نتایج جستجو برای: fourier series laplace transform

تعداد نتایج: 486285  

2012
A. S. Gudadhe P. R. Deshmukh

Linear canonical transform is an integral transform with four parameters and has been proved to be powerful tool for optics, radar system analysis, filter design etc. Fractional Fourier transform and Fresnel transform can be seen as a special case of linear canonical transform with real parameters. Further generalization of linear canonical transform with complex parameters is also developed an...

2007
Claude Sabbah C. SABBAH

— We show that the Fourier-Laplace transform of a regular holonomic module over the Weyl algebra of one variable, which generically underlies a variation of polarized Hodge structure, underlies itself an integrable variation of polarized twistor structure. Résumé (Transformation de Fourier-Laplace d’une variation de structure de Hodge complexe polarisée) Nous montrons que le transformé de Fouri...

2009
Claude Sabbah

We give an explicit formula (i.e., a formal stationary phase formula) for the local Fourier-Laplace transform of a formal germ of meromorphic connection of one complex variable with a possibly irregular singularity. Résumé (Une formule de la phase stationnaire explicite pour le transformé de Fourier-Laplace local) On donne une formule explicite (c’est-à-dire une formule de la phase stationnaire...

2015
A. Y. Afram S. E. Khader

In this work, we apply the fractional order thermoelasticity diffusion theory to a problem for a halfspace. The surface is taken to be traction free and subjected to a time dependent thermal shock. The chemical potential is assumed to be a known function of time on the bounding plane. Laplace and exponential Fourier transform techniques are used to obtain the solution by a direct approach. The ...

Journal: :INFORMS Journal on Computing 1996
Joseph Abate Gagan L. Choudhury Ward Whitt

The Laguerre method for numerically inverting Laplace transforms is an old established method based on the 1935 Tricomi-Widder theorem, which shows (under suitable regularity conditions) that the desired function can be represented as a weighted sum of Laguerre functions, where the weights are coefficients of a generating function constructed from the Laplace transform using a bilinear transfor...

2011
Y. Z. Povstenko

Nonaxisymmetric solutions to time-fractional diffusion-wave equation with a source term in cylindrical coordinates are obtained for an infinite medium. The solutions are found using the Laplace transform with respect to time t, the Hankel transform with respect to the radial coordinate r, the finite Fourier transform with respect to the angular coordinate φ, and the exponential Fourier transfor...

In this paper, we apply the Laplace decomposition method to obtain a series solutions of the Burgers-Huxley and Burgers-Fisher equations. The technique is based on the application of Laplace transform to nonlinear partial differential equations. The method does not need linearization, weak nonlinearity assumptions or perturbation theory and the nonlinear terms can be easily handled by using the...

Journal: :Entropy 2016
Yun Zhao Fengqun Zhao

Abstract: This article focuses on obtaining analytical solutions for d-dimensional, parabolic Volterra integro-differential equations with different types of frictional memory kernel. Based on Laplace transform and Fourier transform theories, the properties of the Fox-H function and convolution theorem, analytical solutions for the equations in the infinite domain are derived under three fricti...

Journal: :journal of heat and mass transfer research 0
mohammad sadegh motaghedi barforoush semnan university syfolah saedodin faculty of mechanical engineering, semnan university, iran

small scale thermal devices, such as micro heater, have led researchers to consider more accurate models of heat in thermal systems. moreover, biological applications of heat transfer such as simulation of temperature field in laser surgery is another pathway which urges us to re-examine thermal systems with modern ones. non-fourier heat transfer overcomes some shortcomings of fourier heat tran...

Journal: :journal of solid mechanics 0
r kumar department of mathematics, kurukshetra university , kurukshetra, haryana, india n sharma department of mathematics, mm university, mullana, ambala, haryana, india p lata department of basic and applied sciences, punjabi university, patiala, punjab, india

the present paper is concerned with  the investigation of disturbances in a homogeneous  transversely isotropic thermoelastic rotating  medium with two temperatures, in the presence of the combined effects of   hall currents and magnetic field due to thermomechanical sources. the formulation is applied to the thermoelasticity theories developed by green-naghdi theories of type-ii and type-iii. ...

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