Now showing items 564-583 of 2261

  • Ear Deformations Give Bats a Physical Mechanism for Fast Adaptation of Ultrasonic Beam Patterns 

    Gao, L.; Balakrishnan, S.; He, W. K.; Yan, Z.; Muller, R. (American Physical Society, 2011-11-14)
    A large number of mammals, including humans, have intricate outer ear shapes that diffract incoming sound in a direction-and frequency-specific manner. Through this physical process, the outer ear shapes encode sound-source ...
  • Early time evolution of a chemically produced electron depletion 

    Scales, W. A.; Bernhardt, P. A.; Ganguli, G. (American Geophysical Union, 1995-01)
    The early time evolution of an ionospheric electron depletion produced by a radially expanding electron attachment chemical release is studied with a two-dimensional simulation model. The model includes electron attachment ...
  • Early time evolution of negative-ion clouds and electron-density depletions produced during electron-attachment chemical-release experiments 

    Scales, W. A.; Bernhardt, P. A.; Ganguli, G. (American Geophysical Union, 1994-01)
    Two-dimensional electrostatic particle-in-cell simulations are used to study the early time evolution of electron depletions and negative ion clouds produced during electron attachment chemical releases in the ionosphere. ...
  • ECE 2005 Annual Report 

    Virginia Tech; Virginia Tech College of Engineering; Bradley Department of Electrical and Computer Engineering (Bradley Department of Electrical and Computer Engineering, 2005)
  • ECE 2006 Annual Report 

    Virginia Tech; Virginia Tech College of Engineering; Bradley Department of Electrical and Computer Engineering (Bradley Department of Electrical and Computer Engineering, 2006)
  • ECE 2007 Annual Report 

    Virginia Tech; Virginia Tech College of Engineering; Bradley Department of Electrical and Computer Engineering (Bradley Department of Electrical and Computer Engineering, 2007)
  • ECE 2008 Annual Report 

    Virginia Tech; Virginia Tech College of Engineering; Bradley Department of Electrical and Computer Engineering (Bradley Department of Electrical and Computer Engineering, 2008)
  • ECE 2009 Annual Report 

    Virginia Tech; Virginia Tech College of Engineering; Bradley Department of Electrical and Computer Engineering (Bradley Department of Electrical and Computer Engineering, 2009)
  • ECE 2010 Annual Report 

    Virginia Tech; Virginia Tech College of Engineering; Bradley Department of Electrical and Computer Engineering (Bradley Department of Electrical and Computer Engineering, 2010)
  • ECE 2011 Annual Report 

    Virginia Tech; Virginia Tech College of Engineering; Bradley Department of Electrical and Computer Engineering (Bradley Department of Electrical and Computer Engineering, 2011)
  • ECE 2013 Annual Report 

    Virginia Tech; Bradley Department of Electrical and Computer Engineering; Virginia Tech College of Engineering (Bradley Department of Electrical and Computer Engineering, 2013)
  • Economics of greenhouse heating with a mine air-assisted heat pump 

    Marsh, L. S.; Singh, S. (American Society of Agricultural and Biological Engineers, 1994)
    An analysis of the economics of greenhouse heating with a heat pump coupled with an inactive deep mine is presented. Several heat pump and conventional gas-fired heater combinations (hybrid systems) were evaluated using a ...
  • Edge Coloring Planar Graphs with Two Outerplanar Subgraphs 

    Heath, Lenwood S. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1991-12-01)
  • Edge-Packing by Isomorphic Subgraphs 

    Vergara, John Paul C.; Heath, Lenwood S. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1991)
  • Edge-Packing in Planar Graphs 

    Heath, Lenwood S.; Vergara, John Paul C. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1995-10-01)
  • Edge-Packing Planar Graphs by Cyclic Graphs 

    Heath, Lenwood S.; Vergara, John Paul C. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1996-11-01)
  • Education and Design: Using Human-Computer Interaction Case Studies to Learn 

    Hobby, Laurian; McCrickard, D. Scott (Department of Computer Science, Virginia Polytechnic Institute & State University, 2006)
  • Effect of a Sawtooth Boundary on Couette Flow 

    Mateescu, Gabriel; Wang, C. Y.; Ribbens, Calvin J.; Watson, Layne T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1998)
  • Effect of an expansion chamber on the propagation of sound in circular ducts 

    Elsharkawy, A. I.; Nayfeh, Ali H. (American Institute of Physics, 1978-03)
    The present analysis reveals that the performance of an expansion chamber is greatly affected by the expansion ratio, the sound frequency and to a lesser extent the chamber length. This conclusion was verified experimentally. ...
  • effect of bulges on the stability of boundary layers 

    Nayfeh, A. H.; Ragab, S. A.; Almaaitah, A. A. (AIP Publishing, 1988-04)
    The instability of flows around hump and dip imperfections is investigated. The mean flow is calculated using interacting boundary layers, thereby accounting for viscous/inviscid interaction and separation bubbles. Then, ...