Results 21 to 30 of about 2,221 (187)

Effect of immigration in a predator-prey system: Stability, bifurcation and chaos

open access: yesAIMS Mathematics, 2022
In the present manuscript, a discrete-time predator-prey system with prey immigration is considered. The existence of the possible fixed points of the system and topological classification of coexistence fixed point are analyzed.
Figen Kangalgil, Seval Isșık
doaj   +1 more source

Small aspect ratio Taylor-Couette flow: onset of a very-low-frequency three-torus state [PDF]

open access: yes, 2003
The nonlinear dynamics of Taylor-Couette flow in a small aspect ratio annulus (where the length of the cylinders is half of the annular gap between them) is investigated by numerically solving the full three-dimensional Navier-Stokes equations.
López Moscat, Juan Manuel   +1 more
core   +2 more sources

Numerical detection of synchronization phenomena in quasi‐periodic solutions

open access: yesPAMM, Volume 23, Issue 3, November 2023., 2023
Abstract In science and technology, dynamical systems can show so‐called quasi‐periodic solutions. These solutions are composed of two or more base frequencies. The solution in the time domain can be represented by an invariant manifold. To parametrize the invariant manifold, we choose the hyper‐time parametrization.
Alexander Seifert   +2 more
wiley   +1 more source

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

Discrete Leslie's model with bifurcations and control

open access: yesAIMS Mathematics, 2023
We explored a local stability analysis at fixed points, bifurcations, and a control in a discrete Leslie's prey-predator model in the interior of $ \mathbb{R}_+^2 $.
A. Q. Khan, Ibraheem M. Alsulami
doaj   +1 more source

Neimark–Sacker bifurcation of a chemotherapy treatment of glioblastoma multiform (GBM) [PDF]

open access: yesAdvances in Difference Equations, 2019
Abstract In this paper, we propose a system of differential equations with piecewise constant arguments to describe the growth of GBM under chemotherapeutic treatment and the interaction among the glial cells, the cancer cells, and the chemotherapeutic agents. In this work, the cancer cells are considered as two populations: the sensitive
Bozkurt Yousef, Fatma, Yousef, Ali
openaire   +4 more sources

Bifurcation analysis in a discrete predator–prey model with herd behaviour and group defense

open access: yesElectronic Research Archive, 2023
In this paper, we utilize the semi-discretization method to construct a discrete model from a continuous predator-prey model with herd behaviour and group defense.
Jie Xia, Xianyi Li
doaj   +1 more source

Computation of periodic solution bifurcations in ODEs using bordered systems [PDF]

open access: yes, 2002
We consider numerical methods for the computation and continuation of the three generic secondary periodic solution bifurcations in autonomous ODEs, namely the fold, the period-doubling (or flip) bifurcation, and the torus (or Neimark–Sacker) bifurcation.
Doedel, E. J.   +2 more
core   +2 more sources

Global dynamics, Neimark-Sacker bifurcation and hybrid control in a Leslie’s prey-predator model

open access: yesAlexandria Engineering Journal, 2022
In the present study, we explore the topological classifications at fixed points, global dynamics, Neimark-Sacker bifurcation and hybrid control in the two-dimensional discrete-time Leslie’s prey-predator model.
A.Q. Khan   +2 more
doaj   +1 more source

Synchronous motion of two vertically excited planar elastic pendula [PDF]

open access: yes, 2012
The dynamics of two planar elastic pendula mounted on the horizontally excited platform have been studied. We give evidence that the pendula can exhibit synchronous oscillatory and rotation motion and show that stable in-phase and anti-phase synchronous ...
Anicin   +40 more
core   +2 more sources

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