Now showing items 31-40 of 265
On the Convergence of the Mizuno-Todd-Ye Algorithm to the Analytic Center of the Solution Set
In this work we demonstrate that the Mizuno-Todd-Ye predictor corrector primal-dual interior-point method for linear programming generates iteration sequences that converge to the analytic center of the solution set.
Parallel Chemical Flood Simulation: An Implementation of UTCHEM on Distributed Memory Processors
This work describes experiences porting the UTCHEM chemical flood simulator from a serial environment to the nodal environment of distributed memory massively parallel computers. Two conversion strategies have been explored. ...
An Adaptive Finite Difference Method for Traveltime and Amplitude
The eikonal equation with point source is difficult to solve with high order accuracy because of the singularity of the solution at the source. All the formally high order schemes turn out to be first order accurate without ...
Segmented Data Files: An I/O Standard
The Use of Optimization Techniques in the Solution of Partial Differential Equations
Optimal Control of systems governed by Partial Differential Equations is an applications-driven area of mathematics involving the formulation and solution of minimization problems. Given a physical phenomenon described by ...
The Plane-Wave Detection Problem
We study in some detail a simple nonlinear estimation problem, which shares several important features with some inverse problems in wave propagation. We consider the estimation of waveforms and incidence angles of transient ...
Concavity Cuts for Disjoint Bilinear Programming
We pursue the study of concavity cuts for the disjoint bilinear programming problem. This optimization problem has two equivalent symmetric linear maxmin reformulations, leading to two sets of concavity cuts. We first ...
Column-Secant Update Technique for Solving Systems of Nonlinear Equations
This paper presents a QR update implementation of the successive column correction (SCC) method and a column-secant modification of the SCC method, which is called the CSSCC method. The computational cost of the QR update ...