Results 11 to 20 of about 320,148 (311)

Commutator method for averaging lemmas

open access: yesAnalysis & PDE, 2022
We introduce a commutator method with multipliers to prove averaging lemmas, the regularizing effect for the velocity average of solutions for kinetic equations. This method requires only elementary techniques in Fourier analysis and shows a new range of assumptions that are sufficient for the velocity average to be in $L^2([0,T],H^{1/2}_x).$ This ...
Jabin, Pierre-Emmanuel   +2 more
openaire   +3 more sources

The averaging of nonlocal Hamiltonian structures in Whitham's method

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We consider the m-phase Whitham's averaging method and propose the procedure of “averaging” nonlocal Hamiltonian structures. The procedure is based on the existence of a sufficient number of local-commuting integrals of the system and gives the Poisson ...
Andrei Ya. Maltsev
doaj   +2 more sources

A new method of frequency offset correction using coherent averaging

open access: yesJournal of Telecommunications and Information Technology, 2005
This paper describes a new method of frequency offset correction to improve clock stability in communication systems where the temporary drift or jitter of phase angle is not accepted.
Piotr Z. Gajewski   +2 more
doaj   +2 more sources

Investigation of high order stochastic differential equations using averaging method [PDF]

open access: yesVietnam Journal of Mechanics, 2007
The averaging method is a useful tool for investigating both deterministic and stochastic quasilinear system. In the stochastic problems, however, the method has often been developed only for mechanical systems subjected to white noise excitations.In the
Nguyen Dong Anh, Ngo Thi Hong Hue
doaj   +2 more sources

On the averaging of differential inclusions with maxima [PDF]

open access: yes, 2023
We apply the averaging method to ordinary differential inclusions with maxima perturbed by a small parameter and illustrate the method by some ...
Bar, Bachir, Bachir Bar
core   +1 more source

The averaged Lagrangian method

open access: yesJournal of Computational and Applied Mathematics, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Celledoni, Elena, Høiseth, Eirik Hoel
openaire   +2 more sources

Asymptotic Integration of a Certain Second-Order Linear Delay Differential Equation

open access: yesМоделирование и анализ информационных систем, 2016
We construct some asymptotic formulas for solutions of a certain linear second-order delay differential equation when the independent variable tends to infinity. Two features concerning the considered equation should be emphasized. First, the coefficient
P. N. Nesterov
doaj   +1 more source

Equivalence between volume averaging and moments matching techniques for mass transport models in porous media. [PDF]

open access: yes, 2010
This paper deals with local non-equilibrium models for mass transport in dual-phase and dual-region porous media. The first contribution of this study is to formally prove that the time-asymptotic moments matching method applied to two-equation models is
Davit, Yohan   +5 more
core   +1 more source

Parametric Resonance in a Time-Dependent Harmonic Oscillator

open access: yesМоделирование и анализ информационных систем, 2013
In this paper, we study the phenomenon of appearance of new resonances in a timedependent harmonic oscillator under an oscillatory decreasing force. The studied equation belongs to the class of adiabatic oscillators and arises in connection with the ...
P. N. Nesterov
doaj   +1 more source

On Whitham's averaging method

open access: yesFunctional Analysis and Its Applications, 1995
15 ...
Maltsev, A. Ya., Pavlov, M. V.
openaire   +2 more sources

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