Now showing items 3749-3768 of 3908

    • Using high-speed texture measurements to improve the uniformity of hot-mix asphalt 

      McGhee, Kevin K.; Flintsch, Gerardo W.; de León Izeppi, Edgar (Virginia Center for Transportation Innovation and Research, 2003-05-01)
      This study introduces Virginia's efforts to apply high-speed texture measurement as a tool to improve the uniformity of hot-mix asphalt (HMA) pavements. Three approaches for detecting and quantifying HMA segregation through ...
    • Using Interactive Maps in Community Applications 

      Schafer, Wendy A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2001), TR-01-07
      Interactive maps provide unique ways to support community applications. In particular, they enable new collaborative activities. Map-based navigation supports a community environment as well as virtual tours. Interactive ...
    • Using Pinch Gloves(TM) for both Natural and Abstract Interaction Techniques in Virtual Environments 

      Bowman, Doug A.; Wingrave, Chadwick A.; Campbell, J. B.; Ly, Vinh Q. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2001), TR-01-23
      Usable three-dimensional (3D) interaction techniques are difficult to design, implement, and evaluate. One reason for this is a poor understanding of the advantages and disadvantages of the wide range of 3D input devices, ...
    • Using power fingerprinting (PFP) to monitor the integrity and enhance security of computer based systems 

      Electrical and Computer Engineering; Virginia Tech Intellectual Properties, Inc.; Reed, Jeffrey H.; Aguayo Gonzalez, Carlos R. (United States Patent and Trademark Office, 2017-01-31)
      Procedures are described for enhancing target system execution integrity determined by power fingerprinting (PFP): by integrating PFP into the detection phase of comprehensive defense-in-depth security; by deploying a ...
    • Using power fingerprinting (PFP) to monitor the integrity and enhance security of computer based systems 

      Electrical and Computer Engineering; Virginia Tech Intellectual Properties, Inc.; Reed, Jeffrey H.; Aguayo Gonzalez, Carlos R. (United States Patent and Trademark Office, 2016-02-16)
      Procedures are described for enhancing target system execution integrity determined by power fingerprinting (PFP): by integrating PFP into the detection phase of comprehensive defense-in-depth security; by deploying a ...
    • Using power fingerprinting (PFP) to monitor the integrity and enhance security of computer based systems 

      Electrical and Computer Engineering; Virginia Tech Intellectual Properties, Inc.; Reed, Jeffrey H.; Aguayo Gonzalez, Carlos R. (United States Patent and Trademark Office, 2017-01-31)
      Procedures are described for enhancing target system execution integrity determined by power fingerprinting (PFP): by integrating PFP into the detection phase of comprehensive defense-in-depth security; by deploying a ...
    • Using Process Definition and Analysis Techniques to Reduce Errors and Improve Efficiency in the Delivery of Healthcare 

      Clarke, Lori; Osterweil, Leon (2013-04-25)
      As has been widely reported in the news lately, heathcare errors are a major cause of death and suffering, and healthcare inefficiencies result in escalating costs. In the University of Massachusetts Medical Safety Project, ...
    • Using Reflection for Implementing ICOM, an Interoperable Common Object Model 

      Challa, Siva; Kafura, Dennis G. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1995-12-01), TR-95-23
      Reuse of already developed object-oriented software components is reduced when software is written in different object-oriented languages, or when it is not easy to relocate the software components from one machine to ...
    • Using startup of steady shear flow in a sliding plate rheometer to determine material parameters for the purpose of predicting long fiber orientation 

      Ortman, Kevin; Baird, Donald G.; Wapperom, Peter; Whittington, Abby R. (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, M. R.; Gaze, W. H.; Pruden, Amy; Smalla, K.; Tiedje, J. M.; Zhu, Y.-G. (Nature Publishing Group, 2015-06-01)
      Around all human activity, there are zones of pollution with pesticides, heavy metals, pharmaceuticals, personal care products and the microorganisms associated with human waste streams and agriculture. This diversity of ...
    • 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 

      Electrical and Computer Engineering; Center for Power Electronics Systems (CPES); 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 ...