Results 11 to 20 of about 320,148 (311)
Commutator method for averaging lemmas
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
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The averaging of nonlocal Hamiltonian structures in Whitham's method
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
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A new method of frequency offset correction using coherent averaging
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
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Investigation of high order stochastic differential equations using averaging method [PDF]
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
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On the averaging of differential inclusions with maxima [PDF]
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
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The averaged Lagrangian method
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Celledoni, Elena, Høiseth, Eirik Hoel
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Asymptotic Integration of a Certain Second-Order Linear Delay Differential Equation
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
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Equivalence between volume averaging and moments matching techniques for mass transport models in porous media. [PDF]
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
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Parametric Resonance in a Time-Dependent Harmonic Oscillator
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
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Maltsev, A. Ya., Pavlov, M. V.
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