Now showing items 3710-3729 of 3845

    • Variability of User Interaction with Multi-Platform News Feeds 

      Chhatpar, Chandresh; Lambros, Stelios; Pérez-Quiñones, Manuel A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2004), TR-04-22
      The development of the World Wide Web (WWW) and proliferation of web enabled devices have allowed various news agencies to enrich their traditional method of distribution of news through TV, radio and print with simultaneous ...
    • Variable Volumetric Stiffness Fluid Mount Design 

      Vahdati, Nader; Ahmadian, Mehdi (Hindawi, 2004-01-01)
      Passive fluid mounts are commonly used in the automotive and aerospace applications to isolate the cabin from the engine noise and vibration. Due to manufacturing and material variabilities, no two identical fluid mount ...
    • Variable-Complexity Response Surface Approximations for Wing Structural Weight in HSCT Design 

      Kaufman, Matthew; Balabanov, Vladimir; Burgee, Susan L.; Giunta, Anthony A.; Grossman, Bernard; Haftka, Raphael T.; Mason, William H.; Watson, Layne T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1996), TR-96-03
      A procedure for generating and using a polynomial approximation to wing bending material weight of a High Speed Civil Transport (HSCT) is presented. Response surface methodology is used to fit a quadratic polynomial to ...
    • A Variant of the Fisher-Morris Garbage Compaction Algorithm 

      Martin, Johannes J. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1980), CS80006-R
      The garbage compactification algorithm described works in linear time and, for the most part, does not require any work space. It combines marking and compactification into a two-step algorithm. The first step marks all ...
    • The Variety of Ways in Which Instructors Implement a Modular Digital Library Curriculum 

      Wildemuth, Barbara M.; Pomerantz, Jeffrey P.; Oh, Sanghee; Yang, Seungwon; Fox, Edward A. (2009-05-14)
      This poster illustrates how information professionals can implement a modular digital library curriculum. It discusses instructors' perspectives on digital library syllabi, assignments, readings, and overall course content. ...
    • Varsity Football Helmet STAR Protocol 

      Tyson, Abigail M.; Rowson, Steven (Virginia Tech, 2018-03-30)
      This document details the protocol used to rate adult football helmets based on concussion risk according to the Virginia Tech Helmet Ratings.
    • Varying Collimation for Dark-Field Extraction 

      Wang, Ge; Cong, Wenxiang; Shen, Haiou; Zou, Yu (Hindawi, 2010-02-16)
      Although x-ray imaging is widely used in biomedical applications, biological soft tissues have small density changes, leading to low contrast resolution for attenuation-based x-ray imaging. Over the past years, x-ray ...
    • Vectorization Experiment on the IBM 3090 Vector Facility 

      Weimar, Joerg Richard (Department of Computer Science, Virginia Polytechnic Institute & State University, 1990), TR-90-14
      A comparison between sequential code and vectorization code for matrix multiplication is made and the possible ways to vectorize matrix multiplication are examined. The result is that vectorization of the correct loop ...
    • Vehicle Dynamics in Currents 

      Woolsey, C. (Virginia Center for Autonomous Systems, 2011)
      Vehicles operating in non-uniform flow fields are subject to forces and moments that are not captured by kinematic motion models. These effects are even greater when the mass of the displaced fluid is commensurate with the ...
    • Vehicle fleet emissions of black carbon, polycyclic aromatic hydrocarbons, and other pollutants measured by a mobile laboratory in Mexico City 

      Jiang, M.; Marr, Linsey C.; Dunlea, E. J.; Herndon, S. C.; Jayne, J. T.; Kolb, C. E.; Knighton, W. B.; Rogers, T. M.; Zavala, M.; Molina, L. T.; Molina, M. J. (Copernicus Publications, 2005-12-01)
      Black carbon ( BC) and polycyclic aromatic hydrocarbons (PAHs) are of concern due to their effects on climate and health. The main goal of this research is to provide the first estimate of emissions of BC and particle-phase ...
    • Vehicular Access Doors under Hurricane Force Wind Pressure: Analysis Methods and a Design Tool 

      Janas, Matthew; Moen, Cristopher Dennis (Virginia Polytechnic Institute and State University, 2011-08-01)
      It is essential that rolling sheet metal access doors in metal buildings, and the door jambs they are attached to, resist high pressures during an extreme wind event. Catastrophic damage to the building and its contents ...
    • Vehicular Access Doors under Hurricane Force Wind Pressure: Experiments to Study Jamb Behavior 

      Gao, Tian; Moen, Cristopher Dennis (Virginia Polytechnic Institute and State University, 2012-03-01)
      In August of 2009, two 10 ft by 10 ft DBCI 5000 vehicular access doors were tested with a simulated hurricane force wind pressure at the DBCI in Douglasville, GA (Gao and Moen 2009). After evaluating the results from this ...
    • Velocity and geometry of propagating fronts in complex convective flow fields 

      Mukherjee, Saikat; Paul, Mark (American Physical Society, 2019-01-22)
      We numerically study the propagation of reacting fronts through three-dimensional flow fields composed of convection rolls that include time-independent cellular flow, spatiotemporally chaotic flow, and weakly turbulent ...
    • Verification and Validation: What Impact Should Project Size and Complexity Have on Attendant V&V Activities and Supporting Infrastructure? 

      Arthur, James D.; Sargent, Robert G.; Dabney, James B; Law, Averill M; Morrison, John D. (Jack) (Department of Computer Science, Virginia Polytechnic Institute & State University, 1999-11-01), TR-99-06
      The size and complexity of Modeling and Simulation (M&S) application continue to grow at a significant rate. The focus of this panel is to examine the impact that such growth should have on attendant Verification and ...
    • vi-HMM: a novel HMM-based method for sequence variant identification in short-read data 

      Tang, Man; Hasan, Mohammad Shabbir; Zhu, Hongxiao; Zhang, Liqing; Wu, Xiaowei (2019-02-13)
      Abstract Background Accurate and reliable identification of sequence variants, including single nucleotide polymorphisms (SNPs) and insertion-deletion polymorphisms (INDELs), ...
    • Vibration and dynamic response control of cantilevers carrying externally mounted stores 

      Librescu, Liviu; Na, Sungsoo (Acoustical Society of America, 1997-12-01)
      The vibrational and dynamic response control of cantilevers carrying externally mounted stores is investigated, The cantilevered structure is modeled as a thin-walled beam of arbitrary cross section and incorporates a ...
    • Vibration and Dynamic Response Control of Nonuniform Composite Rotating Blades 

      Na, Sungsoo; Librescu, Liviu; Rim, Sung-Nam; Yoon, Gwon-Chan (Hindawi, 2006-05-08)
      This paper addresses the free vibration, dynamic response, and theactive control of composite rotating pretwisted blades modeled asnonuniform thin-walled beams, fixed at the hub at a settingangle, and incorporating ...
    • Vibration-based gait analysis via instrumented buildings 

      Kessler, Ellis; Malladi, Vijaya V.N. Sriram; Tarazaga, Pablo Alberto (Sage, 2019-09-11)
      Gait analysis is an invaluable tool in diagnosing and monitoring human health. Current techniques often rely on specialists or expensive gait measurement systems. There is a clear space in the field for a simple, inexpensive, ...
    • Vindel: a simple pipeline for checking indel redundancy 

      Li, Zhiyi; Wu, Xiaowei; He, Bin; Zhang, Liqing (Biomed Central Ltd, 2014-11-19)
      Background With the advance of next generation sequencing (NGS) technologies, a large number of insertion and deletion (indel) variants have been identified in human populations. Despite much research into variant calling, ...
    • Virginia Disc 2: Preparing, Presenting and Retrieving MARC StandardLibrary Data on a CDROM 

      Quizon, Paul B.; Fox, Edward A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1990), TR-90-05
      Most of today's commercial information storage systems are stilled based on Boolean queries and inverted files despite the recent advances in information retrieval research. This report discusses the creation on the CDROM ...