Now showing items 1765-1784 of 3583

    • Keystroke-Dynamics Authentication Against Synthetic Forgeries 

      Stefan, Deian; Yao, Danfeng (Daphne) (IEEE, 2010)
      We describe the use of keystroke-dynamics patterns for authentication and detecting infected hosts, and evaluate its robustness against forgery attacks. Specifically, we present a remote authentication framework called ...
    • Kinematic Analysis of a Partially Decoupled 3-DOF Parallel Wrist 

      Zhang, Fan; Zhu, Yunping; Furukawa, Tomonari; Song, Wanqing (Hindawi, 2015-11-23)
      A unique spherical parallel wrist with three partially decoupled rotational degrees of freedom (DOFs) is introduced in this paper. The mechanism has the significant advantages of few singularities and simple partially ...
    • A Kinetic Formulation Of 3-Dimensional Quantum Mechanical Harmonic-Oscillator Under A Random Perturbation 

      Besieris, Ioannis M.; Stasiak, W. B.; Tappert, F. D. (AIP Publishing, 1978-02-01)
      The behavior of a three_dimensional, nonrelativistic, quantum mechanical harmonic oscillator is investigated under the influence of three distinct types of randomly fluctuating potential fields. Specifically, kinetic (or ...
    • Kinetics and thermodynamics of the ferroelectric transitions in PbMg1/3Nb2/3O3 and PbMg1/3Nb2/3O3-12% PbTiO3 crystals 

      Colla, Eugene V.; Jurik, Nathan; Liu, Yehan; Delgado, Miguel; Weissman, Michael B.; Viehland, Dwight D.; Ye, Zuo-Guang (American Institute of Physics, 2013-05-14)
      The two-step freezing and melting of the field-induced ferroelectric order in PbMg1/3Nb2/3O3 (PMN) and (PbMg1/3Nb2/3O3)(0.88)(PbTiO3)(0.12) (PMN-PT) is investigated. In PMN-PT, direct microscopic images show that both steps ...
    • The kinetics of analyte capture on nanoscale sensors 

      Solomon, J. E.; Paul, Mark R. (CELL PRESS, 2006-03-01)
      This article presents a number of kinetic analyses related to binding processes relevant to capture of target analyte species in nanoscale cantilever-type devices designed to detect small concentrations of biomolecules. ...
    • KKT conditions satisfied using adaptive neighboring in hybrid cellular automata for topology optimization 

      Penninger, Charles L.; Tovar, Andres; Watson, Layne T.; Renaud, John E. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2009), TR-09-18
      The hybrid cellular automaton (HCA) method is a biologically inspired algorithm capable of topology synthesis that was developed to simulate the behavior of the bone functional adaptation process. In this algorithm, the ...
    • Knowledge Representation Issues in Default Reasoning 

      Nutter, J. Terry (Department of Computer Science, Virginia Polytechnic Institute & State University, 1989), TR-89-21
      Most existing approaches to reasoning in uncertainty and with incomplete information appeal to formal theories, with relatively little attention to the phenomena they are intended to capture. This has had two major ...
    • Knowledge Reuse Through Categorical Breakdown Analysis: A Method for Collaborative Systems Evaluation 

      Humphries, Will; McCrickard, D. Scott; Neale, Dennis (Department of Computer Science, Virginia Polytechnic Institute & State University, 2008-05-01), TR-08-09
      Designing Computer-Supported Cooperative Work (CSCW) systems that support the widely varying needs of targeted users is difficult. There is no silver bullet technology that enables users to effectively collaborate with one ...
    • A Knowledge-Based System for Composite Document Analysis and Retrieval: Design Issues in the CODER Project 

      Fox, Edward A.; France, Robert K. (Department of Computer Science, Virginia Polytechnic Institute & State University, 1986-03-01), TR-86-06
      The CODER (COmposite Document Expert/Extended/Effective Retrieval) Project aims at applying a variety of methods developed in the realm of artificial intelligence to improve the performance of information retrieval systems. ...
    • Knowledge-fused differential dependency network models for detecting significant rewiring in biological networks 

      Tian, Ye; Zhang, Bai; Hoffman, Eric P; Clarke, Robert; Zhang, Zhen; Shih, Ie-Ming; Xuan, Jianhua; Herrington, David M; Wang, Yue (2014-07-24)
      Modeling biological networks serves as both a major goal and an effective tool of systems biology in studying mechanisms that orchestrate the activities of gene products in cells. Biological networks are context-specific ...
    • Knowledge-guided gene ranking by coordinative component analysis 

      Wang, Chen; Xuan, Jianhua; Li, Huai; Wang, Yue; Zhan, Ming; Hoffman, Eric P; Clarke, Robert (2010-03-30)
      Background In cancer, gene networks and pathways often exhibit dynamic behavior, particularly during the process of carcinogenesis. Thus, it is important to prioritize those genes that are strongly associated with the ...
    • Knowledge-guided multi-scale independent component analysis for biomarker identification 

      Chen, Li; Xuan, Jianhua; Wang, Chen; Shih, Ie-Ming; Wang, Yue; Zhang, Zhen; Hoffman, Eric; Clarke, Robert (2008-10-06)
      Background Many statistical methods have been proposed to identify disease biomarkers from gene expression profiles. However, from gene expression profile data alone, statistical methods often fail to identify biologically ...
    • Label-free analysis of physiological hyaluronan size distribution with a solid-state nanopore sensor 

      Rivas, Felipe; Zahid, Osama K.; Reesink, Heidi L.; Peal, Bridgette T.; Nixon, Alan J.; DeAngelis, Paul L.; Skardal, Aleksander; Rahbar, Elaheh; Hall, Adam R. (Springer Nature, 2018-03-12)
      Hyaluronan (or hyaluronic acid, HA) is a ubiquitous molecule that plays critical roles in numerous physiological functions in vivo, including tissue hydration, inflammation, and joint lubrication. Both the abundance and ...
    • Label-free DNA sequence detection using oligonucleotide functionalized optical fiber 

      Wang, X. W.; Cooper, K. L.; Wang, Anbo; Xu, J. C.; Wang, Z. A.; Zhang, Y.; Tu, Z. J. (AIP Publishing, 2006-10-01)
      The authors present a label-free method for direct detection of deoxyribonucleic acid (DNA) sequences. The capture DNA is immobilized onto the surface of a silica optical fiber tip by means of the layer-by-layer electrostatic ...
    • Laboratory Tests for Hot-Mix Asphalt Characterization in Virginia 

      Flintsch, Gerardo W.; Imad L. Al-Qadi; Loulizi, Amara; Mokarem, David W. (Virginia Center for Transportation Innovation and Research, 2005-06-01)
      This project reviewed existing laboratory methods for accurately describing the constitutive behavior of the mixes used in the Commonwealth of Virginia. Indirect tensile (IDT) strength, resilient modulus, static creep in ...
    • Lagrangian coherent structures are associated with fluctuations in airborne microbial populations 

      Tallapragada, Phanindra; Ross, Shane D.; Schmale, David G. III (American Institute of Physics, 2011-09-01)
      Many microorganisms are advected in the lower atmosphere from one habitat to another with scales of motion being hundreds to thousands of kilometers. The concentration of these microbes in the lower atmosphere at a single ...
    • Lancet Dynamics in Greater Horseshoe Bats, Rhinolophus ferrumequinum 

      He, Weikai; Pedersen, Scott C.; Gupta, Anupam K.; Simmons, James A.; Mueller, Rolf (PLOS, 2015-04-08)
      Echolocating greater horseshoe bats (Rhinolophus ferrumequinum) emit their biosonar pulses nasally, through nostrils surrounded by fleshy appendages (‘noseleaves’) that diffract the outgoing ultrasonic waves. Movements of ...
    • The Land Development Design Initiative (LDDI) 2011 Annual Report 

      Unknown author (Virginia Tech. Land Development Design Initiative, 2011)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report commemorates the group’s ...
    • The Land Development Design Initiative (LDDI) 2012 Annual Report 

      Unknown author (Virginia Tech. Land Development Design Initiative, 2012)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...
    • The Land Development Design Initiative (LDDI) 2013 Annual Report 

      Unknown author (Virginia Tech, 2013)
      The Land Development Design Initiative (LDDI) is a collaborative effort of the Via Department of Civil & Environmental Engineering at Virginia Tech with industry practitioners. This annual report details LDDI's activities ...