Results 101 to 110 of about 1,893 (192)

Bifurcations of an SIRS model with generalized non-monotone incidence rate

open access: yesAdvances in Difference Equations, 2018
We consider an SIRS epidemic model with a more generalized non-monotone incidence: χ(I)=κIp1+Iq $\chi(I)=\frac{\kappa I^{p}}{1+I^{q}}$ with 01$, by qualitative and bifurcation analyses, we show that the model undergoes a saddle-node bifurcation, a Hopf ...
Jinhui Li, Zhidong Teng
doaj   +1 more source

Numerical Analysis of the Coupled Modified van der Pol Equations in a Model of Heart Action

open access: yesBiomath, 2014
In this paper, a modified van der Pol equations are considered as a description of the heart action. Wide ranges of the model parameters yield interesting qualitative results, e.g.
Beata Zduniak
doaj   +1 more source

Practical initialization of homoclinic orbits from a Bogdanov-Takens point [PDF]

open access: yes, 2014
In a recent paper [IJBC, 24(04):1450057, 2014], we improved the theoretical base for the initialization of homoclinic orbits. However, practical application of this method is not very robust without the consideration of some numerical issues.
Al-Hdaibat, Bashir   +3 more
core   +1 more source

Bifurcation of a Leslie–Gower Predator–Prey Model with Nonlinear Harvesting and a Generalist Predator

open access: yesAxioms
A Leslie–Gower predator–prey model with nonlinear harvesting and a generalist predator is considered in this paper. It is shown that the degenerate positive equilibrium of the system is a cusp of codimension up to 4, and the system admits the cusp-type ...
Mengxin He, Zhong Li
doaj   +1 more source

The Influence of Generalist Predator and Michaelis–Menten Harvesting in a Holling–Tanner Model

open access: yesAxioms
In this paper, a Holling–Tanner predator–prey model with generalist predators and Michaelis–Menten-type prey harvesting is investigated. We analyze the existence and stability of equilibria and find the system has at most three positive equilibria.
Tanglei Huang, Huiling Wu, Zhong Li
doaj   +1 more source

Complete Hopf and Bogdanov-Takens Bifurcation Analysis on Two Epidemic Models [PDF]

open access: yes, 2022
Infectious diseases are a global problem that harms people’s health and well-being and severely threatens human survival. As an epidemiological model, the SIR model is commonly referred to as forecasting how illnesses will spread, how many people will become sick, and how long an epidemic will last. It is also possible to estimate other epidemiological
openaire  

Home - About - Disclaimer - Privacy