Now showing items 1424-1443 of 3883

    • Fractal Analysis on Asphalt Mixture Using a Two-Dimensional Imaging Technique 

      Hou, Yue; Huang, Yucheng; Sun, Fengyan; Guo, Meng (Hindawi, 2016-11-15)
      Fractal is a mathematical set that has a fractal dimension which usually exceeds its topological dimension and may be nonintegral. Since the asphalt pavement texture has limitations of randomness and self-similarity, fractal ...
    • Fractal cluster modeling of the fatigue behavior of lead zirconate titanate 

      Priya, Shashank; Kim, Hyeoung Woo; Ryu, Jungho; Uchino, Kenji; Viehland, Dwight D. (AIP Publishing, 2002-03-01)
      The fatigue behavior of lead zirconate titanate ceramics (PZT) has been studied under electrical and mechanical drives. Piezoelectric fatigue was studied using a mechanical method. Under ac mechanical drive, hard and soft ...
    • Fracture Resilience and Redundancy of Built-up Steel Girders 

      Hebdon, Matthew H.; Connor, Robert J. (American Institute of Steel Construction, 2016-04-15)
      Internal member redundancy provides built-up steel girders with the ability to resist total member failure in the event an individual component fails. Anecdotal evidence of in- service performance has historically shown ...
    • Fragile phase stability in (1-x)Pb(Mg1/3Nb2/3O3)-xPbTiO(3) crystals: A comparison of 001 and 110 field-cooled phase diagrams 

      Cao, Hu; Li, Jiefang; Viehland, Dwight D.; Xu, Guangyong (American Physical Society, 2006-05-09)
      Phase diagrams of [001] and [110] field-cooled (FC) (1-x)Pb(Mg1/3Nb2/3O3)-xPbTiO(3) or PMN-xPT (0.15 <= x <= 0.38) crystals have been constructed, based on high-resolution x-ray diffraction data. Comparisons reveal several ...
    • A Frame-Based Language in Information Retrieval 

      Weaver, Marybeth T.; France, Robert K.; Chen, Qi-Fan; Fox, Edward A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1988), TR-88-25
      With the advent of the information society, many researchers are turning to artificial intelligence techniques to provide effective retrieval over large bodies of textual information. Yet any AI system requires a formalism ...
    • Frame-Based Stereotactic Biopsy of Canine Brain Masses: Technique and Clinical Results in 26 Cases 

      Rossmeisl, John H., Jr.; Andriani, Rudy T.; Cecere, Thomas E.; Lahmers, Kevin K.; LeRoith, Tanya; Zimmerman, Kurt L.; Gibo, Denise; Debinski, Waldemar (2015)
      This report describes the methodology, diagnostic yield, and adverse events (AE) associated with frame-based stereotactic brain biopsies (FBSB) obtained from 26 dogs with solitary forebrain lesions. Medical records were ...
    • A Framework for Assessing the Adequacy and Effectiveness of software development methodologies 

      Arthur, James D.; Nance, Richard E. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1991), TR-91-28
      A framework for evaluating software development methodologies is described. Beginning with the issue of what constitutes a methodology, an evaluation procedure is presented that exploits defined linkages among objectives, ...
    • A Framework for Building Open Digital Libraries 

      Suleman, Hussein; Fox, Edward A. (Corporation for National Research Initiatives, 2001-12-01)
      Digital libraries (DLs) have traditionally been positioned at the intersection of library science, computer science, and networked information systems. The different underlying philosophies of these three fields has had ...
    • A framework for evaluating epidemic forecasts 

      Tabataba, Farzaneh Sadat; Chakraborty, Prithwish; Ramakrishnan, Naren; Venkatramanan, Srinivasan; Chen, Jiangzhuo; Lewis, Bryan; Marathe, Madhav (2017-05-15)
      Abstract Background Over the past few decades, numerous forecasting methods have been proposed in the field of epidemic forecasting. Such methods can be classified into different ...
    • A Framework for Precise, Reusable Task Abstractions 

      Hartson, H. Rex; Mayo, Kevin A. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1994-03-01), TR-94-11
      This paper is about modeling human-computer interaction for better understanding of interaction, leading to better designs and design representations. We argue for a structured approach to task abstractions that includes ...
    • A Framework for the Expansion of Spatial Features Based on Semantic Footprints 

      Dos Santos Jr, Raimundo F.; Boedihardjo, Arnold P.; Lu, Chang-Tien (Department of Computer Science, Virginia Polytechnic Institute & State University, 2011), TR-11-07
      Geographic feature expansion is a common task in Geographic Information Systems (GIS). Identifying and integrating geographic features is a challenging task since many of their spatial and non-spatial properties are described ...
    • A Framework for the Study of Query Decomposition for Heterogeneous Distributed Database Management Systems 

      Triantis, Konstantinos P.; Egyhazy, Csaba J. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1987), TR-87-31
      This paper presents a framework for the study of the query decomposition translation for heterogeneous record -oriented database management systems. This framework is based on the applied database logic representation of ...
    • A Framework to Analyze the Performance of Load Balancing Schemes for Ensembles of Stochastic Simulations 

      Ahn, Tae-Hyuk; Sandu, Adrian; Watson, Layne T.; Shaffer, Clifford A.; Cao, Yang; Baumann, William T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2012), TR-12-06
      Ensembles of simulations are employed to estimate the statistics of possible future states of a system, and are widely used in important applications such as climate change and biological modeling. Ensembles of runs can ...
    • Free Rotation of a Circular Ring with an Unbalanced Mass 

      Watson, Layne T.; Wang, Chang Y. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1988-05-01), TR-88-01
      Large space structures are much more flexible than their terrestrial counterparts. Rotation of large space structures may be desirable for stability, thermal or artificial gravity reasons. Previous literature includes the ...
    • Frequency-Estimation-Based Signal-Processing Algorithm For White-Light Optical Fiber Fabry-Perot Interferometers 

      Shen, F. B.; Wang, Anbo (Optical Society of America, 2005)
      A novel signal-processing algorithm based on frequency estimation of the spectrogram of single-mode optical fiber Fabry-Perot interferometric sensors under white-light illumination is described. The frequency-estimation ...
    • Friction of Extensible Strips: an Extended Shear Lag Model with Experimental Evaluation 

      Mojdehi, Ahmad R.; Holmes, Douglas P.; Williams, Christopher B.; Long, Timothy E.; Dillard, David A. (2016-02-22)
    • From Cluster to Grid: A Case Study in Scaling-Up a Molecular Electronics Simulation Code 

      Ribbens, Calvin J.; Bora, Prachi; Di Ventra, Massimiliano; Hauck, J.; Prabhakar, Sandeep; Taylor, C. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2002-11-01), TR-02-27
      This paper describes an ongoing project whose goal is to significantly improve the performance and applicability of a molecular electronics simulation code. The specific goals are to (1) increase computational performance ...
    • From Landscapes to Waterscapes: A PSE for Landuse Change Analysis 

      Rubin, E.J.; Diet, R.; Chanat, J.; Speir, C.; Dymond, Randel L.; Lohani, Vinod K.; Kibler, David F.; Bosch, D. D.; Shaffer, Clifford A.; Ramakrishnan, Naren; Watson, Layne T. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2000), TR-00-09
      We describe the design and implementation of L2W — a problem solving environment (PSE) for landuse change analysis. L2W organizes and unifies the diverse collection of software typically associated with ecosystem models ...
    • From yards to cities: a simple and generalizable probabilistic framework for upscaling outdoor water conservation behavior 

      Grant, Stanley B.; Duong, Kimberly; Rippy, Megan A.; Pierce, Gregory; Feldman, David; Zanetti, Enrique; McNulty, Amy (2020-05)
      Outdoor watering of lawns accounts for about half of single-family residential potable water demand in the arid southwest United States. Consequently, many water utilities in the region offer customers cash rebates to ...