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Transient heat diffusion problems with variable thermal properties solved by generalized integral transform technique
(2014-01-01)
In this work, studies of two-dimensional transient heat diffusion problems in domains of rectangular and elliptical geometries, submitted to boundary conditions of first kind, were carried out. For the problem formulation, ...
Joint transform correlator optical encryption system: Extensions of the recorded encrypted signal and its inverse Fourier transform
(Elsevier Science, 2015-05)
In this work we study the joint transform correlator setup, finding two analytical expressions for the extensions of the joint power spectrum and its inverse Fourier transform. We found that an optimum efficiency is reached, ...
An inverse method to estimate the moving heat source in machining process
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
The present work propounds an inverse method to estimate the heat sources in the transient two-dimensional heat conduction problem in a rectangular domain with convective bounders. The non homogeneous partial differential ...
The Semigroup and the Inverse of the Laplacian on the Heisenberg Group
(Universidad de La Frontera. Departamento de Matemática y EstadísticaUniversidade Federal de Pernambuco. Departamento de Matemática, 2010)
The inversion, formulae for some bessel and hypergeometric transforms
(Universidad Nacuional de Colombia; Sociedad Colombiana de matemáticas, 1976)
By an appeal to the Laplace transform and their inverses we have obtained five inversión formulae for some Bessel function transforms. The inversion formula for hyperqeometric transforms have been given whose kernel are ...
Application of block matrix theory to obtain the inverse transform of the vector-valued DFT
(Hikari Ltd., 2015)
We study the vector-valued discrete Fourier transform (vector-valued DFT) and its inverse transform, the vector-valued DFT inversion, through its block matrix representation. These transforms are defined for N- periodic ...
On the iterative inversion of generalized attenuated Radon transforms
(Walter De Gruyter GmbhBerlinAlemanha, 2013)
Inverse analysis with integral transformed temperature fields: Identification of thermophysical properties in heterogeneous media
(ElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos Fluidos, 2019)
Back-projection inversion of a conical Radon transform
(Taylor & Francis Ltd, 2016-02)
In an effort to deal with many ionizing radiation imaging mechanisms involving the Compton effect, we study a Radon transform on circular cone surfaces having a fixed axis direction, which is called here conical Radon ...