Now showing items 11-20 of 722
Construction of C 2 Pythagorean-hodograph interpolating splines by the homotopy method
(Baltzer Science Publishers, Baarn/Kluwer Academic Publishers; J.C. Baltzer AG, Science Publishers ; Springer Science+Business Media, 1996-12)
The complex representation of polynomial Pythagorean-hodograph (PH) curves allows the problem of constructing a C 2 PH quintic “spline” that interpolates a given sequence of points p 0 , p 1 ,..., p N and end-derivatives ...
Resonances, radiation damping and instabilitym in Hamiltonian nonlinear wave equations
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1999-03)
We consider a class of nonlinear Klein-Gordon equations which are Hamiltonian and are perturbations of linear dispersive equations. The unperturbed dynamical system has a bound state, a spatially localized and time periodic ...
Ionization and Scattering for Short-Lived Potentials
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-06)
We consider perturbations of a model quantum system consisting of a single bound state and continuum radiation modes. In many problems involving the interaction of matter and radiation, one is interested in the effect of ...
An Adaptively Refined Cartesian Mesh Solver for the Euler Equations
(Elsevier, 1993-01)
A method for adaptive refinement of a Cartesian mesh for the solution of the steady Euler equations is presented. The algorithm creates an initial uniform mesh and cuts the body out of that mesh. The mesh is then refined ...
A Spectral Element Basin Model for the Shallow Water Equations
(Elsevier, 1993-11)
A spectral element model is built for the shallow water equations in complex geometry. It is proved to be an efficient computational model in solving oceanic problems. In particular, the equatorial Rossby modon's reflection ...
An integral method for mixing, chemical reactions, and extinction in unsteady strained diffusion layers
(Elsevier, 1991-02)
An integral method is presented for determining the evolution of molecular mixing, finite rate chemical reactions, and local extinction in diffusion layers under the effect of an unsteady strain rate. The partial differential ...
Existence of infinitely-many smooth, static, global solutions of the Einstein/Yang-Mills equations
(Springer-Verlag, 1993-01)
We prove the existence of infinitely-many globally defined singularity-free solutions, to the EYM equations with SU (2) gauge group. The solutions are indexed by a coupling constant, have distinct winding numbers, and their ...
Modal interactions in the non-linear response of elastic cables under parametric/external excitation
(Elsevier, 1992-03)
A theoretical model is derived which describes the non-linear response of a suspended elastic cable to small tangential oscillations of one support. The support oscillations, in general, result in parametric excitation of ...
Density estimation with Haar series
(Elsevier, 1990-02)
Rate of convergence for density estimators based on Haar series are derived under very mild condition: the unknown density has to be of bounded variation. These estimators are histograms on dyadic intervals.