Results 61 to 70 of about 1,596 (131)

Hopf bifurcation and Turing instability in a diffusive predator-prey model with hunting cooperation

open access: yesOpen Mathematics, 2022
In this article, we study Hopf bifurcation and Turing instability of a diffusive predator-prey model with hunting cooperation. For the local model, we analyze the stability of the equilibrium and derive conditions for determining the direction of Hopf ...
Miao Liangying, He Zhiqian
doaj   +1 more source

Modeling and sensitivity analysis of HBV epidemic model with convex incidence rate

open access: yesResults in Physics, 2021
In this article, we study the qualitative analysis of the Hepatitis B epidemic model with convex incidence rate. First, we formulate the model without control and study local and global stability.
Amir Khan   +5 more
doaj   +1 more source

A stochastic differential game of low carbon technology sharing in collaborative innovation system of superior enterprises and inferior enterprises under uncertain environment

open access: yesOpen Mathematics, 2018
Considering the fact that the development of low carbon economy calls for the low carbon technology sharing between interested enterprises, this paper study a stochastic differential game of low carbon technology sharing in collaborative innovation ...
Yin Shi, Li Baizhou
doaj   +1 more source

On positive solutions and the Omega limit set for a class of delay differential equations

open access: yes, 2012
This paper studies the positive solutions of a class of delay differential equations with two delays. These equations originate from the modeling of hematopoietic cell populations. We give a sufficient condition on the initial function for $t\leq 0$ such
B. Dorizzi   +15 more
core   +1 more source

Periodic traveling fronts for partially degenerate reaction-diffusion systems with bistable and time-periodic nonlinearity

open access: yesAdvances in Nonlinear Analysis, 2019
This paper is concerned with the periodic traveling fronts for partially degenerate reaction-diffusion systems with bistable and time-periodic nonlinearity.
Wu Shi-Liang, Hsu Cheng-Hsiung
doaj   +1 more source

Dynamic model of COVID-19 and citizens reaction using fractional derivative

open access: yesAlexandria Engineering Journal, 2021
This paper presents dynamic model of COVID-19 and citizens reaction from a fraction of the population in Nigeria using fractional derivative. We consider the reported cases from February to June 2020 using fractional derivative. The Stability analysis of
R.B. Ogunrinde   +4 more
doaj   +1 more source

Global dynamics, Neimark-Sacker bifurcation and hybrid control in a Leslie’s prey-predator model

open access: yesAlexandria Engineering Journal, 2022
In the present study, we explore the topological classifications at fixed points, global dynamics, Neimark-Sacker bifurcation and hybrid control in the two-dimensional discrete-time Leslie’s prey-predator model.
A.Q. Khan   +2 more
doaj   +1 more source

On the limit configuration of four species strongly competing systems

open access: yes, 2019
We analysed some qualitative properties of the limit configuration of the solutions of a reaction-diffusion system of four competing species as the competition rate tends to infinity.
Lanzara, Flavia, Montefusco, Eugenio
core   +1 more source

Analyzing a generalized pest-natural enemy model with nonlinear impulsive control

open access: yesOpen Mathematics, 2018
Due to resource limitation, nonlinear impulsive control tactics related to integrated pest management have been proposed in a generalized pest-natural enemy model, which allows us to address the effects of nonlinear pulse control on the dynamics and ...
Li Changtong, Tang Sanyi
doaj   +1 more source

Binary trees, exploration processes, and an extented Ray--Knight Theorem

open access: yes, 2012
We study the bijection between binary Galton--Watson trees in continuous time and their exploration process, both in the sub- and in the supercritical cases.
Ba, Mamadou   +2 more
core   +3 more sources

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