Results 1 to 10 of about 445,081 (268)

Approximate Representation of One Mixed Problem Solution Pertaining to Heat Conduction Theory Using Special Functions

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2009
Using a special psi-function the paper presents an exact and approximate (with an error evaluation) solutions of the mixed problem pertaining to one-dimensional heat conduction equation. An advantage of the obtained approximate formula is its comparative
P. G. Lasy, I. N. Meleshko
doaj   +1 more source

On approximate solution of non-elliptic singular integral equation systems in Lebesgue spaces [PDF]

open access: yesComputer Science Journal of Moldova, 2000
We investigate in this paper problems of theoretical foundation of collocations and mechanical quadratures methods for approximate solution of singular integral equation systems in the case, when their symbols have on the integration contour a finite set
T. Cibotaru
doaj  

Effect of Correlated Non-Gaussian Quadratures on the Performance of Binary Modulations

open access: yesJournal of Electrical and Computer Engineering, 2011
The received signal in many wireless communication systems comprises of the sum of waves with random amplitudes and random phases. In general, the composite signal consists of correlated nonidentical Gaussian quadrature components due to the central ...
Valentine A. Aalo, George P. Efthymoglou
doaj   +1 more source

Iterative methods of Ambartsumian equations’ solutions. Part 2

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022
Background. Ambartsumian equation and its generalizations are one of the main integral equations of astrophysics, which have found wide application in many areas of physics and technology.
I.V. Boykov, A.A. Pivkina
doaj   +1 more source

Contact problem of torsion of a multilayer base with elastic connections between layers

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
Torsion of a multilayer base with elastic connections between layers by cylindrical punch with a flat sole was considered. The Hankel integral transform of the first order and the method of the compliance functions were used.
Nina N Antonenko, Igor G Velichko
doaj   +1 more source

AN APPROXIMATE METHODS FOR SOLVING POLYSINGULAR INTEGRAL EQUATIONS IN DEGENERATE CASES

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. This work is devoted to the study of sets of functions in which the condition of unique solvability of degenerate polysingular integral equations is satisfied, and to the construction of approximate methods for solving polysingular integral
I. V. Boykov   +2 more
doaj   +1 more source

Critical Poles and Third-Order Nonlinear Differential Equations

open access: yesMathematics
The paper deals with the results of a study of a third-order nonlinear differential equation with moving singular points and critical poles. So far, this type of equation cannot be solved in quadratures.
Victor Orlov
doaj   +1 more source

Symmetries, Reductions and Exact Solutions of Nonstationary Monge–Ampère Type Equations

open access: yesMathematics
A family of strongly nonlinear nonstationary equations of mathematical physics with three independent variables is investigated, which contain an arbitrary degree of the first derivative with respect to time and a quadratic combination of second ...
Alexander V. Aksenov, Andrei D. Polyanin
doaj   +1 more source

Nacisk Stempla na Niejednorodna Półpłaszczyznę Sprężystą

open access: yesEngineering Transactions, 1967
An effective solution is obtained for the contact problem of a symmetric body of any form in contact without friction with a nonhomogeneous elastic semi-infinite panel (Fig, 1).
B. Stachowicz, G. Szefer
doaj  

Regularized counterdiabatic driving for the quantum Rabi model

open access: yesPhysical Review Research
Counterdiabatic (CD) driving provides a powerful route to fast and robust state preparation by suppressing diabatic excitations during finite-time evolution.
Julián Ferreiro-Vélez   +3 more
doaj   +1 more source

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