Results 11 to 20 of about 6,679 (236)

Dynamics in a Nonautonomous Nicholson-Type Delay System

open access: yesJournal of Mathematics, 2021
A kind of Nicholson-type delay system is considered. Several conditions on the ultimate boundedness, extinction, permanence, periodic solution, and global attractivity of the system are established by employing the inequality techniques and comparison ...
Ahmadjan Muhammadhaji, Azhar Halik
doaj   +1 more source

Feedback stabilization for a chemostat with delayed output

open access: yesMathematical Biosciences and Engineering, 2009
We apply basic tools of control theory toa chemostat model that describes the growth of onespecies of microorganisms that consume a limiting substrate.
Gonzalo Robledo
doaj   +1 more source

Feedback Control in a Periodic Delay Single-Species Difference System

open access: yesDiscrete Dynamics in Nature and Society, 2011
A periodic delay single-species difference system with feedback control is established. With the help of analysis method and Lyapunov function, a good understanding of the permanence and global attractivity of the system is gained.
Yi Yang, Zhijun Liu
doaj   +1 more source

Note on the Stability Property of a Cooperative System Incorporating Harvesting

open access: yesDiscrete Dynamics in Nature and Society, 2014
The stability of a kind of cooperative model incorporating harvesting is revisited in this paper. By using an iterative method, the global attractivity of the interior equilibrium point of the system is investigated.
Xiangdong Xie, Fengde Chen, Yalong Xue
doaj   +1 more source

Wheeler-Dewitt Metric and the Attractivity of Gravity [PDF]

open access: yes, 1994
We investigate the class of ultralocal metrics on the configuration space of canonical gravity. It is described by a parameter $\alpha$, where $\alpha=0.5$ corresponds to general relativity.
Claus Kiefer   +7 more
core   +3 more sources

Global Existence and Stability for Neutral Functional Evolution Equations with State-Dependent Delay

open access: yesNonautonomous Dynamical Systems, 2014
In this paper we prove the global existence and attractivity of mild solutions for neutral semilinear evolution equations with state-dependent delay in a Banach space.
Baliki Abdessalam, Benchohra Mouffak
doaj   +1 more source

Population dynamical behavior of non-autonomous Lotka-Volterra competitive system with random perturbation [PDF]

open access: yes, 2009
In this paper, we consider a non-autonomous stochastic Lotka-Volterra competitive system dxi(t) = xi(t)[(bi(t)¡ nPj=1aij (t)xj (t))dt+¾i(t)dBi(t)], where Bi(t) (i = 1; 2; ¢ ¢ ¢ ; n) are independent standard Brownian motions. Some dynamical properties are
Key Laboratory for Applied Statistics of MOE (KLAS) (Funder)   +4 more
core   +1 more source

Stability property of the boundary equilibria of a symbiotic model of commensalism and parasitism with harvesting in commensal populations

open access: yesAIMS Mathematics, 2022
This article demonstrates the stability property of two boundary equilibria of a symbiotic model of commensalism and parasitism with harvesting in the commensal population. The model was proposed by Nurmaini Puspitasari, Wuryansari Muharini Kusumawinahyu,
Xiaowan Liu, Qin Yue
doaj   +1 more source

A dual modelling of evolving political opinion networks

open access: yes, 2012
We present the result of a dual modeling of opinion network. The model complements the agent-based opinion models by attaching to the social agent (voters) network a political opinion (party) network having its own intrinsic mechanisms of evolution ...
D. Stauffer   +5 more
core   +1 more source

Preferential attachment mechanism of complex network growth: "rich-gets-richer" or "fit-gets-richer"?

open access: yes, 2018
We analyze the growth models for complex networks including preferential attachment (A.-L. Barabasi and R. Albert, Science 286, 509 (1999)) and fitness model (Caldarelli et al., Phys. Rev. Lett. 89, 258702 (2002)) and demonstrate that, under very general
Golosovsky, Michael
core   +1 more source

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