Sparsity Constraint in Electrical Impedance Tomography: Complete Electrode Model March 30, 2012 12:00 p.m. Matthias Gehre Abstract We investigate the potential of sparsity constraints in the electrical impedance tomography (EIT) inverse problem of inferring the distributed conductivity based on boundary potential measurements. We consider the complete electrode model, which is more sophisticated than the Neumann-to-Dirichlet […]
Optimal Design, Resonance and Bandgap Formation in Goupillaud-type Elastic Media April 24, 2012 11:30 a.m. Dr. George Gazonas ABSTRACT This talk will present the derivation of exact analytical optimal design solutions that minimize the amplitude of transient stress waves in Goupillaud-type layered elastic media [1]. The method of characteristics is used to derive a system […]
Implicit-explicit Runge-Kutta Methods with Stabilized Finite Elements for Advection-diffusion Equations February 21,2012 3:30 p.m. Alexandre Ern Abstract We analyze a two-stage implicit-explicit Runge–Kutta scheme for time discretization of advection–diffusion equations. Space discretization uses continuous, piecewise affine finite elements with interelement gradient jump penalty; discontinuous Galerkin methods can be considered as well. The advective and stabilization […]
Joint Asymptotics and Inferences for Partly Linear Models April 4, 2012 3:30 p.m. Guang Cheng Abstract Partly linear models provide a useful class of tools for modeling complex data by naturally incorporating a combination of linear and nonlinear effects within one framework. This talk will focus on the joint asymptotics and inferences for both Euclidean […]
Adaptive Graph Regularized Nonnegative Matrix Factorization Via Feature Selection November 28, 2012 9:30 a.m. Dr. Jingyan Wang Abstract Nonnegative Matrix Factorization (NMF), a popular compact data representation method, fails to discover the intrinsic geometrical structure of the data space. Graph regularized NMF (GrNMF) is proposed to avoid this limitation by regularizing NMF with a nearest […]