Results 71 to 80 of about 1,672 (154)

Complex dynamics of a nonlinear discrete predator-prey system with Allee effect

open access: yesOpen Mathematics
The transition between strong and weak Allee effects in prey provides a simple regime shift in ecology. In this article, we study a discrete predator-prey system with Holling type II functional response and Allee effect. First, the number of fixed points
Wang Jing, Lei Ceyu
doaj   +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

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

Global Stability Analysis of a General Model of Zika Virus

open access: yesNonautonomous Dynamical Systems, 2019
Mathematical models of Zika virus dynamics are relatively new, and they mostly focus on either vector and horizontal, or vector and vertical transmission only.
Bessey K., Mavis M., Rebaza J., Zhang J.
doaj   +1 more source

Verhulst's logistic curve

open access: yes, 2007
We observe that the elementary logistic differential equation dP/dt=(1-P/M)kP may be solved by first changing the variable to R=(M-P)/P. This reduces the logistic differential equation to the simple linear differential equation dR/dt=-kR, which can be ...
Bradley, David M.
core   +1 more source

Dynamic behaviors of a Lotka-Volterra type predator-prey system with Allee effect on the predator species and density dependent birth rate on the prey species

open access: yesOpen Mathematics, 2019
A Lotka-Volterra type predator-prey system with Allee effect on the predator species and density dependent birth rate on the prey species is proposed and studied.
Chen Fengde   +3 more
doaj   +1 more source

A new proof of the competitive exclusion principle in the chemostat

open access: yes, 2017
We give an new proof of the well-known competitive exclusion principle in the chemostat model with $n$ species competing for a single resource, for any set of increasing growth functions. The proof is constructed by induction on the number of the species,
Rapaport, Alain, Veruete, Mario
core  

Dynamics for a discrete competition and cooperation model of two enterprises with multiple delays and feedback controls

open access: yesOpen Mathematics, 2017
This paper is concerned with a competition and cooperation model of two enterprises with multiple delays and feedback controls. With the aid of the difference inequality theory, we have obtained some sufficient conditions which guarantee the permanence ...
Lu Lin, Lian Yi, Li Chaoling
doaj   +1 more source

Coexistence for a kind of stochastic three-species competitive models

open access: yesOpen Mathematics, 2019
The coexistence of species sustains the ecological balance in nature. This paper focuses on sufficient conditions for the coexistence of a three-species stochastic competitive model, where the model has non-linear diffusion parts.
Huang Nantian   +3 more
doaj   +1 more source

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