Results 21 to 30 of about 230,519 (312)

On the expectation of the local time of the fractional Brownian motion

open access: yesScientific African
In this paper, we prove some new formulas of the expectations of LBH and LBH the local time and the weighted local time of BH the fractional Brownian motion with Hurst parameter H.
Allaoui Omar   +2 more
doaj   +1 more source

Synthesis of ℋ Control for Descriptor Hybrid Systems with Actuator Saturation

open access: yesMachines
This paper addresses a mode-dependent state-feedback H∞ control for stochastic descriptor hybrid systems, considering both the absence and presence of actuator saturation.
Chan-eun Park
doaj   +1 more source

Weak solutions and optimal controls of stochastic fractional reaction-diffusion systems

open access: yesOpen Mathematics, 2020
The aim of this paper is to investigate a class of nonlinear stochastic reaction-diffusion systems involving fractional Laplacian in a bounded domain. First, the existence and uniqueness of weak solutions are proved by using Galërkin’s method.
Fu Yongqiang, Yan Lixu
doaj   +1 more source

Hybrid Partial-Data-Driven H Robust Tracking Control for Linear Stochastic Systems with Discrete-Time Observation of Reference Trajectory

open access: yesMathematics
A hybrid robust H∞ tracking-control design method is studied for linear stochastic systems in which the parameters of the reference system are unknown but inferred from discrete-time observations.
Yiteng Zhang, Xiangyun Lin, Rui Zhang
doaj   +1 more source

Methodological Tools for the Detection of Risks to the Welfare of the Individuals and the Territory of Residence [PDF]

open access: yesЭкономика региона, 2017
To formalise the assessment of risks to the welfare of individuals and the territory of residence presents a relevant issue. This study aims to define the economic security in the structure of the system of the welfare of individuals and the territory ...
Aleksandr Anatolyevich Kuklin   +3 more
doaj   +1 more source

CALCULATION OF WEIGHT COEFFICIENTS IN CONTINUOUS PARTICLE FILTER

open access: yesНаучный вестник МГТУ ГА, 2018
This article shows the relationship between filters based on modeling of the random process paths with terminating and branching and a continuous particle filter that are related to sequential Monte Carlo methods.
K. A. Rybakov
doaj   +1 more source

Stochastic hamiltonian dynamical systems [PDF]

open access: yesReports on Mathematical Physics, 2008
46 pages. A converse to the Critical Action Principle has been added. The discussion on conserved quantities has been extended and linked to the study of the stability of equilibria of the solution ...
Lázaro-Camí, Joan-Andreu   +1 more
openaire   +2 more sources

New Results Concerning Approximate Controllability of Conformable Fractional Noninstantaneous Impulsive Stochastic Evolution Equations via Poisson Jumps

open access: yesMathematics, 2023
We introduce the conformable fractional (CF) noninstantaneous impulsive stochastic evolution equations with fractional Brownian motion (fBm) and Poisson jumps. The approximate controllability for the considered problem was investigated.
Yazid Alhojilan, Hamdy M. Ahmed
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Approximate controllability of Sobolev type fractional stochastic nonlocal nonlinear differential equations in Hilbert spaces

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
We introduce a new notion called fractional stochastic nonlocal condition, and then we study approximate controllability of class of fractional stochastic nonlinear differential equations of Sobolev type in Hilbert spaces.
Mourad Kerboua   +2 more
doaj   +1 more source

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