Results 21 to 30 of about 10,600,403 (228)

Research on two dimensional Wiener stochastic degradation model based on the wear model

open access: yesMATEC Web of Conferences, 2018
One dimensional Wiener degradation process is often used to describe the degradation of product performance. However one dimensional Wiener degradation process doesn’t sufficiently consider the relevance of multiple degradation factors and wear process ...
Zhang Hui, Yao Jun, Zhao Yan-Lin
doaj   +1 more source

On the random search for a randomly moving particle

open access: yesJournal of Taibah University for Science, 2022
This paper discusses some methods based on the random search problem over the bound domain. The particle moves randomly with a bounded two-dimensional stochastic process in a bounded area.
Mohamed Abd Allah El-Hadidy
doaj   +1 more source

ON AN ESTIMATE OF PROBABILITY OF EXCEEDING A LINE BY WEIGHTED AGGREGATE OF SUB-GAUSSIAN RANDOM PROCESSES

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2020
Sub-gaussian random variables are majorized in distribution by Gaussian random variables, and thus are their natural generalization. This paper considers the problem of estimating the probability of exceeding a level given by a line ct, c>0, by ...
Р. Є. Ямненко   +1 more
doaj   +1 more source

On the Representation of the Goursat Boundary Problem Solution for the First Order Partial Derivatives Stochastic Hyperbolic Equations

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
We study the standard canonical form of a stochastic analog of a system of linear partial differential equations of first order hyperbolic type with Goursat boundary conditions.
K.B. Mansimov, R.O. Mastaliyev
doaj   +1 more source

Some Existence Results for Systems of Impulsive Stochastic Differential Equations

open access: yesAnnales Mathematicae Silesianae, 2021
In this paper we study a class of impulsive systems of stochastic differential equations with infinite Brownian motions. Sufficient conditions for the existence and uniqueness of solutions are established by mean of some fixed point theorems in vector ...
Mekki Sliman   +3 more
doaj   +1 more source

Nonlinear Degradation Modeling and Residual Life Prediction for Rollers Based on Kernel-based Wiener Process

open access: yesShanghai Jiaotong Daxue xuebao, 2023
In the process of steel rolling, due to wear and other reasons, the working performance of the roll under long and complex working conditions has a gradual decline.
WANG Hanyu, CHEN Zhen, ZHOU Di, CHEN Zhaoxiang, PAN Ershun
doaj   +1 more source

Modeling of complex-valued Wiener systems using B-spline neural network

open access: yes, 2011
In this brief, a new complex-valued B-spline neural network is introduced in order to model the complex-valued Wiener system using observational input/output data. The complex-valued nonlinear static function in the Wiener system is represented using the
Hong, Xia   +3 more
core   +2 more sources

A Unified Approach for the Identification of Wiener, Hammerstein, and Wiener–Hammerstein Models by Using WH-EA and Multistep Signals

open access: yesComplexity, 2020
Wiener, Hammerstein, and Wiener–Hammerstein structures are useful for modelling dynamic systems that exhibit a static type nonlinearity. Many methods to identify these systems can be found in the literature; however, choosing a method requires prior ...
J. Zambrano   +3 more
doaj   +1 more source

Prediction of remaining useful life time of aero engine based on the Wiener process of three-source uncertainty

open access: yesXi'an Gongcheng Daxue xuebao, 2021
Given the problem of three-sources uncertainty in aero engine degradation process and the assumption of normal distribution of measurement error in existing research, a Wiener process aero engine residual useful life time(RUL) prediction method with ...
Guangshe ZHAO, Chuntao ZHAO
doaj   +1 more source

NIR Spectroscopy and Machine Learning for the Quantification of Blended Textiles: Towards Improved Understanding for Textile Recycling

open access: yesApplied Sciences
Accurate quantification of cotton content is a key prerequisite for efficient textile recycling. However, it remains challenging due to material heterogeneity and technical limitations.
David Lilek   +7 more
doaj   +1 more source

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