Results 31 to 40 of about 3,877 (218)

Heteroclinic bifurcation for a general predator-prey model with Allee effect and state feedback impulsive control strategy

open access: yesMathematical Biosciences and Engineering, 2015
In this paper, we analyze a general predator-prey modelwith state feedback impulsive harvesting strategies in which the prey species displays a strongAllee effect.
Qizhen Xiao, Binxiang Dai
doaj   +1 more source

Nonlinear stochastic dynamics research on a Lorenz system with white Gaussian noise based on a quasi‐potential approach

open access: yesInternational Journal of Mechanical System Dynamics, 2023
Environmental noise can lead to complex stochastic dynamical behaviors in nonlinear systems. In this paper, a Lorenz system with the parameter region with two stable fixed points and a chaotic saddle subject to white Gaussian noise is investigated as an ...
Yong Huang
doaj   +1 more source

New approach to study the van der Pol equation for large damping

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
We present a new approach to establish the existence of a unique limit cycle for the van der Pol equation in case of large damping. It is connected with the bifurcation of a stable hyperbolic limit cycle from a closed curve composed of two heteroclinic ...
Klaus Schneider
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

Singular Orbits and Dynamics at Infinity of a Conjugate Lorenz-Like System

open access: yesMathematical Modelling and Analysis, 2015
A conjugate Lorenz-like system which includes only two quadratic nonlinearities is proposed in this paper. Some basic properties of this system, such as the distribution of its equilibria and their stabilities, the Lyapunov exponents, the bifurcations ...
Fengjie Geng, Xianyi Li
doaj   +1 more source

Slow Switching in Globally Coupled Oscillators: Robustness and Occurrence through Delayed Coupling [PDF]

open access: yes, 2001
The phenomenon of slow switching in populations of globally coupled oscillators is discussed. This characteristic collective dynamics, which was first discovered in a particular class of the phase oscillator model, is a result of the formation of a ...
A.T. Winfree   +18 more
core   +3 more sources

Shapley Polygons in 4 x 4 Games

open access: yesGames, 2010
We study 4 x 4 games for which the best response dynamics contain a cycle. We give examples in which multiple Shapley polygons occur for these kinds of games.
Martin Hahn
doaj   +1 more source

The Hunt Opinion Model-An Agent Based Approach to Recurring Fashion Cycles. [PDF]

open access: yesPLoS ONE, 2016
We study a simple agent-based model of the recurring fashion cycles in the society that consists of two interacting communities: "snobs" and "followers" (or "opinion hunters", hence the name of the model).
Rafał Apriasz   +3 more
doaj   +1 more source

Cycling chaos: its creation, persistence and loss of stability in a model of nonlinear magnetoconvection [PDF]

open access: yes, 1998
We examine a model system where attractors may consist of a heteroclinic cycle between chaotic sets; this ‘cycling chaos’ manifests itself as trajectories that spend increasingly long periods lingering near chaotic invariant sets interspersed with short ...
A.M. Rucklidge   +23 more
core   +3 more sources

Heteroclinic cycles between unstable attractors [PDF]

open access: yesNonlinearity, 2008
We consider networks of pulse coupled linear oscillators with non-zero delay where the coupling between the oscillators is given by the Mirollo-Strogatz function. We prove the existence of heteroclinic cycles between unstable attractors for a network of four oscillators and for an open set of parameter values.
Broer, Henk   +2 more
openaire   +2 more sources

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