Results 1 to 10 of about 1,672 (154)

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

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

Spatial and age-dependent population dynamics model with an additional structure: can there be a unique solution? [PDF]

open access: yes, 2013
A simple age-dependent population dynamics model with an additional structure or physiological variable is presented in its variational formulation. Although the model is well-posed, the closed form solution with space variable is difficult to obtain ...
Tchuenche, Jean M.
core  

A Global Attractivity in a Nonmonotone Age-Structured Model with Age Dependent Diffusion and Death Rates

open access: yes, 2017
In this paper, we investigated the global attractivity of the positive constant steady state solution of the mature population $w(t,x)$ governed by the age-structured model: \begin{equation*} \left\{\begin{array}{ll} \frac{\partial u}{\partial t}+\frac ...
Al-Jararha, M.
core   +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

An analysis of hybrid impulsive prey-predator-mutualist system on nonuniform time domains

open access: yesComputational and Mathematical Biophysics
In this work, we propose a hybrid impulsive prey-predator-mutualist model on nonuniform time domains. We have investigated the permanence/persistence results for the proposed model using the comparison theorems of impulsive differential equations and ...
Kumar Anil, Malik Muslim
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

Polynomial Profits in Renewable Resources Management

open access: yes, 2017
A system of renewal equations on a graph provides a framework to describe the exploitation of a biological resource. In this context, we formulate an optimal control problem, prove the existence of an optimal control and ensure that the target cost ...
Colombo, Rinaldo M., Garavello, Mauro
core   +1 more source

Analysis of a vector-borne disease model with vector-bias mechanism in advective heterogeneous environment

open access: yesAdvances in Nonlinear Analysis
This study proposed and analyzed a vector-borne reaction–diffusion–advection model with vector-bias mechanism and heterogeneous parameters in one-dimensional habitat.
Liu Jiaxing, Wang Jinliang
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

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