Results 91 to 100 of about 257,023 (328)
Lie group classification of first-order delay ordinary differential equations
, 2017 A group classification of first-order delay ordinary differential equation (DODE) accompanied by an equation for delay parameter (delay relation) is presented.
Dorodnitsyn, Vladimir A. +3 more
core +1 more source
Boundedness and periodic solutions in infinite delay systems
Journal of Mathematical Analysis and Applications, 1992 The boundedness and the existence of periodic solutions to the functional equation (1) \(x'(t)=F(t,x(t+s))\) is considered, where \(F\in {\mathcal C}(R\times C_ g,R^ n)\) and \(-h\leq s\leq 0\). Using the Lyapunov functional method conditions are established under which solutions to (1) are uniformly bounded and uniformly ultimately bounded with ...
openaire +3 more sources
Prediction Model for Etiologic Differentiation of Isolated Vestibular Syndrome in Emergency Settings
Annals 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
Uniform Asymptotic Stability in Infinite Delay Systems
Journal of Mathematical Analysis and Applications, 1993 Using the technique of Lyapunov functionals, the author derives conditions for uniform asymptotic stability of infinite delay functional differential systems of the type \(x'(t)= f(t,x_ t)\), where \(x(t)\in \mathbb{R}^ n\) and \(x_ t(s)= x(t+ s)\), \(s\leq 0\).
openaire +3 more sources
Annals 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
Multivalued evolution equations with infinite delay in Fréchet spaces
Electronic Journal of Qualitative Theory of Differential Equations, 2008 In this paper, sufficient conditions are given to investigate the existence of mild solutions on a semi-infinite interval for two classes of first order semilinear functional and neutral functional differential evolution inclusions with infinite delay ...
Selma BAGHLI-BENDIMERAD +1 more
doaj +1 more source
Solution of differential equations with infinite delay via coupled fixed point. [PDF]
Heliyon, 2022 Mebarki K +4 more
europepmc +1 more source
Phase delay time and superluminal propagation in barrier tunneling
, 2004 In this work we study the behaviour of Wigner phase delay time for tunneling in the reflection mode. Our system consists of a circular loop connected to a single wire of semi-infinite length in the presence of Aharonov-Bohm flux.
Bandopadhyay, Swarnali +1 more
core
Arthritis Care &Research, Accepted Article.Objectives Australian evidence on lived and care experiences of chronic musculoskeletal shoulder pain (CMSP), irrespective of disorder classification or disease, is limited. However, such evidence is important for person‐centred care and informing local service pathways and care guidelines or standards.
Sonia Ranelli +8 more
wiley +1 more source
Threshold dynamics of difference equations for SEIR model with nonlinear incidence function and infinite delay. [PDF]
Eur Phys J Plus, 2021 Bentout S +3 more
europepmc +1 more source