Results 91 to 100 of about 2,555,203 (372)

Dynamic of a nonautonomous two-species impulsive competitive system with infinite delays

open access: yesOpen Mathematics, 2019
In this paper, we consider a nonautonomous two-species impulsive competitive system with infinite delays. By the impulsive comparison theorem and some mathematical analysis, we investigate the permanence, extinction and global attractivity of the system,
He Mengxin, Li Zhong, Chen Fengde
doaj   +1 more source

An Upper Bound to Zero-Delay Rate Distortion via Kalman Filtering for Vector Gaussian Sources

open access: yes, 2017
We deal with zero-delay source coding of a vector Gaussian autoregressive (AR) source subject to an average mean squared error (MSE) fidelity criterion.
Charalambous, Charalambos D.   +3 more
core   +1 more source

Prediction Model for Etiologic Differentiation of Isolated Vestibular Syndrome in Emergency Settings

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study aimed to develop and validate a predictive model for differentiating central from peripheral etiologies in patients with isolated vestibular syndrome (VS). Methods In this multicenter retrospective cohort study, 506 patients with isolated VS from five hospitals were divided into derivation (n = 301) and validation (n = 205)
Guo Wenting   +12 more
wiley   +1 more source

An augmented moment method for stochastic ensembles with delayed couplings: II. FitzHugh-Nagumo model

open access: yes, 2004
Dynamics of FitzHugh-Nagumo (FN) neuron ensembles with time-delayed couplings subject to white noises, has been studied by using both direct simulations and a semi-analytical augmented moment method (AMM) which has been proposed in a recent paper [H ...
C. van Vreeswijk   +5 more
core   +1 more source

Long time behavior of fractional impulsive stochastic differential equations with infinite delay

open access: yesDiscrete & Continuous Dynamical Systems - B, 2019
This paper is first devoted to the local and global existence of mild solutions for a class of fractional impulsive stochastic differential equations with infinite delay driven by both \begin{document}$\mathbb{K}$\end{document} -valued Q-cylindrical ...
Jiaohui Xu, T. Caraballo
semanticscholar   +1 more source

Impact of APOE ε4 Genotype Load on Cognitive Function and Lipid Metabolism in Patients With Cerebral Small Vessel Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Apolipoprotein ε4 (APOE ε4) is a potent genetic risk factor for Alzheimer's disease (AD). However, its role in cerebral small vessel disease (CSVD) remains unclear. Given the clinical and pathological similarities between CSVD and AD, this study aimed to investigate the associations of APOE ε4 gene dosage with cognitive function and
Tingru Jin   +6 more
wiley   +1 more source

Approximate controllability of abstract impulsive fractional neutral evolution equations with infinite delay in Banach spaces

open access: yesElectronic Journal of Differential Equations, 2013
In this article, we study the approximate controllability of impulsive abstract fractional neutral evolution equations in Banach spaces. The main results are obtained by using Krasnoselkii's fixed point theorem, fractional calculus and methods of ...
Dimplekumar N. Chalishajar   +2 more
doaj  

Controllability of Neutral Fractional Functional Equations with Impulses and Infinite Delay

open access: yesAbstract and Applied Analysis, 2013
We examine the controllability problem for a class of neutral fractional integrodifferential equations with impulses and infinite delay. More precisely, a set of sufficient conditions are derived for the exact controllability of nonlinear neutral ...
R. Ganesh   +4 more
doaj   +1 more source

On Optimal Zero-Delay Coding of Vector Markov Sources

open access: yes, 2014
Optimal zero-delay coding (quantization) of a vector-valued Markov source driven by a noise process is considered. Using a stochastic control problem formulation, the existence and structure of optimal quantization policies are studied.
Linder, Tamás, Yüksel, Serdar
core   +1 more source

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