Results 51 to 60 of about 26,001 (267)

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

Complex dynamics and Bogdanov-Takens bifurcations in a retarded van der Pol-Duffing oscillator with positional delayed feedback

open access: yesMathematical Biosciences and Engineering, 2023
In this article, we will investigate a retarded van der Pol-Duffing oscillator with multiple delays. At first, we will find conditions for which Bogdanov-Takens (B-T) bifurcation occurs around the trivial equilibrium of the proposed system.
Mohammad Sajid   +3 more
doaj   +1 more source

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

Global Structural Stability of a Saddle Node Bifurcation [PDF]

open access: yesTransactions of the American Mathematical Society, 1978
S. Newhouse, J. Palis, and F. Takens have recently proved the global structural stability of a one parameter unfolding of a saddle node when the nonwandering set is finite and transversality conditions are satisfied. (The diffeomorphism is Morse-Smale except for the saddle node.) Using their local unfolding of a saddle node and our method of compatible
openaire   +2 more sources

Bifurcation, chaos, and voltage collapse in power systems [PDF]

open access: yes, 1995
A model of a power system with load dynamics is studied by investigating qualitative changes in its behavior as the reactive power demand at a load bus is increased.
Tan, ChinWoo   +3 more
core   +1 more source

Bifurcation of an Orbit Homoclinic to a Hyperbolic Saddle of a Vector Field in R4

open access: yesDiscrete Dynamics in Nature and Society, 2015
We perform a bifurcation analysis of an orbit homoclinic to a hyperbolic saddle of a vector field in R4. We give an expression of the gap between returning points in a transverse section by renormalizing system, through which we find the existence of ...
Tiansi Zhang, Dianli Zhao
doaj   +1 more source

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

Kuramoto Phase Model with Inertia: Bifurcations Leading to the Loss of Synchrony and to the Emergence of Chaos

open access: yesМоделирование и анализ информационных систем, 2015
We consider a finite-dimensional model of phase oscillators with inertia in the case of star configuration of coupling. The system of equations is reduced to a nonlinearly coupled system of pendulum equations.
V. N. Belykh   +2 more
doaj   +1 more source

On the CCN (de)activation nonlinearities [PDF]

open access: yesNonlinear Processes in Geophysics, 2017
We take into consideration the evolution of particle size in a monodisperse aerosol population during activation and deactivation of cloud condensation nuclei (CCN). Our analysis reveals that the system undergoes a saddle-node bifurcation and a cusp
S. Arabas, S. Arabas, S.-I. Shima
doaj   +1 more source

Computational Analysis and Bifurcation of Regular and Chaotic Ca2+ Oscillations

open access: yesMathematics, 2021
This study investigated the stability and bifurcation of a nonlinear system model developed by Marhl et al. based on the total Ca2+ concentration among three different Ca2+ stores.
Xinxin Qie, Quanbao Ji
doaj   +1 more source

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