Now showing items 396-415 of 1051

  • An Identification Scheme for the Determination of Systemic Arterial Load Parameters 

    Ling, R.Y.S.; Clark, Jr., J.W.; Srinivasan, R.; Cole, J.S.; Pruett, R.C. (1975-04-20)
    An identification scheme is developed for the determination of several parameters of a modified "Windkessel" model of the systemic arterial system for an individual patient undergoing cardiac catheterization. The scheme ...
  • Image Compression using an Efficient Edge Cartoon + Texture Model 

    Wakin, Michael; Romberg, Justin; Choi, Hyeokho; Baraniuk, Richard G. (2002-04-01)
    Wavelet-based image coders optimally represent smooth regions and isolated point singularities. However, wavelet coders are less adept at representing perceptually important edge singularities, and coding performance ...
  • Image Compression using Multiscale Geometric Edge Models 

    Wakin, Michael (2002-05-20)
    Edges are of particular interest for image compression, as they communicate important information, contribute large amounts of high-frequency energy, and can generally be described with few parameters. Many of today's most ...
  • Image Data Compression 

    Wei, Dong (1995-05-01)
    Wavelet-based multi-resolution representation has become a cutting-edge technology in the area of image data compression. Though the discrete wavelet transform is closely related to the perfect-reconstruction octave-band ...
  • Image enhancement by nonlinear wavelet processing 

    Odegard, Jan E. (1994-10-20)
    In this paper we describe how the theory of wavelet thresholding introduced by Donoho and Johnstone can successfully be applied to two distinct problems in image processing where traditional linear filtering techniques are ...
  • Image Restoration Using the EM Algorithm and Wavelet-Based Complexity Regularization 

    Figueiredo, Mario; Nowak, Robert David (2002-05-20)
    This paper introduces an <i>expectation-maximization</i> (EM) algorithm for image restoration (deconvolution) based on a penalized likelihood formulated in the wavelet domain. Regularization is achieved by promoting a ...
  • Image Super-Resolution for Improved Automatic Target Recognition 

    Wagner, Raymond; Waagen, Donald; Cassabaum, Mary (2004-04-01)
    Infrared imagers used to acquire data for automatic target recognition are inherently limited by the physical properties of their components. Fortunately, image super-resolution techniques can be applied to overcome the ...
  • Imagine: Media Processing with Streams 

    Khailany, Brucek; Dally, William J.; Kapasi, Ujval J.; Mattson, Peter; Namkoong, Jinyung; Owens, John D.; Towles, Brian; Chang, Andrew; Rixner, Scott (2001-03-20)
    The Power-efficient Imagine stream processor achieves performance densities comparable to those of special-purpose embedded processors. Executing programs mapped to streams and kernels, a single Imagine processor is expected ...
  • Imaging molecular adsorption and desorption dynamics on graphene using terahertz emission spectroscopy 

    Sano, Y.; Kawayama, I.; Tabata, M.; Salek, K.A.; Murakami, H.; Wang, M.; Vajtai, R.; Ajayan, P.M.; Kono, J.; Tonouchi, M. (2014-08-13)
    Being an atomically thin material, graphene is known to be extremely susceptible to its environment, including defects and phonons in the substrate on which it is placed as well as gas molecules that surround it. Thus, any ...
  • Imaging with Terahertz Pulses 

    Dorney, Timothy D.; Johnson, Jon L.; Mittleman, Daniel M.; Baraniuk, Richard G. (2000-07-01)
    Recently, a real-time imaging system based on terahertz (THz) time-domain spectroscopy has been developed. This technique offers a range of unique imaging modalities due to the broad bandwidth, sub-picosecond duration, and ...
  • Imaging with THz Pulses 

    Dorney, Timothy D.; Johnson, Jon L.; Mittleman, Daniel M.; Baraniuk, Richard G. (2000-09-01)
    A real-time imaging system based on terahertz (THz) time-domain spectroscopy has been demonstrated. This technique offers a range of unique imaging modalities due to the broad bandwidth, sub-picosecond duration, and ...
  • The Impact of Exploiting Instruction-Level Parallelism on Shared-Memory Multiprocessors 

    Pai, Vijay S.; Ranganathan, Parthasarathy; Abdel-Shafi, Hazim; Adve, Sarita V. (1999-02-20)
    Current microprocessors incorporate techniques to aggressively exploit instruction-level parallelism (ILP). This paper evaluates the impact of such processors on the performance of shared-memory multiprocessors, both without ...
  • Impact of growth temperature on InAs/GaInSb strained layer superlattices for very long wavelength infrared detection 

    Haugan, H.J.; Brown, G.J.; Elhamri, S.; Mitchel, W.C.; Mahalingam, K.; Kim, M.; Noe, G.T.; Ogden, N.E.; Kono, J. (2012-10-23)
    We explore the optimum growth space for a 47.0A ° InAs/21.5A ° Ga0.75In0.25Sb superlattices (SLs) designed for the maximum Auger suppression for a very long wavelength infrared gap. Our growth process produces a consistent ...
  • Impact of growth temperature on InAs/GaInSb strained layer superlattices for very long wavelength infrared detection 

    Haugan, H. J.; Brown, G. J.; Elhamri, S.; Mitchel, W. C.; Mahalingam, K.; Kim, M.; Noe, G. T.; Ogden, N. E.; Kono, J. (2012-10-23)
    We explore the optimum growth space for a 47.0A ° InAs/21.5A ° Ga0.75In0.25Sb superlattices (SLs) designed for the maximum Auger suppression for a very long wavelength infrared gap. Our growth process produces a consistent ...
  • The Impact of Instruction-Level Parallelism on Multiprocessor Performance and Simulation Methodology 

    Pai, Vijay S. (1997-04-20)
    Current microprocessors exploit high levels of instruction-level parallelism (ILP). This theis presents the first detailed analysis of the impact of such processors on shared-memory multiprocessors. We find that ILP ...
  • The Impact of Instruction-Level Parallelism on Multiprocessor Performance and Simulation Methodology 

    Pai, Vijay S.; Ranganathan, Parthasarathy; Adve, Sarita V. (1997-02-20)
    None
  • Impact of Multiple Access on Uplink scheduling 

    Rajan, Dinesh; Sabharwal, Ashutosh; Aazhang, Behnaam (2001-09-20)
    In this paper, we consider uplink scheduling for bursty traffic. We characterize the achievable rate region for Gaussian multiple access in terms of minimum required powers, with a constraint on average transmission delay ...
  • Implementation and Complexity Analysis of List Sphere Detector for MIMO-OFDM systems 

    Myllylä, Markus; Juntti, Markku; Cavallaro, Joseph R. (2008-10-01)
    A list sphere detector (LSD) is an enhancement of a sphere detector (SD) that can be used to approximate the soft output maximum a posteriori probability (MAP) detector used in the detection of the multiple-input ...
  • Implementation aspects of list sphere decoder algorithms for MIMO-OFDM systems 

    Myllylä, Markus; Cavallaro, Joseph R.; Juntti, Markku (2010-10-01)
    A list sphere decoder (LSD) can be used to approximate the optimal maximum a posteriori (MAP) detector for the detection of multiple-input multiple-output (MIMO) signals. In this paper, we consider two LSD algorithms with ...
  • Implementation Issues of Multiuser Detection in CDMA Communication Systems 

    Xu, Gang (1999-05-20)
    Multistage detectors have been accepted in designs for next generation CDMA base stations because they are less complex than some other multiuser detectors. In this thesis, we propose a differencing method to further ...