Results 11 to 20 of about 10,534 (236)

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

Dynamics of a plant-herbivore model with a chemically-mediated numerical response

open access: yesMathematics in Applied Sciences and Engineering, 2021
A system of two ordinary differential equations is proposed to model chemically-mediated interactions between plants and herbivores by incorporating a toxin-modified numerical response.
Lin Wang, James Watmough, Fang Yu
doaj   +1 more source

Homoclinic orbits to invariant tori near a homoclinic orbit to center–center–saddle equilibrium [PDF]

open access: yesPhysica D: Nonlinear Phenomena, 2005
We consider a perturbation of an integrable Hamiltonian vector field with three degrees of freedom with a center–center–saddle equilibrium having a homoclinic orbit or loop. With the help of a Poincaré map (chosen based on the unperturbed homoclinic loop), we study the homoclinic intersections between the stable and unstable manifolds associated to ...
Koltsova, Oksana   +3 more
openaire   +2 more sources

Heteroclinic Connections between Periodic Orbits in Planar Restricted Circular Three Body Problem - Part II [PDF]

open access: yes, 2004
We present a method for proving the existence of symmetric periodic, heteroclinic or homoclinic orbits in dynamical systems with the reversing symmetry.
Wilczak, D., Zgliczynski, P.
core   +1 more source

Homoclinic orbits for Schrödinger systems

open access: yesMichigan Mathematical Journal, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schechter, Martin, Zou, Wenming
openaire   +3 more sources

Homoclinic Bifurcations in Planar Piecewise-Linear Systems

open access: yesDiscrete Dynamics in Nature and Society, 2013
The problem of homoclinic bifurcations in planar continuous piecewise-linear systems with two zones is studied. This is accomplished by investigating the existence of homoclinic orbits in the systems.
Bin Xu, Fenghong Yang, Yun Tang, Mu Lin
doaj   +1 more source

Homoclinic crossing in open systems: Chaos in periodically perturbed monopole plus quadrupolelike potentials [PDF]

open access: yes, 2002
The Melnikov method is applied to periodically perturbed open systems modeled by an inverse--square--law attraction center plus a quadrupolelike term. A compactification approach that regularizes periodic orbits at infinity is introduced.
A. E. Motter   +30 more
core   +2 more sources

Continuation of Homoclinic Orbits in Matlab [PDF]

open access: yes, 2005
We have added the functionality for continuing homoclinic orbits to cl_matcont, a user-friendly matlab package for the study of dynamical systems and their bifurcations. It is now possible to continue homoclinic-to-hyperbolic-saddle and homoclinic-to-saddle-node orbits.
Friedman, M.   +3 more
openaire   +2 more sources

Bifurcation and chaos for piecewise nonlinear roll system of rolling mill

open access: yesAdvances in Mechanical Engineering, 2017
A non-smooth cold roll system of rolling mill is studied to reveal the bifurcation of the piecewise-smooth and discontinuous system. To examine the influence of the parameters on the dynamics, the bifurcation diagram is constructed when it is unperturbed.
Chundi Si   +3 more
doaj   +1 more source

Complex dynamics of a sub-quadratic Lorenz-like system

open access: yesOpen Physics, 2023
Motivated by the generic dynamical property of most quadratic Lorenz-type systems that the unstable manifolds of the origin tending to the stable manifold of nontrivial symmetrical equilibria forms a pair of heteroclinic orbits, this technical note ...
Li Zhenpeng   +5 more
doaj   +1 more source

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