Results 31 to 40 of about 5,360,556 (378)

The effect of near-zone preconditioning on electromagnetic integral equations of first and second kind [PDF]

open access: yesAdvances in Radio Science, 2013
The linear equation systems which arise from the discretization of surface integral equations are conveniently solved with iterative methods because of the possibility to employ fast integral methods like the Multilevel Fast Multipole Method.
O. Wiedenmann, T. F. Eibert
doaj   +1 more source

The Modified Integral Transform Method to Solve Heat Equation in a Cylindrical Coordinate [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2021
This paper investigated a modified integral transform method used to solve heat equation in cylindrical coordinate, this modification method has been obtained based on  integral transform (x-coordinate), we expand  integral transform (x ...
Ahmed Jalal, Ahmed Jassim
doaj   +1 more source

Numerical solution of the integral form of the resummed Balitsky-Kovchegov equation [PDF]

open access: yes, 2013
The Balitsky--Kovchegov (BK) evolution equation in its resummed integral form as obtained in JHEP 1202 (2012) 117 and arXiv:1206.1223 is considered. We solve it numerically and compare to the unresummed BK equation formulated as an integral equation and ...
Kutak, Krzysztof   +2 more
core   +2 more sources

A New Integral Transform for Solving Integral and Ordinary Differential Equations [PDF]

open access: yesMathematics and Computational Sciences
In this research paper, we introduce a new transform belonging to the class of Laplace transforms, called the Yasser-Jassim Transform (YJ Transform). We explore its properties and compare it to the classical Laplace transform.
Mohammed Yasser, Hassan Jassim
doaj   +1 more source

Chandrasekhar quadratic and cubic integral equations via Volterra-Stieltjes quadratic integral equation

open access: yesDemonstratio Mathematica, 2021
In this work, we study the existence of one and exactly one solution x∈C[0,1]x\in C\left[0,1], for a delay quadratic integral equation of Volterra-Stieltjes type.
El-Sayed Ahmed M. A., Omar Yasmin M. Y.
doaj   +1 more source

New integral equation approach to solution of diffusion equation

open access: yesComputer Assisted Methods in Engineering and Science, 2023
The paper concerns the theoretical derivation of a new formulation for solution of the initial-boundary value problems for the diffusion equation. The global and local integral equations are derived by using the fundamental solution for the Laplace ...
Vladimίr Sladek   +2 more
doaj  

Multimode network representation of two dimensional steps in rectangular waveguides [PDF]

open access: yes, 1994
In this paper a new Multimode Network representation for arbitrary rectangular waveguide junctions is presented. The energy coupling between the higher order modes excited in the junction is rigorously described via a multimode impedance matrix ...
Guglielmi, Marco   +1 more
core   +1 more source

On the Integral Equation Arising in the Biological Model After the Power-3 Closure

open access: yesСовременные информационные технологии и IT-образование, 2019
This article is devoted to the nonlinear integral equation arising in the biological model of Ulf Dieckmann and Richard Low. A brief review of the model of foreign authors Individual-based model is made, the meaning and necessity of introducing spatial ...
Serafim R. Gadzhiev, Alexey A. Nikitin
doaj   +1 more source

Legendre wavelets technique for special Initial-Value problem for the quarter plain of heat transfer [PDF]

open access: yesMathematics and Computational Sciences, 2020
In this paper we have solved the heat transfer equation by means of the Volterra integral equation and Legendre Wavelets. Since, due to numerical facts, solution of the related partial differential equation is difficult, thus we have applied integral ...
Bahman Babayar-Razlighi, Mehdi Solaimani
doaj   +1 more source

Shear viscosity in $\phi^4$ theory from an extended ladder resummation

open access: yes, 2000
We study shear viscosity in weakly coupled hot $\phi^4$ theory using the CTP formalism . We show that the viscosity can be obtained as the integral of a three-point function.
A. Hosoya   +29 more
core   +3 more sources

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