Now showing items 31-40 of 225
Recycling BICG with an application to model reduction
(Siam Publications, 2012)
Science and engineering problems frequently require solving a sequence of dual linear systems. Besides having to store only a few Lanczos vectors, using the biconjugate gradient method (BiCG) to solve dual linear systems ...
Optimal Control of Drug Therapy in a Hepatitis B Model
Combination antiviral drug therapy improves the survival rates of patients chronically infected with hepatitis B virus by controlling viral replication and enhancing immune responses. Some of these drugs have side effects ...
A note on best approximation and invertibility of operators on uniformly convex Banach spaces
(Hindawi Publishing Corp, 1991-01-01)
It is shown that if X is a uniformly convex Banach space and S a bounded linear operator onX for which ?I-S?=1, then S is invertible if and only if ?I-12S? <1. From this it follows thatif S is invertible on X then either ...
A state space error estimate for pod-deim nonlinear model reduction
(Siam Publications, 2012)
This paper derives state space error bounds for the solutions of reduced systems constructed using proper orthogonal decomposition (POD) together with the discrete empirical interpolation method (DEIM) recently developed ...
Cohomology of Finite Groups
(University of Essen, 1992)
This is a short lecture course on the cohomology of finite groups. Topics include Künneth formula, cup products and cohomology ring, differential graded algebras, Evens norm map and the Steenrod operations.
Field-induced motion of ferrofluid droplets through immiscible viscous media
(Cambridge University Press, 2008-09)
The motion of a hydrophobic ferrofluid droplet placed in a viscous medium and driven by an externally applied magnetic field is investigated numerically in an axisymmetric geometry. Initially, the drop is spherical and ...
Pulse propagation in a randomly perturbed ocean: Single pulse statistics
(Acoustical Society of America, 1980-10)
A statistical theory of broadband single pulse propagation in a random ocean is presented. The mutual coherence function of the received signal is derived using an analysis based upon coupled mode theory. As propagation ...
On the eigenfunctions for Hookean and FENE dumbbell models
(AIP Publishing, 2013-09)
We study the linear eigenvalue problem for the distribution function associated with Hookean and FENE dumbbell models. For Hookean dumbbells, the eigenfunctions can be expressed by generalized Laguerre polynomials. The ...
A general convergence analysis of some Newton-type methods for nonlinear inverse problems
(Siam Publications, 2011)
We consider the methods x(n+1)(delta) - x(n)(delta) - g(alpha n) (F'(x(n)(delta))* F'(x(n)(delta)))F'(x(n)(delta))*(F(x(n)(delta)) - y(delta)) for solving nonlinear ill-posed inverse problems F(x) = y using the only available ...
effect of upstream boundary conditions on stability of fiber spinning in the highly elastic limit
(AIP Publishing, 2002-07)
We consider fiber spinning for the upper-convected Maxwell fluid in the limit of a high Deborah number. We compare several choices of boundary conditions that may be imposed. In addition to the takeup speed and the upstream ...