Now showing items 2883-2902 of 3883

    • A Process for Producing Tactually Perceptible Images of Line Drawings for Use by the Blind 

      Williams, Charles M. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1974), CS74031-R
      A working prototype computer controlled process is described for automatically converting line drawings into raised line images perceptible to the touch. The process uses an automatic digitizer for input and a milling ...
    • Process-Guided Deep Learning Predictions of Lake Water Temperature 

      Read, Jordan S.; Jia, Xiaowei; Willard, Jared; Appling, Alison P.; Zwart, Jacob A.; Oliver, Samantha K.; Karpatne, Anuj; Hansen, Gretchen J. A.; Hanson, Paul C.; Watkins, William; Steinbach, Michael; Kumar, Vipin (2019-11-08)
      The rapid growth of data in water resources has created new opportunities to accelerate knowledge discovery with the use of advanced deep learning tools. Hybrid models that integrate theory with state-of-the art empirical ...
    • Processing method for grain-oriented lead-free piezoelectric Na0.5Bi0.5TiO3—BaTiO3 ceramics exhibiting giant performance 

      Mechanical Engineering; Institute for Critical Technology and Applied Science (ICTAS); Virginia Tech Intellectual Properties, Inc.; Priya, Shashank; Maurya, Deepam (United States Patent and Trademark Office, 2017-09-26)
      Textured ceramic compositions having improved piezoelectric characteristics as compared with their random counterparts are provided. Methods of making the compositions and devices using them are also included. More ...
    • Processing of PbTiO3 thin films. I. in situ investigation of formation kinetics 

      Li, C. C.; Desu, Seshu B. (American Institute of Physics, 1996-01-01)
      A novel in situ stress measurement technique to study the formation kinetics of multicomponent oxide thin films was developed and was applied to PbTiO3. Single phase PbTiO3 thin films were formed from the reaction between ...
    • Processing of PbTiO3 thin films. II. in situ investigation of stress relaxation 

      Li, C. C.; Desu, Seshu B. (American Institute of Physics, 1996-01-01)
      Stress relaxation in PbTiO3 films was investigated by the in situ stress measurement technique. A simple viscous flow model was successfully used to interpret the kinetics and behavior of stress relaxation of PbTiO3 thin ...
    • Processing of PbTiO3 thin films. III. Effects of ion bombardment 

      Li, C. C.; Desu, Seshu B. (American Institute of Physics, 1996-01-01)
      The effects of ion bombardment on multicomponent oxides, such as PbTiO3, and multilayer systems have been extensively studied by an in situ stress measurement technique. Energetic ion bombardment was found to accelerate ...
    • A Processor Utilization Model for a Multiprocessor Computer System 

      Nance, Richard E. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1975), CS75016-R
      A processor utilization model for a simplified multiprocessor computer system is developed. Jobs are assumed to arrive according to a general input process, and each job is assigned randomly to an available processor. A ...
    • Professionalism in Computing: A Web-Based Learning System 

      Computer Science (Department of Computer Science, Virginia Polytechnic Institute & State University, 1997-03-01), TR-97-05
      Starting from a project to develop a digital library for a Computer Science course studying social impact and computer ethics, a highly interactive Web-based learning system is in the process of development. Capable of ...
    • Program Testing and Conditional Correctness 

      Martin, Johannes J. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1976), CS76007-R
      It is shown that some beliefs about program testing are incorrect. A new notion of correctness, conditional correctness, is defined. It is then shown that conditional correctness, which can in principle be achieved by ...
    • Programming Environments 

      Lee, John A. N. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1983), CS83027-R
      This report examines in detail the contents of the environments which are established during the progression of design, check-out and execution of a program. The level of support given by vendors to the elements of these ...
    • Programming Environments for Multidisciplinary Grid Communities 

      Ramakrishnan, Naren; Watson, Layne T.; Kafura, Dennis G.; Ribbens, Calvin J.; Shaffer, Clifford A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2001-07-01), TR-01-14
      Rapid advances in technological infrastructure as well as the emphasis on application support systems have signaled the maturity of grid computing. Today’s grid computing environments (GCEs) extend the notion of a programming ...
    • Progress in Dual (Piezoelectric-Magnetostrictive) Phase Magnetoelectric Sintered Composites 

      Adnan Islam, Rashed; Priya, Shashank (Hindawi, 2012-04-04)
      The primary aims of this review article are (a) to develop the fundamental understanding of ME behavior in perovskite piezoelectric-spinel magnetostrictive composite systems, (b) to identify the role of composition, ...
    • Progress Towards a World-Wide Code of Conduct 

      Lee, John A. N.; Berleur, Jacques (Department of Computer Science, Virginia Polytechnic Institute & State University, 1995-04-01), TR-95-06
      In this paper, the work of the International Federation for Information Processing (IFIP) Task Force on Ethics is described and the recommendations presented to the General Assembly are reviewed. While a common code of ...
    • Project GEOSIM: The First Two Modules 

      Shaffer, Clifford A.; Carstensen, Laurence William Jr.; Miranda, Vincent F.; Kriss, Sheryl A.; Morrill, Robert W.; Fox, Edward A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1991), TR-91-26
      We present our initial report on Project GeoSim: a multidisciplinary effort involving members of the Departments of Geography and Computer Science at Virginia Tech to develop computer-aided instruction (CAI) software for ...
    • A Project Oriented Course on Software Engineering 

      Henry, Sallie M. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1990), TR-90-23
      An undergraduate course in Software Engineering has been offered at the University of Wisconsin-LaCrosse for the past three years. The intent of the course is to present a broad overview of most of the areas of Software ...
    • The Promise (and Reality) of Multidisciplinary Design Optimization 

      Burgee, Susan L.; Watson, Layne T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1995-08-01), TR-95-13
      Modern aerospace vehicle design requires the interaction of multiple disciplines, traditionally processed in a sequential order. Multidisciplinary optimization (MDO), a formal methodology for the integration of these ...
    • Promoting Service Design as a Critical Lens within HCI 

      Zimmerman, John (2015-02-06)
      HCI has a history of adding critical lenses in reaction to the kinds of things it makes. It started with a narrow focus on usability and then added a user-centered design (UCD) lens in order create tools that made people ...
    • Proof Testing a Bridge Deck Design with Glass Fiber Reinforced Polymer Bars as Top Mat of Reinforcement 

      Jason K. Cawrse; Roberts-Wollmann, Carin L. (Virginia Center for Transportation Innovation and Research, 2003-06-01)
      The primary objective of this project was to test a full-scale prototype of a bridge deck design containing glass fiber reinforced polymer (GFRP) bars as the top mat of reinforcement. The test deck mimics the design of the ...
    • Propagating fronts in fluids with solutal feedback 

      Mukherjee, Saikat; Paul, Mark (American Physical Society, 2020-03-25)
      We numerically study the propagation of reacting fronts in a shallow and horizontal layer of fluid with solutal feedback and in the presence of a thermally driven flow field of counterrotating convection rolls. We solve ...
    • Propagation of spinning acoustic modes in partially choked converging ducts 

      Nayfeh, Ali H.; Kelly, Jeffrey J.; Watson, Layne T. (Acoustical Society of America, 1982-04-01)
      A computer model based on the wave-envelope technique is used to study the propagation of spinning acoustic modes in converging hard-walled and lined circular ducts carrying near sonic mean flows. The results show that ...