Now showing items 1252-1271 of 1507

  • A simple proof of the restricted isometry property for random matrices 

    Baraniuk, Richard G.; Davenport, Mark A.; DeVore, Ronald A.; Wakin, Michael B. (2007-01-18)
    We give a simple technique for verifying the Restricted Isometry Property (as introduced by Candès and Tao) for random matrices that underlies Compressed Sensing. Our approach has two main ingredients: (i) concentration ...
  • A Simple Scheme for Adapting Time-Frequency Representations 

    Jones, Douglas L.; Baraniuk, Richard G. (1994-12-01)
    Signal-dependent time-frequency representations, by adapting their functional form to fit the signal being analyzed, offer many performance advantages over conventional representations. In this paper, we propose a simple, ...
  • A Simple Scheme for Adapting Time-Frequency Representations 

    Jones, Douglas L.; Baraniuk, Richard G. (1992-10-01)
    Current signal-dependent time-frequency representations are block-oriented methods suited only for short-duration signals. The authors propose a simple, computationally efficient technique for creating adaptive time-frequency ...
  • A Simple Statistical Analysis of Wavelet-based Multifractal Spectrum Estimation 

    Goncalves, Paulo; Riedi, Rudolf H.; Baraniuk, Richard G. (1998-11-01)
    The multifractal spectrum characterizes the scaling and singularity structures of signals and proves useful in numerous applications, from network traffic analysis to turbulence. Of great concern is the estimation of the ...
  • Simplified Wavelet-Domain Hidden Markov Models using Contexts 

    Crouse, Matthew; Baraniuk, Richard G. (1998-05-01)
    Wavelet-domain hidden Markov models (HMMs) are a potent new tool for modeling the statistical properties of wavelet transforms. In addition to characterizing the statistics of individual wavelet coefficients, HMMs capture ...
  • Simulation of Non-Gaussian Long-Range-Dependent Traffic using Wavelets 

    Ribeiro, Vinay Joseph; Riedi, Rudolf H.; Crouse, Matthew; Baraniuk, Richard G. (1999-05-01)
    In this paper, we develop a simple and powerful multiscale model for the synthesis of non-Gaussian, long-range dependent (LRD) network traffic. Although wavelets effectively decorrelate LRD data, wavelet-based models have ...
  • Simulation of shared memory parallel systems 

    Mukherjee, Rajat (1990)
    This thesis describes a method to simulate parallel programs written for shared memory multiprocessors. We have extended execution-driven simulation to facilitate the simulation of shared memory. We have developed a shared ...
  • Simulation of Systolic Arrays on the Connection Machine 

    Hemkumar, Nariankadu D.; Cavallaro, Joseph R. (1993-09)
    The use of a programming model which extends naturally from the underlying hardware, greatly eases the design and implementation of simulators, especially for those systems that resemble the hardware in the paradigm of ...
  • Simulation of Systolic Arrays On The Connection Machine 

    Hemkumar, Nariankadu D.; Cavallaro, Joseph R. (1993-09-20)
    The use of a programming model which extends naturally from the underlying hardware, greatly eases the design and implementation of simulators, especially for those systems that resemble the hardware in the paradigm of ...
  • Simulation-driven design of high-performance programmable network interface cards 

    Willmann, Paul (2004)
    As network link speeds race to 10 Gigabit/sec and beyond, Internet servers will rely on programmable network interface cards (NICs) to relieve the ever increasing frame processing burdens. To meet that need, this work ...
  • Simultaneous Speckle Reduction and Data Compression using Best Wavelet Packet Bases with Applications to SAR based ATD/R 

    Wei, Dong; Guo, Haitao; Odegard, Jan E.; Lang, Markus; Burrus, C. Sidney (1995-04-20)
    We propose a novel method for simultaneous speckle reduction and data compression based on shrinking, quantizing and coding the wavelet packet coefficients of the logarithmically transformed image. A fast algorithm is used ...
  • Single-Particle Absorption Spectroscopy by Photothermal Contrast 

    Yorulmaz, Mustafa; Nizzero, Sara; Hoggard, Anneli; Wang, Lin-Yung; Cai, Yiyu; Su, Man-Nung; Chang, Wei-Shun; Link, Stephan (2015)
    Removing effects of sample heterogeneity through single-molecule and single-particle techniques has advanced many fields. While background free luminescence and scattering spectroscopy is widely used, recording the absorption ...
  • Single-Particle Spectroscopy Reveals Heterogeneity in Electrochemical Tuning of the Localized Surface Plasmon 

    Byers, Chad P.; Hoener, Benjamin S.; Chang, Wei-Shun; Yorulmaz, Mustafa; Link, Stephan; Landes, Christy F. (2014)
    A hyperspectral imaging method was developed that allowed the identification of heterogeneous plasmon response from 50 nm diameter gold colloidal particles on a conducting substrate in a transparent three-electrode ...
  • Single-pixel imaging via compressive sampling 

    Duarte, Marco F.; Davenport, Mark A.; Takhar, Dharmpal; Laska, Jason N.; Sun, Ting; Kelly, Kevin F.; Baraniuk, Richard G. (2008-03-01)
  • Slender PUF Protocol: A lightweight, robust, and secure authentication by substring matching 

    Majzoobi, Mehrdad; Rostami, Masoud; Koushanfar, Farinaz; Wallach, Dan S.; Devadas, Srinivas (2012)
    We introduce Slender PUF protocol, an efficient and secure method to authenticate the responses generated from a Strong Physical Unclonable Function (PUF). The new method is lightweight, and suitable for energy constrained ...
  • Small-Time Scaling Behavior of Internet Backbone Traffic 

    Ribeiro, Vinay Joseph; Zhang, Zhi-Li; Moon, Sue; Diot, Christophe (2005-06-01)
    We perform an extensive wavelet analysis of Internet backbone traffic signals to observe and understand the causes of small-time (sub-seconds) scaling phenomena present in them. We observe that for a majority of the traffic ...
  • Small-time scaling behaviors of Internet backbone traffic: An empirical study 

    Zhang, Zhi-Li; Ribeiro, Vinay Joseph; Moon, Sue; Diot, Christophe (2003-04-20)
    We study the small-time (sub-seconds) scaling behaviors of Internet backbone traffic, based on traces collected from OC3/12/48 links in a tier-1 ISP. We observe that for a majority of these traces, the (second-order) scaling ...
  • The smashed filter for compressive classification and target recognition 

    Davenport, Mark A.; Duarte, Marco F.; Wakin, Michael B.; Laska, Jason N.; Takhar, Dharmpal; Kelly, Kevin F.; Baraniuk, Richard G. (2007-01-01)
    The theory of compressive sensing (CS) enables the reconstruction of a sparse or compressible image or signal from a small set of linear, non-adaptive (even random) projections. However, in many applications, including ...
  • Smooth biorthogonal wavelets for applications in image compression 

    Odegard, Jan E.; Burrus, C. Sidney (1996-09-20)
    In this paper we introduce a new family of smooth, symmetric biorthogonal wavelet basis. The new wavelets are a generalization of the Cohen, Daubechies and Feauveau (CDF) biorthogonal wavelet systems. Smoothness is controlled ...
  • Smoothing vs. buffering for end-to-end QoS: Fundamental issues and comparison 

    Wu, Tao (2000)
    Smoothing traffic flows at the network edge to reduce their burstiness has been shown to have significant benefits for video-on-demand systems and deterministic services. In this thesis, we investigate the relative abilities ...