Results 31 to 40 of about 89 (87)

Endemic oscillations for SARS-CoV-2 Omicron-A SIRS model analysis. [PDF]

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

Bifurcations for Hamiltonian systems

Advanced Nonlinear Studies
Our assumptions and results include the following special versions: for a topological space Λ and H∈C(Λ×S1×R2n) $H\in C\left({\Lambda}{\times}{S}^{1}{\times}{\mathbb{R}}^{2n}\right)$ , S1=R/Z ${S}^{1}=\mathbb{R}/\mathbb{Z}$ , suppose that each H(λ, t, ⋅)
Lu Guangcun
doaj   +1 more source

© Hindawi Publishing Corp. ON STABILITY AND BIFURCATION OF SOLUTIONS OF AN SEIR EPIDEMIC MODEL WITH VERTICAL TRANSMISSION

, 2003
A four-dimensional SEIR epidemic model is considered. The stability of the equilibria is established. Hopf bifurcation and center manifold theories are applied for a reduced threedimensional epidemic model.
M. M. A. El-sheikh, S. A. A. El-marouf
core  

Bifurcation dynamics and novel controller design of a modified 2D predator–prey model

Open Mathematics
To effectively manage biological populations in ecosystems, this paper introduces a delayed feedback mechanism into a Leslie–Gower prey harvesting model, resulting in a more realistic dynamic system.
Deng Qinwen, Xu Changjin, Lin Jinting, Zhao Yingyan   +3 more
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
doaj   +1 more source

Bifurcation of limit cycles in a class of piecewise smooth generalized Abel equations with two asymmetric zones

Advanced Nonlinear Studies
This paper studies the number of limit cycles, known as the Smale-Pugh problem, for the generalized Abel equationdxdθ=A(θ)xp+B(θ)xq, $$\frac{\mathrm{d}x}{\mathrm{d}\theta }=A\left(\theta \right){x}^{p}+B\left(\theta \right){x}^{q},$$ where A and B are ...
Liang Haihua, Huang Jianfeng
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
doaj   +1 more source

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
doaj   +1 more source

Modelling the role of macrophage polarization during pulmonary infection of Mycobacterium tuberculosis with cellular immunity

Journal of Biological Dynamics
This paper proposes a within-host Mycobacterium tuberculosis (Mtb) infection model integrating M1/M2 macrophage conversion to explore macrophage polarization regulation in pulmonary infection with cellular immunity. The basic reproduction number [Formula:
Ruidi Ding, Cunjuan Dong, Long Zhang, Zhidong Teng   +3 more
doaj   +1 more source

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