Results 21 to 30 of about 82,300 (309)

Quantifying the noise of a quantum channel by noise addition [PDF]

open access: yesPhysical Review A, 2012
In this paper we introduce a way to quantify the noise level associated to a given quantum transformation. The key mechanism lying at the heart of the proposal is "noise addition": in other words we compute the amount of extra noise we need to add to the system, through convex combination with a reference noisy map or by reiterative applications of the
DE PASQUALE A, GIOVANNETTI, VITTORIO
openaire   +3 more sources

Detection and Estimation of Abrupt Changes contaminated by Multiplicative Gaussian Noise [PDF]

open access: yes, 1998
The problem of abrupt change detection has received much attention in the literature. The Neyman Pearson detector can be derived and yields the well-known CUSUM algorithm, when the abrupt change is contaminated by an additive noise.
Jean-Yves Tourneret   +1 more
core   +1 more source

Enhancing Image Quality via Robust Noise Filtering Using Redescending M-Estimators

open access: yesEntropy, 2023
In the field of image processing, noise represents an unwanted component that can occur during signal acquisition, transmission, and storage. In this paper, we introduce an efficient method that incorporates redescending M-estimators within the framework
Ángel Arturo Rendón-Castro   +3 more
doaj   +1 more source

Random attractors for stochastic retarded strongly damped wave equations with additive noise on bounded domains

open access: yesOpen Mathematics, 2019
In this paper we study the asymptotic behavior for a class of stochastic retarded strongly damped wave equation with additive noise on a bounded smooth domain in ℝd. We get the existence of the random attractor for the random dynamical systems associated
Jia Xiaoyao, Ding Xiaoquan
doaj   +1 more source

Approximations of center manifolds for delay stochastic differential equations with additive noise

open access: yesAdvances in Nonlinear Analysis, 2023
This article deals with approximations of center manifolds for delay stochastic differential equations with additive noise. We first prove the existence and smoothness of random center manifolds for these approximation equations. Then we show that the Ck{
Wu Longyu   +3 more
doaj   +1 more source

Dynamical behaviors of stochastic local Swift-Hohenberg equation on unbounded domain

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we first study the deterministic Swift-Hohenberg equation on a bounded domain. After obtaining some a priori estimates by the uniform Gronwall inequality, we prove the existence of an attractor by the Sobolev compact embeddings.
CX Guo, YY Chen, YF Guo
doaj   +1 more source

The effect of additive noise on dynamical hysteresis [PDF]

open access: yesNonlinearity, 2002
Preprint: Weierstraß-Institut für Angewandte Analysis und Stochastik, vol ...
Berglund, Nils, Gentz, Barbara
openaire   +3 more sources

Numerical simulation of a linear stochastic oscillator with additive noise [PDF]

open access: yes, 2004
The ability of numerical methods to reproduce long-time features of a linear stochastic oscillator is examined. It is shown that certain, widely-used, methods fail to capture the correct second moment growth rate, whereas a customized extension of the ...
Strømmen Melbø, A.H., Higham, D.J.
core   +1 more source

Detection of multiplicative noise in stationary random processes using second- and higher order statistics [PDF]

open access: yes, 2000
This paper addresses the problem of detecting the presence of colored multiplicative noise, when the information process can be modeled as a parametric ARMA process.
Coulon, Martial   +2 more
core   +1 more source

Pathwise McKean-Vlasov theory with additive noise [PDF]

open access: yes, 2018
We take a pathwise approach to classical McKean-Vlasov stochastic differential equations with additive noise, as e.g. exposed in Sznitmann [34]. Our study was prompted by some concrete problems in battery modelling [19], and also by recent progress on ...
Maurelli, Mario   +8 more
core   +1 more source

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