Results 31 to 40 of about 1,989,896 (322)

Sufficient stochastic maximum principle for the optimal control of semi-Markov modulated jump-diffusion with application to Financial optimization [PDF]

open access: yes, 2014
The finite state semi-Markov process is a generalization over the Markov chain in which the sojourn time distribution is any general distribution. In this article we provide a sufficient stochastic maximum principle for the optimal control of a semi ...
Deshpande, Amogh
core   +2 more sources

A Novel Exploration of Diffusion Process Based on Multi-Type Galton–Watson Forests

open access: yesMathematics
Diffusion is a commonly used technique for spreading information from point to point on a graph. The rationale behind diffusion is not clear. The multi-type Galton–Watson forest is a random model of population growth without space or any other resource ...
Yanjiao Zhu   +4 more
doaj   +1 more source

Fast Diffusion Mechanism of Silicon Tri-interstitial Defects [PDF]

open access: yes, 2005
We reveal the microscopic self-diffusion process of compact tri-interstitials in silicon using a combination of molecular dynamics and nudged elastic band methods.
Barr, Stephen A.   +5 more
core   +3 more sources

Convergence of stochastic process with Markov switching [PDF]

open access: yesМатематичні Студії, 2012
It has been established sufficient conditions for the convergence of a multi-dimensional stochastic process in the case of dependence of the regression function on the environment, which is described by Markov switchings.
O. I. Kiykovska, Ya. M. Chabanyuk
doaj  

Affinity Learning Via Self-Supervised Diffusion for Spectral Clustering

open access: yesIEEE Access, 2021
Spectral clustering makes use of the spectrum of an input affinity matrix to segment data into disjoint clusters. The performance of spectral clustering depends heavily on the quality of the affinity matrix.
Jianfeng Ye   +4 more
doaj   +1 more source

STAND: A Spatio-Temporal Algorithm for Network Diffusion Simulation

open access: yes, 2020
Information, ideas, and diseases, or more generally, contagions, spread over space and time through individual transmissions via social networks, as well as through external sources.
Dang Lanxue   +3 more
core   +1 more source

A Generalized Diffusion Equation: Solutions and Anomalous Diffusion

open access: yesFluids, 2023
We investigate the solutions of a generalized diffusion-like equation by considering a spatial and time fractional derivative and the presence of non-local terms, which can be related to reaction or adsorption–desorption processes.
Ervin K. Lenzi   +4 more
doaj   +1 more source

Superfast front propagation in reactive systems with anomalous diffusion

open access: yes, 2002
We study a reaction diffusion system where we consider a non-gaussian process instead of a standard diffusion. If the process increments follow a probability distribution with tails approaching to zero faster than a power law, the usual qualitative ...
A Vulpiani   +14 more
core   +1 more source

Research of the impact of the methods of extragent preparation on physical and chemical properties of exhausted beat slices

open access: yesНовые технологии, 2019
From the point of view of ensuring the stability of the mode of its conduct, the process of diffusion desugarization of beet slices, is largely determined by physical and chemical properties of beet slices, which are usually not controlled by production ...
S. O. Semenikhin   +3 more
doaj   +1 more source

Testing Jump-Diffusion in Epileptic Brain Dynamics: Impact of Daily Rhythms

open access: yesEntropy, 2021
Stochastic approaches to complex dynamical systems have recently provided broader insights into spatial-temporal aspects of epileptic brain dynamics. Stochastic qualifiers based on higher-order Kramers-Moyal coefficients derived directly from time series
Jutta G. Kurth   +2 more
doaj   +1 more source

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