Now showing items 3696-3715 of 3756

    • What is a Successful Digital Library? 

      Shen, Rao; Vemuri, Naga Srinivas; Fan, Weiguo; Fox, Edward A. (2006-09-18)
      We synthesize diverse research in the area of digital library (DL) quality models, information systems (IS) success and adoption models, and information-seeking behavior models, to present a more integrated view of the ...
    • What to know before forecasting the flu 

      Chakraborty, Prithwish; Lewis, Bryan; Eubank, Stephen; Brownstein, John S.; Marathe, Madhav; Ramakrishnan, Naren (PLOS, 2018-10-12)
      Accurate and timely influenza (flu) forecasting has gained significant traction in recent times. If done well, such forecasting can aid in deploying effective public health measures. Unlike other statistical or machine ...
    • When Bioelectrochemical Systems Meet Forward Osmosis: Accomplishing Wastewater Treatment and Reuse through Synergy 

      Lu, Yaobin; Qin, Mohan; Yuan, Heyang; Abu-Reesh, Ibrahim M.; He, Zhen (MDPI, 2014-12-23)
      Bioelectrochemical systems (BES) and forward osmosis (FO) are two emerging technologies with great potential for energy-efficient water/wastewater treatment. BES takes advantage of microbial interaction with a solid electron ...
    • When Stopping Rules Don't Stop 

      France, Robert K. (1995)
      Performing ranked retrieval on large document collections can be slow. The method of stopping rules has been proposed to make it more efficient. Stopping rules, which terminate search when the highest ranked documents have ...
    • Whiggism in Computer Science: Views of the Field 

      Lee, John A. N. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1992), TR-92-17
      The teaching of any science is not complete without the inclusion of those elements that constitute the foundations of the field. While the history of computing is an element of those fundamentals in computer science, ...
    • Whirling of a base-excited cantilever beam 

      Hyer, Michael W. (Acoustical Society of America, 1979-04-01)
      The paper describes the response of a thin elastic cantilever beam excited by a known harmonic displacement at its base. The principal moments of the beam cross-sectional area are equal and the base excitation is in one ...
    • Who Reuses What? C++ Libraries and Programmer's Traits 

      Lattanzi, Mark; Henry, Sallie M. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1994-05-01), TR-94-18
      Software Reuse is one key to increasing productivity within the software development process. By reusing existing software, time and effort are saved in the coding, testing, and maintenance phases of a software product. ...
    • Whole Brain Radiation-Induced Impairments in Learning and Memory Are Time-Sensitive and Reversible by Systemic Hypoxia 

      Warrington, Junie P.; Csiszar, Anna; Mitschelen, Matthew; Lee, Yong Woo; Sonntag, William E. (PLOS, 2012-01-18)
      Whole brain radiation therapy (WBRT) is commonly used for treatment of primary and metastatic brain tumors; however, cognitive impairment occurs in 40–50% of brain tumor survivors. The etiology of the cognitive impairment ...
    • Whole Exome Sequencing to Identify Genetic Variants Associated with Raised Atherosclerotic Lesions in Young Persons 

      Hixson, James E.; Jun, Goo; Shimmin, Lawrence C.; Wang, Yizhi; Yu, Guoqiang; Mao, Chunhong; Warren, Andrew S.; Howard, Timothy D.; Vander Heide, Richard S.; Van Eyk, Jennifer; Wang, Yue; Herrington, David M. (Springer Nature, 2017-06-22)
      We investigated the influence of genetic variants on atherosclerosis using whole exome sequencing in cases and controls from the autopsy study "Pathobiological Determinants of Atherosclerosis in Youth (PDAY)". We identified ...
    • Whole genome sequence analysis reveals the broad distribution of the RtxA type 1 secretion system and four novel putative type 1 secretion systems throughout the Legionella genus 

      Brown, Connor L.; Garner, Emily; Jospin, Guillaume; Coil, David A.; Schwake, David O.; Eisen, Jonathan A.; Mukhopadhyay, Biswarup; Pruden, Amy (PLoS, 2020-01-01)
      Type 1 secretion systems (T1SSs) are broadly distributed among bacteria and translocate effectors with diverse function across the bacterial cell membrane. Legionella pneumophila, the species most commonly associated with ...
    • Whole-Ecosystem Experiments Reveal Varying Responses of Phytoplankton Functional Groups to Epilimnetic Mixing in a Eutrophic Reservoir 

      Lofton, Mary E.; McClure, Ryan P.; Chen, Shengyang; Little, John C.; Carey, Cayelan C. (MDPI, 2019-01-29)
      Water column mixing can influence community composition of pelagic phytoplankton in lakes and reservoirs. Previous studies suggest that low mixing favors cyanobacteria, while increased mixing favors green algae and diatoms. ...
    • Why Don’t More Farmers Go Organic? Using A Stakeholder-Informed Exploratory Agent-Based Model to Represent the Dynamics of Farming Practices in the Philippines 

      Olabisi, Laura Schmitt; Wang, Ryan Qi; Ligmann-Zielinska, Arika (MDPI, 2015-10-22)
      In spite of a growing interest in organic agriculture; there has been relatively little research on why farmers might choose to adopt organic methods, particularly in the developing world. To address this shortcoming, we ...
    • Why double-stranded RNA resists condensation 

      Tolokh, Igor S.; Pabit, Suzette A.; Katz, Andrea M.; Chen, Yujie; Drozdetski, Aleksander; Baker, Nathan; Pollack, Lois; Onufriev, Alexey V. (2014-09-15)
      The addition of small amounts of multivalent cations to solutions containing double-stranded DNA leads to inter-DNA attraction and eventual condensation. Surprisingly, the condensation is suppressed in double-stranded RNA, ...
    • Why Students Use Social Networking Sites After Crisis Situations 

      Sheetz, Steven D.; Fox, Edward A.; Fitzgerald, Andrew; Palmer, Sean; Shoemaker, Donald J.; Kavanaugh, Andrea L. (2011)
      Communities respond to tragedy by making virtuous use of social networking sites for a variety of purposes. We asked students to describe why they used a social networking site after the tragic shootings at Virginia Tech, ...
    • Why Students Use Social Networking Sites After Crisis Situations 

      Sheetz, Steven D.; Fox, Edward A.; Fitzgerald, Andrew; Palmer, Sean; Shoemaker, Donald J.; Kavanaugh, Andrea L. (2011)
      Communities respond to tragedy by making virtuous use of social networking sites for a variety of purposes. We asked students to describe why they used a social networking site after the tragic shootings at Virginia Tech, ...
    • Wide scanning spherical antenna 

      Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; Shen, Bing W.; Stutzman, Warren L. (United States Patent and Trademark Office, 1995-10-17)
      A novel method for calculating the surface shapes for subreflectors in a suboptic assembly of a tri-reflector spherical antenna system is introduced, modeled from a generalization of Galindo-Israel's method of solving ...
    • Wind Induced Vibration Control and Energy Harvesting of Electromagnetic Resonant Shunt Tuned Mass-Damper-Inerter for Building Structures 

      Luo, Yifan; Sun, Hongxin; Wang, Xiuyong; Zuo, Lei; Chen, Ning (Hindawi, 2017-07-13)
      This paper proposes a novel inerter-based dynamic vibration absorber, namely, electromagnetic resonant shunt tuned mass-damper-inerter (ERS-TMDI). To obtain the performances of the ERS-TMDI, the combined ERS-TMDI and a ...
    • Wind Profiling in the Lower Atmosphere from Wind-Induced Perturbations to Multirotor UAS 

      González-Rocha, Javier; De Wekker, Stephan F. J.; Ross, Shane D.; Woolsey, Craig A. (MDPI, 2020-02-29)
      We present a model-based approach to estimate the vertical profile of horizontal wind velocity components using motion perturbations of a multirotor unmanned aircraft system (UAS) in both hovering and steady ascending ...
    • Wind-driven spume droplet production and the transport of Pseudomonas syringae from aquatic environments 

      Pietsch, Renee B.; Grothe, Hinrich; Hanlon, Regina; Powers, Craig W.; Jung, Sunghwan; Ross, Shane D.; Schmale, David G. III (PeerJ, 2018-09-26)
      Natural aquatic environments such as oceans, lakes, and rivers are home to a tremendous diversity of microorganisms. Some may cross the air-water interface within droplets and become airborne, with the potential to impact ...
    • Winds and tides in the mid-latitude Southern Hemisphere upper mesosphere recorded with the Falkland Islands SuperDARN radar 

      Hibbins, R. E.; Freeman, M. P.; Milan, S. E.; Ruohoniemi, J. Michael (Copernicus Publications, 2011)
      Meteor wind data from the first year of operation of the Falkland Islands SuperDARN radar (52 degrees S, 59 degrees W) are used to characterize the atmospheric tides and background winds in the upper mesosphere above the ...