Now showing items 41-60 of 4094

    • Abundance and Speciation of Surface Oxygen on Nanosized Platinum Catalysts and Effect on Catalytic Activity 

      Serra-Maia, Rui; Winkler, Christopher; Murayama, Mitsuhiro; Tranhuu, Kevin; Michel, F. Marc (2018-06-18)
      Oxygen at the surface of nanosized platinum has a direct effect on catalytic activity of oxidation−reduction chemical reactions. However, the abundance and speciation of oxygen remain uncertain for platinum with different ...
    • The Academy: A Community of Information Retrieval Agents 

      France, Robert K. (1994-09-06)
      We commonly picture text as a sequence of words; or alternatively as a sequence of paragraphs, each of which is composed of a sequence of sentences, each of which is itself a sequence of words. It is also worth noting that ...
    • Accelerated Corrosion Testing of ASTM A1010 Stainless Steel 

      Hebdon, Matthew H.; Groshek, Isaac (American Institute of Steel Construction, 2018-04-11)
      ASTM A1010 (recently adopted as ASTM A709 Gr50CR) is a material which has advantageous corrosion properties. It is a low-grade stainless steel which forms a protective patina and has been marketed as an alternative to other ...
    • Accelerating Data-Serial Applications on Data-Parallel GPGPUs: A Systems Approach 

      Aji, Ashwin M.; Feng, Wu-chun (Department of Computer Science, Virginia Polytechnic Institute & State University, 2008), TR-08-24
      The general-purpose graphics processing unit (GPGPU) continues to make significant strides in high-end computing by delivering unprecedented performance at a commodity price. However, the many-core architecture of the GPGPU ...
    • Accelerating Electrostatic Surface Potential Calculation with Multiscale Approximation on Graphics Processing Units 

      Anandakrishnan, Ramu; Scogland, Thomas R. W.; Fenley, Andrew T.; Gordon, John; Feng, Wu-chun; Onufriev, Alexey V. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2009), TR-09-15
      Tools that compute and visualize biomolecular electrostatic surface potential have been used extensively for studying biomolecular function. However, determining the surface potential for large biomolecules on a typical ...
    • Accelerating Workloads on FPGAs via OpenCL: A Case Study with OpenDwarfs 

      Verma, Anshuman; Helal, Ahmed E.; Krommydas, Konstantinos; Feng, Wu-chun (Department of Computer Science, Virginia Polytechnic Institute & State University, 2016-05-13), TR-16-04
      For decades, the streaming architecture of FPGAs has delivered accelerated performance across many application domains, such as option pricing solvers in finance, computational fluid dynamics in oil and gas, and packet ...
    • Acceleration Feedback-Based Active and Semi-Active Seismic Response Control of Rail-Counterweight Systems of Elevators 

      Rildova,; Singh, M.P. (Hindawi, 2005-01-01)
      Based on the observations in the past earthquake events, the traction elevators in buildings are known to be vulnerable to earthquake induced ground motions. Among several components of an elevator, the counterweight being ...
    • Accelerometer Based Method for Tire Load and Slip Angle Estimation 

      Singh, Kanwar Bharat; Taheri, Saied (MDPI, 2019-04-28)
      Tire mounted sensors are emerging as a promising technology, capable of providing information about important tire states. This paper presents a survey of the state-of-the-art in the field of smart tire technology, with a ...
    • Acceptance Procedures for New and Quality Control Procedures for Existing Types of Corrosion-Resistant Reinforcing Steel 

      Stephen R. Sharp; Larry J. Lundy; Harikrishnan Nair; Moen, Cristopher D.; Josiah B. Johnson; Sarver, Brian E. (Virginia Center for Transportation Innovation and Research, 2011-06-01)
      As the Virginia Department of Transportation (VDOT) continues to move forward with implementing the use of corrosion-resistant reinforcing (CRR) bars, it is important for VDOT to have a means of characterizing the candidate ...
    • Access Control Design on Highway Interchanges 

      Hesham Rakha; Flintsch, Alejandra Medina; Mazen Arafeh; Abdel-Salam, Abdel-Salam Gomaa; Dhruv Dua; Abbas, Montasir M. (Virginia Center for Transportation Innovation and Research, 2008-01-01)
      The adequate spacing and design of access to crossroads in the vicinity of freeway ramps are critical to the safety and traffic operations of both the freeway and the crossroad. The research presented in this report develops ...
    • Access to Autism Spectrum Disorder Services for Rural Appalachian Citizens 

      Scarpa, Angela; Jensen, Laura S.; Gracanin, Denis; Ramey, Sharon L.; Dahiya, Angela V.; Ingram, L. Maria; Albright, Jordan; Gatto, Alyssa J.; Scott, Jen Pollard; Ruble, Lisa (2020-01)
      Background: Low-resource rural communities face significant challenges regarding availability and adequacy of evidence-based services. Purposes: With respect to accessing evidence-based services for Autism Spectrum ...
    • Accounts from a Claims Reuse Experience: Design of an Airline Fares Tracker 

      Montabert, Cyril; Tarpley, Anderson Ray III (Department of Computer Science, Virginia Polytechnic Institute & State University, 2007-12-01), TR-07-18
      Previous research efforts have led to the establishment of a repository of claims as reusable knowledge entities. Through the analysis, design, and prototyping of a notification system aimed at monitoring airfares across ...
    • Accumulation of di-2-ethylhexyl phthalate from polyvinyl chloride flooring into settled house dust and the effect on the bacterial community 

      Velazquez, Samantha; Bi, Chenyang; Kline, Jeff; Nunez, Susie; Corsi, Rich; Xu, Ying; Ishaq, Suzanne L. (2019-11-22)
      Di-2-ethylhexyl phthalate (DEHP) is a plasticizer used in consumer products and building materials, including polyvinyl chloride flooring material. DEHP adsorbs from material and leaches into soil, water, or dust and ...
    • Accurate and Efficient Gene Function Prediction using a Multi-Bacterial Network 

      Law, Jeffrey N.; Kale, Shiv D.; Murali, T. M. (2019-05-24)
      The rapid rise in newly sequenced genomes requires the development of computational methods to supplement experimental functional annotations. The challenge that arises is to develop methods for gene function prediction ...
    • Achieving Asynchronous Speedup While Preserving Synchronous Semantics: An Implementation of Instructional Footprinting in Linda 

      Landry, Kenneth D.; Arthur, James D. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1993), TR-93-33
      Linda is a coordination language designed to support process creation and inter-process communication within conventional computational languages. Although the Linda paradigm touts architectural and language independence, ...
    • Achieving Very High Order for Implicit Explicit Time Stepping: Extrapolation Methods 

      Constantinescu, Emil M.; Sandu, Adrian (Department of Computer Science, Virginia Polytechnic Institute & State University, 2008-07-01), TR-08-13
      In this paper we construct extrapolated implicit-explicit time stepping methods that allow to efficiently solve problems with both stiff and non-stiff components. The proposed methods can provide very high order discretizations ...
    • Acoustic differences between healthy and depressed people: a cross-situation study 

      Wang, Jingying; Zhang, Lei; Liu, Tianli; Pan, Wei; Hu, Bin; Zhu, Tingshao (2019-10-15)
      Background Abnormalities in vocal expression during a depressed episode have frequently been reported in people with depression, but less is known about if these abnormalities only exist in special situations. In addition, ...
    • Acoustic Effects Accurately Predict an Extreme Case of Biological Morphology 

      Zhang, Z. W.; Truong, S. N.; Müller, Rolf (American Physical Society, 2009-07-17)
      The biosonar system of bats utilizes physical baffle shapes around the sites of ultrasound emission for diffraction-based beam forming. Among these shapes, some extreme cases have evolved that include a long noseleaf ...
    • Acoustic Energy Harvesting and Sensing via Electrospun PVDF Nanofiber Membrane 

      Shehata, Nader; Hassanin, Ahmed H.; Elnabawy, Eman; Nair, Remya; Bhat, Sameer A.; Kandas, Ishac (MDPI, 2020-05-31)
      This paper introduces a new usage of piezoelectric poly (vinylidene fluoride) (PVDF) electrospun nanofiber (NF) membrane as a sensing unit for acoustic signals. In this work, an NF mat has been used as a transducer to ...
    • Acoustic performance of a stretched membrane and porous blanket combination 

      Thomas, W. A., Jr.; Hurst, Charles J. (Acoustical Society of America, 1976)
      The sound absorption performance of an acoustic absorber consisting of a stretched circular membrane placed a short distance in front of a fiberglass blanket was both measured and predicted. Both theoretical and experimental ...