Now showing items 884-903 of 1762

  • A Massively Parallel Implementation of QC-LDPC Decoder on GPU 

    Wang, Guohui; Wu, Michael; Sun, Yang; Cavallaro, Joseph R. (2011-06-01)
    The graphics processor unit (GPU) is able to provide a low-cost and flexible software-based multi-core architecture for high performance computing. However, it is still very challenging to efficiently map the real-world ...
  • Material parameter estimation and imaging with terahertz time-domain spectroscopy 

    Dorney, Timothy Dominic (2002)
    Terahertz time-domain spectroscopy (THz-TDS) offers a range of unique imaging modalities due to the broad bandwidth, sub-picosecond duration, and phase-sensitive detection of the THz pulses. Previous research in the THz ...
  • A Mathematical Model of the Vagally Driven SA Nodal Pacemaker 

    Greco, E.C.; Clark, Jr., J.W. (1975-01-20)
    A model is developed for the vagal control of SA nodal activity in the heart and consists essentially of a modified bonhoeffer-Van der Pol (BVP) model of the "free-running" SA node and a lumped model of the neural terminations ...
  • MATHEMATICAL MODELLING OF PULMONARY AIRWAY DYNAMICS 

    GOLDEN, JAMES FREDERICK (1972)
  • Matrilysin/matrix metalloproteinase-7(MMP7) cleavage of perlecan/HSPG2 creates a molecular switch to alter prostate cancer cell behavior 

    Grindel, B.J.; Martinez, J.R.; Pennington, C.L.; Muldoon, M.; Stave, J.; Chung, L.W.; Farach-Carson, M.C. (2014)
    Perlecan/HSPG2, a large heparan sulfate (HS) proteoglycan, normally is expressed in the basement membrane (BM) underlying epithelial and endothelial cells. During prostate cancer (PCa) cell invasion, a variety of proteolytic ...
  • Matrix Based Computation of Floating-Point Roundoff Noise 

    Van Veen, Barry D.; Baraniuk, Richard G. (1989-12-01)
    A matrix based procedure is presented for computing the output roundoff noise power for filters implemented with floating-point arithmetic. The filter's computational structure is represented in terms of a product of ...
  • Maximum Likelihood Multipath Channel Parameter Estimation in CDMA Systems 

    Sengupta, Chaitali; Hottinen, Ari; Cavallaro, Joseph R.; Aazhang, Behnaam (1998-03-01)
    The problem addressed in this paper is the estimation of the channel parameters in a Code Division Multiple Access(CDMA) communication system, in the presence of multipath effects. Maximum likelihood estimation of these ...
  • Maximum Likelihood Multipath Channel Parameter Estimation in CDMA Systems Using Antenna Arrays 

    Sengupta, Chaitali; Cavallaro, Joseph R.; Aazhang, Behnaam (1998-09-20)
    The problem addressed in this paper is the estimation of the chan-nel parameters in a Code Division Multiple Access (CDMA) communication system, in the presence of multipath effects and multiple sensors at the base station ...
  • Maximum Weight Basis Decoding of Convolutional Codes 

    Das, Suman; Erkip, Elza; Cavallaro, Joseph R.; Aazhang, Behnaam (2002-11-01)
    In this paper we describe a new suboptimal decoding technique for linear codes based on the calculation of maximum weight basis of the code. The idea is based on estimating the maximum number locations in a codeword which ...
  • Maximum Weight Basis Decoding of Convolutional Codes 

    Das, Suman; Erkip, Elza; Cavallaro, Joseph R.; Aazhang, Behnaam (2000-06-20)
    The effectiveness of the convolutional code increases with the constraint length of the code. Unfortunately the decoding complexity of Viterbi algorithm grows exponentially with the constraint length. In this paper we ...
  • A Maxwell’s fish eye lens for the terahertz region 

    Liu, Jingbo; Mendis, Rajind; Mittleman, Daniel M. (2013-07-15)
    We implement a two-dimensional Maxwell’s fish eye lens using a waveguide-based artificial dielectric. The Maxwell’s fish eye lens consists of two metallic cylindrical plates sandwiching a free-space region, with the inner ...
  • Measurement Driven Deployment of a Two-Tier Urban Mesh Access Network 

    Camp, Joseph; Robinson, Joshua; Steger, Christopher; Knightly, Edward (2006-06-01)
    Multihop wireless mesh networks can provide Internet access over a wide area with minimal infrastructure expenditure. In this work, we present a measurement driven deployment strategy and a data-driven model to study the ...
  • Measurement driven deployment of a two-tier urban mesh access network 

    Camp, Joseph D. (2006)
    Multihop wireless mesh networks can provide Internet access over a wide area with minimal infrastructure expenditure. In this work, we investigate key issues involved in deploying such networks including individual link ...
  • Measurement of Filling-Factor-Dependent Magnetophonon Resonances in Graphene Using Raman Spectroscopy 

    Kim, Y.; Poumirol, J. M.; Lombardo, A.; Kalugin, N. G.; Georgiou, T.; Kim, Y. J.; Novoselov, K. S.; Ferrari, A. C.; Kono, J.; Kashuba, O.; Fal’ko, V. I.; Smirnov, D. (2013-05-29)
    We perform polarization-resolved Raman spectroscopy on graphene in magnetic fields up to 45 T. This reveals a filling-factor-dependent, multicomponent anticrossing structure of the Raman G peak, resulting from magnetophonon ...
  • Measurement of mechanical tractions exerted by cells within three-dimensional matrices 

    Legant, Wesley R.; Miller, Jordan S.; Blakely, Brandon L.; Cohen, Daniel M.; Genin, Guy M.; Chen, Christopher S. (2010)
    Quantitative measurements of cell-generated forces have heretofore required that cells be cultured on two-dimensional substrates. We describe a technique to quantitatively measure three-dimensional traction forces exerted ...
  • Measurement-based admission control in integrated-services networks 

    Qiu, Jingyu (1998)
    To satisfy the quality of service requirements of real-time multimedia applications, networks must employ resource reservation and admission control. In this paper, we describe a new Measurement-Based Admission Control ...
  • Measurements vs. Bits: Compressed Sensing meets Information Theory 

    Sarvotham, Shriram; Baron, Dror; Baraniuk, Richard G. (2006-09-01)
    Compressed sensing is a new framework for acquiring sparse signals based on the revelation that a small number of linear projections (measurements) of the signal contain enough information for its reconstruction. The ...
  • Measuring Time-Frequency Information and Complexity using the Renyi Entropies 

    Baraniuk, Richard G.; Flandrin, Patrick; Michel, Olivier (1995-09-01)
    In search of a nonparametric indicator of deterministic signal complexity, we link the Renyi entropies to time-frequency representations. The resulting measures show promise in several situations where concepts like the ...
  • Measuring Time-Frequency Information Content using the Renyi Entropies 

    Baraniuk, Richard G.; Flandrin, Patrick; Janssen, A. J. E. M.; Michel, Olivier (2001-05-01)
    The generalized entropies of Renyi inspire new measures for estimating signal information and complexity in the time-frequency plane. When applied to a time-frequency representation (TFR) from Cohen's class or the affine ...
  • Mechanical Activation of a Multimeric Adhesive Protein Through Domain Conformational Change 

    Wijeratne, Sithara S.; Botello, Eric; Yeh, Hui-Chun; Zhou, Zhou; Bergeron, Angela L.; Frey, Eric W.; Patel, Jay M.; Nolasco, Leticia; Turner, Nancy A.; Moake, Joel L.; Dong, Jing-fei; Kiang, Ching-Hwa (2013)
    The mechanical force-induced activation of the adhesive protein von Willebrand factor (VWF), which experiences high hydrodynamic forces, is essential in initiating platelet adhesion. The importance of the mechanical ...