Now showing items 3470-3489 of 3610

    • Using startup of steady shear flow in a sliding plate rheometer to determine material parameters for the purpose of predicting long fiber orientation 

      Ortman, K.; Baird, Donald G.; Wapperom, P.; Whittington, A. (AIP Publishing, 2012-07-01)
      The properties of long glass fiber reinforced parts, such as those manufactured by means of injection molding and compression molding, are highly dependent on the fiber orientation generated during processing. A sliding ...
    • Using the class 1 integron-integrase gene as a proxy for anthropogenic pollution 

      Gillings, MR; Gaze, WH; Pruden, A; Smalla, K; Tiedje, JM; Zhu, Y-G (Nature Publishing Group, 2015-06-01)
    • Using the Repository Explorer to Archive OAI Protocol Compliance 

      Suleman, Hussein (2001-06-24)
      The Open Archives Initiative (OAI) is dedicated to solving problems of digital library interoperability by defining simple protocols, most recently the Open Archives Initiative Protocol for Metadata Harvesting [2], which ...
    • Using transient shear rheology to determine material parameters in fiber suspension theory 

      Eberle, A. P. R.; Baird, Donald G.; Wapperom, P.; Velez-Garcia, G. M. (AIP Publishing, 2009-05-01)
      Fiber suspension theory model parameters for use in the simulation of fiber orientation in complex flows are, in general, either calculated from theory or fit to experimentally determined fiber orientation generated in ...
    • Using Virtual Environments in the Teaching of Computer Graphics 

      Bowman, Doug A.; Chennupati, Balaprasuna; Gracey, Matthew; Pinho, Marcio S.; Wheeler, Kristin J. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2003), TR-03-19
      Education has long been touted as an appropriate application area for immersive virtual environments (VEs), but few immersive applications have actually been used in the classroom, and even fewer have been compared empirically ...
    • Usort: An Efficient Hybrid of Distributive Partitioning Sorting 

      Allison, Donald C. S.; Noga, M. T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1981), CS81012-R
      A new hybrid of Distributive Partitioning Sorting is described and tested against Quicksort on uniformly distributed items. Pointer sort versions of both algorithms are also tested.
    • V^2 power converter control with capacitor current ramp compensation 

      Virginia Tech Intellectual Properties, Inc.; Liu, Pei-Hsin; Lee, Fred C.; Yan, Yingyi (United States Patent and Trademark Office, 2017-03-21)
      Operation of a switching power converter having an output capacitor having a small equivalent series resistance (ESR) is stabilized and jitter reduced by sensing capacitor current with gain and combining the resulting ...
    • Vacuum response and gas leak detection in piezoelectrically driven sound-resonance cavity 

      Dong, Shuxiang; Bai, Feiming; Yan, Li; Cao, Hu; Li, Jiefang; Viehland, Dwight D. (AIP Publishing, 2004-05-01)
      It has been found that a piezoelectrically driven sound-resonance cavity (PSRC) is quite sensitive to low-pressure changes: a change from ambient to vacuum (67 Pa) conditions results in a 89degrees phase shift and a -81% ...
    • Validation of Expert System Performance 

      Balci, Osman; Smith, Eric P. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1986), TR-86-37
      Most definitions of an expert system include some reference to the ability of the system to perform at a level close to human expert performance. Yet the validation of expert systems, that is, the testing of systems so as ...
    • Validation of Multivariate Response Simulation Models by Using Hotelling's Two-sample T^2 Test 

      Balci, Osman; Sargent, Robert G. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1981), CS81016-R
      A procedure is developed by using Hotelling's two-sample T^2 test to test the validity of a multivariate response simulation model that represents an observable system. The validity of the simulation model is tested with ...
    • Validation of Multivariate Response Trace-driven Simulation Models 

      Balci, Osman; Sargent, Robert G. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1982), CS82005-R
      A procedure is developed by using Rotelling's one-sample T^2 test to test the validity of a multivariate response trace-driven simulation model that represents an observable system. The vali- dity of the simulation model ...
    • Validation of Underwater Sensor Package Using Feature Based SLAM 

      Cain, Christopher; Leonessa, Alexander (MDPI, 2016-03-17)
      Robotic vehicles working in new, unexplored environments must be able to locate themselves in the environment while constructing a picture of the objects in the environment that could act as obstacles that would prevent ...
    • Validation, Verification, and Testing Techniques Throughout the Life Cycle of a Simulation Study 

      Unknown author (Department of Computer Science, Virginia Polytechnic Institute & State University, 1994-08-01), TR-94-08
      Life cycle validation, verification, and testing (VV&T) is extremely important for the success of a simulation study. This paper surveys current software VV&T techniques and current simulation model VV&T techniques and ...
    • Validity and Repeatability of Single-Sensor Loadsol Insoles during Landing 

      Peebles, Alexander T.; Maguire, Lindsay A.; Renner, Kristen E.; Queen, Robin M. (MDPI, 2018-11-22)
      Clinically feasible methods for quantifying landing kinetics could help identify patients at risk for secondary anterior cruciate ligament injuries. The purpose of this study was to evaluate the validity and between-day ...
    • 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.