Now showing items 273-292 of 57563

    • 5-6 GHz RFIC Front-End Components in Silicon Germanium HBT Technology 

      Johnson, Daniel Austin (Virginia Tech, 2001-04-12)
      In 1997 the Federal Communications Commission (FCC) released 300 MHz of spectrum between 5-6 GHz designated the unlicensed national information infrastructure (U-NII) band. The intention of the FCC was to provide an unlicensed ...
    • A 5-6 Ghz Silicon-Germanium Vco With Tunable Polyphase Outputs 

      Sanderson, David Ivan (Virginia Tech, 2003-04-24)
      In-phase and quadrature (I/Q) signal generation is often required in modern transceiver architectures, such as direct conversion or low-IF, either for vector modulation and demodulation, negative frequency recovery in ...
    • 50-kHz-rate 2D imaging of temperature and H2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography 

      Ma, Lin; Li, Xuesong; Sanders, Scott T.; Caswell, Andrew W.; Roy, Sukesh; Plemmons, David H.; Gord, James R. (Optical Society of America, 2013-01-01)
      This paper describes a novel laser diagnostic and its demonstration in a practical aero-propulsion engine (General Electric J85). The diagnostic technique, named hyperspectral tomography (HT), enables simultaneous 2-dimensional ...
    • 50-kHz-rate 2D imaging of temperature and H2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography 

      Ma, Lin; Li, Xuesong; Sanders, Scott T.; Caswell, Andrew W.; Roy, Sukesh; Plemmons, David H.; Gord, James R. (Optics Express, 2013-01-14)
      This paper describes a novel laser diagnostic and its demonstration in a practical aero propulsion engine (General Electric J85). The diagnostic technique, named hyperspectral tomography (HT), enables simultaneous 2-dimensional ...
    • 500 million years of errors: Shells of brachiopods record shadow of arms race in ancient oceans 

      Trulove, Susan (Virginia Tech. University Relations, 2005-06-16)
      A study of fossils from the Paleozoic Era, collected across the world, reveals that ancient brachiopods were little bothered by predators. However, the rare predation traces left on brachiopod shells by unknown assailants ...
    • 55 ways to save at the grocery store 

      Cox, Ruby Hurley (Virginia Cooperative Extension, 2002)
    • 5K Dash for the Cure to benefit cancer society April 21 

      Kropff, Catherine L. (Virginia Tech. University Relations, 2007-04-09)
      Virginia Tech Recreational Sports, along with event sponsors University Bookstore and Volume II Bookstore, will host the 5K Dash for the Cure on Saturday, April 21 prior at 10 a.m., just prior to the Spring Football game.
    • 5SGraph: A Modeling Tool for Digital Libraries 

      Zhu, Qinwei (Virginia Tech, 2002-11-18)
      The high demand for building digital libraries by non-experts requires a simplified modeling process and rapid generation of digital libraries. To enable rapid generation, digital libraries should be modeled with descriptive ...
    • 5SL: A Language for Declarative Specification and Generation of Digital Libraries 

      Goncalves, Marcos A.; Fox, Edward A. (2002-07-01)
      Digital Libraries (DLs) are among the most complex kinds of information systems, due in part to their intrinsic multi-disciplinary nature. Nowadays DLs are built within monolithic, tightly integrated, and generally inflexible ...
    • 6 houses for John Travolta and friends 

      Lo, Bennett C (Virginia Polytechnic Institute and State University, 1995)
    • A 60 Ghz Mmic 4x Subharmonic Mixer 

      Chapman, Michael Wayne (Virginia Tech, 2000-10-31)
      In this modern age of information, the demands on data transmission networks for greater capacity, and mobile accessibility are increasing drastically. The increasing demand for mobile access is evidenced by the proliferation ...
    • 7-deoxy-6-substituted paclitaxels 

      Virginia Tech Intellectual Properties, Inc.; Bristol-Myers Squibb Company; Kadow, John F.; Kingston, David G.; Wittman, Mark D.; Altstadt, Thomas J.; Liang, Xian (United States Patent and Trademark Office, 1998-06-30)
      The present invention concerns novel paclitaxel derivatives, their use as antitumor agents, and pharmaceutical formulations.
    • The 7th Virginia Infantry Regiment, C.S.A 

      Hitt, Louis Ford (Virginia Polytechnic Institute and State University, 1972)
    • An 8 GHz Ultra Wideband Transceiver Testbed 

      Agarwal, Deepak (Virginia Tech, 2005-10-07)
      Software defined radios have the potential of changing the fundamental usage model of wireless communications devices, but the capabilities of these transceivers are often limited by the speed of the underlying processors ...
    • 8 Tips for Transitioning to Organic Production 

      Sanchez, Elsa (Virginia Cooperative Extension, 2009)
      Advises farmers on how to change from conventional farming methods to those that are suitable for successful organic farming
    • 930 sqft of Architecture 

      Clark, David Bradley (Virginia Tech, 2008-10-20)
      There is no primacy to Architecture.

      For centuries architects have posited formulaic approaches to creating spatial environments. Bold maxims for design have defined entire periods and styles of architecture, and each ...

    • The 9th Virginia Infantry Regiment, C.S.A. 

      Trask, Benjamin H. (Virginia Tech, 1981)
    • A "law of nature": The command-and-control approach 

      Elazegui, Dulce D.
      This paper gives perspectives on the command-and-control approach to environmental management drawing heavily from the book of Field (1994). It points to a number of factors that contribute to the success or failure of ...
    • a 10 kpc scale seyfert galaxy outflow: hst/cos observations of iras f22456-5125 

      Borguet, B. C. J.; Edmonds, D.; Arav, N.; Dunn, J.; Kriss, G. A. (IOP Publishing Ltd., 2012-06)
      We present analysis of the UV spectrum of the low-z AGN IRAS F22456-5125 obtained with the Cosmic Origins Spectrograph on board the Hubble Space Telescope. The spectrum reveals six main kinematic components, spanning a ...
    • A APRENDIZAGEM DE ONDAS SONORAS SOB A ÓTICA DE DESAFIOS EM UM AMBIENTE VIRTUAL POTENCIALMENTE SIGNIFICATIVO 

      Diogo, Rodrigo Claudino (2008-02-12)
      Este trabalho buscou verificar se as tecnologias da informação e comunicação podem ser utilizadas como meios potencialmente significativos para se efetivar a aprendizagem significativa de conceitos introdutórios de Física ...