Now showing items 331-350 of 2237

    • Composition and Sources of Particulate Matter Measured near Houston, TX: Anthropogenic-Biogenic Interactions 

      Bean, Jeffrey K.; Faxon, Cameron B.; Leong, Yu Jun; Wallace, Henry William; Cevik, Basak Karakurt; Ortiz, Stephanie; Canagaratna, Manjula R.; Usenko, Sascha; Sheesley, Rebecca J.; Griffin, Robert J.; Ruiz, Lea Hildebrandt (2016)
      Particulate matter was measured in Conroe, Texas (~60 km north of downtown Houston, Texas) during the September 2013 DISCOVER-AQ campaign to determine the sources of particulate matter in the region. The measurement site ...
    • Compound Poisson Cascades 

      Chainais , Pierre; Riedi, Rudolf H.; Abry, Patrice (2002-05-01)
      Multiplicative processes and multifractals proved useful in various applications ranging from hydrodynamic turbulence to computer network traffic, to name but two. Placing multifractal analysis in the more general framework ...
    • A Comprehensive Probabilistic Framework to Learn Air Data from Surface Pressure Measurements 

      Srivastava, Ankur; Meade, Andrew J. (2015)
      Use of probabilistic techniques has been demonstrated to learn air data parameters from surface pressure measurements. Integration of numerical models with wind tunnel data and sequential experiment design of wind tunnel ...
    • Compressed Sensing for Imaging Applications 

      Takhar, Dharmpal (2008)
      Compressed sensing is a new sampling theory which allows reconstructing signals using sub-Nyquist measurements. This can significantly reduce the computation re­quired for both image and video whether during acquisition ...
    • Compressing Piecewise Smooth Multidimensional Functions Using Surflets: Rate-Distortion Analysis 

      Chandrasekaran, Venkat; Wakin, Michael; Baron, Dror; Baraniuk, Richard G. (2004-03-01)
      Discontinuities in data often represent the key information of interest. Efficient representations for such discontinuities are important for many signal processing applications, including compression, but standard Fourier ...
    • Compression Color Space Estimation of JPEG Images using Lattice Basis Reduction 

      Neelamani, Ramesh; Baraniuk, Richard G.; de Queiroz, Ricardo (2001-10-01)
      Given a color image that was previously JPEG-compressed in some hidden color space, we aim to estimate this unknown compression color space from the image. This knowledge is potentially useful for color image enhancement ...
    • Compression of Higher Dimensional Functions Containing Smooth Discontinuities 

      Chandrasekaran, Venkat; Wakin, Michael; Baron, Dror; Baraniuk, Richard G. (2004-03-01)
      Discontinuities in data often represent the key information of interest. Efficient representations for such discontinuities are important for many signal processing applications, including compression, but standard Fourier ...
    • Compressive sensing for signal ensembles 

      Duarte, Marco F. (2010)
      Compressive sensing (CS) is a new approach to simultaneous sensing and compression that enables a potentially large reduction in the sampling and computation costs for acquisition of signals having a sparse or compressible ...
    • Compressive Sensing in Positron Emission Tomography (PET) Imaging 

      Valiollahzadeh, Majid (2015-04-16)
      Positron emission tomography (PET) is a nuclear medicine functional imaging modality, applicable to several clinical problems, but especially in detecting the metabolic activity (as in cancer). PET scanners use multiple ...
    • Computation of a Unimodular Matrix 

      Kontos, Athanassios; de Figueiredo, Rui J.P. (1979-12-01)
      An algorithm for computing a unimodular matrix U(λ) satisfying the equation [A(λ) B(λ)] U(λ) = [1 0] is presented where A(λ) and B(λ) are relatively left prime polynomial matrices. ...
    • Computational approaches to species phylogeny inference and gene tree reconciliation 

      Nakhleh, Luay (2013)
      An intricate relationship exists between gene trees and species phylogenies, due to evolutionary processes that act on the genes within and across the branches of the species phylogeny. From an analytical perspective, gene ...
    • Computational modeling of the arterial wall based on layer-specific histological data 

      Jin, Tao; Stanciulescu, Ilinca (2016)
      Arterial walls typically have a heterogeneous structure with three different layers (intima, media, and adventitia). Each layer can be modeled as a fiber-reinforced material with two families of relatively stiff collagenous ...
    • Computationally Efficient Estimators for the Bayes Risk 

      Wilcox, Lynn D.; de Figueiredo, Rui J.P. (1978-05-20)
      A computationally efficient estimator for the Bayes risk is one which achieves a desired accuracy with a minimum of computation. In many problems, for example speech recognition, point evaluations of the class conditional ...
    • Computationally Efficient Iterative Multiuser Detection and Decoding 

      Das, Suman; Erkip, Elza; Aazhang, Behnaam (1998-11-20)
      We describe an iterative detection and decoding scheme for the uplink in a convolutionally coded direct sequence code division multiple access (DS-CDMA) system. We consider maximum-a-posteriori (MAP) decoding and reduce ...
    • Computationally Efficient Multiuser Detectors 

      Das, Suman; Cavallaro, Joseph R.; Aazhang, Behnaam (1997-09-20)
      CDMA is becoming an increasingly popular multiplexing scheme in wireless communications and this has necessitated the development of efficient detection techniques. The exponential complexity of the optimal detector on ...
    • Computer Controlled Intracavity Frequency Doubling of a CW Dye Ring Laser 

      Marshall, Charles M.; Pollock, Clifford R.; Stickel, Robert E.; Tittel, Frank K. (1979-10-20)
      The development of a computer controlled tunable ultraviolet spectrometer utilizing intracavity second harmonic generation in a single frequency CW dye ring laser is reported. With 5 W of argon ion laser pump power at 514.5 ...
    • Concentration of Binary FM Spectra 

      Papantoni-Kazakos, P.; Kazakos, D. (1974-11-20)
      The spectrum of a digital FM signal can be considered as an indicator of the resistance of the signal to distortions caused by band-limitation. The study in this paper is oriented toward the design of a signaling pulses ...
    • Conditional and Relative Multifractal Spectra 

      Riedi, Rudolf H.; Scheuring, Istvan (1997-03-01)
      In the study of the involved geometry of singular distributions the use of fractal and multifractal analysis has shown results of outstanding significance. So far, the investigation has focused on structures produced by ...