Results 21 to 30 of about 205,806 (279)

Simple and complex dynamics in the model of evolution of two populations coupled by migration with non-overlapping generations [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2022
Purpose is to study the mechanisms leading to genetic divergence (stable genetic differences between two adjacent populations). We considered the following classical model situation. Populations are panmictic with Mendelian rules of inheritance.
Kulakov, Matvej Pavlovich   +1 more
doaj   +1 more source

Bifurcations in a discrete predator–prey model with nonmonotonic functional response

open access: yesJournal of Mathematical Analysis and Applications, 2018
The predator–prey/consumer–resource interaction is the most fundamental and important process in population dynamics. Many species, such as monocarpic plants and semelparous animals, have discrete nonoverlapping generations and their births occur in ...
Jicai Huang   +3 more
semanticscholar   +1 more source

Single-Mode and Dual-Mode Nongomogeneous Dissipative Structures in the Nonlocal Model of Erosion

open access: yesМоделирование и анализ информационных систем, 2015
We consider a periodic boundary-value problem for a nonlinear equation with the deviating spatial argument in the case when the deviation is small. This equation is called a spatially nonlocal erosion equation.
A. M. Kovaleva, D. A. Kulikov
doaj   +1 more source

Post-transition state bifurcations gain momentum – current state of the field

open access: yes, 2017
The existence of post-transition state bifurcations on potential energy surfaces for organic and biological reaction mechanisms has been known for decades, but recently, new reports of bifurcations have been occurring at a much higher rate. Beyond simply
Stephanie R Hare, D. Tantillo
semanticscholar   +1 more source

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

Bifurcations of stationary manifolds formed in the neighborhood of equilibrium in the dynamic cutting system

open access: yesAdvanced Engineering Research, 2015
The work objective is to study the formation of orbitally asymptotically stable limit cycles and two-dimensional invariant tori including bifurcations near the attracting sets. The investigators use primarily methods based on the mathematic simulation of
Vilor Lavrentyevich Zakovorotny   +2 more
doaj   +1 more source

Bifurcation transitions in dynamic systems of pulse voltage regulator

open access: yesФизика волновых процессов и радиотехнические системы, 2020
In this article bifurcations in nonlinear dynamical systems are considered and special attention is paid to bifurcations-crises, which are identified with catastrophes in systems.
Andrei A. Voronoi   +2 more
doaj   +1 more source

A case of forming chaotic attractors in cutting dynamic system

open access: yesAdvanced Engineering Research, 2015
The conditions under which the chaotic dynamics is formed during the materials processing by cutting are analyzed. In the previous studies, in case of loss of sta-bility of the cutting process, limit cycles or invariant tori are generated in the ...
Vilor Lavrentyevich Zakovorotny   +2 more
doaj   +1 more source

On the interaction of a system with multifrequency oscillations with a chaotic generator [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of the work: to study the influence of the dynamics of a chaotic system on a system with multi-frequency quasi-periodicity and the Landau-Hopf scenario.
Kuznetsov, Aleksandr Petrovich   +1 more
doaj   +1 more source

Bifurcations and Slow-Fast Analysis in a Cardiac Cell Model for Investigation of Early Afterdepolarizations

open access: yesMathematics, 2020
In this study, we teased out the dynamical mechanisms underlying the generation of arrhythmogenic early afterdepolarizations (EADs) in a three-variable model of a mammalian ventricular cell.
Roberto Barrio   +3 more
doaj   +1 more source

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