Results 131 to 140 of about 5,198,351 (376)

Global attractor in competitive Lotka–Volterra systems [PDF]

open access: yesMathematische Nachrichten, 2009
AbstractFor autonomous Lotka–Volterra systems of differential equations modelling the dynamics of n competing species, new criteria are established for the existence of a single point global attractor. Under the conditions of these criteria, some of the species will survive and stabilise at a steady state whereas the others, if any, will die out ...
openaire   +3 more sources

Asymptotic behavior of a delay predator-prey system with stage structure and variable coefficients

open access: yesElectronic Journal of Differential Equations, 2008
In this paper, we establish a global attractor for a Lotka-Volterra type reaction-diffusion predator-prey model with stage structure for the predator, delay due to maturity and variable coefficients.
Javier A. Hernandez-Pinzon   +2 more
doaj  

Time-Dependent Global Attractor for a Class of Nonclassical Parabolic Equations

open access: yesJournal of Applied Mathematics, 2014
Based on the recent theory of time-dependent global attractors in the works of Conti et al. (2013) and di Plinio et al. (2011), we prove the existence of time-dependent global attractors as well as the regularity of the time-dependent global attractor ...
Fang-hong Zhang
doaj   +1 more source

Global dynamics of a fourth-order parabolic equation describing crystal surface growth

open access: yesNonlinear Analysis, 2019
In this paper, we study the global dynamics for the solution semiflow of a fourth-order parabolic equation describing crystal surface growth. We show that the equation has a global attractor in H4per(Ω) when the initial value belongs to H1per(Ω).
Ning Duan, Xianyun Xu
doaj   +1 more source

Changes in Immune‐Inflammation Status and Acute Ischemic Stroke Prognosis in Prospective Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Inflammation is a critical risk factor for poor outcomes in cerebral infarction. Prior studies focused primarily on baseline inflammation status, neglecting dynamic longitudinal changes. We try to investigate the association between immune‐inflammation status alterations and stroke prognosis, and evaluated three systemic biomarkers'
Songfang Chen   +11 more
wiley   +1 more source

Global Attractors for a Semilinear Hyperbolic Equation in Viscoelasticity

open access: yesJournal of Mathematical Analysis and Applications, 2001
A semilinear partial differential equation of hyperbolic type with a convolution term describing simple viscoelastic materials with fading memory is considered. Regarding the past history (memory) of the displacement as a new variable, the equation is transformed into a dynamical system in a suitable Hilbert space.
C. Giorgi   +2 more
openaire   +4 more sources

The McCance Brain Care Score and Mortality: Evidence From a Large‐Scale Population‐Based Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives This study aimed to examine the relationship between the McCance Brain Care Score (BCS) and mortality in the general population. Methods We conducted a prospective, population‐based cohort study using data from the UK Biobank. Participants with complete data enabling calculation of BCS and full mortality information were included ...
Zhiqiang Xu, Xiaoxiao Wang, Nan Li
wiley   +1 more source

Refractory Status Epilepticus Treated With Bilateral Pulvinar Deep Brain Stimulation—A Case Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT New‐onset refractory status epilepticus (NORSE) arises without an identifiable cause or prior epilepsy history, with a 16%–27% mortality rate and significant long‐term neurological sequelae. Neuromodulation such as deep brain stimulation (DBS) targeting the anterior and centromedian thalamic nuclei has shown promise when the traditional ...
Mengxuan Tang   +16 more
wiley   +1 more source

The Structure of Global Attractors for Dissipative Zakharov Systems with Forcing on the Torus

open access: green, 2021
M. Burak Erdoğan   +3 more
openalex   +1 more source

Large diffusivity finite-dimensional asymptotic behaviour of a semilinear wave equation

open access: yesJournal of Applied Mathematics, 2003
We study the effects of large diffusivity in all parts of the domain in a linearly damped wave equation subject to standard zero Robin-type boundary conditions.
Robert Willie
doaj   +1 more source

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