Results 101 to 110 of about 42,377 (221)

Dynamic Behaviors of a General Discrete Nonautonomous System of Plankton Allelopathy with Delays

open access: yesDiscrete Dynamics in Nature and Society, 2008
We study the dynamic behaviors of a general discrete nonautonomous system of plankton allelopathy with delays. We first show that under some suitable assumption, the system is permanent.
Yaoping Chen, Fengde Chen, Zhong Li
doaj   +1 more source

Change Point Analysis for Functional Data Using Empirical Characteristic Functionals

open access: yesJournal of Time Series Analysis, Volume 47, Issue 3, Page 612-631, May 2026.
ABSTRACT We develop a new method to detect change points in the distribution of functional data based on integrated CUSUM processes of empirical characteristic functionals. Asymptotic results are presented under conditions allowing for low‐order moments and serial dependence in the data establishing the limiting null‐distribution of the proposed test ...
Lajos Horváth   +2 more
wiley   +1 more source

LaSalle-Type Theorems for General Nonlinear Stochastic Functional Differential Equations by Multiple Lyapunov Functions

open access: yesAbstract and Applied Analysis, 2014
We investigate LaSalle-type theorems for general nonlinear stochastic functional differential equations. With some preliminaries on lemmas and the derivation techniques, we establish three LaSalle-type theorems for the general nonlinear stochastic ...
Xueyan Zhao, Feiqi Deng, Xiaojing Zhong
doaj   +1 more source

Efficient Energy‐Stable Discontinuous Galerkin Scheme for the Non‐Isothermal Cahn–Hilliard–Navier–Stokes Two‐Phase Fluid Flow System

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 7, 15 April 2026.
ABSTRACT In this article, we propose a novel numerical framework for the non‐isothermal Cahn–Hilliard–Navier–Stokes two‐phase flow system, which couples the incompressible Navier–Stokes equations, the Cahn–Hilliard phase‐field equation, and the heat transport equation to capture temperature‐dependent two‐phase flow dynamics.
Guang‐An Zou   +4 more
wiley   +1 more source

Stabilization and control of unstable discrete linear delay systems using pole-placement and Lyapunov-Krasovskii Functional Methods

open access: yesمجلة جامعة الزيتونة
Stabilizing and controlling unstable discrete linear delay systems present significant challenges, primarily due to the destabilizing effects of time delays.
Abdunaser Abdusamad, Farag Mousa
doaj  

Stability Analysis of Anti-Periodic Solutions for Cohen–Grossberg Neural Networks with Inertial Term and Time Delays

open access: yesMathematics
This work is dedicated to exploring the globally exponential stability of anti-periodic solutions in inertial CGNNs that incorporate time delays. This is based on a strategic variable substitution to transform the complex system into a first-order ...
Jiaxin Cheng, Weide Liu
doaj   +1 more source

Local Hypoellipticity by Lyapunov Function

open access: yesAbstract and Applied Analysis, 2016
We treat the local hypoellipticity, in the first degree, for a class of abstract differential operators complexes; the ones are given by the following differential operators:Lj=∂/∂tj+(∂ϕ/∂tj)(t,A)A,j=1,2,…,n, whereA:D(A)⊂H→His a self-adjoint linear operator, positive with0∈ρ(A), in a Hilbert spaceH, andϕ=ϕ(t,A)is a series of nonnegative powers ofA ...
openaire   +4 more sources

Trajectory tracking control of trackless rubber-tired vehicles in underground mines under multi-sensor time delays

open access: yesGong-kuang zidonghua
The underground mine unmanned driving system typically uses SLAM algorithms based on vision and Light Detection and Ranging (LiDAR) sensors for scene reconstruction and vehicle positioning.
TAN Zhen   +6 more
doaj   +1 more source

Lyapunov stabilizability of controlled diffusions via a superoptimality principle for viscosity solutions

open access: yes, 2005
We prove optimality principles for semicontinuous bounded viscosity solutions of Hamilton-Jacobi-Bellman equations. In particular we provide a representation formula for viscosity supersolutions as value functions of suitable obstacle control problems ...
Cesaroni, Annalisa
core  

A note on the qualitative analysis of Volterra integro-differential equations

open access: yesJournal of Taibah University for Science, 2019
The aim of paper is to analyse some qualitative properties of solutions of nonlinear Volterra integro-differential equations (VIDDEs) with constant delay and Volterra integro-differential equations (VIDEs) without delay by means of the Razumikhin method.
Cemil Tunç, Osman Tunç
doaj   +1 more source

Home - About - Disclaimer - Privacy