Results 21 to 30 of about 17,826 (235)

Bifurcations of a Ratio-Dependent Holling-Tanner System with Refuge and Constant Harvesting

open access: yesAbstract and Applied Analysis, 2013
The bifurcation properties of a predator prey system with refuge and constant harvesting are investigated. The number of the equilibria and the properties of the system will change due to refuge and harvesting, which leads to the occurrence of several ...
Xia Liu, Yepeng Xing
doaj   +1 more source

Dynamical Mechanism of Hyperpolarization-Activated Non-specific Cation Current Induced Resonance and Spike-Timing Precision in a Neuronal Model

open access: yesFrontiers in Cellular Neuroscience, 2018
Hyperpolarization-activated cyclic nucleotide-gated cation current (Ih) plays important roles in the achievement of many physiological/pathological functions in the nervous system by modulating the electrophysiological activities, such as the rebound ...
Zhiguo Zhao   +3 more
doaj   +1 more source

Spatial Effects of Phase Dynamics on Oscillators Close to Bifurcation

open access: yesMathematics, 2023
The phase reduction approach has manifested its efficacy in investigating synchronization behaviors in limit-cycle oscillators. However, spatial distributions of the phase value on the limit cycle may lead to illusions of synchronizations for oscillators
Yihan Wang, Jinjie Zhu
doaj   +1 more source

Complex dynamics of a predator–prey model with opportunistic predator and weak Allee effect in prey

open access: yesJournal of Biological Dynamics, 2023
In this work, we first modify a Lotka–Volterra predator–prey system to incorporate an opportunistic predator and weak Allee effect in prey. The prey will be extinct if the combined effect of hunting and other food resources of predator is large ...
Zhenliang Zhu   +3 more
doaj   +1 more source

Two-state intermittency near a symmetric interaction of saddle-node and Hopf bifurcations: a case study from dynamo theory [PDF]

open access: yes, 2003
We consider a model of a Hopf bifurcation interacting as a codimension 2 bifurcation with a saddle-node on a limit cycle, motivated by a low-order model for magnetic activity in a stellar dynamo.
Alastair M. Rucklidge   +24 more
core   +4 more sources

Dynamics of a Discrete Leslie–Gower Model with Harvesting and Holling-II Functional Response

open access: yesMathematics, 2023
Recently, Christian Cortés García proposed and studied a continuous modified Leslie–Gower model with harvesting and alternative food for predator and Holling-II functional response, and proved that the model undergoes transcritical bifurcation, saddle ...
Chen Zhang, Xianyi Li
doaj   +1 more source

Accumulating regions of winding periodic orbits in optically driven lasers [PDF]

open access: yes, 2001
We investigate the route to locking in class B lasers subject to optically injected light for injection strengths and detunings near a codimension-two saddle-node Hopf point.
Krauskopf, B, Wieczorek, Sebastian
core   +2 more sources

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

Generalized scaling theory for critical phenomena including essential singularity and infinite dimensionality [PDF]

open access: yes, 2012
We propose a generic scaling theory for critical phenomena that includes power-law and essential singularities in finite and infinite dimensional systems. In addition, we clarify its validity by analyzing the Potts model in a simple hierarchical network,
Koji Nemoto   +4 more
core   +2 more sources

Dynamics of a Filippov epidemic model with limited hospital beds

open access: yesMathematical Biosciences and Engineering, 2018
A Filippov epidemic model is proposed to explore the impact of capacity and limited resources of public health system on the control of epidemic diseases.
Aili Wang, Yanni Xiao, Huaiping Zhu
doaj   +1 more source

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