Search Results - subject:"Inverse Problem"

Using genetic algorithms and finite element methods to detect shaft crack for rotor-bearing system

He, Yongyong; Guo, Dan; Chu, Fulei - In: Mathematics and Computers in Simulation (MATCOM) 57 (2001) 1, pp. 95-108

inverse problem and not easy to tackle. In this paper, a genetic algorithms based method for shaft crack detection is proposed …

Persistent link: https://www.econbiz.de/10010749005

L'uso dell'ottimizzazione non lineare nella procedura di compressione di immagini con IFS

Torre, Davide La - Dipartimento di Economia, Management e Metodi … - 2001

distorted copies of subsets of itself. This has been the basis of the so called "inverse problem" for fractal image compression …

Persistent link: https://www.econbiz.de/10005007177

Statistical Inference in a Linear Model for Spatially Located Sensors and Random Input

Gnot, Stanisław; Rafajłowicz, Ewaryst; … - In: Annals of the Institute of Statistical Mathematics 53 (2001) 2, pp. 370-379

Persistent link: https://www.econbiz.de/10005616428

Numerical procedure for identification of water capacity of porous media

Fatullayev, Afet; Can, Emine - In: Mathematics and Computers in Simulation (MATCOM) 52 (2000) 2, pp. 113-120

An inverse problem is formulated to determine water capacity of porous media. Mathematical model of the problem …

Persistent link: https://www.econbiz.de/10010870479

Optimization approaches to frequency-domain inverse problems for Kerr-like and non-Kerr-like nonlinear media

Norgren, Martin - In: Mathematics and Computers in Simulation (MATCOM) 50 (1999) 5, pp. 553-575

Two different kinds of frequency-domain inverse problems for nonlinear media are considered. In the first problem, the linear permittivity and the nonlinear parameter for a stratified slab of a Kerr-like medium are reconstructed as functions of the position from reflection and transmission data...

Persistent link: https://www.econbiz.de/10010870089

Recovery of surface parameters from stepped-frequency radar returns

Cheney, Margaret; Isaacson, David; Lytle, Victoria I.; … - In: Mathematics and Computers in Simulation (MATCOM) 50 (1999) 5, pp. 527-539

This paper discusses a method for using the reflected signal from a stepped-frequency radar system to obtain the electrical permittivity and conductivity in a thin layer at the flat surface of a (possibly inhomogeneous) body. The method is based on a band-limited version of geometrical optics.

Persistent link: https://www.econbiz.de/10010749347

Layer-stripping and parameter reconstruction for a hyperbolic equation in a three-dimensional inhomogeneous half-space

Cao, Jiasu; He, Sailing; Weston, Vaughan H. - In: Mathematics and Computers in Simulation (MATCOM) 50 (1999) 5, pp. 511-525

A time domain wave-splitting approach to the inverse problem for a hyperbolic differential equation in an inhomogeneous …

Persistent link: https://www.econbiz.de/10010749473

Direct and inverse problems on nonlinear rods

Folkow, Peter D; Kreider, Kevin - In: Mathematics and Computers in Simulation (MATCOM) 50 (1999) 5, pp. 577-595

shooting method is introduced for the inverse problem. The feasibility of the inverse algorithm is presented in various …

Persistent link: https://www.econbiz.de/10010749487

Inverse problems involving the one-way wave equation: medium function reconstruction

Wall, David J.N.; Lundstedt, Jonas - In: Mathematics and Computers in Simulation (MATCOM) 50 (1999) 5, pp. 489-510

Inverse problems are considered for the linear one-way one-dimensional wave equation or transport equation. In particular the wave speed reconstruction problem for a medium is discussed. Inverse problems for non-stationary, but also non-dispersive, media are examined; this means problems for which...

Persistent link: https://www.econbiz.de/10010749705

A wave-splitting based optimization approach to multi-dimensional time-domain electromagnetic inverse problems

Gustafsson, Mats; He, Sailing - In: Mathematics and Computers in Simulation (MATCOM) 50 (1999) 5, pp. 541-551

An optimization approach to a multi-dimensional electromagnetic inverse problem in the time domain is considered. Wave …-splitting provides the best linear combination of the fields for use in this type of inverse problem. The permittivity, permeability and …

Persistent link: https://www.econbiz.de/10010749910