Now showing items 13-19 of 19

    • A New Compressive Video Sensing Framework for Mobile Broadcast 

      Li, Chengbo; Jiang, Hong; Wilford, Paul; Zhang, Yin; Scheutzow, Mike (2013-03)
      A new video coding method based on compressive sampling is proposed. In this method, a video is coded using compressive measurements on video cubes. Video reconstruction is performed by minimization of total variation ...
    • A Posteriori Error Estimation for DEIM Reduced Nonlinear Dynamical Systems 

      Wirtz, D.; Sorensen, D.C.; Haasdonk, B. (2014)
      In this work an efficient approach for a posteriori error estimation for POD-DEIM reduced nonlinear dynamical systems is introduced. The considered nonlinear systems may also include time- and parameter-affine linear terms ...
    • Ritz Value for Non-Hermitian Matrices 

      Carden, Russell L.; Embree, Mark (2012-12-12)
      Rayleigh–Ritz eigenvalue estimates for Hermitian matrices obey Cauchy interlacing, which has helpful implications for theory, applications, and algorithms. In contrast, few results about the Ritz values of non-Hermitian ...
    • Short-term Recurrence Krylov Subspace Methods for Nearly Hermitian Matrices 

      Embree, Mark; Sifuentes, Josef A.; Soodhalter, Kirk M.; Szyld, Daniel B.; Xue, Fei (2012-06-05)
      The progressive GMRES algorithm, introduced by Beckermann and Reichel in 2008, is a residual-minimizing short-recurrence Krylov subspace method for solving a linear system in which the coefficient matrix has a low-rank ...
    • Synthetic Aperture Radar Imaging and Motion Estimation via Robust Principal Component Analysis 

      Borcea, Liliana; Callaghan, Thomas; Papanicolaou, George (2012-08-22)
      We consider the problem of synthetic aperture radar (SAR) imaging and motion estimation of complex scenes. By complex we mean scenes with multiple targets, stationary and in motion. We use the usual setup with one moving ...
    • Time-Dependent Coupling of Navier-Stokes and Darcy Flows 

      Cesmelioglu, Aycil; Girault, Vivette; Riviere, Beatrice (2013-01-11)
      A weak solution of the coupling of time-dependent incompressible Navier–Stokes equations with Darcy equations is defined. The interface conditions include the Beavers–Joseph–Saffman condition. Existence and uniqueness ...
    • A Trust-Region Algorithm with Adaptive Stochastic Collocation for PDE Optimization under Uncertainty 

      Kouri, D.P.; Heinkenschloss, M.; Ridzal, D.; van Bloemen Waanders, B.G. (2013)
      The numerical solution of optimization problems governed by partial differential equations (PDEs) with random coefficients is computationally challenging because of the large number of deterministic PDE solves required at ...