Results 41 to 50 of about 170,965 (333)

Generalized Pitchfork Bifurcations in D-Concave Nonautonomous Scalar Ordinary Differential Equations [PDF]

open access: yesJournal of Dynamics and Differential Equations, 2022
The global bifurcation diagrams for two different one-parametric perturbations ($$+\lambda x$$ + λ x and $$+\lambda x^2$$ + λ x 2 ) of a dissipative scalar nonautonomous ordinary differential equation $$x'=f(t,x)$$ x ′ = f
J. Duenas, C. N'unez, R. Obaya
semanticscholar   +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

Multi-stabilities and symmetry-broken one-colour and two-colour states in closely coupled single-mode lasers [PDF]

open access: yes, 2014
We theoretically investigate the dynamics of two mutually coupled identical single-mode semi-conductor lasers. For small separation and large coupling between the lasers, symmetry-broken one-colour states are shown to be stable.
Amann, Andreas   +2 more
core   +2 more sources

Supercritical Pitchfork Bifurcation of a Fractional‐Order Doubly‐Fed Induction Generator [PDF]

open access: goldEnergy Science &Engineering, EarlyView.
ABSTRACT To address the problem of the chaos phenomenon caused by the parameter drift of a doubly‐fed induction generator (DFIG) due to a changing operating environment, a fractional‐order stator voltage/flux‐oriented control model is developed, and bifurcation theory and numerical simulations reveal that the chaos mechanism originates from ...
Wei Chen   +4 more
openalex   +2 more sources

Persistence and bifurcation analysis among four species interactions with the influence of competition, predation and harvesting

open access: yesIraqi Journal of Science, 2023
      In this paper, the interplay among four population species is offered. The system consists of two competitive prey, predator and super predators.
S. Jawad, Marwa Al Nuaimi
semanticscholar   +1 more source

On local and global aspects of the 1:4 resonance in the conservative cubic H\'enon maps [PDF]

open access: yes, 2017
We study the 1:4 resonance for the conservative cubic H\'enon maps $\mathbf{C}_\pm$ with positive and negative cubic term. These maps show up different bifurcation structures both for fixed points with eigenvalues $\pm i$ and for 4-periodic orbits. While
Gonchenko, M.   +3 more
core   +2 more sources

Pattern Transition on Inertial Focusing of Neutrally Buoyant Particles Suspended in Rectangular Duct Flows

open access: yesMicromachines, 2021
The continuous separation and filtration of particles immersed in fluid flows are important interests in various applications. Although the inertial focusing of particles suspended in a duct flow is promising in microfluidics, predicting the focusing ...
Hiroshi Yamashita   +2 more
doaj   +1 more source

Chua’s oscillator: an introductory approach to chaos theory [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2020
The purpose of this article is to build an introductory approach to chaos theory from the Chua’ oscillator for students of mathematics, physics and engineering.
Alexandre Sordi
doaj   +1 more source

Using the Logistic Map as Compared to the Cubic Map to Show the Convergence and the Relaxation of the Period–1 Fixed Point

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2022
In this paper, we employ the logistic map and the cubic map to locate the relaxation and the convergence to the periodic fixed point of a system, specifically, the period—1 fixed point.
Patrick Akwasi Anamuah Mensah   +4 more
doaj   +1 more source

Dynamics Analysis of a Discrete-Time Commensalism Model with Additive Allee for the Host Species

open access: yesAxioms, 2023
We propose and study a class of discrete-time commensalism systems with additive Allee effects on the host species. First, the single species with additive Allee effects is analyzed for existence and stability, then the existence of fixed points of ...
Yanbo Chong   +3 more
doaj   +1 more source

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