Перегляд за автором "Aryasova, O.V."

Результати 1-4 з 4

Characteristic time of thermal and diffusional relaxation

Aryasova, O.V.; Khazan, Ya.M. (Геофизический журнал, 2015)

It is shown that frequently used dimensional estimate of a layer thermal relaxation time, tr, as L²/k based on the layer thickness, L, and thermal diffusivity, к, strongly overestimates tr. The correct estimate tr=L²/π²k ...
One class of multidimensional stochastic differential equations having no property of weak uniqueness of a solution

Aryasova, O.V.; Portenko, M.I. (2005)

A class of stochastic differential equations in a multidimensional Euclidean space such that the property of a solution to be unique (in a weak sense) fails for it is considered. We present the correct formulation of the ...
One example of a random change of time that transforms a generalized diffusion process into an ordinary one

Aryasova, O.V.; Portenko, M.I. (2007)

We propose a random change of time for a class of generalized diffusion processes such that the corresponding stochastic differential equation (with generalized coefficients) is transformed into an ordinary one (its ...
A uniqueness theorem for the martingale problem describing a diffusion in media with membranes

Aryasova, O.V.; Portenko, M.I. (2008)

We formulate a martingale problem that describes a diffusion process in a multidimensional Euclidean space with a membrane located on a given mooth surface and having the properties of skewing and delaying. The theorem on ...

Результати 1-4 з 4

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