Browsing Computational and Applied Mathematics by Title
Now showing items 567586 of 779

PSplines Using Derivative Information
(200904)Time series associated with singlemolecule experiments and/or simulations contain a wealth of multiscale information about complex biochemical systems. However efficiently extracting and representing useful physical ... 
Parallel Chemical Flood Simulation: An Implementation of UTCHEM on Distributed Memory Processors
(199306)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. ... 
Parallel Continuous Optimization
(200001)Parallel continuous optimization methods are motivated here by applications in science and engineering. The key issues are addressed at different computational levels including local and global optimization as well as ... 
Parallel Domain Decomposition Method for Mixed Finite Elements for Elliptic Partial Differential Equations
(199011)In this paper we develop a parallel domain decomposition method for mixed finite element methods. This algorithm is based on a procedure first formulated by Glowinski and Wheeler for a two subdomain problem. This present ... 
Parallel Solution of LargeScale Free Surface Viscoelastic Flows Via Sparse Approximate Inverse Preconditioning
(200608)Though computational techniques for twodimensional viscoelastic free surface flows are well developed, threedimensional flows continue to present significant computational challenges. Fully coupled free surface flow ... 
Parallel Space Decomposition of the Mesh Adaptive Direct Search Algorithm
(200711)This paper describes a Parallel Space Decomposition (PSD) technique for the Mesh Adaptive Direct Search (MADS) algorithm. MADS extends Generalized Pattern Search for constrained nonsmooth optimization problems. The objective ... 
Parallelizing Sylvesterlike Operations on a Distributed Memory Computer
(199402)A SIMD scheme for parallelization of the 2D array operation M(x) = (D×A + B×I + V) x is developed for a distributed memory computer with 2D mesh processor network. This scheme is carefully designed in order to approach ... 
Parameter Estimation of Probabilistic Choice Models
(198409)Probabilistic choice models are used by economists, psychologists, and marketing scientists in the analysis of choice behavior involving discrete, or quantal choice alternatives. The most widelyused of these is the ... 
Passivity Preserving Model Reduction via Interpolation of Spectral Zeros
(200211)An algorithm is developed for passivity preserving model reduction of LTI systems. The derivation is justified analytically and implementation schemes are developed for both medium scale (dense) and large scale (sparse) ... 
Passivity Preserving Model Reduction via Interpolation of Spectral Zeros: Selection Criteria and Implementation
(200709)This thesis presents spectral zero selection criteria for a rigorous theory on passivity preserving model reduction via interpolation of spectral zeros. For linear time invariant systems in circuit simulation, passivity ... 
PathFollowing Methods for a Class of Constrained Minimization Problems in Function Space
(200407)Pathfollowing methods for primaldual active set strategies requiring a regularization parameter are introduced. Existence of a path and its differentiability properties are analyzed. Monotonicity and convexity of the ... 
Pattern Search Algorithms for Mixed Variable General Constrained Optimization Problems
(200208)A new class of algorithms for solving nonlinearly constrained mixed variable optimization problems is presented. The AudetDennis Generalized Pattern Search (GPS) algorithm for bound constrained mixed variable optimization ... 
Pattern Search Algorithms for Mixed Variable Programming
(199905)Many engineering optimization problems involve a special kind of discrete variable that can be represented by a number, but this representation has no significance. Such variables arise when a decision involves some situation ... 
Pattern Search in the Presence of Degeneracy
(200308)This paper deals with generalized pattern search (GPS) algorithms for linearly constrained optimization. At each iteration, the GPS algorithm generates a set of directions that conforms to the geometry of any nearby linear ... 
PDS: Direct Search Methods for Unconstrained Optimization on Either Sequential or Parallel Machines
(199203)PDS is a collection of Fortran subroutines for solving unconstrained nonlinear optimization problems using direct search methods. The software is written so that execution on sequential machines is straightforward while ... 
Pearson's Rule for Sample Medians
(198604)Pearson's rule (medianmode) = 2(meanmedian) has long been observed to be approximately true for slightly skewed densities. Under mild conditions, the rule is asymptotically true for densities of sample medians for ... 
PenaltyFree Discontinuous Galerkin Methods for Incompressible NavierStokes Equations
(201204)A firstorder discontinuous Galerkin method is proposed for solving the steadystate incompressible NavierStokes equations. The stability of this penaltyfree method is obtained by locally enriching the discrete space ... 
PFC: A Program to Convert Fortran to Parallel Form
(198203)The recent success of vector computers like the Cray1 and array processors such as those manufactured by Floating Point Systems has increased interest in making vector operations available to the Fortran programmer. The ...