Results 51 to 60 of about 6,100 (243)

Some results on homoclinic and heteroclinic connections in planar systems [PDF]

open access: yes, 2009
Consider a family of planar systems depending on two parameters $(n,b)$ and having at most one limit cycle. Assume that the limit cycle disappears at some homoclinic (or heteroclinic) connection when $\Phi(n,b)=0.$ We present a method that allows to ...
Andronov A A   +12 more
core   +4 more sources

Bifurcation analysis of a two-dimensional discrete Hindmarsh–Rose type model

open access: yesAdvances in Difference Equations, 2019
In this paper, bifurcation analysis of a discrete Hindmarsh–Rose model is carried out in the plane. This paper shows that the model undergoes a flip bifurcation, a Neimark–Sacker bifurcation, and 1:2 $1:2$ resonance which includes a pitchfork bifurcation,
Bo Li, Qizhi He
doaj   +1 more source

Hopf-zero bifurcation of Oregonator oscillator with delay

open access: yesAdvances in Difference Equations, 2018
In this paper, we study the Hopf-zero bifurcation of Oregonator oscillator with delay. The interaction coefficient and time delay are taken as two bifurcation parameters. Firstly, we get the normal form by performing a center manifold reduction and using
Yuting Cai, Liqin Liu, Chunrui Zhang
doaj   +1 more source

Spiralling dynamics near heteroclinic networks [PDF]

open access: yes, 2013
There are few explicit examples in the literature of vector fields exhibiting complex dynamics that may be proved analytically. We construct explicitly a {two parameter family of vector fields} on the three-dimensional sphere $\EU^3$, whose flow has a ...
Address Of Alex   +7 more
core   +1 more source

Dynamics of a plant-herbivore model with a chemically-mediated numerical response

open access: yesMathematics in Applied Sciences and Engineering, 2021
A system of two ordinary differential equations is proposed to model chemically-mediated interactions between plants and herbivores by incorporating a toxin-modified numerical response.
Lin Wang, James Watmough, Fang Yu
doaj   +1 more source

Jump and Initial-Sensitive Excessive Motion of a Class of Relative Rotation Systems and Their Control via Delayed Feedback

open access: yesMathematics, 2022
Jump and excessive motion are undesirable phenomena in relative rotation systems, causing a loss of global integrity and reliability of the systems. In this work, a typical relative rotation system is considered in which jump, excessive motion, and their
Ziyin Cui, Huilin Shang
doaj   +1 more source

Dependence of chaotic behavior on optical properties and electrostatic effects in double beam torsional Casimir actuation [PDF]

open access: yes, 2018
We investigate the influence of Casimir and electrostatic torques on double beam torsional microelectromechanical systems with materials covering a broad range of conductivities of more than three orders of magnitude.
Masoudi, A. A.   +4 more
core   +2 more sources

Nearly inviscid Faraday waves in containers with broken symmetry [PDF]

open access: yes, 2005
In the weakly inviscid regime parametrically driven surface gravity-capillary waves generate oscillatory viscous boundary layers along the container walls and the free surface.
Higuera, María   +2 more
core   +2 more sources

Bifurcation and chaos for piecewise nonlinear roll system of rolling mill

open access: yesAdvances in Mechanical Engineering, 2017
A non-smooth cold roll system of rolling mill is studied to reveal the bifurcation of the piecewise-smooth and discontinuous system. To examine the influence of the parameters on the dynamics, the bifurcation diagram is constructed when it is unperturbed.
Chundi Si   +3 more
doaj   +1 more source

Fear Effect on a Predator–Prey Model with Non-Differential Fractional Functional Response

open access: yesFractal and Fractional, 2023
In this paper, we study the factor of the fear effect in a predator–prey model with prey refuge and a non-differentiable fractional functional response due to the group defense.
Salam Mohammed Ghazi Al-Mohanna   +1 more
doaj   +1 more source

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