Results 91 to 100 of about 2,220 (230)

Conditional Symmetries and Riemann Invariants for Hyperbolic Systems of PDEs

, 2007
This paper contains an analysis of rank-k solutions in terms of Riemann invariants, obtained from interrelations between two concepts, that of the symmetry reduction method and of the generalized method of characteristics for first order quasilinear ...
Huard, Benoit, Grundland, A. Michel
core   +1 more source

The PDEs of biorthogonal polynomials arising in the two-matrix model

, 2006
The two-matrix model can be solved by introducing biorthogonal polynomials. In the case the potentials in the measure are polynomials, finite sequences of biorthogonal polynomials (called windows) satisfy polynomial ODEs as well as deformation equations (
Eynard, B., Bertola, M.
core   +1 more source

Subpixel Registration Directly from the Phase Difference

EURASIP Journal on Advances in Signal Processing, 2006
This paper proposes a new approach to subpixel registration, under local/global shifts or rotation, using the phase-difference matrix. We establish the exact relationship between the continuous and the discrete phase difference of two shifted images and
Balci Murat, Foroosh Hassan
doaj   +1 more source

Least-squares differential quadrature time integration scheme in the dual reciprocity boundary element method solution of diffusive-convective problems

, 2007
Least-squares differential quadrature method (DQM) is used for solving the ordinary differential equations in time, obtained from the application of dual reciprocity boundary element method (DRBEM) for the spatial partial derivatives in diffusive ...
Bozkaya, Canan
core   +1 more source

Linear one-sided approximation algorithms for the solution of overdetermined systems of linear inequalities

, 1984
Two new algorithms for solving the overdetermined system of linear inequalities Ca > 0 are presented. The first algorithm calculates the one-sided Chebyshev solution from below, of the overdetermined system of linear equations Ca = f, where f is a ...
Abdelmalek, Nabih N.
core   +1 more source

AJUSTAMENTO PARAMÉTRICO POR MÍNIMOS QUADRADOS COM ANÁLISE NA ESTABILIDADE DA SOLUÇÃO

, 1997
O presente trabalho tem por objetivo mostrar os problemas de estabilidade que podem surgir na solução do problema de mínimos quadrados.
Garnés, Silvio Jacks dos Anjos, de Sampaio, Raimundo José Borges, Dalmolin, Quintino   +2 more
core   +1 more source

An implementation of the QR factorization for solving overdetermined systems of linear equations

, 1980
Different procedures for solving an overdetermined system of linear equations are revisited and new technical details in its computer implementations are described.
Escudero, L. F.
core   +2 more sources

Weakly perturbed linear boundary-value problem for system of fractional differential equations with Caputo derivative

Results in Applied Mathematics
We consider a perturbed linear boundary-value problem for a system of fractional differential equations with Caputo derivative. The boundary-value problem is specified by a linear vector functional, the number of components of which does not coincide ...
Oleksandr Boichuk, Viktor Feruk
doaj   +1 more source

A steepest ascent method for the Chebyshev problem

, 1969
In this paper we present an efficient ascent method for calculating the minimax solution of an overdetermined system of linear equations A x = b Ax = b .
Marcel Meicler
core   +1 more source

Online Monitoring of Flexural Damage Index of a Cable-Stayed Bridge

Shock and Vibration, 2019
This work introduces a recent application of the online nondestructive damage assessment system into a cable-stayed bridge. A set of ambient modal parameters are automatically extracted every 20 minutes using real-time signal data collected from a total ...
Byeong Hwa Kim
doaj   +1 more source