Results 31 to 40 of about 841 (156)

Global periodic solutions in a plankton-fish interaction model with toxication delay

open access: yesNonlinear Engineering, 2018
In this paper, a plankton-fish interaction model is proposed and analyzed with the help of delay differential equations. Firstly, the elementary dynamical properties of the system in the absence of time delay is discussed.
Sharma Amit
doaj   +1 more source

Global stability of a modified Leslie-Gower model with Beddington-DeAngelis functional response

open access: yes, 2014
A predator-prey model with modified Leslie-Gower and Beddington-DeAngelis functional response is studied. The local stability of the equilibria and the permanence of the system are investigated. By applying the fluctuation lemma, qualitative analysis and
Shengbin Yu
semanticscholar   +1 more source

Inverse problems for self-adjoint Dirac systems: explicit solutions and stability of the procedure [PDF]

open access: yes, 2015
A procedure to recover explicitly self-adjoint matrix Dirac systems on semi-axis (with both discrete and continuous components of spectrum) from rational Weyl functions is considered. Its stability is proved.
A. Sakhnovich
semanticscholar   +1 more source

ℋ∞ constant gain state feedback stabilization of stochastic hybrid systems with Wiener process

open access: yesMathematical Problems in Engineering, Volume 2004, Issue 4, Page 333-345, 2004., 2004
This paper considers the stabilization problem of the class of continuous‐time linear stochastic hybrid systems with Wiener process. The ℋ∞ state feedback stabilization problem is treated. A state feedback controller with constant gain that does not require access to the system mode is designed.
E. K. Boukas, N. F. Al-Muthairi
wiley   +1 more source

Effect of Vaccination to COVID-19 Disease Progression and Herd Immunity

open access: yesComputational and Mathematical Biophysics, 2021
A mathematical model of COVID-19 with a delay-term for the vaccinated compartment is developed. It has parameters accounting for vaccine-induced immunity delay, vaccine effectiveness, vaccination rate, and vaccine-induced immunity duration.
Caga-anan Randy L.   +5 more
doaj   +1 more source

Exponentially dissipative nonlinear dynamical systems: a nonlinear extension of strict positive realness

open access: yesMathematical Problems in Engineering, Volume 2003, Issue 1, Page 25-45, 2003., 2003
We extend the notion of dissipative dynamical systems to formalize the concept of the nonlinear analog of strict positive realness and strict bounded realness. In particular, using exponentially weighted system storage functions with appropriate exponentially weighted supply rates, we introduce the concept of exponential dissipativity.
VijaySekhar Chellaboina   +1 more
wiley   +1 more source

Asymptotic stability of the time-changed stochastic delay differential equations with Markovian switching

open access: yesOpen Mathematics, 2021
The aim of this work is to study the asymptotic stability of the time-changed stochastic delay differential equations (SDDEs) with Markovian switching.
Zhang Xiaozhi   +2 more
doaj   +1 more source

Analysis of chaotic and hyperchaotic conservative complex nonlinear systems

open access: yes, 2017
The aim of this paper is to introduce and analyze chaotic and hyperchaotic conservative complex nonlinear systems. These systems appear in several branches of applied sciences.
M. Gamal, Ahmed K. Mansour
semanticscholar   +1 more source

Stability and stabilizability of dynamical systems with multiple time‐varying delays: delay‐dependent criteria

open access: yesMathematical Problems in Engineering, Volume 2003, Issue 4, Page 137-152, 2003., 2003
This paper deals with the class of uncertain systems with multiple time delays. The stability and stabilizability of this class of systems are considered. Their robustness are also studied when the norm‐bounded uncertainties are considered. Linear matrix inequality (LMIs) delay‐dependent sufficient conditions for both stability and stabilizability and ...
D. Mehdi, E. K. Boukas
wiley   +1 more source

Optimal Control for a Tuberculosis Model with Exogenous Reinfection under the Influence of Stigma

open access: yesComputational and Mathematical Biophysics, 2022
Often described as the world’s most deadly infectious disease, Tuberculosis remains a serious health threat in many parts of the world, especially in the developing countries.
Liguarda Remilou   +2 more
doaj   +1 more source

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