Results 41 to 50 of about 33,473 (203)

Hopf bifurcations to quasi-periodic solutions for the two-dimensional plane Poiseuille flow

open access: yes, 2011
This paper studies various Hopf bifurcations in the two-dimensional plane Poiseuille problem. For several values of the wavenumber $\alpha$, we obtain the branch of periodic flows which are born at the Hopf bifurcation of the laminar flow.
Alavyoon   +20 more
core   +1 more source

Pseudo, or Not? Neo‐Goodwinian Growth Cycles With Financial Linkages

open access: yesMetroeconomica, EarlyView.
ABSTRACT A profit‐led Goodwin mechanism generates the observed counterclockwise activity–labor share cycle. Introducing a financial linkage can reproduce this pattern even when demand is not profit‐led. This paper extends neo‐Goodwinian theory by incorporating the valuation ratio into a four‐dimensional model.
Rudiger von Arnim, Luis Felipe Eick
wiley   +1 more source

Dynamics of an SIR epidemic model incorporating time delay and convex incidence rate

open access: yesResults in Physics, 2022
In this paper, dynamical behaviors including stability and Hopf bifurcation of a delayed SIR epidemic model with convex incidence rate are examined. We first discuss the existence of Hopf bifurcation.
Haojie Yang   +4 more
doaj   +1 more source

Stabilizing unstable periodic orbits in the Lorenz equations using time-delayed feedback control

open access: yes, 2007
For many years it was believed that an unstable periodic orbit with an odd number of real Floquet multipliers greater than unity cannot be stabilized by the time-delayed feedback control mechanism of Pyragus.
C. Sparrow   +6 more
core   +1 more source

Unraveling the Mystery of Melt Migration in Migmatites: From Channeling Instability to Pattern Formation

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Melt migration in partially molten rocks is commonly described by porous flow models controlled by the hydro‐mechanical compaction length, which effectively explains melt extraction at mid‐ocean ridges. However, this framework cannot account for the paradoxical accumulation of small melt fractions into rhythmic leucosome–melanosome bands in ...
Qingpei Sun   +3 more
wiley   +1 more source

Global existence of periodic solutions in a simplified four-neuron BAM neural network model with multiple delays

open access: yesDiscrete Dynamics in Nature and Society, 2006
We consider a simplified bidirectional associated memory (BAM) neural network model with four neurons and multiple time delays. The global existence of periodic solutions bifurcating from Hopf bifurcations is investigated by applying the global Hopf ...
Xiang-Ping Yan, Wan-Tong Li
doaj   +2 more sources

Bifurcation Analysis of Three-Strategy Imitative Dynamics with Mutations

open access: yesComplexity, 2019
Evolutionary game dynamics is an important research, which is widely used in many fields such as social networks, biological systems, and cooperative behaviors.
Wenjun Hu, Haiyan Tian, Gang Zhang
doaj   +1 more source

Hopf Bifurcations in a Watt Governor With a Spring

open access: yes, 2008
This paper pursues the study carried out by the authors in "Stability and Hopf bifurcation in a hexagonal governor system", focusing on the codimension one Hopf bifurcations in the hexagonal Watt governor differential system.
Al-Humadi A   +13 more
core   +1 more source

Stochastic Forces in Microbial Community Assembly: Founding Community Size Governs Divergent Ecological Trajectories

open access: yesEcology Letters, Volume 29, Issue 5, May 2026.
The processes driving community assembly are broadly categorised into deterministic and stochastic ones. With a multi‐replicated experimental design, we quantified the extent to which stochasticity at initial stages of community assembly could drive divergence into alternative ecological trajectories.
Ibuki Hayashi   +2 more
wiley   +1 more source

Global Hopf Bifurcation Analysis for an Avian Influenza Virus Propagation Model with Nonlinear Incidence Rate and Delay

open access: yesAbstract and Applied Analysis, 2014
The paper investigated an avian influenza virus propagation model with nonlinear incidence rate and delay based on SIR epidemic model. We regard delay as bifurcating parameter to study the dynamical behaviors.
Yanhui Zhai   +3 more
doaj   +1 more source

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