Results 21 to 30 of about 76 (75)

Global structure of positive and sign-changing periodic solutions for the equations with Minkowski-curvature operator

Advanced Nonlinear Studies
We show the existence of unbounded connected components of 2π-periodic positive solutions for the equations with one-dimensional Minkowski-curvature operator −u′1−u′2′=λa(x)f(u,u′),x∈R, $-{\left(\frac{{u}^{\prime }}{\sqrt{1-{u}^{\prime 2}}}\right ...
Ma Ruyun, Zhao Zhongzi, Su Xiaoxiao
doaj   +1 more source

A model of competing species that exhibits zip bifurcation

Revista Integración, 2017
The purpose of this paper is to present a concrete model of competing population species that exhibits a phenomenon called zip bifurcation. The Zip Bifurcation was introduced by Farkas in 1984 for a three dimensional ODE prey-predator system describing a
Luis F. Echeverri, Óscar I. Giraldo, Edwin Zarrazola   +2 more
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Bifurcation analysis of a nonlinear diffusion model: Effect of evaluation period for the diffusion of a technology

Arab Journal of Mathematical Sciences, 2019
A nonlinear modified form of Bass model involving the interactions of non-adopter and adopter populations has been proposed to describe the process of diffusion of a new technology in the presence of evaluation period (time delay).
Rakesh Kumar, Anuj Kumar Sharma, Kulbhushan Agnihotri   +2 more
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Endemic oscillations for SARS-CoV-2 Omicron-A SIRS model analysis. [PDF]

Chaos Solitons Fractals, 2023
Nill F.
europepmc   +2 more sources

Periodic or homoclinic orbit bifurcated from a heteroclinic loop for high-dimensional systems

Open Mathematics
Consider an autonomous ordinary differential equation in Rn{{\mathbb{R}}}^{n}, which has a heteroclinic loop. Assume that the heteroclinic loop consists of two degenerate heteroclinic orbits γ1{\gamma }_{1}, γ2{\gamma }_{2} and two saddle points with ...
Long Bin, Yang Yiying
doaj   +1 more source

A diffusive plant-sulphide model: spatio-temporal dynamics contrast between discrete and distributed delay

European Journal of Applied Mathematics
This paper studies the spatio-temporal dynamics of a diffusive plant-sulphide model with toxicity delay. More specifically, the effects of discrete delay and distributed delay on the dynamics are explored, respectively.
Yonghui Xia, Jianglong Xiao, Jianshe Yu
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Mathematical modelling of COVID-19 dynamics using SVEAIQHR model

Computational and Mathematical Biophysics
In this study, we formulate an eight-compartment mathematical model with vaccination as one of the compartments to analyze the dynamics of COVID-19 transmission.
Venkatesh Ambalarajan, Rao Mallela Ankamma, Raj Murugadoss Prakash, Kumar Karuppusamy Arun, Vamsi D. K. K.   +4 more
doaj   +1 more source

Bifurcations of a modified Leslie–Gower predator–prey model with fear, Allee effect and hunting cooperation strategy

Journal of Biological Dynamics
The fear preoften leads to changes in the physiological characteristics of the prey. Different stages of prey exhibit different physiological behaviours, such as susceptibility to predator risk, which often leads to Allee effect.
Weili Kong, Yuanfu Shao
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Hunting cooperation in a prey–predator model with maturation delay

Journal of Biological Dynamics
We investigate the dynamics of a prey–predator model with cooperative hunting among specialist predators and maturation delay in predator growth. First, we consider a model without delay and explore the effect of hunting time on the coexistence of ...
Yoichi Enatsu, Jyotirmoy Roy, Malay Banerjee   +2 more
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Sustainable harvesting strategy in an ecological competition model with interference

Journal of Biological Dynamics
This paper examines a three-species ecological competition model with two predators and one prey, incorporating food-limited growth and both linear and quadratic harvesting strategies.
Peng Feng
doaj   +1 more source