Model 

    Clay, R. Torsten; Sandvik, Anders W.; Campbell, David K. (1998-10-01)
    We investigate numerically the ground state phase diagram of the one-dimensional extended Hubbard model, including an on--site interaction U and a nearest--neighbor interaction V. We focus on the ground ...
  • Dynamical Instabilities and Deterministic Chaos in Ballistic Electron Motion in Semiconductor Superlattices 

    Alekseev, Kirill N.; Berman, Gennady P.; Campbell, David K. (1998-07-29)
    We consider the motion of ballistic electrons within a superlattice miniband under the influence of an alternating electric field. We show that the interaction of electrons with the self-consistent ...
  • Spontaneous DC Current Generation in a Resistively Shunted Semiconductor Superlattice Driven by a TeraHertz Field 

    Alekseev, Kirill N.; Cannon, Ethan H.; McKinney, Jonathan C.; Kusmartsev, Feodor V.; Campbell, David K. (1997-09-02)
    We study a resistively shunted semiconductor superlattice subject to a high-frequency electric field. Using a balance equation approach that incorporates the influence of the electric circuit, we determine ...
  • Fractional and unquantized dc voltage generation in THz-driven semiconductor superlattices 

    Alekseev, Kirill N.; Cannon, Ethan H.; Kusmartsev, Feodor V.; Campbell, David K. (2001-03-29)
    We consider the spontaneous creation of a dc voltage across a strongly coupled semiconductor superlattice subjected to THz radiation. We show that the dc voltage may be approximately proportional either ...
  • Symmetry-breaking and chaos in electron transport in semiconductor superlattices 

    Alekseev, Kirill N.; Cannon, Ethan H.; McKinney, Jonathan C.; Kusmartsev, Feodor V.; Campbell, David K. (2001-04-09)
    We study the motion of electrons in a single miniband of a semiconductor superlattice driven by THz electric field polarized along the growth direction. We work in the semiclassical balance-equation model, ...
  • Dissipative Chaos in Semiconductor Superlattices 

    Alekseev, Kirill N.; Berman, Gennady P.; Campbell, David K.; Cannon, Ethan H.; Cargo, Matthew C. (1996-04-29)
    We consider the motion of ballistic electrons in a miniband of a semiconductor superlattice (SSL) under the influence of an external, time-periodic electric field. We use the semi-classical balance-equation ...