Results 11 to 20 of about 38,020 (248)

Are physiological oscillations physiological?

open access: yesThe Journal of Physiology, EarlyView., 2023
Abstract figure legend Mechanisms and functions of physiological oscillations. Abstract Despite widespread and striking examples of physiological oscillations, their functional role is often unclear. Even glycolysis, the paradigm example of oscillatory biochemistry, has seen questions about its oscillatory function.
Lingyun (Ivy) Xiong, Alan Garfinkel
wiley   +1 more source

Hopf Bifurcation, Hopf-Hopf Bifurcation, and Period-Doubling Bifurcation in a Four-Species Food Web [PDF]

open access: yesMathematical Problems in Engineering, 2018
Complex dynamics of a four-species food web with two preys, one middle predator, and one top predator are investigated. Via the method of Jacobian matrix, the stability of coexisting equilibrium for all populations is determined. Based on this equilibrium, three bifurcations, i.e., Hopf bifurcation, Hopf-Hopf bifurcation, and period-doubling ...
Huayong Zhang   +5 more
openaire   +2 more sources

Zero-Hopf bifurcation and Hopf bifurcation for smooth Chua’s system [PDF]

open access: yesAdvances in Difference Equations, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Junze Li, Yebei Liu, Zhouchao Wei
openaire   +3 more sources

Hopf bifurcation in delayed nutrient-microorganism model with network structure

open access: yesJournal of Biological Dynamics, 2022
In this paper, we introduce and deal with the delayed nutrient-microorganism model with a random network structure. By employing time delay τ as the main critical value of the Hopf bifurcation, we investigate the direction of the Hopf bifurcation of such
Mengxin Chen   +3 more
doaj   +1 more source

Bifurcation phenomena in a single-species reaction-diffusion model with spatiotemporal delay

open access: yesAIMS Mathematics, 2021
In this paper we investigate bifurcation phenomena in a single-species reaction-diffusion model with spatiotemporal delay under the conditions of the weak and strong kernel functions.
Gaoxiang Yang, Xiaoyu Li
doaj   +1 more source

Comparative exploration on bifurcation behavior for integer-order and fractional-order delayed BAM neural networks

open access: yesNonlinear Analysis, 2022
In the present study, we deal with the stability and the onset of Hopf bifurcation of two type delayed BAM neural networks (integer-order case and fractional-order case).
Changjin Xu   +7 more
doaj   +1 more source

Degenerate Fold-Hopf Bifurcations in a Rössler-Type System [PDF]

open access: yes, 2017
We study the Hopf and the fold--Hopf bifurcations of the R\"ossler--type differential system * =-y-z, =x ay, =-cz byz, * with b 0. We show that the classical Hopf bifurcation cannot be applied to this system for detecting the fold--Hopf bifurcation ...
Ciurdariu, Loredana   +2 more
core   +2 more sources

Bifurcation Analysis of the Watt Governor System [PDF]

open access: yes, 2006
This paper pursues the study carried out by the authors in {\it Stability and Hopf bifurcation in the Watt governor system} \cite{smb}, focusing on the codimension one Hopf bifurcations in the centrifugal Watt governor differential system, as presented ...
Braga, Denis de Carvalho   +2 more
core   +4 more sources

Hopf Bifurcation Control in a Delayed Predator-Prey System with Prey Infection and Modified Leslie-Gower Scheme

open access: yesAbstract and Applied Analysis, 2013
Hopf bifurcation of a delayed predator-prey system with prey infection and the modified Leslie-Gower scheme is investigated. The conditions for the stability and existence of Hopf bifurcation of the system are obtained.
Zizhen Zhang, Huizhong Yang
doaj   +1 more source

Controlling hopf bifurcations: Discrete-time systems

open access: yesDiscrete Dynamics in Nature and Society, 2000
Bifurcation control has attracted increasing attention in recent years. A simple and unified state-feedback methodology is developed in this paper for Hopf bifurcation control for discrete-time systems. The control task can be either shifting an existing
Guanrong Chen   +3 more
doaj   +1 more source

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